CN108798744A - A kind of safety of coal mines energy-saving ventilation system - Google Patents
A kind of safety of coal mines energy-saving ventilation system Download PDFInfo
- Publication number
- CN108798744A CN108798744A CN201810214395.3A CN201810214395A CN108798744A CN 108798744 A CN108798744 A CN 108798744A CN 201810214395 A CN201810214395 A CN 201810214395A CN 108798744 A CN108798744 A CN 108798744A
- Authority
- CN
- China
- Prior art keywords
- safety
- energy
- air
- ventilation system
- gas
- 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.)
- Granted
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 19
- 239000003245 coal Substances 0.000 title claims abstract description 18
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 56
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The present invention relates to mine ventilation technical fields.It is designed to provide a kind of safety of coal mines energy-saving ventilation system that can greatly reduce security risk.The technical solution adopted in the present invention is：Several outlet air blinds are arranged on intake stack in a kind of safety of coal mines energy-saving ventilation system, including the exhaust duct being arranged on mine inner top surface and the intake stack being arranged in mine on ground；Several exhaustion sections are evenly arranged on exhaust duct；Air draft blinds is arranged in the both sides of exhaustion section, a vertical light sheet parallel with exhaustion section side wall is provided in exhaustion section on the inside of air draft blinds, the top of light sheet and the lower end of sliding bar connect, the upper end of sliding bar passes through the pilot hole of exhaustion section top surface, and connect with suspension air bag, gas density sensitive gas is filled in suspension air bag.The present invention has abandoned traditional electrical appliance in ventilating system, is controlled using Purely mechanical the air port in well, can reduce the risk of gas explosion, have high safety and energy saving.
Description
Technical field
The present invention relates to mine ventilation technical fields, and in particular to a kind of safety of coal mines energy-saving ventilation system.
Background technology
In process of coal mining, due to mining construction environment, shows that underground oxygen is insufficient first, be unfavorable for work people
The long-term underground construction of member；Secondly gas can be constantly generated during underground construction, it, will necessarily shadow if excluded not in time
The health to staff is rung, even gas explosion accident is caused when serious, threatens the life security of staff.Institute
With down-hole pipe ventilating system is come into being.
Existing pipeline ventilating system includes mainly being laid on intake stack and exhaust duct in mine, intake stack and
Several air inlets and exhaust outlet are set on exhaust duct, electric control damper, intake stack and row are respectively provided at air inlet and exhaust outlet
Wind pipeline is connect outside well with exhaust blower and pressure fan.The clean air outside well is sent into well using pressure fan and intake stack
It is interior, using exhaust blower and exhaust duct by outside the foul atmosphere out well in well, to realize the ventilation inside and outside mine, it is ensured that
Safety in production is smoothed out.But existing pipeline ventilating system still has certain defect, due to the air matter in well everywhere
Measure different, and well inner area is larger, with a varied topography, usually existing in order to ensure exhaust blower has enough pump drainage pressure
Region in technology also in well where exhaust outlet is correspondingly arranged several gas concentration sensors, to detect gas density in well.
When measure gas density it is excessively high when, corresponding electric control damper is opened, on the contrary then close, to realize effective profit to exhaust blower
With.It is well known, however, that being inflammable, explosive high risk zone, electric control damper, gas concentration sensor etc. in coal mine
The addition of electrical appliance will certainly increase the risk of explosion of underground, and huge hidden danger has been buried for safety in production.
Invention content
The purpose of the present invention is to provide a kind of safety of coal mines energy-saving ventilation systems that can greatly reduce security risk.
For achieving the above object, the technical solution adopted in the present invention is：A kind of safety of coal mines energy-saving ventilation system,
Including the exhaust duct that is arranged on mine inner top surface and the intake stack being arranged in mine on ground, on the intake stack
Several outlet air blinds are set；Several exhaustion sections are evenly arranged on the exhaust duct, the exhaustion section is in square tube type and both ends
It is connected by the main part of hemispherical dome pipe and exhaust duct；Air draft blinds, the air draft blinds is arranged in the both sides of exhaustion section
Be provided with a vertical light sheet parallel with exhaustion section side wall in the exhaustion section of inside, the top of the light sheet with
The lower end of sliding bar connects, and the upper end of the sliding bar passes through the pilot hole of exhaustion section top surface, and is connect with suspension air bag, described
Gas density sensitive gas is filled in suspension air bag.
The top of the intake stack is also evenly arranged with several air inlet side pipes, and the air inlet side pipe outer end is provided with lid
Cloth public attention, described cloth public attention connect with inlet side pipe screw thread, and multiple tracks annular notch is uniformly arranged on the side wall of described cloth public attention,
Multiple tracks annular notch constitutes outlet air blinds.
Preferably, the gas density sensitive gas is the mixed gas of gas and air.
Preferably, the blade of the air draft blinds tilts obliquely outwardly.
Preferably, the top surface of the exhaustion section corresponds to the position of pilot hole and is provided with guiding short tube, the sliding bar with lead
It is matched to short tube and in guiding short tube.
Preferably, the exhaust duct is laid on the mounting bracket of U-shaped card composition, and the both ends of the U-shaped card are anchored at mine
In the palisades of well top surface.
Preferably, the position of the air inlet side pipe and exhaustion section are interlaced, and distance in the horizontal direction is at least
It is 5 meters.
Preferably, the annular notch tilts obliquely from the inside to the outside.
Preferably, the bottom of the intake stack is additionally provided with catch basin, is offered on the side wall of the catch basin several
Water seepage hole；The lower part of the intake stack is embedded in underground.
Beneficial effects of the present invention embody a concentrated reflection of, and traditional electrical appliance has been abandoned in ventilating system, to the wind in well
Mouth is controlled using Purely mechanical, can reduce the risk of gas explosion, has high safety and energy saving.Specifically,
In use, the foul atmosphere containing gas is discharged the present invention through exhaust duct in mine, extraneous fresh air pass through into
Wind pipeline fills into mine.During discharge, air is sequentially entered by air draft blinds in exhaustion section and exhaust duct.
Gas density sensitive gas, when gas density is relatively low in mine, the gas of mine inner top are filled in suspension air bag
Volume density is suitable with air, and more than the density of gas density sensitive gas, and the light sheet of suspension air bag drive at this time rises, gently
Matter thin plate constitutes air draft blinds certain blocking；When gas density is higher in mine, gas is assembled in mine, mine
The gas density of inner top is suitable with the density of gas density sensitive gas, at this time by suspension air bag, sliding bar and lightweight thin
The influence of piece its own gravity, light sheet slide downward are detached from the region of air draft blinds, and the gas at air draft blinds is made to circulate not
It is impacted.Therefore, the present invention can automatically according to each position in mine air quality situation to the air draft blinds of each exhaustion section
Automatic adjusument is carried out, greatly improves the utilization rate of exhaust blower, and without using gas concentration sensor, electric flap etc.
Electrical equipment, it is more energy saving, risk is lower.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of exhaustion section；
Fig. 3 is the A-A direction views of structure shown in Fig. 2；
Fig. 4 is a kind of use state diagram of structure shown in Fig. 3；
Fig. 5 is the scheme of installation for entering the wind side pipe；
Fig. 6 is the internal structure schematic diagram cut a smart figure；
Fig. 7 is the structural schematic diagram of catch basin.
Specific implementation mode
A kind of safety of coal mines energy-saving ventilation system in conjunction with shown in Fig. 1-7, including the air draft that is arranged on 1 inner top surface of mine
Pipeline 2 and the intake stack 3 being arranged in mine 1 on ground, the exhaust duct 2 are generally laid on the peace of the composition of U-shaped card 12
It shelves, the both ends of the U-shaped card 12 are anchored in the palisades of 1 top surface of mine；The intake stack 3 is generally laid immediately on ground
On face.The exhaust duct 2 is used to the foul atmosphere inside mine being discharged, and intake stack 3 is fresh for being supplemented into mine 1
Several outlet air blinds 4 are arranged on the intake stack 3 in air, and fresh air is filled into through outlet air blinds 4 in mine 1.
Several exhaustion sections 5 are evenly arranged on exhaust duct 2 of the present invention, the foul atmosphere enters through exhaustion section 5
The main part of exhaust duct 2, then extracted out by the main part of exhaust duct 2.In conjunction with shown in Fig. 2-4, the exhaustion section 5 is in side
Tubulose and both ends are connect by hemispherical dome pipe 6 with the main part of exhaust duct 2.Air draft blinds is arranged in the both sides of exhaustion section 5
7, a vertical light sheet 8 parallel with 5 side wall of exhaustion section is provided in the exhaustion section 5 of the inside of the air draft blinds 7, gently
The top of matter, the light sheet 8 is connect with the lower end of sliding bar 9, and the upper end of the sliding bar 9 passes through 5 top surface of exhaustion section
Pilot hole, and connect with suspension air bag 10.In order to improve stability when sliding bar 9 slides, better way is the air draft
The position that the top surface of section 5 corresponds to pilot hole is provided with guiding short tube 11, and the sliding bar 9 matches and is located at guiding short tube 11
It is oriented in short tube 11.
Gas density sensitive gas is filled in the suspension air bag 10, the gas density sensitive gas i.e. gas are dense
The comparable gas of mixed gas density when degree reaches warning value with gas and air.The gas density sensitive gas is usually
It is that gas is mixed to the mixed gas constituted with the allotment of air.
In use, the foul atmosphere containing gas is discharged the present invention through exhaust duct 2 in mine 1, and extraneous is new
Fresh air is filled into through intake stack 3 in mine 1.Since gas density is relatively low, it is easily gathered in the top of mine 1, in order to make gas
More smoothly by air draft blinds 7, better way is that the blade of the air draft blinds 7 tilts obliquely outwardly.
During discharge, air is sequentially entered by air draft blinds 7 in exhaustion section 5 and exhaust duct 2.Suspension air bag
Gas density sensitive gas is filled in 10, when gas density is relatively low in mine 1, as shown in figure 4, the gas of 1 inner top of mine
Density is suitable with air, and more than the density of gas density sensitive gas, and the light sheet 8 of the drive of suspension air bag 10 at this time rises,
Light sheet 8 constitutes air draft blinds 7 certain blocking.
When gas density is higher in mine 1, gas in the aggregation of the top of mine 1, the gas density of 1 inner top of mine with watt
The density of this concentration sensitive gas is suitable, as shown in figure 3, at this time by suspension air bag 10, sliding bar 9 and light laminated 8 itself
The influence of gravity, 8 slide downward of light sheet are detached from the region of air draft blinds 7, make the gas at air draft blinds 7 circulate not by
It influences.Therefore, the present invention can automatically according to each position in mine 1 air quality situation to the air draft blinds 7 of each exhaustion section 5
Automatic adjusument is carried out, greatly improves the utilization rate of exhaust blower, and without using gas concentration sensor, electric flap etc.
Electrical equipment, it is more energy saving, risk is lower.
In addition, in conjunction with shown in Figures 5 and 6, the top of intake stack 3 of the present invention is also evenly arranged with several air inlet side pipes
13,13 outer end of the air inlet side pipe is provided with cloth public attention 14 of lid, and described cloth public attention 14 is threadedly coupled with air inlet side pipe 13, institute
It states and is uniformly arranged multiple tracks annular notch on the side wall of cloth public attention 14, multiple tracks annular notch constitutes outlet air blinds 4, the annular notch
It tilts obliquely from the inside to the outside so that the outlet air obliquely in a ring of outlet air blinds 4.The fresh sky being discharged in this way through outlet air blinds 4
Gas can more be uniformly dispersed in each position in mine 1, preferably improve subsurface environment.In order to avoid air draft and into
During wind, the fresh air that exhaust duct 2 directly fills into intake stack 3 is discharged, the position of the air inlet side pipe 13
It is interlaced with exhaustion section 5, and distance in the horizontal direction is at least 5 meters.
In addition, as shown in fig. 7,1 internal water accumulation of mine, the bottom of intake stack 3 of the present invention are additionally provided in order to prevent
Catch basin 15 offers several water seepage holes 16 on the side wall of the catch basin 15, and the lower part of the intake stack 3 is embedded in ground
Under.A part of ponding in this way in mine 1 can be entered by water seepage hole 16 in catch basin 15, convenient for solving the product in mine 1
Water problems.Meanwhile the humidity of the fresh air filled into also can be improved in the moisture in catch basin 15, reduces the savings of electrostatic in air
Amount, to further reduced the risk of gas explosion in mine 1.
Claims (8)
1. a kind of safety of coal mines energy-saving ventilation system, it is characterised in that：Including the exhaust duct being arranged on mine (1) inner top surface
(2) and intake stack (3) on mine (1) interior ground is set, several outlet air blinds (4) are set on the intake stack (3)；
Several exhaustion sections (5) are evenly arranged on the exhaust duct (2), the exhaustion section (5) is justified in square tube type and both ends by day
Ground square tube (6) is connect with the main part of exhaust duct (2)；The both sides setting air draft blinds (7) of exhaustion section (5), the air draft
It is provided with a vertical light sheet (8) parallel with exhaustion section (5) side wall in exhaustion section (5) on the inside of blinds (7), it is described
The top of light sheet (8) is connect with the lower end of sliding bar (9), and the upper end of the sliding bar (9) passes through exhaustion section (5) top surface
Pilot hole, and connect with suspension air bag (10), gas density sensitive gas is filled in the suspension air bag (10)；
The top of the intake stack (3) is also evenly arranged with several air inlet side pipes (13), and air inlet side pipe (13) outer end is set
It is equipped with cloth public attention (14) of lid, the cloth public attention (14) is threadedly coupled with air inlet side pipe (13), the side of the cloth public attention (14)
Multiple tracks annular notch is uniformly arranged on wall, multiple tracks annular notch constitutes outlet air blinds (4).
2. safety of coal mines energy-saving ventilation system according to claim 1, it is characterised in that：The gas density sensitive gas
For the mixed gas of gas and air.
3. safety of coal mines energy-saving ventilation system according to claim 2, it is characterised in that：The leaf of the air draft blinds (7)
Piece tilts obliquely outwardly.
4. safety of coal mines energy-saving ventilation system according to claim 3, it is characterised in that：The top surface of the exhaustion section (5)
The position of corresponding pilot hole, which is provided with, is oriented to short tube (11), and the sliding bar (9) matches and is located at guiding short tube (11) and led
Into short tube (11).
5. safety of coal mines energy-saving ventilation system according to claim 4, it is characterised in that：The exhaust duct (2) is laid with
On the mounting bracket that U-shaped card (12) is constituted, the both ends of the U-shaped card (12) are anchored in the palisades of mine (1) top surface.
6. safety of coal mines energy-saving ventilation system according to claim 5, it is characterised in that：The position of the air inlet side pipe (13)
Set interlaced with exhaustion section (5), and distance in the horizontal direction is at least 5 meters.
7. safety of coal mines energy-saving ventilation system according to claim 6, it is characterised in that：The annular notch is from the inside to the outside
It tilts obliquely.
8. safety of coal mines energy-saving ventilation system according to claim 7, it is characterised in that：The bottom of the intake stack (3)
Portion is additionally provided with catch basin (15), and several water seepage holes (16) are offered on the side wall of the catch basin (15)；The intake stack
(3) lower part is embedded in underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214395.3A CN108798744B (en) | 2018-03-15 | 2018-03-15 | Energy-conserving ventilation system of colliery safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214395.3A CN108798744B (en) | 2018-03-15 | 2018-03-15 | Energy-conserving ventilation system of colliery safety |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798744A true CN108798744A (en) | 2018-11-13 |
| CN108798744B CN108798744B (en) | 2020-05-01 |
Family
ID=64095205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214395.3A Active CN108798744B (en) | 2018-03-15 | 2018-03-15 | Energy-conserving ventilation system of colliery safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798744B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566265A (en) * | 2019-09-20 | 2019-12-13 | 河南城建学院 | Coal mine underground gas circulating pumping and draining system |
| CN111336633A (en) * | 2020-03-09 | 2020-06-26 | 山东大学 | Ventilation method suitable for waste gas generation place |
| CN111894657A (en) * | 2020-07-16 | 2020-11-06 | 山东华坤地质工程有限公司 | Gas treatment method |
| CN116838398A (en) * | 2023-07-10 | 2023-10-03 | 中煤科工集团沈阳研究院有限公司 | Return air corner gas monitoring and emission promotion device |
| CN117685039A (en) * | 2024-02-03 | 2024-03-12 | 山西山煤国源煤矿安全技术有限公司 | Coal seam gas extraction device and extraction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001323800A (en) * | 2000-05-17 | 2001-11-22 | Kajima Corp | Tunnel ventilating method and apparatus for use therein |
| CN101117891A (en) * | 2006-08-03 | 2008-02-06 | 高天奇 | Coal mine gas detecting and draught fan automatic control device |
| CN102661163A (en) * | 2012-05-03 | 2012-09-12 | 耿秀 | Mine gas, blasting fume and dust separation ventilation system |
| CN103670478A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Coal mine ventilation system |
| CN205481464U (en) * | 2016-04-06 | 2016-08-17 | 云南滇睿科技发展有限公司 | Energy -conserving ventilating air clean system of pipeline formula |
| CN207033479U (en) * | 2017-07-22 | 2018-02-23 | 山西工程技术学院 | A kind of underground coal mine ventilation unit |
-
2018
- 2018-03-15 CN CN201810214395.3A patent/CN108798744B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001323800A (en) * | 2000-05-17 | 2001-11-22 | Kajima Corp | Tunnel ventilating method and apparatus for use therein |
| CN101117891A (en) * | 2006-08-03 | 2008-02-06 | 高天奇 | Coal mine gas detecting and draught fan automatic control device |
| CN102661163A (en) * | 2012-05-03 | 2012-09-12 | 耿秀 | Mine gas, blasting fume and dust separation ventilation system |
| CN103670478A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Coal mine ventilation system |
| CN205481464U (en) * | 2016-04-06 | 2016-08-17 | 云南滇睿科技发展有限公司 | Energy -conserving ventilating air clean system of pipeline formula |
| CN207033479U (en) * | 2017-07-22 | 2018-02-23 | 山西工程技术学院 | A kind of underground coal mine ventilation unit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566265A (en) * | 2019-09-20 | 2019-12-13 | 河南城建学院 | Coal mine underground gas circulating pumping and draining system |
| CN111336633A (en) * | 2020-03-09 | 2020-06-26 | 山东大学 | Ventilation method suitable for waste gas generation place |
| CN111894657A (en) * | 2020-07-16 | 2020-11-06 | 山东华坤地质工程有限公司 | Gas treatment method |
| CN116838398A (en) * | 2023-07-10 | 2023-10-03 | 中煤科工集团沈阳研究院有限公司 | Return air corner gas monitoring and emission promotion device |
| CN116838398B (en) * | 2023-07-10 | 2024-10-08 | 中煤科工集团沈阳研究院有限公司 | Return air corner gas monitoring and emission promotion device |
| CN117685039A (en) * | 2024-02-03 | 2024-03-12 | 山西山煤国源煤矿安全技术有限公司 | Coal seam gas extraction device and extraction method |
| CN117685039B (en) * | 2024-02-03 | 2024-04-12 | 山西山煤国源煤矿安全技术有限公司 | Coal seam gas extraction device and extraction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108798744B (en) | 2020-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108798744A (en) | A kind of safety of coal mines energy-saving ventilation system | |
| CN203145985U (en) | Underground multilevel station partial concentrated ventilation structure | |
| CN109268054A (en) | It is a kind of for underground big cross section, the ventilating and purifying air system in long distance driving face | |
| CN102995802A (en) | Double-layer glass curtain wall utilizing solar energy | |
| CN205878472U (en) | Fresh air purification machine with noise regulatory function | |
| CN207590297U (en) | A kind of inflammable thing, poisonous substances cabinet | |
| CN204591331U (en) | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas | |
| CN207720750U (en) | The air circulation system of potato warehouse | |
| CN202819476U (en) | Raw grain indoor warehouse-type drying equipment | |
| CN106437745A (en) | Shaft type emergency exit structure system of intercity railway tunnel | |
| CN105386629B (en) | Underground stereo garage parking induced draught device and its induced draught method | |
| CN201103402Y (en) | Mine down-hole tunnel ventilating device | |
| CN106351688A (en) | Tunnel emergency evacuation device | |
| CN106351682A (en) | Ventilation system capable of quickly realizing multi-stage fan station reverse ventilation of underground metal mine | |
| CN109654647A (en) | Underground space intelligence adjustable ventilation system | |
| CN205976711U (en) | Air film building exhaust system | |
| CN107747318A (en) | Between the pipe gallery air inlet and electrical equipment of the function that fed intake with pipeline | |
| CN208996085U (en) | A kind of four cabin pipe gallery systems | |
| CN204616476U (en) | A kind of Ipomoea batatas cellar for storing things building ground in | |
| CN104676814A (en) | Large underground cave depot construction network ventilation method | |
| CN104359176A (en) | Dehumidification control system for bathroom | |
| CN206308763U (en) | A kind of public lavatory post unpowered exhaust system of formula | |
| CN205606822U (en) | Underground garage mechanical ventilation system based on solar energy | |
| CN205746988U (en) | Log cabin steel plate fireplace | |
| CN204285718U (en) | Indoor formaldehyde detects and treating apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200108 Address after: 226600 No.366, Huanghai West Road, Hai'an town, Hai'an City, Nantong City, Jiangsu Province Applicant after: Nantong Pratt Turbine Technology Co., Ltd Address before: 610094 Sichuan Chengdu high tech Zone No. 369 Tianfu street 1 Building 1 unit 21 level 2110 Applicant before: CHENGDU LANTENG TECHNOLOGY CO., LTD. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |