CENTRIFUGAL PUMP Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: working wheel of double-sided intake is mounted on a shaft within a housing to form slot seals and pockets. A plug is mounted on the wheel hub from the side of the cantilever part of the shaft. The wheel is coupled with the shaft for radial and angular movement. The wheel and housing are provided with blades received in one of the pockets. A bushing is mounted in the housing with a spaced relation and is opposite to the plug. Throttle passages and relief chamber are made in the bushing. The chamber is in communication with the delivery space through passages and with suction zone trough the space. EFFECT: enhanced efficiency. 1 dwg