混流泵
轴套用来保护轴不使它与填料直接摩擦,若长期使用中发现轴套磨损过多,必须换轴套。
IV. Axile sleeve is used to protect the axle from friction
with padding.In long term using, change the axile sleeve
when the sleeve wears down too much.
(五)水泵轴的两个支承是轴承体内的轴承,轴承体内存有适量润滑脂以润滑轴承。
V. Two supportings of water pump axile are bearings in
bearing body.There is some lubricating grease in bearing
body for lubricating bearing.
7、填料发热
The padding is
hot
1、填料压得太紧或四周紧密度不够2、填料压得偏斜与轴磨损严重
1.The padding is
pressed too tight or the around compactness is not enough
2.The padding is
pressed deflected and the axile wears seriously
1、旋松压盖螺栓高速填料紧密度
2、松开压盖重新均匀地上紧
1.Loosen the gland bolts to adjust
2.Loosen the gland bolts and tighten it again.
4、叶轮表面的气蚀。由于叶片背水面运行时产生负压,当压力Pklt;Pva时,产生汽穴和蜂窝表面后,在电化学腐蚀作用下,使泵叶汽蚀。
5、容积损失和机械损失。由于泵使用时间长,机械磨损产生漏失和阻力增大,使容积效率和机械效率降低。
以上原因,使水泵性能变差。运行效率降低2~5%,严重的可以使水泵效率降低10%以上。
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