A high-pressure dual-air knife device for continuous casting and rolling production lines

Abstract

This utility model relates to the field of metallurgical equipment technology, specifically a high-pressure double air knife device for continuous casting and rolling production lines. Through the parallel layout and adjustable angle design of the double air knives, it significantly improves the surface drying efficiency and carbon coating uniformity of the casting wheel, thereby effectively solving the problems of difficult demolding of casting billets and surface defects, and greatly improving product quality. The device includes a 6-point internal threaded pipe connector, a stainless steel double air knife body, and a high-pressure air pipe interface. The air pressure is adapted to 0.85MPa, the air outlet width is 1mm, and it has anti-corrosion and anti-rust properties, making it suitable for casting wheels of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically a high-pressure double air knife device for a continuous casting and rolling production line. Background Technology

[0002] A high-pressure air knife is a device that uses a high-pressure blower and a patented air knife to work together. Based on the Coanda effect, it forms a high-speed airflow sheet with a thickness of only 0.05 mm. Its main function is to quickly remove surface water film, and the drying efficiency is 30-40 times higher than that of traditional methods. Therefore, a high-pressure dual air knife device is needed for continuous casting and rolling production lines.

[0003] In response, Chinese patent application number CN207280155U discloses a high-pressure air knife device, including a frame, on which an upper high-pressure air knife and a lower high-pressure air knife located below the upper high-pressure air knife are installed. The upper high-pressure air knife and the lower high-pressure air knife are respectively connected to the air outlet pipe of a high-pressure blower. In addition to the upper high-pressure air knife, a lower high-pressure air knife is also provided below the upper high-pressure air knife, thereby achieving a more efficient air knife water scraping effect.

[0004] However, existing high-pressure dual-air knife devices used in continuous casting and rolling production lines are prone to residual moisture in the casting wheel due to insufficient air coverage area of ​​the single air knife. Residual moisture affects the uniformity of the carbon coating, causing difficulties in demolding and porosity on the surface of the billet, which seriously affects product quality.

[0005] Therefore, in order to solve the above problems, a high-pressure dual-air knife device for continuous casting and rolling production lines is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a high-pressure double air knife device for continuous casting and rolling production lines, in order to solve the problems mentioned in the background art. In the prior art, the high-pressure double air knife device for continuous casting and rolling production lines has insufficient air coverage area of ​​a single air knife, which easily leads to residual moisture on the casting wheel. The residual moisture affects the uniformity of the carbon coating, causing difficulties in demolding and porosity on the surface of the billet, which seriously affects the product quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure double air knife device for a continuous casting and rolling production line, comprising: a grooved plate and a double air knife body, wherein the upper end of the grooved plate is provided with the double air knife body, a limiting hole is opened in the middle of the grooved plate, and screw holes are opened on both sides of the grooved plate, a double air knife mechanism is provided on the double air knife body, a pipe joint is provided in the double air knife mechanism, a first high-pressure air knife outlet is opened on the double air knife body, and a second high-pressure air knife outlet is opened on the double air knife body, and an end cap is provided at the other end of the double air knife body. The device adopts a parallel layout of double air knives and an adjustable angle design, which significantly improves the surface drying efficiency of the casting wheel and the uniformity of the carbon coating.

[0008] Preferably, the grooved plate is provided with a support mechanism, the support mechanism is provided with a limiting plate, and a screw is fixedly installed on the limiting plate. The grooved plate can be used to support and fix the support mechanism.

[0009] Preferably, the bottom end of the screw passes through a screw hole, and a nut is threadedly installed at the bottom end of the screw, so that the screw passes through the screw hole and is fixed by the nut.

[0010] Preferably, a ceramic plate is fixedly installed on the upper end of the screw, and a fixing block is fixedly installed on the top of the screw. Using the ceramic plate on the screw can improve the high temperature resistance of the bracket.

[0011] Preferably, a concave plate is fixedly installed on the upper end of the fixing block, and a limit bolt is threaded in the middle of the concave plate. The fixing block can support and fix the concave plate.

[0012] Preferably, the concave plate has an arc-shaped sleeve in the middle, one side of which is fixedly installed at the bottom of the double air knife body, and the arc-shaped sleeve is fixedly installed on the concave plate by a limiting bolt. The limiting bolt on the concave plate can be used to limit the arc-shaped sleeve.

[0013] Preferably, the pipe connector is fixedly installed on one side of the dual air knife body, and the end is fixedly installed on the other side of the dual air knife body, and the high-pressure gas is delivered to the dual air knife body using the pipe connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up a support mechanism, the body of the double air knife can be supported and fixed. Compared with the existing structure, since the double air knife is installed in parallel in the middle of the casting wheel, the temperature is higher. However, the ceramic plate on the support mechanism of this utility model can effectively make the bottom structure of the support resistant to high temperature, thereby improving the service life of the device.

[0016] 2. By incorporating a dual-air knife mechanism, this practical solution addresses the issue of insufficient air coverage by a single air knife, which can lead to residual moisture on the casting wheel. This residual moisture affects the uniformity of the carbon coating, causing difficulties in demolding and porosity on the surface of the casting billet, thereby improving the product quality of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front view schematic diagram of the main structure of the present utility model;

[0020] Figure 3 This is a front view sectional view of the structure of the dual air knife mechanism of this utility model;

[0021] Figure 4 This is a front sectional view of the grooved plate of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the support mechanism of this utility model.

[0023] In the diagram: 1. Groove plate; 11. Limiting hole; 12. Screw hole; 2. Double air knife body; 3. Support mechanism; 31. Limiting plate; 32. Screw; 33. Nut; 34. Ceramic plate; 35. Fixing block; 36. Concave plate; 37. Limiting bolt; 38. Arc sleeve; 4. Double air knife mechanism; 41. Pipe connector; 42. First high-pressure air knife outlet; 43. Second high-pressure air knife outlet; 44. End. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] Please see Figures 1-5 One embodiment provided by this utility model:

[0027] The dual air knife body 2 used in this application is a product that can be directly purchased on the market. Its principle and connection method are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0028] A high-pressure dual air knife device for a continuous casting and rolling production line includes: a grooved plate 1 and a dual air knife body 2. The grooved plate 1 has a dual air knife body 2 at its upper end, a limiting hole 11 in the middle, and screw holes 12 on both sides. The device is characterized by having a dual air knife mechanism 4 on the dual air knife body 2, a pipe connector 41 inside the mechanism 4, a first high-pressure air knife outlet 42 and a second high-pressure air knife outlet 43 on the body, and an end cap 44 at the other end. By providing this component, the drying efficiency and carbon coating uniformity of the casting wheel surface can be significantly improved through the dual air knife mechanism 4.

[0029] As a further improvement of this utility model, the groove plate 1 is provided with a support mechanism 3, and the support mechanism 3 is provided with a limiting plate 31. A screw 32 is fixedly installed on the limiting plate 31. By setting this component, the groove plate 1 can be fixed through the screw hole 12 on the groove plate 1.

[0030] As a further improvement of this utility model, the bottom end of the screw 32 passes through the screw hole 12, and a nut 33 is threadedly installed at the bottom end of the screw 32. By setting this component, the screw 32 can be limited and fixed by passing one end through the screw hole 11 and the nut 33.

[0031] As a further improvement of this utility model, a ceramic plate 34 is fixedly installed on the upper end of the screw 32, and a fixing block 35 is fixedly installed on the top of the screw 32. By setting this component, the high temperature at the bottom of the bracket can be effectively prevented by the ceramic plate 34.

[0032] As a further improvement of this utility model, a concave plate 36 is fixedly installed on the upper end of the fixing block 35, and a limit bolt 37 is threadedly installed in the middle of the concave plate 36. By setting this component, the concave plate 36 can be supported and fixed by the fixing block 35.

[0033] As a further improvement of this utility model, an arc-shaped sleeve 38 is provided in the middle of the concave plate 36. One side of the arc-shaped sleeve 38 is fixedly installed on the bottom end of the double air knife body 2, and the arc-shaped sleeve 38 is fixedly installed on the concave plate 36 by a limiting bolt 37. By setting this component, the arc-shaped sleeve 38 can be limited by the limiting bolt 37 on the concave plate 36.

[0034] As a further improvement of this utility model, the pipe connector 41 is fixedly installed on one side of the double air knife body 2, and the end 44 is fixedly installed on the other side of the double air knife body 2. By setting this component, high-pressure air can be transported through the pipe connector 41.

[0035] Working principle: When using the high-pressure double air knife device for continuous casting and rolling production lines, simply install the double air knives of the device parallel to each other in the middle of the casting wheel. Secure the device through the screw holes 12 on the grooved plate 1. Secure one end of the screw 2 on the limiting plate 31 within the support mechanism 3 through the limiting hole 11 on the grooved plate 1 and secure it with a nut 33. Support the concave plate 36 through the fixing block 34 on the screw 32. Finally, secure the arc-shaped sleeve 38 with the limiting bolt 37 on the concave plate 36. This completes the operation of the double air knife system. The blade body 2 is supported and fixed. The angle of the air knife inside the device is adjustable (recommended range 15°-30°), and the air pressure is set to 0.85MPa to adapt to different casting wheel sizes. This device is made of stainless steel, which is corrosion-resistant and rust-proof, extending its service life. The high-pressure air knife device with the designed contact position with the steel belt is fixed with a bracket. In this process, the groove plate 1 is tightened and fixed to the equipment with screws. Compressed air is connected to the high-pressure air knife through the pipe connector 41, which significantly improves the drying efficiency of the casting wheel surface and the uniformity of the carbon coating. This completes the work.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A high pressure dual air knife device for a continuous casting and rolling production line, comprising: The grooved plate (1) and the double air knife body (2) are provided at the upper end of the grooved plate (1). The grooved plate (1) has a limiting hole (11) in the middle and screw holes (12) on both sides of the grooved plate (1). The features are as follows: the double air knife body (2) is provided with a double air knife mechanism (4), the double air knife mechanism (4) is provided with a pipe joint (41), the double air knife body (2) is provided with a first high-pressure air knife outlet (42), and the double air knife body (2) is provided with a second high-pressure air knife outlet (43), and the other end of the double air knife body (2) is provided with an end (44).

2. The high-pressure double air-knife device for continuous casting and rolling production line according to claim 1, characterized in that: The groove plate (1) is provided with a support mechanism (3), and the support mechanism (3) is provided with a limiting plate (31), and a screw (32) is fixedly installed on the limiting plate (31).

3. The high-pressure double air-knife device for continuous casting and rolling production line according to claim 2, characterized in that: The bottom end of the screw (32) passes through the screw hole (12), and a nut (33) is threadedly installed at the bottom end of the screw (32).

4. The high-pressure double air-knife device for continuous casting and rolling production line according to claim 3, characterized in that: A ceramic plate (34) is fixedly installed on the upper end of the screw (32), and a fixing block (35) is fixedly installed on the top end of the screw (32).

5. A high-pressure double air knife device for a continuous casting and rolling production line according to claim 4, characterized in that: A concave plate (36) is fixedly installed on the upper end of the fixed block (35), and a limit bolt (37) is threaded in the middle of the concave plate (36).

6. A high-pressure double air-knife device for a continuous-casting-continuous-rolling production line according to claim 5, characterized in that: The concave plate (36) has an arc sleeve (38) in the middle. One side of the arc sleeve (38) is fixedly installed on the bottom end of the double air knife body (2), and the arc sleeve (38) is fixedly installed on the concave plate (36) by a limiting bolt (37).

7. The high-pressure double air-knife device for continuous casting and rolling production line according to claim 1, characterized in that: The pipe connector (41) is fixedly installed on one side of the double air knife body (2), and the end (44) is fixedly installed on the other side of the double air knife body (2).

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