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Pump definition and classification
First, the definition of pump Pump is the prime mover mechanical energy into liquid energy machine. Pump used to increase the liquid energy, pressure energy, kinetic energy (high-speed liquid energy). The prime mover drives the impeller to rotate through the pump shaft to work on the liquid to increase its energy, so that the required amount of liquid is transported from the sump to the required height or pressure through the pump overcurrent component. Second, the pump classification Many types of pumps, according to their role can be divided into the following three categories: 1, vane pump vane pump is also a dynamic pump, this pump is continuously applied to the liquid energy, such as centrifugal pump , Mixed flow pump, axial flow pump, etc. 2. Positive displacement pump In this type of pump, the liquid is filled and circulated through the closed and cyclical changes, so that energy is applied to the liquid discontinuously, such as piston pump, gear pump and screw pump. 3, other types of pumps The role of these pumps vary in principle, such as jet pump, water hammer hammer pump, electromagnetic pump and so on. Pumps are categorized as follows: Vane pumps Centrifugal pumps: Single stage (single suction / double suction / self-priming / non-suction), multistage (segmented, (Fixed vanes, adjustable vanes) Axial pumps: fixed vanes, adjustable vortex vortex pump: single stage, multistage, self-priming, non-priming positive displacement pump reciprocating pump: (piston, plunger) (Single Cylinder, Double Cylinder), Electric Reciprocating - Single Action (Single Cylinder, Double Cylinder) Rotor Pump: Screw Type (Single, Double and Triple Screw), Gears (Internal and External), Circulating Piston Internal circulation, external circulation), vane, cam, axial piston, radial piston type other jet pump, gas pump, water hammer pump, electromagnetic pump, water pump and so on.