HW型混流泵为卧式、单级、单吸、悬臂蜗壳式混流泵，适用于农田排灌、工业、城镇给排水及船坞、码头引水等。

I.                  

Application:

HW Spiral

Mixed-flow pump is a horizontal type, single stage, single suction and

cantilever spiral mixed flow pump, which is used for farmland irrigation and drainage,

industry, town water supply and drainage and water diversion of docks.

（一）   特点：

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

II.                

Characteristic:

Small in size,

light weight, large flow, high efficiency, good anti-cavitation performance,

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

maintenance.

密封装置是由填料函、水封圈、填料压盖和铅粉（或油浸）石棉盘根填料组成。其作用有：

   1、启动时防止空气吸入泵内，起密封作用。

   2、抽水时防止水从泵内过多的沿轴大量流出。