SUCTION APPARATUS Russian patent published in 1994 - IPC

FIELD: cleaning. SUBSTANCE: apparatus is made of piping shell with longitudinal tangential passage. Two swirlers are oppositely mounted on sides of the shell. At least one of the swirlers is made of a swirl ejector coupled with a source of fluid. Outlet branch pipe of the ejector is in communication with inlet branch pipe of opposite swirlier via a check pipe. The check pipe line can be provided with a branch pipe through which a given part of working mixture and passive fluid is discharged to atmosphere. Dust separator provided with a hose filter can be mounted coaxially to the shell at the outlet of the swirl ejector. Rarefication occurs within the shell when fluid is supplied to space of the swirl ejector. This determines suction of the free air. The swirler which is opposite to the ejector maintains a vortex within the shell and provides conversion of screw vortex flux of free air (inside the shell) to flat vortex flux in a chamber of the ejector. Thus suction of free air through tangential longitudinal opening of the shell is intensified. EFFECT: expanded technological capabilities. 4 cl, 13 dwg