| 摘要 |
<p>A pump device for a viscous fluid, comprising a unit provided with entry and exit mouths for the fluid, and relative fixed and rotating parts for moving the fluid within it, the unit consisting of a pair (14,15) of mutually facing plate elements, of which a first (14) rotates with the drive shaft of the device and the second (15) is fixed with respect to the first plate element, the second plate element having a central through hole to be mounted on the shaft and being provided on that lateral surface facing the first plate element with a helical recess which is eccentric to the hole for the shaft (11) and has its ends in the form of a first entry mouth (21) facing the bottom of the plate element and a second mouth (22) radially facing the central hole, between the central hole of the second plate element and the rotating shaft (11) there being provided a sleeve (23) element which is fixed to the second plate element (15) and is provided with at least one passageway (25) which at one end faces the second mouth (22) of the second plate element (15) and at the other end faces the outlet of the device. <IMAGE></p> |
