Seamless energy-saving switching system of main mine fan
A technology for switching systems and fans, applied in mine/tunnel ventilation, mining equipment, mechanical equipment, etc., can solve the problems of unstable fan operation, single control system for fan operation performance, and inability to adjust air volume, so as to reduce gas accumulation. Dangerous effect of explosion
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[0026] see figure 1 , the invention discloses a mine main fan seamless energy-saving switching system. As shown in the figure: it includes a first fan channel and a second fan channel with one end respectively connected with the shaft shaft, and the other ends of the first fan channel and the second fan channel are provided by two motors 101, 102, 201 respectively. The first fan 1 and the second fan 2 controlled by 202; two electric disc valves 11, 12, 21, 22 are respectively arranged in the first fan channel and the second fan channel; the motor, the fan and the electric disc valve are all Controlled by PLC.
[0027] The operation process of the system controlled by PLC is as follows:
[0028] A fan start-up process: first open the butterfly valves 11, 12, 21, 22 at the front ends of the fans 1 and 2, and then start the motors 101, 102, 201, 202 of the fans after they are fully opened;
[0029] B fan closing process: stop the two motors 101, 102, 201, 202 of the fan, and t...
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