CN202371260U - Explosion-proof inner cavity sealing structure for junction box of valve electric device - Google Patents
Explosion-proof inner cavity sealing structure for junction box of valve electric device Download PDFInfo
- Publication number
- CN202371260U CN202371260U CN2011203926121U CN201120392612U CN202371260U CN 202371260 U CN202371260 U CN 202371260U CN 2011203926121 U CN2011203926121 U CN 2011203926121U CN 201120392612 U CN201120392612 U CN 201120392612U CN 202371260 U CN202371260 U CN 202371260U
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- explosion
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- screw
- junction box
- inner cavity
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Abstract
The utility model relates to an explosion-proof inner cavity sealing structure for a junction box of a valve electric device. The explosion-proof inner cavity sealing structure comprises a main box body and the junction box, wherein the main box body and the junction box are connected by an embedded hexagon socket screw, a seal ring is arranged on the contact surface between the main box body and the junction box, an explosion-proof screw adhered with binder is mounted in an outside explosion-proof screw hole of the hexagon socket screw, and a compression ring fixedly connected with the junction box is arranged on the outer side of the explosion-proof screw. The explosion-proof inner cavity sealing structure is characterized in that: a sealing gasket is arranged between the flame-proof screw and the hexagon socket screw. With the adoption of the structure, the sealing gasket is compressed by the explosion-proof screw during assembly, so the sealing gasket and the inner hole of the explosion-proof screw hole form good flexible sealing, and further, a better sealing effect is achieved; and therefore, the explosion-proof inner cavity sealing structure has the advantages of simple structure, convenience in assembly, reliable explosion proof performance, reliable sealing property and the like.
Description
Technical field
The utility model belongs to the electric device for valve technical field, particularly relates to a kind of explosion-proof type electric device for valve terminal box bore seal structure.
Background technique
For the explosion-proof type electric device for valve, its anti-explosion terminal box portion cover is used for the introducing of power cable and actuating cable, and uses at certain other explosive mixture working environment of level according to the relevant regulations of NBS.The explosion-proof performance and the sealability of terminal box portion cover are one of subject matter of paying close attention in the structural design.
Known technology explosion-proof type electric device for valve terminal box inner-cavity structure is as shown in Figure 2: comprise main box body 1, terminal box 2, connector cover 7; Said main box body 1 adopts embedded hexagon socket head cap screw 3 to be connected with terminal box 2; Main box body 1 is provided with seal ring 4 with the surface of contact of terminal box 2; The flame proof screw 5 that is bonded with Bond is installed in the outside flame proof screw 2-1 of said hexagon socket head cap screw 3, and there is the pressure ring 6 that is fixedly connected with terminal box 2 in the outside of said flame proof screw 5.During assembling, with hexagon socket head cap screw 3 that terminal box 2 and main box body 1 is fastening, there is O-ring seals to guarantee sealing therebetween.Flame proof screw 5 its helical thread portion coating adhesives of packing into.Explosion-proof terminal board is packed in the cavity of terminal box, put O-ring seals therebetween, guarantee the sealing of itself and terminal box with the explosion-proof terminal board of pressure ring 6 and screw in compression.Connector cover 7 terminal box of packing into is formed the terminal connections chamber.
The main deficiency that exists in the known technology is: the threaded flame-proof type structure of flame proof screw and junction box body can not satisfy the seal request of IP67, IP68.When the anti-explosion electric device is immersed in water; Water can be through the plane between main box body and the terminal box, socket head screw the gap of side, flame proof screw and terminal box enter into the tenminal block chamber; Thereby cause short circuit between tenminal block corrosion or the terminal, influence the use of electric device for valve.
Summary of the invention
The utility model provides a kind of simple in structure, easy to assembly, explosion insulation performance and the reliable explosion-proof type electric device for valve of sealability terminal box bore seal structure for solving the technical problem that exists in the known technology.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of explosion-proof type electric device for valve terminal box bore seal structure; Comprise main box body, terminal box; Said main box body adopts embedded hexagon socket head cap screw to be connected with terminal box, and the surface of contact of main box body and terminal box is provided with seal ring, and the flame proof screw that is bonded with Bond is installed in the outside flame proof screw of said hexagon socket head cap screw; There is the pressure ring that is fixedly connected with terminal box in the outside of said flame proof screw, it is characterized in that: saidly between flame proof screw and hexagon socket head cap screw, be provided with sealing gasket.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme.Promptly in explosion-proof screw, place sealing gasket between explosion-proof bolt and the hexagon socket head cap screw; Sealing gasket is compressed by explosion-proof bolt; Sealing gasket and explosion-proof screw inwall form good flexible sealing like this; Therefore thereby play better sealing effect, said structure has advantages such as simple in structure, easy to assembly, explosion insulation performance and sealability be reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the known technology structural representation.
Among the figure: 1, main box body; 2, terminal box; 2-1, flame proof screw; 3, hexagon socket head cap screw; 4, seal ring; 5, flame proof screw; 6, pressure ring; 7, connector cover; 8, sealing gasket.
Embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1; A kind of explosion-proof type electric device for valve terminal box bore seal structure; Comprise main box body 1, terminal box 2, connector cover 7; Said main box body 1 adopts embedded hexagon socket head cap screw 3 to be connected with terminal box 2, and main box body 1 is provided with seal ring 4 with the surface of contact of terminal box 2, and the flame proof screw 5 that is bonded with Bond is installed in the outside flame proof screw 2-1 of said hexagon socket head cap screw 3; There is the pressure ring 6 that is fixedly connected with terminal box 2 in the outside of said flame proof screw 5, the said sealing gasket 8 that between flame proof screw and hexagon socket head cap screw, is provided with.
Adopt said structure sealing gasket when assembling to be compressed by explosion-proof bolt; Sealing gasket and explosion-proof screw inwall form good flexible sealing like this; Therefore thereby play better sealing effect, said structure has advantages such as simple in structure, easy to assembly, explosion insulation performance and sealability be reliable.
Claims (1)
1. explosion-proof type electric device for valve terminal box bore seal structure; Comprise main box body, terminal box, connector cover; Said main box body adopts embedded hexagon socket head cap screw to be connected with terminal box; The surface of contact of main box body and terminal box is provided with seal ring; The flame proof screw that is bonded with Bond is installed in the outside flame proof screw of said hexagon socket head cap screw, and there is the pressure ring that is fixedly connected with terminal box in the outside of said flame proof screw, it is characterized in that: saidly between flame proof screw and hexagon socket head cap screw, be provided with sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203926121U CN202371260U (en) | 2011-10-14 | 2011-10-14 | Explosion-proof inner cavity sealing structure for junction box of valve electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203926121U CN202371260U (en) | 2011-10-14 | 2011-10-14 | Explosion-proof inner cavity sealing structure for junction box of valve electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371260U true CN202371260U (en) | 2012-08-08 |
Family
ID=46594964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203926121U Expired - Fee Related CN202371260U (en) | 2011-10-14 | 2011-10-14 | Explosion-proof inner cavity sealing structure for junction box of valve electric device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666808A (en) * | 2017-09-28 | 2018-02-06 | 上海隽玺电子科技有限公司 | A kind of explosion-proof man-machine interface with the installation of combustible and explosive area explosion-proof tank panel type |
| CN111511140A (en) * | 2020-05-09 | 2020-08-07 | 安徽省含山县林头振皖铸造厂 | Low-pressure explosion-proof integrated end cover and manufacturing process thereof |
-
2011
- 2011-10-14 CN CN2011203926121U patent/CN202371260U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666808A (en) * | 2017-09-28 | 2018-02-06 | 上海隽玺电子科技有限公司 | A kind of explosion-proof man-machine interface with the installation of combustible and explosive area explosion-proof tank panel type |
| CN111511140A (en) * | 2020-05-09 | 2020-08-07 | 安徽省含山县林头振皖铸造厂 | Low-pressure explosion-proof integrated end cover and manufacturing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |