提高沙石泵气蚀性能的办法

1. 减小几何吸上高度（或增加几何倒灌高度）；

2. 减小吸入损失（管路损失），为此可以设法增加管径，尽量减小管路长度，弯头和附件等；

3. 防止长时间在大流量情况下运行；

4. 降低介质温度（使液体饱和压力降低）；

5. 泵发生汽蚀时，应把流量调小或降速运行；

6. 对密封容器中加压；

7. 对于在苛刻条件下运行的泵，为避免汽蚀破坏，可使用耐汽蚀材料。

8. Methods to improve the cavitation performance of sand and gravel pumps

9. Reduce the geometric suction height (or increase the geometric backflow height);

10. Reduce suction loss (pipeline loss) by increasing the pipe diameter and minimizing the length of the pipeline, elbows, and accessories as much as possible;

11. Prevent prolonged operation under high traffic conditions;

12. Reduce the temperature of the medium (to reduce the saturation pressure of the liquid);

13. When cavitation occurs in the pump, the flow should be reduced or the speed should be reduced for operation;

14. Pressurize the sealed container;

15. For pumps operating under harsh conditions, to avoid cavitation damage, corrosion-resistant materials can be used.