Continuous galvanizing equipment with zinc liquid separation function

Abstract

The utility model relates to continuous galvanizing equipment with a zinc liquid separation function, which belongs to the field of galvanizing equipment and comprises a separator arranged on the outer side of a galvanizing equipment body, and a separation mechanism comprises a support frame and a separation box. According to the continuous galvanizing equipment with the zinc liquid separation function, redundant zinc liquid on the surface of a plate is separated in time, the situation that zinc coatings are different in thickness due to residual solidification of the zinc liquid is avoided, the uniformity of the zinc coatings is ensured, the production speed is increased through the automatic zinc liquid separation process of the continuous galvanizing equipment, and the overall production efficiency is improved; meanwhile, the waste of zinc materials is reduced and the production cost is reduced by separating and recycling redundant zinc liquid, the separated zinc liquid can be filtered by the backflow assembly and flows back into the galvanizing tank again, the cyclic utilization of the zinc liquid is realized, the zinc liquid on the surface of the plate can be more effectively removed through accurate blowing of the air knife nozzle, and the production efficiency is improved. The zinc layer is prevented from being too thick or uneven, and the quality of a final product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of galvanizing equipment, in particular to continuous galvanizing equipment with a zinc liquid separation function. Background Art

[0002] Continuous galvanizing equipment is an automated production line used to coat a layer of zinc on the surface of continuously running strip steel or plates to improve their corrosion resistance. The commonly used galvanizing method is hot-dip galvanizing, including a sinking roller device and a galvanizing tank. The sheet is hot-dip plated through the zinc liquid in the galvanizing tank.

[0003] When the sheet enters the galvanizing tank for hot-dip galvanizing without separating the excess zinc liquid in time, the uniformity of the zinc layer thickness of the sheet may be affected. This is because after the sheet is immersed in the zinc liquid and a zinc layer is formed, some zinc liquid will remain on its surface. If it is not cleaned in time, the residual zinc liquid may solidify on the sheet, resulting in uneven thickness of the zinc coating of the sheet. Therefore, a continuous galvanizing equipment with zinc liquid separation function is proposed to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a continuous galvanizing equipment with a zinc liquid separation function, which has the advantages of good zinc liquid cleaning and separation effect, and solves the problem that after the sheet is immersed in zinc liquid and a zinc layer is formed, some zinc liquid will remain on its surface. If it is not cleaned in time, the residual zinc liquid may solidify on the sheet, resulting in uneven thickness of the zinc plating layer of the sheet.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous galvanizing equipment with zinc liquid separation function, comprising a separation mechanism arranged outside the galvanizing equipment body;

[0006] The separation mechanism includes a support frame and a separation box, wherein the support frame is arranged on the outside of the galvanizing equipment body, and the separation box is connected to the upper surface of the support frame to collect and separate excess zinc liquid, a connecting frame is arranged on the back wall of the inner cavity of the separation box, and air knife nozzles are inclinedly arranged on the upper and lower sides of the left side of the connecting frame to introduce compressed air to form an air knife to blow away excess zinc liquid on the surface of the galvanized sheet, a shunt pipe is connected between the two air knife nozzles, and a reflux component is arranged inside the separation box to filter the separated zinc liquid and reflux it into the galvanizing equipment body;

[0007] The reflux assembly includes a collecting hood, which is arranged inside the separation box and below the connecting frame to collect the separated galvanizing liquid. The inner bottom wall of the collecting hood is connected with a reflux pipe, and the bottom end of the reflux pipe passes through and extends to the inside of the galvanizing equipment body to return the separated galvanizing liquid to the galvanizing equipment body. A filter plate is horizontally arranged inside the collecting hood to filter and separate impurities from the zinc liquid.

[0008] Furthermore, the support frame is in a U-shape so as to allow the galvanized sheet to move for zinc liquid separation.

[0009] Furthermore, openings are provided on both the left and right sides of the separation box for the galvanized sheets to enter and exit the separated zinc liquid.

[0010] Furthermore, the length of the air knife nozzle is greater than the length of the inner wall of the opening, so as to ensure that the galvanized sheet can be fully covered and the zinc liquid can be separated.

[0011] Furthermore, auxiliary rollers are provided on the inner walls on both sides of the separation box to keep the galvanized sheet moving smoothly.

[0012] Furthermore, the outer side of the air knife nozzle on the upper side is connected to an air inlet pipe for drawing compressed air into the air knife nozzle to form an air knife.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The continuous galvanizing equipment with zinc liquid separation function can avoid uneven thickness of the galvanized layer caused by residual solidification of zinc liquid by timely separating excess zinc liquid on the surface of the sheet, thereby ensuring the uniformity of the zinc layer. The continuous galvanizing equipment accelerates the production speed and improves the overall production efficiency through the automated zinc liquid separation process. At the same time, it reduces the waste of zinc materials and reduces production costs by separating and recycling excess zinc liquid. The reflux component design allows the separated zinc liquid to be filtered and reflowed into the galvanizing tank, thereby realizing the recycling of zinc liquid. The precise blowing of the air knife nozzle can more effectively remove the zinc liquid on the surface of the sheet, avoiding excessively thick or uneven zinc layer and improving the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the separation mechanism of the utility model;

[0017] Figure 3 It is a partial schematic diagram of the separation mechanism of the utility model.

[0018] In the figure: 1. Galvanizing equipment body; 2. Separation mechanism; 21. Support frame; 22. Separation box; 23. Connecting frame; 24. Air knife nozzle; 25. Diverter pipe; 26. Auxiliary roller; 27. Inlet pipe; 3. Reflux assembly; 31. Collection hood; 32. Reflux pipe; 33. Filter plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1: Please refer to Figure 1 to Figure 2 In this embodiment, a continuous galvanizing equipment with a zinc liquid separation function includes a separation mechanism 2 arranged on the outside of the galvanizing equipment body 1. The sheet material undergoes pre-treatment processes such as cleaning and annealing to remove surface oil and oxide scale to ensure good adhesion of the zinc layer. The sheet material enters the galvanizing tank through a sinking roller device and contacts with the molten zinc liquid to form a zinc layer. The zinc liquid is separated after the sheet material leaves the zinc liquid.

[0021] Example 2: Please refer to Figures 1 to 3 On the basis of the first embodiment, the separation mechanism 2 in this embodiment includes a support frame 21 and a separation box 22. The support frame 21 is arranged on the outside of the galvanizing equipment body 1, and the separation box 22 is connected to the upper surface of the support frame 21 to collect and separate excess zinc liquid. A connecting frame 23 is provided on the back wall of the inner cavity of the separation box 22. The upper and lower sides of the left side of the connecting frame 23 are inclinedly provided with air knife nozzles 24 to introduce compressed air to form an air knife to blow away excess zinc liquid on the surface of the galvanized sheet. A shunt pipe 25 is connected between the two air knife nozzles 24. The external compressor is first connected to the air knife nozzle 24 system of the equipment through the air inlet pipe 27 to ensure a stable supply of compressed air. The compressed air first enters the upper air knife nozzle 24, and then is introduced into the lower air knife nozzle 24 through the shunt pipe 25 to form an air knife with a high-speed airflow at the air knife nozzles 24 on the upper and lower sides. A reflux component 3 is provided inside the separation box 22 to filter the separated zinc liquid and reflux it into the galvanizing equipment body 1.

[0022] The reflux assembly 3 includes a collecting hood 31, which is arranged inside the separation box 22 and below the connecting frame 23, so as to collect the separated galvanizing liquid. The inner bottom wall of the collecting hood 31 is connected with a reflux pipe 32, and the bottom end of the reflux pipe 32 passes through and extends to the inside of the galvanizing equipment body 1, so as to return the separated galvanizing liquid to the galvanizing equipment body 1. A filter plate 33 is horizontally arranged inside the collecting hood 31 to filter and separate impurities from the zinc liquid. The excess zinc liquid blown out falls into the collecting hood 31 for preliminary collection. The zinc liquid in the collecting hood 31 is filtered for impurities through the filter plate 33 to ensure the purity of the zinc liquid.

[0023] In this embodiment, the support frame 21 is U-shaped, which is used for the galvanized sheet to move for zinc liquid separation. Openings are provided on the left and right sides of the separation box 22 for the galvanized sheet to enter and exit the separated zinc liquid. The length of the air knife nozzle 24 is greater than the length of the inner wall of the opening to ensure that the galvanized sheet can be fully covered with the separated zinc liquid. Auxiliary rollers 26 are provided on the inner walls of the left and right sides of the separation box 22 to keep the galvanized sheet moving smoothly. The galvanized sheet after hot-dip galvanizing in the galvanizing tank enters the separation box 22 through the opening. The galvanized sheet passes through the auxiliary rollers 26. These rollers help stabilize the movement of the galvanized sheet. These rollers help stabilize the movement of the galvanized sheet so that it is located between the two air knife nozzles 24. The outer side of the upper air knife nozzle 24 is connected to an air inlet pipe 27 for drawing compressed air into the air knife nozzle 24 to form an air knife. The galvanized sheet enters from an opening on one side. As it moves, it is pulled out through two air knives. The inclined design of the air knife nozzle blows out excess zinc liquid.

[0024] It should be noted that the filtered zinc liquid flows back to the zinc tank of the galvanizing equipment body 1 through the reflux pipe 32 to realize the recycling of the zinc liquid. The galvanized sheet separated by the zinc liquid passes through the opening on the other side of the separation box 22 and continues to move to the next process.

[0025] The working principle of the above embodiment is:

[0026] (1) The sheet material undergoes pre-treatment processes such as cleaning and annealing to remove surface oil and scale to ensure good adhesion of the zinc layer. The sheet material enters the galvanizing tank through a sinking roller device and contacts with molten zinc liquid to form a zinc layer. After the sheet material leaves the zinc liquid, the zinc liquid is separated. First, the external compressor is connected to the air knife nozzle 24 system of the equipment through the air inlet pipe 27 to ensure a stable supply of compressed air. The compressed air first enters the upper air knife nozzle 24, and then is introduced into the lower air knife nozzle 24 through the diverter pipe 25. High-speed air flow air knives are formed at the air knife nozzles 24 on the upper and lower sides to prepare for synchronous zinc liquid separation on the upper and lower sides of the galvanized sheet. After hot-dip galvanizing in the galvanizing tank, the galvanized sheet enters the separation box 22 through the opening. The galvanized sheet passes through the auxiliary rollers 26. These rollers help stabilize the movement of the galvanized sheet so that it is located between the two air knife nozzles 24. The galvanized sheet enters from the opening on one side and is pulled out through the two air knives as it moves. The tilted design of the air knife nozzle blows out the excess zinc liquid.

[0027] (2) The excess zinc liquid blown out falls into the collecting hood 31 for preliminary collection. The zinc liquid in the collecting hood 31 is filtered for impurities through the filter plate 33 to ensure the purity of the zinc liquid. The filtered zinc liquid flows back to the zinc tank of the galvanizing equipment body 1 through the reflux pipe 32 to achieve the recycling of the zinc liquid. The galvanized sheet that has been separated from the zinc liquid passes through the opening on the other side of the separation box 22 and continues to move to the next process.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] If this patent discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or as: a non-detachable fixed connection (for example, riveting, welding). Of course, the fixed connection can also be replaced by an integrated structure (for example, manufactured by a casting process) (except where it is obviously impossible to use an integrated forming process).

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A continuous galvanizing equipment with zinc liquid separation function, characterized in that: It comprises a separation mechanism (2) arranged outside a galvanizing equipment body (1); The separation mechanism (2) comprises a support frame (21) and a separation box (22), wherein the support frame (21) is arranged outside the galvanizing equipment body (1), and the separation box (22) is connected to the upper surface of the support frame (21) for collecting and separating excess zinc liquid, a connecting frame (23) is provided on the back wall of the inner cavity of the separation box (22), and air knife nozzles (24) are obliquely provided on the upper and lower sides of the left side of the connecting frame (23) for introducing compressed air to form an air knife to blow away excess zinc liquid on the surface of the galvanized sheet, a shunt pipe (25) is connected between the two air knife nozzles (24), and a reflux component (3) is provided inside the separation box (22) for filtering the separated zinc liquid and returning it to the galvanizing equipment body (1); The reflux assembly (3) comprises a collecting hood (31), which is arranged inside the separation box (22) and below the connecting frame (23) to collect the separated galvanizing liquid. The inner bottom wall of the collecting hood (31) is connected to a reflux pipe (32), and the bottom end of the reflux pipe (32) passes through and extends to the inside of the galvanizing equipment body (1) to return the separated galvanizing liquid to the galvanizing equipment body (1). A filter plate (33) is horizontally arranged inside the collecting hood (31) to filter and separate impurities from the galvanizing liquid.

2. The continuous galvanizing equipment with zinc liquid separation function according to claim 1 is characterized in that: The support frame (21) is in a U-shape, and is used for moving the galvanized sheet to separate the zinc liquid.

3. The continuous galvanizing equipment with zinc liquid separation function according to claim 1 is characterized in that: The left and right sides of the separation box (22) are provided with openings for the galvanized plates to enter and exit the separated zinc liquid.

4. The continuous galvanizing equipment with zinc liquid separation function according to claim 3 is characterized in that: The length of the air knife nozzle (24) is greater than the length of the inner wall of the opening, so as to ensure that the galvanized sheet can be fully covered with the separated zinc liquid.

5. The continuous galvanizing equipment with zinc liquid separation function according to claim 1 is characterized in that: Auxiliary rollers (26) are provided on the inner walls on the left and right sides of the separation box (22) to keep the galvanized sheet moving smoothly.

6. The continuous galvanizing equipment with zinc liquid separation function according to claim 1, characterized in that: The outer side of the air knife nozzle (24) on the upper side is connected to an air inlet pipe (27) for drawing compressed air into the air knife nozzle (24) to form an air knife.

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