Purchasing the four-way mining front and reverse small wind gates for pedestrians will make your 2016 smooth and smooth!

Purchasing four front and rear small air doors for pedestrians for mining will make your year smooth and smooth
forward and reverse air doors, pedestrian air doors, front and rear air doors for mining, small air doors for pedestrians, four front and rear air doors, pressureless air doors for mining, Mining balance damper, pressureless balance damper
On this day, the fourth session of the 12th National Committee of the Chinese People's Political Consultative Conference opened in the Great Hall of the People.
Mining forward and reverse pedestrian small air door
Working principle When the door is opened, the magnetic control valve (installed on the door) acts to open the air source, and the latch gets the pressurized air and locks the door. After the door is closed, the solenoid valve is reset to cut off the air source, the latch is reset, and the door is unlocked. If the door is not closed in place, the door will not be unlocked. At this time, pedestrians can unlock the door by pulling the unlocking valve. The same goes for when the door is open.
Front and reverse pedestrian small dampers for mines
Advantages) Purely mechanical structure, no electricity required, can be used in both high and low gas mines. ) has reliable performance and does not require waterproofing and moisture-proof treatment. The electronically controlled locking system needs to be waterproof and moisture-proof, otherwise the system will be disordered and the service life of electrical components will be greatly reduced. ) has high sensitivity, and the sensitivity reaches the standard of electronically controlled locking. ) When the air source is interrupted unexpectedly, the locking device automatically fails and does not affect the normal passage of personnel. It will automatically function after the air source is restored.