Multifunctional furnace wall epoxy ceramic carbon gun

Abstract

The present invention provides a multifunctional furnace wall epoxy ceramic carbon gun, which belongs to the technical field of steelmaking electric furnace carbon guns. The multifunctional furnace wall epoxy ceramic carbon gun comprises a nozzle, an outer tube is arranged inside the nozzle, a middle tube is arranged inside the outer tube, an inner tube is arranged inside the middle tube, an oxygen tube is arranged inside the inner tube, an epoxy spray hole is arranged at one end of the oxygen tube, a carbon gun core is arranged inside the oxygen tube, and a ceramic carbon gun barrel is arranged inside the carbon gun core. The multifunctional furnace wall epoxy ceramic carbon gun of the present invention can be installed on the furnace wall of the electric furnace alone without being installed in a copper water tank, thereby improving the strength of the carbon powder pipeline, eliminating the need for frequent replacement, and being able to quickly replace the carbon tube, and the epoxy spray hole spraying protects the carbon powder flow by forming a low-energy annular flame ring, reducing the influence of gravity and resistance on the carbon powder flow spray, and can greatly increase the effective distance of the carbon powder spraying, and spray the carbon powder to a position closer to the center of the electric furnace.

Description

Technical Field

[0001] The invention relates to the technical field of carbon guns for steel-making electric furnaces, in particular to a multifunctional furnace wall epoxy ceramic carbon gun. Background Art

[0002] Electric furnace steelmaking is an oxidation-reduction process. Carbon powder injection is crucial in the entire steelmaking process. It is used to form foam slag to remove impurities in molten steel in the early stage, and to reduce the oxygen content in the molten steel to the target requirement in the later stage. With the continuous development of the steelmaking industry, ultra-high power large electric furnaces are becoming more and more popular. How to quickly and effectively make carbon powder play a better role in the steelmaking process is a major goal of current research.

[0003] Current issues:

[0004] 1. At present, a simple thick-walled steel pipe is generally fixed in a single hole of a copper water tank installed on the wall of an electric furnace as a conveying pipe to spray carbon powder into the electric furnace. Since the carbon powder particles are large, when spraying carbon powder into the electric furnace, the friction of the carbon powder flow with a certain speed is very large, and the life of the thick-walled steel pipe is very low due to friction, and it needs to be replaced constantly, which seriously affects the continuity of the steelmaking process; since it is installed in a single hole of the copper water tank, if it is not replaced in time, once the thick-walled steel pipe is damaged, it is easy to cause the carbon powder flow to directly flush the copper water tank body, causing damage to the copper water tank, and there is a very large safety hazard.

[0005] 2. On the other hand, since the steel pipe is not resistant to high temperatures and cannot be too close to the center of the electric furnace, after the carbon powder is sprayed out of the steel pipe, it falls rapidly due to its own gravity. Most of the carbon powder particles fall to a position close to the furnace wall, and it is impossible to spray at a longer distance to reach a position closer to the center of the electric furnace. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a multifunctional furnace wall epoxy ceramic carbon gun, which solves the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a multifunctional furnace wall epoxy ceramic carbon gun, comprising a nozzle, an outer tube is arranged inside the nozzle, a middle tube is arranged inside the outer tube, an inner tube is arranged inside the middle tube, an oxygen tube is arranged inside the inner tube, an epoxy spray hole is arranged at one end of the oxygen tube, a carbon gun core is arranged inside the oxygen tube, a ceramic carbon gun barrel is arranged inside the carbon gun core, a carbon spray hole is arranged at one end of the ceramic carbon gun barrel, a return water is arranged near the center line on one side of the outer surface of the nozzle, a No. 1 flange is arranged outside the return water on the outer surface of the nozzle, a water inlet is arranged outside the No. 1 flange on the outer surface of the nozzle, an outer pipe connecting pipe is arranged outside the water inlet on the outer surface of the nozzle, a No. 2 flange is arranged on one side of the outer pipe connecting pipe, and a A No. 1 carbon tube flange, a gun core positioning flange is arranged on the inner side of the No. 1 carbon tube flange, a live bolt is arranged through the surface of the No. 1 carbon tube flange and the gun core positioning flange, a live bolt fixing pin is arranged on the inner surface of one end of the live bolt, live bolt fixing plates are arranged at both ends of the outer surface of the live bolt fixing pin, an epoxy joint is arranged on the inner side of the gun core positioning flange on the outer surface of the carbon gun core, a quick connector male end is arranged on one end of the carbon gun core close to the No. 1 carbon tube flange, a sealing gasket is arranged on one side of the quick connector male end, a quick connector female end is arranged on one side of the sealing gasket, a carbon tube connecting pipe is arranged inside the quick connector female end, a carbon tube joint is arranged at one end of the carbon tube connecting pipe, a thread plug is arranged at one end of the carbon tube joint, and a No. 2 carbon tube flange is arranged at the bottom of the carbon tube joint.

[0008] As a preferred technical solution of the present invention, the gaps between the outer tube, the inner tube and the middle tube form a closed waterway, the top of the outer tube is fixedly connected to the upper end of the closed waterway, one side of the No. 2 flange is fixedly connected to the upper end of the closed waterway, and one side of the No. 1 flange is fixedly connected to the lower end of the closed waterway.

[0009] As a preferred technical solution of the present invention, the water inlet is connected through the upper end of the closed waterway, and the water return is connected through the lower end of the closed waterway.

[0010] As a preferred technical solution of the present invention, the annular gap between the inner tube and the oxygen tube forms an epoxy channel, one side of the gun core positioning flange is fixedly connected to one end of the epoxy channel, and the epoxy spray hole is arranged at the other end of the epoxy channel.

[0011] As a preferred technical solution of the present invention, the epoxy spray holes are arranged in several groups on the outer surface of one end of the nozzle at the other end of the epoxy channel, and the several groups of epoxy spray holes are distributed in a ring shape on the outer surface of one end of the nozzle.

[0012] As a preferred technical solution of the present invention, the No. 1 carbon tube flange is fixedly connected to the inner surface of the gun core positioning flange and the outer surface of the carbon gun core, the inner surface of the oxygen tube is slidably connected to the outer surface of the carbon gun core, the inner surface of the hinge bolt fixing plate is provided with a threaded structure, the hinge bolt fixing plate is threadedly connected to the hinge bolt fixing pin shaft through the threaded structure, the outer surface of the hinge bolt fixing pin shaft is slidably connected to the inner surface of the hinge bolt, and the gun core positioning flange and the No. 1 carbon tube flange are fixedly connected to the hinge bolt fixing pin shaft through the hinge bolt.

[0013] As a preferred technical solution of the present invention, the inner surface of the quick connector female end is sleeved with the outer surface of the carbon pipe connecting pipe, and the quick connector female end, the sealing gasket, the inner surface of the quick connector male end are slidably connected with the outer surface of the carbon gun core.

[0014] As a preferred technical solution of the present invention, the inner surface of the carbon pipe joint is fixedly connected to the outer surface of the ceramic carbon gun barrel, and the material used for the carbon pipe joint is one-step-molded wear-resistant cast iron.

[0015] Compared with the prior art, the present invention provides a multifunctional furnace wall epoxy ceramic carbon gun, which has the following beneficial effects:

[0016] 1. The multifunctional furnace wall epoxy ceramic carbon gun fixes the ceramic carbon gun barrel through the carbon tube joint and the carbon gun core. The wear-resistant property of the ceramic material of the ceramic carbon gun barrel can ensure that the ceramic carbon gun barrel will not be damaged for a long time under the scouring of the carbon powder flow. When problems occur in the carbon gun core, the ceramic carbon gun barrel, the No. 1 carbon tube flange, the male end of the quick connector, the sealing gasket, the female end of the quick connector, the carbon tube connecting pipe, the carbon tube joint, and the No. 2 carbon tube flange, the movable bolt fixing pin can be rotated and removed through the threaded connection between the movable bolt fixing plate and the movable bolt fixing pin and the sliding connection between the movable bolt fixing pin and the movable bolt. The gun core positioning flange can be separated from the No. 1 carbon tube flange by removing the movable bolt from the gun core positioning flange and the No. 1 carbon tube flange, so that this part can be quickly replaced online.

[0017] 2. The multifunctional furnace wall epoxy ceramic carbon gun inputs cooling water into the closed water path formed by the gaps among the outer tube, inner tube and middle tube through the water inlet. The cooling water that absorbs the heat flows out through the return water to complete the water cooling cycle, lowering the temperature outside the nozzle. This can protect the entire carbon gun from normal use under high temperature of the electric furnace, allowing the nozzle to reach a deeper position in the center of the electric furnace without being damaged by high temperature.

[0018] 3. The multifunctional furnace wall epoxy ceramic carbon gun sprays epoxy through the epoxy spray hole to form a low-energy annular flame ring to protect the carbon powder flow, reduce the influence of gravity and resistance on the carbon powder flow, greatly increase the effective distance of carbon powder spraying, and spray the carbon powder to a position closer to the center of the electric furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the multifunctional furnace wall epoxy ceramic carbon gun of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection between the gun core positioning flange and the No. 1 carbon tube flange of the multifunctional furnace wall epoxy ceramic carbon gun of the present invention;

[0021] Figure 3 It is a schematic diagram of the water return and water inlet positions of the multifunctional furnace wall epoxy ceramic carbon gun of the present invention;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the multifunctional furnace wall epoxy ceramic carbon gun nozzle of the present invention;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the multifunctional furnace wall epoxy ceramic carbon gun live joint bolt fixing plate of the present invention.

[0024] In the figure: 1. nozzle; 2. outer tube; 3. inner tube; 4. oxygen tube; 5. middle tube; 6. carbon gun core; 7. ceramic carbon gun barrel; 8. water return; 9. No. 1 flange; 10. water inlet; 11. outer tube connection pipe; 12. No. 2 flange; 13. epoxy joint; 14. swing bolt; 15. swing bolt fixing plate; 16. swing bolt fixing pin; 17. gun core positioning flange; 18. No. 1 carbon tube flange; 19. quick connector male end; 20. sealing gasket; 21. quick connector female end; 22. carbon tube connection pipe; 23. carbon tube joint; 24. screw plug; 25. No. 2 carbon tube flange; 26. carbon spray hole; 27. epoxy spray hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-5In this embodiment: a multifunctional furnace wall epoxy ceramic carbon gun comprises a nozzle 1, an outer tube 2 is arranged inside the nozzle 1, a middle tube 5 is arranged inside the outer tube 2, an inner tube 3 is arranged inside the middle tube 5, an oxygen tube 4 is arranged inside the inner tube 3, an epoxy spray hole 27 is arranged at one end of the oxygen tube 4, a carbon gun core 6 is arranged inside the oxygen tube 4, a ceramic carbon gun barrel 7 is arranged inside the carbon gun core 6, a carbon spray hole 26 is arranged at one end of the ceramic carbon gun barrel 7, a return water 8 is arranged near the center line on one side of the outer surface of the nozzle 1, a No. 1 flange 9 is arranged outside the return water 8 on the outer surface of the nozzle 1, a water inlet 10 is arranged outside the No. 1 flange 9 on the outer surface of the nozzle 1, an outer pipe connecting pipe 11 is arranged outside the water inlet 10 on the outer surface of the nozzle 1, a No. 2 flange 12 is arranged on one side of the outer pipe connecting pipe 11, a No. 1 carbon pipe flange 18 is arranged at one end of the outer surface of the carbon gun core 6, and a No. 1 carbon pipe flange 1 8 is provided with a gun core positioning flange 17 on the inner side, a live bolt 14 is provided through the surface of the No. 1 carbon tube flange 18 and the gun core positioning flange 17, a live bolt 14 is provided on the inner surface of one end of the live bolt 14, and live bolt fixing pins 16 are provided on both ends of the outer surface of the live bolt fixing pins 16, an epoxy joint 13 is provided on the inner side of the gun core positioning flange 17 on the outer surface of the carbon gun core 6, a quick connector male end 19 is provided on one end of the carbon gun core 6 close to the No. 1 carbon tube flange 18, a sealing gasket 20 is provided on one side of the quick connector male end 19, a quick connector female end 21 is provided on one side of the sealing gasket 20, a carbon tube connecting pipe 22 is provided inside the quick connector female end 21, a carbon tube joint 23 is provided on one end of the carbon tube connecting pipe 22, a thread plug 24 is provided on one end of the carbon tube joint 23, and a No. 2 carbon tube flange 25 is provided at the bottom of the carbon tube joint 23.

[0027] In this embodiment, the gap between the outer tube 2, the inner tube 3, and the middle tube 5 forms a closed waterway, the top of the outer tube 11 is fixedly connected to the upper end of the closed waterway, the side of the No. 2 flange 12 is fixedly connected to the upper end of the closed waterway, and the side of the No. 1 flange 9 is fixedly connected to the lower end of the closed waterway; the water inlet 10 is connected to the upper end of the closed waterway, and the water return 8 is connected to the lower end of the closed waterway; the annular gap between the inner tube 3 and the oxygen tube 4 forms an epoxy channel, one side of the gun core positioning flange 17 is fixedly connected to one end of the epoxy channel, and the epoxy spray hole 27 is arranged at the other end of the epoxy channel; the epoxy spray hole 27 is arranged in a plurality of groups on the outer surface of one end of the nozzle 1 at the other end of the epoxy channel, and the plurality of groups of epoxy spray holes 27 are distributed in a ring shape on the outer surface of one end of the nozzle 1; the inner surface of the No. 1 carbon tube flange 18 and the gun core positioning flange 17 are connected to the carbon gun core 6 The outer surface is fixedly connected, the inner surface of the oxygen tube 4 is slidably connected to the outer surface of the carbon gun core 6, the inner surface of the hinge bolt fixing plate 15 is provided with a threaded structure, the hinge bolt fixing plate 15 is threadedly connected to the hinge bolt fixing pin 16 through the threaded structure, the outer surface of the hinge bolt fixing pin 16 is slidably connected to the inner surface of the hinge bolt 14, the gun core positioning flange 17 and the No. 1 carbon tube flange 18 are fixedly connected to the hinge bolt fixing pin 16 through the hinge bolt 14; the inner surface of the quick connector female end 21 is sleeved with the outer surface of the carbon tube connecting pipe 22, the inner surfaces of the quick connector female end 21, the sealing gasket 20, and the quick connector male end 19 are slidably connected to the outer surface of the carbon gun core 6; the inner surface of the carbon tube joint 23 is fixedly connected to the outer surface of the ceramic carbon gun barrel 7, and the material used for the carbon tube joint 23 is one-time formed wear-resistant cast iron.

[0028] The working principle and use process of the present invention are as follows: when the carbon gun is working, cooling water is input into the gaps among the outer tube 2, the inner tube 3 and the middle tube 5 through the water inlet 10 to form a closed water path, and the cooling water that has absorbed heat flows out through the return water 8 to complete the water cooling cycle, thereby lowering the temperature of the outside of the nozzle 1 and the outside of the outer tube 2, thereby protecting the entire carbon gun from normal use under the high temperature of the electric furnace, so that the nozzle 1 can reach a position deeper into the center of the electric furnace without being damaged by the high temperature, and epoxy is sprayed from the epoxy spray hole 27 at one end of the nozzle 1 through the epoxy channel formed by the annular seam between the inner tube 3 and the oxygen tube 4, thereby forming a low-energy annular flame ring to protect the carbon powder flow, thereby reducing the influence of gravity and resistance on the carbon powder flow injection, thereby greatly increasing the effective distance of the carbon powder injection, and injecting the carbon powder to a position closer to the center of the electric furnace, and fixing the ceramic carbon gun barrel 7 through the carbon tube joint 23 and the carbon gun core 6, and passing through The wear-resistant property of the ceramic material of the ceramic carbon gun barrel 7 can ensure that the ceramic carbon gun barrel 7 will not be damaged for a long time under the scouring of the carbon powder flow. When problems occur with the carbon gun core 6, the ceramic carbon gun barrel 7, the No. 1 carbon tube flange 18, the quick connector male end 19, the sealing gasket 20, the quick connector female end 21, the carbon tube connecting pipe 22, the carbon tube connector 23, and the No. 2 carbon tube flange 25, the movable bolt fixing pin 16 can be rotated and removed through the threaded connection between the movable bolt fixing plate 15 and the movable bolt fixing pin 16 and the sliding connection between the movable bolt fixing pin 16 and the movable bolt 14. The gun core positioning flange 17 can be separated from the No. 1 carbon tube flange 18 by removing the movable bolt 14 from the gun core positioning flange 17 and the No. 1 carbon tube flange 18, so that this part can be quickly replaced online. When blockage occurs inside the carbon gun, the wire plug 24 can be opened for dredging.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multifunctional furnace wall epoxy ceramic carbon gun, comprising a nozzle (1), characterized in that: The nozzle (1) is provided with an outer tube (2) inside, a middle tube (5) inside the outer tube (2), an inner tube (3) inside the middle tube (5), an oxygen tube (4) inside the inner tube (3), one end of the oxygen tube (4) being provided with an epoxy spray hole (27), a carbon gun core (6) inside the oxygen tube (4), a ceramic carbon gun barrel (7) inside the carbon gun core (6), one end of the ceramic carbon gun barrel (7) being provided with a carbon spray hole (26), and an outer surface of the nozzle (1) A water return (8) is provided near the center line on one side, a No. 1 flange (9) is provided on the outer side of the water return (8) on the outer surface of the nozzle (1), a water inlet (10) is provided on the outer side of the No. 1 flange (9) on the outer surface of the nozzle (1), an outer pipe connecting pipe (11) is provided on the outer side of the water inlet (10) on the outer surface of the nozzle (1), a No. 2 flange (12) is provided on one side of the outer pipe connecting pipe (11), a No. 1 carbon pipe flange (18) is provided on one end of the outer surface of the carbon gun core (6), and the inner side of the No. 1 carbon pipe flange (18) is provided. A gun core positioning flange (17) is provided, and a movable bolt (14) is provided through the surface of the No. 1 carbon tube flange (18) and the gun core positioning flange (17), and a movable bolt fixing pin (16) is provided on the inner surface of one end of the movable bolt (14), and movable bolt fixing plates (15) are provided on both ends of the outer surface of the movable bolt fixing pin (16). An epoxy joint (13) is provided on the inner side of the gun core positioning flange (17) on the outer surface of the carbon gun core (6), and the carbon gun core (6) is close to the No. 1 carbon tube. A quick connector male end (19) is provided at one end of the flange (18), a sealing gasket (20) is provided at one side of the quick connector male end (19), a quick connector female end (21) is provided at one side of the sealing gasket (20), a carbon pipe connecting pipe (22) is provided inside the quick connector female end (21), a carbon pipe joint (23) is provided at one end of the carbon pipe connecting pipe (22), a thread plug (24) is provided at one end of the carbon pipe joint (23), and a No. 2 carbon pipe flange (25) is provided at the bottom of the carbon pipe joint (23).

2. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1, characterized in that: The gaps between the outer tube (2), the inner tube (3) and the middle tube (5) form a closed waterway; the top end of the outer tube connecting pipe (11) is fixedly connected to the upper end of the closed waterway; one side of the second flange (12) is fixedly connected to the upper end of the closed waterway; and one side of the first flange (9) is fixedly connected to the lower end of the closed waterway.

3. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1 or 2, characterized in that: The water inlet (10) penetrates and connects the upper end of the closed waterway, and the water return (8) penetrates and connects the lower end of the closed waterway.

4. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1, characterized in that: The annular gap between the inner tube (3) and the oxygen tube (4) forms an epoxy channel, one side of the gun core positioning flange (17) is fixedly connected to one end of the epoxy channel, and the epoxy spray hole (27) is arranged at the other end of the epoxy channel.

5. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1 or 4, characterized in that: The epoxy spray holes (27) are arranged in a plurality of groups on the outer surface of one end of the spray head (1) at the other end of the epoxy channel. The plurality of groups of epoxy spray holes (27) are distributed in a ring shape on the outer surface of one end of the spray head (1).

6. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1, characterized in that: The inner surface of the No. 1 carbon tube flange (18) and the gun core positioning flange (17) are fixedly connected to the outer surface of the carbon gun core (6); the inner surface of the oxygen tube (4) is slidably connected to the outer surface of the carbon gun core (6); the inner surface of the articulated bolt fixing plate (15) is provided with a threaded structure; the articulated bolt fixing plate (15) is threadedly connected to the articulated bolt fixing pin shaft (16) through the threaded structure; the outer surface of the articulated bolt fixing pin shaft (16) is slidably connected to the inner surface of the articulated bolt (14); the gun core positioning flange (17) and the No. 1 carbon tube flange (18) are fixedly connected to the articulated bolt (14) and the articulated bolt fixing pin shaft (16) through the articulated bolt (14).

7. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1 is characterized in that: The inner surface of the quick connector female end (21) is sleeved with the outer surface of the carbon pipe connecting pipe (22), and the inner surface of the quick connector female end (21), the sealing gasket (20), and the quick connector male end (19) are slidably connected with the outer surface of the carbon gun core (6).

8. The multifunctional furnace wall epoxy ceramic carbon gun according to claim 1 is characterized in that: The inner surface of the carbon pipe joint (23) is fixedly connected to the outer surface of the ceramic carbon gun barrel (7), and the material used for the carbon pipe joint (23) is one-step-molded wear-resistant cast iron.

Images