混流泵
HW型蜗壳式混流泵按***标准 新系列而设计的***节能产品。其性能指标均达到国 先 水平，省材节能效果显著。
HW Spiral Mixed-flow Pump is an efficient pump designed by latest
national standard.The performance indexes h***e been upto the international
advanced level and the material and energy s***ing result is remarkable.
（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.
4. 水泵的安装位置应满足允许吸上真空高度的要求，基础必须水平、稳固，保证动力机械的旋转方向与水泵的旋转方向一致。
5. 若同一机房内有多台机组，机组与机组之间，机组与墙壁之间都应有800mm以上的距离。
6. 水泵吸水管必须密封良好，且尽量减少弯头和闸阀，加注引水时应排尽空气，运行时管内不应积聚空气，要求吸水管微呈上斜与水泵进水口联接，进水口应有一定的淹没深度。