SU370312A1 - METHOD OF REGULATING THE PERFORMANCE OF DEFIBRATOR - Google Patents

Description

one

There is a known method for adjusting the ipousi of the defibrator through the use of a rotation speed of the auger auger and noMouui control unit acting on the speed of rotation of the auger motor.

The purpose of the invention is to improve the control accuracy with a stable grinding quality.

This is achieved by introducing impulses to the main control unit of the main engine of the defibrator, the flow rate of water pressed by the screw auger, and the flow of dilution water.

The drawing shows the technological scheme of production of the defibratory mass, consisting of the control unit 1, the mass concentration controller 2, the diluent water flow meter 3, the pressed water flow meter 4, the chemical mill operating solution flow regulator 5, the feeder screw auger 6, and the hydraulic engineer 7 , receiving chamber 8 of the defibrator and steam chamber 9.

The chips entering the receiving chamber 8 of the defibrator are compressed and pushed with a jaw of the chip into the steaming chamber 9. Most of the water contained in the chips is squeezed out. The amount of water squeezed out is ir dependent on the performance of the defibrator, provided that the moisture content of the chip is immeasurable.

2

The flow of the pressed water out of the flow meter 4, and the impulse from it stays on the correction unit / as the enabling sigal. From the steam curing chamber 9, the chips are passed to the grinding discs (not shown in the drawing), converted into mass, and then the secondary grinding apparatus or into the mixing basin goes.

Before entering the secondary grinding, the mass is diluted and cooled with water. The mass concentration is maintained by the control center controller at a predetermined level by controlling the flow rate of the dilution water. The flow rate of the dilution water is measured by the flow meter 3, the pulse from which is supplied as a permitting signal to the control unit and to the setter of the flow regulator of the working solution of chemicals. The flow rate of the chemical working solution is controlled by the flow controller 5. The amount of the supplied solution is maintained at a predetermined ratio to the output of absolutely dry fiber and is determined by the magnitude of the impulse received from the dilution water meter.

If there is a supply of power 1 on the main engine and at least one of the allowed signals from the pressed water meter or the dilution water meter, the coring unit acts on the rotation speed of the auger motor. In the absence of permissive signals, the control unit switches the rotation speed of the intatel auger motor to reduce the number of revolutions to the established minimum. At low speeds of the auger screw, the plug is pushed through and the defibrator starts to work normally.

Thus, the control system maintains the maximum allowable load on the main motor of the defibrator and immediately eliminates the difficulties encountered.

When the defibrator's iron productivity changes, the mass concentration regulator continuously maintains the specified mass concentration, and the flowmeter of the dilution water, in addition to supplying an enable signal to the control unit, sets the regulator setpoint

solution consumption of chemicals, ensuring high accuracy in maintaining the ratio of the amount of chemicals to the amount of absolute dry fiber.

Subject invention

The method of controlling the performance of the defibrator and changing the speed of the auger auger using a control unit acting on the motor of the auger auger, characterized in that, in order to increase the control accuracy with stable grinding quality, additional pulses are applied to the control unit , the flow rate of water pressed by the feeder screw, and the flow rate of dilution water.

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