GLANDLESS ELECTRIC PUMP WITH DC THYRATRON MOTOR Russian patent published in 2003 - IPC

FIELD: mechanical engineering; glandless pumps. SUBSTANCE: electric motor, except for electronic switch, is placed inside pump housing and is washed by handled liquid. Stator is made in form of disk with armature winding encapsulated with compound. Disk of stator is clamped through sealing gaskets between two parts of pump housing. Rotor consists of two disk-like parts arranged at both sides from stator disks and installed on combined ball bearing support. Combined support is formed by disks of rotor and stator on end face surfaces of which pointed to each other races are made for balls. Balls, together with stator disk, create reaction of support equalizing axial force of attraction of rotor disks provided by permanent magnets installed on said disks. To increase service life of support, bearing races can be provided with solid layer coating made, for instance, of aluminum dioxide, and balls are made of ceramics. Each rotor disk can be provided with registering bosses and cavities providing coupling of disks and transmission of torque. EFFECT: simplified process of pump manufacturing, simplified design, increased service life and reduced noise in operation. 5 cl, 6 dwg