G、GH型砂砾泵结构图

密封形式：

Sealing Forms:

1、填料密封：用于吸上或倒灌状态。轴封水压力应比泵出口压力高35KPa，轴封水量为（见表）。

2、副叶轮密封：一般用于倒灌状态，倒灌水头不超过泵总水头的10％，轴功率将增加5％左右。

1、Parking gland:For the suction or gravity condition.The pressure of sealing liquid should be 35KPa higher than the discharge pressure of the pump.The quantity of sealing liqyuid can be seen in following table:

2、Expeller seal: In general for gravity condition the gravity head should not be exceeded to 10% of the total head of the pump and the shaft power will increase by 5% about.

1、泵体Volute                     2、叶轮Lmpeller

3、泵盖Cover                      4、后护板Frame

 plate liner

5、轴承组件Bearing assembly        6、托架Frame

7、填料箱Stuffing box              8、轴Shaft

         填料密封 parking gland                副叶轮密封 expeller seal