DD264836A1 - ADJUSTMENT OF WATER OR WZ. FAT CONTENT OF BUTTER BY WATER INJECTION IN THE KNETER CONTINUOUSLY WORKING BUTTERING - Google Patents

Abstract

The method "Adjustment of the water or fat content of butter by adding water in the kneader of continuously operating butter plants" is used to determine and regulate the volume flow of electrically adjustable pumps. It can be used for all pumps whose adjustment causes the unambiguous change in an electrical quantity, in particular the voltage drop across a potentiometer, or where, for. B. the coupling of a potentiometer to the adjustment of the pump, the above conditions is realized. The control of the volume flow is carried out according to a value which is determined from the converted into a frequency electrical signal via the measurement of the pulse duration and the manual or, via a connected computer, automatic comparison with for the pump and the medium to be pumped specific calibration curves. figure

Description

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1st title of the invention

"Adjustment of the Water or Fat Content of Butter by Waεserzudosierung in Kneader Continuous Butterung3anlagen"

2, field of application of the invention

The invention relates to the determination and regulation of the volume flow of the water metering pump to microcomputer control equipped continuous butter plants. An application of the invention is possible on all computer-controlled, continuously adjustable pumps under the condition of constant flow properties (viscosity) of the medium to be pumped.

3. Characteristic of the known state of the art

A determination of the volume flow of the water metering pump at the butter plants FBFC 1/2 and FBFB 10/12 was previously either an analog display with low accuracy whose value was not processed by the control computer (WP A 01 J 2446343) or the water metering pump was complicated and materially complex thyristor control provided (WP A 01 J 2697344).

4. Object of the invention

The aim of the invention is to detect the performance of the water metering pump at microcomputer-controlled Butterungsanlagen and .in the control of only one digital input.

5. Presentation of the essence of the invention

The task is to easily determine the flow rate of a pump to display it digitally and then regulate the pump can.

According to the invention, the voltage drop is converted into a frequency via a potentiometer mechanically coupled to the adjusting device of the pump and read into the computer via a data line.

The determined by the computer oscillation period of this signal is compared with a specific for the pump and the medium to be pumped calibration curve, which is conveniently stored in the computer. The result is displayed digitally and the pump is manually or automatically controlled according to this value.

6th embodiment

One possibility of implementing the invention is the microcomputer-based buttering process. Ti'g,

Here, cream 1 prepared in the cream is conveyed via a frame pump 2 in the continuous buttering unit 4, Here he is mechanically processed with a rotating racket 3, and the resulting Butterkom transported into the kneader 5. In kneader 5, the buttercorn is kneaded into a skein. By adding water through the metering pump 7, the water or fat content of the butter came to the desired value.

Subsequently, it is packed in the packaging 6. The control of the aggregates:

Rahmpumpe 2, racket 3, kneader 5 and water metering pump 7 takes place in the evaluation of manually or automatically obtained measurements of water or fat content by the microcomputer 9. All units are electrically adjustable by servo motors. The servomotor of the water metering pump 7 is mechanically coupled to a potentiometer.

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There is a clear dependence between the voltage drop across the potentiometer and the power of the pump.

After the processing of the voltage signal by the voltage-frequency converter 8 dig digested frequency is read via an input line into the microcomputer and determines the Schwingungsdaucr there. In the microcomputer 9, the specific for the water metering pump and the voltage-frequency converter 8 dependence of the oscillation period is stored by the amount of water delivered per unit time.

On the basis of the thus determined volume flow of the metered water, the water metering pump 7 can be automatically controlled within the control with high accuracy, via a display on the butter machine 4, the value is displayed digitally.

Claims (2)

-y claims 1. A method for adjusting the water or fat content by the addition of water in the kneader to a microcomputer-controlled butter machine, characterized in that the instantaneous volume flow of the metered water from a converted into a frequency, the volume flow uniquely corresponding, electrical variable by comparison with a calibration curve determined and the Wasserzudosierung is regulated thereafter. 2. The method according to claim 1, characterized in that the comparison with a calibration curve and the regulation of the water metering pump is performed by a microcomputer 9, in which the calibration curves are stored. Here, I'll do it