INTERNAL GEARING ROTARY MACHINE Russian patent published in 2006 - IPC F04C2/10 F01C1/10 

FIELD: mechanical engineering; volume displacement hydraulic machines.

SUBSTANCE: invention relates to hydraulic pumps and engines with internal gearing of rotors, particularly, to their multiphase application. Proposed internal gearing rotary machine has housing with cylindrical space and working medium suction and delivery channels, end face covers, external rotor with internal teeth and working ports in tooth spaces and internal rotor with external teeth installed with eccentricity inside external rotor and rigidly secured on shaft. Suction and delivery chambers are formed between teeth and tooth spaces of both rotors. Ring end face disks are installed between end face covers and end facers of internal and external rotors adjoining end faces of internal rotors for rotation around axis of rotation of external rotor. External rotor is made split with replaceable teeth rigidly coupled with both end face disks to form squirrel cage. End face disks are rigidly secured on external rotor and are provided with axial cavities in peripheral zone uniformly spaced over circumference coaxial with external rotor and limited by two cylindrical surfaces of different curvature forming, at intersection, longitudinal recesses over entire depth of cavities. Surface of each replaceable tooth in contact with housing space is made cylindrical for engagement with the latter and rotating inside. Surface of both end faces of replaceable tooth is limited by two cylindrical surfaces of different curvature forming, and intersection, two longitudinal ribs and made for mating with cavities of both end face disks and arrangement inside them. Longitudinal ribs are arranged inside longitudinal recesses.

EFFECT: improved reliability and increased service life of rotary machine operating in different media, even those abrasive inclusions.

6 cl, 7 dwg