Wuxi Dongao Nonferrous Casting Co., Ltd.
Home > Exhibition > Content
Characteristics and Functions of Horizontal Multistage Pump Body
- Jan 16, 2018 -

In most cases, the pump body of a single-stage pump is designed as a scroll, while the multistage pump body is mainly of a circular structure design.
In fact, when designing a single-stage pump body structure, a staff member is generally designed and manufactured in conjunction with a free-flow trajectory created by the liquid leaving the impeller. This is due to the fact that as the liquid flows outwardly of the snail body, the flow path area increases gradually, and at the same time its flow rate becomes uniform and slow, which transforms kinetic energy into static pressure energy. Pump outlet part of the gradual expansion, it is equivalent to constitute a place of energy conversion. The multistage pump impeller part of the impeller is also provided with a fixed guide wheel.

The advantage of adopting this kind of structural design is that in the process of utilizing multi-stage pump, the multistage pump body can guide the liquid from the previous stage impeller to the next stage impeller and finally to the pump body outlet runner. Since there are many guide vanes on the guide wheel, energy conversion can also be done.

From the structure to analyze the case, in fact, the horizontal multi-stage pump pump body is wrapped around the rotating impeller, while also set and the impeller vertical liquid inlet and tangent outlet. In addition, the pump body also forms an enlarged shell-shaped passage around the impeller. Impeller rotation in the shell is actually in the direction of the shell-shaped channel gradually expanding consistent.

Comprehensive analysis described above, in fact, horizontal multi-stage pump body not only played a protective role, but also makes a lot of kinetic energy into static pressure can also be said to increase the pressure of the liquid, at the same time But also to reduce the flow rate caused by excessive internal pump energy loss.