1. Related motor power.
In order to reasonably support the motor, we draw on the advanced experience of developed countries, and divide the water pump into three kinds of operating conditions: A, B and C. You can reduce the power of the matching motor according to the specific situation if you use it in class B and C.
The condition of a-level working condition is: continuous operation, suction, flow, and lift all three performance requirements (the standard of the selected model);
B stage condition is: continuous operation, three performance needs only two standards;
C stage condition is: continuous operation, three performance needs only one standard;
2. Selection method.
(1) performance parameter list; Class code; Column 1-5 meaning: type 1 is long square, type 2 is conical type, type 3 is explosion-proof type, type 4 is outdoor type, and type 5 is trolley mobile type. & other; Material symbol ” The four groups of letters T, G, PP and BXG represent: iron, steel, reinforced polypropylene, and stainless steel (1Cr18Ni9Ti).
(2) model significance example:
50 WFB - AD1
50 suction diameter (mm) WFB unsealed self-priming pump AD1 performance classification.
(3) complete model writing mode. The requirements of the water pump are: the shape is the wheeled mobile type, the material is the reinforced polypropylene, the suction diameter is 50mm, and the performance is classified as AD1. The complete model of this pump is “ 5 pp50wfb - AD1 & throughout; .
(4) the flange of the pump is manufactured by the national standard of the People's Republic of China. Standard code gb9115.2-88; GB9115.3-88. Flange pressure of non-metallic material pump 0.6mpa; Flange pressure of metal material pump 1.0MPa. When the water pump leaves the factory, the inlet and outlet is equipped with an anti-flange.
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