High-pressure purging device for inner wall of furnace nose

Abstract

The invention discloses a furnace nose inner wall high-pressure purging device which comprises a body, a hose connecting part and a mounting head are arranged at the two ends of the body respectively, the hose connecting part is connected with a high-pressure air pump through a hose, a plurality of nozzles are arranged on the mounting head, the nozzles are obliquely arranged in the opposite direction of the hose connecting part, and the mounting head is connected with the hose connecting part. And the inclination angles of the nozzles are different. According to the blowing device, the nozzles with different angles are arranged on the mounting head, so that when the interior of the furnace nose is cleaned, the inner wall of the furnace nose can be blown and cleaned in a surrounding mode at a time, the problem that dead corners are not cleaned thoroughly is solved, meanwhile, the cleaning efficiency is improved, and the product quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of galvanizing / aluminum production, and particularly to a high-pressure purging device for the inner wall of a furnace nose. Background Art

[0002] In a continuous hot-dip galvanizing / aluminum production line, due to the particularity of its process, high-temperature molten metal (e.g., zinc liquid at 450°C / aluminum liquid at 650°C) needs to be coated on the surface of a high-temperature iron substrate (400 - 700°C). A sealed furnace nose is required between the heating furnace of the substrate and the zinc-aluminum pot for dissolving and coating the metal. The end of the furnace nose is immersed in the zinc pot to ensure air isolation and coating quality. Due to the evaporation of high-temperature molten metal in the inner wall of the furnace nose, a large amount of metal (zinc / aluminum) adheres to the inner wall. During continuous production, especially for products with high-grade surface requirements, the shedding of this part of metal ash onto the substrate will form defects, resulting in unqualified coated products. Therefore, thorough cleaning of the inside of the furnace nose can significantly reduce the downgrading caused by such defects. This position is in a high-temperature environment (the galvanizing temperature is about 470°C, and the production temperature of aluminum-silicon coating is about 660°C). At the same time, when cleaning this position, it must be noted that this part of metal ash cannot be blown into the heating furnace to pollute the heating furnace environment, and it is necessary to ensure that the inside and related structures are not damaged during cleaning. Since the upper end of the furnace nose is a sealed structure, a small hole is usually reserved at the upper end for cleaning. In the prior art, cleaning only relies on a single pipe to be manually inserted into the small hole and swung to change positions for random cleaning, which cannot ensure that all areas are cleaned, and the pipe diameter is relatively large, so it cannot be thoroughly cleaned. Summary of the Invention

[0003] Aiming at the above deficiencies existing in the prior art, the purpose of the present invention is to provide a high-pressure purging device for the inner wall of a furnace nose, which solves the problems of incomplete cleaning of the inner wall of the furnace nose in the prior art and easy formation of product defects due to the shedding of metal ash onto the substrate.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A high-pressure purging device for the inner wall of a furnace nose includes a main body. Hose connection parts and mounting heads are respectively arranged at both ends of the main body. The hose connection part is connected to a high-pressure air pump through a hose. A plurality of nozzles are provided on the mounting head. The nozzles are all inclined in the opposite direction of the hose connection part, and the inclination angles of each nozzle are different.

[0006] With the above structural design, by arranging a plurality of nozzles with different angles on the mounting head, when cleaning the inner wall of the furnace nose, cleaning can be carried out from different angles simultaneously, avoiding the problem that dead corners cannot be cleaned.

[0007] Preferably, both ends of the body are connected to the hose connection part and the mounting head by screw threads and then fixed by welding.

[0008] With the above structural design, screw connection facilitates installation during installation, and after installation is completed, it is fixed by welding, thereby ensuring that it will not fall off during high-pressure purging.

[0009] Preferably, a nozzle is provided in the middle of the mounting head, and a plurality of nozzles in a ring shape are arranged along the periphery of the nozzle.

[0010] Preferably, the nozzle is connected to the mounting head by screw threads and fixed by welding.

[0011] Preferably, the aperture of the nozzle is 1.2 mm, the number of nozzles is 7, 1 is arranged in the middle, evenly distributed on the periphery, and each nozzle is inclined downward by 45°.

[0012] With the above structural design, it can not only ensure cleaning without dead angles, but also ensure that when purging from above the furnace nose, the metal ash will fall downward uniformly due to this inclination angle design.

[0013] Preferably, the mounting head and the nozzle are made of stainless steel.

[0014] Preferably, a clamping part is provided at the free end of the hose connection part, and the hose connection part is connected to the hose and fixed by a hoop.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The purging device of the present invention is provided with a plurality of nozzles at different angles on the mounting head. Therefore, when cleaning the inside of the furnace nose, the inner wall of the furnace nose can be purged and cleaned in a circumferential manner at one time, avoiding the problem of unclean cleaning of dead angles. At the same time, the cleaning efficiency is also improved, and the product quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the mounting head in

[0019] In the figure:

[0020] body 1, hose connection part 2, clamping part 2a, mounting head 3, nozzle 4. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to explain in detail the technical content, structural features, achieved purposes and effects of the present invention, the following is described in detail in conjunction with the embodiments and with reference to the accompanying drawings.

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0023] Please refer to FIGS. 1 and Figure 2 , a high-pressure purging device for the inner wall of a furnace nose, comprising a body 1. Hose connection parts 2 and mounting heads 3 are respectively arranged at both ends of the body 1. The hose connection part 2 is connected to a high-pressure air pump through a hose, and high-pressure gas is provided by the high-pressure air pump. A plurality of nozzles 4 are arranged on the mounting head 3. The nozzles 4 are all inclined in the opposite direction of the hose connection part 2, and the inclination angles of the respective nozzles 4 are different. Since the nozzles 4 are arranged at multiple angles, when cleaning deep into the furnace nose from the inside, a circumferential cleaning of the inner wall can be achieved at one time. Compared with the prior art in which a single nozzle is used for cleaning, it is necessary to repeatedly clean different positions, and since the inner wall of the furnace nose is not convenient to observe and the cleaning depends entirely on the experience of workers, it is easy to cause incomplete cleaning of the inner wall.

[0024] Specifically as follows:

[0025] The two ends of the body 1 and the hose connection part 2 and the mounting head 3 are connected by threads and then fixed by welding, so it can be ensured that there will be no detachment under high-pressure conditions.

[0026] A nozzle 4 is arranged in the middle of the mounting head 3, and a plurality of nozzles 4 in a ring shape are arranged along the periphery of the nozzle 4. The nozzles 4 are connected to the mounting head 3 by threads and fixed by welding. In this embodiment, the aperture of the nozzle 4 is 1.2 mm. Relatively reducing the aperture can achieve further pressurization, and the number of nozzles 4 is 7, with 1 in the middle and evenly distributed on the periphery, and the adjacent nozzles 4 are spaced 60°, and each nozzle 4 is inclined downward by 45°. In this embodiment, the side of the mounting head 3 for mounting the nozzles 4 is set as a conical structure, which is convenient for the installation of the inclined nozzles 4.

[0027] In this embodiment, the mounting head 3 and the nozzles 4 are made of stainless steel.

[0028] Further, a clamping portion 2a is provided at the free end of the hose connecting portion 2, and the hose connecting portion 2 is connected to the hose and fixed by a hose clamp.

[0029] Working principle of the present invention:

[0030] During use, the hose connecting portion 2 is connected to an external high-pressure air pump through a hose, and high-pressure gas is provided by the high-pressure air pump. This gas is nitrogen, a protective gas, to prevent oxidation reactions of other gases at high temperatures. After shutdown, the zinc pot is moved away from below, and the purging device is inserted into the inner wall of the nose of the furnace through a reserved hole above the nose of the furnace and purged downward. The high-pressure gas in the nozzle 4 can purge the inner wall of the nose of the furnace comprehensively at one time, ensuring that every position can be cleaned. Continue purging until no metal ash falls from below, indicating that the cleaning is complete.

[0031] Based on the disclosure and teachings of the above specification, those skilled in the art of the present invention can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A high-pressure purging device for the inner wall of a furnace nose, characterized in that, It includes a main body (1), with a hose connection part (2) and a mounting head (3) respectively arranged at both ends of the main body (1). The hose connection part (2) is connected to a high-pressure air pump through a hose. A plurality of nozzles (4) are provided on the mounting head (3). The nozzles (4) are all inclined in the opposite direction of the hose connection part (2), and the inclination angles of the respective nozzles (4) are different.

2. The high-pressure purging device for the inner wall of a furnace nose according to claim 1, characterized in that, Both ends of the main body (1) and the hose connection part (2) and the mounting head (3) are threadedly connected and then fixed by welding.

3. The high-pressure purging device for the inner wall of a furnace nose according to claim 1, characterized in that, A nozzle (4) is arranged in the middle of the mounting head (3), and a plurality of nozzles (4) in a ring shape are arranged along the periphery of this nozzle (4).

4. The high-pressure purging device for the inner wall of a furnace nose according to claim 1 or 3, characterized in that, The nozzle (4) is fixed to the mounting head (3) by threaded connection plus welding.

5. The high-pressure purging device for the inner wall of the furnace nose according to claim 3, wherein The aperture of the nozzle (4) is 1.2 mm, the number of nozzles is 7, 1 is arranged in the middle, and they are evenly distributed on the periphery, and each nozzle (4) is inclined downward by 45°.

6. The high-pressure purging device for the inner wall of a furnace nose according to claim 1, characterized in that, The mounting head (3) and the nozzle (4) are made of stainless steel.

7. The high-pressure purging device for the inner wall of the furnace nose according to claim 1, characterized in that, A clamping part (2a) is provided at the free end of the hose connection part (2), and the hose connection part (2) is connected to the hose and fixed by a hoop.

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