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Liquid ring vacuum pump

Tsurumi SONIT series liquid ring vacuum pump is high efficient vacuum pump, its liquid and gas flow smoothly, its noise and vibration is quite low. Its design of general shaft seal chamber is easy to fit variable seal type. Bearing support is convenience for replacing bearing and shaft seal. Tsurumi SONIT series liquid ring vacuum pump is famous for its high efficiency, low maintenance cost, rigid construction, safety and good reliability.
 

Operating Principle

As shown in the Figure, when the pump is filled with sealing liquid and the impeller set and rotated in eccentric position relative to the pump casing, the sealing liquid flows along the inside wall of casing by the centrifugal force and the sealing liquid circulating flow is made and then the crescent cavity is caused in the inside. If the suction port is located at the position where this crescent  cavity  expands  with rotation, the gas is sucked and flows through the crescent cavity with the impeller and then is shut in the independent chamber surrounded by two vanes of the impeller, casing and the inside face of sealing liquid circulating flow. This cavity becomes smaller, since the inside face of sealing liquid circulating flow gradually approaches the boss of the vanes of the impeller, as it rotates, and compresses the gas in the inside. Therefore, if the discharge port is located where the pressure in the cavity reaches the required one, the compressed gas will be exhausted. Namely, the liquid ring type pump can be called a compressor, improved to a rotary and continuous type from the reciprocating one by replacing the piston with sealing liquid. Further, as the phase boundary of the gas and the liquid is out of order, on the discharge side the splash is always flown away with the compressed nas. Therefore, it must be made up.



Features
    EV Model
    .Single stage, single action
    .Capacity from 2m3/min to 270 m3/min
    .Material: CS, SS, Ti
    .Seal type: packing seal, mechanical seal (single,double)
    .Compact structure
    .High efficiency and high compression ratio, low noise
    .Vacuum to 735mmHgV, or 750mmHgV if the pump with an air ejector
    EVL Model
    .Single stage, single action
    .High efficiency, low compression ratio
    .High capacity, low noise
    .Capacity from 50m3/min to 400 m3/min
    .Material: CS, SS
    .Seal type: packing seal, mechanical seal(single, double)
    .Vacuum to 660mmHgV
     EVMA Model
    .Two stage, single action
    .High efficiency and compression ratio
    .Low noise
    .Capacity 80m3/min
    .Material: CS,SS
    .Vacuum to735mmHgV

 

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