| 摘要 |
<p>A sack (11) is filled with pulverulent material, e.g. cement from a container (7) as the sack is carried around a path suspended from a filling spout (8). The weight of the filling in the sack is measured by a load cell (10) which transmits a weight signal via a damper (14) and computer unit (20) to a comparator (13) which closes a filling valve (9) when the weight of filling reaches a preset weight determined by a setting unit (12). After the sack has been filled it is immediately check weighed whilst still on the spout (8) and a feed-back unit (15) resets the setting unit (12) to compensate for any difference between the actual and desired weight of filling.</p> |
