Efficient soybean screening equipment capable of removing impurities

Abstract

The utility model relates to the field of soybean screening instruments, and discloses an efficient soybean screening device capable of removing impurities, which comprises a support frame, a first rotary drum, a second rotary drum and a third rotary drum, the third rotary drum is sleeved in the second rotary drum, the second rotary drum is sleeved in the first rotary drum, and a three-stage coaxial nested structure is formed; hemispherical grooves are uniformly formed in the inner wall of the third rotary drum, a net-shaped guide plate is installed on the upper portion in the third rotary drum in a penetrating mode, ventilation plates are fixed to the front end and the rear end of the bottom face of the guide plate respectively, and the rear ventilation plate is of a net-shaped structure; an air pump is fixed to the left side of the supporting frame and communicates with the front side ventilation plate through a connecting pipe. A supporting shaft is transversely installed on the top of the supporting frame, sleeved with the first rotating cylinder and in transmission connection with a second motor through a belt wheel and a belt. A first motor, a vibration motor and a guide cylinder are mounted on a right connecting plate of the support frame. Soybeans and impurities (such as stones and crushed stalks) are naturally layered under the action of gravity difference, and the screening effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of soybean screening equipment, and in particular to a high-efficiency soybean screening device that can remove impurities. Background Technology

[0002] Soybeans, as an important grain and oil crop, require efficient screening before processing to remove impurities (such as stones, broken stems, etc.) and broken particles. Traditional screening equipment mostly uses single-layer vibrating screens or air-powered separators, which suffer from low screening efficiency, incomplete impurity removal, and easy clogging. For example, in single-drum screening, soybeans and impurities are similar in physical properties, leading to insufficient separation accuracy; while simple air-powered separators have limited separation effect on light impurities and high energy consumption. In addition, the screen structure in existing equipment is prone to wear and the material flowability is poor, resulting in frequent maintenance and unstable screening quality. Although vibrating screens exist, direct use of vibrating screens causes more collisions between soybeans, resulting in damage and affecting the usability of soybeans. How to remove impurities and reduce damage during soybean screening is an important problem that needs to be solved. Therefore, there is an urgent need to design a high-efficiency soybean screening device that can remove impurities to solve the soybean screening problem. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a highly efficient soybean screening device capable of removing impurities.

[0004] This utility model is achieved through the following technical solution:

[0005] A high-efficiency soybean screening device for impurity removal includes a support frame, a first rotating drum, a second rotating drum, and a third rotating drum. The third rotating drum is nested inside the second rotating drum, and the second rotating drum is nested inside the first rotating drum, forming a three-level coaxial nested structure. The inner wall of the third rotating drum is uniformly provided with hemispherical grooves, and a mesh guide plate is installed through the upper part of the inner wall. Ventilation plates are fixed at the front and rear ends of the bottom of the guide plate, and the rear ventilation plate has a mesh structure. An air pump is fixed on the left side of the support frame, and the air pump is connected to the front ventilation plate through a connecting pipe. A support shaft is horizontally installed on the top of the support frame, and the first rotating drum is fitted outside the support shaft. The support shaft is connected to a second motor through a pulley and a belt. A first motor, a vibrating motor, and a guide cylinder are installed on the connecting plate on the right side of the support frame. The guide cylinder is connected to the third rotating drum through a feed inlet.

[0006] As a preferred embodiment of this utility model, the hemispherical groove on the inner wall of the third rotating cylinder has a depth of 3 to 5 mm and a groove spacing of 8 to 12 mm, and the groove surface is covered with a polyurethane wear-resistant layer; the guide plate is inclined at an angle of 15 to 25 degrees to the axis of the third rotating cylinder, and its mesh diameter is 2 to 3 mm and the mesh spacing is 5 to 8 mm.

[0007] As a preferred technical solution of this utility model, the inner wall of the first rotating drum is uniformly provided with grooves, and its two end faces are provided with annular outer edges with a width of five centimeters to limit the displacement of materials; the first rotating drum, the second rotating drum and the third rotating drum are staggered and fitted together, and the second rotating drum and the third rotating drum are linked with the first motor through a rotating wheel to achieve synchronous rotation.

[0008] As a preferred technical solution of this utility model, the connecting pipe is provided with a spiral guide plate to make the airflow output by the air pump form a vortex. The front ventilation plate is a closed air guide plate, and the mesh diameter of the rear ventilation plate is 1 to 2 mm, which is used to directionally discharge light impurities.

[0009] As a preferred embodiment of this utility model, the vibration motor is fixed to the top of the support rod and drives a vibration plate tilted at 30 to 45 degrees. The vibration plate extends into the interior of the first rotating drum, and the vibration frequency is adjustable from 800 to 1500 times per minute. The gap between the vibration plate and the inner wall of the first rotating drum is 10 to 15 millimeters.

[0010] As a preferred technical solution of this utility model, the surface of the inclined plate inside the feed cylinder is provided with a wave-shaped guide pattern, and the bottom of the feed cylinder is distributed through the first feed pipe and the second feed pipe. A rotatable feed valve is provided between the two feed pipes to switch the output path of impurities and soybeans.

[0011] As a preferred technical solution of this utility model, the support shaft and the support frame are connected by bearings, the transmission ratio of the second pulley to the first pulley is 1:1.5 to 1:2, and the inner side of the belt is provided with V-shaped anti-slip teeth to ensure transmission stability.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention significantly improves the efficiency and impurity removal accuracy of soybean screening through an innovative rotary drum screening and air-vibration linkage structure. Specifically, during operation, the three-stage nested rotary drums rotate coaxially at different speeds. The evenly distributed hemispherical grooves on their inner walls simulate the manual "digging and scattering" motion of screening, causing soybeans and impurities (such as stones and broken stems) to naturally separate under the influence of gravity: denser impurities remain in the grooves due to inertia, while soybeans roll down the inclined inner wall of the drum, achieving preliminary sorting. Simultaneously, an air pump directionally delivers a vortex-like airflow into the drum through a front ventilation plate. Lighter impurities (such as dust and empty shells) are discharged from the rear mesh ventilation plate under the impact of the airflow, completing airflow-assisted impurity removal. The material treated by the air screening then enters the vibrating screening stage. The inclined vibrating plates vibrate at a high frequency of 800-1500 times per minute, forcing residual fine impurities to separate through the mesh, while intact soybeans slide along the surface of the vibrating plates into the collection channel. This invention improves the screening effect of soybeans. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the guide plate of this utility model.

[0016] Figure 3 This is a schematic diagram of the third rotating drum and the ventilation plate of this utility model.

[0017] Figure 4 This is a side view of the first and second rotating cylinders of this utility model in cooperation.

[0018] Figure 5 This is a schematic diagram of the structure of the second and third rotating drums of this utility model.

[0019] In the diagram: 1. First rotating drum, 2. Vibrating plate, 3. Vibrating motor, 4. Support rod, 5. Rotary wheel, 6. First motor, 7. Guide cylinder, 8. First feed pipe, 9. Inclined plate, 10. Second feed pipe, 11. Mounting rod, 12. Connecting plate, 13. Feed port, 14. Second rotating drum, 15. Support plate, 16. Third rotating drum, 17. Connecting frame, 18. Ventilation plate, 19. Mounting block, 20. Connecting pipe, 21. Mounting rod, 22. Air pump, 23. Guide plate, 24. Support frame, 25. Support shaft, 26. First pulley, 27. Fixing frame, 28. Second motor, 29. Rotating shaft, 30. Second pulley, 31. Belt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution:

[0022] A high-efficiency soybean screening device capable of removing impurities includes a support frame 24, a first rotating drum 1, a second rotating drum 14, and a third rotating drum 16. The third rotating drum 16 is fitted inside the second rotating drum 14. The inner wall of the third rotating drum 16 is uniformly provided with hemispherical grooves. A guide plate 23 is provided above the interior of the third rotating drum 16, penetrating the interior of the third rotating drum 16. Ventilation plates 18 are installed at both ends of the bottom of the guide plate 23. The ventilation plate 18 on the rear side has a mesh structure, and the guide plate 23 also has a mesh structure. The structure includes a mounting rod 21 fixedly installed on the left side of the support frame 24, a mounting block 19 fixedly installed on the right end of the mounting rod 21, a connecting frame 17 symmetrically installed on the surface of the mounting block 19, a support plate 15 fixedly installed at the lower end of the connecting frame 17, an air pump 22 fixedly installed on the left side of the support frame 24, a connecting pipe 20 connecting the air pump 22 and the front ventilation plate 18, a support shaft 25 horizontally installed on the top of the support frame 24, a first rotating cylinder 1 sleeved on the support shaft 25, a first pulley 26 fitted on the left side of the support shaft 25, a fixing frame 27 fixedly installed on the upper side of the left side of the support frame 24, a second motor 28 fixedly installed at the top of the fixing frame 27, a rotating shaft 29 mounted on the right side of the second motor 28, a second pulley 30 fixedly fitted on the surface of the rotating shaft 29, a belt 31 fitted between the first pulley 26 and the second pulley 30, a connecting plate 12 fixedly installed on the right side of the support frame 24, a first motor 6 fixedly installed on the upper front side of the connecting plate 12, and a belt 31 fixedly fitted on the motor shaft of the first motor 6. The rotating wheel 5 and the connecting plate 12 are inclinedly fitted with a support rod 4 at the top right side. The support rod 4 is fixedly installed with a vibration motor 3 at the top. The vibration motor 3 is equipped with a vibration plate 2. The mounting rod 11 is fixedly installed in the middle of the right side of the connecting plate 12. The right end of the mounting rod 11 is fixedly installed with a guide cylinder 7. The bottom surface of the guide cylinder 7 is inclinedly fitted with an inclined plate 9. The right side of the guide cylinder 7 is fitted with a first material passage pipe 8. The bottom of the guide cylinder 7 is fitted with a second material passage pipe 10. The end of the guide cylinder 7 facing the guide plate is fitted with a material passage port 13.

[0023] The inner wall of the first rotating cylinder 1 is uniformly provided with grooves, and annular outer edges with a width of 5cm are provided at both ends of the first rotating cylinder 1.

[0024] The vibrating plate 2 is inclined and extends into the first rotating drum 1.

[0025] The rotating wheel 5 contacts the second rotating drum 14, and the second rotating drum 14 and the third rotating drum 16 rotate synchronously on the same axis, while the guide plate 23 and the ventilation plate 18 do not rotate.

[0026] A bearing is installed between the support shaft 25 and the support frame 24.

[0027] The first rotating drum 1 is staggered with the second rotating drum 14 and the third rotating drum 16.

[0028] The feed inlet 13 is connected to the interior of the third rotating drum 16.

[0029] Working principle: The material enters the third rotating drum 16 from the feed inlet 13 of the feed cylinder 7. The hemispherical grooves evenly distributed on the inner wall of the rotating drum rotate at 10-20 r / min under the drive of the motor, simulating the manual "digging-throwing" action. The soybeans and impurities (such as stones) are initially separated by gravity difference - heavy impurities are embedded in the grooves, and the soybeans slide down the mesh guide plate 23 with an inclination angle of 15-25°. Air pump 22 delivers a 5-8 m / s vortex airflow (with spiral guide vanes inside the pipe) to the front ventilation plate 18 via connecting pipe 20. Light impurities (broken leaves / dust) are blown to the rear mesh ventilation plate (1-2 mm mesh) and discharged, while soybeans continue to fall into the second rotating drum 14. The second rotating drum 14 is linked to the first rotating drum 1 via a pulley. Vibration motor 3 drives the 30-45° inclined vibrating plate 2 to vibrate at a high frequency of 800-1500 times / minute, forcing broken soybeans to fall through the screen holes of the rotating drum. Whole soybeans slide along the vibrating plate into the corrugated inclined plate of the guide cylinder 7 and are output through the first feed pipe 8. Residual impurities are discharged through the second feed pipe 10. The support shaft 25 reduces friction through bearings, and the V-shaped anti-slip toothed belt ensures stable transmission. The entire system achieves an impurity removal rate of ≥98% through the three-stage synergy of gravity stratification, airflow stripping, and vibration screening.

[0030] 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 high efficiency soybean screening device capable of removing impurities, comprising a support frame (24), a first rotating drum (1), a second rotating drum (14) and a third rotating drum (16), characterized in that: The third rotating cylinder (16) is fitted inside the second rotating cylinder (14). The inner wall of the third rotating cylinder (16) is uniformly provided with hemispherical grooves. A guide plate (23) is provided above the inside of the third rotating cylinder (16). The guide plate (23) runs through the third rotating cylinder (16). Ventilation plates (18) are installed at both the front and rear ends of the bottom of the guide plate (23). The ventilation plate (18) on the rear side has a mesh structure. The guide plate (23) has a mesh structure. An installation rod (21) is fixedly installed on the left side of the support frame (24). An installation rod (21) is fixedly installed on the right end of the installation rod (21). Block (19), with connecting brackets (17) symmetrically mounted on the surface of the mounting block (19), a support plate (15) fixedly mounted at the lower end of the connecting bracket (17), an air pump (22) fixedly mounted on the left side of the support frame (24), a connecting pipe (20) connecting the air pump (22) and the ventilation plate (18) at the front end, a support shaft (25) horizontally mounted on the top of the support frame (24), a first rotating cylinder (1) sleeved on the support shaft (25), a first pulley (26) sleeved on the left side of the surface of the support shaft (25), and a fixed upper part of the left side surface of the support frame (24) is provided. A fixed frame (27) is provided, and a second motor (28) is fixedly installed at the top of the fixed frame (27). A rotating shaft (29) is installed on the right side of the second motor (28). A second pulley (30) is fixedly fitted on the surface of the rotating shaft (29). A belt (31) is fitted between the first pulley (26) and the second pulley (30). A connecting plate (12) is fixedly installed on the right side of the support frame (24). A first motor (6) is fixedly installed on the upper front side of the connecting plate (12). A rotating wheel (5) is fixedly fitted on the motor shaft of the first motor (6). The right side of the connecting plate (12) A support rod (4) is inclined at the top, a vibration motor (3) is fixedly installed at the top of the support rod (4), a vibration plate (2) is installed on the vibration motor (3), an installation rod (11) is fixedly installed in the middle of the right side of the connecting plate (12), a guide cylinder (7) is fixedly installed at the right end of the installation rod (11), an inclined plate (9) is inclinedly installed on the bottom surface inside the guide cylinder (7), a first material passage pipe (8) is installed on the right side of the guide cylinder (7), a second material passage pipe (10) is installed at the bottom of the guide cylinder (7), and a material passage port (13) is installed at the end of the guide cylinder (7) facing the guide plate.

2. The high efficiency soybean screening apparatus of claim 1, wherein: The inner wall of the first rotating cylinder (1) is uniformly provided with grooves, and annular outer edges with a width of 5cm are provided at both ends of the first rotating cylinder (1).

3. The high efficiency soybean screening apparatus of claim 1, wherein: The vibrating plate (2) is inclined and extends into the first rotating drum (1).

4. The high efficiency soybean screening apparatus of claim 1, wherein: The rotating wheel (5) contacts the second rotating drum (14), and the second rotating drum (14) and the third rotating drum (16) rotate synchronously on the same axis, while the guide plate (23) and the ventilation plate (18) do not rotate.

5. The high efficiency soybean screening apparatus of claim 1, wherein: A bearing is installed between the support shaft (25) and the support frame (24).

6. The high efficiency soybean screening apparatus of claim 1, wherein: The first rotating drum (1) is staggered with the second rotating drum (14) and the third rotating drum (16).

7. The high efficiency soybean screening apparatus of claim 1, wherein: The feed inlet (13) is connected to the interior of the third rotating drum (16).

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