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No Pressure Ventilation Door (Balancedpressure ventilation door) is mainly used for underground outlet inlet lane andthe main outlet inlet air lane between each contact, which is the substitute forall 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 simple to use, safeand reliable, highly evaluated by experts and users, is currently used in theairway of an alternative.
CONTACT: laura@dongdajituan.com
Non pressure air door is composed of a doorframe,door leaf, connecting rod balancing mechanism and a weight interlocking mechanical etc.
Main Feature :
1. The ventilation door opening force issmall, and the size of the opening force of the wind pressure hasnothing to do with wind
2. Two-way isolation, wind leakage air volumeis small, no need to reverse damper
3. Steel structure, simple structure, strong and durable
4. Close the steady, safe and reliable
5. Good fireproof performance, can effectively prevent the possibility of firebelt transport lane, prevent fire and other harmful gases into the roadway
6. Pressure balance type damper is good sound operation, also can poweroperation, such as add a set of control system, can realize the air doorautomatically open
7. Between two air door which can realize mutual atresia.
CONTACT: laura@dongdajituan.com
Workingprinciple:
Thetwo air doors were opened in two directions.To realize linkage through theconnecting rod and the support arm.Change the length of the connecting rod canadjust the air tightness.
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