Air knife device for removing foreign matters at inlet of electrogalvanizing production line

Abstract

The utility model provides an air knife device for removing foreign matters at an inlet of an electro-galvanizing production line, which relates to the technical field of electro-galvanizing production and comprises two supports mounted at a steel structure in front of a tension roller of the electro-galvanizing production line, fixed bases are welded on the supports, and a removing device is mounted on the fixed bases on two sides; the removing device comprises a removing support and a nozzle. According to the air knife device for removing the foreign matters at the inlet of the electrogalvanizing production line, the fan-shaped nozzles are arranged above the strip steel, so that the foreign matters fall off from two sides after being purged, the cost is low, the installation is simple and convenient, a roller system is not damaged, the foreign matters of electrogalvanizing raw materials can be removed under the condition of ensuring continuous production of a unit, and the production efficiency is improved. And the unit operation efficiency, the production rate and the contract delivery rate are improved.

Description

Technical Field

[0001] This utility model relates to the field of electroplating zinc production technology, and in particular to an air knife device for removing foreign objects from the inlet of an electroplating zinc production line. Background Technology

[0002] Widely used in foreign automobile factories, electro-galvanized steel sheets account for up to 90% of the outer panels of high-end German automobiles. Electro-galvanized steel sheets have excellent corrosion resistance and surface quality, making them the first choice for high-end car outer panels. Fingerprint-resistant steel sheets have the characteristics of resisting fingerprints and oil stains, making them a premium electro-galvanized product. Unlike traditional galvanized products, electro-galvanized products have a more uniform and dense coating surface. Therefore, except for conductive rollers and tensioning rollers, all other rollers in the electro-galvanizing unit are rubber rollers, so foreign objects must be prevented.

[0003] The inlet section of the electro-galvanizing unit is a key pre-treatment stage in a continuous galvanizing production line, and its process reliability directly affects the surface quality of the finished product and the operating efficiency of the unit. This section consists of a fully automated continuous processing system, including a feeding system, a welding machine, a pre-degreasing section, and a tension leveling mechanism. The continuous supply of raw materials is achieved through alternating feeding at two stations of the uncoiler, the narrow lap welding machine completes the high-speed lap joint of the strip head and tail, and the two-bending, two-straightening, four-roll tension leveling unit controls the elongation of the weld area to eliminate the yield plateau. In conjunction with the alkaline pre-degreasing tank, electrolytic cleaning and surface activation are achieved.

[0004] However, in industrial production, after cold-rolled hard raw materials undergo pre-processing such as pickling and annealing, their surfaces are prone to retaining complex contaminants, including emulsion decomposition products, iron powder particles, solidified rust-preventive oil residues, and foreign matter picked up during transportation. These unremoved contaminants accumulate on the tension roll surface or enter subsequent processes with the strip, causing through-strip defects on the plated surface. Once these foreign objects enter the mill's roller system, they create embossed defects, requiring shutdown for removal, severely impacting mill yield and contract delivery. Current solutions largely rely on manual inspection and periodic shutdowns for wiping. Achieving online real-time detection and efficient removal of contaminants from the strip surface has become a key technological bottleneck for improving the overall competitiveness of electroplating production lines. Utility Model Content

[0005] This invention provides an air knife device for removing foreign objects from the inlet of an electro-zinc plating production line, which can remove foreign objects from electro-zinc plating raw materials while ensuring continuous production of the unit.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An air knife device for removing foreign objects from the inlet of an electro-galvanizing production line includes two supports installed at the steel structure in front of the tension roller of the electro-galvanizing production line. Fixed bases are welded onto the supports, and the removal device is installed on the fixed bases on both sides. The removal device includes a removal support and a nozzle.

[0008] Furthermore, the removal bracket is connected to the fixed base by a snap-fit.

[0009] Furthermore, the cleaning bracket is a semi-circular bracket with a hollow interior. One end of the semi-circular bracket is sealed with a threaded metal cap and fixed in the buckle of a fixed base on one side. The other end of the semi-circular bracket passes through the buckle of the fixed base on the other side and is connected to the gas source device through a connecting pipe.

[0010] Furthermore, a flow control valve is installed on the connecting pipe.

[0011] Furthermore, a number of nozzles are evenly distributed on the semi-circular support, and the nozzles communicate with the interior of the semi-circular support.

[0012] Furthermore, the distance between the semi-circular bracket and the strip is 20cm, the angle between the nozzle and the strip is 60°, and the air source pressure of the air source device is 3.5bar.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model relates to an air knife device for removing foreign objects from the inlet of an electroplating zinc production line. By installing fan-shaped nozzles above the strip steel, foreign objects are blown away and fall off from both sides. This device can remove foreign objects from electroplating zinc raw materials while ensuring continuous production of the unit, thereby improving the unit's operating efficiency, yield, and contract delivery rate. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is the main view of the structure of this utility model.

[0018] Figure 3 for Figure 2 Enlarged view of a specific area.

[0019] Figure 4 This is a top view of the structure of this utility model.

[0020] Figure 5 This is the left view of the structure of this utility model.

[0021] Explanation of icon numbers:

[0022] 1. Remove bracket; 2. Nozzle; 3. Buckle; 4. Steel strip. Detailed Implementation

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] This utility model provides a technical solution: an air knife device for removing foreign matter from the inlet of an electroplating zinc production line, such as... Figure 1-5 As shown, the device includes two brackets installed on the steel structure in front of the tension roller of the electro-galvanizing production line. Fixed bases are welded to the brackets, and a cleaning device is installed on both fixed bases. The cleaning device includes a cleaning bracket 1 and a nozzle 2. The cleaning bracket 1 is connected to the fixed base via a snap-fit ​​3.

[0027] The cleaning bracket 1 is a semi-circular bracket with a hollow interior. One end of the semi-circular bracket is sealed with a threaded metal cap and fixed to a clip 3 on one side of the fixing base. The other end of the semi-circular bracket passes through a clip 3 on the other side of the fixing base and is connected to the air source device via a connecting pipe. A flow control valve is installed on the connecting pipe. The air source device has an air pressure of 3.5 bar. According to calculations, the horizontal force on the strip surface is 102 N, and the vertical force is 51.2 N. Several nozzles 2 are evenly distributed on the semi-circular bracket, and the nozzles 2 communicate with the interior of the semi-circular bracket. The distance between the semi-circular bracket and the strip 4 is 20 cm, and the angle between the nozzles 2 and the strip 4 is 60°.

[0028] Main construction methods and steps:

[0029] 1. Weld two supports at the front steel structure of the No. 0 tension roller in the electro-galvanizing production line.

[0030] 2. Fixing bases are welded onto the two side supports to secure the cleaning device.

[0031] 3. Use a stainless steel tube with an inner diameter of 21.3mm and a wall thickness of 2.5mm, bend it into a semi-circular bracket, and fix it to the fixed base.

[0032] 4. One end of the semi-circular bracket is sealed with a threaded metal cap, and the other end is connected with a quick-release connector. A valve is also installed to control the flow rate.

[0033] 5. The semi-circular bracket and strip 4 are 20cm apart, and the nozzle 2 and strip 4 are at an angle of 60°.

[0034] Nozzle 2 is a fan-shaped nozzle of model Lechler 652.886.17, ensuring that foreign objects fall off from both sides after being blown away. The fan-shaped spray pattern of nozzle 2 is ensured to form a 60° angle with the strip steel 4.

[0035] The unit shutdown for foreign object removal takes approximately one hour. The unit's output is 32 tons / hour, with about 9 tons of downgraded products, occurring about three times per month on average. Based on a profit of 200 yuan per ton of steel, the time and profit saved by using the foreign object removal device at the electro-galvanizing production line inlet are as follows:

[0036] Monthly profit: (1 hour * 32 tons / hour * 200 yuan / ton + 9 tons * 200 yuan / ton) * 3 times = 24,600 yuan.

[0037] The total profit for the year was 295,200 yuan.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air knife device for removing foreign matter from the inlet of an electroplating zinc production line, characterized in that, It includes two brackets installed at the steel structure in front of the tension roller of the electro-galvanizing production line, with fixed bases welded on the brackets, and a cleaning device installed on the fixed bases on both sides; the cleaning device includes a cleaning bracket (1) and a nozzle (2).

2. The air knife device for removing foreign matter from the inlet of an electroplating zinc production line according to claim 1, characterized in that, The cleaning bracket (1) is connected to the fixed base by a snap (3).

3. The air knife device for removing foreign matter from the inlet of an electroplating zinc production line according to claim 2, characterized in that, The cleaning bracket (1) is a semi-circular bracket with a hollow structure inside. One end of the semi-circular bracket is sealed with a threaded metal cap and fixed in the buckle (3) of the fixed base on one side. The other end of the semi-circular bracket passes through the buckle (3) of the fixed base on the other side and is connected to the gas source device through a connecting pipe.

4. The air knife device for removing foreign matter from the inlet of an electroplating zinc production line according to claim 3, characterized in that, A flow control valve is installed on the connecting pipe.

5. The air knife device for removing foreign matter from the inlet of an electroplating zinc production line according to claim 3, characterized in that, Several nozzles (2) are evenly distributed on the semi-circular support, and the nozzles (2) are connected to the interior of the semi-circular support.

6. The air knife device for removing foreign matter from the inlet of an electroplating zinc production line according to claim 5, characterized in that, The distance between the semi-circular bracket and the strip (4) is 20cm, the angle between the nozzle (2) and the strip (4) is 60°, and the air source pressure of the air source device is 3.5bar.

Images