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Frequently issues |
How to select the pump type and size
Pump is an essential life tool for each family, although most people do not realize this, but it is a fact. Many people know nothing about the pump. Here we have the classification and type of pump specifications to make a simple introduction.
[Classification of pump selection]:
1, according to the pump working principle and structure of the points:
Vane pumps, positive displacement pumps (and other types of pump) such as: jet pump, air-liter pump, pump, pump, etc.
Vane pumps such as: centrifugal pump, vortex pump, flow pump, axial flow pump, screw pump, etc.
Positive displacement pumps such as: reciprocating pumps, rotor pump two
Reciprocating pumps: electric pumps, steam pumps
Electric pumps: plunger (piston) pumps, diaphragm pumps, metering pumps
Rotor pump: Gear pump, screw pump, Roots pump, vane pump
2, according to media points:
Water pump, water (sewage) pump, pumps, corrosion resistant pumps, lined pumps, sewage pumps, barrel pumps;
3 minutes from the use of the installation:
Pipeline pumps, liquid pumps, submersible pumps, magnetic pumps.
Determine the flow meter and pump station design head, you can use the technical charts to determine the pump type and size, the method is as follows:
First, the use of performance specifications pump pump selection table
Pump Factory are available in the catalog of this table, the table of performance of each model has three lines of data, whether the behavior to which standard? General design flow and design head should be in the middle of the performance table lists the values consistent with a line, or close to, but must fall on the line within the next two, because the range is the high efficiency of operation of the pump region This type of pump to meet the actual needs that is, pumps be selected.
Second, the use of selected pump pump selection table
Accordance with the established design head and design flow, in the selection table, the horizontal header to find out the match with the design head or values close to the head; then the header to find out in the vertical line with the design flow of traffic or close to values vertical and horizontal intersect in a small box, and it marked the pump model, the initial election of multi-stage pump. But sometimes the two pump design requirements are met, then, can the program of these two pump compared to the technical and economic analysis, and then select one of the appropriate pump. Comparison of this choice is simple but the pump quickly.
Third, the use of integrated spectrum of pump performance pump selection
The centrifugal pump, axial flow pump, chemical pump, mixed flow pump of the work area all integrated on the same graph painting, which constitutes a comprehensive spectrum of agricultural water pumps, the mapping is more complex, but more convenient to use under certain design flow and design head, the type of spectrum, the first head vertical axis to find out the design requirements meet the head, while the flow rate ranging from several pumps, and then to design flow on the horizontal axis to determine the selection of which pump. If the design flow is large, a single pump fails to meet requirements, consider the multi-machine operation, it should be noted the same type of pump as much as possible to facilitate the construction and installation, management and maintenance.
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