| 摘要 |
<p>Fibers or other bulk material to be conveyed into an air forming system are fed in a continuous stream at a uniform rate to the air forming system by conveying the material into an elongated weigh pan (36), weighing the pan (36), dropping the material onto a conveyor (46), and adjusting the speed of the conveyor (46) to compensate for variations in weight. After a target weight in the pan (36) is achieved, material is no longer fed into the pan (36), but the pan (36) is not dumped until the conveyor (46) has moved at least a distance equal to the length of the pan (36). The conveyor (46) is at least twice as long as the pan (36), so that two dumps of the pan (36) can be accommodated on the conveyor (46) at the same time, thereby permitting the speed of the belt (46) to be adjusted to feed the material into the air forming system at a substantially constant rate.</p> |
