HIGH-PRESSURE TWO-STAGE METERING PUMP Russian patent published in 1997 - IPC

FIELD: manufacture of pumps. SUBSTANCE: each stage of pump is connected in series and is made in form of plunger connected with eccentric and mounted in housing forming the working chamber. Tank is connected with inlet line of housing. Dividers are mounted in working chambers are connected with inlet line. Adjustable stop is mounted in housing on side of first stage for engagement with end surface of divider. Tank is connected with compressed gas source. Plungers are mounted coaxially on both sides from eccentric providing for operation of stage in counter-phase. EFFECT: enhanced reliability. 1 dwg