Device for preventing continuous casting billet nozzle from sticking steel

Abstract

The utility model discloses a device for preventing a continuous casting billet nozzle from sticking steel, which belongs to the technical field of steel smelting and comprises an inverted V-shaped top cover and two vertically arranged side plates, and the two side plates are bilaterally symmetrical and arranged at intervals. The tops of the two side plates are connected with the top cover, and the two side plates and the top cover form a protection structure covering the top of the continuous casting square billet nozzle. A limiting column used for being inserted between two connecting pipes on the rear side of the continuous casting square billet nozzle is vertically arranged in the middle of the inner side of the top cover and located on the rear side of the middle of the inner side of the top cover. The continuous casting square billet nozzle can solve the problem that the continuous casting square billet nozzle is easily stuck by leaked molten steel in the production process of continuous casting square billets.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel smelting technology, especially relates to a device for preventing steel sticking to continuous casting square billet nozzle. BACKGROUND

[0002] The square billet continuous casting production process is as follows: qualified molten steel after smelting treatment is transported to the ladle tundish turntable of the continuous casting machine through a ladle. The turntable accurately aims the ladle at the tundish, and then opens the ladle slide nozzle to allow the molten steel to flow smoothly into the tundish. The molten steel in the tundish enters the crystallizer through the submerged nozzle, and the molten steel rapidly cools and solidifies in the crystallizer to form a certain thickness of a shell, and at the same time, the cooling water device provided around the crystallizer sprays and cools the shell to ensure that the shell can uniformly and rapidly solidify. After the shell gradually thickens in the secondary cooling zone, the strand straightening device is started to smoothly pull out the casting billet from the crystallizer. During the pulling out process of the casting billet, the casting billet passes through the secondary cooling section for secondary cooling, further promoting the internal solidification of the casting billet. After the straightening treatment, the casting billet enters the cutting area and is accurately cut by the cutting equipment according to the pre-set length. The cut square billet is transported to the subsequent cooling link, storage area or directly hot sent to the rolling workshop for subsequent rolling processing. In the entire square billet continuous casting production process, the temperature, chemical composition, strand pulling speed, cooling water volume and many other key process parameters of the molten steel need to be strictly controlled to ensure that the finally produced square billet has excellent quality and the entire production process can maintain high efficiency.

[0003] As shown in Figures 1-2 In the square billet continuous casting production process, the continuous casting square billet nozzle 1 of the secondary cooling section is located directly below the crystallizer 4, the main body of the continuous casting square billet nozzle is in the shape of a cuboid, and the rear side thereof is connected to the spraying pipe 3 through two spaced apart connecting pipes 2. In the continuous casting square billet production process, the crystallizer leakage accident is difficult to avoid. When the crystallizer leaks, the molten steel will flow down the secondary cooling chamber and stick to the continuous casting square billet nozzle distributed in the secondary cooling section. The stuck nozzle needs to be manually cleaned online, which has safety hazards and affects the time for restarting the flow. UTILITY MODEL CONTENTS

[0004] The utility model provides a device for preventing steel sticking to continuous casting square billet nozzle to solve the problem that the continuous casting square billet nozzle is easily stuck by the leaked molten steel in the continuous casting square billet production process.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a device for preventing steel sticking to continuous casting square billet nozzle, which comprises a top cover in the shape of an inverted V and two vertically arranged side plates, the two side plates being symmetrically arranged and spaced apart; the top of each of the two side plates is connected to the top cover to form a protective structure that covers the top of the continuous casting square billet nozzle together with the top cover; a limiting column for being inserted between the two connecting pipes at the back of the continuous casting square billet nozzle is vertically arranged at the middle of the inner side of the top cover, and the limiting column is located at the back of the middle of the inner side of the top cover.

[0007] Further, the top cover comprises two inclined plates, the higher side of each of the two inclined plates being welded together, and the lower side of each of the two inclined plates being welded to a side plate.

[0008] Further, the inclined plates and the side plates are made of steel plates.

[0009] Further, the top end of the limiting column is provided with an inverted V-shaped matching end, and the limiting column is welded to the inner side of the top cover through the inverted V-shaped matching end.

[0010] Further, the length of the limiting column is 55-65 mm.

[0011] Further, the lower side of each of the two inclined plates protrudes outward relative to the side plate.

[0012] Further, each of the two side plates is provided with a clamping structure, and the clamping structure is located in the shielding area of the top cover; the clamping structure comprises a screw rod, a knob and a clamping plate, the middle of the screw rod is vertically arranged through the side plate and is threadedly connected to the side plate, the knob is fixedly installed at the outward end of the screw rod, and the clamping plate is rotatably installed at the inward end of the screw rod.

[0013] Further, the clamping structure further comprises a limiting rod, one end of the limiting rod is connected to the clamping plate, and the other end of the limiting rod is movably arranged through the side plate.

[0014] Further, the clamping plate for clamping one side of the continuous casting square billet nozzle is provided with a buffer block, and the size of the buffer block is the same as that of the clamping plate.

[0015] Further, the buffer block is made of silica gel or rubber.

[0016] Thanks to the above technical scheme, the utility model has the following advantages:

[0017] 1. The two side plates and the top cover form a protective structure that covers the top of the continuous casting square billet nozzle, which can cover the continuous casting square billet nozzle and does not affect the water outlet angle of the continuous casting square billet nozzle; when molten steel leaks, the protective structure can block the molten steel to prevent the molten steel from falling on the continuous casting square billet nozzle and prevent the continuous casting square billet nozzle from sticking to steel.

[0018] 2. The top cover is inverted V-shaped, when the molten steel accident occurs, the molten steel flows away through the inverted V-shaped top cover, so that the molten steel is not easy to condense and block on the top cover, and it is more difficult to stick to the steel relative to the plane structure, so the device generally does not need to be replaced during use, unless the device is replaced in the case of serious sticking to the steel.

[0019] 3. The utility model discloses a limiting post is arranged in the middle part of the inside of top cover vertically, when using, the limiting post is inserted between the two connecting pipes of the rear side of continuous casting billet nozzle, thereby limiting the forward movement of the device, plus the two side plates are respectively pasted on the left and right sides of the continuous casting billet nozzle, so that the device can only be disassembled and assembled from the top of the nozzle, therefore, the device has good stability on the continuous casting billet nozzle.

[0020] 4. The utility model discloses still be provided with clamping structure on two side plates, through clamping structure is fixed to the left and right sides of continuous casting billet nozzle, further improve the stability of device on the continuous casting billet nozzle. For some continuous casting billet nozzle, because the surface is left with sticking to the steel, in the case that the distance between the two side plates is same with the length of continuous casting billet nozzle, it is difficult to install the device to the continuous casting billet nozzle. The utility model can solve this problem by setting up the clamping structure, the distance between the two side plates is greater than the length of continuous casting billet nozzle, the screw rod is rotated by the knob, the clamping plate is moved by the screw rod, by adjusting the distance between the two clamping plates, the device can be clamped and fixed on the continuous casting billet nozzle. In addition, the setting of clamping structure makes the device can also be installed on the continuous casting billet nozzle of different sizes, has good universality. DRAWINGS

[0021] Figure 1 It is the installation position schematic drawing of continuous casting billet nozzle in the prior art;

[0022] Figure 2 It is the connection schematic drawing between continuous casting billet nozzle and two connecting pipes;

[0023] Figure 3 It is the front view of the device of the utility model embodiment 1;

[0024] Figure 4 It is the bottom view of the device of the utility model embodiment 1;

[0025] Figure 5 It is the use schematic drawing of the device of the utility model embodiment 1;

[0026] Figure 6 It is the front view of the device of the utility model embodiment 2;

[0027] Figure 7 It is the use schematic drawing of the device of the utility model embodiment 2;

[0028] The components in the attached diagram are labeled as follows: 1-continuous casting billet nozzle, 2-connecting pipe, 3-spray pipe, 4-crystallizer, 5-sloping plate, 6-side plate, 7-limiting post, 8-screw, 9-knob, 10-clamping plate, 11-limiting rod, 12-buffer block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] like Figures 3-5 As shown, a device for preventing steel sticking to the nozzle of a continuous casting billet includes an inverted V-shaped top cover and two vertically arranged side plates 6. The two side plates 6 are symmetrical and spaced apart.

[0032] The tops of both side plates 6 are connected to the top cover, forming a protective structure that covers the top of the continuous casting billet nozzle 1. Specifically, the top cover includes two inclined plates 5, with the higher side of the two inclined plates 5 welded together and the lower side welded to the two side plates 6 respectively. Both the inclined plates 5 and the side plates 6 are steel plates.

[0033] A limiting post 7 is vertically installed on the inner center of the top cover for insertion between the two connecting pipes 2 on the rear side of the continuous casting billet nozzle 1. The limiting post 7 is located on the rear side of the inner center of the top cover. Specifically, the top of the limiting post 7 is provided with an inverted V-shaped mating end, which is welded to the inner side of the top cover. The length of the limiting post 7 is 55-65mm. In this embodiment, the length of the limiting post 7 is 60mm.

[0034] In use, the limiting post 7 is inserted between the two connecting pipes 2 on the rear side of the continuous casting billet nozzle 1, thereby restricting the forward movement of the device. In addition, the two side plates 6 are respectively attached to the left and right sides of the continuous casting billet nozzle 1, so that the device can only be disassembled and assembled from directly above the nozzle. Therefore, the device has good stability on the continuous casting billet nozzle 1.

[0035] This invention utilizes two side plates 6 and a top cover to form a protective structure that covers the top of the continuous casting billet nozzle 1. This structure effectively encloses the nozzle 1 without affecting its water outlet angle. When molten steel leaks, the protective structure blocks it, preventing it from falling onto the nozzle 1 and thus preventing steel adhesion. Furthermore, the top cover is inverted V-shaped. In the event of a leak, the molten steel flows away through the V-shaped cover, making it less prone to condensation and agglomeration on the cover. Compared to a flat structure, this design reduces the likelihood of steel adhesion. Therefore, this device generally does not require replacement during use, except in cases of severe steel adhesion.

[0036] Example 2

[0037] like Figures 6-7 As shown, based on Embodiment 1, in this embodiment, the lower side of the two inclined plates 5 of the top cover protrudes outward relative to the two side plates 6. Both side plates 6 are equipped with clamping structures located within the shielding area of ​​the top cover to prevent steel from sticking to the clamping structure. The clamping structure includes a screw 8, a knob 9, a clamping plate 10, and a limiting rod 11.

[0038] A side plate 6 is vertically inserted through the middle of the screw 8 and threadedly connected to the side plate 6. A knob 9 is fixedly installed on the outward end of the screw 8, and a clamping plate 10 is rotatably installed on the inward end of the screw 8. One end of a limiting rod 11 is vertically connected to the clamping plate 10, and the other end is movably inserted through the side plate 6. The limiting rod 11 is used to restrict the rotation of the clamping plate 10, so that the clamping plate 10 can only move horizontally.

[0039] In addition, a buffer block 12 can be provided on one side of the clamping plate 10 used to clamp the continuous casting billet nozzle 1. The size of the buffer block 12 is the same as that of the clamping plate 10. The material of the buffer block 12 is silicone or rubber. The buffer block 12 is elastic, which can increase the contact friction, improve the clamping effect, and protect the continuous casting billet nozzle 1.

[0040] This invention also incorporates a clamping structure on the two side plates 6. This clamping structure secures the left and right sides of the continuous casting billet nozzle 1, further improving the stability of the device on the nozzle. For some continuous casting billet nozzles 1, due to residual steel residue on the surface, it is difficult to install the device onto the nozzle 1 when the distance between the two side plates 6 is the same as the length of the nozzle 1. This invention solves this problem effectively by setting a clamping structure. The distance between the two side plates 6 is greater than the length of the nozzle 1. By rotating the screw 8 through the knob 9, the screw 8 moves the clamping plate 10. By adjusting the distance between the two clamping plates 10, the device can be clamped and fixed onto the nozzle 1. Furthermore, the clamping structure allows the device to be installed on continuous casting billet nozzles 1 of different sizes, providing good versatility.

[0041] The above description is a detailed description of the preferred and feasible embodiments of the present application, but the embodiments are not intended to limit the patent application scope of the present application. Any equivalent changes or modified changes completed under the technical spirit of the present application should belong to the patent scope covered by the present application.

Claims

1. A device for preventing sticking of a continuous casting billet nozzle, characterized by: The top cover is in inverted V shape, and two vertical side plates are symmetrically and spaced apart; the top of each side plate is connected with the top cover to form a protective structure covering the top of the continuous casting billet nozzle; a limiting column is vertically arranged at the middle of the inner side of the top cover for insertion between the two connecting pipes at the rear side of the continuous casting billet nozzle.

2. The device for preventing the sticking of steel to a continuous casting billet nozzle according to claim 1, characterized in that: The top cover comprises two inclined plates, the higher side of each inclined plate is welded together, and the lower side is welded with the two side plates respectively.

3. A device for preventing sticking of a nozzle of a continuous casting billet according to claim 2, characterized in that: The inclined plates and the side plates are steel plates.

4. The device for preventing the sticking of steel to a nozzle of a continuous casting billet according to claim 1, characterized in that: The top end of the limiting column is provided with an inverted V-shaped matching end, and the limiting column is welded with the inner side of the top cover through the inverted V-shaped matching end.

5. The device for preventing the sticking of steel to a nozzle of a continuous casting billet according to claim 1, characterized in that: The length of the limiting column is 55-65mm.

6. The device for preventing the sticking of steel to a continuous casting billet nozzle according to claim 2, characterized by: The lower side of each inclined plate is outwardly protruded relative to the two side plates.

7. A device for preventing sticking of a steel to a nozzle of a continuous casting billet according to claim 6, characterized in that: A clamping structure is arranged on each side plate, the clamping structure is located in the shielding area of the top cover; the clamping structure comprises a screw rod, a knob and a clamping plate, the middle part of the screw rod is vertically arranged through the side plate and is threadedly connected with the side plate, the knob is fixedly installed at the outward end of the screw rod, and the clamping plate is rotatably installed at the inward end of the screw rod.

8. The device for preventing the sticking of steel to a continuous casting billet nozzle according to claim 7, characterized by: The clamping structure further comprises a limiting rod, one end of the limiting rod is perpendicularly connected with the clamping plate, and the other end is movably arranged through the side plate.

9. The device for preventing the sticking of steel to a continuous casting billet nozzle according to claim 8, characterized in that: A buffer block is arranged on one side of the clamping plate for clamping the continuous casting billet nozzle, and the size of the buffer block is the same as that of the clamping plate.

10. The apparatus for preventing sticking of a continuous casting billet nozzle according to claim 9, wherein: The material of the buffer block is silica gel or rubber.

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