Ladle long nozzle burning and washing tool

Abstract

The utility model relates to the technical field of continuous casting accessory equipment, in particular to a steel ladle long nozzle burning and washing tool which comprises refractory mortar, a lifting mechanism and a rotating mechanism, the outer wall of the refractory mortar is fixedly connected with a partition plate, a sleeve is rotatably connected in the refractory mortar, a rotating pipe is slidably connected in the sleeve, and the rotating pipe is connected with the lifting mechanism. Two symmetrically-distributed key grooves are formed in the inner wall of the sleeve, two key strips matched with the key grooves are fixedly connected to the outer wall of the rotating pipe, a fixed pipe is rotationally connected to the upper end of the rotating pipe through a rotating connector, and an adsorption cavity is formed in the refractory mortar; through cooperation of a first servo motor, a threaded rod, a sliding rod, a sliding plate, a fixing pipe, a rotating connector, a second servo motor, a first gear and a second gear, the rotating pipe can be driven to rotate and move up and down at the same time, the deep position of the long nozzle can be burnt and washed in all directions, and smoke generated by burning and washing can be pumped into a smoke treatment terminal through an air pump to be treated; the use effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous casting auxiliary equipment, and specifically discloses a tool for washing the long nozzle of a steel ladle. Background Technology

[0002] In continuous casting, secondary oxidation occurs as molten steel flows from the ladle into the tundish. To reduce this secondary oxidation and improve billet quality, long nozzles are commonly used for sealing. However, in actual production, it has been found that as the long nozzle is continuously eroded by molten steel, large oxide deposits form on its inner wall, severely affecting the flow of molten steel. For example, at Handan Iron and Steel Group's No. 3 Steelmaking Plant, on average, the oxide deposits adhering to the inner wall of the long nozzle need to be cleaned with an oxygen-burning pipe every five heats. This is not only labor-intensive but also incomplete, generating significant amounts of yellow fumes that severely pollute the environment. Furthermore, the lifespan of the long nozzle is significantly reduced after several cleanings, requiring replacement on average every 10 heats, leading to increased refractory material costs.

[0003] Chinese patent CN206936365U discloses a tool for cleaning long nozzles of steel ladles, including refractory clay, a groove on the upper surface of the refractory clay, and a partition plate. The partition plate has a through-hole of considerable thickness in its center. The bottom surface of the partition plate coincides with the upper surface of the refractory clay. The upper end of the through-hole is connected to an oxygen pipe, and the lower end is connected to the groove. Multiple vent holes are formed inside the refractory clay, connecting the groove and the lower surface of the refractory clay. This invention's multiple vent holes ensure that oxygen thoroughly cleans the attached oxides along the inner wall of the long nozzle, while allowing the cleaned oxides to flow down the inner wall, which helps prevent backflow of airflow and molten oxides, extending the service life of the long nozzle. The partition plate effectively blocks the yellow smoke generated during cleaning, preventing environmental pollution. During cleaning, the operator only needs to place the tool at the upper opening of the long nozzle and open the oxygen valve to purge for 1-2 minutes, resulting in low labor intensity and preventing operators from being burned.

[0004] The ladle nozzle cleaning tool disclosed in the aforementioned document has a fixed vent hole, which prevents it from cleaning the deep parts of the nozzle from all angles and from absorbing the flue gas generated during cleaning. As a result, the tool is not very effective. Therefore, a ladle nozzle cleaning tool is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a steel ladle long nozzle cleaning tool. By rotating the rotating tube while moving up and down, it can clean the deep part of the long nozzle from all directions. The flue gas generated during cleaning can be pumped into the flue gas treatment terminal for treatment, and the use effect is good.

[0006] This utility model is implemented as follows: a steel ladle long nozzle washing tool includes refractory clay, a lifting mechanism and a rotating mechanism. The outer wall of the refractory clay is fixedly connected to an isolation plate, the inside of the refractory clay is rotatably connected to a sleeve, the inside of the sleeve is slidably connected to a rotating tube, the inner wall of the sleeve has two symmetrically distributed keyways, the outer wall of the rotating tube is fixedly connected to two key bars that match the keyways, and the upper end of the rotating tube is rotatably connected to a fixed tube through a rotating joint.

[0007] The refractory mortar has an adsorption chamber inside, and multiple ventilation holes communicating with the adsorption chamber are opened through the lower end face of the refractory mortar. An air pump is installed on the upper end face of the refractory mortar, and the air inlet of the air pump is connected to the adsorption chamber.

[0008] As a preferred embodiment of the steel ladle long nozzle washing tool of this utility model, the lifting mechanism includes a first servo motor, a threaded rod, a slide rod, a fixing plate, and a sliding plate. The first servo motor is installed on the upper end face of the isolation plate. The threaded rod is fixedly connected to the output end of the first servo motor. The slide rod is fixedly connected to the upper end face of the isolation plate. The fixing plate is fixedly connected to the upper end face of the slide rod and rotatably connected to the threaded rod. The sliding plate is threadedly connected to the outer wall of the threaded rod. The slide rod and the sliding plate are slidably connected. The fixing tube is fixedly connected to the sliding plate.

[0009] As a preferred embodiment of the steel ladle long nozzle washing tool of this utility model, the rotating mechanism includes a second servo motor, a first gear and a second gear. The second servo motor is installed on the upper end face of the refractory clay, the first gear is fixedly connected to the output end of the second servo motor, and the second gear is fixedly connected to the outer wall of the sleeve and meshes with the first gear.

[0010] As a preferred embodiment of the steel ladle long nozzle washing tool of this utility model, the refractory clay is in the shape of a frustum with a larger upper end and a smaller lower end.

[0011] As a preferred embodiment of the steel ladle long nozzle washing tool of this utility model, the rotating tube is L-shaped.

[0012] In a preferred embodiment of the steel ladle long nozzle washing tool of this utility model, the upper end of the fixed tube is configured as a flexible hose.

[0013] As a preferred embodiment of the steel ladle long nozzle washing tool of this utility model, the outer wall of the sleeve is welded with two limiting rings.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This steel ladle long nozzle cleaning tool, through the cooperation of a first servo motor, threaded rod, slide rod, slide plate, fixed tube, rotating joint, second servo motor, first gear and second gear, can drive the rotating tube to rotate and move up and down at the same time, so as to clean the depth of the long nozzle in all directions. It can also pump the flue gas generated by the cleaning into the flue gas treatment terminal for treatment through an air pump, and the use effect is good. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is an overall structural diagram of a steel ladle long nozzle washing tool according to the present invention;

[0018] Figure 2 This is a front sectional view of a steel ladle long nozzle washing tool according to this utility model;

[0019] Figure 3 This is a structural diagram of the sleeve of this utility model;

[0020] Figure 4 This is a structural diagram of the rotating tube of this utility model.

[0021] The markings in the diagram are: 1. Refractory mortar; 2. Isolation plate; 3. Sleeve; 4. Rotating tube; 5. Fixed tube; 6. Rotary joint; 7. Keyway; 8. Key bar; 9. First servo motor; 10. Threaded rod; 11. Slide rod; 12. Fixed plate; 13. Adsorption chamber; 14. Vent hole; 15. Air pump; 16. Slide plate; 17. Second servo motor; 18. First gear; 19. Second gear. Detailed Implementation

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0023] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0024] Please see Figure 1-4A steel ladle long nozzle washing tool includes refractory clay 1, a lifting mechanism and a rotating mechanism. An isolation plate 2 is fixedly connected to the outer wall of the refractory clay 1. A sleeve 3 is rotatably connected to the inside of the refractory clay 1. A rotating tube 4 is slidably connected to the inside of the sleeve 3. Two symmetrically distributed keyways 7 are opened on the inner wall of the sleeve 3. Two key bars 8 that match the keyways 7 are fixedly connected to the outer wall of the rotating tube 4. A fixed tube 5 is rotatably connected to the upper end of the rotating tube 4 through a rotating joint 6.

[0025] The refractory mortar 1 has an adsorption chamber 13 inside. The lower end face of the refractory mortar 1 has multiple vent holes 14 that communicate with the adsorption chamber 13. An air pump 15 is installed on the upper end face of the refractory mortar 1, and the air inlet of the air pump 15 is connected to the adsorption chamber 13.

[0026] In this embodiment: the upper end of the fixed pipe 5 is connected to the oxygen supply equipment. The lifting mechanism can drive the rotating pipe 4 to move up and down, and the rotating mechanism can drive the rotating pipe 4 to rotate. The rotating pipe 4 can move up and down at the same time as it rotates, so as to carry out all-round washing of the deep part of the long water outlet. The air pump 15 is started, and the air pump 15 draws the flue gas generated by the washing in the long water outlet into the adsorption chamber 13, and pumps it into the flue gas treatment terminal for treatment before being discharged, effectively avoiding environmental pollution.

[0027] As a technical optimization of this utility model, the lifting mechanism includes a first servo motor 9, a threaded rod 10, a slide rod 11, a fixing plate 12, and a sliding plate 16. The first servo motor 9 is installed on the upper end face of the isolation plate 2. The threaded rod 10 is fixedly connected to the output end of the first servo motor 9. The slide rod 11 is fixedly connected to the upper end face of the isolation plate 2. The fixing plate 12 is fixedly connected to the upper end face of the slide rod 11 and rotatably connected to the threaded rod 10. The sliding plate 16 is threadedly connected to the outer wall of the threaded rod 10. The slide rod 11 and the sliding plate 16 are slidably connected. The fixing tube 5 is fixedly connected to the sliding plate 16.

[0028] In this embodiment: the first servo motor 9 is started, and the first servo motor 9 drives the threaded rod 10 to rotate back and forth through forward and reverse rotation, which in turn drives the slide plate 16 to move up and down along the slide rod 11. The slide plate 16 further drives the fixed tube 5 to move up and down, and then drives the rotating tube 4 to move up and down through the rotating joint 6, so that the rotating tube 4 can perform washing at different depths of the long water nozzle.

[0029] As a technical optimization of this utility model, the rotating mechanism includes a second servo motor 17, a first gear 18, and a second gear 19. The second servo motor 17 is installed on the upper end face of the refractory mud 1, the first gear 18 is fixedly connected to the output end of the second servo motor 17, and the second gear 19 is fixedly connected to the outer wall of the sleeve 3 and meshes with the first gear 18.

[0030] In this embodiment: the second servo motor 17 is started, the second servo motor 17 drives the first gear 18 to rotate, and then drives the sleeve 3 to rotate through the second gear 19. The sleeve 3 further drives the rotating tube 4 to rotate through the keyway 7 and the key bar 8, so that the long water nozzle can be washed in all directions.

[0031] As a technical optimization of this utility model, the refractory clay 1 is in the shape of a frustum with a larger upper end and a smaller lower end.

[0032] In this embodiment, by setting the refractory mortar 1 into a frustum shape with a larger top and a smaller bottom, it is easy to seal the top of the long nozzle and prevent the flue gas from escaping.

[0033] As a technical optimization of this utility model, the rotating tube 4 is L-shaped.

[0034] In this embodiment: by setting the rotating tube 4 to an L-shape, it is possible to perform all-round washing of the long water inlet when the rotating tube 4 rotates.

[0035] As a technical optimization of this utility model, the upper end of the fixed tube 5 is set as a flexible tube.

[0036] In this embodiment: by setting the upper end of the fixing tube 5 as a flexible tube, it is easy for the fixing tube 5 to move up and down.

[0037] As a technical optimization of this utility model, two limiting rings are welded to the outer wall of the sleeve 3.

[0038] In this embodiment, two limiting rings are welded to the outer wall of the sleeve 3 to prevent the sleeve 3 from falling out of the refractory mud 1.

[0039] The working principle and usage process of this utility model are as follows: First, the lower end of the refractory clay 1 is inserted into the long water inlet, sealing the upper end of the inlet. Then, oxygen is introduced into the fixed pipe 5. The oxygen is sprayed outwards through the lower end of the rotating pipe 4, blowing towards the oxides adhering to the inner wall of the lower part of the long water inlet, thus burning and washing the oxides. Simultaneously, the air pump 15 is started. The air pump 15 draws the flue gas generated during the burning and washing inside the long water inlet into the adsorption chamber 13, and then pumps it into the flue gas treatment terminal for treatment before discharge, effectively avoiding environmental pollution. Then, the first servo motor 9 and the second... The servo motor 17 drives the threaded rod 10 to reciprocate through the forward and reverse rotation of the first servo motor 9, which in turn drives the slide plate 16 to move up and down along the slide rod 11. The slide plate 16 further drives the fixed tube 5 to move up and down, which in turn drives the rotating tube 4 to move up and down through the rotating joint 6, so that the rotating tube 4 can perform washing at different depths of the long water nozzle. The second servo motor 17 drives the first gear 18 to rotate, which in turn drives the sleeve 3 to rotate through the second gear 19. The sleeve 3 further drives the rotating tube 4 to rotate through the keyway 7 and the key bar 8, so that the long water nozzle can be washed in all directions, and the effect is good.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for washing long nozzles of a steel ladle, characterized in that: The refractory mortar (1), lifting mechanism and rotating mechanism are included. The outer wall of the refractory mortar (1) is fixedly connected to the isolation plate (2). The inner wall of the refractory mortar (1) is rotatably connected to the sleeve (3). The inner wall of the sleeve (3) is slidably connected to the rotating tube (4). The inner wall of the sleeve (3) has two symmetrically distributed keyways (7). The outer wall of the rotating tube (4) is fixedly connected to two key bars (8) that match the keyways (7). The upper end of the rotating tube (4) is rotatably connected to the fixed tube (5) through the rotating joint (6). The refractory mortar (1) has an adsorption chamber (13) inside. The lower end face of the refractory mortar (1) has multiple vent holes (14) that communicate with the adsorption chamber (13). An air pump (15) is installed on the upper end face of the refractory mortar (1). The air inlet of the air pump (15) is connected to the adsorption chamber (13).

2. The ladle long nozzle washing tool according to claim 1, characterized in that: The lifting mechanism includes a first servo motor (9), a threaded rod (10), a slide rod (11), a fixing plate (12), and a sliding plate (16). The first servo motor (9) is installed on the upper end face of the isolation plate (2). The threaded rod (10) is fixedly connected to the output end of the first servo motor (9). The slide rod (11) is fixedly connected to the upper end face of the isolation plate (2). The fixing plate (12) is fixedly connected to the upper end face of the slide rod (11) and rotatably connected to the threaded rod (10). The sliding plate (16) is threadedly connected to the outer wall of the threaded rod (10). The slide rod (11) and the sliding plate (16) are slidably connected. The fixing tube (5) is fixedly connected to the sliding plate (16).

3. The ladle long nozzle washing tool according to claim 1, characterized in that: The rotating mechanism includes a second servo motor (17), a first gear (18), and a second gear (19). The second servo motor (17) is installed on the upper end face of the refractory mud (1). The first gear (18) is fixedly connected to the output end of the second servo motor (17). The second gear (19) is fixedly connected to the outer wall of the sleeve (3) and meshes with the first gear (18).

4. The ladle long nozzle washing tool according to claim 1, characterized in that: The refractory mortar (1) is in the shape of a frustum, which is larger at the top and smaller at the bottom.

5. A ladle long nozzle washing tool according to claim 1, characterized in that: The rotating tube (4) is L-shaped.

6. A ladle long nozzle washing tool according to claim 1, characterized in that: The upper end of the fixed tube (5) is configured as a flexible tube.

7. A ladle long nozzle washing tool according to claim 1, characterized in that: The outer wall of the sleeve (3) is welded with two limiting rings.

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