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A defoaming device and method for cleaning cold-rolled strip steel

A technology of cold-rolled steel strip and defoaming device, which is applied in the direction of foam dispersion/prevention, etc., can solve the problems of high cost, damage to the tightness of steel plate and coating or coating, etc., achieves low cost, avoids quality defects, and the method is simple and easy row effect

Active Publication Date: 2016-06-29
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whichever method is used, it is very expensive, and the silicone oil will destroy the tightness of the steel plate and the coating or plating

Method used

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  • A defoaming device and method for cleaning cold-rolled strip steel
  • A defoaming device and method for cleaning cold-rolled strip steel
  • A defoaming device and method for cleaning cold-rolled strip steel

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Embodiment Construction

[0024] As can be seen from the accompanying drawings, the defoaming device for cleaning cold-rolled steel strip of the present invention consists of a foam-absorbing pump 1, a connecting pipe 3, a left-handed defoaming pipe 4, a right-handed defoaming pipe 5, a defoaming gasket 6 and a gas-liquid separator Composed of 9.

[0025] The bubble pump 1 includes a motor and a vane pump. The vane pump is designed according to the structure of a conventional centrifugal fan. One side of the vane pump is provided with a bubble pump exhaust pipe 2. The diameter of the inlet is 180mm, and the flow rate is 1978m3 / h. 3050Pa. The power of the motor is 3KW, and the speed is 2960rpm.

[0026] Connecting pipe 3 one end is big, and one end is small, and big end is square, and has a square flange 11, and small end is circular, has round flange. The left-handed defoaming pipe 4 is a cylinder with round flanges at both ends of the cylinder. A left-handed helical piece 12 is housed in the left-ha...

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PUM

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Abstract

The invention provides a defoaming device and method for cleaning cold-rolled strip steel, including a foam-absorbing pump, a connecting pipe, a left-handed defoaming pipe, a right-handed defoaming pipe, a gas-liquid separator and a defoaming gasket; Connect the exhaust pipe of the suction pump and the left-handed defoaming pipe respectively, and connect the two ends of the right-handed defoaming pipe to the left-handed defoaming pipe and the inlet pipe flange of the gas-liquid separator respectively. There are defoaming gaskets between the connecting pipe, the left-handed defoaming pipe, the right-handed defoaming pipe, and the inlet pipe flange of the gas-liquid separator. The bubbles inhaled by the bubble pump are accelerated by the blades and then discharged from the exhaust port. The high-speed bubbles pass through the connecting pipe and the defoaming gasket and then enter the left and right spiral defoaming pipes to form a mixed fluid of air, bubbles and lye. The liquid in the liquid separator is discharged through the discharge pipe under the action of gravity, and the air and remaining air bubbles are discharged through the discharge pipe. The defoaming device of the invention has low operating cost and no pollution, can eliminate most of the foams, and improves the cleaning quality of the strip steel surface.

Description

technical field [0001] The invention belongs to the field of steel rolling control devices, and in particular relates to a mechanical defoaming device and a defoaming method used in the cleaning process of cold-rolled strip steel. Background technique [0002] Cleaning is one of the essential processes in the production process of modern cold-rolled strip steel. It is used to remove residual iron powder, grease and other attachments on the surface of the strip steel, so as to improve the cleanliness of the strip steel surface and increase the adhesion of the subsequent coating process. Adhesion to avoid quality defects of iron leakage on the surface of the coated strip. [0003] Cleaning uses sodium hydroxide or sodium silicon carbonate lye as a degreasing agent, and uses spray electrolytic cleaning. However, rolling oil and alkali undergo saponification reaction, and the saponification component exceeds a certain concentration, and foaming is likely to occur. As a result, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G3/02C23G1/19B01D19/02
Inventor 刘宝权漆德虎曹威王军生侯永刚李广龙王奎越吴萌费静宋君
Owner ANGANG STEEL CO LTD
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