The invention discloses a water and
gas separation detection protection device for precisely judging the
water diversion state of a mine draining pump. The water and
gas separation detection protection device is mainly used in the condition that the
water diversion state of the pump needs to be monitored before the pump is started under the premise that a
water source is lower than the pump in the process of mine underground draining. The device is composed of an
automatic controller, a vacuum tank, a liquid level meter, a pump
exhaust valve, a jet device, a
jet flow source valve, a filter, a water baffle and a matched pipeline. According to the water and
gas separation detection protection device, due to the fact that the unique vacuum tank and the installation position of the vacuum tank are designed, the liquid level meter is added to the top of the vacuum tank to detect the
water level of the vacuum tank, after the
water level in the vacuum tank is detected to reach a
set point, the controller sends out a pump starting order, with the method, the
water diversion state of the draining pump can be precisely judged, and the pump can be protected against dry sucking and
dry grinding when water diversion does not reach the condition; an exhaust electric
ball valve is made to get away from the
water source in a water and gas separation
vacuum pumping detection mode, and therefore the correct action and the service life of the
ball valve are greatly ensured.