| 摘要 |
In a method for controlling the level of a mixture, consisting of at least two components, of fluid material in a container with an outlet, preferably for controlling the level in the feeding hopper of an extruder, the level is detected by at least one sensing device which controls the charged quantity per unit of time of at least one component. So that the average level in the container or the feeding hopper can be maintained with the smallest possible variations despite the constant discharge of material therefrom, at least one component is supplied to the container or the feeding hopper via a metering screw which draws this component from a separate supply container, the motor of which metering screw is controlled, on the basis of the signals from the sensing device or sensing devices, in such a way that the level in the feeding hopper corresponds to the average level, or, in the event of deviations from this average level, the level is brought back again to the average level with the smallest possible changes in speed of the motor. |
