Single-stage and single-suction centrifugal pump adopts horizontal single-stage and single-suction structure, and the suction inlet of pump adopts horizontal suction end, which largely solves the air generation of pump. When the cavity of pump is full of medium, under the rotation of centrifugal force, the medium is discharged in the direction of the impeller rotation upward. The Efficiency is up to 70% or more, is a high-efficiency equipment to solve the equipment pressurization. The axial seal ring of the pump is composed of packing gland, packing ring, packing and so on, in order to prevent air intake or large water leakage.
If the impeller of the pump is balanced, the cavity with the soft packing is connected with the impeller suction port. If the liquid at the impeller inlet is in a vacuum state, it is easy to enter the gas along the surface of the sleeve, so the packing ring packing chamber will lead to the pump room pressure water to fill the ring to seal through the small hole in the pump cover.
If there is no balance hole on Pump impeller, the impeller back of the liquid pressure is greater than atmospheric pressure, so there is no problem of steam leakage, it can be installed without packing ring.