| 摘要 |
<p>In a mixing apparatus with a mixing rotor (17) and a mixing chamber (20) with exit openings (29), the rotor and chamber are relatively movable from a mixing position (FIG. 5), in which there is a clearance (43) between the rotor and the wall of the chamber, to a dispensing position (FIG. 6), in which there is no or substantially no clearance. In the mixing position the material (40,41) being mixed circulates (44) within the mixing chamber, and in the dispensing position the rotor (17), being adapted to urge the mixed material (45) towards the exit openings (29), pumps the mixed material out through the exit openings (29) in the form of pasty strands (46) or the like. Any lumps or hard additives, such as nuts or sweets (candies) that have not been sufficiently comminuted by the mixing member in cooperation with the wall of the mixing chamber, are comminuted by a set of knives (18) cooperating with an end wall (27), in which the exit openings (29) are formed, in the same manner as the knives in a meat mincer cooperates with its perforated disc. Thus, blockage of the exit openings (29) is avoided. The invention is particularly applicable to the mixing of ice cream stock in the form of hard-frozen ice cream with various additives, such as nuts, frozen fruit chunks or biscuits, the ensuing mixture being dispensed through the exit openings (29), e.g. into a cup (not shown) held by the operator.</p> |
