FIELD: mechanical engineering; pumps.
SUBSTANCE: invention can be used in industries where delivery of liquids with hard inclusions is required. Pump contains housing, guide vane assembly installed in housing and rotor mounted for movement on front and rear bearing supports. Rotor contains screw prepump and centrifugal impellers with bushings and disks in which through holes are made near bushing. Channels are made in disk from both sides which are uniformly distributed over circumference and are limited by covers. Front support of rotor is made in form of rolling bearing whose inner race is reliably attached to outer edges of screw, and outer race is installed in pump housing. Channels formed by working disks and covers of centrifugal impellers are of converging type.
EFFECT: decreased overall dimensions and simplified design of pump intake device and pump as a whole.
2 cl, 1 dwg
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