A Corydalis harvesting device

Abstract

This invention discloses a Corydalis harvesting device, comprising a carrier device, a soil-breaking device, a conveyor, and a separating device. The carrier device is dragged along the ground and is used to connect to agricultural machinery, moving under the traction of the machinery. The soil-breaking device slides into the conveyor, with one end of the soil-breaking device inserted obliquely into the soil. As the carrier device moves, the soil-breaking device scoops out the soil and Corydalis and conveys it to the conveyor. The soil-breaking device and the conveyor are installed via the carrier device and can move laterally as a whole along the carrier device. The separating device is rotatably installed at the end of the carrier device away from the agricultural machinery. After the conveyor moves, it is inserted into the separating device, so that the mixture of soil and Corydalis conveyed by the conveyor is transported to the separating device for separation. The separated soil fragments are discharged from the bottom of the separating device, while the Corydalis are stored inside. This device has an optimized structure, thorough screening, and can be cleaned quickly.

Description

Technical Field

[0001] This invention relates to a device for harvesting Corydalis rhizome. Background Technology

[0002] Corydalis, also known as Yuanhu, is a commonly used bulk Chinese medicinal herb. It is mostly grown in soil in fields, where the tubers are buried in the shallow soil after maturity. Harvesting requires separating the soil from the Corydalis tubers. Currently, existing Corydalis harvesting equipment has many technical shortcomings:

[0003] Firstly, traditional harvesting equipment is mostly fixed in structure, which cannot flexibly adjust the soil breaking depth according to the actual planting depth of Corydalis. This can easily lead to problems such as under-harvesting due to shallow soil breaking or under-harvesting due to deep soil breaking, which can significantly increase the load on subsequent screening and separation and reduce harvesting efficiency.

[0004] Secondly, the separation structure of the soil and Corydalis mixture is simple, and single-layer static screens are often used for screening. The soil is not finely refined, the screening is incomplete, and a lot of dust is easily generated during the operation, resulting in a poor working environment. At the same time, soil clods may be trapped with Corydalis, leading to harvesting losses.

[0005] Third, the existing equipment has a low degree of integration between the unloading structure and the screening structure, the unloading process is cumbersome, and the core separation structure such as the screen cylinder and the hopper cannot be cleaned quickly after the equipment is in operation. Residual mud and soil are prone to clumping and blocking the screen holes, affecting the accuracy of subsequent operations and the service life of the equipment.

[0006] In summary, existing Corydalis harvesting equipment suffers from technical problems such as unadjustable soil breaking depth, poor screening effect, serious dust generation, and lack of rapid cleaning function. There is an urgent need to develop a Corydalis harvesting device with optimized structure, thorough screening, and rapid cleaning capability. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a Corydalis harvesting device with optimized structure, thorough screening and rapid cleaning.

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A harvesting device for Corydalis rhizome includes a carrier device, a soil-breaking device, a conveyor, and a separating device;

[0010] The vehicle device is dragged along the ground and is used to connect to agricultural machinery, which then moves it by pulling it.

[0011] The soil breaking device and the conveyor slide together. One end of the soil breaking device is inserted obliquely into the soil. As the carrier device moves, the soil breaking device shovels out the soil and corydalis and transports it to the conveyor. The soil breaking device and the conveyor are installed through the carrier device and can move as a whole along the lateral direction of the carrier device.

[0012] The separation device is rotatably installed at the end of the carrier device away from the agricultural machinery. After the conveyor is displaced, it is inserted into the separation device, so that the mixture of soil and corydalis transported by the conveyor is transported into the separation device for separation. The separated soil is discharged from the bottom of the separation device, while the corydalis is stored in the separation device.

[0013] The controller is used to connect and control the vehicle device, the excavating device, the conveyor, and the separating device.

[0014] Preferably, the carrier device includes a carrier plate and rollers that are rotatably supported on the carrier plate. A traction bracket is provided at the right end of the carrier plate. The traction bracket is Y-shaped and connects to agricultural machinery. An installation slot is provided on the left side of the carrier plate. The separation device is rotatably installed at the installation slot, and the soil separated by the separation device is discharged to the ground through the installation slot. Slide grooves are provided on the front and rear sides of the carrier plate. A sliding platform is provided above the carrier plate. Two or more gantry frames are fixed to the bottom of the sliding platform. Sliding blocks are detachably installed on the inner walls of both sides of the gantry frames. The sliding blocks move laterally along the slide grooves. Sliding; a hydraulic telescopic rod is fixed to the top of the carrier plate, and the extension and retraction of the hydraulic telescopic rod is controlled by the controller. A connecting seat is provided at the bottom of the sliding table, and the movable end of the hydraulic telescopic rod is fixed to the connecting seat. Limit switches are installed at both ends of the sliding groove on one side. The limit switches control the hydraulic telescopic rod through the controller. The soil breaking device and the conveyor are both installed through the sliding table. When the slider slides to trigger the limit switch on the right, the left end of the conveyor disengages from the separation device. When the slider slides to trigger the limit switch on the left, the left end of the conveyor inserts into the separation device.

[0015] Preferably, side plates are installed on both sides of the top of the conveyor, a bracket is fixed between the conveyor and the slide, a slide rail is installed between the soil-breaking device and the side plates on both sides, a first bracket is welded on the upper part of the slide, and a first hydraulic telescopic rod is installed through the first bracket. The soil-breaking device is driven to move by the first hydraulic telescopic rod; there are two first hydraulic telescopic rods, one in front and one in back; the extension and retraction of the first hydraulic telescopic rod is controlled by the controller.

[0016] Preferably, the soil-breaking device includes a soil-breaking bucket, a drive motor, and a rotating roller. The soil-breaking bucket is slidably mounted between the side plates on both sides via the slide rail. The soil-breaking bucket is inclined downwards, and a soil-breaking cone is provided at the inclined downward end of the soil-breaking bucket. The rotating roller is mounted on the inner side of the soil-breaking bucket via a bearing. The drive motor is fixed on the outer side of the soil-breaking bucket, and the drive motor and the rotating roller are driven by a belt transmission mechanism. Soil-breaking plates are evenly distributed on the outer wall of the rotating roller. A discharge port is provided at the bottom of the soil-breaking bucket, corresponding to the conveyor. When the rotating roller rotates, it breaks up the soil clods entering the soil-breaking bucket and pushes them towards the discharge port. The movable end of the first hydraulic telescopic rod is fixed to the outer wall of the soil-breaking bucket. The speed of the drive motor is adjusted by the controller.

[0017] Preferably, the separation device includes a frame, bearing seats, bearings, an outer screen cylinder, an inner screen cylinder, a first drive motor, a second drive motor, a retaining cover, a material discharge device, a hydraulic jack, a first bearing, and a second bearing. The first drive motor, the second drive motor, and the hydraulic jack are all connected and controlled by the controller. The left end of the frame and the carrier plate are rotatably connected by a pin. The hydraulic jack is rotatably mounted between the carrier plate and the frame via a pin. When the hydraulic jack is raised to its limit position, the frame rotates to be perpendicular to the carrier plate. When the hydraulic jack is retracted to its limit position, the frame is parallel to the carrier plate. Two bearing seats are arranged parallel to each other on the left and right sides. The lower end of the bearing seats is fixed to the frame. The bearing is installed between the bearing seats and the outer screen cylinder. The inner screen cylinder is rotatably mounted on the inner screen cylinder via the first bearing. On the right side of the cylinder, the material discharge device is mounted on the left side of the outer screen cylinder via a second bearing. A connecting arm is welded between the material discharge device and the frame. The position of the material discharge device is fixed, and the outer screen cylinder rotates along the second bearing. The retaining cover is fixedly installed between the two bearing seats. The outer screen cylinder is located inside the retaining cover and is clearance-fitted with the retaining cover. A slag discharge port is provided at the bottom of the retaining cover, and the lower end of the slag discharge port passes through the frame. Machine base plates are provided on the front and rear sides of the frame. The first drive motor and the second drive motor are respectively mounted on the machine base plates on the front and rear sides. The first drive motor is driven by the outer screen cylinder via a belt drive mechanism, and the second drive motor is driven by the inner screen cylinder via a belt drive mechanism. The outer screen cylinder and the inner screen cylinder rotate in opposite directions. The conveyor is inserted from the left side of the inner screen cylinder.

[0018] Preferably, the outer screen cylinder includes a frame, reinforcing rods, and a screen. Two frames are arranged on the left and right sides. The reinforcing rods are fixedly installed between the two frames. Multiple reinforcing rods are arranged in a ring. The screen is fixed between the two frames and located inside the multiple reinforcing rods. The reinforcing rods act on the outer wall of the screen. The inner ring of the bearing is fixed to the frame. The inner screen cylinder is assembled with the right frame. The material ejection device is assembled with the left frame.

[0019] Preferably, the right end of the inner screen cylinder is open, the left end is closed, and an end cap is detachably installed on the right end of the inner screen cylinder. An inlet for entering the conveyor is provided at the axial center of the end cap. Discharge chutes are evenly distributed on the outer wall of the inner screen cylinder, and the soil entering the inner screen cylinder is thrown out through the discharge chutes. Crushing rods are evenly distributed on the outer wall of the inner screen cylinder, and the ends of the crushing rods are in clearance fit with the screen mesh. The inner screen cylinder is rotatably installed through the first bearing. A portion of the inner screen cylinder is located outside the outer screen cylinder for cooperation with the belt drive mechanism. A first shaft seal is installed between the inner screen cylinder and the right side frame.

[0020] Preferably, the length of the inner screen cylinder is 1 / 3 to 1 / 2 of the length of the outer screen cylinder.

[0021] Preferably, the unloading device includes a collecting hopper and a discharging hopper. The collecting hopper is rotatably mounted to the left side frame via the second bearing. The discharging hopper is fixed at the left axis of the collecting hopper. The end of the discharging hopper away from the collecting hopper is bent towards the direction perpendicular to the frame, so that when the frame is rotated to the vertical, the opening of the discharging hopper tilts downward to discharge the material in the discharging hopper. A conical opening is provided on the right side of the collecting hopper. A guide cover is provided inside the screen near the left side. The guide cover is inserted into the collecting hopper through the opening. The connecting arm is welded and fixed to the discharging hopper.

[0022] Preferably, a pad is provided on the outer side of the unloading hopper, and the pad is made of elastic rubber when the frame is rotated to a vertical position.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention adopts an adjustable soil-breaking structure. The soil-breaking depth of the soil-breaking bucket can be precisely adjusted through the first hydraulic telescopic rod. The soil-breaking range can be adaptively adjusted according to the actual planting depth of Corydalis rhizome. This avoids the problem of missed harvesting caused by shallow soil breaking, and also prevents the situation of excessive soil breaking and carrying a large amount of excess soil, which increases the screening load. This makes the harvesting adaptability stronger. At the same time, after harvesting, the first hydraulic telescopic rod can be retracted to lift the soil-breaking device off the ground, which is convenient for equipment transportation and movement.

[0025] 2. This invention adopts a multi-stage screening structure with inner and outer double screen cylinders rotating in opposite directions and with a speed difference. The inner screen cylinder initially breaks up and refines the soil material and throws out the mixture, while the outer screen cylinder further breaks up and refines the soil clods. Combined with the cutting and screening action of the screen mesh, the soil can be fully refined into powder, resulting in thorough screening and good separation effect. This effectively avoids harvesting losses caused by soil clods carrying corydalis rhizome. At the same time, with the soil retaining cover and bottom slag discharge structure, the broken soil is discharged directly from the bottom, unaffected by crosswinds, completely solving the problem of high dust in traditional screening equipment and optimizing the working environment.

[0026] 3. This invention features a rotatable separation device that drives the frame to rotate via a hydraulic push rod, enabling switching between horizontal screening and vertical automatic unloading modes. The unloading process is highly automated, simultaneously discharging finished Corydalis rhizome and impurities such as stones and hard soil, resulting in high material cleanliness. Furthermore, water can enter through the slag discharge port and end cap after unloading, and the continuous rotation of the double screen cylinders enables rapid, all-around self-cleaning of the equipment, effectively preventing screen blockage, ensuring long-term operational accuracy, and extending the equipment's service life.

[0027] 4. This invention uses a sliding table, hydraulic telescopic rod, and double-sided limit switches to achieve precise docking and automatic disengagement between the conveyor and the separation device. During screening operations, it accurately docks and feeds materials, and completely disengages and avoids collisions during unloading. The linkage and coordination of each mechanism are precise, eliminating problems such as misalignment, material leakage, and equipment collisions. This greatly improves the stability and automation of the equipment operation and is suitable for large-scale field harvesting operations.

[0028] 5. The present invention has a high degree of structural integration and reasonable layout. It integrates the functions of carrier, soil breaking, conveying, screening, unloading and cleaning, eliminating the need for manual operation, greatly reducing the intensity of manual labor, and effectively improving the harvesting efficiency and quality of Corydalis. It is extremely practical and versatile. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0030] Figure 1 This is a diagram showing the feeding status of the conveyor.

[0031] Figure 2 This is a schematic diagram of the conveyor's removal.

[0032] Figure 3 This is a schematic diagram of the unloading process of the separation device;

[0033] Figure 4 This is a top view of the vehicle deck;

[0034] Figure 5 This is a three-dimensional diagram of the ground-breaking device;

[0035] Figure 6 This is a front view of the separation device;

[0036] Figure 7 Rear view of the separation device;

[0037] Figure 8 A schematic diagram showing the removal of the retaining cover for the separation device;

[0038] Figure 9 for Figure 8 A partial sectional view at point A;

[0039] Figure 10 for Figure 8 A partial sectional view at point B;

[0040] Figure 11 for Figure 6 Cross-sectional view at CC;

[0041] Figure 12 This is a front view of the inner screen cylinder;

[0042] Figure 13 This is a right view of the inner sieve cylinder;

[0043] Figure 14 This is a front view of the unloading device;

[0044] Figure 15 This is a right view of the unloading device.

[0045] The diagram shows: 1. Carrier device; 11. Carrier plate; 12. Roller; 13. Traction bracket; 14. Mounting slot; 15. Slide table; 110. Slide groove; 111. Limit switch; 150. Gantry frame; 151. Sliding block; 152. Connecting seat; 16. Hydraulic telescopic rod; 2. Soil-breaking device; 21. Soil-breaking bucket; 22. Drive motor; 23. Rotary roller; 24. Soil-breaking cone; 210. Discharge port; 231. Soil-breaking plate; 3. Conveyor; 31. Side plate; 32. Bracket; 33. Slide rail; 34. First bracket; 35. First hydraulic telescopic rod; 4. Separation device; 41. Frame; 42. Bearing seat ; 43. Bearing; 44. Outer screen cylinder; 45. Inner screen cylinder; 46. First drive motor; 47. Second drive motor; 48. Retaining cover; 49. Material discharge device; 410. Hydraulic jack; 411. First bearing; 412. Second bearing; 413. Connecting arm; 414. Base plate; 441. Frame; 442. Reinforcing rod; 443. Screen; 4430. Material guide cover; 451. End cover; 452. Inlet; 453. Discharge chute; 454. Crushing rod; 455. First shaft seal; 481. Slag discharge port; 491. Collecting hopper; 492. Discharge hopper; 493. Opening hole; 494. Pad plate. Detailed Implementation

[0046] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0047] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0048] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, 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.

[0049] Furthermore, in the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] See Figure 1 , Figure 2 and Figure 3 The device shown is a corydalis harvesting device, which includes a carrier device 1, a soil-breaking device 2, a conveyor 3 and a separating device 4;

[0052] The vehicle device 1 is dragged along the ground. The vehicle device 1 is used to connect with agricultural machinery and move by being towed by the agricultural machinery.

[0053] The soil breaking device 2 and the conveyor 3 are slidably engaged. One end of the soil breaking device 2 is inserted obliquely into the soil. As the carrier device 1 moves, the soil breaking device 2 shovels out the soil and corydalis and conveys it to the conveyor 3. The soil breaking device 2 and the conveyor 3 are installed through the carrier device 1 and can move as a whole along the lateral direction of the carrier device 1.

[0054] The separation device 4 is rotatably installed at the end of the carrier device 1 away from the agricultural machinery. After the conveyor 3 is displaced, it is inserted into the separation device 4, so that the mixture of soil and corydalis transported by the conveyor 3 is transported into the separation device 4 for separation. The separated broken soil is discharged from the bottom of the separation device 4, while the corydalis is stored in the separation device 4.

[0055] The controller is used to connect and control the vehicle device 1, the excavation device 2, the conveyor 3, and the separation device 4.

[0056] In the above technical solution, a rotatable separation device 4 is used. When the conveyor 3 feeds material to the separation device 4, the rotation of the separation device 4 will refine and discharge the soil clods, while the corydalis will be left inside the separation device 4.

[0057] After the soil is separated, the separation device 4 rotates along the carrier device 1 to a vertical position, so that the separated Corydalis rhizome is discharged through the separation device 4, completing the unloading.

[0058] When unloading is completed, cleaning water is injected into the separation device 4 to maintain the rotation of the separation device 4 and complete the self-cleaning of the separation device 4.

[0059] See Figure 3 and Figure 4As shown, the carrier device 1 includes a carrier plate 11 and rollers 12 that are rotatably supported on the carrier plate 11. A traction bracket 13 is provided at the right end of the carrier plate 11. The traction bracket 13 is Y-shaped and connects to agricultural machinery. An installation slot 14 is provided on the left side of the carrier plate 11. The separation device 4 is rotatably installed at the installation slot 14. The soil separated by the separation device 4 is discharged to the ground through the installation slot 14. Slide grooves 110 are provided on the front and rear sides of the carrier plate 11. A sliding platform 15 is provided above the carrier plate 11. Two or more gantry frames 150 are fixed to the bottom of the sliding platform 15. Slider blocks 151 are detachably installed on the inner walls of both sides of the gantry frames 150. The sliders 151 move along the slide grooves 110. Lateral sliding; a hydraulic telescopic rod 16 is fixed on the top of the carrier plate 11. The hydraulic telescopic rod 16 is controlled to extend and retract by the controller. A connecting seat 152 is provided at the bottom of the slide table 15. The movable end of the hydraulic telescopic rod 16 is fixed to the connecting seat 152. Limit switches 111 are installed at both ends of the slide groove 110 on one side. The limit switches 111 control the hydraulic telescopic rod 16 through the controller. The soil breaking device 2 and the conveyor 3 are both installed through the slide table 15. When the slider 151 slides to trigger the limit switch 111 on the right, the left end of the conveyor 3 disengages from the separation device 4. When the slider 151 slides to trigger the limit switch 111 on the left, the left end of the conveyor 3 inserts into the separation device 4.

[0060] In the above technical solution, a double-sided limit switch 111 is used. Its function is to ensure that the conveyor 3 has already exited when the separation device 4 starts to unload. Secondly, it ensures that the conveyor 3 has been inserted into the separation device 4 when the separation device 4 rotates to screen the material.

[0061] See Figure 3 As shown, side plates 31 are installed on both sides of the top of the conveyor 3, and a bracket 32 ​​is fixed between the conveyor 3 and the slide table 15. A slide rail 33 is installed between the soil breaking device 2 and the side plates 31 on both sides. A first bracket 34 is welded on the upper part of the slide table 15, and a first hydraulic telescopic rod 35 is installed through the first bracket 34. The soil breaking device 2 is driven to move by the first hydraulic telescopic rod 35. There are two first hydraulic telescopic rods 35, one in front and one in back. The extension and retraction of the first hydraulic telescopic rod 35 is controlled by the controller.

[0062] In the above technical solution, the extension of the first hydraulic telescopic rod 35 allows the soil breaking device 2 to be inserted into a deeper soil layer.

[0063] Based on the planting depth of Corydalis, the insertion depth of the soil-breaking device 2 into the soil should be adjusted reasonably to avoid shoveling up too much soil and avoid increasing unnecessary screening.

[0064] Secondly, after harvesting, the first hydraulic telescopic rod 35 can be retracted to allow the soil-breaking device 2 to detach from the ground, so that the device can be easily dragged away.

[0065] See Figure 3 and Figure 5 As shown, the soil-breaking device 2 includes a soil-breaking bucket 21, a drive motor 22, and a rotating roller 23. The soil-breaking bucket 21 is slidably installed between the side plates 31 on both sides via the slide rail 33. The soil-breaking bucket 21 is inclined downwards, and a soil-breaking cone 24 is provided at the inclined downward end of the soil-breaking bucket 21. The rotating roller 23 is installed on the inner side of the soil-breaking bucket 21 via bearings. The drive motor 22 is fixed on the outer side of the soil-breaking bucket 21. The drive motor 22 and the rotating roller 23 are driven by a belt transmission mechanism. Soil-breaking plates 231 are evenly distributed on the outer wall of the rotating roller 23. A discharge port 210 is provided at the bottom of the soil-breaking bucket 21, which corresponds to the conveyor 3. When the rotating roller 23 rotates, it breaks up the soil clods entering the soil-breaking bucket 21 and pushes them toward the discharge port 210. The movable end of the first hydraulic telescopic rod 35 is fixed to the outer wall of the soil-breaking bucket 21. The speed of the drive motor 22 is adjusted by the controller.

[0066] The agricultural machinery tows the carrier plate 11 forward on the ground, causing the soil-breaking bucket 21 to continuously shovel soil into the ground. The soil shoveled in is initially divided into blocks by the soil-breaking cone 24, and then the soil-breaking plate 231 on the surface of the rotating roller 23 breaks up the blocks of soil again. The broken soil and corydalis are then thrown into the discharge port 210 and fall onto the conveyor 3.

[0067] See Figures 3 to 11As shown, the separation device 4 includes a frame 41, a bearing seat 42, a bearing 43, an outer screen cylinder 44, an inner screen cylinder 45, a first drive motor 46, a second drive motor 47, a retaining cover 48, a material discharge device 49, a hydraulic jack 410, a first bearing 411, and a second bearing 412. The first drive motor 46, the second drive motor 47, and the hydraulic jack 410 are all connected and controlled by the controller. The left end of the frame 41 and the carrier plate 11 are rotatably connected by a pin. The hydraulic jack 410 is rotatably mounted by a pin. The hydraulic jack 410 is installed between the carrier plate 11 and the frame 41. When the hydraulic jack 410 is raised to its limit position, the frame 41 rotates to be perpendicular to the carrier plate 11. When the hydraulic jack 410 is retracted to its limit position, the frame 41 is parallel to the carrier plate 11. Two bearing seats 42 are arranged parallel to each other on the left and right sides. The lower end of the bearing seat 42 is fixed to the frame 41. The bearing 43 is installed between the bearing seat 42 and the outer screen cylinder 44. The inner screen cylinder 45 is rotatably installed on the carrier plate 11 via the first bearing 411. On the right side of the inner screen cylinder 44, the material discharge device 49 is disposed on the left side of the outer screen cylinder 44 via a second bearing 412. A connecting arm 413 is welded between the material discharge device 49 and the frame 41. The position of the material discharge device 49 is fixed, and the outer screen cylinder 44 rotates along the second bearing 412. The retaining cover 48 is fixedly installed between the two bearing seats 42. The outer screen cylinder 44 is located inside the retaining cover 48 and is clearance-fitted with the retaining cover 48. A slag discharge port 4 is provided at the bottom of the retaining cover 48. 81. The lower end of the slag discharge port 481 passes through the frame 41. A base plate 414 is provided on both the front and rear sides of the frame 41. The first drive motor 46 and the second drive motor 47 are respectively mounted on the base plate 414 on the front and rear sides. The first drive motor 46 is driven by the outer screen cylinder 44 through a belt drive mechanism. The second drive motor 47 is driven by the inner screen cylinder 45 through a belt drive mechanism. The outer screen cylinder 44 and the inner screen cylinder 45 rotate in opposite directions. The conveyor 3 is inserted from the left side of the inner screen cylinder 45.

[0068] In the above technical solution, there is a speed difference between the outer screen cylinder 44 and the inner screen cylinder 45. The speed of the outer screen cylinder 44 is controlled at 200~400 rpm, and the speed of the inner screen cylinder 45 is 100~180 rpm.

[0069] The inner screen cylinder 45 initially refines the material input from the three points of the conveyor, and throws the refined soil and Corydalis mixture into the outer screen cylinder 44. Since the inner screen cylinder 45 is always rotating, the soil carried up by the outer screen cylinder 44 when it rotates will fall onto the surface of the outer screen cylinder 44, and the rotation of the outer screen cylinder 44 will further refine this part of the soil.

[0070] The rotation of the outer sieve cylinder 44 separates the soil and Corydalis rhizome. The separated soil is refined during the rotation process and is thrown out. The thrown soil powder is discharged directly to the ground from the slag discharge port 481. This operation method is not affected by crosswinds, ensuring that there is no large amount of dust in the working environment.

[0071] After separation, the frame 41 is rotated to a vertical position by the lifting of the hydraulic jack 410, and the remaining Corydalis filaments are unloaded through the unloading device 49.

[0072] Along with the unloading process, some residues that cannot be refined are also unloaded, such as small stones and some hard, unrefined clods of soil.

[0073] When the separation device 4 is rotated to a vertical position, the outer screen cylinder 44 can be rinsed by spraying water at the slag discharge port 481.

[0074] The inner screen cylinder 45 can also be flushed with water pipes, and during the flushing process, the inner screen cylinder 45 and the outer screen cylinder 44 are kept rotating to throw out the washed mud and water.

[0075] See Figure 9 and Figure 10 As shown, the outer screen cylinder 44 includes a frame 441, reinforcing rods 442, and a screen 443. Two frames 441 are arranged on the left and right sides. The reinforcing rods 442 are fixedly installed between the two frames 441. Multiple reinforcing rods 442 are arranged in a ring. The screen 443 is fixed between the two frames 441 and located inside the multiple reinforcing rods 442. The reinforcing rods 442 act on the outer wall of the screen 443. The inner ring of the bearing 43 is fixed to the frame 441. The inner screen cylinder 45 is assembled with the right frame 441. The unloading device 49 is assembled with the left frame 441.

[0076] The reinforcing rod 442 serves as a connector and also reinforces the outer side of the screen 443.

[0077] The 443 sieve is made of stainless steel with rhomboid or circular sieve holes. The sieve hole size is smaller than that of the standard size of Corydalis yanhusuo.

[0078] When the screen 443 rotates, the soil is thrown up and falls, and is subjected to the cutting action of the screen holes. The soil is refined into powder and then thrown out.

[0079] See Figure 9 , Figure 12 and Figure 13As shown, the right end of the inner screen cylinder 45 is open, and the left end is closed. An end cover 451 is detachably installed on the right end of the inner screen cylinder 45. An inlet 452 for entering the conveyor 3 is provided at the axial center of the end cover 451. Discharge chutes 453 are evenly distributed on the outer wall of the inner screen cylinder 45. Soil entering the inner screen cylinder 45 is thrown out through the discharge chutes 453. Crushing rods 454 are evenly distributed on the outer wall of the inner screen cylinder 45. The ends of the crushing rods 454 are clearance-fitted with the screen 443. The inner screen cylinder 45 is rotatably installed through the first bearing 411. A portion of the inner screen cylinder 45 is located outside the outer screen cylinder 44 for cooperation with the belt drive mechanism. A first shaft seal 455 is installed between the inner screen cylinder 45 and the right side frame 441.

[0080] See Figure 8 As shown, in this embodiment, the length of the inner screen cylinder 45 is 1 / 2 the length of the outer screen cylinder 44.

[0081] This structure ensures that the internal space of the outer screen cylinder 44 is not excessively encroached upon by the inner screen cylinder 45.

[0082] See Figure 10 , Figure 14 and Figure 15 As shown, the unloading device 49 includes a collecting hopper 491 and a discharging hopper 492. The collecting hopper 491 is rotatably mounted to the left side frame 441 via the second bearing 412. The discharging hopper 492 is fixed to the left side axis of the collecting hopper 491. The end of the discharging hopper 492 away from the collecting hopper 491 is bent towards the vertical frame 41, so that when the frame 41 is rotated to the vertical, the opening of the discharging hopper 492 tilts downward to discharge the material in the discharging hopper 492. A conical opening 493 is provided on the right side of the collecting hopper 491. A guide cover 4430 is provided inside the screen 443 near the left side. The guide cover 4430 is inserted into the collecting hopper 491 through the opening 493. The connecting arm 413 is welded and fixed to the discharging hopper 492.

[0083] See Figure 3 and Figure 14 As shown, a pad 494 is provided on the outer side of the unloading hopper 492. When the frame 41 is rotated to vertical, the pad 494 touches the ground. The pad 494 is made of elastic rubber.

[0084] After the field harvesting is completed and the material is thoroughly screened, the controller first controls the hydraulic telescopic rod 16 to extend, pushing the slide table 15 to move laterally to the right. The slider 151 triggers the right limit switch 111. At this time, the left end of the conveyor 3 is completely separated from the separation device 4 to avoid equipment structure collision and material residue jamming during the unloading process.

[0085] Subsequently, the controller controls the hydraulic jack 410 to extend upward, driving the frame 41 to rotate around the pin of the carrier plate 11 until the frame 41 is in a vertical state, completing the attitude switch of the separation device 4.

[0086] After the separation device 4 is verticalized, the finished Corydalis rhizome, hard soil clods, stones, and other materials remaining inside the outer screen cylinder 44 fall into the collection hopper 491 under the action of gravity through the guide cover 4430, and are finally discharged downwards at an angle through the curved discharge hopper 492, completing the automated unloading operation. During the unloading process, the rubber pad 494 on the outside of the discharge hopper 492 touches the ground for support, playing a role in buffering and shock absorption, stabilizing the unloading posture, and preventing material spillage and loss due to equipment shaking.

[0087] After unloading, the equipment can initiate a self-cleaning process. Workers can access cleaning water through the slag discharge port 481 and the inlet 452 at the end of the inner screen cylinder 45. The controller continuously operates the first drive motor 46 and the second drive motor 47, maintaining the inner and outer screen cylinders in opposite directions. Once inside the screen cylinder, the cleaning water, along with the rotation of the cylinder, thoroughly washes all working components, including the screen mesh 443, the throwing chute 453, and the crushing rod 454. Adhering soil and slurry are fully washed away and ejected from the equipment by centrifugal force, achieving comprehensive, all-around self-cleaning of the separation device 4, effectively preventing screen blockage and ensuring the accuracy of the next operation. After cleaning, the controller retracts the hydraulic push rod 410, returning the separation device 4 to a horizontal position, completing one work cycle.

[0088] After all harvesting operations are completed, the controller retracts the first hydraulic telescopic rod 35, which drives the soil-breaking bucket 21 to move upward and off the ground. The equipment can be directly towed and transported by agricultural machinery without the need for manual disassembly and adjustment, making transportation very convenient.

[0089] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A device for harvesting Corydalis rhizome, characterized in that: It includes a vehicle device (1), a soil-breaking device (2), a conveyor (3), and a separation device (4); The vehicle device (1) is dragged along the ground. The vehicle device (1) is used to connect with agricultural machinery and move by the traction of agricultural machinery. The soil breaking device (2) and the conveyor (3) are slidably engaged. One end of the soil breaking device (2) is inserted obliquely into the soil. As the carrier device (1) moves, the soil breaking device (2) shovels out the soil and corydalis and conveys it to the conveyor (3). The soil breaking device (2) and the conveyor (3) are installed through the carrier device (1) and can move as a whole along the lateral direction of the carrier device (1). The separation device (4) is rotated and installed at the end of the carrier device (1) away from the agricultural machinery. After the conveyor (3) is displaced, it is inserted into the separation device (4), so that the mixture of soil and corydalis transported by the conveyor (3) is transported to the separation device (4) for separation. The separated broken soil is discharged from the bottom of the separation device (4), while the corydalis is stored in the separation device (4). The controller is used to connect and control the vehicle device (1), the excavation device (2), the conveyor (3) and the separation device (4).

2. The Corydalis harvesting device according to claim 1, characterized in that: The vehicle device (1) includes a vehicle plate (11) and rollers (12) that are rolled and supported on the vehicle plate (11). A traction bracket (13) is provided at the right end of the vehicle plate (11). The traction bracket (13) is Y-shaped and is connected to the agricultural machinery. An installation slot (14) is provided on the left side of the vehicle plate (11). The separation device (4) is rotatably installed at the installation slot (14). The soil and debris separated by the separation device (4) is discharged to the ground through the installation slot (14). Slide grooves (110) are provided on the front and rear sides of the vehicle plate (1). A slide platform (15) is provided above the vehicle plate (11). Two or more gantry frames (150) are fixed at the bottom of the slide platform (15). Slider blocks (151) are detachably installed on the inner walls of both sides of the gantry frames (150). The sliders (151) move along the slide grooves (110). Lateral sliding; a hydraulic telescopic rod (16) is fixed on the top of the carrier plate (11). The hydraulic telescopic rod (16) is controlled to extend and retract by the controller. A connecting seat (152) is provided at the bottom of the slide table (15). The movable end of the hydraulic telescopic rod (16) is fixed to the connecting seat (152). Limit switches (111) are installed at both ends of the slide groove (110) on one side. The limit switches (111) control the hydraulic telescopic rod (16) through the controller. The soil breaking device (2) and the conveyor (3) are both installed through the slide table (15). When the slider (151) slides to trigger the limit switch (111) on the right, the left end of the conveyor (3) disengages from the separation device (4). When the slider (151) slides to trigger the limit switch (111) on the left, the left end of the conveyor (3) is inserted into the separation device (4).

3. The Corydalis harvesting device according to claim 2, characterized in that: Side plates (31) are installed on both sides of the top of the conveyor (3). A bracket (32) is fixed between the conveyor (3) and the slide (15). A slide rail (33) is installed between the soil breaking device (2) and the side plates (31) on both sides. A first bracket (34) is welded on the upper part of the slide (15). A first hydraulic telescopic rod (35) is installed through the first bracket (34). The soil breaking device (2) is driven to move by the first hydraulic telescopic rod (35). There are two first hydraulic telescopic rods (35) in front and behind. The first hydraulic telescopic rod (35) is controlled to extend and retract by the controller.

4. The Corydalis harvesting device according to claim 3, characterized in that: The soil-breaking device (2) includes a soil-breaking bucket (21), a drive motor (22), and a rotating roller (23). The soil-breaking bucket (21) is slidably installed between the side plates (31) on both sides via the slide rail (33). The soil-breaking bucket (21) is inclined downwards, and a soil-breaking cone (24) is provided at the inclined downward end of the soil-breaking bucket (21). The rotating roller (23) is installed on the inner side of the soil-breaking bucket (21) via a bearing. The drive motor (22) is fixed on the outer side of the soil-breaking bucket (21). The drive motor (22) and the rotating roller (23) are connected. 3) The transmission is carried out through a belt drive mechanism. The outer wall of the rotating roller (23) is evenly distributed with soil breaking plates (231). The bottom of the soil breaking bucket (21) is provided with a discharge port (210). The discharge port (210) corresponds to the conveyor (3). When the rotating roller (23) rotates, it breaks up the soil clods that enter the soil breaking bucket (21) and pushes them toward the discharge port (210). The movable end of the first hydraulic telescopic rod (35) is fixed to the outer wall of the soil breaking bucket (21). The speed of the drive motor (22) is adjusted by the controller.

5. The Corydalis harvesting device according to claim 2, characterized in that: The separation device (4) includes a frame (41), a bearing seat (42), a bearing (43), an outer screen cylinder (44), an inner screen cylinder (45), a first drive motor (46), a second drive motor (47), a retaining cover (48), a material discharge device (49), a hydraulic jack (410), a first bearing (411), and a second bearing (412). The first drive motor (46), the second drive motor (47), and the hydraulic jack (410) are all connected and controlled by the controller. The left end of the frame (41) and the carrier plate (11) are rotatably connected by a pin. The hydraulic jack (410) is rotatably connected by a pin. The hydraulic jack (410) is movably installed between the carrier plate (11) and the frame (41). When the hydraulic jack (410) is raised to its limit position, the frame (41) rotates to be perpendicular to the carrier plate (11). When the hydraulic jack (410) is retracted to its limit position, the frame (41) is parallel to the carrier plate (11). There are two bearing seats (42) arranged parallel to each other on the left and right sides. The lower end of the bearing seat (42) is fixed to the frame (41). The bearing (43) is installed between the bearing seat (42) and the outer screen cylinder (44). The inner screen cylinder (45) is rotatably installed on the first bearing (411). On the right side of the inner screen cylinder (44), the material discharge device (49) is disposed on the left side of the outer screen cylinder (44) via a second bearing (412). A connecting arm (413) is welded between the material discharge device (49) and the frame (41). The position of the material discharge device (49) is fixed, and the outer screen cylinder (44) rotates along the second bearing (412). The retaining cover (48) is fixedly installed between the two bearing seats (42). The outer screen cylinder (44) is located inside the retaining cover (48) and is clearance-fitted with the retaining cover (48). A slag discharge port is provided at the bottom of the retaining cover (48). 481), the lower end of the slag discharge port (481) passes through the frame (41); a base plate (414) is provided on the front and rear sides of the frame (41), the first drive motor (46) and the second drive motor (47) are respectively installed on the base plate (414) on the front and rear sides, the first drive motor (46) is driven by the outer screen cylinder (44) through a belt drive mechanism, the second drive motor (47) is driven by the inner screen cylinder (45) through a belt drive mechanism, the outer screen cylinder (44) and the inner screen cylinder (45) rotate in opposite directions, and the conveyor (3) is inserted from the left side of the inner screen cylinder (45).

6. The Corydalis harvesting device according to claim 5, characterized in that: The outer screen cylinder (44) includes a frame (441), reinforcing rods (442) and a screen (443). There are two frames (441) on the left and right sides. The reinforcing rods (442) are fixedly installed between the two frames (441). Multiple reinforcing rods (442) are arranged in a ring. The screen (443) is fixed between the two frames (441) and located inside the multiple reinforcing rods (442). The reinforcing rods (442) act on the outer wall of the screen (443). The inner ring of the bearing (43) is fixed to the frame (441). The inner screen cylinder (45) is assembled with the right frame (441). The unloading device (49) is assembled with the left frame (441).

7. The Corydalis harvesting device according to claim 6, characterized in that: The right end of the inner screen cylinder (45) is open, and the left end of the inner screen cylinder (45) is closed. An end cover (451) is detachably installed on the right end of the inner screen cylinder (45). An inlet (452) for entering the conveyor (3) is provided at the axial center of the end cover (451). Discharge troughs (453) are evenly distributed on the outer wall of the inner screen cylinder (45). Soil entering the inner screen cylinder (45) is thrown out through the discharge troughs (453). Crushing rods (454) are evenly distributed on the outer wall of the inner screen cylinder (45). The end of the crushing rods (454) is in clearance fit with the screen (443). The inner screen cylinder (45) is rotatably installed through the first bearing (411). A part of the inner screen cylinder (45) is located outside the outer screen cylinder (44) for cooperation with the belt drive mechanism. A first shaft seal (455) is installed between the inner screen cylinder (45) and the right side frame (441).

8. The Corydalis harvesting device according to claim 7, characterized in that: The length of the inner screen cylinder (45) is 1 / 3 to 1 / 2 of the length of the outer screen cylinder (44).

9. The Corydalis harvesting device according to claim 6, characterized in that: The unloading device (49) includes a collecting hopper (491) and a discharging hopper (492). The collecting hopper (491) is rotatably mounted to the left side frame (441) via the second bearing (412). The discharging hopper (492) is fixed at the left axis of the collecting hopper (491). The end of the discharging hopper (492) away from the collecting hopper (491) bends towards the direction perpendicular to the frame (41), so that when the frame (41) rotates to the vertical, the discharging hopper... The opening of (492) is tilted downwards to discharge the material in the discharge hopper (492). A conical opening (493) is provided on the right side of the collecting hopper (491). A guide cover (4430) is provided inside the screen (443) near the left side. The guide cover (4430) is inserted into the collecting hopper (491) through the opening (493). The connecting arm (413) is welded and fixed to the discharge hopper (492).

10. The Corydalis harvesting device according to claim 9, characterized in that: A pad (494) is provided on the outer side of the unloading hopper (492). When the frame (41) is rotated to vertical, the pad (494) touches the ground. The pad (494) is made of elastic rubber.

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