An explosion-proof switch

Abstract

This utility model relates to the field of explosion-proof electrical equipment technology, and in particular to an explosion-proof switch, comprising: a housing, a cover, an explosion-proof control switch body, and an elastic seal; the housing and the cover enclose a receiving cavity, and the switch body is disposed within the receiving cavity; the housing and the cover are screwed together by an external thread section and an internal thread section to form a threaded explosion-proof mating surface, and the elastic seal is sandwiched between the opposite end faces at the mating surface to form an environmental seal at that location; the threaded explosion-proof mating surface provides a flame extinguishing channel that meets the explosion-proof requirements; the elastic seal performs the sealing function, realizing the structural separation of explosion-proof and sealing, preventing dust and moisture from entering the receiving cavity from the connection part, improving sealing reliability and environmental adaptability, reducing dependence on the sealing performance of the threaded mating part, reducing processing requirements, and facilitating assembly and processing, thereby improving the overall practicality and reliability of the product.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof electrical equipment technology, and in particular to an explosion-proof switch. Background Technology

[0002] Explosion-proof switches are key electrical control devices used in flammable and explosive hazardous environments. Their core safety requirement is to prevent potential internal electrical sparks or high temperatures from igniting the external environment. Flameproof type is one of their main protection types. Its principle is to seal electrical components that may generate sparks in a housing with sufficient strength. When an internal explosion occurs, the housing can withstand the explosion pressure and prevent the explosion from propagating to the outside. Among them, the threaded explosion-proof structure formed by threaded engagement is widely used because of its compact structure and reliable connection.

[0003] However, existing explosion-proof switches with threaded explosion-proof structures face a fundamental contradiction in design and manufacturing: to meet explosion-proof standards, the threaded mating surfaces need to have precise and controlled clearances; while to ensure environmental sealing, the mating surfaces need to be as tight and gapless as possible. To resolve this contradiction, existing technologies typically rely on improving the machining accuracy of the threaded mating surfaces (e.g., surface roughness Ra≤3.2μm, dimensional tolerance ±0.02mm) to simultaneously achieve both explosion-proof and sealing performance. This, to some extent, leads to higher processing costs and limited manufacturing efficiency.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides an explosion-proof switch, thereby effectively solving the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an explosion-proof switch, comprising: a housing, a cover, an explosion-proof control switch body, and an elastic sealing element; The housing and the cover enclose a receiving cavity, and the explosion-proof control switch body is disposed within the receiving cavity; The housing and the cover are connected by a mutually mating external thread section and an internal thread section, forming a threaded explosion-proof mating surface; The elastic seal is sandwiched between the opposite end faces of the threaded explosion-proof mating surfaces of the housing and the cover; The threaded explosion-proof mating surface is used to provide a flame extinguishing channel that meets explosion-proof requirements, and the elastic seal is used to achieve environmental sealing at the threaded explosion-proof mating surface.

[0007] Furthermore, the shell cover is provided with a convex ring, and the surface of the convex ring is provided with the external thread section; The root of the convex ring is provided with a first groove, and the elastic seal is disposed in the first groove; The inner wall of the housing is provided with an internal thread section that mates with the external thread section.

[0008] Furthermore, the housing is provided with a convex ring, and the surface of the convex ring is provided with the external thread section; The root of the convex ring is provided with a first groove, and the elastic seal is disposed in the first groove; The inner wall of the shell cover is provided with an internal thread section that mates with the external thread section.

[0009] Furthermore, it also includes an operating component, which includes a handle and a drive shaft; The handle is located on the outside of the housing cover; The drive shaft passes through the cover, one end of the drive shaft is connected to the handle, and the other end extends into the receiving cavity and is connected to the explosion-proof control switch body. A shaft sealing gasket is provided between the drive shaft and the housing cover.

[0010] Furthermore, the shaft seal gasket has a disc-shaped structure, including an inner ring and an outer ring, and an annular groove located between the inner ring and the outer ring; The bottom of the cover is provided with an annular flange, which is inserted into the annular groove to position and fix the shaft seal gasket.

[0011] Furthermore, it also includes at least one inlet sealing assembly; The housing sidewall is provided with a cable inlet channel; The inlet sealing assembly is disposed within the inlet channel and includes a sealing ring and a clamping nut; The clamping nut is threadedly connected to the inlet channel and is used to clamp the sealing ring.

[0012] Furthermore, the inlet sealing assembly also includes a baffle plate located inside the sealing ring.

[0013] Furthermore, it also includes a mounting structure for fixing the explosion-proof control switch body; The installation structure includes a fixed support column and a fixed base plate; The fixed support is connected to the inner wall of the housing, the fixed base plate is connected to the fixed support, and the explosion-proof control switch body is fixed to the fixed base plate.

[0014] Furthermore, the connection between the fixed support column and the inner wall of the housing, and between the fixed support column and the fixed base plate, is a detachable threaded connection.

[0015] The beneficial effects of this utility model are as follows: By setting an elastic sealing element between the threaded explosion-proof mating surfaces, this utility model can simultaneously achieve flame extinguishing channels and environmental sealing, effectively taking into account both explosion-proof safety requirements and environmental sealing needs, reducing manufacturing precision requirements and production costs, and improving equipment reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the explosion-proof switch. Figure 2 This is a cross-sectional view of an explosion-proof switch; Figure 3 In order to be in Figure 2 A magnified view of a section at point A in the middle; Figure 4 In order to be in Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the shell structure; Figure 6 This is a schematic diagram of the shell cover.

[0018] Reference numerals: 1. Housing; 11. Receiving cavity; 12. Threaded explosion-proof mating surface; 13. Internal thread section; 2. Housing cover; 21. Annular flange; 22. Convex ring; 221. External thread section; 222. First groove; 3. Explosion-proof control switch body; 4. Elastic seal; 5. Operating component; 51. Handle; 52. Drive shaft; 53. Shaft seal gasket; 531. Inner ring; 532. Annular groove; 533. Outer ring; 6. Inlet sealing component; 61. Sealing ring; 62. Baffle; 63. Compression nut; 7. Mounting structure; 71. Fixed support; 72. Fixed base plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1 to 6 As shown: An explosion-proof switch includes: a housing 1, a housing cover 2, an explosion-proof control switch body 3, and an elastic sealing element 4; The housing 1 and the cover 2 enclose and form a receiving cavity 11, and the explosion-proof control switch body 3 is disposed inside the receiving cavity 11; The housing 1 and the cover 2 are connected by a mutually mating external thread section 221 and internal thread section 13, forming a threaded explosion-proof mating surface 12. The elastic seal 4 is sandwiched between the opposite end faces of the threaded explosion-proof mating surface 12 of the housing 1 and the cover 2; The threaded explosion-proof mating surface 12 is used to provide a flame extinguishing channel that meets the explosion-proof requirements, and the elastic seal 4 is used to achieve environmental sealing at the threaded explosion-proof mating surface 12.

[0023] In this embodiment, the explosion-proof switch includes a housing 1, a cover 2, an explosion-proof control switch body 3, and an elastic sealing element 4. The housing 1 and the cover 2 enclose a cavity 11 for accommodating the explosion-proof control switch body 3. The explosion-proof control switch body 3 is installed in the cavity 11 to control the on / off state of the circuit. The housing 1 and the cover 2 are connected by a threaded connection. Specifically, the housing 1 and the cover 2 are respectively provided with a mating external thread section 221 and an internal thread section 13. When the housing 1 and the cover 2 are screwed together, a threaded explosion-proof mating surface 12 is formed between the external thread section 221 and the internal thread section 13. This threaded explosion-proof mating surface 12 constitutes a flame propagation path that meets the explosion-proof requirements. When an explosion occurs in the cavity 11, the flame and high-temperature gas are cooled and extinguished during propagation along the threaded explosion-proof mating surface 12, thereby preventing the explosion from propagating to the external environment. In this embodiment, the housing 1 and the cover 2 are connected by a threaded connection. An elastic seal 4 is also provided at the threaded explosion-proof mating surface 12. Specifically, the elastic seal 4 is sandwiched between the opposite end faces of the housing 1 and the cover 2 at the threaded explosion-proof mating surface 12. When the housing 1 and the cover 2 are screwed into place, the elastic seal 4 is compressed in the axial direction, thereby forming an independent environmental sealing structure at the threaded explosion-proof mating surface 12. Through the above structural arrangement, the threaded explosion-proof mating surface 12 is mainly used to provide a flame extinguishing channel that meets the explosion-proof requirements, while the environmental sealing function is undertaken by the elastic seal 4. This achieves the separation of the explosion-proof function and the environmental sealing function in structure. Since the elastic seal 4 can effectively block external media such as dust and water vapor, the threaded explosion-proof mating surface 12 no longer undertakes the environmental sealing function alone, thereby reducing the dependence on the sealing performance of the threaded mating surface. Under the premise of ensuring that the explosion-proof performance is not affected, the overall sealing reliability of the connection between the housing 1 and the cover 2 is improved.

[0024] By setting an independent elastic seal 4 at the threaded explosion-proof mating surface 12 of the housing 1 and the cover 2, the threaded explosion-proof mating surface 12 no longer independently undertakes the environmental sealing function while meeting the explosion-proof performance requirements. This achieves effective separation of the explosion-proof function and the environmental sealing function at the structural level. Under operating conditions with high dust or high humidity, this structure can effectively prevent external dust, water vapor and other media from entering the receiving cavity 11 through the connection between the housing 1 and the cover 2, improving the overall sealing reliability and environmental adaptability of the explosion-proof switch. At the same time, since the environmental sealing is achieved by the elastic seal 4, the dependence of the threaded explosion-proof mating surface 12 on the sealing performance is reduced. Under the premise of ensuring that the explosion-proof safety performance is not affected, the processing requirements of the threaded explosion-proof mating surface 12 are reduced, improving the overall practicality and reliability of the product.

[0025] As a specific embodiment of the internal thread section 13, the external thread section 221 and the elastic seal 4, the cover 2 is provided with a convex ring 22, and the surface of the convex ring 22 is provided with an external thread section 221. The root of the convex ring 22 is provided with a first groove 222, and the elastic seal 4 is disposed in the first groove 222; The inner wall of the housing 1 is provided with an internal thread section 13 that mates with the external thread section 221.

[0026] Specifically, when the cover 2 and the housing 1 are screwed into place, the external thread section 221 and the internal thread section 13 form a flame propagation path that meets the explosion-proof requirements. At the same time, the elastic sealing element 4, which is set in the first groove 222, is clamped between the opposite end faces of the cover 2 and the housing 1 at the threaded explosion-proof mating surface 12 and is subjected to axial compression, thereby forming an independent and continuous environmental sealing interface at the threaded explosion-proof mating surface 12. By arranging the elastic sealing element 4 at the root of the convex ring 22, the sealing structure can be made to be close to the starting area of ​​the threaded explosion-proof mating surface 12. Without affecting the threaded explosion-proof function, it can effectively prevent external media such as dust and water vapor from intruding into the receiving cavity 11 along the thread gap, thereby realizing the structural separation of the explosion-proof function and the environmental sealing function.

[0027] Another specific embodiment of the internal thread section 13, the external thread section 221, and the elastic seal 4 is as follows: the housing 1 is provided with a convex ring, and the surface of the convex ring is provided with an external thread section. A first groove 222 is provided at the root of the convex ring, and the elastic seal 4 is disposed in the first groove 222; The inner wall of the cover 2 is provided with an internal thread section that mates with the external thread section. Specifically, this structure also makes the threaded explosion-proof mating surface 12 mainly used to achieve the explosion-proof function, while the environmental sealing is undertaken by the elastic sealing element 4 set in the first groove 222. This provides an alternative implementation method for different housing 1 or cover 2 structural designs, and improves the sealing reliability and adaptability of the explosion-proof switch in different operating environments while ensuring that the explosion-proof performance is not affected.

[0028] As a preferred embodiment of the above embodiment, it further includes an operation component 5, which includes a handle 51 and a drive shaft 52; The handle 51 is located on the outside of the cover 2; The drive shaft 52 passes through the cover 2. One end of the drive shaft 52 is connected to the handle 51, and the other end extends into the receiving cavity 11 and is connected to the explosion-proof control switch body 3. A shaft sealing gasket 53 is provided between the drive shaft 52 and the housing cover 2.

[0029] Specifically, the operating component 5 includes a handle 51 and a drive shaft 52. The handle 51 is located outside the housing cover 2, facilitating operation by the operator from outside the explosion-proof switch. The drive shaft 52 passes axially through the housing cover 2, with one end connected to the handle 51 and the other end extending into the receiving cavity 11 formed by the housing 1 and the housing cover 2, and is connected to the transmission part of the explosion-proof control switch body 3, thereby transmitting the operating action of the handle 51 to the explosion-proof control switch body 3 to realize its on / off or state switching. Since the drive shaft 52 needs to rotate relative to the housing cover 2 during operation, to prevent external dust, water vapor, and other media from entering the receiving cavity 11 through the gap between the drive shaft 52 and the housing cover 2, in this embodiment... In this embodiment, a shaft sealing gasket 53 is provided between the drive shaft 52 and the housing cover 2. The shaft sealing gasket 53 is positioned around the drive shaft 52 at the point where the drive shaft 52 passes through the housing cover 2, ensuring that the drive shaft 52 remains in a sealed fit with the shaft sealing gasket 53 during rotation. This ensures the reliability of the operation component 5 while providing an effective environmental seal for the part of the drive shaft 52 that passes through the housing cover 2. By providing the shaft sealing gasket 53 between the drive shaft 52 and the housing cover 2, the operation component 5 achieves stable transmission while also providing sealing protection at the housing cover 2. This works in conjunction with the elastic seal 4 located at the threaded explosion-proof mating surface 12, thereby further improving the overall sealing reliability and environmental adaptability of the explosion-proof switch.

[0030] In this embodiment, the shaft seal gasket 53 has a disc-shaped structure, including an inner ring 531 and an outer ring 533, and an annular groove 532 located between the inner ring 531 and the outer ring 533; The bottom of the cover 2 is provided with an annular flange 21, which is inserted into the annular groove 532 for positioning and fixing the shaft seal gasket 53.

[0031] Specifically, to ensure that the inner ring 531 of the shaft seal gasket 53 is always in contact with the drive shaft 52 to form a continuous sealing interface, an annular flange 21 is integrally provided at the bottom of the cover 2 at the position where the drive shaft 52 passes through. The annular flange 21 extends axially and inserts into the annular groove 532 of the shaft seal gasket 53, thereby positioning and fixing the shaft seal gasket 53 in both axial and radial directions. When the drive shaft 52 rotates relative to the cover 2 during operation, the inner ring 531 of the shaft seal gasket 53 always remains in contact with the drive shaft 52 to form a continuous sealing interface. With the embedded cooperation between the annular flange 21 and the annular groove 532, the outer ring 533 of the shaft seal gasket 53 is reliably restricted to the predetermined position of the cover 2, avoiding displacement under rotation or vibration. This ensures smooth rotation of the drive shaft 52 while improving the sealing stability and reliability at the position where the drive shaft 52 passes through. Together with the elastic seal 4 at the threaded explosion-proof mating surface 12, it constitutes a multi-layer sealing protection structure for the explosion-proof switch.

[0032] This also includes at least one inlet sealing assembly 6; The housing 1 has an inlet channel on its side wall; The inlet sealing assembly 6 is disposed in the inlet channel and includes a sealing ring 61 and a clamping nut 63; The clamping nut 63 is threadedly connected to the inlet channel and is used to clamp the sealing ring 61.

[0033] Specifically, the side wall of the housing 1 is provided with an inlet channel. The cable passes through the inlet channel from the outside of the housing 1 and enters the receiving cavity 11 formed by the housing 1 and the cover 2. The inlet sealing assembly 6 is set in the inlet channel, including a sealing ring 61 sleeved on the outer circumference of the cable and a clamping nut 63 threadedly connected to the inlet channel. When the clamping nut 63 is tightened in the inlet direction, an axial clamping force is applied to the sealing ring 61, causing the sealing ring 61 to deform radially during the compression process. Its inner side is tightly attached to the outer circumference of the cable, and its outer side is tightly attached to the inner wall of the inlet channel, thereby forming a continuous sealing interface between the cable and the inlet channel. Through the above structural arrangement, it can effectively block external media such as dust and water vapor from entering the receiving cavity 11 along the inlet position. It cooperates with the elastic sealing element 4 set at the threaded explosion-proof joint surface 12 and the shaft sealing gasket 53 at the drive shaft 52 to form multiple sealing protections at the connection part, operation part and inlet part of the housing 1, thereby improving the overall sealing reliability and environmental adaptability of the explosion-proof switch.

[0034] In this embodiment, the inlet sealing assembly 6 further includes a baffle 62, which is located inside the sealing ring 61.

[0035] Specifically, the baffle 62 is located inside the inlet channel and is fitted to its inner wall. The center of the baffle 62 has a through hole for the cable to pass through, so that the cable can pass through under the guidance of the baffle 62 when entering the receiving cavity 11. When the clamping nut 63 is tightened and an axial clamping force is applied to the sealing ring 61, the sealing ring 61 undergoes radial deformation during the compression process. One side is squeezed by the clamping nut 63, and the other side is limited by the baffle 62, thereby preventing the sealing ring 61 from excessively displacing or flipping in the direction of the receiving cavity 11, so that the sealing ring 61 maintains a stable stress state in the inlet channel. In addition, the baffle 62 forms a mechanical barrier structure inside the sealing ring 61, so that even if the sealing ring 61 is locally under uneven pressure, external media such as dust and water vapor are difficult to directly enter the receiving cavity 11 along the cable gap, thereby further enhancing the sealing reliability of the inlet sealing assembly 6.

[0036] As a preferred embodiment of the above, it also includes a mounting structure 7 for fixing the explosion-proof control switch body 3; The mounting structure 7 includes a fixed support column 71 and a fixed base plate 72; The fixed support column 71 is connected to the inner wall of the housing 1, the fixed base plate 72 is connected to the fixed support column 71, and the explosion-proof control switch body 3 is fixed on the fixed base plate 72.

[0037] In this embodiment, based on the aforementioned explosion-proof switch structure, an installation structure 7 for fixing the explosion-proof control switch body 3 is also provided. The installation structure 7 is disposed within the receiving cavity 11 formed by the housing 1 and the cover 2, and is used to support and fix the explosion-proof control switch body 3. The installation structure 7 includes a fixing support column 71 and a fixing base plate 72. The fixing support column 71 is connected to the inner wall of the housing 1 and extends along the inner wall of the housing 1 into the receiving cavity 11. The number of fixing support columns 71 can be set according to the size and weight of the explosion-proof control switch body 3. The fixing base plate 72 is connected to the fixing support column 71 and is spaced apart from the inner wall of the housing 1, so that the explosion-proof control switch body 3 can be installed in a predetermined position within the receiving cavity 11. The explosion-proof control switch body 3 is fixed to the fixing base plate 72. Through the above structural cooperation, the explosion-proof control switch body 3 forms an independent and stable installation unit inside the housing 1, avoiding displacement or shaking due to vibration or impact during use, thereby improving the installation stability of the explosion-proof control switch body 3 and contributing to the improvement of the overall reliability and service life of the explosion-proof switch.

[0038] The connection between the fixed support column 71 and the inner wall of the housing 1, and between the fixed support column 71 and the fixed base plate 72, is a detachable threaded connection. Specifically, the inner wall of the housing 1 has an internal threaded hole at the installation position corresponding to the fixed support column 71, and one end of the fixed support column 71 has an external threaded section that mates with the internal threaded hole. By screwing the fixed support column 71 into the internal threaded hole of the inner wall of the housing 1, a stable connection is achieved between the fixed support column 71 and the inner wall of the housing 1. The other end of the fixed support column 71 also has an external threaded section, and the fixed base plate 72 has an internal threaded hole that mates with it. By screwing the connection, the fixed base plate 72 is installed on the fixed support column 71, thereby forming a connection between the inner wall of the housing 1, the fixed support column 71, and the fixed base plate. The installation structure 7 is connected in sequence. During assembly, the fixed support 71 can be installed on the inner wall of the housing 1 first, then the fixed base plate 72 can be installed on the fixed support 71, and finally the explosion-proof control switch body 3 can be fixed on the fixed base plate 72. When it is necessary to repair or replace the explosion-proof control switch body 3, the fixed base plate 72 and the fixed support 71 can be disassembled in sequence by rotating in the opposite direction to achieve partial or complete disassembly of the installation structure 7. Through the above-mentioned detachable threaded connection method, the installation structure 7 can ensure the installation stability of the explosion-proof control switch body 3 while having good assembly flexibility and maintenance convenience, which is conducive to improving the adaptability and practicality of the explosion-proof switch in production assembly, on-site maintenance and later replacement process.

[0039] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof switch, characterized in that, include: Housing, cover, explosion-proof control switch body, and elastic seals; The housing and the cover together form a receiving cavity, and the explosion-proof control switch body is disposed within the receiving cavity; The housing and the cover are connected by a mutually mating external thread section and an internal thread section, forming a threaded explosion-proof mating surface; The elastic seal is sandwiched between the opposite end faces of the threaded explosion-proof mating surfaces of the housing and the cover; The threaded explosion-proof mating surface is used to provide a flame extinguishing channel that meets the explosion-proof requirements, and the elastic seal is used to achieve environmental sealing at the threaded explosion-proof mating surface.

2. The explosion-proof switch according to claim 1, characterized in that, The shell cover is provided with a convex ring, and the surface of the convex ring is provided with the external thread section; The root of the convex ring is provided with a first groove, and the elastic seal is disposed in the first groove; The inner wall of the housing is provided with an internal thread section that mates with the external thread section.

3. The explosion-proof switch according to claim 1, characterized in that, The housing is provided with a convex ring, and the surface of the convex ring is provided with the external thread section; The root of the convex ring is provided with a first groove, and the elastic seal is disposed in the first groove; The inner wall of the shell cover is provided with an internal thread section that mates with the external thread section.

4. The explosion-proof switch according to claim 1, characterized in that, It also includes an operating component, which includes a handle and a drive shaft; The handle is located on the outside of the housing cover; The drive shaft passes through the cover, one end of the drive shaft is connected to the handle, and the other end extends into the receiving cavity and is connected to the explosion-proof control switch body. A shaft sealing gasket is provided between the drive shaft and the housing cover.

5. The explosion-proof switch according to claim 4, characterized in that, The shaft seal gasket has a disc-shaped structure, including an inner ring and an outer ring, and an annular groove located between the inner ring and the outer ring; The bottom of the cover is provided with an annular flange, which is inserted into the annular groove to position and fix the shaft seal gasket.

6. The explosion-proof switch according to claim 1, characterized in that, It also includes at least one inlet sealing assembly; The housing sidewall is provided with a cable inlet channel; The inlet sealing assembly is disposed within the inlet channel and includes a sealing ring and a clamping nut; The clamping nut is threadedly connected to the inlet channel and is used to clamp the sealing ring.

7. The explosion-proof switch according to claim 6, characterized in that, The inlet sealing assembly also includes a baffle plate located inside the sealing ring.

8. The explosion-proof switch according to claim 1, characterized in that, It also includes a mounting structure for fixing the explosion-proof control switch body; The installation structure includes a fixed support column and a fixed base plate; The fixed support is connected to the inner wall of the housing, the fixed base plate is connected to the fixed support, and the explosion-proof control switch body is fixed to the fixed base plate.

9. The explosion-proof switch according to claim 8, characterized in that, The fixed support column and the inner wall of the housing, as well as the fixed support column and the fixed base plate, are detachable threaded connections.

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