CN103375173A - Novel anti-explosion door of vertical air shaft - Google Patents
Novel anti-explosion door of vertical air shaft Download PDFInfo
- Publication number
- CN103375173A CN103375173A CN2012101387544A CN201210138754A CN103375173A CN 103375173 A CN103375173 A CN 103375173A CN 2012101387544 A CN2012101387544 A CN 2012101387544A CN 201210138754 A CN201210138754 A CN 201210138754A CN 103375173 A CN103375173 A CN 103375173A
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- explosion
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- door body
- proof door
- rupture disk
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Abstract
The invention provides a novel anti-explosion door of a vertical air shaft and relates to the field of coal mine safety protection and mine ventilation system adjustment. The novel anti-explosion door comprises a door body structure and a counter weight device. The door body structure comprises a rupture disk and a steel structure. The counter weight device comprises a balancing counter weight (1) and a revolving support shaft (2). The door body structure is fixedly connected with the balancing counter weight via a steel beam. The shape of a door body can be manufactured according to actual situations. The rupture disk designed and mounted in the door body can instantly crush at limited pressure so as to depressurize to protect a main ventilator; An overturning mode of revolution of the anti-explosion door and the design of a spare shaft cover (8) meet requirements on automatic opening of the anti-explosion door when a fan stops, and the problem that disaster is enlarged due to the fact that inverted ventilation or normal ventilation cannot be performed in a short time after the anti-explosion door is destroyed by over-strong blast generated by gas explosion or coal-dust explosion is avoided.
Description
Technical field
The present invention relates to safety of coal mines protection and mine ventilation system and regulate the field, is to utilize the character of rupture disk and a kind of novel vertical ventilating shaft explosion-proof door of lever principle design.
Background technology
At present, the explosion proof door that the colliery is used is the vertical ventilating shaft explosion-proof door of MFBL, it is formed by Plate Welding, sealed liquid cell is put in its lower end, around it with 4 wire rope by pulley balance weight counterweight, also install the presser feet of some near the well head, so as when inverted ventilation in order to push down well lid, prevent from that well lid from starting to cause Air escape branch.By the inverted ventilation manoeuvre in colliery every year and the analysis of a large amount of coal mine gas dust explosion accidents are summed up, the vertical ventilating shaft explosion-proof door of MFBL remains in problems.The Main Function of explosion proof door is when in a single day gas or coal-dust explosion occur in the down-hole, is subjected to the percussion of down-hole high pressure blast, and explosion proof door can be opened pressure release moment to protect main ventilation fan to avoid damaging.Regulation in " safety regulations in coal mine ": the main ventilation fan of mine main must be equipped with the inverted ventilation facility, and can change the wind direction in the tunnel in 10min.If mine needs immediately inverted ventilation after the accident of blasting, explosion proof door must be installed on the ventilating shaft collar set again, then installs the presser feet of periphery, and whole process is often considerably beyond ten minutes; If the impact wave that blast produces is excessively strong, explosion proof door is easy to be destroyed so, and inverted ventilation can't be carried out.If after the accident inverted ventilation time long or can't inverted ventilation, with the life security of serious threat down-hole trapped personnel.
Summary of the invention
In order to overcome existing explosion proof door opposing blast impulse blast ability, can not in time reset, the problem such as inverted ventilation time is long the invention provides a kind of novel vertical ventilating shaft explosion-proof door.This explosion proof door utilizes the principle of rupture disk and lever, thereby reduces to greatest extent explosion proof door in the malformation of explosion time and shorten inverted ventilation time, to improve safety and the reliability of explosion proof door.
The technical solution adopted for the present invention to solve the technical problems is: this invention is comprised of door body structure and weight-driven two parts, and two parts are fixedly connected with girder steel.The door body uses rupture disk and structure steel fabrication, and wherein rupture disk can repeat to install; Weight-driven is made of balance weight, revolution back shaft.Around the ventilating shaft collar set, add reversing device; Explosion proof door is made two identical both sides that are installed in respectively the ventilating shaft collar set, and one of a normal use is for subsequent use.When main ventilation fan breaks down when causing mine can't normal mechanical to ventilate, because the effect of weight, explosion proof door can be opened voluntarily and utilize natural ventilation pressure to ventilate; Utilize the character of rupture disk, when gas or coal-dust explosion occured in the down-hole, blast can instantaneously destroy a body of throwing simultaneously with rupture disk, with this destruction of realizing quick pressure releasing protection blower fan and avoiding the explosion proof door agent structure.The explosion proof door for subsequent use that blast can be used offside after occuring fast is to well head again capping, so that the fast normal ventilation system of quick-recovery ensures that personnel in the pit's oxygen is supplied with.
The invention has the beneficial effects as follows: simple in structure, reliability is strong; Occur to recover as soon as possible mine ventilation behind the gas and dust explosion, thereby avoid the extension of accident with the life security that ensures to greatest extent down-hole trapped personnel.
Description of drawings
Fig. 1 is that top view Fig. 2 that novel vertical ventilating shaft explosion-proof door is installed at the returnairshaft well head is the I-I sectional view of Fig. 1
Among the figure, 1. balance weight 2. turns round back shaft, 3. sealed liquid cell, 4. ventilating shaft collar set, 5. a body, 6. returnairshaft, 7. reversing device, 8. explosion proof door for subsequent use.
The specific embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is described in further detail:
Utilize rupture disk and structure steel fabrication door body (5) and mix the main part that suitable balance weight (1) forms explosion proof door, explosion proof door realizes opening or cutting out by the revolution back shaft (2) of ventilating shaft collar set (4) both sides in rotary manner.Explosion proof door relies on sealed liquid cell (3) to seal, in case leak-stopping wind effect ventilation effect.Under normal circumstances, explosion proof door relies on the negative pressure of main ventilation fan to keep closed condition, when main ventilation fan breaks down when shutting down, explosion proof door is thrown for fulcrum take revolution back shaft (2) under the effect of balance weight (1), to realize the natural ventilation pressure ventilation of whole mine.When gas or dust explosion accident occur in the down-hole, blast in the returnairshaft (6) impacts door body (5), the rupture disk instantaneous breakdown pressure release that Men Tizhong installs, explosion proof door is thrown under the effect of balance weight (1) simultaneously, thereby protects main ventilation fan not destroyed; After blast, use explosion proof door for subsequent use (8), recover rapidly the integrality of ventilation system.When mine needs inverted ventilation, utilize reversing device (7) fastening door body, avoid explosion proof door to be thrown and cause Air escape branch, thus the inverted air current of realization underworkings in the short time.
Claims (4)
1. novel vertical ventilating shaft explosion-proof door, it is characterized in that: it is made of door body structure and weight-driven.
2. novel vertical ventilating shaft explosion-proof door according to claim 1, it is characterized in that: the door body structure of novel vertical ventilating shaft explosion-proof door is comprised of rupture disk and steel work, when rupture disk is destroyed, can reinstall rupture disk at door body steel work after the accident in gas or coal-dust explosion.
3. novel vertical ventilating shaft explosion-proof door according to claim 1 is characterized in that: the opening ways of novel vertical ventilating shaft explosion-proof door adopts lever principle to rely on the effect of balance weight to rotarily open by the revolution back shaft that is installed in the well head outside.
4. novel vertical ventilating shaft explosion-proof door according to claim 1 is characterized in that: installed simultaneously two identical explosion proof doors in the both sides of returnairshaft well head, one normal use one for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101387544A CN103375173A (en) | 2012-04-23 | 2012-04-23 | Novel anti-explosion door of vertical air shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101387544A CN103375173A (en) | 2012-04-23 | 2012-04-23 | Novel anti-explosion door of vertical air shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103375173A true CN103375173A (en) | 2013-10-30 |
Family
ID=49460952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101387544A Pending CN103375173A (en) | 2012-04-23 | 2012-04-23 | Novel anti-explosion door of vertical air shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103375173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191224A (en) * | 2017-08-01 | 2017-09-22 | 淮南矿业(集团)有限责任公司 | One kind slips coal（Cash）Eye Pneumatic protective device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2920366Y (en) * | 2006-07-25 | 2007-07-11 | 浙江洁华环保科技股份有限公司 | Burst releasing device for dust collector |
| CN201027478Y (en) * | 2007-03-09 | 2008-02-27 | 永城煤电集团有限责任公司 | Novel anti-fire door for mining |
| CN101532395A (en) * | 2009-03-15 | 2009-09-16 | 樊铁山 | Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave |
| CN201582460U (en) * | 2009-12-08 | 2010-09-15 | 合肥水泥研究设计院 | Diaphragm gravity double-layer compound decompression explosion protection device |
| CN201865530U (en) * | 2010-11-19 | 2011-06-15 | 山西晋城无烟煤矿业集团有限责任公司 | Rotary explosion-proof door |
-
2012
- 2012-04-23 CN CN2012101387544A patent/CN103375173A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2920366Y (en) * | 2006-07-25 | 2007-07-11 | 浙江洁华环保科技股份有限公司 | Burst releasing device for dust collector |
| CN201027478Y (en) * | 2007-03-09 | 2008-02-27 | 永城煤电集团有限责任公司 | Novel anti-fire door for mining |
| CN101532395A (en) * | 2009-03-15 | 2009-09-16 | 樊铁山 | Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave |
| CN201582460U (en) * | 2009-12-08 | 2010-09-15 | 合肥水泥研究设计院 | Diaphragm gravity double-layer compound decompression explosion protection device |
| CN201865530U (en) * | 2010-11-19 | 2011-06-15 | 山西晋城无烟煤矿业集团有限责任公司 | Rotary explosion-proof door |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191224A (en) * | 2017-08-01 | 2017-09-22 | 淮南矿业(集团)有限责任公司 | One kind slips coal（Cash）Eye Pneumatic protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131030 |