A potato screening device

Abstract

The application discloses a potato screening device, which comprises a main support, a screening barrel, a plurality of ring supports and a rotating device. The screening barrel is rotationally connected to the main support and is obliquely arranged. A screening cavity is arranged in the screening barrel and penetrates through both ends of the screening barrel. The screening cavity is divided into a plurality of screening sub-cavities from top to bottom. A plurality of screening holes are arranged on the side wall of each screening sub-cavity. The ring supports are connected to the main support and are arranged above the screening barrel. A plurality of extrusion structures are arranged on the ring supports. The extrusion structure comprises an extrusion rod. An extrusion slot corresponding to the extrusion structure is arranged on the ring support. The extrusion slot penetrates through both sides of the ring support. The extrusion rod penetrates through the corresponding extrusion slot. The extrusion end of the extrusion rod is inserted into or removed from the corresponding screening hole. The rotating device is used for driving the screening barrel to rotate relative to the main support. The extrusion rod is moved to the side of the potato, so that the potato is removed from the corresponding screening hole, thereby avoiding the potato from blocking the screening hole and affecting the screening.

Description

Technical Field

[0001] This invention belongs to the field of potato screening technology, and specifically relates to a potato screening device. Background Technology

[0002] The potato is a perennial herbaceous plant with edible tubers. It is the world's fourth most important food crop, after wheat, rice, and corn. Potatoes are also known as foreign yams, sweet potatoes, and other names. In some southern provinces, they are also called "winter potatoes" because they are often planted in winter after the autumn rice harvest. When selling or saving potatoes for seed, they are sorted according to size. This standardized management based on size maximizes economic benefits.

[0003] Patent CN216965261U discloses a screening device for potato processing. Potatoes are fed into a mesh drum. The output end of the support base rotates and drives the rotating shaft to rotate via a belt pulley. Finally, the mesh drum is rotated via a cross plate. The rotation of the mesh drum causes the potatoes inside to roll from right to left. Potatoes of different sizes are discharged through different apertures on the mesh drum. Finally, the screening is completed through the front side of the guide frame and the left side of the mesh drum.

[0004] However, when the above-mentioned device is used to screen potatoes, potatoes may get stuck in the mesh roller, affecting the screening process. Summary of the Invention

[0005] The purpose of this invention is to provide a potato sorting device that can remove stuck potatoes and ensure normal potato sorting.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a potato screening device, comprising: Main support; A screening bucket is rotatably connected to the main support. The screening bucket is tilted and has a screening cavity that extends through both ends of the screening bucket. The screening cavity is divided into several screening sub-cavities from top to bottom. Each screening sub-cavity has several screening holes on its side wall. The screening holes of the upper screening sub-cavities are smaller than the screening holes of the adjacent lower screening sub-cavities. A plurality of ring supports are connected to the main support and are positioned above the screening barrel. The ring supports are arranged sequentially along the axial direction of the screening barrel and are provided with a plurality of extrusion structures. The extrusion structure includes an extrusion rod, and the ring support is provided with an extrusion groove corresponding to the extrusion structure. The extrusion groove passes through both sides of the ring support, the extrusion rod passes through the corresponding extrusion groove, and the extrusion end of the extrusion rod is inserted into or removed from the corresponding screening hole. A rotating device is used to drive the screening bucket to rotate relative to the main support.

[0007] Furthermore, the extrusion structure also includes a reset plate and a reset spring. The inner wall of the extrusion groove is provided with a reset inner groove. The reset plate and the reset spring are installed in the reset inner groove. The reset plate is fixedly connected to the extrusion rod. The reset spring is sleeved on the extrusion rod. The reset spring is located between the inner wall of the reset inner groove on the side near the screening barrel and the reset plate.

[0008] Furthermore, it also includes a linkage ring and an extrusion lateral movement device that correspond one-to-one with the ring support. The end of the extrusion rod away from the screening barrel is hinged to an extrusion push rod, and the end of the extrusion push rod away from the extrusion rod is hinged to the linkage ring. The extrusion lateral movement device drives the linkage ring to move laterally.

[0009] Furthermore, the extrusion traverse device includes: Two fixing seats are fixed to the main support; A fixed shaft is fixed between the two fixed seats; A rotating screw is rotatably connected between the two fixed seats; A transverse plate corresponding to each of the linkage rings is provided with a transverse through hole and a transverse threaded hole. The fixed shaft passes through the transverse through hole, and the rotating screw is threadedly connected to the transverse threaded hole. The transverse plate is fixedly connected to the corresponding linkage ring. A drive motor is fixed on one of the fixed bases, and the shaft of the drive motor is fixedly connected to one end of the rotating screw.

[0010] Furthermore, each of the screening chambers has several sets of screening holes on its sidewall. Each set of screening holes is evenly distributed around the axis of the screening barrel. One ring support corresponds to one screening chamber, and the extrusion structure on the ring support corresponds to the screening hole located in the upper half.

[0011] Furthermore, a support rod is fixed inside the main bracket, and a support groove is provided on the ring bracket for the support rod to pass through. The support rod passes through the support groove, and the ring bracket is slidably connected to the support rod. One end of the ring bracket is provided with an abutment surface. A locking shaft is rotatably connected to the main bracket, and a locking cam is fixed on the locking shaft. A locking motor that drives the locking shaft to rotate is fixed on the main bracket. The locking cam has a locked state and an unlocked state. In the locked state, the outer wall of the locking cam abuts against the abutment surface. In the unlocked state, the locking cam does not contact the abutment surface.

[0012] Furthermore, the main support is provided with a screening channel corresponding to the screening chamber, and the inlet of the screening channel is located below the corresponding screening chamber.

[0013] Furthermore, the ring support is provided with a water inlet channel, which is connected to the reset inner groove in the ring support. The end of the extrusion rod near the screening barrel is provided with a cleaning hole. The side wall of the extrusion rod is provided with a side through groove. The cleaning hole is connected to the water inlet channel through the side through groove and the reset inner groove. A water inlet device is connected to the water inlet channel.

[0014] Furthermore, each of the screening chambers has several sets of screening holes on its sidewall. Each set of screening holes is evenly distributed around the axis of the screening barrel, and one ring support corresponds to one set of screening holes.

[0015] Furthermore, a feed hopper is fixed on the main support, and the outlet of the feed hopper is inserted into the upper part of the screening cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) When a potato is stuck in the screening hole, the screening bucket rotates the screening hole with the stuck potato to the top, aligns the extrusion rod with the corresponding potato, and then moves the extrusion rod to the side of the potato, thereby removing the potato from the corresponding screening hole, thus avoiding the potato blocking the screening hole and affecting the screening. (2) The extrusion lateral movement device can drive the linkage ring to move laterally. The linkage ring drives the extrusion rod to move out through the extrusion push rod, thereby realizing the movement of all the extrusion rods on the ring support through one linkage ring, making the control more convenient. (3) By locking and unlocking the ring support, the ring support can be moved laterally and the extrusion rod can be inserted into and removed from the screening hole. It can also be realized that one ring support corresponds to multiple sets of screening holes. (4) The water inlet device will draw water into the water inlet channel, and then the water will pass through the water inlet channel, the reset inner groove, and the side through groove in sequence before being sprayed out from the cleaning hole. When the screening is completed and the inside of the screening barrel needs to be cleaned, the extrusion rod is inserted into the corresponding screen hole, the water inlet device is turned on, and the water sprayed from the cleaning hole will rinse the inner wall of the screening barrel. The rinsing is very convenient and makes full use of the ring support and other structures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the potato screening device of the present invention; Figure 2 for Figure 1 A magnified view of a section at point I; Figure 3 for Figure 2 Top view; Figure 4 for Figure 3 Cross-sectional view at point AA; Figure 5 for Figure 4 Enlarged view of a section at point II; Figure 6 for Figure 1 The front view; Figure 7 for Figure 6 Cross-sectional view at point BB; Figure 8 for Figure 7 A magnified view of a section at point III; Figure 9 for Figure 1 A structural diagram showing the structure without the screening bucket; Figure 10 for Figure 1 A magnified view of a section at point IV in the middle; Figure 11 This is a schematic diagram of the ring support structure; Figure 12 This is a sectional view of the ring support; Figure 13 This is a schematic diagram of another embodiment of the potato screening device of the present invention.

[0018] In the diagram: 1. Main support; 2. Screening barrel; 3. Screening chamber; 4. Screening hole; 5. Ring support; 6. Extrusion structure; 7. Extrusion rod; 8. Extrusion groove; 9. Reset plate; 10. Reset spring; 11. Reset inner groove; 12. Linkage ring; 13. Extrusion transverse movement device; 14. Extrusion push rod; 15. Fixed seat; 16. Fixed shaft; 17. Rotating screw; 18. Transverse plate; 19. Transverse through hole; 20. Transverse threaded hole; 21. Screening channel; 22. Support rod; 23. Support through groove; 24. Abutment surface; 25. Locking shaft; 26. Locking cam; 27. Locking motor; 28. Water inlet channel; 29. ​​Cleaning hole; 30. Side through groove; 31. Drive motor; 32. Feed hopper; 33. Rotating device. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-13 This invention provides a technical solution for a potato screening device.

[0021] A potato sorting device, comprising: Main support 1; Screening barrel 2 is rotatably connected to main support 1. Screening barrel 2 is tilted. Screening chamber 3 is provided inside screening barrel 2, which passes through both ends of it. Screening chamber 3 is divided into several screening sub-chambers from top to bottom. Each screening sub-chamber has several screening holes 4 on its side wall. The screening holes 4 of the upper screening sub-chamber are smaller than the screening holes 4 of the adjacent lower screening sub-chamber. Several ring supports 5 are connected to the main support 1. The ring supports 5 are set above the screening barrel 2. The ring supports 5 are arranged sequentially along the axial direction of the screening barrel 2. Several extrusion structures 6 are provided on the ring supports 5. The extrusion structure 6 includes an extrusion rod 7. The ring support 5 is provided with an extrusion groove 8 corresponding to the extrusion structure 6. The extrusion groove 8 passes through both sides of the ring support 5. The extrusion rod 7 passes through the corresponding extrusion groove 8. The extrusion end of the extrusion rod 7 is inserted into or removed from the corresponding screening hole 4. Rotating device 33 is used to drive the screening bucket 2 to rotate relative to the main support 1.

[0022] The following is the operating procedure for the screening device: Step 1: Preparation and Loading No-load start: Start the rotating device and let the screening tank 2 run idle to check whether the equipment is running smoothly.

[0023] Uniform feeding: Pour the cleaned potatoes continuously and evenly from the higher end (feed inlet) of the screening bucket 2.

[0024] Step 2: Hierarchical screening and dynamic blocking This process involves material grading and anti-blocking actions occurring simultaneously. A. Grading and screening process (material flow) First stage (screening out the smallest potatoes): Potatoes enter the uppermost screening chamber. The screening holes 4 here are the smallest; only the smallest potatoes can pass through these holes and fall down, achieving the first stage of sorting.

[0025] Second stage (sifting out medium-sized potatoes): The remaining potatoes continue to the next screening chamber. The sieve openings here are larger than in the first stage, so medium-sized potatoes are sieved out.

[0026] Subsequent grading (screening out larger potatoes): The process continues, and the closer to the bottom of the drum, the larger the sieve holes, and the larger potatoes are screened out step by step.

[0027] B. Preventing process blockage When a potato gets stuck in the screening hole 4, the screening barrel 2 rotates the screening hole 4 with the stuck potato to the top, aligns the extrusion rod 7 with the corresponding potato, and then moves the extrusion rod 7 towards the potato side, thereby removing the potato from the corresponding screening hole 4, thus preventing the potato from blocking the screening hole 4 and affecting the screening. Then the screening barrel 2 continues to rotate and screen.

[0028] like Figure 5 and Figure 8 As shown, the extrusion structure 6 also includes a reset plate 9 and a reset spring 10. The inner wall of the extrusion groove 8 is provided with a reset inner groove 11. The reset plate 9 and the reset spring 10 are installed in the reset inner groove 11. The reset plate 9 is fixedly connected to the extrusion rod 7. The reset spring 10 is sleeved on the extrusion rod 7. The reset spring 10 is located between the inner wall of the reset inner groove 11 on the side near the screening barrel 2 and the reset plate 9.

[0029] When the return spring 10 is in its original length, there is a certain distance between the end of the extrusion rod 7 near the screening barrel 2 and the screening barrel 2, so as not to affect the rotation of the screening barrel 2. When it is necessary to expel the potato stuck in the screening hole 4, simply move the extrusion rod 7 toward the corresponding potato. At this time, the return spring 10 is in a compressed state. After the extrusion rod 7 moves the corresponding potato out of the screening hole 4, the return spring 10 drives the extrusion rod 7 to return to its original position, so as to prevent the extrusion rod 7 from affecting the rotation of the screening barrel 2.

[0030] To facilitate control of each extrusion rod 7, the screening device also includes a linkage ring 12 corresponding to the ring support 5 and an extrusion lateral movement device 13. The end of the extrusion rod 7 away from the screening barrel 2 is hinged to an extrusion push rod 14, and the end of the extrusion push rod 14 away from the extrusion rod 7 is hinged to the linkage ring 12. The extrusion lateral movement device 13 drives the linkage ring 12 to move laterally.

[0031] The extrusion lateral movement device 13 can drive the linkage ring 12 to move laterally. The linkage ring 12 drives the extrusion rod 7 to move out through the extrusion push rod 14, thereby realizing the movement of all the extrusion rods 7 on the ring support 5 through one linkage ring 12, making the control more convenient.

[0032] The following is one embodiment of the basic transverse movement device, wherein the extrusion transverse movement device 13 includes: Two fixing seats 15 are fixed on the main bracket 1; Fixed shaft 16, fixed between two fixed seats 15; Rotate screw 17, which is rotatably connected between two fixed seats 15; A transverse plate 18 is corresponding to the linkage ring 12. The transverse plate 18 is provided with a transverse through hole 19 and a transverse threaded hole 20. The fixed shaft 16 passes through the transverse through hole 19, and the rotating screw 17 is threadedly connected to the transverse threaded hole 20. The transverse plate 18 is fixedly connected to the corresponding linkage ring 12. The drive motor 31 is fixed on one of the fixed bases 15, and the rotating shaft of the drive motor 31 is fixedly connected to one end of the rotating screw 17.

[0033] The drive motor 31 drives the rotating screw 17 to rotate, which in turn drives the transverse plate 18 to move laterally, thereby causing the ring support 5 to move laterally. A single transverse device can simultaneously drive all the linkage rings 12 to move laterally, thus controlling the movement of all the extrusion rods 7.

[0034] Each screening chamber has several sets of screening holes 4 on its side wall. Each set of screening holes 4 is evenly distributed circumferentially around the axis of the screening barrel 2. One ring support 5 corresponds to one screening chamber, and the extrusion structure 6 on the ring support 5 corresponds to the screening holes 4 located in the upper half. For example... Figure 4 As shown, there are three screening chambers in total. Each screening chamber is equipped with two sets of screening holes 4, and each set of screening holes 4 corresponds to a ring support 5.

[0035] Furthermore, a support rod 22 is fixed inside the main bracket 1, and a support groove 23 is provided on the ring bracket 5 for the support rod 22 to pass through. The support rod 22 passes through the support groove 23, and the ring bracket 5 is slidably connected to the support rod 22. One end of the ring bracket 5 is provided with an abutment surface 24. A locking shaft 25 is rotatably connected to the main bracket 1, and a locking cam 26 is fixed on the locking shaft 25. A locking motor 27 that drives the locking shaft 25 to rotate is fixed on the main bracket 1. The locking cam 26 includes a locked state and an unlocked state. In the locked state, the outer wall of the locking cam 26 abuts against the abutment surface 24. In the unlocked state, the locking cam 26 does not contact the abutment surface 24.

[0036] During screening, the ring support 5 is aligned with one of the screening holes 4 in the corresponding screening chamber. It can be set to automatically use the extrusion rod 7 to extrude potatoes after the screening barrel 2 has been working for a certain period of time. For example, after working for 10 minutes, the screening barrel 2 stops rotating, the locking motor 27 drives the locking cam 26 to rotate, and the outer wall of the locking cam 26 abuts against the contact surface 24, locking the ring support 5. At this time, the ring support 5 will not move relative to the support rod 22. Then, the horizontal movement device drives all the extrusion rods 7 on the ring support 5 to move through the linkage ring 12. The extrusion rods 7 are inserted into the corresponding screening holes 4 to extrude potatoes. Then, the horizontal movement device drives the extrusion rods 7 to reset. Then, after the screening barrel 2 rotates 180 degrees, the extrusion rods 7 are inserted into the screening holes 4 that have rotated up from below to extrude potatoes. Then, the extrusion rods 7 are removed from the corresponding screening holes 4. At this time, the extrusion rods 7 have extruded potatoes into one set of screening holes 4. During this process, some screening holes 4 do not contain potatoes.

[0037] After the screening of a set of screening holes 4 in the upper screening chamber is completed, the locking motor 27 drives the locking cam 26 to rotate in the opposite direction. The locking cam 26 does not contact the abutment surface 24 and is in the unlocked state. At this time, the transverse movement device drives the linkage ring 12 to move laterally. The linkage ring 12 drives the ring bracket 5 to move to the outside of another set of screening holes 4 through the extrusion push rod 14 and the extrusion rod 7. Then, the locking motor 27 drives the locking cam 26 to rotate. The outer wall of the locking cam 26 abuts against the abutment surface 24, locking the ring bracket 5. Then, the potatoes in the set of screening holes 4 are extruded using the above method.

[0038] By locking and unlocking the ring support 5, the ring support 5 can move laterally and the extrusion rod 7 can be inserted into and removed from the screening hole 4. It can also be realized that one ring support 5 corresponds to multiple sets of screening holes 4.

[0039] like Figure 4 As shown, the main support 1 has a screening channel 21 corresponding to the screening chamber, and the inlet of the screening channel 21 is located below the corresponding screening chamber. The screening channel 21 can receive the screened potatoes and then output the potatoes.

[0040] The ring support 5 is provided with a water inlet channel 28, which is connected to the reset groove 11 in the ring support 5. The end of the extrusion rod 7 near the screening tank 2 is provided with a cleaning hole 29. The side wall of the extrusion rod 7 is provided with a side through groove 30. The cleaning hole 29 is connected to the water inlet channel 28 through the side through groove 30 and the reset groove 11. A water inlet device is connected to the water inlet channel 28.

[0041] The water inlet device draws water into the water inlet channel 28, and then the water passes sequentially through the water inlet channel 28, the reset inner groove 11, and the side through groove 30 before being sprayed out from the cleaning hole 29. When the screening is completed and the inside of the screening barrel 2 needs to be cleaned, the extrusion rod 7 is inserted into the corresponding screen hole, the water inlet device is turned on, and the water sprayed from the cleaning hole 29 washes the inner wall of the screening barrel 2. The rinsing is very convenient and makes full use of the ring support 5 and other structures. The water inlet device can be a water pump.

[0042] The rotating device 33 is existing technology, and its specific structure will not be described in detail.

[0043] Figure 13 This is a schematic diagram of another embodiment of the potato screening device. The difference from the above is that each screening chamber has several sets of screening holes 4 on its side wall. Each set of screening holes 4 is evenly distributed around the axis of the screening barrel 2. One ring support 5 corresponds to one set of screening holes 4, so the ring support 5 does not need to move.

[0044] A feed hopper 32 is fixed on the main support 1, and the outlet of the feed hopper 32 is inserted into the upper end of the screening chamber 3.

[0045] 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 sorting device, characterized in that, include: Main support; A screening bucket is rotatably connected to the main support. The screening bucket is tilted and has a screening cavity that extends through both ends of the screening bucket. The screening cavity is divided into several screening sub-cavities from top to bottom. Each screening sub-cavity has several screening holes on its side wall. The screening holes of the upper screening sub-cavities are smaller than the screening holes of the adjacent lower screening sub-cavities. A plurality of ring supports are connected to the main support and are positioned above the screening barrel. The ring supports are arranged sequentially along the axial direction of the screening barrel and are provided with a plurality of extrusion structures. The extrusion structure includes an extrusion rod, and the ring support is provided with an extrusion groove corresponding to the extrusion structure. The extrusion groove passes through both sides of the ring support, the extrusion rod passes through the corresponding extrusion groove, and the extrusion end of the extrusion rod is inserted into or removed from the corresponding screening hole. A rotating device is used to drive the screening bucket to rotate relative to the main support.

2. The potato screening device according to claim 1, characterized in that, The extrusion structure also includes a reset plate and a reset spring. The inner wall of the extrusion groove is provided with a reset inner groove. The reset plate and the reset spring are installed in the reset inner groove. The reset plate is fixedly connected to the extrusion rod. The reset spring is sleeved on the extrusion rod. The reset spring is located between the inner wall of the reset inner groove on the side near the screening barrel and the reset plate.

3. The potato screening device according to claim 2, characterized in that, It also includes a linkage ring and an extrusion lateral movement device that correspond one-to-one with the ring support. The end of the extrusion rod away from the screening barrel is hinged to an extrusion push rod, and the end of the extrusion push rod away from the extrusion rod is hinged to the linkage ring. The extrusion lateral movement device drives the linkage ring to move laterally.

4. The potato screening device according to claim 3, characterized in that, The extrusion traverse device includes: Two fixing seats are fixed to the main support; A fixed shaft is fixed between the two fixed seats; A rotating screw is rotatably connected between the two fixed seats; A transverse plate corresponding to each of the linkage rings is provided with a transverse through hole and a transverse threaded hole. The fixed shaft passes through the transverse through hole, and the rotating screw is threadedly connected to the transverse threaded hole. The transverse plate is fixedly connected to the corresponding linkage ring. A drive motor is fixed on one of the fixed bases, and the shaft of the drive motor is fixedly connected to one end of the rotating screw.

5. A potato screening device according to claim 4, characterized in that, Each of the screening chambers has several sets of screening holes on its sidewall. Each set of screening holes is evenly distributed around the axis of the screening barrel. One ring support corresponds to one screening chamber, and the extrusion structure on the ring support corresponds to the screening hole located in the upper half.

6. A potato screening device according to claim 5, characterized in that, A support rod is fixed inside the main bracket. The ring bracket has a support groove through which the support rod passes. The support rod passes through the support groove. The ring bracket is slidably connected to the support rod. One end of the ring bracket has an abutment surface. A locking shaft is rotatably connected to the main bracket. A locking cam is fixed on the locking shaft. A locking motor that drives the locking shaft to rotate is fixed on the main bracket. The locking cam has a locked state and an unlocked state. In the locked state, the outer wall of the locking cam abuts against the abutment surface. In the unlocked state, the locking cam does not contact the abutment surface.

7. A potato screening device according to claim 5, characterized in that, The main support is provided with a screening channel corresponding to the screening chamber, and the inlet of the screening channel is located below the corresponding screening chamber.

8. A potato screening device according to claim 7, characterized in that, The ring support is provided with a water inlet channel, which is connected to the reset groove in the ring support. The end of the extrusion rod near the screening barrel is provided with a cleaning hole. The side wall of the extrusion rod is provided with a side through groove. The cleaning hole is connected to the water inlet channel through the side through groove and the reset groove. A water inlet device is connected to the water inlet channel.

9. A potato screening device according to claim 4, characterized in that, Each of the screening chambers has several sets of screening holes on its sidewall. Each set of screening holes is evenly distributed around the axis of the screening barrel, and one ring support corresponds to one set of screening holes.

10. A potato screening device according to claim 1, characterized in that, A feed hopper is fixed on the main support, and the outlet of the feed hopper is inserted into the upper part of the screening chamber.

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