Thresher with high threshing rate
By introducing screening components and milling wheels into the rice huller, combined with vibration screening and anti-collision plate design, the problem of impurities mixed in with brown rice has been solved, improving the purity of rice and the stability of equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGXIANG YANGZI CEREALS & OIL FOOD CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-21
AI Technical Summary
Existing rice hulling machines cannot achieve 100% purity during the hulling process. Brown rice may contain impurities such as incompletely removed hull fragments, dust, and small stones, affecting the purity of the rice and the operation of the equipment.
A rice huller with screening components was designed, including a filter plate, a slider, a slide plate, and a vibrating motor. It removes impurities from brown rice through vibration screening, separates brown rice and rice husks with a grinding wheel, sets up a crash plate to protect the discharge port, and controls the feeding speed to avoid blockage.
It effectively removes impurities from brown rice, improves the purity of rice, protects equipment from wear and clogging, ensures stable operation of equipment, and extends its service life.
Smart Images

Figure CN224524832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice hulling machine technology, and in particular to a rice hulling machine with a high hulling rate. Background Technology
[0002] A rice huller is a grain processing machine that removes the husk from paddy rice to produce brown rice. It removes the outer husk of the paddy rice, reducing grain breakage and surface damage, and preserving the brown rice as much as possible. It mainly consists of a hopper feeding device, a machine head, a husk separation chamber, a gearbox, and a frame. Common rice hullers include rubber roller hullers, sand disc hullers, and centrifugal hullers. Small and medium-sized rice hullers improve upon traditional rice milling processes, minimizing damage to the smooth surface of the brown rice to enhance the separation of paddy and brown rice, maintaining a high and stable hulling rate.
[0003] After initial cleaning, the rice is fed into the hopper and then evenly fed into the dehulling unit through the feeding device. The rice is dehulled by the squeezing and tearing action of a pair of horizontal rubber or plastic rollers. The two rollers rotate in opposite directions at different speeds, and the pressure of the pressure rollers squeezes and tears the rice, thereby achieving the purpose of dehulling. The separated rice is discharged from the outlet for further processing or packaging.
[0004] Among them, rice hulling is the process of removing the husks from paddy rice using a rice hulling machine to obtain brown rice. However, this process often cannot achieve 100% purity. Brown rice may still contain impurities such as fragments of husks that have not been completely removed, dust, and small stones, which will reduce the purity and quality of the rice. Furthermore, if the brown rice contains a lot of impurities, these impurities may cause wear or blockage to the equipment during subsequent processing such as milling and polishing, affecting the normal operation and lifespan of the equipment. Utility Model Content
[0005] In view of the problems mentioned above, excessive impurities in brown rice reduce product purity and affect product processing, this utility model is proposed.
[0006] To solve the above technical problems, the present invention provides the following technical solution: a rice huller with a high hulling rate, comprising a machine body, wherein a discharge port is provided on the surface of the machine body, a No. 1 spring is fixedly connected to the inner bottom of the discharge port, a collision protection plate is fixedly connected to the bottom of the No. 1 spring, and a screening component for rice sieving is provided at the bottom of the machine body.
[0007] The screening assembly includes a grooved plate fixedly connected to the bottom of the machine body. A main rod is fixedly connected to the inner bottom of the grooved plate. A second spring is fixedly connected to the bottom of the main rod. A secondary rod is fixedly connected to the bottom of the second spring. A slider is fixedly connected to the bottom of the secondary rod. A filter plate is fixedly connected to the bottom of the slider. A base plate is fixedly connected to the bottom of the filter plate. A sliding plate is fixedly connected to the surface of the filter plate and the base plate.
[0008] As a preferred embodiment of the rice huller with high hulling rate described in this utility model, a storage box is provided at the bottom of the filter plate and the first base plate, and a first compartment and a second compartment are respectively provided on the inner surface of the storage box. A vibration motor with its output end connected to the bottom spline of the first base plate is installed at the inner bottom of the machine body.
[0009] As a preferred embodiment of the rice huller with high hulling rate described in this utility model, the bottom of the machine body is provided with a second base plate, the upper surface of the machine body is provided with a feed inlet, the inner surface of the feed inlet is rotatably connected with a feed fan for easy feeding, and a first turntable is rotatably connected to one side of the machine body.
[0010] As a preferred embodiment of the high threshing rate rice huller described in this utility model, wherein: a motor is installed on the upper surface of the second base plate, a rotating rod is splined to the output end of the motor, a second turntable is fixedly connected to the surface of the rotating rod, a first belt is fitted between the first and second turntables, a first pressing wheel is rotatably connected to one end of the first turntable, and a second pressing wheel pair is rotatably connected to both sides of the first pressing wheel.
[0011] As a preferred embodiment of the high threshing rate rice huller described in this utility model, wherein: the second grinding wheel is rotatably connected to the inner surface of the machine body, one end of the first turntable is rotatably connected to the third turntable, and the side of the machine body away from the first belt is rotatably connected to the fourth turntable.
[0012] As a preferred embodiment of the rice huller with high threshing rate described in this utility model, a second belt is fitted between the third and fourth turntables, and a rotating plate is rotatably connected to one end of the fourth turntable.
[0013] The beneficial effects of this utility model are:
[0014] This invention features a screening assembly. A filter plate and a base plate vibrate to screen impurities in brown rice. Simultaneously, a slider moves reciprocally within a grooved plate. A secondary rod presses against the main rod, and a second spring presses it back to its original position, preventing damage from impacts during slider movement within the grooved plate. The vibrating filter plate causes impurities to fall through and into the base plate, finally exiting through a sliding plate. This filtration process effectively removes impurities from brown rice, such as husk fragments, dust, and small stones, thereby improving the purity and quality of the rice. If the brown rice contains a large amount of impurities, these impurities may cause wear or blockage during subsequent milling and polishing processes, affecting the normal operation and lifespan of the equipment. Filtration can reduce the occurrence of such problems. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0018] Figure 3 This is a schematic diagram showing the disassembled structure of the filter plate and the base plate of this utility model.
[0019] Figure 4 This is a schematic diagram of the disassembled structure of the main rod and the auxiliary rod of this utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Machine body; 2. Discharge port; 3. Spring No. 1; 4. Anti-collision plate; 5. Groove plate; 6. Main rod; 7. Spring No. 2; 8. Auxiliary rod; 9. Slider; 10. Filter plate; 11. Base plate No. 1; 12. Slide plate; 13. Storage box; 14. Vibrating motor; 15. Base plate No. 2; 16. Inlet; 17. Feed fan; 18. Turntable No. 1; 19. Motor; 20. Turntable No. 2; 21. Belt No. 1; 22. Rolling roller No. 1; 23. Rolling roller pair No. 2; 24. Turntable No. 3; 25. Turntable No. 4; 26. Belt No. 2; 27. Rotating plate. Detailed Implementation
[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0023] Example 1
[0024] Reference Figure 1-3 This is the first embodiment of the present invention, which provides a rice huller with a high hulling rate, including a machine body 1. The surface of the machine body 1 is provided with a discharge port 2. A first spring 3 is fixedly connected to the bottom of the discharge port 2. A collision plate 4 is fixedly connected to the bottom of the first spring 3. The first spring 3 and the collision plate 4 are used to protect the discharge port 2 and prevent it from being damaged by continuous impact from the filter plate 10. A screening component for rice sieving is provided at the bottom of the machine body 1.
[0025] The screening assembly includes a grooved plate 5 fixedly connected to the bottom of the machine body 1. A main rod 6 is fixedly connected to the inner bottom of the grooved plate 5. A second spring 7 is fixedly connected to the bottom of the main rod 6. A secondary rod 8 is fixedly connected to the bottom of the second spring 7. A slider 9 is fixedly connected to the bottom of the secondary rod 8. A filter plate 10 is fixedly connected to the bottom of the slider 9. A first base plate 11 is fixedly connected to the bottom of the filter plate 10. A sliding plate 12 is fixedly connected to the surfaces of the filter plate 10 and the first base plate 11. The sliding plate 12 is used for discharging material after screening.
[0026] Example 2
[0027] Reference Figure 1-4 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: a storage box 13 is provided at the bottom of the filter plate 10 and the first base plate 11. The inner surface of the storage box 13 is respectively provided with a first compartment and a second compartment, which correspond to the filter plate 10 and the first base plate 11, facilitating the separation of brown rice and impurities for discharge. A vibration motor 14 is installed at the bottom of the machine body 1, with its output end splined to the bottom of the first base plate 11. A second base plate 15 is provided at the bottom of the machine body 1. An inlet 16 is installed on the upper surface of the machine body 1. A feeding fan 17 is rotatably connected to the inner surface of the inlet 16 to facilitate feeding. The feeding fan 17 prevents excessively fast feeding speeds from causing material accumulation or blockage in the conveying pipe, affecting conveying efficiency. Furthermore, excessively fast feeding speeds may also cause impact and wear on the conveying equipment, shortening its service life. Therefore, to ensure smooth material conveying and stable equipment operation, it is necessary to control the feeding speed. One side of the machine body 1... A first turntable 18 is rotatably connected to a second base plate 15. A motor 19 is mounted on the upper surface of the second base plate 15. A rotating rod is splined to the output end of the motor 19. A second turntable 20 is fixedly connected to the surface of the rotating rod. A first belt 21 is fitted between the first turntable 18 and the second turntable 20. A first grinding wheel 22 is rotatably connected to one end of the first turntable 18. The first grinding wheel 22 and the second grinding wheel assembly 23 are used to separate brown rice from rice husks. The second grinding wheel assembly 23 is rotatably connected to both sides of the first grinding wheel 22. 3. The second grinding wheel pair 23 is rotatably connected to the inner surface of the machine body 1. The first turntable 18 is rotatably connected to the third turntable 24. The side of the machine body 1 away from the first belt 21 is rotatably connected to the fourth turntable 25. The second belt 26 is fitted between the third turntable 24 and the fourth turntable 25. The fourth turntable 25 is rotatably connected to the rotating plate 27. The rotating plate 27 is used to rotate the brown rice and rice husk to achieve an effective hulling effect. The impact hulling is used to hull the paddy rice, and the brown rice can be hulled again.
[0028] The working process of this utility model is as follows:
[0029] Workers pour unhulled brown rice into inlet 16. At the same time, the feed fan 17 rotates to prevent material from accumulating or clogging in the conveying pipe, which would affect the conveying efficiency. Workers start motor 19, which in turn rotates turntable 18, which drives turntable 20 via belt 21, causing crushing roller 22 to rotate. Since the crushing roller 22 and crushing roller 23 are close together, the rotation of crushing roller 22 and crushing roller 23 can crush the brown rice and effectively separate the brown rice from the husk. Then, turntable 24 rotates, which drives turntable 25 via belt 26, causing plate 27 to rotate and crush the brown rice again.
[0030] The operator then starts the vibration motor 14, causing the filter plate 10 and the first base plate 11 to vibrate. At the same time, the slider 9 moves back and forth within the groove plate 5. The auxiliary rod 8 presses against the main rod 6, and the second spring 7 is pressed back to its original position. The filter plate 10 vibrates and shakes, and impurities fall through the filter plate 10 into the first base plate 11. Finally, the material is discharged from the slide plate 12 and stored in the storage box 13. The filter plate 10 impacts the anti-collision plate 4, and the first spring 3 is compressed, which acts as a buffer and can protect the discharge port 2 from continuous impact damage from the filter plate 10.
[0031] The remaining structure is the same as that in Example 1.
[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A rice huller with a high hulling rate, comprising a body (1), wherein a discharge port (2) is provided on the surface of the body (1), a first spring (3) is fixedly connected to the inner bottom of the discharge port (2), and a crash plate (4) is fixedly connected to the bottom of the first spring (3), characterized in that, The bottom of the machine body (1) is provided with a screening component for sieving rice. The screening assembly includes a grooved plate (5) fixedly connected to the bottom of the body (1), a main rod (6) fixedly connected to the inner bottom of the grooved plate (5), a second spring (7) fixedly connected to the bottom of the main rod (6), a secondary rod (8) fixedly connected to the bottom of the second spring (7), a slider (9) fixedly connected to the bottom of the secondary rod (8), a filter plate (10) fixedly connected to the bottom of the slider (9), a first base plate (11) fixedly connected to the bottom of the filter plate (10), and a sliding plate (12) fixedly connected to the surfaces of the filter plate (10) and the first base plate (11).
2. A rice huller with a high hulling rate according to claim 1, characterized in that: The filter plate (10) and the bottom of the first base plate (11) are provided with a storage box (13). The inner surface of the storage box (13) is provided with a first compartment and a second compartment respectively. The inner bottom of the machine body (1) is equipped with a vibration motor (14) whose output end is connected to the bottom spline of the first base plate (11).
3. A rice huller with a high hulling rate according to claim 1, characterized in that: The bottom of the machine body (1) is provided with a second base plate (15), the upper surface of the machine body (1) is provided with a feed port (16), the inner surface of the feed port (16) is rotatably connected with a feed fan (17) to facilitate feeding, and a first turntable (18) is rotatably connected to one side of the machine body (1).
4. A rice huller with a high hulling rate according to claim 3, characterized in that: A motor (19) is installed on the upper surface of the second base plate (15). A rotating rod is splined to the output end of the motor (19). A second turntable (20) is fixedly connected to the surface of the rotating rod. A first belt (21) is fitted between the first turntable (18) and the second turntable (20). A first rolling wheel (22) is rotatably connected to one end of the first turntable (18). A second rolling wheel pair (23) is rotatably connected to both sides of the first rolling wheel (22).
5. A rice huller with a high hulling rate according to claim 4, characterized in that: The second rolling wheel pair (23) is rotatably connected to the inner surface of the machine body (1), one end of the first turntable (18) is rotatably connected to the third turntable (24), and the side of the machine body (1) away from the first belt (21) is rotatably connected to the fourth turntable (25).
6. A rice huller with a high hulling rate according to claim 5, characterized in that: A second belt (26) is fitted between the third turntable (24) and the fourth turntable (25), and a rotating plate (27) is rotatably connected to one end of the fourth turntable (25).