Water pumps are machinery that carry or supercharge liquid. It transmits the mechanical energy or other external energy of the prime motive force to the liquid, increasing the liquid energy, mainly used to transport the liquid including water, oil, acid base, emulsion, suspension emulsion and liquid metal.
Liliquids, gas mixtures and liquids containing suspended solids. The technical parameters of water pump performance include flow, suction, head, shaft power, water power, efficiency, etc. According to different working principles, volume pump, blade pump, etc. Volume pump uses the change of its studio volume to transfer energy; blade pump uses the interaction of rotary blade and water to transfer energy, including centrifugal pump, axial flow pump and mixing pump.
Water pump motors shall be divided into horizontal motors and vertical motors. Because the working characteristics of the water pump are relatively small starting moment, relatively small starting frequency and relatively long continuous operation time, so most of the water pump motors are the asynchronous motor or synchronous motor of the mouse cage rotor.
Water pump motor should be selected according to the shaft power; motor power is greater than the shaft power one level; for example: shaft power is 15KW, select the motor should be: 18.5KW as for several pole motor, according to the actual working conditions.2. Polar motor is generally used in the case of slightly high lift and low flow rate (the calculation is more complicated). Four-pole motor can be selected for occasions with large flow rate and small lift. Large flow rate, the low head choice of the 4 or 6-pole motor, when choosing the six-pole motor, the power can be reduced by one level according to the shaft power.
