Pickling device for a cold rolling line

Abstract

The utility model discloses a pickling device for cold rolling production line, including strip steel, in addition still including unwinding device, winding device and pickling device, the both ends of strip steel are provided with unwinding drum and winding drum respectively, and unwinding drum rotatory installation is in unwinding device, and winding drum rotatory installation is in winding device, and a plurality of pickling tanks are arranged in parallel in pickling device, and the tank cover is arranged on a plurality of pickling tanks respectively, and the first pickling spray bar and the second pickling spray bar are arranged on pickling tank and tank cover respectively, and the steel conveyance between unwinding drum and winding drum of strip steel is arranged between pickling tank and tank cover, and the spray head of first pickling spray bar and second pickling spray bar all are towards strip steel. The utility model discloses a plurality of pickling tanks are arranged in pickling device, can make strip steel to be in turn to pass every pickling tank and carry out pickling, and the surface of the rusted part can be washed away a layer every time, and after multiple washing, can carry out layer by layer stripping to the rusted part, and clean to the inside rust.

Description

Technical Field

[0001] This utility model relates to the field of steel pickling technology, specifically a pickling device for a cold rolling production line. Background Technology

[0002] During the cold rolling process, impurities such as iron oxide scale often exist on the surface of steel, which can affect the quality of cold-rolled products. Pickling is an important process for removing impurities such as iron oxide scale from the surface of steel. However, manual pickling is inefficient, so pickling equipment is needed for rapid and efficient pickling of steel strips.

[0003] In the prior art, utility model patent with patent number CN202321272583.4 discloses a pickling device for cold-rolled steel strip, including a pickling tank. The top of the pickling tank is provided with a support panel, and the support panel is provided with a winding shaft for winding the cold-rolled steel strip. A drive motor is provided between the winding shaft and the support panel. The interior of the pickling tank is provided with a pickling chamber for storing pickling solution. The interior of the pickling chamber is provided with a positioning wheel, several limiting wheels and several flat rotating wheels. The cold-rolled steel strip alternately passes through the surfaces of the limiting wheels and flat rotating wheels. One end of the cold-rolled steel strip is fixed to the positioning wheel, and the other end of the cold-rolled steel strip is fixed to the winding shaft. The outer surface of the limiting wheel is provided with a buffer sleeve. The buffer sleeve is made of elastic material, and the outer surface of the buffer sleeve is provided with several strip-shaped recesses.

[0004] The cold-rolled steel strip pickling device provided in the aforementioned patent uses a soft buffer sleeve to clean the surface of the cold-rolled steel strip when it comes into contact with it. The device works by conveying the steel through a pickling tank, immersing the rusted parts in the pickling solution, and then cleaning them through the buffer sleeve. However, the pickling solution only wets the rusted surface and has difficulty penetrating deeper, resulting in each pickling cycle only treating the outer layer of the rusted area, which requires further improvement. Utility Model Content

[0005] The purpose of this invention is to provide a pickling device for a cold rolling production line, which aims to improve the existing cold-rolled steel strip pickling device. After the strip passes through the pickling tank, the rusted parts on the strip are treated, resulting in the pickling solution only wetting the rusted surface and making it difficult to soak into the inside. Each pickling can only treat the outer layer of the rusted part.

[0006] This utility model is implemented as follows: A pickling device for a cold rolling production line includes strip steel, and further includes an uncoiling device, a winding device, and a pickling device; both ends of the strip steel are respectively provided with an uncoiling drum and a winding drum, the uncoiling drum being rotatably mounted on the uncoiling device, and the winding drum being rotatably mounted on the winding device; the pickling device has multiple pickling tanks arranged in parallel, each of the multiple pickling tanks being provided with a tank cover, and the pickling tank and the tank cover are respectively provided with a first pickling spray bar and a second pickling spray bar, the steel conveying device for the strip steel located between the uncoiling drum and the winding drum is arranged between the pickling tank and the tank cover, and the nozzles of the first pickling spray bar and the second pickling spray bar are both facing the strip steel.

[0007] Preferably, the unwinding device includes an unwinding frame, on which a first rotating cylinder is rotatably mounted, and one end of the first rotating cylinder passes through the unwinding frame and is connected to a first motor.

[0008] Preferably, it also includes a clamping device, which is slidably disposed on the unwinding frame. The clamping device has a clamping column parallel to the first rotating drum, and the clamping column abuts against the outer surface of the unwinding drum.

[0009] Preferably, the clamping device includes a slider, the side of the unwinding frame has a movable groove, the inner walls of the movable groove on both sides have symmetrical sliding grooves, the slider is slidably mounted on the sliding groove; the lower end face of the movable groove is fitted with an electric telescopic rod located below the slider, the side of the slider is provided with a clamping column, the upper end face is provided with a sliding rod, the sliding rod is slidably inserted into the frame of the unwinding frame located above the movable groove, and a spring is fitted on the sliding rod between the slider and the unwinding frame.

[0010] Preferably, the winding device includes a winding frame, on which a second rotating drum is rotatably mounted, and one end of the second rotating drum passes through the winding frame and is connected to a second motor; a reversing drum is provided on the upper left end of the winding frame of the second rotating drum, and the strip steel located between the unwinding drum and the winding drum is laid on the reversing drum.

[0011] Preferably, the pickling device includes a pickling tank body with multiple pickling tanks arranged in parallel on the pickling tank body. An installation rod is provided on the outer side of the pickling tank body corresponding to the position of the pickling tank. An installation cylinder adapted to the installation rod is provided on the side of the tank cover. The tank cover is rotatably mounted on the installation rod through the installation cylinder.

[0012] Preferably, the upper end of the pickling tank is provided with a transmission groove adapted to the strip steel along the strip steel conveying direction; rollers are provided on both sides of the transmission groove corresponding to the lower end face of the strip steel.

[0013] Preferably, it also includes a circulation pump. A circulation pump is provided on the side of the pickling tank, corresponding to the position of the pickling tank. The input end of the circulation pump is provided with an input hose, which connects to the inside of the pickling tank. The output end of the circulation pump is provided with an output hose, which connects to both the first pickling spray bar and the second pickling spray bar.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model sets up multiple pickling tanks in the pickling device, so that the strip steel can be pickled when it passes through each pickling tank in turn. Each cleaning can wash away a layer of the surface of the rusted part. After multiple cleanings, the rusted part can be peeled off layer by layer and cleaned to the inside of the rust.

[0016] 2. By setting up a pressing device, the surface of the unwinding drum can be pressed by the pressing column in the pressing device to prevent the unwound strip from loosening. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the back of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the unwinding device of this utility model;

[0020] Figure 4 This is a utility model Figure 3 Schematic diagram of the structure at point A;

[0021] Figure 5 This is a schematic diagram of the structure of the winding device of this utility model;

[0022] Figure 6 This is a front perspective view of the pickling device of this utility model;

[0023] Figure 7 This is a utility model Figure 6 Schematic diagram of the structure at point B;

[0024] Figure 8 This is a three-dimensional structural diagram of the back of the pickling device of this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the groove cover of this utility model.

[0026] In the diagram: 1. Strip steel; 101. Unwinding drum; 102. Rewinding drum; 2. Unwinding device; 201. Unwinding frame; 202. First rotating drum; 203. First motor; 204. Movable groove; 205. Slide groove; 206. Electric telescopic rod; 3. Clamping device; 301. Slider; 302. Clamping column; 303. Slide rod; 304. Spring; 4. Rewinding device; 401. Rewinding frame; 402. Second rotating drum; 403. Second motor; 404. Directional rotating drum; 5. Pickling device; 501. Pickling tank body; 502. Pickling tank; 503. Tank cover; 504. Roller; 505. First pickling spray bar; 506. Transmission groove; 507. Circulation pump; 508. Output hose; 509. Input hose; 510. Mounting rod; 511. Mounting cylinder; 512. Second pickling spray bar. Detailed implementation method:

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0029] Example 1

[0030] like Figure 1 , Figure 3 and Figure 4As shown, a pickling device for a cold rolling production line includes a strip steel 1, and also includes an unwinding device 2, a winding device 4, and a pickling device 5. Unwinding drums 101 and winding drums 102 are respectively provided at both ends of the strip steel 1. The unwinding drum 101 is rotatably mounted on the unwinding device 2. The unwinding device 2 includes an unwinding frame 201, on which a first rotating drum 202 is rotatably mounted. One end of the first rotating drum 202 passes through the unwinding frame 201 and is connected to a first motor 203. The first motor 203 can drive the first rotating drum 202 on the unwinding frame 201 to rotate, and drive the unwinding drum 101 to extend the strip steel. Additionally, a clamping device 3 is included. The clamping device 3 is slidably mounted on the unwinding frame 201. The clamping device 3 includes a clamping column 302 parallel to the first rotating drum 202, which abuts against the outer surface of the unwinding drum 101. By using the clamping device 3, the strip steel on the outer surface of the unwinding drum 101 can be clamped, preventing the unwound strip steel from loosening. The clamping device 3 includes a slider 301. A movable groove 204 is provided on the side of the unwinding frame 201. Sliding grooves 205 are symmetrically provided on the inner walls of both sides of the movable groove 204. The slider 301 is slidably mounted on the sliding groove 205. An electric telescopic rod 206 located below the slider 301 is embedded in the lower end face of the movable groove 204. A clamping column 302 is provided on the side of the slider 301, and a sliding rod 303 is provided on its upper end face. The sliding rod 303 is slidably inserted into the frame of the unwinding frame 201 located above the movable groove 204. A spring 304 is fitted between the slider 301 and the unwinding frame 201. The clamping device 3 is slidably installed in the movable groove 204 via the slider 301. At the same time, the slider 301 can be limited to slide by the slide rod 303, and the spring 304 can control the slider 301 to drive the clamping column 302 to automatically press down. By setting the electric telescopic rod 206, the slider 301 can be pushed upward by the electric telescopic rod 206, which facilitates the installation of the unwinding drum 101 on the first rotating drum 202.

[0031] like Figure 1 , Figures 4-7 and Figure 9As shown, the take-up drum 102 is rotatably mounted on the take-up device 4; the take-up device 4 includes a take-up frame 401, on which a second rotating drum 402 is rotatably mounted. One end of the second rotating drum 402 passes through the take-up frame 401 and is connected to a second motor 403; the second motor 403 can drive the second rotating drum 402 to rotate, thereby driving the take-up drum 102 to rotate and rewind the extended strip steel. A reversing drum 404 is provided at the upper left end of the take-up frame 401, and the strip steel 1 located between the unwinding drum 101 and the take-up drum 102 is laid on the reversing drum 404. By setting the reversing drum 404, the extended strip steel can be changed from a horizontal state to a direction tangential to the take-up drum 102. The pickling device 5 has multiple pickling tanks 502 arranged in parallel. By setting multiple pickling tanks 502, the extended strip steel can be cleaned by passing through multiple pickling tanks 502 in sequence. Each pickling tank 502 is equipped with a tank cover 503. A first pickling spray bar 505 and a second pickling spray bar 512 are respectively set on the pickling tank 502 and the tank cover 503. The steel conveying device for the strip steel 1 located between the unwinding drum 101 and the winding drum 102 is set between the pickling tank 502 and the tank cover 503. The nozzles of the first pickling spray bar 505 and the second pickling spray bar 512 are both facing the strip steel 1. By setting the first pickling spray bar 505 and the second pickling spray bar 512, the upper and lower surfaces of the strip steel 1 can be cleaned simultaneously. The rinsing of the first pickling spray bar 505 and the second pickling spray bar 512 can wash away the rusted surface, making it convenient to peel off the rust layer by layer.

[0032] like Figure 2 and Figures 6-9As shown, the pickling device 5 includes a pickling tank body 501, on which multiple pickling tanks 502 are arranged in parallel. Mounting rods 510 are installed on the outer side of the pickling tank body 501, corresponding to the positions of the pickling tanks 502. Mounting cylinders 511, adapted to the mounting rods 510, are provided on the side of the tank cover 503. The tank cover 503 is rotatably mounted on the mounting rods 510 via the mounting cylinders 511. Rotating the tank cover 503 onto the pickling tank body 501 facilitates opening and closing the tank cover 503. A transmission groove 506, adapted to the strip 1, is provided at the upper end of the pickling tank body 501 along the conveying direction of the strip 1. Rollers 504 are provided on both sides of the transmission groove 506, corresponding to the lower end faces of the strip 1. The transmission groove 506 facilitates the passage of the strip 1 through the pickling device 5, and the rollers 504 reduce friction between the strip 1 and the pickling device 5. In addition, a circulation pump 507 is included. The side of the pickling tank 501 is equipped with a circulation pump 507 corresponding to the position of the pickling tank 502. The input end of the circulation pump 507 is equipped with an input hose 509, which connects to the inside of the pickling tank 502. The output end of the circulation pump 507 is equipped with an output hose 508, which connects to the first pickling spray bar 505 and the second pickling spray bar 512. By setting up the circulation pump 507, the pickling liquid in the pickling tank 502 can be sprayed onto the strip steel 1.

[0033] Example 2

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, a pickling device for a cold rolling production line includes a strip steel 1, and also includes an unwinding device 2, a winding device 4, and a pickling device 5. Unwinding drums 101 and winding drums 102 are respectively provided at both ends of the strip steel 1. The unwinding drum 101 is rotatably mounted on the unwinding device 2. The unwinding device 2 includes an unwinding frame 201, on which a first rotating drum 202 is rotatably mounted. One end of the first rotating drum 202 passes through the unwinding frame 201 and is connected to a first motor 203. It also includes a clamping device 3, which is slidably mounted on the unwinding frame 201. The clamping device 3 has a clamping column 302 parallel to the first rotating drum 202, and the clamping column 302 abuts against the outer surface of the unwinding drum 101. The clamping device 3 includes a slider 301. The side of the unwinding frame 201 is provided with a movable groove 204. The inner walls of both sides of the movable groove 204 are symmetrically provided with sliding grooves 205. The slider 301 is slidably disposed on the sliding groove 205. An electric telescopic rod 206 located below the slider 301 is embedded in the lower end face of the movable groove 204. A clamping column 302 is provided on the side of the slider 301, and a sliding rod 303 is provided on the upper end face. The sliding rod 303 is slidably inserted into the frame of the unwinding frame 201 located above the movable groove 204. A spring 304 is fitted on the sliding rod 303 between the slider 301 and the unwinding frame 201.

[0035] like Figure 1 , Figures 4-7 and Figure 9 As shown, the take-up drum 102 is rotatably mounted on the take-up device 4; the take-up device 4 includes a take-up frame 401, on which a second rotating drum 402 is rotatably mounted, and one end of the second rotating drum 402 passes through the take-up frame 401 and is connected to a second motor 403; a reversing drum 404 is provided at the upper left end of the take-up frame 401 and the second rotating drum 402, and the strip steel 1 located between the unwinding drum 101 and the take-up drum 102 is laid on the reversing drum 404. The pickling device 5 has multiple pickling tanks 502 arranged in parallel. Each pickling tank 502 is equipped with a tank cover 503. A first pickling spray bar 505 and a second pickling spray bar 512 are respectively installed on the pickling tank 502 and the tank cover 503. The steel strip 1 located between the unwinding drum 101 and the winding drum 102 is conveyed between the pickling tank 502 and the tank cover 503. The nozzles of the first pickling spray bar 505 and the second pickling spray bar 512 are both facing the steel strip 1.

[0036] like Figure 2 and Figures 6-9 As shown, the pickling device 5 includes a pickling tank body 501, on which multiple pickling tanks 502 are arranged in parallel. Mounting rods 510 are installed on the outer side of the pickling tank body 501, corresponding to the positions of the pickling tanks 502. Mounting cylinders 511, adapted to the mounting rods 510, are provided on the side of the tank cover 503. The tank cover 503 is rotatably mounted on the mounting rods 510 via the mounting cylinders 511. A transmission groove 506, adapted to the strip 1, is provided at the upper end of the pickling tank body 501 along the conveying direction of the strip 1. Rollers 504 are installed on both sides of the transmission groove 506, corresponding to the positions of the lower end faces of the strip 1. Additionally, a circulation pump 507 is included. The sides of the pickling tank 501 are equipped with circulation pumps 507 at positions corresponding to those of the pickling tank 502. The input end of the circulation pump 507 is equipped with an input hose 509, which connects to the inside of the pickling tank 502. The output end of the circulation pump 507 is equipped with an output hose 508, which connects to both the first pickling spray bar 505 and the second pickling spray bar 512.

[0037] The working principle of this utility model is as follows: The unwinding drum 101 of the strip steel 1 is installed on the first rotating drum 202, and the first rotating drum 202 is driven to rotate by the first motor 203, so that the strip steel 1 is unwound and can pass through the pickling device 5 through the transmission groove 506. The circulating pump 507 can spray the pickling liquid in the pickling tank 502 onto the upper and lower surfaces of the strip steel 1 through the first pickling spray bar 505 and the second pickling spray bar 512. The pickling device 5 is provided with multiple pickling tanks 502, which can spray and peel off the rusted parts on the strip steel layer by layer, making it easy to clean. After cleaning, the strip steel 1 can be wound onto the second rotating drum 402 through the reversing drum 404, thus completing the pickling work of the strip steel 1.

[0038] In summary, by setting multiple pickling tanks 502 in the pickling device 5, the present invention can pickle the strip steel 1 as it passes through each pickling tank 502 in turn, and each cleaning can wash away a layer of the surface of the rusted part. After multiple cleanings, the rusted part can be peeled off layer by layer and cleaned to the inside of the rust. By setting the clamping device 3, the surface of the unwinding drum 101 can be clamped by the clamping column 302 in the clamping device 3 to prevent the unwound strip steel 1 from loosening.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pickling apparatus for a cold rolling production line, comprising strip steel (1), characterized in that, It also includes an unwinding device (2), a winding device (4), and a pickling device (5); the two ends of the strip (1) are respectively provided with an unwinding drum (101) and a winding drum (102), the unwinding drum (101) is rotatably mounted on the unwinding device (2), and the winding drum (102) is rotatably mounted on the winding device (4); the pickling device (5) has multiple pickling tanks (502) arranged in parallel, and the multiple pickling tanks (502) are respectively A tank cover (503) is provided. A first pickling spray bar (505) and a second pickling spray bar (512) are respectively provided on the pickling tank (502) and the tank cover (503). The steel strip (1) located between the unwinding drum (101) and the winding drum (102) is transported between the pickling tank (502) and the tank cover (503). The nozzles of the first pickling spray bar (505) and the second pickling spray bar (512) are both facing the steel strip (1).

2. The pickling device for a cold rolling production line according to claim 1, characterized in that, The unwinding device (2) includes an unwinding frame (201), on which a first rotating cylinder (202) is rotatably mounted. One end of the first rotating cylinder (202) passes through the unwinding frame (201) and is connected to a first motor (203).

3. The pickling device for a cold rolling production line according to claim 2, characterized in that, It also includes a pressing device (3), which is slidably arranged on the unwinding frame (201). The pressing device (3) is provided with a pressing column (302) parallel to the first rotating cylinder (202), and the pressing column (302) abuts against the outer surface of the unwinding cylinder (101).

4. A pickling device for a cold rolling production line according to claim 3, characterized in that, The pressing device (3) includes a slider (301), and the side of the unwinding frame (201) is provided with a movable groove (204). The inner walls of the movable groove (204) are symmetrically provided with sliding grooves (205). The slider (301) is slidably disposed on the sliding groove (205). An electric telescopic rod (206) located below the slider (301) is embedded in the lower end face of the movable groove (204). A pressing column (302) is provided on the side of the slider (301), and a sliding rod (303) is provided on the upper end face. The sliding rod (303) is slidably inserted on the frame of the unwinding frame (201) located above the movable groove (204). A spring (304) is fitted on the sliding rod (303) between the slider (301) and the unwinding frame (201).

5. A pickling device for a cold rolling production line according to claim 1, characterized in that, The winding device (4) includes a winding frame (401), on which a second rotating drum (402) is rotatably mounted. One end of the second rotating drum (402) passes through the winding frame (401) and is connected to a second motor (403). A reversing drum (404) is provided on the upper left end of the winding frame (401) of the second rotating drum (402). The strip steel (1) located between the unwinding drum (101) and the winding drum (102) is laid on the reversing drum (404).

6. A pickling device for a cold rolling production line according to claim 1, characterized in that, The pickling device (5) includes a pickling tank body (501), on which a plurality of pickling tanks (502) are arranged in parallel. On the outer side of the pickling tank body (501), there are mounting rods (510) corresponding to the positions of the pickling tanks (502). On the side of the tank cover (503), there are mounting cylinders (511) that are adapted to the mounting rods (510). The tank cover (503) is rotatably mounted on the mounting rods (510) through the mounting cylinders (511).

7. A pickling apparatus for a cold rolling production line according to claim 6, characterized in that, The upper end of the pickling tank body (501) is provided with a transmission groove (506) adapted to the strip (1) along the conveying direction of the strip (1); rollers (504) are provided on both sides of the transmission groove (506) corresponding to the positions on both sides of the lower end face of the strip (1).

8. A pickling device for a cold rolling production line according to claim 6, characterized in that, The system also includes a circulation pump (507). The sides of the pickling tank (501) are equipped with circulation pumps (507) corresponding to the positions of the pickling tank (502). The input end of the circulation pump (507) is equipped with an input hose (509), which connects to the inside of the pickling tank (502). The output end of the circulation pump (507) is equipped with an output hose (508), which connects to both the first pickling spray bar (505) and the second pickling spray bar (512).

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