Pump performance parameters have three sets of data, how to understand the flow, lift, flow speed
The middle parameter is the rated value. The lower limit is the maximum. General use of valve control.
1, the head is composed of a water pump design decisions, such as motor speed, power, blade shape; the flow is determined by the motor power and lift, the same power lift higher flux is small; velocity determined by flow and pipe section with a pump pipeline section greater velocity.2, the pump is to transport liquid or liquid pressurization machinery. It will be the prime mover of the mechanical energy or other external energy transfer to the liquid, the liquid energy increase, mainly used to transport liquids including water, oil, alkali liquid, emulsion, suspension emulsion and liquid metal, but also transport liquid, gas mixtures and liquids containing suspended solids. Pump performance of technical parameters are flow, suction, lift, shaft power, water power, efficiency, etc.; according to the different principles of work can be divided into volume pumps, vane pumps and other types. Displacement pump is to use its studio volume changes to transfer energy; vane pump is to use the rotating blade and water interaction to transfer energy, there are centrifugal pumps, axial flow pumps and mixed flow pumps and other types.
Mainly expressed the ability of the pump, mainly as a basis for selecting the pump users.Lift represents the performance of the pump to boost water pressure. Such as the pump head H=38 meters, that the pump outlet pressure normal to 0.38MPa.The flow rate represents the water supply capacity of the pump. Such as 100 m3/h. The general flow pump design, and the corresponding flow, little significance.
