武汉螺杆泵定转子承诺守信 螺耐斯环保设备公司

　隔膜压滤干化工艺

　　污水处理过程中产生的污泥通过泵输送到污泥处理池内，经过加药调质(药剂PAM和絮凝剂），搅拌处理，污泥与药剂充分反应，污泥含水率调理为95%~97%，再通过泵输送到污泥隔膜压滤机内，经过过滤压榨后，分解成含水率较低的干污泥与滤液（滤液可以进一步回收）。

　　优点：脱水后的污泥含水率较低，基本满足焚烧要求，因为在低浓阶段脱水效率很高，采用分级处理措施后，能耗较低。

污泥螺杆泵是煤矿企业生产、生活的主要设备,其耗电量约占企业总电耗30%以上。根据现场调查,目前矿井供、排污泥螺杆泵的实际运行效率偏低有以下主要原因。

　　1.污泥螺杆泵选型不当,长时间运行的供污泥螺杆泵大多选用GC型泵,效率明显低于D型或DG型泵。

　　2.污泥螺杆泵扬程过大,无法在工况点运行。

　　3.安装调整不当,如叶轮出口与导叶对中偏移,出口阻力增大使轴向不能平衡,进出管弯头、三通不合格等,严重影响运行效率或导致运行失效。

　　4.配件、附件磨损未及时维修更换,加剧泄漏和摩

If you ignore the steam pressure, fluid dynamic friction loss and wellbore liquid pump suction, open an open chamber the maximum production pressure difference is 0.1Mpa, as long as the pressure drop between the inlet and the chamber to form a chamber is less than the pressure difference, the wellbore fluid will be filled with the chamber, then screw pump can achieve the displacement perturbation theory.当流体压力降到蒸汽压力以下，则出现气蚀现象。如果一部分敞开的腔室被流体的蒸汽所充满，当腔室封闭、转子施加正压力后，蒸汽则凝析，会使泵出现脉动和噪音。因此，为使泵能达到其理论排量和正常运转，要求流体压力大于其蒸汽压力，并且吸入压降小于


Ｂ、流体粘度对工况的影响The effect of B and fluid viscosity on the working condition随着流体粘度的增加，由于产生较高的压降使泵的排量下降。As the viscosity of the fluid increases, the displacement of the pump decreases as a result of high pressure drop.Ｃ、泵磨损影响Effect of C and pump wear螺杆泵的工作转速通常为40至500r/min，为减少由于磨损而带来的维修工作量，应当随流体的磨蚀性增加而降低泵的转速。研究表明，泵的磨损与流体流速成正比，但是低的转速对井下泵的使用寿命又产生不利的影响。The working speed of the screw pump is usually 40 to 500r/min. In order to reduce the maintenance workload caused by wear, the speed of the pump should be reduced with the increase of the abrasive wear of the fluid. The study shows that the wear of the pump is proportional to the flow velocity of the fluid, but the low speed of the pump has a negative effect on the life of the downhole pump.