| Patents for E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents (2,288) |
|---|
| 04/10/2013 | CN202866856U Connecting device for blow dryers |
| 04/10/2013 | CN202866855U Air duct fast connection device |
| 04/10/2013 | CN202866854U Novel air duct for mining |
| 04/10/2013 | CN202866853U Roadway flooding ventilating alarming device |
| 04/10/2013 | CN103032092A Multi-buffering and rising vertical shaft explosion-proof door |
| 04/03/2013 | CN202854564U Tunnel ventilation and illumination management system based on DSPC2000 |
| 04/03/2013 | CN202851409U Adjusting variable speed air supply machine of air speed sensor |
| 04/03/2013 | CN202851051U Mining flame-proofing and intrinsic safety type air-reversing proofing gas automatic discharging apparatus |
| 04/03/2013 | CN202851043U Main haulage roadway photoelectric control hydraulic pressure power automatic air door |
| 04/03/2013 | CN202851042U Air door mechanical locking device |
| 04/03/2013 | CN202851041U Underground tunneling working face air quantity monitoring alarm device |
| 04/03/2013 | CN202851040U Sub-vertical shaft used for shortening ventilation network flow path |
| 04/03/2013 | CN103016048A Zero-resistance ventilation air methane collecting method and device |
| 04/03/2013 | CN102410036B High-speed mine return-air heat exchanger and application method thereof |
| 04/03/2013 | CN102213105B Mobile self-cleaning dry dust-collecting and ventilating equipment used in tunnel construction |
| 03/27/2013 | CN202832619U Belt machine wind-preventing support |
| 03/27/2013 | CN202832618U Blind window type flame-retardant antistatic outburst prevention air door used in underground coal mine roadway |
| 03/27/2013 | CN202832617U Adjustable type anti-flaming antistatic gusty-air-proofing door used for roadway in coal mine |
| 03/27/2013 | CN202832616U Double-leaf type flame-retardant antistatic outburst preventing air door for downhole roadway of coal mine |
| 03/27/2013 | CN202832615U Automatic pressure relief device of push-pull type shutter |
| 03/27/2013 | CN202832614U Automatic locking device of mine air door |
| 03/27/2013 | CN202832613U Interlocking and self-closing device of mine air door |
| 03/27/2013 | CN202832612U Automatic closing device of mine air door |
| 03/27/2013 | CN202832611U City tunnel sewage discharge structure provided with ventilator room and a plurality of low ventilation pavilions |
| 03/27/2013 | CN202832610U Air barrel guiding device for coal mine |
| 03/27/2013 | CN202832609U Resistance reduction type airbridge for coal mine |
| 03/27/2013 | CN202832608U Safe linkage device for ventilation pavilion |
| 03/27/2013 | CN202831792U Two-sided decompression handles of mine air door |
| 03/27/2013 | CN202823064U Wet type dust collector for exhaust outlet of ventilating shaft of resonance grate |
| 03/27/2013 | CN102996173A Automatic safety device of mining working surface roadway |
| 03/27/2013 | CN102996172A Automatic safety device of mining working surface roadway |
| 03/27/2013 | CN102996170A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996168A Device for comprehensively preventing one-ventilation and three-prevention accidents on tunneling working plane |
| 03/27/2013 | CN102996167A Full-automatic safety equipment for stope face roadway |
| 03/27/2013 | CN102996163A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996162A Full-automatic safety equipment for stope face roadway |
| 03/27/2013 | CN102996161A Device for comprehensively preventing one-ventilation and three-prevention accidents on tunneling working plane |
| 03/27/2013 | CN102996155A Blow dryer |
| 03/27/2013 | CN102996154A Mechanical ventilation window for mines |
| 03/20/2013 | CN202811437U Mine ventilation energy-saving automatic speed adjusting system |
| 03/20/2013 | CN202810890U Countercurrent self weight closing ventilating window |
| 03/20/2013 | CN202810889U Small size underground tunnel air supply device |
| 03/20/2013 | CN202810888U Mine ventilation air methane collecting device |
| 03/20/2013 | CN202810484U Safe anti-explosion pressure-release type air cover intelligent control system |
| 03/20/2013 | CN102979566A Device for preventing one ventilation and three prevention accidents of driving face in comprehensive mode |
| 03/20/2013 | CN102979565A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979564A Stope face roadway full-automatic safety equipment |
| 03/20/2013 | CN102979563A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979561A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979560A Stope face roadway full-automatic safety equipment |
| 03/20/2013 | CN102979559A Device for preventing one ventilation and three prevention accidents of driving face in comprehensive mode |
| 03/20/2013 | CN102979558A Device for preventing one ventilation and three prevention accidents of stope face in comprehensive mode |
| 03/20/2013 | CN102979557A Device for preventing one ventilation and three prevention accidents of driving face in comprehensive mode |
| 03/20/2013 | CN102979556A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979555A Stope face roadway full-automatic safety equipment |
| 03/20/2013 | CN102979547A Mine pressure relief damper with enhanced gas shock resistance |
| 03/20/2013 | CN102979546A Tunnel-submerging ventilation and alarm device for underground coal tunnel |
| 03/13/2013 | CN202789832U Cylinder special for underground coal mine air door and capable of preventing people from being clamped |
| 03/13/2013 | CN202788910U Device special for underground coal mine air door and capable of preventing people from being clamped |
| 03/13/2013 | CN202788909U Visible and automatic air door special for underground coal mine and capable of preventing people from being clamped |
| 03/13/2013 | CN202788908U Quick connector for air duct |
| 03/13/2013 | CN202788907U Magnetic-induction air duct sensor |
| 03/13/2013 | CN202788906U Air duct protective umbrella |
| 03/13/2013 | CN202788905U Air duct protective cover |
| 03/13/2013 | CN202788904U Explosion-proof air exhaust device used at working site with sulfuretted hydrogen |
| 03/13/2013 | CN202788903U Ventilation system applied to tunnel construction |
| 03/13/2013 | CN102966367A Roadway construction equipment and dust removing device thereof |
| 03/13/2013 | CN102966365A Novel air bridge construction method |
| 03/13/2013 | CN102080560B Tunnel wind room relay ventilation method for long blind heading |
| 03/07/2013 | WO2013030621A1 Pipe and method therefor |
| 03/06/2013 | CN202768049U Unpowered air door |
| 03/06/2013 | CN202768048U Belt transportation tunnel adjusting ventilation door device |
| 03/06/2013 | CN202768047U Adit assistant ventilation device |
| 03/06/2013 | CN202768046U Jet ventilation structure for tunnel construction of single inclined shaft and double main tunnels |
| 03/06/2013 | CN102953758A High voltage frequency conversion system of mine ventilator with high reliability |
| 03/06/2013 | CN102953746A Automatic safe air door |
| 03/06/2013 | CN102953745A High-efficiency energy-saving mine multi-stage fan station ventilation monitoring technology system |
| 02/27/2013 | CN202756005U Safe explosion-proof decompression type fan cover |
| 02/27/2013 | CN202756004U Installation structure for external fan in tunnel |
| 02/20/2013 | CN202745942U Downhole gas real-time monitoring system |
| 02/20/2013 | CN202745914U Novel papilionaceous ventilation door used for main fan |
| 02/20/2013 | CN202745913U Pressure-proof air door for underground coal mines |
| 02/20/2013 | CN202745912U Automatic locking device of air door for mine |
| 02/20/2013 | CN202745911U Air supply system |
| 02/20/2013 | CN202745910U Ventilation resistance tester |
| 02/20/2013 | CN202745909U Novel tunnel ventilation system for subway station |
| 02/20/2013 | CN202745813U Mine well ventilation air and water drainage heat energy comprehensive utilization system |
| 02/20/2013 | CN102937032A Combined air valve with detachable inspection access |
| 02/13/2013 | CN202732012U Ventilation air methane oxidization power generation system |
| 02/13/2013 | CN202731974U Detacher |
| 02/13/2013 | CN202731973U Mine roadway air door air pressure induction control device |
| 02/13/2013 | CN202731972U Spring type air door locking device |
| 02/13/2013 | CN202731971U Gear-driven non-pressure air door of underground connecting roadway |
| 02/13/2013 | CN202731970U Underground crossheading non-pressure air door driven by rack |
| 02/13/2013 | CN202731969U Air door double shaft interlocking apparatus for coal mine underground tunnel |
| 02/13/2013 | CN202731968U Movable type wind tube |
| 02/13/2013 | CN202731967U Wind tube protective screening |
| 02/13/2013 | CN202731966U Air duct protection device |
| 02/13/2013 | CN202731965U Controllable pressure relief wind tube |
| 02/13/2013 | CN202731964U Device for automatically locking well after damage of ventilation pavilion protective window |