FIELD: mechanical engineering; pumps.
SUBSTANCE: invention relates to gear pump used for handling of high viscosity materials. According to invention, proposed gear pump has housing, gear stage with one sun gear and several planet pinions rigidly installed on housing. Pump includes inlet auger stage containing shaft of inlet auger connected with sun gear without possibility of turning over and inlet transfer-and-mixing section, and outlet auger stage containing shaft of outlet auger installed without possibility of turning over with sun gear, and outlet transfer-mixing section. Shafts of auger on transfer-mixing sections have depth of screw cut decreasing in direction of gear stage. Screw channels terminating between planet pinions are made in housing opposite to coils of screw cut of auger shafts increasing in section in direction to gear stage.
EFFECT: provision of reliable self-cleaning of gear pump, possibility of use of low-wear bearings which do not require special servicing.
9 cl, 2 dwg
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