| 摘要 |
<p>To fractionate fiber stock there is used a sieve device which can be constructed in the manner of a secondary stock pulper or fiberizer, yet contains a sieve having a hole size in a range of about 0.8 to 2.4 millimeters diameter. The fiberizer contains a rotor driven by a drive motor and equipped with arms movable around the sieve. At the side of the sieve confronting the rotor there is located a closed long fiber chamber with which merges the infeed line for a cleaned fiber stock suspension which is obtained from waste paper. At the same time a long fiber line leads out of this long fiber chamber into a long fiber vat or container. Behind the sieve there is located a short fiber chamber from which leads a short fiber line to a short fiber vat or container. In at least one of the lines there is arranged a throttle element which is actuated as a function of a signal received from a power measuring device. Actuation of the throttle element is accomplished in the sense that with increasing power consumption or requirement of the rotor the flow through the long fiber line leading from the long fiber chamber is intensified and vice versa.</p> |
