Learn - Aug. 13, 2020
After determining the design flow and design head of the pump station, the relevant technical charts can be used to determine the pump specifications and models. The method of pump selection is as follows:
1. Use the pump selection table to select the pump type
According to the determined design head and design flow, in the selection table, the horizontal meter head finds the head value that is consistent or close to the design head; then finds the flow value consistent or close to the design flow in the vertical meter head, Intersect horizontally and horizontally in a small square, it marks the model of the pump, and the pump model is initially selected. But sometimes it appears that both pump types meet the design requirements. At this time, you can compare the two pump types, perform technical and economic analysis, and then select one of the appropriate pump types. This method of selecting a water pump is relatively simple and fast.
2. Use pump performance comprehensive type spectrum to select pump type
The working areas of centrifugal pumps, axial flow pumps, and mixed flow pumps are all comprehensively drawn on the same map, which constitutes a comprehensive spectrum of agricultural water pump series. The drawing is more complicated, but it is more convenient to use.
According to the determined design flow and design head, on the type spectrum, first find out several pumps that meet the requirements of the head with the design head on the ordinate, but with different flow rates, and then use the design flow on the abscissa to determine the selection Which kind of pump. If a single pump fails to meet the requirements when the design flow is large, the multi-machine operation can be considered, but it should be noted that the same type of pump should be used as much as possible to facilitate construction, installation, management, and maintenance.
3. Use the pump performance specification table to select the pump type magnetic pump
The pump factory provides this kind of table in the product catalog. The performance of each model in the table has three rows of data. Which one is the most accurate? The general design flow and design head should be the same as the value in the middle row of the performance table. The same, or close, must fall within the range of the upper and lower rows because this range is the high-efficiency area of the pump operation, this type of pump is considered to meet the actual needs, and the pump selection is determined.
The above information is provided by centrifugal pump factory.
At present, the centrifugal pulp pump that transports low-concentration (mass fraction less than 7%) pulp is mostly used in China. Medium-consistency pulp is a three-phase gas-liquid-solid non-Newtonian fluid with very complex physical properties.
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