Flood control emergency mobile hand lift diesel fire pump
In civil buildings, there are many types and quantities of electrical equipment, not only fire fighting equipment such as fire pumps and sprinkler pumps. In order to meet the reliability of power consumption of these devices, when the municipal power grid cannot provide two independent power sources, the method of using diesel generator sets as a backup power source in the design is widely used.
The so-called auxiliary impeller hydrodynamic seal of diesel engine fire pump refers to the installation of an open impeller in the opposite direction coaxially near the back of the impeller rear cover plate of the diesel engine fire pump. When the diesel engine fire pump is working, the auxiliary impeller rotates with the main shaft of the pump, and the liquid in the auxiliary impeller also rotates together, and the rotating liquid will generate an outward centrifugal force. pressure at the mechanical seal. On the other hand, the solid particles in the medium are prevented from entering the friction pair of the diesel engine fire pump seal, and the wear of the mechanical seal grinding block is reduced. In addition to the sealing function, the auxiliary impeller of the diesel engine fire pump can also reduce the axial force.
