Stainless steel centrifugal pump selection principle
1. Make the type and performance of the selected stainless steel centrifugal pump meet the requirements of process parameters such as flow, lift, pressure, temperature, cavitation flow and suction.
2. Mmust meet the requirements of the media characteristics. For stainless steel centrifugal pumps that transport flammable, explosive, toxic or valuable media, it is required to use shaft seals reliably or use non-leakage stainless steel centrifugal pumps, such as magnetically driven stainless steel centrifugal pumps, diaphragm stainless steel centrifugal pumps, shielded stainless steel centrifugal pumps for transporting corrosive media. Stainless steel chemical centrifugal pump requires corrosion-resistant materials for convection parts, such as AFB stainless steel corrosion-resistant stainless steel centrifugal pump. For stainless steel centrifugal pump with solid particle medium, it is required to use wear-resistant material for convection parts. If necessary, use sealing liquid for shaft seal. rinse.
3. High mechanical reliability, low noise and low vibration.
4. The economic consideration should be based on the lowest total cost of equipment, operating, maintenance and management fees.
5. Centrifugal stainless steel centrifugal pump has the characteristics of high speed, small volume, light weight, high efficiency, large flow, simple structure, no pulsation of infusion, stable performance, easy operation and convenient maintenance. Therefore, in addition to the following conditions, centrifugal stainless steel centrifugal pumps should be used as much as possible: When measuring requirements, the metering stainless steel centrifugal pump has high head requirements, and the flow rate is small, and there is no suitable small flow high-lift centrifugal stainless steel centrifugal pump. Reciprocating stainless steel centrifugal pump, if the cavitation requirements are not high, the vortex stainless steel centrifugal pump can also be used. The head is very low, and when the flow rate is large, the axial flow stainless steel centrifugal pump and the mixed flow stainless steel centrifugal pump can be selected. When the viscosity of the medium is large (more than 650~1000mm2/s), you can consider the rotor stainless steel centrifugal pump or the reciprocating stainless steel centrifugal pump (gear stainless steel centrifugal pump, screw stainless steel centrifugal pump). The medium gas content is 75%, the flow rate is small and the viscosity is less than 37.4. For mm2/s, a vortex stainless steel centrifugal pump is available. For the occasion of frequent start-up or inconvenience of stainless steel centrifugal pump, stainless steel centrifugal pump with self-priming performance, such as self-priming centrifugal stainless steel centrifugal pump, self-priming vortex stainless steel centrifugal pump, pneumatic (electric) diaphragm stainless steel centrifugal pump.
