CN113488883A

CN113488883A - Explosion-proof box with explosion-proof surface

Info

Publication number: CN113488883A
Application number: CN202110894702.9A
Authority: CN
Inventors: 孙超; 谢宙鹏; 周智超; 翁振克
Original assignee: SHANGHAI BAOLIN EXPLOSIONPROOF ELECTRIC CO Ltd
Current assignee: SHANGHAI BAOLIN EXPLOSIONPROOF ELECTRIC CO Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-10-08
Anticipated expiration: 2041-08-05
Also published as: CN113488883B

Abstract

The invention discloses an explosion-proof box with an explosion-proof surface, which comprises a box body, wherein a distributor is fixedly arranged on the inner left surface of the box body, two pairs of connecting blocks are fixedly connected on the outer front surface of the box body, connecting grooves are respectively formed in the upper surface and the lower surface of each connecting block, a first rectangular groove is formed in the inner rear surface of the box body, first vent holes are uniformly formed in the rear groove surface of the first rectangular groove, a turnover mechanism is connected on the right surface of the box body through the connecting blocks, an opening and closing mechanism is connected on the inner rear surface of the box body, blocking pieces are respectively and fixedly connected on the left groove edge and the right groove edge of the first rectangular groove, a sliding plate is movably arranged in the first rectangular groove, second vent holes with the same number as the first vent holes are formed in the surface of the sliding plate, and a blocking piece is fixedly connected at the lower end of the sliding plate, make ventilation hole one stagger with ventilation hole two positions, reach simultaneously and connect electric and inclosed effect closing the in-process of block terminal explosion-proof door.

Description

Explosion-proof box with explosion-proof surface

Technical Field

The application relates to the technical field of explosion-proof distribution boxes, in particular to an explosion-proof box with an explosion-proof surface.

Background

The explosion-proof distribution box has explosion-proof performance. Mainly comprises an explosion-proof lighting distribution box, an explosion-proof power distribution box, an explosion-proof anticorrosion distribution box and the like. The explosion-proof distribution box is suitable for power distribution and wiring in flammable and explosive places such as petrochemical devices, oil platforms, chemical engineering, pharmacy, coal, smelting, shipbuilding, military industry, textile and the like, and along with rapid development of industries such as oil, chemical engineering, military industry, engineering, factories and mines, the explosion-proof distribution box is more and more widely used in production, storage and rescue, and more varieties are provided. How to prevent the explosion of the explosion-proof distribution box from happening in an explosive gas dangerous place is an important topic. Since the explosion-proof distribution box inevitably generates electric sparks during operation, once the electric sparks meet explosive gas mixtures in production or rescue sites, explosion accidents can be caused, and the life safety of national property and citizens is directly endangered. Therefore, as the most widely used lighting lamp, the explosion-proof technical problem has already attracted general attention and high attention of people;

as disclosed in the chinese patent: "an explosion-proof electric cabinet", the publication number: CN108882582A, through the dust collection mechanism, the explosion-proof electric cabinet avoids the malfunction and even damage of internal electrical equipment caused by dust; the drying box is arranged, and a drying agent is arranged in the drying box, so that water vapor in the explosion-proof electric cabinet can be absorbed by the drying agent, and short circuit of internal electrical equipment is avoided; the LED lamp is arranged, so that a worker can conveniently overhaul faults in the explosion-proof electric cabinet; the file storage box is arranged, so that the staff can conveniently record the failure reason of the electrical equipment, and the later problem can be conveniently processed; be equipped with the metal sheet for can pass through the metal sheet with the inside static of explosion-proof electric cabinet and transmit for ground, guarantee the safe operation of electrical equipment in the explosion-proof electric cabinet, but the explosion-proof electric cabinet that sets up in explosive gas dangerous place still has following problem:

(1) when the distribution box in an explosive gas dangerous place is powered off and powered on, the door of the common distribution box is opened to ensure that the distributor is inevitably contacted with the outside air, and the current and the electric spark which are possibly generated during the power on and the power off can detonate the air to cause danger;

(2) distribution box for explosive gas danger place on the market is for safe consideration, and the protection mechanism that sets up still needs extra a large amount of operating procedure except normal chamber door operation that opens and shuts, greatly increased the operating time of opening and close the distribution box, reduced operating efficiency.

(3) Distribution boxes for explosive gas hazardous locations on the market are provided with protection mechanisms for safety reasons, which require keeping in mind the sequence and steps of operation, are prone to misoperation and missing operation for operators in plants with limited level of general knowledge, and simple mistakes can cause irreparable losses.

Disclosure of Invention

The invention aims to provide an explosion-proof box with an explosion-proof surface, which aims to solve the problems in the background technology.

The embodiment of the application adopts the following technical scheme:

an explosion-proof box with an explosion-proof surface comprises a box body, wherein a distributor is fixedly arranged on the inner left surface of the box body, two pairs of connecting blocks are fixedly connected to the outer front surface of the box body, connecting grooves are formed in the upper surface and the lower surface of each connecting block, a first rectangular groove is arranged on the rear surface in the box body, a first ventilation hole is uniformly arranged on the rear groove surface of the first rectangular groove, the right surface of the box body is connected with a turnover mechanism through a connecting block, the inner rear surface of the box body is connected with an opening and closing mechanism, the left and right groove edges of the first rectangular groove are fixedly connected with baffle plates, a sliding plate is movably arranged in the first rectangular groove, the surface of the sliding plate is provided with a second vent hole with the same number as the first vent hole, the lower end of the sliding plate is fixedly connected with a stop block, the front end of the stop block is in an arc shape which is bent upwards, and the thickness of the sliding plate is the same as the distance from the stop piece to the rear groove surface of the rectangular groove.

Preferably, tilting mechanism includes explosion-proof board, two connecting rods of the front end fixedly connected with of explosion-proof board, every two quarter butt of the equal fixedly connected with in left end of connecting rod, two the connecting rod passes through the quarter butt and the spread groove is articulated with two pairs of connecting blocks respectively, the through-hole has been seted up to explosion-proof board's right side face, explosion-proof board matches with the specification of box, the other spout that is equipped with of through-hole, the spout internalization is provided with the fixture block, fixture block right-hand member fixedly connected with movable block, movable block lower extreme fixedly connected with stopper, the spacing groove has been seted up to the bottom surface of stopper, the right side fixed surface of movable block is connected with the driving lever.

Preferably, the rear end of the through hole is provided with a vertical groove, the rear groove surface of the vertical groove is provided with a circular groove, the rear groove surface of the circular groove is provided with two first arc-shaped grooves, the two first arc-shaped grooves penetrate through the rear plate surface of the explosion-proof plate, the connection position of the through hole and the vertical groove is located in the middle of the vertical groove, and the through hole is internally provided with a rotating mechanism.

Preferably, slewing mechanism includes the holding rod, the left surface mid portion fixedly connected with round bar one of holding rod, the left end fixedly connected with bull stick of round bar one, the left surface fixedly connected with two round bars two of bull stick.

Preferably, the starting and stopping mechanism includes the square, two arc wall two, two have been seted up on the right surface of square the transition has been seted up to the left trough surface of arc wall two, the pole groove has been seted up to the left trough surface of transition, the left fixed surface of square is connected with the diaphragm, two risers of the last fixed surface of diaphragm, two the opposite face fixedly connected with of riser connects the electric sheetmetal, pole inslot activity has cup jointed round bar three, the right-hand member fixedly connected with square pole of round bar three, the square pole activity is arranged in the transition, be connected with the spring between square bar both ends and the transition and make the square pole leave the space of inserting when not receiving external force and arc wall two between.

Preferably, circle pole one activity articulates in the through-hole, the bull stick activity sets up in erecting the inslot, two the activity of circle pole two respectively sets up in two arc wall one, two the left end of circle pole two inserts the space of reserving between square bar and the arc wall two respectively, the left end fixedly connected with kelly of circle pole three, the lower surface of dog contacts with the back pole face of kelly, the thickness of kelly upper end surpasss two intervals of connecing the electric sheet metal, two connect to be connected with the electric wire between electric sheet metal and the distributor.

Preferably, when the slide lower extreme was laminated with a rectangular channel tank bottom, ventilation hole one and the coincidence of ventilation hole position, fixed surface is provided with sealed the pad behind the slide, behind the slide was mentioned through the dog in the rotation of kelly, ventilation hole one staggers with ventilation hole position.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

one of them, kelly pivoted in-process upper end is blocked gradually two and is connect between the electric sheet metal, because the kelly upper end is electrically conductive can accomplish the switch-on of distributor, meets blockking of dog when the lower extreme of kelly rotates simultaneously, drives the dog and shifts up, and the dog removes and drives the slide and shift up in rectangular channel one for ventilation hole one staggers with ventilation hole two positions, reaches simultaneously and connects electric and inclosed effect closing the in-process of block terminal flame proof door.

Secondly, when opening the block terminal next time, along with the antiport of holding rod, drive the kelly and connect the separation of electric sheetmetal, and the dog loses the support of kelly, and the slide is automatic to slide down, and air vent one and air vent two positions coincide can accomplish the outage automatically and open the effect of air vent.

Third, operating personnel only need be through rotating, and the pull holding rod can be to opening and close and sealed of block terminal, and easy operation compares with the common mode that utilizes the door handle to open the block terminal, and the operation action is similar, but has saved the outage and the step of ventilating after opening the case door, has improved operating efficiency.

Fourth, along with the rotation of holding rod, when opening the chamber door, earlier the outage ventilates earlier, then just can open the block terminal, and the block terminal still circular telegram when both having avoided opening the chamber door, opens the chamber door and contains the risk that dust air direct contact leads to the explosion with the external world, still makes the incasement ventilate in advance, has reduced interior temperature, and the interior difference in temperature is too big when avoiding opening.

And fifthly, when the box door is closed, electrified and closed, so that the danger caused by air detonation by electric sparks possibly generated at the moment of electrification is avoided, the detonation range is narrowed in the box, the air outside the box cannot be affected, and the safety is improved.

And sixthly, the power on/off and the space open/close are simultaneously achieved, the power on/off and the space open/close are automatically completed when the distribution box is opened or closed through one operation, the power on/off and the space open/close are completed on the premise of completing the opening and closing of the box door, the operation steps are not required to be deliberately memorized by an operator, the error space is reduced, and the influence of human errors on the safety is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of an explosion-proof plate in the invention;

FIG. 3 is a schematic structural view of the case of the present invention;

FIG. 4 is a schematic structural view of a grip of the present invention;

FIG. 5 is a schematic structural view of a third round bar according to the present invention;

FIG. 6 is a schematic diagram of a block according to the present invention;

FIG. 7 is a schematic structural diagram of an arc-shaped slot I in the present invention;

FIG. 8 is a schematic structural view of a vertical groove in the present invention;

FIG. 9 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 10 is an enlarged view of the structure of FIG. 1 at B according to the present invention;

FIG. 11 is a schematic view of the structure of the chute of the present invention;

in the figure: 1. a box body; 2. an explosion-proof plate; 3. a holding rod; 4. a square block; 5. a third round bar; 6. connecting grooves; 7. a power distributor; 8. a first rectangular groove; 9. a first ventilation hole; 10. a baffle plate; 11. a second air vent; 12. a slide plate; 13. a stopper; 14. a gasket; 15. a first round rod; 16. a rotating rod; 17. a second round bar; 18. connecting blocks; 19. a square bar; 20. a clamping rod; 21. a short bar; 22. a connecting rod; 23. a first arc-shaped groove; 24. a through hole; 25. a vertical slot; 26. a circular groove; 27. a rod groove; 28. transferring rails; 29. an arc-shaped groove II; 30. a transverse plate; 31. a vertical plate; 32. connecting a metal sheet; 33. a chute; 34. a deflector rod; 36. a limiting groove; 37. a limiting block; 38. a moving block; 39. a clamping block; 40. a front groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1-11, the invention provides a technical scheme of an explosion-proof box with an explosion-proof surface, which comprises the following steps: the box comprises a box body 1, a distributor 7 is fixedly arranged on the inner left surface of the box body 1, two pairs of connecting blocks 18 are fixedly connected on the outer front surface of the box body 1, connecting grooves 6 are respectively formed in the upper surface and the lower surface of each connecting block 18, a rectangular groove I8 is formed in the inner rear surface of the box body 1, vent holes I9 are uniformly formed in the rear groove surface of the rectangular groove I8, a turnover mechanism is connected on the right surface of the box body 1 through the connecting blocks 18, an opening and closing mechanism is connected on the inner rear surface of the box body 1, blocking pieces 10 are respectively and fixedly connected on the left groove edge and the right groove edge of the rectangular groove I8, a sliding plate 12 is movably arranged in the rectangular groove I8, vent holes II 11 with the same number as the vent holes I9 are formed in the surface of the sliding plate 12, a blocking block 13 is fixedly connected on the lower end of the sliding plate 12, the front end of the blocking piece 13 is in an upward-bent arc shape, the thickness of the sliding plate 12 is the same as the distance from the blocking pieces 10 to the rear groove surface of the rectangular groove I8, the turnover mechanism comprises an explosion-isolating plate 2, the front end of the explosion-proof plate 2 is fixedly connected with two connecting rods 22, the left end of each connecting rod 22 is fixedly connected with two short rods 21, the two connecting rods 22 are respectively hinged with two pairs of connecting blocks 18 through the short rods 21 and the connecting grooves 6, the right plate surface of the explosion-proof plate 2 is provided with a through hole 24, the explosion-proof plate 2 is matched with the specification of the box body 1, a sliding groove 33 is arranged beside the through hole 24, a clamping block 39 is movably arranged in the sliding groove 33, the right end of the clamping block 39 is fixedly connected with a moving block 38, the lower end of the moving block 38 is fixedly connected with a limiting block 37, the bottom surface of the limiting block 37 is provided with a limiting groove 36, the right surface of the moving block 38 is fixedly connected with a shift lever 34, the rear end of the through hole 24 is provided with a vertical groove 25, the rear groove surface of the vertical groove 25 is provided with a circular groove 26, the rear groove surface of the circular groove 26 is provided with two arc-shaped grooves 23, and the two arc-shaped grooves one 23 penetrate through the rear plate surface of the explosion-proof plate 2, the connection part of the through hole 24 and the vertical groove 25 is positioned in the middle part of the vertical groove 25, a rotating mechanism is arranged in the through hole 24 and comprises a holding rod 3, the middle part of the left surface of the holding rod 3 is fixedly connected with a first round rod 15, the left end of the first round rod 15 is fixedly connected with a rotating rod 16, the left surface of the rotating rod 16 is fixedly connected with two second round rods 17, an opening and closing mechanism comprises a square 4, the right surface of the square 4 is provided with two second arc grooves 29, the left groove surfaces of the two second arc grooves 29 are provided with a rotating rail 28, the left groove surface of the rotating rail 28 is provided with a rod groove 27, the left surface of the square 4 is fixedly connected with a transverse plate 30, the upper surface of the transverse plate 30 is fixedly connected with two vertical plates 31, the opposite surfaces of the two vertical plates 31 are fixedly connected with electric connection metal sheets 32, a third round rod 5 is movably sleeved in the rod groove 27, the right end of the third round rod 5 is fixedly connected with a square rod 19, the square rod 19 is movably arranged in the rotating rail 28, a spring is connected between the two ends of the square rod 19 and the rotating rail 28, so that an insertion space is reserved between the square rod 19 and the arc-shaped grooves 29 when the square rod 19 is not subjected to external force, the first round rods 15 are movably hinged in the through holes 24, the rotating rod 16 is movably arranged in the vertical groove 25, the second round rods 17 are respectively and movably arranged in the first arc-shaped grooves 23, the left ends of the second round rods 17 are respectively inserted into the reserved space between the square rod 19 and the arc-shaped grooves 29, the left end of the third round rod 5 is fixedly connected with a clamping rod 20, the lower surface of the baffle 13 is contacted with the rear rod surface of the clamping rod 20, the thickness of the upper end of the clamping rod 20 exceeds the distance between the two electric connection metal sheets 32, an electric wire is connected between the two electric connection metal sheets 32 and the distributor 7, when the lower end of the sliding plate 12 is attached to the bottom 8 of the rectangular groove, the positions of the first vent hole 9 and the second vent hole 11 are overlapped, a sealing gasket 14 is fixedly arranged on the rear surface of the sliding plate 12, and after the clamping rod 20 rotates to lift the sliding plate 12 through the baffle 13, when the explosion-proof distribution box needs to be closed, the explosion-proof plate 2 is attached to the box body 1 by rotating the explosion-proof plate 2 through the connecting groove 6 and the short rod 21, the holding rod 3 is pushed into the box body 1, the first round rod 15 pushes the rotating rod 16 to slide in the vertical groove 25, when the rotating rod 16 slides to the round groove 26, the rotating rod 16 loses the limitation of the vertical groove 25, the rotating rod 16 moves and drives the two second round rods 17 to move together, the second round rods 17 are inserted into a reserved space between the square rod 19 and the second arc-shaped groove 29 when the rotating rod 16 reaches the round groove 26, the rotating rod 16 can be driven to rotate by rotating the holding rod 3, the rotating rod 16 rotates to drive the two second round rods 17 to slide along the two first arc-shaped grooves 23, the two second round rods 17 encounter the blockage of the square rod 19 in the sliding process, the square rod 19 is driven to move together, the square rod 19 rotates around the third round rod 5 as an axis in the rotating rail 28 counterclockwise, and the square rod 19 rotates to drive the clamping rod 20 to rotate anticlockwise through the third round rod 5, the kelly 20 pivoted in-process upper end is gone into gradually and is connect between electric sheet metal 32 two, because the 7's of distributor switch-on can be accomplished to kelly 20 upper end electrically conductive, meet stopping of dog 13 when the lower extreme of kelly 20 rotates simultaneously, it shifts up to drive dog 13, dog 13 removes and drives slide 12 and shift up in rectangular channel 8, make ventilation hole 9 and two 11 positions in ventilation hole stagger, reach simultaneously and connect electric and inclosed effect closing the in-process of block terminal explosion proof door, only need utilize common mounting fixed holding rod 3 after rotating can, the effect of accomplishing the outage and opening the vent when opening the block terminal next time, ventilation hole 9 and two 11 positions in ventilation hole stagger.

The working principle is as follows: when the explosion-proof distribution box needs to be closed, the explosion-proof plate 2 is attached to the box body 1 by rotating the explosion-proof plate 2 through the connecting groove 6 and the short rod 21, the holding rod 3 is pushed into the box body 1, the first round rod 15 pushes the rotating rod 16 to slide in the vertical groove 25, when the rotating rod 16 slides to the round groove 26, the rotating rod 16 loses the limitation of the vertical groove 25, the rotating rod 16 moves and drives the two second round rods 17 to move together, the second round rods 17 are inserted into a reserved space between the square rod 19 and the second arc-shaped groove 29 when the rotating rod 16 reaches the round groove 26, the rotating rod 16 can be driven to rotate by rotating the holding rod 3, the rotating rod 16 rotates to drive the two second round rods 17 to slide along the two first arc-shaped grooves 23, the two second round rods 17 encounter the blockage of the square rod 19 in the sliding process, the square rod 19 is driven to move together, the square rod 19 rotates around the third round rod 5 as an axis in the rotating rail 28 counterclockwise, and the square rod 19 rotates to drive the clamping rod 20 to rotate anticlockwise through the third round rod 5, the kelly 20 pivoted in-process upper end is gone into gradually and is connect between two electricity sheetmetals 32, because the 7's of distributor switch-on can be accomplished to kelly 20 upper end electrically conductive, meet stopping of dog 13 when the lower extreme of kelly 20 rotates simultaneously, it shifts up to drive dog 13, dog 13 removes and drives slide 12 and shift up in rectangular channel 8, make two 11 positions in ventilation hole 9 and ventilation hole stagger, reach simultaneously and connect electric and inclosed effect closing the in-process of block terminal explosion proof door, only need utilize the fixed holding rod 3 after rotating of common mounting can, the automatic effect of accomplishing the outage and opening the vent when opening the block terminal next time.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

It should also be noted that 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, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides an explosion-proof case with flame proof face, includes box (1), its characterized in that: a distributor (7) is fixedly arranged on the inner left surface of the box body (1), two pairs of connecting blocks (18) are fixedly connected to the outer front surface of the box body (1), connecting grooves (6) are formed in the upper surface and the lower surface of each connecting block (18), a first rectangular groove (8) is formed in the inner rear surface of the box body (1), and first ventilation holes (9) are uniformly formed in the rear groove surface of the first rectangular groove (8);

the right surface of the box body (1) is connected with a turnover mechanism through a connecting block (18);

the inner rear surface of the box body (1) is connected with an opening and closing mechanism.

2. The explosion-proof box with the explosion-proof surface according to claim 1, characterized in that: the groove is along equal fixedly connected with separation blade (10) about rectangular channel (8), rectangular channel (8) internalization is provided with slide (12), ventilation hole two (11) the same with ventilation hole (9) quantity are seted up to the face of slide (12), lower extreme fixedly connected with dog (13) of slide (12), the front end of dog (13) is the arc of kickup, the thickness of slide (12) is the same with separation blade (10) distance to rectangular channel (8) back groove face.

3. The explosion-proof box with the explosion-proof surface according to claim 1, characterized in that: the turnover mechanism comprises an explosion-proof plate (2), two connecting rods (22) are fixedly connected to the front end of the explosion-proof plate (2), two short rods (21) are fixedly connected to the left end of each connecting rod (22), the two connecting rods (22) are respectively hinged to two pairs of connecting blocks (18) through the short rods (21) and connecting grooves (6), a through hole (24) is formed in the right plate surface of the explosion-proof plate (2), the explosion-proof plate (2) is matched with the box body (1) in specification, a sliding groove (33) is formed beside the through hole (24), a front groove (40) is formed in the front end of the sliding groove (33), a clamping block (39) is movably arranged in the sliding groove (33), a moving block (38) is fixedly connected to the right end of the clamping block (39), a limiting block (37) is fixedly connected to the lower end of the moving block (38), and a limiting groove (36) is formed in the bottom surface of the limiting block (37), and a shifting lever (34) is fixedly connected to the right surface of the moving block (38).

4. The explosion-proof box with the explosion-proof surface according to claim 3, characterized in that: vertical groove (25) have been seted up to the rear end of through-hole (24), circular slot (26) have been seted up to the back groove face of vertical groove (25), two arc wall (23) have been seted up to circular slot (26) back groove face, two arc wall (23) run through the back face of explosion-proof board (2), the switch-on department of through-hole (24) and vertical groove (25) is located the mid portion of vertical groove (25), be provided with slewing mechanism in through-hole (24).

5. The explosion-proof box with the explosion-proof surface according to claim 4, characterized in that: the rotating mechanism comprises a holding rod (3), the middle part of the left surface of the holding rod (3) is fixedly connected with a first round rod (15), the left end of the first round rod (15) is fixedly connected with a rotating rod (16), and the left surface of the rotating rod (16) is fixedly connected with two second round rods (17).

6. The explosion-proof box with the explosion-proof surface according to claim 2, characterized in that: the opening and closing mechanism includes square (4), two arc wall two (29), two have been seted up on the right surface of square (4) turn round rail (28) have been seted up to the left trough surface of arc wall two (29), rod groove (27) have been seted up to the left trough surface of turn round rail (28), the left surface fixedly connected with diaphragm (30) of square (4), two last fixed surface of diaphragm (30) is connected with two riser (31), two the opposite face fixedly connected with of riser (31) connects electric sheetmetal (32).

7. The explosion-proof box with the explosion-proof surface according to claim 6, characterized in that: round bar three (5) have been cup jointed in pole groove (27) internalization, the right-hand member fixedly connected with square bar (19) of round bar three (5), square bar (19) activity is arranged in transition (28), be connected with the spring between square bar (19) both ends and transition (28) and make square bar (19) leave the space of inserting when not receiving external force and between arc wall two (29).

8. The explosion-proof box with the explosion-proof surface according to claim 5, characterized in that: the round bar I (15) is movably hinged in the through hole (24), the rotating rod (16) is movably arranged in the vertical groove (25), the round bar II (17) is movably arranged in the arc grooves I (23) respectively, and the left ends of the round bar II (17) are inserted into a reserved space between the square bar (19) and the arc grooves II (29) respectively.

9. The explosion-proof box with the explosion-proof surface according to claim 7, characterized in that: the left end fixedly connected with card pole (20) of circle pole three (5), the back pole face of card pole (20) contacts with the lower surface of dog (13), the thickness of card pole (20) upper end surpasss two and connects the interval of electric sheet metal (32), two connect and be connected with the electric wire between electric sheet metal (32) and distributor (7).

10. The explosion-proof box with the explosion-proof surface according to claim 9, characterized in that: when slide (12) lower extreme and rectangular channel (8) tank bottom laminating, ventilation hole (9) and two (11) position coincidence in ventilation hole, slide (12) rear surface is fixed and is provided with sealed pad (14), kelly (20) rotate and mention slide (12) back through dog (13), and ventilation hole (9) stagger with two (11) positions in ventilation hole.