CN118137308A - Explosion-proof block terminal and seal failure alarm device thereof - Google Patents

Abstract

The invention discloses an explosion-proof distribution box which comprises a shell and is characterized in that one side of the shell is connected with a door plate in a sliding mode, the upper portion of the side wall of an inner cavity of the shell is fixedly connected with a symmetrical fixing plate, the middle portion of one side of the door plate far away from the shell is provided with a third sliding groove, the inner cavity of the third sliding groove is horizontally connected with a button in a sliding mode, two ends of the door plate are provided with symmetrical second grooves, the second grooves are L-shaped grooves and are formed by the horizontal grooves and vertical grooves together, and a limiting mechanism for limiting and fixing the door plate is arranged between the fixing plate and the door plate. According to the invention, the first clamping block is tightly attached to the second clamping block, and the sealing rubber strips arranged on the outer walls of the first clamping block and the second clamping block are matched, so that the sealing effect between the door plate and the shell is better, the risk of explosion caused by the fact that combustible gas enters the inner cavity of the shell is reduced, and when the door plate is fixed, the door plate is only required to be pushed inwards until the door plate cannot move, and then the first clamping block is clamped in the second groove to limit and fix the door plate.

Description

Explosion-proof block terminal and seal failure alarm device thereof

Technical Field

The invention relates to the technical field of electrical equipment, in particular to an explosion-proof distribution box and a sealing failure alarm device thereof.

Background

The explosion-proof distribution box is mainly used in places containing explosive gases, and because the explosion-proof distribution box inevitably generates electric sparks when working, once the explosion-proof distribution box meets an explosive gas mixture in a production or rescue site, explosion accidents can be caused, and the life safety of national property and citizens is directly endangered.

As disclosed in chinese patent publication No. CN111463679a, an explosion-proof distribution box is a box-shaped structure formed by closing a box cover and a box body, the box cover and the box body are hinged by a hinge assembly, the hinge assembly is located at the same side of the box cover and the box body, and the axial direction of the hinge shaft is parallel to the matching surface of the hinge assembly and the box body; the hinge assembly comprises a first hinge body connected to the box cover and a second hinge body connected to the side face of the box body, and a first hinge hole and a second hinge hole which are used for the hinge shaft to penetrate through and are opposite to each other are respectively formed in the first hinge body and the second hinge body.

In this scheme, although the case lid can be parallel fix with the box, and need not to separate case lid and box when overhauing, nevertheless when dismantling and fixing the box, still need fix through a plurality of bolts, then need dismantle the bolt repeatedly and dismantle and fix the case lid when overhauling and maintaining the block terminal, and the second hinge body is outstanding the part of box longer, produces with staff's limbs and bumps easily.

Disclosure of Invention

The invention aims to provide an explosion-proof distribution box and a sealing failure alarm device thereof, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions:

The utility model provides an explosion-proof block terminal, includes the casing, its characterized in that, one side sliding connection of casing has the door plant, the lateral wall upper portion fixedly connected with symmetry of the inner chamber of casing fixed plate, the door plant has been kept away from one side middle part of casing and has been seted up the third spout, third spout inner chamber horizontal sliding connection has the button, the second recess of symmetry has been seted up at the both ends of door plant, the second recess is L type groove, comprises horizontal groove and vertical groove jointly, be provided with the stop gear who is used for spacing fixed door plant between fixed plate and the door plant, when pressing the button and promote the in-process that the door plant is close to the fixed plate, stop gear's output can be close to the second recess and joint in horizontal groove.

As a further scheme of the invention: the vertical inslot perpendicular sliding connection has the second fixture block, through first spring elastic connection between one side that the second fixture block is close to the button and the vertical inslot is close to one side of button, one side middle part fixedly connected with driven plate that the second fixture block lower extreme is close to the fixed plate, the second spout that the cooperation driven plate used has been seted up at the inner chamber middle part of door plant, driven plate perpendicular sliding connection is in the second spout.

As a further scheme of the invention: the second spout is linked together with the third spout, through second spring elastic connection between the lateral wall of button and second spout, one side fixedly connected with symmetrical third spout that the button is close to the second spout, the symmetry interval between the third spout equals with the width of driven plate, the symmetry interval between the driven plate is greater than the height of second fixture block, one side fixedly connected with symmetrical driven lever of button is kept away from to the third spout, the driven slot that the cooperation driven lever used has been seted up to the one end lateral wall that the driven plate kept away from the second fixture block, driven slot is inclined towards second fixture block position.

As a further scheme of the invention: the limiting mechanism comprises a moving plate, symmetrical fourth sliding grooves are formed in the upper side wall and the lower side wall of the shell, the moving plate is vertically and slidably connected in the fourth sliding grooves, one end, away from the fixed plate, of the moving plate is elastically connected with one side wall, away from the fixed plate, of the inner cavity of the fourth sliding groove through a third spring, a first clamping block is fixedly connected with the lower end of the moving plate, and a symmetrical connecting rod is slidably connected with one side, close to the door plate, of the moving plate.

As a further scheme of the invention: the connecting rod is elastically connected with the inner cavity side wall of the fixed plate through a fourth spring, the cross rod is fixedly connected with the side, away from the fixed plate, of the connecting rod in a common mode, the cross rod is in sliding connection with the inner cavity side wall of the shell, a vertical rod is fixedly connected with the side, close to the button, of the upper end of the cross rod, the side wall of the vertical rod is attached to the movable plate, and a driving rod is fixedly connected with the side, close to the movable plate, of the vertical rod.

As a further scheme of the invention: the utility model discloses a fixed plate, including fixed plate, movable plate, actuating lever, baffle, actuating lever, no. one groove has been seted up to the movable plate lower part, actuating lever sliding connection is in a inslot, no. three grooves have been seted up on the one end upper portion that a groove is close to the fixed plate, no. two grooves have been seted up to one side that a groove was kept away from to No. three grooves and is close to the fixed plate, no. two grooves have been seted up to one side that No. three grooves were kept away from to No. two grooves, be provided with the arch between No. three grooves, no. two grooves and the arc groove, no. four grooves have been seted up at the one side middle part that the arch is close to No. three grooves, no. four grooves are close to one end lateral wall rotation of a groove and are connected with the baffle.

As a further scheme of the invention: the baffle comprises horizon bar and perpendicular pole jointly, the horizon bar is parallel with the bottom surface in a groove and be located the junction in No. three grooves and a groove, perpendicular pole then is located the junction in arc wall and a groove, no. five grooves have been seted up to No. four groove lower parts, no. five groove inner chamber horizontal sliding connection has the driven piece, the driven piece is kept away from between the one end in No. three grooves and No. five groove inner chamber lateral wall through fifth spring elastic connection, the driven piece is kept away from the one end middle part sliding connection in No. three grooves and is had the second balancing pole, the one end and No. five groove lateral wall fixed connection of driven piece are kept away from to the second balancing pole.

As a further scheme of the invention: the junction in No. two grooves and arc groove is provided with the third fixture block, the third recess that the cooperation third fixture block used has been seted up to one side that No. two grooves are close to the arc groove, the first balancing pole of third recess inner chamber lateral wall fixedly connected with symmetry, one side and the third fixture block sliding connection of third recess are kept away from to first balancing pole, through sixth spring elastic connection between third fixture block and the third recess, one side that No. two grooves are kept away from to the third fixture block is the arc, the inclined plane has been seted up to one side that No. two grooves are close to the third fixture block.

As a further scheme of the invention: the utility model discloses a fixed plate, including casing, fixed plate, first T type key, fixed plate, second T type key, first spout of symmetry has been seted up to outer wall one side of casing, sliding connection has first T type key in first spout, first recess has been seted up at the middle part of first T type key, one side that the fixed plate was kept away from to the inner chamber of first recess rotates to be connected with the connecting plate, one end fixed connection second T type key that first T type key was kept away from to the connecting plate, one side sliding connection that the fixed plate was kept away from to the second T type key and door board.

As a further scheme of the invention: still include sealed failure alarm device, sealed failure alarm device includes the shell, shell fixed connection is in the inner chamber lateral wall of casing, a plurality of air vents have been seted up all around to the shell, one side fixedly connected with bee calling organ of casing is kept away from to the shell outer wall, shell inner chamber upper portion fixedly connected with circuit board, shell inner chamber lower part fixedly connected with master control circuit board, one side electric connection of master control circuit board has combustible gas detector, circuit board and master control circuit board electric connection, master control circuit board and bee calling organ electric connection.

Compared with the prior art, the invention has the beneficial effects that:

The sealing rubber strips arranged on the outer walls of the first clamping block and the second clamping block are matched, so that the sealing effect between the door plate and the shell is better, the risk of explosion caused by the fact that flammable gas enters the inner cavity of the shell is reduced, the door plate is only required to be pushed inwards to be unable to move after being matched with the moving plate when being fixed, the moving plate can drive the first clamping block to be clamped in the second groove, so that the door plate is limited and fixed, no matter whether the stress on any one side of the inner side and the outer side of the door plate can enable the door plate to move, when the door plate needs to be dismounted, the door plate only needs to be pushed and driven to move inwards until the door plate cannot move, the door plate can be separated from the shell by pulling the button, and the door plate can be rotated to the other side of the shell after the door plate is separated from the shell through the first T-shaped block and the second T-shaped block, so that the distribution box is convenient to overhaul.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the housing according to the present invention.

Fig. 3 is a schematic structural view of a door panel according to the present invention.

Fig. 4 is a schematic structural view of the region B in fig. 3 according to the present invention.

FIG. 5 is a schematic view of the structure of the region C in FIG. 3 according to the present invention.

Fig. 6 is a schematic structural view of the region a in fig. 2 according to the present invention.

Fig. 7 is a schematic structural view of a moving plate in the present invention.

Fig. 8 is a schematic structural view of a baffle plate in the present invention.

Fig. 9 is a schematic view of the structure of the D area in fig. 8 according to the present invention.

FIG. 10 is a schematic diagram of a first T-key structure according to the present invention.

Fig. 11 is a schematic structural view of the housing in the present invention.

In the figure: 1. a housing; 2. a door panel; 3. a button; 4. a connecting plate; 5. a first T-bond; 6. a second T-bond; 7. a first groove; 8. a first chute; 9. a driven plate; 10. a first clamping block; 11. a second clamping block; 12. a second groove; 13. a second chute; 14. a third chute; 15. a driven rod; 16. a driven groove; 17. a push plate; 18. a fourth chute; 19. a vertical rod; 20. a cross bar; 21. a driving rod; 22. a fixing plate; 23. a moving plate; 24. a first groove; 25. an arc-shaped groove; 26. a third clamping block; 27. a second groove; 28. a third groove; 29. a first balance bar; 30. a baffle; 31. a third groove; 32. a protrusion; 33. a fourth groove; 34. a driven block; 35. a second balance bar; 36. a fifth groove; 37. a connecting rod; 38. a housing; 39. a vent hole; 40. a buzzer; 41. a circuit board; 42. a main control circuit board; 43. a combustible gas detector.

Detailed Description

Referring to fig. 1-3, in the embodiment of the invention, the explosion-proof distribution box comprises a housing 1, one side of the housing 1 is slidably connected with a door plate 2, a symmetrical fixing plate 22 is fixedly connected to the upper portion of the side wall of an inner cavity of the housing 1, a third sliding groove 14 is formed in the middle of one side of the door plate 2 far away from the housing 1, a button 3 is horizontally slidably connected to the inner cavity of the third sliding groove 14, symmetrical second grooves 12 are formed in two ends of the door plate 2, the second grooves 12 are L-shaped grooves and are formed by the horizontal grooves and the vertical grooves together, a limiting mechanism for limiting and fixing the door plate 2 is arranged between the fixing plate 22 and the door plate 2, and when the button 3 is pressed to push the door plate 2 to be close to the fixing plate 22, the output end of the limiting mechanism is close to the second grooves 12 and is clamped in the horizontal grooves.

Referring to fig. 4-5, a second clamping block 11 is vertically and slidingly connected in the vertical groove, one side of the second clamping block 11 close to the button 3 is elastically connected with one side of the vertical groove close to the button 3 through a first spring, a driven plate 9 is fixedly connected in the middle of one side of the lower end of the second clamping block 11 close to the fixed plate 22, a second sliding groove 13 matched with the driven plate 9 is arranged in the middle of the inner cavity of the door plate 2, the driven plate 9 is vertically and slidingly connected in the second sliding groove 13, the planes of the two ends of the second sliding groove 13 are intersected with the plane of one side of the horizontal groove far from the shell 1 and are closer to the button 3, namely, the second sliding groove 13 is communicated with the vertical groove and is in a closed shape with the horizontal groove, the second sliding groove 13 is communicated with a third sliding groove 14, the side walls of the button 3 and the second sliding groove 13 are elastically connected through a second spring, a symmetrical third chute 14 is fixedly connected to one side of the button 3 close to the second chute 13, the space between the symmetrical third chutes 14 is equal to the width of the driven plate 9, the space between the symmetrical driven plates 9 is larger than the height of the second clamping block 11, a symmetrical driven rod 15 is fixedly connected to one side of the third chute 14 far away from the button 3, a driven groove 16 matched with the driven rod 15 is formed in the side wall of one end of the driven plate 9 far away from the second clamping block 11, the driven groove 16 is a groove inclined towards the position of the second clamping block 11, when the button 3 is pressed, the driven groove 16 drives the push plate 17 to synchronously move towards the direction of the fixed plate 22, so that the driven plate 9 is driven to move downwards through the cooperation of the driven rod 15 and the driven groove 16, the second clamping block 11 is driven to move downwards into the vertical groove from the vertical groove, and after one end of the push plate 17 far away from the button 3 is attached to the side wall of the second chute 13, at this time, the door plate 2 is driven to move synchronously by continuously pressing the button 3, if only the door closing operation is needed, the door plate 2 is only needed to be directly pressed to move horizontally towards the inner cavity of the shell 1, and after the door is closed, the output end of the limiting mechanism is clamped in the horizontal groove to limit and fix the door plate 2, and if the door is opened, the door opening operation can be realized by continuously pressing the button 3.

The limiting mechanism comprises a moving plate 23, symmetrical fourth sliding grooves 18 are formed in the upper side wall and the lower side wall of the shell 1, the moving plate 23 is vertically and slidably connected in the fourth sliding grooves 18, one end of the moving plate 23, which is far away from the fixed plate 22, is elastically connected with one side wall of the fourth sliding groove 18, which is far away from the fixed plate 22, through a third spring, the lower end of the moving plate 23 is fixedly connected with a first clamping block 10, one side of the lower end of the moving plate 23, which is far away from the fixed plate 22, is fixedly connected with a first clamping block 10, in the process that the door plate 2 is close to the fixed plate 22, the first clamping block 10 is clamped in a horizontal groove, the width of the first clamping block 10 is equal to that of a second clamping block 11, after the first clamping block 10 is clamped in the horizontal groove, the first clamping block 10 is mutually abutted against the second clamping block 11, and the outer walls of the first clamping block 10 and the second clamping block 11 are respectively provided with a sealing rubber gasket, so that the sealing performance of the distribution box is improved, and the risk of explosion caused by the external combustible gas entering the box is reduced, and after the first clamping block 10 is attached to the second clamping block 11, the door plate 2 cannot be directly pushed to move at the moment, no matter the door plate 2 is pushed from the outside to the inner cavity of the shell 1 or the impact force generated by the explosion of the inner cavity of the shell 1 cannot move the door plate 2, the door plate 2 can be separated from the shell 1 only after the second clamping block 11 is separated from the first clamping block 10 by pressing the button 3, one side of the fixed plate 22 close to the door plate 2 is slidingly connected with a symmetrical connecting rod 37, the connecting rod 37 is elastically connected with the inner cavity side wall of the fixed plate 22 through a fourth spring, one side of the symmetrical connecting rod 37 far away from the fixed plate 22 is fixedly connected with a cross rod 20, the cross rod 20 is slidingly connected with the inner cavity side wall of the shell 1, one side of the upper end of the cross rod 20 close to the button 3 is fixedly connected with a vertical rod 19, the side wall of the vertical rod 19 is attached to the movable plate 23, namely the upper part of the vertical rod 19 is positioned in the fourth chute 18, a driving rod 21 is fixedly connected to one side of the vertical rod 19, which is close to the moving plate 23.

Referring to fig. 6-9, a first slot 24 is formed at the lower part of the moving plate 23, the driving rod 21 is slidably connected in the first slot 24, a third slot 31 is formed at the upper part of one end of the first slot 24 near the fixed plate 22, the third slot 31 is communicated with the first slot 24, a second slot 27 is formed at one side of the third slot 31 near the fixed plate 22, which is far away from one end of the first slot 24, an arc slot 25 is formed at one side of the second slot 27 far away from the third slot 31, the second slot 27 is communicated with the first slot 24, a protrusion 32 is arranged among the third slot 31, the second slot 27 and the arc slot 25, the protrusion 32 is a protruding part remained after the third slot 31, the second slot 27 and the arc slot 25 are formed at one side of the moving plate 23, a fourth slot 33 is formed at the middle part of one side of the protrusion 32 near the third slot 31, a baffle 30 is rotatably connected to one end side wall of the fourth slot 33 near the first slot 24, the baffle 30 is composed of a horizontal rod and a vertical rod, wherein the horizontal rod is parallel to the bottom surface of the first slot 24 and is positioned at the joint of the third slot 31 and the first slot 24, the vertical rod is positioned at the joint of the arc slot 25 and the first slot 24, the driving rod 21 gradually approaches and contacts with the vertical rod in the process that the driving rod 21 moves along the first slot 24 towards the fixed plate 22, the vertical rod can limit the position of the driving rod 21 to ensure that the driving rod 21 cannot move in the horizontal direction, and further the door closing operation is facilitated, namely, in the process that the door plate 2 is pushed to move towards the inner cavity of the shell 1, the door plate 2 contacts with the cross rod 20 and the vertical rod 19 to push the cross rod 20 and the vertical rod 19 to synchronously approach the fixed plate 22, so that the driving rod 21 is driven to move horizontally in the first slot 24, after the driving rod 21 contacts with the vertical rod, the door plate 2 cannot move continuously, the side wall of the fourth groove 33 is attached to the side wall of the vertical rod, so that the baffle 30 cannot rotate, at this time, the moving plate 23 moves towards the direction of the fixed plate 22 under the action of the third spring, so that the first clamping block 10 is driven to move towards the second groove 12, and is clamped in the second groove 12, in the moving process of the moving plate 23, the driving rod 21 is relatively far away from the position of the fixed plate 22, so that the baffle 30 can be driven to rotate through contact with the horizontal rod, and after the driving rod 21 relatively moves to the junction of the third groove 31 and the second groove 27, at this time, the first clamping block 10 is attached to the second clamping block 11, and the door plate 2 is limited and cannot move continuously.

A fifth groove 36 is formed at the lower part of the fourth groove 33, a driven block 34 is horizontally and slidably connected in the inner cavity of the fifth groove 36, one end of the driven block 34, which is far away from the third groove 31, is elastically connected with the side wall of the inner cavity of the fifth groove 36 through a fifth spring, a second balance rod 35 is slidably connected in the middle of one end of the driven block 34, which is far away from the third groove 31, one end of the second balance rod 35, which is far away from the driven block 34, is fixedly connected with the side wall of the fifth groove 36, the second balance rod 35 is used for balancing the driven block 34 to enable the driven block 34 to move more stably, the fifth spring is sleeved on the outer wall of the second balance rod 35, the vertical plane where one end of the fifth groove 36, which is close to the third groove 31, is located coincides with one side surface of the protrusion 32, which is close to the third groove 31, namely, after the baffle 30 rotates towards the direction of the second groove 27, the horizontal rod rotates into the fourth groove 33, in the process, the fifth groove 36 is pressed towards the inner cavity of the driven block 34, the fifth spring is compressed, after the driving rod 21 is separated from the horizontal rod, the fifth groove 36 moves towards the direction of the third groove 31 under the rebound force of the spring, so that the horizontal rod is pushed to rotate back to the initial position, a third clamping block 26 is arranged at the joint of the second groove 27 and the arc-shaped groove 25, a third groove 28 matched with the third clamping block 26 is arranged at one side of the second groove 27 close to the arc-shaped groove 25, a symmetrical first balance rod 29 is fixedly connected to the inner cavity side wall of the third groove 28, one side of the first balance rod 29 far away from the third groove 28 is in sliding connection with the third clamping block 26, the third clamping block 26 is elastically connected with the third groove 28 through a sixth spring, one side of the third clamping block 26 far away from the second groove 27 is arc-shaped, one side of the third clamping block 26 close to the second groove 27 is provided with an inclined plane, the inclined plane inclines towards the direction of the arc-shaped groove 25, in the process that the driving rod 21 is close to the arc-shaped groove 25 along the second groove 27, the driving rod 21 presses the third clamping block 26 into the third groove 28 after contacting with the inclined plane, after the driving rod 21 moves to the inner cavity of the arc-shaped groove 25, the third clamping block 26 returns to reset under the elastic force and keeps blocking the driving rod 21, the driving rod 21 can move along the arc-shaped groove 25 under the action of the elastic force by matching with the pulling force applied by a person on the button 3 because the side wall of the third clamping block 26 is arc-shaped, so that the driving rod 21 drives the moving plate 23 to drive the first clamping block 10 to be far away from the door plate 2, the driving rod 21 relatively moves from the arc-shaped groove 25 to the first groove 24, in the process, the driving rod 21 can be contacted with one side of the vertical rod, which is close to the arc-shaped groove 25, so that the baffle 30 is driven to rotate again, namely the baffle 30 can only block the driving rod 21 in the process that the driving rod 21 is close to the third groove 31 from the first groove 24, through the cooperation of actuating lever 21 and arc wall 25 and groove 24, the movable plate 23 can keep away from door plant 2 and obtain spacingly at the cooperation of actuating lever 21 and groove 24, at the in-process of closing the door, only need promote door plant 2 or button 3 until door plant 2 can't continue the removal can, at the in-process of opening the door, then can only drive second fixture block 11 to remove to vertical inslot and first fixture block 10 separation earlier through pressing button 3, then continue to promote button 3 and drive door plant 2 and remove until unable removal, then pulling button 3 thereby drive door plant 2 and keep away from casing 1.

Referring to fig. 10, a symmetrical first chute 8 is provided on one side of the outer wall of the housing 1, a first T-shaped key 5 is slidably connected in the first chute 8, a first groove 7 is provided in the middle of the first T-shaped key 5, a connecting plate 4 is rotatably connected to one side of the inner cavity of the first groove 7 away from the fixed plate 22, one end of the connecting plate 4 away from the first T-shaped key 5 is fixedly connected with a second T-shaped key 6, the second T-shaped key 6 is slidably connected with one side of the door plate 2 away from the fixed plate 22, in the door closing state, at the moment, the connecting plate 4 is simultaneously attached to the side walls of the housing 1 and the door plate 2, in the door opening process, the door plate 2 is in a moving process, both the second T-shaped key 6 and the connecting plate 4 are kept in a static state, in the door plate 2 is kept away from the housing 1, the door plate 2 drives the second T-shaped key 6 and the connecting plate 4 to synchronously move, the connecting plate 4 drives the first T-shaped key 5 to slide along the inner cavity of the first chute 8, and after the housing 1 and the door plate 2 are separated, and the connecting plate 4 can rotate around the first T-shaped key 5 to the side of the housing 1, so that maintenance personnel can continue to rotate to the door plate 1.

Referring to fig. 11, the seal failure alarm device includes a housing 38, the housing 38 is fixedly connected to a side wall of an inner cavity of the housing 1, a plurality of ventilation holes 39 are formed around the housing 38, a buzzer 40 is fixedly connected to one side of an outer wall of the housing 38 away from the housing 1, a circuit board 41 is fixedly connected to an upper portion of the inner cavity of the housing 38, a main control circuit board 42 is fixedly connected to a lower portion of the inner cavity of the housing 38, a flammable gas detector 43 is electrically connected to one side of the main control circuit board 42, the circuit board 41 is electrically connected to the main control circuit board 42, the main control circuit board 42 is electrically connected to the buzzer 40, the flammable gas detector 43 detects whether the flammable gas is contained in the gas entering the housing 38, that is, if the flammable gas outside the housing 1 enters the inner cavity of the housing 1, the inner cavity two of the housing 38 contacts with the flammable gas detector 43 through the ventilation holes 39, if the buzzer 40 gives an alarm, so as to alert a worker to disconnect power supply to the distribution box in time, thereby avoiding an explosion accident.

Claims (10)

1. The utility model provides an explosion-proof block terminal, includes the casing, its characterized in that, one side sliding connection of casing has the door plant, the lateral wall upper portion fixedly connected with symmetry of the inner chamber of casing fixed plate, the door plant has been kept away from one side middle part of casing and has been seted up the third spout, third spout inner chamber horizontal sliding connection has the button, the second recess of symmetry has been seted up at the both ends of door plant, the second recess is L type groove, comprises horizontal groove and vertical groove jointly, be provided with the stop gear who is used for spacing fixed door plant between fixed plate and the door plant, when pressing the button and promote the in-process that the door plant is close to the fixed plate, stop gear's output can be close to the second recess and joint in horizontal groove.

2. The explosion-proof distribution box according to claim 1, wherein a second clamping block is vertically and slidably connected in the vertical groove, one side, close to the button, of the second clamping block is elastically connected with one side, close to the button, of the vertical groove through a first spring, a driven plate is fixedly connected with the middle part of one side, close to the fixed plate, of the lower end of the second clamping block, a second sliding groove matched with the driven plate is formed in the middle of an inner cavity of the door plate, and the driven plate is vertically and slidably connected in the second sliding groove.

3. The explosion-proof distribution box according to claim 2, wherein the second sliding groove is communicated with the third sliding groove, the button is elastically connected with the side wall of the second sliding groove through a second spring, a symmetrical third sliding groove is fixedly connected to one side, close to the second sliding groove, of the button, the distance between the symmetrical third sliding grooves is equal to the width of the driven plate, the distance between the symmetrical driven plates is larger than the height of the second clamping block, a symmetrical driven rod is fixedly connected to one side, far away from the button, of the third sliding groove, a driven groove matched with the driven rod is formed in the side wall of one end, far away from the second clamping block, of the driven plate, and the driven groove is inclined towards the position where the second clamping block is located.

4. The explosion-proof distribution box according to claim 1, wherein the limiting mechanism comprises a movable plate, symmetrical fourth sliding grooves are formed in the upper side wall and the lower side wall of the shell, the movable plate is vertically and slidably connected in the fourth sliding grooves, one end, far away from the fixed plate, of the movable plate is elastically connected with one side wall, far away from the fixed plate, of the inner cavity of the fourth sliding groove through a third spring, one side, far away from the fixed plate, of the lower end of the movable plate is fixedly connected with a first clamping block, and one side, close to the door plate, of the fixed plate is slidably connected with a symmetrical connecting rod.

5. The explosion-proof power distribution box according to claim 4, wherein the connecting rod is elastically connected with the inner cavity side wall of the fixed plate through a fourth spring, a cross rod is fixedly connected with one side, away from the fixed plate, of the connecting rod in a symmetrical mode, the cross rod is slidably connected with the inner cavity side wall of the shell, a vertical rod is fixedly connected with one side, close to the button, of the upper end of the cross rod, the side wall of the vertical rod is attached to the movable plate, and a driving rod is fixedly connected with one side, close to the movable plate, of the vertical rod.

6. The explosion-proof power distribution box according to claim 5, wherein a groove is formed in the lower portion of the movable plate, the driving rod is slidably connected in the groove, a groove No. three is formed in the upper portion of one end of the groove close to the fixed plate, a groove No. two is formed in one side of the groove No. three, which is far away from one end of the groove and is close to the fixed plate, an arc groove is formed in one side of the groove No. two, which is far away from the groove No. three, a protrusion is arranged among the groove No. three, the groove No. two and the arc groove, a groove No. four is formed in the middle of one side of the protrusion, which is close to the groove No. three, and a baffle is rotatably connected to the side wall of one end of the groove No. four, which is close to the groove No. one.

7. The explosion-proof power distribution box according to claim 6, wherein the baffle is composed of a horizontal rod and a vertical rod, the horizontal rod is parallel to the bottom surface of the first groove and is located at the joint of the third groove and the first groove, the vertical rod is located at the joint of the arc groove and the first groove, the fifth groove is formed in the lower portion of the fourth groove, a driven block is horizontally and slidably connected with the inner cavity of the fifth groove, one end, far away from the third groove, of the driven block is elastically connected with the inner cavity side wall of the fifth groove through a fifth spring, a second balance rod is slidably connected with the middle part of one end, far away from the third groove, of the driven block, and one end, far away from the driven block, of the second balance rod is fixedly connected with the side wall of the fifth groove.

8. The explosion-proof distribution box according to claim 7, wherein a third clamping block is arranged at the joint of the second groove and the arc groove, a third groove matched with the third clamping block is formed in one side, close to the arc groove, of the second groove, a symmetrical first balance rod is fixedly connected to the side wall of the inner cavity of the third groove, one side, far away from the third groove, of the first balance rod is in sliding connection with the third clamping block, the third clamping block is in elastic connection with the third groove through a sixth spring, one side, far away from the second groove, of the third clamping block is arc-shaped, and an inclined plane is formed in one side, close to the second groove, of the third clamping block.

9. The explosion-proof power distribution box according to claim 1, wherein a symmetrical first sliding groove is formed in one side of the outer wall of the shell, a first T-shaped key is connected in the first sliding groove in a sliding mode, a first groove is formed in the middle of the first T-shaped key, a connecting plate is connected to one side, away from the fixed plate, of an inner cavity of the first groove in a rotating mode, one end, away from the first T-shaped key, of the connecting plate is fixedly connected with a second T-shaped key, and one side, away from the fixed plate, of the second T-shaped key is connected with the door plate in a sliding mode.

10. The explosion-proof power distribution box according to any one of claims 1-9, further comprising a seal failure alarm device, wherein the seal failure alarm device comprises a housing, the housing is fixedly connected to the side wall of the inner cavity of the shell, a plurality of ventilation holes are formed in the periphery of the housing, a buzzer is fixedly connected to one side, far away from the shell, of the outer wall of the housing, a circuit board is fixedly connected to the upper portion of the inner cavity of the housing, a main control circuit board is fixedly connected to the lower portion of the inner cavity of the housing, a combustible gas detector is electrically connected to one side of the main control circuit board, and the circuit board is electrically connected to the main control circuit board, and the main control circuit board is electrically connected to the buzzer.