JP2022150899A - Continuous burning system - Google Patents

Abstract

To improve quality of a burning object.SOLUTION: A continuous burning system 1 includes a continuous burning furnace 10, and a circulation line 20 for circulating a burning container A with respect to the continuous burning furnace 10. The circulation line 20 includes a hood 21 which separates a circulation space 22 extending from a carry-out port 12 to a carry-in port 11 of the continuous burning furnace 10 from an external space in the outside of the continuous burning furnace 10, and at least one work booth. The work booth includes a cover 53 which shuts off a working space 503 from the external space, and a shutter 55. The working space 503 surrounded by the cover 53 is continuous with a space surrounded by the hood 21 of the circulation space 22. The working space 503 surrounded by the cover 53 and the space surrounded by the hood 21 of the circulation space 22 are partitioned by the shutter 55.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to continuous firing systems.

Japanese Patent Application Laid-Open No. 2019-184211 discloses an invention relating to a baking apparatus. The calcining apparatus disclosed herein comprises a feed section, a calcining furnace, a conveying section, and a discharge section. The supply unit is a part that supplies the object to be fired to the setter on which the object to be fired is placed. The firing furnace is a furnace for firing the object to be fired supplied to the setter. The conveying unit is a part that carries the setter supplied with the object to be fired from the supply unit into the firing furnace, and carries out the setter in which the object to be fired is fired from the firing furnace. The discharge part is a part that removes the high-temperature fired product carried out from the firing furnace from the setter. In this publication, the transport section moves the setter in the order of the supply section, the firing furnace, and the discharge section. The supply unit includes a heating mechanism that heats the object to be baked, and supplies the heated object to be baked to the setter. According to such a sintering apparatus, preheated objects to be sintered are supplied to a high-temperature setter and supplied to the sintering furnace, so the time required for raising the temperature of the objects to be sintered and the setter can be shortened. Moreover, since the fired product is removed from the setter while the temperature is still high, it is possible to shorten the time required to remove the fired product from the setter after firing. Therefore, it is said that the production efficiency of the fired product can be increased.

JP 2019-184211 A

By the way, the inventor wants to improve the quality of the baked product.

One aspect of the continuous firing system disclosed herein includes a continuous firing furnace and a circulation line for circulating firing vessels with respect to the continuous firing furnace. A continuous firing furnace has a tunnel-shaped furnace body forming a transport space in which a firing container is transported from an inlet to an outlet. The circulation line includes a take-out unit that takes out the fired material from the firing container, a supply unit that supplies the unfired material to be fired to the firing container, and a circulation line from the outlet of the continuous firing furnace to the inlet outside the continuous firing furnace. A hood separates the space from the exterior space.

According to such a continuous firing system, it is possible to take out the fired material from the firing container and supply the fired material to the firing container in the circulation space separated from the external space. Therefore, it is possible to carry out the firing process while maintaining high quality of the fired material fired in the continuous firing furnace and the fired material introduced into the continuous firing furnace.

The supply unit may be provided closer to the inlet of the continuous firing furnace than the take-out unit in the circulation line. The conveying route of the continuous firing furnace may be set along a straight line. The circulation line may have a linear transport section, a first connection section, and a second connection section. The linear transfer portion is a transfer portion along a straight line parallel to the transfer path of the continuous firing furnace. The first connection part is a part that continues to the outlet side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport part. The second connection part is a part that continues to the carry-in port side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport part. In this case, the take-out unit may be arranged in the linear transport section. Also, the supply unit may be arranged in the linear transport section.

The take-out unit includes an inversion mechanism that inverts the firing container up and down, a collection part that collects the contents of the firing container below the position where the firing container is inverted, and a space where the firing container is inverted and the outside. and at least one ejection device with a first cover. The space surrounded by the first cover may be continuous with the space surrounded by the hood of the circulation line.

The continuous firing system may have a shutter separating the space in which the firing vessel is inverted and the circulation space. The space in which the firing container is inverted may be provided with shutters at the entrance and exit along the circulation line.

The continuous firing system may further include a controller, and the inversion mechanism may be configured such that a shutter is closed when the firing container is turned upside down. The shutter may comprise a blocking member that overhangs the space in which the firing vessel is inverted at the entrance and exit along the circulation line.

The supply unit includes a hopper that stores the material to be fired, a feeder that supplies the material to be fired from the hopper to the firing container, and a second cover that isolates the space in which the material to be fired is supplied to the firing container from the outside space. may be provided. In this case, the space surrounded by the second cover is preferably continuous with the space surrounded by the hood of the circulation line.

FIG. 1 is a plan view schematically showing a continuous firing system 1. FIG. FIG. 2 is a side view schematically showing the linear transport section 41 of the circulation line 20. As shown in FIG. FIG. 3 is a side view schematically showing the reversing mechanism 51. As shown in FIG. FIG. 4 is a front view schematically showing the reversing mechanism 51. As shown in FIG. FIG. 5 is a side view schematically showing the reversing mechanism 51. As shown in FIG. FIG. 6 is a front view schematically showing the reversing mechanism 51. As shown in FIG. FIG. 7 is a side view showing circulation line 20A in another embodiment. FIG. 8 is an enlarged view of the take-out device 50a.

One typical embodiment of the present disclosure will be described in detail below with reference to the drawings. In the drawings below, members and portions having the same function are denoted by the same reference numerals. Also, the dimensional relationships (length, width, thickness, etc.) in each drawing do not reflect the actual dimensional relationships. Up, down, left, right, front, and rear directions are indicated by arrows U, D, L, R, F, and Rr, respectively. Here, the orientations of up, down, left, right, front, and rear are defined for convenience of explanation only, and do not limit the present invention unless otherwise specified.

FIG. 1 is a plan view schematically showing a continuous firing system 1. FIG. The continuous firing system 1 comprises a continuous firing furnace 10 and a circulation line 20, as shown in FIG.

<Continuous firing furnace 10>
The continuous firing furnace 10 has a tunnel-shaped furnace body 13 . A tunnel-shaped furnace body 13 has an inlet 11 at one end and an outlet 12 at the other end. In FIG. 1, the carry-out port 12 side of the continuous firing furnace 10 is the front, the carry-in port 11 side is the rear, and left and right are defined from the carry-in port 11 to the carry-out port 12 of the continuous firing furnace 10 . The tunnel-shaped furnace body 13 is provided with a transfer space 13 a through which the firing container A is transferred from the inlet 11 to the outlet 12 . The furnace body 13 is surrounded by a furnace wall made of a heat insulating material over the entire periphery in the transfer direction of the transfer space 13a. The furnace wall may be, for example, laminated with ceramic fiberboards molded into a predetermined shape. A ceramic fiber board is, for example, a plate material formed by adding an inorganic filler and an inorganic/organic binder to a so-called bulk fiber and molding it into a plate shape. The thickness of the furnace wall is set to a required thickness that sufficiently insulates the heat in the transfer space 13a.

In this embodiment, although illustration is omitted, inside the furnace body 13, transport rollers for transporting the firing container A to a transport space 13a extending from the carry-in port 11 to the carry-out port 12 are arranged. In this embodiment, the conveying path of the continuous firing furnace 10 is set along a straight line. The conveying roller is a roller having a cylindrical shaft shape, and penetrates the furnace body 13 along a direction orthogonal to the conveying space 13a. A ceramic roller is used as the transport roller. The conveying rollers are aligned in the conveying space 13a at a predetermined pitch so as to support the baking container A. As shown in FIG. A driving device for rotating the conveying rollers is provided outside the furnace body 13 . A plurality of heaters, a gas introduction pipe, an exhaust pipe, and the like are arranged inside the furnace body 13 . The heater is a device that heats the object to be processed in the transfer space 13a. Further, the transfer space 13a of the furnace body 13 may be provided with partitions that partition the transfer space 13a into zones of appropriate lengths. Further, it is preferable that the temperature and atmospheric gas can be controlled for each zone. Further, all the members arranged inside the furnace body 13 may be made of ceramic.

Here, a plurality of ceramic rollers (conveyance rollers) are aligned in height and arranged at a predetermined pitch along the conveyance path of the furnace body 13 . Each ceramic roller is rotationally driven to transport the firing container A along the transport path. A continuous kiln in which products are conveyed by ceramic rollers in this way is called a roller hearth kiln (RHK). Note that the structure of the continuous firing furnace 10 is not limited to the structure illustrated here unless otherwise specified. Various structures can be adopted for the continuous firing furnace 10 . The continuous firing furnace 10 may be a so-called pusher furnace. Unlike the roller hearth kiln (RHK), the pusher kiln does not have transport rollers for transporting the firing container A, and the product placed on the table is transported while sliding on ceramic rails. The table is conveyed by being pushed by the pushers in sequence.

Although illustration is omitted here, in this embodiment, the furnace body 13 of the continuous firing furnace 10 is arranged on a base set at a predetermined height. The base may have a space below the space in which the furnace body 13 is arranged. In the space under the furnace body 13 composed of the base, there is provided an air supply pipe for adjusting the atmosphere gas in the continuous firing furnace 10, and a driving device such as a motor for driving the conveying roller is provided. You can get it.

《Circulation line 20》
The circulation line 20 is a carrier line for circulating the firing container A with respect to the continuous firing furnace 10 . The circulation line 20 is provided with a conveying device 26 for conveying the firing container A, such as a conveying roller and a driving device. In this embodiment, the circulation line 20 has a circulation space 22 outside the continuous firing furnace 10 from the outlet 12 to the inlet 11 of the continuous firing furnace 10 . A transport device for transporting the firing container A is incorporated in the circulation space 22 . The circulation space 22 continues to the transfer space 13a of the continuous firing furnace 10, and forms an annular transfer route along which the firing containers A circulate together with the transfer space 13a of the continuous firing furnace 10. The circulation space 22 is separated from the external space by a hood 21 as a whole.

<Hood 21>
The hood 21 should just cover the circumference|surroundings of the circulation space 22, and should separate it from external space. For example, the hood 21 may cover a conveying device, such as a conveying roller, arranged inside the circulation space 22 in a tunnel shape. Further, for example, when the floor of the space in which the circulation space 22 is provided is airtight, the hood 21 is combined with the floor of the space in which the circulation space 22 is provided so that the circulation space 22 is outside. It may be separated from the space. In this case, the floor of the space may be a painted floor coated with an antistatic floor material or the like to ensure airtightness.

The hood 21 is preferably airtight enough to block outside air. Thereby, the atmosphere of the circulation space 22 covered with the hood 21 can be maintained at a predetermined atmosphere. From this point of view, the hood 21 is preferably made of an airtight and chemically stable polycarbonate, polyethylene terephthalate, glass panel member, or the like. In addition, the panel member may use a suitable metal as a base material so as to ensure more reliable airtightness (gas permeability). Moreover, it is preferable that a sealing material is appropriately interposed between the members constituting the hood 21 and the joints between the hood 21 and other devices. For such a hood 21, for example, a panel material constituting an environmental test chamber capable of adjusting the inside of the test chamber to a predetermined atmosphere, or the like is appropriately used.

In this embodiment, the circulation line 20 is provided outside the continuous firing furnace 10 , and a circulation space 22 extending from the carry-out port 12 to the carry-in port 11 of the continuous firing furnace 10 is separated from the external space by a hood 21 . In other words, the hood 21 provided in the circulation line 20 isolates the circulation space 22 in which the baking container A circulates from the outside space. Moreover, the atmosphere of the circulation space 22 can be adjusted by providing the hood 21 . For example, even if the material to be fired before firing or the fired material that has been fired is a material that reacts with oxygen or water vapor in the air, the atmosphere of the circulation space 22 is adjusted so that can suppress the reaction with oxygen and water vapor. Therefore, the material to be fired can be supplied to the continuous firing furnace 10 while maintaining the quality of the material to be fired before being fired, and can be taken out while the quality of the fired material fired by the continuous firing furnace 10 is maintained. be able to. This creates a more stable product.

The circulation line 20 is preferably equipped with at least one replacement chamber 31-35. Here, the replacement rooms 31 to 35 refer to rooms that can be separated from other spaces. The substitution chambers 31 to 35 can be spaces that can adjust the indoor atmosphere. The substitution chambers 31 to 35 are respectively provided on the transport path of the circulation line 20, and shutters are provided to separate the spaces before and after the transport path (that is, the first substitution chamber 31 on the continuous firing furnace 10 side and the opposite side thereof). 31a-35a, 31b-35b (see FIGS. 1 and 2) are provided. The replacement chambers 31 to 35 function as partitions that partition the circulation line 20 appropriately. In this embodiment, since the circulation line 20 is entirely covered with the hood 21, the atmosphere inside the circulation line 20 can be controlled. By providing circulation line 20 with at least one replacement chamber 31 to 35, circulation line 20 can be partially delimited. Therefore, the atmosphere of the circulation line 20 can be partially adjusted. In addition, for example, when trouble such as damage to the firing container A occurs in any area of the circulation line 20, the circulation line 20 The area where the trouble occurred can be partitioned off. As a result, troubles occurring in the circulation line 20 can be easily resolved.

<First replacement chamber 31>
For example, in this embodiment, the circulation line 20 is provided with a first replacement chamber 31 at one end of the furnace body 13 of the continuous firing furnace 10 on the inlet 11 side. When the firing container A is introduced into the first replacement chamber 31, for example, the shutter 31b on the continuous firing furnace 10 side of the first replacement chamber 31 is closed, and the shutter 31a on the opposite side is opened. . Then, the firing container A is introduced into the first substitution chamber 31 in this state. Next, the shutter 31a on the side opposite to the continuous firing furnace 10 side is closed to lock the firing container A in the first replacement chamber 31, and the gas atmosphere in the first replacement chamber 31 is adjusted. For example, the first substitution chamber 31 may be adjusted to a predetermined gas atmosphere suitable for being introduced into the inlet 11 of the continuous firing furnace 10 . For example, the gas composition, temperature, pressure, etc., of the first substitution chamber 31 may be appropriately adjusted. A mechanism for adjusting the gas atmosphere may be appropriately incorporated in the first substitution chamber 31 . The first substitution chamber 31 thus functions as a control chamber for making it difficult for the atmosphere in the circulation line 20 to enter the atmosphere in the furnace body 13 of the continuous firing furnace 10 . For example, the pressure in the first substitution chamber 31 may be adjusted to be lower than the pressure inside the furnace body 13 of the continuous firing furnace 10 . After the atmosphere of the first replacement chamber 31 is adjusted, the shutter 31b on the inlet 11 side of the continuous firing furnace 10 is opened, and the firing container A is carried out from the first replacement chamber 31 to the inlet 11 of the continuous firing furnace 10. should be. As a result, the atmosphere in the first substitution chamber 31 is less likely to affect the interior of the furnace body 13 of the continuous firing furnace 10 . The space between the first substitution chamber 31 and the inlet 11 of the continuous firing furnace 10 is preferably covered with a hood 11a to be shielded from the external atmosphere.

<Second replacement chamber 32>
In this embodiment, the circulation line 20 is provided with a second replacement chamber 32 at one end of the furnace body 13 of the continuous firing furnace 10 on the carry-out port 12 side. When the firing container A is introduced into the second replacement chamber 32, for example, the shutter 32b on the side opposite to the continuous firing furnace 10 side of the second replacement chamber 32 is closed, and the continuous firing furnace 10 side is closed. is opened. Then, the firing container A is introduced into the second substitution chamber 32 in this state. Next, the shutter 32a on the continuous firing furnace 10 side is closed to lock the firing container A in the second substitution chamber 32, and the gas atmosphere in the second substitution chamber 32 is adjusted. For example, the second substitution chamber 32 may be adjusted to a predetermined gas atmosphere suitable for being introduced into the circulation line 20 . The second substitution chamber 32 functions as a control chamber for making it difficult for the atmospheric gas in the continuous firing furnace 10 to enter the circulation line 20 . For example, even if a poisonous gas such as hydrogen sulfide is generated in the continuous firing furnace 10 by firing, the provision of the second replacement chamber 32 prevents such gas generated in the continuous firing furnace 10 from being generated. Entry into the circulation line 20 can be suppressed. A hood 12a preferably covers a space between the discharge port 12 of the continuous firing furnace 10 and the second substitution chamber 32 so as to be shielded from the external atmosphere. After the atmosphere of the second substitution chamber 32 is adjusted, the shutter 32a on the inlet 11 side of the continuous firing furnace 10 is closed, the shutter 32b on the circulation line 20 side is opened, and the second substitution chamber 32 is discharged from the circulation line 20. It is preferable that the firing container A is carried out at .

The circulation line 20 comprises a withdrawal unit 23 and a supply unit 24 . The take-out unit 23 is a device unit for taking out the baked product from the baking container A. As shown in FIG. The supply unit 24 is a device unit that supplies an unfired object to be fired to the firing container. The take-out unit 23 and the supply unit 24 are connected to a circulation space 22 surrounded by a hood 21, respectively. It is preferable to have processing spaces 23a and 24a separated from the external space. As a result, in the circulation line 20, it is possible to take out the fired material from the firing vessel A and supply the fired material to the firing vessel A in the space separated from the external space. Therefore, the firing process can be performed while maintaining high quality of the fired material fired in the continuous firing furnace 10 and the fired material introduced into the continuous firing furnace 10 .

The supply unit 24 is provided closer to the carry-in port 11 side of the continuous firing furnace 10 than the take-out unit 23 in the circulation line 20 . As a result, after the treated fired material is taken out from the circulation line 20 in the take-out unit 23 , the unfired fired material is supplied in the supply unit 24 . For this reason, the unfired fired material is less likely to be mixed with the treated fired material taken out from the take-out unit 23 .

In this embodiment, the circulation line 20 comprises a third substitution chamber 33, a fourth substitution chamber 34 and a fifth substitution chamber 35. As shown in FIG. The third replacement chamber 33, the fourth replacement chamber 34, and the fifth replacement chamber 35 are each surrounded by partition walls. The third substitution chamber 33 is provided upstream of the take-out unit 23 in the circulation line 20 . In other words, the third replacement chamber 33 is provided in the circulation line 20 between the carry-out port 12 of the furnace body 13 and the take-out unit 23 . Therefore, when trouble occurs in the take-out unit 23 or in the upstream side of the take-out unit 23, by closing the third replacement chamber 33, the circulation line 20 and the upstream side of the take-out unit 23 can be It can be separated from the take-out unit 23 . For this reason, troubles in the take-out unit 23 and the upstream side of the take-out unit 23 can be easily resolved.

A fourth replacement chamber 34 is provided between the take-out unit 23 and the supply unit 24 . Therefore, the circulation line 20 can be partitioned between the take-out unit 23 and the supply unit 24 when trouble occurs in the take-out unit 23 or in the supply unit 24 . Troubles in the take-out unit 23 and the supply unit 24 can be easily resolved.

The fifth replacement chamber 35 is provided downstream of the supply unit 24 in the circulation line 20 . Therefore, when trouble occurs in the supply unit 24 or when trouble occurs downstream of the supply unit 24, the circulation line 20 on the downstream side of the supply unit 24 can be partitioned off. Therefore, troubles in the supply unit 24 and the downstream side of the supply unit 24 can be easily resolved.

<External branch lines 81 to 84>
Also, in this embodiment, the circulation line 20 is at least partially branched from the circulation line 20 and comprises at least one external branch line 81 - 84 extending outside the circulation space 22 . The provision of such external branch lines 81 to 84 facilitates taking out the firing container A from the circulation line 20 and introducing the firing container A into the circulation line 20 . Further, since the circulation line 20 is provided with a plurality of external branch lines 81 to 84, the calcination container A can be taken out and introduced at a plurality of positions. For this reason, it becomes easy to solve the problem of the circulation line 20 covered with the hood 21 in particular.

<Replacement chambers 91 to 94>
Furthermore, in this embodiment, the external branch lines 81-84 are provided with replacement chambers 91-94 at the ends where they join the circulation line 20. As shown in FIG. The replacement chambers 91 to 94 are provided with shutters 91a to 94a and 91b to 94b (see FIGS. 1 and 2) on the side of the external branch lines 81 to 84 and the side where the circulation line 20 joins, respectively. The replacement chambers 91-94 are preferably closed with shutters 91a-94a and 91b-94b. When the firing container A is taken out from the circulation line 20 or introduced into the circulation line 20, one of the shutters on the side where the firing container A is introduced is opened. Then, when the firing container A is introduced into the replacement chambers 91-94, the shutter is closed and the atmosphere of the replacement chambers 91-94 is adjusted. After that, the other shutter is opened and the baking container A is carried out from the replacement chambers 91-94. In this way, the replacement chambers 91-94 are arranged so that the atmosphere of the external branch lines 81-84 does not affect the circulation line 20 when the firing vessel A is taken out or introduced through the external branch lines 81-84. can be adjusted.

Next, the configuration of the circulation line 20 in this embodiment will be further described. In this embodiment, the conveying path of the continuous firing furnace 10 is set along a straight line as shown in FIG. On the other hand, the circulation line 20 has a linear transfer section 41 , a first connection section 42 and a second connection section 43 . The circulation line 20 has a linear transport section 41 . FIG. 2 is a side view schematically showing the linear transport section 41 of the circulation line 20. As shown in FIG.

<Linear transport unit 41>
As shown in FIG. 1, the linear conveying unit 41 is provided in the circulation line 20 at a position away from the continuous firing furnace 10, and along a straight line parallel to the conveying route of the continuous firing furnace 10. This is the transportation part. The first connection part 42 is a connection part that continues to the outlet 12 side of the continuous firing furnace 10 in the circulation line 20 and connects the transport path of the continuous firing furnace 10 and the linear transport part 41 . The second connection part 43 is a connection part that continues to the inlet side of the continuous firing furnace 10 and connects the transport path of the continuous firing furnace 10 and the linear transport part 41 . In this manner, the circulation line 20 has a linear conveying section 41 parallel to the continuous firing furnace 10 along a straight line. The entire continuous firing system, including the circulation line 20, can be installed in a substantially rectangular space, and the overall space of the continuous firing furnace 10 is reduced.

<First connecting portion 42>
In this embodiment, the first connection portion 42 includes a first extension portion 42a and a bridge portion 42b. The first extending portion 42 a is a conveying portion that extends linearly continuously from the conveying path of the continuous firing furnace 10 at the outlet 12 of the continuous firing furnace 10 . In the form shown in FIG. 1, the first extension part 42a is short, but the length can be appropriately adjusted depending on the form of the linear transport part 41. As shown in FIG. The bridging portion 42 b is a conveying portion that connects one end of the first extending portion 42 a of the circulation line 20 and one end of the linear conveying portion 41 on the outlet 12 side of the continuous firing furnace 10 . A roller conveyor and its driving device are incorporated in the bridge portion 42b. Branch portions 42b1 and 42b2 are provided at both ends of the bridging portion 42b, that is, the portion where the first extending portion 42a and the bridging portion 42b intersect and the portion where the bridging portion 42b and the linear transport portion 41 intersect. there is

<Branch portion 42b1>
The branch portion 42b1 incorporates roller conveyors oriented in different directions so as to move the baking container A in the direction in which the first extension portion 42a extends and in the direction in which the bridge portion 42b extends. In this embodiment, a roller for moving the firing container A in the direction in which the bridging portion 42b extends protrudes from a gap in the roller group for moving the firing container A in the direction in which the first extending portion 42a extends. . At the branch portion 42b1, the rollers for moving the baking container A in the direction in which the bridge portion 42b extends are pushed out as appropriate and driven. As a result, the baking container A introduced from the first extending portion 42a into the branch portion 42b1 is carried out to the bridging portion 42b.

<Branch portion 42b2>
The branch portion 42b2 incorporates roller conveyors oriented in different directions so as to move the firing container A in the direction in which the linear transport portion 41 extends and in the direction in which the bridging portion 42b extends. In this embodiment, the rollers for moving the firing container A in the direction in which the bridging portion 42b extends protrude from the gap between the roller group for moving the firing container A along the direction in which the linear conveying portion 41 extends. there is Then, the firing container A is introduced from the bridge portion 42b into the branch portion 42b2 by pushing out the roller for moving the firing container A in the direction in which the bridge portion 42b extends at the branch portion 42b1. Then, the rollers for moving the baking container A in the direction in which the bridge portion 42b extends are retracted below the roller group for moving the baking container A in the direction in which the linear conveying portion 41 extends, and baking is performed along the direction in which the linear conveying portion 41 extends. The roller group for moving the container A is driven. As a result, the firing container A introduced from the bridging portion 42b to the branch portion 42b2 is transported to the linear transport portion 41. As shown in FIG.

<Second connecting portion 43>
In this embodiment, the second connecting portion 43 includes a second extending portion 43a and a bridging portion 43b. The second extending portion 43 a is a conveying portion that extends linearly continuously from the conveying path of the continuous firing furnace 10 at the inlet 11 of the continuous firing furnace 10 . The bridging portion 43 b is a conveying portion that connects one end of the second extending portion 43 a of the circulation line 20 and one end of the linear conveying portion 41 on the carry-in port 11 side of the continuous firing furnace 10 . A roller conveyor and its driving device are incorporated in the bridge portion 43b. Branch portions 43b1 and 43b2 are provided at both ends of the bridging portion 43b, that is, the portion where the second extending portion 43a and the bridging portion 43b intersect and the portion where the bridging portion 43b and the linear transport portion 41 intersect, respectively. there is The bridging portion 43b is surrounded by a tunnel-shaped hood 21. As shown in FIG. The branch portions 43b1 and 43b2 have the same structure as the branch portions 42b1 and 42b2 on the outlet 12 side described above. Of these, the branching portion 43b2 incorporates roller conveyors oriented in different directions so that the baking container A introduced from the linear conveying portion 41 into the branching portion 43b2 can be delivered to the bridging portion 43b. Further, in the branch portion 43b1, roller conveyors with different directions are incorporated so that the baking container A introduced into the branch portion 43b1 from the bridge portion 43b can be delivered to the second extension portion 43a.

According to this circulation line 20, as shown in FIG. 42b, branching portion 42b2, linear conveying portion 41, branching portion 43b1, bridging portion 43b, branching portion 43b2, second extending portion 43a, and introduced into inlet 11 of continuous firing furnace 10. Here, the first extending portion 42a, the branching portion 42b1, the bridging portion 42b, the branching portion 42b2, the linear conveying portion 41, the branching portion 43b1, the bridging portion 43b, the branching portion 43b2, and the second extending portion 43a, which constitute the circulation line 20. may each have a hood 21 separating the circulation space 22 from the external space. As described above, the circulation space 22 in which the baking container A circulates can be adjusted to an appropriate atmosphere by having the hood 21 at each part of the circulation line 20 . For example, the calcination vessel A can be circulated without being exposed to the outside atmosphere. Therefore, it is possible to maintain high quality of the object to be baked and the object to be baked. Moreover, even when it is necessary to handle the object to be fired or the object to be fired in a unique atmosphere, leakage of the atmosphere to the outside can be suppressed. Therefore, the influence on the external environment can be kept small.

In this embodiment, the first replacement chamber 31 is provided at the end of the second extension 43a of the circulation line 20 provided on the inlet 11 side of the continuous firing furnace 10 . A second substitution chamber 32 is provided at the end of the first extending portion 42a of the circulation line 20 provided on the outlet 12 side of the continuous firing furnace 10 . The first substitution chamber 31 and the second substitution chamber 32 function as control chambers in which the continuous firing furnace 10 and the circulation line 20 separate the atmosphere.

An external branch line 82 is provided at the branch portion 42b1. An external branch line 83 is provided at the branch portion 42b2. An external branch line 83 is provided in the branch portion 43b1. An external branch line 81 is provided at the branch portion 43b2. Therefore, the firing container A can be taken out or introduced into each of the branch portions 42b1, 42b2, 43b1, and 43b2. Substitution chambers 91 to 94 are provided in the external branch lines 81 to 84, respectively. The external branch lines 81-84 are suitably separated from the circulation line 20 by the substitution chambers 91-94 being closed. In addition, the external branch line and the replacement chamber may be provided at appropriate positions in the circulation line 20 . The positions where the external branch line and the replacement chamber are provided are not limited to the form shown in FIG. 1, and may be added or omitted as appropriate.

FIG. 2 is a side view showing the linear transport section 41. As shown in FIG. As shown in FIG. 2 , in this embodiment, the linear conveying section 41 extends from a branching section 42b2 at one end of a bridge section 42b arranged on the carry-out port 12 side to a bridge section 43b arranged on the carry-in port 11 side. A conveying line is formed along a straight line reaching a branching portion 43b1 at one end of the . A roller conveyer in which rollers for conveying the baking container A are arranged is provided in the linear conveying section 41 . A hood 21 covers a circulation space 22 in which the baking container A is transported. A take-out unit 23 and a supply unit 24 are provided in the linear transport section 41 . The supply unit 24 is provided closer to the carry-in port 11 side of the continuous firing furnace 10 than the take-out unit 23 in the circulation path of the circulation line 20 . As described above, the take-out unit 23 and the supply unit 24 , which complicate the apparatus configuration in the circulation line 20 , are provided in the linear transfer section 41 provided in parallel with the continuous firing furnace 10 . Therefore, the space of the circulation line 20 for circulating the firing container A in the continuous firing furnace 10 can be saved.

<<Third Substitution Chamber 33, Fourth Substitution Chamber 34, Fifth Substitution Chamber 35>>
A third replacement chamber 33 is provided on the upstream side of the take-out unit 23 in the linear transfer section 41 . Specifically, the third replacement chamber 33 is provided at a portion introduced into the linear transport section 41 from the branch portion 42 b 2 between the bridge portion 42 b and the linear transport section 41 . By providing the third replacement chamber 33 at such a portion, the linear transfer section 41 can be partitioned from the bridging section 42b and the branch section 42b2. Further, the linear transport section 41 is provided with a fifth replacement chamber 35 downstream of the supply unit 24 . Specifically, the fifth replacement chamber 35 is provided at a portion introduced into the straight transfer section 41 from the branch portion 43b1 between the straight transfer section 41 and the bridge portion 43b. By providing the fifth replacement chamber 35 at such a portion, the linear transfer section 41 can be partitioned from the bridge section 42b and the branch section 43b1. Furthermore, a fourth replacement chamber 34 is provided between the take-out unit 23 and the supply unit 24 . The fourth replacement chamber 34 can separate the portion of the linear transfer section 41 where the take-out unit 23 is provided and the portion where the supply unit 24 is provided.

<<Extraction unit 23>>
The take-out unit 23 comprises at least one take-out device. In this embodiment, the firing vessel A is a set of a vessel and a lid. The take-out unit 23 has a lid removing mechanism 70a for removing the lid from the baking container A. As shown in FIG. In this embodiment, the takeout unit 23 includes a lid removing mechanism 70a, a first takeout device 50a, and a second takeout device 50b in order from the upstream side of the linear transport section 41. As shown in FIG.

<Lid removing mechanism 70a>
The lid removing mechanism 70a is provided in the linear transport section 41 and has a stopper for stopping the introduced baking container A at a predetermined position. A mechanism for removing the lid from the baking container A is provided above the lid removing mechanism 70a. The lid removing mechanism 70a may include, for example, a hand that holds the lid and a lift that lifts the hand to the top of the baking container A. In this embodiment, the lid removing mechanism 70a includes a third cover 71 that isolates the space from which the lid is removed from the baking container A and the external space. The space surrounded by the third cover 71 is continuous with the space surrounded by the hood 21 of the circulation line 20 . For this reason, the firing container A can be uncovered without coming into contact with the external atmosphere. The baking container A from which the lid has been removed is sent to the unloading devices 50a and 50b in order. In this embodiment, the lid is retained by the lid removal mechanism 70a even after firing vessel A has been delivered to unloading devices 50a, 50b. After being processed by the unloading devices 50a and 50b, the baking container A is returned to the lid removing mechanism 70a, and after the lid is set, it is sent to the supply unit 24. For this reason, in the linear transport section 41, at least between the lid removing mechanism 70a and the take-out devices 50a and 50b, the baking container A is configured to be transported in the opposite direction as appropriate. Thus, the take-out unit 23 is provided with the lid removing mechanism 70a. Therefore, the fired product can be properly taken out from the firing container A having the lid.

<Unloading device 50a, 50b>
The take-out devices 50 a and 50 b include a reversing mechanism 51 , a collection section 52 and a first cover 53 .

<Reversing mechanism 51>
The reversing mechanism 51 is a mechanism for reversing the baking container A up and down. In this embodiment, the reversing mechanism 51 is a mechanism for reversing the baking container A up and down together with the rollers of the linear transport section 41 . Contents (baked products) are discharged from the upside-down baking container A. The collecting part 52 is a part that collects the contents of the baking container A below the position where the baking container A is inverted. The first cover 53 is a cover that isolates the space in which the baking container A is turned over from the outside space. The space surrounded by the first cover 53 is continuous with the space surrounded by the hood 21 of the circulation line 20 . The baking container A is turned upside down in a space separated from the external space by the first cover 53 . Thus, in the take-out devices 50a and 50b, the space in which the baking container A is turned upside down is separated from the external space by the first cover 53. As shown in FIG. Therefore, the atmosphere in the space when the contents of the firing vessel A are discharged is properly maintained.

In this embodiment, the collector 52 is provided with a mortar-shaped collector tube 52 a below the reversing mechanism 51 . A collection pipe 52b is attached to the lower end of the collection pipe 52a, and a collection container 52c is provided at the tip of the collection pipe 52b. The calcined material dropped from the inverted calcining container A is stored in the collecting container 52c through the collecting pipe 52a and the collecting pipe line 52b. Here, the mortar-shaped collection portion of the collection pipe 52a is arranged inside the first cover 53, and the fired material is stored in the collection container 52c without coming into contact with the external atmosphere.

3 and 5 are side views schematically showing the reversing mechanism 51. FIG. 4 and 6 are front views schematically showing the reversing mechanism 51. FIG. FIG. 4 shows a view seen from the IV-IV cross section in FIG. 3 and 4 show the state before the reversing mechanism 51 is reversed. FIGS. 5 and 6 show a state in which the reversing mechanism 51 shown in FIGS. 3 and 4 is turned upside down. FIG. 6 shows a view seen from the VI-VI cross section in FIG. Here, according to FIG. 1 , the side of the carry-out port 12 of the continuous firing furnace 10 is the front, the side of the carry-in port 11 is the rear, and the left and right are defined from the carry-in port 11 to the carry-out port 12 of the continuous firing furnace 10. ing. In FIGS. 3 to 6, the front, rear, right, and left directions are defined accordingly. However, the front and rear sides of the linear transfer portion 41 in the transfer direction A1 are opposite to the front and rear sides defined in the drawing. The baking container A is introduced into the reversing mechanism 51 along the conveying direction A1 of the linear conveying section 41 indicated by the arrow in FIG.

3 and 4, the reversing mechanism 51 includes a pair of left and right rotary plates 51a and 51b, a rotary actuator 51c, a pair of left and right clamping members 51d, an unclamping mechanism 51e, and a roller 51f. , and a stopper 51g.

The pair of rotating plates 51a and 51b are arranged on both left and right sides of the linear conveying section 41 in the width direction. Each of the rotating plates 51a and 51b is a disk-shaped member. The rotating shafts 51a1 and 51b1 of the rotating plates 51a and 51b are attached to the first cover 53 of the take-out device 50a. The rotary shafts 51 a 1 and 51 b 1 of the rotary plates 51 a and 51 b are oriented in the width direction of the linear transport section 41 . The roller 51f constitutes a part of the roller conveyor of the linear transport section 41. As shown in FIG. The roller 51f is mounted on a shaft that spans the pair of rotating plates 51a and 51b. In this embodiment, four rollers 51f for supporting the firing vessel A are attached to a pair of rotating plates 51a and 51b. The height of the four rollers 51f is matched with that of the roller conveyor of the linear transport section 41, as shown in FIG.

The stopper 51g is a mechanism for stopping the baking container A at a predetermined position above the rollers 51f provided on the rotating plates 51a and 51b. As shown in FIG. 3, in this embodiment, a pair of left and right rotary plates 51a and 51b are provided with a rotation shaft 51g1 for a stopper 51g. The rotating shaft 51g1 is provided below the roller 51f and slightly behind the moving direction of the baking container A in the linear conveying section 41. As shown in FIG. The stopper 51g is arranged between the pair of left and right rotating plates 51a and 51b. The stopper 51g has a stopper piece 51g2 that extends from the rotating shaft 51g1 under the roller 51f and rises in front of the roller 51f that is arranged in front of the baking container A in the conveying direction A1. A driving mechanism for moving the stopper 51g is provided outside the pair of left and right rotary plates 51a and 51b.

FIG. 3 shows a state in which the stopper 51g is lifted and the baking container A is stopped on the rollers 51f arranged between the pair of left and right rotating plates 51a and 51b. Also, the firing vessel A is indicated by a chain double-dashed line. In this embodiment, the stopper 51g is provided with a pusher 51g3 that lifts the stopper 51g from below in front of the rotation shaft 51g1 in the transport direction A1. The pusher 51g3 has a spring compressed therein, the stopper 51g rotates upward, the stopper piece 51g2 protrudes upward from the roller 51f, and the firing container A is stopped at a predetermined position. . It is preferable that a cushioning material is attached to the portion of the stopper piece 51g2 that the baking container A hits.

On the other hand, the rotating shaft 51g1 has an operation piece 51g4 extending rearward. A cylinder mechanism 51g5 that drives the operation piece 51g4 in a lifting direction is provided under the operation piece 51g4. Although not shown, the cylinder mechanism 51g5 lifts the operation piece 51g4, thereby rotating the rotating shaft 51g1 and rotating the stopper 51g downward. As a result, the stopper piece 51g2 is lowered below the roller 51f. Then, the baking container A is transported along the transport direction A1 of the linear transport unit 41 by rotating the roller 51f. A so-called motorized roller having a built-in motor is used as the roller 51f. A terminal is provided at the end of the roller 51f. For example, as shown in FIGS. 3 and 4, the terminal provided at the end of the roller 51f is connected to the roller 51f in a posture forming a part of the roller conveyor of the linear conveying section 41, and the roller 51f is incorporated. It is preferable that an electric signal is sent to the motor to appropriately drive the roller 51f.

FIG. 3 is a diagram of a pair of left and right rotary plates 51a and 51b viewed from the axial direction of 51b1, and schematically shows the structure of the reversing mechanism 51 including the stopper 51g. Here, the stopper 51g, the rotating shaft 51g1, the pusher 51g3, and the operation piece 51g4 are attached to the pair of left and right rotary plates 51a and 51b, and rotate together with the pair of left and right rotary plates 51a and 51b. The cylinder mechanism 51g5 is fixed independently of the pair of left and right rotating plates 51a and 51b.

The reversing mechanism 51 includes a rotary actuator 51c, a pair of left and right clamping members 51d, and an unclamping mechanism 51e. The pair of left and right clamp members 51d are attached to the pair of left and right rotary plates 51a and 51b. The pair of left and right clamp members 51d are provided with clamps 51d1 inside the pair of left and right rotary plates 51a and 51b. The clamp 51d1 has a shaft penetrating through the rotating plates 51a and 51b, and a connecting portion 51d2 connected to the unclamping mechanism 51e is provided outside the rotating plates 51a and 51b. Between the clamp 51d1 and the rotary plates 51a and 51b, a spring 51d3 is housed in a compressed state.

Therefore, when the unclamping mechanism 51e is not working, the left and right clamps 51d1 are pushed inward from the rotary plates 51a and 51b, respectively. Therefore, as shown in FIGS. 3 and 4, the baking container A placed at a predetermined position on the roller 51f is sandwiched and held by the left and right clamps 51d1. It is preferable that a cushioning material is attached to a portion of the clamp 51d1 that contacts the baking container A. As shown in FIG. The unclamping mechanism 51 e is provided on the first cover 53 of the reversing mechanism 51 . The unclamping mechanism 51e includes a cylinder 51e1 and an operating shaft 51e2 driven by the cylinder 51e1. The distal end of the operating shaft 51e2 is provided with a knob portion that expands in the radial direction. On the other hand, the connecting portion 51d2 is a box-shaped member and has a recess 51d4 in which the operation shaft 51e2 is accommodated. ing.

As shown in FIGS. 3 and 4, before the rotating plates 51a and 51b are turned over, the operating shaft 51e2 of the unclamping mechanism 51e is accommodated in the recess 51d4 of the connecting portion 51d2 of the clamp 51d1. At this time, the cylinder 51e1 of the unclamping mechanism 51e extends inward with respect to the rotary plates 51a and 51b. At this time, the unclamping mechanism 51e has released the clamp 51d1, and the clamp 51d1 protrudes inwardly with respect to the left and right rotating plates 51a and 51b by the action of the spring 51d3. The baking container A, which is stopped at a predetermined position above the rollers 51f of the rotating plates 51a and 51b by the stopper 51g, is held at that position by the clamp 51d1. It is preferable that the clamp 51d1 is provided with a drop-off prevention piece extending so as to face the upper edge of the baking container A. As shown in FIG.

The unclamping mechanism 51e is a mechanism that pulls the connecting portion 51d2 of the clamp 51d1 outward with respect to the rotary plates 51a and 51b. In this embodiment, before the rotating plates 51a and 51b are turned over, the operating shaft 51e2 of the unclamping mechanism 51e is accommodated in the recess 51d4 of the connecting portion 51d2 of the clamp 51d1, as shown in FIGS. ing. In this state, when the operating shaft 51e2 is pulled outward with respect to the rotating plates 51a and 51b by the cylinder 51e1 of the unclamping mechanism 51e, the clamp 51d1 is pulled outward. As a result, the firing container A sandwiched between the clamps 51d1 is released. Therefore, when the firing container A is introduced into the unloading device 50a along the transport direction A1 of the linear transport unit 41, or when the firing container A is unloaded from the unloading device 50a, the unclamping mechanism 51e is used to lift the firing container. A should be open. Then, the baking container A is introduced into the unloading device 50a and stopped at a predetermined position by the stopper 51g, and the unclamping mechanism 51e is opened. When the unclamping mechanism 51e is released, the elastic reaction force of the spring 51d3 moves the clamp 51d1 inwardly with respect to the rotating plates 51a and 51b, thereby holding the baking container A as shown in FIG.

The rotary actuator 51c is connected to the rotary shaft 51a1 of the rotary plate 51a. A rotating shaft 51 a 1 of the rotating plate 51 a passes through the first cover 53 . The rotary actuator 51 c is provided outside the first cover 53 . On the other hand, the rotary shaft 51b1 of the rotary plate 51b is supported by the first cover 53 via a bearing 51b2 so as to rotate following the first cover 53. As shown in FIG. A plurality of support shafts 51h are provided in the circumferential direction on the left and right rotating plates 51a and 51b. 51 h of support shafts maintain the space|interval of the rotating plates 51a and 51b on either side. The left and right rotating plates 51a and 51b are connected by a support shaft 51h and a shaft supported by the roller 51f. Therefore, the other rotating plate 51b rotates in synchronization with the rotating plate 51a. The rotary actuator 51c has a built-in servomotor. The rotary actuator 51c rotates the pair of rotating plates 51a and 51b in a predetermined direction through the rotating shaft 51a1.

In this unloading device 50a, as shown in FIGS. 3 and 4, the reversing mechanism 51 is held at a predetermined position above the roller 51f by clamps 51d1 attached to the rotating plates 51a and 51b. Hold A. By rotating the pair of rotating plates 51a and 51b in a predetermined reversing direction by means of the rotary actuator 51c, the roller 51f and the baking container A are turned upside down together as shown in FIGS. do. As a result, the contents of the firing container A fall. Beneath the removal device 50a is a mortar-shaped collection portion of the collection tube 52a, as described above. As a result, the fired material transported from the continuous firing furnace 10 by the firing container A is stored in the collecting container 52c through the collecting pipe 52a and the collecting pipeline 52b.

Here, the reversing mechanism 51 of the take-out device 50a has been described. A similar reversing mechanism 51 is also employed in the take-out device 50b. Although one embodiment of the reversing mechanism 51 has been described, the specific structure of the reversing mechanism 51 is not limited to such a form.

<Cleaning Mechanism 54>
The unloading device 50 may further include a cleaning mechanism 54 (see FIG. 2) for cleaning the baking container A. As shown in FIG. In this embodiment, the cleaning mechanism 54 is provided in the take-out device 50b, which is arranged rearward in the traveling direction, of the two take-out devices 50a and 50b. As described above, the take-out unit 23 includes the take-out device 50 a without the cleaning mechanism 54 and the take-out device 50 b with the cleaning mechanism 54 .

In this embodiment, the cleaning mechanism 54 is composed of a brushing mechanism for brushing the inside of the baking container A. As shown in FIG. The brushing mechanism is a mechanism for brushing the inside of the baking container A placed upward from above. The cleaning mechanism 54 includes a brush and an arm for manipulating the brush, and rotates or vibrates the brush along the inside of the baking container A so that the inside of the baking container A can be brushed as a whole. is configured to The take-out device 50b equipped with such a cleaning mechanism 54 preferably turns the firing container A upside down after brushing the inside of the firing container A as a whole. The calcined material remaining in the calcining container A is dropped into the collecting pipe 52a. This makes it difficult for the fired product to remain in the firing container A, so that the fired product can be collected in the collection container 52c. A mechanism for brushing the baking container A is exemplified as the cleaning mechanism 54 . The cleaning mechanism 54 is not limited to such a form. The cleaning mechanism 54 may be an airbrush that blows air into the baking container A, for example. Alternatively, a suction device for sucking the baked product remaining in the baking container A may be used.

The take-out devices 50a and 50b are provided with shutters 55 that partition the space surrounded by the first cover 53 and the space surrounded by the hood 21 of the circulation line 20. As shown in FIG. The shutters 55 are preferably provided before and after the take-out devices 50a and 50b, respectively. The shutter 55 is preferably closed after the firing container A is introduced into the unloading devices 50a and 50b until it is unloaded. As described above, in the unloading devices 50a and 50b, the space in which the firing container A is turned upside down is separated from the external space by the first cover 53, and the space surrounded by the first cover 53 and the circulation line 20 A shutter 55 is provided to separate the space surrounded by the hood 21 . When the reversing mechanism 51 is turned upside down by closing the shutter 55, and the baking container A is turned over, or when the inside of the baking container A is cleaned by the cleaning mechanism 54, for example, when the inside of the baking container A is brushed. It is possible to prevent objects from scattering outside the take-out devices 50a and 50b.

The firing container A from which the fired material has been taken out by the take-out devices 50 a and 50 b is sent to the supply unit 24 . In this embodiment, the baking container A is returned to the lid removing mechanism 70a after the lid is removed by the lid removing mechanism 70a, and the fired material is taken out by the take-out devices 50a and 50b, and the lid is set. Then, after the lid is set, it is sent to the supply unit 24 through the linear transport section 41 . In this embodiment, a third replacement chamber 33 is provided between the takeout unit 23 and the supply unit 24 . Therefore, the atmosphere is adjusted in the third replacement chamber 33 and sent to the supply unit 24 . For example, in the extraction unit 23, the atmosphere may be adjusted according to the properties of the baked product. The atmosphere in the supply unit 24 is preferably adjusted according to the properties of the object to be fired. For example, if the material to be baked has a property of reacting with oxygen or water vapor, the supply unit 24 may adjust the oxygen concentration and the dew point.

<Supply unit 24>
The supply unit 24 comprises a supply device 60 for supplying the object to be baked. The supply device 60 has a hopper 61 , a feeder 62 and a second cover 63 . In this embodiment, the supply unit 24 comprises a second lid removal mechanism 70b for removing the lid from the baking vessel A. As shown in FIG. The lid removing mechanism 70 b is provided upstream of the supply unit 24 . The configuration of the lid removing mechanism 70b is the same as the lid removing mechanism 70a described above. Description of the lid removing mechanism 70b is omitted here. In the supply unit 24, the baking container A moves under the supply device 60 after the lid is removed by the lid removal mechanism 70b. Thus, since the supply unit 24 includes the lid removing mechanism 70b, it is possible to appropriately supply the object to be baked even to the baking container A with the lid.

The hopper 61 is a container that stores the material to be fired that is supplied to the firing container A. As shown in FIG. The hopper 61 has an inlet into which the object to be baked is introduced in the upper part, and an outlet through which the object to be baked is discharged in the lower part. A feeder 62 is connected to the outlet. The feeder 62 is a device for supplying the sintering material from the hopper 61 to the sintering vessel A. A predetermined amount of material to be fired is supplied to the firing container A from the hopper 61 . The second cover 63 is a cover that isolates the space in which the object to be fired is supplied to the firing container A from the outside space. The space surrounded by the second cover 63 is continuous with the space surrounded by the hood 21 of the circulation line 20 . The space surrounded by the second cover 63 is preferably adjusted with a required atmospheric gas. This maintains the quality of the object to be fired. The supply unit 24 may be further provided with a mechanism for leveling the material to be fired put into the firing vessel A. The leveling mechanism may be, for example, a mechanism for vibrating the baking container A to level the contents. A blade operated along the firing vessel A may also be provided.

The supply unit 24 introduces the firing vessel A from which the fired material has been taken out by the take-out unit 23 . In the supply unit 24, the lid is removed from the baking container A by the lid removing mechanism 70b. After that, it is sent to the supply device 60, and after the object to be baked is supplied, it is returned to the lid removing mechanism 70b and the lid is set. After the lid is set, the firing container A is sent to the continuous firing furnace 10 through the linear transfer section 41 .

The continuous firing system 1 may be equipped with a controller 100 as shown in FIG. The control device 100 may be configured, for example, to control the transportation of the firing vessel A in the continuous firing furnace 10 and the circulation line 20 . For example, in the take-out unit 23 arranged in the circulation line 20, each process in the lid removing mechanism 70a, the first take-out device 50a, and the second take-out device 50b, and the transportation of the baking container A are performed. It may be controlled by a predetermined sequence control. Further, in the supply unit 24, the lid removing mechanism 70b, the feeder 62, the transportation of the baking container A, and the like are preferably controlled by predetermined sequence control. Furthermore, the opening and closing of the substitution chambers 31 to 35, the control of the ambient gas, and the transfer at the branch portions 42b1, 42b2, 43b1, 43b2, etc., may also be controlled by sequence control. This can provide a continuous firing system with less manual intervention. Although sequence control is mentioned here, it is not limited to sequence control, and the firing container A may be sensed and controlled. The continuous firing system 1 may employ various control methods as appropriate.

As described above, the continuous firing system 1 includes the circulation line 20 for circulating the firing container A with respect to the continuous firing furnace 10 . The circulation line 20 has a hood 21 that separates a circulation space 22 extending from the carry-out port 12 to the carry-in port 11 of the continuous kiln 10 outside the continuous kiln 10 from the external space. Therefore, in the circulation line 20, the quality of the object to be baked and the object to be baked can be maintained at a high level.

A take-out unit 23 and a supply unit 24 are provided in the circulation line 20 . The take-out unit 23 and the supply unit 24 each have a cover that separates the internal space from the external space. The space surrounded by the cover is continuous with the space surrounded by the hood 21 of the circulation line 20. - 特許庁Therefore, the baked product can be taken out without being exposed to the external atmosphere. Moreover, the object to be fired can be supplied to the firing vessel A without being exposed to the external atmosphere. From this point of view, the continuous firing system 1 is not limited to the embodiment described above.

FIG. 7 is a side view showing circulation line 20A in another embodiment. The circulation line 20A shown in FIG. 7 is arranged at a low position as a whole, but the take-out unit 23 arranged in the linear transport section 41 is at a high position so that the worker can enter under the take-out unit 23. are placed. This facilitates handling of the collection container 52c. Also, the circulation line 20A can be lowered at other locations. Therefore, the height of the hopper 61 of the supply unit 24 can be kept low. Also, the size of the collection container 52c can be increased. In this case, lifters 101 and 102 for raising and lowering the firing container A may be provided before and after the take-out unit 23, respectively.

Further, in this embodiment, of the hood 21A of the circulation line 20A, the portion of the hood 21A1 provided with the front and rear lifters 101 and 102 and the take-out unit 23 is integrally constructed. The hood 21A1 of this portion is raised from the floor of the space where each piece of equipment is placed. Thus, the hood 21A1 of the circulation line 20 may separate the circulation space 22 from the external space together with the floor of the space in which the circulation space 22 is provided. In this case, the floor of the space may be a painted floor coated with an antistatic floor material or the like to ensure airtightness. In this case, the device within the hood 21A1 may suitably lack a separate cover, shutter, or the like.

Further, in this embodiment, two take-out devices 50 each having a reversing mechanism 51 are provided for the take-out unit 23 . A cleaning mechanism 54 is provided in one take-out device 50b. The configuration of the extraction unit 23 is not limited to such a form. For example, the take-out unit 23 may be provided with one take-out device 50 provided with the reversing mechanism 51 and the cleaning mechanism 54 . In this case, the baking container A is turned over once by the turning mechanism 51 . Next, after the firing container A is cleaned (for example, brushed) by the cleaning mechanism 54, the firing container A is turned over. In this manner, one take-out device 50 may reverse the firing container A in two steps. In this case, one take-out device 50 may be used when turning over one firing container A to take out the fired product.

Further, in this embodiment, the take-out unit 23 and the supply unit 24 of the circulation line 20 are provided in one linear transport section 41 . A plurality of take-out units 23 and a plurality of supply units 24 may be arranged in the circulation line 20 so that a plurality of firing containers A may be processed simultaneously. In addition, the circulation line 20 may include a plurality of transport paths arranged in parallel.

Further, in this embodiment, the take-out unit 23 and the supply unit 24 are provided in the linear transfer section 41 of the circulation line 20, respectively. The positions where the take-out unit 23 and the supply unit 24 are provided are not limited to these parts. The extraction unit 23 may be provided, for example, at the first connecting portion 42 of the circulation line 20, for example, the bridge portion 42b. The supply unit 24 may be provided, for example, at the second connection portion 43 of the circulation line 20, for example, the bridge portion 43b. Thus, the arrangement of the take-out unit 23 and the supply unit 24 in the circulation line 20 is not limited to the embodiment described above.

As described above, the continuous firing furnace 10 has the tunnel-shaped furnace body 13 forming the transport space 13a in which the firing container A is transported from the inlet 11 to the outlet 12. As shown in FIG. The circulation line 20 has a hood 21 that separates a circulation space 21a extending from the carry-out port 12 to the carry-in port 11 of the continuous firing furnace 10 outside the continuous firing furnace 10 from the external space, and at least one work booth. . Here, the "work booth" is a booth provided with take-out devices 50a and 50b in the form shown in FIGS.

As shown in FIGS. 1 and 2, the unloading devices 50a and 50b have a first cover 53 and a shutter 55 for separating a working space for unloading the fired material from the firing container A and an external space. . The space surrounded by the first cover 53 is continuous with the space surrounded by the hood 21 of the circulation line 20 . The space surrounded by the first cover 53 and the space surrounded by the hood 21 of the circulation line 20 are separated by the shutter 55 . Thus, the work booth may be a booth provided with take-out devices 50a and 50b for taking out the fired product from the firing container A transported along the circulation line 20. FIG.

In the work booth provided with such take-out devices 50a and 50b, the shutter 55 should be appropriately closed when taking out the fired material from the firing vessel A. As a result, the atmosphere of the working space for taking out the fired product from the firing vessel A is cut off from the outside space. Therefore, the work in the unloading devices 50a and 50b is less likely to be affected by the atmosphere of the circulation line 20 outside the unloading devices 50a and 50b. In addition, the work in the unloading devices 50a and 50b is less likely to affect the atmosphere of the circulation line 20. FIG. This improves the quality of the baked product taken out. Here, take-out devices 50a and 50b are exemplified as an example of work booths provided in the circulation line 20, but work booths are limited to booths provided with take-out devices 50a and 50b for taking out fired products from the firing vessel A. not. As other work booths provided in the circulation line 20, for example, a booth for supplying the object to be fired to the firing container A or a booth for removing the lid from the firing container A may be provided with a shutter.

Here, as the work booth, a booth in which the unloading work is performed and which is provided with the unloading devices 50a and 50b is exemplified, but the work booth is not limited to the booth in which the unloading work is performed. According to the continuous baking system 1, the work booth, like the unloading devices 50a and 50b, preferably has a cover 53 and a shutter 55 for separating the work space from the outside space. The space surrounded by the cover 53 is continuous with the circulation space 22 surrounded by the hood 21 of the circulation line 20 . The space surrounded by the cover 53 and the circulation space 22 surrounded by the hood 21 of the circulation line 20 are appropriately separated by the shutter 55 . By closing the shutter 55, the work in the work booth is less likely to be affected by the atmosphere of the circulation line 20 outside the work booth. Also, the work in the work booth is less likely to affect the atmosphere of the circulation line 20 .

In the form shown in FIG. 2, the unloading devices 50a, 50b are provided with shutters 55 at the entrance and exit along the circulation line 20, respectively. FIG. 8 is an enlarged view of the take-out device 50a. Although an enlarged view of the take-out device 50b is omitted, the take-out device 50b has the same structure as the take-out device 50a.

As shown in FIG. 8, the take-out device 50a is provided with shutters 55 at an inlet 501 and an outlet 502 along the circulation line 20, respectively. As a result, the work space 503 in which the work of unloading the baked products is performed in the unloading devices 50a and 50b is completely separated from the circulation line 20. As shown in FIG. Therefore, the fired product is less likely to scatter outside the work space 503, in this embodiment, outside the first cover 53 of the unloading device 50a into the circulation line 20. As shown in FIG. In particular, in the form described above, the take-out devices 50a and 50b include an inversion mechanism 51 that inverts the firing container A upside down, and a collecting unit 52 that collects the contents of the firing container A below the position at which the firing container A is inverted. and As described above, when the reversing mechanism 51 is provided, the fired product is likely to scatter. On the other hand, in this embodiment, the work space 503 in which the work of taking out the fired material is performed in the take-out devices 50a and 50b by the shutter 55, that is, the space in which the firing container A is turned over is separated from the circulation line 20 by the shutter 55. completely partitioned. Also, the working space 503 is surrounded by the first cover 53 . For this reason, the fired product is less likely to scatter outside the working space 503, and the circulation line 20 is easily kept clean.

Moreover, the continuous baking system 1 may further include a control device 100 . The control device 100 is preferably configured such that the shutter 55 is closed when the baking container A is turned upside down in the turnover mechanism 51 . That is, the control device 100 preferably controls the timing at which the firing container A is turned upside down and the timing at which the shutter 55 is closed in the turning mechanism 51 . By such control, the shutter 55 is closed at an appropriate timing so as to prevent the fired material from scattering outside the work space 503 when the firing container A is turned upside down. Good. For example, when the baking container A is turned upside down, both the shutters 55 of the entrance 501 and the exit 502 are preferably closed. The shutter 55 is preferably opened after the firing vessel A is returned upward and after the movement of the fired material in the working space 503 is stopped. As a result, the fired product is less likely to scatter outside the working space 503, and the circulation line 20 can be more easily kept clean. Also, like the take-out device 50b shown in FIG. 2, when the take-out device 50b is provided with a cleaning mechanism 54 (here, a brushing mechanism), the shutter 55 is closed when the cleaning work is performed. It's good to be This keeps the circulation line 20 outside the working space 503 clean.

The shutter 55, as shown in FIG. 8, may have a blocking member 55a that covers the entrance 501 and the exit 502 along the circulation line 20 from the outside of the work booth. In this embodiment, the closing member 55a is moved up and down by the cylinder mechanism 55b, and is pressed against the entrance 501 and the exit 502 of the work space 503 from the outside of the work space 503 where the work of taking out the baked products is performed by the link mechanism 55c. . That is, in this embodiment, the shutter 55 covers the work space 503 from the outside in the take-out devices 50a and 50b. Then, the inlet 501 and the outlet 502 of the work space 503 along the circulation line 20 are blocked. In this embodiment, the take-out device 50a is internally inverted by an inversion mechanism 51 so that the contents of the calcining vessel A pass through a mortar-shaped collection tube 52a and a collection conduit 52b disposed below and into a collection vessel 52c. be done. At this time, an air current is generated from the working space 503 toward the collection container 52c. On the other hand, the shutter 55 covers the work space 503 from the outside. Therefore, for example, even if a negative pressure is generated in the working space 503 during the unloading operation, a gap is less likely to occur between the entrance 501 and the exit 502 blocked by the shutter 55, and the contents of the baking container A are less likely to scatter outside.

In particular, the continuous firing system 1 disclosed herein includes a circulation line 20 for circulating the firing vessel A with respect to the continuous firing furnace 10 . The circulation line 20 has a hood 21 that separates a circulation space 22 extending from the carry-out port 12 to the carry-in port 11 of the continuous kiln 10 outside the continuous kiln 10 from the external space. Therefore, in the circulation line 20, the quality of the object to be baked and the object to be baked can be maintained at a high level. On the other hand, work booths such as the take-out devices 50a and 50b have a cover 53 and a shutter 55 that separate the work space from the outside space. The shutter 55 may be appropriately opened when the firing container A moves between the working space and the circulation line 20 . Since the work booth is provided with a cover 53 and a shutter 55 that separate the work space from the outside space, the atmosphere in the work space of the work booth can be controlled. In addition, since the shutter 55 is closed when the work is performed in the work space of the work booth, the influence on the atmosphere of the transfer space 13a surrounded by the hood 21 of the circulation line 20 can be suppressed.

1 and 2, but in the form shown in FIG. 7, the entire take-out unit 23 is covered with the hood 21A1. The hood 21A1 functions as a cover that isolates the work space of the take-out unit 23 from the outside space. A working space 503 of the take-out unit 23 surrounded by the hood 21A1 as the cover is provided with replacement chambers 33 and 34 at an entrance 501 and an exit 502, respectively. The working space 503 of the extraction unit 23 is blocked from the circulation line 20 by the shutter 33b on the outlet side of the replacement chamber 33 and the shutter 34a on the inlet side of the replacement chamber 34 . Thus, regarding the invention proposed here, the form of application to the continuous firing system 1 is not limited to the forms shown in FIGS. 1 and 2, and can be changed as appropriate.

Although detailed descriptions have been given above with reference to specific embodiments, these are merely examples and do not limit the scope of the claims. In addition, the disclosure herein can be modified in various ways, and each component and each process referred to here can be omitted or combined as appropriate, as long as no particular problem arises.

1 continuous firing system 10 continuous firing furnace 11 carry-in port 11a hood 12 carry-out port 12a hood 13 furnace body 13a transport spaces 20, 20A circulation lines 21, 21A hood 21A1 hood 22 in the portion where lifters 101, 102 and take-out unit 23 are provided Circulation space 23 Extraction units 23a, 24a Processing space 24 Supply unit 31 First replacement chamber 32 Second replacement chamber 33 Third replacement chamber 34 Fourth replacement chamber 35 Fifth replacement chamber 31a to 35a, 31b to 35b Shutter 41 Linear transfer unit 42 First connection portion 42a First extension portion 42b Bridge portions 42b1, 42b2 Branch portion 43 Second connection portion 43a Second extension portion 43b Bridge portions 43b1, 43b2 Branch portions 50a, 50b Extracting device 51 Reversing mechanism 51a, 51b Rotation Plates 51a1, 51b1 Rotating shaft 51b2 Bearing 51c Rotary actuator 51d Clamp member 51d1 Clamp 51d2 Connecting portion 51d3 Spring 51d4 Recess 51e Unclamping mechanism 51e1 Cylinder 51e2 Operating shaft 51f Roller 51g Stopper 51g1 Rotating shaft 51g2 Stopper piece 51g3 Pusher 51g4 Operating piece 51g5 Cylinder Mechanism 51h Support shaft 52 Collection part 52a Collection pipe 52b Collection pipe line 52c Collection container 53 First cover 54 Cleaning mechanism 55 Shutter 60 Feeder 61 Hopper 62 Feeder 63 Second covers 70a, 70b Lid removal mechanism 71 Third covers 81-84 External branch lines 91 to 94 Replacement chambers 91a to 94a, 91b to 94b Shutter 100 Control devices 101, 102 Lifter 501 Work space entrance 502 Work space exit 503 Work space A Firing container A1 Conveying direction

Claims (10)

a continuous firing furnace;
A circulation line for circulating the firing container with respect to the continuous firing furnace,
The continuous firing furnace is
Having a tunnel-shaped furnace body forming a transfer space in which the firing container from the inlet to the outlet is transferred,
The circulation line is
a take-out unit for taking out the fired product from the firing container;
a supply unit that supplies an unfired object to be fired to the firing container;
a hood outside the continuous firing furnace that separates a circulation space extending from the carry-out port to the carry-in port of the continuous firing furnace from an external space;
with
Continuous firing system. 2. The continuous firing system according to claim 1, wherein said supply unit is provided closer to said continuous firing furnace than said take-out unit in said circulation line. The conveying path of the continuous firing furnace is set along a straight line,
The circulation line is
A linear conveying part along a straight line parallel to the conveying route of the continuous firing furnace;
a first connection part that is continuous with the outlet side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport part;
a second connecting portion that is continuous with the inlet side of the continuous firing furnace and connects the conveying path of the continuous firing furnace and the linear conveying portion;
3. The continuous baking system according to claim 1 or 2, wherein said take-out unit is arranged in said linear transport section. 4. The continuous baking system according to claim 3, wherein the supply unit is arranged on the linear transport section. The take-out unit is
a reversing mechanism for reversing the firing container up and down;
a collection unit that collects the contents of the firing vessel below a position where the firing vessel is inverted;
At least one unloading device having a space in which the firing container is inverted and a first cover for blocking the outside,
The continuous baking system according to any one of claims 1 to 4, wherein the space surrounded by the first cover is continuous with the space surrounded by the hood of the circulation line. Having a shutter that separates the space in which the firing container is inverted and the circulation space,
Continuous firing system according to claim 5. 7. The continuous firing system according to claim 6, wherein the space in which the firing container is inverted has shutters at an entrance and an exit along the circulation line. further comprising a control device,
8. The continuous firing system according to claim 6 or 7, wherein in said reversing mechanism, said shutter is closed when said firing container is turned upside down. The shutter
9. A continuous firing system according to any one of claims 6 to 8, wherein the inlet and outlet along the circulation line are provided with blocking members covering from the outside of the space in which the firing vessel is inverted. The supply unit is
a hopper containing the object to be fired;
a feeder that supplies the object to be fired from the hopper to the firing container;
A second cover that isolates a space where the object to be fired is supplied to the firing container and an external space,
The space surrounded by the second cover is continuous with the space surrounded by the hood of the circulation line.
Continuous firing system according to any one of claims 1 to 9.

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