渣浆泵型号的确定与选择

一、 泵型号的确定方法

确定了泵的性能、泵的型式后就可以确定泵的具体型号。泵型号的确定介绍下面两种方法:
1.查性能表法
    泵的样本或说明书上都列有性能表，每一型号的泵都列出了流量Q、扬程H、转速n、轴功率P、配用功率Pg、效率及必需汽蚀余量NPSHR(或允许吸上真空高度等一组性能参数。 有的列出的是一个流量点(规定流量点)的一组性能参数，有的列出了三个流量点的三组性能参数，中间的流量点为规定的流量0。的性能参效，其他两个流量点分别为小流量点Qmin和大流量点Qmax点的性能参数。选用泵时，应尽量选规定流量点的性能参数，运行较为经济、安全。如果选不到，也可在小流量Q.和大流量0.范围内选用。当泵的流量、扬程选择好后，还要校核泵的汽蚀余量，样本中的是必需汽蚀余量NPSHR,应小于装置要求的可用汽蚀余量( 或称装置汽蚀余量) NPSHA， 如果汽蚀性能不能满足，此型号泵也不能使用，而要重新选择。泵转速低一点，汽蚀性能会好一点。渣浆泵厂家

Determination and selection of slurry pump model

I. determination method of pump model

After the performance and type of the pump are determined, the specific model of the pump can be determined. The following two methods are introduced to determine the pump model:

1. Check the performance table

The performance table is listed on the pump sample or instruction manual. Each type of pump lists a set of performance parameters, such as flow Q, head h, rotating speed n, shaft power P, matching power PG, efficiency and NPSHr (or allowable suction vacuum height) Some lists a set of performance parameters for a flow point (specified flow point), some lists three sets of performance parameters for three flow points, and the middle flow point is the specified flow 0. The other two flow points are the performance parameters of small flow point qmin and large flow point Qmax. When selecting the pump, the performance parameters of the specified flow point shall be selected as far as possible, so that the operation is more economical and safe. If not, it can also be selected in the range of small flow Q. and large flow 0. When the flow and head of the pump are selected, the NPSHr of the pump shall be checked. The required NPSHr in the sample shall be less than the npsha required by the device. If the NPSHr cannot be met, the pump of this type shall not be used, but shall be re selected. If the pump speed is lower, the cavitation performance will be better. Slurry pump manufacturer