Contact: laura@dongdajituan.com

No Pressure Ventilation Door(Balanced pressure ventilation door) is mainly used for underground outletinlet lane and the main outlet inlet air lane between each contact, which isthe substitute for all air door.
The damper is an ideal air door of our country coal mine at present, it breaksthe old traditional damper structure for a long time.It cleverly put on thepressure acting on the throttle through the equilibrium structure to convert itinto a force, fully demonstrated the unique air structure.

Non pressure air door is simpleto use, safe and reliable, highly evaluated by experts and users, is currentlyused in the airway of an alternative.

 Advantages:

Simple structure, reliableoperation, convenient maintenance, improve working conditions and  transport efficiency.

Structure:

1.Switch controller

2.Switch device transmitter

3.Switch device display

4.Mine intrinsically safe typeposition sensor

5.Mine intrinsically safe controlbutton

6.Mine intrinsically safepneumatic solenoid valve

Functions:

1. PCL Control System:  When the controller receives the transmittersignal ,then can control the actuator (cylinder or oil cylinder ),move theswitch.

2. Display Function: The monitorcan display the switch current location

3. Tips Functions：When the switch both sides is not in right place, the monitor doesnot display switch position

4. Transmitter remote controldistance ：0~50m(no cover)

5. Remote control Angle: 0~360°

6. High Sensitivity, Operatingtime: ≤3s

Themain components and technical parameters:

ZLC-127K type switch controller

1. Rated voltage: AC 127V 50Hz

2 . Rated power: 40W

3.Intrinsically Safe  Parameter: U: DC 12.5V ,I:1A

ZKC-12F type  switch device transmitter

1 Rated voltage: DC 12V

2.. Rated working current: ≤30mA

3: Launch effective distance:≤50m

ZKC-12X type switch device display

1. Rated voltage: DC 12V

2 .Effective display distance:30m

3 .Display mode: LED Light Icon

GUC15 type mine intrinsically safetype position sensor

1. Rated voltage: DC 12V

2 .Contact capacity: DC12.5V/1A

3.Effective induction distance:≤15m

AHS-12 type mine intrinsicallysafe control button

1 Rated voltage: DC 12V

2.Rated working current:≤15m

3. The button is normally opentype

CFHC-0.8 mine intrinsically safepneumatic solenoid valve

1. Rated voltage: DC 12V

2. Rated working current: ≤266mA

3. Input voltage: 0.2~0.8MPa