1. When replacing, the centrifugal pump is selected to be close to the actual operating conditions, ensuring that the replaced pump is always running at high efficiency. We did the efficiency comparison experiment before and after the centrifugal pump replacement. The experiment shows that after replacing the inefficient and high-consumption centrifugal pump, the pump efficiency can be improved by about 10%.
2. Application of frequency conversion energy-saving technology. For centrifugal pumps with design parameters greater than the actual operating conditions, after installing the variable frequency speed control device, it always runs in the high efficiency zone.
3. Promote the application of new energy-saving products such as high-efficiency and energy-saving permanent magnet speed regulating motors and dual power motors on the main centrifugal pumps.
4. Selection of centrifugal pumps. When selecting a new pump, the pump produced by a large manufacturer should be selected to ensure high efficiency of the centrifugal pump.
5. Maintenance of the centrifugal pump. (1) Always check and adjust the centrifugal pump shaft end seal to reduce the volume loss; (2) After the centrifugal pump has been running for 10,000 hours, it should be overhauled to restore the pump efficiency; (3) Spread the ripple on the centrifugal pump. The tube sealing technology completely eliminates the leakage of the centrifugal pump and improves the volumetric efficiency.
6. Regularly clean the filter cylinder, check the pipeline connection, and ensure that the centrifugal pump inlet line is unblocked.
7. Strictly follow the operating rules of the centrifugal pump. Before starting the pump, the disc pump should be opened, the inlet valve should be opened, the outlet valve should be closed, and the exhaust gas should be vented to check whether the inlet pressure of the pump meets the requirements. Prevent cavitation of the pump due to low supply pressure and insufficient flow.
8. When the centrifugal pump is used to pump a slurry stream containing large, medium, and small materials in the liquid, the liquid is sprayed tangentially into the cylindrical chamber to form a vortex, and a portion of the liquid is tangentially removed from the Room exclusion; the slurry is sprayed axially into the chamber, the vortex separating the large size material from the rest of the mud and liquid; the remaining mud and liquid are axially removed from the chamber and injected into the inlet of the centrifugal pump The material from the centrifugal pump is used as the spray liquid for forming the vortex, thereby reducing the wear of the centrifugal pump impeller and improving the efficiency of the centrifugal pump.
9. A method for reducing the wear of a centrifugal pump impeller and improving the efficiency of a centrifugal pump when the centrifugal pump is used to pump a slurry stream containing a large to small size material in the liquid, characterized in that it comprises: a tangentially spraying the liquid Forming a vortex into the vortex chamber and excluding a portion of the liquid tangentially from the chamber; b injecting the slurry axially into the chamber, the vortex separating the large sized material from the remaining mud and liquid remaining; The remaining mud and liquid are removed from the chamber in the axial direction and sprayed into the inlet of a centrifugal pump; d uses the material from the centrifugal pump as the ejection liquid forming the vortex; therefore, the large size The material is discharged to the outer circumference of the vortex, and as a result, medium, small, and sized materials and liquid are sprayed into the centrifugal pump, thereby reducing wear of the impeller and allowing the pump to operate at a high speed, thereby improving efficiency.
10. Regularly check the pump efficiency of the centrifugal pump. For the pump set with low pump efficiency, find the cause in time and take corresponding measures to solve it.
