PUMPING SET Russian patent published in 1994 - IPC

FIELD: manufacture of pumps. SUBSTANCE: arranged in hermetic casing 1 which is provided with inlet branch pipe 2 and outlet branch pipe 3 are electric motor and pumping unit; pumping unit has housing 6 with end plates 8 and 9, rotor 10 mounted on drive shaft 15 forming working chambers, bearing supports 16 and 17 and working medium supply passage 19 and discharge passage 20. Rotor 10 is provided with bush 14 embracing shaft 15 in a spaced relation. Shaft is mounted in supports 16 and 17 secured in casing 1 and is kinematically linked with rotor 10 by means of coupling 18. EFFECT: enhanced reliability. 3 dwg