A lance for a melting converter

Abstract

This utility model relates to the field of spray gun technology, specifically a spray gun for a melting converter. The utility model includes a fixing device, within which a gun body is fixedly connected. An air inlet pipe, a water inlet pipe, and a water outlet pipe are installed on the inner wall of the gun body. A limiting structure is provided on the surface of the gun body, including a fixing frame. The fixing frame is fixedly connected to the gun body. A fixing plate is fixedly connected to one side of the fixing frame. A connecting groove is formed on the inner wall of the fixing plate. A connecting block is slidably connected to the inner wall of the connecting groove. A connecting plate is fixedly connected to the side of the connecting block away from the fixing frame. A mounting plate is fixedly connected to the lower surface of the connecting plate. This invention solves the problem that because personnel cannot accurately control the length of the air inlet pipe, water inlet pipe, and water outlet pipe, these pipes are placed too close to the melting converter, causing damage to their surfaces due to furnace temperature.

Description

Technical Field

[0001] This utility model relates to the field of spray gun technology, and in particular to a spray gun for a melting converter. Background Technology

[0002] A spray gun consists of an air inlet pipe, a water inlet pipe, a water outlet pipe, and a fixing device. It is mainly used to inject oxygen into a melting converter and is quite common in existing technology.

[0003] In existing technology, after the personnel connect the air inlet pipe, water inlet pipe, and water outlet pipe, they directly use a spray gun to inject oxygen into the melting converter. As the personnel operate the gun to insert into the melting converter for oxygen injection, the air inlet pipe, water inlet pipe, and water outlet pipe will also move downwards along with the gun. Therefore, the personnel need to leave enough length in advance to ensure that the air inlet pipe, water inlet pipe, and water outlet pipe can move with the gun. Since the personnel cannot accurately control the length of the air inlet pipe, water inlet pipe, and water outlet pipe, the air inlet pipe, water inlet pipe, and water outlet pipe will be too close to the melting converter, resulting in the furnace temperature damaging the surface of the air inlet pipe, water inlet pipe, and water outlet pipe. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where the lengths of the air inlet pipe, water inlet pipe, and water outlet pipe cannot be accurately controlled by personnel, resulting in the air inlet pipe, water inlet pipe, and water outlet pipe being too close to the melting converter, causing damage to the surface of the air inlet pipe, water inlet pipe, and water outlet pipe due to furnace temperature. Therefore, this invention proposes a spray gun for melting converters.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a spray gun for a melting converter, comprising a fixing device, wherein a gun body is fixedly connected inside the fixing device, an air inlet pipe, a water inlet pipe, and a water outlet pipe are installed on the inner wall of the gun body, a limiting structure is provided on the surface of the gun body, the limiting structure comprising a fixing frame, the fixing frame being fixedly connected to the gun body, a fixing plate being fixedly connected to one side of the fixing frame, a connecting groove being formed on the inner wall of the fixing plate, a connecting block being slidably connected to the inner wall of the connecting groove, a connecting plate being fixedly connected to the side of the connecting block away from the fixing frame, an mounting plate being fixedly connected to the lower surface of the connecting plate, a limiting groove being formed on the inner wall of the mounting plate, a moving block being slidably connected to the inner wall of the limiting groove, and a threaded connection being made to the inner wall of the moving block. The rod, the lead screw is rotatably connected to the limiting groove, the lead screw is rotatably connected to the mounting plate, the inner wall of the moving block is rotatably connected to the connecting rod, the arc surface of the connecting rod is fixedly connected to the connecting plate, the side of the fixing plate away from the fixing frame is fixedly connected to the fixing block, the inner wall of the fixing block is rotatably connected to the rotating rod, the rotating rod is fixedly connected to the connecting plate, the upper surface of the connecting plate is fixedly connected to the limiting plate, one side of the limiting plate is fixedly connected to the positioning block, one side of the positioning block is fixedly connected to the connecting rod, the end of the connecting rod away from the positioning block is rotatably connected to the rotating block, the side of the rotating block near the limiting plate is fixedly connected to the pressing plate, the inner wall of the pressing plate is threadedly connected to the threaded rod, the upper end of the threaded rod is fixedly connected to the rotating column, and the threaded rod is threadedly connected to the limiting plate.

[0006] The effect achieved by the above components is as follows: by setting a limiting structure, when oxygen needs to be injected into the converter, the personnel can first place the air inlet pipe, water inlet pipe and water outlet pipe between the extrusion plates to limit them, and then move the connecting plate upward by rotating the screw. This can prevent the air inlet pipe, water inlet pipe and water outlet pipe from being too close to the converter and causing damage to them.

[0007] Preferably, a limiting rod is fixedly connected to the inner wall of the connecting groove, and the limiting rod is slidably connected to the connecting block.

[0008] The effect achieved by the above components is that the limiting rod can limit the connecting block and prevent the connecting block from becoming misaligned when it slides on the inner wall of the connecting groove.

[0009] Preferably, an auxiliary rod is fixedly connected to the inner wall of the lead screw, and the cross-section of the auxiliary rod is circular.

[0010] The effect achieved by the above components is that the auxiliary rod makes it easier for personnel to rotate the lead screw, thereby improving the ease of operation.

[0011] Preferably, the arc surface of the rotating column is provided with a plurality of anti-slip grooves, and the plurality of anti-slip grooves are evenly provided on the arc surface of the rotating column.

[0012] The effect achieved by the above components is that the anti-slip groove can increase the friction between the personnel's hands and the rotating column, and can prevent the personnel from slipping when rotating the rotating column.

[0013] Preferably, three protective pads are fixedly connected to the side of the extrusion plate near the limiting plate, and the three protective pads respectively abut against the air inlet pipe, the water inlet pipe and the water outlet pipe.

[0014] The effect achieved by the above components is that the protective pad can protect the air inlet pipe, water inlet pipe, and water outlet pipe, and can prevent the extrusion plate from directly contacting the air inlet pipe, water inlet pipe, and water outlet pipe.

[0015] Preferably, the surface of the gun body is provided with an auxiliary structure, the auxiliary structure including a fixing ring, the fixing ring being fixedly connected to the gun body, the inner wall of the fixing ring having two auxiliary grooves, the inner wall of the auxiliary grooves being slidably connected to connecting blocks, adjusting plates being fixedly connected to the sides of the two connecting blocks that are far apart from each other, a positioning plate being fixedly connected to the lower surface of the adjusting plate, a spring being provided between the side of the connecting block away from the positioning plate and the auxiliary groove, the two ends of the spring being fixedly connected to the connecting block and the auxiliary groove respectively, and the positioning plate being slidably connected to the gun body.

[0016] The effect achieved by the above components is as follows: by setting up an auxiliary structure, when the operator inserts the gun into the converter to inject oxygen, the positioning plate will abut against the furnace wall of the converter during the insertion process, thereby reducing gas leakage during the oxygen injection process.

[0017] Preferably, a positioning rod is fixedly connected to the inner wall of the auxiliary groove, and the positioning rod is slidably connected to the connecting block.

[0018] The effect achieved by the above components is that the positioning rod can limit the compression spring and prevent the compression spring from deforming during the contraction process.

[0019] Preferably, the positioning plate is a stainless steel plate.

[0020] The effect achieved by the above components is that the stainless steel plate has high strength and good high temperature resistance, and is not likely to cause significant damage to the positioning plate during short-term use.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] In this invention, when oxygen needs to be injected into the converter, personnel can first place the air inlet pipe, water inlet pipe, and water outlet pipe on the limiting plate. Then, personnel rotate the extrusion plate, causing it to move closer to the air inlet pipe. The extrusion plate drives three protective pads, a rotating block, and a threaded rod to rotate closer to the air inlet pipe. The threaded rod drives a rotating column to rotate closer to the air inlet pipe until the three protective pads are pressed against the air inlet pipe, water inlet pipe, and water outlet pipe respectively. The protective pads protect the air inlet pipe, water inlet pipe, and water outlet pipe, preventing direct contact between the extrusion plate and these pipes. Then, personnel rotate the rotating column, causing the threaded rod to rotate and enter the inner wall of the extrusion plate. At this point, personnel use an auxiliary rod to rotate the lead screw. The auxiliary rod facilitates the rotation of the lead screw, improving operational convenience. Finally, the lead screw drives a moving block to move closer to the fixed plate. The moving connecting rod moves and rotates towards the fixed plate, causing the connecting plate to rotate towards the fixed plate. The connecting plate then rotates the rotating rod. As the moving block moves towards the fixed plate, it causes the mounting plate to move upward. The mounting plate then causes the connecting plate to move upward, which in turn causes the limiting plate and connecting block to move upward. The connecting block slides on the arc surface of the limiting rod, which limits the connecting block and prevents it from misaligning when sliding on the inner wall of the connecting groove. Once it reaches the appropriate position, the rotation of the auxiliary rod stops. The anti-slip groove on the arc surface of the rotating column increases the friction between the operator's hand and the rotating column, preventing slippage during rotation. By setting the limiting structure, the movement of the air inlet pipe, water inlet pipe, and water outlet pipe is limited, thus preventing them from getting too close to the melting converter and causing damage.

[0023] In this invention, when personnel insert the nozzle into the oxygen injection port on the converter surface to inject oxygen, the positioning plate abuts against the converter surface during insertion. The nozzle then moves the fixing ring closer to the oxygen injection port, which in turn moves the positioning rod closer to the port. At this time, the connecting block slides on the arc surface of the positioning rod, causing the spring to contract during this sliding motion until the nozzle is inserted into the oxygen injection position inside the converter. Personnel can then control the nozzle to inject oxygen. By setting up an auxiliary structure, the gap created by inserting the nozzle into the oxygen injection port is blocked, thereby increasing the converter's airtightness and preventing excessive oxygen leakage. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the limiting structure of this utility model;

[0026] Figure 3 This utility model Figure 1 Partial structural diagram;

[0027] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0028] Figure 5 This is a schematic diagram of the auxiliary structure of this utility model.

[0029] Legend: 1. Gun body; 2. Air inlet pipe; 3. Limiting structure; 301. Fixing bracket; 302. Fixing plate; 303. Fixing block; 304. Rotating rod; 305. Connecting plate; 306. Connecting rod; 307. Moving block; 308. Lead screw; 309. Auxiliary rod; 310. Limiting groove; 311. Connecting plate; 312. Limiting plate; 313. Connecting groove; 314. Connecting block; 315. Limiting rod; 16. Positioning block; 317. Connecting rod; 318. Rotating block; 319. Extrusion plate; 320. Protective pad; 321. Threaded rod; 322. Rotating column; 323. Anti-slip groove; 324. Mounting plate; 4. Auxiliary structure; 41. Fixing ring; 42. Auxiliary groove; 43. Positioning rod; 44. Spring; 45. Connecting block; 46. Adjusting plate; 47. Positioning plate; 5. Inlet pipe; 6. Outlet pipe; 7. Fixing device. Detailed Implementation

[0030] Reference Figure 1 As shown, this utility model provides a technical solution: a spray gun for a melting converter, including a fixing device 7, a gun body 1 fixedly connected inside the fixing device 7, an air inlet pipe 2, a water inlet pipe 5 and a water outlet pipe 6 installed on the inner wall of the gun body 1, a limiting structure 3 provided on the surface of the gun body 1, and an auxiliary structure 4 provided on the surface of the gun body 1.

[0031] The specific settings and functions of its limiting structure 3 and auxiliary structure 4 will be discussed below.

[0032] Reference Figure 2 and Figure 4As shown in this embodiment: the limiting structure 3 includes a fixing frame 301, which is fixedly connected to the gun body 1. A fixing plate 302 is fixedly connected to one side of the fixing frame 301. A connecting groove 313 is provided on the inner wall of the fixing plate 302. A connecting block 314 is slidably connected to the inner wall of the connecting groove 313. A connecting plate 311 is fixedly connected to the side of the connecting block 314 away from the fixing frame 301. A mounting plate 324 is fixedly connected to the lower surface of the connecting plate 311. A limiting groove 310 is provided on the inner wall of the mounting plate 324. A moving block 307 is slidably connected to the inner wall of the limiting groove 310. A lead screw 308 is threadedly connected to the inner wall of the moving block 307. The lead screw 308 is rotatably connected to the limiting groove 310 and to the mounting plate 324. A connecting rod 306 is rotatably connected to the inner wall of the movable block 307. A connecting plate 305 is fixedly connected to the arc surface of the connecting rod 306. A fixing block 303 is fixedly connected to the side of the fixing plate 302 away from the fixing frame 301. A rotating rod 304 is rotatably connected to the inner wall of the fixing block 303. The rotating rod 304 is fixedly connected to the connecting plate 305. A limit plate 312 is fixedly connected to the upper surface of the connecting plate 311. A positioning block 316 is fixedly connected to one side of the limit plate 312. A connecting rod 317 is fixedly connected to one side of the positioning block 316. A rotating block 318 is rotatably connected to the end of the connecting rod 317 away from the positioning block 316. A pressing plate 319 is fixedly connected to the side of the rotating block 318 near the limit plate 312. A threaded rod is threadedly connected to the inner wall of the pressing plate 319. 321. A rotating column 322 is fixedly connected to the upper end of the threaded rod 321. The threaded rod 321 is threadedly connected to the limiting plate 312. By setting the limiting structure 3, when oxygen needs to be injected into the converter, personnel can first place the air inlet pipe 2, water inlet pipe 5, and water outlet pipe 6 between the extrusion plate 319 to limit them. Then, by rotating the screw 308, the connecting plate 311 is moved upward, thereby preventing the air inlet pipe 2, water inlet pipe 5, and water outlet pipe 6 from being too close to the converter and causing damage. A limiting rod 315 is fixedly connected to the inner wall of the connecting groove 313. The limiting rod 315 is slidably connected to the connecting block 314. The limiting rod 315 can limit the connecting block 314 and prevent the connecting block 314 from being... When the inner wall of the connecting groove 313 slides, misalignment occurs. An auxiliary rod 309 is fixedly connected to the inner wall of the lead screw 308. The auxiliary rod 309 has a circular cross-section, which facilitates the rotation of the lead screw 308 and improves the ease of operation. Several anti-slip grooves 323 are evenly distributed on the arc surface of the rotating column 322. The anti-slip grooves 323 increase the friction between the operator's hand and the rotating column 322, preventing slippage when rotating the rotating column 322. Three protective pads 320 are fixedly connected to the side of the extrusion plate 319 near the limiting plate 312. The three protective pads 320 respectively abut against the air inlet pipe 2, the water inlet pipe 5, and the water outlet pipe 6.The protective pad 320 protects the air inlet pipe 2, water inlet pipe 5, and water outlet pipe 6, preventing direct contact between the extrusion plate 319 and these pipes.

[0033] Reference Figure 5 As shown in this embodiment: the auxiliary structure 4 includes a fixing ring 41, which is fixedly connected to the gun body 1. Two auxiliary grooves 42 are formed on the inner wall of the fixing ring 41. Connecting blocks 45 are slidably connected to the inner walls of the auxiliary grooves 42. Adjusting plates 46 are fixedly connected to the sides of the two connecting blocks 45 that are away from each other. A positioning plate 47 is fixedly connected to the lower surface of the adjusting plate 46. A spring 44 is provided between the side of the connecting block 45 away from the positioning plate 47 and the auxiliary groove 42. The two ends of the spring 44 are fixedly connected to the connecting block 45 and the auxiliary groove 42 respectively. The positioning plate 47 is slidably connected to the gun body 1. An auxiliary structure 4 is provided so that when the operator inserts the gun body 1 into the converter for oxygen injection, the positioning plate 47 will abut against the converter wall during the insertion process, thereby reducing gas leakage during oxygen injection. A positioning rod 43 is fixedly connected to the inner wall of the auxiliary groove 42. The positioning rod 43 is slidably connected to the connecting block 45. The positioning rod 43 can limit the compression spring and prevent the compression spring from deforming during the contraction process. The positioning plate 47 is made of stainless steel plate. Stainless steel plate has high strength and good high temperature resistance, and is not easy to cause great damage to the positioning plate 47 during short-term use.

[0034] Working principle: When oxygen needs to be injected into the converter, personnel first place the air inlet pipe 2, water inlet pipe 5, and water outlet pipe 6 on the limiting plate 312. Then, personnel rotate the extrusion plate 319, causing it to move closer to the air inlet pipe 2. The extrusion plate 319 drives the three protective pads 320, the rotating block 318, and the threaded rod 321 to rotate closer to the air inlet pipe 2. The threaded rod 321 drives the rotating column 322 to rotate closer to the air inlet pipe 2 until the three protective pads 320 are pressed against the air inlet pipe 2, water inlet pipe 5, and water outlet pipe 6 respectively. The protective pads 320 can play a role in protecting the air inlet pipe 2. The protective effect of the air inlet pipe 2, water inlet pipe 5, and water outlet pipe 6 prevents direct contact between the extrusion plate 319 and these pipes. Then, the operator rotates the rotating column 322, which drives the threaded rod 321 to rotate, causing the threaded rod 321 to rotate into the inner wall of the extrusion plate 319. At this point, the operator uses the auxiliary rod 309 to rotate the lead screw 308. The auxiliary rod 309 facilitates the rotation of the lead screw 308, improving operational convenience. Then, the lead screw 308 drives the moving block 307 to move closer to the fixed plate 302. The moving connecting rod 306 moves and rotates towards the fixed plate 302, causing the connecting plate 305 to rotate towards the fixed plate 302. The connecting plate 305 then rotates the rotating rod 304. As the moving block 307 moves towards the fixed plate 302, it causes the mounting plate 324 to move upward. The mounting plate 324 then causes the connecting plate 311 to move upward. The connecting plate 311 then causes the limiting plate 312 and the connecting block 314 to move upward. The connecting block 314 slides on the arc surface of the limiting rod 315, whereby the limiting rod 315 can move the connecting block 314. The limit switch prevents the connecting block 314 from misaligning when sliding on the inner wall of the connecting groove 313. When it rises to the appropriate position, the rotation of the auxiliary rod 309 stops. The anti-slip groove 323 on the arc surface of the rotating column 322 increases the friction between the personnel's hands and the rotating column 322, preventing the personnel from slipping when rotating the rotating column 322. By setting the limit structure 3, the movement of the air inlet pipe 2, water inlet pipe 5 and water outlet pipe 6 is limited, thereby preventing the air inlet pipe 2, water inlet pipe 5 and water outlet pipe 6 from getting too close to the melting converter and causing damage to the air inlet pipe 2, water inlet pipe 5 and water outlet pipe 6.

[0035] In addition, when the personnel insert the gun body 1 into the oxygen injection port on the surface of the converter to inject oxygen, during the insertion process, the positioning plate 47 will abut against the surface of the converter. Then, the gun body 1 will also drive the fixing ring 41 to move closer to the oxygen injection port. The fixing ring 41 will drive the positioning rod 43 to move closer to the oxygen injection port. At this time, the connecting block 45 will slide on the arc surface of the positioning rod 43. During the sliding process, the connecting block 45 will drive the spring 44 to contract until the gun body 1 is inserted into the oxygen injection position inside the converter. At this time, the personnel can start to control the spray gun to inject oxygen. By setting the auxiliary structure 4, the gap generated by the insertion of the gun body 1 into the oxygen injection port is blocked, thereby increasing the airtightness of the converter and preventing excessive oxygen leakage.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A spray gun for a melting converter, comprising a fixing device (7), characterized in that: The gun body (1) is fixedly connected inside the fixing device (7). The inner wall of the gun body (1) is equipped with an air inlet pipe (2), a water inlet pipe (5), and a water outlet pipe (6). The surface of the gun body (1) is provided with a limiting structure (3). The limiting structure (3) includes a fixing frame (301). The fixing frame (301) is fixedly connected to the gun body (1). A fixing plate (302) is fixedly connected to one side of the fixing frame (301). A connecting groove (313) is opened on the inner wall of the fixing plate (302). A connecting groove (313) is slidably connected to the inner wall of the connecting groove (313). A connecting block (314) is fixedly connected to a connecting plate (311) on the side of the connecting block (314) away from the fixing frame (301). A mounting plate (324) is fixedly connected to the lower surface of the connecting plate (311). A limiting groove (310) is formed on the inner wall of the mounting plate (324). A moving block (307) is slidably connected to the inner wall of the limiting groove (310). A lead screw (308) is threadedly connected to the inner wall of the moving block (307). The lead screw (308) is rotatably connected to the limiting groove (310). The lead screw (308) is connected to the mounting plate (311). 24) Rotatable connection: A connecting rod (306) is rotatably connected to the inner wall of the movable block (307). A connecting plate (305) is fixedly connected to the arc surface of the connecting rod (306). A fixing block (303) is fixedly connected to the side of the fixing plate (302) away from the fixing frame (301). A rotating rod (304) is rotatably connected to the inner wall of the fixing block (303). The rotating rod (304) is fixedly connected to the connecting plate (305). A limiting plate (312) is fixedly connected to the upper surface of the connecting plate (311). One side of the limiting plate (312) A positioning block (316) is fixedly connected. A connecting rod (317) is fixedly connected to one side of the positioning block (316). A rotating block (318) is rotatably connected to the end of the connecting rod (317) away from the positioning block (316). A pressing plate (319) is fixedly connected to the side of the rotating block (318) close to the limiting plate (312). A threaded rod (321) is threadedly connected to the inner wall of the pressing plate (319). A rotating column (322) is fixedly connected to the upper end of the threaded rod (321). The threaded rod (321) is threadedly connected to the limiting plate (312).

2. The spray gun for a melting converter according to claim 1, characterized in that: A limiting rod (315) is fixedly connected to the inner wall of the connecting groove (313), and the limiting rod (315) is slidably connected to the connecting block (314).

3. The spray gun for a melting converter according to claim 1, characterized in that: An auxiliary rod (309) is fixedly connected to the inner wall of the lead screw (308), and the cross-section of the auxiliary rod (309) is circular.

4. The spray gun for a melting converter according to claim 1, characterized in that: The rotating column (322) has a plurality of anti-slip grooves (323) on its arc surface, and the plurality of anti-slip grooves (323) are evenly distributed on the arc surface of the rotating column (322).

5. The spray gun for a melting converter according to claim 1, characterized in that: Three protective pads (320) are fixedly connected to the side of the extrusion plate (319) near the limiting plate (312), and the three protective pads (320) respectively abut against the air inlet pipe (2), the water inlet pipe (5) and the water outlet pipe (6).

6. The spray gun for a melting converter according to claim 1, characterized in that: The surface of the gun body (1) is provided with an auxiliary structure (4). The auxiliary structure (4) includes a fixing ring (41). The fixing ring (41) is fixedly connected to the gun body (1). The inner wall of the fixing ring (41) has two auxiliary grooves (42). The inner wall of the auxiliary grooves (42) is slidably connected with connecting blocks (45). The two connecting blocks (45) are fixedly connected to adjusting plates (46) on the side away from each other. The lower surface of the adjusting plate (46) is fixedly connected with a positioning plate (47). A spring (44) is provided between the side of the connecting block (45) away from the positioning plate (47) and the auxiliary groove (42). The two ends of the spring (44) are fixedly connected to the connecting block (45) and the auxiliary groove (42) respectively. The positioning plate (47) is slidably connected to the gun body (1).

7. A spray gun for a melting converter according to claim 6, characterized in that: The inner wall of the auxiliary groove (42) is fixedly connected to a positioning rod (43), and the positioning rod (43) is slidably connected to the connecting block (45).

8. A spray gun for a melting converter according to claim 6, characterized in that: The positioning plate (47) is made of stainless steel.

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