Vacuum roller device for removing emulsion in cold rolling

Abstract

The utility model discloses a vacuum roller device for removing emulsion in cold rolling, which is mounted at an outlet of a rolling mill and positioned on the rear side of a blowing air knife, and comprises a vacuum oil removal roller positioned above a steel coil and used for removing residual rolling oil on the surface of the steel coil, an adsorption pipeline connected with a vacuum pump is arranged in the adsorption roller body and is used for vacuumizing the adsorption roller body; one end of the adsorption roller body located at the inclined low position is connected with an emulsion system through an oil return pipeline and is used for recycling emulsion; according to the utility model, the effect that manual purging is replaced by a machine is realized, the nonstandard manual purging action is avoided, the downtime is reduced, and the overall working efficiency of the rolling mill is improved; and meanwhile, the device is simple in structure, low in operation cost, very convenient to operate and suitable for being used as an effective tool for removing sputtered and dripped rolling oil on the surface of a rolled steel coil before the steel coil is discharged from a rack.

Description

Technical Field

[0001] The utility model belongs to the field of cold rolling strip steel production line equipment, and particularly relates to a vacuum roll device for removing emulsion in cold rolling. Background Art

[0002] In the process of strip steel cold rolling, emulsion, as a medium for rolling lubrication and cooling, plays a very important role. And whether the emulsion can be fully blown off the strip steel surface during the rolling process has a great impact on the quality of the strip steel surface after rolling. Specifically, in the prior art, a blowing air knife device is usually set behind the ray protection cover to blow the emulsion on the strip steel surface. However, it is found in actual production that the splashing and dripping phenomena are more serious behind the air knife, the surface of the strip steel cannot be blown clean, and it is easy to cause comprehensive emulsion stain defects. In order to improve this defect, manual blowing is usually required in the last pass of the rolling mill to control the generation of core oil coke. This improvement method not only reduces the production efficiency, is time-consuming and laborious, but also has uncertainty in controlling core oil coke.

[0003] Therefore, the applicant urgently needs to seek technical solutions to solve the above technical problems. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a vacuum roll device for removing emulsion in cold rolling, which realizes the effect of replacing manual blowing with a machine, avoids the non-standardization of manual blowing actions and reduces the downtime, and improves the overall working efficiency of the rolling mill; at the same time, it has a simple structure, low operating cost and is very easy to operate, and is suitable as an effective tool for removing the sputtering and dripping rolling oil on the surface of the steel coil before leaving the rolling mill after rolling.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A vacuum roll device for removing emulsion in cold rolling is installed at the outlet of the rolling mill and behind the blowing air knife, and includes a vacuum oil removal roll located above the steel coil and used for removing the residual rolling oil on the surface of the steel coil. Among them, the vacuum oil removal roll includes an adsorption roll body in a hollow and inclined flared shape, and an adsorption pipeline connected to a vacuum pump is arranged inside the adsorption roll body for evacuating the adsorption roll body; and one end of the adsorption roll body at the inclined lower part is connected to the emulsion system through an oil return pipeline for realizing the recycling of the emulsion.

[0007] Preferably, the adsorption roll body is made of stainless steel, and a number of adsorption holes are arranged on the adsorption roll body at intervals; among them, a woven fiber layer is arranged on the outer periphery of the adsorption roll body for strongly adsorbing the residual emulsion on the surface of the steel coil.

[0008] Preferably, a row of adsorption holes is arranged on the adsorption roller body every 29 - 31° along the circumferential direction, wherein the length range of a single row of adsorption holes is 1500 - 1600 mm, and the interval between adjacent adsorption holes is 9 - 11 mm; the aperture of each adsorption hole is 7 - 9 mm.

[0009] Preferably, the thickness of the adsorption roller body is 14 - 16 mm, and the thickness of the woven fabric fiber layer is 15 - 20 mm.

[0010] Preferably, a lower auxiliary adsorption roller is arranged outside the vacuum degreasing roller and below the steel coil; an upper auxiliary adsorption roller is arranged outside the vacuum degreasing roller and above the steel coil; wherein, the lower auxiliary adsorption roller is located between the vacuum degreasing roller and the upper auxiliary adsorption roller; the vacuum degreasing roller, the lower auxiliary adsorption roller and the upper auxiliary adsorption roller form a tensioned angle relative to the steel coil for removing the oil on the surface of the steel coil.

[0011] Preferably, the upper auxiliary adsorption roller and the lower auxiliary adsorption roller have the same structure, wherein the upper auxiliary adsorption roller adopts a hollow structure, and a woven fabric fiber layer is arranged on its outer periphery.

[0012] Preferably, the thickness of the upper auxiliary adsorption roller is 11 - 15 mm, and the thickness of the woven fabric fiber layer is 20 - 30 mm.

[0013] Preferably, the upper auxiliary adsorption roller is movably mounted on the upper auxiliary roller bracket up and down through a cylinder, wherein when the production is in operation, the upper auxiliary adsorption roller is pressed down on the upper surface of the steel coil through the cylinder, and when there is no production, the upper auxiliary adsorption roller is lifted up through the cylinder.

[0014] Preferably, both the adsorption pipeline and the oil return pipeline are made of stainless steel pipes, and their inner diameters are not less than 1 / 2 inch.

[0015] In this application, by adding a vacuum roller device on the outlet side of the rolling mill to further remove the emulsion on the surface of the steel coil after passing through the purge air knife on the outlet side of the rolling mill, it is ensured that there is no excessive residue of the emulsion on the surface of the steel coil, and a small amount of the residual part can be evenly distributed on the surface of the steel coil, avoiding the abnormality that excessive emulsion remains locally on the surface of the steel coil and is likely to form emulsion; through this simple and low-cost structure, the efficient and convenient cleaning of the residual emulsion on the surface of the steel coil is realized, the surface of the steel coil is cleaned, it is suitable as an emulsion cleaning tool and can be used as an automated tool to replace manual purging, realizing the rapid cleaning of the excessive residual emulsion on the surface of the steel coil and saving a large amount of production time.

[0016] The present application further proposes the structural settings of the lower auxiliary adsorption roller and the upper auxiliary adsorption roller. In actual production, they cooperate with the vacuum degreasing roller to form an angle with the steel coil, so as to ensure that a certain pressure is formed between the vacuum degreasing roller and the steel coil in actual production to ensure the smooth progress of the degreasing action; at the same time, it itself has a degreasing function, which can further adsorb the emulsion on the surface of the steel coil, avoid the formation of emulsion spots on the steel coil, and ensure that there is no residue of emulsion spots on the surface of the steel coil. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a vacuum roller device for cold rolling emulsion removal in a specific embodiment of the present invention;

[0018] Figure 2 is a schematic side view of a vacuum roller device for cold rolling emulsion removal in a specific embodiment of the present invention. Detailed Embodiment

[0019] An embodiment of the present invention discloses a vacuum roller device for cold rolling emulsion removal, which is installed at the outlet of a rolling mill and behind a purging air knife. It includes a vacuum degreasing roller located above the steel coil and used to remove residual rolling oil on the surface of the steel coil. Among them, the vacuum degreasing roller includes an adsorption roller body in a hollow and inclined flared shape. An adsorption pipeline connected to a vacuum pump is arranged inside the adsorption roller body for evacuating the adsorption roller body; and one end of the adsorption roller body at the inclined lower position is connected to an emulsion system through an oil return pipeline for realizing the recycling of the emulsion.

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1 and Figure 2 As shown, a vacuum roller device for cold rolling emulsion removal is installed at the outlet of a rolling mill and behind a purging air knife. It includes a vacuum degreasing roller 2 located above the steel coil 1 and used to remove residual rolling oil on the surface of the steel coil 1. Among them, the vacuum degreasing roller 2 includes an adsorption roller body in a hollow and inclined flared shape. An adsorption pipeline connected to a vacuum pump (in actual production, the pressure range of the vacuum pump can be set at (3 - 5) * 10 -6An adsorption pipeline connected to a pressure range of Pa is used to evacuate the adsorption roller body; and one end of the adsorption roller body located at the lower inclined position (in actual production, the emulsion adsorbed into the inside of the vacuum degreasing roller 2 will automatically flow out to one end of the adsorption roller body located at this lower inclined position) is connected to the emulsion system through an oil return pipeline to realize the recycling of the emulsion; in actual production implementation, after the emulsion on the surface of the steel coil 1 has been basically blown clean by the blowing air knife of the rolling mill itself, the emulsion dripping from the inside of the rolling mill and the emulsion sputtered after blowing will continue to drip onto the surface of the steel coil 1. At this time, through this embodiment, a further cleaning action of the surface of the steel coil 1 can be performed to clean the residual emulsion on the surface;

[0022] Preferably, in this embodiment, the adsorption roller body is made of stainless steel (specifically, SUS316 stainless steel is selected in this embodiment), and a number of adsorption holes are arranged on the adsorption roller body at intervals; among them, a woven fiber layer is provided on the outer circumference of the adsorption roller body for strongly adsorbing the residual emulsion on the surface of the steel coil 1; further preferably, in this embodiment, a row of adsorption holes is arranged every 30° along the circumferential direction of the adsorption roller body. Among them, the length of a single row of adsorption holes is 1570 mm, and the interval between its adjacent adsorption holes is 9 - 11 mm (specifically, 10 mm is selected in this embodiment); the aperture of each adsorption hole is 7 - 9 mm (specifically, 8 mm is selected in this embodiment); preferably, in this embodiment, the thickness of the adsorption roller body is 14 - 16 mm (specifically, a sleeve with a thickness of 15 mm is selected), and the thickness of the woven fiber layer is 18 mm;

[0023] Preferably, in this embodiment, a lower auxiliary adsorption roller 3b is arranged outside the vacuum degreasing roller 2 and below the steel coil 1; an upper auxiliary adsorption roller 3a is arranged outside the vacuum degreasing roller 2 and above the steel coil 1; among them, the lower auxiliary adsorption roller 3b is located between the vacuum degreasing roller 2 and the upper auxiliary adsorption roller 3a; the vacuum degreasing roller 2, the lower auxiliary adsorption roller 3b and the upper auxiliary adsorption roller 3a form a tensioned angle relative to the steel coil 1 for removing the oil on the surface of the steel coil 1.

[0024] Preferably, in this embodiment, the upper auxiliary adsorption roller 3a and the lower auxiliary adsorption roller 3b have the same structure (they can be used interchangeably as spare parts, reducing the spare part cost). Among them, the upper auxiliary adsorption roller 3a adopts a hollow structure, and a woven fiber layer is provided on its outer circumference, specifically made of SUS316 stainless steel;

[0025] It should be noted that the woven fiber layer involved in this application can utilize the adsorption ability of the fiber, and its function is to evenly distribute the emulsion on the surface of the steel coil 1 so as not to form an emulsion concentration and cause the formation of emulsion spots;

[0026] Preferably, in this embodiment, the thickness of the upper auxiliary adsorption roller 3a is 11-15 mm (13 mm is selected in this example), and the thickness of the woven fabric fiber layer is 20-30 mm (23 mm is selected in this example);

[0027] Preferably, in this embodiment, the upper auxiliary adsorption roller 3a is movably mounted on the upper auxiliary roller bracket 31 through a cylinder. When in production operation, the upper auxiliary adsorption roller 3a is pressed down on the upper surface of the steel coil 1 through the cylinder. When there is no production, the upper auxiliary adsorption roller 3a is lifted up through the cylinder;

[0028] Preferably, in this embodiment, both the adsorption pipeline and the oil return pipeline are made of stainless steel pipes (specifically, SUS316 stainless steel material), and their inner diameters are not less than 1 / 2 inch; Further preferably, in this embodiment, the adsorption pipeline is made of a 1-inch SUS316 stainless steel seamless pipeline formed by bending and welding to ensure no leakage on the side wall; the oil return pipeline is made of a 1.5-inch SUS316 stainless steel seamless pipeline formed by bending and connecting with 90-degree elbows, etc., to ensure good oil return effect;

[0029] It should be further noted that the main structure of this application is made of SUS316 stainless steel, and its rust prevention performance is excellent, which can ensure that no rust will occur and the overall device will not rust.

[0030] In this embodiment, a vacuum roller device is added on the outlet side of the rolling mill to further remove the emulsion on the surface of the steel coil 1 after passing through the purge air knife on the outlet side of the rolling mill, ensuring that there is no excessive residue of the emulsion on the surface of the steel coil 1, and a small amount of the remaining part can be evenly distributed on the surface of the steel coil 1, avoiding the abnormality of the emulsion being easily formed on the surface of the steel coil 1 due to excessive local residue of the emulsion on the surface of the steel coil 1; Through this simple and low-cost structure, the efficient and convenient cleaning of the residual emulsion on the surface of the steel coil 1 is realized, the surface of the steel coil 1 is cleaned, which is suitable as an emulsion cleaning tool and can be used as an automated tool to replace manual purging, realizing the rapid cleaning of the excessive residual emulsion on the surface of the steel coil 1 and saving a large amount of production time; This embodiment also proposes the structural settings of the lower auxiliary adsorption roller 3b and the upper auxiliary adsorption roller 3a, which form an angle with the steel coil 1 in cooperation with the vacuum oil removal roller 2 during actual production, so as to ensure that a certain pressure is formed between the vacuum oil removal roller 2 and the steel coil 1 during actual production to ensure the smooth progress of the oil removal action; At the same time, it itself has an oil removal function and can further adsorb the emulsion on the surface of the steel coil 1 to avoid the formation of emulsion spots on the steel coil 1 and ensure that there is no residual emulsion spot on the surface of the steel coil 1.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum roller device for cold rolling demulsification, installed at the outlet of the rolling mill and located behind the purge air knife, characterized in that: It includes a vacuum degreasing roller located above the steel coil and used for removing residual rolling oil on the surface of the steel coil, wherein the vacuum degreasing roller includes a hollow, inclined bell-shaped adsorption roller body, an adsorption pipeline connected to a vacuum pump is provided inside the adsorption roller body, and is used for vacuuming the adsorption roller body; and one end of the adsorption roller body located at a low inclination is connected to the emulsion system through an oil return pipeline, so as to realize the recycling of the emulsion.

2. The vacuum roller device for cold rolling demulsification according to claim 1, characterized in that: The adsorption roller body is made of stainless steel and is provided with a plurality of adsorption holes distributed at intervals; wherein, a woven fiber layer is provided on the periphery of the adsorption roller body for strongly adsorbing the emulsion remaining on the surface of the steel coil.

3. The vacuum roller device for cold rolling demulsification according to claim 2, characterized in that: The adsorption roller body is provided with a row of adsorption holes every 29-31 degrees along the circumferential direction, wherein the length range of a single row of adsorption holes is 1500-1600 mm, and the interval between adjacent adsorption holes is 9-11 mm; the aperture of each adsorption hole is 7-9 mm.

4. The vacuum roller device for cold rolling demulsification according to claim 2, characterized in that: The thickness of the adsorption roller body is 14-16 mm, and the thickness of the woven fiber layer is 15-20 mm.

5. The vacuum roller device for cold rolling demulsification according to claim 1, characterized in that: A lower auxiliary adsorption roller is arranged on the outer side of the vacuum degreasing roller and below the steel coil; an upper auxiliary adsorption roller is arranged on the outer side of the vacuum degreasing roller and above the steel coil; wherein the lower auxiliary adsorption roller is located between the vacuum degreasing roller and the upper auxiliary adsorption roller; the vacuum degreasing roller, the lower auxiliary adsorption roller and the upper auxiliary adsorption roller form an angle with tension relative to the steel coil, so as to remove oil on the surface of the steel coil.

6. The vacuum roller device for cold rolling demulsification according to claim 5, characterized in that: The upper auxiliary adsorption roller and the lower auxiliary adsorption roller have the same structure, wherein the upper auxiliary adsorption roller adopts a hollow structure and a woven fiber layer is arranged on its periphery.

7. The vacuum roller device for cold rolling demulsification according to claim 6, characterized in that: The thickness of the upper auxiliary adsorption roller is 11-15 mm, and the thickness of the woven fiber layer is 20-30 mm.

8. The vacuum roller device for cold rolling demulsification according to claim 5, characterized in that: The upper auxiliary adsorption roller is installed on the upper auxiliary roller bracket so as to be movable up and down by means of a cylinder, wherein when production is in progress, the upper auxiliary adsorption roller is pressed down on the upper surface of the steel coil by the cylinder, and when there is no production, the upper auxiliary adsorption roller is lifted up by the cylinder.

9. The vacuum roller device for cold rolling demulsification according to claim 1, characterized in that: The adsorption pipeline and the oil return pipeline are both made of stainless steel pipes, and their inner diameters are not less than 1 / 2 inch.

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