Pump type and scope of application

The type of pump According to the working principle and structure of the pump, the pump types are as follows: The scope and characteristics of the pump shown in Table 1-1, Figure l-1 Table 1-1 Pump Characteristics Index Vane pump Positive displacement pump Axial Flow Pump Vortex Pump Reciprocating Pump Rotor Pump Uniform Uniform Flow Uniform Evenness Unstability, Varies with Pipeline Constant Range / (m3 / h) 1.6 ~ 30000 150 ~ 245000 0.4 ~ 10 0 ~ 600 1 ~ lift characteristic 600 corresponds to a certain flow, only up to a certain head corresponds to a certain flow can achieve different lift, the range of the system is determined by the line 10 2600m 2 ~ 20m 8 150m 0.2 ~ 100MPa 0.2 ~ 60MPa efficiency characteristics ~ ~ highest point in the design, Farther away, the lower the efficiency, the lower the efficiency of high lift, the lower the efficiency of the larger range (the highest point) 0.5 ~ O.9 0.7 ~ O.9 0.25 ~ O.5 0.7 ~ O.85 0.6 ~ O.8 Structural features Simple structure, low cost, small size, light weight, easy installation and maintenance Complex structure, large vibration, large volume, high cost With the centrifugal pump Continued Table Vane pump Positive displacement pump Centrifugal pump Axial flow Pump to Complex Pump Rotor Pump Operation Flow Adjustment Method Outlet Throttling or Changing Rotation Speed ​​The outlet throttling or changing the blade mounting angle can not be adjusted with the outlet valve, only with bypass adjustment. With vortex pump, may adjust the speed and another stroke of the pump with the vortex action and generally there is no self-absorption portion has a dimensional models start with a closed outlet valve is fully open the outlet valve is fully open the outlet valve repair and maintenance is simple and easy trouble scope of lower viscosity Various media Especially suitable for large flow, low lift, low viscosity media Especially suitable for low flow, high pressure low viscosity cleaning media Suitable for high pressure, low flow cleaning media (including suspension or requires no leakage Available diaphragm pump) Suitable for medium and low pressure, medium and small flow, especially for high viscosity medium