CN203289245U - Explosion venting device on junction box - Google Patents
Explosion venting device on junction box Download PDFInfo
- Publication number
- CN203289245U CN203289245U CN2013203350968U CN201320335096U CN203289245U CN 203289245 U CN203289245 U CN 203289245U CN 2013203350968 U CN2013203350968 U CN 2013203350968U CN 201320335096 U CN201320335096 U CN 201320335096U CN 203289245 U CN203289245 U CN 203289245U
- Authority
- CN
- China
- Prior art keywords
- explosion venting
- venting
- explosion
- junction box
- terminal box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an explosion venting device on a junction box. When pressure inside an anti-explosion motor junction box is close to a pressure critical state, the pressure can be vented timely with the application of the explosion venting device on the junction box. Provided is the explosion venting device on the junction box. The explosion venting device comprises the junction box which is composed of a pedestal and a box cover. The box cover is provided with an explosion venting hole which is provided with an explosion venting film fixedly connected with the box cover in a sealing way. The joint part of the periphery of the explosion venting film and the box cover is tightly pressed by sawtooth-shaped pressing iron. The direction of tooth on the sawtooth-shaped pressing iron orients towards the middle of the explosion venting film.
Description
Technical field
The utility model relates to fire-proof motor, particularly the explosion venting device on terminal box.
Background technology
Fire-proof motor is a kind of a kind of motor that can use in inflammable and explosive factory, does not produce electric spark during operation.Adopt flameproof enclosure that the electric part that may produce spark, electric arc and dangerous temperature and explosive gas mixture are on every side separated.But this shell is also unsealed, and explosive gas mixture on every side can enter motor internal by the gap, each several part composition surface of shell.The reasons such as the dust that conducts electricity in the binding post insulating properties reduction in the terminal box of fire-proof motor, binding post surface carbonization, terminal box is too much, likely producing the strong point burning things which may cause a fire disaster such as spark, electric arc or high temperature in the middle of machine operation in terminal box, light terminal box implode dust or gas, pressure in the higher terminal box of sealing is increased, as pressure release not in time, after terminal box is born pressure because internal pressure surpasses the terminal box maximum, will blast, after blast occurs, the fragment casualty accident can occur occur, perhaps cause larger security incident.
Summary of the invention
Explosion venting device on the terminal box of in time pressure release while near the terminal box maximum, bearing pressure that the technical problem that the utility model solves is to provide a kind of explosion-proof motor junction box internal pressure.
Technical solutions of the utility model are done in such a way that the explosion venting device on terminal box, comprise terminal box, and terminal box is comprised of base and lid, and lid is provided with the venting of dust explosion hole, and the venting of dust explosion hole is provided with the venting of dust explosion film that is sealedly and fixedly connected with lid.
Described venting of dust explosion film surrounding and lid junction compress with the zigzag foundary weight, and the direction of the tooth on the zigzag foundary weight is in the middle of the venting of dust explosion film.
Technique effect of the present utility model is: because explosion-proof motor junction box is provided with the venting of dust explosion film, when the pressure in terminal box bears pressure near the terminal box maximum, the pressure release of at first breaking of venting of dust explosion film, thus effectively avoid fragment casualty accident or larger security incident to occur.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail, as shown in Figure 1, the explosion venting device on terminal box, comprise terminal box, terminal box is comprised of base and lid 1, and lid 1 is provided with the venting of dust explosion hole, and the venting of dust explosion hole is provided with the venting of dust explosion film 3 that is sealedly and fixedly connected with lid.
For making the venting of dust explosion film rupture more timely, venting of dust explosion film 3 surroundings and lid junction compress with zigzag foundary weight 2, and the direction of the tooth on zigzag foundary weight 2 is in the middle of the venting of dust explosion film.
Claims (2)
1. the explosion venting device on terminal box, comprise terminal box, and terminal box is comprised of base and lid, it is characterized in that: lid is provided with the venting of dust explosion hole, and the venting of dust explosion hole is provided with the venting of dust explosion film that is sealedly and fixedly connected with lid.
2. the explosion venting device on terminal box according to claim 1 is characterized in that: described venting of dust explosion film surrounding and lid junction compress with the zigzag foundary weight, and the direction of the tooth on the zigzag foundary weight is in the middle of the venting of dust explosion film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203350968U CN203289245U (en) | 2013-06-10 | 2013-06-10 | Explosion venting device on junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203350968U CN203289245U (en) | 2013-06-10 | 2013-06-10 | Explosion venting device on junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289245U true CN203289245U (en) | 2013-11-13 |
Family
ID=49545588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203350968U Expired - Fee Related CN203289245U (en) | 2013-06-10 | 2013-06-10 | Explosion venting device on junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289245U (en) |
-
2013
- 2013-06-10 CN CN2013203350968U patent/CN203289245U/en not_active Expired - Fee Related
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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: 20131113 Termination date: 20150610 |
|
| EXPY | Termination of patent right or utility model |