Explosion-proof junction box with high sealing performance

Abstract

The utility model belongs to the technical field of junction boxes, and particularly relates to a high-sealing explosion-proof junction box which comprises a box body, a cover plate is detachably connected above the box body, a sealing assembly is arranged between the box body and the cover plate, and external gas and moisture are prevented from entering the box body to affect electricity utilization safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of junction boxes, and in particular relates to a highly sealed explosion-proof junction box. Background Art

[0002] The mining explosion-proof junction box is an electrical device designed for explosive environments such as coal mines. It is used to connect cables and provide safe electrical connections. During mining, the existing explosion-proof junction boxes are not very well sealed, and water vapor easily enters and is easily damaged. If the external dangerous gas enters the junction box and reaches a certain concentration, if the internal wiring board generates an arc, it is easy to cause a spark in the box, which is very likely to cause an explosion. Utility Model Content

[0003] The purpose of the utility model is to provide a high-sealing explosion-proof junction box to achieve a high sealing effect in view of the above-mentioned existing technical problems.

[0004] In view of this, the utility model provides a highly sealed explosion-proof junction box, wherein a cover plate is provided above the box body, and a sealing assembly is provided between the box body and the cover plate, wherein the sealing assembly includes a circular ring plate, a circular ring plate is provided between the outer wall of the box body and the inner wall of the cover plate, annular grooves are provided on the upper and lower sides of the circular ring plate, a plurality of fixed tubes are evenly distributed on the inner wall of the circular groove, a through hole is provided on the side wall of the fixed tube, a spring is provided in the inner cavity of the fixed tube, movable rods are fixedly connected at both ends of the spring, the movable rods are movably connected to the fixed tube, a sealing ring is provided in the annular groove, a fixed tube extends from one end of the movable rod away from the spring and is respectively fixedly connected to the sealing rings on both sides, an air valve is fixedly connected to the outer wall of the circular ring plate, the air valve is connected to the inner cavity of the annular groove, and an inflation groove is provided at a position opposite to the cover plate and the air valve.

[0005] In the above technical solution, further, a first sealing ring is fixedly connected to the side wall of the sealing ring.

[0006] In the above technical solution, further, a second sealing ring is symmetrically fixedly connected to the inner and outer side walls of the circular ring plate.

[0007] In the above technical solution, further, the through holes are symmetrically arranged on the side wall of the fixed tube.

[0008] In the above technical solution, further, the depth of the annular groove is set greater than the width of the sealing ring.

[0009] In the above technical solution, further, the cross section of the first sealing ring is concave.

[0010] In the above technical solution, further, first connecting blocks are fixedly provided at both ends of the side wall of the box body, and second connecting blocks are fixedly provided at both ends of the side wall of the cover plate, and the first connecting block and the second connecting block are fixedly connected by bolts.

[0011] In the above technical solution, further, the outer sides of the box body and the cover are coated with a waterproof coating.

[0012] In the above technical solution, further, a sealing joint is provided on the side wall of the box body.

[0013] The beneficial effects of the utility model are:

[0014] 1. A sealing component is provided between the box body and the cover plate to prevent external gas and moisture from entering the box body and affecting electrical safety.

[0015] 2. The cross section of the first sealing ring is concave, which can achieve multi-side sealing of the first sealing ring.

[0016] 3. The outside of the box body and cover is coated with a waterproof coating to prevent water vapor from remaining and penetrating the box body and cover, affecting the safety of electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the internal structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the sealing component structure of the utility model;

[0020] Figure 4 This utility model Figure 2 A partial enlarged view of the middle A;

[0021] The markings in the figure are: 1-box body, 2-cover plate, 3-circular ring plate, 4-annular groove, 5-fixed tube, 6-through hole, 7-spring, 8-movable rod, 9-sealing ring, 10-air valve, 11-first sealing ring, 12-second sealing ring, 13-first connecting block, 14-second connecting block, 15-sealing joint, 16-inflating groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0023] Embodiment 1:

[0024] This embodiment provides a highly sealed explosion-proof junction box, including:

[0025] Box body 1;

[0026] A cover plate 2 is provided on the box body 1;

[0027] A sealing component is provided between the box body 1 and the cover plate 2;

[0028] The sealing components include:

[0029] A circular ring plate 3 is provided between the outer wall of the box body 1 and the inner wall of the cover plate 2;

[0030] Annular groove 4, annular groove 4 is provided on both upper and lower sides of the annular plate 3;

[0031] Fixed tube 5, a plurality of fixed tubes 5 are evenly distributed on the inner wall of the annular groove 4;

[0032] A through hole 6 is provided on the side wall of the fixed tube 5;

[0033] Spring 7, a spring 7 is arranged in the inner cavity of the fixed tube 5;

[0034] The movable rod 8 is fixedly connected to both ends of the spring 7, and the movable rod 8 is movably connected to the fixed tube 5;

[0035] Sealing ring 9, a sealing ring 9 is arranged in the annular groove 4, and a fixed tube 5 extends from one end of the movable rod 8 away from the spring 7 and is fixedly connected to the sealing rings 9 on both sides;

[0036] The air valve 10 is fixedly connected to the outer wall of the annular plate 3, and the air valve 10 is connected to the inner cavity of the annular groove 4;

[0037] An air filling groove 16 is provided at a position where the cover plate 2 and the air valve 10 are opposite to each other.

[0038] It can be seen from this embodiment that a cover plate 2 is detachably connected to the top of the box body 1, and a sealing component is provided between the box body 1 and the cover plate 2 to prevent external gas and moisture from entering the box body 1 and affecting the safety of electricity use.

[0039] When in use, first, according to actual sealing needs, the external inflation device is inserted into the air valve 10 through the inflation groove 16, and the inner cavity of the air valve 10 is inflated by the external inflation device. The gas enters the inner cavity of the annular groove 4 through the air valve 10. Because the annular grooves 4 on both sides are connected by the through hole 6 and the fixed tube 5, the annular grooves 4 on both sides can be filled with gas at this time. When a certain air pressure is added to the annular grooves 4 on both sides, the inflation device is stopped and pulled out of the air valve 10. At this time, the sealing ring 9 in the annular groove 4 has a certain active force under the joint action of air pressure and spring 7, so that the sealing ring 9 fits tightly on the box body 1 and the cover plate 2 to achieve a high sealing effect.

[0040] Embodiment 2:

[0041] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] A first sealing ring 11 is fixedly connected to the side wall of the sealing ring 9 .

[0043] It can be seen from this embodiment that the sealing between the box body 1 and the cover plate 2 is ensured by the first sealing ring 11 .

[0044] Embodiment 3:

[0045] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] The second sealing ring 12 is symmetrically fixedly connected to the inner and outer side walls of the annular plate 3 .

[0047] It can be seen from this embodiment that the inner and outer side walls of the annular plate 3 are sealed by the second sealing ring 12 .

[0048] Embodiment 4:

[0049] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] The through holes 6 are symmetrically arranged on the side wall of the fixing tube 5 .

[0051] It can be seen from this embodiment that the through holes 6 are symmetrically arranged on the side wall of the fixed tube 5, which facilitates the gas to enter the annular grooves 4 on both sides and makes the gas pressure on both sides the same, resulting in a good use effect.

[0052] Embodiment 5:

[0053] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0054] The depth of the annular groove 4 is set greater than the width of the sealing ring 9 .

[0055] It can be seen from this embodiment that the depth of the annular groove 4 is greater than the width of the sealing ring 9 , so that the inner cavity of the annular groove 4 can be filled with gas at a certain pressure.

[0056] Embodiment 6:

[0057] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] The first sealing ring 11 has a concave cross section.

[0059] It can be seen from this embodiment that the cross section of the first sealing ring 11 is concave, so that multi-side sealing of the first sealing ring 11 can be achieved.

[0060] Embodiment 7:

[0061] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] First connecting blocks 13 are fixedly provided at both ends of the side wall of the box body 1, and second connecting blocks 14 are fixedly provided at both ends of the side wall of the cover plate 2. The first connecting block 13 and the second connecting block 14 are fixedly connected by bolts.

[0063] It can be seen from the present embodiment that the first connecting block 13 and the second connecting block 14 are fixedly connected by bolts, so that the box body 1 and the cover plate 2 are fixedly connected.

[0064] Embodiment 8:

[0065] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] The outer sides of the box body 1 and the cover plate 2 are coated with a waterproof coating.

[0067] It can be seen from this embodiment that the outer sides of the box body 1 and the cover plate 2 are coated with a waterproof coating to prevent water vapor from remaining and penetrating the box body 1 and the cover plate 2 and affecting the safety of electricity use.

[0068] Embodiment 9:

[0069] This embodiment provides a highly sealed explosion-proof junction box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] The side wall of the box body 1 is provided with a sealing joint 15 .

[0071] It can be seen from this embodiment that a sealing joint 15 is provided on the side wall of the box body 1 .

[0072] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A highly sealed explosion-proof junction box, characterized in that: include: Box body (1); A cover plate (2), wherein the cover plate (2) is arranged above the box body (1); A sealing component, wherein a sealing component is provided between the box body (1) and the cover plate (2); Wherein, the sealing component comprises: A circular ring plate (3), wherein the circular ring plate (3) is arranged between the outer wall of the box body (1) and the inner wall of the cover plate (2); An annular groove (4), wherein the annular groove (4) is provided on both the upper and lower sides of the annular plate (3); A fixed tube (5), wherein a plurality of fixed tubes (5) are evenly distributed on the inner side wall of the annular groove (4); A through hole (6), wherein the side wall of the fixed tube (5) is provided with a through hole (6); A spring (7), wherein the inner cavity of the fixing tube (5) is provided with a spring (7); A movable rod (8), both ends of the spring (7) are fixedly connected with the movable rod (8), and the movable rod (8) is movably connected to the fixed tube (5); A sealing ring (9), wherein the sealing ring (9) is arranged in the annular groove (4), and a fixed tube (5) extends from one end of the movable rod (8) away from the spring (7) and is fixedly connected to the sealing rings (9) on both sides; An air valve (10), the outer wall of the annular plate (3) is fixedly connected with the air valve (10), and the air valve (10) is communicated with the inner cavity of the annular groove (4); An air filling groove (16) is provided at a position of the cover plate (2) opposite to the air valve (10).

2. A highly sealed explosion-proof junction box according to claim 1, characterized in that: A first sealing ring (11) is fixedly connected to the side wall of the sealing ring (9).

3. A highly sealed explosion-proof junction box according to claim 2, characterized in that: A second sealing ring (12) is symmetrically fixedly connected to the inner and outer side walls of the circular ring plate (3).

4. A highly sealed explosion-proof junction box according to claim 3, characterized in that: The through holes (6) are symmetrically arranged on the side wall of the fixed tube (5).

5. A highly sealed explosion-proof junction box according to claim 4, characterized in that: The depth of the annular groove (4) is set greater than the width of the sealing ring (9).

6. A highly sealed explosion-proof junction box according to claim 5, characterized in that: The first sealing ring (11) has a concave cross section.

7. A highly sealed explosion-proof junction box according to claim 6, characterized in that: The box body (1) has first connection blocks (13) fixedly disposed at both ends of the side wall, and the cover plate (2) has second connection blocks (14) fixedly disposed at both ends of the side wall. The first connection block (13) and the second connection block (14) are fixedly connected by bolts.

8. The highly sealed explosion-proof junction box according to claim 7, characterized in that: The outer sides of the box body (1) and the cover plate (2) are coated with a waterproof coating.

9. The highly sealed explosion-proof junction box according to claim 8, characterized in that: The side wall of the box body (1) is provided with a sealing joint (15).

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