Water ring vacuum pump consists of pump body, pump shaft, impeller, suction port and exhaust port. The cross section of the pump chamber is round, and the impeller is eccentrically arranged in the pump chamber. A certain amount of water is introduced into the pump chamber. By rotating the bias impeller in the pump chamber, the volume of the crescent cavity composed of the water ring attached to the inner wall of the pump chamber and the impeller changes periodically, so as to realize the exhaust and water diversion. When the impeller is in a static state, the water is in the lower part of the pump chamber. When the impeller drives the water to rotate, due to centrifugal action, the water is thrown around by the impeller, forming an equal thickness water ring attached to the inner surface of the pump chamber. The crescent cavity formed between the impeller surface and the water ring consists of several chambers with different volumes. Because the impeller is installed eccentrically, the volume of each chamber increases and decreases periodically with the rotation of the impeller, and the gas pressure in each chamber decreases and increases accordingly. When each chamber rotates through the suction and exhaust ports, it automatically realizes the functions of suction, compression and exhaust due to the effect of pressure difference, so that the centrifugal pump can discharge air and start water diversion and drainage.rotary-vane-vacuum-pumps
The water ring pump has the advantages of simple structure, reliable operation, uniform suction, small wear and tear, and long service life. The disadvantage is to add water to the shell before starting. Water storage tanks need to be installed, occupying a larger space. In severe winter, attention should be paid to prevent the freezing of water in the tank.vacuum-pump-vacuum-distillation
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