A rice processing hulling device

Abstract

The application discloses a husking device for rice processing, which comprises a hopper, a separation chamber and a husking chamber. The husking chamber is provided with an extrusion roller. The bottom of the separation chamber is arc-shaped, with the second end being lower than the first end. The upper part of the separation chamber is connected with the hopper through a first conveyor. The second end of the separation chamber is communicated with the husking chamber through a second conveyor. The bottom of the separation chamber is provided with a gas jet port for upward gas jet. The gas jet port is communicated with a gas pump through a pipeline. The upper part of the gas jet port is provided with a spiral conveying strip with a cylindrical cavity in the middle. The spiral conveying strip is provided with a plurality of spiral through holes capable of passing through rice. The spacing of the spiral through holes is less than 2 mm. The spiral conveying strip rotates under the drive of a driving device. The spiral conveying strip drives the rice to move upward and pushes the rice to move towards the first end. The first end of the bottom of the separation chamber is provided with a residue discharge port. The top of the separation chamber is provided with an exhaust port. The husking device can efficiently and economically separate stone particles, which is of great significance for improving the overall efficiency and economic benefits of rice processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rice processing, in particular to a husking device for rice processing. BACKGROUND

[0002] In the current field of agricultural processing, the processing flow of rice usually involves harvesting, drying and subsequent husking steps. However, in this series of processes, some stone particles are inevitably mixed in the rice. These stone particles become a significant challenge in the subsequent husking process. Because the hardness of stone particles is much higher than that of rice, they will cause serious wear and tear to the extrusion rollers in the husking equipment. More seriously, the performance of the worn extrusion rollers will decline when they continue to work, which may result in some rice not being fully husked, thereby affecting the quality and yield of the final product.

[0003] Therefore, it is particularly important to remove stone particles from the rice before it officially enters the husking stage. However, the method widely used at present mainly relies on air blowing, which uses the difference in density between rice and stone particles to achieve separation. Although this method is effective to some extent, its limitations become apparent when a large amount of rice needs to be processed. In order to meet the separation needs of a large amount of rice, a large amount of air flow must be provided, which not only increases energy consumption but also reduces overall economic efficiency. SUMMARY

[0004] In view of the above prior art, the present application provides a husking device for rice processing, which can efficiently and economically separate stone particles and is of great significance to improving the overall efficiency and economic efficiency of rice processing.

[0005] To achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is as follows:

[0006] A husking device for rice processing, comprising a hopper, a separation chamber and a husking chamber, wherein the husking chamber is provided with an extrusion roller for husking rice, the bottom of the separation chamber is in a circular arc shape with the second end lower than the first end, the upper middle part of the separation chamber is connected with the hopper through a first conveyor, the second end of the separation chamber is communicated with the husking chamber through a second conveyor, the bottom of the separation chamber is provided with a gas injection port for upward gas injection, the gas injection port is communicated with a gas pump through a pipeline, the gas injection port is provided with a spiral conveying strip with a cylindrical cavity in the middle part, the spiral conveying strip is provided with a plurality of spiral through holes capable of passing through rice, the distance between the spiral through holes is less than 2mm, the spiral conveying strip rotates under the drive of a driving device, the spiral conveying strip drives the rice to move upward and at the same time pushes the rice to move towards the first end, the first end of the bottom of the separation chamber is provided with a slag discharge port, and the top of the separation chamber is provided with an exhaust port.

[0007] Further, the bottom of the separation chamber is provided with a groove, and an arc-shaped grid is arranged in the groove, the upper surface of the grid coincides with the bottom arc surface of the separation chamber, and the air injection port communicates with the groove.

[0008] Further, the residue discharge port is connected with a storage tube, and the bottom of the storage tube is provided with a cover.

[0009] Further, the driving device is a motor, and the spiral conveying strip is provided with a connecting rod connected with the output shaft of the motor.

[0010] Further, the exhaust port communicates with a sediment tank, the shelling chamber is provided with a supply air pipe, the sediment tank communicates with the air inlet end of the supply air pipe, the air outlet end of the supply air pipe faces the lower side of the extrusion roller, the opposite side of the supply air pipe is provided with a second exhaust port, the second exhaust port is connected with a filter, the air outlet end of the supply air pipe is provided with a fan, and the side surface of the supply air pipe is provided with a bypass air port.

[0011] Further, a plurality of conical covers are arranged in the supply air pipe at the bypass air port, one end of the conical cover with a large diameter is connected with the inner wall of the supply air pipe, the other end of the conical cover with a small diameter is provided with a through hole, and the other end of the conical cover with a small diameter faces the direction of gas flow.

[0012] Further, the filter comprises an adsorption tank, a recovery tank and a plurality of partitions arranged in the recovery tank, the first end of the recovery tank communicates with the second exhaust port, the second end of the recovery tank communicates with the adsorption tank, the adsorption tank is used for adsorbing dust in the gas flow, and the partitions are arranged at intervals along the direction of the gas flow.

[0013] Further, the adsorption tank comprises a tank body, filter cloth, a water pump and a water pipe, the bottom of the tank body is provided with the water pump, the water pump is connected to the top of the tank body through the water pipe, a plurality of layers of filter cloth are arranged in the tank body, the filter cloth is provided with a plurality of air permeable holes, the filter cloth is sealingly connected with the tank body around, the filter cloth is inclined to the horizontal plane, and the inclination directions of adjacent filter cloths are opposite.

[0014] Further, the water pipe is provided with a strip-shaped water outlet hole, the water outlet hole is in contact with the upper end surface of the uppermost layer of filter cloth, and the upper end of the filter cloth is in contact with the lower end of the upper layer of filter cloth.

[0015] The beneficial effects of the present application are that: after the stone particles are removed in the separation chamber, the rice is conveyed to the shelling chamber by the second conveyor, and the two extrusion rollers in the shelling chamber remove the hulls of the rice, thereby completing the shelling operation of the rice. When the extrusion rollers are shelling, the stone particles mixed in the rice have been removed, thereby effectively protecting the extrusion rollers from being worn by stone particles, improving the service life of the extrusion rollers, maintaining the surface of the extrusion rollers flat, and reducing the proportion of shelling omissions. In the process of separating stone particles, a small amount of air is used to separate the stone particles in the rice, thereby improving the separation efficiency. When separating, the air can also separate light impurities in the rice. The pitch of the spiral through hole is less than 2mm, so that the width of the pushing surface that pushes the rice to move is less than 2mm, and the rice that is driven upward can more easily pass through the spiral conveying strip, reducing the possibility of the rice being conveyed to the residue discharge port. The present application can efficiently and economically separate stone particles, which is of great significance to improving the overall efficiency and economic benefit of rice processing. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure diagram of a shelling device for rice processing in the embodiments of the present application.

[0017] Figure 2 It is a structure diagram of a shelling device for rice processing in the embodiments of the present application. Figure 1 It is an enlarged view of area A in the above figure.

[0018] BRIEF DESCRIPTION OF DRAWINGS:

[0019] 1, hopper; 2, separation chamber; 3, shelling chamber; 4, extrusion roller; 5, first conveyor; 6, second conveyor; 7, air jet; 8, air pump; 9, spiral conveying strip; 10, spiral through hole; 11, residue discharge port; 12, exhaust port; 13, groove; 14, grid; 15, storage tube; 16, cover; 17, motor; 18, connecting rod; 20, air supply pipe; 21, second exhaust port; 22, filter; 23, fan; 24, bypass air port; 25, conical cover; 26, through hole; 27, adsorption box; 28, recovery box; 29, partition; 30, box; 31, filter cloth; 32, water pump; 33, water pipe; 34, water outlet. DETAILED DESCRIPTION

[0020] The technical solutions of the present application are further described in detail below in combination with the drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meanings as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0021] It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It is also possible in the prior art - both internally and externally - to use other means to perform the same function that is essentially the same. Therefore, all such modifications and equivalent arrangements are intended to be included within the scope of the appended claims.

[0022] Reference will now be made to the drawings wherein Figures 1-2 ​The application provides a shelling device for rice processing, which comprises a hopper 1, a separation chamber 2 and a shelling chamber 3, an extrusion roller 4 for shelling rice is arranged in the shelling chamber 3, the bottom of the separation chamber 2 is in a circular arc structure with the second end being lower than the first end, the upper middle part of the separation chamber 2 is connected with the hopper 1 through a first conveyor 5, the second end of the separation chamber 2 is communicated with the shelling chamber 3 through a second conveyor 6, a gas jet port 7 for upwardly jetting air is arranged at the bottom of the separation chamber 2, the gas jet port 7 is communicated with an air pump 8 through a pipeline, a spiral conveying strip 9 with a cylindrical cavity in the middle part is arranged above the gas jet port 7, the spiral conveying strip 9 is provided with a plurality of spiral through holes 10 capable of passing through rice, the distance between the spiral through holes 10 is less than 2 mm, the spiral conveying strip 9 rotates under the driving of a driving device, the spiral conveying strip 9 drives the rice to move upwardly and simultaneously pushes the rice to move towards the first end, a residue discharge port 11 is arranged at the first end of the bottom of the separation chamber 2, and an air discharge port 12 is arranged at the top of the separation chamber 2. When the shelling of rice is performed, the rice to be shelled is put into the hopper 1, and the rice in the hopper 1 is conveyed into the separation chamber 2 through the first conveyor 5. The upper middle part of the separation chamber 2 is connected with the hopper 1 through the first conveyor 5, the rice falls in the middle part of the separation chamber 2, the spiral conveying strip 9 with a cylindrical cavity in the middle part is arranged at the bottom of the separation chamber 2, the spiral conveying strip 9 rotates under the driving of a driving device, the spiral conveying strip 9 drives the rice to move upwardly and simultaneously pushes the rice and stone particles to move towards the first end, the spiral conveying strip 9 is provided with a plurality of spiral through holes 10 capable of passing through rice, the rice passes through the spiral through holes 10 in the moving process, the rice is puffed under the driving of the spiral conveying strip 9, and the rice and stone particles fall in the puffed gap, since the gas jet port 7 for upwardly jetting air is arranged at the bottom of the separation chamber 2, the gas jet port 7 is communicated with the air pump 8 through a pipeline, the gas generated when the air pump 8 works moves upwardly, the specific gravity of the stone particles is greater than that of the rice, the falling speed of the rice is less than that of the stone particles, and finally the stone particles deposit at the bottom of the separation chamber 2. With the pushing of the spiral conveying strip 9, the stone particles at the bottom are always pushed by the spiral conveying strip 9 to the first end of the separation chamber 2, the stone particles are more easily pushed by the spiral conveying strip 9, and finally the stone particles fall into the residue discharge port 11, and the air in the separation chamber 2 is finally discharged from the air discharge port 12. After the stone particles are separated in the separation chamber 2, the rice is conveyed into the shelling chamber 3 through the second conveyor 6, the outer shell of the rice is removed by the two extrusion rollers 4 in the shelling chamber 3, and thus the shelling of the rice is completed. When the shelling is performed by the extrusion rollers 4, since the stone particles mixed in the rice have been removed, the extrusion rollers 4 are effectively protected, the service life of the extrusion rollers 4 is prolonged, the surface of the extrusion rollers 4 is kept flat, and the shelling omission rate is reduced. In the process of separating the stone particles, a small amount of air can be used to separate the stone particles in the rice, and the separation efficiency is improved.When the rice is separated, the air can also separate the light impurities in the rice. The pitch of the spiral through hole 10 is less than 2mm, so that the width of the pushing surface that pushes the rice is less than 2mm, and the rice that is carried upward can more easily pass through the spiral conveying strip 9, reducing the possibility of the rice being conveyed to the residue discharge port 11. The present application can efficiently and economically separate stones and particles, and is of great significance for improving the overall efficiency and economic benefits of rice processing.

[0023] Specifically, the bottom of the separation chamber 2 is provided with a groove 13, and the groove 13 is provided with an arc-shaped grid 14. The direction of the groove 13 of the grid 14 is parallel to the axial direction of the arc surface, and the grid 14 can prevent the rice and coarse stone particles from falling into the air jet port 7. The upper surface of the grid 14 coincides with the bottom arc surface of the separation chamber 2, and the air jet port 7 communicates with the groove 13. The gas discharged from the air jet port 7 enters the groove 13, and then is discharged from the grid 14. The grid 14 also plays a role in equalizing the gas, so that the gas can be blown upward more uniformly. The upper surface of the grid 14 coincides with the bottom arc surface of the separation chamber 2, ensuring that the spiral conveying strip 9 can rotate smoothly and stably push the stones particles settled at the bottom to move towards the first end.

[0024] Specifically, the residue discharge port 11 is connected with a storage tube 15, and the bottom of the storage tube 15 is provided with a cover 16. The discharged stone particles fall into the storage tube 15, and the cover 16 is opened regularly to take out the stone particles in the storage tube 15.

[0025] Specifically, the driving device is a motor 17, and the spiral conveying strip 9 is provided with a connecting rod 18 connected with the output shaft of the motor 17. When the motor 17 rotates, the connecting rod 18 drives the spiral conveying strip 9 to rotate.

[0026] Specifically, the air outlet 12 communicates with the air inlet end of the air supply pipe 20, the air outlet end of the air supply pipe 20 is opposite to the lower side of the extrusion roller 4, the opposite side of the air supply pipe 20 is provided with a second air outlet 21, the second air outlet 21 is connected with a filter 22, the air outlet end of the air supply pipe 20 is provided with a fan 23, and the side surface of the air supply pipe 20 is provided with a bypass air port 24. The air discharged from the air outlet 12 is conveyed to the lower side of the extrusion roller 4 through the air supply pipe 20, the shelled rice falls downward, and the dragged rice husk is discharged from the second air outlet 21 under the action of the wind and enters the filter 22 for filtering and separation. The air outlet end of the air supply pipe 20 is provided with a fan 23, which accelerates the flow of gas under the action of the fan 23, and promotes the separation of the rice and the shell. The bypass air port 24 is arranged on the side surface of the air supply pipe 20, and when the air moves in the air supply pipe 20, the air speed is high and the pressure is low, so that the air outside the air supply pipe 20 is sucked into the air supply pipe 20, thereby increasing the amount of air and promoting the separation of the rice and the rice husk.

[0027] Specifically, the air supply pipe 20 at the bypass air outlet 24 is provided with a plurality of conical covers 25, one end of the conical cover 25 connected with the inner wall of the air supply pipe 20 is large in diameter, the other end of the conical cover 25 is provided with a through hole 26, and the other end of the conical cover 25 is small in diameter and faces the direction of the gas flow. The air in the air supply pipe 20 is prevented from flowing out from the bypass air outlet 24, and the external air is promoted to enter the air supply pipe 20 stably.

[0028] Specifically, the filter 22 comprises an adsorption box 27, a recovery box 28 and a plurality of partitions 29 arranged in the recovery box 28, the first end of the recovery box 28 is communicated with the second exhaust port 21, the second end of the recovery box 28 is communicated with the adsorption box 27, the adsorption box 27 is used for adsorbing dust in the gas flow, and the partitions 29 are arranged along the direction of the gas flow. The rice hulls from the second exhaust port 21 enter the recovery box 28, the heavy ones are at the first end of the recovery box 28 close to the second exhaust port 21, the light ones are at the second end of the recovery box 28 away from the exhaust port 12, and the lightest ones enter the adsorption box 27 along the gas flow and are finally adsorbed in the adsorption box 27.

[0029] Specifically, the adsorption box 27 comprises a box body 30, filter cloth 31, a water pump 32 and a water pipe 33, the bottom of the box body 30 is provided with the water pump 32, the water pump 32 is communicated to the top of the box body 30 through the water pipe 33, under the action of the water pump 32, the water in the box body 30 is pumped to the top through the water pipe 33, the box body 30 is provided with a plurality of layers of filter cloth 31, the water flowing from the water pipe 33 flows along the filter cloth 31, the filter cloth 31 is provided with a plurality of air permeable holes, and the gas flowing upwards needs to pass through the air permeable holes, so that the impurities in the gas are filtered and adsorbed, thereby playing a purifying role. The filter cloth 31 is sealingly connected with the box body 30 around, which can prevent the water flow from flowing out from the edge of the filter cloth 31, the filter cloth 31 is inclined to the horizontal plane, and the adjacent filter cloth 31 is opposite in the direction of inclination, the water flow flows step by step downward along the filter cloth 31, and the inclination can increase the area of the filter cloth 31, slow down the water flow and improve the filtering effect. The filter cloth 31 is connected end to end, so that the water flows of different filter cloths 31 are the same, and the gas at different positions can have good filtering effect.

[0030] Specifically, the water pipe 33 is provided with a strip-shaped water outlet hole 34, the water outlet hole 34 is in contact with the upper end surface of the uppermost layer of filter cloth 31, and the upper end of the filter cloth 31 is in contact with the lower end of the upper layer of filter cloth 31. The water discharged from the water pipe 33 flows uniformly on the filter cloth 31, and the filter cloth 31 filters the particles in the air uniformly.

[0031] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rice dehulling device, characterized in that, The utility model provides a rice shelling machine, including hopper, separation chamber and shelling chamber, the extruding roller for rice shelling is equipped in the shelling chamber, the bottom of separation chamber is the circular arc structure of second end is lower than first end, the upper middle of separation chamber is connected with hopper through first conveyer, the second end of separation chamber is communicated with shelling chamber through second conveyer, the bottom of separation chamber is equipped with the air jet of upward jet, the air jet is communicated with air pump through pipeline, the gas generated when air pump works moves upward, the speed of rice back falling is less than the speed of stone particle back falling, and the stone particle deposits in the bottom of separation chamber, the spiral conveying strip of the upper portion of air jet is equipped with the cylindrical cavity, the spiral conveying strip is equipped with a plurality of spiral through -hole that can pass through rice, the interval of spiral through -hole is less than 2mm, the spiral conveying strip rotates under the drive of drive arrangement, the spiral conveying strip drives rice to move upward and pushes rice and stone particle to move to first end at the same time, and rice passes through spiral through -hole in the process of moving, the first end of the bottom of separation chamber is equipped with the slag discharge port, and the top of separation chamber is equipped with the exhaust port.

2. The hulling apparatus for processing rice according to claim 1, wherein The bottom of the separation chamber is provided with a groove, and the groove is provided with an arc-shaped grid, the upper surface of the grid is coincident with the bottom arc surface of the separation chamber, and the air jet is communicated with the groove.

3. The hulling apparatus for processing rice according to claim 1, wherein The slag discharge port is connected with a storage tube, and the bottom of the storage tube is provided with a cover.

4. The hulling apparatus for processing rice according to claim 1, wherein The drive device is a motor, the spiral conveying strip is provided with a connecting rod, and the connecting rod is connected with the output shaft of the motor.

5. The hulling apparatus for processing rice according to claim 1, wherein The exhaust port is communicated with a supply air pipe, the air outlet end of the supply air pipe is opposite to the lower side of the extruding roller, the opposite side of the supply air pipe is provided with a second exhaust port, the second exhaust port is connected with a filter, the air outlet end of the supply air pipe is provided with a fan, and the side surface of the supply air pipe is provided with a bypass air port.

6. The hulling apparatus for processing rice according to claim 5, wherein A plurality of conical covers are arranged in the supply air pipe at the bypass air port, one end of each conical cover with a larger diameter is connected with the inner wall of the supply air pipe, the other end of each conical cover with a smaller diameter is provided with a through hole, and the other end of each conical cover with a smaller diameter faces the direction of gas flow.

7. The huller according to claim 5, wherein The filter comprises an adsorption box, a recovery box and a plurality of partitions arranged in the recovery box, the first end of the recovery box is communicated with the second exhaust port, the second end of the recovery box is communicated with the adsorption box, the adsorption box is used for adsorbing dust in the gas flow, and the partitions are arranged at intervals along the direction of the gas flow.

8. The shelling apparatus for processing rice according to claim 7, wherein The adsorption box comprises a box body, filter cloth, a water pump and a water pipe, the bottom of the box body is provided with the water pump, the water pump is communicated with the top of the box body through the water pipe, a plurality of layers of filter cloth are arranged in the box body, the filter cloth is provided with a plurality of air permeable holes, the filter cloth is sealingly connected with the box body around, the filter cloth is inclined to the horizontal plane, and the inclination directions of adjacent filter cloths are opposite.

9. The shelling apparatus for processing rice according to claim 8, wherein The water pipe is provided with a strip-shaped water outlet hole, the water outlet hole is in contact with the upper end surface of the uppermost layer of filter cloth, and the upper end of the filter cloth is in contact with the lower end of the upper layer of filter cloth.

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