The difference between liquid ring vacuum pump and liquid ring compressor
The Difference between Liquid Ring Vacuum Pump and Liquid Ring Compressor
The principle of water ring vacuum pump is the same as that of liquid ring vacuum pump. Both of them are installed with eccentric impeller. The volume changes in the process of rotation, which can realize inspiration from small to large and exhaust from large to small.
The liquid ring vacuum pump is a vacuum pump that pumps air by periodically changing the volume of the chamber due to the rotating motion of the bias impeller in the pump chamber. Its studio is composed of rotating liquid ring and impeller. Its structure and working principle are similar to that of liquid ring compressor. When working, the suction port is connected with the vacuum container.
If the pump chamber is filled with water, it is called water ring vacuum pump. The water ring vacuum pump has the advantages of simple structure, easy manufacture, reliable operation, convenient use and strong durability. It can extract corrosive, dusty gas and air-water mixture. The optimum temperature of the extracted gas is 0 ~ 40 C. Circulating water should not contain impurities. The pumping rate of the water ring vacuum pump ranges from 0.25 to 500 m (/ h) and the limit pressure is 8 x 10 (~2 x 10) for the unipolar pump and 2 x 10 (~1 x 10) for the two-stage pump. Water ring vacuum pump is mainly used in vacuum distillation, vacuum drying and pumping.
The principle of liquid ring compressor is that the impeller is eccentrically arranged in the cylinder, and a certain amount of water or other liquid is introduced into the cylinder. When the impeller (rotor) rotates and reaches a certain speed, due to the centrifugal force, the liquid is thrown out, forming a liquid ring attached to the inner surface of the cylinder. A crescent cavity is formed between the impeller surface and the liquid ring. It is a number of chambers (elementary volume) with different volumes. The volume of each chamber increases and decreases periodically with the rotation of the impeller. There are suction and exhaust ports on the end caps on both sides of the cylinder. In this way, the impeller can be rotated one week, and the process of suction, compression, exhaust and possible expansion can be realized in each elementary volume. Gas discharges will bring out a part of the liquid, so a certain amount of new liquid must be added to the intake.