Mechanical principle of water ring vacuum pump

The water-ring vacuum pump we usually use is long used as a self-suction pump, and then gradually used in petroleum, chemical and many other industrial sectors. Vacuum filtration, vacuum moisture regain and vacuum degassing are widely used in many industrial processes. Do you know the mechanical principle of water vacuum pump?

In the water ring vacuum pump body, proper amount of water is used as the working fluid. When the impeller rotates clockwise, the water is thrown around by the impeller.

Due to the centrifugal force, the water forms a closed ring which is approximately equal in thickness depending on the shape of the pump chamber. The inner surface of the lower part of the water ring is just tangent to the hub of the impeller, and the upper inner surface of the water ring is just in contact with the tip of the blade. A one-month conodont space is formed between the hub and the water ring of the impeller, and this space is divided into several small cavities equal to the number of blades. If the lower part of the impeller is taken as the starting point, the volume of the small cavity increases from small to large at 180 degrees before the impeller rotates, and is connected with the suction port on the end face. At this time, the gas is sucked in, and the small cavity is isolated from the suction port at the end of the suction. When connected, the gas is discharged out of the pump.

The water-ring vacuum pump is a variable-volume vacuum pump because it can suck, compress and exhaust air by changing the volume of the pump cavity. Due to the rapid development of vacuum technology, attention has been paid to obtaining coarse vacuum. Because the gas compression in water ring vacuum pump is isothermal, it can extract flammable and explosive gases, in addition, it can also extract dust, water-bearing gases, therefore, the use of increasing.