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.

注意功率是否突然增大或降低，流量扬程是否突然减少，如有应停车检查。

Pay more attention

to know if the power suddenly increases or reduces, if the flow and head are

suddenly lessen, if it is, pls stop to check.

3、经常注意检查各部分螺丝是否因振动而松动，如松动应随时上紧。

Check all parts

screws if they are loose, tighten them after finding.

4、耗用功率太大

The power

cumption is too large

1、转速太高

2、传动轴弯曲

3、填料压得太紧

4、轴承磨损或损坏

5、叶轮和前盖摩擦

6、皮带太紧

1.The rotate speed is too high

2.The drive shaft is bend

3.The padding is too tight

4.The bearing is worn out

5.Impeller clashes the front cover

6.The belt is too tight

1、降低转速

2、校直

3、拧松压盖螺栓或将填料取出打扁一些

4、更换轴承

5、调整叶轮端面轴向间隙

6、适应放松

1.Reduce the rotate speed

2.Straightening

3.Loose the cap blot or take our the

padding and make it more flat

4.Change the bearing

5.Ajust the end play of impeller end face

6.Loose the belt to suitable degree

效率下降原因

1、由于水流的冲刷，水泵流道内壁和叶轮过水面变得粗糙不平，水泵内流道的摩阻系数增大，再加上水在泵内的流速很大，水头损失增加。水力效率降低。

2、由于在泵前投加或水质等原因，使泵壳内严重积垢或腐蚀。泵壳内积垢严重的可以使泵壳壁厚增加2ram左右，而且水泵内壁形成垢瘤，使泵体容积缩小、抽水量减少、并且流道粗糙，水头损失增加。客积效率和水力效率都降低。

隔膜泵3、由于水泵加工工艺造成的铸造缺陷、汽蚀、磨蚀、腐蚀和化学浸蚀等原因造成泵流道内产生空洞或裂缝，水流动时产生旋涡而造成能量损失。水力效率降低