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Definition of water pump


Water pump is a kind of hydraulic machinery that converts energy. It converts the mechanical energy of the prime mover (such as an electric motor) into the kinetic and potential energy of the liquid. To transport and improve the purpose of liquid.
Due to the variety of pumps, the classification methods are also different. Usually, the pumps are divided into three types according to their working principles.
1.2.1 Vane water pump
The pumping of the liquid by the vane pump is completed by the high-speed rotation of the impeller equipped with blades. According to the water flow direction of the impeller, the vane pump can be divided into three types: radial flow, axial flow and oblique flow. A pump with a radial impeller is called a centrifugal pump. The flow of liquid particles in the impeller is mainly affected by centrifugal force. The water pump with active flow impeller is called axial flow pump, and the liquid particle is mainly affected by the pumping force when flowing in Mt-wheel. The water pump with oblique flow impeller is called mixed flow pump, which is the transition form of the above two impellers. When the liquid particle flows in the impeller. Both by the centrifugal force. It is also subject to period lift.
1.2.2 Volusible water pump
The pressure delivery of the liquid by the volumetric pump is accomplished by the change of the cellar volume in the working room inside the pump. There are two ways to change the volume of the working chamber: injection and rotation. Belong to the reciprocating motion of the positive displacement water pump piston reciprocating pump, plunger type injection pump, etc.; Belong to the rotary motion of the positive displacement water pump rotor pump.
The schematic diagram of the working principle of the positive displacement water pump is shown in Figure 1.2. When the piston is pulled to the right, the working volume increases, the pressure decreases, the inlet valve opens, the outlet valve closes, and the water in the suction pool is under atmospheric pressure.


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What are the types of pumps?

Pumping station refers to a pumping system composed of mechanical and electrical equipment and supporting buildings with a pump as the core. The pump alone can not work, it needs to work with the power machine, transmission equipment, pipelines and various auxiliary, control equipment to form a complete pumping device to work. In order to ensure the normal work of mechanical and electrical equipment and management personnel, and provide a good water flow condition for the safe and efficient operation of the pump, it is also necessary to build various supporting buildings such as water pump house, water intake buildings, power transformation and distribution facilities, thus forming a water pumping station engineering hub. Water pumping station according to its different characteristics, roughly the following classification.