Multi-hole type efficient oxygen supply oxygen lance

Abstract

The utility model relates to the technical field of converter smelting oxygen supply equipment, and discloses a porous efficient oxygen supply oxygen lance, which comprises an oxygen lance main body, a spray head, a sleeve seat I and a sleeve seat II, the end part of the oxygen lance main body is provided with a connecting disc, the end part of the spray head is provided with a positioning disc, the spray head is provided with a plurality of spray holes at intervals, and the sleeve seat I and the sleeve seat II are arranged on the connecting disc. Side grooves are formed in the side faces of the connecting disc and the positioning disc, limiting protruding blocks matched with the side grooves are arranged on the inner walls of the sleeve base I and the sleeve base II, the opposite end faces of the connecting disc and the positioning disc are in contact, a sliding groove I is formed in the front end face of the sleeve base I, a front sliding block is arranged at the front end of the sleeve base II and is in sliding connection with the sliding groove I, and the front sliding block is in sliding connection with the sliding groove II. According to the oxygen lance, the spray head can be conveniently disassembled and assembled, so that the spray head is more convenient to replace and process, and the later maintenance convenience of the oxygen lance is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of oxygen supply equipment for converter smelting, and more specifically, to a porous high-efficiency oxygen lance. Background Technology

[0002] Converter steelmaking uses molten iron, scrap steel, and ferroalloys as the main raw materials. Without the aid of external energy, the steelmaking process is completed in the converter by generating heat through the physical heat of the molten iron itself and the chemical reactions between the components of the molten iron. The oxygen lance is the key equipment in converter steelmaking, which provides efficient oxygen supply for converter smelting. The effect of the oxygen lance on blowing is achieved through the interaction between the oxygen jet stream and the molten pool.

[0003] A search revealed a converter water-cooled oxygen lance disclosed in Chinese Patent Publication No. CN209759498U. While this lance simplifies the structure and the improved single-layer cooling water circulation system enhances cooling intensity and efficiency, the welding connection between the Laval nozzle and the lower end of the oxygen lance's outer tube makes nozzle disassembly difficult, hindering nozzle replacement and impacting the ease of maintenance. Therefore, this invention designs a multi-hole, high-efficiency oxygen supply lance to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a multi-hole, high-efficiency oxygen lance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-hole high-efficiency oxygen lance includes an oxygen lance body, a nozzle, a sleeve I, and a sleeve II. The oxygen lance body has a connecting plate at one end, and the nozzle has a positioning plate at one end. The nozzle has several nozzle holes spaced apart. The connecting plate and the positioning plate have side grooves on their sides. The inner walls of sleeve I and sleeve II have limiting protrusions that match the side grooves. The connecting plate and the positioning plate have opposite end faces in contact. Sliding groove I is formed on the front end face of sleeve I. A front slider is formed on the front end face of sleeve II, and the front slider is slidably connected to sliding groove I. A first spring is fixedly connected between sleeve I and the front slider. Sliding groove II is formed on the rear end face of sleeve II, and a rear slider is formed on the rear end face of sleeve I, and the rear slider is slidably connected to sliding groove II. A second spring is fixedly connected between sleeve II and the rear slider.

[0007] As a preferred embodiment of this utility model, the lower end face of the connecting plate is provided with an outer sealing ring, and the upper end face of the positioning plate is provided with an outer groove at the position corresponding to the outer sealing ring.

[0008] As a preferred embodiment of this utility model, an inner sealing ring is provided on the upper end face of the positioning disk inside the outer groove, and an inner groove is provided on the lower end face of the connecting disk at the position corresponding to the inner sealing ring.

[0009] As a preferred embodiment of this utility model, the number of spray holes is eight, and the spray holes are evenly spaced on the nozzle.

[0010] As a preferred embodiment of this utility model, both sleeve I and sleeve II have semi-circular cross-sectional shapes, and the opposite end faces of sleeve I and sleeve II are in contact.

[0011] As a preferred embodiment of this utility model, both sleeve I and sleeve II are provided with pull blocks.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention uses a pull block to move sleeve I and sleeve II away from each other. The front slider slides outward along groove I, and the rear slider slides outward along groove II. The first and second springs are stretched, pressing the positioning plate at the nozzle end against the connecting plate at the end of the oxygen lance body. The outer sealing ring is fitted into the outer groove, and the inner sealing ring is fitted into the inner groove, ensuring the overall structural sealing. Releasing the pull block allows the first and second springs to reset the front and rear sliders, bringing sleeve I and sleeve II closer together. This allows the limiting protrusions on the inner walls of sleeve I and sleeve II to engage with the side grooves on the sides of the connecting plate and positioning plate, thus positioning and installing the nozzle on the connecting plate at the end of the oxygen lance body. This replaces the welding fastening method, facilitating nozzle disassembly and replacement, and improving the ease of maintenance of the oxygen lance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a multi-hole high-efficiency oxygen lance according to the present invention.

[0015] Figure 2 This is a partial cross-sectional view of the oxygen lance of the present invention, which is a multi-hole high-efficiency oxygen supply device.

[0016] Figure 3 This is a three-dimensional structural diagram of the nozzle in a multi-hole high-efficiency oxygen supply lance according to the present invention.

[0017] Figure 4 This is a cross-sectional view of the sleeve I and sleeve II in a multi-hole high-efficiency oxygen supply oxygen lance according to the present invention.

[0018] Figure 5 This is a bottom view of the nozzle structure of a multi-hole high-efficiency oxygen supply lance according to the present invention.

[0019] In the diagram: 1. Oxygen lance body; 2. Nozzle; 201. Nozzle hole; 3. Sleeve I; 301. Slide groove I; 302. First spring; 303. Rear slider; 4. Sleeve II; 401. Slide groove II; 402. Second spring; 403. Front slider; 5. Connecting plate; 501. Outer sealing ring; 502. Inner groove; 6. Positioning plate; 601. Outer groove; 602. Inner sealing ring; 7. Side groove; 8. Limiting protrusion; 9. Pull block. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 4 As shown, this utility model provides a multi-hole high-efficiency oxygen lance, including an oxygen lance body 1, a nozzle 2, a sleeve I3, and a sleeve II4. A connecting plate 5 is provided at the end of the oxygen lance body 1, and a positioning plate 6 is provided at the end of the nozzle 2. The nozzle 2 has a plurality of nozzle holes 201 spaced apart. Side grooves 7 are provided on the sides of both the connecting plate 5 and the positioning plate 6. Limiting protrusions 8 that match the side grooves 7 are provided on the inner walls of both the sleeve I3 and the sleeve II4. The opposite end faces of the connecting plate 5 and the positioning plate 6 are in contact. A sliding groove I301 is provided on the front end face of the sleeve II4. A front slider 403 is provided at the front end, and the front slider 403 is slidably connected to the slide groove I301. A first spring 302 is fixedly connected between the sleeve I3 and the front slider 403. The rear end face of the sleeve II4 is provided with a slide groove II401. A rear slider 303 is provided at the rear end of the sleeve I3, and the rear slider 303 is slidably connected to the slide groove II401. A second spring 402 is fixedly connected between the sleeve II4 and the rear slider 303. The first spring 302 and the second spring 402 are spring components with appropriate stiffness coefficients to ensure the stability of the sleeve I3 and the sleeve II4.

[0022] Among them, such as Figure 2 As shown, an outer sealing ring 501 is provided on the lower end face of the connecting plate 5, and an outer groove 601 is formed on the upper end face of the positioning plate 6 at the position corresponding to the outer sealing ring 501. The outer sealing ring 501 is fitted into the outer groove 601. An inner sealing ring 602 is provided on the upper end face of the positioning plate 6 inside the outer groove 601, and an inner groove 502 is formed on the lower end face of the connecting plate 5 at the position corresponding to the inner sealing ring 602. The inner sealing ring 602 is fitted into the inner groove 502, thus achieving the purpose of ensuring the overall structural sealing.

[0023] Among them, such as Figure 5 As shown, there are eight nozzles 201, which are evenly distributed on the nozzle 2 to facilitate the uniform injection of oxygen, promote full contact and reaction between the furnace charge and oxygen, and enable efficient oxidation of the metal in the molten pool.

[0024] Among them, such as Figure 4 As shown, the cross-sectional shape of both sleeve I3 and sleeve II4 is semi-circular, and the opposite end faces of sleeve I3 and sleeve II4 are in contact.

[0025] Among them, such as Figure 2 As shown, both sleeve I3 and sleeve II4 are equipped with pull blocks 9, which facilitates pulling sleeve I3 and sleeve II4 to move them away from each other.

[0026] The working principle of this utility model:

[0027] During use, if the nozzle 2 needs to be replaced, use the pull block 9 to pull the sleeve I3 and sleeve II4 away from each other, so that the limiting protrusion 8 disengages from the side groove 7, and the nozzle 2 can be removed for replacement. If the replaced nozzle 2 needs to be installed, use the pull block 9 to pull the sleeve I3 and sleeve II4 away from each other. The front slider 403 slides outward along the slide groove I301, and the rear slider 303 slides outward along the slide groove II401. The first spring 302 and the second spring 402 are stretched, and the positioning plate 6 at the end of the nozzle 2 abuts against the connecting plate 5 at the end of the oxygen gun body 1. The outer sealing ring 501 is fitted into the outer groove 601. The inner sealing ring 602 is fitted into the inner groove 502 to ensure the overall structure is sealed. When the pull block 9 is released, the first spring 302 and the second spring 402 can drive the front slider 403 and the rear slider 303 to reset. The sleeve I3 and the sleeve II4 come close to each other and fit together, so that the limiting protrusions 8 on the inner walls of the sleeve I3 and the sleeve II4 are correspondingly inserted into the side grooves 7 on the sides of the connecting plate 5 and the positioning plate 6, so that the nozzle 2 can be positioned and installed on the connecting plate 5 at the end of the oxygen gun body 1.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A porous, high-efficiency oxygen lance, characterized in that: It includes the oxygen lance body (1), nozzle (2), socket I (3) and socket II (4); The oxygen lance body (1) is provided with a connecting plate (5) at its end, the nozzle (2) is provided with a positioning plate (6) at its end, the nozzle (2) is provided with a plurality of spray holes (201) spaced apart, the connecting plate (5) and the positioning plate (6) are provided with side grooves (7) on their sides, and the inner walls of the sleeve I (3) and the sleeve II (4) are provided with limiting protrusions (8) that are adapted to the side grooves (7). The connecting plate (5) and the positioning plate (6) are in contact with each other. The front end face of the sleeve I (3) is provided with a sliding groove I (301). The front end of the sleeve II (4) is provided with a front slider (403). The front slider (403) is slidably connected to the sliding groove I (301). A first spring (302) is fixedly connected between the sleeve I (3) and the front slider (403). The rear end face of the sleeve II (4) is provided with a sliding groove II (401). The rear end of the sleeve I (3) is provided with a rear slider (303). The rear slider (303) is slidably connected to the sliding groove II (401). A second spring (402) is fixedly connected between the sleeve II (4) and the rear slider (303).

2. The porous high-efficiency oxygen lance according to claim 1, characterized in that: The lower end face of the connecting plate (5) is provided with an outer sealing ring (501), and the upper end face of the positioning plate (6) is provided with an outer groove (601) at the position corresponding to the outer sealing ring (501).

3. The porous high-efficiency oxygen lance according to claim 2, characterized in that: The upper end face of the positioning disk (6) is provided with an inner sealing ring (602) located inside the outer groove (601), and the lower end face of the connecting disk (5) is provided with an inner groove (502) at the position corresponding to the inner sealing ring (602).

4. The porous high-efficiency oxygen lance according to claim 1, characterized in that: The number of nozzles (201) is eight, and the nozzles (201) are evenly spaced on the nozzle (2).

5. The porous high-efficiency oxygen lance according to claim 1, characterized in that: Both sleeve I (3) and sleeve II (4) have semi-circular cross-sectional shapes, and the opposite end faces of sleeve I (3) and sleeve II (4) are in contact.

6. The porous high-efficiency oxygen lance according to claim 1, characterized in that: Pull blocks (9) are provided on both sleeve I (3) and sleeve II (4).

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