The vacuum auxiliary device of submersible acid pump is mainly composed of controller, vacuum pump, steam-water separator, liquid level sensor, exhaust valve and other parts... moreThe vacuum auxiliary device of submersible acid pump is mainly composed of controller, vacuum pump, steam-water separator, liquid level sensor, exhaust valve and other parts connected by wires and pipes, and the body is installed on the self-priming pump. The liquid level sensor is installed in the exhaust valve, and the exhaust valve is installed at the inlet of the self-priming pump. The upper part of the exhaust valve is connected by a pipeline through the solenoid valve, the suction port of the vacuum pump of the steam-water separator, the liquid level sensor, and the motor of the self-priming pump. And the vacuum pump motor is connected to the control cabinet through the power line, so as to realize the automatic control of the vacuum pump and the self-priming pump through the control cabinet key. A check valve is installed at the outlet of the vacuum pump. Press the start button of the control cabinet, and the vacuum pump will start first (it can also be made into a vacuum pump and a... less