Cold-rolled steel strip pickling equipment

Abstract

The utility model discloses cold-rolled steel strip pickling equipment which comprises a working box, and a pickling chamber, a first cleaning chamber and a second cleaning chamber are arranged in the working box. Conveying roller sets are arranged at the two ends of the pickling chamber; symmetrical mounting plates are arranged at the upper and lower positions of the inner wall of the pickling chamber; a plurality of nozzles are arranged on the mounting plates; an acid liquor box is arranged on the outer side of the pickling chamber, and the output end of the acid liquor box communicates with the nozzle; a backflow structure is arranged on the acid liquor tank; first cleaning structures are arranged at the top and the bottom of the first cleaning chamber, and a second cleaning structure is arranged in the second cleaning chamber. According to the utility model, the reflux structure is arranged, so that the acid liquor can be recovered and recycled; and by arranging the second cleaning structure, water stains on the two faces of the steel belt can be adsorbed and removed, and the subsequent drying efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel strip processing, in particular to a cold-rolled steel strip pickling device. Background Art

[0002] The pickling process of cold-rolled steel strip is an indispensable part of the steel industry. It removes the oxide layer on the surface of the steel strip by chemical methods to provide a clean substrate for subsequent coating, plating or other surface treatment processes.

[0003] At present, the acid mist generated during the pickling of steel strip after continuous cold rolling is mostly directly pumped away and discharged. The effective pickling components in the acid mist cannot be reused, resulting in serious waste of acid liquid, which greatly increases the pickling processing cost of the steel strip. After the pickling of the steel strip is completed, the steel strip needs to be cleaned and then dried. After the steel strip is cleaned, water stains attached to it are difficult to remove, which will affect the efficiency of subsequent drying of both sides of the steel strip. Utility Model Content

[0004] The main purpose of the utility model is to provide a cold-rolled steel strip pickling device for solving the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold-rolled steel strip pickling equipment, comprising a working box, wherein a pickling chamber, a first cleaning chamber and a second cleaning chamber are arranged in the working box; conveying roller groups are arranged at both ends of the pickling chamber; symmetrical mounting plates are arranged at upper and lower positions of the inner wall of the pickling chamber, and a plurality of nozzles are arranged on the mounting plates; an acid liquid tank is arranged on the outside of the pickling chamber, and the output end of the acid liquid tank is connected to the nozzle; a reflux structure is arranged on the acid liquid tank; a first cleaning structure is arranged at the top and bottom of the first cleaning chamber, and a second cleaning structure is arranged in the second cleaning chamber.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the reflux structure includes a vacuum pump and a reflux pipe, the reflux pipe is provided with a valve, one end of the reflux pipe is connected to the pickling chamber, and the other end is connected to the acid liquid tank; a suction pipe is also provided on the top of the acid liquid tank, and a suction pump is provided on the suction pipe.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the first cleaning structure includes a water tank, the output end of the water tank is provided with a conduit, and the end of the conduit is provided with a spray head.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the second cleaning structure includes a water absorption roller group and a drying roller group, the water absorption roller group includes two symmetrically arranged water absorption rollers, and the outer circumference of the water absorption roller is covered with a water-absorbing sponge cylinder; the drying roller group includes two symmetrically arranged drying rollers, and the drying roller is provided with a diatom mud cylinder.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the water absorption roller group is in contact with the steel belt, the diatom mud cylinder is in contact with the water absorption sponge cylinder, and the water absorption roller group and the drying roller group are both rotatably mounted on the inner wall of the second cleaning chamber.

[0010] The beneficial effects of the utility model are as follows: in the utility model, by arranging a mounting plate and a nozzle, acid liquid can be sprayed on the upper and lower sides of the steel strip for pickling thereof; during the pickling process, the valve can be closed under the action of a vacuum pump, and then the acid liquid tank is evacuated to a negative pressure, so that the acid mist generated during the pickling process of the steel strip can be pumped into the acid liquid tank under the suction of the negative pressure; the water stains on both sides of the cleaned steel strip can be adsorbed by the water absorption roller group, and the water absorption roller rotates under the traction of the steel strip, and the water absorption roller drives the drying roller to rotate, so that the diatom mud cylinder on the drying roller absorbs the moisture on the water absorption sponge cylinder, so that the water absorption sponge cylinder continues to absorb water for the subsequent steel strip after drying, which is convenient for the subsequent drying of the steel strip and improves the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0012] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0015] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0017] See attached figure Figure 1 In this embodiment, a cold-rolled steel strip pickling equipment includes a work box, in which a pickling chamber 1, a first cleaning chamber 2 and a second cleaning chamber 3 are arranged; conveying roller groups 4 are arranged at both ends of the pickling chamber 1; symmetrical mounting plates 5 are arranged at the upper and lower positions of the inner wall of the pickling chamber 1, and a plurality of nozzles 50 are arranged on the mounting plate 5. By arranging symmetrical nozzles 50 in the pickling chamber 1, it can be ensured that the acid is evenly sprayed on the cold-rolled steel strip, thereby improving the pickling efficiency and the uniformity of the pickling effect; an acid liquid tank 6 is arranged on the outer side of the pickling chamber 1, and the output end of the acid liquid tank 6 is connected to the nozzle 50; a reflux structure is arranged on the acid liquid tank 6; a first cleaning structure is arranged at the top and bottom of the first cleaning chamber 2, and a second cleaning structure is arranged in the second cleaning chamber 3.

[0018] Further, the reflux structure includes a vacuum pump 61 and a reflux pipe 62, a valve 63 is provided on the reflux pipe 62, one end of the reflux pipe 62 is connected to the pickling chamber 1, and the other end is connected to the acid tank 6; a suction pipe 60 is also provided on the top of the acid tank 6, and a suction pump is provided on the suction pipe 60. Preferably, a filter screen is also provided in the acid tank 6. By providing the reflux structure, the acid can be recovered and recycled, the waste of the acid can be reduced, and the production cost can be reduced.

[0019] Furthermore, the first cleaning structure includes a water tank 7 , an output end of the water tank 7 is provided with a conduit 70 , and an end of the conduit 70 is provided with a spray head 71 .

[0020] Furthermore, the second cleaning structure includes a water absorption roller group and a drying roller group. The water absorption roller group includes two symmetrically arranged water absorption rollers 8, and the outer circumference of the water absorption roller 8 is covered with a water absorption sponge cylinder 80; the drying roller group includes two symmetrically arranged drying rollers 9, and the drying roller 9 is provided with a diatom mud cylinder 90.

[0021] The first cleaning chamber 2 is cleaned by a spray head 71, and the second cleaning chamber 3 is cleaned and dried by a water absorption roller group and a drying roller group, so as to effectively remove the residues after pickling and improve the cleanliness of the steel strip.

[0022] Furthermore, the water absorption roller group is in contact with the steel belt, the diatom mud cylinder 90 is in contact with the water absorption sponge cylinder 80 , and the water absorption roller group and the drying roller group are both rotatably mounted on the inner wall of the second cleaning chamber 3 .

[0023] Working principle: In the utility model, by setting the mounting plate 5 and the nozzle 50, the acid liquid can be sprayed on the upper and lower sides of the steel strip for pickling; during the pickling process, the valve 63 can be closed under the action of the vacuum pump 61, and then the acid tank 6 is evacuated to a negative pressure, so that the acid mist generated during the pickling process of the steel strip can be pumped into the acid tank 6 under the suction of the negative pressure; the water stains on both sides of the cleaned steel strip can be adsorbed by the water absorption roller group, and the water absorption roller 8 rotates under the traction of the steel strip, and the water absorption roller 8 drives the drying roller 9 to rotate, so that the diatom mud cylinder 90 on the drying roller 9 absorbs the moisture on the water absorption sponge cylinder 80, so that the water absorption sponge cylinder 80 continues to absorb water from the subsequent steel strip after drying, which is convenient for the subsequent drying of the steel strip and improves the drying efficiency.

[0024] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold-rolled steel strip pickling equipment, characterized in that: It comprises a working box, wherein a pickling chamber, a first cleaning chamber and a second cleaning chamber are arranged in the working box; conveying roller groups are arranged at both ends of the pickling chamber; symmetrical mounting plates are arranged at the upper and lower positions of the inner wall of the pickling chamber, and a plurality of nozzles are arranged on the mounting plates; an acid liquid tank is arranged on the outer side of the pickling chamber, and the output end of the acid liquid tank is connected with the nozzle; a reflux structure is arranged on the acid liquid tank; a first cleaning structure is arranged at the top and bottom of the first cleaning chamber, and a second cleaning structure is arranged in the second cleaning chamber.

2. A cold-rolled steel strip pickling equipment according to claim 1, characterized in that: The reflux structure includes a vacuum pump and a reflux pipe, a valve is provided on the reflux pipe, one end of the reflux pipe is connected to the pickling chamber, and the other end is connected to the acid liquid tank; a suction pipe is also provided on the top of the acid liquid tank, and a suction pump is provided on the suction pipe.

3. A cold-rolled steel strip pickling equipment according to claim 2, characterized in that: The first cleaning structure comprises a water tank, an output end of the water tank is provided with a conduit, and an end of the conduit is provided with a spray head.

4. A cold-rolled steel strip pickling equipment according to claim 3, characterized in that: The second cleaning structure includes a water absorption roller group and a drying roller group. The water absorption roller group includes two symmetrically arranged water absorption rollers, and the outer circumference of the water absorption roller is covered with a water absorption sponge cylinder; the drying roller group includes two symmetrically arranged drying rollers, and the drying rollers are provided with a diatom mud cylinder.

5. A cold-rolled steel strip pickling equipment according to claim 4, characterized in that: The water absorption roller group is in contact with the steel belt, the diatom mud cylinder is in contact with the water absorption sponge cylinder, and the water absorption roller group and the drying roller group are both rotatably mounted on the inner wall of the second cleaning chamber.

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