A rice huller
By introducing a feeding box and feeding column into the rice huller, the problems of inconvenient operation and non-compact structure have been solved, enabling precise conveying of paddy rice and separation of bran, thus improving the operating efficiency and energy efficiency of the rice huller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN ACAD OF GRAIN & OIL SCI (YUNNAN GRAIN & OIL PROD QUALITY SUPERVISION INSPECTION & TESTING CENT)
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-02
AI Technical Summary
Existing rice hullers are inconvenient to operate, have a non-compact structure, consume a lot of fan power, and are difficult to feed rice into, making it difficult to accurately control the rice hulling effect.
A rice huller structure including a feeding box and a feeding column was designed. The rice is first poured into the feeding hopper and then started. The amount of rice passing through is controlled by the feeding column. Combined with a differential speed hulling roller and a bran suction fan, the rice is accurately conveyed and the bran is separated. The structure is compact.
It features convenient operation, compact structure, precise control of rice hulling effect, reduced energy consumption, and improved rice processing efficiency.
Smart Images
Figure CN224308457U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rice hulling machine technology and relates to a rice hulling machine. 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 intact as possible.
[0003] Existing rice hullers, such as the rice hulling and milling combination machine with a diversion structure disclosed in Chinese patent literature [Patent No.: 201920115605.3; Application Publication No.: CN209530954U], include a frame with a rice hulling and milling structure at the top. A fan is installed in the frame, and an inclined air duct is also provided on the frame. The top of the air duct is connected to the fan, and the middle part of the air duct has a feed hole located below the discharge port of the rice hulling and milling structure. The diversion structure includes a first diversion channel and a second diversion channel located at the bottom of the air duct. A rotatable diversion plate is provided at the connection between the air duct, the first diversion channel, and the second diversion channel. Rotating the diversion plate can connect the air duct with the first diversion channel or connect the air duct with the second diversion channel.
[0004] This type of rice hulling and milling machine can both husk and mill rice, with the milling structure located below the hulling section. This results in a relatively high overall height of the machine and a high discharge hopper, making it inconvenient for operators to load the rice. Furthermore, this type of machine requires starting the equipment first to rotate the two rubber rollers before the paddy rice can be poured into the discharge hopper, making operation cumbersome. Additionally, the blower is located far from the outlets for the brown rice and bran, requiring greater negative pressure to remove the bran, necessitating a more powerful blower and consuming more energy. Summary of the Invention
[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a rice huller that solves the technical problem of making the rice huller easy to operate and compact in structure.
[0006] The objective of this utility model can be achieved through the following technical solution: A rice hulling machine includes a housing, a hulling fan and a hulling collection box disposed in the housing, and a feeding hopper, a pair of differential speed hulling rollers, a separation channel and a brown rice collection box arranged sequentially from top to bottom in the housing. The hulling fan connects the separation channel and the hulling collection box. The characteristic feature is that the housing also includes a feeding box located between the feeding hopper and the pair of differential speed hulling rollers. The feeding box has a feeding channel, and the feeding hopper is connected to the space between the pair of differential speed hulling rollers through the feeding channel. The feeding channel has a cylindrical and rotatable feeding column, which is arranged along the edge of the feeding channel inlet to block the passage of rice grains. The outer peripheral wall of the feeding column has several recessed feeding grooves.
[0007] The feeding column is set along the edge of the feeding channel inlet. The feeding column can block the rice in the feeding hopper, preventing the rice from falling directly from the feeding channel into the space between a pair of differential hulling rollers. After the rice is poured into the feeding hopper, the rice huller is started. The pair of differential hulling rollers rotate at a speed of 1:2. Then the feeding column rotates, and the rice is embedded in the feeding trough. This part of the rice falls from the feeding trough under its own gravity as the feeding column rotates, thus conveying the rice through the feeding trough. The rice falls through the feeding channel into the space between a pair of differential hulling rollers. By controlling the rotation speed of the feeding column, the amount of rice passing through the feeding trough can be controlled, thereby precisely controlling the rice hulling effect. The rice huller removes the husks from the paddy rice by rotating a pair of differential speed hulling rollers, forming brown rice and bran. Due to its greater weight, the brown rice falls into the brown rice collection box through the separation channel under its own gravity. The bran suction fan generates negative pressure to suck the bran from the separation channel into the bran collection box. This rice huller is easy to operate, and the brown rice collection box is located directly below the separation channel, which can effectively reduce the height of the machine and make the structure of this rice huller compact.
[0008] In the aforementioned rice hulling machine, the feeding box is equipped with a left guide plate and a right guide plate. Both the left and right guide plates form the channel walls of the feeding channel. The left guide plate is located to the left of the feeding column, inclined inwards and downwards, with its inner side extending diagonally below the feeding column and adjacent to it. The right guide plate is located to the right of the feeding column, inclined inwards and downwards, with its inner side extending directly above the feeding column and adjacent to it. Both the left and right guide plates serve a guiding function, ensuring that the rice flows through them into the feeding column, allowing it to pass through the feeding channel more effectively under the influence of the feeding column.
[0009] In the aforementioned rice hulling machine, a left adjustment hole and a right adjustment hole are respectively provided on both sides of the feeding box. Both the left and right adjustment holes are elongated and vertically oriented. A left adjustment column is fixedly connected to the left guide plate, and a right adjustment column is fixedly connected to the right guide plate. The left adjustment column passes through the left adjustment hole and can move up and down along it, as does the right adjustment column. This structure allows for adjustment of the height of the left and right guide plates, thereby adjusting the gap between the feeding column and the left and right guide plates. This allows for control of the rice feeding speed, enabling precise control of the hulling effect. Furthermore, tightening the nuts securely clamps and fixes the left and right guide plates.
[0010] In the aforementioned rice hulling machine, the bottom of the feeding box has an elongated feeding port, and the channel walls of the feeding channels on both sides of the feeding port are inclined inward and downward. The feeding column is located directly above the feeding port. This structure allows the rice to pass through the feeding channels more effectively into the space between a pair of differential speed hulling rollers.
[0011] In the aforementioned rice hulling machine, the bottom of the feeding box has two downwardly protruding baffles, which are located at opposite ends of the feeding port. The feeding port is situated directly above the space between a pair of differential hulling rollers. The two baffles are embedded in the space between the two ends of the pair of differential hulling rollers. This structure ensures that the rice grains in the space between the pair of differential hulling rollers do not fall out, and that the pair of differential hulling rollers can effectively husk the rice.
[0012] In the rice hulling machine described above, the feeding trough is a rectangular trough, and its length is arranged along the axial direction of the feeding column. This structure allows the rice to enter the feeding trough more effectively, and the rotation of the feeding column facilitates the passage of the rice.
[0013] In the aforementioned rice huller, a drive source is fixedly connected to the housing. The output shaft of the drive source is inserted and fixed in the feeding column, and the drive source can drive the feeding column to rotate. The rotation speed of the feeding column can be precisely controlled by the drive source, and a delay device can be installed on the drive source so that the start-up speed of the drive source is slower than the start-up speed of the pair of differential dehulling rollers, for example, 3 seconds slower. This ensures that the rice is effectively dehulled as soon as it falls into the space between the pair of differential dehulling rollers.
[0014] In the aforementioned rice huller, a transparent cover is installed on the front of the housing, directly in front of the separation channel. This structure visualizes the separation of brown rice and bran, allowing operators to observe the separation effect and adjust the rice huller accordingly.
[0015] In the aforementioned rice huller, both the bran collection box and the brown rice collection box are drawer-type structures, located at the bottom of the casing and at the same height. This structure allows for a relatively low overall height of the casing, making the rice huller compact.
[0016] In the aforementioned rice huller, the chaff suction fan is located on the side of the separation channel and directly above the chaff collection box. This structure is rationally arranged, making the rice huller compact.
[0017] Compared with the prior art, the rice huller provided by this utility model has the following advantages:
[0018] 1. This rice huller is equipped with a feeding box and a feeding column, which allows the rice to be poured into the feeding hopper before starting the rice huller, making the rice huller easy to operate. Moreover, the feeding column can control the speed at which the rice passes through, thereby allowing for precise control of the rice hulling effect.
[0019] 2. The brown rice collection box of this rice huller is located directly below the separation channel, and the bran collection box and the brown rice collection box are at the same height, which can effectively reduce the height of the machine and make the structure of this rice huller compact. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this rice huller.
[0021] Figure 2 This is a schematic diagram of the internal structure of this rice huller.
[0022] Figure 3 This is a cross-sectional view of the feeding box and feeding column of this rice huller.
[0023] Figure 4 This is a top view of the feed box of the rice huller.
[0024] In the diagram: 1. Box body; 2. Bran suction fan; 3. Bran collection box; 4. Feed hopper; 5. Differential speed hulling roller; 6. Separation channel; 7. Brown rice collection box; 8. Feed box; 9. Feed channel; 10. Feed column; 11. Feed trough; 12. Left guide plate; 13. Right guide plate; 14. Left adjustment hole; 15. Right adjustment hole; 16. Left adjustment column; 17. Right adjustment column; 18. Feed port; 19. Baffle; 20. Drive source; 21. Transparent cover. Detailed Implementation
[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0026] like Figure 1 , Figure 2 As shown, this rice huller includes a housing 1, a hulling fan 2, a hulling collection box 3, a feeding hopper 4, a differential speed hulling roller 5, a separation channel 6, a brown rice collection box 7, a feeding box 8, a feeding column 10, a left guide plate 12, a right guide plate 13, a drive source 20, and a transparent cover 21.
[0027] The feeding hopper 4, feeding box 8, a pair of differential speed hulling rollers 5, separation channel 6, and brown rice collection box 7 are arranged sequentially from top to bottom in the housing 1. A transparent cover 21 is installed on the front of the housing 1, located directly in front of the separation channel 6. A bran suction fan 2 and a bran collection box 3 are located in the housing 1. The bran suction fan 2 is located on the side of the separation channel 6 and directly above the bran collection box 3, connecting the separation channel 6 and the bran collection box 3. Both the bran collection box 3 and the brown rice collection box 7 are drawer-type structures, located at the bottom of the housing 1, and at the same height.
[0028] like Figure 3 , Figure 4 As shown, the feeding box 8 has a feeding channel 9, and the feeding hopper 4 is connected to the space between a pair of differential speed peeling rollers 5 through the feeding channel 9. The feeding channel 9 is provided with a cylindrical and rotatable feeding column 10. The feeding column 10 is arranged along the edge of the feeding inlet of the feeding channel 9 so that it can block the passage of rice. A drive source 20 is fixedly connected in the box 1. The output shaft of the drive source 20 is inserted and fixed in the feeding column 10, and the drive source 20 can drive the feeding column 10 to rotate. In this embodiment, the outer peripheral wall of the feeding column 10 is provided with eight recessed feeding grooves 11. The feeding grooves 11 are rectangular grooves, and the length direction of the feeding grooves 11 is arranged along the axial direction of the feeding column 10. In actual production, the number of feeding grooves 11 can be four or sixteen.
[0029] The feeding box 8 is provided with a left guide plate 12 and a right guide plate 13. Both the left guide plate 12 and the right guide plate 13 are channel walls of the feeding channel 9. The left guide plate 12 is located on the left side of the feeding column 10. The left guide plate 12 is inclined inward and downward. The inner side of the left guide plate 12 extends to the lower side of the feeding column 10 and is adjacent to the feeding column 10. The right guide plate 13 is located on the right side of the feeding column 10. The right guide plate 13 is inclined inward and downward. The inner side of the right guide plate 13 extends to the top of the feeding column 10 and is adjacent to the feeding column 10. The feeding box 8 has a left adjustment hole 14 and a right adjustment hole 15 on both sides. Both the left and right adjustment holes 14 and 15 are elongated and vertically oriented. A left adjustment column 16 is fixed to the left guide plate 12, and a right adjustment column 17 is fixed to the right guide plate 13. The left adjustment column 16 passes through the left adjustment hole 14 and can move up and down along the left adjustment hole 14. The right adjustment column 17 passes through the right adjustment hole 15 and can move up and down along the right adjustment hole 15. The bottom of the feeding box 8 has an elongated feeding port 18. The channel walls of the feeding channels 9 on both sides of the feeding port 18 are inclined inward and downward. The feeding column 10 is located directly above the feeding port 18. The bottom of the feeding box 8 has two downwardly protruding baffles 19, which are located at both ends of the feeding port 18. The feeding port 18 is located directly above the space between a pair of differential peeling rollers 5, and the two baffles 19 are respectively embedded in the space between the two ends of the pair of differential peeling rollers 5. In this embodiment, the drive source 20 is a drive motor. In actual production, the drive source 20 can be a rotary cylinder.
[0030] During operation, the rice is poured into the feeding hopper 4, and then the rice huller is started. A pair of differential hulling rollers 5 rotate, and the speed of the pair of differential hulling rollers 5 is 1:2. The drive source is started after 203 seconds by the delay timer, which makes the feeding column 10 rotate. The rice flows through the feeding channel 9 into the space between the pair of differential hulling rollers 5. The rice is hulled by the pair of differential hulling rollers 5. The brown rice flows directly to the brown rice collection box 7 through the separation channel 6, and the bran flows to the bran collection box 3 through the bran suction fan 2.
[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0032] Although this document frequently uses terms such as box 1, bran suction fan 2, bran collection box 3, feeding hopper 4, differential speed hulling roller 5, separation channel 6, brown rice collection box 7, feeding box 8, feeding channel 9, feeding column 10, feeding trough 11, left guide plate 12, right guide plate 13, left adjusting hole 14, right adjusting hole 15, left adjusting column 16, right adjusting column 17, feeding port 18, baffle 19, drive source 20, transparent cover 21, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.
Claims
1. A rice hulling machine, comprising a housing (1), a rice hulling fan (2) and a rice hulling collection box (3) disposed in the housing (1), and a feeding hopper (4), a pair of differential speed hulling rollers (5), a separation channel (6), and a brown rice collection box (7) arranged sequentially from top to bottom in the housing (1), wherein the rice hulling fan (2) connects the separation channel (6) and the rice hulling collection box (3), characterized in that, The box (1) is also provided with a feeding box (8), which is located between the feeding hopper (4) and a pair of differential dehulling rollers (5). The feeding box (8) has a feeding channel (9). The feeding hopper (4) is connected to the space between the pair of differential dehulling rollers (5) through the feeding channel (9). The feeding channel (9) is provided with a cylindrical and rotatable feeding column (10). The feeding column (10) is arranged along the edge of the feeding port of the feeding channel (9) so that the feeding column (10) can block the rice from passing through. The outer peripheral wall of the feeding column (10) is provided with a number of recessed feeding grooves (11).
2. A rice huller according to claim 1, characterized in that, The feeding box (8) is provided with a left guide plate (12) and a right guide plate (13). The left guide plate (12) and the right guide plate (13) are both channel walls of the feeding channel (9). The left guide plate (12) is located on the left side of the feeding column (10). The left guide plate (12) is inclined inward and downward. The inner side of the left guide plate (12) extends to the lower side of the feeding column (10) and is adjacent to the feeding column (10). The right guide plate (13) is located on the right side of the feeding column (10). The right guide plate (13) is inclined inward and downward. The inner side of the right guide plate (13) extends to the top of the feeding column (10) and is adjacent to the feeding column (10).
3. A rice huller according to claim 2, characterized in that, The feeding box (8) is provided with a left adjustment hole (14) and a right adjustment hole (15) on both sides respectively. The left adjustment hole (14) and the right adjustment hole (15) are both elongated and arranged in the vertical direction. A left adjustment column (16) is fixedly connected to the left guide plate (12), and a right adjustment column (17) is fixedly connected to the right guide plate (13). The left adjustment column (16) passes through the left adjustment hole (14) and can move up and down along the left adjustment hole (14). The right adjustment column (17) passes through the right adjustment hole (15) and can move up and down along the right adjustment hole (15).
4. A rice huller according to claim 1, 2, or 3, characterized in that, The bottom of the feeding box (8) has a long strip-shaped feeding port (18). The channel walls of the feeding channels (9) located on both sides of the feeding port (18) are inclined inward and downward. The feeding column (10) is located directly above the feeding port (18).
5. A rice huller according to claim 4, characterized in that, The bottom of the feeding box (8) has two downward protruding baffles (19), which are located at both ends of the feeding port (18). The feeding port (18) is located directly above the space between the pair of differential peeling rollers (5), and the two baffles (19) are respectively embedded in the space between the two ends of the pair of differential peeling rollers (5).
6. A rice huller according to claim 1, 2, or 3, characterized in that, The feeding trough (11) is a rectangular trough, and the length direction of the feeding trough (11) is arranged along the axial direction of the feeding column (10).
7. A rice huller according to claim 1, 2, or 3, characterized in that, A drive source (20) is fixedly connected in the housing (1). The output shaft of the drive source (20) passes through and is fixed in the feed column (10). The drive source (20) can drive the feed column (10) to rotate.
8. A rice huller according to claim 1, 2, or 3, characterized in that, A transparent cover (21) is installed on the front of the box (1), and the transparent cover (21) is located directly in front of the separation channel (6).
9. A rice huller according to claim 1, 2, or 3, characterized in that, Both the bran collection box (3) and the brown rice collection box (7) are drawer-type structures. Both the bran collection box (3) and the brown rice collection box (7) are located at the bottom of the box body (1) and are at the same height.
10. A rice huller according to claim 1, 2, or 3, characterized in that, The chaff suction fan (2) is located on the side of the separation channel (6) and directly above the chaff collection box (3).