CN202023579U - Self-restoring explosion-proof door - Google Patents
Self-restoring explosion-proof door Download PDFInfo
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- CN202023579U CN202023579U CN2011200270820U CN201120027082U CN202023579U CN 202023579 U CN202023579 U CN 202023579U CN 2011200270820 U CN2011200270820 U CN 2011200270820U CN 201120027082 U CN201120027082 U CN 201120027082U CN 202023579 U CN202023579 U CN 202023579U
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- explosion proof
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- proof door
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Abstract
The utility model relates to a self-restoring explosion-proof door which is arranged at a mouth of an air exhausting well; a square underframe is connected with foundation bases in a sealed way; isosceles triangle vertical plates are vertically welded at the front side and the rear side of the square underframe; a cross beam is connected with the apex angles of the isosceles triangle vertical plates at the two sides; and door plates are articulated with edges at the left side and the right side of the square underframe by hinges. Back surfaces of the door plates are provided with sealing strips along circles of the external edges; and the sealing strips are matched with a square door frame formed by the cross beam, the two sides of each of the vertical plates and the edge of the square underframe for realizing sealing. Counterweight supports are arranged at the two sides of the foundation bases, the front surfaces of the door plates are connected with heavy punches by steel wire ropes on rolling wheels wounded on the counterweight supports in a crossing way, and the two sides of the foundation bases are also provided with door opening devices, door closing devices and buffering devices. The self-restoring explosion-proof door has reasonable structure and reliable performance and can effectively realize various functions of unloading, air flowing back, self-locking, self-unlocking and the like, thereby greatly improving the work efficiency and reliability and improving the safety degree of equipment operation.
Description
Technical field
The utility model relates to safety of coal mines equipment, particularly a kind of self-resetting type explosion proof door that is used for upright ventilating shaft.
Background technology
Explosion proof door is mounted in the special seal well lid on the air draft well head of coal mine main ventilator, its effect mainly comprises following aspect: (1) needs to keep tightness when normal the ventilation, is used for barrier wells downstream and surface air, prevent distinguished and admirable short circuit, guarantee that ventilation system is normal.(2) when in a single day gas or dust explosion accident take place in the down-hole, the gas shock ripple that explosion proof door is exploded is opened, and air blast directly is discharged into surface air, reduces the pressure of air-flow in the mine, play the release effect, prevent that main fan is subjected to the air blast impact and causes damage.(3) when down-hole intake breaking out of fire or when having poisonous gas, in order to prevent that flame and toxic gas from entering exploiting field harm miner life, must in time carry out the inverted ventilation fire extinguishing, need this moment in time explosion proof door to be compressed, adopt the malleation mode that the down-hole is put teeth in inverted ventilation.
Present explosion proof door structure is taked circular cone umbrella shape lid structure usually, sealing device adopts water-stop, there is following shortcoming in this explosion proof door: (1) if during gas explosion the pressure release time long, then explosion proof door is blown up easily, can not guarantee after the destruction to recover ventilation system in the very first time, to discharge the mine toxic and harmful, will aggravate casualties like this.(2) it is inconvenient that explosion proof door is installed maintenance, and this explosion proof door need lean on manually eight briquettings to be mentioned to revolve and turn 90 degrees, and an end is pressed on the body, and the other end is pressed on the slab that is embedded in the borehole wall, pre-embedded bolt is tightened again; Prepare personnel under the situations such as deficiency or bad weather, the operation of snap close explosion proof door is consuming time many.(3) because the sealing fluid of explosion proof door adopts water-stop more, and moisture evaporates easily, in case the height pressure reduction of sealing water less than the ventilation negative pressure, water will form and seriously leak out suddenly by extinction, therefore needs running check sealing regimen condition; In addition in the winter time, the northern area outside temperature tends to reach subzero 15 degree, needs to select aphlogistic freezing liquid, and the selection of freezing liquid and use be difficulty relatively.The existence of the problems referred to above very big hidden danger to the security presence in colliery.
Chinese patent CN201020194583.3---" explosion proof door is closed in the colliery automatically " discloses a kind of colliery and has closed explosion proof door automatically, comprise a left side that is located at the pit shaft top, right door leaf, it is characterized in that: a left side, be with the steel bushing that vertically is fixed on the pit shaft top around the right door leaf, steel bushing left and right sides outer wall all is fixed with bracing frame, be hinged with cylinder and hinged on the bracing frame with the cylinder block front portion, the steel bushing left and right sides all has the piston rod that is installed with cylinder in through hole and the through hole, a left side, all be connected with stay cord on the right door leaf, the other end of stay cord is walked around the steel bushing corresponding with it one side roof part connection cylinder block afterbody and the cylinder block afterbody is inclined upwardly, and tail cylinder is hung with balancing weight.This structure can reach the purpose that explosion proof door more easily cuts out substantially, but also have following defective: the topmost effect of (1) coal mine explosion-proof door is when mine generation gas explosion, can open in moment, so that quick relief shock wave, but this structure adopts 6 cylinders, because cylinder position is very near when the explosion proof door operate as normal, explosion proof door can not be opened moment full when making gas explosion, thereby the hoistway internal gas flow is easy to impact main air blower.(2) adopt hinged cylinder cushioning, complicated and unreliable, do not meet the safety of coal mines stability requirement.(3) this structure adopts hydraulic jack with balancing weight jack-up, the locking of explosion proof door during with realization ventilating shaft inverted ventilation, because the stroke of jack is limited, wire rope needed bigger stroke when explosion proof door was opened, this scheme implementation gets up quite difficult, and in addition, the malleation of pit shaft is bigger when inverted ventilation, the deadweight of depending two fan explosion proof doors alone is difficult to effectively sealing, the danger that exists door to be opened; In addition, when main air blower stops, can not easily opening explosion proof door, explosion proof door be carried out periodic inspection according to the safety regulations in coal mine regulation.(4) this structure does not have the crossbeam bracing or strutting arrangement, if two fan doors are asynchronous when closing, the place of joining is bumped incessantly in the middle of will making, and can not realize effectively closing; This structure is not properly considered sealing problem yet.
The utility model content
The applicant is at the deficiency of above-mentioned existing explosion proof door, provide a kind of rational in infrastructure, dependable performance the self-resetting type explosion proof door, thereby can satisfy the basic function of explosion proof door fully, meet " safety regulations in coal mine " requirement to explosion proof door.
The technical scheme that the utility model adopted is as follows:
A kind of self-resetting type explosion proof door, be arranged at air draft hoistway well head, square underframe is airtight to be connected on the ground pedestal, and the isosceles triangle riser vertically is welded on both sides, square underframe front and back, crossbeam connects the drift angle of both sides triangle riser, and door-plate is hinged on edge, the square underframe left and right sides by hinge; The back side at door-plate is provided with weather strip along one week of outward flange, and " mouth " font doorframe that forms with crossbeam, riser two waist limits and square underframe edge matches to merge and realizes sealing; The counterweight support is arranged on the both sides of ground pedestal, and the door-plate front connects weight by the wire rope of striding on the roller of counterweight support, also is provided with door opener, door closer-holder and buffer in the both sides of ground pedestal.
It is further characterized in that: described weather strip adopts the rubber weather strip of hollow.
The gravity of described weight and the gravity of door-plate balance each other.
Described door opener adopts the capstan winch twist to be connected the wire rope that opens the door in door-plate front.
Described door closer-holder adopts electric pushrod or Electrohydraulic push rod, but the front of butt door-plate after push rod front end level is stretched out.
Described buffer adopts hydraulic damper.
The beneficial effects of the utility model are:
The utility model is rational in infrastructure, and dependable performance can effectively be finished the various functions of explosion proof door: can in time open the explosion proof door off-load when gas explosion, the protection main air blower prevents that explosion proof door from blowing up; During inverted ventilation, explosion proof door can be locked in the shortest time, to satisfy the requirement that realizes inverted ventilation in the tunnel in the 10min; Adopt the electric pushrod of Long-distance Control, can realize fast automatic locking to explosion proof door, automatic locking and unlocking operation time are 5s, satisfy the time requirement of tunnel inverted ventilation.
The utility model is provided with independently door opener, door closer-holder and buffer, the every function of the independent performance of each device, operating efficiency and reliability have been promoted greatly, improved equipment security of operation degree, thereby miner's life of farthest rescue preciousness when security incident taking place in the colliery, avoided relying in the prior art hinged cylinder to finish multinomial function, potential safety hazards such as the poor reliability that in complex mechanism, exists, long action time.
The utility model adopts the hollow rubber weather strip to seal, the sealing face width, and decrement is big, can effectively seal not leak out; Overcome the problem that evaporates and freeze winter of liquid seal, reduced seasonal effect, also do not needed liquid make-up; Counterweight is lighter, and explosion proof door is opened and is more prone to.
Description of drawings
Fig. 1 is the schematic diagram of the utility model closed state.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the schematic diagram of the utility model open mode.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the mounting structure figure of weather strip that the utility model uses.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.
As shown in Figures 1 to 4, the square underframe 2 of self-resetting type explosion proof door described in the utility model links together by modes such as stone bolt and welding and ground pedestal 1, is positioned at air draft hoistway 13 well heads, and with cement the junction is shut, in case leak out; Isosceles triangle riser 5 vertically is welded on both sides, square underframe 2 front and back, and the outside adopts floor to strengthen, and the commissure need guarantee sealing; Adopt crossbeam 7 to connect both sides triangle riser 5 drift angles, can effectively prevent the riser distortion.Door-plate 6 is hinged on square underframe 2 edges by hinge 12; Door-plate 6 is a rectangle, about each fan, adopt 1Cr13 stainless-steel sheet and shaped steel to form, each design of direction has the reinforcement gusset in length and breadth, makes door-plate that enough renitency deformation ability be arranged, the flatness on door-plate surface guarantees easily simultaneously.
The back side at door-plate 6 all is equipped with flexible plate-type rubber seal strip 8 along one week of outward flange with press strip and bolt 15, and rubber strip is all processed at 45 at two ends, bonding with neoprene bonding agent (813 glue), forms " mouth " word joint ring; " mouth " font doorframe that forms with crossbeam 7,5 two waist limits of triangle riser and square underframe 2 edges matches to merge and seals.Weather strip 8 adopts the soft seal bar of hollow, and as shown in Figure 5, distortion allowance is bigger, can compensate the distortion that part causes when processing and assembling effectively, realizes effective seal; Simultaneously, the problem that this sealing means has overcome evaporating of liquid seal and freezed winter ensures sealingly secure effectively.The utility model adopts matched in clearance between left and right door-plate rotating shaft and bearing, considered enough adjusting plays, when the rubber weather strip wearing and tearing, when its height dimension diminishes, under suction function, can guarantee that still sealing rubber strip is close to doorframe, make the sealing of explosion proof door unaffected; After use or other reason cause rubber strip distortion or damage for a long time, can unclamp screw easily, change rubber strip, thus the sealing of recovery explosion proof door.
Under the ordinary production situation of colliery, as shown in Figure 1 and Figure 2, two fan door-plates, 6 closures, the mutual balance of pulling force moment of door-plate 6 self gravitation moments and weight 3, utilize blower fan to take out negative pressure in the hoistway 13, weather strip 8 is compressed, realize the sealing of explosion proof door, prevent that ventilation fan is in short-circuit condition, to realize normally ventilation under the coal mine.When blasting, owing to blast forms shock wave, door-plate 6 is produced impact force in the hoistway 13, door-plate 6 is opened rapidly around hinge 12 rotation, as shown in Figure 3, Figure 4, and when door-plate 6 rotates to when reaching 85 ° of left and right sides with horizontal plane angle, contact with buffer 11, speed reduces rapidly; When arriving 90 °, realize complete reduction of speed with horizontal plane angle.Because there is angle in door-plate 6 with ground, the off-load area increase when door-plate 6 is opened is very fast, has guaranteed that the shock wave in the pit shaft is discharged rapidly, thereby has protected blower fan effectively.After gas explosion takes place in the colliery, need to ventilate to the down-hole fast, at this moment press the electronic button of door closer-holder 10, door closer-holder 10 begins action, electric pushrod promotes door-plate 6 in the extremely short time, realize closing of door-plate 6, thereby guarantee carrying out smoothly of inverted ventilation work, reduce dust and toxic gas injury aspect the person.
When normal operating conditions, the push rod of door closer-holder 10 leaves door-plate 6 and returns to the origin-location, realizes the explosion prevention function of explosion proof door.When the needs inverted ventilation, start electric pushrod, withstand explosion proof door, realize locking.During the explosion proof door periodic inspection, blower fan stops operating, and utilizes door opener 9 can promptly open door; Door opener has used electronic and the mode that manually combines, and under power down mode, can utilize hand gear that door is opened, and guarantees carrying out smoothly of service work.When adopting liquid seal in addition, after ventilation fan is out of service, weight equalizer was except will overcoming the gravity of explosion proof door own when explosion proof door was opened, also to overcome the liquid power that liquid level just produces inside and outside explosion proof door, therefore counterweight is heavier, and the utility model adopts weather strip, and the weight equalizer of installing for explosion proof door is light in the time of can be than liquid seal, and explosion proof door is opened and is more prone to.
More than describing is to explanation of the present utility model, is not the qualification to utility model, and the utility model institute restricted portion is referring to claim, and under the situation of the utility model spirit, the utility model can be done any type of modification.
Claims (6)
1. self-resetting type explosion proof door, be arranged at air draft hoistway well head, it is characterized in that: square underframe is airtight to be connected on the ground pedestal, the isosceles triangle riser vertically is welded on both sides, square underframe front and back, crossbeam connects the drift angle of both sides triangle riser, and door-plate is hinged on edge, the square underframe left and right sides by hinge; The back side at door-plate is provided with weather strip along one week of outward flange, and " mouth " font doorframe that forms with crossbeam, riser two waist limits and square underframe edge matches to merge and realizes sealing; The counterweight support is arranged on the both sides of ground pedestal, and the door-plate front connects weight by the wire rope of striding on the roller of counterweight support, also is provided with door opener, door closer-holder and buffer in the both sides of ground pedestal.
2. according to the described self-resetting type explosion proof door of claim 1, it is characterized in that: described weather strip adopts the rubber weather strip of hollow.
3. according to the described self-resetting type explosion proof door of claim 1, it is characterized in that: the gravity of described weight and the gravity of door-plate balance each other.
4. according to the described self-resetting type explosion proof door of claim 1, it is characterized in that: described door opener adopts the capstan winch twist to be connected the wire rope that opens the door in door-plate front.
5. according to the described self-resetting type explosion proof door of claim 1, it is characterized in that: described door closer-holder adopts electric pushrod or Electrohydraulic push rod, but the front of butt door-plate after push rod front end level is stretched out.
6. according to the described self-resetting type explosion proof door of claim 1, it is characterized in that: described buffer adopts hydraulic damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200270820U CN202023579U (en) | 2011-01-27 | 2011-01-27 | Self-restoring explosion-proof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200270820U CN202023579U (en) | 2011-01-27 | 2011-01-27 | Self-restoring explosion-proof door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023579U true CN202023579U (en) | 2011-11-02 |
Family
ID=44848531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200270820U Expired - Lifetime CN202023579U (en) | 2011-01-27 | 2011-01-27 | Self-restoring explosion-proof door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202023579U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155250A (en) * | 2011-01-27 | 2011-08-17 | 山西潞安环保能源开发股份有限公司 | Self-reset explosion-proof door |
| CN102352775A (en) * | 2011-11-04 | 2012-02-15 | 山西创奇实业有限公司 | Self-reset explosion door for horizontal wells and inclined wells |
| CN102352776A (en) * | 2011-11-04 | 2012-02-15 | 山西创奇实业有限公司 | Gas buffer explosion-proof door |
| CN102602409A (en) * | 2012-03-26 | 2012-07-25 | 冯世英 | Automatically openable and closable door leaf |
| CN107401342A (en) * | 2017-08-23 | 2017-11-28 | 重庆轻足迹电子有限公司 | The open method of door in explosive work |
| CN110739630A (en) * | 2018-08-27 | 2020-01-31 | 岳广琴 | Overhauling device and overhauling method for high-altitude special equipment |
-
2011
- 2011-01-27 CN CN2011200270820U patent/CN202023579U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155250A (en) * | 2011-01-27 | 2011-08-17 | 山西潞安环保能源开发股份有限公司 | Self-reset explosion-proof door |
| CN102352775A (en) * | 2011-11-04 | 2012-02-15 | 山西创奇实业有限公司 | Self-reset explosion door for horizontal wells and inclined wells |
| CN102352776A (en) * | 2011-11-04 | 2012-02-15 | 山西创奇实业有限公司 | Gas buffer explosion-proof door |
| CN102352776B (en) * | 2011-11-04 | 2013-09-04 | 山西创奇实业有限公司 | Gas buffer explosion-proof door |
| CN102602409A (en) * | 2012-03-26 | 2012-07-25 | 冯世英 | Automatically openable and closable door leaf |
| CN102602409B (en) * | 2012-03-26 | 2015-06-24 | 冯世英 | Automatically openable and closable door leaf |
| CN107401342A (en) * | 2017-08-23 | 2017-11-28 | 重庆轻足迹电子有限公司 | The open method of door in explosive work |
| CN110739630A (en) * | 2018-08-27 | 2020-01-31 | 岳广琴 | Overhauling device and overhauling method for high-altitude special equipment |
| CN110739630B (en) * | 2018-08-27 | 2020-12-25 | 安徽九颍智能设备有限公司 | Overhauling device and overhauling method for high-altitude special equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111102 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |