How to choose horizontal multistage centrifugal pump？

Horizontal multistage centrifugal pump selection considerations:

The horizontal multistage centrifugal pump is summarized in the selection process. It is necessary to consider not only the practicality of the horizontal multistage centrifugal pump, but also the working environment of the horizontal multistage centrifugal pump. These environments are often used in horizontal multistage centrifugal pumps. Produce a very important impact.

When a user purchases a horizontal multistage centrifugal pump, the salesperson often communicates with the user first, but in many cases, the salesperson does not know the usage of the horizontal multistage centrifugal pump, so the advice given may not satisfy the user. Need, at this time still need horizontal multi-stage centrifugal pump users have their own knowledge of horizontal multi-stage centrifugal pump selection.

1. The material and sealing form of the pump.

2. The particle diameter and content of the solid contained in the medium.

3. Medium temperature: (°C)

4. If the minimum, normal, and maximum flow rates have been given in the production process, the maximum flow rate should be considered.

5, the characteristics of the medium: media name, specific gravity, viscosity, corrosion, toxicity and so on.

6. Pressure: suction tank pressure, drain pressure, pressure drop in the piping system (head loss).

7. Pipe system data: pipe diameter, length, type and number of pipe fittings, geometric elevation of sink to pressure tank, etc.

8. If only normal flow is given in the production process, consideration should be given to leaving a certain margin. For the large flow low lift pump with ns>100, the flow balance is 5%, for the small flow high lift pump with ns<50, the flow balance is 10%, the pump with 50≤ns≤100, the flow allowance is also 5 %, for pumps of poor quality and poor operating conditions, the flow margin should be 10%.

For the most critical problem of horizontal multistage centrifugal pumps, the reliability of the product, because the medium to be transported when the horizontal multistage centrifugal pump is working is generally the liquid mixed with solid materials, which is the horizontal multistage centrifugal pump relative to other pumps. Factors that need to be considered when sealing, motor load carrying capacity, and bearing placement are selected.