A potato cleaning apparatus and method

Abstract

This invention discloses a potato washing device and method. The potato washing device includes: a main body with a washing chamber inside, and a discharge chute on one side of the washing chamber; several roller brush assemblies, each roller brush assembly including a support frame, with a rotating roller rotatably connected between two parallel rods of the support frame via a first rotating shaft; the roller brush assembly includes a fixed roller brush assembly and a lifting roller brush assembly, the support frame of the fixed roller brush assembly being fixedly connected to the main body; a lifting device for moving the lifting roller brush assembly up and down; a support plate; a translation device for moving the support plate into or out of the washing chamber; a driving device for rotating the rotating roller; and a water spraying device for spraying water onto the potatoes. The lifting device moves the lifting roller brush assembly up and down, causing the potatoes on the rotating rollers to fall onto the support plate through the space between adjacent rotating rollers, thus achieving potato output.

Description

Technical Field

[0001] This invention belongs to the field of potato processing technology, specifically relating to a potato cleaning device and cleaning method. Background Technology

[0002] Potatoes are a popular agricultural product due to their rich nutritional value. However, potatoes grow underground and inevitably come with soil when dug up, so they need to be cleaned during production and processing.

[0003] Patent CN221330111U discloses a potato washing device with a recycling function. Potatoes fall onto the washing rollers, and water in the clean water tank is drawn into the connecting pipe by the spray pump and then delivered to the spray nozzle through the spray pipe. The water is sprayed onto the potatoes for washing. At the same time, the washing rollers are rotated by the motor and the transmission belt to wash the potatoes.

[0004] However, after the potatoes are cleaned, the potato output of the aforementioned potato washing equipment is inconvenient. Summary of the Invention

[0005] The purpose of this invention is to provide a potato washing device and method, which makes potato output more convenient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a potato washing device, comprising: The main housing has an upward-facing cleaning chamber inside, and a discharge chute is provided on one side of the cleaning chamber. A plurality of roller brush assemblies, the roller brush assembly including a support frame, the support frame including two parallel rods and a fixed crossbar fixed between the two parallel rods, a rotating roller rotatably connected between the two parallel rods via a first rotating shaft, the outer wall of the rotating roller being provided with a brush, and the rotating roller being disposed in the cleaning chamber; The roller brush assembly includes a fixed roller brush assembly and a lifting roller brush assembly, which are arranged sequentially along the length of the cleaning chamber. The support frame of the fixed roller brush assembly is fixedly connected to the main body. A lifting device, which is used to drive the lifting roller brush assembly to move up and down; A support plate is disposed below the roller brush assembly and is inclined toward the discharge trough side; A translation device, used to move the support plate into or out of the cleaning chamber; A driving device that drives the rotating roller to rotate; A water spraying device sprays water onto the potatoes on the rotating roller.

[0007] Furthermore, the cleaning chamber is provided with telescopic sliding grooves on opposite sides, and the two sides of the support plate are respectively inserted into the two telescopic sliding grooves. The cleaning chamber is provided with a discharge plate groove on the side away from the discharge trough.

[0008] Furthermore, the translation device includes a translation block, two connecting seats, an adjusting screw, and an adjusting motor. The translation block is fixed to the support plate, and one of the telescopic grooves extends from the translation block. The translation block is provided with a telescopic threaded hole. The two connecting seats are fixed to the outer wall of the main housing. The adjusting screw is rotatably connected between the two connecting seats and is threadedly connected to the telescopic threaded hole. The adjusting motor is fixed to one of the connecting seats, and the rotating shaft of the adjusting motor is fixedly connected to one end of the adjusting screw.

[0009] Furthermore, one of the parallel rods of the support frame is provided with a driven mounting groove. A second pulley is rotatably connected to the driven mounting groove via a second rotating shaft. A first pulley is fixed on the first rotating shaft. A driven connecting belt is installed between the first pulley and the second pulley. A first bevel gear is fixed to one end of the second rotating shaft extending out of the driven mounting groove. A support protrusion is fixed on the parallel rod. A vertical shaft is rotatably connected to the support protrusion. A second bevel gear is fixed on the vertical shaft. The second bevel gear meshes with the first bevel gear. A downward-opening sliding groove is provided on the vertical shaft. A support plate is fixed on the outer wall of the main housing. A slide rod is inserted into the slide groove. A slide shaft is fixed at one end of the slide rod that extends out of the slide groove. The slide shaft is rotatably connected to the support plate. A third bevel gear is fixed on the slide shaft. The drive device includes two fixed seats, which are fixed to the outer wall of the main housing. A drive shaft is rotatably connected between the two fixed seats. A fourth bevel gear that meshes with the third bevel gear is fixed on the drive shaft. A drive motor is fixed on one of the fixed seats, and the shaft of the drive motor is fixedly connected to one end of the drive shaft.

[0010] Furthermore, a connecting crossbar is fixed to one end of the fixed crossbar, and a lifting vertical bar is fixed to the connecting crossbar. The supporting crossbar is provided with a lifting groove corresponding to the lifting vertical bar, and the lifting vertical bar passes through the lifting groove. The lifting vertical rod of the fixed roller brush assembly is fixedly connected to the supporting horizontal plate, and the lifting vertical rod of the lifting roller brush assembly is slidably connected to the supporting horizontal plate. The lifting device is configured as a first electric push rod, which is fixed to the outside of the main housing. A push rod is fixed to the end of the push rod of the first electric push rod, and the push rod is fixedly connected to the lifting vertical rod of the lifting roller brush assembly.

[0011] Furthermore, the cleaning chamber is fixed with a filter box, the filter box is provided with a filter tank, the side wall of the filter box is provided with a communication groove with the cleaning chamber, a filter plate is fixed in the communication groove, and a water pump is also included. The inlet of the water pump is connected to the filter tank, and the outlet of the water pump is connected to the water spraying device.

[0012] Furthermore, the water spraying device is configured with a plurality of water spray pipes, each with a water spray hole on its side wall facing the rotating roller. The water spray pipes are fixed above the main housing, and the outlet of the water pump is connected to the water spray pipes.

[0013] A potato washing method is also disclosed, based on the aforementioned potato washing device, comprising the following steps: S1: Spacing adjustment: The lifting roller brush assembly is driven up and down by the lifting device to adjust the spacing between the rotating rollers of the lifting roller brush assembly and the fixed roller brush assembly so that the spacing is suitable for cleaning potatoes. S2: Cleaning operation. The translation device moves the support plate out of the cleaning chamber, puts the potatoes to be cleaned into the cleaning chamber of the main box and places them above the rotating rollers. The water spraying device is started to spray water onto the potatoes on the rotating rollers. At the same time, the drive device is started to drive all the rotating rollers to rotate. S3: Discharge after cleaning. After cleaning, the translation device moves the support plate into the cleaning chamber. The lifting device readjusts the position of the rotating roller of the lifting roller assembly, widening the gap between adjacent rotating rollers, so that the potatoes fall through the gap to the support plate below. The potatoes are then guided to slide out of the discharge chute along the support plate, completing the discharge.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) The lifting device drives the lifting roller brush assembly to move up and down. At this time, the potatoes on the rotating roller will fall onto the support plate through the space between the adjacent rotating rollers. Finally, the potatoes are output from the discharge chute through the support plate. It is only necessary to control the rotating roller of the lifting roller brush assembly to rise, so that the potatoes can be output, making the output more convenient. (2) During the cleaning process, the water that falls from the brush will be dirty. The support plate is located on the outside of the cleaning chamber and will not come into contact with the water that falls, thus preventing the support plate from getting dirty and preventing the potatoes from falling onto the support plate and getting dirty. (3) The drive device achieves efficient power transmission through a multi-stage transmission path of “drive motor → drive shaft → meshing of fourth bevel gear and third bevel gear → sliding shaft → sliding rod → vertical shaft → meshing of second bevel gear and first bevel gear → second pulley, driven connecting belt, first pulley → rotating roller”; at the same time, the sliding cooperation between the sliding rod and the sliding groove cleverly solves the problem of the vertical movement and power transmission of the lifting roller brush assembly, and the vertical movement of the lifting roller brush assembly will not affect the power transmission. Attached Figure Description

[0015] Figure 1 A schematic diagram of a potato washing equipment; Figure 2 for Figure 2 A magnified view of a section at point I; Figure 3 for Figure 2 Enlarged view of section II in the middle; Figure 4 for Figure 2 A magnified view of a section at point III; Figure 5 for Figure 1 Top view; Figure 6 for Figure 5 Cross-sectional view at point AA; Figure 7 for Figure 5 Cross-sectional view at point BB; Figure 8 for Figure 7 A magnified view of a section at point IV in the middle; Figure 9 for Figure 7 A magnified view of the middle V section; Figure 10 A cross-sectional view of the potato washing equipment in another state.

[0016] In the diagram: 1. Main housing; 2. Cleaning chamber; 3. Discharge chute; 4. Roller brush assembly; 5. Support frame; 6. Parallel bar; 7. Fixed crossbar; 8. First rotating shaft; 9. Rotating roller; 10. Brush; 11. Fixed roller brush assembly; 12. Lifting roller brush assembly; 13. Support plate; 14. Driven mounting slot; 15. Second rotating shaft; 16. Second pulley; 17. First pulley; 18. Driven connecting belt; 19. First bevel gear; 20. Support protrusion; 21. Vertical shaft; 22. Second bevel gear; 23. Slide groove; 24. Support crossbar 25. Plate; 26. Slide rod; 27. Slide shaft; 28. Third bevel gear; 29. ​​Fixed seat; 30. Drive shaft; 31. Fourth bevel gear; 32. Drive motor; 33. Connecting crossbar; 34. Lifting vertical bar; 35. Lifting groove; 36. First electric push rod; 37. Push rod; 38. Plate outlet groove; 39. Telescopic slide groove; 40. Translation block; 41. Connecting seat; 42. Adjusting screw; 43. Adjusting motor; 44. Telescopic threaded hole; 45. Filter box; 46. Filter tank; 47. Connecting groove; 48. Filter plate; 49. Water pump. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-10 This invention provides a technical solution for potato washing equipment.

[0019] A potato washing device, comprising: The main housing 1 has an upward-facing cleaning chamber 2 inside, and a discharge chute 3 is provided on one side of the cleaning chamber 2. A plurality of roller brush assemblies 4, the roller brush assembly 4 includes a support frame 5, the support frame 5 includes two parallel rods 6 and a fixed crossbar 7 fixed between the two parallel rods 6, a rotating roller 9 is rotatably connected between the two parallel rods 6 through a first rotating shaft 8, a brush 10 is provided on the outer wall of the rotating roller 9, and the rotating roller 9 is disposed in the cleaning chamber 2. The roller brush assembly 4 includes a fixed roller brush assembly 11 and a lifting roller brush assembly 12. The fixed roller brush assembly 11 and the lifting roller brush assembly 12 are arranged sequentially along the length of the cleaning chamber 2. The support frame 5 of the fixed roller brush assembly 11 is fixedly connected to the main housing 1. The lifting device is used to drive the lifting roller brush assembly 12 to move up and down. Support plate 13 is disposed below the roller brush assembly 4 and is inclined toward the discharge chute 3. Translation device, used to move the support plate 13 into or out of the cleaning chamber 2; The drive unit drives the rotating roller 9 to rotate; A water spraying device sprays water onto the potatoes on the rotating roller 9.

[0020] When potatoes need to be cleaned, they are placed above the rotating roller 9, and then the water spraying device sprays water onto the potatoes on the rotating roller 9. At the same time, the drive device drives each rotating roller 9 to rotate, and the brushes 10 on the rotating roller 9 will drive the potatoes to rotate, thereby cleaning the potatoes better. During the cleaning process, the support plate 13 is located outside the cleaning chamber 2. After the potatoes are cleaned, the translation device moves the support plate 13 to below the roller brush assembly 4, and the lifting device moves the lifting roller brush assembly 12 upward. Figure 10 (State), at this time the potatoes located on the rotating roller 9 will fall onto the support plate 13 through the space between the adjacent rotating rollers 9, and finally the potatoes will be output from the discharge chute 3 through the support plate 13.

[0021] Simply controlling the rotating roller 9 of the lifting brush assembly 12 to rise is sufficient to output potatoes, making the output more convenient. During the washing process, the water falling from the brush 10 may become dirty. The support plate 13, located on the outside of the washing chamber 2, will not come into contact with the falling water, thus preventing the support plate 13 from getting dirty and preventing subsequent potatoes from falling onto the support plate 13 and becoming dirty.

[0022] The cleaning chamber 2 has telescopic sliding grooves 38 on opposite sides. The two sides of the support plate 13 are respectively inserted into the two telescopic sliding grooves 38. The cleaning chamber 2 has a discharge groove 37 on the side away from the discharge chute 3. The support plate 13 can slide relative to the telescopic sliding grooves 38, so that the support plate 13 can move out of or into the discharge groove 37.

[0023] The following is one embodiment of the translation device, which includes a translation block 39, two connecting seats 40, an adjusting screw 41, and an adjusting motor 42. The translation block 39 is fixed on the support plate 13, and one of the telescopic sliding grooves 38 extends from the translation block 39. The translation block 39 is provided with a telescopic threaded hole 43. The two connecting seats 40 are fixed on the outer wall of the main housing 1. The adjusting screw 41 is rotatably connected between the two connecting seats 40 and is threadedly connected to the telescopic threaded hole 43. The adjusting motor 42 is fixed on one of the connecting seats 40, and the rotating shaft of the adjusting motor 42 is fixedly connected to one end of the adjusting screw 41.

[0024] The adjusting motor 42 drives the adjusting screw 41 to rotate, thereby moving the translation block 39. The translation block 39 moves the support plate 13, so that the support plate 13 can move into or out of the cleaning chamber 2.

[0025] The following is one embodiment of driving the rotating roller 9 to rotate. One of the parallel rods 6 of the support frame 5 is provided with a driven mounting groove 14. A second pulley 16 is rotatably connected to the driven mounting groove 14 via a second rotating shaft 15. A first pulley 17 is fixed to a first rotating shaft 8. A driven connecting belt 18 is installed between the first pulley 17 and the second pulley 16. A first bevel gear 19 is fixed to one end of the second rotating shaft 15 extending out of the driven mounting groove 14. A support protrusion 20 is fixed to the parallel rod 6. A vertical shaft 21 is rotatably connected to the support protrusion 20. A second bevel gear 22 is fixed to the vertical shaft 21. The second bevel gear 22 meshes with the first bevel gear 19. A downward-opening sliding groove 23 is provided on the vertical shaft 21. A support plate 24 is fixed on the outer wall of the main housing 1. A slide rod 25 is inserted into the slide groove 23. A slide shaft 26 is fixed at one end of the slide rod 25 that extends out of the slide groove 23. The slide shaft 26 is rotatably connected to the support plate 24. A third bevel gear 27 is fixed on the slide shaft 26. The drive unit includes two fixed seats 28, which are fixed on the outer wall of the main housing 1. A drive shaft 29 is rotatably connected between the two fixed seats 28. A fourth bevel gear 30 that meshes with a third bevel gear 27 is fixed on the drive shaft 29. A drive motor 31 is fixed on one of the fixed seats 28. The shaft of the drive motor 31 is fixedly connected to one end of the drive shaft 29.

[0026] The drive process of the drive unit is as follows: 1. Drive motor 31 starts, driving drive shaft 29 to rotate; 2. The fourth bevel gear 30 on the drive shaft 29 meshes with the third bevel gear 27 on the sliding shaft 26, causing the sliding shaft 26 to rotate; 3. The sliding shaft 26 drives the vertical shaft 21 to rotate via the sliding rod 25; 4. The second bevel gear 22 on the vertical shaft 21 meshes with and drives the first bevel gear 19 on the second rotating shaft 15, causing the second rotating shaft 15 to rotate; 5. The second pulley 16 on the second rotating shaft 15 drives the first pulley 17 on the first rotating shaft 8 through the driven connecting belt 18, and finally drives the rotating roller 9 to rotate.

[0027] The drive device achieves efficient power transmission through a multi-stage transmission path: "drive motor 31 → drive shaft 29 → engagement of fourth bevel gear 30 and third bevel gear 27 → sliding shaft 26 → sliding rod 25 → vertical shaft 21 → engagement of second bevel gear 22 and first bevel gear 19 → second pulley 16, driven connecting belt 18, first pulley 17 → rotating roller 9". At the same time, the sliding cooperation between sliding rod 25 and sliding groove 23 cleverly solves the problem of power transmission in the up-and-down movement of lifting roller brush assembly 12, so that the up-and-down movement of lifting roller brush assembly 12 does not affect the power transmission.

[0028] The following is one embodiment of the lifting device: a connecting crossbar 32 is fixed to one end of the fixed crossbar 7, and a lifting vertical bar 33 is fixed to the connecting crossbar 32. The supporting crossbar 24 is provided with a lifting groove 34 corresponding to the lifting vertical bar 33, and the lifting vertical bar 33 passes through the lifting groove 34. The lifting vertical rod 33 of the fixed roller brush assembly 11 is fixedly connected to the supporting horizontal plate 24, and the lifting vertical rod 33 of the lifting roller brush assembly 12 is slidably connected to the supporting horizontal plate 24. The lifting device is configured as a first electric push rod 35, which is fixed to the outside of the main housing 1. A push rod 36 is fixed to the end of the push rod of the first electric push rod 35, and the push rod 36 is fixedly connected to the lifting vertical rod 33 of the lifting roller brush assembly 12. The first electric push rod 35 drives the push rod 36 to move up and down, and the push rod 36 drives the rotating roller 9 to move up and down through the lifting vertical rod 33 of the lifting roller brush assembly 12, thereby realizing the discharge of potatoes.

[0029] The cleaning chamber 2 is fixed with a filter box 44, which is provided with a filter tank 45. The side wall of the filter box 44 is provided with a communication groove 46 with the cleaning chamber 2. A filter plate 47 is fixed in the communication groove 46. The cleaning chamber 2 is also provided with a water pump 48. The inlet of the water pump 48 is connected to the filter tank 45, and the outlet of the water pump 48 is connected to the water spraying device.

[0030] Water flowing down from the brush 10 enters the bottom of the cleaning chamber 2, then enters the filter tank 45 of the filter box 44 through the filter holes on the filter plate 47, and then the water pump 48 pumps the filtered water to the spray device.

[0031] The water spraying device consists of several spray pipes, each with spray holes on its sidewall facing the rotating roller. The spray pipes are fixed above the main housing 1, and the outlet of the water pump 48 is connected to the spray pipes. The water pump 48 draws water into the spray pipes and then sprays it onto the potatoes through the spray holes.

[0032] A potato washing method is also disclosed, based on the aforementioned potato washing device, comprising the following steps: S1: Spacing adjustment: The lifting roller brush assembly 12 is driven to move up and down by the lifting device to adjust the spacing between the lifting roller brush assembly 12 and the rotating roller 9 of the fixed roller brush assembly 11 so that the spacing is suitable for cleaning potatoes. S2: Cleaning operation, the translation device moves the support plate 13 out of the cleaning chamber 2, puts the potatoes to be cleaned into the cleaning chamber 2 of the main box 1 and places them above the rotating roller 9, starts the water spraying device to spray water onto the potatoes on the rotating roller 9, and at the same time starts the drive device to drive all the rotating rollers 9 to rotate. S3: Discharge after cleaning. After cleaning, the translation device moves the support plate 13 into the cleaning chamber 2. The lifting device readjusts the position of the rotating roller 9 of the lifting roller brush assembly 12 to widen the gap between adjacent rotating rollers 9, so that the potatoes fall through the gap to the support plate 13 below, and guide the potatoes to slide out of the discharge chute 3 along the support plate 13 to complete the discharge.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A potato cleaning apparatus, characterized in that, include: The main housing has an upward-facing cleaning chamber inside, and a discharge chute is provided on one side of the cleaning chamber. A plurality of roller brush assemblies, the roller brush assembly including a support frame, the support frame including two parallel rods and a fixed crossbar fixed between the two parallel rods, a rotating roller rotatably connected between the two parallel rods via a first rotating shaft, the outer wall of the rotating roller being provided with a brush, and the rotating roller being disposed in the cleaning chamber; The roller brush assembly includes a fixed roller brush assembly and a lifting roller brush assembly, which are arranged sequentially along the length of the cleaning chamber. The support frame of the fixed roller brush assembly is fixedly connected to the main body. A lifting device, which is used to drive the lifting roller brush assembly to move up and down; A support plate is disposed below the roller brush assembly and is inclined toward the discharge trough side; A translation device, used to move the support plate into or out of the cleaning chamber; A driving device that drives the rotating roller to rotate; A water spraying device sprays water onto the potatoes on the rotating roller.

2. A potato cleaning apparatus according to claim 1, characterised in that, The cleaning chamber has telescopic sliding grooves on opposite sides, and the two sides of the support plate are respectively inserted into the two telescopic sliding grooves. The cleaning chamber has a discharge groove on the side away from the discharge trough.

3. A potato cleaning apparatus as claimed in claim 2, characterised in that, The translation device includes a translation block, two connecting seats, an adjusting screw, and an adjusting motor. The translation block is fixed to the support plate and extends from one of the telescopic grooves. The translation block is provided with a telescopic threaded hole. The two connecting seats are fixed to the outer wall of the main housing. The adjusting screw is rotatably connected between the two connecting seats and is threadedly connected to the telescopic threaded hole. The adjusting motor is fixed to one of the connecting seats, and the rotating shaft of the adjusting motor is fixedly connected to one end of the adjusting screw.

4. A potato cleaning apparatus as claimed in claim 1, wherein One of the parallel rods of the support frame is provided with a driven mounting groove. A second pulley is rotatably connected to the driven mounting groove via a second rotating shaft. A first pulley is fixed to the first rotating shaft. A driven connecting belt is installed between the first pulley and the second pulley. A first bevel gear is fixed to one end of the second rotating shaft extending out of the driven mounting groove. A support protrusion is fixed to the parallel rod. A vertical shaft is rotatably connected to the support protrusion. A second bevel gear is fixed to the vertical shaft. The second bevel gear meshes with the first bevel gear. A downward-opening sliding groove is provided on the vertical shaft. A support plate is fixed on the outer wall of the main housing. A slide rod is inserted into the slide groove. A slide shaft is fixed at one end of the slide rod that extends out of the slide groove. The slide shaft is rotatably connected to the support plate. A third bevel gear is fixed on the slide shaft. The drive device includes two fixed seats, which are fixed to the outer wall of the main housing. A drive shaft is rotatably connected between the two fixed seats. A fourth bevel gear that meshes with the third bevel gear is fixed on the drive shaft. A drive motor is fixed on one of the fixed seats, and the shaft of the drive motor is fixedly connected to one end of the drive shaft.

5. A potato cleaning apparatus as claimed in claim 4, characterised in that, One end of the fixed crossbar is fixed to a connecting crossbar, and a lifting vertical bar is fixed to the connecting crossbar. The supporting crossbar is provided with a lifting groove corresponding to the lifting vertical bar, and the lifting vertical bar passes through the lifting groove. The lifting vertical rod of the fixed roller brush assembly is fixedly connected to the supporting horizontal plate, and the lifting vertical rod of the lifting roller brush assembly is slidably connected to the supporting horizontal plate. The lifting device is configured as a first electric push rod, which is fixed to the outside of the main housing. A push rod is fixed to the end of the push rod of the first electric push rod, and the push rod is fixedly connected to the lifting vertical rod of the lifting roller brush assembly.

6. A potato cleaning apparatus as claimed in claim 1, wherein, The cleaning chamber is equipped with a filter box, which contains a filter tank. The side wall of the filter box has a communication groove with the cleaning chamber. A filter plate is fixed in the communication groove. The chamber also includes a water pump, whose inlet is connected to the filter tank and whose outlet is connected to the water spraying device.

7. A potato cleaning apparatus as claimed in claim 6, characterised in that, The water spraying device is configured with several water spray pipes, each with a water spray hole on its side wall facing the rotating roller. The water spray pipes are fixed above the main housing, and the outlet of the water pump is connected to the water spray pipes.

8. A method of washing potatoes, characterized by The potato washing device described above includes the following steps: S1: Spacing adjustment: The lifting roller brush assembly is driven up and down by the lifting device to adjust the spacing between the rotating rollers of the lifting roller brush assembly and the fixed roller brush assembly so that the spacing is suitable for cleaning potatoes. S2: Cleaning operation. The translation device moves the support plate out of the cleaning chamber, puts the potatoes to be cleaned into the cleaning chamber of the main box and places them above the rotating rollers. The water spraying device is started to spray water onto the potatoes on the rotating rollers. At the same time, the drive device is started to drive all the rotating rollers to rotate. S3: Discharge after cleaning. After cleaning, the translation device moves the support plate into the cleaning chamber. The lifting device readjusts the position of the rotating roller of the lifting roller assembly, widening the gap between adjacent rotating rollers, so that the potatoes fall through the gap to the support plate below. The potatoes are then guided to slide out of the discharge chute along the support plate, completing the discharge.

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