Water-cooled nozzle for electric arc furnace discharge

Abstract

The utility model discloses a water-cooled furnace nozzle for discharging materials from an electric arc furnace, comprising an inner wall and an outer wall, a fixing rib is installed at the lower part of the outer wall, a cover plate is installed at the upper part of the fixing rib, and an end cover is installed at the rear end face of the cover plate, multiple groups of stirring shafts are installed between the inner wall and the outer wall, a discharging pipe is fixedly penetrated through the upper part of the inner wall and the outer wall, a first sealing bearing is penetrated through the upper part of the cover plate, and a connecting shaft is penetrated inside the first sealing bearing, and multiple groups of stirring blades are fixedly installed on the side wall of one end of the connecting shaft, an inlet pipe and an outlet pipe are fixedly penetrated through the side wall of the outer wall, a first control valve is provided on the side wall of the inlet pipe and the outlet pipe, and a baffle is installed below the discharging pipe. Beneficial effects: The utility model adopts a stirring shaft, and the stirring shaft is provided with a stirring structure, which can make all cooling water fully contact the furnace nozzle structure, thereby improving the practicality of using the water-cooled furnace nozzle for discharging materials from an electric arc furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of arc furnace nozzles, in particular to a water-cooled nozzle for discharging materials from an arc furnace. Background Art

[0002] An electric arc furnace is an electric furnace that uses the high temperature generated by the electrode arc to melt ores and metals. Electric arc furnaces can be divided into three-phase electric arc furnaces, consumable electric arc furnaces, single-phase electric arc furnaces, resistance electric arc furnaces and other types according to the arc form. It is suitable for the smelting of high-quality alloy steel. The furnace nozzle is one of the main components of the electric arc furnace and is used to discharge the molten liquid inside the electric arc furnace. In actual use, it has the advantages of simple operation, stable structure and good use effect.

[0003] The prior art discloses an electric furnace nozzle and an electric arc furnace with a publication number of CN213747841U, which includes a furnace nozzle body, a groove structure A, a feed port, a discharge port, a sealing sleeve, an end cover, an upper sleeve body, a fixing rib, a cooling structure, a groove structure B, a cooling medium inlet, a cooling medium outlet, a stirring device, a stirring wheel, a stirring shaft and a discharge pipe. After the furnace nozzle of this embodiment is installed on the electric arc furnace, cooling water / gas is connected from the cooling medium inlet of the cooling structure, and passes through the cooling channel. It flows out from the cooling medium outlet. When the fused brick product is cast, cooling water / gas is turned on. The slurry flows out from the feed port and spreads on the Ω-shaped protrusion. The cooling capacity of the cooling water / gas and the Ω-shaped protrusion are used to evenly supercool the slurry as a whole, accelerating the formation and solidification of the crystal nucleus. Then it flows to the stirring wheel blades and is broken by the stirring and vibration of the stirring wheel blades. The dendritic crystals formed on the surface of the supercooled slurry further refine the grains. Finally, it flows out from the discharge port and is cast into the sand mold. After cooling, the fused brick casting sample is obtained.

[0004] In the above utility model, cooling water passes through the gap between the groove structure A and the groove structure B to complete the cooling of the groove structure A, the groove structure B and the molten liquid. There is no stirring structure, and it is difficult for the cooling water inside the groove structure A and the groove structure B to be fully contacted, which will cause the cooling water to mix with high and low temperatures, thereby reducing the cooling efficiency of the furnace nozzle.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides an electric arc furnace discharge water-cooled nozzle with a stirring structure, which has the advantage of enabling all cooling water to fully contact the nozzle structure, thereby solving the problems in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] In order to achieve the above advantages of having a stirring structure and enabling all cooling water to fully contact the furnace nozzle structure, the specific technical solutions adopted by the utility model are as follows:

[0010] The electric arc furnace discharge water-cooled furnace nozzle comprises an inner wall and an outer wall, the lower part of the outer wall is provided with a fixing rib, the upper part of the fixing rib is provided with a cover plate, and the rear end face of the cover plate is provided with an end cover, a plurality of stirring shafts are provided between the inner wall and the outer wall, a discharge pipe is fixedly penetrated through the upper part of the inner wall and the outer wall, a first sealed bearing is penetrated through the upper part of the cover plate, a connecting shaft is penetrated through the interior of the first sealed bearing, and a plurality of stirring blades are fixedly installed on the side wall at one end of the connecting shaft, a water inlet pipe and a water outlet pipe are fixedly penetrated through the side wall of the outer wall, and the side walls of the water inlet pipe and the water outlet pipe are both provided with a first control valve, A baffle is installed below the discharge pipe, two groups of sealing plates are installed between the inner wall and the outer wall, multiple groups of second sealed bearings are penetrated through the end surface of the end cover, and multiple groups of second sealed bearings are respectively penetrated through one end of the stirring shafts, and multiple groups of connecting plates are installed on the side walls of the stirring shafts. The side walls of one end of the stirring shafts are fixedly sleeved with driven gears, a mounting plate is welded on the upper part of the cover plate, and a transmission shaft is installed on the end surface of the mounting plate through a bearing, and the side wall of the transmission shaft is fixedly sleeved with a main gear and a first bevel gear, and the side wall of the other end of the connecting shaft is fixedly sleeved with a second bevel gear.

[0011] Furthermore, the first bevel gear and the second bevel gear are meshed with each other.

[0012] Furthermore, the main gear meshes with the plurality of groups of driven gears.

[0013] Furthermore, a fixed plate is welded to the lower portion of the outer wall, and two groups of guide holes are opened on the end surface of the fixed plate, and T-shaped rods are slidably penetrated inside the two groups of guide holes, one end of the two groups of T-shaped rods is welded to the rear end surface of the baffle, and the side walls of the two groups of T-shaped rods are sleeved with telescopic springs, and the side walls of the two groups of T-shaped rods are fixedly sleeved with a movable plate, a water tank is installed on the rear end surface of the movable plate, and water pipes are fixedly penetrated on both sides of the water tank, one end of the two groups of water pipes are installed with connecting hoses, and the side walls of the two groups of water pipes are provided with second control valves.

[0014] Furthermore, two ends of the two groups of telescopic springs are fixedly connected to the facing surfaces of the fixed plate and the movable plate respectively.

[0015] Furthermore, the diameter lengths of the two groups of T-shaped rod limiting ends are greater than the diameter lengths of the two groups of guide holes.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a water-cooled furnace nozzle for discharging electric arc furnace, which has the following beneficial effects:

[0018] (1) The utility model adopts a stirring shaft. When the water-cooled furnace nozzle for discharging electric arc furnace is actually used, the other end of the connecting shaft needs to be clamped with the output end of the external motor. By using the first sealed bearing, when the motor is working, its output end can drive the second bevel gear and multiple groups of stirring blades to rotate through the connecting shaft. By using the transmission shaft and the mounting plate, since the first bevel gear and the second bevel gear are meshed with each other, the second bevel gear can drive the first bevel gear to rotate. The first bevel gear can drive the main gear to rotate through the transmission shaft. By using multiple groups of second sealed bearings, since the main gear and the multiple groups of driven gears are meshed with each other, the main gear can drive the multiple groups of driven gears to rotate. The multiple groups of driven gears can drive the multiple groups of connecting plates to rotate through the multiple groups of stirring shafts. The rotating multiple groups of connecting plates can stir the cooling water between the outer wall and the inner wall. The stirred cooling water can fully contact the outer wall and the inner wall. The molten liquid can flow along the inner wall and finally be discharged through the discharge pipe. The stirring shaft is provided with a stirring structure, which can make all the cooling water fully contact the furnace nozzle structure, thereby improving the practicality of the water-cooled furnace nozzle for discharging electric arc furnace.

[0019] (2) The utility model adopts a baffle. Before tilting the electric arc furnace, cooling water is injected into the interior of the water tank through a group of connecting hoses and a group of water pipes on the same side, and then the two groups of second control valves are closed. At this time, when the electric arc furnace is tilted again, under the action of gravity, the water tank can move the baffle backward through the movable plate and the two groups of T-shaped rods. During this process, the movable plate can stretch the two groups of telescopic springs. When the baffle is misaligned with the discharge pipe, the molten liquid inside the inner wall can be discharged through the discharge pipe. When the molten liquid discharge volume reaches the expected amount, a group of second control valves is opened and closed, and the cooling water inside the water tank can be discharged through another group of water pipes and another group of connecting hoses. The two groups of telescopic springs are acted upon by their own elastic force. By pulling the movable plate, the movable plate drives the two groups of T-shaped rods and the baffle to move forward and reset. Finally, the baffle will cover the lower end opening of the discharge pipe. At this time, the molten liquid inside the inner wall cannot be discharged through the discharge pipe. By setting the baffle, after the discharge is completed, the molten liquid adsorbed inside the discharge pipe can be prevented from dripping, thereby improving the safety of the water-cooled furnace nozzle for discharge of the electric arc furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the water-cooled furnace nozzle for discharging electric arc furnace proposed by the utility model;

[0022] Figure 2This is the front view of the main gear proposed by the utility model;

[0023] Figure 3 It is a stereoscopic diagram of the stirring shaft proposed by the utility model;

[0024] Figure 4 It is a top view of the baffle proposed by the utility model;

[0025] Figure 5 The utility model proposes Figure 1 A magnified view of middle;

[0026] Figure 6 The utility model proposes Figure 1 Enlarged view of middle B;

[0027] Figure 7 The utility model proposes Figure 1 Enlarged view of C in the middle.

[0028] In the figure:

[0029] 1. Inner wall; 2. Outer wall; 3. Cover plate; 4. Sealing plate; 5. Fixed rib; 6. End cover; 7. Agitator shaft; 8. Water inlet pipe; 9. Water outlet pipe; 10. First control valve; 11. Discharge pipe; 12. First sealed bearing; 13. Connecting shaft; 14. Agitator blade; 15. Baffle; 16. Mounting plate; 17. Transmission shaft; 18. First bevel gear; 19. Main gear; 20. Second sealed bearing; 21. Connecting piece; 22. Driven gear; 23. Fixed plate; 24. Guide hole; 25. T-bar; 26. Telescopic spring; 27. Water tank; 28. Water guide pipe; 29. ​​Connecting hose; 30. Second control valve; 31. Moving plate; 32. Second bevel gear. DETAILED DESCRIPTION

[0030] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0031] According to an embodiment of the utility model, a water-cooled furnace nozzle for discharging materials from an electric arc furnace is provided.

[0032] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-7As shown, the water-cooled furnace nozzle for discharging electric arc furnace according to the embodiment of the utility model comprises an inner wall 1 and an outer wall 2, a fixing rib 5 is installed at the lower part of the outer wall 2, a cover plate 3 is installed at the upper part of the fixing rib 5, and an end cover 6 is installed at the rear end surface of the cover plate 3, a plurality of stirring shafts 7 are installed between the inner wall 1 and the outer wall 2, a discharging pipe 11 is fixedly penetrated through the upper part of the inner wall 1 and the outer wall 2, a first sealed bearing 12 is penetrated through the upper part of the cover plate 3, and a connecting shaft 13 is penetrated inside the first sealed bearing 12, and a plurality of stirring blades 14 are fixedly installed on the side wall of one end of the connecting shaft 13, a water inlet pipe 8 and a water outlet pipe 9 are fixedly penetrated through the side wall of the outer wall 2, and a first control valve 10 is provided on the side walls of the water inlet pipe 8 and the water outlet pipe 9, a baffle 15 is installed below the discharging pipe 11, and the inner wall 1 and Two groups of sealing plates 4 are installed between the outer walls 2, and the end faces of the end covers 6 are penetrated by multiple groups of second sealed bearings 20. One ends of the multiple groups of stirring shafts 7 are penetrated by multiple groups of second sealed bearings 20 respectively. The side walls of the multiple groups of stirring shafts 7 are installed with multiple groups of connecting plates 21. The side walls of one end of the multiple groups of stirring shafts 7 are fixedly sleeved with driven gears 22. A mounting plate 16 is welded to the upper part of the cover plate 3, and a transmission shaft 17 is installed on the end face of the mounting plate 16 through a bearing, and a main gear 19 and a first bevel gear 18 are fixedly sleeved on the side wall of the transmission shaft 17, and a second bevel gear 32 is fixedly sleeved on the side wall of the other end of the connecting shaft 13. The stirring shaft 7 is provided with a stirring structure, which can make all the cooling water fully contact the furnace nozzle structure, thereby improving the practicality of the water-cooled furnace nozzle for discharging electric arc furnace.

[0033] In one embodiment, the first bevel gear 18 and the second bevel gear 32 are meshed with each other, so that the second bevel gear 32 pushes the first bevel gear 18 to rotate.

[0034] In one embodiment, the main gear 19 and the plurality of driven gears 22 are meshed with each other, so that the main gear 19 drives the plurality of driven gears 22 to rotate.

[0035] In one embodiment, a fixing plate 23 is welded to the lower portion of the outer wall 2, and two groups of guide holes 24 are opened on the end face of the fixing plate 23, and T-shaped rods 25 are slidably penetrated inside the two groups of guide holes 24, one end of the two groups of T-shaped rods 25 is welded to the rear end face of the baffle 15, and the side walls of the two groups of T-shaped rods 25 are sleeved with telescopic springs 26, and the side walls of the two groups of T-shaped rods 25 are fixedly sleeved with a movable plate 31, and a water tank 27 is installed on the rear end face of the movable plate 31, and water pipes 28 are fixedly penetrated on both sides of the water tank 27, and connecting hoses 29 are installed on one end of the two groups of water pipes 28, and second control valves 30 are provided on the side walls of the two groups of water pipes 28. By setting the baffle 15, after the discharge is completed, the molten liquid adsorbed inside the discharge pipe 11 can be prevented from dripping, thereby improving the safety of the water-cooled furnace nozzle for discharge of electric arc furnace.

[0036] In one embodiment, two ends of the two sets of telescopic springs 26 are fixedly connected to the facing surfaces of the fixed plate 23 and the movable plate 31 , respectively.

[0037] In one embodiment, the diameter length of the limiting ends of the two groups of T-shaped rods 25 is greater than the diameter length of the two groups of guide holes 24 to prevent the two groups of T-shaped rods 25 from being separated from the two groups of guide holes 24 .

[0038] Working principle:

[0039] When the electric arc furnace discharge water-cooled nozzle is actually used, the other end of the connecting shaft 13 needs to be clamped with the output end of the external motor. By using the first sealed bearing 12, when the motor is working, its output end can drive the second bevel gear 32 and multiple groups of stirring blades 14 to rotate through the connecting shaft 13. By using the transmission shaft 17 and the mounting plate 16, since the first bevel gear 18 and the second bevel gear 32 are meshed with each other, the second bevel gear 32 can push the first bevel gear 18 to rotate, and the first bevel gear 18 can drive the main gear 19 to rotate through the transmission shaft 17. By using multiple groups of second sealed bearings 20, since the main gear The main gear 19 is meshed with the multiple sets of driven gears 22, and the multiple sets of driven gears 22 can drive the multiple sets of connecting pieces 21 to rotate through the multiple sets of stirring shafts 7. The rotating multiple sets of connecting pieces 21 can stir the cooling water between the outer wall 2 and the inner wall 1, and the stirred cooling water can fully contact the outer wall 2 and the inner wall 1. The molten liquid can flow along the inner wall 1 and finally be discharged through the discharge pipe 11. The stirring shaft 7 is provided with a stirring structure, which can make all the cooling water fully contact the furnace nozzle structure, thereby improving the practicality of the water-cooled furnace nozzle for discharging electric arc furnace At the same time, before tilting the electric arc furnace, cooling water is injected into the water tank 27 through a group of connecting hoses 29 and a group of water pipes 28 on the same side, and then the two groups of second control valves 30 are closed. At this time, when the electric arc furnace is tilted again, under the action of gravity, the water tank 27 can move the baffle 15 backward through the movable plate 31 and the two groups of T-shaped rods 25. In this process, the movable plate 31 can stretch the two groups of telescopic springs 26. When the baffle 15 is misaligned with the discharge pipe 11, the molten liquid inside the inner wall 1 can be discharged through the discharge pipe 11. When the molten liquid discharge amount reaches the expected amount, open and close a group of second control valves 30. The cooling water in the water tank 27 can be discharged through another set of water pipes 28 and another set of connecting hoses 29. The two sets of telescopic springs 26 are acted upon by their own elastic force. By pulling the movable plate 31, the movable plate 31 drives the two sets of T-shaped rods 25 and the baffle 15 to move forward and reset. Finally, the baffle 15 will cover the lower end opening of the discharge pipe 11. At this time, the molten liquid inside the inner wall 1 cannot be discharged through the discharge pipe 11. By setting the baffle 15, after the discharge is completed, the molten liquid adsorbed inside the discharge pipe 11 can be prevented from dripping, thereby improving the safety of the water-cooled furnace nozzle for discharge of the electric arc furnace.

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The electric arc furnace discharge water-cooled nozzle is characterized in that: The invention comprises an inner wall (1) and an outer wall (2), wherein a fixing rib (5) is installed at the lower part of the outer wall (2), and a cover plate (3) is installed at the upper part of the fixing rib (5), and an end cover (6) is installed at the rear end surface of the cover plate (3), a plurality of stirring shafts (7) are installed between the inner wall (1) and the outer wall (2), a discharge pipe (11) is fixedly penetrated through the upper part of the inner wall (1) and the outer wall (2), a first sealing bearing (12) is penetrated through the upper part of the cover plate (3), and a connecting shaft (13) is penetrated inside the first sealing bearing (12), and a plurality of stirring blades (14) are fixedly installed on the side wall of one end of the connecting shaft (13), a water inlet pipe (8) and a water outlet pipe (9) are fixedly penetrated through the side wall of the outer wall (2), and the side walls of the water inlet pipe (8) and the water outlet pipe (9) are both provided with a first control valve (10), and the discharge pipe (11) is fixedly penetrated through the upper part of the inner wall (1) and the outer wall (2), and a first sealing bearing (12) is penetrated through the upper part of the cover plate (3), and a connecting shaft (13) is penetrated inside the first sealing bearing (12), and a plurality of stirring blades (14) are fixedly installed on the side wall of one end of the connecting shaft (13), and a water inlet pipe (8) and a water outlet pipe (9) are fixedly penetrated through the side wall of the outer wall (2), and the side walls of the water inlet pipe (8) and the water outlet pipe (9) are both provided with a first control valve (10), and the discharge pipe (11) is fixedly penetrated through the upper part of the inner wall (1) and the outer wall (2), and the discharge pipe (11) is fixedly penetrated through the upper part of the inner wall (1) and the outer wall (2), and the discharge pipe (11) A baffle (15) is installed below the tube (11), two groups of sealing plates (4) are installed between the inner wall (1) and the outer wall (2), the end surface of the end cover (6) is penetrated by multiple groups of second sealing bearings (20), one end of multiple groups of stirring shafts (7) respectively penetrates multiple groups of second sealing bearings (20), the side walls of multiple groups of stirring shafts (7) are installed with multiple groups of connecting plates (21), one end side walls of multiple groups of stirring shafts (7) are fixedly sleeved with driven gears (22), the upper part of the cover plate (3) is welded with a mounting plate (16), and the end surface of the mounting plate (16) is installed with a transmission shaft (17) through a bearing, and the side wall of the transmission shaft (17) is fixedly sleeved with a main gear (19) and a first bevel gear (18), and the other end side wall of the connecting shaft (13) is fixedly sleeved with a second bevel gear (32).

2. The water-cooled furnace nozzle for discharging electric arc furnace according to claim 1, characterized in that: The first bevel gear (18) and the second bevel gear (32) are meshed with each other.

3. The water-cooled furnace nozzle for discharging electric arc furnace according to claim 1, characterized in that: The main gear (19) and the plurality of sets of driven gears (22) are meshed with each other.

4. The water-cooled furnace nozzle for discharging electric arc furnace according to claim 1, characterized in that: A fixing plate (23) is welded to the lower part of the outer wall (2), and two groups of guide holes (24) are opened on the end surface of the fixing plate (23), and T-shaped rods (25) are slidably penetrated inside the two groups of guide holes (24), one end of the two groups of T-shaped rods (25) is welded to the rear end surface of the baffle (15), and the side walls of the two groups of T-shaped rods (25) are sleeved with telescopic springs (26), and the side walls of the two groups of T-shaped rods (25) are fixedly sleeved with a movable plate (31), and the rear end surface of the movable plate (31) is installed with a water tank (27), and water pipes (28) are fixedly penetrated on both sides of the water tank (27), and one end of the two groups of water pipes (28) is installed with a connecting hose (29), and the side walls of the two groups of water pipes (28) are provided with a second control valve (30).

5. The water-cooled furnace nozzle for discharging electric arc furnace according to claim 4, characterized in that: The two ends of the two groups of telescopic springs (26) are respectively fixedly connected to the facing surfaces of the fixed plate (23) and the movable plate (31).

6. The water-cooled furnace nozzle for discharging electric arc furnace according to claim 4, characterized in that: The diameter lengths of the limiting ends of the two groups of T-shaped rods (25) are greater than the diameter lengths of the two groups of guide holes (24).

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