Teach you how to achieve high sealing state of Dalian Chemical Pump

Teach you how to achieve high sealing state of Dalian Chemical Pump

The material for static sealing of chemical pumps is generally fluororubber, and polytetrafluoroethylene material is only used in special cases; The material configuration of the dynamic and static rings in mechanical seals is crucial. Hard alloy is not necessarily good for hard alloy, and the high price is one aspect. It is also unreasonable to have no hardness difference between the two, so they should be treated differently based on the characteristics of the medium.

The application of force pumps and shield pumps in the current chemical industry is quite extensive, which is one of the results of the pursuit of leak free selection of chemical equipment. And truly leak free involves the issue of sealing performance when selecting chemical pumps for processing. Here are two basic knowledge about sealing in chemical pumps. Sealing form and sealing material.

There are generally two forms of sealing on chemical pumps, one is threaded connection gasket sealing, and the other is threaded with filling gasket sealing, both of which are used for sealing occasions with small diameter threaded connections. The sealing element for the gasket seal of the threaded electric diaphragm pump is the gasket, while the thread only serves to provide clamping force.

During the operation of the chemical pump, the pressure head generated by the secondary impeller balances the high-pressure liquid at the outlet of the main impeller, thereby achieving sealing. When parking, the auxiliary impeller does not work, so a parking sealing device must be equipped at the same time to solve the possible leakage of the chemical pump during parking.

The vast majority of metal materials are not resistant to hydrochloric acid corrosion (including various stainless steel materials), and molybdenum containing high silicon iron can only be used for hydrochloric acid below 50 ℃ and 30%. Unlike metallic materials, the vast majority of non-metallic materials have good corrosion resistance to hydrochloric acid, so lined rubber pumps and plastic pumps (such as polypropylene, fluoroplastics, etc.) are good choices for transporting hydrochloric acid. The company's applicable products include: IHF fluoroplastic chemical pump, PF (FS) strong corrosion-resistant centrifugal pump, CQ polypropylene magnetic pump (or fluoroplastic magnetic pump), etc.