Rice huller

Abstract

A rice huller belongs to the technical field of rice processing and comprises a treatment box, a supporting arm is vertically mounted on the treatment box, a bearing frame is mounted on the supporting arm, a feeding bin is arranged on the bearing frame in the vertical direction, and a flow limiting assembly used for adjusting the flow in the feeding bin is arranged on the right side wall of the feeding bin. According to the rice flow limiting device, the flow of rice discharged from the feeding bin can be limited, the situation that materials are blocked in a conveying channel and a processing part due to the fact that the rice directly enters the subsequent hulling procedure without control is avoided, it is guaranteed that the rice enters the hulling procedure in a flow limiting and control mode, and the processing purpose that the subsequent rice is completely hulled is achieved; in addition, a speed difference can be formed between the two rotating rollers with different rotating speeds, so that friction force and extrusion force borne by the rice when the rice passes through the rotating rollers are more complex and diversified, rice hulls can be more effectively separated from rice grains, and therefore the hulling efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of rice processing technology, specifically relating to a rice hulling machine. Background Technology

[0002] Rice hulling machines are important equipment in grain processing. They can efficiently remove the outer husk of paddy rice and convert it into brown rice. Their working principle is based on the friction and extrusion between two rollers, which ensures good hulling effect, minimizes rice grain damage, and increases rice yield. They are widely used in rice mills of all sizes, helping the grain processing industry to operate efficiently.

[0003] A related technology (publication number CN216826337U) discloses a rice hulling machine, including a shell, a feeding hopper installed at the top of the shell, a feeding pipe connected to the feeding hopper, a solenoid valve installed at one end of the feeding pipe, a hulling mechanism installed inside the shell near the feeding pipe, a screening auxiliary device for lifting rice grains at the bottom of the shell, a pushing device for pushing rice grains above the screening auxiliary device, and a corresponding first fan and waste collection box between the pushing device and the hulling mechanism, with the first fan and waste collection box positioned opposite each other. The advantages of this utility model: The rice hulling machine provided by this utility model, by setting up a screening auxiliary device that can blow up rice husks, and a practical first fan and dust collection box, enables rice to be screened more thoroughly, thereby completely removing the rice husks mixed in with the rice.

[0004] Currently, most rice hulling machines on the market use an open-type rice feeding bin design. Because this bin is not equipped with a flow-limiting function, a large amount of rice will directly enter the subsequent hulling process without restraint during the operation of the hulling machine. This not only easily causes congestion in the material conveying channel and processing area, hindering the smooth progress of the production process, but also causes too much rice to flood into the hulling processing station at the same time, making it impossible for the hulling equipment to process each grain of rice sufficiently and effectively. As a result, incomplete hulling frequently occurs, which seriously affects the final quality of the rice after hulling. Utility Model Content

[0005] The existing rice feeding hopper uses an open design without flow control. During the hulling machine's operation, a large amount of rice enters the subsequent hulling process without restraint. This not only easily causes congestion in the conveying channel and processing area, hindering the smooth production process, but also results in excessive rice flooding into the hulling station, preventing the hulling equipment from effectively processing each grain. This leads to frequent incomplete hulling and seriously affects the final quality of the hulled rice. This invention provides a rice hulling machine that can adjust the size of the space at the bottom of the feeding hopper, thus limiting the flow of rice and preventing uncontrolled entry into the subsequent hulling process, which causes congestion in the conveying channel and processing area. This ensures that the rice enters the hulling process in a controlled and controlled manner, achieving complete hulling and guaranteeing the final quality of the hulled rice. The specific technical solution is as follows:

[0006] A rice hulling machine includes a processing box, a support arm vertically mounted on the processing box, a support frame mounted on the support arm, a feeding bin arranged vertically on the support frame, and a flow limiting component for adjusting the flow rate inside the feeding bin on the right side wall of the feeding bin.

[0007] The flow limiting component includes a housing fixedly installed on the right side wall of the feeding hopper. A movable seat is slidably disposed inside the housing. A groove is provided at the connection between the feeding hopper and the housing. The movable seat is slidably embedded in the cavity of the housing and the groove. One end of a screw is rotatably connected to the right side wall of the movable seat. The other end of the screw extends out of the right side wall of the housing. One end of a limiting post is vertically and fixedly installed on the right side wall of the movable seat. The other end of the limiting post slides through the right side wall of the housing. A scale is fixedly installed on the right side wall of the housing, and the scale slides through the right side wall of the housing.

[0008] In the above technical solution, the bottom output end of the feeding hopper is connected to one end of the material guiding channel, and the material guiding channel is inclined downward from left to right.

[0009] In the above technical solution, the processing box is equipped with a shell removal component;

[0010] The shell removal assembly includes four mounting seats fixedly installed on the processing box. Two mounting seats corresponding to each other at the front and back form a group. A rotating shaft is rotatably arranged between two mounting seats. A gear and a rotating roller are fixedly installed on each rotating shaft. A motor is mounted on the processing box through a motor frame. The output end of the motor is connected to the rotating shaft on the right side.

[0011] The diameter of the gear on the left is smaller than the diameter of the gear on the right.

[0012] In the above technical solution, the bottom output end of the material guide channel corresponds to the position of the gap between the two rotating rollers.

[0013] In the above technical solution, a feed inlet is installed at the top of the processing box, and the feed inlet corresponds to the gap between the two rotating rollers. An installation plate is vertically installed at the top of the inner wall of the processing box. A first discharge trough and a second discharge trough are installed inclined downward on the right side of the installation plate. A collection bin is installed at the bottom right side of the inner cavity of the processing box, and the second discharge trough corresponds to the position of the collection bin.

[0014] In the above technical solution, a temporary storage component is provided at the top of the inner cavity of the processing box;

[0015] The temporary storage component includes a side plate that is fixedly and vertically installed on the top of the inner wall of the processing box, and a temporary storage compartment is installed on the left side wall of the side plate.

[0016] In the above technical solution, a shell discharge channel is connected to the top of the processing box, a shell outlet is connected to the right side wall of the shell discharge channel, a fan is provided at the top of the shell discharge channel, and the two ends of the fan are respectively connected to the inner cavity of the shell discharge channel and the shell outlet.

[0017] In the above technical solution, the temporary storage bin is located below the shell discharge channel.

[0018] The rice hulling machine of this utility model has the following advantages compared with the prior art:

[0019] I. The existing rice feeding bins use an open design and lack flow control. During the hulling machine's operation, a large amount of rice flows directly into the subsequent hulling process without restraint, easily causing congestion in the conveying channel and processing area, hindering the smooth operation of the production process. This invention, by incorporating components such as a shell, screw, limiting post, and scale, allows for adjustment of the relative position of the moving seat at the bottom of the feeding bin's inner cavity. This adjustment controls the size of the space at the bottom of the feeding bin, thus limiting the flow of rice fed into the bin. This prevents rice from flowing directly into the subsequent hulling process without restraint, avoiding congestion in the conveying channel and processing area, and ensuring that rice flows into the hulling process in a controlled and controlled manner.

[0020] Second, in response to the problem that too much rice floods into the hulling processing station at the same time, causing the hulling equipment to be unable to process each grain of rice sufficiently and effectively, resulting in incomplete hulling and seriously affecting the final quality of the rice after hulling, this utility model can ensure that the rice is completely hulled by setting a flow restriction function at the bottom of the inner cavity of the feeding hopper, thus guaranteeing the final quality of the hulled rice.

[0021] Third, in this utility model, the displacement of the movable seat can be displayed by a scale, so as to accurately control the relative displacement of the movable seat in the inner cavity at the bottom of the feeding bin, so as to precisely adjust the size of the flow-limiting space of the feeding bin as needed.

[0022] IV. The existing market often uses two synchronously rotating rollers to dehull rice. However, the two rollers usually rotate at the same speed. Although the same speed can achieve the dehulling effect, the force applied to the rice by the rollers at the same speed is relatively simple and fixed. The friction and extrusion forces on the rice between the rollers are relatively stable, which limits the separation effect of rice husk from rice grain. It is difficult to process a large amount of rice in a short time, thus limiting the overall dehulling efficiency. This utility model is equipped with two gears of different diameters, which can drive two sets of rollers to rotate at different speeds. The speed difference between the two rollers with different speeds makes the friction and extrusion forces on the rice when passing through the rollers more complex and diverse. This can more effectively separate the rice husk from the rice grain, thereby improving the dehulling efficiency and processing more rice per unit time.

[0023] V. In this utility model, by setting up a temporary storage bin, the rice husks that have been separated in the discharge channel can be collected, preventing the rice husks that have been separated in the discharge channel from entering the collection bin under their own weight and mixing with the separated rice grains again when the wind suddenly stops. The rice husks temporarily collected in the temporary storage bin are discharged upward by restarting the fan.

[0024] In summary, this invention enables the adjustment of the space at the bottom of the feeding hopper, thus limiting the flow of rice fed into the hopper. This prevents the rice from entering the subsequent hulling process uncontrollably, which could cause congestion in the conveying channel and processing area. It ensures that the rice enters the hulling process in a controlled and controlled manner, achieving complete hulling and guaranteeing the final quality of the hulled rice. Furthermore, by setting two rollers with different rotational speeds, a speed difference is created, making the friction and pressure experienced by the rice as it passes through the rollers more complex and diverse. This allows for more effective separation of the husk from the rice grain, improving hulling efficiency and enabling the processing of more rice per unit time. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the processing box of this utility model;

[0026] Figure 2 This is a schematic diagram of the material guiding channel of this utility model;

[0027] Figure 3 This is a schematic diagram of the gear structure of this utility model;

[0028] Figure 4This is a schematic diagram of the structure of the tank body of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the shell of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the temporary storage bin of this utility model;

[0031] Figures 1 to 6 In the middle, 1. Processing box, 2. Support arm, 3. Support frame, 4. Feeding bin, 5. Shell, 6. Moving seat, 7. Tank, 8. Screw, 9. Limiting post, 10. Scale, 11. Material guide channel, 12. Mounting seat, 13. Rotating shaft, 14. Gear, 15. Rotating roller, 16. Motor, 17. Feed inlet, 18. Mounting plate, 19. First feeding trough, 20. Second feeding trough, 21. Collection bin, 22. Side plate, 23. Temporary storage bin, 24. Shell discharge channel, 25. Shell outlet, 26. Fan, 27. Support leg. Detailed Implementation

[0032] The following are specific implementation cases and appendices. Figures 1 to 6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0033] See Figures 1 to 6 As shown, a rice hulling machine includes a processing box 1, a support arm 2 vertically mounted on the processing box 1, a support frame 3 mounted on the support arm 2, a feeding bin 4 vertically arranged on the support frame 3, and a flow-limiting component for adjusting the flow rate within the feeding bin 4 on the right side wall of the feeding bin 4; (See main reference) Figures 3 to 5 As shown, the flow limiting component includes a housing 5 fixedly installed on the right side wall of the feeding bin 4. A movable seat 6 is slidably arranged inside the housing 5. A groove 7 is opened at the connection between the feeding bin 4 and the housing 5. The movable seat 6 is slidably embedded in the inner cavity of the housing 5 and the groove 7. One end of a screw 8 is rotatably connected to the right side wall of the movable seat 6. The other end of the screw 8 extends out of the right side wall of the housing 5. One end of a limiting post 9 is vertically and fixedly installed on the right side wall of the movable seat 6. The other end of the limiting post 9 slides through the right side wall of the housing 5. A scale 10 is fixedly installed on the right side wall of the housing 5, and the scale 10 slides through the right side wall of the housing 5.

[0034] Before use, adjust the position of the movable seat 6 at the bottom of the inner cavity of the feeding bin 4 as needed: rotate the drive screw 8 to drive the movable seat 6 to move along the groove 7 towards the inner cavity of the feeding bin 4. During the movement of the movable seat 6, the distance it moves relative to the housing 5 can be marked by the scale 10 to show the distance the movable seat 6 moves in the inner cavity of the feeding bin 4.

[0035] For details, please refer to Figure 3As shown, the bottom output end of the feeding bin 4 is connected to one end of the material guide channel 11. The material guide channel 11 is inclined downward from left to right, thereby ensuring that the mixture in the feeding bin 4 can be accurately conveyed to the subsequent process through the material guide channel 11.

[0036] Main references Figure 3 and Figure 4 As shown, a shell removal assembly is provided on the processing box 1; the shell removal assembly includes four mounting seats 12 fixedly installed on the processing box 1, with two mounting seats 12 corresponding to each other in the front and rear as a group, and a rotating shaft 13 rotatably arranged between the two mounting seats 12. A gear 14 and a rotating roller 15 are fixedly installed on each rotating shaft 13. A motor 16 is installed on the processing box 1 through a motor frame, and the output end of the motor 16 is connected to the right rotating shaft 13; wherein, the diameter of the left gear 14 is smaller than the diameter of the right gear 14.

[0037] The rice to be hulled is fed into the feeding hopper 4. Under the flow restriction effect of the moving seat 6, some of the rice is diverted and gradually enters the inner cavity of the guide channel 11. Under the guidance of the guide channel 11, it enters the space between the two rotating rollers 15. The motor 16 drives the right rotating shaft 13, gear 14 and rotating roller 15 to rotate. Since the diameter of the right gear 14 is larger than that of the left gear 14, the rotating gear 14 on the right drives the left gear 14 to rotate at different speeds. That is, the left and right gears 14 rotate at different speeds, thereby realizing that the left and right rollers 15 rotate at different speeds, so as to fully dehull the rice falling between the two rollers 15.

[0038] Main references Figure 3 As shown, the bottom output end of the feeding channel 11 corresponds to the position of the gap between the two rotating rollers 15, ensuring that the rice inside the feeding channel 11 can enter the gap between the two rotating rollers 15 for shell breaking.

[0039] Main references Figure 6As shown, a feed inlet 17 is installed at the top of the processing box 1, and the feed inlet 17 corresponds to the gap between the two rotating rollers 15. An installation plate 18 is vertically installed at the top of the inner wall of the processing box 1. A first discharge trough 19 and a second discharge trough 20 are installed inclined downward on the right side of the installation plate 18. A shell discharge channel 24 is connected to the top of the processing box 1. A shell discharge port 25 is connected to the right side wall of the shell discharge channel 24. A fan 26 is installed at the top of the shell discharge channel 24, and the two ends of the fan 26 are respectively connected to the shell discharge channel. The inner cavity of the 24 is connected to the outlet 25. The mixture after dehulling in the processing box 1 enters the first discharge trough 19 and the second discharge trough 20 through the feed inlet 17. Under the action of the blower 26, the lighter hulls are drawn upward to the inner cavity of the discharge channel 24, while the heavier dehulled grains enter the collection chamber 21 along the second discharge trough 20 for subsequent discharge. The collection chamber 21 is installed on the right side of the bottom of the collection chamber. The second discharge trough 20 and the collection chamber 21 are positioned opposite each other.

[0040] Main references Figure 6 As shown, a temporary storage component is provided at the top of the inner cavity of the processing box 1. The temporary storage component includes a side plate 22 that is fixed and vertically installed on the top of the inner wall of the processing box 1. A temporary storage chamber 23 is installed on the left side wall of the side plate 22. By setting the temporary storage chamber 23, the rice husks that have been separated in the husk discharge channel 24 can be collected, so as to prevent the rice husks that have been separated in the husk discharge channel 24 from entering the collection chamber 21 under their own weight and mixing with the separated rice grains again when the wind suddenly stops. The rice husks temporarily collected in the temporary storage chamber 23 are discharged upward through the husk outlet 25 by the subsequent restart of the fan 26.

[0041] Specifically, the temporary storage bin 23 is located below the hull discharge channel 24, thereby ensuring that the temporary storage bin 23 can accurately collect the rice hulls that fall naturally at the hull discharge channel 24.

[0042] It is worth noting that in this application, the screw 8 is a self-locking screw available on the market, which can self-lock when it stops rotating and will not rotate under external force; the motor 16 is a commonly used motor on the market, whose output end is equipped with a self-locking function, which can lock when it stops operating and will not rotate under external force, which is prior art; the hull discharge channel 24, the hull outlet 25, and the fan 26 work together to separate the grains and husks by air blowing, which is prior art, and other components can also be added to cooperate, as long as the above components can meet the requirements for separating grains and cereals; the model of the above existing components is not limited or described in detail here.

[0043] The working principle of a rice hulling machine in this embodiment is as follows:

[0044] Before use, adjust the position of the movable seat 6 at the bottom of the inner cavity of the feeding bin 4 as needed: rotate the drive screw 8 to drive the movable seat 6 to move along the groove 7 towards the inner cavity of the feeding bin 4. During the movement of the movable seat 6, the distance it moves relative to the housing 5 can be marked by the scale 10 to show the distance the movable seat 6 moves in the inner cavity of the feeding bin 4.

[0045] The rice to be hulled is fed into the feeding hopper 4. Under the flow restriction effect of the moving seat 6, some of the rice is diverted and gradually enters the inner cavity of the guide channel 11. Under the guidance of the guide channel 11, it enters the space between the two rotating rollers 15. The motor 16 drives the right rotating shaft 13, gear 14 and rotating roller 15 to rotate. Since the diameter of the right gear 14 is larger than that of the left gear 14, the rotating gear 14 on the right drives the left gear 14 to rotate at different speeds. That is, the left and right gears 14 rotate at different speeds, thereby realizing that the left and right rollers 15 rotate at different speeds, so as to fully dehull the rice falling between the two rotating rollers 15.

[0046] The mixture after dehulling enters the first discharge trough 19 and the second discharge trough 20 through the feed inlet 17. Under the action of the blower 26, the lighter hulls are drawn upward to the inner cavity of the discharge channel 24, while the heavier dehulled grains enter the collection bin 21 along the second discharge trough 20 for subsequent discharge and collection.

[0047] By setting up the temporary storage bin 23, the rice husks that have been separated in the husk discharge channel 24 can be collected, preventing the rice husks that have been separated in the husk discharge channel 24 from entering the collection bin 21 under their own weight and mixing with the separated rice grains when the wind suddenly stops. The rice husks temporarily collected in the temporary storage bin 23 can be discharged upward through the husk outlet 25 by restarting the fan 26.

[0048] This invention enables adjustment of the size of the space at the bottom of the inner cavity of the feeding bin 4, thereby limiting the flow of rice fed into the feeding bin 4. This prevents the rice from entering the subsequent hulling process without restraint, which could cause congestion in the conveying channel and processing area. It ensures that the rice enters the hulling process in a limited and controlled manner, achieving the goal of complete hulling and guaranteeing the final quality of the hulled rice. In addition, by setting two rotating rollers 15 with different rotation speeds, a speed difference is created, making the friction and extrusion forces experienced by the rice as it passes through the rollers 15 more complex and diverse. This allows for more effective separation of the rice husk from the rice grain, thereby improving hulling efficiency and enabling the processing of more rice per unit time.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rice hulling machine, comprising a processing chamber (1), characterized in that: A support arm (2) is vertically installed on the processing box (1), and a support frame (3) is installed on the support arm (2). A feeding bin (4) is arranged in the vertical direction on the support frame (3). A flow limiting component for adjusting the flow rate in the feeding bin (4) is provided on the right side wall of the feeding bin (4). The flow limiting component includes a housing (5) fixedly installed on the right side wall of the feeding bin (4). A movable seat (6) is slidably arranged inside the housing (5). A groove (7) is opened at the connection between the feeding bin (4) and the housing (5). The movable seat (6) is slidably embedded in the inner cavity of the housing (5) and the groove (7). One end of a screw (8) is rotatably connected to the right side wall of the movable seat (6). The other end of the screw (8) extends out of the right side wall of the housing (5). One end of a limiting post (9) is vertically and fixedly installed on the right side wall of the movable seat (6). The other end of the limiting post (9) slides through the right side wall of the housing (5). A scale (10) is fixedly installed on the right side wall of the housing (5), and the scale (10) slides through the right side wall of the housing (5).

2. The rice hulling machine according to claim 1, characterized in that: The bottom output end of the feeding bin (4) is connected to one end of the material guiding channel (11), which is inclined downward from left to right.

3. A rice hulling machine according to claim 2, characterized in that: The processing box (1) is equipped with a shell removal component; The shell removal assembly includes four mounting seats (12) fixedly installed on the processing box (1). Two mounting seats (12) corresponding to each other are a group. A rotating shaft (13) is rotatably arranged between two mounting seats (12). A gear (14) and a rotating roller (15) are fixedly installed on each rotating shaft (13). A motor (16) is installed on the processing box (1) through a motor frame. The output end of the motor (16) is connected to the rotating shaft (13) on the right side. The diameter of the gear (14) on the left is smaller than the diameter of the gear (14) on the right.

4. A rice hulling machine according to claim 3, characterized in that: The bottom output end of the material guide channel (11) corresponds to the position of the gap between the two rotating rollers (15).

5. A rice hulling machine according to claim 3, characterized in that: The processing box (1) is equipped with a feed inlet (17) at the top, and the feed inlet (17) corresponds to the gap between the two rollers (15). The processing box (1) is equipped with a mounting plate (18) at the top of the inner wall. The mounting plate (18) is equipped with a first discharge trough (19) and a second discharge trough (20) on the right side of the mounting plate (18) at an angle downward. The processing box (1) is equipped with a collection bin (21) at the bottom right side of the inner cavity. The second discharge trough (20) corresponds to the collection bin (21).

6. A rice hulling machine according to claim 1, characterized in that: A temporary storage component is provided at the top of the inner cavity of the processing box (1); The temporary storage component includes a side plate (22) fixed and vertically installed on the top of the inner wall of the processing box (1), and a temporary storage compartment (23) is installed on the left side wall of the side plate (22).

7. A rice hulling machine according to claim 6, characterized in that: The top of the processing box (1) is connected to a shell discharge channel (24), the right side wall of the shell discharge channel (24) is connected to a shell outlet (25), the top of the shell discharge channel (24) is provided with a fan (26), and the two ends of the fan (26) are respectively connected to the inner cavity of the shell discharge channel (24) and the shell outlet (25).

8. A rice hulling machine according to claim 7, characterized in that: The temporary storage compartment (23) is located below the shell discharge channel (24).

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