A rice huller structure capable of multi-stage shelling treatment

Abstract

The utility model discloses a kind of hulling machine structures that can realize multistage shelling processing, it is related to grain oil detection equipment design technical field, including rack, the inner bottom wall of the rack is fixedly provided with hulling main motor, the power output end of the hulling main motor is drivenly connected with tension pulley and belt pulley by transmission belt, the rear of the belt pulley is fixedly connected with mounting bracket, and the number of belt pulley is four, by rack, fixed rubber roller, movable rubber roller and hulling drive system as foundation, it retains the structural characteristics that fixed rubber roller and movable rubber roller are position adapted on rack, and are respectively driven to rotate by hulling drive system, and by additionally adding gap automatic quantitative adjusting system to realize improvement, in the process of rolling and extruding production, the adjusting system can drive movable rubber roller to move prescribed distance to corresponding direction, to accurately adjust the rolling and extruding gap between fixed rubber roller and movable rubber roller, avoid excessive pressure damage rubber roller or insufficient pressure affect rolling and extruding effect.

Description

Technical Field

[0001] This utility model relates to the field of grain and oil testing equipment design technology, and in particular to a rice huller structure that can realize multi-stage dehulling. Background Technology

[0002] A rice huller is a mechanical device used in paddy quality inspection and rice processing. It is mainly used to remove the husk (i.e., rice husk) from paddy and prepare brown rice samples. The paddy enters two rubber rollers through a feeding mechanism. The tough but nutritionally worthless husk is removed by the differential rotation and squeezing action of the rubber rollers. After the paddy is separated from the brown rice, brown rice is obtained. This process, known as "rice hulling," is the core bridge connecting paddy harvesting and fine milling. It needs to operate efficiently without crushing the rice grains. Its effect directly determines the subsequent rice yield and the integrity of the finished rice.

[0003] Although the rubber rollers on rice hullers can perform simple spacing adjustments, they cannot adapt to wear and tear to adjust the spacing accordingly. As a result, the rubber rollers wear out significantly during long-term hulling, causing the spacing between them to increase, which reduces the hulling effect and affects the hulling accuracy.

[0004] Existing rice hulling roller adjustment technology has significant shortcomings in the precise control of roller spacing. When using the manual adjustment method with a screw, the spacing adjustment accuracy depends entirely on the operator's experience, making it difficult to guarantee the accuracy of the spacing. The roller adjustment technology that uses a hand-operated pressure roller sets the roller pressure through the spring and the weight of the pressure roller, which is essentially a pressure adjustment solution and does not achieve precise control of the roller spacing.

[0005] Furthermore, the hopper outlet is prone to blockage, where rice grains get stuck together, forming a stable arched structure, causing interruptions or intermittent feeding, thus reducing its practicality. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings mentioned in the background section by proposing a rice huller structure capable of multi-stage hulling.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A rice huller structure capable of multi-stage hulling includes a frame. A main rice hulling motor is fixedly mounted on the inner bottom wall of the frame. The power output end of the main rice hulling motor is connected to a tension wheel and a pulley via a transmission belt. A mounting frame is connected to the rear of the pulley, and there are four pulleys. A support mounting component is fixedly mounted behind the tension wheel. An internal fixed connecting frame of the support mounting component has a mounting shaft. Three fixed rubber rollers are fixedly mounted at the front of the inner wall of the frame. A guide plate is fixedly mounted below the upper two fixed rubber rollers. A movable rubber roller is movably mounted below the guide plate on the right side, and the rear of the movable rubber roller is connected to the mounting frame.

[0008] Preferably, a drive motor is fixedly installed on the right side of the frame, a fixed distance reduction adjuster is fixedly installed above the drive motor, a fixed base is fixedly connected to the front of the fixed distance reduction adjuster, a trapezoidal threaded screw is installed in front of the fixed base, a screw seat is installed on the outer surface of the trapezoidal threaded screw, a positioning guide slide is installed below the trapezoidal threaded screw, a guide seat is installed on the outer surface of the positioning guide slide, and the guide seat and the mounting frame are connected in cooperation.

[0009] Preferably, a feeding bin is fixedly connected to the upper surface of the frame, a feeding cylinder is fixedly installed below the feeding bin, a support frame is fixedly connected to the outer surface of the feeding bin, and a second drive motor is fixedly installed at the middle position of the upper surface of the support frame.

[0010] Preferably, a drive rod is fixedly connected to the power output end of the second drive motor, and a stirring rod is fixedly connected to the lower surface of the drive rod, with the stirring rod located inside the feed hopper.

[0011] Preferably, a drive wheel is fixedly connected to the outer surface of the drive rod, and a transmission wheel is connected to the outer surface of the drive wheel via a transmission belt. A movable rod is fixedly connected to the lower surface of the transmission wheel, and a bevel gear is fixedly connected to the lower surface of the movable rod. A bevel gear is meshed with the outer surface of the bevel gear, and a movable rod is fixedly connected to the rear of the bevel gear. A rotating shaft is movably arranged at the rear of the movable rod, and the rear of the rotating shaft is connected to the rear of the inner wall of the feed cylinder. Two unloading plates are fixedly connected to the outer surface of the movable rod.

[0012] Preferably, a limiting groove is formed on the outer surface of the movable rod, a limiting frame is movably connected inside the limiting groove, and the rear of the limiting frame is fixedly connected to the front of the feeding hopper.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention is based on a frame, fixed rubber rollers, movable rubber rollers, and a rice hulling drive system. It retains the structural features of the fixed and movable rubber rollers being positioned on the frame and driven to rotate by the rice hulling drive system, and improves upon this by adding an automatic quantitative adjustment system for the milling gap. During the milling process, this adjustment system can drive the movable rubber roller to move a specified distance in the corresponding direction, thereby precisely adjusting the milling gap between the fixed and movable rubber rollers. This ensures that the pressure between the rollers is within a reasonable range, avoiding damage to the rubber rollers due to excessive pressure or affecting the milling effect due to insufficient pressure. It also stabilizes the quality of rice milling, reduces broken rice rate, and reduces excessive wear on the rubber rollers caused by improper gaps, effectively extending the service life of the rubber rollers. The stirring rod, driven by a second drive motor, inside the feeding hopper initially agitates the rice grains to prevent bridging. Furthermore, power is transmitted to the unloading plate inside the feeding cylinder via a drive wheel, transmission belt, transmission wheel, and bevel gears one and two, causing it to rotate. This design effectively clears the feeding path, ensuring a uniform and continuous flow of rice grains into the hulling area. This avoids fluctuations in hulling efficiency or machine blockage caused by uneven feeding, providing a prerequisite for high-quality single-pass hulling. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a structural diagram of a rice huller structure that can achieve multi-stage dehulling according to the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the mounting bracket structure proposed in this utility model; Figure 4 This is a schematic diagram of the fixed rubber roller structure proposed in this utility model; Figure 5 This is a schematic diagram of the movable rod structure proposed in this utility model.

[0016] In the diagram: 1. Frame; 2. Fixed rubber roller; 3. Movable rubber roller; 4. Pulley; 5. Conveyor belt; 6. Main rice hulling motor; 7. Tensioner wheel; 8. Support mounting component; 9. Mounting shaft; 10. Drive motor one; 11. Fixed distance reducer; 12. Trapezoidal threaded screw; 13. Positioning guide slide rod; 14. Mounting frame; 15. Screw seat; 16. Guide seat; 17. Fixed seat; 18. Feed hopper; 19. Feed cylinder; 20. Support frame; 21. Drive motor two; 22. Drive rod; 23. Drive wheel; 24. Transmission belt; 25. Transmission wheel; 26. Movable rod one; 27. Bevel gear one; 28. Bevel gear two; 29. ​​Movable rod two; 30. Rotating shaft; 31. Discharge plate; 32. Limiting groove; 33. Limiting frame; 34. Mixing rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0018] Reference Figure 1-5A rice huller structure capable of multi-stage hulling includes a frame 1. A main rice hulling motor 6 is fixedly mounted on the inner bottom wall of the frame 1. The power output end of the main rice hulling motor 6 is connected to a tension wheel 7 and pulleys 4 via a transmission belt 5. A mounting bracket 14 is connected to the rear of the pulleys 4, and there are four pulleys 4. A support mounting component 8 is fixedly mounted behind the tension wheel 7. The support mounting component 8 has a mounting shaft 9 fixedly connected to its internal fixed frame. Three fixed rubber rollers 2 are fixedly mounted on the front of the inner wall of the frame 1. A guide plate is fixedly mounted below the two upper fixed rubber rollers 2. A movable part is mounted below the right guide plate. A movable rubber roller 3 is connected to the mounting frame 14 at its rear. A drive motor 10 is fixedly mounted on the right side of the frame 1. A distance reduction adjuster 11 is fixedly mounted above the drive motor 10. A fixed seat 17 is fixedly connected to the front of the distance reduction adjuster 11. A trapezoidal threaded screw 12 is mounted in front of the fixed seat 17. A screw seat 15 is mounted on the outer surface of the trapezoidal threaded screw 12. A positioning guide slide 13 is mounted below the trapezoidal threaded screw 12. A guide seat 16 is mounted on the outer surface of the positioning guide slide 13, and the guide seat 16 is connected to the mounting frame 14. The upper surface of the frame 1... A feeding hopper 18 is fixedly connected, and a feeding cylinder 19 is fixedly installed below the feeding hopper 18. A support frame 20 is fixedly connected to the outer surface of the feeding hopper 18. A second drive motor 21 is fixedly installed at the middle position of the upper surface of the support frame 20. A drive rod 22 is fixedly connected to the power output end of the second drive motor 21. A stirring rod 34 is fixedly connected to the lower surface of the drive rod 22, and the stirring rod 34 is located inside the feeding hopper 18. A drive wheel 23 is fixedly connected to the outer surface of the drive rod 22. A transmission wheel 25 is driven to the outer surface of the drive wheel 23 via a transmission belt 24. A movable [unclear - possibly a component or material] is fixedly connected to the lower surface of the transmission wheel 25. A first rod 26 is fixedly connected to a bevel gear 27 on its lower surface. A second bevel gear 28 is meshed with the outer surface of the first bevel gear 27. A second movable rod 29 is fixedly connected to the rear of the second bevel gear 28. A rotating shaft 30 is movably arranged at the rear of the second movable rod 29, and the rear of the rotating shaft 30 is connected to the rear of the inner wall of the feed cylinder 19. Two unloading plates 31 are fixedly connected to the outer surface of the second movable rod 29. A limiting groove 32 is opened on the outer surface of the first movable rod 26. A limiting frame 33 is movably connected inside the limiting groove 32, and the rear of the limiting frame 33 is fixedly connected to the front of the feed bin 18. The experimental rice huller includes a frame 1, a fixed rubber roller 2, a movable rubber roller 3, and a rice hulling drive system. The fixed rubber roller 2 and the movable rubber roller 3, positioned adaptively on the frame 1, are driven to rotate by the rice hulling drive system. The experimental rice huller also includes an automatic grate adjustment system. The grate between the fixed rubber roller 2 and the movable rubber roller 3 is adjusted by driving the movable rubber roller 3 to move a predetermined distance in the corresponding direction through the automatic grate adjustment system. The technical solution provided in this application is based on an existing rice huller including a frame 1, a fixed rubber roller 2, a movable rubber roller 3, and a rice hulling drive system, and further incorporates the fixed rubber roller 2 and the movable rubber roller 3 positioned adaptively on the frame 1. The experimental rice huller of this application is constructed by adding an automatic quantitative adjustment system for the grinding gap, which drives the rotation of the fixed rubber roller 2 and the movable rubber roller 3 during the grinding and extrusion process. The automatic quantitative adjustment system for the grinding gap drives the movable rubber roller 3 to move a specified distance in the corresponding direction for adjustment, so as to achieve more precise adjustment of the grinding gap. This solves the technical problem in the prior art that it is impossible to accurately adjust the grinding gap between the fixed rubber roller 2 and the movable rubber roller 3. It not only ensures the reasonable pressure between the rollers, but also ensures the grinding quality of rice, and at the same time, it can better protect the rubber roller itself and extend its service life. Although the rubber rollers on rice hullers can perform simple spacing adjustments, they cannot adapt to wear and tear. As a result, the rubber rollers wear out significantly during long-term hulling, causing the spacing between them to increase, which reduces the hulling effect and affects the hulling accuracy. Existing rice hulling roller adjustment technologies cannot achieve accurate adjustment of the roller spacing. For example, when adjusting by manually rotating the screw, the spacing adjustment is inaccurate and mainly relies on human experience. The roller adjustment technology using a hand-pressed roller relies on the spring and the weight of the pressure roller, which is actually a roller pressure adjustment technology solution and does not accurately adjust the roller spacing. Furthermore, the hopper outlet is prone to blockage, where rice grains get stuck together, forming a stable arched structure, causing interruptions or intermittent feeding, thus reducing its practicality.

[0019] Start the main rice hulling motor 6 on the bottom wall of the frame 1. The conveyor belt 5 drives the tension wheel 7 and four pulleys 4 to rotate. The pulleys 4 are linked to the mounting frame 14 to provide rotational power for the fixed rubber roller 2 and the movable rubber roller 3. At the same time, start the right drive motor 10. The grinding gap between the fixed rubber roller 2 and the movable rubber roller 3 is preset by the distance reducer 11 according to the rice variety. For example, the gap for indica rice is slightly larger than that for japonica rice. Start the drive motor 21 on the support frame 20. Check whether the connection between the feed hopper 18 and the feed cylinder 19 is smooth and ensure that the stirring rod 34 and the discharge plate 31 are not stuck. Pour the rice to be hulled into the feed hopper 18. The drive motor 21 drives the stirring rod 34 to rotate through the drive rod 22 to prevent the rice from clumping and blocking in the hopper. When the drive rod 22 rotates, the drive wheel 23 on its outer surface drives the drive wheel 25 to rotate through the transmission belt 24, so that the movable rod 26 is in the position of the limit frame 33 and the... The rice rotates stably under the constraint of the limiting groove 32; the bevel gear 27 at the bottom of the movable rod 26 meshes with the bevel gear 28, driving the movable rod 29 and the rotating shaft 30 to rotate, ultimately causing the two unloading plates 31 in the feed cylinder 19 to rotate synchronously, evenly conveying the rice to the crushing area between the fixed rubber roller 2 and the movable rubber roller 3. The fixed rubber roller 2 and the movable rubber roller 3 rotate in opposite directions under the drive of the rice hulling main motor 6. After the rice enters the gap between the two rollers, it is crushed and hulled by friction. The support mounting part 8 and the mounting shaft 9 ensure the stable rotation of the rubber roller and avoid vibration affecting the hulling effect. If the crushing force needs to be adjusted during the hulling process, the drive motor 10 drives the trapezoidal threaded screw 12 to rotate through the fixed distance reduction adjuster 11, so that the screw seat 15 moves along the guide seat 16 on the positioning guide slide 13, thereby pushing the movable rubber roller 3 closer to or away from the fixed rubber roller 2, accurately adjusting the gap, and ensuring the hulling quality. The experimental rice huller includes a frame 1, a fixed rubber roller 2, a movable rubber roller 3, and a rice hulling drive system. The fixed rubber roller 2 and the movable rubber roller 3, which are arranged in mutually adaptive positions on the frame 1, are driven to rotate by the rice hulling drive system. The experimental rice huller also includes an automatic quantitative adjustment system for the grinding gap. The grinding gap between the fixed rubber roller 2 and the movable rubber roller 3 is adjusted by driving the movable rubber roller 3 to move a specified distance in the corresponding direction through the automatic quantitative adjustment system for the grinding gap.

[0020] The experimental rice huller also includes a belt adjustment device. The rice hulling drive system includes pulleys 4, a conveyor belt 5, and a main rice hulling motor 6. The main rice hulling motor 6 is fixedly mounted at the corresponding position on the frame 1. Pulleys 4 are arranged on the power input ends of the fixed rubber roller 2 and the movable rubber roller 3, and pulleys 4 are also arranged on the power output end of the main rice hulling motor 6. The tension of the conveyor belt 5, which is sleeved on the three pulleys 4, is adjusted and determined by the belt adjustment device.

[0021] The belt adjustment device includes a tension pulley 7, a support mounting part 8, a tension drive part, and a mounting shaft 9. The tension pulley 7 is movably arranged at the end of the support mounting part 8, and the support mounting part 8 is movably arranged on the frame 1 through the mounting shaft 9 in cooperation with the tension drive part. The tension of the transmission belt 5, which is sleeved on the three pulleys 4, is always kept at a specified tension by the tension pulley 7 in cooperation with the support mounting part 8 and the tension drive part. The support mounting component 8 consists of a support hinge arm, and the tensioning drive component consists of at least one tensioning spring. The tensioning wheel 7 is movably arranged at the end of the support hinge arm. The support hinge arm is rotatably arranged on the frame 1 around the mounting shaft 9 in cooperation with each pair of tensioning springs. The tension of the transmission belt 5, which is sleeved on the three pulleys 4, is always kept at a specified tension by the tensioning wheel 7 in cooperation with the tensioning springs and the support hinge arm. The automatic quantitative adjustment system for the gap includes a quantitative adjustment drive device and a fixed installation connection structure. The power output end of the quantitative adjustment drive device is connected to the fixed installation connection structure. The movable rubber roller 3 moves according to a specified distance and direction to adjust the gap between itself and the fixed rubber roller 2 through the fixed installation connection structure with the power output of the quantitative adjustment drive device. The quantitative adjustment drive device includes a drive motor 10, a fixed-pitch reduction regulator 11, and a guide transmission assembly. The power input end of the fixed-pitch reduction regulator 11 is connected to the power output end of the drive motor 10, and the power output end of the fixed-pitch reduction regulator 11 is connected to the guide transmission assembly. The fixed installation connection structure is movably arranged on the guide transmission assembly. The drive motor 10 consists of a stepper motor, and the fixed-pitch reduction regulator 11 consists of a worm gear reducer. The worm gear reducer is arranged on the power output end of the stepper motor, and the guide transmission assembly is connected to the power output end of the worm gear reducer. The guide transmission assembly includes a trapezoidal threaded screw 12 and a positioning guide slide 13. The fixed installation connection structure is movably arranged on the frame 1 through the trapezoidal threaded screw 12 and the positioning guide slide 13 respectively. The power input end of the trapezoidal threaded screw 12 is connected to the power output end of the worm gear reducer. The fixed installation connection structure includes a mounting frame 14, a lead screw seat 15, and a guide seat 16. The lead screw seat 15 and the guide seat 16 are arranged on the mounting frame 14 in a mutually adaptive manner. The fixed installation connection structure is connected to the movable rubber roller 3 through the mounting frame 14. The trapezoidal threaded lead screw 12 is screwed onto the lead screw seat 15, and the positioning guide slide rod 13 is sleeved on the guide seat 16. Fixed seats 17 are provided at both ends of the trapezoidal threaded screw 12 and the positioning guide slide 13, and the trapezoidal threaded screw 12 and the positioning guide slide 13 are respectively arranged on the frame 1 through the corresponding fixed seats 17.

[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A rice huller structure capable of multi-stage hulling, comprising a frame (1), characterized in that: The inner bottom wall of the frame (1) is fixedly equipped with a rice hulling main motor (6). The power output end of the rice hulling main motor (6) is connected to a tension wheel (7) and a pulley (4) via a transmission belt (5). A mounting frame (14) is connected to the rear of the pulley (4), and there are four pulleys (4). A support mounting component (8) is fixedly equipped to the rear of the tension wheel (7). The internal fixed connecting frame of the support mounting component (8) has a mounting shaft (9). Three fixed rubber rollers (2) are fixedly equipped to the front of the inner wall of the frame (1). A guide plate is fixedly equipped below the two upper fixed rubber rollers (2). A movable rubber roller (3) is movably equipped below the guide plate on the right side, and the rear of the movable rubber roller (3) is connected to the mounting frame (14).

2. The structure of a rice huller capable of multi-stage hulling according to claim 1, characterized in that, A drive motor (10) is fixedly installed on the right side of the frame (1). A fixed distance reduction regulator (11) is fixedly installed above the drive motor (10). A fixed seat (17) is fixedly connected to the front of the fixed distance reduction regulator (11). A trapezoidal threaded screw (12) is installed in front of the fixed seat (17). A screw seat (15) is installed on the outer surface of the trapezoidal threaded screw (12). A positioning guide slide (13) is installed below the trapezoidal threaded screw (12). A guide seat (16) is installed on the outer surface of the positioning guide slide (13). The guide seat (16) and the mounting bracket (14) are connected in cooperation.

3. The structure of a rice huller capable of multi-stage dehulling according to claim 1, characterized in that, The upper surface of the frame (1) is fixedly connected to a feeding bin (18), and a feeding cylinder (19) is fixedly installed below the feeding bin (18). A support frame (20) is fixedly connected to the outer surface of the feeding bin (18), and a second drive motor (21) is fixedly installed at the middle position of the upper surface of the support frame (20).

4. The structure of a rice huller capable of multi-stage dehulling according to claim 3, characterized in that, The power output end of the second drive motor (21) is fixedly connected to a drive rod (22), and a stirring rod (34) is fixedly connected to the lower surface of the drive rod (22), and the stirring rod (34) is located inside the feed hopper (18).

5. The structure of a rice huller capable of multi-stage dehulling according to claim 4, characterized in that, The outer surface of the drive rod (22) is fixedly connected to the drive wheel (23). The outer surface of the drive wheel (23) is connected to the transmission wheel (25) via the transmission belt (24). The lower surface of the transmission wheel (25) is fixedly connected to the movable rod one (26). The lower surface of the movable rod one (26) is fixedly connected to the bevel gear one (27). The outer surface of the bevel gear one (27) is meshed with the bevel gear two (28). The rear of the bevel gear two (28) is fixedly connected to the movable rod two (29). The rear of the movable rod two (29) is movably provided with a rotating shaft (30), and the rear of the rotating shaft (30) is connected to the rear of the inner wall of the feed cylinder (19). The outer surface of the movable rod two (29) is fixedly connected to two unloading plates (31).

6. The structure of a rice huller capable of multi-stage dehulling according to claim 5, characterized in that, The outer surface of the movable rod (26) is provided with a limiting groove (32), and the inside of the limiting groove (32) is movably connected to a limiting frame (33), and the rear of the limiting frame (33) is fixedly connected to the front of the feed hopper (18).

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