Special explosion-proof power supply device for dust environment

Abstract

The invention relates to the technical field of anti-explosion power supplies, in particular to an anti-explosion power supply device special for a dust environment, which comprises an anti-explosion power supply body, two wiring sleeves are arranged on the surface of the anti-explosion power supply body and used for protecting a wire body connected with a wiring end of the anti-explosion power supply body, and one end of each wiring sleeve is in threaded connection with an extension sleeve. A nut is fixed at the end part of the extension sleeve, a reserved groove is formed in the other end of the wiring sleeve, and a plurality of clamping handles are inserted into the surface of the reserved groove; the beneficial effects are that through the design of the clamping handle and the limiting ring, the wire body can be stably clamped after being inserted into the wiring port. And the limiting ring extrudes and pushes the clamping handle along the inclined surface, so that the clamping handle clamps the rubber clamping block between the clamping handle and the wire body, and anti-falling limiting of the wire body is realized. The design not only improves the connection stability of the wire body, but also reduces the safety risk caused by the falling of the wire body.

Description

Technical Field

[0001] The present invention relates to the field of explosion-proof power supplies, and particularly to an explosion-proof power supply device dedicated for a dust environment. Background Art

[0002] In a dust environment, the explosion-proof performance of electrical equipment is of crucial importance. As a key component in an electrical system, the safety and reliability of the wiring terminals of an explosion-proof power supply device directly affect the stable operation of the entire system. Traditional explosion-proof power supply devices have deficiencies in the protection of wiring terminals. Especially in a dust environment, the wire body is prone to falling off from the wiring terminal due to vibration or external force, resulting in the failure of electrical connection and even triggering safety accidents.

[0003] To solve this problem, some improved explosion-proof power supply devices have emerged on the market. They enhance the protection and clamping ability of the wire body by increasing the length of the wiring sleeve and using elastic materials. However, these devices still have some deficiencies in practical applications, such as unstable clamping force, complex operation, and difficult maintenance.

[0004] Therefore, the present invention proposes an explosion-proof power supply device dedicated for a dust environment. This device has an innovative design in the protection of wiring terminals. By screwing on an extension sleeve, setting a silica gel sleeve, and using structures such as a clamping handle and a limiting ring, it realizes the stable clamping and effective protection of the wire body. At the same time, it simplifies the operation process and improves the reliability and usability of the device. Summary of the Invention

[0005] The purpose of the present invention is to provide an explosion-proof power supply device dedicated for a dust environment to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An explosion-proof power supply device dedicated for a dust environment, including an explosion-proof power supply body. Two wiring sleeves are provided on the surface of the explosion-proof power supply body for protecting the wire body connected to the wiring terminal of the explosion-proof power supply body. One end of the wiring sleeve is screwed with an extension sleeve, and a nut is fixed at the end of the extension sleeve. A plurality of clamping handles are inserted on the surface of a reserved groove at the other end of the wiring sleeve, and a limiting ring is sleeved inside the reserved groove. After the limiting ring pushes the clamping handle, the clamping handle advances into the interior of the wiring sleeve.

[0007] Preferably, the inner ring opening of the wiring sleeve is provided with internal threads, and the outer wall of the extension sleeve is provided with external threads, and the external threads and the internal threads are in fit connection.

[0008] Preferably, a silica gel sleeve is inserted into the nut. The silica gel sleeve is a "T"-shaped round tube, and a convex ring is integrally formed on the inner ring surface of the silica gel sleeve.

[0009] Preferably, the reserved groove is an annular groove, and a plurality of sockets are formed on the surface of the reserved groove. The sockets correspond to the clamping handles one by one, and the clamping handles are inserted into the sockets. A perforation is formed on the surface of the clamping handle, and a stop bar is inserted into the interior of the perforation. Both ends of the stop bar are respectively fixed on two parallel side walls of the socket. A rubber support block is fixed on the surface of the stop bar, and one end of the rubber support block is fixed on the surface of the perforation.

[0010] Preferably, a through hole is formed on the surface of the rubber support block. When the limiting ring does not block the clamping handle, the rubber support block is in an initial state, and one end of the clamping handle extends out of the socket.

[0011] Preferably, one end of the clamping handle is provided with an inclined surface, and an isosceles trapezoidal block is integrally formed at the other end of the clamping handle. A rubber clamping block is fixed on the surface of the isosceles trapezoidal block, and the rubber clamping block is in the shape of an isosceles trapezoidal plate structure.

[0012] Preferably, anti-slip strips are fixed on the outer ring surface of the limiting ring. There are a plurality of anti-slip strips, and the plurality of anti-slip strips are arranged equidistantly and equally in size along the outer ring surface of the limiting ring.

[0013] Preferably, a clamping groove is formed at one end of the limiting ring, an introduction ring is fixed at one end of the reserved groove, a rubber sleeve is sleeved at one end of the introduction ring, the clamping groove is an annular groove with a circular opening at the break, the introduction ring is in the structure of a circular ring with a circular cross-section, and the diameter of the circular surface of the introduction ring is larger than the width of the groove opening of the clamping groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] For the explosion-proof power supply device for a dust environment proposed by the present invention, by screwing the extension sleeve, the protection length of the wiring sleeve for the connection wire body is increased, effectively preventing the erosion and damage of dust to the wire body. At the same time, the inner ring surface of the silicone sleeve encloses the nut, which not only realizes the elastic clamping of the wire body but also avoids the scraping of the nut on the wire body, further improving the protection effect.

[0016] The design of the clamping handle and the limiting ring enables the wire body to be stably clamped after being inserted into the wiring port. The limiting ring squeezes the clamping handle along the inclined surface, so that the clamping handle clamps the rubber clamping block between the clamping handle and the wire body, realizing the anti-detachment limit of the wire body. This design not only improves the connection stability of the wire body but also reduces the safety risk caused by the detachment of the wire body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a front view of the structure of the present invention;

[0019] Figure 3 is Figure 2 a sectional view of the structure at A-A in

[0020] Figure 4 For Figure 3 The enlarged schematic view of the structure at position A in

[0021] Figure 5 The schematic view of the clamping handle structure of the present invention;

[0022] Figure 6 The schematic view of the limit sleeve structure of the present invention;

[0023] Figure 7 The schematic view of the connection structure of the extension sleeve and the nut of the present invention;

[0024] Figure 8 The schematic view of the wiring sleeve structure of the present invention.

[0025] In the figure: the explosion-proof power supply body 1, the wiring sleeve 2, the extension sleeve 3, the nut 4, the silica gel sleeve 5, the reserved groove 6, the socket 7, the clamping handle 8, the perforation 9, the stop bar 10, the rubber support block 11, the through hole 12, the inclined surface 13, the rubber clamping block 14, the limit ring 15, the anti-slip strip 16, the card slot 17, the guiding ring 18, the rubber sleeve 19. Specific embodiments

[0026] In order to clearly and completely describe the purpose, technical solution and advantages of the present invention, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Please refer to Figures 1-8 , the present invention provides a technical solution: an explosion-proof power supply device for a dust environment, including an explosion-proof power supply body 1. Two wiring sleeves 2 are provided on the surface of the explosion-proof power supply body 1 for protecting the wire bodies connected to the wiring ends of the explosion-proof power supply body 1. One end of the wiring sleeve 2 is screwed with an extension sleeve 3. The inner ring of the wiring sleeve 2 is provided with internal threads, and the outer wall of the extension sleeve 3 is provided with external threads. The external threads and the internal threads are connected in cooperation. A nut 4 is fixed at the end of the extension sleeve 3, and a silica gel sleeve 5 is inserted into the nut 4. The silica gel sleeve 5 is in the shape of a "T"-shaped round tube, and a convex ring is integrally formed on the inner ring surface of the silica gel sleeve 5. The reason for screwing the extension sleeve 3 at the end of the wiring sleeve 2 is to increase the protection length of the wiring sleeve 2 for the connecting wire bodies, and at the same time, the silica gel sleeve 5 surrounds the inner ring surface of the nut 4 to realize the elastic clamping of the wire bodies and avoid the nut 4 from scratching the wire bodies.

[0028] The other end of the wiring sleeve 2 is provided with a reserved groove 6. A plurality of clamping handles 8 are inserted on the surface of the reserved groove 6. A limiting ring 15 is sleeved inside the reserved groove 6. After the limiting ring 15 pushes against the clamping handle 8, the clamping handle 8 advances into the interior of the wiring sleeve 2; the reserved groove 6 is an annular groove, and a plurality of sockets 7 are opened on the surface of the reserved groove 6. The sockets 7 and the clamping handles 8 correspond one by one. The clamping handles 8 are inserted into the sockets 7. A perforation 9 is opened on the surface of the clamping handle 8. A blocking strip 10 is inserted into the interior of the perforation 9. Both ends of the blocking strip 10 are respectively fixed on two parallel side walls of the socket 7. A rubber support block 11 is fixed on the surface of the blocking strip 10. One end of the rubber support block 11 is fixed on the surface of the perforation 9; a through opening 12 is opened on the surface of the rubber support block 11. When the limiting ring 15 does not block the clamping handle 8, the rubber support block 11 is in an initial state, and one end of the clamping handle 8 extends out of the socket 7; one end of the clamping handle 8 is provided with an inclined surface, and an isosceles trapezoidal block is integrally formed at the other end of the clamping handle 8. A rubber clamping block 14 is fixed on the surface of the isosceles trapezoidal block. The rubber clamping block 14 is in the shape of an isosceles trapezoidal plate structure.

[0029] After the wire body is inserted into the wiring port of the explosion-proof power supply body 1, the limiting ring 15 is toggled to slide along the reserved groove 6. The limiting ring 15 squeezes the clamping handle 8 along the inclined surface 13. The clamping handle 8 squeezes the rubber support block 11 to deform, and the clamping handle 8 clamps the rubber clamping block 14 between the clamping handle 8 and the wire body, realizing the anti-disengagement limit of the wire body, that is, when the wire body is pulled from the wiring sleeve 2, the wire body will not fall off from the wiring port of the explosion-proof power supply body 1; when it is necessary to cancel the clamping of the wire body by the clamping handle 8, only the limiting ring 15 needs to be pulled back. When the limiting ring 15 no longer blocks the clamping handle 8, the rubber support block 11 rebounds to pull the clamping handle 8 back.

[0030] Anti-slip strips 16 are fixed on the outer ring surface of the limiting ring 15. There are a plurality of anti-slip strips 16, and the plurality of anti-slip strips 16 are arranged equidistantly and equally sized along the outer ring surface of the limiting ring 15; a clamping groove 17 is opened at one end of the limiting ring 15. An introduction ring 18 is fixed at one end of the reserved groove 6. A rubber sleeve 19 is sleeved at one end of the introduction ring 18. The clamping groove 17 is an annular groove with a circular opening at the break, and the introduction ring 18 is a ring structure with a circular cross-section. The diameter of the circular surface of the introduction ring 18 is greater than the width of the groove opening of the clamping groove 17.

[0031] In order to realize the stability when the limiting ring 15 blocks the clamping handle 8, when the limiting ring 15 is pushed to one end of the reserved groove 6, the introduction ring 18 and the rubber sleeve 19 are pushed into the clamping groove 17 to realize the limit of the limiting ring 15.

[0032] The usage process of fixing and releasing the wire body at the wiring end in the explosion-proof power supply device for dust environment is as follows:

[0033] Screw the extension sleeve 3 to one end of the wiring sleeve 2 to ensure that the external thread and the internal thread fit tightly. Insert the silica gel sleeve 5 inside the nut 4 to ensure that the convex ring of the silica gel sleeve fits tightly with the inner ring surface of the nut 4 to provide elastic clamping. Pass the wire body to be connected through the silica gel sleeve 5 and insert it into the wiring port of the explosion-proof power supply body 1. Adjust the position of the wire body to ensure that the wire body is near the reserved groove 6 for subsequent operations. Hold the limit ring 15 and slide it along the reserved groove 6 to gradually approach the clamping handle 8. During the sliding process of the limit ring 15, its edge will push along the inclined surface of the clamping handle 8, causing the clamping handle 8 to move inside the wiring sleeve 2. The movement of the clamping handle 8 drives the rubber clamping block 14 to clamp between the wire body and the clamping handle 8 to achieve the preliminary fixation of the wire body. When the limit ring 15 is pushed to one end of the reserved groove 6, ensure that the guiding ring 18 and the rubber sleeve 19 are aligned with the clamping groove 17. Push forcefully to make the guiding ring 18 and the rubber sleeve 19 completely enter the clamping groove 17 to lock the position of the limit ring 15 and ensure that the wire body is stably clamped. Gently pull out the rubber sleeve 19 to make the guiding ring 18 withdraw from the clamping groove 17. Hold the limit ring 15 and slide it in the opposite direction until it completely leaves the area of the clamping handle 8. As the limit ring 15 moves away, the clamping handle 8 gradually moves back under the resilience of the rubber support block 11. The clamping force of the rubber clamping block 14 on the wire body weakens, and at this time, the wire body can be easily pulled out from the wiring port of the explosion-proof power supply body 1.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special explosion-proof power supply device for dust environment, comprising an explosion-proof power supply body 1, the surface of which is provided with two wiring sleeves 2 for protecting the wires connected to the wiring terminals of the explosion-proof power supply body 1, characterized in that: An extension sleeve 3 is threadedly connected to one end of the wiring sleeve 2, a nut 4 is fixed to the end of the extension sleeve 3, a reserved groove 6 is provided at the other end of the wiring sleeve 2, a plurality of clamping handles 8 are inserted into the surface of the reserved groove 6, a limiting ring 15 is sleeved inside the reserved groove 6, and after the limiting ring 15 pushes the clamping handle 8, the clamping handle 8 is pushed into the interior of the wiring sleeve 2.

2. The explosion-proof power supply device for dust environment according to claim 1, characterized in that: The inner ring opening of the wiring sleeve 2 is provided with an internal thread, and the outer wall of the extension sleeve 3 is provided with an external thread, and the external thread and the internal thread are matched and connected.

3. The explosion-proof power supply device for dust environment according to claim 1, characterized in that: A silicone sleeve 5 is inserted into the interior of the nut 4. The silicone sleeve 5 is a "T"-shaped circular tube, and a convex ring is integrally formed on the inner ring surface of the silicone sleeve 5.

4. The explosion-proof power supply device for dust environment according to claim 1, characterized in that: The reserved groove 6 is an annular groove, and a plurality of sockets 7 are provided on the surface of the reserved groove 6. The sockets 7 correspond to the clamping handles 8 one by one. The clamping handles 8 are inserted into the sockets 7. A through hole 9 is provided on the surface of the clamping handle 8. A baffle 10 is inserted into the inside of the through hole 9. The two ends of the baffle 10 are respectively fixed on two parallel side walls of the socket 7. A rubber support block 11 is fixed on the surface of the baffle 10, and one end of the rubber support block 11 is fixed to the surface of the through hole 9.

5. The explosion-proof power supply device for dust environment according to claim 4, characterized in that: The surface of the rubber support block 11 is provided with a through hole 12 . When the limiting ring 15 does not block the clamping handle 8 , the rubber support block 11 is in an initial state, and one end of the clamping handle 8 extends out of the socket 7 .

6. The explosion-proof power supply device for dust environment according to claim 1, characterized in that: One end of the clamping handle 8 is provided with an inclined surface, and the other end of the clamping handle 8 is integrally formed with an isosceles trapezoidal block, on the surface of which a rubber clamping block 14 is fixed, and the rubber clamping block 14 is an isosceles trapezoidal plate-shaped structure.

7. The explosion-proof power supply device for dust environment according to claim 1, characterized in that: The outer ring surface of the limiting ring 15 is fixed with an anti-slip strip 16 , and a plurality of anti-slip strips 16 are provided. The plurality of anti-slip strips 16 are arranged and distributed along the outer ring surface of the limiting ring 15 at equal distances and in equal sizes.

8. The explosion-proof power supply device for dust environment according to claim 1, characterized in that: A slot 17 is formed at one end of the limit ring 15, an introduction ring 18 is fixed at one end of the reserved groove 6, a rubber sleeve 19 is sleeved at one end of the introduction ring 18, the slot 17 is an annular groove with a circular opening, the introduction ring 18 is a circular ring structure with a circular surface in cross section, and the circular surface diameter of the introduction ring 18 is greater than the slot width of the slot 17.

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