Using magnetic pump in pulp and paper industry is more special, because of can contain a variety of chemical pulp and solid impurities, so the choice of time will be a little bit strict, magnetic pump to introduce below in papermaking industry how to correctly choose magnetic pump.
1, according to the requirements of magnetic output flow and allow the highest speed to determine the magnetic pump magnetic pump specifications.According to the abrasion resistance, medium viscosity, specific gravity, such as concentration, temperature, solid mixture combined with Vg. M and experience, to determine the magnetic pump to allow the highest speed.If choose magnetic pump set at high concentration slurry flow should be considered the pulp abrasion performance determine its maximum speed, such as installation location enough Suggestions to choose large diameter low speed magnetic pump.
2, according to the requirements of magnetic output pressure and maximum allowable working pressure of magnetic pump.And according to the relation between medium wear determine magnetic pump series.Under the condition of meet the magnetic force, should choose low series magnetic pump, because the more series, the papermaking, the more difficult.
3, the medium according to the requirement of use magnetic liner material such as physical and chemical characteristics.Magnetic pump bushings used rubber for nitrile butadiene rubber (NBR), chloroprene rubber (CR), fluorine rubber (FPM) and ethylene propylene rubber (EPDM) and so on several besides nitrile butadiene rubber (NBR) are not resistant to ozone, chloroprene rubber (CR) steam resistance, have good wear resistance, ageing resistance, resistance to ozone, steam, fire resistant performance.Commonly used for magnetic pump bushing temperature range of rubber and its adaptability to medium.Due to the transmission of mixed media is sometimes, so must be comprehensive consideration of the pump of the media influence.If choose magnetic pump high concentration slurry into the bleaching tower, due to the pulp before entering bleaching tower has been mixed with a variety of bleaching agents such as H2O2, EDTA, NaOH, Na2SiO3, should fully consider the medium effect on magnetic liner material chosen magnetic drive pump is the most beneficial.