Centrifugal machine capable of efficiently cleaning filter cakes

Abstract

The utility model relates to the technical field of centrifugal machines, and discloses a centrifugal machine capable of efficiently cleaning filter cakes, which comprises a shell, the inner wall of the shell is rotatably connected with a rotary drum, the bottom surface of the rotary drum is clamped with a fixed rod, the top surface of the fixed rod is fixedly connected with a driving bevel gear, and the outer wall of the driving bevel gear is meshed with a transition bevel gear. The middle of the transition bevel gear is rotationally connected with a connecting piece, the bottom of the connecting piece is rotationally connected with the outer wall of the fixing rod, the top of the connecting piece is fixedly connected with a rotating rod, and the bottom face of the rotating rod is fixedly connected with a driven bevel gear. According to the utility model, the motor drives the rotating drum and the fixed rod to rotate, the driving bevel gear is meshed with the transition bevel gear to drive the driven bevel gear to rotate reversely, the rotating rod relatively rotates in the rotating drum, and the scraper is tightly attached to the inner wall under the action of centrifugal force to scrape residues, so that filter residues and filter cakes are quickly removed.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge technical field especially relates to a centrifuge of high -efficient filter cake cleaning. BACKGROUND

[0002] In the process of modern industrial production, in order to ensure that material can be effectively separated, widely used various different types of mechanical equipment, these devices are specially designed to realize the high -efficient separation work between solid -liquid two -phase medium, centrifuge as a very common and common separation device, plays a vital role in numerous industrial fields, centrifuge passes through the strong centrifugal force field generated by high -speed rotation, can make the different components in mixture according to their respective density difference distribution, thereby effectively realizing the concentration and clarification of material, reaches the expected separation effect.

[0003] Through the retrieval, china patent publication number: CN206853919U, discloses a vertical centrifuge, including frame, setting on the frame drum, drum transmission assembly, the drum is equipped with filter bag, the drum cover is equipped with shell, its characterized in that: the vertical setting of the drum, the top end of the drum is open, the top end of the drum is open and is equipped with the liquid baffle, the liquid baffle is sealed and locked on the drum through automatic locking mechanism, the automatic locking mechanism is connected on the shell.The utility model pushes the vertical centrifuge, can prolong the service life of transmission assembly middle bearing, prolongs the service life of sealing strip, reduces the equipment use cost, reduces the equipment occupied area, however the above structure does not consider the problem that residual filter residue and filter cake remaining on the basket are difficult to completely remove, this not only influences the quality and efficiency of subsequent processing procedure, and increases maintenance cost and time long. UTILITY MODEL CONTENTS

[0004] In order to make up for the above insufficient, the utility model provides a centrifuge of high -efficient filter cake cleaning, aims at improving the problem that residual filter residue and filter cake remaining on the basket are difficult to completely remove in prior art, this not only influences the quality and efficiency of subsequent processing procedure, and increases maintenance cost and time long.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a centrifuge of high -efficient filter cake cleaning, including the shell, the inner wall rotation of shell is connected with the rotary drum, the bottom surface of rotary drum is clamped with fixed link, the top surface fixed connection of fixed link has driving bevel gear, the outer wall of driving bevel gear is connected with transition bevel gear, the middle part rotation of transition bevel gear is connected with connecting piece, the bottom of connecting piece is rotatably connected with the outer wall of fixed link, the top of connecting piece is fixedly connected with rotating rod, the bottom surface fixed connection of rotating rod has driven bevel gear, the outer wall of driven bevel gear is rotatably connected with the outer wall of transition bevel gear, the outer wall of rotating rod is fixedly connected with a plurality of sleeves, the inner wall sliding connection of sleeve has telescopic link, the other end fixed connection of telescopic link has scraper, the top of rotary drum is provided with clamping mechanism, and the clamping mechanism is used for clamping fixed link transmission power.

[0006] Through the above technical scheme: the shell provides safe, stable running environment for internal components, the inner wall of shell can keep stable in the high-speed rotating process through high-precision bearing and rotary drum, reduces vibration and noise, thereby improving separation efficiency and service life of equipment, the rotary drum bottom surface is closely matched with the fixed link, the top surface of fixed link is fixedly connected with driving bevel gear, when driving bevel gear starts to rotate and is engaged with transition bevel gear, the middle part of transition bevel gear is rotatably connected with connecting piece, the bottom of connecting piece is connected with the outer wall of fixed link, so that transition bevel gear can rapidly and accurately change power transmission direction after receiving the power transmission of driving bevel gear, the top of connecting piece is fixedly connected with rotating rod, the bottom surface fixed connection of rotating rod driven bevel gear is rotatably connected with transition bevel gear, along the outer wall of rotating rod, a plurality of sleeves are uniformly and firmly fixedly connected, the inner wall of sleeve is rotatably connected with telescopic link, the other end of telescopic link is fixedly connected with scraper, and the scraper can easily scrape the filter cake attached to the inner wall of rotary drum.

[0007] Further description of the above technical scheme:

[0008] The clamping mechanism includes a sleeve ring, the bottom surface of the sleeve ring is fixedly connected with the top surface of the rotary drum, the inner wall of the sleeve ring is fixedly connected with a circular key, the top surface of the circular key is fixedly connected with a star key, the top surface of the shell is rotatably connected with a top cover, the bottom surface of the top cover is fixedly connected with a positioning block in the middle, and the top surface of the rotating rod is fixedly connected with a positioning key.

[0009] Through the technical scheme, the sleeve ring is tightly attached to the top surface of the rotating drum, so that displacement deviation does not occur in the subsequent operation process, laying a solid foundation for stable operation of the mechanism, the inner wall of the sleeve ring is fixedly connected with the circular key, the top surface of the circular key is fixedly connected with the star-shaped key, the star-shaped key can be accurately embedded into the corresponding clamping groove to transmit power, the top surface of the shell is rotatably connected with the top cover, so that the top cover is conveniently opened, the bottom surface of the top cover is fixedly connected with the positioning block in the middle, the top surface of the rotating rod is fixedly connected with the positioning key, and the positioning key is matched with the positioning block; when the rotating rod rotates, the positioning key moves along the predetermined track under the guidance and constraint of the positioning block, so that the linkage of the entire mechanical device is more smooth and efficient.

[0010] As a further description of the above technical scheme:

[0011] The top surface of the top cover is fixedly connected with an observation window in the middle, and a handle is fixedly connected to the top surface of the top cover near the edge.

[0012] Through the technical scheme, the top surface of the top cover is fixedly connected with an observation window in the middle, which can provide a clear internal view and facilitate checking the running status of the device at any time, and the handle is fixed to the top surface of the top cover near the edge, so that the device can be easily opened.

[0013] As a further description of the above technical scheme:

[0014] The outer wall of the top cover is fixedly connected with a clamping hook, and the outer wall of the shell is fixedly connected with a buckle at the top.

[0015] Through the technical scheme, the clamping hooks are arranged in order and firmly welded on the outer wall of the top cover, the clamping hooks are matched with the buckles fixedly connected to the top of the outer wall of the shell, and a locking mechanism is formed; when the top cover is closed with the shell, the clamping hooks can be accurately clamped into the buckles, tightly attached, and effectively prevent the top cover from being accidentally opened during the operation of the device, thereby ensuring the stability of the internal operating environment of the device.

[0016] As a further description of the above technical scheme:

[0017] The bottom surface of the shell is fixedly connected with an L-shaped plate, the top surface of the L-shaped plate is fixedly connected with a motor, and the output end of the motor penetrates through the bottom surface of the shell and is fixedly connected with the middle of the bottom surface of the rotating drum.

[0018] Through the technical scheme, the bottom surface of the shell is fixedly connected with the stable L-shaped plate, the L-shaped plate supports the motor above, the motor is the power core of the device, the output end of the motor penetrates through the bottom surface of the shell and is fixedly connected with the middle of the bottom surface of the rotating drum, and the motor can drive the rotating drum to rotate at high speed and stably, thereby driving a series of transmission components associated therewith to operate.

[0019] As a further description of the above technical scheme:

[0020] The outer wall of the shell is fixedly connected with a controller, and the top surface of the rotating drum is fixedly connected with a splash-proof ring.

[0021] Through the above technical scheme: the outer wall of the shell is fixedly connected with the controller, the controller can accurately control various operating parameters of the equipment, and the top surface of the rotating drum is fixedly connected with a splash-proof ring, which is annular and can effectively block the outward spatter of the material.

[0022] Further description of the above technical scheme:

[0023] The bottom surface of the shell is fixedly connected with a plurality of supporting legs, and the outer wall of the connecting piece is provided with a protective shell.

[0024] Through the above technical scheme: the bottom surface of the shell is uniformly distributed and fixedly connected with a plurality of supporting legs, the supporting legs ensure the stability of the equipment when placed, and the outer wall of the connecting piece is tightly sleeved with a protective shell which protects the internal mechanical parts.

[0025] Further description of the above technical scheme:

[0026] One end of the telescopic rod is fixedly connected with a spring, and the other end of the spring is fixedly connected with the inner wall of the sleeve.

[0027] Through the above technical scheme: one end of the telescopic rod is fixedly connected with a spring, and the other end of the spring is fixedly connected with the inner wall of the sleeve.

[0028] Further description of the above technical scheme:

[0029] The utility model has the advantages of the following beneficial effects:

[0030] 1、 the utility model discloses when needing to clean the inner wall of the rotating drum, the motor is started, and the motor drives the rotating drum to rotate, and the fixed rod at the bottom of the rotating drum also rotates, and the driving bevel gear at the top of the fixed rod is engaged with the transition bevel gear, and the transition bevel gear also rotates, and the transition bevel gear also drives the driven bevel gear to rotate, and the transition bevel gear is passed, and the rotation direction of the driving bevel gear and the driven bevel gear is opposite, realizes that the rotating rod rotates relatively the rotating drum in the rotating drum, when the rotating rod rotates, telescopic rod slides in the sleeve due to the action of centrifugal force, makes the scraper close to the inner wall of the rotating drum, and the scraper removes the residual filter residue and filter cake on the inner wall of the rotating drum, realizes the quick removal of residual filter residue and filter cake.

[0031] 2. The utility model discloses a top of fixed link is provided with the card slot that is matched with the shape of star key and round key, and the star key and round key are inserted into the recess of fixed link bottom surface in alignment, because the star of star key makes the rotating force of rotary drum can be well transmitted to fixed link, the inner wall of sleeve ring and the outer wall of fixed link are attached, make the installation of fixed link more stable, cover with top cover again, make the positioning key insert into the positioning block, realize the fixation of rotating rod, make scraping more stable and smooth. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A front side perspective view of the centrifuge for efficiently cleaning filter cake is provided in the utility model;

[0033] Figure 2 A partial structure split drawing of the centrifuge drum for efficiently cleaning filter cake is provided in the utility model;

[0034] Figure 3 A partial structure drawing of the transition bevel gear of the centrifuge for efficiently cleaning filter cake is provided in the utility model;

[0035] Figure 4 A partial structure display drawing of the sleeve of the centrifuge for efficiently cleaning filter cake is provided in the utility model;

[0036] Figure 5 A partial structure display drawing of the star key of the centrifuge for efficiently cleaning filter cake is provided in the utility model;

[0037] Figure 6 A partial structure schematic view of the positioning block of the centrifuge for efficiently cleaning filter cake is provided in the utility model.

[0038] Legend:

[0039] 1, shell, 2, clamping mechanism, 201, sleeve ring, 202, round key, 203, star key, 204, top cover, 205, positioning key, 206, positioning block, 3, rotary drum, 4, fixed link, 5, driving bevel gear, 6, connecting piece, 7, transition bevel gear, 8, driven bevel gear, 9, rotating rod, 10, sleeve, 11, telescopic rod, 12, scraper, 13, L-shaped plate, 14, motor, 15, support leg, 16, observation window, 17, handle, 18, controller, 19, buckle, 20, protective shell, 21, splash ring, 22, spring, 23, clasp. DETAILED DESCRIPTION

[0040] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0041] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 An embodiment provided by the present application: a centrifuge for efficiently cleaning filter cake, comprising a shell 1, a rotating drum 3 is rotatably connected to the inner wall of the shell 1, a fixed rod 4 is clamped to the bottom surface of the rotating drum 3, a driving bevel gear 5 is fixedly connected to the top surface of the fixed rod 4, a transition bevel gear 7 is meshingly connected to the outer wall of the driving bevel gear 5, a connecting piece 6 is rotatably connected to the middle part of the transition bevel gear 7, the bottom of the connecting piece 6 is rotatably connected to the outer wall of the fixed rod 4, a rotating rod 9 is fixedly connected to the top of the connecting piece 6, a driven bevel gear 8 is fixedly connected to the bottom surface of the rotating rod 9, the outer wall of the driven bevel gear 8 is meshingly connected to the outer wall of the transition bevel gear 7, a plurality of sleeves 10 are fixedly connected to the outer wall of the rotating rod 9, a telescopic rod 11 is slidingly connected to the inner wall of the sleeve 10, a scraper 12 is fixedly connected to the other end of the telescopic rod 11, a clamping mechanism 2 is arranged on the top surface of the rotating drum 3, and the clamping mechanism 2 is used for clamping the fixed rod 4 to transmit power;

[0042] Specifically, the shell 1 provides a safe and stable operating environment for the internal components, the inner wall of the shell 1 is rotatably connected to the rotating drum 3 through high-precision bearings, ensuring that the rotating drum 3 can remain stable during high-speed rotation, reducing vibration and noise, thereby improving separation efficiency and service life of the equipment, the bottom surface of the rotating drum 3 is tightly matched with the fixed rod 4, the top surface of the fixed rod 4 is fixedly connected with the driving bevel gear 5, when the driving bevel gear 5 starts to rotate, it is meshed with the transition bevel gear 7, the middle part of the transition bevel gear 7 is rotatably connected with the connecting piece 6, the bottom of the connecting piece 6 is connected with the outer wall of the fixed rod 4, so that the transition bevel gear 7 can quickly and accurately change the power transmission direction after receiving the power transmitted by the driving bevel gear 5, the rotating rod 9 is fixedly connected to the top of the connecting piece 6, the driven bevel gear 8 fixedly connected to the bottom surface of the rotating rod 9 forms a meshing relationship with the transition bevel gear 7, along the outer wall of the rotating rod 9, a plurality of sleeves 10 are uniformly and firmly fixedly connected, the inner wall of the sleeve 10 is slidingly connected with the telescopic rod 11, the other end of the telescopic rod 11 is fixedly connected with the scraper 12, and the scraper 12 can easily scrape off the filter cake attached to the inner wall of the rotating drum 3.

[0043] Please refer to the accompanying drawings Figure 5 - the accompanying drawings Figure 6The engaging mechanism 2 comprises a sleeve ring 201, the bottom surface of the sleeve ring 201 is fixedly connected with the top surface of the rotating drum 3, the inner wall of the sleeve ring 201 is fixedly connected with a circular key 202, the top surface of the circular key 202 is fixedly connected with a star-shaped key 203, the top surface of the shell 1 is rotationally connected with a top cover 204, the bottom surface of the top cover 204 is fixedly connected with a positioning block 206 in the middle, and the top surface of the rotating rod 9 is fixedly connected with a positioning key 205;

[0044] Specifically, the sleeve ring 201 is closely attached to the top surface of the rotating drum 3, so that displacement deviation does not occur in the subsequent operation process, laying a solid foundation for stable operation of the mechanism, the circular key 202 fixedly connected with the inner wall of the sleeve ring 201, and the star-shaped key 203 fixedly connected with the top surface of the circular key 202 can be accurately embedded into the corresponding clamping groove to transmit power, the top surface of the shell 1 is rotationally connected with the top cover 204, so that the top cover 204 can be easily opened, the bottom surface of the top cover 204 is fixedly connected with the positioning block 206 in the middle, and the top surface of the rotating rod 9 is fixedly connected with the positioning key 205, which cooperates with the positioning block 206, so that when the rotating rod 9 rotates, the positioning key 205 can move along the predetermined track under the guidance and constraint of the positioning block 206, so that the linkage of the entire mechanical device is more smooth and efficient.

[0045] Please refer to the accompanying drawings Figure 1 The accompanying drawings Figure 3 The top surface of the top cover 204 is fixedly connected with an observation window 16 in the middle, the top surface of the top cover 204 is fixedly connected with a handle 17 near the edge, the outer wall of the top cover 204 is fixedly connected with a clamping hook 23, the outer wall top of the shell 1 is fixedly connected with a buckle 19, the bottom surface of the shell 1 is fixedly connected with an L-shaped plate 13, the top surface of the L-shaped plate 13 is fixedly connected with a motor 14, and the output end of the motor 14 penetrates through the bottom surface of the shell 1 and is fixedly connected with the bottom surface of the rotating drum 3 in the middle;

[0046] Specifically, the top surface of the top cover 204 is fixedly connected with an observation window 16 in the middle, which can provide a clear internal view and facilitate the operator to check the running status of the equipment at any time, the top surface of the top cover 204 is fixedly connected with a handle 17 near the edge, which ensures that the operator can easily exert force and operate conveniently when opening the equipment, the outer wall of the top cover 204 has a plurality of clamping hooks 23 arranged in order and welded firmly, the clamping hooks 23 cooperate with the buckle 19 fixedly connected with the outer wall top of the shell 1 to form a locking mechanism, when the top cover 204 is closed with the shell 1, the clamping hooks 23 can be accurately clamped into the buckle 19, closely attached, effectively preventing the top cover 204 from being accidentally opened during the operation of the equipment, and ensuring the stability of the internal operating environment of the equipment, the bottom surface of the shell 1 is fixedly connected with the L-shaped plate 13 which is stable in structure, the L-shaped plate 13 supports the motor 14 above, the motor 14 is the power core of the equipment, the output end of the motor 14 penetrates through the bottom surface of the shell 1 and is fixedly connected with the bottom surface of the rotating drum 3 in the middle, and the motor 14 can drive the rotating drum 3 to rotate at high speed and stably, thereby driving a series of transmission components associated therewith to operate.

[0047] Please see the appendix Figure 2 - Appendix Figure 4 The outer wall of the outer casing 1 is fixedly connected to the controller 18, the top surface of the rotating drum 3 is fixedly connected to the splash ring 21, the bottom surface of the outer casing 1 is fixedly connected to multiple support legs 15, the outer wall of the connector 6 is provided with a protective shell 20, one end of the telescopic rod 11 is fixedly connected to a spring 22, and the other end of the spring 22 is fixedly connected to the inner wall of the sleeve 10.

[0048] Specifically, the outer wall of the outer casing 1 is fixedly connected to the controller 18, which can accurately control various operating parameters of the equipment. The top surface of the rotating drum 3 is firmly fixedly connected to a splash guard 21. The splash guard 21 is annular and can effectively prevent material from splashing outward. Multiple support legs 15 are evenly distributed and fixedly connected to the bottom surface of the outer casing 1. The support legs 15 ensure the stability of the equipment when placed. A protective shell 20 is tightly fitted on the outer wall of the connector 6. The protective shell 20 protects the internal mechanical parts. One end of the telescopic rod 11 is fixedly connected to a spring 22, and the other end of the spring 22 is fixedly connected to the inner wall of the sleeve 10. The spring 22, with its own elastic properties, drives the telescopic rod 11 to extend and retract flexibly within the sleeve 10, so that the scraper 12 returns to its original position.

[0049] Working principle: When it is necessary to clean the inner wall of the rotating drum 3, the motor 14 is started. The motor 14 drives the rotating drum 3 to rotate, and the fixed rod 4 at the bottom of the rotating drum 3 also rotates. The active bevel gear 5 at the top of the fixed rod 4 meshes with the transition bevel gear 7, and the transition bevel gear 7 also rotates. The transition bevel gear 7 then drives the driven bevel gear 8 to rotate. Through the transmission of the transition bevel gear 7, the rotation directions of the active bevel gear 5 and the driven bevel gear 8 are opposite, so that the rotating rod 9 rotates relative to the rotating drum 3 inside the rotating drum 3. When the rotating rod 9 rotates, due to the centrifugal force, the telescopic rod 11 slides in the sleeve 10, so that the scraper 12 is in close contact with the inner wall of the rotating drum 3. The scraper 12 scrapes away the residual filter residue and filter cake on the inner wall of the rotating drum 3, so as to quickly remove the residual filter residue and filter cake.

[0050] The top of the fixing rod 4 is provided with a slot that matches the shape of the star key 203 and the circular key 202. The star key 203 and the circular key 202 are aligned with the groove on the bottom surface of the fixing rod 4 and inserted. Due to the star shape of the star key 203, the rotational force of the rotating drum 3 can be well transmitted to the fixing rod 4. The inner wall of the collar 201 fits against the outer wall of the fixing rod 4, making the installation of the fixing rod 4 more stable. Then, the top cover 204 is put on, so that the positioning key 205 is inserted into the positioning block 206 to fix the rotating rod 9, making the scraping more stable and smooth.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high efficiency cleaner centrifuge of filter cake comprising a casing (1), characterized in that: The inner wall of the shell (1) is rotationally connected with a rotating drum (3), the bottom surface of the rotating drum (3) is clamped with a fixed rod (4), the top surface of the fixed rod (4) is fixedly connected with a driving bevel gear (5), the outer wall of the driving bevel gear (5) is meshedly connected with a transition bevel gear (7), the middle part of the transition bevel gear (7) is rotationally connected with a connecting piece (6), the bottom of the connecting piece (6) is rotationally connected with the outer wall of the fixed rod (4), the top of the connecting piece (6) is fixedly connected with a rotating rod (9), the bottom surface of the rotating rod (9) is fixedly connected with a driven bevel gear (8), the outer wall of the driven bevel gear (8) is meshedly connected with the outer wall of the transition bevel gear (7), the outer wall of the rotating rod (9) is fixedly connected with a plurality of sleeves (10), the inner wall of the sleeve (10) is slidingly connected with a telescopic rod (11), the other end of the telescopic rod (11) is fixedly connected with a scraper (12), the top surface of the rotating drum (3) is provided with a clamping mechanism (2), and the clamping mechanism (2) is used for clamping the fixed rod (4) to transmit power.

2. A centrifuge for efficiently cleaning filter cake according to claim 1, characterized in that: The clamping mechanism (2) comprises a sleeve ring (201), the bottom surface of the sleeve ring (201) is fixedly connected with the top surface of the rotating drum (3), the inner wall of the sleeve ring (201) is fixedly connected with a circular key (202), the top surface of the circular key (202) is fixedly connected with a star key (203), the top surface of the shell (1) is rotationally connected with a top cover (204), the bottom surface of the top cover (204) is fixedly connected with a positioning block (206) in the middle, and the top surface of the rotating rod (9) is fixedly connected with a positioning key (205).

3. A centrifuge for efficiently cleaning filter cake according to claim 2, characterized in that: The top surface of the top cover (204) is fixedly connected with an observation window (16), and the top surface of the top cover (204) is fixedly connected with a handle (17) near the edge.

4. The centrifuge of claim 2, wherein: The outer wall of the top cover (204) is fixedly connected with a clamping hook (23), and the outer wall of the shell (1) is fixedly connected with a buckle (19) at the top.

5. The centrifuge of claim 1, wherein: The bottom surface of the shell (1) is fixedly connected with an L-shaped plate (13), the top surface of the L-shaped plate (13) is fixedly connected with a motor (14), and the output end of the motor (14) penetrates through the bottom surface of the shell (1) and is fixedly connected with the bottom surface of the rotating drum (3) in the middle.

6. A high efficiency clean cake centrifuge according to claim 1, wherein: The outer wall of the shell (1) is fixedly connected with a controller (18), and the top surface of the rotating drum (3) is fixedly connected with a splash-proof ring (21).

7. The centrifuge of claim 1, wherein: The bottom surface of the shell (1) is fixedly connected with a plurality of supporting legs (15), and the outer wall of the connecting piece (6) is provided with a protective shell (20).

8. The centrifuge of claim 1, wherein: One end of the telescopic rod (11) is fixedly connected with a spring (22), and the other end of the spring (22) is fixedly connected with the inner wall of the sleeve (10).

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