CN215870628U

CN215870628U - Durable explosion-proof junction box

Info

Publication number: CN215870628U
Application number: CN202122154044.8U
Authority: CN
Inventors: 李岑琳; 易勇; 钟付良; 张�杰; 张红; 刘尧太
Original assignee: Chengdu Xinyang Energy Technology Co ltd
Current assignee: Chengdu Xinyang Energy Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-18
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to the field of explosion-proof junction boxes, in particular to a durable explosion-proof junction box which comprises an explosion-proof box body, wherein the bottom surface of the inner wall of the explosion-proof box body is fixedly connected with a plug-in type wiring terminal, the edge of the top of the explosion-proof box body is fixedly connected with a threaded ring, the top of the threaded ring is movably lapped with a sealing ring, the top of the threaded ring is movably provided with a box cover, and the bottom of the box cover is provided with a mounting groove. This kind of lasting durable explosion-proof terminal box, carry out preliminary waterproof dustproof isolation to the pipeline outer wall through waterproof circle, the tight pipe that rises is under the threaded connection of location screwed pipe and connecting pipe, to translation in the nested step, and receive deformation shrinkage under the restraint of nested step diameter, make its inner wall closely laminate with the pipeline outer wall, the waterproof pipe of sponge material absorbs water, can absorb the steam inflation, carry out last shutoff to the gap of pipeline outer wall, moreover, the steam generator is simple in structure and has good waterproof performance, through the double-deck screw thread installation of threaded circle and mounting groove, the installation sealing degree has been improved.

Description

Durable explosion-proof junction box

Technical Field

The utility model relates to the field of explosion-proof junction boxes, in particular to a durable explosion-proof junction box.

Background

The explosion-proof junction box works in an explosion gas environment and is often used in flammable and explosive environments such as petrochemical industry and the like, the existing explosion-proof junction box is not good in sealing performance, water vapor easily enters the junction box and is easily damaged, external dangerous gas reaches a certain concentration after entering the junction box, and if an electric arc box is generated on an internal wiring board, ignition is easily generated in the electric arc box, and explosion accidents are easily caused.

The following problems in the prior art are not well solved: 1. most of the existing explosion-proof junction boxes adopt common sealing rings to seal the outer wall of a pipeline, the sealing effect is not good, and dust and inflammable gas easily enter the explosion-proof junction box through a gap between the pipeline and a box body, so that dangerous accidents are caused; 2. the general body of current explosion-proof terminal box and closing cap adopt ordinary screw-thread fit for the screw thread outside seeps water easily, leads to the drop of threading box waterproof performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a durable explosion-proof junction box, which solves the problems of poor connection sealing of an installation pipeline and the explosion-proof junction box and easy water seepage of common threads in the background technology. In order to achieve the purpose, the utility model provides the following technical scheme: a durable explosion-proof junction box comprises an explosion-proof box body, wherein the bottom surface of the inner wall of the explosion-proof box body is fixedly connected with a plug-in type wiring terminal, the edge of the top of the explosion-proof box body is fixedly connected with a threaded ring, the top of the threaded ring is movably lapped with a sealing ring, the top of the threaded ring is movably provided with a box cover, and the bottom of the box cover is provided with a mounting groove;

the equal fixedly connected with connecting pipe in both sides of explosion-proof box body, and the inner wall of connecting pipe has seted up nested step, waterproof pipe and the tight pipe that rises have been cup jointed in the connecting pipe activity, and the screw has cup jointed the location screwed pipe on the connecting pipe, one side of location screwed pipe is fixed nested has waterproof circle, the through-hole that runs through to its both sides and communicate in the connecting pipe is seted up respectively to one side that explosion-proof box body inner wall is relative.

Preferably, the inner wall and the outer wall of the thread ring are respectively provided with a matched mounting thread, and one side opposite to the inner wall of the mounting groove is respectively provided with an internal thread and an external thread matched with the two mounting threads.

Preferably, the sealing ring is movably nested in the mounting groove, and the waterproof pipe is made of water-absorbing sponge.

Preferably, the tensioning tube is made of flexible insulating rubber, and five shrinkage grooves penetrating through the inner wall of the tensioning tube are radially formed in the outer wall of the tensioning tube at equal intervals.

Preferably, the side section of the nesting step is of a taper pipe structure, and the side section of the tensioning pipe is matched with the nesting step.

Preferably, the through holes, the waterproof pipes, the tensioning pipes and the waterproof rings are overlapped in central axis, and the two connecting pipes are symmetrically arranged on two sides of the explosion-proof box body by taking the central line of the front surface of the explosion-proof box body as an axis.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the outer wall of the pipeline is subjected to primary waterproof and dustproof isolation through the waterproof ring, the tension pipe is in threaded connection with the connecting pipe through the positioning solenoid, moves horizontally towards the inside of the nesting step and deforms and contracts under the constraint of the diameter of the nesting step, so that the inner wall of the tension pipe is tightly attached to the outer wall of the pipeline, the tension pipe is further waterproof and dustproof, the waterproof pipe made of the water-absorbing sponge material can absorb water vapor to expand, and the gap of the outer wall of the pipeline is finally plugged, so that the structure is simple and the waterproof performance is excellent.

According to the utility model, the installation tightness is improved through the double-layer thread installation of the thread ring and the installation groove, and the water outside the box cover is effectively blocked by matching with the sealing ring nested in the installation groove, and the disassembly and the assembly are convenient.

Drawings

FIG. 1 is a perspective cross-sectional view of the structure of the present invention;

FIG. 2 is a front cross-sectional view of the structure of the present invention;

fig. 3 is a perspective view of the tension tube of the present invention.

In the figure: 1. an explosion-proof box body; 2. a plug-in type wiring terminal; 3. a thread ring; 4. a seal ring; 5. a box cover; 6. mounting grooves; 7. a connecting pipe; 8. nesting steps; 9. a waterproof pipe; 10. a tensioning tube; 11. positioning a solenoid; 12. a waterproof ring; 13. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by workers skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a durable explosion-proof junction box comprises an explosion-proof box body 1, wherein the bottom surface of the inner wall of the explosion-proof box body 1 is fixedly connected with a plug-in type wiring terminal 2, the edge of the top of the explosion-proof box body 1 is fixedly connected with a threaded ring 3, the top of the threaded ring 3 is movably lapped with a sealing ring 4, the top of the threaded ring 3 is movably provided with a box cover 5, and the bottom of the box cover 5 is provided with a mounting groove 6;

the equal fixedly connected with connecting pipe 7 in both sides of explosion-proof box body 1, and nested step 8 has been seted up to the inner wall of connecting pipe 7, waterproof pipe 9 and tight 10 that rises have been cup jointed in the activity of connecting pipe 7, and the screw has cup jointed location solenoid 11 on the connecting pipe 7, one side of location solenoid 11 is fixed nested has waterproof circle 12, one side that explosion-proof box body 1 inner wall is relative is seted up respectively and is run through to its both sides and with the connecting pipe 7 in the through-hole 13 of intercommunication, carry out preliminary waterproof dustproof isolation to the pipeline outer wall through waterproof circle 12.

In this embodiment, as shown in fig. 1 and 3, the inner wall and the outer wall of the thread ring 3 are respectively provided with the matched mounting threads, the inner thread and the outer thread matched with the two mounting threads are respectively provided on the opposite side of the inner wall of the mounting groove 6, the double-layer thread installation through the thread ring 3 and the mounting groove 6 improves the mounting sealing degree, and the sealing ring 4 nested in the mounting groove 6 is matched to effectively block the water outside the box cover 5, and the assembly and disassembly are convenient.

In this embodiment, as shown in fig. 1 and 3, the sealing ring 4 is movably nested in the mounting groove 6, the waterproof tube 9 is made of water-absorbing sponge, the waterproof tube 9 made of water-absorbing sponge can absorb water vapor expansion, and finally plugs the gap of the outer wall of the pipeline, and the waterproof pipe is simple in structure and has excellent waterproof performance.

In this embodiment, as shown in fig. 1, 2 and 3, the tension tube 10 is made of flexible insulating rubber, and five shrinkage grooves penetrating through the inner wall of the tension tube 10 are radially formed on the outer wall of the tension tube 10 at equal intervals.

In this embodiment, as shown in fig. 1, 2, and 3, the side cross section of the nesting step 8 is a taper pipe structure, and the side cross section of the tension pipe 10 is matched with the nesting step 8 and is deformed and contracted under the constraint of the diameter of the nesting step 8, so that the inner wall of the tension pipe is tightly attached to the outer wall of the pipeline, and further, the tension pipe is waterproof and dustproof.

In this embodiment, as shown in fig. 1 and 3, the central axes of the through hole 13, the waterproof tube 9, the tension tube 10 and the waterproof ring 12 are overlapped, and the two connecting tubes 7 are disposed at two sides of the explosion-proof box body 1 symmetrically with the central line of the front surface thereof as an axis.

The use method and the advantages of the utility model are as follows: when the durable explosion-proof junction box is used for installing pipelines, the working process is as follows:

as shown in fig. 1, 2 and 3, firstly, two pipelines are respectively inserted into the waterproof ring 12, the tension tube 10 and the waterproof tube 9 at two sides, and penetrate into the explosion-proof box body 1 through the through hole 13 to be connected with the plug-in type connecting terminal 2, after the positioning screw tube 11 is screwed down, the tensioning tube 10 is translated into the nesting step 8 under the threaded connection of the positioning screw tube 11 and the connecting tube 7, and is deformed and contracted under the restriction of the diameter of the nesting step 8, so that the inner wall of the nesting step is tightly attached to the outer wall of the pipeline, further the water and dust are prevented, the waterproof pipe 9 made of the water-absorbing sponge material can absorb the water vapor expansion, carry out final shutoff to the gap of pipeline outer wall, at last with lid 5 through mounting groove 6 with 3 threaded connection of screw ring can, double-deck screw thread installation has improved the installation leakproofness, nested sealing washer 4 in the cooperation mounting groove 6 makes the outside water of lid 5 by effectual blockking, and easy dismounting.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a durable explosion-proof terminal box, includes explosion-proof box body (1), its characterized in that: the bottom surface of the inner wall of the explosion-proof box body (1) is fixedly connected with a plug-in type wiring terminal (2), the edge of the top of the explosion-proof box body (1) is fixedly connected with a threaded ring (3), the top of the threaded ring (3) is movably lapped with a sealing ring (4), the top of the threaded ring (3) is movably provided with a box cover (5), and the bottom of the box cover (5) is provided with a mounting groove (6);

the equal fixedly connected with connecting pipe (7) in both sides of explosion-proof box body (1), and the inner wall of connecting pipe (7) has seted up nested step (8), waterproof pipe (9) and tight pipe (10) that rises have been cup jointed in connecting pipe (7) internalization, and the screw thread has cup jointed location solenoid (11) on connecting pipe (7), one side of location solenoid (11) is fixed nested has waterproof ring (12), one side that explosion-proof box body (1) inner wall is relative is seted up respectively and is run through to its both sides and with through-hole (13) of connecting pipe (7) interior intercommunication.

2. A durable explosion-proof electrical connector as defined in claim 1, wherein: the inner wall and the outer wall of the thread ring (3) are respectively provided with matched mounting threads, and one side, opposite to the inner wall of the mounting groove (6), of the inner wall is respectively provided with an internal thread and an external thread which are matched with the two mounting threads.

3. A durable explosion-proof electrical connector as defined in claim 1, wherein: the sealing ring (4) is movably nested in the mounting groove (6), and the waterproof pipe (9) is made of water-absorbing sponge.

4. A durable explosion-proof electrical connector as defined in claim 1, wherein: the tension tube (10) is made of flexible insulating rubber, and five shrinkage grooves penetrating through the tension tube (10) to the inner wall are radially formed in the outer wall of the tension tube at equal intervals.

5. A durable explosion-proof electrical connector as defined in claim 1, wherein: the side section of the nesting step (8) is of a taper pipe structure, and the side section of the tensioning pipe (10) is matched with the nesting step (8).

6. A durable explosion-proof electrical connector as defined in claim 1, wherein: the central axes of the through hole (13), the waterproof pipe (9), the tension pipe (10) and the waterproof ring (12) are superposed, and the connecting pipes (7) are arranged on two sides of the explosion-proof box body (1) by taking the central line on the front side as axial symmetry.