Screening device for rice processing

Abstract

The utility model discloses a screening device for rice processing, which comprises a protective box, a screening box is fixedly connected to the inner bottom of the protective box, a first screening net is arranged in the screening box, a beating roller is arranged below the first screening net, the outer surface of the beating roller is fixedly connected with beating rubber, and the outer surface of the beating roller is fixedly connected with a second screening net. The two ends of the beating roller are fixedly connected with driven gears, and the two sides of the inner wall of the protection box are fixedly connected with sliding rails. A reciprocating cylinder is started, so that a movable plate slides in a U-shaped supporting frame in a reciprocating mode, two driving racks on the movable plate slide in sliding rails, the driving racks are matched with driven gears, two beating rollers rotate below a first screening net, beating rubber on the beating rollers beats the bottom of the first screening net, and the bottom of the first screening net is beaten. And the rice clamped in the first screening net is beaten out, so that the situation that the rice is clamped in screening net holes when the first screening net is used is reduced, and the screening efficiency of the equipment can be improved through the structure.

Description

Technical Field

[0001] This utility model relates to the technical field of rice screening equipment, specifically a screening device for rice processing. Background Technology

[0002] Rice, also known as paddy rice or rice paddy, is an edible grain. It is an annual herb that thrives in warm and humid conditions. In southern China, it is commonly called "rice" or "grain". The hulled grain is rice. However, during rice processing, screening devices are needed to separate impurities from the rice and to grade rice grains of different sizes to ensure the quality of the processed rice.

[0003] In the prior art, such as Chinese patent CN221086243U, a destone removal device for rice processing and screening is disclosed, which includes a main shell, a screening device, a feeding device, a storage device, a ventilation device, a cleaning device, a blowing device, a maintenance device, and a control panel. By setting up a telescopic vibrating rod, a large-hole screen and a small-hole screen, the rice passes through the large-hole screen and the small-hole screen to separate the stones, which significantly improves the screening quality, increases the work efficiency, and significantly reduces the time for screening rice.

[0004] Currently, most rice processing screening devices may have some rice grains with the same aperture size as the screening mesh during screening, causing some rice grains to get stuck in the mesh. Over time, this reduces the screening efficiency of the mesh, making it inconvenient to use. Utility Model Content

[0005] The purpose of this invention is to provide a screening device for rice processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screening device for rice processing, comprising a protective box, a screening box fixedly connected to the bottom of the protective box, a screening screen being provided inside the screening box, a beating roller being provided below the screening screen, a beating rubber being fixedly connected to the outer surface of the beating roller, driven gears being fixedly connected to both ends of the beating roller, sliding rails being fixedly connected to both sides of the inner wall of the protective box, drive racks being slidably connected to the inner walls of the two sliding rails, one side of the two drive racks respectively meshing with the outer surfaces of the two driven gears, a U-shaped support frame being fixedly connected to one side of the protective box, a reciprocating cylinder being fixedly installed on one side of the U-shaped support frame, a movable plate being fixedly connected to the output rod of the reciprocating cylinder, and the two sides of the movable plate being rotatably connected to one end of the two drive racks respectively.

[0007] As a further preferred embodiment of this technical solution, two mounting blocks are fixedly connected to both sides of the inner wall of the screening box, and a return spring is fixedly connected to the upper end of each of the four mounting blocks. One end of each of the four return springs is fixedly connected to the lower end of the first screening mesh. A vibration motor is fixedly installed in the middle of the lower end of the first screening mesh, and a second screening mesh is provided below the vibration motor.

[0008] As a further preferred embodiment of this technical solution, the lower middle part of the screening box is fixedly connected to an impurity hourglass, and the lower middle part of the protective box is provided with an impurity discharge trough, the inner wall of the impurity discharge trough being fixedly connected to the outer surface of the impurity hourglass.

[0009] As a further preferred embodiment of this technical solution, the upper end of the protective box is fixedly connected to a feeding hourglass, and one end of the feeding hourglass is fixedly connected to one side of the screening box.

[0010] As a further preferred embodiment of this technical solution, a driving device is fixedly installed on one side of the feeding hourglass, and a transmission mechanism is driven to the output end of the driving device. A mounting block is rotatably connected to the other side of the feeding hourglass, and a transmission shaft is fixedly connected to the middle of one side of the mounting block. One end of the transmission shaft is fixedly connected to the output end of the transmission mechanism. A rotating disk is rotatably connected to the other side of the feeding hourglass, and one end of the transmission shaft is fixedly connected to the middle of one side of the rotating disk.

[0011] As a further preferred embodiment of this technical solution, a lever is fixedly connected to one side of the rotating disk near its edge, and a shaped disk is rotatably connected to the middle of one side of the feeding hourglass. A plurality of lever grooves are formed on one side of the outer surface of the shaped disk, and the outer surface of the lever is slidably connected to the inner wall of any of the lever grooves. A feeding rack is fixedly connected to one side of the shaped disk, and the feeding rack is rotatably connected inside the feeding hourglass.

[0012] As a further preferred embodiment of this technical solution, a limiting disk is fixedly connected to the outer surface of the drive shaft, and multiple limiting grooves are opened on the other side of the outer surface of the irregularly shaped disk. The outer surface of the limiting disk is slidably connected to the inner wall of any of the limiting grooves.

[0013] This utility model provides a screening device for rice processing, which has the following beneficial effects:

[0014] (1) This utility model opens the reciprocating cylinder, so that the movable plate slides back and forth in the U-shaped support frame, so that the two drive racks on the movable plate slide in the sliding track. The cooperation between the drive racks and the driven gear makes the two beating rollers rotate below the first screen. The beating rubber on the beating rollers beats the bottom of the first screen, knocking out the rice stuck in the first screen, thereby reducing the rice from getting stuck in the screen holes when using the first screen. This structure can improve the screening efficiency of the equipment.

[0015] (2) By turning on the drive device, the rotating disk rotates under the drive of the transmission mechanism. During the rotation of the rotating disk, the actuating rod periodically enters the actuating groove, causing the irregularly shaped disk to rotate intermittently, thereby causing the feeding rack to rotate intermittently, realizing the intermittent feeding of rice. This can effectively prevent the screen from being blocked due to too much rice entering the screening box, thereby improving the screening efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the protective box in this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the screening box in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the protective box and the screening box in this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the feeding sand hourglass in this utility model;

[0021] In the diagram: 1. Protective box; 2. U-shaped support frame; 3. Reciprocating cylinder; 4. Movable plate; 5. Drive rack; 6. Sliding track; 7. Driven gear; 8. Beating roller; 9. Beating rubber; 10. Feeding hourglass; 11. Drive device; 12. Transmission mechanism; 13. Impurity feeding trough; 14. Screening box; 15. Screening mesh one; 16. Vibration motor; 17. Mounting block; 18. Return spring; 19. Screening mesh two; 20. Feeding rack; 21. Irregularly shaped disc; 22. Drive shaft; 23. Actuating rod; 24. Limiting disc; 25. Actuating groove; 26. Limiting groove; 27. Rotating disc; 28. Impurity hourglass. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figure 1- Figure 5 As shown, in this embodiment, a screening device for rice processing includes a protective box 1. A screening box 14 is fixedly connected to the bottom of the protective box 1. A screening screen 15 is provided inside the screening box 14. A beating roller 8 is provided below the screening screen 15. A beating rubber 9 is fixedly connected to the outer surface of the beating roller 8. Driven gears 7 are fixedly connected to both ends of the beating roller 8. Sliding rails 6 are fixedly connected to both sides of the inner wall of the protective box 1. A drive rack 5 is slidably connected to the inner wall of each of the two sliding rails 6. One side of each of the two drive racks 5 meshes with the outer surface of the two driven gears 7. A U-shaped support frame 2 is fixedly connected to one side of the protective box 1. A reciprocating cylinder 3 is installed, and the output rod of the reciprocating cylinder 3 is fixedly connected to a movable plate 4. The two sides of the movable plate 4 are respectively rotatably connected to one end of two drive racks 5. By opening the reciprocating cylinder 3, the movable plate 4 slides back and forth in the U-shaped support frame 2, so that the two drive racks 5 on the movable plate 4 slide in the sliding track 6. The cooperation between the drive racks 5 and the driven gear 7 causes the two beating rollers 8 to rotate below the screening screen 15. The beating rubber 9 on the beating rollers 8 beats the bottom of the screening screen 15, knocking out the rice stuck in the screening screen 15, thereby reducing the rice from getting stuck in the screen holes when using the screening screen 15. This structure can improve the screening efficiency of the equipment.

[0024] like Figure 4 As shown, two mounting blocks 17 are fixedly connected to both sides of the inner wall of the screening box 14. A return spring 18 is fixedly connected to the upper end of each of the four mounting blocks 17. One end of each of the four return springs 18 is fixedly connected to the lower end of the screening screen 15. A vibration motor 16 is fixedly installed in the middle of the lower end of the screening screen 15. A screening screen 2 19 is set below the vibration motor 16. Through the structural design of the screening screen 15 and the screening screen 2 19, rice can be graded and screened. A beating roller 8 and a beating rubber 9 are also set below the screening screen 2 19. The driving structure of the beating roller 8 is the same as that of the screening screen 15.

[0025] like Figure 2 and Figure 4 As shown, the lower middle part of the screening box 14 is fixedly connected to the impurity hourglass 28, and the lower middle part of the protective box 1 is provided with an impurity discharge trough 13. The inner wall of the impurity discharge trough 13 is fixedly connected to the outer surface of the impurity hourglass 28. Through the structural design of the impurity hourglass 28, the impurities screened from the rice are discharged from the equipment.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the upper end of the protective box 1 is fixedly connected to a feeding sand hourglass 10. One end of the feeding sand hourglass 10 is fixedly connected to one side of the screening box 14. Rice can be added into the screening box 14 for screening through the feeding sand hourglass 10.

[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a drive device 11 is fixedly installed on one side of the feeding sand hourglass 10. The output end of the drive device 11 is connected to a transmission mechanism 12. A mounting block 17 is rotatably connected to the other side of the feeding sand hourglass 10. A transmission shaft 22 is fixedly connected to the middle of one side of the mounting block 17. One end of the transmission shaft 22 is fixedly connected to the output end of the transmission mechanism 12. A rotating disk 27 is rotatably connected to the other side of the feeding sand hourglass 10. One end of the rotating disk 27 is fixedly connected to one end of the transmission shaft 22. Through the structural design of the drive device 11 and the transmission mechanism 12, the rotating disk 27 can be rotated.

[0028] like Figure 5 As shown, a lever 23 is fixedly connected to one side of the rotating disk 27 near its edge, and a shaped disk 21 is rotatably connected to the middle of one side of the feeding hourglass 10. Multiple actuation grooves 25 are opened on one side of the outer surface of the shaped disk 21. The outer surface of the lever 23 is slidably connected to the inner wall of any actuation groove 25. A feeding rack 20 is fixedly connected to one side of the shaped disk 21 and is rotatably connected inside the feeding hourglass 10. As the rotating disk 27 rotates, the lever 23 periodically enters the actuation groove 25, causing the shaped disk 21 to rotate intermittently, thereby causing the feeding rack 20 to rotate intermittently. This achieves intermittent feeding of rice, which can effectively prevent the screen from clogging due to too much rice entering the screening box 14, thereby improving the screening efficiency.

[0029] like Figure 5 As shown, a limiting disk 24 is fixedly connected to the outer surface of the drive shaft 22, and multiple limiting grooves 26 are opened on the other side of the outer surface of the irregular disk 21. The outer surface of the limiting disk 24 is slidably connected to the inner wall of any limiting groove 26. Through the structural design of the limiting groove 26 and the limiting disk 24, the irregular disk 21 can be limited to prevent skewing and improve stability.

[0030] This utility model provides a screening device for rice processing, the specific working principle of which is as follows:

[0031] When screening rice, the rice is first poured into the feeding hourglass 10. The drive device 11 causes the rotating disk 27 to rotate under the drive of the transmission mechanism 12. During the rotation of the rotating disk 27, the actuating rod 23 periodically enters the actuating groove 25, causing the irregularly shaped disk 21 to rotate intermittently, thereby causing the feeding rack 20 to rotate intermittently, feeding the rice intermittently. The intermittently fed rice enters the screening box 14. The vibration motor 16 below the screening screen 15 and screening screen 2 19 is turned on to screen the rice. During the screening process, the reciprocating cylinder 3 is activated, causing the movable plate 4 to slide back and forth within the U-shaped support frame 2. This causes the two drive racks 5 on the movable plate 4 to slide within the sliding track 6. The engagement of the drive racks 5 and the driven gear 7 causes the beating rollers 8 below the screening mesh 15 and screening mesh 29 to rotate within the screening box 14. The beating rubber 9 on the beating rollers 8 beats the bottom of the screening mesh 15, dislodging the rice stuck between the screening mesh 15 and screening mesh 29. Once the rice has passed through the screening mesh 15 and screening mesh 29, the rice screening is complete.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for rice processing, comprising a protective box (1), characterized in that: A screening box (14) is fixedly connected to the bottom of the inner side of the protective box (1). A screening screen (15) is provided inside the screening box (14). A beating roller (8) is provided below the screening screen (15). A beating rubber (9) is fixedly connected to the outer surface of the beating roller (8). Driven gears (7) are fixedly connected to both ends of the beating roller (8). Sliding rails (6) are fixedly connected to both sides of the inner wall of the protective box (1). A drive rack (5) is slidably connected to the inner wall of both sliding rails (6). One side of each drive rack (5) meshes with the outer surface of the two driven gears (7). A U-shaped support frame (2) is fixedly connected to the side. A reciprocating cylinder (3) is fixedly installed on one side of the U-shaped support frame (2). A movable plate (4) is fixedly connected to the output rod of the reciprocating cylinder (3). The two sides of the movable plate (4) are rotatably connected to one end of the two drive racks (5). Two mounting blocks (17) are fixedly connected to both sides of the inner wall of the screening box (14). A return spring (18) is fixedly connected to the upper end of each of the four mounting blocks (17). One end of each of the four return springs (18) is fixedly connected to the lower end of the first screening mesh (15). A vibration motor (16) is fixedly installed in the middle of the lower end of the first screening mesh (15).

2. The screening device for rice processing according to claim 1, characterized in that: A second screening screen (19) is provided below the vibration motor (16).

3. The screening device for rice processing according to claim 1, characterized in that: The lower middle part of the screening box (14) is fixedly connected to the impurity hourglass (28), and the lower middle part of the protective box (1) is provided with an impurity discharge trough (13). The inner wall of the impurity discharge trough (13) is fixedly connected to the outer surface of the impurity hourglass (28).

4. A screening device for rice processing according to claim 1, characterized in that: The upper end of the protective box (1) is fixedly connected to a feeding hourglass (10), and one end of the feeding hourglass (10) is fixedly connected to one side of the screening box (14).

5. A screening device for rice processing according to claim 4, characterized in that: A drive device (11) is fixedly installed on one side of the feeding hourglass (10). The output end of the drive device (11) is connected to a transmission mechanism (12). A mounting block (17) is rotatably connected to the other side of the feeding hourglass (10). A transmission shaft (22) is fixedly connected to the middle of one side of the mounting block (17). One end of the transmission shaft (22) is fixedly connected to the output end of the transmission mechanism (12). A rotating disk (27) is rotatably connected to the other side of the feeding hourglass (10). One end of the rotating disk (27) is fixedly connected to one end of the transmission shaft (22).

6. A screening device for rice processing according to claim 5, characterized in that: A lever (23) is fixedly connected to one side of the rotating disk (27) near the edge. A shaped disk (21) is rotatably connected to the middle of one side of the feeding hourglass (10). A plurality of lever grooves (25) are opened on one side of the outer surface of the shaped disk (21). The outer surface of the lever (23) is slidably connected to the inner wall of any of the lever grooves (25). A feeding rack (20) is fixedly connected to one side of the shaped disk (21). The feeding rack (20) is rotatably connected inside the feeding hourglass (10).

7. A screening device for rice processing according to claim 6, characterized in that: The outer surface of the drive shaft (22) is fixedly connected to a limiting disk (24), and a plurality of limiting grooves (26) are provided on the other side of the outer surface of the irregular disk (21). The outer surface of the limiting disk (24) is slidably connected to the inner wall of any of the limiting grooves (26).

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