Net type atomizer with synchronous oscillation of double-layer oscillation net

Abstract

The net type atomizer comprises a mist bottle, the top of the mist bottle is fixedly connected with a solution bin, the front side of the mist bottle is fixedly connected with a connecting pipeline, the inner wall of the connecting pipeline is fixedly connected with an atomizing net, the front side of the connecting pipeline is further fixedly connected with a bottle pipe, and the outer portion of the bottle pipe is detachably connected with a cover pipe; the front side of the cover pipe is fixedly connected with a mask, the front side of the connecting pipeline is rotationally connected with a sealing assembly tightly clamped with the cover pipe, two clamping rods are fixedly connected to the outer portion of the cover pipe, the other ends of the clamping rods are fixedly connected with elastic columns, the rear sides of the elastic columns are movably connected with magnetic blocks, and the outer portion of the connecting pipeline is rotationally connected with a triggering assembly. A sliding rod is fixedly connected to the inner side of the triggering assembly. According to the device, through the structural design of mutual combination of magnetic attraction, magnetic repulsion and mechanical locking, accurate and efficient connection and stable positioning of all parts of the device are achieved, and the reliability and convenience of device use are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of biomedical engineering technology, specifically to a mesh nebulizer with synchronous oscillation of a double-layer oscillating mesh. Background Technology

[0002] Biomedical engineering is an interdisciplinary field that integrates biology, medicine, engineering, and materials science. Its core is using engineering technology to solve healthcare problems, encompassing disease diagnosis, treatment, rehabilitation, and health management. Based on mathematical, scientific, and engineering principles, and combined with medical knowledge such as anatomy and physiology, it develops various medical devices, diagnostic tools, and treatment solutions, such as AI-assisted image screening, absorbable scaffolds, and intelligent prostheses. It also involves sub-fields such as biomaterials, tissue engineering, and neural engineering, ultimately aiming to improve diagnostic and treatment efficiency and enhance patients' quality of life.

[0003] The practical application of this technology has spurred the development of numerous precision medical devices, with the mesh nebulizer featuring synchronous oscillation of a dual-layer oscillating mesh being a prime example. This active medical device, designed for the treatment of respiratory diseases, utilizes piezoelectric ceramics to convert electrical energy into mechanical energy, driving the dual-layer oscillating mesh to vibrate synchronously at high frequencies. Under the shearing force of the mesh's micropores, the medication is transformed into uniform aerosol particles of 1-5μm, easily absorbed by the lungs. The dual-layer design further enhances nebulization efficiency and reduces medication residue (only 0.1-0.5mL). Requiring no compressor, it offers advantages such as portability, quiet operation, and high drug delivery efficiency, making it particularly suitable for nebulization therapy for children and the elderly.

[0004] However, in existing technologies, some fogging cans and masks are fixed by friction-based direct insertion or simple mechanical locking. Because masks need to be cleaned regularly for multiple uses and to avoid cross-infection, they are repeatedly disassembled and reassembled. In addition, due to wear and tear during long-term use, the components of this type of connection structure are prone to wear and aging, which can lead to loosening of the connection and make it impossible to maintain stable connection performance in the long term.

[0005] Therefore, a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh, in order to solve the problem that components of the simple mechanical locking connection structure in the prior art are prone to wear and aging, which leads to loose connection and makes it impossible to maintain stable connection performance for a long time.

[0007] The objective of this invention is achieved through the following technical solution: a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh, comprising an atomizing bottle, a solution chamber fixedly connected to the top of the atomizing bottle, a connecting pipe fixedly connected to the front side of the atomizing bottle, an atomizing mesh fixedly connected to the inner wall of the connecting pipe, a bottle tube fixedly connected to the front side of the connecting pipe, a cover tube detachably connected to the outside of the bottle tube, a face mask fixedly connected to the front side of the cover tube, a sealing assembly tightly engaging with the cover tube rotatably connected to the front side of the connecting pipe, two locking rods fixedly connected to the outside of the cover tube, an elastic column fixedly connected to the other end of the locking rods, a magnetic block movably connected to the rear side of the elastic column, a triggering assembly rotatably connected to the outside of the connecting pipe, a sliding rod fixedly connected to the inner side of the triggering assembly, a magnetic rod fixedly connected to one end of the sliding rod, two shaped magnetic shells slidably connected to the inner wall of the connecting pipe, the sliding rod and the magnetic rod penetrating the magnetic block and the magnetic shell, the magnetic block and the magnetic shell magnetically attracting each other, while the magnetic rod and the magnetic shell repelling each other.

[0008] As a further description of the above technical solution: The sealing assembly includes a rubber pad rotatably connected to the front side of the connecting pipe. The front side of the rubber pad is tightly engaged with the rear side of the cover tube. A rotating ring is fixedly connected to the rear side of the rubber pad. A retaining ring is fixedly connected to the rear side of the rotating ring. A plurality of ball bearings are movably connected to the rear side of the retaining ring. As a further description of the above technical solution: The other end of the clamp is fixedly connected to a limiting ring, the front side of the elastic column is fixedly connected to the rear side of the limiting ring, and the outer side of the limiting ring is slidably connected to the inner wall of the connecting pipe. As a further description of the above technical solution: The triggering component includes an operating ring rotatably connected to the outside of the connecting pipe, two connecting rods fixedly connected to the inner wall of the operating ring, and the outside of the sliding rod fixedly connected to one end of the connecting rods; As a further description of the above technical solution: The magnetic shell is fixedly connected to two limiting blocks, and the limiting blocks are slidably connected to the inner wall of the connecting pipe. As a further description of the above technical solution: The internal components of the atomizing bottle, solution chamber, and connecting pipes are interconnected, and the atomizing mesh is a double-layer oscillating atomizing mesh. As a further description of the above technical solution: The plurality of balls are evenly distributed circumferentially along the rear side of the retaining ring, and the outer side of the balls is movably connected to the inner wall of the connecting pipe. As a further description of the above technical solution: The inner wall of the connecting pipe is provided with a sliding groove, which is adapted to the shape of the sliding rod and the magnetic rod, and the sliding rod and the magnetic rod are slidably connected to the inner wall of the sliding groove.

[0009] Compared with the prior art, the advantages of the present invention are as follows: 1. In this invention, the magnetic attraction structure enables the magnetic shell and magnetic block to quickly and accurately fit together. Combined with the guiding and limiting effect of the limiting block, it prevents misalignment during the connection process and ensures fitting accuracy. Simultaneously, the repulsive properties of the magnetic rod and magnetic shell create a stable reverse force, effectively preventing the sliding rod from detaching from the through-channel, achieving reliable anti-detachment positioning. Furthermore, the dual combination of mechanical locking and magnetic locking completely solves the core pain points of traditional mechanical snap-fit ​​connections, such as easy wear, loosening after aging, and decreased reliability. Even with long-term use, it maintains stable connection performance and can be easily separated when disassembly is required, balancing connection stability and ease of operation.

[0010] 2. In this invention, during installation, the cover tube and the rubber gasket fit together and are continuously compressed to form a gapless sealed environment, which can effectively prevent leakage of tiny particles after atomization, avoiding safety hazards and reduced performance caused by particle leakage; at the same time, the sealing structure, together with the retaining ring, rotating ring and other limiting and protective structures, can maintain the stability of the sealing performance during equipment rotation and long-term use, ensuring that all atomized particles can be discharged through the preset channel for the user to inhale, which not only ensures the safety of use, but also improves the efficiency of atomization. Attached Figure Description

[0011] Figure 1 This is an overall schematic diagram of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh according to the present invention; Figure 2 This is a schematic diagram of the bottle tube structure of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh according to the present invention; Figure 3 This is a schematic diagram of the atomizing mesh structure of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh according to the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram of the clamping rod structure of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh according to the present invention; Figure 6 yes Figure 5 Enlarged view of point B in the image; Figure 7 This is a schematic diagram of the limiting ring structure of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh according to the present invention; Figure 8 yes Figure 7 Enlarged view of point C in the image; Figure 9This is a schematic diagram of the magnetic shell structure of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh according to the present invention.

[0012] Label Explanation: 1. Atomizing bottle; 2. Solution chamber; 3. Connecting pipe; 4. Atomizing net; 5. Bottle tube; 6. Cover tube; 7. Face mask; 8. Rubber pad; 9. Rotating ring; 10. Snap ring; 11. Ball bearing; 12. Snap rod; 13. Limiting ring; 14. Elastic column; 15. Magnetic block; 16. Operating ring; 17. Connecting rod; 18. Sliding rod; 19. Magnetic rod; 20. Magnetic shell; 21. Limiting block. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 9 The illustration shows an embodiment of a mesh atomizer with synchronous oscillation of a double-layer oscillating mesh provided by the present invention. It includes a mist bottle 1 for storing the solution required for atomization, providing initial space for solution flow. A solution chamber 2 is fixedly connected to the top of the mist bottle 1 to receive the solution transported by the mist bottle 1, providing a transfer space for the solution to be transferred to the connecting pipe 3, ensuring a stable solution supply. A connecting pipe 3 is fixedly connected to the front side of the mist bottle 1, forming a key channel for solution flow, providing a path for the solution to be transported to the atomizing mesh 4 and for the transport of atomized particles. It also provides an installation carrier for various connecting and limiting structures. An atomizing mesh 4 is fixedly connected to the inner wall of the connecting pipe 3 to effectively improve the fineness and uniformity of the atomized particles, enhance solution atomization efficiency, and ensure that the liquid is fully broken into inhalable microparticles. The mist bottle 1, solution chamber 2, and connecting pipe 3 are interconnected, and the atomizing mesh 4 is a double-layer oscillating atomizing mesh, used to further optimize the atomization effect and ensure that the solution is fully atomized.

[0014] A bottle tube 5 is fixedly connected to the front of the connecting pipe 3, which is used to connect the connecting pipe 3 and the cover tube 6, providing a channel for the atomized particles to be transported from the connecting pipe 3 to the cover tube 6, ensuring smooth particle delivery. The cover tube 6 is detachably connected to the outside of the bottle tube 5, which is used to connect the bottle tube 5 and the mask 7, providing a path for the atomized particles to be transported from the bottle tube 5 to the mask 7. At the same time, it cooperates with the rubber gasket 8 to form a sealed environment to prevent particle leakage. The mask 7 is fixedly connected to the front of the cover tube 6, which is used to discharge the atomized particles and provide a terminal carrier for the user to inhale the atomized particles, ensuring convenient inhalation for the user. A sealing component that is tightly snapped into the cover tube 6 is rotatably connected to the front of the connecting pipe 3, which is used to achieve a sealed protection at the connection between the cover tube 6 and the connecting pipe 3, and at the same time to help ensure the smoothness of the rotation operation. The sealing component includes a rubber gasket 8 that is rotatably connected to the front of the connecting pipe 3, which is used to fit with the cover tube 6 and continuously squeeze to form a gapless sealed environment, effectively blocking the leakage of tiny particles after atomization, avoiding safety hazards and reduced performance, and ensuring stable sealing performance.

[0015] The front side of the rubber pad 8 is tightly engaged with the rear side of the cover tube 6. A rotating ring 9 is fixedly connected to the rear side of the rubber pad 8 to provide fixed support for the rubber pad 8. At the same time, it works with the retaining ring 10 and the ball bearings 11 to achieve a stable rotational connection between the sealing component and the connecting pipe 3, ensuring the continuity of the rotation process. The retaining ring 10 is fixedly connected to the rear side of the rotating ring 9 to limit and protect the rotating ring 9, preventing the rotating ring 9 from disengaging from the corresponding mating structure, ensuring a stable fit between the sealing component and the connecting structure, and providing installation and movement space for the ball bearings 11. Multiple ball bearings 11 are movably connected to the rear side of the retaining ring 10 to roll in the corresponding area during rotation, converting sliding friction into rolling friction, greatly reducing rotational resistance, and ensuring smooth rotational operation. Multiple ball bearings 11 are evenly distributed circumferentially along the rear side of the retaining ring 10, and the outer side of the ball bearings 11 is movably connected to the inner wall of the connecting pipe 3.

[0016] The outer fixed connection of the cover tube 6 consists of two clamps 12, which provide fixed support for the elastic column 14, the limiting ring 13, and the magnetic block 15. During installation and disassembly, these clamps also facilitate the adaptation of related structures, aiding in the stable connection and easy separation of the mask 7 and the connecting pipe 3. The other end of each clamp 12 is fixedly connected to an elastic column 14, which, due to its elastic properties, undergoes adaptive deformation to provide space for the magnetic block 15 to move smoothly within the corresponding annular area. This helps the magnetic block 15 to precisely fit with the magnetic shell 20, while also improving the fit between the clamp 12 and the inner wall of the connecting pipe 3. The other end of each clamp 12 is fixedly connected to... A limiting ring 13 is provided for sliding into the corresponding inner wall as the mask 7 and the locking rod 12 move, further improving the stability of the overall structural connection and preventing loosening during use. The front side of the elastic column 14 is fixedly connected to the rear side of the limiting ring 13, and the outer side of the limiting ring 13 is slidably connected to the inner wall of the connecting pipe 3. A magnetic block 15 is movably connected to the rear side of the elastic column 14, which interacts with the magnetic shell 20 due to the magnetic attraction characteristics, causing the magnetic shell 20 to move towards itself and fit completely, ensuring the accuracy of the fit. At the same time, it provides an adaptation channel for the passage of the sliding rod 18 and the magnetic rod 19, and assists in realizing the magnetic locking function.

[0017] A trigger assembly is rotatably connected to the outside of the connecting pipe 3 to control the rotation and movement of the slide rod 18 and the magnetic rod 19, thereby achieving anti-detachment positioning and unlocking of the connection structure and providing a convenient triggering method for disassembly operations. The trigger assembly includes an operating ring 16 rotatably connected to the outside of the connecting pipe 3 for the user to rotate or pull. Through the connecting rod 17, the slide rod 18 and the magnetic rod 19 rotate or move synchronously, realizing the opening and closing of the anti-detachment positioning. The operation is convenient. Two connecting rods 17 are fixedly connected to the inner wall of the operating ring 16 to transmit the rotation or movement force of the operating ring 16, driving the slide rod 18 and the magnetic rod 19 to move synchronously, ensuring the effective transmission of the operating force of the trigger assembly. To ensure the reliability of the linkage structure, a sliding rod 18 is fixedly connected to the inner side of the trigger component. It rotates synchronously with the magnetic rod 19 and passes through the magnetic block 15 and the magnetic shell 20. It achieves stable positioning in conjunction with the repulsive characteristics of the magnetic rod 19. At the same time, it slides in the groove, providing fixed support and motion guidance for the magnetic rod 19 and preventing structural displacement. The external side of the sliding rod 18 is fixedly connected to one end of the connecting rod 17. The magnetic rod 19 is fixedly connected to one end of the sliding rod 18. It forms a stable local magnetic field with the magnetic shell 20 due to the repulsive characteristics, generating a continuous reverse force. This effectively prevents the sliding rod 18 and the magnetic rod 19 from detaching from the through channel, realizing the anti-detachment positioning of the connection structure and ensuring the stability of the connection.

[0018] The inner wall of the connecting pipe 3 is provided with a groove to adapt to the shape of the sliding rod 18 and the magnetic rod 19, providing precise guidance for the sliding and rotation of the sliding rod 18 and the magnetic rod 19, limiting their movement trajectory, preventing the sliding rod 18 and the magnetic rod 19 from deviating during movement, and ensuring smooth movement and precise coordination. The groove is adapted to the shape of the sliding rod 18 and the magnetic rod 19, and the sliding rod 18 and the magnetic rod 19 are slidably connected to the inner wall of the groove. The inner wall of the connecting pipe 3 is slidably connected to two magnetic shells 20 with the same shape, which are used to magnetically cooperate with the magnetic block 15 to achieve quick and precise fit, and at the same time, they repel the magnetic rod 19 to form an anti-detachment force, which is conducive to the sliding... The passage between rod 18 and magnetic rod 19 provides a matching channel to assist in achieving a double locking function and ensure connection stability. The sliding rod 18 and magnetic rod 19 are set through magnetic block 15 and magnetic shell 20. Magnetic block 15 and magnetic shell 20 are magnetically attracted to each other, while magnetic rod 19 and magnetic shell 20 are repelled. Two limiting blocks 21 are fixedly connected to the outside of magnetic shell 20 to accurately guide and limit the movement trajectory of magnetic shell 20, prevent the magnetic shell 20 from deviating during movement, ensure the accuracy of the cooperation between magnetic shell 20 and magnetic block 15, and improve the stability of the structural cooperation. The external sliding connection of the limiting block 21 is to the inner wall of the connecting pipe 3.

[0019] Working principle: The atomizing bottle 1, solution chamber 2 and connecting pipe 3 are interconnected to form a complete channel for solution flow. The atomizing net 4 adopts a double-layer oscillation structure, which can effectively improve the fineness and uniformity of atomized particles compared with single-layer oscillation net technology, enhance solution atomization efficiency, and ensure that the liquid is fully broken into inhalable microparticles.

[0020] During installation, the face mask 7 is tilted slightly to align the cover tube 6 with the bottle tube 5. Simultaneously, the elastic post 14 and magnetic block 15 at the end of the lever 12 are inserted into the corresponding channel on the connecting pipe 3. The elastic post 14 adapts and deforms due to its elasticity, providing space for the magnetic block 15 to move smoothly within the corresponding annular area. The face mask 7 is then rotated to a horizontal position. At this point, the magnetic block 15 and the magnetic shell 20 interact due to their magnetic attraction, causing the magnetic shell 20 to move towards the magnetic block 15 and completely adhere to its exterior. The limiting block 21 precisely guides and limits the movement of the magnetic shell 20, preventing it from shifting during movement and ensuring the accuracy of the fit.

[0021] Then, rotating the operating ring 16 causes the sliding rod 18 and magnetic rod 19 to rotate synchronously via the connecting rod 17. This allows the sliding rod 18 and magnetic rod 19 to pass through the magnetic block 15 and magnetic shell 20. Due to their repulsive properties, the magnetic rod 19 and magnetic shell 20 form a stable local magnetic field. This magnetic field generates a continuous reverse force, effectively preventing the sliding rod 18 and magnetic rod 19 from detaching from the through-channel, thus achieving anti-detachment positioning of the connection structure. At the same time, the limiting ring 13 on the locking rod 12 slides into the corresponding inner wall as the mask 7 and locking rod 12 move, further enhancing the stability of the overall structural connection and preventing loosening during use. When it is necessary to remove the mask 7 for cleaning, simply pull the operating ring 16 in the opposite direction to manually overcome the repulsive force between the magnetic rod 19 and magnetic shell 20, and then rotate the mask 7 in the opposite direction to remove it.

[0022] During the installation and operation process described above, the cover tube 6 and the rubber gasket 8 fit together and are continuously compressed to form a tight sealing environment, which can effectively prevent the leakage of atomized particles and ensure safety and sealing. During rotation, the ball 11 rolls in the corresponding groove, converting sliding friction into rolling friction, which greatly reduces rotational resistance and ensures smooth rotation. The retaining ring 10 provides a limiting protection for the rotating ring 9, preventing the rotating ring 9 from disengaging from the corresponding mating structure and ensuring a stable fit between the sealing component and the connecting structure.

[0023] In operation, the solution enters the connecting pipe 3 through the atomizing bottle 1 and solution chamber 2, and finally reaches the atomizing net 4. The double-layer oscillating net starts synchronous oscillation, which efficiently breaks the solution into fine atomized particles. The atomized particles pass through the bottle tube 5 and the mask tube 6 in sequence, and are finally discharged from the mask 7 for the user to inhale.

[0024] Throughout the entire workflow, the dual design of mechanical locking and magnetic locking ensures stable and durable magnetic field force, maintaining stable connection performance even after long-term use. This completely solves the core pain points of loosening after wear in mechanical locking and decreased reliability after aging in friction locking. In addition, the magnetic repulsion anti-detachment design achieves both a secure connection and easy separation when disassembly is required, balancing convenience and reliability. The adaptive compression design of the sealing components, the drag reduction design of the ball bearing 11, and the guiding and protective design of the limiting structure together ensure the sealing, smoothness, and stability of the equipment operation. Combined with the high-efficiency atomization advantage of the double-layer oscillating atomizing mesh 4, the equipment achieves the dual effects of convenient use and high-efficiency atomization.

Claims

1. A mesh nebulizer with dual layer oscillating mesh synchronization oscillation, comprising a nebulizer bottle (1), characterized in that: The top of the atomizer (1) is fixedly connected with a solution bin (2), the front side of the atomizer (1) is fixedly connected with a connecting pipeline (3), the inner wall of the connecting pipeline (3) is fixedly connected with an atomization net (4), the front side of the connecting pipeline (3) is also fixedly connected with a bottle pipe (5), the outside of the bottle pipe (5) is detachably connected with a cover pipe (6), the front side of the cover pipe (6) is fixedly connected with a face guard (7), the front side of the connecting pipeline (3) is rotatably connected with a sealing assembly which is tightly clamped with the cover pipe (6), the outside of the cover pipe (6) is fixedly connected with two clamping rods (12), the other end of the clamping rod (12) is fixedly connected with an elastic column (14), the rear side of the elastic column (14) is movably connected with a magnetic block (15), the outside of the connecting pipeline (3) is rotatably connected with a trigger assembly, the inner side of the trigger assembly is fixedly connected with a slide rod (18), one end of the slide rod (18) is fixedly connected with a magnetic bar (19), the inner wall of the connecting pipeline (3) is slidably connected with two magnetically compatible magnetic shells (20), the slide rod (18) and the magnetic bar (19) penetrate through the magnetic block (15) and the magnetic shell (20), the magnetic block (15) and the magnetic shell (20) are magnetically attracted to each other, and the magnetic bar (19) and the magnetic shell (20) are magnetically repelled from each other.

2. The mesh nebulizer of claim 1, wherein the dual layer of oscillating mesh is synchronized to oscillate. The sealing assembly comprises a rubber pad (8) which is rotatably connected to the front side of the connecting pipeline (3), the front side of the rubber pad (8) is tightly clamped with the rear side of the cover pipe (6), the rear side of the rubber pad (8) is fixedly connected with a rotating ring (9), the rear side of the rotating ring (9) is fixedly connected with a clamping ring (10), and the rear side of the clamping ring (10) is movably connected with a plurality of rolling balls (11).

3. The mesh nebulizer of claim 1, wherein the dual layer of oscillating mesh is synchronized to oscillate. The other end of the clamping rod (12) is fixedly connected with a limiting ring (13), the front side of the elastic column (14) is fixedly connected to the rear side of the limiting ring (13), and the outside of the limiting ring (13) is slidably connected to the inner wall of the connecting pipeline (3).

4. The mesh nebulizer of claim 1, wherein the dual layer of oscillating mesh is synchronized to oscillate. The trigger assembly comprises an operating ring (16) which is rotatably connected to the outside of the connecting pipeline (3), the inner wall of the operating ring (16) is fixedly connected with two connecting rods (17), and the outside of the slide rod (18) is fixedly connected to one end of the connecting rod (17).

5. The mesh nebulizer of claim 1, wherein the dual layer of oscillating mesh is synchronized to oscillate. The outside of the magnetic shell (20) is fixedly connected with two limiting blocks (21), and the outside of the limiting block (21) is slidably connected to the inner wall of the connecting pipeline (3).

6. The mesh nebulizer of claim 1, wherein the dual layer of oscillating mesh is synchronized to oscillate. The inside of the atomizer (1), the solution bin (2) and the connecting pipeline (3) are in communication with each other, and the atomization net (4) is a double-layer oscillation atomization net.

7. The mesh nebulizer of claim 2, wherein the dual layer of oscillating mesh is synchronized to oscillate. A plurality of rolling balls (11) are evenly distributed along the rear side of the clamping ring (10), and the outside of the rolling ball (11) is movably connected to the inner wall of the connecting pipeline (3).

8. The dual layer oscillating mesh synchronized oscillating mesh nebulizer of claim 1, wherein: The inner wall of the connecting pipeline (3) is provided with a sliding groove, the sliding groove is matched with the shape of the slide rod (18) and the magnetic bar (19), and the slide rod (18) and the magnetic bar (19) are slidably connected to the inner wall of the sliding groove.

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