The outstanding characteristic of mechanical products used in chemical industry is that the performance requirements of mechanical products vary with the types and properties of the chemical media being transported. Although the medium sometimes refers to water, oil or other non-harmful substances, in most cases, the chemical media refers to some very terrible chemical raw materials.
The characteristics of chemical pump are high quality, high reliability and high environmental protection performance. However, in the production process of chemical pumps, various specific conditions and purposes of use put forward different requirements for the manufacture of chemical pumps. Standardization is very helpful and meaningful for the production and use of chemical pumps. It is believed that only from the user's point of view can we establish long-term strategic partnership with suppliers, and establish different standardization levels and integrated modular structures within clearly defined different levels.
Centrifugal pump is one of the most commonly used pumps in our industrial production, chemical anti-corrosion centrifugal pump is one of them. It makes the liquid flowing through the impeller subject to centrifugal force through the impeller, improves the mechanical energy of the liquid, thus carries on the liquid transportation. It is a machine to increase the energy of the liquid. Because of the special requirements of chemical production for pumps, chemical centrifugal pumps have the following outstanding characteristics compared with other centrifugal pumps: they can meet the needs of chemical technology: pumps in chemical production, not only need to transport liquid materials and provide the necessary pressure required by the process, but also need to ensure the quantity of materials transported. In certain chemical unit operation, the flow and head of pumps are required to be stable and guaranteed. High efficiency and reliable operation with pump. Corrosion resistance: Chemical pump transport media, including raw materials, reaction intermediates, etc. are often corrosive media. This requires that the material selection of the pump is appropriate and reasonable to ensure the safe, stable and long-life operation of the pump. Liquids in critical state tend to vaporize when temperature rises or pressure decreases. Chemical pumps sometimes transport critical liquid, once the liquid vaporizes in the pump, it is easy to cause cavitation damage, which requires that the pump has a high anti-cavitation performance. At the same time, the vaporization of liquid may cause friction cementing of the dynamic and static parts of the pump, which requires a larger clearance. In order to avoid the mechanical seal, packing seal and labyrinth seal damaged by dry friction due to the vaporization of liquid, this kind of chemical pump must have the structure of fully eliminating the gas occurring in the pump.