降低渣浆泵的转速能不能提高水泵寿命
    提高泵零件寿命另个途径是降低泵的转速。同时，由于既降低了液流速度又降低了固体颗粒在叶片正面上的浓度，叶轮磨损量大大减少。但是，当Q= const和H= const时，由于转速n降低，将导致泵比转数下降和压水室磨损量增大，所以应该评价所有易损件的相对寿命。
    由于渣浆泵厂家转速降低，叶轮寿命有明显提高，在不同转速时泵参数相应变化的情况下，使用同一台泵是合理的。这样在抽送细颗粒低磨蚀性固液混合物时应该提高转速，而在抽送强磨蚀固液混合物特别是含大颗粒固液混合物时，在参数相应降低的情况下应该降低转速。
    为了减少叶轮(前盖板和副叶片)在由于冲角很大使液流强烈脱流而产生的小流量区工作时的磨损量，采用专门衬里的吸入管的办法适当地提高叶轮入口液流速度。

Can Reducing the Speed of Slurry Pump Improve the Life of Pump

Another way to improve the life of pump parts is to reduce the speed of the pump. At the same time, the wear of impeller is greatly reduced due to the reduction of both the liquid flow velocity and the concentration of solid particles on the front of blade. However, when Q= const and H= const, because the speed n decreases, the pump specific speed decreases and the pressure chamber wear increases. Therefore, the relative life of all vulnerable parts should be evaluated.

Due to the reduction of rotational speed, the life of impeller is obviously improved. It is reasonable to use the same pump when the pump parameters change correspondingly at different rotational speeds. In this way, the rotational speed should be increased when pumping fine particles and low abrasive solid-liquid mixtures, while the rotational speed should be reduced when pumping strong abrasive solid-liquid mixtures, especially those containing large particles.

In order to reduce the wear volume of the impeller (front cover and auxiliary blades) in the small flow area caused by the strong flow of the flow of the impeller, a special liner suction pipe is adopted to properly increase the impeller inlet flow velocity.