Purging device for residual liquid on the surface of cold-rolled strip steel

Abstract

The invention relates to the field of surface quality control of cold-rolled strip steel, in particular to a blowing device for residue liquid on the surfaces of the strip steel. A blowing device for the residue liquid on the edge parts of the surfaces of cold-rolled strip steel comprises a driving device, a transmission mechanism, a support frame base, a driving slide block, a driven slide block and a pair of compressed air conveying pipelines, wherein the driving device is fixedly arranged on the support frame base, the output end of the driving device is connected with the driving slide block, the driving slide block and the driven slide block are correspondingly arranged at the two ends of the support frame base and have opposite moving directions, the pair of compressed air conveying pipelines is respectively and fixedly arranged on the driving slide block and the driven slide block, a compressed air blowing nozzle assembly is arranged on each compressed air conveying pipeline, and an encoder is arranged on the transmission mechanism. The blowing device can be reliably operated in a severe environment and has the advantages that the structure is compact, the environment adaptability is high, the motive power is strong, the operation is stable, the maintenance is convenient, the maintenance cost is low, the energy consumption is low, and the like; the product quality is greatly improved.

Description

technical field [0001] The invention relates to the field of surface quality control of cold-rolled strip steel, in particular to a purging device for residual liquid on the surface of strip steel. Background technique [0002] In the cold-rolled strip rolling production process, the "water-rolling oil" mixture is often used as a rolling lubricant and coolant to play the role of cooling and lubrication. However, some liquid substances will adhere to the surface of the rolled strip, and these residual liquid substances will cause corrosion of the strip surface and spot defects on the appearance. As a result, the product cannot meet the user's requirements and affects the user's use. In order to eliminate the residual liquid substances on the surface of these strips as much as possible, compressed air blowing devices with different structures and functions are usually installed on the exit side of the rolling mill stand to blow off the residual liquid substances on the surfac...

AI Technical Summary

Problems solved by technology

However, for a long time, this fixed compressed air blowing device has not been ideal for blowing liquid substances at the edge of the strip. The main reasons are as follows:

[0003] 1. The distribution position and angle of the compressed air nozzles of the fixed purging device are relatively fixed during online production, and online adjustment cannot be realized

[0004] 2. The product specifications produced by the cold-rolling continuous production line are frequently switched online, and the fixed purging device cannot realize purging for the edge of the strip with different width specifications. Even if some production lines are equipped with a purging device for the edge of the strip, However, there are defects such as low degree of automation, low adjustment accuracy, lagging adjustment speed, inconvenient operation and maintenance, high failure rate, and high environmental requirements, which affect the effect of purging

[0005] 3. Due to the presence of roll gaps on both sides of the edge of the strip during the rolling process, a large amount of liquid is thrown out with the rotating work rolls, and the compressed air purging device installed in the frame cannot blow off the surface of the strip instantly Residual liquid on the edge

[0006] 4. Since the splashed residual liquid cannot be blown off in time, the amount and width of the residual liquid randomly formed on the edge of the strip steel are uncertain

It is difficult to adjust the purge

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