CN111432590A

CN111432590A - High-protection low-temperature-resistant explosion-proof box

Info

Publication number: CN111432590A
Application number: CN202010385187.7A
Authority: CN
Inventors: 林哲琳; 张乃月; 金晓鹏; 柯振炼; 张胜余; 任红福; 谢金汉; 曾云爱
Original assignee: China Helon Explosion Proof Electric Co ltd
Current assignee: China Helon Explosion Proof Electric Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-07-17
Anticipated expiration: 2040-05-09
Also published as: CN111432590B

Abstract

The invention discloses a high-protection low-temperature-resistant explosion-proof box which comprises a box body and a box cover, wherein a plurality of locking assemblies are arranged between the box body and the box cover, each locking assembly comprises a first limiting slot arranged in the box body, a second limiting slot arranged in the box cover and a limiting insert block which is simultaneously inserted into the first limiting slot and the second limiting slot and limits the separation of the first limiting slot and the second limiting slot, an installation ring groove is arranged on the end surface of the box body, a supporting block which moves back and forth along the opening direction of the box body is arranged in the installation ring groove in a sealing and sliding manner, the supporting block is limited by the installation ring groove to be separated from the supporting block, a sealed driving cavity for driving the supporting block to slide is formed between the supporting block and the installation ring groove, an air inlet channel for communicating the outside and the sealed driving cavity is arranged on the box body, a control element. The invention has the following advantages and effects: the invention has simple operation, excellent sealing performance and stronger compatibility.

Description

High-protection low-temperature-resistant explosion-proof box

Technical Field

The invention relates to the field of explosion prevention, in particular to a high-protection low-temperature-resistant explosion-proof box.

Background

The explosion-proof box is one kind of factory explosion-proof electrical equipment, can be used for protecting a controlled circuit from overload, short circuit and the like in an environment of explosive gas or combustible dust, can be used as a lighting (power) switch of each branch circuit (centralized control), and can also be additionally provided with leakage protection to ensure personal and equipment safety.

The explosion-proof box in the prior art comprises a box body, a box cover hinged to the box body and a locking bolt used for locking the box cover to cover the sealed box body, wherein the locking bolt penetrates through the box cover to be in threaded connection with the box body, and a plurality of locking bolts are arranged at intervals along the peripheral wall of the box cover. In the process of opening or closing the explosion-proof box, workers need to rotate the locking bolts one by one to complete the opening or closing operation of the explosion-proof box, so that the opening and closing operation of the conventional explosion-proof box is very complicated, time-consuming and labor-consuming; and the existing explosion-proof box also has the problem of poor sealing performance.

Disclosure of Invention

The invention aims to provide a high-protection low-temperature-resistant explosion-proof box which is simple and convenient to operate and has excellent sealing performance.

The technical purpose of the invention is realized by the following technical scheme: a high-protection low-temperature-resistant explosion-proof box comprises a box body and a box cover hinged to the box body, wherein a plurality of locking assemblies used for locking the box cover to cover a sealed box body are arranged between the box body and the box cover, each locking assembly comprises a first limit slot arranged on the box body and close to the opening position of the box body, a second limit slot arranged on the box cover and a limit insert block inserted into the first limit slot and the second limit slot and limiting the separation of the first limit slot and the second limit slot simultaneously, when the limit insert block is inserted into the first limit slot and the second limit slot simultaneously, the box cover covers the sealed box body and limits the separation of the first limit slot and the second limit slot, an installation ring groove surrounding the opening is arranged on the end surface of the box body, a supporting block reciprocating along the opening direction of the box body is arranged in a sealing and sliding manner in the installation ring groove, the supporting block is limited to be separated from the supporting block, and an airtight driving cavity used, be equipped with the external intake duct with airtight drive chamber of intercommunication on the box, be equipped with the control that is used for controlling its break-make on the intake duct, be equipped with in the mounting ring inslot and be used for supporting the first sealing washer of closely sealing the case lid by the kicking block drive.

By adopting the technical scheme, when the box cover is covered on the box body, the limiting insertion block is simultaneously inserted into the first limiting insertion groove and the second limiting insertion groove, and the separation of the box cover and the box body is limited by the cooperation among the limiting insertion block, the first limiting insertion groove and the second limiting insertion groove, so that the closed locking of the explosion-proof box is realized; and this kind of limit structure has increased the bearing area of power each other, can guarantee to cover between box and the case lid and close sealed structural strength. When the explosion-proof box is to be opened, the opening operation can be completed only by pulling out the limiting insertion block, so that the opening and closing operation of the explosion-proof box is more convenient.

According to the difference of external service environment, air is admitted into the airtight driving cavity through the air inlet channel, so that the pressure intensity in the airtight driving cavity is gradually increased to drive the supporting block to tightly abut the first sealing ring against the box cover, and the corresponding sealing grade of the explosion-proof box can be adjusted according to different service conditions, thereby ensuring the excellent sealing performance of the explosion-proof box.

Further setting the following steps: the locking assembly comprises two locking assemblies, wherein the two limiting insertion blocks are respectively a first limiting insertion block and a second limiting insertion block, the insertion direction of the first limiting insertion block is perpendicular to the insertion direction of the second limiting insertion block, and a locking pin used for limiting the movement of the first limiting insertion block and the second limiting insertion block is inserted in the first limiting insertion block and the second limiting insertion block.

Through adopting above-mentioned technical scheme, the setting of stop pin is fixed simultaneously to the spacing inserted block realization of first spacing inserted block and second, prevents that first spacing inserted block and the spacing inserted block of second break away from in first spacing slot and the spacing slot of second because of the accident, prevents that the accident from taking place, reducing the potential safety hazard that exists.

Further setting the following steps: including setting up in first spacing inserted block and supplying the locking pin to insert the through-hole of establishing and set up in the spacing inserted block of second and supply the locking pin to insert the recess of establishing, work as first spacing inserted block and the spacing inserted block of second are all inserted when locating first spacing slot and the spacing slot of second, through-hole and recess intercommunication and through-hole are located the recess top, the length of stop pin is less than the length that through-hole and recess add, the material of stop pin is iron.

Through adopting above-mentioned technical scheme, the stop pin injects the recess through the through-hole to realize fixing a position first spacing inserted block and the spacing inserted block of second, and length is less than the length that through-hole and recess add and can play hidden effect to the position of locking pin, thereby realizes the hidden locking to first spacing inserted block and the spacing inserted block of second, makes the position that non-relevant personnel are difficult to find the stop pin open the explosion-proof box, thereby has further promoted the security level of explosion-proof box. When the locking pin is to be taken out, a worker extends the magnet into the through hole, and the magnet adsorbs the locking pin to bring the locking pin out of the through hole.

Further setting the following steps: including setting up in installation annular both sides wall and being used for restricting the kicking block and breaking away from the barrier part of installation annular, be equipped with the extension that extends into between barrier part and the kicking block on the first sealing washer, first sealing washer supports tightly to be the sealing in the position of case lid, first sealing washer is equipped with inside sunken depressed part towards the one side of kicking block, be equipped with the bellying that extends into the depressed part on the kicking block, the bellying supports tightly in the case lid along with the kicking block with the sealing when kicking block drive extension supports tightly in the barrier part.

By adopting the technical scheme, when the airtight driving cavity drives the supporting block to move towards the direction of the box cover, the supporting block drives the extending part to tightly seal the blocking part and the protruding part drives the sealing part to tightly seal the box cover, so that the airtight driving cavity is sealed on the basis of ensuring the sealing performance of the box cover, and the leakage probability of the airtight driving cavity is further reduced.

Further setting the following steps: the improved box is characterized in that a step hole is formed in the box body, a plurality of modules which are spliced mutually and used for sealing the step hole are arranged on the step hole, a threading hole is formed in each module, and a fixing component which is matched with the step hole and used for fixing the modules is arranged in the box body.

By adopting the technical scheme, as which kind of electric appliances are installed in the explosion-proof box and which places are different from each other, a plurality of users can find that the wires can not pass through the holes of the explosion-proof box and enter and exit the explosion-proof box after the electric appliances are installed in the explosion-proof box. Therefore, through the modularized design, the user can adjust the position of the threading hole according to the threading position required by the user, and the compatibility of the explosion-proof box is further improved.

Further setting the following steps: the fixing member includes a fixing frame that holds the plurality of modules by pressure and a locking bolt that connects the fixing frame and the case.

Through adopting above-mentioned technical scheme, locking bolt drive fixed frame is held a plurality of modules together and is fixed in the ladder inslot to realize the fixed of a plurality of modules in the ladder inslot.

Further setting the following steps: and a plurality of reinforcing ribs are distributed in the box body.

Through adopting above-mentioned technical scheme, the setting of strengthening rib is used for promoting the structural strength of box.

Further setting the following steps: every the periphery wall of module all is equipped with the second sealing washer.

Through adopting above-mentioned technical scheme, the setting of second sealing washer ensures the leakproofness between the adjacent module.

In conclusion, the invention has the following beneficial effects: the invention has simple operation, excellent sealing performance and stronger compatibility.

Drawings

FIG. 1 is a perspective view of an embodiment;

FIG. 2 is a schematic structural diagram of an embodiment;

FIG. 3 is a partial exploded view of an embodiment;

FIG. 4 is a sectional view of the embodiment;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a cross-sectional view of another perspective of the embodiment;

FIG. 7 is an enlarged view of portion B of FIG. 6;

FIG. 8 is another partial exploded view of the embodiment;

fig. 9 is a schematic structural diagram of a module in the embodiment.

In the figure: 1. a box body; 2. a box cover; 3. a locking assembly; 31. a first limit slot; 32. a second limit slot; 33. a first limit insert block; 4. mounting a ring groove; 5. a support block; 6. sealing the driving cavity; 7. an air inlet channel; 8. a control member; 9. a first seal ring; 10. a second limit insert block; 11. a locking pin; 12. a through hole; 13. a groove; 14. a blocking portion; 15. an extension portion; 16. a sealing part; 17. a recessed portion; 18. a boss portion; 19. a stepped hole; 20. a module; 21. threading holes; 22. a fixing frame; 23. a locking bolt; 24. reinforcing ribs; 25. and a second seal ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 9, a high-protection low-temperature-resistant explosion-proof box comprises a box body 1 and a box cover 2 hinged to the box body 1 through a hinge, wherein a plurality of locking assemblies 3 for locking the box cover 2 to cover and seal the box body 1 are arranged between the box body 1 and the box cover 2. The locking assembly 3 comprises a first limiting slot 31 arranged on the end face of the box body 1, a second limiting slot 32 arranged on the end face of the box cover 2 and a limiting insertion block which is simultaneously inserted into the first limiting slot 31 and the second limiting slot 32 and limits the separation of the first limiting slot 31 and the second limiting slot 32, wherein the first limiting slot 31 and the second limiting slot 32 are dovetail grooves. When the limit insert block is inserted into the first limit slot 31 and the second limit slot 32 at the same time, the case cover 2 covers the sealed case body 1 and limits the separation of the two.

The number of the locking assemblies 3 is two, the limiting insertion blocks in the two locking assemblies 3 are respectively a first limiting insertion block 33 and a second limiting insertion block 10, and the insertion direction of the first limiting insertion block 33 is perpendicular to the insertion direction of the second limiting insertion block 10. The first limiting insertion block 33 is provided with a through hole 12, the second limiting insertion block 10 is provided with a groove 13, when the first limiting insertion block 33 and the second limiting insertion block 10 are inserted into the first limiting slot 31 and the second limiting slot 32, the through hole 12 is communicated with the groove 13, and the through hole 12 is positioned above the groove 13. A locking pin 11 for limiting the movement of the first limiting insert 33 and the second limiting insert 10 is inserted in the through hole 12 and the groove 13, the length of the locking pin 11 is smaller than the sum of the length of the through hole 12 and the length of the groove 13, and the locking pin 11 is made of iron.

Set up on the terminal surface of box 1 around in box 1 open-ended installation annular 4, installation annular 4 internal seal slides and is provided with along 1 opening of box towards reciprocating motion's

bracer

5, and 4 both sides walls of installation annular are integrative to be provided with the stop part 14 that is used for restricting bracer 5 to break away from installation annular 4, forms a airtight drive chamber 6 that is used for driving bracer 5 to slide between bracer 5 and the installation annular 4. An air inlet channel 7 communicated with the outside and the closed driving cavity 6 is formed in the box body 1, a control part 8 used for controlling the on-off of the air inlet channel 7 is installed on the air inlet channel 7, and the control part 8 is specifically a ball valve.

The installation ring groove 4 is internally provided with a first sealing ring 9 which is driven by the supporting block 5 to be used for abutting against the tightly sealed box cover 2, the first sealing ring 9 is provided with an extending part 15 extending into a space between the blocking part 14 and the supporting block 5, the part of the first sealing ring 9 abutting against the box cover 2 is a sealing part 16, one surface of the first sealing ring 9 facing the supporting block 5 is provided with an inward sunken depressed part 17, the supporting block 5 is integrally provided with a protruding part 18 extending into the depressed part 17, the supporting block 5 drives the extending part 15 to abut against the blocking part 14, meanwhile, the protruding part 18 abuts against the sealing part 16 along with the supporting block 5 against the box cover 2 to realize the dual-action sealing between the supporting block 5 and the blocking part 14 and between the protruding part 18 and the box cover 2.

Seted up shoulder hole 19 in the box 1, shoulder hole 19 can set up in the lateral wall or the bottom of box 1, is equipped with a plurality of mutual concatenations on shoulder hole 19 and is used for sealed shoulder hole 19's module 20, has seted up through wires hole 21 on the module 20, is equipped with the fixed component that cooperation shoulder hole 19 is used for fixed a plurality of modules 20 simultaneously in the box 1. The fixing member includes a fixing frame 22 for pressing the plurality of modules 20 and a locking bolt 23 for connecting the fixing frame 22 and the case 1, and the locking bolt 23 is screwed to the case 1 through the fixing frame 22. A plurality of reinforcing ribs 24 are fixedly distributed in the box body 1, and a second sealing ring 25 is fixedly arranged on the peripheral wall of each module 20.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a high protection low temperature resistant explosion-proof case, includes box (1) and articulates in case lid (2) of box (1), its characterized in that: the box body (1) and the box cover (2) are provided with a plurality of locking components (3) which are used for locking the box cover (2) to cover the sealed box body (1), each locking component (3) comprises a first limit slot (31) which is arranged on the box body (1) and is close to the opening position of the box body (1), a second limit slot (32) which is arranged on the box cover (2) and a limit insert block which is inserted into the first limit slot (31) and the second limit slot (32) and limits the separation of the first limit slot (31) and the second limit slot (32), when the limit insert block is inserted into the first limit slot (31) and the second limit slot (32) simultaneously, the box cover (2) covers the sealed box body (1) and limits the separation of the first limit slot and the second limit slot, an installation annular groove (4) which surrounds the opening of the box body (1) is arranged on the end surface of the box body (1), the installation annular groove (4) is internally sealed and slides and is provided, installation annular (4) restriction brace piece (5) break away from with it, form one between brace piece (5) and installation annular (4) and be used for driving airtight drive chamber (6) that brace piece (5) slided, be equipped with intake duct (7) of the external and airtight drive chamber (6) of intercommunication on box (1), be equipped with control (8) that are used for controlling its break-make on intake duct (7), be equipped with in installation annular (4) and be used for supporting first sealing washer (9) of closely sealed case lid (2) by brace piece (5) drive.

2. The high protection low temperature resistant explosion-proof tank of claim 1, wherein: the quantity of locking Assembly (3) is two, two spacing inserted block be first spacing inserted block (33) and spacing inserted block (10) of second respectively, the direction of establishing of inserting of first spacing inserted block (33) and the spacing inserted block (10) of second establish the direction mutually perpendicular, insert on first spacing inserted block (33) and the spacing inserted block (10) of second and be equipped with and be used for restricting both stop pin (11) that remove.

3. The high-protection low-temperature-resistant explosion-proof tank as claimed in claim 2, wherein: including setting up in first spacing inserted block (33) and supplying locking pin (11) to insert through-hole (12) of establishing and set up in second spacing inserted block (10) and supply locking pin (11) to insert recess (13) of establishing, work as first spacing inserted block (33) all inserts with second spacing inserted block (10) and locates when first spacing slot (31) and second spacing slot (32), through-hole (12) and recess (13) intercommunication and through-hole (12) are located recess (13) top, the length of locking pin (11) is less than the length that through-hole (12) and recess (13) add, the material of locking pin (11) is iron.

4. The high protection low temperature resistant explosion-proof tank of claim 1, wherein: including setting up in installation annular (4) both sides wall and being used for restricting stop (14) that bracer (5) break away from installation annular (4), be equipped with on first sealing washer (9) and extend into extension (15) between stop (14) and bracer (5), first sealing washer (9) are supported tightly and are sealed portion (16) in the position of case lid (2), one side of first sealing washer (9) towards bracer (5) is equipped with inside sunken depressed part (17), be equipped with on bracer (5) and extend into bellying (18) of depressed part (17), bellying (18) support tightly in case lid (2) along with bracer (5) with sealed portion (16) when bracer (5) drive extension (15) support tightly in stop (14).

5. The high protection low temperature resistant explosion-proof tank of claim 1, wherein: be equipped with shoulder hole (19) on box (1), be equipped with module (20) that a plurality of concatenations each other are used for sealed shoulder hole (19) on shoulder hole (19), be equipped with through wires hole (21) on module (20), be equipped with the fixed component that cooperation shoulder hole (19) are used for fixed a plurality of modules (20) in box (1).

6. The high-protection low-temperature-resistant explosion-proof tank as claimed in claim 5, wherein: the fixing member includes a fixing frame (22) that holds the plurality of modules (20) by pressure and a locking bolt (23) that connects the fixing frame (22) and the case (1).

7. The high protection low temperature resistant explosion-proof tank of claim 1, wherein: a plurality of reinforcing ribs (24) are distributed in the box body (1).

8. The high-protection low-temperature-resistant explosion-proof tank as claimed in claim 5, wherein: the periphery wall of each module (20) all is equipped with second sealing washer (25).