Electric power electrical explosion-proof switch

Abstract

The utility model discloses a power electrical explosion-proof switch, which belongs to the technical field of explosion-proof switches and comprises a switch body, the switch body is covered with a protective shell, the protective shell comprises an outer shell, and the top of the outer shell is connected with a shell cover. The bottom of the shell is connected with a skirt shell, the skirt shell is connected with an ear shell, and the ear shell is in threaded connection with the switch body. The explosion-proof switch shell is specially designed for an explosion-proof switch, a protective shell mechanism is designed for the explosion-proof switch, part gaps are subjected to cover protection, combustible gas and dust invasion paths are reduced as much as possible, external explosive mixtures are effectively prevented from entering the switch shell, and the safety coefficient of the explosion-proof switch is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof switch, concretely relates to a kind of electric power electrical explosion -proof switch. BACKGROUND

[0002] In chemical, petroleum, natural gas and other industrial environments, there are a large number of combustible gas and dust, these substances once meet electric spark or high temperature can cause explosion accident, bring huge loss to personnel life and property;Therefore, the electrical equipment used in such dangerous occasions must have good explosion-proof performance to ensure the safety and reliability of operation.

[0003] When the traditional electrical switch is used in these dangerous environments, electric arc or spark may be generated during the opening and closing of the internal circuit, at this time, if combustible gas and dust enter the switch housing from the gap between the components, an explosion accident may occur.

[0004] Therefore, it is necessary to develop an explosion-proof switch that can effectively prevent external explosive mixture from entering the switch housing. SUMMARY

[0005] In view of the above shortcomings of the prior art, the utility model provides an electric power electrical explosion -proof switch;The electric power electrical explosion -proof switch is designed for explosion -proof switch, and the application designs a protective shell mechanism for explosion -proof switch, covers the gap between the components, reduces the invasion path of combustible gas and dust as much as possible, effectively prevents external explosive mixture from entering the switch housing, and improves the safety factor of explosion -proof switch.

[0006] To solve the above technical problems, the utility model provides an electric power electrical explosion -proof switch, which comprises a switch body, a protective shell is connected to the switch body, the protective shell comprises a shell, and the top of the shell is connected with a shell cover;The bottom of the shell is connected with a skirt shell, the skirt shell is connected with an ear shell, and the ear shell is threadedly connected with the switch body.

[0007] In further improvement of the utility model, one end of the top of the shell is rotatably connected to one end of the shell cover through a hinge, and the other end of the top of the shell is connected to the other end of the shell cover through an electromagnetic lock.

[0008] Through the above design, the switch body can be opened and closed more conveniently.

[0009] In further improvement of the utility model, the top of the shell is provided with an inner flange, a flange sealing ring is arranged on the inner flange, and the flange sealing ring abuts against the shell cover.

[0010] Through the above design, the gap between the shell cover and the shell can be sealed more conveniently.

[0011] In a further improvement of this utility model, a rebound button is provided on the inner flange, and the rebound button abuts against the shell cover.

[0012] The above design makes it easier to open the cover.

[0013] In a further improvement of this utility model, a skirt sealing ring is provided on the inner wall of the skirt shell, and the skirt sealing ring abuts against the switch body.

[0014] Through the above design, this solution can more easily seal the gap between the upper and lower components of the switch body.

[0015] In a further improvement of this utility model, an ear shell sealing ring is provided on the inner wall of the ear shell, and the ear shell sealing ring abuts against the switch body.

[0016] Through the above design, this solution can more easily seal the gap between the connecting lugs of the upper and lower components of the switch body.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model is specifically designed for explosion-proof switches. This application designs a protective shell mechanism for explosion-proof switches, which covers and protects the gaps between components, minimizes the intrusion paths of flammable gases and dust, effectively prevents external explosive mixtures from entering the switch housing, and improves the safety factor of explosion-proof switches. Attached Figure Description

[0019] To more clearly illustrate the background technology or the technical solution of this utility model, the accompanying drawings used in conjunction with the prior art or specific embodiments are briefly introduced below. Obviously, the structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Fig. 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0021] Fig. 2 This is an exploded structural diagram of a specific embodiment of the present utility model.

[0022] Fig. 3 This is a schematic diagram of the rebound button structure according to a specific embodiment of the present utility model.

[0023] As shown in the figure: 1, switch body; 2, protective shell; 3, shell; 4, shell cover; 5, skirt; 6, ear shell; 7, electromagnetic lock; 8, inner flange; 9, bounce button; 91, spring. DETAILED DESCRIPTION

[0024] In order to make the person skilled in the art better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.

[0025] Meanwhile, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in the specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. The change or adjustment of the relative relationship, without substantial change of the technical content, is also regarded as the scope of the utility model that can be implemented.

[0026] Meanwhile, in the description of the specification, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or integrally connected, or mechanically connected, or electrically connected, or directly connected, or indirectly connected through an intermediate medium, or the communication between two components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] When the conventional electrical switch is used in these dangerous environments, arc or spark may be generated in the process of opening and closing the internal circuit, at this time, if combustible gas and dust enter the switch shell from the gap between the components, explosion accident may occur.

[0028] Therefore, it is necessary to develop an explosion-proof switch which can effectively prevent the external explosive mixture from entering the inside of the switch shell.

[0029] The design concept of the application is to design a protection mechanism for the gap between the upper and lower parts of the explosion-proof switch, cover the gap between the parts with a protective shell, minimize the invasion path of combustible gas and dust, effectively prevent the external explosive mixture from entering the inside of the switch shell, and improve the safety factor of the explosion-proof switch.

[0030] As shown in Figs. 1-3 The application provides an explosion-proof switch, which comprises a switch body 1, a protective shell 2 connected to the switch body 1, an outer shell 3, a shell cover 4 connected to the top of the outer shell 3, a skirt shell 5 connected to the bottom of the outer shell 3, and an ear shell 6 connected to the skirt shell 5 and threadedly connected to the switch body 1.

[0031] The switch body 1 comprises an upper part and a lower part, which are threadedly connected through an upper connecting lug and a lower connecting lug; the outer shell 3 of the application covers the upper part, the skirt shell 5 covers the connecting gap between the upper part and the lower part, and the ear shell 6 covers the connecting gap between the upper connecting lug and the lower connecting lug; a blind threaded hole is arranged on the upper connecting lug, a threaded hole is arranged on the ear shell 6, and the threaded hole is threadedly connected to the blind threaded hole through a connecting bolt.

[0032] The outer shell 3 is connected to the shell cover 4 through a hinge at one end of the top of the outer shell 3, and is connected to the shell cover 4 through an electromagnetic lock 7 at the other end of the top of the outer shell 3.

[0033] Through the electromagnetic lock 7, other personnel cannot easily open the shell cover 4, thereby avoiding the misoperation of the explosion-proof switch by non-workers; the two parts of the electromagnetic lock 7 are arranged on an inner flange 8 and the bottom of the shell cover 4, respectively.

[0034] The inner flange 8 is arranged on the top of the outer shell 3, a flange sealing ring is arranged on the inner flange 8, and the flange sealing ring abuts against the shell cover 4; the flange sealing ring can be a rubber ring.

[0035] The inner flange 8 is arranged on the top of the outer shell 3, a flange sealing ring is arranged on the inner flange 8, and the flange sealing ring abuts against the shell cover 4; the flange sealing ring can be a rubber ring.

[0036] The inner wall of the skirt shell 5 is provided with a skirt shell sealing ring, and the skirt shell sealing ring abuts against the switch body 1; the skirt shell sealing ring can be a rubber ring.

[0037] The inner wall of the ear shell 6 is provided with an ear shell sealing ring, which is in abutment with the switch body 1.

[0038] Although the utility model has been described in detail by referring to the drawings and in combination with the preferred embodiments, the utility model is not limited thereto, and the person skilled in the art can make various equivalent modifications or replacements to the embodiments of the utility model without departing from the spirit and essence of the utility model, and these modifications or replacements shall be within the scope of the utility model / any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which shall be covered within the protection scope of the utility model, therefore, the protection scope of the utility model shall be subject to the protection scope of the claims.

Claims

1. An explosion-proof switch for electrical equipment, comprising a switch body, characterized in that, The switch body is covered by a protective shell, which includes an outer shell, a cover connected to the top of the outer shell, a skirt shell connected to the bottom of the outer shell, an ear shell connected to the skirt shell, and the ear shell being threadedly connected to the switch body.

2. The explosion-proof switch for electrical equipment according to claim 1, characterized in that, One end of the top of the outer shell is rotatably connected to one end of the cover via a hinge, and the other end of the top of the outer shell is magnetically engaged with the other end of the cover via an electromagnetic lock.

3. The explosion-proof switch for electrical equipment according to claim 1, characterized in that, The top of the outer shell is provided with an inner flange, and a flange sealing ring is provided on the inner flange, which abuts against the shell cover.

4. The explosion-proof switch for electrical equipment according to claim 3, characterized in that, A rebound button is provided on the inner flange, and the rebound button abuts against the shell cover.

5. The explosion-proof switch for electrical equipment according to claim 1, characterized in that, The inner wall of the skirt housing is provided with a skirt housing sealing ring, which abuts against the switch body.

6. The explosion-proof switch for electrical equipment according to claim 1, characterized in that, The inner wall of the ear shell is provided with an ear shell sealing ring, which abuts against the switch body.

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