Sealing problem of chemical submerged pump

    No leakage is always the pursuit of chemical equipment. This requirement leads to the application of the shield pump and the magnetic pump. However if we want to do truly no leakage, it  is still a long way to go, such as the life of the magnetic pump’s isolation sleeve and shielding pump shielding set, the material issues of the pitting, reliability problems of static sealing and so on. Simple introduction of the sealing is as follows:
    1.the form of the sealing
    The form of the sealing usually only has gasket and sealing ring in two forms for static sealing. While the O-rings is used most widely for the sealing ring. Chemical pump rarely uses the packing seal for dynamic seal and mechanical seals is based. But the mechanical seal has single face and double faces, balanced and non balanced type. The balance type is enforceable in medium of the high pressure seal (it usually refers to the pressure is greater than 1.0MPa). The double end face of the mechanical seal is mainly used for the medium of high temperature, easy to crystallize, viscosity, containing particles and toxic volatile. The double end face of the mechanical seal shall be to seal cavity implantation isolation liquid, the pressure is generally higher than 0.07 ~ 0.1MPa of the medium pressure.
    2 sealing material
    Static sealing materials of the liquid chemical pump commonly use fluorine rubber. It uses the PTFE material in special condition. The material configuration of the mechanical seal ring movement is the key. And it is not best the hard alloy for the cemented carbide . The price is high on the one hand, the two are not hardness difference and unreasonable, so the best is based on discriminate between the media characteristics.
    If you want to know more about the content of chemical submerged pump seal, please to see official website of Warwick pump company: www.moltensaltpump.com