A rice polishing machine

By combining the outer and inner rollers and rotating them in opposite directions, the problems of uniformity and low efficiency in traditional rice polishing equipment are solved, thus improving the uniformity and efficiency of rice polishing and effectively controlling dust diffusion.

CN224475039UActive Publication Date: 2026-07-10DASHIQIAO HONGXI RICE IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DASHIQIAO HONGXI RICE IND CO LTD
Filing Date
2025-06-09
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional rice polishing equipment suffers from problems such as insufficient grinding uniformity, low polishing efficiency, and material accumulation, mainly due to unidirectional force and continuous feeding.

Method used

It adopts a combination of outer and inner roller structures, and through the mesh design of the outer sleeve and intermittent feeding, combined with the reverse rotation of the inner hollow polishing roller, it achieves uniform grinding and shearing effect of rice. It is equipped with a dust prevention and dust collection system to improve polishing efficiency.

Benefits of technology

It improves the uniformity and efficiency of rice polishing, avoids material accumulation, enhances polishing quality and production efficiency, and effectively controls dust diffusion.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224475039U_ABST
    Figure CN224475039U_ABST
Patent Text Reader

Abstract

The utility model discloses a rice's polishing machine, including base, be installed with the polishing box through the supporting leg on the base, be provided with the control panel on the supporting leg, the utility model relates to the technical field of polishing machine, and the rice to be polished enters the polishing box from the feed pipe place, and through power assembly work, makes the outer sleeve rotation, when the feed hole is aligned with the feed pipe, and the rice enters the outer sleeve, realizes intermittent feeding, avoids causing material accumulation, guarantees polishing homogeneity, and the internal cylinder structure and the mesh structure part of outer sleeve co -grind rice, and the rice is polished, and through the second motor work, through the shaft drive hollow polishing roller rotation, and multiple bosses make the rice close to the mesh structure part of outer sleeve, and the rice is ground and polished, and the hollow polishing roller and outer sleeve rotate in opposite directions, improve the shearing effect to the rice, improve the polishing efficiency, when the feed hole is aligned with the discharge pipe, and the rice that polishes is completed from the discharge device.
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Description

Technical Field

[0001] This utility model relates to the field of polishing machine technology, specifically a polishing machine for rice. Background Technology

[0002] In rice processing, polishing is a crucial step in improving the appearance and extending the shelf life of rice grains. Traditional polishing equipment often uses a working structure where only the internal polishing roller rotates. This rotation of the polishing roller results in unidirectional force on the rice grains, easily creating polishing dead corners, and leading to insufficient grinding uniformity and low polishing efficiency. Furthermore, traditional polishing equipment typically uses a continuous feeding method, which can easily cause material accumulation and affect polishing uniformity.

[0003] While existing technologies may already offer solutions to the aforementioned problems, this case aims to provide an alternative or replacement technical solution. Utility Model Content

[0004] To solve the problems mentioned in the background art, the present invention is achieved through the following technical solution: a rice polishing machine, including a base, a polishing box mounted on the base via support legs, a control panel provided on the support legs, an outer ring roller structure mounted on the polishing box, and an inner roller structure mounted on the polishing box and located inside the outer ring roller structure;

[0005] The outer ring roller structure includes an outer sleeve, one end of which is open and the other end is closed. The center of the outer sleeve has a mesh structure. Multiple material passage holes are provided on both sides of the outer sleeve. A feed pipe and a discharge pipe are respectively provided on the polishing box and on the material passage holes on both sides of the outer sleeve. A connecting ring frame is provided at the open end of the outer sleeve, and the connecting ring frame is movably inserted into the inner wall of the polishing box. An installation ring is provided at the closed end of the outer sleeve, and an external gear ring is fixedly fitted on the installation ring. A dustproof component is provided between the outer sleeve and the polishing box. A power component is movably engaged on the external gear ring.

[0006] Preferably, the dustproof assembly includes a ring plate, which is mounted on the outer sleeve, and a rotating sealing ring is installed between the ring plate and the polishing box.

[0007] Preferably, the power assembly includes a drive gear that meshes with an external gear ring. The polishing box has a through hole through which the drive gear passes. A first motor is mounted on the drive gear and is fixedly mounted on the outer wall of the polishing box. A protective cover is provided on the polishing box outside the drive gear and the first motor.

[0008] Preferably, the internal roller structure includes a rotating shaft, which is movably inserted into the polishing box. A hollow polishing roller is installed at one end of the rotating shaft inside the polishing box, and a second motor is installed at the other end of the rotating shaft outside the polishing box. The hollow polishing roller has multiple water passage holes and multiple protrusions.

[0009] Preferably, a water pipe is fixedly inserted into the polishing box, and multiple atomizing nozzles are provided on the water pipe. The hollow polishing roller and the outer sleeve are both movably mounted on the water pipe through bearings.

[0010] Preferably, the inner wall of the polishing box and the portion corresponding to the mesh structure of the outer sleeve are provided with thinning grooves.

[0011] Preferably, the polishing box is provided with a dust collection pipe, and a vacuum cleaner is installed at one end of the dust collection pipe.

[0012] Beneficial effects

[0013] This utility model provides a rice polishing machine, which has the following advantages compared with the prior art: The rice to be polished enters the polishing box through the feed pipe. The power component works to rotate the outer cylinder. When the feed hole is aligned with the feed pipe, the rice enters the outer cylinder, realizing intermittent feeding, avoiding material accumulation, and ensuring polishing uniformity. The internal roller structure and the mesh structure of the outer cylinder grind the rice together to polish it. The second motor works to drive the hollow polishing roller to rotate through the rotating shaft. Multiple protrusions bring the rice close to the mesh structure of the outer cylinder for grinding and polishing. The hollow polishing roller and the outer cylinder rotate in opposite directions, which improves the shearing effect on the rice and improves the polishing efficiency. When the feed hole is aligned with the discharge pipe, the polished rice is discharged from the discharge device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a rice polishing machine according to the present invention.

[0015] Figure 2 This is a partial three-dimensional structural diagram of a rice polishing machine according to the present invention.

[0016] Figure 3 This is a schematic diagram of the main cross-sectional structure of a rice polishing machine according to the present invention.

[0017] In the diagram: 1. Base, 2. Support leg, 3. Control panel, 4. Polishing box, 5. Outer sleeve, 6. Material passage hole, 7. Feed pipe, 8. Discharge pipe, 9. Connecting ring frame, 10. Mounting ring, 11. External gear ring, 12. Ring plate, 13. Rotating sealing ring, 14. Drive gear, 15. First motor, 16. Protective cover, 17. Rotating shaft, 18. Hollow polishing roller, 19. Water passage hole, 20. Protrusion, 21. Water pipe, 22. Atomizing nozzle, 23. Thinning groove, 24. Vacuum cleaner, 25. Second motor, 26. Dust collection pipe. Detailed Implementation

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example: Those skilled in the art shall connect all electrical components and their compatible power supplies in this case with wires, and select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence shall refer to the working principle described below, in which the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0020] Please see Figure 1-3 In order to solve the problems of traditional polishing equipment, which mostly adopts a working structure in which only the internal polishing roller rotates, resulting in unidirectional force on the rice grains and easy formation of polishing dead corners, as well as defects such as insufficient grinding uniformity and low polishing efficiency, and the fact that traditional polishing equipment usually adopts a continuous feeding method, which can easily cause material accumulation and affect polishing uniformity, this technical solution is designed. The detailed technical solution is as follows.

[0021] A rice polishing machine includes a base 1, a polishing box 4 mounted on the base 1 via support legs 2, a control panel 3 mounted on the support legs 2, an outer ring roller structure mounted on the polishing box 4, and an inner roller structure mounted on the polishing box 4 and located inside the outer ring roller structure.

[0022] It should be noted that the device is fixed at the target position by the base 1 and connected to the power supply. The control panel 3 has a built-in microcontroller. The microcontroller can be programmed with software. By writing the control program, the device can be controlled. Since this is existing technology, it will not be described in detail here.

[0023] Specifically, the outer ring roller structure includes an outer sleeve 5, one end of which is an open end and the other end of which is a closed end. The center of the outer sleeve 5 has a mesh structure. Multiple material passage holes 6 are provided on both sides of the outer sleeve 5. The polishing box 4 is provided with a feed pipe 7 and a discharge pipe 8 corresponding to the material passage holes 6 on both sides of the outer sleeve 5. A connecting ring frame 9 is provided at the open end of the outer sleeve 5. The connecting ring frame 9 is movably inserted into the inner wall of the polishing box 4. An installation ring 10 is provided at the closed end of the outer sleeve 5. An outer gear ring 11 is fixedly fitted on the installation ring 10. A dustproof component is provided between the outer sleeve 5 and the polishing box 4. A power component is movably engaged on the outer gear ring 11.

[0024] It should be noted that, through the operation of the power component, the outer sleeve 5 rotates inside the polishing box 4 via the connecting ring frame 9. The rice to be polished enters the polishing box 4 from the feed pipe 7. When the feed hole 6 is aligned with the feed pipe 7, the rice enters the outer sleeve 5, realizing intermittent feeding. The internal roller structure and the mesh structure of the outer sleeve 5 grind the rice together to polish it. When the feed hole 6 is aligned with the discharge pipe 8, the polished rice exits from the discharge device.

[0025] Specifically, the dustproof assembly includes a ring plate 12, which is mounted on the outer sleeve 5, and a rotating sealing ring 13 is installed between the ring plate 12 and the polishing box 4.

[0026] It should be noted that the dust generated during polishing spreads from the mesh structure of the outer sleeve 5, and the ring plate 12 and the rotating sealing ring 13 are used to prevent the dust from spreading to the outer toothed ring 11.

[0027] Specifically, the power assembly includes a drive gear 14, which meshes with an external gear ring 11. A through hole is provided on the polishing box 4, through which the drive gear 14 passes. A first motor 15 is mounted on the drive gear 14 and is fixedly mounted on the outer wall of the polishing box 4. A protective cover 16 is provided on the polishing box 4 and outside the drive gear 14 and the first motor 15.

[0028] It should be noted that the first motor 15 operates, causing the drive gear 14 to rotate. Under the connection of the mounting ring 10, the outer gear ring 11 and the outer sleeve 5 rotate. The protective cover 16 is used to protect the first motor 15 and the drive gear 14.

[0029] Specifically, the internal roller structure includes a rotating shaft 17, which is movably inserted into the polishing box 4. A hollow polishing roller 18 is installed at one end of the rotating shaft 17 inside the polishing box 4, and a second motor 25 is installed at the other end of the rotating shaft 17 outside the polishing box 4. The hollow polishing roller 18 has multiple water passage holes 19 and multiple protrusions 20.

[0030] It should be noted that the second motor 25 operates, and the hollow polishing roller 18 is driven to rotate through the rotating shaft 17. Multiple protrusions 20 bring the rice close to the mesh structure of the outer sleeve 5 to grind and polish the rice. The working direction of the second motor 25 is opposite to that of the hollow polishing roller 18 and the outer sleeve 5, which improves the shearing effect on the rice and improves the polishing efficiency.

[0031] Specifically, a water pipe 21 is fixedly inserted into the polishing box 4, and multiple atomizing nozzles 22 are provided on the water pipe 21. The hollow polishing roller 18 and the outer sleeve 5 are both movably mounted on the water pipe 21 through bearings.

[0032] It should be noted that one end of the water pipe 21 is connected to a water source. During polishing, water flows from the atomizing nozzle 22 through multiple water passages 19 onto the rice to cool the polished rice.

[0033] As a preferred and further option, a thinning groove 23 is provided on the inner wall of the polishing box 4 and at the part corresponding to the mesh structure of the outer sleeve 5, for dust to flow between the polishing box 4 and the outer sleeve 5.

[0034] As a preferred and further option, the polishing box 4 is provided with a dust collection pipe 26, and a vacuum cleaner 24 is installed at one end of the dust collection pipe 26. When the vacuum cleaner 24 works, the dust between the polishing box 4 and the outer casing 5 enters the dust collection pipe 26 and then enters the vacuum cleaner 24.

[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rice polishing machine, comprising a base (1), a polishing box (4) mounted on the base (1) via support legs (2), and a control panel (3) provided on the support legs (2), characterized in that, An outer ring roller structure is installed on the polishing box (4), and an inner roller structure is installed on the polishing box (4) and inside the outer ring roller structure; The outer ring roller structure includes an outer sleeve (5), one end of which is an open end and the other end of which is a closed end. The center of the outer sleeve (5) is a mesh structure. Multiple material passage holes (6) are provided on both sides of the outer sleeve (5). The polishing box (4) is provided with a feed pipe (7) and a discharge pipe (8) corresponding to the material passage holes (6) on both sides of the outer sleeve (5). A connecting ring frame (9) is provided at the open end of the outer sleeve (5). The connecting ring frame (9) is movably inserted into the inner wall of the polishing box (4). An installation ring (10) is provided at the closed end of the outer sleeve (5). An external gear ring (11) is fixedly fitted on the installation ring (10). A dustproof component is provided between the outer sleeve (5) and the polishing box (4). A power component is movably engaged on the external gear ring (11).

2. The rice polishing machine according to claim 1, characterized in that, The dustproof assembly includes a ring plate (12), which is mounted on the outer sleeve (5), and a rotating sealing ring (13) is installed between the ring plate (12) and the polishing box (4).

3. A rice polishing machine according to claim 1, characterized in that, The power assembly includes a drive gear (14), which meshes with an external gear ring (11). The polishing box (4) has a through hole through which the drive gear (14) passes. A first motor (15) is mounted on the drive gear (14). The first motor (15) is fixedly mounted on the outer wall of the polishing box (4). A protective cover (16) is provided on the polishing box (4) and outside the drive gear (14) and the first motor (15).

4. A rice polishing machine according to claim 1, characterized in that, The internal roller structure includes a rotating shaft (17), which is movably inserted into the polishing box (4). A hollow polishing roller (18) is installed at one end of the rotating shaft (17) inside the polishing box (4), and a second motor (25) is installed at the other end of the rotating shaft (17) outside the polishing box (4). The hollow polishing roller (18) has multiple water passage holes (19) and multiple protrusions (20).

5. A rice polishing machine according to claim 4, characterized in that, A water pipe (21) is fixedly inserted into the polishing box (4), and multiple atomizing nozzles (22) are provided on the water pipe (21). The hollow polishing roller (18) and the outer sleeve (5) are both movably mounted on the water pipe (21) through bearings.

6. A rice polishing machine according to claim 1, characterized in that, Thinning grooves (23) are provided on the inner wall of the polishing box (4) and at the corresponding part of the mesh structure of the outer sleeve (5).

7. A rice polishing machine according to claim 1, characterized in that, The polishing box (4) is equipped with a dust collection pipe (26), and a vacuum cleaner (24) is installed at one end of the dust collection pipe (26).