SHAFT'S SEAL ASSEMBLY

摘要

The solution falls within the field of packing in pumping technology. It solves the packing of the shaft of the impeller wheel against the pump motor, especially a submersible motor. The classical stuffing nodes are solved by two mechanical packs, which are separated by oil filling. The merit concerns the fact that the magneto-liquid packing is used instead of the second packing, which is located near the bearing, and that the interstuffing space is equipped with an overflow valve. The first packing seals the pumped liquid and its possible leakage into the interpacking space is by an overflow valve connected back into the pit. The second packing prevents a leakage from entering into the bearing and, at the same time, serves as an elastic support for the shaft. The improvement of the sealing properties and a shortening of the overhanging length of the impeller wheel against the bearing is achieved. Additionally, it is not necessary to use the oil filling of the interpacking space and to control the leakage.<IMAGE>