Pump Knowledge

Why multistage centrifugal pumps can't lift water?

The multi-stage centrifugal pump has become the most widely used type of water pump in agriculture because of its simple structure, convenient use and...

Pump head calculation formula, how to calculate pump head?

Pump head calculation formula, how to calculate pump head? Head (water head) - pump to unit weight(1kg) The work done by the liquid, that is, the inc...

Cavitation of split case pump

When the pressure P1 at the inlet of the split case pump is equal to or less than the saturated vapor pressure PV of the liquid at the same temperatu...

The principle of selection of split case pump

Split case pump is a kind of general-purpose mechanical equipment with a wide range of applications. It is widely used in petroleum, chemical, electri...

Split case pump selection steps

1. List the basic data of the split case pump: Including: the characteristics of the medium, the particle diameter of the body, the content of the me...

Sealing technology for submersible sewage pump

The so-called auxiliary impeller hydrodynamic seal means that an open impeller is mounted coaxially opposite to the back of the impeller rear cover of...

Design technology of submersible sewage pump

In a typical centrifugal pump, the power always increases with the increase of the flow rate, that is, the power curve is a curve that rises with the ...

Static balance of the impeller

When the pump rotor is working at high speed, if the mass is not balanced, a large centrifugal force will be generated when rotating, causing th...

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