Hulling equipment for grain processing
By using an adjustable-gap lower and upper grinding disc structure, the problem of incomplete dehulling of different types of grains is solved, enabling complete dehulling of grains of different sizes and improving dehulling efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing technology, because the spacing between the rubber rollers is fixed, different types of grains cannot be completely dehulled during the dehulling process, resulting in a large number of defective products.
The structure employs an adjustable-gap lower and upper grinding disc, with the gap adjusted by a servo motor driving the connecting column to slide within the rotating shaft. This, combined with a threaded bolt, enables complete dehulling of grains of different sizes.
It achieves complete dehulling of grains of different sizes, avoids the generation of defective products, and improves dehulling efficiency.
Smart Images

Figure CN224072037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain processing technology, specifically to a grain dehulling device. Background Technology
[0002] Grains cover a wide range, including rice, wheat, millet, soybeans, and other miscellaneous grains. Grains, including rice, wheat, millet, soybeans, etc., are mainly plant seeds and fruits and are the traditional staple food of many Asian people. When processing grains, a hulling device is used. The principle of the hulling machine is that the rice enters between two rubber rollers rotating in opposite directions. Under the pressure of the rollers, the rice husks are crushed and fall off.
[0003] Different types of grains vary in size. Because the spacing between the rubber rollers is fixed, some grains cannot be completely hulled, resulting in a large number of defective products. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a dehulling device for grain processing, which has the advantage of complete dehulling and avoids the problem of a large number of defective products resulting from incomplete dehulling of grains.
[0005] To achieve complete shell removal, this utility model provides the following technical solution:
[0006] A grain hulling device includes a main board, a screening box fixedly connected to the top of the main board, a hulling barrel fixedly connected to the top of the screening box, a hulling assembly installed inside the hulling barrel for hulling grains, a feeding assembly installed on the top of the main board for feeding grains into the hulling barrel, and further includes:
[0007] The shelling assembly includes a mounting frame, which is fixedly mounted on the top of the shelling barrel. A first servo motor is fixedly connected to the output end of the mounting frame, and a first rotating shaft is fixedly connected to the output end of the first servo motor. A connecting column is slidably connected to the inner wall of the first rotating shaft. A lower grinding disc is fixedly connected to the bottom end of the connecting column. An upper grinding disc is rotatably connected to the inner wall of the shelling barrel, and both the lower and upper grinding discs are inclined. A connecting plate is fixedly connected to the side wall of the first rotating shaft. A side plate is fixedly connected to the side wall of the connecting column located outside the first rotating shaft. A threaded bolt is threadedly connected to the top of the connecting plate, and the threaded bolt is rotatably connected to the side plate.
[0008] According to some embodiments, the feeding assembly includes a feeding box, which is fixedly installed on the top of the main board. A transmission barrel is fixedly connected to the inner wall of the feeding box. A second servo motor is fixedly connected to the top of the transmission barrel. A second rotating shaft is fixedly connected to the output end of the second servo motor. A spiral blade is fixedly connected to the side wall of the second rotating shaft. A connecting pipe is fixedly connected to the side wall of the transmission barrel, and the connecting pipe is inclined towards the opening of the shelling barrel.
[0009] According to some embodiments, an inclined plate is fixedly connected to the inner wall of the screening box, a fan is fixedly connected to the side wall of the screening box, and the inclined plate is inclined towards the fan. A rotating column is rotatably connected to the bottom of the mounting frame, a first gear is fixedly connected to the bottom of the rotating column, a second gear is fixedly connected to the side wall of the upper grinding disc, and the first gear and the second gear are meshed. A sprocket is fixedly connected to both the first rotating shaft and the side wall of the rotating column, and a track is rotatably connected between the sprockets. Beneficial effects
[0010] This utility model provides a dehulling device for grain processing, which has the following beneficial effects:
[0011] This grain processing dehulling equipment uses a threaded bolt to rotate, causing the threaded bolt to slide through the side plate and drive the connecting column to slide inside the first rotating shaft, thereby adjusting the distance between the lower and upper grinding discs. This facilitates the complete dehulling of grains of different sizes. Subsequently, the grains can be dehulled using the rotating lower and upper grinding discs.
[0012] This grain processing dehulling equipment drives a second servo motor, which in turn drives a spiral blade to rotate via a second rotating shaft. The rotation of the spiral blade can transfer grain from the bottom to the top of the transfer bucket, and then drop it into the inner cavity of the dehulling bucket through the connecting pipe, thus achieving the purpose of feeding. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the device of this utility model;
[0014] Figure 2 This is a partial cross-sectional structural diagram of the feeding assembly of this utility model;
[0015] Figure 3 This is a structural schematic diagram (front section) of the device of this utility model.
[0016] Figure 4 for Figure 3 A magnified view of point A in the middle;
[0017] Figure 5 This is a partial cross-sectional structural diagram of the shelling barrel of this utility model.
[0018] In the diagram: 1. Main board; 101. Screening box; 102. Shelling barrel; 2. Shelling assembly; 201. Mounting frame; 202. First servo motor; 203. First rotating shaft; 204. Connecting column; 205. Lower grinding disc; 206. Upper grinding disc; 207. Connecting plate; 208. Side plate; 209. Threaded bolt; 3. Feeding assembly; 301. Feed box; 302. Transfer barrel; 303. Second servo motor; 304. Second rotating shaft; 305. Spiral blade; 306. Connecting pipe; 4. Inclined plate; 401. Fan; 402. Rotating column; 403. First gear; 404. Second gear; 405. Sprocket; 406. Track. Detailed Implementation
[0019] 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.
[0020] Reference Figures 1-5 A grain hulling device includes a main board 1, a screening box 101 fixedly connected to the top of the main board 1, a hulling barrel 102 fixedly connected to the top of the screening box 101, a hulling assembly 2 installed inside the hulling barrel 102 for hulling grains, and a feeding assembly 3 installed on the top of the main board 1 for feeding grains into the hulling barrel 102. The device also includes:
[0021] The shelling assembly 2 includes a mounting frame 201, which is fixedly mounted on the top of the shelling barrel 102. A first servo motor 202 is fixedly connected to the output end of the mounting frame 201. A first rotating shaft 203 is fixedly connected to the output end of the first servo motor 202. A connecting column 204 is slidably connected to the inner wall of the first rotating shaft 203. A lower grinding disc 205 is fixedly connected to the bottom end of the connecting column 204. An upper grinding disc 206 is rotatably connected to the inner wall of the shelling barrel 102. Both the lower grinding disc 205 and the upper grinding disc 206 are set in an inclined position.
[0022] A connecting plate 207 is fixedly connected to the side wall of the first rotating shaft 203. A side plate 208 is fixedly connected to the side wall of the connecting column 204 located on the outer side of the first rotating shaft 203. A threaded bolt 209 is threadedly connected to the top of the connecting plate 207, and the threaded bolt 209 is rotatably connected to the side plate 208.
[0023] It should be noted that: the feeding assembly 3 is used to put the grain into the inner cavity of the hulling barrel 102, and at the same time, the first servo motor 202 on the top of the mounting frame 201 is driven. The first servo motor 202 drives the connecting column 204 to rotate through the first rotating shaft 203, thereby causing the lower grinding disc 205 to rotate. The centrifugal force generated by the rotation of the lower grinding disc 205 is used to transfer the grain between the lower grinding disc 205 and the upper grinding disc 206. The grain can be hulled by the rotating lower grinding disc 205 and the upper grinding disc 206. In addition, the threaded bolt 209 can be rotated to drive the connecting column 204 to slide through the side plate 208 in the inner cavity of the first rotating shaft 203, thereby adjusting the distance between the lower grinding disc 205 and the upper grinding disc 206, which is convenient for the complete hulling of grains of different sizes.
[0024] Reference Figures 1-5 The feeding assembly 3 includes a feeding box 301, which is fixedly installed on the top of the main board 1, and a transfer bucket 302 is fixedly connected to the inner wall of the feeding box 301.
[0025] A second servo motor 303 is fixedly connected to the top of the transmission barrel 302, and a second rotating shaft 304 is fixedly connected to the output end of the second servo motor 303.
[0026] A spiral blade 305 is fixedly connected to the side wall of the second rotating shaft 304, and a connecting pipe 306 is fixedly connected to the side wall of the transfer barrel 302, with the connecting pipe 306 inclined toward the opening of the shelling barrel 102.
[0027] It should be noted that: the grain is placed in the inner cavity of the feed box 301, and then the second servo motor 303 is driven. The second servo motor 303 drives the spiral blade 305 to rotate through the second rotating shaft 304. The rotation of the spiral blade 305 can transfer the grain from the bottom of the transfer bucket 302 to the top, and then drop it into the inner cavity of the hulling bucket 102 through the connecting pipe 306.
[0028] Reference Figures 1-5 An inclined plate 4 is fixedly connected to the inner wall of the screening box 101, and a fan 401 is fixedly connected to the side wall of the screening box 101, with the inclined plate 4 tilted towards the fan 401.
[0029] The bottom of the mounting bracket 201 is rotatably connected to a rotating column 402, the bottom of the rotating column 402 is fixedly connected to a first gear 403, and the side wall of the upper grinding disc 206 is fixedly connected to a second gear 404, and the first gear 403 and the second gear 404 are meshed together.
[0030] Sprockets 405 are fixedly connected to the side walls of the first rotating shaft 203 and the rotating column 402, and tracks 406 are rotatably connected between the sprockets 405.
[0031] It should be noted that after the grains are hulled, they fall onto the surface of the inclined plate 4 and slide down the inclined plate 4. At the same time, the fan 401 can be driven to generate wind power, which uses the difference in gravity to separate the grains from the hulls. The first rotating shaft 203 drives the rotating column 402 to rotate through the sprocket 405 and the track 406. The rotating column 402 drives the first gear 403 to rotate. The meshing connection between the first gear 403 and the second gear 404 makes the upper grinding disc 206 rotate in the opposite direction to the rotation of the lower grinding disc 205, which facilitates the hulling of the grains.
[0032] Operation method: Place the grains in the inner cavity of the feed box 301, and then drive the second servo motor 303. The second servo motor 303 drives the spiral blade 305 to rotate through the second rotating shaft 304. The rotation of the spiral blade 305 can transfer the grains from the bottom of the transfer bucket 302 to the top, and then drop them into the inner cavity of the hulling bucket 102 through the connecting pipe 306.
[0033] Simultaneously, the first servo motor 202 at the top of the mounting bracket 201 is driven. The first servo motor 202 drives the connecting column 204 to rotate via the first rotating shaft 203, thereby causing the lower grinding disc 205 to rotate. Using the centrifugal force generated by the rotation of the lower grinding disc 205, the grain is transferred between the lower grinding disc 205 and the upper grinding disc 206. The rotating lower grinding disc 205 and the upper grinding disc 206 can be used to dehull the grain. In addition, by rotating the threaded bolt 209, the threaded bolt 209 can drive the connecting column 204 to slide through the side plate 208 in the inner cavity of the first rotating shaft 203, thereby adjusting the distance between the lower grinding disc 205 and the upper grinding disc 206, which facilitates the complete dehulling of grains of different sizes.
[0034] 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 dehulling apparatus for grain processing, comprising a main plate (1), characterized in that: The top of the main plate (1) is fixedly connected with a screening box (101), the top of the screening box (101) is fixedly connected with a shelling barrel (102), the inner cavity of the shelling barrel (102) is provided with a shelling assembly (2), the shelling assembly (2) is used for shelling the grain, the top of the main plate (1) is provided with a feeding assembly (3), the feeding assembly (3) is used for feeding into the inner cavity of the shelling barrel (102), and the shelling barrel (102) is provided with a shelling assembly (2). The shelling assembly (2) comprises a mounting frame (201) fixedly installed on the top of the shelling barrel (102), a first servo motor (202) fixedly connected to the output end of the mounting frame (201), a first rotating shaft (203) fixedly connected to the output end of the first servo motor (202), a connecting column (204) slidably connected to the inner wall of the first rotating shaft (203), and a lower grinding disc (205) fixedly connected to the bottom end of the connecting column (204), wherein the inner wall of the shelling barrel (102) is rotatably connected with an upper grinding disc (206), and the lower grinding disc (205) and the upper grinding disc (206) are both arranged in an inclined manner.
2. A dehulling apparatus for processing grains according to claim 1, characterized in that: The side wall of the first rotating shaft (203) is fixedly connected with a connecting plate (207), the side wall of the connecting column (204) on the outer side of the first rotating shaft (203) is fixedly connected with a side plate (208), the top of the connecting plate (207) is threadedly connected with a threaded bolt (209), and the threaded bolt (209) is rotatably connected with the side plate (208).
3. A dehulling apparatus for processing grains according to claim 2, characterized in that: The feeding assembly (3) comprises a feeding box (301) fixedly installed on the top of the main plate (1), and the inner wall of the feeding box (301) is fixedly connected with a conveying barrel (302).
4. A dehulling apparatus for processing grains according to claim 3, characterized in that: The top of the conveying barrel (302) is fixedly connected with a second servo motor (303), and the output end of the second servo motor (303) is fixedly connected with a second rotating shaft (304).
5. A dehulling apparatus for processing grains according to claim 4, characterized in that: The side wall of the second rotating shaft (304) is fixedly connected with a spiral blade (305), the side wall of the conveying barrel (302) is fixedly connected with a connecting pipe (306), and the connecting pipe (306) is inclined to the opening of the shelling barrel (102).
6. A dehulling apparatus for processing grains according to claim 5, characterized in that: The inner wall of the screening box (101) is fixedly connected with an inclined plate (4), the side wall of the screening box (101) is fixedly connected with a fan (401), and the inclined plate (4) is inclined to the direction of the fan (401).
7. A dehulling apparatus for processing grains according to claim 6, characterized in that: The bottom of the mounting frame (201) is rotatably connected with a rotating column (402), the bottom of the rotating column (402) is fixedly connected with a first gear (403), the side wall of the upper grinding disc (206) is fixedly connected with a second gear (404), and the first gear (403) and the second gear (404) are in meshing connection.
8. A dehulling apparatus for processing grains according to claim 7, characterized in that: The side walls of the first rotating shaft (203) and the rotating column (402) are both fixedly connected with a chain wheel (405), and the chain wheels (405) are rotatably connected with a track (406).