Rice fine peeling roller set device capable of controlling spacing
By using a servo motor-driven controllable spacing extrusion roller assembly and a splash-proof mechanism, the problem of adaptability to different rice grain sizes is solved, improving the quality and stability of rice peeling.
Patent Information
- Application Number
- CN202520680811.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2035-04-11
AI Technical Summary
The existing rice fine peeling roller assembly cannot adapt to different varieties and sizes of rice grains, resulting in poor peeling effect or damage to rice grains, which affects the quality of rice.
The system employs a combination of servo motors, lead screws, adjusting blocks, rotary motors, and gears to achieve controllable adjustment of the gap between the extrusion rollers. Combined with soft rubber rollers and a splash-proof mechanism, it ensures adaptability to peeling requirements and peeling stability for different rice grain sizes.
It enables flexible adjustment of the gap between the extrusion rollers according to the size of the rice grains, avoiding damage to the rice grains, ensuring peeling quality and stability, and preventing rice grains from splashing.
Smart Images

Figure CN224009879U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice processing technology, specifically to a rice fine peeling roller assembly device with controllable spacing. Background Technology
[0002] After rice matures and is harvested, it has a husk on its surface. The husk needs to be removed by a hulling machine before the rice grains can be further processed and made available for people to eat.
[0003] Existing rice fine peeling roller assembly devices use fixed rollers to rotate and squeeze the rice husk, then separate the husk from the rice grain to complete the peeling process. However, different varieties of rice have different grain sizes. Using rollers with fixed gaps cannot fully crush and peel small rice grains, and for large rice grains, squeezing with small gaps may damage the grains and affect the quality of the rice. Therefore, it is difficult to meet the requirements of peeling rice of different varieties and sizes.
[0004] Therefore, in view of this, we have studied and improved the existing structure to propose a rice fine peeling roller assembly device with controllable spacing. Utility Model Content
[0005] The purpose of this invention is to provide a rice fine peeling roller assembly device with controllable spacing to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a controllable spacing rice fine peeling roller assembly device, comprising a peeling machine, a servo motor fixedly mounted on the left side of the upper surface of the peeling machine, a lead screw mounted on the upper end of the servo motor, a guide rod fixedly mounted on the left side of the upper surface of the peeling machine in front of the servo motor, an adjusting block sleeved on the surface of the lead screw and the guide rod, a rotary motor fixedly mounted on the right side of the adjusting block, a shaft mounted on the right end of the rotary motor, a drive gear fixedly connected to the right end of the shaft, two movable rods rotatably connected to the surface of the shaft via bearings, driven gears rotatably connected to the upper right side of each movable rod via bearings, and connecting rods fixedly connected to the right side of each driven gear.
[0007] Preferably, the adjusting block is threadedly connected to the lead screw, and the adjusting block is slidably sleeved with the guide rod.
[0008] Preferably, all driven gears mesh with driving gears, and the right side of the connecting rod passes through the peeling machine and is located inside the peeling machine.
[0009] Preferably, each of the connecting rods has a compression roller fixedly connected to the center of its surface, and the compression roller is a soft rubber roller. A second slider is rotatably mounted on the right end of the connecting rod using a bearing, and a first slider is rotatably mounted on the left side of the connecting rod using a bearing.
[0010] Preferably, the peeling machine has a groove on the right side of its inner surface and a cavity on the left side of its surface, with slider one slidably disposed inside the cavity and slider two slidably disposed inside the groove.
[0011] Preferably, the peeling machine is equipped with a feeding hopper at its upper end, and the inner surface of the feeding hopper is equipped with a splash-proof mechanism.
[0012] Preferably, the splash-proof mechanism includes limiting plates fixedly installed on both the left and right sides of the inner surface of the feeding hopper, a tension spring fixedly installed on the lower surface of the limiting plate, and a movable plate fixedly installed at the lower end of the tension spring. The movable plate is rotatably connected inside the feeding hopper.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model utilizes a servo motor, lead screw, guide rod, adjusting block, rotary motor, shaft, driving gear, movable rod, driven gear, and connecting rod. The servo motor drives the lead screw to rotate. The adjusting block, limited by the guide rod, does not rotate with the lead screw but moves up and down due to the threaded thrust of the rotating lead screw. When the adjusting block moves upward, it drives the rotary motor, shaft, and driving gear to move upward. At this time, the shaft pushes the movable rod to extend to both sides, causing the driven gear to move forward and backward, which in turn drives the connecting rod to move back and forth, increasing the gap between the extrusion rollers. When the adjusting block moves down, the movable rod pulls the driven gear towards the center, which in turn moves the connecting rod towards the center, reducing the gap between the squeezing rollers. Regardless of how the driven gear moves, the synchronous adjustment of the driving gear ensures meshing transmission. This allows for flexible adjustment of the gap between the squeezing rollers according to the rice peeling requirements of different grain sizes, preventing situations where rice grains are too small to be fully squeezed for peeling, or rice grains are too large and over-squeezed, causing damage to the rice. This significantly improves the flexibility of rice peeling and ensures the quality of rice peeling.
[0015] 2. This utility model, through the design of an anti-splash mechanism, a limiting plate, a tension spring, and a movable plate, ensures that when rice is poured into the feeding hopper, the weight of the rice presses down on the movable plate, causing it to rotate downwards and open the feed inlet of the peeling machine for rice addition. After addition is complete, the tension spring pulls the movable plate up to form a horizontal state, blocking the feeding hopper. At this time, the upper surface of the movable plate is blocked by the limiting plate, preventing it from rotating upwards to open. This prevents the rice from flying out of the feeding hopper opening during the extrusion and peeling process, thus avoiding rice splashing through the feed inlet during the peeling process and ensuring stable rice peeling. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0017] Figure 2 This is a cross-sectional view of the peeling machine of this utility model;
[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0019] Figure 4 This is a schematic diagram of the extrusion roller structure of this utility model;
[0020] Figure 5 This is a cross-sectional view of the feeding hopper of this utility model.
[0021] In the diagram: 1. Peeling machine; 2. Servo motor; 3. Lead screw; 4. Guide rod; 5. Adjusting block; 6. Rotary motor; 7. Shaft; 8. Drive gear; 9. Movable rod; 10. Driven gear; 11. Connecting rod; 12. Extrusion roller; 13. Slider 1; 14. Slider 2; 15. Slide groove; 16. Through cavity; 17. Feeding hopper; 18. Anti-splash mechanism; 1801. Limiting plate; 1802. Tension spring; 1803. Movable plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figures 1-5As shown, a controllable spacing rice fine peeling roller assembly device includes a peeling machine 1. A servo motor 2 is fixedly installed on the left side of the upper surface of the peeling machine 1. A lead screw 3 is installed on the upper end of the servo motor 2. A guide rod 4 is fixedly installed on the left side of the upper surface of the peeling machine 1 in front of the servo motor 2. The same adjusting block 5 is sleeved on the surface of the lead screw 3 and the guide rod 4. A rotary motor 6 is fixedly installed on the right side of the surface of the adjusting block 5. A shaft 7 is installed on the right end of the rotary motor 6. A drive gear 8 is fixedly connected to the right end of the shaft 7. Two movable rods 9 are rotatably connected to the surface of the shaft 7 by bearings. A driven gear 10 is rotatably connected to the upper right side of each movable rod 9 by bearings. A connecting rod 11 is fixedly connected to the right side of each driven gear 10.
[0024] By adopting the above technical solution, when the adjusting block 5 moves upward, it will drive the rotary motor 6, shaft 7 and drive gear 8 to move upward. At this time, shaft 7 will push the movable rod 9 to expand to both sides, thereby causing the driven gear 10 to move forward and backward, and then drive the connecting rod 11 to move back and forth, increasing the gap between the extrusion rollers 12.
[0025] When the adjusting block 5 moves down, the movable rod 9 will pull the driven gear 10 toward the center, thereby causing the connecting rod 11 to move toward the center and reduce the gap between the extrusion rollers 12.
[0026] Furthermore, the adjusting block 5 is threadedly connected to the lead screw 3, and the adjusting block 5 is slidably sleeved with the guide rod 4.
[0027] By adopting the above technical solution, the servo motor 2 drives the lead screw 3 to rotate. Under the limit of the guide rod 4, the adjusting block 5 will not rotate with the lead screw 3, but will move up and down due to the thread thrust of the lead screw 3 when it rotates.
[0028] Furthermore, all driven gears 10 mesh with driving gears 8, and the right side of connecting rod 11 passes through peeling machine 1 and is located inside peeling machine 1.
[0029] By adopting the above technical solution, the rotary motor 6 can drive the drive gear 8 to rotate using the shaft 7. The drive gear 8 can mesh with the driven gear 10 to rotate, thereby causing the connecting rod 11 to rotate.
[0030] Furthermore, each of the connecting rods 11 has a pressing roller 12 fixedly connected to the middle of its surface, and the pressing roller 12 is a soft rubber roller. A second slider 14 is rotatably mounted on the right end of the connecting rod 11 using a bearing, and a first slider 13 is rotatably mounted on the left side of the connecting rod 11 using a bearing.
[0031] By adopting the above technical solution, the rotation of the connecting rod 11 will drive the squeezing roller 12 to rotate, thereby using the squeezing roller 12 to squeeze and remove the husk from the rice.
[0032] The soft rubber roller's extrusion roller 12 can extrude and remove the crispy rice skin without damaging the hard rice.
[0033] Furthermore, a groove 15 is provided on the right side of the inner surface of the peeling machine 1, and a cavity 16 is provided on the left side of the surface of the peeling machine 1. Slider 13 is slidably disposed inside the cavity 16, and slider 2 14 is slidably disposed inside the groove 15.
[0034] By adopting the above technical solution, slider 13 and slider 2 14 slide inside the through cavity 16 and the slide groove 15, which can ensure that the connecting rod 11 moves back and forth stably, and avoid the driven gear 10 moving up and down when the movable rod 9 is pushed and pulled up and down.
[0035] Furthermore, a feeding hopper 17 is installed at the upper end of the peeling machine 1, and a splash-proof mechanism 18 is installed on the inner surface of the feeding hopper 17.
[0036] By adopting the above technical solution, rice can be added into the peeling machine 1 using the feeding hopper 17.
[0037] Furthermore, the splash prevention mechanism 18 includes limiting plates 1801 fixedly installed on both the left and right sides of the inner surface of the feeding hopper 17. A tension spring 1802 is fixedly installed on the lower surface of the limiting plate 1801, and a movable plate 1803 is fixedly installed at the lower end of the tension spring 1802. The movable plate 1803 is located inside the feeding hopper 17 and is rotatably connected.
[0038] By adopting the above technical solution, the weight of the rice will press down on the movable plate 1803 to rotate downwards, thereby opening the feed port of the peeling machine 1 to add rice.
[0039] After the addition is completed, the tension spring 1802 will pull up the movable plate 1803 to form a horizontal state to block the feeding hopper 17. At this time, the upper surface of the movable plate 1803 is blocked by the limiting plate 1801, so it cannot rotate upward to open, so that the rice cannot fly out through the opening of the feeding hopper 17 when it is squeezed and peeled.
[0040] Working principle: When using this controllable spacing rice fine peeling roller assembly, firstly, when rice is poured into the feeding hopper 17, the weight of the rice will press down on the movable plate 1803 to rotate downwards, thereby opening the feed inlet of the peeling machine 1 for rice addition. After addition, the tension spring 1802 will pull up the movable plate 1803 to form a horizontal state to block the feeding hopper 17. At this time, the upper surface of the movable plate 1803 is blocked by the limiting plate 1801, so it cannot rotate upwards to open, preventing the rice from flying out through the opening of the feeding hopper 17 during the extrusion and peeling process. Then, according to the size of the rice particles, the servo motor 2 is started to drive the lead screw 3 to rotate. Under the limit of the guide rod 4, the adjusting block 5 will not follow the rotation of the lead screw 3, but will move up and down due to the thread thrust of the lead screw 3 when it rotates. When the roller moves upward, it drives the rotary motor 6, shaft 7, and drive gear 8 to move upward. At this time, shaft 7 pushes the movable rod 9 to expand to both sides, thereby causing the driven gear 10 to move forward and backward, which in turn drives the connecting rod 11 to move back and forth, increasing the gap between the extrusion rollers 12. When the adjusting block 5 moves downward, it uses the movable rod 9 to pull the driven gear 10 closer to the center, thereby causing the connecting rod 11 to move closer to the center, reducing the gap between the extrusion rollers 12. After the gap between the extrusion rollers 12 is adjusted to a suitable size, the rotary motor 6 can be started. The rotary motor 6 drives the drive gear 8 to rotate through shaft 7. The drive gear 8 meshes with the two driven gears 10 to rotate, causing the connecting rod 11 to drive the extrusion rollers 12 to rotate, performing the extrusion and peeling work on the rice. This is the working principle of the controllable spacing rice fine peeling roller group device.
Claims
1. A controllable spacing rice fine peeling roller assembly device, comprising a peeling machine (1), characterized in that, A servo motor (2) is fixedly installed on the left side of the upper surface of the peeling machine (1). A lead screw (3) is installed on the upper end of the servo motor (2). A guide rod (4) is fixedly installed on the left side of the upper surface of the peeling machine (1) in front of the servo motor (2). The same adjusting block (5) is sleeved on the surface of the lead screw (3) and the guide rod (4). A rotary motor (6) is fixedly installed on the right side of the surface of the adjusting block (5). A shaft (7) is installed on the right end of the rotary motor (6). A drive gear (8) is fixedly connected to the right end of the shaft (7). Two movable rods (9) are rotatably connected to the surface of the shaft (7) by bearings. A driven gear (10) is rotatably connected to the upper right side of each movable rod (9) by bearings. A connecting rod (11) is fixedly connected to the right side of each driven gear (10).
2. The rice fine peeling roller assembly device with controllable spacing according to claim 1, characterized in that, The adjusting block (5) is threadedly connected to the lead screw (3), and the adjusting block (5) is slidably sleeved with the guide rod (4).
3. The rice fine peeling roller assembly device with controllable spacing according to claim 1, characterized in that, The driven gears (10) mesh with the driving gears (8), and the right side of the connecting rod (11) passes through the peeling machine (1) and is located inside the peeling machine (1).
4. The rice fine peeling roller assembly device with controllable spacing according to claim 1, characterized in that, Each of the connecting rods (11) is fixedly connected to a squeezing roller (12) in the middle of its surface. The squeezing roller (12) is a soft rubber roller. A second slider (14) is rotatably mounted on the right end of the connecting rod (11) using a bearing. A first slider (13) is rotatably mounted on the left side of the surface of the connecting rod (11) using a bearing.
5. The rice fine peeling roller assembly device with controllable spacing according to claim 1, characterized in that, The peeling machine (1) has a groove (15) on the right side of its inner surface and a cavity (16) on the left side of its surface. Slider 1 (13) is slidably disposed inside the cavity (16) and slider 2 (14) is slidably disposed inside the groove (15).
6. The rice fine peeling roller assembly device with controllable spacing according to claim 1, characterized in that, The peeling machine (1) is equipped with a feeding hopper (17) at its upper end, and a splash-proof mechanism (18) is installed on the inner surface of the feeding hopper (17).
7. The rice fine peeling roller assembly device with controllable spacing according to claim 6, characterized in that, The splash-proof mechanism (18) includes a limit plate (1801) fixedly installed on both the left and right sides of the inner surface of the feeding hopper (17). A tension spring (1802) is fixedly installed on the lower surface of the limit plate (1801). A movable plate (1803) is fixedly installed at the lower end of the tension spring (1802). The movable plate (1803) is rotatably connected inside the feeding hopper (17).