CN202756005U - Safe explosion-proof decompression type fan cover - Google Patents
Safe explosion-proof decompression type fan cover Download PDFInfo
- Publication number
- CN202756005U CN202756005U CN 201220407765 CN201220407765U CN202756005U CN 202756005 U CN202756005 U CN 202756005U CN 201220407765 CN201220407765 CN 201220407765 CN 201220407765 U CN201220407765 U CN 201220407765U CN 202756005 U CN202756005 U CN 202756005U
- Authority
- CN
- China
- Prior art keywords
- fan cover
- pressure release
- lid
- type fan
- safe explosion
- 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
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Abstract
The utility model provides a safe explosion-proof decompression type fan cover, and relates to the technical field of coalmine production, in particular to the technical field of coalmine ventilating shaft protection. The safe explosion-proof decompression type fan cover comprises a cover body, wherein at least three groups of cylinders are symmetrically connected to the periphery of the cover body. When in installation, the other end of each group of the cylinders is fixed with a decompression shaft port base. The safe explosion-proof decompression type fan cover can effectively avoid accidents of personnel casualty or item damage caused by decomposition of the fan cover when overhigh downhole gas density leads to explosion, and is further beneficial for prolonging of service life of the fan cover. The safe explosion-proof decompression type fan cover can be used in infinitely repeated mode, and is simplified in structure, flexible and reliable in operation, and simple and convenient to maintain.
Description
Technical field
The utility model relates to the coal production technical field, particularly coalmine ventilation security protection technology field.
Background technology
In coal production, because the down-hole needs a large amount of new wind, thus at the well head place large fan is housed, to the down-hole air-supply, simultaneously, at pressure release well head of the side of ventilation stack excavation, and at the pressure release well head wind lid that is sealedly and fixedly connected.When the fire damp blast produces huge impact force, then by destroying the wind lid, discharge down-hole pressure from the pressure release well head, and the protection blower fan.
But the mode that is sealedly and fixedly connected of existing this wind lid and pressure release well head can make the ventilating shaft lid blow up under the huge impact force action of gas explosion generation, produces serious consequence.
Summary of the invention
The utility model purpose is to propose a kind of preventing to cover at the safety anti-explosive pressure release type wind that explosion time pressure release wind lid decomposes.
The utility model comprises lid, connects symmetrically at least three group cylinders in the periphery of lid.
During installation, the other end and the pressure release well head basis of respectively organizing cylinder of the present utility model fixed, when ventilating shaft internal pressure during more than or equal to operating pressure, but cylinder automatic operation, whole lid is made progress lifting and leaves the pressure release well head, but venting pressure, after the pressure release, the wind lid falls after rise to original position, relief valve autoshutdown, keeps the sealing between lid and the pressure release well head.
The decomposition of wind lid when the utility model can prevent effectively that the gas excessive concentration sets off an explosion in the well and cause casualties or the impaired accident of object to occur also helps the prolongation in the application life of wind lid.The utility model can unlimitedly be reused, and structure is simplified, flexible movements reliable, easy maintenance.
The utility model also arranges the pressure release through hole at lid, and strand connects loam cake on the pressure release through hole.
By the timely release pressure of pressure release through hole, loam cake self-return after the decompression.
In order to reach even pressure release, at least five of described pressure release through holes, in pressure release through hole of lid center arrangement, all the other four pressure release through holes distribute take the lid center as symmetrical centre.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is bowing to schematic diagram of Fig. 1.
The specific embodiment
As shown in Figure 1, 2, the utility model connects four groups, every group two cylinders 2 symmetrically in the periphery of lid 1.
In a center pressure release of lid 1 center arrangement through hole 3, all the other four pressure release through holes 4 that distribute take lid 1 center as symmetrical centre, and with the strand connected mode above each pressure release through hole, connect loam cake 5.
Claims (3)
1. safety anti-explosive pressure release type wind lid comprises lid, it is characterized in that connecting symmetrically at least three group cylinders in the periphery of lid.
2. described safety anti-explosive pressure release type wind covers according to claim 1, it is characterized in that at lid the pressure release through hole being set, and strand connects loam cake on the pressure release through hole.
3. described safety anti-explosive pressure release type wind covers according to claim 2, it is characterized in that at least five of described pressure release through holes, and in pressure release through hole of lid center arrangement, all the other four pressure release through holes distribute take the lid center as symmetrical centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407765 CN202756005U (en) | 2012-08-17 | 2012-08-17 | Safe explosion-proof decompression type fan cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407765 CN202756005U (en) | 2012-08-17 | 2012-08-17 | Safe explosion-proof decompression type fan cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756005U true CN202756005U (en) | 2013-02-27 |
Family
ID=47735192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407765 Expired - Fee Related CN202756005U (en) | 2012-08-17 | 2012-08-17 | Safe explosion-proof decompression type fan cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953382A (en) * | 2014-04-22 | 2014-07-30 | 扬州市江隆矿业设备有限公司 | Pressure releasing automatic reset air shaft anti-explosion cover |
| CN107152301A (en) * | 2017-07-25 | 2017-09-12 | 河南理工大学 | A kind of leading explosion venting device of explosion-proof door of coal miine vertical shaft and explosion proof door |
-
2012
- 2012-08-17 CN CN 201220407765 patent/CN202756005U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953382A (en) * | 2014-04-22 | 2014-07-30 | 扬州市江隆矿业设备有限公司 | Pressure releasing automatic reset air shaft anti-explosion cover |
| CN103953382B (en) * | 2014-04-22 | 2015-12-23 | 扬州市江隆矿业设备有限公司 | Pressure release type automatically resets ventilating shaft Explosion-proof cap |
| CN107152301A (en) * | 2017-07-25 | 2017-09-12 | 河南理工大学 | A kind of leading explosion venting device of explosion-proof door of coal miine vertical shaft and explosion proof door |
| CN107152301B (en) * | 2017-07-25 | 2019-05-03 | 河南理工大学 | A kind of leading explosion venting device of explosion-proof door of coal miine vertical shaft and explosion proof door |
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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: 20130227 Termination date: 20160817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |