Rice polishing device

Abstract

The utility model discloses a rice polishing device which comprises a processing box, a feeding hopper is fixedly installed on the left side of the top of the processing box, a sieve plate is fixedly installed in the processing box, and a stirring mechanism for stirring rice and a water spraying mechanism for wetting the rice are arranged on the processing box. The rice polishing device is reasonable in design, rice bran powder and rice flour in rice can be blown up to be separated from the rice through strong airflow generated by the air blower, the rice bran powder and the rice flour are sucked and collected through the dust collector, the polishing quality of the rice is improved, water mist is evenly sprayed to the rice below through the multiple first spray heads after impurities are removed, and the rice polishing effect is improved. According to the rice polishing device, the rice polishing time is prolonged, the rice polishing quality is further improved, the rice is stirred through a plurality of stirring rods, the water mist spraying uniformity is improved, the rice can be polished through a polishing roller and a bristle brush, the rice is intercepted through a material baffle, the rice polishing time is prolonged, and the rice polishing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a rice polishing device. Background Art

[0002] Polishing is an important process in the fine processing of rice. The essence of rice polishing is a humidifying and rubbing process. That is, the rice meeting certain precision is watered, wetted, and then polished to make the rice grains crystal clear, not adhering to bran powder, and not shedding rice powder, so as to improve its storage performance and increase its commercial value. At present, the commonly used polishing equipment mainly includes two types: dry polishing and wet polishing. Dry polishing machines mostly use iron rods embedded with polyurethane polishing belts, and some use materials such as cowhide, bristle brushes, and iron needle grass brushes to brush the rice, or a combination of two, combining polishing and brushing. Due to different water addition methods, the polishing effects of wet polishing methods are also different. At present, the main water addition methods include dripping water for processing in the feed hopper.

[0003] After retrieval, a rice polishing device announced in the Chinese patent with the publication number CN106732880A has the following technical key points: including a machine body, a feed hopper is installed in the middle at the top of the machine body, a water application device is installed on the left side of the machine body, a circulating fan is installed at the upper right end of the machine body, a conical discharge bin is installed at the bottom of the machine body, a first filter screen is installed at the upper end inside the machine body, a second filter screen is installed at the upper middle end inside the machine body, a polisher is installed in the middle of the machine body, a rice brushing device is installed at the lower middle end inside the machine body, and a third filter screen is installed at the lower end inside the machine body.

[0004] The above solution is found to still have at least the following defects in actual operation: when the device polishes rice, it does not separately collect the rice and the bran powder and rice powder shed from the rice, which easily causes the rice to fall into the conical discharge bin and be contaminated by the bran powder and rice powder again, affecting the processing quality of the rice. For this reason, we propose a rice polishing device to solve the above problems. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a rice polishing device, which solves the problem that when polishing rice, the rice and the bran powder and rice powder shed from the rice are not separately collected, which easily causes the rice to fall into the conical discharge bin and be contaminated by the bran powder and rice powder again, affecting the processing quality of the rice.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: a rice polishing device, including a processing box, a feed hopper is fixedly installed on the left side of the top of the processing box, a sieve plate is fixedly installed in the processing box, and a stirring mechanism for stirring the rice, a water spraying mechanism for wetting the rice, an impurity removing mechanism for removing bran powder impurities in the rice, and a polishing mechanism for polishing the rice are arranged on the processing box.

[0009] Preferably, the stirring mechanism includes a mounting seat, a first motor, a stirring shaft and a plurality of stirring rods. The mounting seat is fixedly installed on the top of the processing box, the first motor is fixedly installed on the mounting seat, the stirring shaft is fixedly installed at the output shaft end of the first motor, and the plurality of stirring rods are all fixedly installed on the stirring shaft and are evenly distributed.

[0010] Preferably, the water spraying mechanism includes a water tank, an atomizer, a water suction pipe, a plurality of connecting rods, a water storage box, a water delivery pipe and a plurality of first nozzles. The water tank is fixedly installed on the right side of the top of the processing box and is filled with clean water. The atomizer is fixedly installed on the top of the processing box and is located on the left side of the water tank. The water suction pipe is fixedly installed at the input end of the atomizer, and the end of the water suction pipe away from the atomizer extends into the water tank and is located below the liquid level. The plurality of connecting rods are all fixedly installed on the inner wall of the top of the processing box and are distributed in a circular array. The water storage box is fixedly installed at the bottom ends of the plurality of connecting rods. The water delivery pipe is fixedly installed at the output end of the atomizer, and the end of the water delivery pipe away from the atomizer is fixedly connected to the water storage box. The plurality of first nozzles are all fixedly installed at the bottom of the water storage box and are distributed in a circular array.

[0011] Preferably, the impurity removing mechanism includes an annular air delivery pipe, a plurality of support rods, a plurality of second nozzles, a plurality of connecting pipes, a blower and a blowing pipe. The annular air delivery pipe is fixedly installed in the processing box and is located below the sieve plate. The plurality of support rods are all fixedly installed on the top of the annular air delivery pipe and are distributed in a circular array. The plurality of second nozzles are respectively fixedly installed at the tops of the corresponding support rods. The plurality of connecting pipes are respectively fixedly installed on the corresponding second nozzles. The ends of the plurality of connecting pipes away from the corresponding second nozzles are all fixedly connected to the annular air delivery pipe. The blower is fixedly installed on the right side of the processing box, and the blowing pipe is fixedly installed at the output end of the blower. The end of the blowing pipe away from the blower is fixedly connected to the annular air delivery pipe.

[0012] Preferably, the impurity removing mechanism further includes a vacuum cleaner, a dust suction pipe, a dust suction hood, a dust discharge pipe and a collection box. The vacuum cleaner is fixedly installed on the left side of the processing box, the dust suction pipe is fixedly installed at the suction end of the vacuum cleaner, the end of the dust suction pipe away from the vacuum cleaner extends into the processing box, the dust suction hood is fixedly installed at the end of the dust suction pipe located in the processing box, the dust discharge pipe is fixedly installed at the discharge end of the vacuum cleaner, the collection box is fixedly installed on the left side of the processing box and is located below the vacuum cleaner, and the bottom end of the dust discharge pipe extends into the collection box.

[0013] Preferably, the top of the sieve plate is of a conical structure. A blanking pipe is fixedly installed at the bottom of the sieve plate, and a blanking electromagnetic valve is fixedly installed on the blanking pipe.

[0014] Preferably, the polishing mechanism includes two rotating shafts, two polishing rollers, two bristle brushes, two sprockets, a chain, a positioning plate, a cushion block and a second motor. The two rotating shafts are both rotatably installed on the left inner wall of the processing box and are symmetrically distributed front and back. The right ends of the two rotating shafts extend outside the processing box. The two polishing rollers are respectively fixedly installed on the two rotating shafts. The two bristle brushes are respectively fixedly installed on the two polishing rollers. The two sprockets are respectively fixedly installed at the right ends of the two rotating shafts. The chain is wound around the two sprockets. The positioning plate is fixedly installed on the right side of the processing box. The cushion block is fixedly installed on the top of the positioning plate. The second motor is fixedly installed on the top of the cushion block. The output shaft end of the second motor is fixedly connected to the right end of one of the rotating shafts.

[0015] Preferably, a baffle is fixedly installed in the processing box below the two polishing rollers. The front side of the baffle is separated from the inner wall of the processing box.

[0016] Preferably, a filter screen is fixedly installed in the processing box below the baffle. The filter screen is inclined. The bottom inner wall of the processing box is of a conical structure. A waste pipe is fixedly installed at the bottom of the processing box. An outlet pipe is fixedly installed on the right side of the processing box. The left end of the outlet pipe is flush with the right side of the filter screen.

[0017] Preferably, a maintenance opening is formed in the front side of the processing box, and a maintenance door is rotatably installed in the maintenance opening.

[0018] (3) Beneficial effects

[0019] The utility model provides a rice polishing device, which has the following beneficial effects:

[0020] (1) For this rice polishing device, by using the stirring mechanism composed of a mounting seat, a first motor, a stirring shaft and a plurality of stirring rods, the rice can be fully stirred by the plurality of stirring rods, which is convenient for removing impurities and uniformly wetting the rice.

[0021] (2) For this rice polishing device, by using the water spraying mechanism composed of a water tank, an atomizer, a water suction pipe, a plurality of connecting rods, a water storage box, a water delivery pipe and a plurality of first nozzles, the water mist can be evenly sprayed onto the rice below through the plurality of first nozzles, improving the uniformity of water mist spraying and being beneficial to polishing the rice.

[0022] (3) The rice polishing device can utilize the impurity removal mechanism composed of an annular air pipe, multiple support rods, multiple second nozzles, multiple connecting pipes, a blower, a blowing pipe, a vacuum cleaner, a dust suction pipe, a dust suction hood, a dust exhaust pipe and a collection box. It can use the strong air flow generated by the blower to blow up the bran powder and rice flour in the rice and separate them from the rice, and suck and collect the bran powder and rice flour through the vacuum cleaner, improving the quality of rice polishing.

[0023] (4) The rice polishing device can utilize the polishing mechanism composed of two rotating shafts, two polishing rollers, two bristle brushes, two sprockets, a chain, a positioning plate, a cushion block and a second motor. It can polish the rice with the polishing rollers and bristle brushes, and intercept the rice through the baffle plate, extending the polishing time of the rice and improving the polishing quality of the rice. Description of the Drawings

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model;

[0025] Figure 2 It is a sectional structure schematic diagram of the front view of the present utility model;

[0026] Figure 3 It is a three-dimensional structure schematic diagram inside the present utility model;

[0027] Figure 4 It is a sectional three-dimensional structure schematic diagram of the present utility model.

[0028] In the figure: 1, processing box; 2, feed hopper; 3, sieve plate; 4, mounting seat; 5, first motor; 6, stirring shaft; 7, stirring rod; 8, water tank; 9, atomizer; 10, water suction pipe; 11, connecting rod; 12, water storage box; 13, water delivery pipe; 14, first nozzle; 15, annular air pipe; 16, support rod; 17, second nozzle; 18, connecting pipe; 19, blower; 20, blowing pipe; 21, vacuum cleaner; 22, dust suction pipe; 23, dust suction hood; 24, dust exhaust pipe; 25, collection box; 26, blanking pipe; 27, blanking solenoid valve; 28, rotating shaft; 29, polishing roller; 30, bristle brush; 31, sprocket; 32, chain; 33, positioning plate; 34, cushion block; 35, second motor; 36, baffle plate; 37, filter screen; 38, waste pipe; 39, discharge pipe; 40, inspection door. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1-4 shown, the present invention provides a technical solution: a rice polishing device, which includes a processing box 1. A feed hopper 2 is fixedly installed on the left side of the top of the processing box 1. It should be noted that a cover plate is rotatably installed on the top of the feed hopper 2, and the cover plate can prevent bran powder and rice powder from leaking out and polluting the surrounding environment. A sieve plate 3 is fixedly installed in the processing box 1. The top of the sieve plate 3 is of a conical structure. A blanking pipe 26 is fixedly installed at the bottom of the sieve plate 3, and a blanking solenoid valve 27 is fixedly installed on the blanking pipe 26. A stirring mechanism for stirring the rice, a water spraying mechanism for wetting the rice, a impurity removing mechanism for removing bran powder impurities in the rice, and a polishing mechanism for polishing the rice are provided on the processing box 1.

[0031] In this embodiment, the above-mentioned stirring mechanism includes a mounting seat 4, a first motor 5, a stirring shaft 6, and a plurality of stirring rods 7. The mounting seat 4 is fixedly installed on the top of the processing box 1. The first motor 5 is fixedly installed on the mounting seat 4. The stirring shaft 6 is fixedly installed at the output shaft end of the first motor 5. The plurality of stirring rods 7 are all fixedly installed on the stirring shaft 6 and are evenly distributed. It should be noted that the inclination angles of the plurality of stirring rods 7 are the same as the inclination angle of the sieve plate 3.

[0032] In this embodiment, the above-mentioned impurity removal mechanism includes an annular air delivery pipe 15, a plurality of support rods 16, a plurality of second nozzles 17, a plurality of connecting pipes 18, a blower 19, and a blowing pipe 20. The annular air delivery pipe 15 is fixedly installed inside the processing box 1 and is located below the sieve plate 3. The plurality of support rods 16 are all fixedly installed on the top of the annular air delivery pipe 15 and are distributed in an annular array. The plurality of second nozzles 17 are respectively fixedly installed at the tops of the corresponding support rods 16. Through the plurality of second nozzles 17, the full area can be enlarged, and the separation effect of bran powder and rice flour can be improved. The plurality of connecting pipes 18 are respectively fixedly installed on the corresponding second nozzles 17. One ends of the plurality of connecting pipes 18 far from the corresponding second nozzles 17 are fixedly connected to the annular air delivery pipe 15. The blower 19 is fixedly installed on the right side of the processing box 1. The blowing pipe 20 is fixedly installed at the output end of the blower 19. One end of the blowing pipe 20 far from the blower 19 is fixedly connected to the annular air delivery pipe 15. The impurity removal mechanism further includes a vacuum cleaner 21, a dust suction pipe 22, a dust suction hood 23, a dust discharge pipe 24, and a collection box 25. The vacuum cleaner 21 is fixedly installed on the left side of the processing box 1. The dust suction pipe 22 is fixedly installed at the suction end of the vacuum cleaner 21. One end of the dust suction pipe 22 far from the vacuum cleaner 21 extends into the processing box 1. The dust suction hood 23 is fixedly installed at the end of the dust suction pipe 22 located inside the processing box 1. A filter screen is arranged inside the dust suction hood 23 to prevent rice from entering the dust suction hood 23. The dust suction effect can be improved through the dust suction hood 23. The dust discharge pipe 24 is fixedly installed at the discharge end of the vacuum cleaner 21. The collection box 25 is fixedly installed on the left side of the processing box 1 and is located below the vacuum cleaner 21. The bottom end of the dust discharge pipe 24 extends into the collection box 25.

[0033] In this embodiment, the above-mentioned water spraying mechanism includes a water tank 8, an atomizer 9, a water suction pipe 10, a plurality of connecting rods 11, a water storage box 12, a water delivery pipe 13, and a plurality of first nozzles 14. The water tank 8 is fixedly installed on the upper right side of the processing box 1 and is filled with clean water. The atomizer 9 is fixedly installed on the top of the processing box 1 and is located on the left side of the water tank 8. The atomizer 9 is used to produce water mist to moisten the rice and improve the quality of rice polishing. The water suction pipe 10 is fixedly installed at the input end of the atomizer 9. One end of the water suction pipe 10 far from the atomizer 9 extends into the water tank 8 and is located below the liquid level. The plurality of connecting rods 11 are all fixedly installed on the inner wall of the top of the processing box 1 and are distributed in an annular array. The water storage box 12 is fixedly installed at the bottom ends of the plurality of connecting rods 11. The water delivery pipe 13 is fixedly installed at the output end of the atomizer 9. One end of the water delivery pipe 13 far from the atomizer 9 is fixedly connected to the water storage box 12. The plurality of first nozzles 14 are all fixedly installed at the bottom of the water storage box 12 and are distributed in an annular array. Through the plurality of first nozzles 14, it is convenient to spray water mist downward evenly.

[0034] In this embodiment, a maintenance opening is provided on the front side of the above-mentioned processing box 1. A maintenance door 40 is rotatably installed in the maintenance opening. A baffle plate 36 is fixedly installed in the processing box 1 below the two polishing rollers 29. The front side of the baffle plate 36 is separated from the inner wall of the processing box 1. The baffle plate 36 can intercept the rice, extend the polishing time of the rice by the bristle brushes 30, and improve the polishing effect. A filter screen 37 is fixedly installed in the processing box 1 below the baffle plate 36. The filter screen 37 is inclined. The bottom inner wall of the processing box 1 is of a conical structure. A waste pipe 38 is fixedly installed at the bottom of the processing box 1. The waste pipe 38 can screen and separate the broken rice and rice flour generated during the polishing process of the rice, further improving the polishing quality of the rice. An outlet pipe 39 is fixedly installed on the right side of the processing box 1. The left end of the outlet pipe 39 is flush with the right side of the filter screen 37.

[0035] In this embodiment, the above-mentioned polishing mechanism includes two rotating shafts 28, two polishing rollers 29, two bristle brushes 30, two sprockets 31, a chain 32, a positioning plate 33, a cushion block 34 and a second motor 35. The two rotating shafts 28 are both rotatably installed on the left inner wall of the processing box 1 and are symmetrically distributed front and back. The right ends of the two rotating shafts 28 both extend outside the processing box 1. The two polishing rollers 29 are respectively fixedly installed on the two rotating shafts 28. The two bristle brushes 30 are respectively fixedly installed on the two polishing rollers 29. The two sprockets 31 are respectively fixedly installed at the right ends of the two rotating shafts 28. The chain 32 is wound around the two sprockets 31. By using the two sprockets 31 and the chain 32, the two polishing rollers 29 can be controlled to rotate simultaneously. The positioning plate 33 is fixedly installed on the right side of the processing box 1. The cushion block 34 is fixedly installed on the top of the positioning plate 33. The second motor 35 is fixedly installed on the top of the cushion block 34. The output shaft end of the second motor 35 is fixedly connected to the right end of one of the rotating shafts 28.

[0036] In this embodiment, a control switch is installed on the processing box 1. The first motor 5, the atomizer 9, the blower 19, the vacuum cleaner 21, the feeding electromagnetic valve 27, the second motor 35 and the control switch are sequentially electrically connected to an external power supply line through wires to form a circuit. The control switch can respectively control the start and stop of the first motor 5, the atomizer 9, the blower 19, the vacuum cleaner 21, the feeding electromagnetic valve 27 and the second motor 35.

[0037] With the above structure, a rice polishing device provided by the utility model can utilize the strong air flow generated by the blower 19 to blow up the bran powder and rice flour in the rice and separate them from the rice, and suck and collect the bran powder and rice flour through the vacuum cleaner 21, improving the polishing quality of the rice. After removing impurities, water mist is evenly sprayed onto the rice below through multiple first nozzles 14 to further improve the polishing quality of the rice. The rice is stirred by multiple stirring rods 7 to improve the uniformity of the water mist spraying. It can also polish the rice with the polishing roller 29 and the bristle brush 30, and intercept the rice with the baffle 36 to extend the polishing time of the rice and improve the polishing quality of the rice. Specifically in use, open the cover plate and add an appropriate amount of rice into the processing box 1 through the feed hopper 2. After covering the cover plate, control the first motor 5, the blower 19 and the vacuum cleaner 21 to run. The strong air flow blown by the blower 19 blows upward evenly through multiple second nozzles 17. The first motor 5 drives the stirring shaft 6 to rotate, and then drives multiple stirring rods 7 to stir the rice. Under the action of the strong air flow below, the bran powder and rice flour mixed in the rice are blown away by the air flow. Under the suction action of the vacuum cleaner 21, the bran powder and rice flour enter the collection box 25 through the dust exhaust pipe 24 for collection. When the rice is decontaminated, turn off the blower 19 and the vacuum cleaner 21, and control the atomizer 9 to run. The atomizer 9 extracts the clear water in the water tank 8 to generate water mist, and the water mist is evenly sprayed downward through multiple first nozzles 14. Under the stirring of multiple stirring rods 7, the rice is evenly wetted. Turn off the atomizer 9, open the blanking solenoid valve 27, and control the wetted rice to slowly fall downward. At this time, control the second motor 35 to run. The second motor 35 drives the rotating shaft 28 to rotate. Under the combined action of two sprockets 31 and the chain 32, the two polishing rollers 29 rotate at the same speed and in the same direction. Under the action of the baffle 36, the rice falls on the baffle 36. Under the rotation of the two polishing rollers 29, the rice is polished twice from the back to the front, greatly improving the polishing quality of the rice. The broken rice generated during the polishing process is discharged from the processing box through the filter screen 37 and the waste pipe 38 for collection. The polished rice is discharged from the processing box 1 through the discharge pipe 39 for collection.

[0038] The above is only the specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope recorded by the utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claimed rights.

Claims

1. A rice polishing device, characterized in that: It includes a processing box (1). A feed hopper (2) is fixedly installed on the left side of the top of the processing box (1). A sieve plate (3) is fixedly installed inside the processing box (1). A stirring mechanism for stirring rice is arranged on the processing box (1). The stirring mechanism includes a mounting seat (4), a first motor (5), a stirring shaft (6) and a plurality of stirring rods (7); a water spraying mechanism for wetting the rice, the water spraying mechanism includes a water tank (8), an atomizer (9), a water suction pipe (10), a plurality of connecting rods (11), a water storage box (12), a water delivery pipe (13) and a plurality of first nozzles (14); a impurity removing mechanism for removing bran powder impurities in the rice, the impurity removing mechanism includes an annular air delivery pipe (15), a plurality of support rods (16), a plurality of second nozzles (17), a plurality of connecting pipes (18), a blower (19) and a blowing pipe (20); and a polishing mechanism for polishing the rice, the polishing mechanism includes two rotating shafts (28), two polishing rollers (29), two bristle brushes (30), two sprockets (31), a chain (32), a positioning plate (33), a cushion block (34) and a second motor (35).

2. The rice polishing device according to claim 1, characterized in that: The mounting seat (4) is fixedly installed on the top of the processing box (1). The first motor (5) is fixedly installed on the mounting seat (4). The stirring shaft (6) is fixedly installed at the output shaft end of the first motor (5). A plurality of the stirring rods (7) are all fixedly installed on the stirring shaft (6) and are evenly distributed.

3. A rice polishing device according to claim 1, characterized in that: The water tank (8) is fixedly installed on the right side of the top of the processing box (1) and is filled with clean water. The atomizer (9) is fixedly installed on the top of the processing box (1) and is located on the left side of the water tank (8). The water suction pipe (10) is fixedly installed at the input end of the atomizer (9). One end of the water suction pipe (10) far from the atomizer (9) extends into the water tank (8) and is located below the liquid level. A plurality of the connecting rods (11) are all fixedly installed on the inner wall of the top of the processing box (1) and are distributed in an annular array. The water storage box (12) is fixedly installed at the bottom ends of a plurality of the connecting rods (11). The water delivery pipe (13) is fixedly installed at the output end of the atomizer (9). One end of the water delivery pipe (13) far from the atomizer (9) is fixedly connected to the water storage box (12). A plurality of the first nozzles (14) are all fixedly installed at the bottom of the water storage box (12) and are distributed in an annular array.

4. A rice polishing device according to claim 1, characterized in that: The annular gas transmission pipe (15) is fixedly installed inside the processing box (1) and is located below the sieve plate (3). A plurality of the support rods (16) are fixedly installed on the top of the annular gas transmission pipe (15) and are distributed in an annular array. A plurality of the second nozzles (17) are respectively fixedly installed at the tops of the corresponding support rods (16). A plurality of the connecting pipes (18) are respectively fixedly installed on the corresponding second nozzles (17). One ends of the plurality of connecting pipes (18) far away from the corresponding second nozzles (17) are fixedly connected to the annular gas transmission pipe (15). The blower (19) is fixedly installed on the right side of the processing box (1). The air blowing pipe (20) is fixedly installed at the output end of the blower (19). One end of the air blowing pipe (20) far away from the blower (19) is fixedly connected to the annular gas transmission pipe (15).

5. A rice polishing device according to claim 1, characterized in that: The impurity removal mechanism further includes a vacuum cleaner (21), a dust suction pipe (22), a dust suction hood (23), a dust discharge pipe (24) and a collection box (25). The vacuum cleaner (21) is fixedly installed on the left side of the processing box (1). The dust suction pipe (22) is fixedly installed at the suction end of the vacuum cleaner (21). One end of the dust suction pipe (22) far away from the vacuum cleaner (21) extends into the processing box (1). The dust suction hood (23) is fixedly installed at one end of the dust suction pipe (22) located inside the processing box (1). The dust discharge pipe (24) is fixedly installed at the discharge end of the vacuum cleaner (21). The collection box (25) is fixedly installed on the left side of the processing box (1) and is located below the vacuum cleaner (21). The bottom end of the dust discharge pipe (24) extends into the collection box (25).

6. The rice polishing device according to claim 1, characterized in that: The top of the sieve plate (3) is of a conical structure. A blanking pipe (26) is fixedly installed at the bottom of the sieve plate (3). A blanking solenoid valve (27) is fixedly installed on the blanking pipe (26).

7. A rice polishing device according to claim 1, characterized in that: Both of the rotating shafts (28) are rotatably installed on the left inner wall of the processing box (1) and are symmetrically distributed front and back. The right ends of both of the rotating shafts (28) extend outside the processing box (1). Two polishing rollers (29) are respectively fixedly installed on the two rotating shafts (28). Two bristle brushes (30) are respectively fixedly installed on the two polishing rollers (29). Two sprockets (31) are respectively fixedly installed at the right ends of the two rotating shafts (28). The chain (32) is wound around the two sprockets (31). The positioning plate (33) is fixedly installed on the right side of the processing box (1). The cushion block (34) is fixedly installed on the top of the positioning plate (33). The second motor (35) is fixedly installed on the top of the cushion block (34). The output shaft end of the second motor (35) is fixedly connected to the right end of one of the rotating shafts (28).

8. A rice polishing device according to claim 7, characterized in that: A baffle plate (36) is fixedly installed inside the processing box (1) and is located below the two polishing rollers (29). The front side of the baffle plate (36) is separated from the inner wall of the processing box (1).

9. A rice polishing device according to claim 8, characterized in that: A filter screen (37) is fixedly installed in the processing box (1) below the material baffle (36). The filter screen (37) is inclined. The inner wall of the bottom of the processing box (1) is of a conical structure. A waste pipe (38) is fixedly installed at the bottom of the processing box (1). An outlet pipe (39) is fixedly installed on the right side of the processing box (1). The left end of the outlet pipe (39) is flush with the right side of the filter screen (37).

10. A rice polishing device according to claim 1, characterized in that: An inspection opening is formed in the front side of the processing box (1), and an inspection door (40) is rotatably installed in the inspection opening.

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