Sorting device for producing warm rose tea

Abstract

The invention relates to the technical field of tea leaf screening, and discloses a sorting device for producing warm rose tea, comprising: a vibrating screen machine, a screening zone of which is provided with a plurality of modular dredging-assisting screen mesh mechanisms for screening tea leaves and automatically dredging screen meshes; the communication-assisting screen mechanism comprises a screen plate, a rubber plate pad and a vibration-following air supply assembly, screen hole rubber rings are arranged on the rubber plate pad in an array mode, the rubber plate pad is laid on the screen plate, and one screen hole rubber ring is correspondingly inserted into a screen hole of each screen plate; an expansion air chamber is arranged in the sieve pore rubber ring and is connected with a vibration-following air supply assembly; the expansion air chamber is arranged in the sieve pore rubber ring, the vibration-following air supply assembly periodically and alternately injects air into the sieve pore rubber ring, the expansion air chamber is driven to alternately expand in the X-axis direction and the Y-axis direction, and the continuous fluctuation effect is formed at the sieve pores through alternate expansion.

Description

Technical Field

[0001] This invention relates to the field of tea sorting, and more specifically, to a sorting device for the production of rose warm tea. Background Technology

[0002] In the production of teas such as rose warm tea, sorting is one of the key steps. Its purpose is to separate teas of different sizes, shapes or qualities to ensure product quality and uniformity. Currently, the most commonly used tea sorting equipment is the vibrating screen.

[0003] Existing vibrating screens commonly experience screen clogging when working for extended periods or processing specific types of tea (such as rose warm tea, which may contain petals and other easily clogged materials). Once the screen clogging occurs, it not only significantly reduces screening efficiency and affects sorting accuracy, but also causes the production line to stop, requiring frequent manual cleaning, which increases production costs and labor intensity. In existing technologies, some attempts have been made to alleviate screen clogging through mechanical vibration or brushing, but these methods are often ineffective, and brushing may damage some fragile tea leaves. Therefore, we propose a sorting device for the production of rose warm tea. Summary of the Invention

[0004] This invention provides a sorting device for the production of rose warm tea, which solves the technical problem that related technologies use mechanical vibration or brushing to alleviate screen clogging, but these methods are often ineffective and brushing may damage some fragile tea leaves.

[0005] This invention provides a sorting device for the production of rose warm tea, comprising: a vibrating screen, wherein the screening section of the vibrating screen is provided with multiple modular screen-clearing mechanisms for screening tea leaves and automatically clearing the screens; The screen-passing mechanism includes a screen plate, a rubber pad, and a vibration-assisted air supply component. The rubber pad is arranged with screen hole rubber rings in an array. The rubber pad is laid on the screen plate, and a screen hole rubber ring is inserted into each screen hole of the screen plate. The screen hole rubber ring has an expansion chamber inside, which is connected to the vibration-assisted air supply component; The air supply component vibrates in sync with the screen plate, periodically injecting gas into the expansion chamber, driving the expansion chamber to expand alternately along the X and Y axes, forming a wave effect with a constant effective area of ​​the mesh. When tea leaves become clogged in the X-axis direction of the screen holes, the mechanical wave generated by the expansion in the Y-axis direction automatically removes the blockage, and the throughput of the screen holes remains stable.

[0006] Furthermore, the discharge end of the screening section of the vibrating screen is fixedly equipped with a primary discharge port, and a secondary zone is set below the screening section of the vibrating screen. A portion of the tea leaves that pass through the mesh of the screen plate falls into the secondary zone, while the tea leaves that do not pass through the mesh are collected at the primary discharge port.

[0007] Furthermore, mounting buckle holes are provided in the gaps between two adjacent mesh holes of the screen plate, and mounting buckle posts are fixedly provided in the gaps between two adjacent screen hole rubber rings on the lower wall of the rubber pad. Several mounting buckle posts correspond one-to-one with several mounting buckle holes, and the upper surface of the rubber pad is flush with the upper surface of the outer frame of the screen plate.

[0008] Furthermore, the expansion chamber consists of two longitudinal chambers and two transverse chambers. Each sieve ring has two longitudinal chambers and two transverse chambers, and the two longitudinal chambers and two transverse chambers are staggered.

[0009] Furthermore, the two longitudinal air chambers are interconnected, the two transverse air chambers are interconnected, and the longitudinal air chambers of several sieve-hole rubber rings are interconnected, as are the transverse air chambers of several sieve-hole rubber rings. The lower wall of the rubber pad is provided with an air supply network and air supply branches, which are divided into two groups to supply air to the longitudinal air chambers and transverse air chambers, respectively.

[0010] Furthermore, the vibration-assisted air supply assembly includes several sets of air supply chambers. The air supply chambers are fixed to the lower wall of the outer frame of the screen plate. A partition plate is fixedly installed at the center of the air supply chamber, dividing the air supply chamber into two spaces of the same size.

[0011] Furthermore, the upper and lower walls of the gas supply chamber are respectively fixedly equipped with a gas storage chamber 1 and a gas storage chamber 2. There are several gas storage chambers 1 and 2, and there is a one-to-one correspondence between the several gas storage chambers 1 and the several gas storage chambers 2.

[0012] Furthermore, the first gas storage chamber is equipped with a first gas storage bag, the second gas storage chamber is equipped with a second gas storage bag, both the first and second gas storage chambers are equipped with a return spring, and several first gas storage bags are interconnected, as are several second gas storage bags.

[0013] Furthermore, several guide pillars run through the center line of the partition plate, and each guide pillar corresponds to one of the gas storage chambers. The upper and lower ends of the guide pillars are respectively fixedly equipped with counterweight impact block two and counterweight impact block one. A connecting block column two is fixedly connected between two adjacent counterweight impact blocks one, and a connecting block column one is fixedly connected between two adjacent counterweight impact blocks two.

[0014] Furthermore, several sets of anti-vibration magnetic blocks are fixedly installed on the upper and lower walls of the partition plate. A main impact magnetic block two is fixedly installed on the side of the counterweight impact block two near the anti-vibration magnetic block, and a main impact magnetic block one is fixedly installed on the side of the counterweight impact block one near the anti-vibration magnetic block. Both the main impact magnetic block one and the main impact magnetic block two repel each other from the anti-vibration magnetic blocks.

[0015] The beneficial effects of this invention are as follows: This invention sets up an expansion chamber inside the sieve hole rubber ring, and injects gas into it periodically and alternately by a vibration-assisted air supply component. This drives the expansion chamber to expand alternately along the X-axis and Y-axis. This alternating expansion creates a continuous wave effect at the sieve hole, which can effectively vibrate, squeeze and remove tea particles that are blocking the sieve hole, realize automatic unblocking of the sieve, significantly improve sieving efficiency, reduce the frequency and labor intensity of manual cleaning, and can unblock the tea without damaging it. The alternating expansion design of the expansion chamber ensures that expansion occurs in the X-axis direction while contraction occurs in the Y-axis direction, and vice versa, thus maintaining a constant effective area of ​​the screen apertures overall. This means that even when clearing blockages, the throughput of the screen apertures will not fluctuate drastically, ensuring the continuity and stability of the screening process and improving sorting accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the screen plate structure of the present invention; Figure 3 This is a schematic diagram of the adhesive pad structure of the present invention; Figure 4 This is a partial cross-sectional view of the screen hole rubber ring structure of the present invention; Figure 5 This is the invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the internal structure of the sieve hole rubber ring of the present invention; Figure 7 This is a schematic diagram of the expansion chamber structure of the present invention; Figure 8 This is a schematic diagram of the longitudinal air chamber expansion structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the gas supply chamber of the present invention; Figure 10 This is a schematic diagram of the internal structure of the gas storage chamber of the present invention.

[0017] In the diagram: 11. Vibrating screen; 13. Primary discharge port; 14. Secondary zone; 2. Screen mesh clearing mechanism; 21. Screen plate; 22. Mounting buckle hole; 31. Rubber pad; 32. Screen hole rubber ring; 33. Mounting buckle column; 34. Expansion chamber; 35. Air supply branch pipe; 36. Air supply network; 341. Longitudinal air chamber; 342. Horizontal air chamber; 41. Air supply chamber; 42. Main air supply pipe; 43. Air storage chamber one; 44. Air storage chamber two; 45. Divider plate; 46. Anti-vibration magnetic block; 47. Guide column; 48. Counterweight impact block one; 49. Counterweight impact block two; 401. Connecting column one; 402. Connecting column two; 403. Air storage bag one; 404. Air storage bag two; 405. Main impact magnetic block one; 406. Main impact magnetic block two; 407. Return spring. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] like Figure 1 - Figure 10 As shown, a sorting device for producing rose warm tea includes: a vibrating screen 11, wherein the screening section of the vibrating screen 11 is provided with multiple modular screen-clearing mechanisms 2 for screening tea leaves and automatically clearing the screens; The screen-passing mechanism 2 includes a screen plate 21, a rubber pad 31, and a vibration-assisted air supply component. The rubber pad 31 is provided with an array of screen hole rubber rings 32. The rubber pad 31 is laid on the screen plate 21, and a screen hole rubber ring 32 is inserted into each screen hole of the screen plate 21. The screen ring 32 has an expansion chamber 34 inside, which is connected to the vibration-assisted air supply component. The air supply component vibrates in sync with the screen plate 21, periodically injecting gas into the expansion chamber 34, driving the expansion chamber 34 to expand alternately along the X and Y axes, forming a wave effect with a constant effective area of ​​the mesh. When tea leaves become blocked in the X-axis direction of the screen holes, the mechanical wave generated by the expansion in the Y-axis direction automatically removes the blockage, and the throughput of the screen holes remains stable.

[0020] The vibrating screen 11 has a primary discharge port 13 fixedly installed at the discharge end of the screening section. A secondary zone 14 is set below the screening section of the vibrating screen 11. A portion of the tea leaves that pass through the mesh of the screen plate 21 falls into the secondary zone 14, while the tea leaves that do not pass through the mesh gather at the primary discharge port 13.

[0021] The gap between two adjacent mesh holes of the screen plate 21 is provided with mounting buckle holes 22. The gap between two adjacent screen hole rubber rings 32 on the lower wall of the rubber pad 31 is fixedly provided with mounting buckle posts 33. Several mounting buckle posts 33 correspond one-to-one with several mounting buckle holes 22. The upper surface of the rubber pad 31 is flush with the upper surface of the outer frame of the screen plate 21.

[0022] The expansion chamber 34 consists of two longitudinal chambers 341 and two transverse chambers 342. Each sieve ring 32 is provided with two longitudinal chambers 341 and two transverse chambers 342, and the two longitudinal chambers 341 and two transverse chambers 342 are staggered.

[0023] Two longitudinal air chambers 341 are interconnected, two transverse air chambers 342 are interconnected, and several longitudinal air chambers 341 of all screen hole rubber rings 32 are interconnected, as are several transverse air chambers 342 of all screen hole rubber rings 32. The lower wall of the rubber pad 31 is provided with an air supply network 36 and an air supply branch pipe 35, which are divided into two groups to supply air to the longitudinal air chambers 341 and the transverse air chambers 342, respectively.

[0024] The vibration-assisted air supply assembly includes several sets of air supply chambers 41. The air supply chambers 41 are fixed to the lower wall of the outer frame of the screen plate 21. A partition plate 45 is fixedly installed at the center of the air supply chamber 41, dividing the air supply chamber 41 into two spaces of the same size.

[0025] The upper and lower walls of the gas supply chamber 41 are respectively fixedly provided with a first gas storage chamber 43 and a second gas storage chamber 44. There are several of each of the first gas storage chamber 43 and the second gas storage chamber 44, and there is a one-to-one correspondence between the several first gas storage chambers 43 and the several second gas storage chambers 44.

[0026] The first air chamber 43 is equipped with an air bladder 403, and the second air chamber 44 is equipped with an air bladder 404. Both the first air chamber 43 and the second air chamber 44 are equipped with a return spring 407. Several air bladders 403 are interconnected, and several air bladders 404 are interconnected.

[0027] Several guide posts 47 pass through the center line of the partition plate 45. The guide posts 47 correspond one-to-one with the first gas storage chamber 43 and the second gas storage chamber 44. The upper and lower ends of the guide posts 47 are respectively fixedly provided with counterweight impact block 2 49 and counterweight impact block 1 48. A connecting block 2 402 is fixedly connected between two adjacent counterweight impact blocks 1 48, and a connecting block 1 401 is fixedly connected between two adjacent counterweight impact blocks 2 49.

[0028] Zero dead zone unblocking: The fully interconnected mesh air chamber ensures that the edge screen holes and the central area are unblocked simultaneously.

[0029] Several sets of anti-vibration magnetic blocks 46 are fixedly installed on the upper and lower walls of the partition plate 45. A main impact magnetic block 406 is fixedly installed on the side of the counterweight impact block 49 near the anti-vibration magnetic block 46. A main impact magnetic block 405 is fixedly installed on the side of the counterweight impact block 48 near the anti-vibration magnetic block 46. Both the main impact magnetic block 405 and the main impact magnetic block 406 repel each other from the anti-vibration magnetic blocks 46.

[0030] In use, the staff first lays the rubber pad 31 that is compatible with the screen plate 21 on the screen plate 21, so that all the screen hole rubber rings 32 are inserted into the screen holes of the screen plate 21. At the same time, several mounting pins 33 are aligned with several mounting pin holes 22, and the mounting pins 33 are hammered into the mounting pin holes 22 to fix the rubber pad 31. This allows the rubber pad 31 to vibrate in sync with the screen plate 21, and the tea leaves ripple on the rubber pad 31. The flexible rubber pad 31 can protect the tea leaves. The tea leaves to be screened fall onto the screen plate 21 via the conveyor belt. The screen plate 21 is driven to vibrate at high frequency by the vibrating screen machine 11. Under the high frequency vibration, the tea leaves smaller than the screen mesh size pass through the screen mesh and fall into the secondary zone 14, while the tea leaves larger than the screen mesh size move to the primary discharge port 13 under vibration and are finally collected.

[0031] When the screen plate 21 vibrates at high frequency, it drives the air supply chamber 41 to vibrate at the same frequency. Under the vibration, several sets of counterweight impact blocks 48 and 49 move up and down. The guide column 47 is slidably connected to the partition plate 45. When the counterweight impact block 49 impacts upward, it impacts the air storage bladder 403 in the air storage chamber 43, squeezing out the gas in the air storage bladder 403. When the counterweight impact block 48 strikes downwards, it impacts the gas storage bladder 404 in the gas storage chamber 44, causing the gas in the gas storage bladder 404 to be expelled. The counterweight impact block 1 48 and the counterweight impact block 2 49 alternately impact each other, and several counterweight impact blocks 1 48 are connected together by connecting block 2 402, and several counterweight impact blocks 2 49 are connected together by connecting block 1 401, so that several counterweight impact blocks 1 48 impact and compress several air storage bags 2 404 at the same time, and several counterweight impact blocks 2 49 impact and compress several air storage bags 1 403 at the same time. Several air-storage bladders 403 are interconnected, and several air-storage bladders 404 are interconnected. When the two are alternately compressed, the gas is supplied to the air supply network 36 and the air supply branch pipe 35 through a set of air supply main pipes 42. The air supply network 36 and the air supply branch pipe 35 are designed with two sets, one for supplying air to the longitudinal air chamber 341 and the other for supplying air to the transverse air chamber 342. The transverse air chamber 342 and the longitudinal air chamber 341 are supplied alternately, causing them to expand alternately. When tea leaves block the screen holes in the X-axis direction, the mechanical wave generated by the expansion in the Y-axis direction automatically removes the blockage, and the screen hole throughput remains stable. When airbag 403 and airbag 404 lose their impact force, they are reset by the return spring 407, and the expansion gas in the corresponding longitudinal air chamber 341 and transverse air chamber 342 is retracted, so that the two can expand alternately. When the counterweight impact block 48 and the counterweight impact block 49 collide from above and below, the repulsive force between the main impact magnetic block 405 and the main impact magnetic block 406 and the anti-vibration magnetic block 46 prevents them from contacting each other and reduces the collision. Furthermore, during the repulsion, the impact force on the air storage bag 403 or the air storage bag 404 can be increased.

[0032] Anti-clogging and self-cleaning capabilities: The screen hole rubber ring 32 is equipped with a longitudinal air chamber 341 and a transverse air chamber 342. Gas is alternately injected through the vibration-assisted air supply component, causing mechanical waves to form in the X / Y axis directions of the screen holes. When the X-axis direction is blocked, the vibration generated by the expansion in the Y-axis direction can automatically clear the blockage, and the effective area of ​​the screen holes remains constant, ensuring stable throughput.

[0033] Improved grading accuracy: The vibrating screen 11 has a primary discharge port 13 and a secondary zone 14. Large tea particles that have not passed through the screen move along the screen surface to the primary discharge port 13, while small tea particles pass through the screen and fall to the secondary zone 14, thus achieving clear grading and avoiding mixing.

[0034] Ease of installation and stability: The rubber pad 31 is fixed to the screen plate 21 by the mounting buckle 33 and the mounting buckle hole 22. The upper surface is flush, which avoids material accumulation caused by uneven screen surface. At the same time, the rubber pad 31 vibrates in the same frequency as the screen, reducing relative sliding wear.

[0035] Energy-saving and self-supplying gas system: The counterweight impact block 1 48 and counterweight impact block 2 49 in the gas supply chamber 41 impact the air storage bladder 1 403 and air storage bladder 2 404 with the vibration of the screen, converting mechanical energy into gas supply, eliminating the need for an external gas source and reducing energy consumption.

[0036] Extending equipment life: The main impact magnetic block 405 and the main impact magnetic block 406 repel each other with the anti-vibration magnetic block 46, reducing the direct collision between the counterweight and the gas storage chamber, reducing mechanical impact, and at the same time, the magnetic force enhances the impact force and improves the gas supply efficiency.

[0037] Work steps: Install rubber pad 31: Lay the rubber pad 31 with the screen hole rubber ring 32 on the screen plate 21, insert the mounting pin 33 into the mounting pin hole 22 of the screen plate 21 and hammer it to fix it, so as to ensure that the rubber pad 31 vibrates at the same frequency as the screen plate 21 and the surface is flush.

[0038] Start the vibrating screen 11: The vibrating screen 11 drives the screen plate 21 to vibrate at high frequency, and the tea leaves to be screened are evenly spread on the surface of the rubber pad 31.

[0039] Vibration-driven air supply: The vibration of the screen drives the counterweight impact block 1 48 and counterweight impact block 2 49 in the air supply chamber 41 to move up and down, alternately impacting the air storage bladder 1 403 and the air storage bladder 2 404, and supplying the gas to the screen hole rubber ring 32 through the air supply pipeline 36 in two groups.

[0040] Self-unblocking of sieve holes: The longitudinal air chamber 341 and the transverse air chamber 342 expand alternately, generating mechanical waves in the X / Y axis direction, which removes blockages and maintains a constant effective area of ​​the sieve holes. Small tea particles pass through the sieve holes and fall into the secondary zone 14, while large particles move to the primary discharge port 13.

[0041] Graded collection: Secondary zone 14 collects sieved tea leaves, and primary outlet 13 collects unsieved tea leaves, thus completing the sorting process.

[0042] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A sorting device for producing rose warm tea, characterized in that, include: Vibrating screen (11), wherein the screening section of the vibrating screen (11) is provided with multiple modular screen-clearing mechanisms (2) for screening tea leaves and automatically clearing the screen; The screen-passing mechanism (2) includes a screen plate (21), a rubber pad (31) and a vibration-assisted air supply component. The rubber pad (31) is provided with an array of screen hole rubber rings (32). The rubber pad (31) is laid on the screen plate (21), and a screen hole rubber ring (32) is inserted into each screen hole of the screen plate (21). The screen ring (32) has an expansion chamber (34) inside, which is connected to the vibration-assisted air supply assembly; The air supply component vibrates in sync with the screen plate (21) and periodically injects gas into the expansion chamber (34), driving the expansion chamber (34) to expand alternately along the X-axis and Y-axis, forming a wave effect with a constant effective area of ​​the mesh. When tea leaves block the screen holes in the X-axis direction, the mechanical wave generated by the expansion in the Y-axis direction automatically removes the blockage, and the screen hole throughput remains stable.

2. The sorting device for producing rose warm tea according to claim 1, characterized in that, The vibrating screen (11) has a primary discharge port (13) fixedly installed at the discharge end of the screening section. A secondary zone (14) is set below the screening section of the vibrating screen (11). A portion of the tea leaves that pass through the mesh of the screen plate (21) falls into the secondary zone (14), while the tea leaves that do not pass through the mesh gather at the primary discharge port (13).

3. The sorting device for producing rose warm tea according to claim 1, characterized in that, The gap between two adjacent mesh holes of the screen plate (21) is provided with mounting buckle holes (22), and the gap between two adjacent screen hole rubber rings (32) on the lower wall of the rubber pad (31) is fixedly provided with mounting buckle posts (33). Several mounting buckle posts (33) correspond one-to-one with several mounting buckle holes (22), and the upper surface of the rubber pad (31) is flush with the upper surface of the outer frame of the screen plate (21).

4. The sorting device for producing rose warm tea according to claim 1, characterized in that, The expansion chamber (34) consists of two longitudinal chambers (341) and two transverse chambers (342). Each sieve ring (32) is provided with two longitudinal chambers (341) and two transverse chambers (342), and the two longitudinal chambers (341) and two transverse chambers (342) are staggered.

5. A sorting device for producing rose warm tea according to claim 4, characterized in that, The two longitudinal air chambers (341) are interconnected, the two transverse air chambers (342) are interconnected, the longitudinal air chambers (341) of several sieve hole rubber rings (32) are interconnected, and the transverse air chambers (342) of several sieve hole rubber rings (32) are interconnected. The lower wall of the rubber pad (31) is provided with an air supply network (36) and an air supply branch pipe (35), and the air supply network (36) and the air supply branch pipe (35) are divided into two groups, which supply air to the longitudinal air chambers (341) and the transverse air chambers (342) respectively.

6. A sorting device for producing rose warm tea according to claim 1, characterized in that, The vibration-assisted air supply assembly includes several sets of air supply chambers (41). The air supply chambers (41) are fixed to the lower wall of the outer frame of the screen plate (21). A partition plate (45) is fixedly installed at the center of the interior of the air supply chamber (41). The partition plate (45) divides the air supply chamber (41) into two spaces of the same size.

7. A sorting device for producing rose warm tea according to claim 6, characterized in that, The upper and lower walls of the gas supply chamber (41) are respectively fixedly provided with a first gas storage chamber (43) and a second gas storage chamber (44). There are several first gas storage chambers (43) and several second gas storage chambers (44), and there is a one-to-one correspondence between the several first gas storage chambers (43) and the several second gas storage chambers (44).

8. A sorting device for producing rose warm tea according to claim 7, characterized in that, The first air chamber (43) is provided with an air storage bag (403) inside, and the second air chamber (44) is provided with an air storage bag (404) inside. Both the first air chamber (43) and the second air chamber (44) are provided with a return spring (407). Several air storage bags (403) are interconnected, and several air storage bags (404) are interconnected.

9. A sorting device for producing rose warm tea according to claim 7, characterized in that, Several guide posts (47) are passed through the center line of the partition plate (45). The several guide posts (47) correspond one-to-one with the first gas storage chamber (43) and the second gas storage chamber (44). The upper and lower ends of the guide posts (47) are respectively fixedly provided with counterweight impact block two (49) and counterweight impact block one (48). A connecting block column two (402) is fixedly connected between two adjacent counterweight impact blocks one (48), and a connecting block column one (401) is fixedly connected between two adjacent counterweight impact blocks two (49).

10. A sorting device for producing rose warm tea according to claim 9, characterized in that, Several sets of anti-vibration magnetic blocks (46) are fixedly arranged on the upper and lower walls of the partition plate (45). The second counterweight impact block (49) is fixedly arranged with a second main impact magnetic block (406) on the side close to the anti-vibration magnetic block (46). The first counterweight impact block (48) is fixedly arranged with a first main impact magnetic block (405) on the side close to the anti-vibration magnetic block (46). Both the first main impact magnetic block (405) and the second main impact magnetic block (406) repel each other from the anti-vibration magnetic block (46).

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