Pumps are an essential life tool for every family, and while most people don’t realize it, it’s true. Many people know nothing about pumps. Below we will give a brief introduction to the classification and model specifications of the pump.

Classification of pump selection:

1. According to the working principle and structure of the pump:

Vane pumps, positive displacement pumps (and other types of pumps) such as: jet pumps, air lift pumps, electromagnetic pumps, vacuum pumps, etc.

Vane pumps such as: centrifugal pumps, vortex pumps, mixed flow pumps, axial pumps, screw pumps, etc.

Positive displacement pump such as: reciprocating pump, rotor pump

Reciprocating pump: electric pump, steam pump

Electric pump: Plunger (piston) pump, diaphragm pump, metering pump

Rotor pump: gear pump, screw pump, Roots pump, slide pump, etc.

2. According to the media on the points:

Clean water pump, sewage (dirt) pump, oil pump, corrosion-resistant pump, lining fluorine pump, sewage pump, oil drum pump, etc.;

3. From the use of installation methods:

Pipeline pump, submerged pump, submersible pump, magnetic pump, etc.

After determining the flow meter and design head of the pump station, you can use the relevant technical chart to determine the pump model and specifications. The method is as follows:

First, use the pump performance specification table to select the pump type

The pump factory provides this form in the catalog. Each model in the table has three rows of data. Which one is the default? The general design flow and design head should be the same as the value in the middle row listed in the performance table. Consistent, or close, but must fall within the range of the upper and lower lines, because this range is the high efficiency area of the pump operation, this type of pump is considered to meet the actual needs, the pump is selected.

Second, 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 head looks for the head value that is consistent with or close to the design head; and then finds the flow value that is consistent with or close to the design flow in the vertical head. Vertical and horizontal intersect in the small square, it marks the model of the pump, initially selected multistage pump type. However, there are times when both pump types meet the design requirements. In this case, the two pump types can be compared for technical and economic analysis, and then one of the appropriate pump types is selected. This method of selecting a water pump is relatively simple and quick.

Third, the use of pump performance comprehensive spectrum selection pump type

The working areas of the centrifugal pump, the axial flow pump, the chemical pump, and the mixed flow pump are all drawn on the same picture, which constitutes a comprehensive spectrum of the agricultural water pump series. The drawing is more complicated, but it is more convenient to use according to the determination. Design flow and design lift. On the type spectrum, firstly, on the ordinate, use the design lift to find several pumps that meet the head requirements and flow rates, and then use the design flow on the abscissa to determine which one to use. Water pump. If the design flow is large, the single pump fails to meet the requirements, and multi-machine operation can be considered, but it should be noted that the same type of water pump should be used as much as possible to facilitate construction, installation, and maintenance.