阅读说明：本技术 用于锌锅气刀刀腔清理的刮刀片组件 (Scraper blade assembly for cleaning zinc pot air knife cavity ) 是由 强晓彬 王鲁 李庆胜 张春青 朱炜 顾希成 于 2018-07-27 设计创作，主要内容包括：本发明公开了一种用于锌锅气刀刀腔清理的刮刀片组件,其包括：第一刮刀片,其安装于刀架上,第一刮刀片包括：固定部,所述第一刮刀片通过固定部被安装于刀架上；倒U型的立面部,其自固定部竖向地向下伸出,立面部与固定部之间的夹角呈钝角α；第一刀片和第二刀片,其均自立面部的U型槽的底部向朝着固定部的一侧横向伸出。本发明所述的用于锌锅气刀刀腔清理的刮刀片组件能够对气刀刀腔内的上下表面、刀唇唇口以及刀唇外部的锌渣进行快速且有效地清理,具有较高的自动化程度,无需人工手动刮除,从而确保作业安全。此外,还能够提升锌渣清理效果,保证带钢产品良好的表面质量。(The invention discloses a scraper blade assembly for cleaning a zinc pot air knife cavity, which comprises a first scraper blade and a second scraper blade, wherein the first scraper blade is arranged on a knife rest, the first scraper blade comprises a fixing part, the first scraper blade is arranged on the knife rest through the fixing part, an inverted U-shaped vertical surface part vertically extends downwards from the fixing part, an included angle between the vertical surface part and the fixing part is an obtuse angle α, and the first scraper blade and the second scraper blade transversely extend towards one side of the fixing part from the bottom of a U-shaped groove of the vertical surface part.)

1. A scraper blade subassembly that is used for clearance of zinc pot air knife sword chamber, its characterized in that includes: a first doctor blade mounted on a blade holder, the first doctor blade comprising:

a fixing portion through which the first doctor blade is mounted on the holder;

the vertical face part extends downwards from the fixing part vertically, and an included angle formed between the vertical face part and the fixing part is an obtuse angle α;

and the first blade and the second blade respectively transversely extend from the bottom of the U-shaped groove of the vertical surface part to one side facing the fixing part.

2. The doctor blade assembly of claim 1, wherein the first blade and the second blade are disposed non-coplanar.

3. The doctor blade assembly of claim 1 wherein the anchor portion defines a longitudinal waist opening.

4. The doctor blade assembly as claimed in claim 1, wherein the obtuse angle α is in the range of 125 ° and 135 °.

5. The doctor blade assembly of claim 1, wherein the riser portion extends in a vertical direction to a length greater than a height of a lip of the air knife.

6. The doctor blade assembly of claim 1, wherein the first and second blades extend in a transverse direction to a length greater than a platform length within the blade cavity.

7. The doctor blade assembly of claim 1, wherein the thickness t of the first blade and/or the second blade satisfies: (0.6-0.8). times.L 5, wherein L5 represents the air gap of the air knife.

8. The doctor blade assembly as claimed in claim 1, wherein the radius R of the bending angle of the first and second blades with respect to the standing surface portion is 0.5 to 0.8 mm.

9. The doctor blade assembly of any one of claims 1-8, further comprising: locate second scraper blade and the third scraper blade of first scraper blade both sides respectively, second scraper blade and third scraper blade set up relatively each other, and the homogeneous phase sets up perpendicularly for first scraper blade.

10. The doctor blade assembly of claim 9, wherein the second doctor blade and the third doctor blade each comprise: a fixing portion for fixing the second doctor blade or the third doctor blade to the holder; a blade portion extending from the fixing portion; the blade portions of the second doctor blade and the third doctor blade, which are disposed opposite to each other, are disposed oppositely in a splay shape.

Technical Field

The invention relates to a scraper blade assembly, in particular to a scraper blade assembly for cleaning a zinc pot air knife cavity.

Background

The zinc pot air knife is an important device of a galvanizing unit, nitrogen is sprayed to the surface of strip steel subjected to zinc liquid immersion plating of a zinc pot by an air knife air cavity, so that the weight of a zinc layer on the surface of the strip steel is uniformly adjusted, however, in the production process, due to the relationship of air flow of the air knife, part of the zinc liquid is sprayed to the edge of the air knife and is solidified to generate zinc slag, air knife stripes appear, and the product quality is seriously influenced, so that the cleaning of the edge of the air knife is very important.

Disclosure of Invention

The invention aims to provide a scraper blade assembly for cleaning a zinc pot air knife cavity, which can quickly and effectively clean the upper and lower surfaces in the air knife cavity, a knife lip and zinc dross outside the knife lip, has high automation degree, does not need manual scraping, and ensures the operation safety. In addition, the cleaning effect of zinc slag can be improved, and the good surface quality of the strip steel product is ensured.

In order to achieve the above object, the present invention provides a scraper blade assembly for cleaning a zinc pot air knife cavity, comprising: a first doctor blade mounted on a blade holder, the first doctor blade comprising:

a fixing portion through which the first doctor blade is mounted on the holder;

the vertical face part extends downwards from the fixing part vertically, and an included angle formed between the vertical face part and the fixing part is an obtuse angle α;

and the first blade and the second blade respectively transversely extend from the bottom of the U-shaped groove of the vertical surface part to one side facing the fixing part.

In the technical scheme of the invention, the first blade and the second blade transversely extend towards one side facing the fixing part from the bottom of the U-shaped groove of the self-supporting surface part, so that the first blade and the second blade can clean zinc dross in the lip mouth of the air knife, in addition, the vertical surface part of the inverted U-shaped part vertically extends downwards from the fixing part, the function of the vertical surface part is to clean the zinc dross generated by sputtering of zinc liquid on the lip mouth of the air knife and the zinc dross adhered to the lip mouth of the air knife after being cleaned out from the lip mouth of the air knife, so as to ensure the cleaning of the lip mouth of the air knife, an included angle between the vertical surface part and the fixing part is an obtuse angle α, so that the air flow blown by the air knife can be guided, and zinc spraying is avoided.

Further, in the doctor blade assembly of the present invention, the first blade and the second blade are disposed non-coplanar.

In the technical scheme of the invention, the first blade and the second blade are arranged in a non-coplanar manner so as to clean zinc dross on the upper surface and the lower surface of the knife cavity of the air knife. In some embodiments, the first blade may be disposed to contact an upper surface of the air-knife cavity to clean the upper surface of the air-knife cavity with the first blade, and the second blade may be disposed to contact a lower surface of the air-knife cavity to clean the lower surface of the air-knife cavity with the second blade. Of course, in other embodiments, the first blade may be configured to contact a lower surface of the air-knife cavity and the second blade may be configured to contact an upper surface of the air-knife cavity.

Furthermore, in the doctor blade assembly according to the present invention, the fixing portion is formed with a long waist hole.

In the technical scheme of the invention, the fixing part is provided with the long waist hole so as to adjust the mounting position of the first scraper blade on the air knife and ensure that the first scraper blade is tightly attached to the lip of the air knife lip, thereby ensuring the cleaning effect.

Further, in the doctor blade assembly of the invention, the obtuse angle α may range from 125 to 135.

Further, in the doctor blade assembly according to the present invention, the vertical surface portion may extend in a vertical direction to a length greater than a height of a lip of the air knife.

Further, in the doctor blade assembly according to the invention, the first and second blades extend in the transverse direction over a length greater than a length of the platform in the blade cavity.

In the technical scheme of the invention, the extension length of the first blade and the second blade in the transverse direction is greater than the length of the platform in the knife cavity, so that the first blade and the second blade can be used for comprehensively cleaning the upper surface and the lower surface of the knife cavity of the air knife.

Further, in the doctor blade assembly according to the present invention, the thickness t of the first blade and/or the second blade satisfies: (0.6-0.8). times.L 5, wherein L5 represents the air gap of the air knife.

In the technical scheme of the invention, because the strength of the blade is influenced by the thinness of the blade, the blade is easy to deform, and the blade is easy to block when the thickness of the blade is too thick, the inventor controls the thickness t of the first blade and/or the second blade to satisfy the following conditions: (0.6-0.8). times.L 5, wherein L5 represents the air gap of the air knife.

Further, in the scraper blade assembly, the radius R of the bending angle between the first blade and the vertical surface part and the bending angle between the second blade and the vertical surface part are 0.5-0.8 mm.

In the technical scheme of the invention, in order to ensure that the vertical surface part is vertically attached to the lip of the air knife lip as much as possible and ensure the cleaning effect, the radius R of the bending angles of the first blade, the second blade and the vertical surface part is controlled to be 0.5-0.8 mm.

Further, in the doctor blade assembly according to the present invention, there is further provided: locate second scraper blade and the third scraper blade of first scraper blade both sides respectively, second scraper blade and third scraper blade set up relatively each other, and the homogeneous phase sets up perpendicularly for first scraper blade.

In the technical scheme of the invention, the second scraper blade and the third scraper blade are arranged opposite to each other and are both arranged vertically relative to the first scraper blade, and the second scraper blade and the third scraper blade mainly play two roles, namely, on one hand, the second scraper blade can clean zinc dross outside the upper side of the air knife cavity, on the other hand, the second scraper blade can play a supporting role, and the first scraper blade is prevented from being damaged due to friction and vibration in the transverse moving (namely, moving along the length direction of the air knife lip) cleaning operation. Furthermore, in some embodiments, the material of both the second doctor blade and the third doctor blade may be a copper alloy in order not to damage the coating on the surface of the air knife.

Further, in the doctor blade assembly of the present invention, each of the second doctor blade and the third doctor blade includes: a fixing portion for fixing the second doctor blade or the third doctor blade to the holder; a blade portion extending from the fixing portion; the blade portions of the second doctor blade and the third doctor blade, which are disposed opposite to each other, are disposed oppositely in a splay shape.

In some preferred embodiments, the blade portions of the second doctor blade and/or the third doctor blade are disposed at an angle β of 120 ° to 140 ° with respect to the fixed portion.

Compared with the prior art, the scraper blade assembly for cleaning the zinc pot air knife cavity has the following beneficial effects:

(1) the scraper blade assembly for cleaning the zinc pot air knife cavity occupies a small space in structure, and can effectively prevent the problem of equipment damage caused by interference among the scraper blade assembly, the air knife and baffle equipment.

(2) The scraper blade assembly for cleaning the zinc pot air knife cavity can quickly and effectively clean the upper and lower surfaces in the air knife cavity, the knife lip mouth and zinc slag outside the knife lip, improves the effectiveness and safety of cleaning operation, reduces the quantity of waste and defective products caused by the cleaning operation, can realize stable operation, improves the cleaning effect of the zinc slag, and ensures the good surface quality of strip steel products.

Drawings

Fig. 1 is a schematic structural diagram of a doctor blade assembly for zinc pot air knife cavity cleaning, which is provided by the invention and is arranged on a knife rest under certain embodiments.

Fig. 2 schematically shows a perspective view of a first doctor blade of a doctor blade assembly for zinc pot air knife cavity cleaning according to the present invention in certain embodiments.

Fig. 3 schematically shows a perspective view of a first doctor blade of a doctor blade assembly for zinc pot air knife chamber cleaning according to the present invention in some embodiments from another perspective view.

Fig. 4 is a side view of a first doctor blade of a doctor blade assembly for zinc pot air knife chamber cleaning according to certain embodiments of the present invention.

Fig. 5 is a front view of a first doctor blade of a doctor blade assembly for zinc pot air knife chamber cleaning according to certain embodiments of the present invention.

Fig. 6 shows the structural parameters of the first doctor blade in the doctor blade assembly for zinc pot air knife cavity cleaning according to the present invention in some embodiments.

Fig. 7 is a perspective view of a second doctor blade in a doctor blade assembly for zinc pot air knife cavity cleaning according to certain embodiments of the invention.

Fig. 8 is a side view of a second doctor blade in some embodiments of the doctor blade assembly for zinc pot air knife chamber cleaning according to the present invention.

Detailed Description

The doctor blade assembly for zinc pot air knife chamber cleaning according to the invention will be further explained and illustrated with reference to the drawings and the specific examples of the present description, which, however, should not be construed as unduly limiting the technical solution of the invention.

Fig. 1 is a schematic structural diagram of a doctor blade assembly for zinc pot air knife cavity cleaning, which is provided by the invention and is arranged on a knife rest under certain embodiments. Fig. 2 schematically shows a perspective view of a first doctor blade of a doctor blade assembly for zinc pot air knife cavity cleaning according to the present invention in certain embodiments. Fig. 3 schematically shows a perspective view of a first doctor blade of a doctor blade assembly for zinc pot air knife chamber cleaning according to the present invention in some embodiments from another perspective view. Fig. 4 is a side view of a first doctor blade of a doctor blade assembly for zinc pot air knife chamber cleaning according to certain embodiments of the present invention. Fig. 5 is a front view of a first doctor blade of a doctor blade assembly for zinc pot air knife chamber cleaning according to certain embodiments of the present invention. Fig. 6 shows the structural parameters of the first doctor blade in the doctor blade assembly for zinc pot air knife cavity cleaning according to the present invention in some embodiments.

As can be seen from fig. 1, in some embodiments, the doctor blade assembly for zinc pot air knife cavity cleaning according to the present invention may comprise: a first scraper blade 1, a second scraper blade 2 and a third scraper blade 3, all mounted on a blade holder 4.

As can be seen with further reference to fig. 2, 3, 4, 5 and 6, in some embodiments, the first scraper blade 1 may include a fixing portion 11, an inverted U-shaped elevation portion 12, a first blade 13 and a second blade 14, wherein the fixing portion 11 is formed with a long waist hole 111 so that when the first scraper blade 1 is mounted on the tool holder 4 by bolts 8 passing through the long waist hole 111 and corresponding bolt holes (not shown) on the tool holder 4, the position of the first scraper blade 1 may be adjusted as needed so as to ensure that the first scraper blade 1 is closely attached to the lip of the air knife lip 5 and ensure the cleaning effect, the elevation portion 12 extends vertically downward from the fixing portion 11 and functions to clean zinc dross generated by splashing on the lip of the air knife lip 5 due to zinc liquid and zinc dross adhering to the lip 5 after being cleaned from the inside the air knife cavity 6, so as to ensure that the lip 5 is cleaned, in some preferred embodiments, the fixing portion 12 extends along a vertical direction 3512 to avoid an obtuse angle with the lip 12L 35 of the fixing portion 35, so as to avoid the lip 12 extending along a full-side of the fixing portion 3512.

In addition, the first blade 13 and the second blade 14 both transversely extend from the bottom of the U-shaped groove of the vertical surface portion 12 to the side facing the fixing portion 11, so that the first blade 13 and the second blade 14 can clean the zinc dross in the air knife cavity 6. The first blade 13 and the second blade 14 are arranged in a non-coplanar manner so as to clean zinc dross on the upper and lower surfaces of the knife chamber 6 of the air knife. Specifically, the first blade 13 is disposed to contact the upper surface a of the air-knife chamber 6 so as to clean the upper surface a of the air-knife chamber 6 by the first blade 13, and the second blade 14 is disposed to contact the lower surface B of the air-knife chamber 6 so as to clean the lower surface B of the air-knife chamber 6 by the second blade 14. Of course, in other embodiments, the first blade 13 may be arranged to contact the lower surface B of the air-knife chamber 6 and the second blade 14 may be arranged to contact the upper surface a of the air-knife chamber 6.

It should be noted that in some preferred embodiments, the extension length L2 of the first and second blades 13, 14 in the transverse direction is greater than the platform length L1 in the knife cavity 6, thereby ensuring that the first and second blades 13, 14 provide full cleaning of the upper and lower surfaces of the knife cavity 6. In addition, since the blade is too thin and affects its strength, so that deformation is easily caused, and too thick and jamming is easily caused, in some preferred embodiments, the thickness t of the first blade 13 and/or the second blade 14 may be controlled to satisfy: (0.6-0.8). times.L 5, wherein L5 represents the air gap of the air knife. In order to ensure the cleaning effect by making the vertical face 12 vertically contact with the lip of the air knife lip 5 as much as possible, in some preferred embodiments, the radius R of the bending angle between the first blade 13 and the vertical face 12 and the second blade 14 may be controlled within the range of 0.5 to 0.8 mm.

Fig. 7 is a perspective view of a second doctor blade in a doctor blade assembly for zinc pot air knife cavity cleaning according to certain embodiments of the invention. Fig. 8 is a side view of a second doctor blade in some embodiments of the doctor blade assembly for zinc pot air knife chamber cleaning according to the present invention.

As can be seen from fig. 1, 7 and 8, in some embodiments, the second doctor blade 2 may include a fixing portion 21 for fixing the second doctor blade 2 to the holder 4 and a blade portion 22 extending from the fixing portion 21, wherein the fixing portion 21 may be formed with a long-waist hole 211 so that when the second doctor blade 2 is mounted to the holder 4 by bolts 9 passing through the long-waist hole 211 and corresponding bolt holes (not shown) in the holder 4, the position of the second doctor blade 2 may be adjusted as needed to ensure that the second doctor blade 2 is closely attached to the outer surface of the upper side of the air knife cavity, thereby ensuring the cleaning effect.

Furthermore, in some embodiments, the third doctor blade 3 may have the same structure as the second doctor blade 2. The second scraper blade 2 and the third scraper blade 3 are respectively arranged on two sides of the first scraper blade 1, are arranged oppositely, and are vertically arranged relative to the first scraper blade 1. In some preferred embodiments the blade portions 22 of the second doctor blade 2 and the blade portions (not shown) of the third doctor blade 3 are arranged in a splayed manner opposite to each other in order to provide a certain cushioning effect.

It should be noted that the second scraper blade 2 and the third scraper blade 3 mainly serve two purposes, namely, on one hand, cleaning the zinc dross outside the upper side of the air knife cavity, and on the other hand, supporting the air knife cavity to prevent the first scraper blade 1 from being damaged due to friction and vibration during the transverse movement (i.e., along the length direction of the air knife lip 5) cleaning operation.

Furthermore, in some embodiments, the material of the first doctor blade 1, the second doctor blade 2 and the third doctor blade 3 may be copper alloy so as not to damage the coating on the surface of the air knife.

Therefore, the scraper blade assembly for cleaning the zinc pot air knife cavity occupies a small space in structure, and can effectively prevent the problem of equipment damage caused by interference among the scraper blade assembly, the air knife and baffle equipment. In addition, the scraper blade assembly for cleaning the zinc pot air knife cavity can quickly and effectively clean the zinc dross on the upper surface, the lower surface, the knife lip mouth and the outer part of the knife lip in the air knife cavity, improves the effectiveness and the safety of cleaning operation, reduces the quantity of defective products caused by the cleaning operation, can realize stable operation, improves the cleaning effect of the zinc dross, and ensures the good surface quality of strip steel products.

It should be noted that the prior art in the protection scope of the present invention is not limited to the examples given in the present application, and all the prior art which is not inconsistent with the technical scheme of the present invention, including but not limited to the prior patent documents, the prior publications and the like, can be included in the protection scope of the present invention.

In addition, the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other.

It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.