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Specific form and use instructions for pump impeller castings
- Jul 04, 2018 -

The pump impeller casting, which is obtained by the casting process of the pump impeller, is a casting and can be used on different pumps. Since there is such a casting, and its application is also quite a lot, then you may want to know more about it, so you can know what kind of casting is and how to use it reasonably.

 

1. Water pump impeller in water pump impeller casting

The pump impeller in the pump impeller casting has a certain relationship with the blade, and the blade on the pump impeller plays a leading role. In addition, the shape and size of the pump impeller is closely related to the performance of the pump. In terms of form, the pump impeller can be divided into single suction type and double suction type. The single suction type impeller is used for unilateral water absorption, mainly for the water pump with small flow rate, and the double suction type impeller is for both sides of the water absorption. It is mainly used on pumps with large flow.

 

2. The specific form of the pump impeller casting

Pump impeller castings, which are of some specific forms, are closed, front half open, rear half open and open.

 

Closed type: It has three parts: blade, front cover and rear cover. This type of pump impeller casting has high working efficiency but is difficult to manufacture. Therefore, it is mainly used in centrifugal pumps.

Semi-open type: There are two types, the front half open type and the rear half open type, and the working efficiency is not as close as the closed type. In application, it is used to transport liquids containing suspended solids such as solid particles and fibers. In addition, it can also be used to transport clean water and liquids similar to clean water, which can be used in the refining and chemical industry.

Open type: only blade and blade ribs, but no front and rear covers. The number of blades is small, from 2 to 5 pieces. It is used to transport liquid and slurry liquids with higher viscosity.

 

3. Instructions for use of pump impeller castings

Pump impeller castings, which have some instructions for use, are:

 

The pump absorption height should be determined so that the pressure at the impeller inlet is not lower than the vaporization pressure. In addition, the pump impeller casting, when used in conjunction with the length of the water pipe, should shorten the length of the water pipe as much as possible, reduce the accessories on the pipe, and the inner wall of the pipe should be smooth and the diameter of the water pipe can be appropriately increased, so as to ensure the use effect of the impeller casting, and Let the pump work properly and smoothly.


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