| 摘要 |
PURPOSE:To positively prevent the arching and the accumulation of the tea-leaves, and in addition, to contrive the simplification of the mechanism concerned by providing a hopper shaft, a vibration plate inserted being made freely rotatable with the hopper shaft working as the pivot of the rotation, and a worm-shaped auger which conveys tea-leaves by the motion of its twisting, all of the above-mentioned parts being housed in the tea leaves feed hopper. CONSTITUTION:By bringing in contact the periphery of the top-end part 27 of the screw-thread of an auger 24 and one end of vibration plate 14, where the auger 24 rotates, following said rotation, the end of the vibration plate 14 is pushed upward caused by the rubbing action against the rotating screw in the manner of rubbing on the periphery of the top-end 27 of the screw thread. Because of this action, the tea-leaves stored in the feed-hopper is subjected to stirring in the form of being pushed up once. As the rotation of the auger proceeds and reaches a certain point where the vibration plate 14 separates from the engagement and rubbing state does not exist with the periphery of the top-end 27 of the screw thread, tea-leaves covering the distance of approximately one pitch which is equal to a distance between two adjacent screw-threads, that is the distance to the top-end 27 of this side which follows being twisted, fall under the weight of tea-leaves. At this time, the shock of the falling tea-leaves weight applies on the vibration plate 14, resulting in that the tea-leaves which have been pushed up in the feed hopper so far are prevented from causing arching and accumulating because their falling shock are applied thereon. |
