Explosion-proof switch with good sealing performance
By using embedded piercing plug sleeves, sealing components and magnetic timber sealing structures in explosion-proof switches, the problem of insufficient sealing at pipe threading connections is solved, and better sealing performance and waterproof and dustproof effect are achieved.
Patent Information
- Application Number
- CN202420774005.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The existing explosion-proof switches are insufficiently sealed at the pipe thread connections, and the sealing performance at the opening of the explosion-proof housing is poor, which cannot effectively prevent the entry of water vapor and dust.
A well-sealed explosion-proof switch is designed, with embedded piercing plug sleeves, sealing components (including ring clip racks, front seal rings, middle jackets and rear seal rings) and semi-spherical wrapping bowls combined with magnetic tile Sealing the fence and connection frame, enhancing the sealing performance of threaded pipes and square openings, and a desiccant box and silicone drying sheet are installed at the bottom of the explosion-proof cover.
It achieves good sealing of threaded pipes and square openings, prevents water vapor and dust from entering, and at the same time drys the inner cavity of the explosion-proof metal shell, improving the overall sealing performance and waterproof and dustproof effect.
Smart Images
Figure CN222190527U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of explosion-proof switches and relates to an explosion-proof switch with good sealing performance. Background Art
[0002] Explosion-proof switch, as the name implies, can be used in harsh and dangerous explosion environments. Explosion-proof switch is mainly used in various applications that require a safe, reliable and easy-to-disconnect connection, especially in machinery and equipment in manufacturing plants where explosive and flammable gases may exist, and system power supply occasions; Patent No. CN202021399059.X discloses an explosion-proof switch, including an anti-static all-plastic shell, an explosion-proof core installed in the shell, the shell includes a cover plate and a bottom shell, the cover plate is detachably covered on the top of the bottom shell, the explosion-proof core is detachably installed in the bottom shell, the top surface of the cover plate is recessed with an installation groove for installing the switch, the inner bottom surface of the installation groove is provided with an outlet, the outlet of the outlet is connected to the switch, the periphery of the outlet is provided with a sealing structure to protect the outlet, the cover plate is provided with a water diversion groove, and the bottom shell is provided with a joint. The explosion-proof switch has the advantages of light weight, high strength, good sealing, low cost, easy installation, corrosion resistance and high waterproof and dustproof.
[0003] The above disclosed explosion-proof switch has the disadvantages that the sealing performance of the connection with the pipeline threading cannot be guaranteed, and the sealing of the opening of the explosion-proof housing is also poor. Therefore, we design an explosion-proof switch with good sealing performance. Summary of the invention
[0004] The utility model aims to provide an explosion-proof switch with good sealing performance to solve the problems raised in the above-mentioned background technology.
[0005] The purpose of the utility model can be achieved through the following technical solutions: an explosion-proof switch with good sealing performance, comprising an explosion-proof metal shell, two wire threading pipes and a control switch button, a square opening is provided at the top of the explosion-proof metal shell, a control switch button connected to the explosion-proof metal shell is arranged inside the square opening, a sealed connection frame is provided at the top of the square opening, a magnetic sealing enclosure is arranged inside the sealed connection frame, an explosion-proof cover is movably provided on one side of the sealed connection frame, the bottom end of the explosion-proof cover is in contact with the magnetic sealing enclosure, the two wire threading pipes are arranged at both ends of the explosion-proof metal shell, an embedded puncture plug sleeve is arranged at one end opening of the two wire threading pipes, and a sealing component is arranged in the middle of the two wire threading pipes.
[0006] In the above-mentioned explosion-proof switch with good sealing performance, each of the sealing components includes a ring-type frame, a front sealing ring, an intermediate jacket and a rear sealing ring. The front end and the rear end of the ring-type frame are respectively connected to the front sealing ring and the rear sealing ring. The intermediate jacket is arranged between the front sealing ring and the rear sealing ring and is adhesively connected to the ring-type frame.
[0007] In the above-mentioned explosion-proof switch with good sealing performance, a desiccant box is arranged in the middle of the bottom end of the explosion-proof cover plate, and a silica gel drying sheet is arranged inside the desiccant box.
[0008] In the above-mentioned explosion-proof switch with good sealing performance, one end of the two embedded puncture plug sleeves is provided with a hemispherical wrapping bowl, the middle part of the two hemispherical wrapping bowls is provided with a sealing ring, and the two hemispherical wrapping bowls are respectively plugged into the ends of the corresponding threading pipes.
[0009] In the above-mentioned explosion-proof switch with good sealing performance, a flip-open connection portion is provided on one side of the explosion-proof cover plate, and the flip-open connection portion and the explosion-proof cover plate are an integrated structure.
[0010] In the above-mentioned explosion-proof switch with good sealing performance, a housing mounting track bar is arranged at the bottom end of the explosion-proof metal housing.
[0011] Compared with the prior art, the utility model has the advantages of an explosion-proof switch with good sealing performance: an embedded puncture plug sleeve is arranged at the opening at one end of the threading pipe, a sealing component is arranged in the middle of the threading pipe, and the sealing component includes a ring snap-in frame, a front sealing ring, an intermediate jacket and a rear sealing ring and other structures, so that the pipe has a good sealing effect when threading, effectively preventing the entry of water vapor and dust, and a hemispherical wrapping bowl and a sealing sealing ring are arranged to facilitate the sealing operation of the opening at one end of the threading pipe, reduce the gap in contact with the outside world, and facilitate better sealing; a magnetic sealing enclosure and a sealing connection frame are arranged at the square opening to connect the explosion-proof cover plate, so that the square opening also has good sealing performance, reducing the entry of air and water vapor, and at the same time, a desiccant box and a silica gel drying sheet are arranged at the bottom of the explosion-proof cover plate, which can dry the inner cavity of the explosion-proof metal shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The utility model is a three-dimensional structural schematic diagram of an explosion-proof switch with good sealing performance.
[0013] Figure 2 The utility model is a structural schematic diagram of a square opening of an explosion-proof switch with good sealing performance.
[0014] Figure 3 The utility model is a three-dimensional structural schematic diagram of an explosion-proof switch ring clip-in frame with good sealing performance.
[0015] In the figure, 1. explosion-proof metal shell; 2. threading pipe; 3. embedded puncture plug sleeve; 4. hemispherical wrapping bowl; 5. sealing ring; 6. ring snap-in rack; 7. shell mounting track bar; 8. explosion-proof cover; 9. flip open connection; 10. square opening; 11. control switch button; 12. magnetic sealing enclosure; 13. sealing connection frame; 14. desiccant box; 15. silica gel drying sheet; 16. front sealing ring; 17. middle jacket; 18. rear sealing ring. DETAILED DESCRIPTION
[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0017] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model is an explosion-proof switch with good sealing performance;
[0018] Embodiment: The explosion-proof switch includes an explosion-proof metal shell 1, two wire threading pipes 2 and a control switch button 11. A square opening 10 is provided at the top of the explosion-proof metal shell 1. A control switch button 11 connected to the explosion-proof metal shell 1 is arranged inside the square opening 10. A sealing connection frame 13 is provided at the top of the square opening 10. A magnetic sealing enclosure 12 is arranged inside the sealing connection frame 13. An explosion-proof cover 8 is movably arranged on one side of the sealing connection frame 13. A flip-up connection part 9 is provided on one side of the explosion-proof cover 8. The flip-up connection part 9 and the explosion-proof cover 8 are an integrated structure. The bottom end of the explosion-proof cover 8 is in contact with the magnetic sealing enclosure 12. Two wire threading pipes 2 are arranged at both ends of the explosion-proof metal shell 1. An embedded puncture plug sleeve 3 is arranged at one end opening of the two wire threading pipes 2. A sealing component is arranged in the middle of the two wire threading pipes 2.
[0019] In this embodiment, if Figure 3 As shown, in order to ensure the sealing effect of the threading pipe 2 during threading, each sealing assembly includes a ring clip frame 6, a front sealing ring 16, an intermediate jacket 17 and a rear sealing ring 18. The front end and the rear end of the ring clip frame 6 are respectively connected to the front sealing ring 16 and the rear sealing ring 18, and the intermediate jacket 17 is arranged between the front sealing ring 16 and the rear sealing ring 18 and the intermediate jacket 17 is bonded to the ring clip frame 6.
[0020] In this embodiment, in order to dry the inner cavity of the explosion-proof metal housing 1 , a desiccant box 14 is provided in the middle of the bottom end of the explosion-proof cover plate 8 , and a silica gel drying sheet 15 is provided inside the desiccant box 14 .
[0021] In this embodiment, if Figure 1As shown, in order to seal the opening at one end of the threading pipe 2 and reduce the gap in contact with the outside world to facilitate better sealing, one end of the two embedded puncture plug sleeves 3 is provided with a hemispherical wrapping bowl 4, and the middle part of the two hemispherical wrapping bowls 4 is provided with a sealing ring 5, and the two hemispherical wrapping bowls 4 are respectively plugged into the end of the corresponding threading pipe 2.
[0022] In this embodiment, in order to facilitate assembly and positioning of the explosion-proof metal housing 1 , a housing mounting track bar 7 is provided at the bottom end of the explosion-proof metal housing 1 .
[0023] Working principle: The explosion-proof metal housing 1 is positioned to the installation area through the housing installation track bar 7, and connected with corresponding bolts and other accessories. The inside of the threading pipe 2 is used for threading the wires and one end of the wires is connected to the control switch button 11 of the explosion-proof metal housing 1, forming a good circuit control;
[0024] The technical solution is to set an embedded puncture plug sleeve 3 at the opening of one end of the threading pipe 2, and set a sealing component in the middle of the threading pipe 2. The sealing component includes a ring clip frame 6, a front sealing ring 16, a middle jacket 17 and a rear sealing ring 18, so that the threading pipe 2 has a good sealing effect when threading, effectively preventing the entry of water vapor and dust, and a hemispherical wrapping bowl 4 and a sealing sealing ring 5 are set to seal the opening of one end of the threading pipe 2, thereby reducing the gap in contact with the outside world and facilitating better sealing.
[0025] The technical solution connects the explosion-proof cover 8 by arranging a magnetic sealing enclosure 12 and a sealing connection frame 13 at the square opening 10, so that the square opening 10 also has good sealing performance and reduces the entry of air and water vapor. At the same time, a desiccant box 14 and a silica gel drying sheet 15 are arranged at the bottom of the explosion-proof cover 8 to dry the inner cavity of the explosion-proof metal shell 1.
[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.
Claims
1. An explosion-proof switch with good sealing performance, comprising an explosion-proof metal housing (1), two wire threading pipes (2) and a control switch button (11), characterized in that: A square opening (10) is provided at the top of the explosion-proof metal casing (1), a control switch button (11) connected to the explosion-proof metal casing (1) is arranged inside the square opening (10), a sealing connection frame (13) is provided at the top of the square opening (10), a magnetic sealing enclosure (12) is arranged inside the sealing connection frame (13), an explosion-proof cover plate (8) is movably arranged on one side of the sealing connection frame (13), the bottom end of the explosion-proof cover plate (8) is in contact with the magnetic sealing enclosure (12), two wire threading pipes (2) are arranged at two ends of the explosion-proof metal casing (1), an embedded puncture plug sleeve (3) is arranged at one end opening of the two wire threading pipes (2), and a sealing component is arranged in the middle of the two wire threading pipes (2).
2. The explosion-proof switch with good sealing performance according to claim 1, characterized in that: Each sealing assembly comprises a ring snap-in frame (6), a front sealing ring (16), an intermediate jacket (17) and a rear sealing ring (18); the front end and the rear end of the ring snap-in frame (6) are respectively connected to the front sealing ring (16) and the rear sealing ring (18); the intermediate jacket (17) is arranged between the front sealing ring (16) and the rear sealing ring (18), and the intermediate jacket (17) is bonded to the ring snap-in frame (6).
3. The explosion-proof switch with good sealing performance according to claim 1, characterized in that: A desiccant box (14) is arranged in the middle of the bottom end of the explosion-proof cover plate (8), and a silica gel drying sheet (15) is arranged inside the desiccant box (14).
4. The explosion-proof switch with good sealing performance according to claim 1, characterized in that: One end of each of the two embedded puncture plug sleeves (3) is provided with a hemispherical wrapping bowl (4), the middle of each of the two hemispherical wrapping bowls (4) is provided with a sealing ring (5), and the two hemispherical wrapping bowls (4) are respectively plugged into the end of the corresponding threading pipe (2).
5. The explosion-proof switch with good sealing performance according to claim 1, characterized in that: A flip-open connection portion (9) is provided on one side of the explosion-proof cover plate (8), and the flip-open connection portion (9) and the explosion-proof cover plate (8) are an integrated structure.
6. The explosion-proof switch with good sealing performance according to claim 1, characterized in that: The bottom end of the explosion-proof metal casing (1) is provided with a casing mounting track bar (7).