Method for reducing dry grinding of self-priming pump and self-priming pump control system

The invention relates to the field of chemical wastewater treatment, in particular to a method for reducing dry grinding of a self-priming pump and a self-priming pump control system. The method comprises the steps of acquiring pressure information, wherein the pressure information is the pressure collected by the liquid outlet end of the self-priming pump during working; judging whether the self-priming pump is in a dry grinding state or not based on the pressure information and a preset pressure value; and if the self-priming pump is in the dry grinding state, outputting a stop signal to control the self-priming pump to stop. The probability that the self-priming pump is damaged in the dry grinding state can be reduced. 本申请涉及化工废水处理的领域，尤其是涉及一种减少自吸泵干磨的方法及自吸泵控制系统，其包括获取压力信息，所述压力信息为针对自吸泵在工作时的出液端所采集的压力；基于所述压力信息和预设的压力值判断自吸泵是否处于干磨状态；若是自吸泵出于干磨状态则输出停机信号以控制自吸泵停止。本申请能够减少自吸泵在干磨状态被损坏的几率。