Centrifugal equipment for ginsenoside extraction

Abstract

The invention discloses centrifugal equipment for ginsenoside extraction, and relates to the technical field of ginseng extraction.The centrifugal equipment comprises a centrifugal machine body, the top of the centrifugal machine body is provided with an extrusion mechanism for pressing ginseng downwards, and the centrifugal machine body is internally provided with a scraping mechanism for removing ginseng residues attached to the surface of a filter membrane; an adjusting mechanism used for changing the scraping mechanism is arranged outside the centrifugal machine body, a rotating mechanism used for driving the centrifugal machine body to horizontally rotate is further arranged outside the centrifugal machine body, and a servo mechanism used for driving the rotating mechanism to work is arranged at the bottom of the extrusion mechanism. Periodic pressure is applied to plant residues on a filter screen after centrifugation is completed, residual extracting solution in pores of the residues is forcibly squeezed out, the problem that high-viscosity extracting solution is retained in the residues due to surface tension or capillary action is effectively solved, loss of ginsenoside is greatly reduced, and the residues are further squeezed and dewatered.

Description

Technical Field

[0001] The invention relates to the technical field of ginseng extraction, in particular to centrifugal equipment for ginsenoside extraction. Background Art

[0002] Ginsenoside extraction involves separating the active ingredients from ginseng roots, stems, leaves, and other tissues through physical or chemical means. Common methods include solvent extraction, ultrasound-assisted extraction, microwave-assisted extraction, and supercritical fluid extraction. Extraction efficiency is influenced by factors such as raw material processing, solvent selection, temperature, and time. Ultimately, purification steps are required to enhance the purity of the saponins.

[0003] The mixture extracted by solvent extraction contains a large amount of plant residue (solid) and an extract (liquid) containing saponins. Centrifugation can quickly and thoroughly separate the solid and liquid phases, significantly improving efficiency and clarity. It is almost a necessary step, especially in large-scale or industrial production.

[0004] However, after using the existing centrifugal equipment, for extracts that are viscous or contain many fine particles, some effective ingredients may still adhere to the residue, resulting in reduced separation efficiency.

[0005] Therefore, the present invention proposes a centrifugal device for ginsenoside extraction to remedy and improve the shortcomings of the prior art. Summary of the Invention

[0006] In view of the above problems, the present invention provides a centrifugal device for ginsenoside extraction, which can effectively solve the problem in the prior art that some active ingredients may adhere to the residue, resulting in reduced separation efficiency. In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0007] The present invention discloses a centrifugal device for extracting ginsenosides, comprising a centrifuge body, a squeezing mechanism for pressing ginseng downwards provided on the top of the centrifuge body, a scraping mechanism for removing ginseng residues attached to the surface of a filter membrane provided inside the centrifuge body, an adjusting mechanism for changing the scraping mechanism provided outside the centrifuge body, a rotating mechanism for driving the centrifuge body to rotate horizontally provided outside the centrifuge body, and a servo mechanism for driving the rotating mechanism to work provided at the bottom of the squeezing mechanism;

[0008] The extrusion mechanism includes a base fixedly connected to the centrifuge body, a vertical rod fixedly connected to the top of the base, a cross rod fixedly connected to the middle of the vertical rod, a T-shaped moving rod slidably connected to one end of the cross rod away from the vertical rod, and a circular extrusion plate fixedly connected to the bottom of the moving rod.

[0009] Furthermore, the extrusion mechanism also includes a motor fixedly connected to the top of the vertical rod, the output end of the motor is fixedly connected to a first transmission shaft, and the end of the first transmission shaft away from the motor is fixedly connected to a rotating shaft.

[0010] Furthermore, the end of the rotating shaft away from the first transmission shaft is fixedly connected to a connecting rod, the horizontal section of the movable rod is provided with a sliding groove, and the end of the connecting rod away from the rotating shaft is slidably connected to the sliding groove.

[0011] Furthermore, a first limiting block is fixedly connected to the outside of the vertical section of the moving rod, and a first spring is sleeved on the outside of the moving rod, and the first spring is located between the cross bar and the first limiting block.

[0012] Furthermore, the scraping mechanism includes scrapers symmetrically arranged inside the centrifuge body, each scraper is fixedly connected to an arc plate at the bottom, each scraper is fixedly connected to a pull rod at the top, a baffle is fixedly connected between the tops of the two pull rods, the baffle is fixedly connected to a fixed block at the bottom, and the bottom of the fixed block is fixedly connected to the top of the moving rod.

[0013] Furthermore, the scraping mechanism also includes a support rod symmetrically fixedly connected to the cross rod, the pull rod slides through the support rod, a second spring is slidably sleeved on the outside of the pull rod, and a second limit block is also fixedly connected to the outside of the pull rod, and the second spring is located between the support rod and the second limit block.

[0014] Furthermore, the adjustment mechanism includes a mounting seat symmetrically fixedly connected to the top of the base, the mounting seat is symmetrically fixedly connected to a sliding rod, the outside of the sliding rod is symmetrically slidably connected to a movable seat, each movable seat is fixedly connected to the top with an L-shaped plate, and the horizontal section of the L-shaped plate is slidably connected to the scraper.

[0015] Furthermore, the adjustment mechanism also includes a bidirectional screw rod rotatably connected to the mounting seat, the bidirectional screw rod is threadedly connected to the two movable seats, and one end of the bidirectional screw rod is fixedly connected to a knob.

[0016] Furthermore, the rotating mechanism includes a ring fixedly connected to the outside of the centrifuge body, a plurality of grooves are opened on the outside of the ring, a rotating disk is rotatably connected to the top of the base, a shift rod is fixedly connected to the side of the rotating disk, and the shift rod is engaged with the groove.

[0017] Furthermore, the servo mechanism includes a second transmission shaft connected to the cross bar for rotation perpendicularly, the bottom of the second transmission shaft is fixedly connected to the rotating shaft of the rotating disk, the top of the second transmission shaft is fixedly connected to a second bevel gear, and the outside of the first transmission shaft is also fixedly connected to a first bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. This device is equipped with an extrusion mechanism. After centrifugation, it applies periodic pressure to the plant residue on the filter screen, forcibly squeezing out the extract remaining in the pores of the residue. This effectively overcomes the problem of high-viscosity extract being retained in the residue due to surface tension or capillary action, greatly reducing the loss of ginsenosides. The residue is further squeezed and deliquified, thereby significantly reducing the residue of effective ingredients such as ginsenosides in the solid residue. This not only improves the separation efficiency, but also enhances the clarity of the extract and the recovery rate of saponins.

[0020] 2. This device is equipped with a scraping mechanism and an adjustment mechanism. Through the bidirectional screw and knob in the adjustment mechanism, the operator can flexibly adjust the scraper position according to the viscosity, solid content and residue thickness of different extract materials, thereby achieving precise control of the cleaning force and range of the filter membrane surface, further reducing the waste of residue, and thus improving the separation of the extract from the residue.

[0021] 3. This device is equipped with a rotating mechanism and a scraping mechanism. During or after the centrifugation process, the scraper can reciprocate and clean the surface of the filter membrane to remove attached fine particles and sticky substances in time to prevent the filter membrane from being blocked. At the same time, the rotating mechanism drives the centrifuge body to make intermittent horizontal rotation to make the residue more evenly distributed, avoid local accumulation, improve the filtration flux and separation efficiency, and ensure that the equipment maintains stable performance during long-term operation.

[0022] 4. This device organically integrates functional modules such as extrusion, scraping, and rotation through mechanical transmission elements such as eccentric wheels, connecting rods, bevel gears, and drag pulleys to achieve coordinated operation, simplify power configuration, and implement programmed operation of the entire process of centrifugation-scraping-extrusion, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0024] Figure 1 It is a three-dimensional structural diagram of the extrusion mechanism in the present invention.

[0025] Figure 2 It is a three-dimensional structural diagram of the adjustment mechanism in the present invention.

[0026] Figure 3 For the present invention Figure 2 A magnified view of the structure at point A.

[0027] Figure 4 It is a three-dimensional structural diagram of the servo mechanism in the present invention.

[0028] Figure 5 It is a three-dimensional structural diagram of the scraping mechanism in the present invention.

[0029] Figure 6 It is a cross-sectional view of the scraping mechanism in the present invention.

[0030] Figure 7 For the present invention Figure 6 A magnified view of the structure at point B.

[0031] The numbers in the figure represent: 10, centrifuge body; 20, extrusion mechanism; 201, base; 202, vertical rod; 203, horizontal rod; 204, moving rod; 205, extrusion plate; 206, motor; 207, first transmission shaft; 208, rotating shaft; 209, connecting rod; 210, first limit block; 211, first spring; 212, slide; 30, scraping mechanism; 301, scraper; 302, curved plate; 303, support rod; 304, pull rod; 30 5. Second limit block; 306. Second spring; 307. Stop rod; 308. Fixed block; 40. Adjustment mechanism; 401. Moving seat; 402. Sliding rod; 403. Bidirectional screw rod; 404. Knob; 405. Mounting seat; 406. L-shaped plate; 50. Rotating mechanism; 501. Ring; 502. Groove; 503. Rotating disk; 504. Lever; 60. Servo mechanism; 601. Second transmission shaft; 602. First bevel gear; 603. Second bevel gear. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to the embodiments.

[0034] See Figures 1 to 7The centrifugal device for extracting ginsenosides of this embodiment includes a centrifuge body 10. A squeezing mechanism 20 for pressing ginseng is provided on the top of the centrifuge body 10. A scraping mechanism 30 for removing ginseng residues attached to the surface of the filter membrane is provided inside the centrifuge body 10. An adjusting mechanism 40 for changing the scraping mechanism 30 is provided outside the centrifuge body 10. A rotating mechanism 50 for driving the centrifuge body 10 to rotate horizontally is also provided outside the centrifuge body 10. A servo mechanism 60 for driving the rotating mechanism 50 to work is provided at the bottom of the squeezing mechanism 20.

[0035] The extrusion mechanism 20 includes a base 201 fixedly connected to the centrifuge body 10, a vertical rod 202 fixedly connected to the top of the base 201, a cross bar 203 fixedly connected to the middle of the vertical rod 202, a T-shaped moving rod 204 slidably connected to the end of the cross bar 203 away from the vertical rod 202, and a circular extrusion plate 205 fixedly connected to the bottom of the moving rod 204.

[0036] The extrusion mechanism 20 further includes a motor 206 fixedly connected to the top of the vertical rod 202 . The output end of the motor 206 is fixedly connected to a first transmission shaft 207 . The end of the first transmission shaft 207 away from the motor 206 is fixedly connected to a rotating shaft 208 .

[0037] The end of the rotating shaft 208 away from the first transmission shaft 207 is fixedly connected to a connecting rod 209 . A sliding groove 212 is defined in the horizontal section of the movable rod 204 . The end of the connecting rod 209 away from the rotating shaft 208 is slidably connected to the sliding groove 212 .

[0038] The outside of the vertical section of the moving rod 204 is fixedly connected to a first limiting block 210 . The outside of the moving rod 204 is also sleeved with a first spring 211 , and the first spring 211 is located between the cross bar 203 and the first limiting block 210 .

[0039] During specific operation, after centrifugal separation, the first transmission shaft 207 is driven to rotate by the motor 206, and the first transmission shaft 207 drives the connecting rod 209 to rotate synchronously through the rotating shaft 208. The connecting rod 209 slides in the slide groove 212 during the rotation process, and the connecting rod 209 and the rotating shaft 208 form a crank mechanism, thereby driving the moving rod 204 to move back and forth up and down, and the moving rod 204 synchronously drives the extrusion plate 205 to move up and down synchronously. During the up and down movement of the extrusion plate 205 in the centrifuge body 10, periodic pressure is applied to the plant residue on the filter screen, forcibly squeezing out the extract remaining in the pores of the residue, effectively overcoming the problem of high-viscosity extract being retained in the residue due to surface tension or capillary action, greatly reducing the loss of ginsenosides, and further squeezing and deliquifying the residue, thereby significantly reducing the residue of effective ingredients such as ginsenosides in the solid residue. During the movement of the moving rod 204, the first spring 211 is used to provide auxiliary power for the upward movement of the moving rod 204.

[0040] The scraping mechanism 30 includes scrapers 301 symmetrically arranged inside the centrifuge body 10, each scraper 301 is fixedly connected to an arc plate 302 at the bottom, each scraper 301 is fixedly connected to a pull rod 304 at the top, a blocking rod 307 is fixedly connected between the tops of the two pull rods 304, the bottom of the blocking rod 307 is fixedly connected to a fixed block 308, and the bottom of the fixed block 308 is fixedly connected to the top of the moving rod 204.

[0041] The scraping mechanism 30 also includes a support rod 303 symmetrically fixedly connected to the cross rod 203, a pull rod 304 slidingly passes through the support rod 303, a second spring 306 is slidably sleeved on the outside of the pull rod 304, and a second limit block 305 is also fixedly connected to the outside of the pull rod 304, and the second spring 306 is located between the support rod 303 and the second limit block 305, and a through groove is provided on the surface of the blocking rod 307 and the support rod 303, and the through groove is used for the horizontal movement of the pull rod 301.

[0042] During specific operation, the centrifuge body 10 is driven to rotate by the rotating mechanism 50. At this time, the scraper 301 contacts the filter screen of the centrifuge body 10, thereby reciprocatingly cleaning the surface of the filter membrane, promptly removing attached fine particles and viscous substances, and preventing the filter membrane from being blocked. In the squeezing mechanism 20, when the motor 206 drives the moving rod 204 to move up and down, the moving rod 204 drives the pull rod 304 to move up and down synchronously through the fixed block 308 and the baffle 307. The pull rod 304 synchronously drives the scraper 301 and the curved plate 302 to move up and down along the surface of the filter membrane. When the pull rod 304 moves upward, the second spring 306 is compressed. When the pull rod 304 moves downward, the compressed second spring 306 provides elastic force to assist the curved plate 302 to move downward. The curved plate 302 and the scraper 301 that move up and down clean the surface of the filter membrane reciprocally, promptly removing attached fine particles and viscous substances, and facilitating the subsequent squeezing of the residue.

[0043] The adjustment mechanism 40 includes a mounting seat 405 symmetrically fixedly connected to the top of the base 201, the mounting seat 405 is symmetrically fixedly connected to the sliding rod 402, the outside of the sliding rod 402 is symmetrically slidably connected to the movable seat 401, and each movable seat 401 is fixedly connected to the top with an L-shaped plate 406, and the horizontal section of the L-shaped plate 406 is slidably connected to the scraper 301.

[0044] The adjustment mechanism 40 further includes a bidirectional screw rod 403 rotatably connected to the mounting seat 405 . The bidirectional screw rod 403 is threadedly connected to the two movable seats 401 . One end of the bidirectional screw rod 403 is fixedly connected to a knob 404 .

[0045] During specific operation, the bidirectional screw 403 is driven to rotate by rotating the knob 404, and the bidirectional screw 403 synchronously drives the two movable seats 401 to move closer to or away from each other along the slide rod 402, and the movable seat 401 synchronously drives the L-shaped plate 406 and the scraper 301 to move. By adjusting the bidirectional screw 403 and the knob 404 in the mechanism 40, the operator can flexibly adjust the position of the scraper 301 according to the viscosity, solid content and residue thickness of different extraction materials, so as to achieve precise control of the cleaning force and range of the filter membrane surface.

[0046] The rotating mechanism 50 includes a ring 501 fixedly connected to the outside of the centrifuge body 10, with multiple grooves 502 on the outside of the ring 501. A rotating disk 503 is rotatably connected to the top of the base 201, and a lever 504 is fixedly connected to the side of the rotating disk 503, which engages with the groove 502.

[0047] During specific operation, the motor 206 drives the rotating disk 503 to rotate, and the rotating rotating disk 503 drives the ring 501 to rotate through the lever 504. The rotating ring 501 drives the centrifuge body 10 to rotate horizontally on the base 201. The rotating mechanism 50 drives the centrifuge body 10 to perform intermittent horizontal rotation, so that the residue is distributed more evenly, avoiding local accumulation, improving the filtration flux and separation efficiency, and ensuring that the equipment maintains stable performance during long-term operation.

[0048] The servo mechanism 60 includes a second transmission shaft 601 that is rotatably connected to the cross bar 203. The bottom of the second transmission shaft 601 is fixedly connected to the rotating shaft of the rotating disk 503. The top of the second transmission shaft 601 is fixedly connected to a second bevel gear 603. The outside of the first transmission shaft 207 is also fixedly connected to a first bevel gear 602, and the first bevel gear 602 is meshed with the second bevel gear 603.

[0049] During specific operation, when the motor 206 rotates, it drives the first transmission shaft 207 to rotate, and the first transmission shaft 207 synchronously drives the first bevel gear 602 to rotate. The first bevel gear 602 drives the second transmission shaft 601 to rotate through the second bevel gear 603, and the second transmission shaft 601 drives the rotating disk 503 to rotate synchronously, thereby driving the centrifuge body 10 to rotate horizontally, organically integrating functional modules such as extrusion, scraping, and rotation to achieve coordinated operation, simplify the power configuration, realize the programmed operation of the entire process of centrifugation-scraping-extrusion, and improve production efficiency.

[0050] Working principle:

[0051] After centrifugal separation, the first transmission shaft 207 is driven to rotate by the motor 206, and the first transmission shaft 207 drives the connecting rod 209 to rotate synchronously through the rotating shaft 208. The connecting rod 209 slides in the slide groove 212 during the rotation, and a crank mechanism is formed by the connecting rod 209 and the rotating shaft 208, thereby driving the moving rod 204 to move back and forth up and down. The moving rod 204 synchronously drives the extrusion plate 205 to move up and down synchronously. The extrusion plate 205 applies periodic pressure to the plant residue on the filter screen during the up and down movement in the centrifuge body 10, forcibly squeezing out the extract remaining in the residue pores. When the motor 206 rotates, it drives the first transmission shaft 207 to rotate, and the first transmission shaft 207 synchronously drives the first bevel gear 602 to rotate, and the first bevel gear 602 drives the second bevel gear 603 through the second bevel gear 603. The driving shaft 601 rotates, and the second transmission shaft 601 drives the rotating disk 503 to rotate synchronously, thereby driving the centrifuge body 10 to rotate horizontally. The rotating mechanism 50 drives the centrifuge body 10 to rotate intermittently horizontally. The centrifuge body 10 is driven to rotate by the rotating mechanism 50. At this time, the scraper 301 contacts the filter screen of the centrifuge body 10, thereby reciprocatingly cleaning the surface of the filter membrane. The knob 404 is turned to drive the bidirectional screw 403 to rotate. The bidirectional screw 403 synchronously drives the two movable seats 401 to move closer to or away from each other along the slide bar 402. The movable seat 401 synchronously drives the L-shaped plate 406 and the scraper 301 to move. By adjusting the bidirectional screw 403 and the knob 404 in the mechanism 40, the operator can flexibly adjust the position of the scraper 301 according to the viscosity, solid content and residue thickness of different extractable materials.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A centrifugal device for extracting ginsenosides, characterized in that: The centrifuge body (10) comprises a centrifuge body (10), wherein a squeezing mechanism (20) for pressing ginseng downward is provided on the top of the centrifuge body (10), a scraping mechanism (30) for removing ginseng residues attached to the surface of the filter membrane is provided inside the centrifuge body (10), an adjusting mechanism (40) for changing the scraping mechanism (30) is provided outside the centrifuge body (10), a rotating mechanism (50) for driving the centrifuge body (10) to rotate horizontally is also provided outside the centrifuge body (10), and a servo mechanism (60) for driving the rotating mechanism (50) to work is provided at the bottom of the squeezing mechanism (20); The squeezing mechanism (20) comprises a base (201) fixedly connected to the centrifuge body (10); a vertical rod (202) is fixedly connected to the top of the base (201); a cross rod (203) is fixedly connected to the middle of the vertical rod (202); a T-shaped moving rod (204) is slidably connected to one end of the cross rod (203) away from the vertical rod (202); and a circular squeezing plate (205) is fixedly connected to the bottom of the moving rod (204).

2. The centrifugal device for extracting ginsenosides according to claim 1, characterized in that: The extrusion mechanism (20) further comprises a motor (206) fixedly connected to the top of the vertical rod (202); an output end of the motor (206) is fixedly connected to a first transmission shaft (207); and an end of the first transmission shaft (207) away from the motor (206) is fixedly connected to a rotating shaft (208).

3. The centrifugal device for extracting ginsenosides according to claim 2, characterized in that: The end of the rotating shaft (208) away from the first transmission shaft (207) is fixedly connected to a connecting rod (209); the horizontal section of the moving rod (204) is provided with a sliding groove (212); the end of the connecting rod (209) away from the rotating shaft (208) is slidably connected to the sliding groove (212).

4. The centrifugal device for extracting ginsenosides according to claim 1, characterized in that: The outside of the vertical section of the moving rod (204) is fixedly connected to a first limiting block (210), and the outside of the moving rod (204) is also sleeved with a first spring (211), and the first spring (211) is located between the crossbar (203) and the first limiting block (210).

5. The centrifugal device for extracting ginsenosides according to claim 1, characterized in that: The scraping mechanism (30) includes scrapers (301) symmetrically arranged inside the centrifuge body (10), each scraper (301) is fixedly connected to an arc plate (302) at the bottom, each scraper (301) is fixedly connected to a pull rod (304) at the top, a blocking rod (307) is fixedly connected between the tops of the two pull rods (304), the bottom of the blocking rod (307) is fixedly connected to a fixed block (308), and the bottom of the fixed block (308) is fixedly connected to the top of the moving rod (204).

6. The centrifugal device for extracting ginsenosides according to claim 5, characterized in that: The scraping mechanism (30) further comprises a support rod (303) symmetrically fixedly connected to the cross rod (203); the pull rod (304) slides through the support rod (303); a second spring (306) is slidably sleeved on the outside of the pull rod (304); a second limit block (305) is also fixedly connected to the outside of the pull rod (304); and the second spring (306) is located between the support rod (303) and the second limit block (305).

7. The centrifugal device for extracting ginsenosides according to claim 1, characterized in that: The adjustment mechanism (40) includes a mounting seat (405) symmetrically fixedly connected to the top of the base (201), the mounting seat (405) is symmetrically fixedly connected to a slide rod (402), the slide rod (402) is symmetrically slidably connected to a movable seat (401) outside, and each movable seat (401) is fixedly connected to the top with an L-shaped plate (406), and the horizontal section of the L-shaped plate (406) is slidably connected to the scraper (301).

8. The centrifugal device for extracting ginsenosides according to claim 7, characterized in that: The adjustment mechanism (40) further comprises a bidirectional screw rod (403) rotatably connected to the mounting seat (405), the bidirectional screw rod (403) being threadedly connected to the two movable seats (401), and one end of the bidirectional screw rod (403) being fixedly connected to a knob (404).

9. The centrifugal device for extracting ginsenosides according to claim 2, characterized in that: The rotating mechanism (50) includes a circular ring (501) fixedly connected to the outside of the centrifuge body (10), a plurality of grooves (502) are provided on the outside of the circular ring (501), a rotating disk (503) is rotatably connected to the top of the base (201), a shifting rod (504) is fixedly connected to the side of the rotating disk (503), and the shifting rod (504) is engaged with the grooves (502).

10. The centrifugal device for extracting ginsenosides according to claim 9, characterized in that: The servo mechanism (60) includes a second transmission shaft (601) rotatably connected to the crossbar (203), the bottom of the second transmission shaft (601) is fixedly connected to the rotating shaft of the rotating disk (503), the top of the second transmission shaft (601) is fixedly connected to a second bevel gear (603), and the outside of the first transmission shaft (207) is also fixedly connected to a first bevel gear (602), and the first bevel gear (602) is meshed with the second bevel gear (603).

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