A replaceable screen cylinder ginseng seed screening machine
The screening machine, with its replaceable screen cylinder and shaftless drive structure, solves the problems of complex drum replacement and clogging in existing equipment, achieving efficient and convenient drum screening and anti-clogging effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN AGRICULTURAL UNIV
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-23
AI Technical Summary
Existing ginseng seed screening equipment suffers from problems such as inconvenient fixed installation and replacement of screens, poor grading effect, easy clogging, and high design cost. Furthermore, the traditional central shaft drive structure makes roller replacement complicated.
It adopts a replaceable screen cylinder design and uses a shaftless drive structure. The roller can be quickly replaced through a detachable protective cover and annular limit rail. Vibration is generated by the cooperation of triangular push plate and return spring to prevent blockage.
It improves the ease of disassembly and assembly of the drum screen and the efficiency of equipment maintenance, enhances the screening and grading accuracy and anti-clogging performance, and reduces equipment costs and safety hazards.
Smart Images
Figure CN224389324U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening machine technology, and in particular to a ginseng seed screening machine with replaceable sieve cylinder. Background Technology
[0002] Ginseng is an important traditional Chinese medicine widely used in the field of TCM, possessing high medicinal and economic value. In ginseng cultivation, the quality of the seeds directly affects the ginseng's growth vigor, yield, and overall quality. Therefore, efficient and precise seed selection is a crucial step in achieving high-quality, high-yield ginseng cultivation.
[0003] Traditional screening equipment is prone to debris splashing during operation, posing certain safety hazards. Different batches or varieties of ginseng seeds have certain differences in particle size and density. Fixed screen angles are difficult to meet diverse screening needs. For screening requirements of different seed specifications, existing equipment is complicated and time-consuming to replace the drum, which limits its application range. Ordinary drum screens use a central shaft drive structure, which is prone to material jamming and blockage when screening small particles and irregularly shaped seeds, and is not conducive to drum replacement.
[0004] The prior art patent CN219648061U discloses a ginseng screening machine, including a base. A support plate, a support frame, and a fixing plate are fixed to the top of the base. A shell is fixedly connected between the support plate and the fixing plate. A screening device is installed inside the shell. A feed hopper and a discharge port are respectively located on the top and bottom of the shell's side wall. This invention allows ginseng seeds to be poured into the hexagonal shell from the feed hopper by opening the latch and the screen. The drive motor is then started, causing the hexagonal shell to rotate and screen the ginseng seeds. The seeds are screened out through the screen and enter the discharge hopper through the discharge port. Because the hexagonal shell is polyhedral, the seeds bounce within it, increasing the screening speed. After screening, the motor is started, and the gears rotate rapidly in both directions. The gears mesh with the tooth grooves, driving a push rod to extend and retract the brush, automatically cleaning the screen, saving time and effort.
[0005] However, existing patents have the following drawbacks:
[0006] (1) The existing technology only has one type of screen, which results in poor grading of ginseng seeds and the screen is fixed and inconvenient to disassemble and replace.
[0007] (2) Although the existing technology can clean the screen and avoid clogging, it uses additional electrical control equipment such as motors and push rods, which increases the design cost of the device. Furthermore, the effect of cleaning the screen by brushing is poor. Utility Model Content
[0008] The purpose of this invention is to provide a ginseng seed screening machine with replaceable sieve cylinders, which can avoid problems such as material jamming and blockage during seed screening, and the inconvenience of changing the sieve cylinders.
[0009] This utility model provides a ginseng seed screening machine with a replaceable sieve cylinder, including a movable support frame, a connecting shaft rotatably connected to the side wall of the movable support frame, and a screening support frame rotatably connected to the outer wall of the connecting shaft, and further including:
[0010] The first layer of drum screen has a mounting frame fixedly connected to its outer wall. A mounting plate is fixedly connected to the through hole of the mounting frame by bolts. The second layer of drum screen is fixedly connected to the side wall of the mounting plate. The output end of the drive motor is fixedly connected to a drive gear. A driven ring gear is meshed with the side wall of the drive gear. The first layer of drum screen is fixedly connected to the inner wall of the driven ring gear.
[0011] A protective cover is fitted over the second layer of the drum screen. The top of the protective cover has a snap fastener. A connecting box is fixedly connected to the outer wall of the protective cover. A collision rod is connected through the side wall of the connecting box. One end of the collision rod is in contact with the surface of the second layer of the drum screen. The other end of the collision rod is fixedly connected to a connecting circular plate. A return spring is fixedly connected to the side wall of the connecting circular plate. The end of the return spring away from the connecting circular plate is fixedly connected to the outer surface of the connecting box.
[0012] Preferably, the outer wall of the second layer drum screen is fixedly connected to an annular limiting rail, the inner wall of the annular limiting rail is slidably connected to a supporting roller, the bottom of the supporting roller is fixedly connected to a waste collection plate, the bottom of the waste collection plate is fixedly connected to the top of the screening support frame, and the bottom of the waste collection plate is provided with a waste discharge port.
[0013] Preferably, the inner wall of the first layer of drum screen is fixedly connected to a first spiral conveyor plate, and the inner wall of the second layer of drum screen is fixedly connected to a second spiral conveyor plate.
[0014] Preferably, a connecting rod is fixedly connected to the inner side of the movable support frame, and an electric telescopic rod is rotatably connected to the outer wall of the connecting rod. A push rod is rotatably connected to the output end of the electric telescopic rod, and both ends of the push rod are fixedly connected to the inner side of the screening support frame.
[0015] Preferably, the side wall of the waste collection plate is fixedly connected to a hinge, and the outer wall of the hinge is rotatably connected to a protective cover.
[0016] Preferably, a conveyor is fixedly connected to the top of the movable support frame, a feed hopper is fixedly connected to the top of the conveyor, and a discharge hopper is fixedly connected to the bottom of the conveyor.
[0017] Preferably, a side discharge box is fixedly connected to the inner side of the screening support frame, the side discharge box is located at the bottom right end of the second layer drum screen, and a discharge hopper is fixedly connected to the side wall of the side discharge box.
[0018] Preferably, a bracket is fixedly connected to the side wall of the connecting circular plate, a triangular plate is fixedly connected to the side wall of the bracket, a triangular push plate is disposed in contact with the outer surface of the triangular plate, and the side wall of the triangular push plate is fixedly connected to the side wall of the first layer of drum screen.
[0019] The beneficial effects of this application are:
[0020] 1. This ginseng seed screening machine with replaceable screen cylinders allows for easy access to the protective cover. When material blockage or other abnormalities occur during operation of the first or second layer of the drum screen, the operator can first release the locking mechanism to expose the internal screening components for easy maintenance or replacement. The device employs a shaftless transmission structure, eliminating the traditional central shaft support method, effectively reducing mechanical interference between the drum and transmission components, and significantly improving the ease of drum disassembly and assembly. When replacing the drum screen, the operator only needs to remove the bolts between the mounting frame and the mounting plate for replacement, without disassembling other transmission components, greatly improving the maintainability and efficiency of the equipment. During reinstallation, the operator only needs to align the annular limiting rail on the outer periphery of the second layer drum screen with the support rollers to ensure accurate axial and radial positioning of the drum during rotation. Then, the protective cover is closed and the locking mechanism is tightened to complete the entire replacement process.
[0021] 2. This ginseng seed screening machine with replaceable screen cylinders features a triangular pusher plate fixed to its outer wall that rotates synchronously with the drum during the rotation of the first-layer drum screen. The pusher plate periodically contacts and applies a pushing force to the triangular plate, causing it to reciprocate along the guide direction. The triangular plate drives the support and connecting circular plate to move synchronously, disengaging the collision rod fixed to the connecting circular plate from contact with the second-layer drum screen. When the triangular pusher plate passes its effective range and no longer applies a pushing force, the connecting circular plate, under the elastic restoring force of the return spring, quickly resets the collision rod and impacts the second-layer drum screen body with a certain kinetic energy. This impact causes localized high-frequency vibration in the second-layer drum screen, dislodging materials adhering to or stuck in the screen holes, effectively preventing screen blockage. Simultaneously, the vibration of the second-layer drum screen also affects the first-layer drum screen, creating a synergistic vibration effect and further enhancing the device's self-cleaning and anti-clogging performance. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of the present utility model;
[0024] Figure 2 This is a three-dimensional schematic diagram of the screening support frame structure according to an embodiment of the present utility model;
[0025] Figure 3 This is a three-dimensional schematic diagram of the first layer drum screen structure according to an embodiment of the present invention;
[0026] Figure 4 This is a three-dimensional schematic diagram of the second-layer drum screen structure according to an embodiment of the present invention;
[0027] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged 3D view of the structure at point A in the middle;
[0028] Figure 6 This is a three-dimensional schematic diagram of the snap fastener structure according to an embodiment of the present utility model;
[0029] Figure 7 This is an embodiment of the present utility model. Figure 6 Enlarged 3D view of the structure at point B.
[0030] Icons: 101. Movable support frame; 102. Connecting shaft; 103. Screening support frame; 11. Conveyor; 12. Feed hopper; 13. Discharge hopper; 14. Side discharge box; 15. Discharge hopper; 201. Connecting rod; 202. Electric telescopic rod; 203. Push rod; 301. Drive motor; 302. Drive gear; 303. Driven ring gear; 304. First layer drum screen; 305. First spiral conveyor plate; 306. Mounting frame 307. Mounting plate; 308. Second layer drum screen; 38. Second spiral conveyor plate; 309. Annular limit rail; 310. Support roller; 311. Impurity collection plate; 312. Impurity discharge port; 401. Hinge; 402. Protective cover; 403. Buckle; 501. Connecting box; 502. Collision rod; 503. Connecting circular plate; 504. Return spring; 505. Bracket; 506. Triangular plate; 507. Triangular push plate. Detailed Implementation
[0031] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0032] Example 1
[0033] Please refer to Figures 1 to 7 This utility model provides a ginseng seed screening machine with a replaceable sieve cylinder, including a movable support frame 101, a connecting shaft 102 rotatably connected to the side wall of the movable support frame 101, and a screening support frame 103 rotatably connected to the outer wall of the connecting shaft 102, and further including:
[0034] A drive motor 301 is fixedly connected to the top of the screening support frame 103. A drive gear 302 is fixedly connected to the output end of the drive motor 301. A driven ring gear 303 is meshed with the side wall of the drive gear 302. A first-layer drum screen 304 is fixedly connected to the inner wall of the driven ring gear 303. A first spiral conveyor plate 305 is fixedly connected to the inner wall of the first-layer drum screen 304. A mounting frame 306 is fixedly connected to the outer wall of the first-layer drum screen 304. A mounting plate 307 is fixedly connected to the through hole of the mounting frame 306 by bolts. A second-layer drum screen 308 is fixedly connected to the side wall of the mounting plate 307. A second spiral conveyor plate 38 is fixedly connected to the inner wall of the second-layer drum screen 308. The screen hole size of the first-layer drum screen 304 is relatively large, and some smaller seeds and impurities fall through the screen hole into the second-layer drum screen 308 below.
[0035] The outer wall of the second-layer drum screen 308 is fixedly connected to an annular limiting rail 309. The inner wall of the annular limiting rail 309 is slidably connected to a support roller 310. The bottom of the support roller 310 is fixedly connected to an impurity collection plate 311. The bottom of the impurity collection plate 311 is fixedly connected to the top of the screening support frame 103. The bottom of the impurity collection plate 311 is provided with an impurity discharge port 312. This arrangement allows finer impurity particles to pass through the second-layer drum screen 308 and fall into the impurity collection plate 311, and be discharged through the impurity discharge port 312.
[0036] A connecting rod 201 is fixedly connected to the inner side of the movable support frame 101. An electric telescopic rod 202 is rotatably connected to the outer wall of the connecting rod 201. A push rod 203 is rotatably connected to the output end of the electric telescopic rod 202. Both ends of the push rod 203 are fixedly connected to the inner side of the screening support frame 103. The angle of the screening support frame 103 can be controlled by extending and retracting the electric telescopic rod 202, thereby pushing the screening support frame 103 to move around the connecting shaft 102 as the axis. The working tilt angle of the screening support frame 103 is adjusted so that the second layer of drum screen 308 is tilted relative to the first layer of drum screen 304 to adapt to different materials and working environments.
[0037] The side wall of the waste collection plate 311 is fixedly connected to a hinge 401. The outer wall of the hinge 401 is rotatably connected to a protective cover 402. The top of the protective cover 402 is provided with a snap fastener 403. When the snap fastener 403 is fastened, the two protective covers 402 can be closed. Under the protection of the protective cover 402, debris is prevented from flying and injuring people, thus improving the safety of the equipment and the production process.
[0038] A conveyor 11 is fixedly connected to the top of the mobile support frame 101, a feed hopper 12 is fixedly connected to the top of the conveyor 11, and a discharge hopper 13 is fixedly connected to the bottom of the conveyor 11. This arrangement is so that ginseng seeds enter through the feed hopper 12 and are then evenly transported to the discharge hopper 13 by the conveyor 11.
[0039] A side discharge box 14 is fixedly connected to the inner side of the screening support frame 103. The side discharge box 14 is located at the bottom right end of the second layer drum screen 308. This arrangement is for the second layer drum screen 308 to perform fine screening of materials. Among them, medium-sized seeds that meet the requirements are guided to the side discharge box 14 for collection. A discharge hopper 15 is fixedly connected to the side wall of the side discharge box 14.
[0040] A connecting box 501 is fixedly connected to the outer wall of the protective cover 402. A collision rod 502 is connected through the side wall of the connecting box 501. One end of the collision rod 502 is in contact with the surface of the second-layer drum screen 308. This arrangement is for the collision rod 502 to collide with the second-layer drum screen 308. A connecting circular plate 503 is fixedly connected to the other end of the collision rod 502. A return spring 504 is fixedly connected to the side wall of the connecting circular plate 503. The end of the return spring 504 away from the connecting circular plate 503 is fixedly connected to the outer surface of the connecting box 501. A bracket 505 is fixedly connected to the side wall of the connecting circular plate 503. A triangular plate 506 is fixedly connected to the side wall of the bracket 505. A triangular push plate 507 is in contact with the outer surface of the triangular plate 506. The side wall of the triangular push plate 507 is fixedly connected to the side wall of the first-layer drum screen 304.
[0041] Example 2
[0042] Based on Embodiment 1, an improvement is made: if the collision rod 502 fails to clear the blockage of the second-layer drum screen 308 after colliding with it, the drum screen can be disassembled, cleaned, or replaced. Specifically, the mounting plate 307 is fixedly connected to the through hole of the mounting bracket 306 by bolts, and the second-layer drum screen 308 is fixedly connected to the side wall of the mounting plate 307. This arrangement allows the operator to replace the screen simply by removing the bolts between the mounting bracket 306 and the mounting plate 307. The side wall of the waste collection plate 311 is fixedly connected to a hinge 401, and a protective cover 402 rotates on the outer wall of the hinge 401. A snap fastener 403 is provided on the top of the protective cover 402. This arrangement allows the two protective covers 402 to be released by opening the snap fastener 403, thereby opening the protective cover 402 and replacing the second-layer drum screen 308 and the first-layer drum screen 304 inside. After replacement, the snap fastener 403 is fastened to close the two protective covers 402.
[0043] In summary, the working principle of a ginseng seed screening machine with replaceable screen cylinder according to this utility model embodiment is as follows: Ginseng seeds enter through the feed hopper 12, and are then evenly conveyed to the discharge hopper 13 by the conveyor 11, from where they fall into the first layer of drum screen 304. The angle of the screening support frame 103 can be controlled by extending and retracting the electric telescopic rod 202, thereby pushing the screening support frame 103 to move around the connecting shaft 102 as the axis. Adjusting the working inclination angle of the screening support frame 103 makes the second layer of drum screen 308 tilt relative to the first layer of drum screen 304 to adapt to different materials and working environments. After the machine 301 is started, the drive gear 302 on its output shaft meshes with the driven ring gear 303 surrounding the outer periphery of the first layer drum screen 304 to drive the rotation of the first layer drum screen 304. During the rotation of the first layer drum screen 304, the first spiral conveying plate 305 inside generates an axial pushing force on the ginseng seeds, causing the seeds to move gradually towards the discharge end along the length of the drum under the action of gravity and spiral propulsion. During this process, the ginseng seeds with larger particle size that meet the first grade grading standard are pushed forward with the material and finally discharged through the discharge hopper 15 to complete the coarse selection operation.
[0044] Meanwhile, due to the relatively large screen aperture size of the first-layer drum screen 304, some smaller seeds and impurities pass through the screen apertures and fall into the second-layer drum screen 308 below. The second-layer drum screen 308 continues to finely screen the material, with medium-sized seeds that meet the requirements being guided to the side discharge box 14 for collection; while finer impurity particles pass through the second-layer drum screen 308 and fall into the impurity collection plate 311, and are discharged through the impurity discharge port 312. This achieves multi-stage screening and impurity separation, enabling continuous screening and grading of materials in different levels of screen cylinders, improving screening efficiency and grading accuracy, and is suitable for efficient and precise screening of ginseng seeds.
[0045] When material blockage or other abnormalities occur during the operation of the first-layer drum screen 304 or the second-layer drum screen 308, the operator can first release the snap fastener 403 to release the two protective covers 402, thereby opening the protective covers 402 and exposing the internal screening components for easy maintenance or replacement. When the drum screen needs to be replaced, simply remove the second-layer drum screen 308 and the first-layer drum screen 304 from the protective covers 402 and replace them. After replacement, close the two protective covers 402 and fasten the snap fastener 403. Because this device adopts a shaftless transmission structure design, it abandons the traditional central shaft support method, effectively reducing mechanical interference between the drum and the transmission components, and significantly improving the convenience of drum screen disassembly and assembly. When it is necessary to replace one of the second-layer drum screen 308 and the first-layer drum screen 304, the operator only needs to remove the bolts between the mounting bracket 306 and the mounting plate 307 to replace it, without disassembling other transmission components, which greatly improves the maintainability and efficiency of the equipment.
[0046] During the reinstallation process, the operator only needs to align the annular limiting rail 309 set on the outer periphery of the second layer drum screen 308 with the support roller 310 to ensure accurate axial and radial positioning of the drum during rotation. Then, close the protective cover 402 and lock the snap fastener 403 to complete the entire replacement process.
[0047] During the rotation of the first-layer drum screen 304, the triangular pusher plate 507 fixed to its outer wall rotates synchronously with the drum and periodically contacts and applies a pushing force to the triangular plate 506, thereby pushing the triangular plate 506 to reciprocate along the guide direction. The triangular plate 506 drives the bracket 505 and the connecting circular plate 503 to move synchronously, causing the collision rod 502 fixed on the connecting circular plate 503 to disengage from the contact state with the second-layer drum screen 308. When the triangular pusher plate 507 passes through the action range and no longer applies a pushing force to the triangular plate 506, under the elastic restoring force of the return spring 504, the connecting circular plate 503 drives the collision rod 502 to quickly return to its original position and impact the body of the second-layer drum screen 308 with a certain kinetic energy. This impact force causes the second-layer drum screen 308 to generate local high-frequency vibration, thereby shaking off the material attached to or stuck in the screen holes, effectively preventing screen hole blockage. At the same time, the vibration of the second-layer drum screen 308 will also have a reverse effect on the first-layer drum screen 304, forming a synergistic vibration effect, which further enhances the self-cleaning ability and anti-clogging performance of the overall device.
[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A ginseng seed screening machine with replaceable sieve cylinder, comprising a movable support frame (101), wherein a connecting shaft (102) is rotatably connected to the side wall of the movable support frame (101), a screening support frame (103) is rotatably connected to the outer wall of the connecting shaft (102), and a drive motor (301) is fixedly connected to the top of the screening support frame (103), characterized in that, Also includes: The first layer of drum screen (304) has a mounting bracket (306) fixedly connected to its outer wall. A mounting plate (307) is fixedly connected to the through hole of the mounting bracket (306) by bolts. The second layer of drum screen (308) is fixedly connected to the side wall of the mounting plate (307). The output end of the drive motor (301) is fixedly connected to a drive gear (302). A driven ring gear (303) is meshed with the side wall of the drive gear (302). The first layer of drum screen (304) is fixedly connected to the inner wall of the driven ring gear (303). A protective cover (402) is fitted over the second layer of drum screen (308). The top of the protective cover (402) is provided with a snap fastener (403). A connecting box (501) is fixedly connected to the outer wall of the protective cover (402). A collision rod (502) is connected through the side wall of the connecting box (501). One end of the collision rod (502) is in contact with the surface of the second layer of drum screen (308). The other end of the collision rod (502) is fixedly connected to a connecting circular plate (503). A return spring (504) is fixedly connected to the side wall of the connecting circular plate (503). The end of the return spring (504) away from the connecting circular plate (503) is fixedly connected to the outer surface of the connecting box (501).
2. The ginseng seed screening machine with replaceable screen cylinder according to claim 1, characterized in that: The outer wall of the second layer drum screen (308) is fixedly connected to an annular limiting rail (309), and the inner wall of the annular limiting rail (309) is slidably connected to a supporting roller (310). The bottom of the supporting roller (310) is fixedly connected to an impurity collection plate (311), the bottom of the impurity collection plate (311) is fixedly connected to the top of the screening support frame (103), and the bottom of the impurity collection plate (311) is provided with an impurity discharge port (312).
3. The ginseng seed screening machine with replaceable screen cylinder according to claim 1, characterized in that: The inner wall of the first layer of drum screen (304) is fixedly connected to a first spiral conveyor plate (305), and the inner wall of the second layer of drum screen (308) is fixedly connected to a second spiral conveyor plate (38).
4. The ginseng seed screening machine with replaceable screen cylinder according to claim 1, characterized in that: The inner side of the movable support frame (101) is fixedly connected to a connecting rod (201), and the outer wall of the connecting rod (201) is rotatably connected to an electric telescopic rod (202). The output end of the electric telescopic rod (202) is rotatably connected to a push rod (203), and both ends of the push rod (203) are fixedly connected to the inner side of the screening support frame (103).
5. The ginseng seed screening machine with replaceable screen cylinder according to claim 2, characterized in that: The side wall of the waste collection plate (311) is fixedly connected to a hinge (401), and the outer wall of the hinge (401) is rotatably connected to a protective cover (402).
6. The replaceable screen cylinder ginseng seed screening machine of claim 1, wherein: The top of the movable support frame (101) is fixedly connected to a conveyor (11), the top of the conveyor (11) is fixedly connected to a feed hopper (12), and the bottom of the conveyor (11) is fixedly connected to a discharge hopper (13).
7. The replaceable screen cylinder ginseng seed screening machine of claim 1, wherein: The inner side of the screening carrier frame (103) is fixedly connected with a side discharge box (14), which is arranged at the bottom of the right end of the second layer of drum screens (308), and the side wall of the side discharge box (14) is fixedly connected with a discharge hopper (15).
8. The replaceable screen cylinder ginseng seed screening machine of claim 1, wherein: The side wall of the connecting circular plate (503) is fixedly connected with a support (505), the side wall of the support (505) is fixedly connected with a triangular plate (506), the outer surface of the triangular plate (506) is in contact with a triangular push plate (507), and the side wall of the triangular push plate (507) is fixedly connected with the side wall of the first layer of drum screens (304).