Huller special for astragalus sinicus

Abstract

The invention belongs to the technical field of agricultural machinery, and particularly relates to a special huller for astragalus sinicus, in the special huller for astragalus sinicus, materials are fed into a hulling mechanism through a feeding mechanism, and astragalus sinicus seeds are rubbed and extruded in a flexible gap formed by a second flexible layer of a rolling shell and a first flexible layer of a rolling roller under the driving of the rolling shell rotating in a reciprocating mode, so that hulling is achieved; an elastic assembly used for supporting the grinding roller is arranged below the grinding roller, so that the grinding roller can float within a certain range, and the gap pressure has the self-adaptive buffering capacity. According to the invention, the first flexible layer and the second flexible layer provide soft and uniform rubbing force, so that seed damage caused by rigid impact is effectively reduced; meanwhile, the conical grinding roller is matched with the grinding shell rotating in a reciprocating mode, dynamic pressure adjustment provided by the elastic assembly is combined, seed and shell separation can be more effectively achieved, the threshing requirement is met, and therefore the problem that the threshing rate and the breakage rate are difficult to balance due to the fact that the acting force of existing universal equipment is not matched is solved.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to a special shelling machine for milkvetch. Background Technology

[0002] As an important green manure and nectar source plant, the seed hulling process of milkvetch is a crucial step affecting seed purity, germination rate, and commercial value. Currently, production commonly uses general-purpose equipment designed for rice, such as rubber roller hullers and centrifugal dehullers. However, due to the fundamental differences in physical characteristics between milkvetch seeds and rice, existing equipment has poor compatibility and unsatisfactory processing results.

[0003] Milk vetch seeds are small in size and light in weight, and are kidney-shaped or nearly triangular. The structural strength, toughness, and seed coat attachment of the pods differ from those of rice. When using equipment optimized for rice characteristics to process milk vetch, the following prominent contradictions arise: if the equipment parameters are set according to rice, the threshing rate will be low due to insufficient force; if the gap is reduced or the force is increased to improve the threshing rate, the seeds are easily damaged due to overload, making it difficult to achieve both "threshing cleanly" and "low loss".

[0004] Therefore, a special shelling machine for milkvetch is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a special shelling machine for milkvetch to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following solution: A shelling machine for milkvetch includes: an outer shell, inside which a feeding mechanism, a shelling mechanism and a screening mechanism are arranged sequentially from top to bottom; The shelling mechanism includes a conical roller with its small end facing upwards. An elastic component is disposed below the roller. A rolling shell is disposed circumferentially on the outer side of the roller, and the rolling shell is adapted to the roller. The rolling shell reciprocates around its own axis, and a gap is left between the rolling shell and the roller. A second flexible layer is disposed circumferentially on the inner side of the rolling shell, and a first flexible layer is disposed circumferentially on the outer side of the roller. The first flexible layer and the second flexible layer are disposed correspondingly.

[0007] Preferably, the inner sidewall of the rolling mill shell is provided with a second mounting groove in the circumferential direction, and a second flexible layer is fixedly connected in the circumferential direction within the second mounting groove. The second flexible layer is flush with the inner sidewall of the rolling mill shell. The outer sidewall of the rolling mill roller is provided with a first mounting groove in the circumferential direction, and a first flexible layer is fixedly connected in the circumferential direction within the first mounting groove. The first flexible layer is flush with the outer sidewall of the rolling mill roller.

[0008] Preferably, the outer sidewall of the first flexible layer is provided with a plurality of first anti-slip patterns or a plurality of first protrusions, and the inner sidewall of the second flexible layer is provided with a plurality of second anti-slip patterns or a plurality of second protrusions.

[0009] Preferably, a second connecting pipe is coaxially fixed to the top of the crushing shell, a first connecting pipe is rotatably connected to the inner wall of the second connecting pipe, the first connecting pipe is connected to the feeding mechanism, a first pulley is coaxially fixed to the outer wall of the second connecting pipe, the first pulley is connected to a second pulley via a synchronous belt drive, the second pulley is coaxially fixed to the output shaft of a second motor, and the second motor is fixed to the inner wall of the outer shell.

[0010] Preferably, the elastic component includes a connecting rod fixed to the bottom end of the rolling roller, a slide cylinder slidably connected to the outer side of the connecting rod, a slide groove provided on the side wall of the slide cylinder, a slider slidably connected in the slide groove, the slider being fixed to the outer side wall of the connecting rod, a spring being provided in the slide cylinder, the top end of the spring abutting against the connecting rod, and the bottom end of the spring being fixed to the slide cylinder.

[0011] Preferably, a support frame is fixedly connected inside the outer casing, and the power end of the electric lifting rod is fixedly connected to the support frame. The output end of the electric lifting rod is fixedly connected to the bottom end of the slide cylinder.

[0012] Preferably, the screening mechanism includes a first screen assembly, a second screen assembly, and a collection hopper arranged sequentially from top to bottom, wherein the first screen assembly and the second screen assembly have the same structure; The first screen assembly includes a vibrating ring circumferentially disposed within the housing. Multiple vibrating motors are circumferentially spaced at the bottom end of the vibrating ring. The vibrating motors are fixedly mounted on the inner side wall of the housing. A support rod is fixedly connected to the inner edge of the vibrating ring. The axis of the support rod is parallel to the diameter of the vibrating ring. A mounting ring is detachably connected to the inner edge of the vibrating ring. A screen is circumferentially fixed to the inner edge of the mounting ring. The screen is in contact with the support rod. The mesh count of the screen located in the first screen assembly is less than the mesh count of the screen located in the second screen assembly.

[0013] Preferably, a guide ring is circumferentially fixed to the top of the mounting ring, a ramp is circumferentially formed on the inner edge of the guide ring, and a plurality of second magnetic blocks are circumferentially fixed at equal intervals to the bottom of the guide ring. The second magnetic blocks are magnetically connected to first magnetic blocks, and the plurality of first magnetic blocks are circumferentially fixed at equal intervals to the top surface of the vibration ring.

[0014] Preferably, the feeding mechanism includes a conveying pipe fixed inside the housing, a conveying auger rotatably connected inside the conveying pipe, one end of the conveying auger being coaxially fixed to the output shaft of a first motor, the first motor being fixed to the conveying pipe, a first connecting pipe communicating with the bottom surface of the conveying pipe, a feeding hopper communicating with the top surface of the conveying pipe, the feeding hopper being fixedly installed at the top of the housing, and the feeding hopper being away from the first connecting pipe.

[0015] Preferably, a fan is fixed to the outer side wall of the housing, the fan is connected to the inner cavity of the housing, the air outlet of the fan is located between the first screen assembly and the support frame, and a first discharge port is provided on the housing, the first discharge port being correspondingly arranged with the air outlet of the fan.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects: In this invention, the material is fed into the dehulling mechanism by the feeding mechanism. Driven by the reciprocating rotating crushing shell, the milkvetch seeds are rubbed and squeezed in the flexible gap formed by the second flexible layer of the crushing shell and the first flexible layer of the crushing roller, thus achieving dehulling. An elastic component is provided below the crushing roller to support the crushing roller, so that the crushing roller can float within a certain range, giving the gap pressure an adaptive buffering capability.

[0017] In this invention, the first and second flexible layers provide a gentle and uniform kneading force, effectively reducing seed damage caused by rigid impact. At the same time, the conical roller and the reciprocating roller shell work together, combined with the dynamic pressure adjustment provided by the elastic component, to more effectively separate the seed shells and meet the requirements for seed removal. This solves the problem that existing general equipment is unable to balance the removal rate and the breakage rate due to the mismatch of forces. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 A magnified view of a section at point B in the middle; Figure 4 for Figure 1 A magnified view of a section at point C; The components are as follows: 1. Outer shell; 2. Feed hopper; 3. Conveying pipe; 4. Conveying auger; 5. First motor; 6. Second motor; 7. First connecting pipe; 8. Second connecting pipe; 9. First pulley; 10. Second pulley; 11. Synchronous belt; 12. Compactor roller; 13. Compactor shell; 14. First protective pipe; 15. Second protective pipe; 16. Electric lifting rod; 17. Support frame; 18. Fan; 19. First discharge port; 20. Second discharge port; 21. Third discharge port; 22. Fourth discharge port; 23. Collecting hopper; 24. Connecting rod; 25. Slide cylinder; 26. Slider; 27. Slide groove; 28. Spring; 29. ​​First flexible layer; 30. Second flexible layer; 31. Vibration motor; 32. Vibration ring; 33. First magnetic block; 34. Second magnetic block; 35. Guide ring; 36. Mounting ring; 37. Support rod; 38. Screen. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 4 The present invention discloses a shelling machine for milkvetch, comprising: an outer shell 1, wherein a feeding mechanism, a shelling mechanism and a screening mechanism are arranged sequentially from top to bottom inside the outer shell 1; The shelling mechanism includes a rolling roller 12, which is conical with the small end facing upward. An elastic component is provided below the rolling roller 12. A rolling shell 13 is provided on the outer circumference of the rolling roller 12. The rolling shell 13 is adapted to the rolling roller 12 and rotates back and forth around its own axis. A gap is left between the rolling shell 13 and the rolling roller 12. A second flexible layer 30 is provided on the inner circumference of the rolling shell 13. A first flexible layer 29 is provided on the outer circumference of the rolling roller 12. The first flexible layer 29 and the second flexible layer 30 are correspondingly arranged.

[0022] Milk vetch seeds are fed into the inlet at the top of the outer shell 1 and conveyed to the shelling mechanism via a feeding mechanism. In the shelling mechanism, the seeds enter the gap between a conical roller 12 and a circumferentially fitted roller shell 13. The roller shell 13 rotates reciprocally around its own axis under the action of a drive assembly. Its inner second flexible layer 30 corresponds to the outer first flexible layer 29 of the roller 12, forming a flexible kneading working surface. The seeds are subjected to reciprocating kneading and crushing in the gap, and their pods peel off under the action of flexible friction. The elastic component below the roller 12 provides vertical elastic support, allowing the gap pressure to be dynamically buffered according to the amount of seeds passing through, avoiding rigid jamming. The shelled mixture falls to the screening mechanism, where seed and pod separation is achieved. This solution, through the cooperation of the first flexible layer 29 and the second flexible layer 30 and the buffering effect of the elastic component, achieves flexible force application and adaptive gap control on the milk vetch seeds. It ensures a high shelling rate through continuous kneading and effectively reduces the risk of seed breakage through elastic buffering and flexible contact.

[0023] In a further optimized design, a second mounting groove is provided circumferentially on the inner sidewall of the rolling shell 13, and a second flexible layer 30 is fixedly connected circumferentially in the second mounting groove. The second flexible layer 30 is flush with the inner sidewall of the rolling shell 13. A first mounting groove is provided circumferentially on the outer sidewall of the rolling roller 12, and a first flexible layer 29 is fixedly connected circumferentially in the first mounting groove. The first flexible layer 29 is flush with the outer sidewall of the rolling roller 12.

[0024] By fixing the first flexible layer 29 and the second flexible layer 30 into the first and second mounting grooves respectively, and ensuring that the surfaces of the flexible layers are flush with the walls of the rolling roller 12 and the rolling shell 13, a flat, continuous, and gap-free flexible working surface is ensured. During operation, seeds pass smoothly between the flat flexible layers, avoiding seed jamming or localized stress concentration caused by uneven surfaces. This also results in more uniform wear of the flexible layers, extending their service life.

[0025] In a further optimized design, the outer sidewall of the first flexible layer 29 is provided with an array of multiple first anti-slip patterns or multiple first protrusions, and the inner sidewall of the second flexible layer 30 is provided with an array of multiple second anti-slip patterns or multiple second protrusions.

[0026] During operation, the first anti-slip texture / protrusion and the second anti-slip texture / protrusion interweave, increasing the gripping and turning ability on the seed surface during the kneading process.

[0027] In a further optimized design, a second connecting pipe 8 is coaxially fixed to the top of the crushing shell 13. A first connecting pipe 7 is rotatably connected to the inner wall of the second connecting pipe 8. The first connecting pipe 7 is connected to the feeding mechanism. A first pulley 9 is coaxially fixed to the outer wall of the second connecting pipe 8. The first pulley 9 is connected to a second pulley 10 via a synchronous belt 11. The second pulley 10 is coaxially fixed to the output shaft of the second motor 6. The second motor 6 is fixed to the inner wall of the outer shell 1.

[0028] The second motor 6 drives the first pulley 9 via the second pulley 10 and the synchronous belt 11, causing the second connecting pipe 8 and the coaxially fixed crushing shell 13 to reciprocate. The first connecting pipe 7 and the second connecting pipe 8 are rotatably connected to ensure a sealed connection between the feeding mechanism and the rotating crushing shell 13.

[0029] In a further optimized design, the elastic component includes a connecting rod 24 fixed to the bottom end of the rolling roller 12, a slide cylinder 25 slidably connected to the outer side of the connecting rod 24, a slide groove 27 provided on the side wall of the slide cylinder 25, a slider 26 slidably connected in the slide groove 27, the slider 26 fixed to the outer side wall of the connecting rod 24, and a spring 28 provided inside the slide cylinder 25, the top end of the spring 28 abutting against the connecting rod 24, and the bottom end of the spring 28 fixed to the slide cylinder 25.

[0030] During operation, the connecting rod 24 can slide relative to the slide cylinder 25, and the slider 26 moves within the slide groove 27 for limiting and guiding. The spring 28 provides continuous elastic support force. When the amount of seeds in the gap increases, the rolling roller 12 is pressed down and compresses the spring 28, and the gap automatically increases to buffer the pressure; when the amount of seeds decreases, the spring 28 rebounds to restore the gap.

[0031] In a further optimized design, a support frame 17 is fixedly connected inside the outer casing 1, and the power end of an electric lifting rod 16 is fixedly connected to the support frame 17. The output end of the electric lifting rod 16 is fixedly connected to the bottom end of the slide cylinder 25.

[0032] By extending and retracting the electric lifting rod 16, the slide 25 and the entire rolling roller 12 assembly can be driven to rise and fall, thereby actively and precisely adjusting the initial gap between the rolling roller 12 and the rolling shell 13.

[0033] The bottom end of the rolling roller 12 is fixedly connected to a first protective tube 14, and the inner side of the first protective tube 14 is slidably connected to a second protective tube 15. The bottom end of the second protective tube 15 is fixedly connected to the support frame 17. The elastic component and the electric lifting rod 16 are both located inside the first protective tube 14 and the second protective tube 15.

[0034] The scheme is further optimized. The screening mechanism includes a first screen assembly, a second screen assembly, and a collection hopper 23 arranged sequentially from top to bottom. The first screen assembly and the second screen assembly have the same structure. The first screen assembly includes a vibrating ring 32 circumferentially disposed within the housing 1. Multiple vibrating motors 31 are circumferentially and evenly spaced at the bottom end of the vibrating ring 32. The vibrating motors 31 are fixedly mounted on the inner side wall of the housing 1. A support rod 37 is fixedly connected to the inner edge of the vibrating ring 32. The axis of the support rod 37 is parallel to the diameter of the vibrating ring 32. A mounting ring 36 is detachably connected to the inner edge of the vibrating ring 32. A screen 38 is circumferentially fixed to the inner edge of the mounting ring 36. The screen 38 is in contact with the support rod 37. The mesh size of the screen 38 located in the first screen assembly is smaller than that of the screen 38 located in the second screen assembly.

[0035] After shelling, the material falls sequentially onto the first screen assembly and then the second screen assembly. The vibrating ring 32 is located at the vibrating end of the vibrating motor 31. The vibrating motor 31 drives the vibrating ring 32 and the screen 38 to vibrate at high frequency, thus screening the material. Different mesh sizes of the screens 38 achieve grading: the upper screen separates incompletely shelled pods and impurities, the lower screen removes debris and dust, and the intact seeds fall into the collection hopper 23.

[0036] In a further optimized design, a guide ring 35 is circumferentially fixed to the top of the mounting ring 36. A ramp is circumferentially opened on the inner edge of the guide ring 35. Multiple second magnetic blocks 34 are circumferentially fixed at equal intervals at the bottom of the guide ring 35. The second magnetic blocks 34 are magnetically connected to first magnetic blocks 33. Multiple first magnetic blocks 33 are circumferentially fixed at equal intervals on the top surface of the vibration ring 32.

[0037] When installing or replacing the screen 38, the ramp of the guide ring 35 facilitates quick positioning. The mounting ring 36 is placed on the vibrating ring 32, so that the second magnetic block 34 is attracted and fixed to the first magnetic block 33.

[0038] The outer casing 1 is provided with a second discharge port 20, a third discharge port 21 and a fourth discharge port 22. The fourth discharge port 22 is correspondingly arranged with the hopper 23. The second discharge port 20 is located above the first screen assembly and is used to remove the first screen assembly. The third discharge port 21 is located above the second screen assembly and is used to remove the third discharge port 21.

[0039] The feeding mechanism is further optimized by including a conveying pipe 3 fixed inside the outer casing 1, a conveying auger 4 rotatably connected inside the conveying pipe 3, one end of the conveying auger 4 being coaxially fixed to the output shaft of the first motor 5, the first motor 5 being fixed to the conveying pipe 3, a first connecting pipe 7 being connected to the bottom surface of the conveying pipe 3, and a feeding hopper 2 being connected to the top surface of the conveying pipe 3. The feeding hopper 2 is fixedly installed at the top of the outer casing 1 and is away from the first connecting pipe 7.

[0040] Seeds fall from the feed hopper 2 into the conveying pipe 3. The first motor 5 drives the conveying auger 4 to rotate, conveying the seeds evenly and quantitatively to the first connecting pipe 7 and then into the dehulling mechanism.

[0041] In a further optimized design, a fan 18 is fixedly connected to the outer wall of the outer shell 1. The fan 18 is connected to the inner cavity of the outer shell 1. The air outlet of the fan 18 is located between the first screen assembly and the support frame 17. A first discharge port 19 is provided on the outer shell 1, and the first discharge port 19 is correspondingly set with the air outlet of the fan 18.

[0042] During operation, the blower 18 blows airflow into the inner cavity of the outer casing 1. The airflow passes through the area of ​​the first screen assembly, blowing up light shell fragments, dust and other impurities in the deshelled mixture, and then discharges them through the first discharge port 19.

[0043] The complete work process is as follows: First, the milkvetch seeds to be processed are fed into the top feed hopper 2. The first motor 5 drives the conveying auger 4 to rotate inside the conveying pipe 3, conveying the seeds evenly and continuously downwards, and then guiding them into the shelling mechanism through the first connecting pipe 7. After entering the shelling chamber, the seeds fall into the annular working gap formed by the crushing roller 12 and the crushing shell 13. The crushing shell 13 is rotatably connected to the first connecting pipe 7 through the second connecting pipe 8 at its top, and is driven by the second motor 6 through the second pulley 10, the synchronous belt 11, and the first pulley 9 to reciprocate. Driven by the crushing shell 13, the seeds are subjected to continuous and gentle circumferential rubbing and squeezing between the second flexible layer 30 on its inner side and the first flexible layer 29 on the outer side of the crushing roller 12. The anti-slip texture / protrusions on the outer side of the first flexible layer 29 and the anti-slip texture / protrusions on the inner side of the second flexible layer 30 work together to enhance the gripping and turning ability of irregularly shaped seeds, effectively peeling off the shells.

[0044] During this process, the elastic component beneath the compaction roller 12 provides crucial adaptive cushioning: the connecting rod 24 at the bottom of the compaction roller 12 can slide within the slide cylinder 25 and is supported by an internal spring 28. When the amount of seed in the gap increases instantaneously, the pressure causes the compaction roller 12 to move downward, compressing the spring 28, and the gap automatically widens to buffer overload; when the pressure decreases, the spring 28 rebounds to restore the gap. Furthermore, the initial working gap can be precisely set by adjusting the overall height of the slide cylinder 25 via the electric lifting rod 16 to accommodate different batches of seeds.

[0045] The dehulled mixture falls to the screening mechanism. The material first falls onto the screen 38 of the first screen assembly, where a vibrating motor 31 drives a vibrating ring 32 and a mounting ring 36 fixed by a first magnetic block 33 and a second magnetic block 34 to vibrate at high frequency, achieving the first screening and separating large particles of impurities. Smaller materials continue to fall to the second screen assembly (with a smaller mesh size on its screen 38), further removing fine debris. Simultaneously, a fan 18 located below the support frame 17 blows air into the screening area, expelling lightweight shell fragments and dust raised during screening through the first discharge port 19 from the outer shell 1, completing the air separation and cleaning process. Finally, the pure milkvetch seeds pass through the two-stage screens and fall into the bottom collection hopper 23, completing the entire dehulling and cleaning process.

[0046] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A special shelling machine for milkvetch, characterized in that, include: The outer shell (1) contains a feeding mechanism, a shelling mechanism and a screening mechanism arranged sequentially from top to bottom. The shelling mechanism includes a rolling roller (12), which is conical with the small end facing upward. An elastic component is provided below the rolling roller (12). A rolling shell (13) is provided on the outer circumference of the rolling roller (12). The rolling shell (13) is adapted to the rolling roller (12). The rolling shell (13) reciprocates around its own axis. A gap is left between the rolling shell (13) and the rolling roller (12). A second flexible layer (30) is provided on the inner circumference of the rolling shell (13). A first flexible layer (29) is provided on the outer circumference of the rolling roller (12). The first flexible layer (29) and the second flexible layer (30) are correspondingly arranged.

2. The special shelling machine for milkvetch according to claim 1, characterized in that: The inner sidewall of the rolling shell (13) is provided with a second mounting groove in the circumferential direction. The second flexible layer (30) is fixed in the circumferential direction in the second mounting groove. The second flexible layer (30) is flush with the inner sidewall of the rolling shell (13). The outer sidewall of the rolling roller (12) is provided with a first mounting groove in the circumferential direction. The first flexible layer (29) is fixed in the circumferential direction in the first mounting groove. The first flexible layer (29) is flush with the outer sidewall of the rolling roller (12).

3. The shelling machine for milkvetch according to claim 1, characterized in that: The outer sidewall of the first flexible layer (29) is provided with a plurality of first anti-slip patterns or a plurality of first protrusions, and the inner sidewall of the second flexible layer (30) is provided with a plurality of second anti-slip patterns or a plurality of second protrusions.

4. The special shelling machine for milkvetch according to claim 1, characterized in that: The top of the rolling shell (13) is coaxially fixed with a second connecting pipe (8), and a first connecting pipe (7) is rotatably connected to the inner wall of the second connecting pipe (8). The first connecting pipe (7) is connected to the feeding mechanism. A first pulley (9) is coaxially fixed to the outer wall of the second connecting pipe (8). The first pulley (9) is connected to a second pulley (10) via a synchronous belt (11). The second pulley (10) is coaxially fixed to the output shaft of the second motor (6). The second motor (6) is fixed to the inner wall of the outer shell (1).

5. The special shelling machine for milkvetch according to claim 1, characterized in that: The elastic component includes a connecting rod (24) fixed to the bottom end of the rolling roller (12), a slide cylinder (25) slidably connected to the outside of the connecting rod (24), a slide groove (27) is provided on the side wall of the slide cylinder (25), a slider (26) is slidably connected in the slide groove (27), the slider (26) is fixed to the outside wall of the connecting rod (24), a spring (28) is provided in the slide cylinder (25), the top end of the spring (28) abuts against the connecting rod (24), and the bottom end of the spring (28) is fixed to the slide cylinder (25).

6. The special shelling machine for milkvetch according to claim 5, characterized in that: A support frame (17) is fixedly connected inside the outer shell (1), and the power end of an electric lifting rod (16) is fixedly connected to the support frame (17). The output end of the electric lifting rod (16) is fixedly connected to the bottom end of the slide cylinder (25).

7. The special shelling machine for milkvetch according to claim 6, characterized in that: The screening mechanism includes a first screen assembly, a second screen assembly, and a collection hopper (23) arranged sequentially from top to bottom. The first screen assembly and the second screen assembly have the same structure. The first screen assembly includes a vibrating ring (32) circumferentially disposed within the housing (1). Multiple vibrating motors (31) are circumferentially and evenly spaced at the bottom end of the vibrating ring (32). The vibrating motors (31) are fixedly mounted on the inner side wall of the housing (1). A support rod (37) is fixedly connected to the inner edge of the vibrating ring (32). The axis of the support rod (37) is parallel to the diameter of the vibrating ring (32). A mounting ring (36) is detachably connected to the inner edge of the vibrating ring (32). A screen (38) is circumferentially fixed to the inner edge of the mounting ring (36). The screen (38) is in contact with the support rod (37). The mesh count of the screen (38) located in the first screen assembly is less than the mesh count of the screen (38) located in the second screen assembly.

8. The special shelling machine for milkvetch according to claim 7, characterized in that: The top end of the mounting ring (36) is circumferentially fixed with a guide ring (35), the inner edge of the guide ring (35) is circumferentially provided with a slope, and the bottom end of the guide ring (35) is circumferentially fixed with a plurality of second magnetic blocks (34) at equal intervals. The second magnetic blocks (34) are magnetically connected to a first magnetic block (33), and the plurality of first magnetic blocks (33) are circumferentially fixed at equal intervals on the top surface of the vibration ring (32).

9. The special shelling machine for milkvetch according to claim 4, characterized in that: The feeding mechanism includes a conveying pipe (3) fixed inside the outer shell (1), a conveying auger (4) rotatably connected inside the conveying pipe (3), one end of the conveying auger (4) being coaxially fixed to the output shaft of the first motor (5), the first motor (5) being fixed to the conveying pipe (3), the bottom surface of the conveying pipe (3) being connected to the first connecting pipe (7), the top surface of the conveying pipe (3) being connected to the feed hopper (2), the feed hopper (2) being fixedly installed at the top of the outer shell (1), and the feed hopper (2) being away from the first connecting pipe (7).

10. The shelling machine for milkvetch according to claim 7, characterized in that: A fan (18) is fixedly connected to the outer wall of the outer shell (1). The fan (18) is connected to the inner cavity of the outer shell (1). The air outlet of the fan (18) is located between the first screen assembly and the support frame (17). A first discharge port (19) is provided on the outer shell (1). The first discharge port (19) is correspondingly set with the air outlet of the fan (18).

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