An auxiliary device for fixing the coal injection gun and the ball valve.

Abstract

This utility model relates to the field of coal injection guns, and particularly to an auxiliary device for fixing the coal injection gun and the ball valve. It includes an air outlet pipe and a coal injection pipe slidably connected to the inner wall of the air outlet pipe. An adjustment component is provided on the outer wall of one end of the air outlet pipe, and a central box is installed on the outer wall of one end of the coal injection pipe. A sealing structure is provided on the inner wall of the central box at one end of the coal injection pipe. The sealing structure includes a drive box installed on the inner walls of both ends of the central box, a rotating shaft rotatably connected to the top of the outer wall of the drive box on one side close to each other, and a sealing plate installed at the center of the outer wall of the rotating shaft. The adjustment component includes protrusions welded at equal intervals to the outer wall of one end of the air outlet pipe and a threaded hole opened at the center of the protrusion. In this utility model, one end of a stabilizing screw contacts the outer wall of the coal injection pipe, securing the coal injection pipe inside the air outlet pipe. This prevents the coal injection pipe from shaking due to pressure or other factors, reducing wear on the air outlet and improving stability.

Description

Technical Field

[0001] This utility model relates to the field of coal injection gun technology, and in particular to an auxiliary device for fixing the coal injection gun and the ball valve. Background Technology

[0002] The main processes for refining metallic iron from iron-containing minerals (mainly iron oxides) include the blast furnace method, direct reduction method, smelting reduction method, and plasma method.

[0003] The pulverized coal injection lance and ball valve are specialized facilities in the blast furnace pulverized coal injection system. The ball valve is a pulverized coal injection device installed on the straight pipe of the blast furnace tuyere to house the pulverized coal injection lance. One end of the ball valve is a standard flange used to fix the ball valve to the blast furnace tuyere straight pipe, and the other end is a fixing bracket, which connects to the pulverized coal injection lance sleeve to fix the pulverized coal injection lance. During production, due to factors such as pulverized coal lance vibration and blast furnace pressure, the "coal seed" inside the tuyere often deviates from the center line, causing tuyere wear. The pulverized coal lance angle needs to be adjusted frequently, which is quite inconvenient. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems and deficiencies by proposing an auxiliary device for fixing the coal injection gun and the ball valve: a stabilizing screw is screwed into the protruding threaded hole, with one end of the stabilizing screw contacting the outer wall of the coal injection pipe, thereby securing the coal injection pipe inside the air outlet pipe, preventing the coal injection pipe from shaking due to pressure and other factors, reducing the wear of the air outlet, improving stability, and solving the problem of air outlet wear caused by coal gun vibration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An auxiliary device for fixing a coal injection gun and a ball valve includes an air outlet pipe and a coal injection pipe slidably connected to the inner wall of the air outlet pipe. An adjustment component is provided on the outer wall of one end of the air outlet pipe, and a central box is installed on the outer wall of one end of the coal injection pipe. A sealing structure is provided on the inner wall of the central box at one end of the coal injection pipe. The sealing structure includes a drive box installed on the inner walls of both ends of the central box, a rotating shaft rotatably connected to the top of the outer wall of the drive box on one side close to each other, and a sealing plate installed at the center of the outer wall of the rotating shaft. The adjustment component includes protrusions welded at equal intervals to the outer wall of one end of the air outlet pipe, a threaded hole opened at the center of the protrusion, and a stabilizing screw threaded into the threaded hole.

[0007] According to the above scheme: a stabilizing screw is screwed into the protruding threaded hole, and one end of the stabilizing screw contacts the outer wall of the pulverized coal injection pipe to tighten the pulverized coal injection pipe inside the air outlet pipe, so as to avoid the pulverized coal injection pipe from shaking due to pressure and other factors, thus reducing the wear of the air outlet and improving stability.

[0008] Preferably, the outer walls of the two sides of the central box are respectively connected to a first connecting pipe and a second connecting pipe, and valves are installed in both the first connecting pipe and the second connecting pipe.

[0009] Preferably, flanges are installed on the outer wall of one end of the air outlet pipe, the outer wall of the pulverized coal injection pipe, one end of the first connecting pipe, and one end of the second connecting pipe, and a gasket is provided between the air outlet pipe and the pulverized coal injection pipe, with the gasket slidably connected to the outer wall of the pulverized coal injection pipe.

[0010] Preferably, the outer wall of the pulverized coal injection pipe is provided with equally spaced sealing grooves located on the inner wall of the air outlet pipe, and each sealing groove is fitted with a sealing ring.

[0011] Preferably, a worm gear is installed on the outer wall of the rotating shaft at the center of the drive box, and a worm is rotatably connected to the central box at the bottom of the worm gear, with a drive groove opened on the outer wall of one end of the worm.

[0012] Preferably, the outer wall of the other end of the worm is rotatably connected to the inner wall of the drive box, and the outer wall of the worm is rotatably connected to the drive box and the central box, and the worm meshes with the worm wheel.

[0013] Preferably, handles are welded to the outer walls of both sides of the collection box, and one side of the outer wall of the sealing plate is attached to the outer wall of one end of the pulverized coal injection pipe.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. A stabilizing screw is screwed into the protruding threaded hole. One end of the stabilizing screw contacts the outer wall of the pulverized coal pipe to tighten the pulverized coal pipe inside the air outlet pipe. This prevents the pulverized coal pipe from shaking due to pressure or other factors, which can lead to unstable connection, reduce wear on the air outlet, and improve stability.

[0016] 2. Use a tool to rotate the worm gear through the drive groove on the worm gear. After the worm gear rotates, it drives the worm wheel to rotate, and the worm wheel drives the shaft to rotate, so that one side of the outer wall of the sealing plate is in contact with or separates from one end of the pulverized coal pipe, which is convenient for active opening and closing and easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an auxiliary device for fixing a coal injection gun and a ball valve according to the present invention.

[0018] Figure 2 This is a schematic diagram of the coal injection pipe structure of an auxiliary device for fixing the coal injection gun and the ball valve proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the centralized box structure of an auxiliary device for fixing a coal injection gun and a ball valve proposed in this utility model;

[0020] Figure 4This is a schematic diagram of the drive box structure of an auxiliary device for fixing a coal injection gun and a ball valve proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the air outlet pipe structure of an auxiliary device for fixing a coal injection gun and a ball valve proposed in this utility model.

[0022] In the diagram: 1. Air outlet pipe, 2. Adjustment component, 3. Coal injection pipe, 4. Centralized box, 5. Sealing structure, 6. Drive box, 7. Rotary shaft, 8. Sealing plate, 9. Worm gear, 10. Worm, 11. First connecting pipe, 12. Second connecting pipe, 13. Valve, 14. Handle, 15. Flange, 16. Sealing groove, 17. Sealing ring, 18. Gasket, 19. Threaded hole, 20. Stabilizing screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Reference Figure 1-2 and Figure 5 An auxiliary device for fixing a coal injection gun and a ball valve includes an air outlet pipe 1 and a coal injection pipe 3 slidably connected to the inner wall of the air outlet pipe 1. The device is characterized in that an adjustment component 2 is provided on the outer wall of one end of the air outlet pipe 1, and a central box 4 is installed on the outer wall of one end of the coal injection pipe 3. A sealing structure 5 is provided on the inner wall of the central box 4 at one end of the coal injection pipe 3. A stabilizing screw 20 is screwed into a protruding threaded hole 19. One end of the stabilizing screw 20 contacts the outer wall of the coal injection pipe 3 to tighten the coal injection pipe 3 inside the air outlet pipe 1 and prevent the coal injection pipe 3 from shaking due to pressure or other factors, which would cause unstable connection.

[0026] The outer wall of the pulverized coal injection pipe 3 is provided with equally spaced sealing grooves 16 located on the inner wall of the tuyere pipe 1, and each sealing groove 16 is fitted with a sealing ring 17. The sealing rings 17 in the sealing grooves 16 on the outer wall of the pulverized coal injection pipe 3 further prevent leakage. The gasket 18 and the flange 15 seal the joint after connection. The sealing rings 17 on the sealing grooves 16 seal the gap between the inner wall of the tuyere pipe 1 and the outer wall of the pulverized coal injection pipe 3, which facilitates connection.

[0027] The adjustment component 2 includes protrusions welded at equal intervals to the outer wall of one end of the tuyere pipe 1, a threaded hole 19 opened at the center of the protrusion, and a stabilizing screw 20 threadedly connected to the threaded hole 19. The stabilizing screw 20 threadedly connected to the threaded hole 19 supports the pulverized coal injection pipe 3 extending into the tuyere pipe 1, prevents the pulverized coal injection pipe 3 from vibrating due to pressure, assists in supporting the pulverized coal injection pipe 3, improves stability, and reduces wear on the tuyere.

[0028] Example 2:

[0029] Reference Figure 1-4 The sealing structure 5 includes a drive box 6 installed on the inner walls of both ends of the central box 4, a rotating shaft 7 rotatably connected to the top of the outer wall of the drive box 6 on one side close to each other, and a sealing plate 8 installed at the center of the outer wall of the rotating shaft 7.

[0030] The outer walls of the two sides of the central box 4 are respectively connected to a first connecting pipe 11 and a second connecting pipe 12, and valves 13 are installed in both the first connecting pipe 11 and the second connecting pipe 12.

[0031] Flanges 15 are installed on the outer wall of one end of the air outlet pipe 1, the outer wall of the pulverized coal injection pipe 3, one end of the first connecting pipe 11, and one end of the second connecting pipe 12. A gasket 18 is provided between the air outlet pipe 1 and the pulverized coal injection pipe 3. The gasket 18 is slidably connected to the outer wall of the pulverized coal injection pipe 3. The air outlet pipe 1 and the pulverized coal injection pipe 3 are connected by the flanges 15. The flanges 15 are assembled to compress the gasket 18, seal the joint, facilitate the connection, reduce the impact of vibration on the flange 15 connection, and improve the connection stability.

[0032] A worm gear 9 is installed on the outer wall of the rotating shaft 7 at the center of the drive box 6, and a worm 10 is rotatably connected to the bottom of the worm gear 9 in the central box 4. A drive groove is opened on the outer wall of one end of the worm 10. The worm 10 is rotated by a tool through the drive groove on the worm 10. After the worm 10 rotates, it drives the worm gear 9 to rotate. The worm gear 9 drives the rotating shaft 7 to rotate, so that one side of the outer wall of the sealing plate 8 is attached to or separated from one end of the coal injection pipe 3, which facilitates the active sealing and opening of one end of the coal injection pipe 3.

[0033] The outer wall of the other end of the worm 10 is rotatably connected to the inner wall of the drive box 6, and the outer wall of the worm 10 is rotatably connected to the drive box 6 and the central box 4. The worm 10 meshes with the worm wheel 9.

[0034] Handles 14 are welded to the outer walls of both sides of the central box 4, and one side of the outer wall of the sealing plate 8 is attached to the outer wall of one end of the pulverized coal pipe 3.

[0035] Working principle: During use, the central box 4 and the pulverized coal injection pipe 3 are inserted into the air outlet pipe 1. The flange 15 connects the air outlet pipe 1 and the pulverized coal injection pipe 3. A stabilizing screw 20 is screwed into the protruding threaded hole 19. One end of the stabilizing screw 20 contacts the outer wall of the pulverized coal injection pipe 3, securing the pulverized coal injection pipe 3 inside the air outlet pipe 1 and preventing unstable connection caused by pressure or other factors. The first connecting pipe 11 and the second connecting pipe 12 on the central box 4 are connected through the flange 15. Gas and material are mixed in the central box 4 through the first connecting pipe 11 and the second connecting pipe 12. The coal is conveyed through the pulverized coal pipe 3. The valve 13 opens and closes the first connecting pipe 11 and the second connecting pipe 12. The worm 10 is rotated by a tool through the drive groove on the worm 10. After the worm 10 rotates, it drives the worm wheel 9 to rotate. The worm wheel 9 drives the rotating shaft 7 to rotate, so that one side of the outer wall of the sealing plate 8 is attached to or separated from one end of the pulverized coal pipe 3, which facilitates the active sealing and opening of one end of the pulverized coal pipe 3. The gasket 18 and the flange 15 seal the joint after connection. The sealing ring 17 on the sealing groove 16 seals the gap between the inner wall of the air outlet pipe 1 and the outer wall of the pulverized coal pipe 3, which facilitates connection.

[0036] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An auxiliary device for fixing a coal injection gun and a ball valve, comprising an air outlet pipe (1) and a coal injection pipe (3) slidably connected to the inner wall of the air outlet pipe (1), characterized in that, An adjustment component (2) is provided on the outer wall of one end of the air outlet pipe (1), and a central box (4) is installed on the outer wall of one end of the coal injection pipe (3). A sealing structure (5) is provided on the inner wall of the central box (4) at one end of the coal injection pipe (3). The sealing structure (5) includes a drive box (6) installed on the inner walls of both ends of the central box (4), a rotating shaft (7) rotatably connected to the top of the outer wall of the drive box (6) on one side close to each other, and a sealing plate (8) installed at the center of the outer wall of the rotating shaft (7); The adjustment component (2) includes protrusions welded at equal intervals to the outer wall of one end of the air outlet pipe (1), a threaded hole (19) opened at the center of the protrusion, and a stabilizing screw (20) threaded into the threaded hole (19).

2. An auxiliary device for fixing a coal injection gun to a dart valve according to claim 1, characterized in that, The two outer walls of the central box (4) are respectively connected to a first connecting pipe (11) and a second connecting pipe (12), and valves (13) are installed in both the first connecting pipe (11) and the second connecting pipe (12).

3. The auxiliary device for fixing the coal injection gun and the poppet valve according to claim 1, characterized in that, Flanges (15) are installed on the outer wall of one end of the air outlet pipe (1), the outer wall of the pulverized coal pipe (3), one end of the first connecting pipe (11), and one end of the second connecting pipe (12). A gasket (18) is provided between the air outlet pipe (1) and the pulverized coal pipe (3), and the gasket (18) is slidably connected to the outer wall of the pulverized coal pipe (3).

4. The auxiliary device for fixing the coal injection gun and the poppet valve according to claim 1, characterized in that, The outer wall of the pulverized coal injection pipe (3) is provided with equally spaced sealing grooves (16) located on the inner wall of the air outlet pipe (1), and each sealing groove (16) is fitted with a sealing ring (17).

5. The auxiliary device for fixing the coal injection gun and the poppet valve according to claim 1, characterized in that, The outer wall of the rotating shaft (7) is equipped with a worm gear (9) located at the center of the drive box (6), and the central box (4) is rotatably connected to the worm (10) at the bottom of the worm gear (9). A drive groove is opened on the outer wall of one end of the worm (10).

6. An auxiliary device for securing a coal injection lance to a dart valve according to claim 5, wherein, The outer wall of the other end of the worm (10) is rotatably connected to the inner wall of the drive box (6), and the outer wall of the worm (10) is rotatably connected to the drive box (6) and the central box (4). The worm (10) meshes with the worm wheel (9).

7. The auxiliary device for fixing the coal injection gun and the poppet valve according to claim 1, characterized in that, The two outer walls of the central box (4) are welded with handles (14), and one outer wall of the sealing plate (8) is attached to one end of the outer wall of the pulverized coal pipe (3).

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