Rotary piston pump, for gases, has a number of identical pistons rotating against each other in the housing to force the gas to a perforated contour plate at the outlet, which has a closure disk to block/release the outflow

摘要

The rotary piston machine, to pump gases, has a contour plate (8) with passage openings (9) at the outlet opening (3) of the housing (1). A number of axially parallel rotating pistons (5) in the housing rotate against each other, with a number of paddles and with identical profiles. The gas is within a zone (7) defined by the pistons, to be forced towards the outlet, where the plate passages are released and blocked by a closure (10) with the rotary cycles of the pistons, using a disk (11) with perforations (12) on the side towards the take-off pipe (4) and which rotates in only one direction.