JP5762679B2 - Hot air drying equipment for food dough - Google Patents

Description

The present invention is a food dough suitable for use in producing rice crackers such as rice crackers and other light foods.
This relates to a hot air drying apparatus.

  Light foods such as confectionery such as rice crackers are manufactured through a kneading process, a rolling process, a die-cutting process, a heat-drying process, a baking process, a baking process, etc., and in particular, conveying means in the hot-air drying process and baking process A wire mesh conveyor is used (see Patent Documents 1 and 2).

  For example, in the heat drying process and baking process when manufacturing rice crackers such as rice crackers, this wire mesh conveyor is loaded with rice cracker doughs that have been cut into various shapes and thicknesses, and are used in hot air drying chambers and baking chambers. The rice cracker dough is used for hot air drying and baking. Furthermore, this wire mesh conveyor is also used when transporting from a heat drying process or a baking process to another process.

  This wire mesh conveyor has endless chains attached to both sides thereof, and a pair of endless chains are connected by a plurality of crossbars arranged at equal intervals, and stainless steel or zinc wire mesh is made of these crossbars of the same material. It is tied and attached with a wire (not shown). In the wire mesh conveyor, fasteners are attached to appropriate positions of the cross bars in order to prevent the wire mesh from being displaced.

JP 2002-34460 A Japanese Patent No. 3380786

  By the way, the above-described conventionally known wire mesh conveyor requires a sprocket as a member for passing the endless chain in addition to the driving roller and the driven roller, and also has a pair of long endless chains, a plurality of cross bars, and a wire mesh to these cross bars. It is expensive to manufacture, and it is applied between the endless chain and the guide rail, which requires the work of binding the wire with the wire, the fastener, and the guide rail installed on the machine frame for guiding the endless chain. There was a problem that the lubricating oil mixed into light food.

  Furthermore, in the baking process, there is a problem that uneven baking occurs in the rice confectionery dough and the other confectionery dough on the side where the endless chain whose temperature is lower than the other part of the wire mesh belt is provided.

The present invention has been made to solve the above-mentioned problems, and its object is to achieve downsizing and significant cost reduction, and to prevent the mixing of lubricating oil into food dough, and further to the yield of food. An object of the present invention is to provide a hot-air drying apparatus for food dough that can increase the temperature.

In order to achieve the above object, the present invention circulates in a heated atmosphere by being stretched between a driving roller and a driven roller in a long box-shaped hot air drying chamber reaching from several tens of meters to several hundreds of tens of meters. A traveling endless wire mesh belt is provided in a plurality of stages at predetermined intervals in the vertical direction, and a plurality of food doughs are arranged and placed on each wire mesh belt, and the upper wire mesh belt is sequentially moved to the lower wire mesh belt. A hot air drying device for food dough that is dried while being conveyed to the wire dough, wherein the wire mesh belt is constituted by alternately connecting a right-handed spiral material and a left-handed spiral material with a bent wire, and this wire mesh belt is used as a drive roller. The belt is driven by the driven roller and driven independently for each stage, and is engaged with the mesh of the passed wire mesh belt across the circumferential surfaces of the drive roller and the driven roller. A plurality of rows of teeth adjacent to each other in the axial direction are provided, and these teeth are below the portion of the wire mesh belt that is located above the bent wire of the right-handed spiral member and / or the left-handed spiral member. Positioned so that the bent wire side and the right-handed spiral material and / or the left-handed spiral material mesh with the portion wound around the bent wire material, and transfer from the upper wire mesh belt to the lower wire mesh belt The food dough is transferred using a conveyor, and further, the lower surface of the carrier belt and the return belt of the wire mesh belt is in contact with the carrier belt and the return belt to prevent deflection and deviation. deflection prevention means is provided, the bending preventing means, from the lower side between said drive roller and said driven roller of the carrier side belt and the return side belt A deflection preventing member composed of a plurality of bar members attached to the machine frame in cross-contact with each other in a slanted state with different inclination directions, and a predetermined interval in contact with the lower surface of the return side belt on the return side belt side And a plurality of guide rollers attached to the machine frame with a gap therebetween.

The present invention is characterized in that the hot air drying device is provided with a release agent coating device which is located outside the hot air drying chamber and applies a release agent to the return side belt.

As described above, according to the hot air drying apparatus for food dough according to the present invention, since the wire mesh belt meshes directly with the teeth of the driving roller and the driven roller, the size can be reduced and the cost can be greatly reduced. Therefore, the lubricating oil can be prevented from being mixed into the food dough, and the carrier dough can be stably conveyed without the carrier side belt being bent by the deflection preventing means.

It is a top view which shows an example of the conveyance machine for the foodstuff manufacturing apparatus which concerns on this invention. It is a top view which shows an example of the conveyance machine for the foodstuff manufacturing apparatus which concerns on this invention. It is a side view which shows an example of the conveyance machine for the foodstuff manufacturing apparatus which concerns on this invention. It is a front view which shows an example of the conveying machine for foodstuff manufacturing apparatuses which concerns on this invention. FIG. 4 is a schematic sectional view taken along line AA in FIG. 3. FIG. 6 is an enlarged view of a portion B in FIG. 5. It is a figure which shows an example of the toothed drive roller which concerns on this invention, (a) is a front view, (b) is a partially broken sectional view. It is a figure which shows the state which the tooth | gear of the toothed drive roller which concerns on this invention, and the metal-mesh belt have meshed | engaged. It is explanatory drawing which shows the other Example of a toothed roller (including a toothed driving roller and a toothed driven roller) according to the present invention. It is a figure which shows an example of the hot air drying apparatus as a foodstuff manufacturing apparatus using the conveyance machine which concerns on this invention. It is the figure which looked at the hot air drying apparatus shown in FIG. 10 from the plane. It is a figure which shows the state which the toothed drive roller which concerns on this invention, and the metal-mesh belt have meshed | engaged. It is a perspective view which shows the example of the bending prevention member which concerns on this invention. It is explanatory drawing which shows an example of the baking apparatus of the rice cracker as a foodstuff manufacturing apparatus using the conveyance machine for foodstuff manufacturing apparatuses which concerns on this invention. It is explanatory drawing which looked at a part of baking apparatus shown in FIG. 14 from the plane.

  Hereinafter, the conveyance machine for foodstuff manufacturing apparatuses concerning the present invention is explained in full detail based on an accompanying drawing.

  1 to 5 are views showing an example of a transport machine for a food production apparatus according to the present invention. As shown in FIGS. 1 to 5, a transport machine for a food production apparatus according to the present invention is used to process a light dough foodstuff such as confectionery such as rice crackers from one process (for example, a heat drying process) to another process ( For example, it is a kind of wire mesh belt conveyor for conveying to the Nekashi process. Examples of the light food include confectionery such as rice crackers, but are not limited to this rice cracker, and in the embodiment of the present invention, a case where rice crackers are used will be described.

  A transport machine 1 for a food manufacturing apparatus according to the present invention is for a food manufacturing apparatus that transports food dough on an endless wire mesh belt 4 that circulates around a drive roller 2 and a driven roller 3. A carrier side that is provided with teeth 6 that run on the mesh of the stretched wire mesh belt 4 on the peripheral surface of the drive roller 2 and that travels on the food dough. A deflection preventing member 7 is provided below the belt 4a to prevent the carrier side belt 4a from contacting with the carrier side belt 4a.

  The transport machine 1 for a food manufacturing apparatus is attached to four leg members 12 on which a slender, substantially rectangular bottom plate 11 is supported via both side plates 13, 13, for example. Casters 16 with stoppers are respectively attached to the lower portions of the leg members 12 so that the transport machine 1 can move. Moreover, the adjustment bolt 17 is each provided in the lower part of each leg member 12, Each leg member 12 can each adjust the height of the perpendicular direction individually. Further, two of the four leg members 12 are opposed to each other, and the lower portions of the opposed leg members 12 are connected to each other by a connecting member 19.

  The side plate 13 is formed in an elongated rectangular shape. The upper and lower end portions of the side plate 13 are formed with flange portions 13 a and 13 b that extend on the opposite side of the opposite side plate 13. That is, the side plate 13 is formed in a U shape (including a substantially U shape). The vicinity of the front end portion and the vicinity of the rear end portion of the flange portion 13a below the side plate 13 are detachably attached to the upper portion of the leg member 12 by bolts and nuts.

  A driven roller mounting member 14 extending in the longitudinal direction of the side plate 13 is provided on either the front end portion or the rear end portion of each side plate 13, for example, at the upper portion of the rear end portion (end portion on the rear side in the traveling direction of the wire mesh belt 4). It is attached. A bearing 31 is provided below each driven roller mounting member 14. A driven shaft 32 is provided between the bearings 31, 31, and both ends of the driven shaft 32 are rotatably supported by the bearings 31, 31. One or more driven rollers 3 are attached to the driven shaft 32 in the illustrated example. The five driven rollers 3 are arranged, for example, two in the vicinity of both ends of the wire mesh belt 4, one in the center, and one in the middle and in the middle near both ends. The number and arrangement position of the driven rollers 3 are not limited to the illustrated example. Further, the length of the driven roller 3 in the axial direction is not particularly limited. The bearing 31, the driven shaft 32, and the driven roller 3 are provided on the driven roller attachment member 14, but may be provided on the side plate 13.

  Bearings 21 and 21 are provided on either the front end portion or the rear end portion of each of the side plates 13 and 13, for example, the front end portion (the end portion on the front side in the running direction of the wire mesh belt 4). A drive shaft 22 is provided between the bearings 21 and 21, and both ends of the drive shaft 22 are rotatably supported by the bearings 21 and 21. One end portion of the drive shaft 22 is formed to extend further outward from the bearing 21, and a rotation drive device 50 for rotating the drive shaft 22, such as a motor (not shown), is provided at the one end portion. Is rotatably connected to the shaft. The rotational drive device 50 is not particularly limited as long as the drive shaft 22 can be rotationally driven.

  One or more drive rollers 22 are attached to the drive shaft 22 in the illustrated example. For example, two drive rollers 2 are arranged in the vicinity of both ends of the wire mesh belt 4, and the remaining five are arranged at equal intervals between the two. The number and arrangement position of the driving rollers 2 are not limited to the illustrated example. Further, the length of the drive roller 2 in the axial direction is not particularly limited.

  A wire mesh belt 4 is stretched between the driving roller 2 and the driven roller 3. As shown in FIG. 8, the metal mesh belt 4 is a belt having an endless endless mesh 41. The wire mesh belt 4 is not particularly limited, and examples thereof include those configured by combining a right-handed spiral material 43, a left-handed spiral material 44, and a bent wire material 45. The material of the spiral members 43 and 44 and the bent wire 45 is not particularly limited as long as it can withstand the manufacturing process of rice crackers, and examples thereof include stainless steel and zinc-drawn wire.

  As shown in FIGS. 2, 4, 7 and 8, teeth 6 are provided on the circumferential surface of the drive roller 2 so as to mesh with the mesh 41 of the stretched wire mesh belt 4 and cause the wire mesh belt 4 to circulate. ing. In the embodiment, as shown in FIG. 8 in particular, the teeth 6 are located on the upper side of the spiral member 43, that is, on the lower side of the portion 43a located on the upper side of the bent wire 45 so as not to protrude from the surface. And is engaged with the bent wire 45 side. The shape of the tooth 6 is not particularly limited as long as it meshes with the mesh 41 of the wire mesh belt 4. For example, the tooth 6 is formed in a substantially trapezoidal cross section, a substantially rectangular cross section, or the like. The number and arrangement position of the teeth 6 are not particularly limited as long as the teeth 6 can mesh with the mesh 41 of the wire mesh belt 4 and circulate the wire mesh belt 4. For example, as shown in FIG. 7, a plurality of teeth 6 are provided on the peripheral surface of the drive roller 2 with a predetermined interval in the circumferential direction, and with a predetermined interval in the axial direction of the drive roller 2. Three rows are provided. The distance between the teeth 6 in the circumferential direction of the drive roller 2 is, for example, twice (including substantially twice) the distance between the meshes 41 in the longitudinal direction of the wire mesh belt. The distance between the teeth 6 in the axial direction of the driving roller 2 is the same as the distance between the meshes 41 in the width direction of the wire mesh belt.

  The drive roller 2 provided with the teeth 6 (may be referred to as a toothed drive roller 20) may be used for all of the seven drive rollers 2, or any of the seven drive rollers 2 may be used. It may be used for the drive roller 2. For example, a total of four toothed drive rollers 20 may be used, that is, two of the seven drive rollers 2 and two of the seven drive rollers 2, one on each of the drive rollers 2. Furthermore, the drive roller 2 may be one as a whole, and the entire periphery of the drive roller may be provided, or teeth may be provided partially.

  Further, the toothed driven roller 30 may be provided by providing the tooth 6 on the peripheral surface of the driven roller 3 similarly to the toothed drive roller 20. The toothed driven roller 30 may be used for all of the five driven rollers 3 or may be used for any of the five driven rollers 3. For example, a total of three toothed driven rollers 30 may be used, that is, two of the five driven rollers 3 and one at the center. Furthermore, the driven roller 3 may be one as a whole, and the entire periphery of the driven roller may be provided, or teeth may be provided partially.

  As shown in FIGS. 2, 3, 5, and 6, a deflection preventing member 7 is provided between the side plates 13 and 13. The deflection preventing member 7 is not particularly limited as long as the deflection of the carrier side belt 4a can be prevented. The deflection preventing member 7 is attached to, for example, a connecting member 71 that connects the side plates 13 and 13.

  The connecting member 71 is formed to extend in a direction orthogonal to the traveling direction of the wire mesh belt 4. For example, the connecting member 71 is formed in a rod shape such as a circular cross section or a rectangular cross section. Both ends of the connecting member 71 are in contact with opposing surfaces (also referred to as inner surfaces) of the side plates 13 and 13, and bolts, screws, and the like from the outer surfaces (the surfaces opposite to the inner surfaces) of the side plates 13 and 13. It is attached to both side plates 13 and 13 by fixing members such as screws. The connecting member 71 is provided in the vicinity of the lower surface of the carrier side belt 4a. Although four connecting members 71 are provided in the illustrated example, the number and arrangement position thereof are not particularly limited as long as the deflection preventing member 7 can be supported without bending. The deflection preventing member 7 is attached to the upper part of the connecting member 71.

  The attachment of the deflection preventing member 7 is not particularly limited. For example, a rectangular attachment portion 72 may be fixed to the upper portion of the connecting member 71 by welding or the like and attached to the attachment portion 72. In this case, the deflection preventing member 7 is formed, for example, in a U shape, and is attached to the attachment portion 72 so that the attachment portion 72 is inserted inside the U shape (between both side portions). The deflection preventing member 7 is preferably formed of a low friction resistance material having a low frictional resistance. The low frictional resistance material is not particularly limited as long as it is a material having low frictional resistance, and examples thereof include those using polyethylene as a main raw material (trade name: Newlite, manufactured by Sakushin Kogyo Co., Ltd.). The deflection preventing member 7 is entirely formed of a low friction resistance material. However, if the low friction resistance material is provided at a location where the wire mesh belt 4 contacts, the other members are configured by other members. May be. Further, the shape of the deflection preventing member 7 is not limited to the U-shape, and may be formed in any other shape such as a circular cross section, an elliptical cross section, a rectangular cross section, or a triangular cross section. .

  The deflection preventing member 7 is formed to extend in the traveling direction of the wire mesh belt 4. The deflection preventing member 7 is formed to have a length with both ends positioned in the vicinity of the driven roller 3 and the driving roller 2. If both ends of the deflection preventing member 7 are located in the vicinity of the driven roller 3 and the driving roller 2, a plurality of deflection preventing members 7 having a short dimension are connected to each other or attached to the mounting portion 72 of the connecting member 71. You may make it form. Further, the deflection preventing member 7 is provided in two rows in the vicinity of both ends of the traveling wire mesh belt 4 and three rows in total, ie, the central portion of the wire mesh belt 4, but it can prevent the carrier side belt 4a from being bent. If possible, the number and arrangement position are not particularly limited.

  A guide roller 81 for guiding the return side belt 4b is provided between the side plates 13, 13. The guide roller 81 is pivotally supported by the side plates 13 and 13 so as to be rotatable. The length of the roller portion 81a with which the return side belt 4b of the guide roller 81 contacts is, for example, shorter than the width of the return side belt 4b, preferably slightly shorter. The number and arrangement position of the guide rollers 81 are not particularly limited. For example, it is preferable that the number of guide rollers 81 is three in the vicinity of the driving roller 2, the substantially central portion of the return side belt 4 b, and the driven roller 3.

  In addition, the food dough placed on the carrier side belt 4a is placed in the center part of the flanges above the both side plates 13 and 13 (also referred to as the upper flange part 13b) from the vicinity of both side parts of the carrier side belt 4a. A guide member 9 that guides to the side is provided. The guide member 9 may be provided in the entire region above the carrier side belt 4a, but is not particularly limited as long as the guide member 9 is provided at a placement position where the food dough is placed on the carrier side belt 4a. That is, it is provided from the upper side of the carrier side belt 4a on the driven roller 3 side to the center portion in the running direction of the carrier side belt 4a.

  The guide member 9 includes, for example, an attachment portion 91 attached to the upper flange portion 13b and a guide portion 92 attached to the attachment portion 91. The attachment portion 91 is formed in a flat plate shape, and one end thereof is attached to the upper flange portion 13b with a fixing member such as a bolt, a screw, and a screw so as to extend in a direction substantially orthogonal to the traveling direction of the wire mesh belt 4. The distal end portion which is the other end portion of the attachment portion 91 is bent upward (in a direction orthogonal to the surface of the carrier side belt 4a) and formed as a flange portion. It is preferable that a hemming process is performed at the tip of the mounting portion 91, particularly at the bent portion of the tip so that the wire mesh belt 4 is not damaged even if the wire mesh belt 4 contacts. The attachment portion 91 may be formed with a slight curve or the like. It is preferable that a gap is formed between the attachment portion 91 and the carrier side belt 4a, and this gap is formed with a size that prevents food dough from entering between the attachment portion and the carrier side belt 4a. It is preferable. The attachment position and the number of the attachment portions 91 are not particularly limited, and may be two locations from the driven roller 3 and the center portion in the traveling direction of the carrier side belt 4a as illustrated.

  The guide portion 92 is formed in an elongated flat plate shape and substantially constitutes the guide member 9. The two guide portions 92 are attached to the attachment portion 91 with screws or the like so that the two guide portions 92 face each other. The upper end portion of the guide portion 92 is bent at 90 ° (including substantially 90 °) toward the side plate 13.

  Next, the operation of the transport machine 1 for food production apparatus according to the present invention will be described.

  An endless wire mesh belt 4 is stretched between the driving roller 2 (including the toothed driving roller 20) and the driven roller 3 (including the toothed driven roller 30). At this time, the mesh 6 of the toothed drive roller 20 meshes with the mesh 41 of the wire mesh belt 4 and the tooth 6 of the toothed driven roller 30 meshes. When the rotation drive device 50 is driven to rotate the drive shaft 22, the drive roller 2 (including the toothed drive roller 20) is rotationally driven, and the teeth 6 of the toothed drive roller 20 are meshed with the wire mesh belt 4. The wire mesh belt 4 circulates while meshing with 41. As described above, when the wire mesh belt 4 travels, the toothed driven roller 30 rotates via the teeth 6 meshed with the mesh 41 of the wire mesh belt 4. As a result, the driven shaft 32 rotates and the driven roller 3 including the toothed driven roller 30 rotates, so that the wire mesh belt 4 circulates without causing a deviation.

  The food dough is placed on the carrier side belt 4a while the wire mesh belt 4 is running. That is, the food dough is placed on the carrier side belt 4 a from the vicinity of the driven roller 3 and is conveyed in the direction of the driving roller 2 from the vicinity of the driven roller 3. At this time, since the food dough is guided by the guide member 9 from the vicinity of both sides of the carrier side belt 4a to the center side thereof, the food dough can be conveyed without dropping from the carrier side belt 4a.

  Further, when the food dough is conveyed, since the lower surface of the carrier side belt 4a contacts the deflection preventing member 7 and the carrier side belt 4a travels without being bent, the wire mesh belt 4 can be used for conveying the food dough. .

  Therefore, the transport machine 1 for food production apparatus according to the present invention travels with the mesh 6 of the drive roller 2 directly meshed with the teeth 6 so that an endless chain is not required. Since the wire mesh belt 4 is not bent by the deflection preventing member 7, the food dough can be conveyed stably.

  Further, when the deflection preventing member 7 is provided along the traveling direction of the wire mesh belt 4, the food dough can be stably conveyed. That is, for example, when the deflection preventing member 7 is provided in the width direction of the wire mesh belt 4, the wire mesh belt 4 bends between the deflection preventing members 7. Therefore, when the food dough passes through the portion, the food dough may move in the width direction of the wire mesh belt 4, for example. In other words, to put it in an extreme, the carrier side belt 4a travels in a wavy manner, and the food dough may not be stably conveyed. On the other hand, when the deflection preventing member 7 is provided along the traveling direction of the wire mesh belt 4, the traveling carrier side belt 4a hardly travels in a wavy manner, so that the conveyance of the food dough is stabilized. Can be done. In particular, when the food dough is a rice cracker, if the food dough moves on the belt during conveyance in the drying process, baking process, and seasoning process, the food dough may be unevenly dried or baked. Don't worry. Therefore, the transport machine 1 for a food production apparatus according to the present invention is particularly useful as a transport machine for a food production apparatus for producing confectionery such as rice crackers.

  FIG. 9 shows another embodiment of the teeth provided on the roller. According to the drawing, the plurality of teeth 96 in the circumferential direction provided on the outer peripheral surface of the toothed roller 95 (including the toothed driving roller and the toothed driven roller) are not aligned in the axial direction of the toothed roller 95. They are shifted in the circumferential direction. If comprised in this way, since a load will not be applied to one bending wire of a metal-mesh belt, but it applies to a some bending wire, it can prevent that a metal-mesh belt deform | transforms as much as possible.

10 and 11 are views showing an example of a food production apparatus according to the present invention. As shown in FIGS. 10 and 11, this food manufacturing apparatus is a hot air drying apparatus 100 provided with a transport machine according to the present invention. The food production apparatus according to the present invention is not limited to the hot air drying apparatus 100.

The hot air drying apparatus 100 includes a hot air drying chamber 101 having a long box shape. The hot air drying chamber 101 is covered with a heat insulating material and has a length of, for example, 80 m to 200 m. Inside the hot air drying chamber 101, a large number of heaters 102 and a large number of hot air agitating fans 103 are installed over almost the entire length, and the endless wire mesh belts 104, 104 are also used by using most of the internal volume. ... are provided in multiple stages over the entire length. The wire mesh belt 104 of each stage is circulated around the drive roller 105 and the driven roller 106, respectively. Only the uppermost wire mesh belt 104 is led to the outside from an inlet formed at one end of the hot air drying chamber 101, and is hung on a driven roller 106 installed on the lower side of the conveying conveyor 107 of the die cutting device. The food dough is transported from the transport conveyor 107 onto the wire mesh belt 104.

  A release agent coating device 120 is provided in the vicinity of the driven roller 106 and below the return side belt 104 b of the wire mesh belt 104 that is stretched over the driven roller 106. The release agent application device 120 applies the release agent to the surface of the return side belt 104b on which the food dough is placed. The release agent application device 120 is not particularly limited as long as the release agent can be applied to the surface of the return side belt 104b.

  On the outer periphery of the drive roller 105 of each wire mesh belt 104 (although it is alternately arranged on the left and right), a next-stage transfer device 108 for sequentially transferring the food dough from the upper wire mesh belt 104 to the next wire mesh belt 104 is provided. It has been. The next-stage transfer device 108, for example, presses the transfer endless belt 109 made of campus cloth against the wire mesh belt 104, so that the food dough is sandwiched between the wire mesh belt 104 and the transfer endless belt 109 and the next-stage transfer device 108 starts from the upper wire mesh belt 104. It is configured to be transferred onto the staged wire mesh belt 104.

  In the vicinity of the other-stage transfer device 108 on the other end side of the hot air drying chamber 101, that is, on the side opposite to the inlet, a desorption device 110 for attaching / detaching the next-stage transfer device 108 is attached. The desorption device 110 is configured to move in the hot air drying chamber 101 in the vertical direction of the gravity to desorb the optional next-stage transfer device 108. A food dough take-out conveyor 111 for taking out the food dough out of the hot air drying chamber 101 is provided below the drive roller 105 to which the next-stage transfer device 108 on the side where the desorption device 110 is provided is attached. Thus, by providing the desorption device 110 and the food dough takeout conveyor 111, the food dough can be taken out from the arbitrary wire mesh belt 104 via the food dough takeout conveyor 111.

The wire mesh belt 104 is the same as the wire mesh belt 4 described above. The wire mesh belt 104 has a long length when used in the hot air drying apparatus 100, and has a length of, for example, 80 m to 200 m. That is, the wire mesh belt 104 is a belt having an endless endless mesh 41 as shown in FIG. The wire mesh belt 104 is not particularly limited, and examples thereof include those configured by combining a right-handed spiral member 43, a left-handed spiral member 44, and a bent wire member 45. The material of the spiral members 43 and 44 and the bent wire 45 is not particularly limited as long as it can withstand the manufacturing process of rice crackers, and examples thereof include stainless steel and zinc-drawn wire.

  The driving roller 105 and the driven roller 106 are the same as the driving roller and the driven roller described above. That is, as shown in FIG. 11, the drive roller 105 includes, for example, a total of seven drive rollers 20 with four teeth and three drive rollers 2 (drive rollers without teeth). Further, the driven roller 106 is composed of, for example, a total of five, that is, three toothed driven rollers 30 and two driven rollers 3 (drive rollers without teeth). The driving roller 105 and the driven roller 106 may be a single toothed roller having teeth as a whole.

  Below the carrier side belt 104a in the hot air drying chamber 101, for example, as shown in FIGS. 11 and 12, a deflection preventing member 170 made of a rod is provided to prevent the carrier side belt 104a from bending. ing. The deflection preventing member 170 is formed to extend in the width direction of the wire mesh belt 104, and both ends are attached to, for example, a machine frame 175 in the hot air drying chamber 101. The deflection preventing member 170 is made of a heat resistant material such as stainless steel. The shape is not particularly limited as long as the carrier side belt 104a can be prevented from being bent. For example, a trapezoidal shape as shown in FIG. 13 (a), a circular shape as shown in FIG. 13 (b), and a shape as shown in FIG. 13 (c). It is formed in a rod shape such as a rectangle. Although the space | interval of the deflection | deviation prevention member 170 will not be specifically limited if the deflection | deviation of the carrier side belt 104a can be prevented, Preferably it is 4-6 m.

  As shown in FIG. 11, the deflection preventing member 170 may be arranged in a direction (including a substantially inclined direction) orthogonal to the traveling direction of the carrier side belt 104a, but the orthogonal direction ( It is preferable to be inclined with respect to the orthogonal direction. It is preferable that the inclination is not the same in the inclination direction but every other inclination is the same. That is, it is preferable that the deflection preventing member 170 is disposed so as to be inclined to the side opposite to the adjacent deflection preventing member 170. The inclination angle of the deflection preventing member 170 is not particularly limited, but is preferably 5 ° to 15 ° with respect to the orthogonal direction, and more preferably 5 ° with respect to the orthogonal direction. When the inclination angle of the deflection preventing member 170 is less than 5 °, the effect of suppressing the belt deviation is small, and when the inclination angle of the deflection preventing member 170 exceeds 15 °, the deviation of the belt is suppressed. become unable.

  A guide roller 178 for guiding the return side belt 104b is provided below the return side belt 104b in the hot air drying chamber 101. The guide roller 178 is formed to extend in a direction (including a substantially orthogonal direction) orthogonal to the traveling direction of the return side belt 104b. The guide roller 178 is not particularly limited as long as it can guide the return side belt 104b. Further, the interval between the guide rollers 178 is not particularly limited, but is preferably an arbitrary interval at which the return side belt 104b can guide without bending.

As described above, even when the hot air drying apparatus 100 that is a food production apparatus according to the present invention is configured, it is possible to reduce the size and the cost significantly and to stably convey the food dough.

  That is, when the drive roller 105 is driven to rotate, the teeth 6 of the toothed drive roller 20 mesh with the mesh 41 of the metal mesh belt 104, and the metal mesh belt 104 circulates. As described above, when the food dough is placed on the carrier side belt 104 a while running the wire mesh belt 104, the food dough is dried by the heating heater 102 and the hot air stirring fan 103 while being conveyed in the hot air drying chamber 101. Is done. The wire mesh belt 104 disposed in the hot air drying chamber 101 or the like is provided with a deflection preventing member 170 below the carrier side belt 104a even when the length is increased from 80 m to 200 m, for example. The belt 104a can carry the food dough without bending.

  Further, when the length of the metal mesh belt 104 is increased from 80 m to 200 m, for example, the metal mesh belt 104 may be offset, but the offset can be suppressed. That is, the deflection preventing member 170 is inclined, for example, by 5 ° with respect to the orthogonal direction, and is disposed so that the inclination is inclined to the opposite side to the adjacent deflection preventing member 170. Therefore, the carrier side belt 104a. The deflection of the deflection preventing member 170 is suppressed.

Therefore, the hot air drying device 100 according to the present invention does not require an endless chain because the wire mesh belt 104 is directly meshed with the teeth 6 of the driving roller 105 and travels. Since the wire mesh belt 104 is not bent by the deflection preventing member 170 and is prevented from being displaced, the food dough can be conveyed stably.

  14 and 15 show a case where the transport machine according to the present invention is used in a rice cracker baking apparatus as another food manufacturing apparatus.

  According to the drawing, the endless wire mesh belt 180 is suspended between a driven roller 182 with teeth 182a as well as a driving roller 181 with teeth 181a, and the carrier side belt 180a passes through the baking pot 183. Yes. On the upper surface of the carrier side belt 180a, as shown in FIG. 15, a plurality of rice cracker doughs 180b.

  On the lower surface of the carrier side belt 180a, a deflection preventing bar 188 to which the machine frame 187 is attached is provided obliquely in a direction intersecting with the carrier side belt 180a.

  For example, the indication symbol 184 is a preheating gas hook, and the indication symbol 185 is a coloring hook, and the carrier side belt 180a of the wire mesh belt 180 passes through the inside. Reference symbols 186 a, 186 b, 186 c, 186 d, and 186 e are gas burners as heating means, and are connected to the baking pot 183. In addition, this heating means is an example, and can be heated and fired using electricity, charcoal fire, or the like.

  When configured in this manner, the rice cracker dough placed on the wire mesh belt 180 and passing through the baking pot 183 as shown in FIG. There is an effect that there is nothing.

  As can be understood from the above description, the deflection preventing member 7, the guide roller 81, the deflection preventing member 170, the guide roller 178, the deflection preventing member 188, and the like constitute deflection preventing means for the wire mesh belts 4, 104, and 180. ing.

As described above, since the hot air drying apparatus for food dough according to the present invention does not use a chain for the wire mesh belt, it can prevent the lubricating oil applied between the chain and the guide rail from being mixed into the food. Is. Furthermore, by using a wire mesh belt, the food dough placed in parallel on the upper surface is bent in the traveling direction or the width direction, and the yield may be deteriorated due to contact with each other or overlapping . This can be prevented by the deflection preventing means.

DESCRIPTION OF SYMBOLS 1 Conveying machine 2 Drive roller 3 Drive roller 4 Wire mesh belt 4a Carrier side belt 4b Return side belt 6 Teeth 7 Deflection prevention member 9 Guide member 13 Side plate 20 Toothed drive roller 30 Toothed follower roller 41 Mesh 100 Hot air drying device 101 Hot air drying Chamber 104 Wire mesh belt 104a Carrier side belt 104b Return side belt 105 Drive roller 106 Driven roller 170 Prevention member 180 Wire mesh belt 180b Rice cracker dough 183 Baking pot 186a-186e Burner 188 Deflection prevention member

Claims (2)

An endless wire mesh belt that runs between a driving roller and a driven roller and circulates in a heated atmosphere in a long box-shaped hot air drying chamber that reaches several tens of meters to several hundreds of tens of meters in a vertical direction. A hot-air drying apparatus for food dough, which is provided over a plurality of stages at intervals, and in which a plurality of food doughs are arranged and placed on each of the wire mesh belts and dried while being sequentially conveyed from the upper wire mesh belt to the lower wire mesh belt. Because
The wire mesh belt is composed of a right-handed spiral material and a left-handed spiral material that are alternately connected by a bent wire material. The wire mesh belt is stretched between a driving roller and a driven roller and driven independently for each stage. A plurality of teeth adjacent to each other in the axial direction are provided across the circumferential surfaces of the driving roller and the driven roller so as to mesh with the mesh of the stretched wire mesh belt and run the wire mesh belt. The side of the bent wire and the right-handed spiral material and / or the left-handed spiral material are located below the portion of the wire mesh belt that is located above the bent wire of the left-handed spiral material. It is configured to mesh with the portion wound around the bent wire, and the food dough is transferred from the upper wire mesh belt to the lower wire mesh belt using a transfer conveyor, and further, Each lower surface of the carrier belt and a return side belt mesh belt provided preventing means deflection to prevent deviation and deflection in contact with the carrier side belt and the return side belt, the deflection prevention means, the carrier side belt And a deflection preventing member composed of a plurality of bar members attached to the machine frame in an inclined state between the driving roller and the driven roller of the return side belt while being in an inclined state from the lower side and having different inclination directions. A hot air drying apparatus for food dough, comprising: a plurality of guide rollers attached to a machine frame at a predetermined interval in contact with the lower surface of the return side belt on the return side belt side .   2. The hot air drying device according to claim 1, further comprising a release agent application device that is located outside the hot air drying chamber and applies a release agent to the return side belt. Hot air drying equipment for food dough.

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