CN214543460U - Explosion-proof junction box - Google Patents
Explosion-proof junction box Download PDFInfo
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- CN214543460U CN214543460U CN202121028813.3U CN202121028813U CN214543460U CN 214543460 U CN214543460 U CN 214543460U CN 202121028813 U CN202121028813 U CN 202121028813U CN 214543460 U CN214543460 U CN 214543460U
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- box
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- explosion
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- junction box
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Abstract
The utility model discloses an explosion-proof terminal box mainly relates to explosion-proof field. Comprises a box body, a box cover and a wiring terminal; the side wall of the box body is provided with a plurality of threading ports, the box cover is detachably fixed on the box body, and the wiring terminal is arranged in the box body; a sealing joint is arranged in the threading opening, a sealing washer is arranged between the inner end of the sealing joint and the threading opening, and a sealing screw is arranged in the sealing joint. A deoxidizer is arranged between the box body and the box cover. And a grounding bolt is arranged in the box body. The beneficial effects of the utility model reside in that: the sealing joint can be sealed by the redundant threading openings of the explosion-proof junction box under the condition that the sealing joint is not detached, so that the sealing joint is prevented from being lost or mistakenly used, and a good sealing effect is kept. The original shape of the sealing washer is kept, and the sealing effect of the sealing washer is ensured. The content of combustion-supporting gas in the junction box can be reduced, the combustible gas entering the junction box after opening the junction box is prevented from being ignited, and the explosion-proof effect of the junction box is further improved.
Description
Technical Field
The utility model relates to an explosion-proof field specifically is an explosion-proof terminal box.
Background
Explosion-proof junction boxes are often used in explosive hazard areas such as mines, natural gas stations, for branching or wiring. The explosion-proof junction box commonly used in engineering is mainly explosion-proof: through introducing sealedly to the terminal box, separate terminal box inside and external environment, prevent that inside spark from lighting explosive gas, and then play explosion-proof. For the multi-interface explosion-proof junction box, when the electric equipment transfers or changes the circuit, the spare wire port is generally sealed by the corresponding explosion-proof plug, and for different junction boxes, the specifications of the explosion-proof plug and the sealing joint are different. In practical application, the sealing joints are often mismatched and lost, the sealing gaskets are not supported inside, and the explosion-proof plug excessively extrudes the sealing gaskets to prevent the sealing gaskets from being used.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an explosion-proof terminal box, it can be under the condition that does not pull down sealing joint, seals the unnecessary through wires mouth of explosion-proof terminal box. And the ignition of combustible gas entering from the opening of the junction box can be prevented.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
an explosion-proof junction box comprises a box body, a box cover and a wiring terminal; the side wall of the box body is provided with a plurality of threading ports, the box cover is detachably fixed on the box body, and the wiring terminal is arranged in the box body; a sealing joint is arranged in the threading opening, a sealing washer is arranged between the inner end of the sealing joint and the threading opening, and a sealing screw is arranged in the sealing joint.
A deoxidizer is arranged between the box body and the box cover.
The sealing screw penetrates through the sealing joint to the box body, and the contact surface of the tail part of the sealing screw and the sealing washer is a smooth cylinder.
The deoxidizer is arranged on the inner surface of the box cover.
The deoxidizer is an iron powder deoxidizer.
And a grounding bolt is arranged in the box body.
Contrast prior art, the beneficial effects of the utility model reside in that:
the junction box can seal the redundant threading openings of the explosion-proof junction box under the condition that the sealing joints are not detached, prevent the sealing joints from being lost or mistakenly used, and keep good sealing effect. The original shape of the sealing washer is kept, and the sealing effect of the sealing washer is ensured. The content of combustion-supporting gas in the junction box can be reduced, the combustible gas entering the junction box after opening the junction box is prevented from being ignited, and the explosion-proof effect of the junction box is further improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Figure 2 is a schematic view of the inner surface of the middle box cover of the utility model.
Reference numerals shown in the drawings:
1. a box body; 2. a box cover; 3. a wiring terminal; 4. a threading opening; 5. sealing the joint; 6. a sealing gasket; 7. a seal screw; 8. iron powder deoxidizer; 9. and a grounding bolt.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
The utility model relates to an explosion-proof junction box, the main structure of which comprises a box body 1, a box cover 2 and a connecting terminal 3; the side wall of the box body 1 is provided with a plurality of threading openings 4, threading is arranged on the side wall of the box body 1, and external wires can be threaded into the junction box. Lid 2 can be dismantled and fix on box body 1, can sealed fixed between lid 2 and the box body 1, and wiring and inside separate with the external world. The wiring terminal 3 is arranged in the box body 1, and the wiring terminal 3 is arranged in the box body 1 and can be used for rigidly connecting the wires so as to prevent the wires from generating sparks due to poor contact; be equipped with sealing joint 5 in the through wires mouth 4, be equipped with seal ring 6 between 5 inner and the through wires mouth 4 of sealing joint, sealing joint 5 and seal ring 6 establish in 4 departments of through wires mouth, can press from both sides tight seal ring 6 through sealing joint 5, make seal ring 6 deformation, seal between wire and the through wires mouth 4, prevent that the outside gas from passing through the through wires mouth 4 and getting into in the terminal box. The sealing joint 5 is provided with the sealing screw 7, the sealing screw 7 is arranged inside the sealing joint 5, the threading opening 4 of the explosion-proof junction box can be sealed under the condition that the sealing joint 5 is not detached, the sealing joint 5 is prevented from being lost or mistakenly used, and a good sealing effect is kept.
Be equipped with the deoxidier between box body 1 and lid 2, the burning of inflammable gas needs oxygen, and the deoxidier is established at wiring and inside, can reduce the oxygen content in the terminal box. Due to the reduction of the oxidizer, even if a spark occurs in the junction box, the combustible gas is not ignited to explode.
The sealing screw 7 penetrates through the sealing joint 5 to the inside of the junction box, and the sealing screw 7 penetrates through the sealing joint 5 to support the sealing washer 6, so that the sealing washer 6 is prevented from being excessively deformed. The contact surface of the tail part of the sealing screw 7 and the sealing washer 6 is a smooth cylinder, the surface of the tail part of the sealing screw 7 is smooth, and the sealing washer 6 can be prevented from being damaged by the threads of the sealing screw 7.
The deoxidant is arranged on the inner surface of the box cover 2, and the deoxidant is arranged on the inner surface of the junction box, so that the junction box has a larger surface area and improves the deoxidization capability of the deoxidant under the condition of not influencing an internal circuit.
The deoxidier is iron powder deoxidier 8, because the ore deposit is interior to humidity higher, uses iron powder deoxidier 8, can enough reduce oxygen content, prevents the explosion, can reduce the humidity in the terminal box again, prevents that inside from corroding to rust. .
The inside earth bolt 9 that is equipped with of box body 1, earth bolt 9 sets for inside the casing, can play the effect of wiring protection to the junction box.
The using method comprises the following steps:
firstly, opening the box cover 2 of the junction box, detaching the wiring terminal 3, the sealing joint 5 and the sealing washer 6, correspondingly and sequentially sleeving the sealing joint 5 and the sealing washer 6 which need to be used on the wire, and enabling the wire to pass through the wiring port. Then, the lead wire is fastened to the terminal 3 corresponding to the wiring and the ground wire is connected to the ground bolt 9, and the terminal 3 is fixed inside the case 1 by a screw. Then the lead is tightened, so that no lead with redundant length is arranged in the junction box, the sealing joint 5 is screwed into the threading opening 4 to clamp the sealing washer 6, and the lead and the threading opening 4 are sealed; for the redundant threading opening 4, the sealing screw 7 is screwed into the sealing joint 5 to be clamped, the sealing washer 6 is sleeved at the tail part of the sealing screw 7, and then the sealing joint 5 is screwed into the threading opening 4 to be fastened. And finally, fastening the box cover 2 on the box body 1 by using screws to finish the installation.
Claims (6)
1. An explosion-proof junction box comprises a box body (1), a box cover (2) and a wiring terminal (3); the side wall of the box body (1) is provided with a plurality of threading openings (4), the box cover (2) is detachably fixed on the box body (1), and the wiring terminal (3) is arranged in the box body (1); the method is characterized in that: be equipped with sealing joint (5) in threading mouth (4), be equipped with seal ring (6) between sealing joint (5) inner and threading mouth (4), be equipped with sealing screw (7) in sealing joint (5).
2. The explosion-proof junction box of claim 1, wherein: a deoxidizer is arranged between the box body (1) and the box cover (2).
3. The explosion-proof junction box of claim 1, wherein: the sealing screw (7) penetrates through the sealing joint (5) to the box body (1), and the contact surface of the tail part of the sealing screw (7) and the sealing washer (6) is a smooth cylinder.
4. The explosion-proof junction box of claim 2, wherein: the deoxidizer is arranged on the inner surface of the box cover (2).
5. The explosion-proof junction box of claim 2, wherein: the deoxidizer is an iron powder deoxidizer (8).
6. The explosion-proof junction box of claim 1, wherein: and a grounding bolt (9) is arranged in the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121028813.3U CN214543460U (en) | 2021-05-13 | 2021-05-13 | Explosion-proof junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121028813.3U CN214543460U (en) | 2021-05-13 | 2021-05-13 | Explosion-proof junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214543460U true CN214543460U (en) | 2021-10-29 |
Family
ID=78284469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121028813.3U Active CN214543460U (en) | 2021-05-13 | 2021-05-13 | Explosion-proof junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214543460U (en) |
-
2021
- 2021-05-13 CN CN202121028813.3U patent/CN214543460U/en active Active
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