Weldless oxygen lance

Abstract

This utility model relates to the field of oxygen lance technology, specifically a seamless oxygen lance, comprising a lance body, a lance tail fixedly connected to the surface of the lance body, and a spray gun disposed at the end of the lance body away from the lance tail. A water inlet and a drain outlet are fixedly connected to the surface of the lance body. A protective mechanism is disposed on the surface of the spray gun, and an adjustment mechanism is disposed on the surface of the lance body. This utility model utilizes the telescopic action of a telescopic cylinder to allow a fixed rod to push and pull a second fixed block. Combined with a limiting rod, this allows the cover plate to move stably, enabling the opening of the cover plate and its obstruction of the spray gun. This achieves the effect of protecting the spray gun, making it less susceptible to the influence of dust and foreign objects, thus preventing clogging, extending the spray gun's lifespan, and ensuring safety and reliability for future use.

Description

Technical Field

[0001] This utility model relates to the field of oxygen lance technology, specifically a seamless oxygen lance. Background Technology

[0002] The oxygen lance is a core piece of equipment in oxygen converter steelmaking. Its core function is to blow high-pressure, high-purity oxygen at supersonic speeds (approximately Mach 2) above the molten metal pool inside the converter. The oxygen jet provides oxygen, stirs the molten pool, and promotes oxidation reactions, thus completing key steps in the steelmaking process such as decarburization, dephosphorization, and heating. The seamless oxygen lance is an improved design. Its core feature is that key components (such as the lance body steel pipe) are manufactured using a seamless process, employing seamless steel pipes or other welding-free joints, thereby improving the overall strength and durability of the oxygen lance.

[0003] In the prior art, when using an oxygen lance, the nozzle of a traditional oxygen lance is exposed when not in use. Because the nozzle cannot be well protected, it is susceptible to dust and foreign objects, which can lead to blockage. This is detrimental to extending the nozzle's lifespan and ensuring the safety and reliability of the next use. Therefore, in order to solve the above problems, a seamless oxygen lance is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a seamless oxygen lance to solve the problem mentioned in the background art, where the nozzle is susceptible to dust and foreign objects due to the inability to adequately protect it, leading to blockage and hindering the extension of nozzle life and the assurance of safety and reliability for future use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a weldless oxygen lance, comprising a lance body, a lance tail fixedly connected to the surface of the lance body, and a spray gun provided at the end of the lance body away from the lance tail; a water inlet fixedly connected to the surface of the lance body, and a drain outlet fixedly connected to the surface of the lance body. The surface of the spray gun is provided with a protective mechanism, and the surface of the gun body is provided with an adjustment mechanism; The protective mechanism includes a telescopic cylinder, which is installed on the top of the spray gun. A cover plate is provided on the surface of the spray gun, and a sealing block is fixedly connected to the inner surface of the cover plate. The sealing block is movable inside the spray gun. The adjustment mechanism includes a connecting pipe, which is fixedly connected to the surface of the gun body, and the spray gun moves inside the connecting pipe.

[0006] Preferably, the protective mechanism includes a fixing ring, which is fixedly connected to the surface of the spray gun, and a first fixing block is fixedly connected to the top of the fixing ring, and the telescopic cylinder is fixedly installed on the inner side of the first fixing block.

[0007] Preferably, the output end of the telescopic cylinder is fixedly connected to a fixing rod, and the end of the fixing rod away from the telescopic cylinder is fixedly connected to a second fixing block, and the cover plate and the second fixing block are fixedly connected.

[0008] Preferably, a limiting rod is fixedly connected to the inner surface of the cover plate, and the limiting rod is in two sets and fixed to the cover plate, with the limiting rod movable inside the fixing ring.

[0009] Preferably, the adjustment mechanism further includes a sealing gasket, which is fixedly connected to the inner wall of the connecting pipe, and the spray gun and the sealing gasket are movably connected, and a third fixing block is fixedly connected to the surface of the connecting pipe.

[0010] Preferably, the third fixing block is in two groups and fixedly connected to the connecting pipe, and a connecting rod is fixedly connected to the surface of the third fixing block. The connecting rod has a slot on its inner side, and the slots are evenly distributed on the inner side of the connecting rod.

[0011] Preferably, a connecting block is fixedly connected to the surface of the spray gun, and a bolt is threadedly connected to the inner side of the connecting block, wherein the bolt and the slot are movably connected.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The telescopic cylinder's extension and retraction allows the fixing rod to push and pull the second fixing block. Combined with the limit rod, this enables the cover plate to move stably, allowing it to open and cover the spray gun. This protects the spray gun from dust and foreign objects, preventing clogging, extending its lifespan, and ensuring safety and reliability for future use.

[0013] The connection of the connecting block and the connecting rod guides the movement of the spray gun within the connecting pipe, ensuring stable adjustment of the spray gun. The bolts and slots facilitate adjustment and fixation of the spray gun, allowing for extension of its length. This enhances the adaptability and flexibility of the oxygen lance in different furnace types or smelting stages. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is an exploded side view of the structure of this utility model; Figure 3 This is an exploded side view of the structure of the fixing ring and cover plate of this utility model; Figure 4 This is a top sectional view of the connecting pipe and spray gun structure of this utility model; Figure 5This is an exploded cross-sectional view of the connecting rod and bolt of this utility model.

[0015] In the diagram: 1. Gun body; 11. Gun tail; 12. Spray gun; 13. Water inlet; 14. Drain outlet; 2. Fixing ring; 21. First fixing block; 22. Telescopic cylinder; 23. Fixing rod; 24. Second fixing block; 25. Cover plate; 26. Sealing block; 27. Limiting rod; 3. Connecting pipe; 31. Sealing gasket; 32. Third fixing block; 33. Connecting rod; 34. Slot; 35. Connecting block; 36. Bolt. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5 One embodiment provided by this utility model: The telescopic cylinder 22 used in this application is a product that can be purchased directly from 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.

[0018] A seamless oxygen lance includes a lance body 1, a lance tail 11 fixedly connected to the surface of the lance body 1, and a spray gun 12 disposed at the end of the lance body 1 away from the lance tail 11. A water inlet 13 and a drain outlet 14 are fixedly connected to the surface of the lance body 1. A protective mechanism is disposed on the surface of the spray gun 12, and an adjustment mechanism is disposed on the surface of the lance body 1. The protective mechanism includes a telescopic cylinder 22 disposed on the top of the spray gun 12, and a cover plate 25 is disposed on the surface of the spray gun 12. A sealing block 26 is fixedly connected to the inner surface of the cover plate 25, and the sealing block 26 is movable inside the spray gun 12. The adjustment mechanism includes a connecting pipe 3, which is fixedly connected to the surface of the gun body 1, and the spray gun 12 is movable inside the connecting pipe 3. The gun body 1 and the gun tail 11 are configured to deliver oxygen, and the spray gun 12 can spray oxygen into the furnace at high speed. The water inlet 13 and the water outlet 14 are configured to allow cooling water to enter and exit, thereby preventing the oxygen gun from being damaged due to high temperature.

[0019] Furthermore, the protective mechanism includes a fixing ring 2, which is fixedly connected to the surface of the spray gun 12. A first fixing block 21 is fixedly connected to the top of the fixing ring 2. A telescopic cylinder 22 is fixedly installed inside the first fixing block 21. By retracting the telescopic cylinder 22, the fixing rod 23 can be pulled against the second fixing block 24, thereby enabling the cover plate 25 to move and cover the spray gun 12. This prevents the nozzle of the spray gun 12 from being exposed, thus preventing dust, moisture, and foreign objects from easily entering the spray gun 12 and preventing blockage of the spray gun 12, ensuring the use of the oxygen gun.

[0020] Furthermore, a fixing rod 23 is fixedly connected to the output end of the telescopic cylinder 22, and a second fixing block 24 is fixedly connected to the end of the fixing rod 23 away from the telescopic cylinder 22. The cover plate 25 is fixedly connected to the second fixing block 24. The telescopic cylinder 22 and the second fixing block 24 are connected by the fixing rod 23, so that when the telescopic cylinder 22 extends or retracts, the fixing rod 23 can drive the second fixing block 24 and the cover plate 25 to move, thereby facilitating the opening of the cover plate 25 or the sealing of the spray gun 12 by the cover plate 25, so that the cover plate 25 can protect the spray gun 12 when it is not in use.

[0021] Furthermore, a limiting rod 27 is fixedly connected to the inner surface of the cover plate 25, and the limiting rod 27 is in two sets and fixed to the cover plate 25. The limiting rod 27 moves inside the fixing ring 2. By moving the limiting rod 27 inside the fixing ring 2, the movement of the cover plate 25 can be limited, which can ensure the stability of the cover plate 25 driving the sealing block 26 to move, thereby ensuring the cover plate 25 covers the spray gun 12.

[0022] Furthermore, the adjustment mechanism also includes a sealing gasket 31, which is fixedly connected to the inner wall of the connecting pipe 3, and the spray gun 12 is movably connected to the sealing gasket 31. A third fixing block 32 is fixedly connected to the surface of the connecting pipe 3. By setting the sealing gasket 31, a sealed connection between the connecting pipe 3 and the spray gun 12 can be achieved, thereby preventing oxygen leakage.

[0023] Furthermore, the third fixing block 32 is fixedly connected to the connecting pipe 3 in two groups, and a connecting rod 33 is fixedly connected to the surface of the third fixing block 32. The inner side of the connecting rod 33 is provided with a slot 34, and the slots 34 are evenly distributed on the inner side of the connecting rod 33. By opening the slots 34, the bolt 36 and different slots 34 can be inserted and separated, which makes it easy to fix the spray gun 12 in the required position, thereby realizing the adjustment of the spray gun 12 to different lengths, which can improve the flexibility and versatility of the oxygen gun.

[0024] Furthermore, a connecting block 35 is fixedly connected to the surface of the spray gun 12, and a bolt 36 is threadedly connected to the inner side of the connecting block 35. The bolt 36 and the slot 34 are movably connected. By setting the bolt 36, rotating the bolt 36 can realize the insertion and separation of the bolt 36 and the slot 34, thereby facilitating the adjustment and fixation of the spray gun 12.

[0025] Working principle: During use, the telescopic cylinder 22 is electrically connected to an external power source. The operator starts the telescopic cylinder 22 by pressing the switch. The telescopic cylinder 22 extends and retracts, causing the fixed rod 23 to move. This pushes and pulls the fixed rod 23 against the second fixed block 24. Consequently, the cover plate 25 moves under the action of the second fixed block 24, which in turn moves the sealing block 26. This allows the limiting rod 27 to move inside the fixed ring 2. Through the movement of the cover plate 25 and the sealing block 26, the cover plate 25 covers the spray gun 12 and the sealing block 26 enters the spray gun 12, thus sealing the spray gun 12 and providing protection. The cover plate 25 moves the sealing block 26 to remove the cover from the spray gun 12, allowing the spray gun 12 to be used. This allows oxygen to be sprayed out, and the oxygen sprayed out comes into contact with the cover plate 25 and the sealing block 26, resulting in better dispersion. Rotate bolt 36 to allow it to move inside the connecting block 35 and separate from the slot 34, thus releasing the fixation on the connecting rod 33. Then pull the spray gun 12 to allow it to move inside the connecting pipe 3 and the sealing gasket 31, and to allow the connecting rod 33 to move inside the connecting block 35, thereby adjusting the length of the spray gun 12. After adjusting to the required length, rotate bolt 36 to allow bolt 36 to engage with the corresponding slot 34, thus limiting the connection rod 33 and fixing the length of the spray gun 12. At the same time, the sealing gasket 31 plays a sealing role during the adjustment process.

[0026] The above are merely preferred embodiments of this utility model and are 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 description above. However, any modifications, alterations, or 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 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 weldless oxygen lance, comprising a lance body (1), a lance tail (11) fixedly connected to the surface of the lance body (1), and a spray gun (12) provided at one end of the lance body (1) away from the lance tail (11), a water inlet (13) fixedly connected to the surface of the lance body (1), and a drain outlet (14) fixedly connected to the surface of the lance body (1). Its features are, The surface of the spray gun (12) is provided with a protective mechanism, and the surface of the gun body (1) is provided with an adjustment mechanism; The protective mechanism includes a telescopic cylinder (22), which is located on the top of the spray gun (12), and a cover plate (25) is provided on the surface of the spray gun (12). A sealing block (26) is fixedly connected to the inner surface of the cover plate (25), and the sealing block (26) is movable inside the spray gun (12). The adjustment mechanism includes a connecting pipe (3), which is fixedly connected to the surface of the gun body (1), and the spray gun (12) moves inside the connecting pipe (3).

2. The seamless oxygen lance according to claim 1, characterized in that: The protective mechanism includes a fixing ring (2), which is fixedly connected to the surface of the spray gun (12), and a first fixing block (21) is fixedly connected to the top of the fixing ring (2), and the telescopic cylinder (22) is fixedly installed on the inner side of the first fixing block (21).

3. The seamless oxygen lance according to claim 2, characterized in that: The output end of the telescopic cylinder (22) is fixedly connected to a fixing rod (23), and the end of the fixing rod (23) away from the telescopic cylinder (22) is fixedly connected to a second fixing block (24), and the cover plate (25) and the second fixing block (24) are fixedly connected.

4. The seamless oxygen lance according to claim 3, characterized in that: The inner surface of the cover plate (25) is fixedly connected with a limiting rod (27), and the limiting rod (27) is in two sets and fixed to the cover plate (25). The limiting rod (27) moves inside the fixing ring (2).

5. The seamless oxygen lance according to claim 1, characterized in that: The adjustment mechanism also includes a sealing gasket (31), which is fixedly connected to the inner wall of the connecting pipe (3), and the spray gun (12) and the sealing gasket (31) are movably connected. A third fixing block (32) is fixedly connected to the surface of the connecting pipe (3).

6. The seamless oxygen lance according to claim 5, characterized in that: The third fixing block (32) is fixedly connected to the connecting pipe (3) in two groups, and a connecting rod (33) is fixedly connected to the surface of the third fixing block (32). The connecting rod (33) has a slot (34) on its inner side, and the slots (34) are evenly distributed on the inner side of the connecting rod (33).

7. A seamless oxygen lance according to claim 6, characterized in that: The surface of the spray gun (12) is fixedly connected to a connecting block (35), and the inner side of the connecting block (35) is threaded with a bolt (36), and the bolt (36) and the slot (34) are movably connected.

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