When designing the equipment, the design institute should determine the purpose and performance parameters of the pump and select the pump type.This kind of choice must start from the kind that chooses a pump and form above all, so How to choose a magnetic pump?
1. Make the type and performance of the selected pump conform to the requirements of device flow, head, pressure, temperature, cavitation residue, suction and other technical parameters.
2. The characteristics of the medium must be met of transporting flammable, explosive or toxic or valuable medium pump, require no leakage of pump shaft sealing is reliable or adopted, can choose the corrosion resistant magnetic drive pumps (without shaft seal, driven by magnetic isolation type indirect);For pumps transporting corrosive media, it is required to use corrosion-resistant materials for convection components, such as fluorine plastic corrosion-resistant pumps.It is required to adopt wear-resistant material for conveying pump with solid granule medium and clean liquid for shaft sealing when necessary.
3. High reliability, low noise and low vibration are required for machinery.
4. Calculate the input cost of pump procurement correctly.
5, strong corrosive medium (such as sulfuric acid, nitric acid), when the flammable and explosive medium, use shall not have any pollution in environment: can choose magnetic pump, such as “CQB series, IMD series magnetic pump, magnetic pump for imbibition, can choose china botou kemai FZB fluorine plastic self-priming pump.
6, 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, no special requirements, such as the operating conditions can choose centrifugal pump is better.
7, conveying pump containing solid particles chemical medium, the convection part adopts wear-resisting material requirements: UHB slurry pump is the best choose object, UHB 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 excellent abrasion resistance, experiment contrast, its wear resistance is much higher than stainless steel magnetic drive pumps, and impact resistance, creep resistance and excellent corrosion resistance (F4), there is no unique properties such as adhesive.
8. When the medium liquid level is below the pump installation position: FZB fluoroplastic self-priming pump should be selected. If the characteristics of magnetic pump need to be satisfied, ZMD fluoroplastic self-priming magnetic pump can be selected9. Select the best specification model according to the performance curve of the pump: when the use requirements cannot be found in the performance parameter table, the most suitable pump model can be selected according to the performance curve of the pump.