System for purging exporting emulsions of cold continuous rolling mill

Abstract

The invention relates to an outlet emulsion purging system of a cold continuous rolling mill. Four sets of purging devices with air nozzles are respectively arranged at the heads and outlets of the upper and lower anti-winding guide plates of the rolling mill. The blowing device arranged at the head is arranged respectively in the wind slots opened by the upper anti-wrapping guide plate, the lower guide plate and the lower anti-wrapping guide plate head. Each set of main air duct is provided with at least 6 sub-pipes forming a certain angle with the main air duct along its length direction, and each sub-pipe forms a certain angle with the steel plate. The purging device of the present invention does not occupy the effective space and is convenient for equipment maintenance; it is close to the steel plate to ensure that the wind pressure does not attenuate; the distance to the roll is short, and it can be blown to the contact surface between the roll and the steel plate, so that the emulsion between the racks can be effectively cleaned Control, compared with the traditional blowing method, save 44% of compressed air consumption.

Description

technical field [0001] The invention belongs to the field of steel rolling auxiliary mechanical equipment, and in particular relates to a device for purging residues on the steel plate surface at the exit of a rolling mill. Background technique [0002] Thoroughly removing the residual emulsion on the surface of the finished cold-rolled strip is an important process to ensure the surface quality of the cold-rolled strip. However, for the finished product of the cold tandem rolling mill, the roll and the steel plate often have the phenomenon of emulsion being carried out at the exit of the rolling mill, especially for thick and thick material, which not only increases the burden on the cleaning unit, but also has an adverse effect on the next process. Good will directly affect the surface quality of the steel plate. The reason for the unclean cleaning is that due to the limitation of the location, the original design only installed 7 air nozzles in the middle of the upper an...

AI Technical Summary

Problems solved by technology

Its advantage is that the structure is simple, but the disadvantage is that the two pipes arranged crosswise on the upper part can only be arranged front and back, resulting in differences in the blowing effect, and blind spots are easily formed in the middle of the steel plate and cannot be blown; The compressed air is very easy to form turbulence and affect the effect

Chinese patent 962119415 discloses a "cold rolling end stand emulsion purging device", which is provided with a box with a width greater than or equal to the width of the strip above the strip. The nozzles arranged in a circular arc protruding from the direction of the frame can improve the blowing effect, but it is only limited to the upper surface of the strip, and the bottom cannot be blown.

What needs to be pointed out is that the problem is the same as the previous patent, that is, these two blowing devices can only be installed at the outlet of the frame without the upper and lower anti-winding guide plates, otherwise there is absolutely no place to install them

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