Feeding pressure control method for whirlcone

The invention discloses a feeding pressure control method for a whirlcone. The feeding pressure of the whirlcone is controlled by a control method combining continuous control with logic control. The method comprises the following steps: when deviation of the feeding pressure is smaller than a set threshold, adopting continuous control, and carrying out continuous and steady adjustment on the feeding pressure, so that the deviation of the feeding pressure is close to a feeding pressure set value; when the deviation of the feeding pressure is greater than the set threshold, adopting logic control, and rapidly reducing the deviation of the feeding pressure; and once the deviation of the feeding pressure is smaller than the threshold, entering a continuous adjustment stage, and carrying out continuous and steady adjustment on the feeding pressure through a transducer, so that the deviation of the feeding pressure is close to the feeding pressure set value. According to the control method disclosed by the invention, the feeding pressure of the whirlcone is stabilized within a fluctuation range required by production, so that the indexes of 'overflow particle size' of the whirlcone are ensured.