KR101463228B1 - Chaff burner and Grain drier with it - Google Patents

Abstract

The present invention relates to a rice hog combustion apparatus using rice husk as a fuel, in which a combustion chamber to which rice husk is supplied through a hopper is provided in a main body, and the rice husk is supplied to the combustion chamber through a dispersion cylinder attached to an end of a supply pipe provided with a feed screw conveyor And the intake mechanism formed on the outside of the dispersion cylinder receives the air of the blower through the air supply pipes arranged in the supply pipe in a double manner to form a vortex in the combustion chamber, Air is sprayed through the holes of the perforated plate defining the bottom of the combustion chamber, and as the pivoting arm rotates above the perforated plate, the chaff which is piled up in the vortex is further agitated and mixed with the air to be completely burned, The ash is moved to the outer periphery of the perforated plate and is accumulated in the re-deposition groove, And is particularly suitable as an alternative means for a gas or oil-based burner to an ordinary grain dryer.

Description

[0001] The present invention relates to a chaff burner and a grain dryer using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice hog combustion apparatus, and more particularly, to a rice hog combustion apparatus capable of completely burning rice hulls derived from rice hull threshing by a heat source, and a grain dryer using the same.

Rice harvested from rice farming is relatively high in moisture content of 20 ~ 30%, so it causes problems such as deterioration and decay in long-term storage, so it should be dried and stored at about 15% level.

Drying of rice has been naturally dried with sunlight. However, this method is not suitable for mass drying due to low drying efficiency, and usually rice is dried through a grain dryer.

A typical example of a grain dryer is one in which air sucked into a drying chamber is heated by a burner while grains such as rice fall down from the upper side of the dryer to a lower side and circulate along a passage passing through the drying chamber, Circulating grain dryer is known.

The following Patent Document 1 shows a constitution relating to a circulating type grain dryer in which the grain is fed by a screw conveyor or the like and conveyed upward through an elevating passage and then sprayed into the drying chamber to be dried while falling naturally, The grain is again conveyed to the screw conveyor and conveyed upward, and then dried by repeating several times.

In such a circulating grain dryer, an oil burner is employed as a combustion device for raising the air temperature of the drying chamber.

In the combustion apparatus disclosed in the following Patent Document 2, when the transfer screw feeds the rice husk supplied through the fuel inlet from the upper side of the combustion chamber communicating with the drying chamber and supplies it to the inside of the combustion chamber, the fuel distribution pipe provided in the combustion chamber slowly In this state, the flame of the petroleum burner on the floor ignites the rice husk, and when the self-combustion is started, the petroleum burner is automatically extinguished, and the air heated by the combustion Is discharged to the outside through a hot air passage passing through the drying chamber, and the ash remaining after burning the rice husk is deposited as a discharge pipe and removed by the action of the discharge screw.

In the grain dryer disclosed in the following Patent Document 3, a gas or oil burner is provided on the lower side of the drying chamber, and a recycling burner for burning recycled fuel such as rice husk, wood chip and cocoa shell supplied through a recycling tank is provided in parallel, It shows a configuration in which recycled fuel can be used together with the use of gas or oil as the fuel for the dryer.

Korean Patent No. 10-0705710, Figure 6 Korean Patent No. 10-0805250, Figs. 2, 3 Korean Patent No. 10-1097876, Fig. 1

If the combustion device of the grain dryer is operated by gas or oil, the operation cost is high and the economical efficiency is low. However, if the husk that remains after threshing is used as fuel, it can be supplied stably, operation cost is low, and combustion efficiency is high.

The apparatus of Patent Document 2 utilizing rice hulls as a fuel has a structure in which outside air is fed to the bottom of a combustion chamber to assist combustion of the hull and the supplied hull is mixed with the air sufficiently by rotation of the fuel distribution plate, Since the fuel distribution plate is rotated in the up and down direction, the structure disperses the rice husk, and since the discharge part for removing the ash is separated from the combustion chamber through the wall, the ashes remaining after the combustion are completely removed from the combustion chamber So that the circulation of the rice hulls is not smooth.

In addition, the grain dryer disclosed in Patent Document 3 has a recycling burner for burning recycled fuel that is pressure-fed on the airflow of the blowing fan, and thus can be utilized as an auxiliary device of heating means using gas or oil as fuel .

The present invention relates to a method for drying a grain by using rice husk as a fuel in such a manner that the means for dispersing rice husk and mixing with air are horizontally rotated in the combustion chamber so as not to hinder the combustion of the husk, The present invention has been made to solve the above problems, and it is an object of the present invention to provide a rice hood combustion apparatus and a grain dryer using the same.

To achieve the above object, the rice husk burning apparatus of the present invention comprises: a combustion chamber provided in a main body and having a hopper for supplying rice husk to one side of the furnace; A feed pipe for guiding the rice husk carried on the feed screw conveyor in the hopper to the center of the combustion chamber; A dispersion cylinder integrally attached to an end of the supply pipe and having a plurality of intake mechanisms formed on an outer periphery thereof; A supply pipe arranged in the form of a double pipe in the supply pipe and supplying air of the blower to the dispersion pipe; A perforated plate disposed below the dispersion cylinder to define a bottom of the combustion chamber and to have infinite holes arranged on its surface to supply air of the blower to the combustion chamber; A re-deposition groove formed on an outer periphery of the perforated plate; An axis disposed through the center of the perforated plate; A pivoting arm attached in the direction of the axis of the shaft and rotatably driven above the perforated plate to agitate and disperse the rice husk supplied into the combustion chamber; A scraper integrally formed at an end of the pivot arm and pushing and removing the material while turning on the re-accumulation groove; And a discharge screw conveyor for forcibly discharging the material removed by the scraper to the outside from the lower side of the redeposited groove.

The pivoting arm may include a scraper and may be arranged to be rotatable about an axis.

The feed screw conveyor and the feed screw conveyor are connected to a motor via a chain and a sprocket or a power transmission means composed of a timing belt and a timing pulley and the shaft of the perforated plate is interposed between the lower end thereof and the shaft of the discharge screw conveyor So that the motor can be synchronously driven by the bevel gear group interposed therebetween.

In addition, a fixing rail is arranged on the upper surface of the perforated plate in a radial direction so as to protrude to the outside, and a rotary rail corresponding to the fixed rail is radially arranged on the outer periphery of the shaft, It can be scattered around.

The present invention provides a grain dryer in which the bottom of the dryer is formed of an inclined slope so that the grain falling from above the dryer can be led to the bucket conveyor .

The rice husk burning apparatus and the grain dryer using the same according to the present invention have the following effects.

The rice husk burning apparatus according to claim 1, wherein the rotating arm rotates horizontally above the perforated plate of the combustion chamber, and the air required for combustion of the ozone is injected through the bottom of the perforated plate and the dispersion plate at the center of the combustion chamber, And the combustion residues of the rice husk are completely discharged and removed by a scraper integrally formed with the rotary car and a discharge screw conveyor disposed on the outer circumferential lower side of the perforated plate, And it is possible to achieve the effect of high heat quantity.

In the rice hue combustion apparatus of the second aspect of the present invention, the four scrapers are turned on the outer periphery of the perforated plate, so that the removal of the material that burns and remains in the hue rises smoothly and quickly, thereby further promoting the combustion of chaff in the combustion chamber do.

The rice husk burning apparatus according to claim 3 is characterized by comprising a feed screw screw conveyor required for smooth feeding of rice hulls, a discharge screw conveyor required for forcibly discharging remaining raw materials, and a rotary screw rotator for rotating the rotary arm and the scraper rotating above and around the perforated plate By driving the motor with a single motor, it simplifies the necessary components and simplifies assembly and saves cost by saving parts.

The rice husk burning apparatus according to claim 4 is characterized in that the material piled up at the center portion of the perforated plate is scattered around by the rotating operation of the rotating rail disposed around the axis, so that the external discharge of the ash generated by the combustion of the rice husk inside the combustion chamber And provides an effect of always being kept good.

Since the grain dryer of the fifth aspect of the invention is formed as a slope slope at the bottom to naturally guide the dropped grain to the bucket conveyor, it is possible to omit a screw conveyor or the like requiring power, thereby reducing cost by cost saving, Provide a mitigation effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a schematic structure of a rice cracking combustion apparatus according to the present invention. FIG.
FIG. 2 is an enlarged perspective view illustrating the main part of FIG. 1; FIG.
FIG. 3 is an enlarged perspective view illustrating another main part of FIG. 1; FIG.
4 is a side view schematically showing a process of removing the ash accumulated on the bottom of the combustion chamber in the rice husk burning apparatus of the present invention.
5 is a schematic view showing a grain dryer employing a rice burning apparatus according to the present invention.
6 is a side view of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, a heat exchanger 102 in which a plurality of flues 101 are arranged in parallel is disposed above the inner side of the main body 100, and a combustion chamber And a hopper 104 for supplying rice husk as fuel is disposed outside the combustion chamber 103. [

The hopper 104 again communicates with a supply pipe 106 having a feed screw conveyor 105 disposed on the inlet side thereof and the outlet side of the supply pipe 106 is opened in a curved shape extending downward from the center of the combustion chamber 103 . A feed tube 106 is disposed concentrically on the outer circumference of the feed tube 106 in the form of a double tube and the end of the feed tube 106 is connected to a dispersing cylinder 108 positioned at the center of the combustion chamber 103 and fed by the blower 109 So that the air is led to the combustion chamber 103.

On the other hand, a plurality of catching mechanisms (blowing grooves) 110 formed in one direction are protrudingly arranged on the outer circumference of the dispersion cylinder 108. The intake mechanism 110 functions to blow air sent to the air supply tube 107 as indicated by arrows in FIG. 2 to form a vortex around the dispersion cylinder 108.

Accordingly, the rice husk falling and supplied to the lower side of the dispersion cylinder 108 through the supply pipe 106 is floated while being dispersed into the combustion chamber 103 while swirling.

The bottom of the combustion chamber 103 described above is formed of a perforated plate 111 having numerous perforations. The lower side of the perforated plate 111 communicates with the blower 109 and receives a part of the air to be pressure-fed In addition, since the rotating arm 113 is disposed on the upper surface of the perforated plate 111 with the axis 112 as the center, the chaff and the material deposited thereon are continuously mixed and transmitted through the perforated plate 111 The combustion air is supplied to the combustion chamber 103 and is re-floated while being re-combusted.

In this embodiment, the pivoting arms 113 are depicted as one bar extending in a symmetrical direction, but they may also be arranged in a structure in which two or more of them intersect with each other.

The end portion of the pivot arm 113 extends outward from the perforated plate 111 and is integrally connected to the scraper 114 disposed at a lower position.

3 shows a combination state of the perforated plate 111, the axis 112 at the center thereof, and the pivotal arm 113 with each other. In the drawing, a re-deposition groove 115 is formed on the outer periphery of the perforated plate 111 in a low groove shape. The scraper 114 circulates through the re-deposition groove 115 to rotate the accumulated material, It is pushed into a passage and discharged.

On the upper surface of the perforated plate 111 in which a large number of holes are arranged, fixed rails 116 are equally distributed in the radial direction and protrude upward. In correspondence with these fixed rails 116, And the rail 117 is integrally provided with the shaft 112 to rotate.

The stationary rail 116 serves to increase the frictional force so that the ash accumulated on the perforated plate 111 does not slip on the plate surface and the rotating operation of the rotary rail 117 causes the ash falling around the center of the perforated plate 111 to be scattered Thereby discharging it in the outer circumferential direction.

1, the discharge screw conveyor 118 is disposed on one side of the bottom surface of the re-deposition groove 115 to automatically remove the collected material from the outside, and the axis of the discharge screw conveyor 118 and the above- The shafts of the feed screw conveyor 105 are all powered by a single power source by being power-connected to the motor 120 via a chain and a sprocket, or a power transmission means 119 comprising a timing belt and a timing pulley.

The shaft 112 of the combustion chamber 103 extends through the center of the perforated plate 111 at its lower end and is guided by the bevel gear group 121 interposed between the shafts of the discharge screw conveyor 118, And receives the power of the motor 120.

Such a power transmission structure provides an advantage of being able to drive the entire moving part requiring power as a single power source.

1, the rice husk that is fed into the hopper 104 is fed to the combustion chamber 103 via the feed pipe 106 by a feed screw conveyor 105, And at the same time a part of the air blown by the blower 109 is blown through the air intake mechanism 110 of the upper and outer peripheral surfaces of the dispersion cylinder 108 via the air intake port 107, The irregular vortex is generated inside the combustion chamber 103 to mix the harsh air and air properly. On the upper surface of the perforated plate 111, the rotation arm 113 is rotated As you work, you will churn the chaff that is being fed.

When the rice hull is ignited by a conventional ignition device (not shown) using kerosene in such a state, combustion is started vigorously.

The combustion of the rice husk by the ignition device starts from the upper side of the rotation arm 113, but since the lower side of the rotation arm 113 whips the rice husk, the burned rice and the unburned rice husk are mixed with each other and burned. The complete combustion can be achieved without leaving the chaff in the combustion state.

The smoke generated by the combustion of the rice husk is discharged on the flue 101 and accumulated on the upper surface of the perforated plate 111. The continuous rotation operation of the rotary arm 113 and the rotary rail 117 Most of the ash is not accumulated in the perforated plate 111 but is pushed by the pivoting arm 113 to be discharged and discharged in the outer peripheral direction by the air flow supplied to the lower side of the perforated plate 111, And is discharged and scattered around by the rotation of the rail 117. Since the discharge of such ash is performed along the moving path provided by the fixed rail 116, it is smoothly transported and discharged without stagnation.

The material to be conveyed in the outer peripheral direction of the perforated plate 111 falls into the re-deposition groove 115 by the discharge action of the above-described material, and is pushed by the scraper 114 rotating synchronously with the pivotal arm 113, Is guided to the entrance of the screw conveyor 118 and then discharged to the outside.

The rice husk burning apparatus of the present invention repeats the above operation to completely burn rice hulls, and the heat generated in this process is utilized for drying rice and the like in a conventional grain dryer.

Fig. 5 is a schematic view showing an example in which the rice husk burning apparatus according to the present invention is applied to a conventional grain dryer. Fig.

The rice hog combustion apparatus of the present invention is installed at a predetermined height from the bottom of the dryer 200 as in the conventional kerosene or gas combustion apparatus.

The rice grains and the like are conveyed on the bucket conveyor 201 disposed on the side of the dryer 200 to be dropped from above and dried under the action of heat generated from the main body 100 of the rice flour burning apparatus during this process , And the grain dropped to the lower side rises again on the bucket conveyor 201 until it is dried to an appropriate level, and the process of dropping again is repeated.

In the conventional grain dryer for conveying the grain dropped to the lower side of the dryer 200, a separate screw conveyor for conveying the grain to the bucket conveyor 201 is provided. However, in the grain dryer in which the present invention is applied, The lower part of the bottom of the dryer 200 is formed as a slope slope 202 extending to the bucket conveyor 201 so that the grains are slid and conveyed to the bucket conveyor 201. [

With such a configuration, the dryer 200 does not need to have a screw conveyor for conveying the grain from the inner bottom, so that it is possible to reduce the manufacturing cost and operation cost of the apparatus according to omission of the component.

100: Body 101: Year
102: heat exchanger 103: combustion chamber
104: Hopper 105: Feed screw conveyor
106: supply pipe 107:
108: Dispenser 109: Blower
110: picker 111: perforated plate
112: shaft 113: pivot arm
114: scraper 115: re-deposition groove
116: fixed rail 117: rotating rail
118: Discharge screw conveyor 119: Power transmission means
120: motor 121: bevel gear group
200: dryer 201: bucket conveyor
202: slope slope

Claims (5)

A combustion chamber provided in the main body and having a hopper for supplying rice bran to an outer side thereof;
A feed pipe for guiding the rice husk carried on the feed screw conveyor in the hopper to the center of the combustion chamber;
A dispersion cylinder integrally attached to an end of the supply pipe and having a plurality of intake mechanisms formed on an outer periphery thereof;
A supply pipe arranged in the form of a double pipe in the supply pipe and supplying air of the blower to the dispersion pipe;
A perforated plate disposed below the dispersion cylinder to define a bottom of the combustion chamber and to have infinite holes arranged on its surface to supply air of the blower to the combustion chamber;
A re-deposition groove formed on an outer periphery of the perforated plate;
An axis disposed through the center of the perforated plate;
A pivoting arm attached in the direction of the axis of the shaft and rotatably driven above the perforated plate to agitate and disperse the rice husk supplied into the combustion chamber;
A scraper integrally formed at an end of the pivot arm and pushing and removing the material while turning on the re-accumulation groove; And
And a discharge screw conveyor for forcibly discharging the material removed by the scraper to the outside from the lower side of the redeposited grooves. The method according to claim 1,
Characterized in that the swing arms formed at the end of the scraper are arranged crosswise about an axis. The method according to claim 1,
The feed screw conveyor and the feed screw conveyor are power-connected to a motor via a chain and a sprocket, or a power transmission means composed of a timing belt and a timing pulley, and the shaft of the perforated plate is interposed between the lower end thereof and the shaft of the discharge screw conveyor And is synchronously driven by the motor by being connected by a bevel gear group. The method according to claim 1 or 3,
And a rotating rail corresponding to the fixed rail is rotatably disposed on the outer circumference of the shaft so as to be rotatable in a radial direction, so that the material accumulated on the upper surface of the perforated plate So as to be able to be removed by being scattered around. And a dryer having a rice han- dling unit according to claim 4, wherein the bottom of the dryer is formed as an inclined slope so that grains falling from the upper part of the dryer can be guided to the bucket conveyor Grain dryer.

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