How to select the pump?

Selection principle of water pump.
When designing the equipment, the design institute shall determine the use and performance parameters of the pump and select the pump type.This option starts with the selection of the type and form of the pump, so what principle does it take to choose the pump?What is the basis for that?
1. Make the type and performance of the selected pump conform to the requirements of technological parameters such as flow, lift, pressure, temperature, cavitation allowance and suction process;
2, must meet the requirements of dielectric properties of conveying of inflammable, explosive or toxic or precious medium pump, require no leakage of pump shaft sealing is reliable or adopted, such as magnetic drive pump (without shaft seal, using magnetic isolation type indirect transmission), the decay of conveying pump corrosion medium, convection components with corrosion resistance materials, such as fluorine plastic corrosion-resistant pumps, pump for conveying medium containing solid particles, convection parts adopt wear-resisting material requirements, with the shaft seal when cleaning liquid washing;
3. Mechanical aspects require high reliability, low noise and small vibration;
4. Correctly calculate the input cost of pump procurement.See: how to correctly calculate the input cost of the purchase pump.
 
Basic selection reference.
1. The following is the basic pump selection reference:
1, conveying the corrosive medium (such as sulfuric acid, nitric acid), when the flammable and explosive medium, when using the environment shall not have any pollution: can choose magnetic pump, such as "the FSB, IHF fluorine plastic pump, if you need imbibition, can choose KFX, ZW serial self-priming pump;
2, IHF centrifugal pump and the FSB centrifugal pump with high speed, small volume, light weight, high efficiency, large flow, simple structure, infusion without pulsation, stable performance, easy operation and maintenance is convenient wait for a characteristic, such as using the condition of no special requirements, choose centrifugal pump is better;
3, conveying pump containing solid particles chemical medium, the convection part adopts wear-resisting material requirements: when the slurry pump is the best choose object, corrosion resistant mortar pump as a new high strength engineering plastic UHBWPE material, it is a modification of ultra-high molecular weight polyethylene (above 5 million).In plastic, it has the most excellent wear resistance, experiment contrast, its wear resistance is much higher than stainless steel, and impact resistance, creep resistance and excellent corrosion resistance (F4), there is no unique properties such as adhesive;
4. When the medium liquid level is below the installation position of the pump, the FX, KFX and ZW self-priming pump should be selected. If the leakproof characteristic is still needed, the self-priming pump can be used for the external installation.