(1) The water ring vacuum pump itself has a simple structure, low manufacturing requirements, no suction and exhaust valves, stable operation and uniform air volume;

(2) The compression of the gas by the water ring vacuum pump is close to isothermal compression, the temperature change is small during compression, and there is no metal contact surface that rubs against each other in the pump, so it is not easy to cause combustion and explosion accidents;

(3) The rotating parts in the pump cavity and the fixed parts are sealed by liquid, without lubrication, simple maintenance, easy operation, stable and reliable work;

(4) From the results of use, after using the water ring vacuum pump, the drainage efficiency of the main drainage pump is significantly improved, and the start-up procedure is also simplified, which reduces the labor intensity when starting the pump. When the pump starts, there is no impact or damage to the pump body. little;

(5) After using the water ring vacuum pump, the bottom valve of the suction pipe inlet is cancelled, the suction water is unobstructed, and the drainage efficiency of the pump is improved;

(6) Since the direction of water injection in the water injection pipe is from bottom to top, when the water level rises to the pump body, it can ensure that there is no air in the suction pipe and the pump body, and prevent the occurrence of cavitation. It is beneficial to the daily maintenance of the main drainage pump.

Using the vacuum pump to start the large pump is conducive to the realization of automatic remote control of the main drainage system, which creates conditions for the construction of digital mines.