High-pressure purging device for inner wall of furnace nose

Abstract

The utility model discloses a furnace nose inner wall high-pressure purging device which comprises a body, a hose connecting part and an installation 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 installation head and are obliquely arranged in the opposite direction of the hose connecting part, and the nozzles are connected with the high-pressure air pump. And the inclination angles of the nozzles are different. According to the blowing device disclosed by the utility model, 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 manner at one time, the problem that dead angles are not cleaned thoroughly is avoided, meanwhile, the cleaning efficiency is also improved, and the product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of galvanizing / aluminum production technology, specifically to a high-pressure purging device for the inner wall of a furnace nose. Background Technology

[0002] In continuous hot-dip galvanizing / aluminizing production lines, due to the special nature of the process, high-temperature molten metal (e.g., zinc molten metal 450℃ / aluminum molten metal 650℃) needs to be coated onto the surface of a high-temperature iron substrate (400-700℃). A sealed furnace nose is required between the substrate heating furnace and the zinc / aluminum pot where the coating metal is dissolved. The end of the furnace nose is immersed in the zinc pot to ensure air isolation and guarantee coating quality. Due to the evaporation of the high-temperature molten metal, a large amount of metal (zinc / aluminum) adheres to the inner wall of the furnace nose. In continuous production, especially for products with high-grade surface finish requirements, this metal dust falling onto the substrate will create defects, leading to substandard coated products. Therefore, thorough cleaning of the inside of the furnace nose can significantly reduce the degradation caused by this defect. This location is a high-temperature environment (zinc plating temperature around 470℃, aluminized silicon plating temperature around 660℃). Cleaning in this area must be done carefully to avoid blowing this metal dust into the heating furnace and contaminating the furnace environment, while also ensuring that the internal structure and related components are not damaged during cleaning. Because the upper part of the furnace nose is a sealed structure, a small hole is usually reserved at the upper part for cleaning. The existing cleaning technology relies on a pipe that is manually inserted into the small hole and moved to change position randomly for cleaning. This cannot guarantee that all areas are cleaned. At the same time, the pipe diameter is large and cannot achieve thorough cleaning. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a high-pressure purging device for the inner wall of the furnace nose, which solves the problem that the inner wall of the furnace nose is not thoroughly cleaned in the existing technology, and metal ash is easily shed onto the substrate, causing product defects.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

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

[0006] By adopting the above structural design and setting multiple nozzles at different angles on the mounting head, the inner wall of the furnace nose can be cleaned from different angles at the same time, avoiding the problem of dead corners that cannot be cleaned.

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

[0008] The above structural design facilitates installation through threaded connections, and after installation, it is fixed by welding to ensure that it will not fall off during high-pressure purging.

[0009] Preferably, the mounting head has a nozzle in the middle, and a plurality of nozzles arranged in a ring around the periphery of the nozzle.

[0010] Preferably, the nozzle is fixed to the mounting head by a threaded connection and welding.

[0011] Preferably, the nozzle has an orifice diameter of 1.2 mm, and there are 7 nozzles, with 1 nozzle in the center and the others evenly distributed around the periphery, and each nozzle is tilted downward at 45°.

[0012] The above structural design not only ensures thorough cleaning without any blind spots, but also ensures that the metal ash falls uniformly downwards when blown from above the furnace nose.

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

[0014] Preferably, the free end of the hose connector is provided with a retaining part, and the hose connector is connected to the hose and fixed by a clamp.

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

[0016] The purging device of this utility model has multiple nozzles at different angles on the mounting head. Therefore, when cleaning the inside of the furnace nose, it can perform a one-time circumferential purging and cleaning of the inner wall of the furnace nose, avoiding the problem of dead corners not being cleaned. At the same time, it also improves cleaning efficiency and ensures product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the structure of the mounting head.

[0019] In the picture:

[0020] 1. Body, 2. Hose connection, 2a. Clamping part, 3. Mounting head, 4. Nozzle. Detailed Implementation

[0021] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] The technical solution 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, not all embodiments. 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. 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0023] Please see 1 and Figure 2 A high-pressure purging device for the inner wall of a furnace nose includes a main body 1. Both ends of the main body 1 are respectively provided with a hose connection 2 and a mounting head 3. The hose connection 2 is connected to a high-pressure air pump via a hose, which provides high-pressure gas. The mounting head 3 is provided with several nozzles 4, each nozzle 4 being inclined in the opposite direction to the hose connection 2, and each nozzle 4 having a different inclination angle. Because the nozzles 4 are set at multiple angles, when cleaning from the inside of the furnace nose, a circumferential cleaning of the inner wall can be achieved in one go. Compared to the prior art, which uses a single nozzle for cleaning, requiring repeated cleaning of different locations, and relying entirely on manual experience for cleaning due to the inconvenience of observing the inner wall of the furnace nose, thus easily resulting in incomplete cleaning of the inner wall.

[0024] Specifically as follows:

[0025] The two ends of the main body 1 are connected to the hose connection part 2 and the mounting head 3 by threads and then fixed by welding, so that it can be guaranteed that it will not fall off under high pressure.

[0026] A nozzle 4 is disposed in the center of the mounting head 3, and multiple nozzles 4 arranged in a ring around the periphery of the nozzle 4. The nozzles 4 are fixed to the mounting head 3 by threaded connection and welding. In this embodiment, the orifice diameter of the nozzle 4 is 1.2 mm, which, by relatively reducing the orifice diameter, allows for further pressurization. There are 7 nozzles 4, one in the center and evenly distributed around the periphery, with adjacent nozzles 4 spaced at 60° intervals, and each nozzle 4 tilted downwards at 45°. In this embodiment, the side of the mounting head 3 used for mounting the nozzles 4 is designed with a tapered structure to facilitate the installation of the tilted nozzles 4.

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

[0028] Furthermore, the free end of the hose connection 2 is provided with a retaining part 2a, and the hose connection 2 is connected to the hose and fixed by a clamp.

[0029] Working principle of this utility model:

[0030] During use, connect hose connector 2 to an external high-pressure air pump via a hose. The high-pressure air pump provides high-pressure gas, specifically nitrogen, as a protective gas to prevent oxidation reactions with other gases at high temperatures. After shutdown, remove the zinc pot from below and insert the purging device through the pre-drilled hole above the furnace nose to blow downwards along the inner wall of the furnace nose. The high-pressure gas in nozzle 4 can thoroughly purge the inner wall of the furnace nose in one go, ensuring that every area is cleaned. Continue purging until no more metal dust falls from below, indicating that the furnace nose is clean.

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

Claims

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

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

3. The high-pressure purging device for the inner wall of the furnace nose as described in claim 1, characterized in that, The mounting head (3) has a nozzle (4) in the middle, and a plurality of nozzles (4) arranged in a ring around the periphery of the nozzle (4).

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

5. The high-pressure purging device for the inner wall of the furnace nose as described in claim 3, characterized in that, The nozzle (4) has an aperture of 1.2 mm and a total of 7 nozzles, with one nozzle in the center and the others evenly distributed around the periphery. Each nozzle (4) is tilted downward at 45°.

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

7. The high-pressure purging device for the inner wall of the furnace nose as described in claim 1, characterized in that, The free end of the hose connection part (2) is provided with a retaining part (2a), and the hose connection part (2) is connected to the hose and fixed by a clamp.

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