我們用的8H_3砂泵,由于原設計在桔构上考虑不周,检修周期短,一般运送尾矿浓度30％的情况下,只能用到10天就得检修更换。具体情况是:泵的前后护板,是靠沉入螺絲紧固在前后泵盖上,其固定的可靠性,在使用前看来比较好。但使用时,在高速矿浆的冲洗下,很快在沉入螺絲及护板接触空隙之間产生漩涡,使接触面磨损很快,形成空洞。造成护 We use the 8H_3 sand pump, due to the original design in the orange structure on the ill-considered, short maintenance cycle, the general transport of tailings concentration of 30% of the case, can only be used for 10 days have to repair and replace. The specific situation is: before and after the pump guard, sinking screws are fastened around the pump cover, its fixed reliability, it seems better before use. However, the use of high-speed slurry in the washing, and soon sinking screws and the gap between the shield produce vortex, the contact surface wear quickly, the formation of hollow. Cause care