What reason can let blowdown pump run efficiency to drop?

Shandong Hairui Zhonglian Pump Industry Co. , ltd. The blowdown pump that is a major produces manufacturer. When type selecting of client blowdown pump, manufacturer of my company water pump can provide the before-sales service such as price of pump of blowdown pump model, blowdown, in order to offer client reference, and manufacturer of my water pump can provide the service of product of custom-built pump industry for the client. This product information is the knowledge that about blowdown pump moving efficiency drops:

Blowdown pump is blowdown system in main component, assuming huge safety responsibility, the moving efficiency of blowdown pump is deciding the work efficiency of blowdown system directly. Sometimes, we can discover the moving efficiency of blowdown pump dropped possibly, what reason is this cause? Hairui Zhonglian Pump is analysed for everybody those who cause blowdown pump to run efficiency to drop a few kinds likelihood reason.
One, surface of blowdown pump impeller is caused by cavitation erosion. Blowdown pumpThe impeller blades when moving carries surface on the back to be able to generate negative pressure, be in negative pressure for a long time to fall, problem of incidental cavitation erosion.
2, loss of blowdown pump cubage and mechanical loss cause. Blowdown pump is in long job, mechanical wear produces leakage estrangement obstruction to increase, reduced cubage efficiency and mechanical efficiency.
3, the coefficient of friction inside pump increases cause. Blowdown pump is in long-term job, current is mixed to wall ceaselessly impeller crosses surface to form erode, create the appearance thereby coarse, increased frictional resistance coefficient, bring about hydraulic loss of efficiency.
4, blowdown pump machines craft to cause in manufacturing process. Because machine the membrane pump of casting membrane pump that craft causes to build blemish, cavitation, abrasion, corrode and the reason such as chemical dip corrode causes the generation inside blowdown pump flow path empty or interstitial, pump of blowdown of the generation when current is moved is vortical and cause energy loss.
5, the scale inside blowdown pump pump case or be corroded to cause. Blowdown pump suffers the effect that throws the medicaments that add or water quality, cause pump case inside serious scale or be corroded, water pump wall forms dirty tumour, make quantity of contractible, pump water reduces pump housing volume, and flow path is coarse, head loss increases.
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