TWO-SECTION ROLLER-AND-BLADE PUMP Russian patent published in 2001 - IPC

FIELD: oil refining, chemical and other industries; high-speed self-suction process pumps. SUBSTANCE: two-section roller-and-blade pump has a housing with working section chambers, rotors with blades, locking devices, toothed mechanism synchronizing rotation of rotors and locking devices, and two-flow working medium inlet and outlet channels. Channels through which working medium is fed into the first section are made in the form of side holes in one of side discs of housing and central hole in shaft which communicates with the second section through radial channels made in one of rotors. Bypass channels between two sections are made bypassing the locking devices in the form of tresses in separating disc. Pressure hole are made in other side disc. EFFECT: reduced hydromechanical losses, increased efficiency. 5 dwg