混流泵

（二）泵蓋是泵與進(jìn)水管相連的零件，其端面與葉輪之間留有規(guī)定的軸向端面間隙（在消除軸承軸向活動(dòng)間隙以后，保持規(guī)定的軸向間隙）。間隙過(guò)小產(chǎn)生磨擦，過(guò)大則會(huì)導(dǎo)致泵內(nèi)壓力水回流，使泵的效率降低，通過(guò)增減調(diào)整紙墊達(dá)到規(guī)定的間隙。

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 small, 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.

3.

Installation base:The soil texture should be firm and solid.

 4.

During installation, keep the pump axile in horizontal p ition.

 5.The end of

water inlet pipe should be immersed under water in about one meter and far away

from the end of mud in about half meter.

 6.After installing the pump,calculate the

suitable suction height and head.Under the stable water level condition,

混流泵

1、混流泵的工作原理

由于混流泵的葉輪形狀介于離心泵葉輪和軸流泵葉輪之間，因此，混流泵的工作原理既有離心力又有升力，靠?jī)烧叩木C合作用，水則以與軸組成一定角度流出葉輪，通過(guò)蝸殼室和管路把水提向高處。

2、混流泵的一般特點(diǎn)

（1）混流泵與離心泵相比，揚(yáng)程較低，流量較大，與軸流泵相比，揚(yáng)程較高，流量較低。適用于平原、湖區(qū)排灌。

（2）水沿混流泵的流經(jīng)方向與葉輪軸成一定角度而吸入和流出的，故又稱斜流泵。

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