CN201874601U - Explosion-proof shaft cover for return-air vertical shafts - Google Patents
Explosion-proof shaft cover for return-air vertical shafts Download PDFInfo
- Publication number
- CN201874601U CN201874601U CN201020605082XU CN201020605082U CN201874601U CN 201874601 U CN201874601 U CN 201874601U CN 201020605082X U CN201020605082X U CN 201020605082XU CN 201020605082 U CN201020605082 U CN 201020605082U CN 201874601 U CN201874601 U CN 201874601U
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- lid
- explosion
- proof
- well
- return air
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Abstract
The utility model relates to an explosion-proof shaft cover for return-air vertical shafts, which comprises a shaft mouth, covers, counterweight supports, counterweight block sets and wire ropes. The explosion-proof shaft cover is characterized in that: recesses are reserved on the surfaces of shaft mouth seats on the two herringbone slopes of the shaft mouth, sponge rubber sealing gaskets are mounted in the recesses, the two covers are fastened on the slopes, a sealing gasket is mounted at the joint between the covers, fixed bases for the rotary shafts of the two covers are mounted on shaft mouth bases on the left and the right sides, the covers are articulated with the fixed bases, the counterweight supports are mounted on the shaft mouth bases on the left and the right sides, one of both ends of the wire rope at both sides of each counterweight support is connected with a counterweight block set, and the other end of the wire rope is connected with a cover. The explosion-proof shaft cover can release the blast wave energy of explosion in time, and cannot be easily damaged by the powerful blast airflow; the explosion-proof cover system can be automatically restored to the original position, so a ventilation system is stable and reliable; when inverted ventilation is needed, the explosion-proof shaft cover is easy to fix; and liquid seal is not needed, so equipment cannot be corroded.
Description
Technical field
The utility model relates to a kind of colliery return air vertical Explosion-proof cap, specifically, is a kind of mine ventilation system main fan safety guard---the explosion-proof well lid of return air vertical.
Background technology
Colliery return air vertical generally uses the hat type Explosion-proof cap now, and its structure is made up of the airtight cap of circle, counter-balanced carriage, balancing weight, liquid airproof groove and sealing fluid, and integral body is a round cap that is buckled on the vertical well head.When gas explosion accident takes place in the down-hole,, but still there is following defective though this hat type Explosion-proof cap can in time discharge the shock wave energy of blast:
1. (the hat type Explosion-proof cap is an integral body owing to the front energy that can not avoid shock wave, can't avoid shock wave, the ripple positive effect is bigger so be hit), damaged by powerful impact air-flow easily, perhaps fly away from well head, be subjected to the uneven or ground wind action at that time of counterweight, body, pull rope, well lid is difficult in time return to original position, cause ventilation system to recover relatively difficulty, can't guarantee that the ventilation of mine is reliable and stable.If well lid flies away from original position or distortion, then need to employ crane and just can finish the work that recovers well lid, cause major safety risks to recovering mine ventilation system immediately;
2. liquid is used in well head sealing, to explosion-proof be stamped corrosion and the sealing expense big;
3. when the needs inverted ventilation, fixing relatively more difficult.
Consider that from security standpoint effect and requirement that the colliery explosion-proof well lid of return air vertical should reach are:
1. can in time discharge explosion energy, the protection blower fan is not damaged by the shock wave of gas accident;
2. shock wave can in time reset later, and is reliable and stable to guarantee mine ventilation system;
3. when down-hole breaking out of fire accident, can be in time, fixing well lid easily, implement the inverted ventilation function.
Summary of the invention
The purpose of this utility model provides a kind of mine ventilation system main fan safety guard---the explosion-proof well lid of return air vertical; occur in the down-hole under the situation of powerful shock wave energy; energy is release of shock wave protecting energy main fan in time; simultaneously after shock wave energy is eliminated; can in time return to ventilation state, guarantee the reliability of mine ventilation system.
The explosion-proof well lid of return air vertical of the present utility model comprises well head, lid, counter-balanced carriage, the balancing weight external member, wire rope, the seat surface of slope, the herringbone two sides wellhead receptacle of well head leaves groove, the expanded rubber sealing mat is installed in the groove, two fan lids are buckled on the slope, joint between lid is equipped with sealing mat, the holder of two fan lid axis of rotation is installed on the well head pedestal of the left and right sides, lid and holder are hinged, counter-balanced carriage is installed on the well head pedestal of the left and right sides, wire rope one end at counter-balanced carriage two ends is connected with the balancing weight external member, and the other end links to each other with lid; When two fan lids covered, under the effect of counterweight, lid was suspended state.
Wire rope one end is that wire rope is connected with hook with being connected of balancing weight external member, and hook is connected with the balancing weight external member, and lock core is arranged on the hook, and lock core is connected with spacing rope, and the other end of spacing rope is connected on the counter-balanced carriage.
Well lid rotation open and close speed is by Damper Control, and each lid is installed two dampers, and damper is fixed on both sides, well seat front and back, and hinged with well seat and lid, damper structure is a cylinder piston type.
On the both sides inverted ventilation hasp is installed before and after well head well seat is outer, is needed the time spent can make things convenient in time and the lid overlap joint, implement inverted ventilation.
Sealing is lined with the hypotenuse that keeps out the wind, and the material of sealing mat is the expanded rubber pad.
When explosion-proof well head was big, in order to improve the rigidity of well lid, weight reduction can be used steel net structure.
Can respectively build a spacing prevention wall in the Explosion-proof cap left and right sides, cushion pad is installed on the wall, open the position with the control well lid.
The utility model has following advantage compared with prior art:
1, can in time discharge the shock wave energy of blast;
2, can avoid the front energy of shock wave, be difficult for being damaged by powerful impact air-flow;
3, the Explosion-proof cap system can automatically restore to original position, and ventilation system is reliable and stable;
4, when the needs inverted ventilation, fixedly than being easier to;
5, do not use liquid seal, equipment is not had corrosion phenomenon.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the explosion-proof well lid of the utility model return air vertical;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of the utility model lid when opening;
Fig. 4 is the steel net structure schematic diagram of lid;
Fig. 5 is the structural representation of sealing mat;
Fig. 6 is a structural representation of hanging balancing weight;
Fig. 7 is the structural representation that hook is thrown off balancing weight;
Fig. 8 is the structural representation of damper.
Among the figure: 1. lid, 2. expanded rubber pad, 3. sealing mat, 4. wire rope, 5. counter-balanced carriage, 6. spacing rope, 7. lock core, 8. hook, 9. balancing weight external member, 10. holder, 11. hasps, 12. dampers.
The specific embodiment
The utility model comprises well head, lid 1, counter-balanced carriage 5, balancing weight external member 9, wire rope 4, the wellhead receptacle seat surface on the slope, herringbone two sides of well head leaves groove, expanded rubber sealing mat 2 is installed in the groove, two fan lids 1 are buckled on the slope, joint between lid is equipped with sealing mat 3, the holder 10 of two fan lid axis of rotation is installed on the well head pedestal of the left and right sides, lid 1 is hinged with holder 10, counter-balanced carriage 5 is installed on the well head pedestal of the left and right sides, at counter-balanced carriage 5 two ends, wire rope 4 one ends are connected with balancing weight external member 9, and the other end links to each other with lid 1; When two fan lids covered, under the effect of counterweight, lid was suspended state.When the shock wave energy of blast arrives, can open well lid to both sides rapidly, avoid the front energy of shock wave, make lid be difficult for being damaged by powerful impact air-flow, protected the safety of main fan simultaneously.Explosion-proof well lid can automatically restore to original position, guarantees ventilation system safety, reliability.
Lid rotation open and close speed is by damper 12 controls, and each lid is installed two dampers 12, and damper 12 is fixed on both sides, well seat front and back, and hinged with well seat and lid 1, damper 12 structures are cylinder piston type.
On the both sides inverted ventilation hasp 11 is installed before and after well head well seat is outer, is needed the time spent can make things convenient in time and lid 1 overlap joint, implement inverted ventilation.
Sealing mat 3 hypotenuse that keeps out the wind, the material of sealing mat 3 is the expanded rubber pad.
When explosion-proof well head is big,, can use steel net structure in order to improve the rigidity weight reduction of well lid.
Can respectively build a spacing prevention wall in the Explosion-proof cap left and right sides, cushion pad is installed on the wall, open the position with the control well lid.
The sealing of the explosion-proof well lid of return air vertical adopts formed rubber strip to do the sealing of well lid, can eliminate intrinsic Explosion-proof cap water and be sealed in the phenomenon of being frozen winter, when also eliminating simultaneously the sealing of water or anti-icing fluid well lid is corroded.Well lid is done the sloping two effects: (1), down-hole have malleation (malleation that explosion produces) effect to open Explosion-proof cap easily down; (2), the well lid slope helps the drainage with rainwater of opening of well lid.
Balancing weight external member 9 is placed on the counterweight hook 8, and being connected to link up with between counterweight hook 8 and the wire rope 4 is connected, and can open balancing weight automatically.The lock core 7 of hook 8 is controlled by the length of spacing rope 6, and spacing rope 6 is connected and fixed with well lid counter-balanced carriage 5 upper ends.Come off when spacing rope 6 drops lock core 7, make hook 8 unclamp balancing weight external member 9, explosion proof door loses the pulling force of balancing weight, and explosion proof door returns to fastening position by deadweight.The ventilation system of mine is recovered to ventilate again, has guaranteed after the shock wave that explosion-proof well lid is not damaged and is automatically restored to normal vent position.The traction of counterweight connects the hook with a kind of similar vehicle traction hook, when counterweight move downward certain apart from the time, under the effect of gravity, extract the lock core of hook out, make it to break off relations, Explosion-proof cap produces one and returns to entopic active force trend under the effect of gravity, treat that impact wave disappears after, Explosion-proof cap can automatically restore to original position.The stroke that counterweight is landed is provided with a protective screening, and stable with the protection counterweight is so that recovery system once more.When recovery system, available sylvester (that uses under the coal mine is manual) rises to predetermined height to counterweight.
Return air vertical new type explosion proof well lid motion flow:
When gas accident takes place in the down-hole; two fan explosion proof door well lids are under both sides counterweight and shock wave leading portion positive pressure; leave well head along two pairs of fixed axis rotations; Damper Control opening speed and position; shock wave energy is in time discharged; play the effect of protection blower fan, the main blast that Explosion-proof cap also can not be exploded damages.Counterweight and hook descend when well lid is opened, at well lid during near the fully open position, spacing rope is tightened and is taken out the hook lock core, opening of hook discharges counterweight, after the shock wave blast disappeared, Explosion-proof cap two fan doors lost the counterweight traction, under the effect of deadweight, form an active force that recovers normal vent position, Explosion-proof cap just returns to original position reposefully under the effect of damper.Mine ventilation system can in time be recovered (blower fan does not need to shut down), and the interruption of moment property only appears in mine ventilation, the long period blowing-out can not occur, and this just can supply with normal air quantity to the personnel in the pit in time.The toxic gas of fire damp blast simultaneously can be watered down in time, can prevent this blast of invar effectively and causes large tracts of land personnel intoxication accident.
The stroke that counterweight is landed is provided with a protective screening, and protection counterweight stable is so that recovery system once more.When recovery system, available sylvester (that uses under the coal mine is manual) rises to predetermined height to counterweight.
During the blowing-out machine, explosion-proof well lid is suspended state under the effect of counterweight, and negative pressure sucks lid during fan starting.
When return air vertical well head is big,, can use steel net structure in order to improve the rigidity weight reduction of well lid.
Each side build a spacing prevention wall at lid, cushion pad is installed on the wall, opened the position with the control well lid.
When the central substation breaking out of fire of down-hole, can carry out inverted ventilation at short notice.After both having obtained notice, the blower fan driver can buckle the inverted ventilation hasp on the Explosion-proof cap easily, closes down the blower fan that forward ventilates, and opens the butterfly valve of another main fan, and starts this blower fan counter steer down-hole air feed, closes the butterfly valve of forward ventilation fan simultaneously.This scheme has been used this facility of hasp, can reduce existing facility and use four fastening devicess or anchor chain device, and operation is than being easier to.
Claims (7)
1. explosion-proof well lid of return air vertical, comprise well head, lid, counter-balanced carriage, the balancing weight external member, wire rope, the seat surface that it is characterized in that slope, the herringbone two sides wellhead receptacle of well head leaves groove, the expanded rubber sealing mat is installed in the groove, two fan lids are buckled on the slope, joint between lid is equipped with sealing mat, the holder of two fan lid axis of rotation is installed on the well head pedestal of the left and right sides, lid and holder are hinged, counter-balanced carriage is installed on the well head pedestal of the left and right sides, wire rope one end at counter-balanced carriage two ends is connected with the balancing weight external member, and the other end links to each other with lid.
2. the explosion-proof well lid of return air vertical as claimed in claim 1, it is characterized in that it is that wire rope is connected with hook that described wire rope one end is connected with the balancing weight external member, hook is connected with the balancing weight external member, and lock core is arranged on the hook, lock core is connected with spacing rope, and the other end of spacing rope is connected on the counter-balanced carriage.
3. the explosion-proof well lid of return air vertical as claimed in claim 1, it is characterized in that between lid and well seat damper being installed, each lid is installed two dampers, is fixed on both sides, well seat front and back, damper and well seat and lid are hinged, and damper structure is a cylinder piston type.
4. the explosion-proof well lid of return air vertical as claimed in claim 1 is characterized in that on the both sides, the outer front and back of well head well seat the inverted ventilation hasp being installed.
5. the explosion-proof well lid of return air vertical as claimed in claim 1 is characterized in that described sealing is lined with the hypotenuse that keeps out the wind, and the material of sealing mat is the expanded rubber pad.
6. the explosion-proof well lid of return air vertical as claimed in claim 1 is characterized in that lid is a steel net structure.
7. the explosion-proof well lid of return air vertical as claimed in claim 1, it is characterized in that lid a spacing prevention wall each side arranged, cushion pad is installed on the wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020605082XU CN201874601U (en) | 2010-11-09 | 2010-11-09 | Explosion-proof shaft cover for return-air vertical shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020605082XU CN201874601U (en) | 2010-11-09 | 2010-11-09 | Explosion-proof shaft cover for return-air vertical shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874601U true CN201874601U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020605082XU Expired - Fee Related CN201874601U (en) | 2010-11-09 | 2010-11-09 | Explosion-proof shaft cover for return-air vertical shafts |
Country Status (1)
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| CN (1) | CN201874601U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352776A (en) * | 2011-11-04 | 2012-02-15 | 山西创奇实业有限公司 | Gas buffer explosion-proof door |
| CN102392686A (en) * | 2011-11-04 | 2012-03-28 | 煤炭科学研究总院 | Lifting buffering self-restoring anti-explosive door of vertical shaft |
| CN102900453A (en) * | 2012-10-18 | 2013-01-30 | 山西潞安华信科技发展有限公司 | Mining gas backflow-preventing wind cone device |
| 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 |
| CN109441527A (en) * | 2018-12-13 | 2019-03-08 | 解宏 | The Weighting system and tunnel escape well of tunnel escape well |
| CN112096444A (en) * | 2020-09-22 | 2020-12-18 | 扬州大学 | Self-recovery type inclined shaft pressure relief explosion-proof device and method for coal mine safety production |
| CN113153407A (en) * | 2021-05-03 | 2021-07-23 | 内蒙古上海庙矿业有限责任公司 | Mine ventilation explosion-proof well lid |
-
2010
- 2010-11-09 CN CN201020605082XU patent/CN201874601U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352776A (en) * | 2011-11-04 | 2012-02-15 | 山西创奇实业有限公司 | Gas buffer explosion-proof door |
| CN102392686A (en) * | 2011-11-04 | 2012-03-28 | 煤炭科学研究总院 | Lifting buffering self-restoring anti-explosive door of vertical shaft |
| CN102352776B (en) * | 2011-11-04 | 2013-09-04 | 山西创奇实业有限公司 | Gas buffer explosion-proof door |
| CN102900453A (en) * | 2012-10-18 | 2013-01-30 | 山西潞安华信科技发展有限公司 | Mining gas backflow-preventing wind cone device |
| 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 |
| CN109441527A (en) * | 2018-12-13 | 2019-03-08 | 解宏 | The Weighting system and tunnel escape well of tunnel escape well |
| CN112096444A (en) * | 2020-09-22 | 2020-12-18 | 扬州大学 | Self-recovery type inclined shaft pressure relief explosion-proof device and method for coal mine safety production |
| CN112096444B (en) * | 2020-09-22 | 2022-06-21 | 扬州大学 | Self-recovery type inclined shaft pressure relief explosion-proof device and method for coal mine safety production |
| CN113153407A (en) * | 2021-05-03 | 2021-07-23 | 内蒙古上海庙矿业有限责任公司 | Mine ventilation explosion-proof well lid |
| CN113153407B (en) * | 2021-05-03 | 2023-08-15 | 内蒙古上海庙矿业有限责任公司 | Mine ventilation explosion-proof well lid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20121109 |