Explosion-proof isolation sealing box

Abstract

The utility model discloses an explosion-proof isolation sealing box, which comprises a main box body, an auxiliary box body connected with the main box body and a screwed plug in threaded connection with the auxiliary box body, one side of the screwed plug is respectively provided with a threaded part and a convex ring, a third sealing ring is arranged between the convex ring and the threaded part, one end of the auxiliary box body is provided with a sealing groove matched with the convex ring, and the other end of the auxiliary box body is provided with a second sealing ring. An annular groove is formed in one side of the convex ring, a containing groove is further formed in the auxiliary box body, the containing groove is communicated with the sealing groove, a first sealing ring is installed between the containing groove and the annular groove, a conical part is arranged at one end of the threaded part, a frustum matched with the conical part is arranged on the inner side wall of the auxiliary box body, and a conical sealing gasket is installed on the frustum; through the arrangement of the first sealing ring, the third sealing ring and the conical sealing gasket, multiple sealing effects can be achieved, reliable sealing between the screwed plug and the auxiliary box body is ensured, the leakage condition is avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof, in particular to an explosion-proof isolation sealing box. Background Art

[0002] Explosion-proof isolation sealing boxes are mainly used to seal and isolate the joints of electrical lines in explosive gas environments to prevent flammable gases or steam from entering the electrical system, thereby ensuring the safe operation of electrical equipment. Some explosion-proof isolation sealing boxes also have a drainage function and are suitable for places where condensed water may accumulate in pipes. During use, it is necessary to fill the sealing putty into the box body. After the putty solidifies, screw on the screw plug for sealing.

[0003] The sealing effect between the thread plug and the box body of the existing explosion-proof isolation sealing box is poor, and leakage is prone to occur, which may cause the flammable gas to leak into the non-explosion-proof area. Once encountering an ignition source, it may cause a fire or explosion accident. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof isolation sealing box to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof isolation sealing box, comprising a main box body, a sub-box body connected to the main box body, and a screw plug threadedly connected to the sub-box body, one side of the screw plug is respectively provided with a threaded portion and a convex ring, a third sealing ring is installed between the convex ring and the threaded portion, one end of the sub-box body is provided with a sealing groove matching with the convex ring, one side of the convex ring is provided with an annular groove, the sub-box body is also provided with a accommodating groove, and the accommodating groove is connected with the sealing groove, a first sealing ring is installed between the accommodating groove and the annular groove, one end of the threaded portion is provided with a conical portion, the inner side wall of the sub-box body is provided with a frustum matching with the conical portion, and a conical sealing gasket is installed on the frustum.

[0006] As a preferred solution of the utility model, the thread plug is threadably connected to the auxiliary box body through a threaded portion.

[0007] As a preferred solution of the utility model, a drainage pipe is provided on the outer side of the auxiliary box body, and a screw is threadedly connected to the drainage pipe.

[0008] As a preferred solution of the utility model, a second sealing ring is provided between the screw and the drain pipe.

[0009] As a preferred solution of the present utility model, the main box body and the auxiliary box body are an integrally formed structure.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can play multiple sealing roles by providing the first sealing ring, the third sealing ring and the conical sealing gasket, and the conical portion and the frustum can cooperate to compress the conical sealing gasket, the convex ring can compress the first sealing ring, and the thread plug can compress the third sealing ring, thereby improving the sealing effect, ensuring a reliable seal between the thread plug and the auxiliary box body, avoiding leakage, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a front cross-sectional view of the utility model;

[0013] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0014] Figure 4 For this utility model Figure 2 The enlarged view of point B in the middle;

[0015] Figure 5 It is a structural schematic diagram of the wire plug of the utility model.

[0016] In the figure: 1. main box body; 2. sub-box body; 3. screw plug; 4. drain pipe; 5. screw; 6. annular groove; 7. convex ring; 8. sealing groove; 9. first sealing ring; 10. accommodating groove; 11. threaded part; 12. conical part; 13. conical sealing gasket; 14. frustum; 15. second sealing ring; 16. third sealing ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 5The utility model provides a technical solution: an explosion-proof isolation sealing box, comprising a main box body 1, a sub-box body 2 connected to the main box body 1, and a plug 3 threadedly connected to the sub-box body 2, one side of the plug 3 is respectively provided with a threaded portion 11 and a convex ring 7, a third sealing ring 16 is installed between the convex ring 7 and the threaded portion 11, the third sealing ring 16 is used to seal between the plug 3 and the sub-box body 2, one end of the sub-box body 2 is provided with a sealing groove 8 matched with the convex ring 7, one side of the convex ring 7 is provided with an annular groove 6, the annular groove 6 allows the convex ring 7 to fit more closely with the first sealing ring 9, thereby improving the sealing effect of the first sealing ring 9, the sub-box body 2 is also provided with a receiving groove 10, the receiving groove 10 can limit the first sealing ring 9 to prevent the first sealing ring 9 from deflecting, The accommodating groove 10 is communicated with the sealing groove 8, and a first sealing ring 9 is installed between the accommodating groove 10 and the annular groove 6. The first sealing ring 9 is used to seal between the convex ring 7 and the auxiliary box body 2. A conical portion 12 is provided at one end of the threaded portion 11, and the inner side wall of the auxiliary box body 2 is provided with a frustum 14 that matches the conical portion 12. The frustum 14 and the conical portion 12 can cooperate to compress the conical portion 12 to improve the sealing effect of the conical sealing gasket 13. A conical sealing gasket 13 is installed on the frustum 14. The conical sealing gasket 13 is used to seal between the threaded portion 11 and the frustum 14. The conical sealing gasket 13, the third sealing ring 16 and the first sealing ring 9 can all play a sealing role between the thread plug 3 and the auxiliary box body 2 to ensure that the thread plug 3 is well sealed. The material of the conical sealing gasket 13 is rubber.

[0019] The thread plug 3 is threadably connected to the auxiliary box body 2 via the threaded portion 11 .

[0020] Among them, a drain pipe 4 is provided on the outside of the auxiliary box body 2. The drain pipe 4 can effectively drain water when condensed water may accumulate in the main box body 1, thereby improving safety and reliability. A screw 5 is threadedly connected to the drain pipe 4, and the screw 5 is used to seal the drain pipe 4.

[0021] A second sealing ring 15 is provided between the screw 5 and the drain pipe 4 , and the second sealing ring 15 is used to improve the sealing between the screw 5 and the drain pipe 4 .

[0022] The main box body 1 and the auxiliary box body 2 are integrally formed to ensure that the main box body 1 and the auxiliary box body 2 are firmly connected.

[0023] Specifically, when the cable on the main box body 1 is installed, remove the screw plug 3, fill the sealing filler into the main box body 1 from the auxiliary box body 2, and when the sealing filler is solidified, screw on the screw plug 3, the convex ring 7 presses the first sealing ring 9 to play the first sealing role, the screw plug 3 presses the third sealing ring 16 to play the second sealing role, and the conical part 12 and the frustum 14 cooperate to press the conical sealing gasket 13 to play the third sealing role, ensuring that the screw plug 3 and the auxiliary box body 2 are reliably sealed to avoid leakage.

[0024] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0026] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof isolation sealing box, comprising a main box body (1), a sub-box body (2) connected to the main box body (1), and a screw plug (3) threadedly connected to the sub-box body (2), characterized in that: A threaded portion (11) and a convex ring (7) are respectively provided on one side of the thread plug (3); a third sealing ring (16) is installed between the convex ring (7) and the threaded portion (11); a sealing groove (8) matching with the convex ring (7) is provided on one end of the auxiliary box body (2); an annular groove (6) is provided on one side of the convex ring (7); a receiving groove (10) is also provided on the auxiliary box body (2); and the receiving groove (10) is communicated with the sealing groove (8); a first sealing ring (9) is installed between the receiving groove (10) and the annular groove (6); a conical portion (12) is provided on one end of the threaded portion (11); a frustum (14) matching with the conical portion (12) is provided on the inner side wall of the auxiliary box body (2); a conical sealing gasket (13) is installed on the frustum (14).

2. The explosion-proof isolation sealed box according to claim 1, characterized in that: The thread plug (3) is threadably connected to the auxiliary box body (2) via a threaded portion (11).

3. The explosion-proof isolation sealed box according to claim 1, characterized in that: A drainage pipe (4) is provided on the outer side of the auxiliary box body (2), and a screw (5) is threadedly connected to the drainage pipe (4).

4. The explosion-proof isolation sealed box according to claim 3, characterized in that: A second sealing ring (15) is provided between the screw (5) and the drain pipe (4).

5. The explosion-proof isolation sealed box according to claim 1, characterized in that: The main box body (1) and the auxiliary box body (2) are an integrally formed structure.

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