Automatic rice polishing device
By designing the fan and water pump components, the problems of powder re-adhesion and electrostatic adhesion in traditional rice polishing devices have been solved, thereby improving the quality and efficiency of rice polishing and ensuring polishing consistency and operational flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional rice polishing equipment often results in powder re-adhesion during the removal of bran and pigments, leading to inconsistent polishing quality and static electricity adhesion of the rice, which affects both appearance and efficiency.
The design incorporates a fan and water pump assembly, utilizing airflow and water mist to remove powder and reduce static electricity. Combined with an adjustable roller tilt angle to promote rice flow and powder discharge, it ensures polishing consistency and efficiency.
It improves the quality and efficiency of rice polishing, prevents powder from re-adhering, ensures uniform rice distribution, and enhances polishing effect and operational flexibility.
Smart Images

Figure CN224072036U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a polishing device, and more particularly to an automatic rice polishing device. Background Technology
[0002] A rice polishing device is a mechanical device used to improve the appearance quality of rice. During rice processing, paddy rice is hulled to obtain brown rice, which still has bran and pigments attached to its surface. These substances affect the appearance and taste of the rice. Polishing removes the bran and pigments from the surface of the brown rice, making it whiter and shinier.
[0003] However, traditional rice polishing devices have a relatively simple structure. After the rice enters the polishing machine, it rubs against the polishing material (such as fine sand or a special polishing agent) under mechanical force, thereby removing surface bran and pigments. During the polishing process, the bran and other light powders on the rice surface are peeled off. If these powders are not effectively cleaned, they may re-adhere to the rice surface, seriously affecting the polishing quality and appearance of the rice. Furthermore, the rice is prone to static electricity during polishing, causing rice grains to adhere to each other or to the inner wall of the drum. This can cause localized accumulation, resulting in uneven distribution of rice within the drum and consequently inconsistent polishing results. Utility Model Content
[0004] To overcome the aforementioned shortcomings, the technical problem to be solved is to provide an automatic rice polishing device.
[0005] The technical implementation scheme of this utility model is as follows: an automatic rice polishing device, including a bracket, a cylinder, a lifting frame, a ring, a limiting shaft, a rotating frame, a roller, a polishing frame, a power component, a dust removal component, and a spraying component. A cylinder is installed on the right side of the bracket, and a lifting frame is slidably connected to the right side of the bracket. The cylinder's telescopic rod is connected to the bottom of the lifting frame. Rings are symmetrically connected to the top of the lifting frame, and a limiting shaft is slidably connected between the rings. A rotating frame is rotatably connected to the limiting shaft. A rotating frame is also rotatably connected to the top left side of the bracket. A roller is rotatably connected between the two rotating frames. A polishing frame is circumferentially connected to the inner wall of the roller. A power component is provided on the right rotating frame, and a dust removal component and a spraying component are provided at the right end of the roller.
[0006] As an improvement to the above scheme, the roller has an open structure at both ends and is initially tilted, i.e., the left is higher than the right.
[0007] As an improvement to the above solution, the polishing rack is made of stainless steel.
[0008] As an improvement to the above solution, the power assembly includes a motor, a gear ring, and a gear. The motor is mounted on the front side of the right rotating frame, and a gear is connected to the motor output shaft. The gear ring is connected to the right side of the drum, and the gear ring meshes with the gear.
[0009] As an improvement to the above solution, the dust removal component includes a fan and a filter screen. The filter screen is connected to the right port inside the drum, and the fan is installed at the right end of the drum, with the fan located to the right of the filter screen.
[0010] As an improvement to the above solution, it also includes a water pump, a water spray pipe and nozzles. The water pump is installed on the outer casing of the fan, and the water spray pipe is connected to the water pump. The water spray pipe passes into the inside of the roller, and multiple nozzles are evenly spaced on the outer wall of the water spray pipe.
[0011] Compared with the prior art, this utility model has the following advantages: 1. The airflow generated by the fan can blow the light powder generated during the polishing process from inside the drum to the opening and discharge it, preventing these powders from re-adhering to the surface of the rice. This not only improves the polishing quality of the rice, but also ensures the consistency of polishing.
[0012] 2. Water is pumped from the water source to spray water mist into the drum through the nozzle. This reduces static electricity and allows the rice to flow more freely in the drum, thereby improving polishing efficiency. An appropriate amount of water mist can also increase the friction between the rice and the polishing frame, making the polishing more thorough and further improving the polishing effect.
[0013] 3. By extending and retracting the cylinder telescopic rod, the tilt angle of the drum can be flexibly adjusted, making it convenient to collect rice inside the drum. In addition, the tilt angle of the drum can be adjusted according to different polishing needs, cleverly utilizing gravity to promote the flow of rice and the discharge of light powder, improving the flexibility and efficiency of operation. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is a three-dimensional structural diagram of the ring, limiting shaft, rotating frame, etc. of this utility model.
[0016] Figure 3 This is a three-dimensional structural diagram of the gear ring, water pump, fan, etc. of this utility model.
[0017] Figure 4 This is a three-dimensional structural diagram of the filter screen, water spray pipe, and nozzle of this utility model.
[0018] The parts and their numbers in the diagram are as follows: 1. Bracket, 2. Cylinder, 3. Lifting frame, 4. Ring, 5. Limiting shaft, 6. Rotating frame, 7. Motor, 8. Gear ring, 81. Gear, 9. Roller, 10. Polishing frame, 11. Water pump, 12. Fan, 13. Filter screen, 14. Water spray pipe, 15. Spray head. Detailed Implementation
[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0020] Example: An automatic rice polishing device, such as Figures 1-4 As shown, the assembly includes a bracket 1, a cylinder 2, a lifting frame 3, a ring 4, a limiting shaft 5, a rotating frame 6, a roller 9, a polishing frame 10, a power unit, a dust removal unit, and a spraying unit. The cylinder 2 is mounted on the right side of the bracket 1. The lifting frame 3 is slidably connected to the right side of the bracket 1. The telescopic rod of the cylinder 2 is connected to the bottom of the lifting frame 3. Rings 4 are symmetrically welded to the top of the lifting frame 3, and a limiting shaft 5 is slidably connected between the rings 4. A rotating frame 6 is rotatably connected to the limiting shaft 5. A rotating frame 6 is also rotatably connected to the top left side of the bracket 1. A roller 9 is rotatably connected between the two rotating frames 6. The roller 9 has open ends. The structure is initially tilted, with the left side higher than the right. A polishing frame 10 is connected to the inner wall of the roller 9 in a ring-like manner. A power component is installed on the right rotating frame 6. A dust removal component and a spray component are installed at the right end of the roller 9. The dust removal component is used to remove light powder inside the roller 9, and the spray component is used to spray an appropriate amount of water mist into the inside of the roller 9. The polishing frame 10 is made of stainless steel, which has high hardness and wear resistance, can withstand long-term friction and impact, extend the service life of the polishing frame 10, and has good corrosion resistance. Even in humid environments, it will not easily rust and is therefore unaffected by the spray component.
[0021] like Figure 3 As shown, the power assembly includes a motor 7, a gear ring 8, and a gear 81. The motor 7 is bolted to the front of the right rotating frame 6. The gear 81 is connected to the output shaft of the motor 7. The gear ring 8 is connected to the right side of the drum 9. The gear ring 8 meshes with the gear 81 to drive the drum 9 to rotate, thereby polishing the rice inside.
[0022] like Figures 3-4 As shown, the dust removal assembly includes a fan 12 and a filter screen 13. The filter screen 13 is connected to the right end of the drum 9. The fan 12 is installed on the right end of the drum 9 by bolts. The fan 12 is located to the right of the filter screen 13. When the fan 12 is started, it can blow air into the drum 9, while the filter screen 13 can block the rice inside the drum 9 and prevent the rice from falling out.
[0023] like Figures 3-4 As shown, it also includes a water pump 11, a water spray pipe 14, and nozzles 15. The water pump 11 is bolted to the outer casing of the blower 12. The water pump 11 is connected to the water spray pipe 14, which passes into the inside of the roller 9. Multiple nozzles 15 are evenly spaced on the outer wall of the water spray pipe 14. An external water pipe is connected to the water pump 11 to pump water into the water spray pipe 14, and then water mist is sprayed from the nozzles 15 into the inside of the roller 9.
[0024] When polishing rice, rice is added to the inside of drum 9, and then motor 7 is started. The output shaft of motor 7 rotates, driving gear 81 and gear ring 8 to rotate, which in turn drives drum 9 and polishing frame 10 to rotate, causing the rice inside drum 9 to tumble. The rice rubs against the polishing frame 10, effectively removing the chaff from the surface of the rice and achieving polishing. During the polishing process, fan 12 can be started to blow air into drum 9, blowing the light powder generated during the polishing process from inside drum 9 to the left port for discharge, preventing them from re-adhering to the rice surface. Water pump 11 can also be started. Initially, an external water pipe is connected to water pump 11, which pumps water to spray pipe 14, and then sprays water mist onto the rice through nozzle 15. An appropriate amount of water mist can reduce static electricity, making it easier for the rice to flow freely inside drum 9, improving polishing efficiency, and the water mist can also help the rice... The rice is more evenly distributed inside the drum 9, avoiding local accumulation and ensuring that each grain of rice is fully polished. After the rice is polished, the water pump 11, fan 12 and motor 7 are turned off. Then, cylinder 2 is started, and the telescopic rod of cylinder 2 is extended, driving the lifting frame 3 to move upward, which in turn drives the ring sleeve 4 to move upward. Through the ring sleeve 4, the limiting shaft 5 and the rotating frame 6 on the right side are pushed to rotate upward, so that the right end of the drum 9 is raised and the left end is lowered. The rotating frame 6 on the left side rotates accordingly, and the left end of the drum 9 faces downward, which facilitates the discharge and collection of the polished rice inside the drum 9. After collection, the telescopic rod of cylinder 2 is shortened and reset, driving the lifting frame 3 and ring sleeve 4 to move downward, pulling the limiting shaft 5 and the rotating frame 6 on the right side to move downward and rotate, so that the drum 9 returns to the state of left high and right low. The rotating frame 6 on the left side is correspondingly reversed and reset, and cylinder 2 is automatically turned off.
[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. An automatic rice polishing device, characterized in that: The utility model provides a polishing device, including support (1), cylinder (2), lifting frame (3), ring (4), limiting shaft (5), rotary frame (6), drum (9), polishing frame (10), power assembly, dust removal assembly and spray assembly, support (1) right side installs cylinder (2), support (1) right side slidingly connected with lifting frame (3), cylinder (2) telescopic rod is connected with the bottom of lifting frame (3), lifting frame (3) top symmetry is connected with ring (4), ring (4) between slidingly connected with limiting shaft (5), limiting shaft (5) is rotatably connected with rotary frame (6), support (1) top left side rotatably connected with rotary frame (6), and the drum (9) is rotatably connected between two rotary frames (6), and the inner wall of drum (9) is connected with polishing frame (10) around, right side rotary frame (6) is equipped with power assembly, and drum (9) right end is equipped with dust removal assembly and spray assembly.
2. The automatic rice polishing apparatus according to claim 1, wherein: The both ends of drum (9) are open structure, and it is inclined at the beginning, namely left high right low.
3. The automatic rice polishing apparatus according to claim 2, wherein: Polishing frame (10) is made of stainless steel.
4. The automatic rice polishing apparatus according to claim 3, wherein: Power assembly includes motor (7), gear ring (8) and gear (81), and right side rotary frame (6) front side is installed with motor (7), and the output shaft of motor (7) is connected with gear (81), and the right side of drum (9) is connected with gear ring (8), and gear ring (8) is engaged with gear (81).
5. The automatic rice polishing apparatus according to claim 4, wherein: Dust removal assembly includes fan (12) and filter screen (13), and the right end port in drum (9) is connected with filter screen (13), and the right end of drum (9) is installed with fan (12), and fan (12) is located at the right side of filter screen (13).
6. The automatic rice polishing apparatus according to claim 5, wherein: Also include water pump (11), water spray pipe (14) and spray head (15), and water pump (11) is installed on the shell of fan (12), and water pump (11) is connected with water spray pipe (14), and water spray pipe (14) penetrates into the inside of drum (9), and a plurality of spray heads (15) are evenly and interval connected on the outer wall of water spray pipe (14).