Agricultural soybean classification screening device
By designing a cone roller device for soybean grading screening, the function of real-time adjustment of screening gap is realized, and the problem of shutting down and manually adjusting screening gap in the prior art is solved, and the production efficiency and screening accuracy are improved.
Patent Information
- Application Number
- CN202510339957.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-05-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing soybean particle size screening technology, if the screening gap is required, it usually requires shutdown and manual adjustment, resulting in reduced production efficiency, increased labor costs and high operational complexity.
An agricultural soybean grading screening device is designed, adopting the coordinated rotation of the first conical roller shaft and the second conical roller shaft. Through the coordinated work of the driving component and the adjustment component, real-time adjustment is achieved without the need for manual adjustment by shutdown.
It improves the efficiency and accuracy of soybean sieving, reduces labor costs and operational complexity, adapts to the screening needs of soybeans of different particle sizes, and realizes the intelligence and automation of the screening process.
Smart Images
Figure CN119972530A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of soybean screening, and in particular to an agricultural soybean grading and screening device. Background Art
[0002] In agricultural production, soybeans are an important economic crop, and their grading and screening are key links in ensuring product quality and improving market competitiveness.
[0003] Traditional soybean grading and screening devices usually use fixed screens or roller gaps for screening. Although this can achieve a certain degree of particle size separation, there are certain problems in practical applications. For example, in the prior art, if the screening gap needs to be adjusted, it is usually necessary to stop the machine and adjust it manually, which not only reduces production efficiency, but also increases labor costs and operational complexity.
[0004] To sum up, how to solve the problem in the existing soybean particle size screening technology that if the screening gap needs to be adjusted, it is usually necessary to stop the machine and adjust it manually, which not only reduces production efficiency but also increases labor costs and operation complexity. It has become a difficult problem that needs to be solved urgently in this field. Therefore, it is necessary to propose an agricultural soybean grading and screening device. Summary of the invention
[0005] To solve the above problems, the present invention provides an agricultural soybean grading and screening device, which is used to achieve efficient grading and screening of soybean particle size, and to adjust the screening gap in real time during the screening process to avoid shutdown for manual adjustment, thereby improving production efficiency and reducing labor costs.
[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: an agricultural soybean grading and screening device, comprising a base, a plurality of support plates fixedly connected to the bottom of the base; a box body fixedly connected to the top of the base, a plurality of partitions fixedly connected to the inner wall of the box body, and the partitions divide the box body into a plurality of screening boxes.
[0007] The top of the box body is symmetrically fixedly connected with support plates, and a first conical roller shaft is arranged between adjacent support plates. Both ends of the first conical roller shaft penetrate the adjacent support plates and are rotatably matched with the adjacent support plates.
[0008] The support plates are all provided with slide grooves, and sliders are slidably matched in the slide grooves. A second tapered roller shaft is arranged between adjacent sliders, and both ends of the second tapered roller shaft penetrate the adjacent sliders and are rotationally matched with the adjacent sliders.
[0009] The first conical roller is provided with a driving assembly for driving the first conical roller and the second conical roller to rotate so as to screen soybeans of different particle sizes into the screening box respectively.
[0010] The support plates are each provided with an adjustment component for adjusting the gap between the first conical roller and the second conical roller in real time during the screening of soybean particle sizes.
[0011] The technical principles of the above scheme are as follows:
[0012] When the first conical roller and the second conical roller rotate in opposite directions, the soybeans can roll and move horizontally between the first conical roller and the second conical roller. When the soybeans roll between the rollers, the beans with smaller particle sizes fall into the screening box below through the gap between the rollers, while the beans with larger particle sizes continue to roll forward until they fall into the corresponding screening box. The design of the conical roller allows the gap to gradually increase from the inlet to the outlet, thereby achieving multi-stage screening.
[0013] The driving assembly drives the first conical roller to rotate, and the first conical roller transmits power to the second conical roller through a gear transmission system, so that the two rollers rotate synchronously to drive the soybeans to roll between the rollers.
[0014] The adjustment component can change the gap between the two rollers to meet the screening requirements of soybeans with different particle sizes. The adjustment process does not require stopping the machine and can be carried out in real time.
[0015] The above scheme has the following beneficial effects:
[0016] 1. The present invention uses the coordinated rotation of the first tapered roller and the second tapered roller. When the soybeans roll between the rollers, the soybeans with smaller particle sizes fall into the screening box below through the gap, while the soybeans with larger particle sizes continue to roll to the corresponding screening box. The design of the tapered roller makes the gap gradually increase from the inlet to the outlet, realizing multi-stage screening and improving screening efficiency and accuracy.
[0017] 2. The present invention uses the design of the adjustment component so that the operator can adjust the gap between the first tapered roller and the second tapered roller in real time during the screening process without stopping the machine for manual adjustment. This not only improves production efficiency, but also reduces labor costs and operational complexity, and meets the screening needs of soybeans with different particle sizes.
[0018] 3. The present invention can dynamically adjust the screening parameters through the coordinated work of the driving component and the regulating component, realize the intelligence and automation of the screening process, and further improve the production efficiency and screening effect.
[0019] Furthermore, the driving assembly includes an L-shaped support rod and a controller, and the bottom of the vertical end of the L-shaped support rod is fixedly connected to the top of the base.
[0020] A driving member is fixedly connected to one side wall of the vertical end of the L-shaped support rod, and an output shaft of the driving member is coaxially fixedly connected to one end of the first tapered roller shaft. The controller is used to control the rotation of the output shaft of the driving member to drive the rotation of the first tapered roller shaft.
[0021] A first gear is coaxially fixedly connected to an end of the first conical roller shaft close to the driving member, the first gear is meshed with a second gear, and the second gear rotates with a support plate adjacent to it; a first connecting rod is hingedly connected to a side wall of the second gear away from the support plate, and an end of the first connecting rod away from the second gear is rotationally matched with a third gear, and the third gear meshes with the second gear; a second connecting rod is hingedly connected to the first connecting rod, and an end of the second connecting rod away from the first connecting rod is rotationally matched with a fourth gear, the fourth gear meshes with the third gear, and the fourth gear is coaxially fixedly connected to an end of the second conical roller shaft adjacent to it.
[0022] A delivery component for delivering soybean grains between the first conical roller shaft and the second conical roller shaft is arranged on the top of the horizontal end of the L-shaped support rod.
[0023] Beneficial effect: The transmission system composed of gears and connecting rods is used to stably transmit the power of the first conical roller to the second conical roller, ensuring the synchronous opposite rotation of the two rollers, and ensuring that the soybeans can roll between the first conical roller and the second conical roller during the rolling screening process between the rollers, thereby realizing the horizontal movement of the soybeans between the rollers.
[0024] Furthermore, the adjustment assembly includes screws fixedly connected to the side walls of the slider, the ends of the screws away from the slider penetrate the support plate and cooperate with the support plate threads; the ends of the screws away from the slider are coaxially fixedly connected to a turntable.
[0025] Beneficial effect: By rotating the screw rod, the slider can be pushed to slide in the slide slot, thereby changing the gap between the two rollers. The adjustment process is simple and does not require stopping the machine for operation.
[0026] Furthermore, the feeding assembly includes a feeding trough, the bottom of which is fixedly connected to the top of the horizontal end of the L-shaped support rod, the bottom of the L-shaped support rod is fixedly connected to a feeding pipe, the feeding pipe is connected to the bottom of the feeding trough, and the bottom of the feeding pipe is located above between the first conical roller shaft and the second conical roller shaft.
[0027] Beneficial effects: The design of the feeding trough and feeding pipe enables soybeans to enter the screening area evenly and continuously, avoiding material accumulation or blockage and ensuring the smooth progress of the screening process.
[0028] Furthermore, the side walls of the screening box are fixedly connected with an inclined discharge pipe.
[0029] Beneficial effect: The inclined discharging pipe facilitates the automatic outflow of the screened soybeans, and the operator can collect the screened soybeans.
[0030] Furthermore, the first tapered roller shaft and the second tapered roller shaft are both made of stainless steel.
[0031] Beneficial effect: When the first conical roller and the second conical roller rotate in opposite directions, the soybeans can roll between the first conical roller and the second conical roller. The stainless steel material has a low friction coefficient, which can facilitate smooth rolling and horizontal movement of the soybeans between the rollers and prevent the soybeans from getting stuck between the rollers.
[0032] Furthermore, a plurality of universal wheels are fixedly connected to the bottom of the support plate.
[0033] Beneficial effects: The design of universal wheels makes the device easy to move and fix, suitable for different working scenes, and improves the flexibility and practicality of the device.
[0034] Furthermore, a woven collecting bag is detachably connected to the bottom end of the discharge pipe.
[0035] Benefits: The detachable woven collection bag makes it easy to collect the sieved soybeans.
[0036] Furthermore, a weight sensor is fixedly connected to the bottom wall of the screening box, and the controller is used to receive a weight signal of the soybeans in the screening box sent by the weight sensor, and control the operation of the driving component based on the weight signal.
[0037] Beneficial effect: The weight sensor monitors the weight of the soybeans in the screening box in real time and feeds the data back to the controller. When the weight of the soybeans reaches the required weight, the controller sends a control signal to control the drive to stop running.
[0038] Furthermore, the screening box is provided with a dust collecting component for collecting dust and light impurities raised by the soybeans when the soybeans are screened.
[0039] The dust suction component comprises a vacuum pump; the side walls of the screening box are connected with dust suction pipes, the dust suction pipes are connected with the input end of the vacuum pump, and the controller is used to control the opening and closing of the vacuum pump.
[0040] Beneficial effects: The dust suction component absorbs dust and light impurities raised during the screening process through a vacuum pump and a dust suction pipe, keeping the working environment clean and improving the screening quality and product purity of soybeans.
[0041] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] Figure 1 It is an axonometric diagram of the agricultural soybean grading and screening device of the present invention.
[0043] Figure 2 It is a top cross-sectional view of the agricultural soybean grading and screening device of the present invention.
[0044] Figure 3 for Figure 2 Sectional view along AA direction.
[0045] The figure marks in the drawings of the specification include: 1. base; 2. support plate; 3. box body; 4. partition; 5. screening box; 6. first conical roller; 7. slider; 8. second conical roller; 9. L-shaped support rod; 10. driving member; 11. first gear; 12. second gear; 13. first connecting rod; 14. third gear; 15. second connecting rod; 16. fourth gear; 17. screw; 18. turntable; 19. feeding trough; 20. discharge pipe; 21. support leg. DETAILED DESCRIPTION
[0046] The following is further described in detail through specific implementation methods:
[0047] Embodiment 1:
[0048] As attached Figure 1-Figure 3 As shown: an agricultural soybean grading and screening device, including a base 1, a plurality of legs 21 are fixedly connected to the bottom of the base 1 by bolts; a box body 3 is fixedly connected to the top of the base 1 by bolts, and a plurality of partitions 4 are integrally formed on the inner side wall of the box body 3, and the partitions 4 divide the box body 3 into a plurality of screening boxes 5.
[0049] The top of the box body 3 is symmetrically connected with support plates 2 by bolts, and a first conical roller shaft 6 is provided between adjacent support plates 2. Both ends of the first conical roller shaft 6 penetrate the adjacent support plates 2 and are rotatably matched with the adjacent support plates 2.
[0050] The support plates 2 are each provided with a slide groove, in which a slider 7 is slidably fitted, a second tapered roller shaft 8 is provided between adjacent sliders 7, and both ends of the second tapered roller shaft 8 penetrate the adjacent slider 7 and are rotationally fitted with the adjacent slider 7.
[0051] The first conical roller 6 is provided with a driving assembly for driving the first conical roller 6 and the second conical roller 8 to rotate so as to screen soybeans of different particle sizes into the screening box 5 respectively.
[0052] The support plates 2 are each provided with an adjustment component for adjusting the gap between the first conical roller 6 and the second conical roller 8 in real time during the screening process of soybean particle size.
[0053] The driving assembly includes an L-shaped support rod 9 and a controller. The bottom of the vertical end of the L-shaped support rod 9 is fixedly connected to the top of the base 1 by bolts.
[0054] A driving member 10 is fixedly connected to one side wall of the vertical end of the L-shaped support rod 9 by bolts. The output shaft of the driving member 10 is coaxially fixedly connected to one end of the first tapered roller shaft 6. The controller is used to control the output shaft of the driving member 10 to rotate to drive the first tapered roller shaft 6 to rotate.
[0055] A first gear 11 is coaxially integrally formed on one end of the first conical roller shaft 6 close to the driving member 10, and the first gear 11 is meshed with a second gear 12, and the second gear 12 is rotatably matched with the support plate 2 adjacent thereto; a first connecting rod 13 is hingedly connected to a side wall of the second gear 12 away from the support plate 2, and an end of the first connecting rod 13 away from the second gear 12 is rotatably matched with a third gear 14, and the third gear 14 is meshed with the second gear 12; a second connecting rod 15 is hingedly connected to the first connecting rod 13, and an end of the second connecting rod 15 away from the first connecting rod 13 is rotatably matched with a fourth gear 16, and the fourth gear 16 is meshed with the third gear 14, and the fourth gear 16 is coaxially integrally formed with one end of the second conical roller shaft 8 adjacent thereto.
[0056] A delivery assembly for delivering soybean grains between the first conical roller 6 and the second conical roller 8 is provided at the top of the horizontal end of the L-shaped support rod 9 .
[0057] The adjusting assembly includes screws 17 fixedly connected to the side wall of the slider 7 by bolts. The ends of the screws 17 away from the slider 7 penetrate the support plate 2 and are threadedly matched with the support plate 2. The ends of the screws 17 away from the slider 7 are coaxially fixedly connected to a turntable 18 by bolts.
[0058] The feeding assembly includes a feeding trough 19, the bottom of the feeding trough 19 and the top of the horizontal end of the L-shaped support rod 9 are fixedly connected by bolts, and a feeding pipe is fixedly connected to the bottom of the L-shaped support rod 9, and the feeding pipe is connected to the bottom of the feeding trough 19, and the bottom of the feeding pipe is located above the first conical roller shaft 6 and the second conical roller shaft 8.
[0059] The bottom end of the discharge pipe 20 is detachably connected with a woven collection bag.
[0060] The side walls of the screening box 5 are integrally formed with an inclined discharge pipe 20 .
[0061] The bottom wall of the screening box 5 is fixedly connected with a weight sensor by screws. The controller is used to receive the weight signal of the soybeans in the screening box 5 sent by the weight sensor, and control the operation of the driving member 10 based on the weight signal.
[0062] The specific implementation process is as follows:
[0063] by Figure 1 and Figure 3For example, the operator turns on the controller, and the controller controls the output shaft of the driving member 10 to rotate clockwise, and the output shaft of the driving member 10 drives the first conical roller 6 to rotate clockwise. In this embodiment, the driving member 10 is a reduction motor. As the first conical roller 6 rotates, the first gear 11 thereon also rotates synchronously clockwise, and the first gear 11 drives the second gear 12 meshed therewith to rotate counterclockwise. While the second gear 12 rotates on the support plate 2, since the third gear 14 meshes with the second gear 12, the third gear 14 can rotate clockwise on the first connecting rod 13, and since the third gear 14 meshes with the fourth gear 16, the fourth gear 16 can rotate counterclockwise on the second connecting rod 15. Since the fourth gear 16 is coaxially integrated with one end of the second conical roller 8, the second conical roller 8 rotates counterclockwise at this time, thereby realizing the synchronous reverse rotation of the second conical roller 8 and the first conical roller 6.
[0064] by Figure 1 and Figure 2 For example, soybeans are poured into the feeding trough 19, and the soybeans fall between the first conical roller 6 and the second conical roller 8 through the bottom of the feeding pipe. Since the two rollers rotate synchronously in opposite directions, the soybeans begin to roll and move horizontally in the gap between the first conical roller 6 and the second conical roller 8. During the rolling process, the beans with smaller particle sizes pass through the gradually increasing gap between the two rollers and fall into the corresponding screening box 5 below; the beans with larger particle sizes continue to roll forward until they fall into the appropriate screening box 5. Under the action of gravity, the soybeans in the screening box 5 automatically flow into the woven collection bag detachably connected to the bottom of the discharging pipe 20 through the inclined discharging pipe 20.
[0065] by Figure 2 and Figure 3For example, during the screening process, if the screening gap needs to be adjusted, the operator does not need to stop the machine, but only needs to turn the rotary disk 18 by hand. At this time, the rotary disk 18 drives the screw 17 to rotate. Since the screw 17 is threadedly matched with the support plate 2, the rotation of the screw 17 drives the slider 7 to slide in the slide groove of the support plate 2, thereby changing the gap between the first conical roller 6 and the second conical roller 8 to meet the screening needs of soybeans with different particle sizes. For example, when it is necessary to screen out soybeans with smaller particle sizes, the rotary disk 18 is rotated clockwise, and the screw 17 drives the slider 7 to slide in the direction close to the first conical roller 6. Since both ends of the second conical roller 8 and the slider 7 rotate and cooperate, the second conical roller 8 moves in the direction close to the first conical roller 6, thereby reducing the gap between the first conical roller 6 and the second conical roller 8, so that beans with smaller particle sizes can pass through the gap and fall into the corresponding screening box 5; on the contrary, when it is necessary to screen soybeans with larger particle sizes, the rotary disk 18 is rotated counterclockwise, and the screw 17 drives the slider 7 to slide in the direction close to the first conical roller 6. Block 7 slides in the direction away from the first conical roller 6 to increase the gap between the two rollers to meet the screening requirements for large-diameter soybeans. At the same time, when the operator adjusts the gap between the first conical roller 6 and the second conical roller 8, due to the limiting effect of the first connecting rod 13 and the second connecting rod 15, even when adjusting the gap between the first conical roller 6 and the second conical roller 8, the first gear 11, the second gear 12, the third gear 14 and the fourth gear 16 can always remain engaged, thereby ensuring that the first conical roller 6 and the second conical roller 8 can continue to stably and synchronously rotate in opposite directions. This ensures that during the entire screening process, no matter how the gap is adjusted, the rolling screening of the soybeans between the rollers will not be affected, and they can always roll smoothly along the first conical roller 6 and the second conical roller 8 and achieve horizontal movement, thereby maintaining efficient screening operations.
[0066] The operator sets a preset value of the weight of the soybeans to be collected through the controller. During the screening process, the weight sensor on the bottom wall of the screening box 5 monitors the weight of the soybeans in the screening box 5 in real time and sends a weight signal to the controller. When the weight of the soybeans in one of the screening boxes 5 reaches the preset value, the controller receives the weight signal and then sends a control signal to the reduction motor, which stops running and reminds the operator to replace the full woven collection bag or perform other subsequent processing.
[0067] After all the soybeans are screened, the operator turns off the controller, the reduction motor stops working, the first conical roller 6 and the second conical roller 8 stop rotating, and the entire screening operation is finished. At this time, the woven collection bag can be removed to carry the screened soybeans.
[0068] Embodiment 2:
[0069] As attached Figure 1 As shown, the difference from Example 1 is that the first tapered roller shaft 6 and the second tapered roller shaft 8 are both made of stainless steel.
[0070] The specific implementation process is as follows:
[0071] When the first conical roller 6 and the second conical roller 8 rotate in opposite directions, the soybeans can roll between the first conical roller 6 and the second conical roller 8. The stainless steel material has a low friction coefficient, which can facilitate smooth rolling and horizontal movement of the soybeans between the rollers and prevent the soybeans from getting stuck between the rollers.
[0072] Embodiment 3:
[0073] The difference from the second embodiment is that the bottom of the supporting legs 21 are fixedly connected with a plurality of universal wheels by bolts.
[0074] The specific implementation process is as follows:
[0075] The design of universal wheels makes the device easy to move and fix, suitable for different working scenes, and improves the flexibility and practicality of the device.
[0076] Embodiment 4:
[0077] The difference from Example 3 is that a dust collecting component is provided on the screening box 5 for collecting dust and light impurities raised by the soybeans when the soybeans are screened.
[0078] The dust suction component includes a vacuum pump; the side walls of the screening box 5 are connected with dust suction pipes, the dust suction pipes and the input end of the vacuum pump are connected, and the controller is used to control the opening and closing of the vacuum pump.
[0079] The specific implementation process is as follows:
[0080] During the whole screening process, the controller starts the vacuum pump in time according to the screening situation. The vacuum pump absorbs the dust and light impurities raised by the soybeans during the screening process through the dust suction pipe connected to the side wall of the screening box 5, keeps the working environment clean, and improves the screening quality of the soybeans and the purity of the product. When the screening operation is completed or dust suction is not needed, the controller controls the vacuum pump to stop working.
[0081] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.
Claims
1. An agricultural soybean grading and screening device, characterized in that: It comprises a base (1), wherein the bottom of the base (1) is fixedly connected to a plurality of legs (21); the top of the base (1) is fixedly connected to a box body (3), the inner side wall of the box body (3) is fixedly connected to a plurality of partitions (4), and the partitions (4) divide the box body (3) into a plurality of screening boxes (5); The top of the box body (3) is symmetrically fixedly connected with a support plate (2), and a first conical roller shaft (6) is provided between adjacent support plates (2). Both ends of the first conical roller shaft (6) penetrate the adjacent support plates (2) and are rotatably matched with the adjacent support plates (2). The support plates (2) are each provided with a slide groove, in which a slider (7) is slidably fitted, a second tapered roller shaft (8) is provided between adjacent sliders (7), and both ends of the second tapered roller shaft (8) penetrate the adjacent sliders (7) and are rotatably fitted with the adjacent sliders (7); The first conical roller (6) is provided with a driving assembly for driving the first conical roller (6) and the second conical roller (8) to rotate so as to screen soybeans of different particle sizes into the screening box (5) respectively; The support plates (2) are each provided with an adjustment component for adjusting the gap between the first conical roller (6) and the second conical roller (8) in real time during the process of screening the soybean particle size.
2. The agricultural soybean grading and screening device according to claim 1, characterized in that: The driving assembly comprises an L-shaped support rod (9) and a controller, wherein the bottom of the vertical end of the L-shaped support rod (9) is fixedly connected to the top of the base (1); A driving member (10) is fixedly connected to one side wall of the vertical end of the L-shaped support rod (9); an output shaft of the driving member (10) is coaxially fixedly connected to one end of the first tapered roller shaft (6); and a controller is used to control the output shaft of the driving member (10) to rotate so as to drive the first tapered roller shaft (6) to rotate; A first gear (11) is coaxially fixedly connected to one end of the first tapered roller shaft (6) close to the driving member (10), the first gear (11) is meshed with a second gear (12), and the second gear (12) is rotationally matched with the support plate (2) adjacent thereto; a first connecting rod (13) is hingedly connected to a side wall of the second gear (12) away from the support plate (2), and a third gear (14) is rotationally matched with the end of the first connecting rod (13) away from the second gear (12), and the third gear (14) is meshed with the second gear (12); A second connecting rod (15) is hingedly connected to the first connecting rod (13); one end of the second connecting rod (15) away from the first connecting rod (13) is rotatably matched with a fourth gear (16); the fourth gear (16) is meshed with the third gear (14); and the fourth gear (16) is coaxially fixedly connected to one end of a second tapered roller shaft (8) adjacent thereto; A delivery assembly for delivering soybean grains between the first conical roller shaft (6) and the second conical roller shaft (8) is provided at the top of the horizontal end of the L-shaped support rod (9).
3. The agricultural soybean grading and screening device according to claim 2, characterized in that: The adjustment components include screw rods (17) fixedly connected to the side walls of the sliders (7); the ends of the screw rods (17) away from the sliders (7) penetrate the support plates (2) and are threadedly engaged with the support plates (2); and the ends of the screw rods (17) away from the sliders (7) are coaxially fixedly connected to the rotary discs (18).
4. The agricultural soybean grading and screening device according to claim 3, characterized in that: The feeding assembly comprises a feeding trough (19), the bottom of the feeding trough (19) is fixedly connected to the top of the horizontal end of the L-shaped support rod (9), the bottom of the L-shaped support rod (9) is fixedly connected to a feeding pipe, the feeding pipe is connected to the bottom of the feeding trough (19), and the bottom of the feeding pipe is located above the first tapered roller shaft (6) and the second tapered roller shaft (8).
5. The agricultural soybean grading and screening device according to claim 4, characterized in that: The side walls of the screening box (5) are fixedly connected to a discharging pipe (20) which is arranged obliquely.
6. The agricultural soybean grading and screening device according to claim 5, characterized in that: The first tapered roller shaft (6) and the second tapered roller shaft (8) are both made of stainless steel.
7. The agricultural soybean grading and screening device according to claim 6, characterized in that: The bottoms of the legs (21) are all fixedly connected with a plurality of universal wheels.
8. The agricultural soybean grading and screening device according to claim 7, characterized in that: The bottom end of the discharge pipe (20) is detachably connected with a woven collection bag.
9. The agricultural soybean grading and screening device according to claim 8, characterized in that: A weight sensor is fixedly connected to the inner bottom wall of the screening box (5), and the controller is used to receive a weight signal of the soybeans in the screening box (5) sent by the weight sensor, and control the operation of the driving member (10) based on the weight signal.
10. The agricultural soybean grading and screening device according to claim 9, characterized in that: The screening box (5) is provided with a dust collecting component for collecting dust and light impurities raised by the soybeans when the soybeans are screened; The dust suction component comprises a vacuum pump; the side walls of the screening box (5) are connected with dust suction pipes, the dust suction pipes are connected with the input end of the vacuum pump, and the controller is used to control the opening and closing of the vacuum pump.