Water Ring Vacuum Pump Working Principle

The impeller is eccentrically installed in the pump body.

Water ring vacuum pump working principle.

Liquid ring vacuum pumps and compressors are rotary machines. They operate according to the positive displacement principle. They are typically used as a vacuum pump but can also be used as a gas compressor. Before the vacuum of the condenser is established the water ring vacuum pump directly vacuumizes the condenser through the isolation valve at the inlet of the vacuum pump group and the bypass valve of the front air extractor.

The most widely used liquid is water typically used once through and rejected to drain. Working principle of water ring vacuum pump water ring vacuum pump is provided with a balanced rotor that is shaped as a cylinder with a hollow hub it is attached to radial blades that rotate freely in a circular casing. Through the centrifugal installation of impeller and pump chamber the purpose of suction compression and exhaust is achieved and the vacuum i e. The function of a liquid ring pump is similar to a rotary vane pump with the difference being that the vanes are an integral part of the rotor and churn a rotating ring of liquid to form the compression chamber seal.

The rotation of the blades in the circular case generates working spaces. Water ring vacuum pump working principle. As the shaft turns a liquid ring is created by the centrifugal force generated by the rotating impeller. A liquid ring pump is a rotating positive displacement pump.

Sliding friction is limited to the shaft seals. The liquid is generally water for most of the applications and hence they are also known as water ring water piston or liquid piston rotary pumps and compressors. Quite often a cooling water system is also in place so as to dissipate the heat produced during operation. At this time the air inlet isolation valve of the front air extractor remains closed.

To produce vacuum in a two stage liquid ring vacuum pump a multi blade impeller on a shaft is positioned eccentrically in a cylindrical housing that is partially filled with sealing liquid. Liquid ring vacuum pumps typically use a liquid seal to achieve a vacuum. Water ring vacuum pump is cantilever structure as shown in fig. Its joint working principle is.

Liquid ring vacuum pumps utilize water or other processes compatible liquid as the sealant. As shown in the diagram of the working principle of the liquid ring pump the liquid ring pump is composed of impeller pump body suction and exhaust disc liquid ring formed in the inner wall of the pump body suction port exhaust port auxiliary exhaust valve etc. They are an inherently low friction design with the rotor being the only moving part. In these machines a liquid is made to act as a piston.