| 摘要 |
A feeder 1 has a hopper 3 adapted to hold a supply of dry feed. A chamber 4 is adapted to receive feed by gravity from a lower portion of the hopper, and has a discharge outlet 100 at one axial end of the chamber. An auger 11 is mounted for rotation about an axis within said chamber. The auger is adapted as it rotates to move feed along a passage 105 to the discharge outlet. A shutter 108 is adapted to obstruct the passage and is provided within the discharge outlet. The shutter is coupled to and rotates with the auger. The discharge outlet is provided with an enlarged end portion 118. The auger is driven by an electric motor (30 figure 8). The drive system is adapted in use to cause the electric motor to rotate the auger through a discrete number of completed 360° turns such that when the auger is not rotating the passage is fully occluded by the shutter. The shutter may comprise a cylindrical wall with an opening 102 in one side. |
