The four structural forms of sewage pump impeller

Sewage pumps and other pumps, impeller, water chamber, sewage pump is the two core components. Sewage pump anti-clogging performance, the level of efficiency, and cavitation performance, anti-abrasion performance is mainly by the leaf pump and pressurized water room to ensure the two components. The structure of the impeller of the sewage pump is divided into four categories: blade type (open type, closed type), swirl type, flow channel type (including single channel and double flow channel) spiral centrifugal four kinds. The open half-open impeller is easy to manufacture. When the impeller is blocked, it can be easily cleaned and repaired. However, in the long run, the gap between the blade and the inner wall of the water chamber will increase So that efficiency is reduced. From the performance point of view, the type of impeller efficiency is low, the highest efficiency is about equivalent to about 92% of ordinary closed impeller, head curve is relatively flat.
1, sewage pump swirl impeller.
Pumps with this type of impeller are partially or completely shrinking from the plenum flow path. So no clogging performance is good, the ability of particles and long fiber through the ability of strong. There is no gap due to the increase in wear and tear, in the long run will not cause serious degradation of the problem, the use of the type of impeller pump is suitable for pumping large particles and long fibers containing the media. From the performance point of view, the impeller efficiency is low, only about 70% of ordinary closed impeller, head curve is relatively flat.
2, sewage pump closed impeller.
The type of impeller is generally more efficient. And in the long-term operation of the situation is relatively stable, the use of the type of impeller pump axial force is small, and can be set in front and rear cover sub-leaf. The secondary blades on the front cover reduce the vortex loss of the impeller inlet and the wear of the particles against the seal ring. The secondary blades on the rear cover do not only act as a balanced axial force, but also prevent the suspended particles from entering the mechanical seal chamber to protect the mechanical seal. But the type of impeller is not blocked poor, easy to wrap, should not be drawn with large particles (long fiber) and other treated sewage medium.
3, sewage pump flow path impeller.
The impeller is a leafless impeller, and the impeller runner is a curved runner from the inlet to the outlet. It is suitable for pumping a medium containing large particles and long fibers. Good resistance to blocking. From the performance point of view, the type of impeller efficiency and ordinary closed impeller is not much difference, but with this type of impeller pump head curve is more steep drop. Power curve is relatively stable, difficult to produce super power problem.
4, the sewage pump centrifugal impeller.
The blades of the impeller are twisted helical blades extending axially from the suction port on the conical hub body. The impeller pump and the role of the volume pump and centrifugal pump, suspended particles flow in the leaves, do not hit any part of the pump, so good for good. Destructive to transport. Due to the propulsive action of the spiral, the passage of suspended particles is strong, so the pump of this type is suitable for pumping medium containing large particles and long fibers, and high concentration of medium. In the destruction of the transmission medium has strict requirements of the occasion has obvious characteristics. From the performance point of view, the pump has a steep drop of the curve, the power curve is flat.
At the same time, the sewage pump manufacturers to remind you that: sewage pump flow channel is easy to plug, the pump will be blocked once the pump can not work properly, or even burn the motor, resulting in poor sewage. To the city life and environmental protection have a serious impact. Therefore, blocking and reliability is an important factor in the quality of sewage pump. For more information on sewage pump manufacturers please keep an eye on our website.