| 摘要 |
FIELD: medical, agricultural and veterinary equipment. SUBSTANCE: peristaltic pump has cylindrical housing within which are positioned two hoses and shaft with spring-loaded levers. Squeezing rollers are eccentrically fixed on spring-loaded levers. First hose is engageable with two squeezing rollers to provide for continuous vacuum. Second hose has squeezable portion of length at least equal to that of squeezable portion of first hose and is squeezed by one roller to provide for discontinuous vacuum. EFFECT: increased efficiency in providing operation of pump under continuous vacuum in pulsed operating mode. 1 dwg |
