Pumps in the chemical industry, petroleum, paper, flood control, food and other industries increasingly prominent role, so choose a cost-effective pump products is particularly important, on this basis, to understand the pump performance parameters are very Necessary. Today, Xiao Bian here for you to introduce pump parameters which, for your reference when purchasing pump products. What are the basic parameters of the pump? 1, flow Q flow is the amount of liquid delivered by the pump in a unit of time (volume salty mass). Volume flow Q said, the unit is: m3 / s, m3 / h, L / s and so on. Mass flow Qm said, the unit is: t / h, kg / s and so on. The relation between mass flow and volume flow is Qm = ÏQ where Ï - density of liquid (kg / m3, t / m3) Ï = 1000 kg / m3 at room temperature. 2, head H head is pumping unit weight of liquid pumping from the pump inlet (pump inlet flange) to the pump outlet (pump outlet flange) the value of energy. Which is the effective energy of a Newtonian liquid through the pump. The unit is N • m / N = m, which is the liquid pumping column pumping liquid height, used to refer to as rice. 3, speed n speed is the number of revolutions per unit time of the pump shaft, symbol n, unit is r / min (rev / min). 4, NPSH NPSH NPSH, also called net positive nozzle, is the main parameter of cavitation performance. Naphthenic margin of domestic use â–³ h said. 5, power and efficiency Pump power usually refers to the input power, that is, the prime mover to the shaft power, it is also known as shaft power, with P said. Effective power pump, also known as output power, with Pe said. It is the unit of time delivered from the pump liquid in the pump to obtain effective energy. Since the head is the pump's effective weight of liquid output from the pump, the product of the head and mass flow and gravitational acceleration is the effective energy obtained from the pump's output of liquid per unit of time-the pump's effective power. Extended reading: Shanghai Chemical Equipment Industry Exhibition Industry Leaders Zibo vacuum pump manufacturers This article belongs to Industrial Internet (Xiamen) Technology Co., Ltd. All are welcome to reprint, please indicate the author and source. Author: Asian pumps Network Editor: Yue Lijuan (QQ / micro letter:) starting: http: //beng.liuti.cn/ (service hotline:)
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