Explosion-proof converter housing structure

Abstract

The utility model discloses an explosion -proof converter casing structure, including explosion -proof casing, back cover and front cover, the utility model discloses adopt back cover, explosion -proof casing subassembly and front cover subassembly three section structure composition, adopt explosion -proof terminal and wiring terminal in explosion -proof casing subassembly and carry out electrical input, output connection, and explosion -proof terminal and wiring terminal with explosion -proof casing adopt A / B epoxy pouring seal, and front cover display window adopts explosion -proof glass, and with sealant, ring and compression ring structure seal, back cover, explosion -proof casing subassembly and front cover subassembly between installation has the O type ring, and are connected together through screw thread, and design has the safety catch and locking screw structure, prevent back cover and front cover subassembly's loosening, thereby solved the converter casing can use in the explosion -proof environment long -term, safe and reliable, and the installation operation is simple, and the stable performance.

Description

Technical Field

[0001] This utility model relates to the field of converter technology, specifically to an explosion-proof converter housing structure. Background Technology

[0002] The working principle of the explosion-proof converter housing is to use a reasonable mechanical structure design to seal the cavity for electrical installation and meet the explosion-proof requirements. This allows the cavity to completely isolate and enclose the internal electrical structure, enabling it to be used safely in explosion-proof environments without affecting the output and the transmission of output signals.

[0003] Existing explosion-proof converter housings have the following defects: 1. Most existing explosion-proof converter housings do not meet the requirements for explosion protection in terms of structural design, posing safety hazards. Furthermore, the overall design of the explosion-proof converter housing is relatively complex, making the installation and operation of its electrical structure inconvenient. 2. Existing explosion-proof converters are internally sealed, and the gas generated during an explosion can easily cause the housing to rupture, posing safety hazards. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or existing explosion-proof converter housing structure, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an explosion-proof converter housing structure, which consists of three sections: a rear cover, an explosion-proof housing assembly, and a front cover assembly. The explosion-proof housing assembly uses explosion-proof terminals and wiring terminals for electrical input and output connections, and these terminals are sealed to the explosion-proof housing with A / B epoxy potting compound. The front cover display window uses explosion-proof glass and is sealed with sealant, a ring, and a clamping ring structure. O-rings are installed between the rear cover, the explosion-proof housing assembly, and the front cover assembly, and they are connected together by threads. A safety buckle and locking screw structure are designed to prevent the rear cover and front cover assembly from loosening. This solves the problem of ensuring the converter housing can be used safely and reliably in explosion-proof environments for extended periods, while also providing simple installation, operation, and stable performance.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] An explosion-proof converter housing structure, comprising:

[0009] An explosion-proof housing is cylindrical with an internal cavity. The housing has openings at both ends that communicate with the internal cavity. Multiple explosion-proof terminals are installed on the rear wall of the partition and distributed on the inner wall of the partition. An explosion-proof cable connector is installed on the outer wall of the explosion-proof housing. A wiring terminal is installed at the bottom of the explosion-proof housing. A grounding bolt is also installed at the bottom of the explosion-proof housing. The wiring terminal and the explosion-proof terminal are filled with A / B epoxy potting compound.

[0010] The rear cover is installed at the tail end of the explosion-proof housing and is used to seal the rear opening of the explosion-proof housing.

[0011] The front cover is installed at the front end of the explosion-proof housing and is used to seal the opening at the front end of the explosion-proof housing.

[0012] In a preferred embodiment of the explosion-proof converter housing structure described in this utility model, the outer wall of the tail end of the explosion-proof housing is provided with a first external thread, the inner wall of the front end of the rear cover is provided with a first internal thread that mates with the first external thread, the first internal thread is connected to the first external thread, the outer wall of the tail end of the explosion-proof housing is provided with a first screw hole, a safety buckle is installed at the front end of the rear cover, the tail end of the explosion-proof housing is fitted inside the safety buckle, and is connected to the explosion-proof housing by a fastening screw.

[0013] As a preferred embodiment of the explosion-proof converter housing structure described in this utility model, the outer wall of the front end of the explosion-proof housing is provided with a second external thread, the tail end of the front cover is provided with a connecting sleeve, the inner wall of the connecting sleeve is provided with a second internal thread that mates with the second external thread, the second internal thread is connected to the second external thread, and the outer wall of the front end of the explosion-proof housing is provided with a second screw hole for connecting and fixing with the connecting sleeve.

[0014] In a preferred embodiment of the explosion-proof converter housing structure described in this utility model, sealant is injected into the inner side of the front end step of the front cover, explosion-proof glass is placed on the inner wall of the sealant, a ring is provided on the inner wall of the explosion-proof glass, and a compression ring is provided on the inner wall of the ring.

[0015] As a preferred embodiment of the explosion-proof converter housing structure described in this utility model, a sliding sleeve is installed at the rear end of the front cover, the sliding sleeve is slidably fitted at the front end of the connecting sleeve, an extension plate is installed at the rear end of the sliding sleeve, and multiple guide holes are opened on the outer wall of the extension plate.

[0016] In a preferred embodiment of the explosion-proof converter housing structure described in this utility model, a plurality of guide rods are installed on the inner wall of the connecting sleeve, the guide rods pass through the guide holes, a limiting plate is installed at the other end of the guide rod, the diameter of the limiting plate is larger than the diameter of the guide hole, and a spring is sleeved on the guide rod body.

[0017] Compared with existing technologies, this technology adopts a three-section structure consisting of a rear cover, an explosion-proof housing assembly, and a front cover assembly. The explosion-proof housing assembly uses explosion-proof terminals and wiring terminals for electrical input and output connections, and the explosion-proof terminals and wiring terminals are sealed to the explosion-proof housing with A / B epoxy potting compound. The display window of the front cover uses explosion-proof glass and is sealed with sealant, rings, and compression rings. O-rings are installed between the rear cover, the explosion-proof housing assembly, and the front cover assembly, and they are connected together by threads. A safety buckle and locking screw structure are designed to prevent the rear cover and front cover assembly from loosening. This solves the problem of the converter housing being able to be used for a long time in an explosion-proof environment, ensuring safety and reliability, and providing simple installation and operation with stable performance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is an overall structural diagram of an explosion-proof converter housing according to the present invention;

[0020] Figure 2 This is a structural diagram of an explosion-proof converter housing according to the present invention.

[0021] Figure 3 This is a side view of an explosion-proof converter housing structure according to the present invention.

[0022] Figure 4 This is a structural diagram of the front cover of an explosion-proof converter housing according to this utility model;

[0023] Figure 5 This is a three-dimensional cross-sectional view of the front cover of an explosion-proof converter housing structure according to this utility model. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] This utility model provides an explosion-proof converter housing structure, which consists of three sections: a rear cover, an explosion-proof housing assembly, and a front cover assembly. The explosion-proof housing assembly uses explosion-proof terminals and wiring terminals for electrical input and output connections, and these terminals are sealed to the explosion-proof housing with A / B epoxy potting compound. The front cover display window uses explosion-proof glass and is sealed with sealant, a ring, and a clamping ring structure. O-rings are installed between the rear cover, the explosion-proof housing assembly, and the front cover assembly, and they are connected together by threads. A safety buckle and locking screw structure are designed to prevent the rear cover and front cover assembly from loosening. This design ensures the converter housing can be used safely and reliably in explosion-proof environments for extended periods, while also providing simple installation, operation, and stable performance.

[0028] Example 1

[0029] This solution discloses an explosion-proof converter housing structure, mainly including an explosion-proof housing 100, a rear cover 200, and a front cover 300. The explosion-proof housing 100 is cylindrical and has an internal cavity, with openings at both ends that communicate with the internal cavity. Multiple explosion-proof terminals 120 are installed on the rear wall of the partition 110, and the explosion-proof terminals 120 are distributed on the inner wall of the partition 110. An explosion-proof cable connector 121 is installed on the outer wall of the explosion-proof housing 100, and a wiring terminal 130 and a grounding bolt 140 are installed at the bottom. The mounting positions of the wiring terminal 130 and the explosion-proof terminals 120 are filled with A / B epoxy potting compound 150. The rear cover 200 is installed at the tail end of the explosion-proof housing 100 to close the rear opening, and the front cover 300 is installed at the front end of the explosion-proof housing 100 to close the front opening.

[0030] Solution Analysis: From a structural design perspective, the inner cavity of the cylindrical explosion-proof housing 100 provides installation space for electrical components. The openings at both ends are closed by the rear cover 200 and the front cover 300, forming an independent explosion-proof cavity, meeting the core requirement of "cavity isolation and sealing" in explosion-proof environments. Explosion-proof terminals 120 are located on the rear wall of the partition 110 and are used for communication and power terminal connections. Wiring terminals 130 are located at the bottom and are used for sensor signal line connections. Both are encapsulated with A / B epoxy potting compound 150, utilizing the sealing properties of the potting compound to fill installation gaps and prevent the flow of gas and sparks between the cavity and the outside, achieving explosion-proof sealing of electrical connections. Explosion-proof cable connectors 121 are used for sealing when cables are introduced, preventing the gap between the cable and the housing from becoming a channel for explosion propagation. Grounding bolts 140 connect the housing to the ground, eliminating static electricity or leakage hazards and further improving safety. The three-section structure (explosion-proof housing + rear cover + front cover) simplifies the overall assembly process, with clear functional partitions for each component, facilitating the installation and maintenance of the electrical structure.

[0031] Technical Benefits: This structure meets explosion-proof requirements through a multi-layered sealing design (potting compound sealing, housing enclosure), effectively isolating internal electrical components from the external environment and preventing the spread of explosion risks. The functional zones for each terminal and interface are clearly defined, requiring no complex operations during installation. It solves the problems of insufficient explosion-proof performance and inconvenient installation in existing structures, enabling long-term stable use in explosion-proof environments and significantly improving safety and reliability.

[0032] Example 2

[0033] Based on Embodiment 1, this solution further includes: a first external thread 160 is provided on the outer wall of the tail end of the explosion-proof housing 100, and a first internal thread 210 is provided on the inner wall of the front end of the rear cover 200 to cooperate with the first external thread 160, and the two are connected by threads; a first screw hole 170 is opened on the outer wall of the tail end of the explosion-proof housing 100, a safety buckle 220 is installed on the front end of the rear cover 200, the tail end of the explosion-proof housing 100 is sleeved inside the safety buckle 220, and is connected and fixed to the first screw hole 170 by fastening screw 230.

[0034] Solution Analysis: From the perspective of the connection structure, the explosion-proof housing 100 and the rear cover 200 adopt a dual fixing method of "threaded connection + mechanical locking". The cooperation between the first external thread 160 and the first internal thread 210 achieves initial sealing through the spiral sealing principle. The tight fit between the threads reduces the gas leakage channel. The safety buckle 220 is sleeved on the tail end of the explosion-proof housing 100, and its inner wall fits against the outer wall of the housing. The fastening screw 230 passes through the safety buckle 220 and is screwed into the first screw hole 170 to form a mechanical limit. Friction and pre-tightening force are used to prevent the threaded connection from loosening due to vibration or pressure changes. In this structure, the threaded connection ensures the basic sealing, while the safety buckle 220 and the fastening screw 230 provide additional anti-loosening protection. In terms of position, the safety buckle 220 is located at the junction of the front end of the rear cover 200 and the tail end of the explosion-proof housing 100, forming a "wrap-like" reinforcement for the threaded connection.

[0035] Technical benefits: This design solves the problem of easy loosening of the rear cover leading to sealing failure in the existing structure. The sealing performance of the threaded connection and the anti-loosening performance of the safety buckle make the connection between the rear cover 200 and the explosion-proof housing 100 more stable. It can maintain the sealing even in the environment of vibration or pressure fluctuation, further improving the explosion-proof reliability of the housing. At the same time, it is easy to operate by only turning the screws and threads when disassembling and assembling.

[0036] Example 3

[0037] Based on Embodiment 2, this solution further includes: a second external thread 180 is provided on the outer wall of the front end of the explosion-proof housing 100, a connecting sleeve 310 is provided at the tail end of the front cover 300, and a second internal thread 311 is provided on the inner wall of the connecting sleeve 310 to cooperate with the second external thread 180, and the two are connected by threads; a second screw hole 190 is provided on the outer wall of the front end of the explosion-proof housing 100 for connecting and fixing with the connecting sleeve 310.

[0038] Solution Analysis: The connection between the front cover 300 and the explosion-proof housing 100 adopts a double fixing structure of "thread + screw" similar to that of the rear cover. The connecting sleeve 310 serves as the connecting component between the front cover 300 and the housing. The second internal thread 311 on its inner wall is screwed into the second external thread 180 at the front end of the explosion-proof housing 100 to form a preliminary seal and fixation. The second screw hole 190 is located on the outer wall of the front end of the explosion-proof housing 100. When the connecting sleeve 310 is screwed into place by the thread, the screw passes through the connecting sleeve 310 and is screwed into the second screw hole 190 to achieve mechanical reinforcement. From the positional relationship, the connecting sleeve 310 is fitted on the outer side of the front end of the explosion-proof housing 100. The threaded connection surface and the screw fixing point form a double constraint in both the radial and axial directions, which ensures a tight fit of the sealing surface and prevents the connecting sleeve 310 from rotating relative to the housing.

[0039] Technical benefits: This structure enables the connection between the front cover 300 and the explosion-proof housing 100 to have the same stability and sealing as the rear cover. The dual fixing method effectively prevents the front cover from loosening due to external force or internal pressure, ensuring that the front opening is reliably closed. At the same time, the threaded connection facilitates the disassembly and assembly of the front cover, making it suitable for the inspection and maintenance of internal electrical components, and solving the problems of complex front cover connection and unreliable sealing in the existing structure.

[0040] Example 4

[0041] Based on Embodiment 3, this solution further includes: a sealant 320 is injected into the inner side of the front step of the front cover 300, an explosion-proof glass 330 is placed on the inner wall of the sealant 320, a ring 340 is provided on the inner wall of the explosion-proof glass 330, and a compression ring 350 is provided on the inner wall of the ring 340.

[0042] Solution Analysis: The display window at the front of the front cover 300 adopts a multi-layer sealing structure. The sealant 320 on the inner side of the step achieves initial sealing by filling the gaps. Its fluidity can adapt to the tiny gaps between the step and the explosion-proof glass 330, forming an elastic sealing layer after curing. The explosion-proof glass 330 is located on the inner wall of the sealant 320, combining explosion-proof and light-transmitting functions. Its material strength can withstand the explosion pressure without breaking, preventing external sparks from entering or internal explosion propagation. The ring 340 fits against the inner wall of the explosion-proof glass 330, providing a force support point for the clamping ring 350. The clamping ring 350 presses the explosion-proof glass 330 tightly onto the sealant 320 by squeezing the ring 340, using mechanical force to enhance the sealing effect of the sealant, forming a double seal of "sealant + mechanical clamping". The components, from the outside to the inside, are sealant 320, explosion-proof glass 330, ring 340, and clamping ring 350, with tight fit and no loose gaps.

[0043] Technical benefits: This design solves the problem of insufficient sealing of the existing front cover display window or the inability to balance display and explosion protection. The combination of sealant and mechanical compression ensures the explosion protection performance of the window area. The explosion-proof glass 330 meets the explosion protection requirements without affecting the internal signal display. The overall structure is compact and reliably sealed, making it suitable for explosion-proof environments where it is necessary to observe the internal status.

[0044] Example 5

[0045] Based on embodiment 4, this solution further includes: a sliding sleeve 360 ​​is installed at the tail end of the front cover 300, the sliding sleeve 360 ​​is slidably fitted at the front end of the connecting sleeve 310, an extension plate 370 is installed at the tail end of the sliding sleeve 360, and multiple guide holes 371 are opened on the outer wall of the extension plate 370.

[0046] Solution Analysis: The sliding sleeve 360, as the basic component of the buffer structure, has an inner wall that fits with the outer wall of the front end of the connecting sleeve 310, allowing it to slide axially along the connecting sleeve 310. The extension plate 370 is fixed to the tail end of the sliding sleeve 360 ​​and moves synchronously with it. The guide hole 371 on its outer wall provides a through channel for the subsequent guide rod, ensuring that the sliding sleeve 360 ​​does not deviate during sliding. Positionally, the sliding sleeve 360 ​​is located at the junction of the tail end of the front cover 300 and the front end of the connecting sleeve 310. The extension plate 370 extends into the connecting sleeve 310, and the guide holes 371 are radially distributed along the extension plate 370, providing a guiding path for the force transmission of the buffer structure. This design uses sliding characteristics to transfer the force on the front cover 300 to the extension plate 370, preparing for subsequent spring buffering.

[0047] Technical benefits: This structure provides a movable buffer base for the shell to cope with the internal explosion pressure. The sliding characteristics of the sliding sleeve 360 ​​avoid the risk of rigid connection failure under pressure impact. The guide hole 371 ensures that the components do not shift during the buffering process, improves the shell's impact resistance, and solves the problem that existing structures are prone to breakage during explosion due to rigid connections.

[0048] Example 6

[0049] Based on embodiment 5, this solution further includes: multiple guide rods 312 are installed on the inner wall of the connecting sleeve 310, the guide rods 312 pass through the guide hole 371, a limiting plate 313 is installed at the other end of the guide rod 312, the diameter of the limiting plate 313 is larger than the diameter of the guide hole 371, and a spring 314 is sleeved on the body of the guide rod 312.

[0050] Solution Analysis: The guide rod 312 and guide hole 371 are fitted with a clearance to form a sliding guide mechanism, ensuring that the extension plate 370 moves smoothly along the axial direction as the sliding sleeve 360 ​​moves, avoiding structural jamming caused by lateral displacement. The spring 314 is sleeved on the guide rod 312, with one end abutting against the inner wall of the connecting sleeve 310 and the other end abutting against the side wall of the extension plate 370. When the internal explosion generates pressure that pushes the front cover 300, the sliding sleeve 360 ​​drives the extension plate 370 to compress the spring 314. The spring 314 absorbs the impact energy through elastic deformation, achieving pressure buffering. The limiting plate 313 has a diameter larger than the guide hole 371, which can prevent the extension plate 370 from falling off the guide rod 312 and ensure the integrity of the buffer structure. The components form a coordinated "guide-buffer-limit" mechanism, mechanically dispersing the explosive impact force.

[0051] Technical benefits: This structure effectively solves the problem that existing shells are prone to breakage during internal explosions. The buffering effect of the spring 314 can absorb most of the explosion pressure, the guide rod 312 ensures the stability of the buffering process, and the limiting plate 313 prevents parts from falling off, significantly improving the explosion resistance of the shell. Even if an internal explosion occurs, the shell can be prevented from breaking, reducing safety hazards.

[0052] Working principle: This solution mainly achieves the explosion-proof function through the synergistic mechanism of "sealing and isolation + structural reinforcement + buffer pressure relief". First, a three-section structure consisting of an explosion-proof housing 100, a rear cover 200, and a front cover 300 is adopted. A closed cavity is formed by threaded connections (first external thread 160 and first internal thread 210, second external thread 180 and second internal thread 311), with O-rings enhancing the basic sealing. Second, key interfaces (explosion-proof terminal 120, wiring terminal 130) are sealed with A / B epoxy potting compound 150 to prevent gas and sparks from propagating through gaps. Explosion-proof cable connector 121 ensures a seal at the cable entry point, and grounding bolt 140 eliminates static electricity hazards. Third, mechanical reinforcement using safety buckles 220, fastening screws 230, and second screw holes 190 prevents the rear cover 200 and front cover 300 from loosening due to vibration, ensuring sealing. Finally, when the front cover 300 is subjected to internal explosion pressure, the sliding sleeve 360 ​​drives the extension plate 370 to slide along the guide rod 312, compressing the spring 314. The elastic deformation of the spring 314 absorbs the impact energy, preventing the housing from cracking due to rigid stress. Meanwhile, the explosion-proof glass 330 of the front cover 300, under the action of sealant 320, ring 340 and compression ring 350, achieves explosion protection without affecting signal observation. The overall structure meets the explosion protection requirements while ensuring normal transmission of electrical signals.

[0053] The core innovations of this solution lie in: proposing a three-section (explosion-proof housing 100 + rear cover 200 + front cover 300) structural design, combined with threaded connections and potting compound sealing, which solves the problems of insufficient explosion-proof performance and complex installation of existing structures; through a dual anti-loosening mechanism of "threaded connection + safety buckle 220 / screw fixing", the problem of easy loosening of the rear cover 200 and front cover 300 leading to sealing failure is solved; a buffer structure of "guide rod 312 + spring 314 + sliding sleeve 360" is designed. For the first time, the principle of elastic buffering is applied to the converter housing, solving the problem of easy breakage of existing housings in the event of an internal explosion; at the same time, combining the explosion-proof glass 330 with multi-layer sealing (sealant 320 + ring 340 + compression ring 350) achieves a balance between display function and explosion-proof performance, providing a reliable solution for signal observation in explosion-proof environments.

[0054] The technical benefits of implementing this solution are as follows: This solution meets the long-term use requirements of explosion-proof environments. The three-section structure and multiple sealing design (potting compound, sealant, threaded connection) ensure reliable cavity sealing, effectively isolating internal electrical components from the external environment and preventing the spread of explosion risks. A dual anti-loosening mechanism (safety buckle, screws) ensures a secure connection between the rear and front covers, preventing loosening even under vibration, thus improving structural safety. The buffer structure (spring 314, guide rod 312) absorbs internal explosion pressure, preventing shell rupture and reducing safety hazards. The explosion-proof glass design of the front cover ensures explosion protection without affecting signal observation, and the overall structure is easy to disassemble and assemble, facilitating the maintenance of internal electrical components. Furthermore, the grounding bolt 140 further eliminates electrostatic risks, ensuring stable and reliable performance of the shell in complex explosion-proof environments.

[0055] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An explosion-proof converter housing structure, characterized in that, include: An explosion-proof housing (100) is cylindrical and has an internal cavity. The explosion-proof housing (100) is open at both ends and communicates with the internal cavity. An explosion-proof terminal (120) is installed on the rear wall of a partition (110). There are multiple explosion-proof terminals (120) distributed on the inner wall of the partition (110). An explosion-proof cable connector (121) is installed on the outer wall of the explosion-proof housing (100). A wiring terminal (130) is installed at the bottom of the explosion-proof housing (100). A grounding bolt (140) is also installed at the bottom of the explosion-proof housing (100). The wiring terminal (130) and the explosion-proof terminal (120) are filled with A / B epoxy potting compound (150). The rear cover (200) is installed at the tail end of the explosion-proof housing (100) and is used to seal the rear opening of the explosion-proof housing (100); A front cover (300) is installed at the front end of the explosion-proof housing (100) to seal the opening at the front end of the explosion-proof housing (100).

2. The explosion-proof converter housing structure according to claim 1, characterized in that, The outer wall of the tail end of the explosion-proof housing (100) is provided with a first external thread (160), and the inner wall of the front end of the rear cover (200) is provided with a first internal thread (210) that mates with the first external thread (160). The first internal thread (210) is connected to the first external thread (160). The outer wall of the tail end of the explosion-proof housing (100) is provided with a first screw hole (170). A safety buckle (220) is installed at the front end of the rear cover (200). The tail end of the explosion-proof housing (100) is fitted inside the safety buckle (220) and is connected to the explosion-proof housing (100) by a fastening screw (230).

3. The explosion-proof converter housing structure according to claim 2, characterized in that, The explosion-proof housing (100) has a second external thread (180) on its front outer wall, and a connecting sleeve (310) is provided at the rear end of the front cover (300). The connecting sleeve (310) has a second internal thread (311) on its inner wall that mates with the second external thread (180). The second internal thread (311) is connected to the second external thread (180). The explosion-proof housing (100) has a second screw hole (190) on its front outer wall for connecting and fixing with the connecting sleeve (310).

4. The explosion-proof converter housing structure according to claim 3, characterized in that, The front cover (300) has a sealant (320) injected into the inner side of the front step. An explosion-proof glass (330) is placed on the inner wall of the sealant (320). A ring (340) is provided on the inner wall of the explosion-proof glass (330). A compression ring (350) is provided on the inner wall of the ring (340).

5. The explosion-proof converter housing structure according to claim 4, characterized in that, The front cover (300) is equipped with a sliding sleeve (360) at its tail end. The sliding sleeve (360) is slidably mounted on the front end of the connecting sleeve (310). An extension plate (370) is installed at the tail end of the sliding sleeve (360). The outer wall of the extension plate (370) is provided with multiple guide holes (371).

6. The explosion-proof converter housing structure according to claim 5, characterized in that, The inner wall of the connecting sleeve (310) is equipped with a plurality of guide rods (312), the guide rods (312) pass through the guide hole (371), and a limit plate (313) is installed at the other end of the guide rod (312). The diameter of the limit plate (313) is larger than the diameter of the guide hole (371), and a spring (314) is sleeved on the body of the guide rod (312).

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