Concentrated alkaline concentration online measurement and control system

Abstract

The invention discloses a concentrated alkaline concentration online measurement and control system, which comprises at least two dipping tanks, a filter box, an alkaline preparation tank, a measurement tank and a programmable logic controller, wherein a temperature measurement device and a first liquid level measurement device are installed in one dipping tank; a second liquid level measurement device is installed on the filter box, and the inlet of the filter box is communicated with the outlet of the dipping tank No.2; a third liquid level measurement device is installed in the alkaline preparation tank, the inlet of the alkaline preparation tank is communicated with the outlet of the filter box, the inlet of the alkaline preparation tank is respectively communicated with a basic material pipeline on which a concentrated alkaline control and regulating valve is assembled, a water pipeline on which a water control and regulating valve is assembled, and a first branch of a self-circulation pipeline, and a third branch is communicated with the inlet of the dipping tank No.1; and a pressure measurement device, a density measurement device and a fully-immersed sensor are installed in the measurement tank, and the measurement tank is installed in the alkaline preparation tank. The system is adopted to ensure the alkaline concentration of printing and dyeing equipment to be consistent all the time.

Description

technical field [0001] The invention relates to a detection and control system in printing and dyeing equipment, in particular to an online detection and control system of concentrated alkali concentration capable of real-time online detection and adjustment of the concentration of alkali liquid in a dipping tank. Background technique [0002] During the printing and dyeing process, the fabric needs to be immersed in the dipping tank for mercerizing treatment. Therefore, the alkali concentration in the dipping tank is a key process parameter, and it is especially important to keep it constant. The alkali concentration directly affects the fabric appearance quality, dyeing and finishing processes. Existing printing and dyeing equipment often use the alkali solution in the dipping tank to manually titrate the alkali concentration when the fabric is mercerized, and then adjust its concentration according to the process requirements. The method of manual titration cannot continu...

AI Technical Summary

Problems solved by technology

The method of manual titration cannot continuously measure the concentration of concentrated alkali in real time, and the parameters cannot be adjusted in time for the change of alkali concentration within the measurement interval, there is time lag and adjustment error, the measurement accuracy is low, and it cannot meet the requirements of continuous production; at the same time, manual titration is used. Adjusting the concentration can not realize the automation of control, increase the number of labor and labor costs, cause many defective products and waste of resources such as water, steam, and pharmaceuticals, increase the cost of sewage treatment, and affect the environment

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