Quick reverse ventilation of the main ventilation fan

The existing mines are equipped with independent and complete ventilation systems, with many ventilation methods and main ventilation fan working methods. Regardless of

Which ventilation method and the main working method of the ventilation fan? Both the main and backup mine ventilation fans need to be switched once a month for preventive maintenance of the mechanical and electrical parts of the mine main fan. The main/backup mine ventilation fan switching is now manually completed.

Due to the time required for switching the main/backup mine ventilation fans, there are the following issues:

(1) During the shutdown process, there must be a period of time when there is no wind underground, which can easily cause the mine gas to exceed the limit;

(2) Due to the standby ventilation fan being in a cold standby state, that is, after the running ventilation fan stops running, the standby ventilation fan can be restarted. If the standby ventilation fan is in a cold standby state

The ventilation fan cannot be started for some reason and has stopped running, which can easily cause accidents;

(3) In the event of a backup ventilation fan failure, even if the original ventilation fan is quickly restored to operation, it will still cause a long shutdown time.

This system, based on the idea of hot standby for ventilation fans, can ensure ventilation during the main ventilation fan shutdown period

The continuous supply of power has the functions of automatic shutdown of the mine main ventilation fan, "one click" operation shutdown, and automatic identification of operating ventilation fan faults. Through detection and control systems, the logic control quickly opens or closes the new self sealing air door, achieving fast switching of the ventilation fan. This shortens the impact on the ventilation system during the shutdown process from the traditional "system shutdown" to "air volume fluctuations", and shortens the shutdown time under fault conditions. The original main fan shutdown time is reduced from more than five minutes or even ten minutes to about forty seconds or even less.

Our main products include: Coal mine fan,Fan distribution cabinet,Local ventilation fan,Equipment maintenance parts,mine ventilating fan,Tunnel Fan.