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混流泵

（一） 特点：

体积小、重量轻、流量大、，抗汽蚀性能好，区范围宽广而平坦，结构简单，使用方便，维修容易。

I.

Characteristic:

***all in size,

light weight, large flow, high efficiency, good anti-c***itation performance,

board and flat efficient areas, simple structure, easy operation, easy

maintenance.

（二）泵盖是泵与进水管相连的零件，其端面与叶轮之间留有规定的轴向端面间隙（在消除轴承轴向活动间隙以后，保持规定的轴向间隙）。间隙过小产生磨擦，过大则会导致泵内压力水回流，使泵的效率降低，通过增减调整纸垫达到规定的间隙。

II. Pump cover is

the part connected with water inlet pipe.There is an stated axial end face gap

between its end

face and

impeller(Keep the stated axail gap after removing the bearing axial movable

gap).Friction will be

produced if

the gap is too ***all, contrary, if the gap is too large, the pressure water in

pump will reflux which

makes the

feeiciency reduced.Adjust the paper washer and make the gap be stated one.

开车顺序：

1、关闭出口闸阀

2、将水注入水泵，以排除进水管及泵内空气，可从泵体顶端引水杯注入清水，也可用真空泵注水（开动真空泵，排除水泵及管内气体在水充满水泵的同时，起动水泵，打开闸阀，停止真空泵）。

3、开启电动机（注意水泵的旋转方向）。

4、当电动机正常运转后，逐步开大闸阀，达到所要求的工况后，调节填料松紧。若水泵运转，轴承温度等都正常，则可继续运行。

III. Starting

Sequence

1.Close the oulet

sluice valve.

2. Inject

water into pump to remove the air in water-in pipe and pump which can realized

by injecting clear water from the water diversion cup of the pump body end or

by vacuum pump(start the vacuum pump, remove the air from pump and pipes, start

the water pump when the pump is full of water, open the sluice valve, stop the

vacuum pump).

3. Start the

motor(pay more attention on the rotation direction of pump)

4. When the motor runs normally, turn up the

sluice valve gradually, adjust the tightness of padding when gettng to the

required working condition.If the pump runs well, the temperature of bearing is

normal, and it can run sequentially.

Failure Casues and Resolving Methods

故障现象

Failures

原 因

Reas

消 除

方 法

Methods

1、水泵不出水

No water are

runing out

1、引水不够真空泵抽吸空气不尽

2、进水管路进气

3、水泵转速太低

4、吸程太高

5、水泵转向不对

6、输水高度超过规定

1.The diversion is not engouth or the

vacuum pump does not remove all air

2.Air suction for inlet pipes

3.The rotate speed of pump is too low

4.Suction head is too high

5.The turnning direction is not right

6.Water delivery height exceeds stated

one.

1、继续加灌或抽气

2、检查并堵塞之

3、用转速表检查予以调整

4、降低安装位置减少吸程

5、改变旋转方向

6、减少输水高度

1.Continue filling or removing air

2.Check and seal it

3.Check by tachometer and adjust it

4.Reduce the installation po ition,

reduce the suction head

5.Change the turnning direction

6. Reduce water delivery height