Introduction of feed pump

    The feed pump is used to filter the slurry supply room. Filter speed depends on the feed pressure, and feed pressure and press strength and feed pump head on. So the choice of feed pump in slurry conveying performance considerations, but also to the feed pump and filter matching. Common feed pumps are centrifugal pumps, screw pumps, Luo Cibeng, diaphragm pumps, piston pumps, etc.. The current industrial production using a centrifugal pump with common pump, stainless steel pump, mud pump, slurry pump, resistance to corrosion on plastic pump and so on.

    1, pump selection principle

    1) to the selected pump type and performance can meet the plant flow, lift, pressure, temperature, flow cavitation, suction process parameters such as requirements.

    2) must meet the media characteristics requirements: for conveying flammable, explosive, toxic or expensive medium pump, shaft seal reliable or use no leakage of the pump, such as magnetic drive pump, diaphragm pump, shield pump. For conveying corrosive medium pump, requested by convection component corrosion resistant material, such as stainless steel Naifushibeng AFB, CQF engineering plastic magnetic drive pump. For conveying solid particles in the pump for convection component wear-resistant materials used, if necessary, seal with the clean washing liquid.

    3) mechanical properties, high reliability, low noise, small vibration.

    4) the total cost of equipment, operation, maintenance and management is considered to be the lowest.

    5) centrifugal pump has high speed, small size, light weight, high efficiency, large flow, simple structure, no pulse infusion, stable performance, easy operation, convenient maintenance, and so on characteristics. Therefore, in addition to the following circumstances, should give priority to the use of centrifugal pump.

Special situation of stainless steel chemical pump:

    1) when the measurement requirements, the use of metering pump.

    2) lift requirements is very high, the flow is small and there is no suitable small flow and high lift centrifugal pump optional, available reciprocating pump, such as cavitation requirement is not high also can use of vortex pump.

    3) the head is very low, the flow is very large, the optional axial flow pump and mixed flow pump. (ordinary hydraulic filter press series)

    4) medium viscosity is large (greater than 650~1000m square meters with the / s), considering the selection of rotor pump or reciprocating pump (gear pump, screw pump).

    5) medium containing 75% of volume, flow rate and viscosity of less than 37.4 square meters of M /s, optional vortex pump.

    6) for frequent starting or irrigation pump disadvantageous situations should be selected with the self suction performance of pump, such as self suction centrifugal pump, self priming vortex pump, gas dynamic (electric) diaphragm pump.