FIELD: machine building.
SUBSTANCE: invention relates to pulsating devices for machine building and can be used, in particular, as element of alternating milking units in agro-industry. Multiplicative spool pulsator includes fixed stator 3 provided with n uniformly distributed in circumferential direction windows 4, and sliding on it rotor 1. Rotor 1 contains gaseous medium under excessive pressure and is equipped with evenly distributed in circumferential direction windows 2 for direct or reverse pulsation. Total angular magnitude of windows 2 and 4 of rotor 1 and stator 3 satisfy certain conditions for direct and reverse pulsations, respectively.
EFFECT: invention is aimed at providing multiple reduction of rotor rpm due to the fact that complete cycle of pressure or vacuum pulsations at stator windows is performed during time of incomplete rotation of rotor, and only during very small turn of rotor.
3 cl, 23 dwg
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