How to effectively extend the service life of sewage pump

Submersible sewage pump has more and more get people's attention, the scope of use is becoming more and more widely, from simply used to transport water to the present can transport all kinds of sewage and industrial waste water, construction drainage, liquid feed and so on. In the municipal engineering, industrial, hotel, hospital, building, water conservancy construction and plays an important role in all walks of life.

The most critical problem for diving sewage pump is reliability problems, prolong the service life of the pump. Because of the use of submersible sewage pump occasions is under liquid; Transmission medium are some of the mixed liquid containing solid material; Pump and motor in close proximity; Pump for vertical layout, with the impeller rotating components weight under water stress direction. These problems can make diving sewage pump in a sealed, motor bearing capacity, bearing arrangement and selection requirements is higher than general sewage pump. In order to effectively prolong the life of diving sewage pump, set in the diving sewage pump protection system is very necessary, it can effectively protect the safe operation of electric pump. But this is not the crux of the problem, the protection system is just after the pump failure of a remedy, is a relatively passive approach. The crux of the problem should be from the root, a thorough solution to pump in a sealed, overload and other problems, it is a more active way. We deputy hydrodynamic impeller seal technology and design technique is applied to the overloading of the pump submersible sewage pump to improve the pump seal reliability and carrying capacity, prolong the service life of the pump. Import valve pump Custer wine

A, vice impeller hydrodynamic sealing technology applications:

Deputy hydrodynamic impeller seal refers to the near the back of the pump impeller HouGaiBan coaxial install a open impeller in the opposite direction. When the pump work, vice impeller with pump shaft rotation, the deputy impeller together with the liquid will be rotate, rotating liquid will produce an outward centrifugal force, the centrifugal force on the one hand, standing up to the liquid flow to the mechanical seal, reduces the pressure of the mechanical seal. Solid particles on the other hand to stop the medium into mechanical seal friction pair, reduce the wear of mechanical seal grinding block, prolong its service life. Vice impeller besides sealing effect, still can rise to reduce the effect of axial force, the submersible sewage pump axial argued that if the role of the liquid in the differential pressure force on the impeller and the rotating part of the force of gravity, the role of the two forces direction is the same, the resultant force is composed of two forces combined. As you can see, in the case of performance parameters of the same, the submersible sewage pump axial force is bigger than the general horizontal pump, and balance the difficulty is harder than the vertical pump. So in the submersible sewage pump, bearing is easy to damage the reason also has a lot to do with large axial force. And if installed vice impeller, liquid on the role of the vice impeller of differential pressure force direction is in contrast to the composition of the two forces, so that we can offset part of the axial force, also have the effect of the extend bearing life. But using vice impeller sealing system also has a drawback, that is on the vice impeller part consumes energy, usually at around 3%, but as long as reasonable design, this part can reduce the loss to the minimum.