What is Progressive Cavity Pump?
A progressive cavity pump is a type of positive displacement pump and is also known as a progressing cavity pump, progg cavity pump, eccentric screw pump or cavity pump. It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned. This leads to the volumetric flow rate being proportional to the rotation rate (bidirectional) and to low levels of shearing being applied to the pumped fluid.
These pumps have application in fluid metering and pumping of viscous or shear-sensitive materials. The cavities taper down toward their ends and overlap. As one cavity diminishes another increases, the net flow amount has minimal variation as the total displacement is equal. This design results in a flow with little to no pulse.
Construction of Pump:
Our series of Progressive Cavity Pumps (or) Screw Pumps are customized to the exact requirements of our customers. The outer parts of the pump are made from mild steel and caste iron. Whereas, the inner rotating parts are made from stainless steel. With respect to food industry applications, every liquid contact areas are made up of hygienic food graded materials.
Merits of Progressive Cavity Pumps:
- Apt for High Viscous liquid-based applications
- High accurate and efficient pump operation
- Excellent self-primer pump
- Can operate both vertical and horizontal mode
- Suitable for suspended particle liquids
- Low pulsation and shear
- Prevents Backflow
- Prevents vapour lock
- Low life-cycle costs due to long lifetime and meantime between failures
- Bi-directional rotation of the pump – both delivery and suction feasible
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