Width control logic

Abstract

The invention discloses width control logic. The width control logic specifically comprises the following steps: S1, mounting control equipment and detecting the liquid pressure of a slurry box; S2, converting and generating a liquid pressure set value; S3, detecting a pipeline dilution water pressure value; S4, performing data processing on the pipeline dilution water pressure value; S5, performing frequency conversion control on the pipeline dilution water pressure value; and S6, performing control interaction between a user and a system. The invention relates to the technical field of papermaking industrial equipment. By adopting the width control logic, flow control of an original width control system can be replaced by liquid pressure detection; the stability of the difference value between the dilution water pressure and slurry box pressure is well ensured; therefore, the stability of width control is greatly improved, the purpose of automatically adjusting the dilution water pressure by establishing a water pressure detection and self-adaptive algorithm processing mechanism between the slurry box and a dilution water pump is well achieved, and the frequency conversion of thedilution water pump is adjusted.

Description

technical field [0001] The invention relates to the technical field of papermaking industrial equipment, in particular to a banner control logic. Background technique [0002] Papermaking is an important invention of the working people in ancient China. It is divided into two forms: mechanism and manual. The mechanism is carried out continuously on the paper machine. The pulp suitable for paper quality is diluted with water to a certain concentration, and it is initially dehydrated in the wire part of the paper machine. Wet paper sheets are formed, then dehydrated by pressing, and then dried into paper. Manually, a frame with bamboo screens, polyester nets or copper nets is used to copy the fibers dispersed and suspended in water into wet paper sheets, which are dehydrated by pressing. Then dry or dry into paper. The biggest difference between machine-made and hand-made paper is that because hand-made paper is beaten manually, the fibers in the pulp are well preserved, while...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a banner control logic, which solves the problem that the existing banner control system is flow control, which cannot ensure the stability of the difference between the pressure of the dilution water and the pressure of the headbox, so that the stability of the banner control is poor and cannot Realize direct detection of the liquid pressure of the headbox and the pressure of the dilution water to control the pressure value of the dilution water well, which cannot be achieved by establishing a water pressure detection and adaptive algorithm processing between the headbox and the dilution water pump Mechanism, to automatically adjust the dilution water pressure, it is impossible to adjust the frequency conversion of the dilution water pump to ensure that the dilution water pressure is always within the range of 1-1.5bar from the headbox pressure

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