SCREW-TYPE PERISTALTIC HYDRAULIC MACHINE Russian patent published in 2002 - IPC

FIELD: hydraulic machinery engineering; pumping high-pressure high-viscosity liquids containing considerable amount of mechanical admixtures. SUBSTANCE: hydraulic machine has cylindrical housing with suction and discharge ports. Eccentric cylindrical rotor arranged in housing is set in rotation by means of shaft. Elastic chamber having flexible partition is mounted between housing and rotor. Flexible partition is mounted along axis of hydraulic machine along helical line for forming some elastic chambers separated at areas where partition is pinched by rotor. Suction and discharge ports are located on opposite ends of hydraulic machine. EFFECT: increased pressure head; possibility of handling viscous liquids containing mechanical admixtures; enhanced reliability; simplified construction. 2 dwg