A rice mill with sand roller

Abstract

The application relates to the technical field of rice processing equipment, and discloses a sand roller rice mill, which comprises a machine body, a processing bin is arranged in the machine body, a motor is fixedly connected to the outer wall of the processing bin, a driving pulley is fixedly arranged at the output end of the motor, a first belt is arranged on the outer wall of the driving pulley, a first driven pulley is arranged on the outer wall of the first belt, a sand roller body is fixedly connected to the outer wall of the first driven pulley, the outer wall of the sand roller body is rotationally connected to the inside of the processing bin, a gear is fixedly connected to the outer wall of the sand roller body, and a grid is fixedly connected to the inside of the processing bin. The motor drives the two groups of sand roller bodies to rotate towards each other through the belts and pulleys, so that the rice can be effectively rolled, rubbed and peeled; the cleaning brush can clean the surface of the sand roller body in time, prevents the sand roller body from being stacked, the discharging assembly can orderly and quantitatively feed, the rice in the processing bin is prevented from being excessively stacked or insufficiently stacked, and the husking efficiency is ensured.

Description

Technical Field

[0001] This invention relates to the field of rice processing equipment technology, specifically a sand roller rice milling machine. Background Technology

[0002] In grain processing, the sand roller rice mill is a core piece of equipment for dehulling paddy rice. Its main function is to use the mechanical action of sand rollers to crush and rub the paddy rice, removing the outer husk and separating the rice grains. This provides the basic raw material for subsequent grain refining. It is widely used in grain processing plants, small and medium-sized farms, and grain purchasing points, and is one of the key pieces of equipment ensuring the transformation of paddy rice into edible rice grains. With the development of large-scale agricultural production, the demand for paddy rice processing efficiency and quality is constantly increasing. The performance of the sand roller rice mill directly affects the processing capacity and the quality of the finished rice. Therefore, the requirements for the equipment's dehulling effect, feeding stability, and processing continuity are becoming increasingly stringent.

[0003] However, existing rice milling machines with sand rollers suffer from unstable rice peeling efficiency and incomplete peeling in practical applications. On the one hand, the feeding structure of some machines makes it difficult to achieve orderly and quantitative feeding, which can easily lead to excessive accumulation of rice in the processing bin, causing the sand rollers to jam and increasing power consumption, or insufficient feeding, causing the sand rollers to idle and reducing peeling efficiency. On the other hand, rice husks easily stick to the surface of the sand rollers during long-term operation. If not cleaned in time, this can reduce the friction coefficient of the sand rollers, affecting the subsequent rice peeling effect. At the same time, some machines lack an effective screening and reflux structure, so unpeeled rice cannot re-enter the peeling process and is directly discharged with the peeled rice grains, resulting in a higher proportion of unpeeled rice in the finished product. This requires additional secondary processing, increasing processing costs and time costs, and making it difficult to meet the demand for efficient and high-quality rice processing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sand roller rice milling machine that solves the problems of unstable rice peeling efficiency and incomplete peeling in existing sand roller rice milling machines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sand roller rice milling machine, comprising a machine body, a processing chamber disposed inside the machine body, a motor fixedly connected to the outer wall of the processing chamber, a drive pulley fixedly disposed at the output end of the motor, a first belt disposed on the outer wall of the drive pulley, a first driven pulley disposed on the outer wall of the first belt, a sand roller body fixedly connected to the outer wall of the first driven pulley, the outer wall of the sand roller body rotatably connected to the inside of the processing chamber, a gear fixedly connected to the outer wall of the sand roller body, a grid fixedly connected to the inside of the processing chamber, a cleaning brush fixedly connected to the outer wall of the grid, the outer wall of the sand roller body slidably connected to the outer wall of the cleaning brush, a feeding chamber disposed inside the machine body, a first dampening plate fixedly connected to the inside of the feeding chamber, the feeding chamber being located below the processing chamber, and a feeding assembly disposed on the upper surface of the processing chamber.

[0006] By adopting the above technical solution: the motor drives two sets of sand rollers to rotate in opposite directions through belts and pulleys, which can effectively crush and hull the rice; the cleaning brush can clean the rice husks on the surface of the sand rollers in time to prevent accumulation from affecting the hulling effect; the grid can screen and separate the hulled rice grains from the unhulled rice grains; the unhulled rice grains can be hulled again under the action of airflow to ensure that the rice is hulled thoroughly; at the same time, the feeding component can supply material in an orderly and quantitative manner to avoid too much or too little rice accumulation in the processing bin and ensure hulling efficiency.

[0007] Preferably, the feeding assembly includes a support frame, the outer wall of which is fixedly connected to the upper surface of the processing chamber, a feeding hopper is fixedly connected to the inside of the processing chamber, a storage hopper is fixedly connected to the inside of the support frame, and a feeding cylinder is rotatably connected through the inside of the support frame.

[0008] Preferably, the outer wall of the feeding cylinder is rotatably connected to the outer wall of the storage bin, and a third driven pulley is fixedly connected to the outer wall of the feeding cylinder, with a second belt provided on the outer wall of the third driven pulley.

[0009] Preferably, the outer wall of the second belt is provided with a second driven pulley, the outer wall of the second driven pulley is fixedly connected to the outer wall of the first driven pulley, the outer wall of the second driven pulley is provided with a third belt, and the outer wall of the third belt is provided with a pulley.

[0010] Preferably, a fan blade is fixedly connected to the outer wall of the pulley, and the outer wall of the fan blade is rotatably connected to the inside of the machine body.

[0011] Preferably, the interior of the machine body is provided with a separation chamber and an air chamber, the outer wall of the separation chamber is fixedly connected to the outer wall of the air chamber, and the outer wall of the air chamber is fixedly connected to an air outlet pipe.

[0012] Preferably, the outer wall of the feeding hopper is fixedly connected to the outer wall of the separation hopper, the interior of the separation hopper is provided with a second lubricating plate, and the outer wall of the separation hopper is provided with an observation window.

[0013] Preferably, a limiting frame is fixedly connected to the outer wall of the separation chamber, a positioning screw is slidably connected inside the limiting frame, and an L-shaped rod is threadedly connected to the outer wall of the positioning screw.

[0014] Preferably, the outer wall of the L-shaped rod is slidably connected to the outer wall of the limiting frame, a guide plate is fixedly connected to the outer wall of the L-shaped rod, and the outer wall of the guide plate is rotatably connected to the inside of the fan blade.

[0015] Preferably, a protective shell is fixedly connected to the outer wall of the machine body, and the outer walls of the driving pulley, the second driven pulley, the first driven pulley and the gear are all disposed inside the protective shell.

[0016] Working principle: After the sand roller rice milling machine is started, the motor drives the drive pulley to rotate. The drive pulley drives the first driven pulley to rotate through the first belt, which in turn drives the sand roller body in the processing chamber to rotate. At the same time, the sand roller body is driven by gears to make the two sets of sand roller bodies rotate in opposite directions, providing power for rice peeling.

[0017] The rice in the storage bin needs to be transported to the processing bin by the feeding assembly: the first driven pulley drives the coaxial second driven pulley to rotate synchronously, the second driven pulley drives the third driven pulley to rotate through the second belt, and then drives the feeding cylinder in the support frame to rotate; during the rotation of the feeding cylinder, the rice in the storage bin is discharged in an orderly and quantitative manner and fed onto the two sets of opposing rotating sand roller bodies through the feeding hopper.

[0018] The rice grains are peeled by the crushing and friction of the sand roller body. The cleaning brush in the processing chamber continuously cleans the surface of the rice grains as the sand roller body rotates to prevent the rice husks from sticking together. The peeled mixture falls onto the grid. The peeled rice grains pass through the grid gaps and fall onto the first damping plate of the feeding chamber below. The unpeeled rice grains are intercepted by the grid and return to the sand roller for peeling again under the action of the airflow generated by the rotation of the sand roller body.

[0019] Subsequently, the first lubricating plate guides the mixture of rice grains and residual husks into the separation chamber. Simultaneously, the second driven pulley drives the pulley to rotate via the third belt, causing the fan blades to rotate within the air chamber and generate airflow. The second lubricating plate in the separation chamber guides the mixture to contact the airflow evenly. The husks are carried out of the air outlet pipe by the airflow, while the rice grains fall to the bottom of the separation chamber, completing the separation. During the process, the separation status can be observed through the observation window. Pulling the L-shaped rod adjusts the degree of closure of the guide plate to optimize the separation effect. After adjustment, the positioning screws are tightened to fix the position of the guide plate. The protective shell protects all transmission components throughout the process, ensuring stable and safe operation of the equipment.

[0020] This invention provides a sand roller rice milling machine. It has the following beneficial effects:

[0021] 1. In this invention, the motor drives two sets of sand rollers to rotate in opposite directions via belts and pulleys, which can effectively crush and hull the rice. The cleaning brush can clean the rice husks on the surface of the sand rollers in time to prevent accumulation from affecting the hulling effect. The grid can screen and separate the hulled rice grains from the unhulled rice grains. The unhulled rice grains can be hulled again under the action of airflow to ensure that the rice is hulled thoroughly. At the same time, the feeding component can supply material in an orderly and quantitative manner to avoid too much or too little rice accumulation in the processing chamber and ensure the hulling efficiency.

[0022] 2. In this invention, the rice husk separation effect is controllable and the equipment is safe to use. The power transmission structure drives the fan blades to rotate and generate airflow. With the guidance of the second lubricating plate, the rice grains and rice husks can be effectively separated. The observation window makes it easy to check the separation status in real time. The separation effect can be optimized by adjusting the degree of closure of the guide plate. The positioning screw can fix the position of the guide plate to ensure the stability of the separation.

[0023] 3. In this invention, the first driven pulley drives the third driven pulley to rotate via the second belt. Then, the third driven pulley drives the feeding cylinder to rotate in the support frame. When the feeding cylinder rotates, it can orderly and quantitatively discharge the grain in the storage bin. The grain is fed into the processing bin through the feeding hopper, thereby achieving the effect of controlling the feeding amount and preventing the rice in the processing bin from accumulating too much or too little, ensuring that the sand roller body can efficiently dehull the rice. Attached Figure Description

[0024] Figure 1 This is a perspective view of a sand roller rice milling machine according to the present invention;

[0025] Figure 2 This is a schematic diagram of the protective casing of a sand roller rice milling machine according to the present invention;

[0026] Figure 3 This is a schematic diagram of the first driven pulley of a sand roller rice milling machine according to the present invention;

[0027] Figure 4 This is a schematic diagram of the first moistening plate of a sand roller rice milling machine according to the present invention;

[0028] Figure 5 This is a schematic diagram of the feeding hopper of a sand roller rice milling machine according to the present invention;

[0029] Figure 6 This is a schematic diagram of the sand roller body of a sand roller rice milling machine according to the present invention;

[0030] Figure 7 This is a schematic diagram of a cleaning brush for a sand roller rice milling machine according to the present invention;

[0031] Figure 8 This is a schematic diagram of the feeding cylinder of a sand roller rice milling machine according to the present invention;

[0032] Figure 9 This is a schematic diagram of the separation chamber of a sand roller rice milling machine according to the present invention;

[0033] Figure 10 This is a schematic diagram of the fan blades of a sand roller rice milling machine according to the present invention.

[0034] The components are as follows: 1. Machine body; 2. Processing chamber; 3. Motor; 4. Drive pulley; 5. First belt; 6. Second driven pulley; 7. First driven pulley; 8. Sand roller body; 9. Grille; 10. Cleaning brush; 11. Gear; 12. Feeding bin; 13. First lubricating plate; 14. Second belt; 15. Third driven pulley; 16. Feeding cylinder; 17. Support frame; 18. Storage bin; 19. Third belt; 20. Pulley; 21. Fan blade; 22. Separation chamber; 23. Observation window; 24. Limiting frame; 25. L-shaped rod; 26. Positioning screw; 27. Guide plate; 28. Second lubricating plate; 29. ​​Air outlet pipe; 30. Air chamber; 31. Protective shell; 32. Feeding hopper. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0036] Please see the appendix Figure 1 -Appendix Figure 7 This invention provides a sand roller rice milling machine, including a machine body 1. A processing chamber 2 is provided inside the machine body 1. A motor 3 is fixedly connected to the outer wall of the processing chamber 2. A drive pulley 4 is fixedly provided at the output end of the motor 3. A first belt 5 is provided on the outer wall of the drive pulley 4. A first driven pulley 7 is provided on the outer wall of the first belt 5. A sand roller body 8 is fixedly connected to the outer wall of the first driven pulley 7. The outer wall of the sand roller body 8 is rotatably connected to the inside of the processing chamber 2. A gear 11 is fixedly connected to the outer wall of the sand roller body 8. A grid 9 is fixedly connected to the inside of the processing chamber 2. A cleaning brush 10 is fixedly connected to the outer wall of the grid 9. The outer wall of the sand roller body 8 is slidably connected to the outer wall of the cleaning brush 10. A feeding chamber 12 is provided inside the machine body 1. A first dampening plate 13 is fixedly connected to the inside of the feeding chamber 12. The feeding chamber 12 is located below the processing chamber 2. A feeding assembly is provided on the upper surface of the processing chamber 2.

[0037] Specifically, the machine body 1 serves as the overall support structure, supporting and fixing the processing chamber 2, the feeding chamber 12, the separation chamber 22, and the feeding hopper 32, thus providing a stable installation foundation for the entire equipment and ensuring that the components do not shake or shift during operation, ensuring stable and smooth overall operation. The processing chamber 2 supports and fixes the motor 3, allowing the motor 3 to remain stable during high-speed operation and preventing positional shift due to vibration, thereby ensuring the continuity and stability of the motor 3's output power. The motor 3 drives the drive pulley 4 to rotate, and the rotation of the drive pulley 4, through the transmission of the first belt 5, drives the first driven pulley 7 to rotate, thus providing power for the operation of the sand roller body 8. The first driven pulley 7 drives the sand roller body 8 to rotate in the processing chamber 2. The sand roller body 8 drives the other sand roller body 8 to rotate synchronously through the gear 11. The linkage gear 11 on the two sand roller bodies 8 has different numbers of teeth, thus creating a certain speed difference between the two rollers. When they move towards each other... During rotation, the high-speed roller exerts a strong traction and conveying effect on the grain, while the low-speed roller creates a relative resistance effect. The speed difference between the two rollers subjects the grain to continuous shearing and kneading forces, effectively removing the rice bran. Simultaneously, the abrasive on the surface of the sand roller body 8 further refines and polishes the rice grains. Within the grinding area formed by the two rollers, the rice is simultaneously subjected to compression, shearing, and friction, ultimately achieving efficient and uniform peeling. The cleaning brush 10 fixed on the grid 9 cleans the surface of the sand roller body 8. During the rotation of the sand roller body 8, the cleaning brush 10 can promptly remove the rice husks adhering to its surface, thereby preventing the accumulation of rice husks from affecting the peeling effect; the grid 9 plays a screening and separation role, and the successfully peeled rice grains can fall through the gaps of the grid 9 onto the first dampening plate 13 in the feeding bin 12, while the unpeeled rice grains will be intercepted by the grid 9. Under the airflow generated by the rotation of the sand roller body 8, the unpeeled rice grains will be sent back to the sand roller body 8, thereby achieving the effect of peeling again and ensuring the thoroughness of rice peeling;

[0038] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 8 The feeding assembly includes a support frame 17, the outer wall of which is fixedly connected to the upper surface of the processing chamber 2. A feeding hopper 32 is fixedly connected inside the processing chamber 2. A storage chamber 18 is fixedly connected inside the support frame 17. A feeding cylinder 16 is rotatably connected through the inside of the support frame 17. The outer wall of the feeding cylinder 16 is rotatably connected to the outer wall of the storage chamber 18. A third driven pulley 15 is fixedly connected to the outer wall of the feeding cylinder 16. A second belt 14 is provided on the outer wall of the third driven pulley 15.

[0039] Specifically, the first driven pulley 7 supports and limits the second driven pulley 6, ensuring synchronous rotation between them and guaranteeing continuous power transmission. The second belt 14 connects the second driven pulley 6 and the third driven pulley 15, transmitting power from the second driven pulley 6 to the third driven pulley 15, thus driving the third driven pulley 15 to rotate. The third driven pulley 15 drives the feeding cylinder 16 to rotate within the support frame 17, providing power for the feeding process. The support frame 17 supports and limits the feeding cylinder 16, ensuring smooth feeding. The cylinder 16 will not deviate or shake during rotation, thus ensuring the stability of the feeding process. The storage bin 18 serves to store rice grains, continuously supplying the feeding cylinder 16 and avoiding frequent feeding that could affect processing efficiency. When the feeding cylinder 16 rotates, it helps to orderly and quantitatively discharge the rice grains from the storage bin 18. The rice grains are then fed into the processing bin 2 through the feeding hopper 32, thereby controlling the feeding amount and preventing excessive or insufficient accumulation of rice grains in the processing bin 2, ensuring that the sand roller body 8 can efficiently dehull the rice grains. After dehulling, the rice grains fall into the separation bin 22 through the feeding bin 12, preparing for subsequent husk separation.

[0040] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 9 and attached Figure 10 The outer wall of the second belt 14 is provided with a second driven pulley 6, the outer wall of the second driven pulley 6 is fixedly connected to the outer wall of the first driven pulley 7, the outer wall of the second driven pulley 6 is provided with a third belt 19, and the outer wall of the third belt 19 is provided with a pulley 20; the outer wall of the pulley 20 is fixedly connected with a fan blade 21, and the outer wall of the fan blade 21 is rotatably connected through the machine body 1; the machine body 1 is provided with a separation chamber 22 and an air chamber 30, the outer wall of the separation chamber 22 is fixedly connected to the outer wall of the air chamber 30, and the outer wall of the air chamber 30 is fixedly connected with an air outlet pipe 29; the outer wall of the feeding chamber 12 is fixedly connected to the outer wall of the separation chamber 22, the separation chamber 22 is provided with a second damping plate 28, and the outer wall of the separation chamber 22 is provided with an observation window 23.

[0041] Specifically, under the connection of the third belt 19, the first driven pulley 7 drives the pulley 20 to rotate via the second driven pulley 6, thereby transmitting power to the fan blade 21; the pulley 20 drives the fan blade 21 to rotate, and the rotation of the fan blade 21 generates airflow, providing wind power for chaff separation; the separation chamber 22 supports and limits the fan blade 21, and the fan blade 21 is connected to the separation chamber 22 through a connecting shaft to ensure the stability of the fan blade 21 during rotation, thereby generating a stable airflow; the wind chamber 30 protects the fan blade 21, preventing the fan blade 21 from... During rotation, it collides with other components. At the same time, the air chamber 30 also serves to connect the separation chamber 22 and the air outlet pipe 29, guiding the airflow in a directional direction. The second damping plate 28 acts as a guide, directing the mixture of rice husks and rice grains from the processing chamber 2 to a suitable airflow area, so that the rice husks are discharged from the air outlet pipe 29 under the action of the airflow, thereby achieving the effect of separating rice husks and rice grains. The observation window 23 facilitates the observation of the rice husk separation inside the separation chamber 22. Operators can use the observation window 23 to understand the separation effect in real time and make timely adjustments to ensure the separation quality.

[0042] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 9 and attached Figure 10 The outer wall of the separation chamber 22 is fixedly connected to a limit frame 24. The inside of the limit frame 24 is slidably connected to a positioning screw 26. The outer wall of the positioning screw 26 is threadedly connected to an L-shaped rod 25. The outer wall of the L-shaped rod 25 is slidably connected to the outer wall of the limit frame 24. The outer wall of the L-shaped rod 25 is fixedly connected to a guide plate 27. The outer wall of the guide plate 27 is rotatably connected to the inside of the fan blade 21. The outer wall of the body 1 is fixedly connected to a protective shell 31. The outer walls of the drive pulley 4, the second driven pulley 6, the first driven pulley 7, and the gear 11 are all located inside the protective shell 31.

[0043] Specifically, the limiting frame 24 restricts the movement trajectory of the L-shaped rod 25, ensuring that the L-shaped rod 25 can only slide within the limiting frame 24, thus guaranteeing the accuracy of the L-shaped rod 25 in rotating the guide plate 27. Pulling the L-shaped rod 25 causes the guide plate 27 to rotate within the separation chamber 22, thereby adjusting the degree of closure of the guide plate 27. Changes in the degree of closure of the guide plate 27 alter the airflow state within the separation chamber 22, thereby regulating the separation of rice grains and husks. The positioning screw 26 fixes the position of the L-shaped rod 25. Once the guide plate 27 is adjusted to the appropriate position, tightening the positioning screw 26 secures the L-shaped rod 25, thus fixing the position of the guide plate 27 and ensuring the stability of the separation effect. The protective shell 31 encloses the driving pulley 4, the second driven pulley 6, the first driven pulley 7, and the gear 11. This effectively prevents external debris from interfering with the movement of these components, ensuring smooth transmission, and also prevents operators from contacting the rotating parts, thereby improving the overall safety of the equipment.

[0044] The above-mentioned sand roller rice milling machine operates as follows: After starting the sand roller rice milling machine, the motor 3 drives the drive pulley 4 to rotate. The drive pulley 4 drives the first driven pulley 7 to rotate via the first belt 5, thereby driving the sand roller body 8 in the processing chamber 2 to rotate. At the same time, the sand roller body 8, driven by the gear 11, can cause the two sets of sand roller bodies 8 to rotate in opposite directions, providing power for rice hulling. The linkage gear 11 on the two sand roller bodies 8 has different numbers of teeth, thus allowing the two rollers to form a certain speed difference. When rotating in opposite directions, the high-speed roller generates a strong traction and conveying effect on the grain, while the low-speed roller generates a strong traction and conveying effect on the grain. The speed rollers create a relative resistance effect, and the speed difference between them causes the grains to be subjected to continuous shearing and kneading forces, thereby effectively removing the rice bran. The rice in the storage bin 18 needs to be transported to the processing bin 2 by the feeding assembly: the first driven pulley 7 drives the coaxial second driven pulley 6 to rotate synchronously, and the second driven pulley 6 drives the third driven pulley 15 to rotate through the second belt 14, which in turn drives the feeding cylinder 16 in the support frame 17 to rotate. During the rotation of the feeding cylinder 16, the rice in the storage bin 18 is orderly and quantitatively discharged and fed onto the two sets of opposing rotating sand roller bodies 8 through the feeding hopper 32.

[0045] Then, the rice grains are dehulled under the crushing and friction of the sand roller body 8. The cleaning brush 10 in the processing chamber 2 continuously cleans the surface of the rice grains as the sand roller body 8 rotates, preventing the rice husks from sticking together. The dehulled mixture falls onto the grid 9. The dehulled rice grains pass through the gaps in the grid 9 and fall onto the first damping plate 13 in the lower feeding chamber 12. The undehulled rice grains are intercepted by the grid 9 and return to the sand roller under the airflow generated by the rotation of the sand roller body 8 for dehulling again. Subsequently, the first damping plate 13 guides the mixture of rice grains and residual rice husks into the separation chamber 22. At the same time, the second driven pulley 6 passes through... The third belt 19 drives the pulley 20 to rotate, which in turn drives the fan blades 21 to rotate in the air chamber 30 to generate airflow. The second moistening plate 28 in the separation chamber 22 guides the mixture to contact the airflow evenly. The rice husks are carried out by the airflow and discharged from the air outlet 29, while the rice grains fall to the bottom of the separation chamber 22 to complete the separation. During the process, the separation status can be viewed through the observation window 23. Pulling the L-shaped rod 25 adjusts the degree of closure of the guide plate 27 to optimize the separation effect. After adjustment, the positioning screw 26 is tightened to fix the position of the guide plate 27. The protective shell 31 protects all transmission components throughout the process to ensure stable and safe operation of the equipment.

[0046] 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 sand roller rice milling machine, comprising a machine body (1), characterized in that, The machine body (1) is equipped with a processing chamber (2) inside. A motor (3) is fixedly connected to the outer wall of the processing chamber (2). A drive pulley (4) is fixedly connected to the output end of the motor (3). A first belt (5) is provided on the outer wall of the drive pulley (4). A first driven pulley (7) is provided on the outer wall of the first belt (5). A sanding roller body (8) is fixedly connected to the outer wall of the first driven pulley (7). The outer wall of the sanding roller body (8) is rotatably connected to the inside of the processing chamber (2). Gears (11) are fixedly connected to the outer wall of the machine body (1), a grid (9) is fixedly connected to the inside of the processing chamber (2), a cleaning brush (10) is fixedly connected to the outer wall of the grid (9), the outer wall of the sand roller body (8) is slidably connected to the outer wall of the cleaning brush (10), a feeding chamber (12) is provided inside the machine body (1), a first lubricating plate (13) is fixedly connected inside the feeding chamber (12), the feeding chamber (12) is located below the processing chamber (2), and a feeding assembly is provided on the upper surface of the processing chamber (2).

2. The sand roller rice milling machine according to claim 1, characterized in that, The feeding assembly includes a support frame (17), the outer wall of which is fixedly connected to the upper surface of the processing chamber (2), the inside of which is a feeding hopper (32), the inside of which is a storage hopper (18), and the inside of which is a feeding cylinder (16) is rotatably connected.

3. The sand roller rice milling machine according to claim 2, characterized in that, The outer wall of the feeding cylinder (16) is rotatably connected to the outer wall of the storage bin (18). The outer wall of the feeding cylinder (16) is fixedly connected to a third driven pulley (15), and the outer wall of the third driven pulley (15) is provided with a second belt (14).

4. A sand roller rice milling machine according to claim 3, characterized in that, The outer wall of the second belt (14) is provided with a second driven pulley (6), the outer wall of the second driven pulley (6) is fixedly connected to the outer wall of the first driven pulley (7), the outer wall of the second driven pulley (6) is provided with a third belt (19), and the outer wall of the third belt (19) is provided with a pulley (20).

5. A sand roller rice milling machine according to claim 4, characterized in that, The outer wall of the pulley (20) is fixedly connected to a fan blade (21), and the outer wall of the fan blade (21) is rotatably connected to the inside of the machine body (1).

6. A sand roller rice milling machine according to claim 1, characterized in that, The body (1) is provided with a separation chamber (22) and a wind chamber (30) inside. The outer wall of the separation chamber (22) is fixedly connected to the outer wall of the wind chamber (30), and the outer wall of the wind chamber (30) is fixedly connected to an air outlet pipe (29).

7. A sand roller rice milling machine according to claim 1, characterized in that, The outer wall of the feeding bin (12) is fixedly connected to the outer wall of the separation bin (22). The separation bin (22) is provided with a second lubricating plate (28) inside and an observation window (23) is provided on the outer wall of the separation bin (22).

8. A sand roller rice milling machine according to claim 6, characterized in that, The outer wall of the separation chamber (22) is fixedly connected to a limiting frame (24), and the inside of the limiting frame (24) is slidably connected to a positioning screw (26), and the outer wall of the positioning screw (26) is threadedly connected to an L-shaped rod (25).

9. A sand roller rice milling machine according to claim 8, characterized in that, The outer wall of the L-shaped rod (25) is slidably connected to the outer wall of the limiting frame (24), and the outer wall of the L-shaped rod (25) is fixedly connected to the guide plate (27). The outer wall of the guide plate (27) is rotatably connected to the inside of the fan blade (21).

10. A sand roller rice milling machine according to claim 1, characterized in that, The outer wall of the body (1) is fixedly connected to a protective shell (31), and the outer walls of the driving pulley (4), the second driven pulley (6), the first driven pulley (7) and the gear (11) are all located inside the protective shell (31).

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