METHOD OF USING WATER PUMP TO HANDLE LIQUIDS Russian patent published in 2004 - IPC

FIELD: transport engineering.

SUBSTANCE: invention relates to pumps handling cooling liquids at low temperatures in vehicles. According to proposed method, pump impeller is assembled with parts of shaft, is installed to stop by impeller rib edges against surface of conical hole of housing and at least one revolution of shaft in contact with conical hole is done. Maximum outreach of edges at said revolution is determined taking as zero point for calculation found position of maximum axial travel of edges, and edges are displaced relative to said distance by 50-100 mcm forming clearance relative to conical hole. Outreach of edges is adjusted by screw-lock. Wear of bearings to clearance from 50 mcm is compensated for by force of reaction of water layer. Elastic L-shaped section pad is placed in end face of hub and graphitized ring is installed in pad to provide self-alignment of surface of graphitized ring end face relative to fixed end face of graphitized ring of collar. Elastic envelope of collar is fitted in cup of housing with interference by means of three radial equally spaced riffles and fourth radial riffle ring with spheroidal projection taking the form of mated surface and locking position of collar. Tribotechnical flats of graphitized ring are installed to make them coincide in process of rotation and overlap one another by not less than 30-85% in pattern. Pressing of graphitized ring is limited to force not exceeding 160-80 N· S with due account of ageing of rubber mix and placing of springing member inside collar.

EFFECT: improved efficiency of pump.

2 dwg