阅读说明：本技术 一种镀锌生产线气刀刀唇保护装置 (Galvanizing line air knife lip protection device ) 是由 李峰 米罗刚 崔凤军 吴卫民 曹堃 于 2019-10-16 设计创作，主要内容包括：本发明涉及一种镀锌生产线气刀刀唇保护装置,属于冶金冷轧装备技术领域。包括保护罩(1)、防护垫(2),所述保护罩(1)为V型钢板,钢板弯曲角度与气刀刀唇(5)的外形角度相匹配,长度与气刀刀唇(5)的长度相匹配,所述防护垫(2)固定连接在保护罩(1)的内侧,防护垫(2)的长度与宽度与保护罩(1)相匹配。本发明的有益效果是：本发明具有结构简单、快捷方便等优点,对原有气刀结构没有任何改动,在拆装气刀前及气刀备件长期存放时,将该装置安装于刀唇上,可有效避免刀唇在此过程中因受外力损伤,可有效确保带钢在镀锌过程中的镀层质量,并降低气刀备件的修复成本。(The invention relates to an air knife lip protecting device for a galvanizing production line, and belongs to the technical field of metallurgical cold rolling equipment. Including safety cover (1), protective pad (2), safety cover (1) is the V shaped steel board, steel sheet bending angle and the appearance angle phase-match of air knife sword lip (5), the length phase-match of length and air knife sword lip (5), protective pad (2) fixed connection is in the inboard of safety cover (1), the length and the width and the protective cover (1) phase-match of protective pad (2). The invention has the beneficial effects that: the device has the advantages of simple structure, quickness, convenience and the like, the original air knife structure is not changed, the device is arranged on the knife lip before the air knife is disassembled and assembled and when the air knife spare parts are stored for a long time, the knife lip can be effectively prevented from being damaged by external force in the process, the coating quality of strip steel in the galvanizing process can be effectively ensured, and the repair cost of the air knife spare parts is reduced.)

1. The utility model provides a zinc-plating production line air knife lip protection device, its characterized in that includes safety cover (1), protection pad (2), safety cover (1) is V shaped steel board, the appearance angle phase-match of steel sheet bending angle and air knife lip (5), the length phase-match of length and air knife lip (5), protection pad (2) fixed connection is in the inboard of safety cover (1), the length and the width and the safety cover (1) phase-match of protection pad (2).

2. An air knife lip protection device in a galvanizing line according to claim 1, characterized in that the thickness of the protective cover (1) is 2-6 mm.

3. An air knife lip protection device of a galvanizing line as claimed in claim 1, characterized in that the single-side width of the protection cover (1) is 20-40 mm.

4. An air knife lip protection device of a galvanizing line as claimed in claim 1, characterized in that two connecting supports (4) are arranged on one side of the protection cover (1), the connecting supports (4) are provided with bolt holes, and the positions of the bolt holes are matched with the positions of the bolt holes on the air knife lip (5).

5. An air knife lip protection device of a galvanizing line as claimed in claim 1, characterized in that the protection pad (2) is silicon rubber.

Technical Field

The invention relates to an air knife lip protecting device for a galvanizing production line, and belongs to the technical field of metallurgical cold rolling equipment.

Background

The continuous hot galvanizing unit mostly adopts a blowing method to control the thickness of a zinc coating, a pair of nozzles with flat gaps are arranged at two sides of strip steel just after the strip steel is taken out of a zinc pot, gas is continuously blown to the surface of the strip steel through the nozzles, and the redundant zinc coating is scraped off, and redundant zinc liquid is scraped back to the zinc pot like a scraper, so the continuous hot galvanizing unit is called as an air knife.

With the increasingly competitive market of galvanized plates, the market of galvanized plates has higher and higher requirements on surface quality. The air knife is one of key devices for controlling the surface quality of the strip steel of the continuous hot galvanizing unit, and has higher device precision. In particular, the lip of the air knife, not only must have a continuous amount of clearance in the transverse direction, but must also have a high surface finish. Whether the air knife is in good condition is directly related to whether the air blown to the strip steel is continuous or not, and whether the thickness of the galvanized layer is consistent or not is directly determined, so that the surface quality of a galvanized product is directly influenced. However, when the air knife is replaced and the air knife spare parts are placed for a long time, the knife lip of the air knife is exposed and often damaged, after the damaged air knife is on line, even a tiny flaw on the knife lip can cause the blown gas to generate obvious change, and the strip steel generates an obvious coating defect along the longitudinal direction, so that the product quality is seriously influenced. The damaged air knife needs to be repaired off line, so that the production rhythm is seriously influenced, and meanwhile, the air knife is expensive to repair, so that the repair cost of spare parts is high. Therefore, it is necessary to design a protection device for the knife lip of the air knife to solve the above problems.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device which can protect the knife lip of an air knife and prevent the knife lip from being gouged.

The technical scheme for solving the technical problems is as follows:

the utility model provides a zinc-plating production line air knife lip protection device, includes safety cover, protection pad, the safety cover is V shaped steel board, steel sheet bending angle and the appearance angle phase-match of air knife lip, length and the length phase-match of air knife lip, protection pad fixed connection is in the inboard of safety cover, the length and the width and the safety cover phase-match of protection pad.

The thickness of the steel plate of the protective cover is 2-6 mm.

The single-side width of the protective cover is 20-40 mm.

One side of the protective cover is provided with two connecting supports, the connecting supports are provided with bolt holes, and the positions of the bolt holes are matched with the positions of the bolt holes in the air knife lip.

The protective pad is made of silicon rubber.

The invention has the beneficial effects that: the device has the advantages of simple structure, quickness, convenience and the like, the original air knife structure is not changed, the device is arranged on the knife lip before the air knife is disassembled and assembled and when the air knife spare parts are stored for a long time, the knife lip can be effectively prevented from being damaged by external force in the process, the coating quality of strip steel in the galvanizing process can be effectively ensured, and the repair cost of the air knife spare parts is reduced.

Drawings

FIG. 1 is a front view of the structure of the apparatus of the present invention;

FIG. 2 is a schematic cross-sectional view of the apparatus of the present invention;

FIG. 3 is a front view of the apparatus of the present invention in a mounted state with the lip of an air knife;

FIG. 4 is a cross-sectional view of the apparatus of the present invention in a mounted state with the lip of an air knife;

FIG. 5 is a schematic view of the apparatus of the present invention in a mounted state with the lip of an air knife;

labeled as: the protective cover 1, the protective pad 2, the fixing bolt 3, the connecting support 4 and the air knife lip 5.

Detailed Description

The invention is further illustrated by way of example in the following with reference to the accompanying drawings.

Referring to the figure, a galvanization production line air knife lip protection device, includes safety cover 1, protection pad 2, safety cover 1 is the V shaped steel board, and steel sheet bending angle and air knife lip 5's appearance angle phase-match, length and air knife lip 5's length phase-match, 2 fixed connection are in the inboard of safety cover 1 in the protection pad, and the length and the width of protection pad 2 and safety cover 1 phase-match. The steel plate thickness of the protective cover 1 is 3 mm. The single-sided width of the protective cover 1 is 25 mm. One side of the protective cover 1 is provided with two connecting supports 4, the connecting supports 4 are provided with bolt holes, and the positions of the bolt holes are matched with the positions of the bolt holes in the air knife lip 5. The protective pad 1 is made of silicon rubber.

Before the air knife is overhauled and replaced and when an off-line air knife spare part needs to be stored in a spare part area for a long time, the protective cover 1 is sleeved on the air knife lip 5, the protective pad 2 is ensured to be in close contact with the outer wall of the air knife lip 5, and the connecting support 4 is arranged on the air knife lip 5 through the fixing bolt 3.

After the installation is finished, when the protruding air knife blade lip 5 is impacted by external force, the protective cover 1 disperses the concentrated force generated by the impact point, and the elastic protective pad 2 buffers the impact force and then disperses the impact force to act on the air knife blade plate, so that the damage of the air knife blade lip 5 caused by the concentrated impact force at a certain point is effectively avoided, and the continuous consistency of blown gas is ensured.