Automatic drying temperature control method for colored sand line

Abstract

The invention discloses an automatic drying temperature control method for a colored sand line. The drying process of the colored sand line is divided into four working stages, in the initial temperature rise stage, the preheating temperature rise in a cylinder of a dryer is completed with the shortest heating temperature rise time; in the initial heat preservation stage, a negative pressure environment is rapidly established, the temperature in the cylinder of the dryer is stabilized at about 100 DEG C, and feeding preparation is completed; in the feeding drying stage, the temperature in thecylinder of the dryer can be influenced due to the entry of abundant colored sand materials, the temperature setting needs to be strictly controlled in the stage, and the stabilization of a drying temperature curve is ensured; and in the material heat preservation stage, the temperature balance in the cylinder of the dryer and the negative pressure in the cylinder are established and maintained for a next batch of colored sand drying process. The temperature and the negative pressure in each stage are controlled, the temperature rise time is shortened, the stabilization of the temperature curve in the drying process is ensured, the actual drying temperature of the colored sand is ensured, the colored sand can be effectively prevented form caking and color losing, and the quality of the colored sand and the working efficiency of colored sand drying are improved.

Description

technical field [0001] The invention relates to the technical field of colored sand production, in particular to a method for controlling the automatic drying temperature of a colored sand line. Background technique [0002] Sand wall-like wall coatings are more and more popular among users because of their unique thick texture, solemn appearance, three-dimensional sense and functionality. As an important part of textured sand wall paint, colored sand plays the role of adjusting the hue, brightness and chroma of the coating, making the variety of colors of the paint infinitely varied, and is widely used in construction, paint and other industries. [0003] In the entire technological process of the colored sand line, there are processes such as metering, coloring, mixing, drying, blanking and packaging, and drying is a very important link in the entire colored sand line. After the white sand and color paste are evenly stirred in the mixer, the uniformly mixed colored sand n...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an automatic drying temperature control method for colored sand to solve the technical problems that the actual drying temperature fluctuates greatly in the existing colored sand drying method, which easily leads to agglomeration and discoloration of colored sand and low quality of colored sand

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