Product Introduction:

Fully automatic pressure-free air doors for mining, mainly used forCoal mines, non-coal mines, various metal minesIn the connecting corridor between the lower return air passage and the main return air passage. Equipped with automatic opening and closing, electrical interlock, position detection, audible and visual alarms, anti-entrapment for people and vehicles. This air door boasts unique structure, simple operation, safety and reliability, and low opening force.

Product Composition:

The fully automatic pressure-free air door for mining is primarily composed of the door body and control system.

Fully Automatic Air Door Mechanism: Composed of door leaf, door frame, cross beam, ground beam, hinges, balancing mechanism, drive mechanism, etc.

Electrical Control System: Comprising an electrical control box, explosion-proof pushbuttons, infrared beam sensors, air door status sensors, power source, drive unit, LED voice alarm box, and anti-pinch person pushbutton.

Power source: hydraulic power units, compressed air, or electric drive units.

The hydraulic pump station system consists of an oil tank, explosion-proof solenoid valves, explosion-proof motors, hydraulic pumps, high-pressure hoses, hydraulic cylinders, and other accessories. The configuration parameters of the complete hydraulic station are selected based on the size and pressure of the ventilation passage, the frequency of opening and closing, and the dimensions of the door body.

The compressed air-driven system consists of a gas source box, a control box, explosion-proof solenoid valves, an oil-water separator, an emergency valve, quick connectors, air piping, and its associated components.

The electric assembly consists of explosion-proof motors, reducers, couplings, crankshafts, connecting rods, and their auxiliary equipment.

Product Features:

1) The wind door's on/off: Achieved through a drive unit (such as a hydraulic cylinder, reducer, cylinder, etc.). No additional facilities are required; the drive unit is mounted on the door, not occupying the tunnel's usage space. Installation is simple, operation is smooth, and it truly integrates safety, convenience, and automation into one.

2) Hydraulic-driven damper with substantial thrust, capable of meeting the control needs of large-size heavy-duty dampers.

3) In full automatic control mode, the air door operates automatically without the need for manual operation, offering convenience and practicality.

4) Utilizing PLC control for the overall automatic operation of the air door, it effectively reduces labor intensity, enhances safety features, and improves work efficiency.

5) The two air doors interlock, allowing only one to be opened at a time, and closing the door takes precedence to prevent the ventilation system from short-circuiting.

6) The air damper can be manually operated during power outages, and the device will automatically reset upon power restoration (if the air damper is open at that time, the system will automatically close it).

7) Features both LED display and voice alarm functions, capable of emitting various voice prompt signals. In fault conditions, it can trigger audio-visual alarm signals.

8) Equipped with anti-pinch for people and vehicles, the system operates with enhanced safety.

9) System Control & Data Communication: The main control system employs a programmable logic controller (PLC) and is equipped with communication interfaces.

10) The electrical control system features protections against overcurrent, overload, overvoltage, three-phase imbalance, and leakage.

Technical Specifications:

1) Air door opening style: opposite-direction synchronous opening and closing.

2) Door Swing Angle: ≥90 degrees.

3) Corrosion and Surface Treatment: The door frames and doors are made of full steel structure, offering superior corrosion, moisture resistance, and flame-retardant capabilities.

4) Drive Method: Directly driven by hydraulic cylinder (pneumatic cylinder, electric unit).

5) Pressure Resistance: Adjust the system pressure based on the on-site wind pressure to control the cylinder (pneumatic cylinder) thrust, ensuring an appropriate speed for the wind door's opening and closing.

6) Locking Method: Electrical locking, explosion-proof hydraulic (pneumatic) valve pressure retention. The control host PLC contains a locking program and the pipeline is equipped with a controllable pressure lock, ensuring that the two wind gates cannot be opened simultaneously during the system operation.

7) Explosion-proof motor rated voltage: AC380/660/1140V, power 2.2-7.5KW.

8) Signal Light Intensity: Visible from 100 meters.

9) Infrared detection distance: ≥ 10 meters.

10) Air door status sensor detection distance: 0-8mm.

11) Explosion-proof type of control box: Mine-used intrinsically safe type.

12) Explosion-proof label for control box: Exd[i]b I.

24-hour hotline for consultation: 15345319310