Gypsum slurry thickness fine regulation system and method

Abstract

The present invention provides a system and method for fine-tuning the thickness of gypsum slurry. The method includes: detecting the actual value of the slurry accumulation height in real time; taking the absolute value as the difference between the actual accumulation height of the slurry measured by the ranging sensor and a given value. Deviation value, output a control signal after performing proportional, integral and differential operations on the deviation value; output the control signal to the frequency converter connected with the small flow screw pump; adjust the frequency converter frequency through the control signal to adjust the small flow screw pump The speed of the pump controls the flow of clean water. The technical solution of the present invention is a dynamic adjustment method, the system is stable, and the control accuracy is much higher than that of the pulp pump controlled in the past, which can reach 0.5%, which improves the quality of gypsum molding, the surface density of the board is uniform, the strength is uniformly increased, and the inner quality of the finished product is guaranteed. . The adjustment of the slurry does not require the operator to track and adjust all the time, which reduces the human labor, improves the automation level of the production line, and achieves better expected results.

Description

technical field [0001] The invention relates to the technical field of electrical control, and belongs to the auxiliary system of a gypsum board factory, in particular to a system and method for fine-tuning the thickness of gypsum slurry. Background technique [0002] In the gypsum board molding process, the accumulation thickness of gypsum slurry is directly related to the quality of gypsum board molding. If the thickness of the slurry is too low, it will cause the gypsum board to be formed without material, and the edge will not be wrapped; At present, the thickness adjustment of gypsum slurry accumulation is based on the operator's naked eye observation and operating experience. If the height is too high or too low, adjust it manually in time. This operation is completely inseparable from human factors, which also increases human work. quantity. The other is to adjust the pulp thickness by automatically adjusting the pulp flow, and the range sensor measures the thicknes...

AI Technical Summary

Problems solved by technology

If the thickness of the slurry is too low, it will cause the gypsum board to be formed without material, and the edge will not be wrapped;

At present, the thickness adjustment of gypsum slurry accumulation is based on the operator's naked eye observation and operating experience. If the height is too high or too low, it should be manually adjusted in time. This operation is completely inseparable from human factors, which also increases the work of people. quantity

The other is to adjust the thickness of the slurry by automatically adjusting the flow of the pulp, and the range sensor measures the thickness to control the flow of the pulp. In this method, due to the large flow of the pulp during the batching process, the flow accuracy is difficult to control, and the fluctuation of the slurry is relatively large. Large, unstable, relatively unsatisfactory molding quality

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