Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels › E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents
Patents for E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents (2,288)
11/2012
11/21/2012CN202544906U Gas emission device of coal mine
11/21/2012CN202544896U Sinker bar type balance non-pressure automatic air door
11/21/2012CN202544895U Pneumatic locking device
11/21/2012CN202544894U Damper collision prevention and locking device
11/21/2012CN202544893U Power-driven opposed box-type air door
11/21/2012CN202544892U Pressure relief window of mine ventilation air door
11/21/2012CN202544891U Venting opening structure for municipal common ditch
11/21/2012CN202544890U Air cylinder joint device for well lane
11/21/2012CN102787860A Automatic mind roadway air volume regulating device
11/21/2012CN102079826B Nano wind tube and preparation method thereof
11/14/2012CN202531207U Road tunnel novel ventilation experiment model
11/14/2012CN202531206U Coal mine underground throttle adjusting air window
11/14/2012CN202531205U Intelligent local ventilation system in pit of coal mine
11/14/2012CN102777406A Advanced reaction type speed regulation wind quantity control method
11/14/2012CN102777201A Ventilation method for exploiting short distance coal bed in fire zone based on positive pressure ventilation system
11/14/2012CN101922309B Method for preventing mine gas from exploding and implementation device thereof
11/07/2012CN202520356U Overflow type intelligent air distribution control system
11/07/2012CN202520355U Mining air door
11/07/2012CN202520354U Closed-loop control system of mine ventilator
11/07/2012CN202520353U Air volume distribution controller for tunnel construction ventilation pipeline
11/07/2012CN202520352U Large-cross section gas outburst tunnel ventilating system
11/07/2012CN202520351U Electric traveling mechanism of anti-explosion ventilator body
11/07/2012CN101922292B Coal mine gob-side entry retaining roadside segment bearing unequal strength support principle and application
11/01/2012WO2012145791A1 Ventilation system repair bandage
10/2012
10/31/2012CN202510152U Electric ventilation door for fan
10/31/2012CN202510151U Negative pressure air duct
10/26/2012WO2012143580A1 Motor-securing system
10/24/2012CN202500603U Manual and pneumatic integrated air purifying device for under-mine hedging system
10/24/2012CN102748059A Double-fan air tube automatic changeover device
10/24/2012CN102748058A Device capable of automatically locking well after damage of ventilating pavilion protective window
10/24/2012CN102748057A Ventilating system and ventilating method used for long-distance roadway tunneling
10/17/2012CN102733872A Ventilation air methane oxidation power generation system
10/17/2012CN102733837A Vertical air shaft electro-hydraulic control anti-riot door
10/10/2012CN202483607U Brake of coal mine main fan
10/10/2012CN202483606U Double-track tunnel based on sharing air-exhausting contacting air flues and airshaft
10/10/2012CN102720527A Multi-bed type ventilation air methane regenerative thermal oxidation device
10/10/2012CN102720521A Double-chimney type tunnel and surface structure joint natural ventilation system
10/10/2012CN102720520A Method for ventilating drainage tunnel of extremely-long double-hole tunnel of expressway during construction
10/10/2012CN102720519A Novel tunnel ventilation system for subway station
10/10/2012CN102720518A Double-U ventilation system for fully-mechanized caving coal working face
10/03/2012CN202467888U Automatic blast volume controller
10/03/2012CN202467887U Tunnel air lower exhaust system
10/03/2012CN202463084U Conductive film for air duct of coal mine
10/03/2012CN102704981A Self-adaptive intelligent control system for ventilator
10/03/2012CN102704980A Tunnel cavity separated roadway ventilation method
10/03/2012CN102704979A Intelligent ventilation management system for coal mine
09/2012
09/27/2012WO2012128688A1 Shutoff valve for a flexible tube
09/27/2012CA2830466A1 Shutoff valve for a flexible tube
09/26/2012CN202451196U Mine return air after-heat recovery heat exchanger
09/19/2012CN202442550U System capable of recycling part of waste energy in return air of mine
09/19/2012CN202441419U Pipeline type life-saving device for mine accident
09/19/2012CN202441411U Air door opening and closing device
09/19/2012CN202441410U Auxiliary door opening device, air door and ventilation system
09/19/2012CN202441409U Orepass dust control mechanism
09/19/2012CN102678156A Integral tunnel ventilating device
09/19/2012CN102678121A Layered top-controlling filling mining method for residual ores in deep hole in diskless area
09/12/2012CN202431293U Portable explosion-proof shaft cover for coal mine return-air vertical shaft
09/12/2012CN202431292U Pneumatic automatic air door
09/12/2012CN202431291U Novel outburst prevention plug board
09/12/2012CN102661284A Energy-saving running control system and method for tunnel construction ventilation system
09/12/2012CN102661165A Air door system
09/12/2012CN102661164A Easily opened shock attenuation device for air door
09/12/2012CN102661163A Mine gas, blasting fume and dust separation ventilation system
09/12/2012CN102661100A Pneumatic control device for throttle control
09/05/2012CN202421890U Robot for preventing underground coal mine gas accumulation
09/05/2012CN202419844U Energy-saving explosion-proof exhaust system
09/05/2012CN202417564U Automatic reset ventilation door sill
09/05/2012CN202417563U Rigid wind divider
09/05/2012CN202417562U Novel tunnel ventilation device
09/05/2012CN202413805U Construction car for tunnel ventilation piping
08/2012
08/29/2012CN202402066U Pressure ventilation and compressed air automatic-switching device for escape capsule or refuge chamber
08/29/2012CN202402061U Full-pneumatic interlocking non-pressure air door control system
08/29/2012CN202402060U Novel double-channel deformed air duct
08/29/2012CN202402059U Multi-channel abnormally-shaped air barrel
08/29/2012CN202402058U Irregular air tunnel
08/29/2012CN102650214A Early warning method and system for on-line monitoring and analysis of mine ventilation system
08/29/2012CN101550837B Mechanical dispersion air-discharge method for road tunnel
08/22/2012CN202391456U Electromagnetic ventilation dust-collecting device for mine
08/22/2012CN202391454U Evaporating and cooling ventilation temperature-reducing device for mine shaft
08/22/2012CN202391452U Adjustable air window
08/22/2012CN202391451U Mineral floor type integrated outburst-proof air door interlocking device
08/22/2012CN202391450U Ventilation device of tunneling roadway
08/22/2012CN202391449U Underground closed wall water reversing device of coal mine
08/22/2012CN202391448U Roadway type ventilating structure of no-air door of long-distance tunnel
08/22/2012CN202391447U Single-head tunneling no-air-door roadway type ventilation structure of super-long tunnel
08/22/2012CN202391446U Mine double-power-supply double-blower ventilating system
08/22/2012CN102644473A Light plastic-woven inner sticking film air duct
08/22/2012CN102644472A Mine air quality composite index and ventilation energy-saving linkage system
08/22/2012CN102003186B Double-roadway tunneling construction process
08/22/2012CN101936177B Wind tube wind quantity switch
08/22/2012CN101498225B U+I type ventilating system for top-coal caving face
08/15/2012CN202381112U Multi-functional urban traffic tunnel fire smoke diffusion model device
08/15/2012CN102635404A Mining double-air-door alert control device
08/15/2012CN102635386A Warning air-draft tube
08/15/2012CN102635385A Simulation test device for testing on-way ventilation frictional resistance coefficient of curved tunnel
08/15/2012CN102635384A Air distribution controller for tunnel construction air duct
08/15/2012CN102632895A High-speed underground railroad applying ventilating towers for operation
08/08/2012CN202370564U Mechanical interlocking device for mine air doors
08/08/2012CN202370563U Heat removal system for tunnel of subway station
08/08/2012CN102628370A Mobile natural ventilation and gas collecting device for underground mine
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