LOBE ROTARY PUMP WITH OPTIMIZED INLETS AND OUTLETS

摘要

FIELD: pumps.;SUBSTANCE: invention relates to a rotary pump for injection of liquids and for injection of containing solid substances liquids. Lobe rotary pump (10) includes housing (12) equipped with inlet (14) and outlet (16) expanding to appropriate ends, lining (18) located in housing (12) and at least two opposite rotating rotors (20) located inside lining (18), forming during their rotation pump chambers and compacted in relation to each other and relative to lining (18). In each chamber there are at least two made inside lining (18) recesses (24). Distance from recess (24) to inlet (14) or to outlet (16) is equal to from double to five times value of the size of cross section of recess (24). Lining (18) has in the area of inlet (14) and in the area of outlet (16) bulges (26) reducing the cross sections of inlet (14) and outlet (16).;EFFECT: invention is aimed at creation of a lobe rotary pump, which provides injection without pulsation.;9 cl, 5 dwg