Baking device suitable for continuous casting off-line submersed nozzle

Abstract

The utility model provides a baking device suitable for a continuous casting off-line submersed nozzle, and relates to the technical field of metal manufacturing. The baking device comprises a baking gun, a movable frame and a supporting seat, the baking gun is horizontally clamped to the top of the supporting seat, a hanging support used for hanging the submersed nozzle is arranged at the top of the movable frame, and the movable frame is used for moving towards the supporting seat to abut against the supporting seat for positioning. And the baking distance between the baking nozzle of the baking gun and the submersed nozzle is consistent with that between the baking nozzle of the baking gun and the submersed nozzle. The stability of the submersed nozzle during baking is improved through the hanging support, the supporting base can support the baking gun to overcome downward bending deformation of the baking gun caused by high temperature, and therefore the baking accuracy of the baking gun is improved, and the baking effect of the baking gun is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal manufacturing, in particular to a baking device suitable for an offline immersion nozzle of continuous casting. Background Art

[0002] The submerged nozzle plays a very important role in the continuous casting process. It can prevent the qualified molten steel from causing secondary oxidation during the pouring process, adjust the flow rate and flow state of the molten steel from the tundish into the crystallizer, prevent the protective slag in the crystallizer from being drawn into the qualified slab, and optimize the distribution of the molten steel in the crystallizer.

[0003] At present, during the production process of continuous casting, the submerged nozzle is often baked in advance by planned replacement. The baking time of the submerged nozzle is generally controlled at about 2 hours, and the baking temperature must reach more than 1000 degrees. This causes the baking gun of the baking machine to be deformed by heat under the action of long-term high-temperature baking and gravity, resulting in deviations in baking distance and baking angle, resulting in abnormal baking of the submerged nozzle or substandard baking temperature, causing abnormal rupture of the submerged nozzle, etc., thereby reducing the baking effect of the baking machine. Utility Model Content

[0004] The problem solved by the utility model is how to improve the baking effect of a baking gun.

[0005] In order to solve the above-mentioned problems, the utility model provides a baking device suitable for an offline submerged nozzle of continuous casting, comprising a baking gun, a movable frame and a support seat, wherein the baking gun is horizontally clamped on the top of the support seat, and a hanging bracket for hanging the submerged nozzle is provided on the top of the movable frame, and the movable frame is used to move toward the support seat until it is abutted against the support seat to ensure that the baking burner of the baking gun and the submerged nozzle meet the baking distance.

[0006] Optionally, the mobile frame includes a frame body and a plurality of wheels installed at the bottom of the frame body, the suspension bracket is connected to the top of the frame body, and a fire-blocking structure is provided at any of the wheels.

[0007] Optionally, the mobile frame further comprises a fire baffle, which is connected to the frame body and is located below the suspension bracket, so that the immersion water inlet is located between the fire baffle and the baking burner.

[0008] Optionally, the movable frame is snap-connected to the support seat.

[0009] Optionally, the movable frame further comprises an ignition cover, on which an ignition hole is arranged, the ignition hole is used to communicate with the immersion water inlet, and the ignition cover is used to cover the plate structure of the immersion water inlet.

[0010] Optionally, one side end of the ignition cover is rotatably connected to the suspension bracket.

[0011] Optionally, a handle is provided on the ignition cover.

[0012] Optionally, a handrail is provided on the frame body.

[0013] Optionally, the frame body and the suspension bracket are slidably connected via a column and a sleeve, the column is slidably connected to the sleeve along a vertical direction, and a locking bolt is provided on the sleeve to fix the column by tightening the locking bolt.

[0014] Optionally, the support seat is a frame structure made by welding high-temperature resistant steel plates.

[0015] Compared with the prior art, the utility model is suitable for a baking device of an offline immersion nozzle of continuous casting. The immersion nozzle is suspended on a hanging bracket, and the hanging bracket is installed on the top of a movable frame. The immersion nozzle can be driven to move by the movable frame, thereby improving the movement efficiency of the immersion nozzle, and the movable frame is moved toward the support seat until it is against the support seat, so that the baking burner of the baking gun and the immersion nozzle meet the baking distance, and the baking gun is clamped on the top of the support seat, so that the baking gun can bake the immersion nozzle under the support limit of the support seat. In this way, the movable frame and the hanging bracket can ensure the stability of the distance between the immersion nozzle and the baking gun during baking, and the support seat can support the baking gun to overcome the downward bending deformation of the baking gun caused by high temperature, thereby improving the baking accuracy of the baking gun, and further, improving the baking effect of the baking gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a baking device suitable for an offline submerged nozzle of continuous casting in an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 1-baking gun; 11-baking burner; 2-movable frame; 21-suspension bracket; 22-frame body; 23-fire baffle; 3-support seat; 4-immersion water inlet; 41-plate structure; 42-tube structure; 43-baking port; 5-ignition cover. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In the accompanying drawings, the Z axis represents the vertical position, and the positive direction of the Z axis (that is, the direction in which the arrow of the Z axis points) represents the upper side, and the negative direction of the Z axis (that is, the direction opposite to the positive direction of the Z axis) represents the lower side; in the accompanying drawings, the Y axis represents the front and rear positions, and the positive direction of the Y axis (that is, the direction in which the arrow of the Y axis points) represents the front side, and the negative direction of the Y axis (that is, the direction opposite to the positive direction of the Y axis) represents the rear side; in the accompanying drawings, the X axis represents the horizontal position, and the positive direction of the X axis (that is, the direction in which the arrow of the X axis points) represents the right side, and the negative direction of the X axis (that is, the direction opposite to the positive direction of the X axis) represents the left side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0022] Combination Figure 1 As shown, the utility model provides a baking device suitable for an offline immersion nozzle of continuous casting, comprising a baking gun 1, a movable frame 2 and a support seat 3. The baking gun 1 is horizontally clamped on the top of the support seat 3, and a hanging bracket 21 for hanging the immersion nozzle 4 is provided on the top of the movable frame 2. The movable frame 2 is used to move toward the support seat 3 until it is abutted and positioned with the support seat 3, so that the baking burner 11 of the baking gun 1 and the immersion nozzle 4 meet the baking distance.

[0023] Specifically, the immersion nozzle 4 includes a plate structure 41 and a tube structure 42 installed on the plate structure 41. A baking port 43 is provided at one end of the tube structure 42 away from the plate structure 41. The baking port 43 is communicated with the inside of the tube structure 42. The plate structure 41 is communicated with the inside of the tube structure 42. The baking port 43 is located at the baking side of the immersion nozzle 4. The support seat 3 can be fixed on the ground, and a groove-shaped positioning structure is provided at the upper end of the support seat 3. The suspension bracket 21 is installed on the top of the mobile frame 2, and a suspension through hole or a suspension groove is provided on the suspension bracket 21. The suspension through hole or the suspension groove can be formed by a space surrounded by two parallel angle steels. When baking, the plate structure 41 of the immersion nozzle 4 is suspended at the suspension through hole, and the gun rod of the baking gun 1 is horizontally clamped on the groove-shaped positioning structure of the support seat 3, so that the baking gun 1 is supported by the support seat 3 to overcome the deformation of the baking gun 1 caused by gravity and a long-term high temperature environment. The movable frame 2 is pushed to move the movable frame 2 toward the support seat 3, and when the movable frame 2 is against the support seat 3, the baking side (baking port 43) of the immersion water inlet 4 is opposite to the baking burner 11, and there is a certain use distance between the baking burner 11, and the baking effect is best under this use distance. For example, the two ends of the support seat 3 in the width direction (Y axis) are respectively provided with extension structures, and the movable frame 2 is against the two extension structures. After the movable frame 2 stops, the distance between the baking side of the immersion water inlet 4 and the baking burner 11 is 100 mm, and the baking burner 11 is neither too close to the baking side (baking port 43) to cause the baking side to be smoked and oxidized, nor too far from the baking side (baking port 43) to cause insufficient baking effect, thereby ensuring the baking effect of the baking burner 11.

[0024] Therefore, in the present embodiment, the immersion nozzle 4 is suspended on the suspension bracket 21, and the suspension bracket 21 is installed on the top of the movable frame 21, so that the movement efficiency of the immersion nozzle 4 can be improved by driving the immersion nozzle 4 through the movable frame 21, and the movable frame 2 is moved toward the support seat 3 until it is against the support seat 3, so that the baking burner 11 of the baking gun 1 and the immersion nozzle 4 meet the baking distance, and the baking gun 1 is clamped on the top of the support seat 3, so that the baking gun 1 can bake the immersion nozzle 4 under the support limit of the support seat 3, so that the movable frame 21 and the suspension bracket 21 can ensure the stability of the distance between the immersion nozzle 4 and the baking gun 1 during baking, and the support seat 3 can support the baking gun 1 to overcome the downward bending deformation of the baking gun 1 caused by high temperature, thereby improving the baking accuracy of the baking gun 1, and then, improving the baking effect of the baking gun 1.

[0025] Optionally, combined Figure 1 As shown, the mobile frame 2 includes a frame body 22 and a plurality of wheels installed at the bottom of the frame body 22, a suspension bracket 21 is connected to the top of the frame body 22, and a fire blocking structure is provided at any wheel.

[0026] Specifically, the suspension bracket 21 is connected to the top of the vehicle frame body 22, and multiple wheels are installed at the bottom of the vehicle frame body 22, and a fire-blocking structure is provided at any wheel, wherein the fire-blocking structure can be a protective cover structure supported by a refractory material, or can be made of refractory steel plates welded together. In this way, the suspension bracket 21 is connected to the top of the vehicle frame body 22, and multiple wheels are installed at the bottom of the vehicle frame body 22, and a fire-blocking structure is provided at any wheel. In this way, the fire-blocking structure can reduce the shortening of the wheel life of the trolley due to the heating of the wheel caused by the high local temperature during baking, thereby extending the service life of the wheel.

[0027] Optionally, combined Figure 1 As shown, the movable frame 2 further includes a fire baffle 23 , which is connected to the frame body 22 and is located below the suspension bracket 21 , so that the immersion water inlet 4 is located between the fire baffle 23 and the baking burner 11 .

[0028] Specifically, the upper end of the fire baffle 23 is welded to the frame body 22 and is located below the suspension bracket 21, so that the immersion water inlet 4 is located between the fire baffle 23 and the baking burner 11, so that the heat ejected by the baking burner 11 is blocked by the fire baffle 23 to prevent the heat ejected by the baking burner 11 from burning the operator.

[0029] Optionally, combined Figure 1 As shown, the movable frame 2 is engaged with the supporting seat 3 .

[0030] Specifically, the frame body 22 or the wheel frame of the wheel is provided with an insertion strip, and corresponding to the insertion strip, a slot is provided at the position where the support seat 3 and the frame body 22 abut against each other, and the insertion strip and the slot are respectively distributed along the width direction (Y axis) of the support seat 3 and the frame body 22. During baking, the insertion strip is correspondingly engaged with the slot to achieve relative fixation of the frame body 22 and the support seat 3, and ensure that the distance between the baking burner 11 and the baking side of the immersion nozzle 4 remains unchanged.

[0031] In this way, by engaging the movable frame 2 with the support base 3, the support base 3 can guide the movable frame 2 during baking, so as to improve the stability of the movable frame 2 during baking.

[0032] Optionally, combined Figure 1 As shown, the movable frame 2 further comprises an ignition cover 5 , on which an ignition hole is arranged. The ignition hole is used to communicate with the immersion nozzle 4 , and the ignition cover 5 is used to cover the plate structure 41 of the immersion nozzle 4 .

[0033] Specifically, the ignition hole on the ignition cover 5 is consistent with the aperture of the through hole of the immersion water inlet 4. During baking, the high-temperature gas is discharged through the immersion water inlet 4 and the ignition hole, and the ignition cover 5 covers the upper end surface of the plate structure 41 of the immersion water inlet 4 to prevent the plate structure 41 from direct contact with the air.

[0034] In this way, an ignition hole is provided on the ignition cover 5, and the ignition hole is used to communicate with the immersion water outlet 4. The ignition cover 5 is used to cover the plate structure 41 of the immersion water outlet 4. The ignition hole enables the high-temperature gas to be discharged from the inside of the immersion water outlet 4. At the same time, the ignition cover 5 prevents the plate structure 41 from directly contacting with the air during baking. In this way, during baking, the ignition cover 5 prevents the plate structure 41 of the immersion water outlet 4 from oxidizing.

[0035] Optionally, combined Figure 1 As shown, one side end of the ignition cover 5 is rotatably connected to the suspension bracket 21.

[0036] Specifically, one side end of the ignition cover 5 is rotatably connected to the upper end of the suspension bracket 21 via a rotation shaft. After the submerged nozzle is suspended on the suspension bracket 21, the ignition cover 5 is rotated to cover the plate structure 41 of the submerged nozzle.

[0037] In this way, the ignition cover 5 is rotatably connected to the suspension bracket 21 through one side end, so that the ignition cover 5 only makes rotational movement on the suspension bracket 21, and does not move in the horizontal or vertical direction, thereby ensuring the accuracy of the covering position of the plate structure 41 of the submerged water outlet before and after the ignition cover 5 rotates.

[0038] Optionally, combined Figure 1 As shown, the ignition cover 5 is provided with a handle.

[0039] Specifically, the handle is a columnar structure, one end of which is welded to the side end of the ignition cover 5 , and the other end of which extends away from the ignition cover 5 .

[0040] In this way, by providing a handle on the ignition cover 5, the handle is easy to grasp, and the rotation efficiency of the ignition cover 5 can be improved through the handle.

[0041] Optionally, combined Figure 1 As shown, the frame body 22 is provided with an armrest.

[0042] Specifically, the handrail is in a U-shaped structure, and the two ends of the U-shaped handrail are welded to the left end of the frame body 22 and extend upward as a whole. In this way, the frame body 22 is provided with the handrail, which can facilitate manual pushing of the frame body 22.

[0043] Optionally, combined Figure 1As shown, the frame body 22 and the suspension bracket 21 are slidably connected via a column and a sleeve, the column is slidably connected to the sleeve along the vertical direction, and a locking bolt is provided on the sleeve to fix the column by tightening the locking bolt.

[0044] Specifically, the sleeve is arranged vertically, with the mouth of the sleeve facing upward, the bottom of the sleeve is welded to the upper end of the frame body 22, the column extends into the sleeve and is slidably connected with the sleeve, the upper end of the column is connected to the lower end of the suspension bracket 21, and an internal threaded hole is provided on the side wall of the sleeve, and the internal threaded hole is connected to the inside of the sleeve. When the column slides upward, the locking bolt is tightened and applies a resisting force to the column along the radial direction of the column. Under the action of the resisting force, the locking bolt and the sleeve fix the suspension bracket 21.

[0045] In this way, the column is slidably connected with the sleeve in the vertical direction, and the column and the sleeve are arranged between the frame body 22 and the suspension bracket 21, so that the suspension bracket 21 can be moved relative to the frame 2 to adjust the vertical position, and the locking bolts arranged on the sleeve are used to fix the column and fix the suspension bracket 21 after vertical movement. In this way, the fixed position of the suspension bracket 21 in the vertical direction is adjustable, thereby meeting the baking needs of immersion water nozzles of different lengths.

[0046] Optionally, combined Figure 1 As shown, the support seat 3 is a frame structure made of high temperature resistant steel plates welded together.

[0047] Specifically, the support seat 3 includes a plurality of high temperature resistant steel plates, the plurality of high temperature resistant steel plates are parallel to each other, and adjacent high temperature resistant steel plates are also welded by high temperature resistant steel plates, such as Figure 1 In this way, by making the support seat 3 a frame structure made of high-temperature resistant steel plates welded together, the high-temperature resistance of the support seat 3 can be improved to avoid deformation of the support seat 3 caused by long-term high-temperature baking, thereby extending the service life of the support seat 3.

[0048] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A baking device suitable for offline continuous casting submerged nozzle, characterized in that: The invention comprises a baking gun (1), a movable frame (2) and a support seat (3); the baking gun (1) is horizontally clamped on the top of the support seat (3); a hanging bracket (21) for hanging an immersion nozzle (4) is arranged on the top of the movable frame (2); the movable frame (2) is used to move toward the support seat (3) to abut against the support seat (3) so that the baking burner (11) of the baking gun (1) and the immersion nozzle (4) meet the baking distance.

2. The baking device for offline submerged nozzle of continuous casting according to claim 1 is characterized in that: The mobile frame (2) comprises a frame body (22) and a plurality of wheels mounted on the bottom of the frame body (22); the suspension bracket (21) is connected to the top of the frame body (22); and a fire-blocking structure is provided at any of the wheels.

3. The baking device for offline submerged nozzle of continuous casting according to claim 2 is characterized in that: The movable frame (2) further comprises a fire baffle (23), wherein the fire baffle (23) is connected to the frame body (22) and is located below the suspension bracket (21), so that the immersion water inlet (4) is located between the fire baffle (23) and the baking burner (11).

4. The baking device for offline submerged nozzle of continuous casting according to claim 1 is characterized in that: The movable frame (2) is clamped with the support seat (3).

5. The baking device for offline submerged nozzle of continuous casting according to claim 2 is characterized in that: The movable frame (2) further comprises an ignition cover (5), wherein the ignition cover (5) is provided with an ignition hole, wherein the ignition hole is used to communicate with the immersion water port (4), and the ignition cover (5) is used to cover the plate structure (41) of the immersion water port (4).

6. The baking device for offline submerged nozzle of continuous casting according to claim 5 is characterized in that: One side end of the ignition cover (5) is rotatably connected to the suspension bracket (21).

7. The baking device for offline submerged nozzle of continuous casting according to claim 6 is characterized in that: The ignition cover (5) is provided with a handle.

8. The baking device for offline submerged nozzle of continuous casting according to claim 2 is characterized in that: The frame body (22) is provided with a handrail.

9. The baking device for offline submerged nozzle of continuous casting according to claim 2, characterized in that: The frame body (22) and the suspension bracket (21) are slidably connected via a column and a sleeve, the column is slidably connected to the sleeve along a vertical direction, and a locking bolt is provided on the sleeve so that the column can be fixed by tightening the locking bolt.

10. The baking device for offline submerged nozzle of continuous casting according to claim 1, characterized in that: The support seat (3) is a frame structure made by welding high-temperature resistant steel plates.

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