Experimental rice huller

Abstract

The utility model discloses a rice huller, particularly discloses an experimental rice huller, and belongs to the technical field of design and manufacture of grain and oil detection equipment. According to the experimental rice huller, the grinding and extruding roller gap can be accurately adjusted. The experimental rice huller comprises a machine frame, a fixed rubber roller, a movable rubber roller and a rice hulling driving system, the fixed rubber roller and the movable rubber roller which are arranged on the machine frame in a mutually-adaptive mode are driven by the rice hulling driving system to rotate, and the experimental rice huller further comprises a grinding gap automatic quantitative adjusting system. And a grinding gap between the fixed rubber roller and the movable rubber roller is adjusted by driving the movable rubber roller to move by a specified distance in a corresponding direction through an automatic quantitative grinding gap adjusting system.

Description

Technical Field

[0001] The utility model relates to a rice huller, in particular to an experimental rice huller, and belongs to the technical field of design and manufacturing of grain and oil testing equipment. Background Art

[0002] The experimental rice huller is a mechanical device that removes the husks from rice grains, producing rough rice. It is an important tool for rice quality inspection and sample preparation. It has two rubber rollers rotating in opposite directions with a certain speed difference. A suitable gap is maintained between the fast and slow rollers. The rice passes through a feeding mechanism, where the differential speed and pressure between the two rollers crush away the husks, and the rice is then separated from the rough rice to produce a rough rice sample. The two rubber rollers of the rice huller are divided into a movable roller and a fixed roller. The fixed roller is fixed, while the movable roller is movable, allowing the rolling distance between the two rollers to be adjusted.

[0003] The wear of the hulling rollers and the distance between them directly affect the quality of brown rice processing and their lifespan. If the spacing between the rollers is too small, the rollers are prone to wear, causing the rice to break, resulting in increased rubber consumption and a higher rate of rough rice breakage. Excessive spacing leads to incomplete hulling and a reduced hulling rate. Over time, the rollers wear, increasing the distance between them. Adjusting the distance between the rollers is necessary to ensure proper hulling and a guaranteed hulling rate.

[0004] Although the rubber rollers on the current rice hulling machine can complete simple spacing adjustment, they cannot achieve adaptive spacing adjustment processing of their own wear. Therefore, during the long-term hulling process, the rubber rollers wear a lot, causing the spacing between the rubber rollers to increase, resulting in a decrease in the grain hulling rate and affecting the hulling effect.

[0005] Existing technologies for adjusting rice hulling rubber rollers are unable to accurately adjust the gap between the rollers. For example, manual adjustment using a screw is imprecise and relies heavily on experience. Adjustment using a hand-operated roller relies on a spring and the weight of the roller, effectively regulating the pressure between the rollers and failing to accurately adjust the gap. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an experimental rice huller which can adjust the gap between the milling rollers more accurately.

[0007] The technical solution adopted to solve the above technical problems is: an experimental rice huller, including a frame, a fixed rubber roller, a movable rubber roller and a rice hulling drive system. The fixed rubber roller and the movable rubber roller arranged on the frame in positions that adapt to each other are respectively 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 and the movable rubber roller is adjusted by the automatic quantitative adjustment system for the grinding gap, driving the movable rubber roller to move a specified distance in the corresponding direction.

[0008] Furthermore, the experimental rice husker also includes a belt adjustment device. The rice husker drive system includes a pulley, a transmission belt and a rice husker main motor. The rice husker main motor is fixed at the corresponding position of the frame. Pulleys are respectively arranged on the power input ends of the fixed rubber roller and the movable rubber roller. A pulley is also arranged at the power output end of the rice husker main motor. During the adjustment of the grinding gap between the fixed rubber roller and the movable rubber roller, the tightness of the transmission belt mounted on the three pulleys is adjusted and determined by the belt adjustment device.

[0009] The preferred embodiment of the above scheme is that the belt adjustment device includes a tensioning pulley, a support mounting part, a tensioning drive part and a mounting shaft, the tensioning pulley is movably arranged at the end of the support mounting part, and the support mounting part is movably arranged on the frame through the mounting shaft in cooperation with the tensioning drive part; the tightness of the transmission belt sleeved on the three pulleys is always in a tensioned state of a specified tension through the tensioning pulley in cooperation with the support mounting part and the tensioning drive part.

[0010] Furthermore, the support mounting part is composed of a support articulated arm, the tensioning drive part is composed of at least one pair of tensioning torsion springs, the tensioning wheel is movably arranged at the end of the support articulated arm, and the support articulated arm is rotatably arranged on the frame around the mounting shaft through the mounting shaft in cooperation with each pair of tensioning torsion springs; the tightness of the transmission belt sleeved on the three pulleys is always in a tensioned state of a specified tension through the tensioning wheel in cooperation with the tensioning torsion springs and the support articulated arm.

[0011] The preferred embodiment of the above scheme is that the automatic quantitative adjustment system for the rolling gap includes a quantitative adjustment drive device and a fixed installation connection structure, and the power output end of the quantitative adjustment drive device is connected to the fixed installation connection structure; the movable rubber roller moves according to the specified displacement and direction through the fixed installation connection structure in cooperation with the power output of the quantitative adjustment drive device to adjust the distance between it and the fixed rubber roller.

[0012] Furthermore, the quantitative adjustment drive device includes a drive motor, a fixed-pitch reduction regulator and a guide transmission assembly. The power input end of the fixed-pitch reduction regulator is connected to the power output end of the drive motor, and the power output end of the fixed-pitch reduction regulator is connected to the guide transmission assembly. The fixed installation connection structure is movably arranged on the guide transmission assembly.

[0013] The preferred embodiment of the above scheme is that the driving motor is composed of a stepper motor, the fixed-pitch reduction regulator is composed of a turbine-worm reducer, the turbine-worm 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 turbine-worm reducer.

[0014] Furthermore, the guide transmission assembly includes a trapezoidal thread screw and a positioning guide slide, and the fixed installation connection structure is movably arranged on the frame through the trapezoidal thread screw and the positioning guide slide, and the power input end of the trapezoidal thread screw is connected to the power output end of the turbine worm reducer.

[0015] The preferred embodiment of the above scheme is that the fixed installation connection structure includes a mounting frame, a screw seat and a guide seat, the screw seat and the guide seat are arranged on the mounting frame in a mutually adaptive manner, the fixed installation connection structure is connected to the movable rubber roller through the mounting frame, the trapezoidal thread screw is screwed onto the screw seat, and the positioning guide slide rod is inserted into the guide seat.

[0016] Furthermore, fixing seats are respectively provided at both ends of the trapezoidal thread lead screw and the positioning guide slide rod, and the trapezoidal thread lead screw and the positioning guide slide rod are respectively arranged on the frame through the corresponding fixing seats.

[0017] The beneficial effects of the present invention are as follows: the technical solution provided by the present application is based on the existing rice husker including a frame, a fixed rubber roller, a movable rubber roller and a rice husker drive system, and is combined with the structural characteristics that the fixed rubber roller and the movable rubber roller arranged on the frame are adapted to each other and are respectively driven to rotate by the rice husker drive system. By adding an automatic quantitative adjustment system for the grinding gap, the experimental rice husker of the present application is formed, and during the grinding production, the grinding gap between the fixed rubber roller and the movable rubber roller is adjusted by the automatic quantitative adjustment system for the grinding gap to move the movable rubber roller in the corresponding direction by a specified distance, so as to achieve more precise adjustment of the grinding gap, solving the technical problem in the prior art that the grinding gap between the fixed rubber roller and the movable rubber roller cannot be accurately adjusted, which not only ensures the reasonable pressure between the rollers, but also ensures the quality of rice husking, and at the same time better protects the rubber roller itself and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the experimental rice huller of the utility model;

[0019] Figure 2 This is another side three-dimensional structural diagram of the experimental rice huller of the utility model;

[0020] Figure 3 This is the main view of the experimental rice huller of the utility model;

[0021] Figure 4 for Figure 3 Top view of .

[0022] Marked in the figure are: frame 1, fixed rubber roller 2, movable rubber roller 3, pulley 4, transmission belt 5, rice hulling main motor 6, tensioning pulley 7, support mounting 8, mounting shaft 9, drive motor 10, fixed-pitch reduction adjuster 11, trapezoidal thread screw 12, positioning guide slide 13, mounting frame 14, screw seat 15, guide seat 16, and fixed seat 17. DETAILED DESCRIPTION

[0023] like Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 The present invention shows an experimental rice huller capable of relatively accurately adjusting the milling gap. The experimental rice huller comprises 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 positioned in a manner adapted to each other on the frame 1, are each driven to rotate by the rice hulling drive system. The experimental rice huller also includes an automatic quantitative milling gap adjustment system. The milling gap between the fixed rubber roller 2 and the movable rubber roller 3 is adjusted by the automatic quantitative milling gap adjustment system by driving the movable rubber roller 3 to move a specified distance in the corresponding direction. The technical solution provided by the present application is based on the existing rice husker including a frame, a fixed rubber roller, a movable rubber roller and a rice husker drive system, and is combined with the structural characteristics that the fixed rubber roller and the movable rubber roller arranged on the frame are adapted to each other and are driven to rotate by the rice husker drive system respectively. By adding an automatic quantitative adjustment system for the grinding gap, the experimental rice husker of the present application is formed. During the grinding production, the grinding gap between the fixed rubber roller and the movable rubber roller is adjusted by the automatic quantitative adjustment system for the grinding gap to move the movable rubber roller in the corresponding direction by a specified distance, so as to achieve more precise adjustment of the grinding gap, which solves the technical problem in the prior art that the grinding gap between the fixed rubber roller and the movable rubber roller cannot be accurately adjusted, and ensures the reasonable pressure between the rollers and the quality of rice husking. At the same time, it can better protect the rubber roller itself and extend its service life.

[0024] Accordingly, in order to maximize the adaptive adjustment function, that is, after adjusting the grinding gap between the fixed rubber roller 2 and the movable rubber roller 3, the tightness of the transmission belt can be adaptively adjusted. Combined with the rice hulling drive system including pulleys 4, transmission belts 5 and rice hulling main motor 6, the rice hulling main motor 6 is fixed at the corresponding position of the frame 1, and pulleys 4 are respectively arranged on the power input ends of the fixed rubber roller 2 and the movable rubber roller 3, and a pulley 4 is also arranged on the power output end of the rice hulling main motor 6. The present application also adds a belt adjustment device. During the grinding gap adjustment process between the fixed rubber roller 2 and the movable rubber roller 3, the tightness of the transmission belt 5 sleeved on the three pulleys 4 is adjusted and determined by the belt adjustment device. Specifically, the belt adjustment device includes a tensioning pulley 7, a support mounting member 8, a tensioning drive, and a mounting shaft 9. The tensioning pulley 7 is movably disposed at the end of the support mounting member 8, which is movably disposed on the frame 1 via the mounting shaft 9 in cooperation with the tensioning drive. The tensioning pulley 7, in cooperation with the support mounting member 8 and the tensioning drive, maintains the tension of the transmission belt 5 sleeved on the three pulleys 4 at a predetermined tension level. In this case, the support mounting member 8 is preferably formed by a support hinge arm, and the tensioning drive is preferably formed by at least one pair of tensioning torsion springs. The tensioning pulley 7 is movably disposed at the end of the support hinge arm, which is rotatably disposed on the frame 1 via the mounting shaft 9 in cooperation with the pair of tensioning torsion springs. The tensioning pulley 7, in cooperation with the tensioning torsion springs and the support hinge arm, maintains the tension of the transmission belt 5 sleeved on the three pulleys 4 at a predetermined tension level.

[0025] Furthermore, as a key structure improved in the present application, in order to guarantee the adjustment accuracy of the mill gap to the greatest extent possible while simplifying its structure as much as possible to facilitate manufacturing, use and subsequent repair and maintenance, the mill gap automatic quantitative adjustment system of the present application includes a quantitative adjustment drive device and a fixed installation connection structure, wherein the power output end of the quantitative adjustment drive device is connected to the fixed installation connection structure; the movable rubber roller 3 is adjusted to move the distance between it and the fixed rubber roller 2 according to the specified displacement and direction in cooperation with the output power of the quantitative adjustment drive device through the fixed installation connection structure. A more specific structure is that the quantitative adjustment drive device includes a drive motor 10, a fixed-pitch speed reducer 11 and a guide transmission assembly, wherein the power input end of the fixed-pitch speed reducer 11 is connected to the power output end of the drive motor 10, and the power output end of the fixed-pitch speed reducer 11 is connected to the guide transmission assembly, and the fixed installation connection structure is movably arranged on the guide transmission assembly. At this time, the preferred method is that the drive motor 10 is composed of a stepper motor, the fixed-pitch reduction regulator 11 is composed of a turbine reducer, the turbine 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 turbine reducer. The guide transmission assembly includes a trapezoidal thread screw 12 and a positioning guide slide 13. The fixed installation connection structure is movably arranged on the frame 1 through the trapezoidal thread screw 12 and the positioning guide slide 13 respectively. The power input end of the trapezoidal thread screw 12 is connected to the power output end of the turbine reducer. In accordance with the above structure, the fixed installation connection structure includes a mounting frame 14, a screw seat 15 and a guide seat 16. The 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 thread screw 12 is screwed onto the screw seat 15, and the positioning guide slide 13 is sleeved on the guide seat 16. At the same time, in order to facilitate installation and adjustment, fixed seats 17 are respectively provided at both ends of the trapezoidal thread screw 12 and the positioning guide slide 13, and the trapezoidal thread screw 12 and the positioning guide slide 13 are respectively arranged on the frame 1 through the corresponding fixed seats 17.

[0026] In summary, the technical solution of this application uses a motor and a screw to drive one of the rubber rollers to adjust the gap between the rubber rollers. If the transmission belt becomes tight or loose during the movement of the rubber rollers, a spring-loaded tensioner mechanism is used to adjust the tension, keeping the transmission belt in a constant state.

[0027] The technical solution of this application is further described below through specific embodiments:

[0028] Example 1

[0029] The main components are shown in the figure.

[0030] The process of adjusting the gap between the rubber rollers: The motor rotates to drive the screw to rotate, thereby driving the movable rubber roller component to move. A guide rod is installed on the lower side of the rubber roller for positioning and guidance.

[0031] The tensioner is equipped with a spring that automatically adjusts the belt tension by its elastic force, thus keeping the transmission belt in a tensioned state at all times.

[0032] After adjusting to the specified gap, the self-locking properties of the T-screw and the worm gear motor always keep it in a certain position.

[0033] The technical solution provided in this application can obtain the adjustment distance more accurately based on the structural characteristics of the stepper motor, the turbine reducer and the trapezoidal screw. The specific principle is that the moving distance s of the movable rubber roller = the number of motor rotations × the reduction ratio of the fixed-pitch reduction adjuster × the lead of the trapezoidal thread screw.

Claims

1. An experimental rice huller, comprising a frame (1), a fixed rubber roller (2), a movable rubber roller (3), and a rice hulling drive system, wherein the fixed rubber roller (2) and the movable rubber roller (3) arranged on the frame (1) and adapted to each other are respectively driven to rotate by the rice hulling drive system, and characterized in that: The experimental rice huller also includes an automatic quantitative adjustment system for the milling gap. The milling gap between the fixed rubber roller (2) and the movable rubber roller (3) is adjusted by the automatic quantitative adjustment system for the milling gap by driving the movable rubber roller (3) to move a specified distance in the corresponding direction.

2. The experimental rice huller according to claim 1, characterized in that: The experimental rice husking machine also includes a belt adjusting device. The rice husking drive system includes a pulley (4), a transmission belt (5) and a rice husking main motor (6). The rice husking main motor (6) is fixed at a corresponding position of the frame (1). Pulleys (4) are respectively arranged on the power input ends of the fixed rubber roller (2) and the movable rubber roller (3). A pulley (4) is also arranged on the power output end of the rice husking main motor (6). During the adjustment of the grinding gap between the fixed rubber roller (2) and the movable rubber roller (3), the tightness of the transmission belt (5) sleeved on the three pulleys (4) is adjusted and determined by the belt adjusting device.

3. The experimental rice huller according to claim 2, characterized in that: The belt adjusting device comprises a tensioning wheel (7), a supporting mounting member (8), a tensioning driving member and a mounting shaft (9); the tensioning wheel (7) is movably arranged at the end of the supporting mounting member (8); the supporting mounting member (8) is movably arranged on the frame (1) through the mounting shaft (9) in cooperation with the tensioning driving member; the tightness of the transmission belt (5) sleeved on the three pulleys (4) is always in a tensioned state of a specified tension through the tensioning wheel (7) in cooperation with the supporting mounting member (8) and the tensioning driving member.

4. The experimental rice huller according to claim 3, characterized in that: The support mounting member (8) is composed of a support hinge arm, the tension driving member is composed of at least one pair of tensioning torsion springs, the tensioning wheel (7) is movably arranged at the end of the support hinge arm, and the support hinge arm is rotatably arranged on the frame (1) around the mounting shaft (9) in cooperation with each pair of tensioning torsion springs through the mounting shaft (9); the tightness of the transmission belt (5) sleeved on the three pulleys (4) is always in a tensioned state of a specified tension through the tensioning wheel (7) in cooperation with the tensioning torsion springs and the support hinge arm.

5. The experimental rice huller according to claim 1, 2, 3 or 4, characterized in that: The automatic quantitative adjustment system for the rolling gap comprises a quantitative adjustment drive device and a fixed installation connection structure, wherein 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 displacement and direction through the fixed installation connection structure in cooperation with the output power of the quantitative adjustment drive device to adjust the spacing between the movable rubber roller (3) and the fixed rubber roller (2).

6. The experimental rice huller according to claim 5, characterized in that: The quantitative adjustment drive device comprises a drive motor (10), a fixed-pitch deceleration regulator (11) and a guide transmission assembly, wherein the power input end of the fixed-pitch deceleration regulator (11) is connected to the power output end of the drive motor (10), the power output end of the fixed-pitch deceleration regulator (11) is connected to the guide transmission assembly, and the fixed mounting connection structure is movably arranged on the guide transmission assembly.

7. The experimental rice huller according to claim 6, characterized in that: The driving motor (10) is composed of a stepping motor, and the fixed-pitch speed reducer (11) is composed of a turbine-vortex reducer. The turbine-vortex reducer is arranged on the power output end of the stepping motor, and the guide transmission component is connected to the power output end of the turbine-vortex reducer.

8. The experimental rice huller according to claim 7, characterized in that: The guide transmission assembly comprises a trapezoidal threaded screw (12) and a positioning guide slide (13); the fixed mounting connection structure is movably arranged on the frame (1) through the trapezoidal threaded screw (12) and the positioning guide slide (13); the power input end of the trapezoidal threaded screw (12) is connected to the power output end of the turbine worm reducer.

9. The experimental rice huller according to claim 8, characterized in that: The fixed installation connection structure comprises a mounting frame (14), a screw rod seat (15) and a guide seat (16). The screw rod 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 thread screw rod (12) is screwed on the screw rod seat (15), and the positioning guide slide rod (13) is sleeved on the guide seat (16).

10. The experimental rice huller according to claim 9, characterized in that: A fixing seat (17) is provided at both ends of the trapezoidal threaded screw rod (12) and the positioning guide slide rod (13), and the trapezoidal threaded screw rod (12) and the positioning guide slide rod (13) are respectively arranged on the frame (1) through the corresponding fixing seats (17).

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