FIELD: machine building.
SUBSTANCE: invention relates to screw gerotor hydraulic machines. Screw hydraulic machine comprises stator, which is a tubular housing 10 with fixed in it cover 6 made from elastic material with internal screw teeth 5. Inside stator there is an eccentrically arranged rotor 2 with external spiral teeth 1, number of which is one less than number of teeth 5 of cover 6. Passages screw teeth 5 and 1 of cover 6 and rotor 2 are proportional to their numbers of teeth. Vertices of teeth 5 of cover 6 of stator have offset towards maximum fluid pressure acting during operation of hydraulic machine. Mid axes 7 of profiles of teeth 5 are inclined in same direction.
EFFECT: invention is aimed at increasing operating torque and efficiency of hydraulic machine used in working mode, and working pressure and efficiency in operation as a pump, to increase reliability of starting hydraulic machine after stopping in well and longer service life of hydraulic machine.
4 cl, 9 dwg
