| 摘要 |
<p>1517634 Milking machine pulsators ALFA LAVAL AB 17 Aug 1976 [4 Sept 1975] 34294/76 Heading AIM [Also in Division G3] A milking machine pulsator has a slide 9 reciprocated by a driving pin 13 engaged in an endless helical groove 14 in a spindle 12 which is driven at a constant speed by a synchronous electric motor. In order to adjust the movement of the slide relative to the pulsation ports 7, 8 and a vacuum port 6, the spindle is adjustable longitudinally, having screw-threaded engagement with a bushing which is rotatable in the pulsator housing but fixed axially.</p> |
