CN220156163U - Explosion-proof junction box for electric control cabinet - Google Patents

Abstract

The utility model discloses an explosion-proof junction box for an electric cabinet, which comprises a box body and a cover plate, wherein a junction terminal is arranged in the box body, junction holes are symmetrically formed in the side parts of the box body, a limit sleeve is arranged outside the junction holes, a conical bushing is arranged in the limit sleeve, a conical sealing gasket is inserted in the conical bushing, one side of the conical sealing gasket is provided with a compression ring, the inner wall of the conical sealing gasket is tightly attached to the outer wall of a cable, the outer wall of the conical sealing gasket is tightly attached to the conical bushing, the compression ring is tightly pressed by using a limit nut, so that the sealing performance of the junction holes is guaranteed, the box body and the cover plate are in staggered insertion sealing fit, and then are fixed by bolts, so that the sealing performance between the box body and the cover plate is effectively guaranteed, the whole sealing explosion-proof performance of the junction box is comprehensively guaranteed, the structure is simple, the sealing effect is good, and the explosion-proof junction box is convenient to overhaul and disassemble.

Description

Explosion-proof junction box for electric control cabinet

Technical Field

The utility model relates to the technical field of explosion-proof junction boxes, in particular to an explosion-proof junction box for an electric control cabinet.

Background

The junction box is an interface for connecting an internal power supply and an external power supply, is also a member for protecting electric elements in the junction box, and can generate strong ignition sources such as sparks, electric arcs or high temperature in the junction box during working to ignite explosive dust or gas in the junction box so as to further cause larger safety accidents.

Therefore, the junction box needs to be sealed sufficiently, and in order to achieve the problem in the prior art, the main problem to be solved is that the wire inlet and outlet openings for the wires are sealed after the junction terminals are all installed and after the whole junction box is assembled, glue is filled at the wire inlet and outlet openings and the like and the junction box is solidified. The method is more used at present, but has certain defects that when the junction box is overhauled and disassembled, the glue filling position needs to be reprocessed, namely the glue filling position needs to be heated to melt, and after the overhaul is finished, the glue filling is carried out again, so that the method is very troublesome.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an explosion-proof junction box for an electric control cabinet, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides an explosion-proof terminal box for automatically controlled cabinet, includes box body and apron, install binding post in the box body, the wiring hole has been seted up to box body lateral part symmetry, the wiring hole outside is equipped with the stop collar, be provided with the taper bush in the stop collar, taper bush interpolation is equipped with taper seal ring, taper seal ring one side is provided with the clamping ring, the stop collar outside is equipped with the screw thread seat, threaded seat upper spin has connect stop nut, stop nut one end welding has solid fixed ring, gu fixed ring pastes with the clamping ring mutually, the ladder groove has been seted up to the box body upper end, the apron lower terminal surface corresponds the ladder groove position and is equipped with spacing fender along, spacing fender is provided with the sealing strip along the lower extreme, correspond on the four corners position of box body and apron and support, lead to bolt assembly connection between the support.

The lower end face of the cover plate is provided with an outer baffle edge, a limiting seat is arranged on the outer baffle edge, a threaded hole is formed in the side wall of the box body, corresponding to the position of the limiting seat, of the box body, a screw is mounted on the limiting seat, and one end of the screw is connected with the threaded hole in an assembling mode.

And a sealing rubber strip is arranged between the limiting baffle edge and the outer baffle edge, and the sealing rubber strip is attached to the upper end edge of the box body.

Annular flexible contact sheets are arranged on the inner ring surface and the outer ring surface of the conical sealing gasket.

Limiting convex blocks are symmetrically arranged on two sides of the pressing ring, and key grooves are formed in positions, corresponding to the limiting convex blocks, of the limiting sleeve.

The bottom of the box body is provided with a back plate, the back plate is provided with an assembly hole, and the assembly hole is used for fixing the box body.

Advantageous effects

The utility model provides an explosion-proof junction box for an electric control cabinet. The beneficial effects are as follows: this explosion-proof terminal box for automatically controlled cabinet sets up the wiring hole with box body lateral part, set up the stop collar on the wiring hole position, pass clamping ring and taper seal packing ring with cable one end back stretch into in the box body through the stop collar, taper seal packing ring inserts in the stop collar, taper seal packing ring inner wall is hugged closely with the cable outer wall this moment, taper seal packing ring outer wall is hugged closely with taper bush, utilize stop nut to compress tightly the clamping ring, thereby guarantee the sealing performance of wiring hole position, adopt dislocation grafting sealing fit between box body and the apron, assist in bolt fastening again, can effectively guarantee the sealing performance between box body and the apron, and then comprehensively guarantee the holistic sealing explosion-proof performance of terminal box, and a structure is simple, and sealed effectual, and the easy access dismouting.

Drawings

Fig. 1 is a schematic diagram of a front view cross-section structure of an explosion-proof junction box for an electric control cabinet.

Fig. 2 is a schematic top view of an explosion-proof junction box for an electric control cabinet according to the present utility model.

Fig. 3 is a schematic diagram of a partial enlarged structure of a wiring hole of an explosion-proof junction box for an electric control cabinet according to the present utility model.

Fig. 4 is a schematic side view of the press ring according to the present utility model.

Fig. 5 is a schematic cross-sectional view of a conical sealing gasket according to the present utility model.

Fig. 6 is a schematic view of a partially enlarged structure of fig. 1 according to the present utility model.

In the figure: 1. a case body; 2. a cover plate; 3. a connection terminal; 4. a wiring hole; 5. a limit sleeve; 6. taper bush; 7. a conical sealing gasket; 8. a compression ring; 9. a screw seat; 10. a limit nut; 11. a fixing ring; 12. limiting stop edges; 13. a sealing strip; 14. a support; 15. a bolt; 16. an outer stop edge; 17. a limit seat; 18. a screw; 19. a sealing rubber strip; 20. an annular flexible contact sheet; 21. a limit bump; 22. a back plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.

Examples: as can be seen from fig. 1-6 of the specification, the connection terminal 3 is installed in the box body 1, the connection hole 4 is symmetrically provided at the side of the box body 1, the stop collar 5 is provided at the outside of the connection hole 4, the taper bush 6 is provided in the stop collar 5, the taper gasket 7 is internally inserted into the taper bush 6, the annular flexible contact piece 20 is provided on the inner and outer annular surfaces of the taper gasket 7, one side of the taper gasket 7 is provided with the press ring 8, the two sides of the press ring 8 are symmetrically provided with the stop lugs 21, the position of the stop collar 5 corresponding to the stop lugs 21 is provided with a key slot, the outside of the stop collar 5 is provided with the screw seat 9, the screw seat 9 is screwed with the stop nut 10, one end of the stop nut 10 is welded with the fixed ring 11, the fixed ring 11 is attached to the press ring 8, the upper end of the box body 1 is provided with the stepped groove, the lower end surface of the cover plate 2 is provided with the stop edge 12 corresponding to the stepped groove position, the lower end of the stop edge 12 is provided with the sealing strip 13, the four corners of the box body 1 and the cover plate 2 are correspondingly provided with the supports 14, the supports 14 are assembled and connected through bolts 15, when in use, one end of a cable passes through the press ring 8 and the conical sealing washer 7 and then stretches into the box body 1 through the limit sleeve 5, the conical sealing washer 7 is inserted into the limit sleeve 5, at the moment, the annular flexible contact piece 20 on the inner wall of the conical sealing washer 7 is tightly attached to the outer wall of the cable, the annular flexible contact piece 20 on the outer wall of the conical sealing washer 7 is tightly attached to the conical bushing 6, the press ring 8 is tightly pressed by the limit nuts 10, the two sides of the press ring 8 are symmetrically provided with limit lugs 21, the limit lugs 21 are inserted into key grooves on the limit sleeve 5, the press ring 8 can be effectively prevented from rotating, the cable rotation in the locking process is avoided, the sealing performance of the position of the wiring hole 4 is effectively ensured, the box body 1 and the cover plate 2 are in staggered plug-in sealing fit, the bolt 15 is used for fixing, so that the sealing performance between the box body 1 and the cover plate 2 can be effectively ensured, the overall sealing explosion-proof performance of the junction box is comprehensively ensured, the structure is simple, the sealing effect is good, and the maintenance and the disassembly are convenient.

In the concrete implementation process, the lower end face of the cover plate 2 is provided with an outer baffle edge 16, a limiting seat 17 is arranged on the outer baffle edge 16, a threaded hole is formed in the position, corresponding to the limiting seat 17, of the side wall of the box body 1, a screw 18 is arranged on the limiting seat 17, one end of the screw 18 is assembled and connected with the threaded hole, a sealing rubber strip 19 is arranged between the limiting baffle edge 12 and the outer baffle edge 16, the sealing rubber strip 19 is attached to the upper end edge of the box body 1, a misplacement splicing sealing fit is adopted between the box body 1 and the cover plate 2, and the sealing performance between the box body 1 and the cover plate 2 can be effectively ensured by being fixed by the aid of bolts 15, so that the overall sealing explosion-proof performance of the junction box is comprehensively ensured.

In a specific implementation process, the bottom of the box body 1 is provided with the back plate 22, the back plate 22 is provided with an assembly hole, and the assembly hole is used for fixing the box body 1, so that the box body 1 is conveniently installed at a design position in the electric control cabinet.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an explosion-proof terminal box for automatically controlled cabinet, includes box body and apron, its characterized in that, install binding post in the box body, the wiring hole has been seted up to box body lateral part symmetry, the wiring hole outside is equipped with the stop collar, be provided with the taper bush in the stop collar, taper sealing washer is equipped with in the taper bush interpolation, taper sealing washer one side is provided with the clamping ring, the stop collar outside is equipped with the screw thread seat, threaded seat has connect limit nut soon, limit nut one end welding has solid fixed ring, gu fixed ring pastes with the clamping ring mutually, the ladder groove has been seted up to the box body upper end, the apron lower extreme face corresponds the ladder groove position and is equipped with spacing fender along, spacing fender is provided with the sealing strip along the lower extreme, correspond on the four corners position of box body and apron and be provided with the support, pass through bolt assembly connection between the support.

2. The explosion-proof junction box for an electric control cabinet according to claim 1, wherein an outer baffle edge is arranged on the lower end face of the cover plate, a limit seat is arranged on the outer baffle edge, a threaded hole is formed in the side wall of the box body corresponding to the limit seat, a screw is mounted on the limit seat, and one end of the screw is assembled and connected with the threaded hole.

3. The explosion-proof junction box for the electric control cabinet according to claim 2, wherein a sealing rubber strip is arranged between the limiting stop edge and the outer stop edge, and the sealing rubber strip is attached to the upper end edge of the box body.

4. The explosion-proof junction box for an electric cabinet according to claim 1, wherein annular flexible contact pieces are arranged on the inner and outer annular surfaces of the conical sealing gasket.

5. The explosion-proof junction box for an electric cabinet according to claim 1, wherein limiting lugs are symmetrically arranged on two sides of the pressing ring, and key grooves are formed in positions, corresponding to the limiting lugs, on the limiting sleeve.

6. The explosion-proof junction box for an electric control cabinet according to claim 1, wherein a back plate is arranged at the bottom of the box body, and an assembly hole is arranged on the back plate and used for fixing the box body.