Insufficient centrifugal pump pressure will seriously affect the industrial production process, in order to let customers have an early judgment on the cause of the failure, large-scale centrifugal pump manufacturer "Zoomlian pumps" technical staff summarized the following reasons for the insufficient pressure of large-scale industrial centrifugal pumps, if you find that the pump has the following similar conditions in operation, You can contact a professional to repair the pump or pipe to avoid greater damage.
1、insufficient inlet pressure: large centrifugal pumps need a certain inlet pressure to push liquid into the pump body, if the inlet pressure is insufficient, it will lead to a drop in the discharge pressure of the pump. The reasons for the insufficient inlet pressure may be pipeline obstruction, the inlet pipeline is too long or too small, the inlet water level is insufficient, and the inlet valve is not open enough.
2、 impeller wear or damage: the impeller of a large centrifugal pump is the main fluid power component in the pump body, if the impeller is worn or damaged, it will lead to a drop in the discharge pressure of the pump. The wear or damage of the impeller may be caused by prolonged operation, the presence of particulate matter in the liquid, and the high temperature of the liquid.
3、poor seal of the pump body: the poor seal of the pump body of the large centrifugal pump will lead to a drop in the discharge pressure of the pump, which may be the phenomenon of water leakage or seepage inside the pump body, which will reduce the discharge pressure of the pump. The reason for the poor seal of the pump body may be aging, wear, damage, etc.
4、shaft seal failure: the shaft seal of the large centrifugal pump is used to prevent the leakage of the internal liquid of the pump body, if the shaft seal fails, it will also cause the discharge pressure of the pump to drop. The cause of shaft seal failure may be aging, wear, damage, etc.
5、the operating speed of large centrifugal pump is not enough: the discharge pressure of large centrifugal pump is related to the operating speed of the pump, if the operating speed of the pump is not enough, it will cause the discharge pressure of the pump to drop. The reason for the insufficient running speed of the pump may be motor failure, belt slack, transmission system damage, etc.
The above are some possible reasons for the insufficient pressure of large centrifugal pumps, which need to be analyzed and investigated according to the specific situation, and corresponding maintenance and adjustment measures should be taken in time.
Insufficient inlet pressure: Large centrifugal pumps need a certain inlet pressure to push liquid into the pump body, if the inlet pressure is insufficient, it will lead to a drop in the discharge pressure of the pump. The reasons for the insufficient inlet pressure may be pipeline obstruction, the inlet pipeline is too long or too small, the inlet water level is insufficient, and the inlet valve is not open enough.
6、 impeller wear or damage: the impeller of a large centrifugal pump is the main fluid power component in the pump body, if the impeller is worn or damaged, it will lead to a drop in the discharge pressure of the pump. The wear or damage of the impeller may be caused by prolonged operation, the presence of particulate matter in the liquid, and the high temperature of the liquid.
7、 poor seal of the pump body: the poor seal of the pump body of the large centrifugal pump will lead to a drop in the discharge pressure of the pump, which may be the phenomenon of water leakage or seepage inside the pump body, which will reduce the discharge pressure of the pump. The reason for the poor seal of the pump body may be aging, wear, damage, etc.