The centrifugal pump has some impellers and the back boards have even holes. What is the purpose of these holes?
These holes are evenly distributed on the impeller hub generally has several roots, leaves several holes, the impeller inlet and the rear cover Unicom space after. When the pump work, back cover and the pump cover filled from the outlet of impeller into the medium, the pressure is approximately equal to the impeller outlet pressure, through a balance hole is that you can make uniform holes. The back pressure is equal to the entrance pressure, so as to balance the axial force function. As for what the axial force and its production, you can search on the Internet, there are many explanations.
Pump impeller is to do the balance test, grinding off ~!Because the casting out uneven weight, the rotation will be partial, so to wear off, machine grinding, so the rules.
The back pressure is equal to the inlet pressure, so as to achieve the function of balancing the axial force.These holes are evenly distributed on the impeller hub generally has several roots, leaves several holes, the impeller inlet and the rear cover Unicom space after. When the pump work, back cover and the pump cover filled from the outlet of impeller into the medium, the pressure is approximately equal to the impeller outlet pressure, through a balance hole is that you can make uniform holes. The back pressure is equal to the entrance pressure, so as to balance the axial force function.
