Integrated-type acid-washing unit

Abstract

The invention provides an integrated-type acid-washing unit. The integrated-type acid-washing unit comprises a groove body with an interior which is divided into an upper layer and a lower layer by a clapboard, squeezing rolls, a maintenance room, a circulating pump and a heater, wherein the upper layer of the groove body forms an acid-washing groove by the clapboard, and an acid liquid recovery groove is formed below the clapboard; at least two squeezing rolls are arranged and horizontally placed at one end of the clapboard up and down respectively, and the space between the two rolls is not lower than the end part of the clapboard; the lowest part of the acid-washing groove is conducted with the acid liquid recovery groove; the circulating pump is conducted with the acid liquid recovery groove or the maintenance room, and connected with the heater, and the output pipeline of the heater is conducted with the acid-washing groove; and the maintenance room is communicated with the acid liquid recovery groove, the maintenance room and the acid-washing groove are provided with detachable sealing upper covers, and the maintenance room or the acid liquid recovery groove is further conducted with a liquid drainage pipeline. The integrated-type acid-washing unit provided by the invention can be used for performing multi-concentration stepped acid-washing, thus saving the cost of an acid-washing liquid, ensuring the quality of the acid-washing, reducing the floor area of equipment and the workload of foundation construction, reducing production cost, and contributing to maintenance.

Description

technical field [0001] The invention relates to the field of steel processing, in particular to an integrated pickling unit. Background technique [0002] Metals such as steel need to be pretreated when they are used. Among them, in order to remove the oxidized skin on the metal surface, the pretreatment process of pickling the steel is required. [0003] In the pickling process, in order to improve the pickling effect, speed up the reaction efficiency and shorten the reaction time, the pickling solution needs to be heated. The existing pickling equipment mainly includes a pickling tank and an acid recovery tank. In order to realize that the pickling solution can be completely discharged into the acid recovery tank when the pickling tank is emptied, the pickling tank and the acid recovery tank must have certain The height difference, so the pickling tank is set on the foundation, and the acid recovery tank should be placed in the ditch below the ground on the side of the pi...

AI Technical Summary

Problems solved by technology

[0004] 1. The pickling tank and the acid recovery tank are arranged side by side separately, which occupies too much area and the cost of land occupation is too high, which is not suitable for the current social reality where every inch of land is expensive.

[0005] 2. The pickling tank is set on the foundation, and the acid recovery tank is set in the trench. The amount of infrastructure construction is large, the construction period is long, and the cost is high

[0006] 3. The separate pickling tank and acid recovery tank lead to long and complicated pipeline laying between them, which increases the probability of pipeline safety accidents

[0007] 4. Since the pickling tank is generally composed of multiple sections, each section corresponds to several acid recovery tanks, resulting in troublesome inspection and maintenance of acid recovery tanks

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