Water Ring Vaccum Pumps

Water Ring Vaccum Pumps

"JEBIVAK" Water-ring pumps are basically liquid-ring pumps. Since water being very commonly used as the sealing liquid,these are called as Water-ring pumps. These pumps are specially designed for handling gases, damp media or moist air and even corrosive vapours by proper selection of material of construction. The pumps can be driven by direct drive or V-belt drive arrangement with Electric Motors or Diesel Engines.

"JEBIVAK" pumps are built up with high accuracy and close tolerances to give best performance. The construction is robust but simple and consisting of very few components. Dismantling and assembling of the pump is therefore very easy. The major components are casing, impeller and control discs. The material of these components are chosen depending on the application. Standard supply is with casing in Cast Iron and impeller and control discs in dynamically balanced to maximum accuracy and it rotates on roller bearing at both the ends. The running is therefore smooth and the vibration free. It is assembled eccentrically in the casing having control discs on sides. Standard pumps are supplied with gland-pack arrangement however mechanical seals aslo can be provided whenever necessary.

Generally the pumps are silent except very little humming noise at the exhaust. This humming noise also can be reduced by using a silencer in the discharge line. A general lay-out is shown on the next page. It is advisable to use a non return valve in the suction line which prevents back-flow of liquid in case of stoppage of pump under vacuum. Pump creates rattling noise in the final range of vacuum due to cavitation. A vent-cock is provided on the side casing-cover to leak in air and reduce cavitation noise. Ultimate vacuum attainable by the pumps depend on the ring-liquid, temperature and barometric pressure. It is 710mm of Hg. with ring-liquid as water at 30^oC having 0.8 to 1.0 Kg/cm² pressure and barometer at 760mm of Hg.

This pump can also be used as a Compressor by using a liquid separator in the discharge line. The compressed air available is little moist but clean and oil-free. Maximum attainable pressure is 1.8 Kg/cm². A general lay-out of compressor is as shown on the next page.

Advantages and Applications
Sturdy construction and long life, smooth running with low noise and free from vibrations, capable of handling heawy amount of water-vapours, compressed air totally oil-free, Easy for maintenance.

Suitable for
Distillation, filtration, vacuum drying, water extraction from paper and cloth, evaporation, crystallisation, sizing for PVC pipes, priming of centrifugal pumps, brake testing etc.