Protective box body of explosion-proof switch

Abstract

The utility model relates to the technical field of explosion-proof switches, and discloses a protection box body of an explosion-proof switch, which comprises a box body, reinforcing blocks are fixedly arranged on the left side and the right side of the box body, a gravity protection frame with a U-shaped structure is arranged between the two groups of reinforcing blocks in a sliding manner, and the upper end of the gravity protection frame penetrates through the reinforcing blocks and vertically extends upwards. A box cover is movably installed at the upper end of the gravity protection frame through a rotating shaft, an opening connecting part is fixedly spliced to an upper end opening of the box body, an embedded air bag of a concentric-square-shaped structure is fixedly installed on the top face of the opening connecting part in an embedded mode, and a fastening ring of a concentric-square-shaped structure is fixedly installed on the inner wall face of the box cover. According to the sealing device, the friction force between the metal particles in the embedded air bag and the fastening ring is increased through the formed concentric-square-shaped groove, stronger mechanical locking is formed, the upper end opening of the box body forms a highly-sealed structure through cooperation of the embedded air bag and the fastening ring, and the rapid and high-density sealing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof switch especially relates to a protection box of explosion -proof switch. BACKGROUND

[0002] Explosion -proof switch is a kind of electrical switch device specially designed for hazardous environment, can prevent the explosion accident caused by electric spark or high temperature. They are usually used in flammable and explosive places, such as petrochemical industry, coal mine, natural gas processing plant etc., to ensure the safety of equipment and personnel.

[0003] The protection box of explosion -proof switch plays a vital role in hazardous environment, its main purpose is to provide additional protection for explosion -proof switch, ensure safe operation under extreme conditions.

[0004] Through the retrieval application No.202222834412.8 discloses a protection box of explosion -proof switch, including explosion -proof switch mechanism, the outer side of explosion -proof switch mechanism is provided with protection mechanism, the protection mechanism includes protection box and front movable baffle, one end of the front movable baffle front side is provided with push-pull handle, the other end of the front movable baffle front side is provided with negative magnetic attraction.This technical solution is driven by push-pull handle and makes the front movable baffle slide, and the front movable baffle sliding makes dustproof sealing strip slide in the limiting slot, and the front movable baffle slides simultaneously and makes the negative magnetic attraction slide, when the negative magnetic attraction moves to the position close to the first positive magnetic attraction, is attracted by the first positive magnetic attraction, makes the front movable baffle be covered in the front side of protection box body, thereby the protection mechanism of explosion -proof switch is played the protection function, avoids the dust and other foreign matters through the gap into the inside of protection box body, thereby influences the use of explosion -proof switch mechanism.

[0005] Explosion -proof switch protection box usually needs high sealing to prevent explosive gas or dust into the inside of box, the sealing property of the box in the above technical solution is poor, and the explosion -proof switch protection box that the present has, if sealing element is not correctly in place or is damaged when installing, possibly form gap or uneven pressing force, influence the sealing effect of later period.

[0006] Therefore, we propose a protection box of explosion -proof switch. INVENTION CONTENT

[0007] The utility model mainly solves above -mentioned technical problem, provides a protection box of explosion -proof switch.

[0008] In order to realize the above purpose, the utility model adopts the following technical scheme, a protection box of explosion -proof switch, including box, the left and right sides of box are fixedly installed with reinforcing pad, and the U-shaped structure gravity protection frame is slidably installed between the two groups reinforcing pad, the upper end of gravity protection frame penetrates through reinforcing pad and vertically extends upwards, and the upper end of gravity protection frame is movably installed with lid through pivot.

[0009] The upper end of the box is fixedly spliced with an opening connecting part, and a back-shaped structure of an embedded air bag is fixedly installed on the top surface of the opening connecting part.

[0010] The inner wall surface of the box cover is fixedly installed with a fastening ring which is also back-shaped.

[0011] Preferably, the side wall surface of the box is provided with a negative pressure controller which is connected to the internal hollow structure of the embedded air bag through a pipeline.

[0012] Preferably, the internal hollow structure of the embedded air bag is filled with metal particles, and in the initial state, the embedded air bag is in a soft state, and when the embedded air bag is in a negative pressure state controlled by the negative pressure controller, the metal particles in the embedded air bag are pressed against each other.

[0013] Preferably, the inner and outer wall surfaces of the fastening ring are provided with back-shaped grooves.

[0014] Preferably, the outer side surface of the box cover is provided with a handle.

[0015] Preferably, the bottom surface of the reinforcing block is provided with a support.

[0016] Advantages

[0017] The utility model provides a protective box body of explosion -proof switch. Have the following advantages:

[0018] The protective box body of explosion -proof switch, when using, close the box cover, make the box cover horizontal distribution in the top of the box, control makes the box cover with embedded air bag is corresponding distribution up and down, when pulling down gravity protection frame, make gravity protection frame drive the box cover vertical down and cover on the box, directly fastening ring is completely extruded and fits into the embedded air bag of soft state, the embedded air bag of soft state is covered in the four sides of fastening ring, when controlling negative pressure controller starts, forms the negative pressure in the embedded air bag through negative pressure controller control, when the hollow structure of embedded air bag is in the negative pressure state, the metal particles in the embedded air bag are pressed against each other and tightly covered around the fastening ring, through the back -shaped groove of setting, increase the friction between the metal particles in the embedded air bag and the fastening ring, form stronger mechanical lock, and the mechanical lock effect makes the metal particles in the embedded air bag more stably embedded together, thereby enhancing the sealing performance of the whole, through the cooperation of the embedded air bag and the fastening ring, the upper end of the box forms a high sealing structure, and the effect of realizing fast high density sealing is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0020] The structures, proportions, sizes, etc. disclosed in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the box body of the present application;

[0023] Figure 3 It is a schematic diagram of the plane structure of the embedded air bag of the present application;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the inner wall surface of the box cover of the present application;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the fastening ring of the present application.

[0026] Legend:

[0027] 1, box body; 2, reinforcing block; 3, support; 4, gravity protection frame; 5, opening connecting part; 6, embedded air bag; 7, negative pressure controller; 8, box cover; 80, fastening ring; 81, back-shaped groove; 10, explosion-proof switch main body. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] Embodiment: A protective box body of an explosion-proof switch, such as Figures 1-3As shown, including the box 1, the box 1 left and right sides are fixedly installed with reinforcing block 2, reinforcing block 2 bottom surface is equipped with support 3, two groups of reinforcing block 2 between common slidingly installed with U-shaped structure's gravity protection frame 4, the upper end of gravity protection frame 4 penetrates through reinforcing block 2 vertically upwards and extends, the upper end of gravity protection frame 4 is rotatably installed with lid 8 through the shaft, the outer side of lid 8 is equipped with handle;

[0030] Further, the upper end of the box 1 is fixedly spliced with the opening connecting portion 5, the top surface of the opening connecting portion 5 is embeddedly fixedly installed with the inner-embedded air bag 6 of the back-shaped structure, the side wall surface of the box 1 is equipped with the negative pressure controller 7, the negative pressure controller 7 is connected to the internal hollow structure of the inner-embedded air bag 6 through the pipeline, the internal hollow structure of the inner-embedded air bag 6 is filled with metal particles, in the initial state, the inner-embedded air bag 6 is in a soft state, when the inner-embedded air bag 6 is in a negative pressure state controlled by the negative pressure controller 7, the metal particles in the inner-embedded air bag 6 are extruded, and a dense structure can be formed;

[0031] As shown in the figure, Figures 4-5 The inner wall surface of the lid 8 is fixedly installed with the fastening ring 80 which is also of back-shaped structure, the inner and outer wall surfaces of the fastening ring 80 are both provided with back-shaped grooves 81, through the cooperation of the fastening ring 80 and the inner-embedded air bag 6, the upper end of the box 1 forms a sealed structure, the inside of the box 1 is equipped with the explosion-proof switch main body 10, through control, the upper end of the box 1 is in a sealed structure, which protects the explosion-proof switch main body 10 in the box 1, and prevents explosive gas or dust from entering the inside of the box 1;

[0032] In use, close the lid 8, so that the lid 8 is horizontally distributed above the box 1, control the lid 8 and the inner-embedded air bag 6 to be distributed in an upper and lower corresponding manner, at this time, pull down the gravity protection frame 4, so that the gravity protection frame 4 drives the lid 8 to vertically downwardly cover on the box 1, directly extrude the fastening ring 80 to completely fit into the inner-embedded air bag 6 in a soft state, and the inner-embedded air bag 6 in a soft state is wrapped around the inner and outer four sides of the fastening ring 80, at this time, control the negative pressure controller 7 to start, form a negative pressure in the inner-embedded air bag 6 through the negative pressure controller 7, when the internal hollow structure of the inner-embedded air bag 6 is in a negative pressure state, the metal particles in the inner-embedded air bag 6 are extruded and tightly wrapped around the fastening ring 80, through the back-shaped grooves 81, increase the friction between the metal particles in the inner-embedded air bag 6 and the fastening ring 80, form a stronger mechanical lock, the mechanical lock effect makes the metal particles in the inner-embedded air bag 6 more stably embedded together, thereby enhancing the sealing performance of the whole, through the cooperation of the inner-embedded air bag 6 and the fastening ring 80, the upper end of the box 1 forms a highly sealed structure, and the lid 8 is conveniently opened through reverse operation.

[0033] The working principle of the utility model:

[0034] In use, the box cover 8 is closed, and the box cover 8 is horizontally distributed above the box body 1, and the box cover 8 is controlled to be correspondingly distributed above and below the embedded air bag 6, at this time, the gravity protection frame 4 is pulled downward, the gravity protection frame 4 drives the box cover 8 to vertically cover the box body 1, the direct fastening ring 80 is completely extruded and fitted into the embedded air bag 6 in a soft state, the embedded air bag 6 in a soft state is wrapped around the inside and outside of the fastening ring 80, at this time, the negative pressure controller 7 is controlled to be started, the negative pressure in the embedded air bag 6 is formed through the negative pressure controller 7, when the hollow structure in the embedded air bag 6 is in a negative pressure state, the metal particles in the embedded air bag 6 are extruded and tightly wrapped around the fastening ring 80, the friction between the metal particles in the embedded air bag 6 and the fastening ring 80 is increased through the formed back-shaped groove 81, a stronger mechanical locking is formed, the mechanical locking effect makes the metal particles in the embedded air bag 6 more stably embedded together, so that the sealing performance of the whole is enhanced, through the cooperation of the embedded air bag 6 and the fastening ring 80, the upper end of the box body 1 forms a high sealing structure, and the box cover 8 is conveniently opened through reverse operation.

[0035] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A protective enclosure for an explosion-proof switch, comprising an enclosure (1), characterized in that: The box (1) is fixedly installed with reinforcing blocks (2) on both the left and right sides. A U-shaped gravity protection frame (4) is slidably installed between the two sets of reinforcing blocks (2). The upper end of the gravity protection frame (4) extends vertically upward through the reinforcing blocks (2). The upper end of the gravity protection frame (4) is movably installed with a box cover (8) through a pivot. The upper port of the box (1) is fixedly spliced ​​with an opening connection part (5), and an embedded airbag (6) with a U-shaped structure is embedded and fixedly installed on the top surface of the opening connection part (5). The inner wall of the box cover (8) is fixedly installed with a fastening ring (80) that also has a U-shaped structure.

2. The protective enclosure for an explosion-proof switch according to claim 1, characterized in that: The side wall of the box (1) is provided with a negative pressure controller (7), which is connected to the hollow internal structure of the embedded airbag (6) through a pipeline.

3. The protective enclosure for an explosion-proof switch according to claim 2, characterized in that: The hollow structure inside the embedded airbag (6) is filled with metal particles. In the initial state, the embedded airbag (6) is in a soft state. When the negative pressure controller (7) controls the embedded airbag (6) to be in a negative pressure state, the metal particles inside the embedded airbag (6) are squeezed against each other.

4. The protective enclosure for an explosion-proof switch according to claim 1, characterized in that: The inner and outer walls of the fastening ring (80) are provided with spiral grooves (81).

5. The protective enclosure for an explosion-proof switch according to claim 1, characterized in that: The outer side of the box cover (8) is provided with a handle.

6. The protective enclosure for an explosion-proof switch according to claim 1, characterized in that: The bottom surface of the reinforcing block (2) is provided with a support (3).

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