Anti-blocking nozzle for fan-shaped section of slab continuous casting machine

Abstract

The utility model relates to the technical field of nozzles, and discloses an anti-blocking nozzle for a fan-shaped section of a slab continuous casting machine, which comprises a spray head and a liquid guide cylinder, a communicated liquid inlet pipe is mounted on the side surface of the liquid guide cylinder, the spray head and the liquid guide cylinder are fixedly connected and communicated, and one end of the liquid guide cylinder far away from the spray head is connected with a detachable cap. The inner wall of the end, close to the nozzle, of the liquid guiding cylinder is connected with a filtering assembly, the side, close to the nozzle, of the filtering assembly is connected with a scraping assembly which is connected with the inner wall of the nozzle, and the side, away from the nozzle, of the filtering assembly is connected with a water power assembly which is located on the side, close to the nozzle, of the liquid inlet pipe. According to the anti-blocking nozzle for the fan-shaped section of the slab continuous casting machine, the scraping assembly is driven by power generated by the water power assembly to scrape impurities such as water scale attached to the inner side of the nozzle body, so that it is guaranteed that the spraying opening of the nozzle body is not blocked, the cooling water spraying amount of the nozzle body is guaranteed, and the cooling water spraying effect of the nozzle body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzles, and particularly relates to a nozzle for a segment of a slab continuous casting machine that prevents blockage. Background Art

[0002] A slab continuous casting machine is one of the very important equipment in iron and steel production, and is used to continuously cast high-temperature molten steel into slabs with a certain cross-sectional shape and size; during the continuous casting process, in order to ensure the quality of the cast slab, it is necessary to cool the surface of the cast slab, which is usually achieved by nozzles installed on the segments. These nozzles spray cooling water or aerosol onto the surface of the cast slab, and by contacting the cooling water or aerosol with the surface of the cast embryo, the cooling and temperature reduction of the cast embryo are realized.

[0003] However, in actual use, the nozzles may become blocked due to poor water quality, foreign objects entering, etc., resulting in the cooling water or aerosol being unable to pass through the nozzles smoothly and spray onto the surface of the cast slab, affecting the cooling effect and further affecting the quality of the cast slab; in order to reduce the possibility of the nozzles being blocked during use, a filter screen is usually provided at the water inlet end of the nozzles to filter the water quality, thereby reducing the possibility of the nozzles being blocked.

[0004] For example, a nozzle with anti-blocking function disclosed in the patent with publication number CN218394176U includes a liquid guide cylinder. The right end of the front surface of the liquid guide cylinder is fixedly connected with a liquid inlet pipe. A maintenance opening is opened at the left end of the top of the liquid guide cylinder. The middle end of the inner cavity of the liquid guide cylinder is fixedly connected with an annular baffle. The middle end on the left side of the liquid guide cylinder is threadedly connected with a screw rod. The right side of the screw rod is movably connected with a sealing pressing plate through a bearing, and the right side of the sealing pressing plate is movably connected to the left side of the annular baffle. Through the mutual cooperation of the filter screen, the liquid inlet pipe, the liquid guide cylinder, the nozzle body, the screw rod, the sealing pressing plate, the annular baffle, the U-shaped fixing rod, the spring, the fixing frame, the annular pressing plate and the rubber sealing seat, the nozzle body has the function of filtering during use, reducing the probability of the nozzle body being blocked, and at the same time facilitating the disassembly and cleaning of the filter screen by personnel, bringing great convenience to the use of personnel.

[0005] However, the nozzles in the above technology still have the following problems:

[0006] Although by setting a detachable filter screen, while filtering the water quality flowing to the nozzles, it is convenient to regularly disassemble the filter screen and clean the filtered impurities, the scale and the like doped in the water quality cannot be filtered by the filter screen. Even during long-term use, the scale will continuously adhere to the surface of the filter screen and the inner wall of the nozzles, resulting in a gradual decrease in the spraying water volume of the nozzles, affecting the spraying volume of the cooling water and the cooling effect. Summary of the Utility Model

[0007] In view of the deficiencies of the prior art, the present utility model provides a nozzle for a segment of a slab continuous casting machine that can prevent blockage, for example, it can slow down the blockage of the nozzle by scale, ensure the water spraying amount of the nozzle, and improve the spraying and cooling effect of the nozzle.

[0008] To achieve the above object, the present utility model provides the following technical solution: A nozzle for a segment of a slab continuous casting machine that can prevent blockage, including a nozzle head and a liquid guide cylinder. A communicating liquid inlet pipe is installed on the side of the liquid guide cylinder. The nozzle head and the liquid guide cylinder are fixedly connected and communicate with each other. One end of the liquid guide cylinder away from the nozzle head is connected with a detachable cap. A filtering component is connected to the inner wall of the liquid guide cylinder near the nozzle head. A scraping component is connected to the side of the filtering component close to the nozzle head. The scraping component is connected to the inner wall of the nozzle head. A hydrodynamic component is connected to the side of the filtering component away from the nozzle head. The hydrodynamic component is located on the side of the liquid inlet pipe close to the nozzle head.

[0009] Further, the filtering component includes a mesh frame, an inner frame, a filter screen and a number of support rods. The filter screen is located inside the mesh frame and fixedly connected to the mesh frame. The outer wall of the mesh frame is slidably connected to the inner wall of the liquid guide cylinder. The inner frame is located in the middle of the filter screen and fixedly connected to the filter screen. An annular rotating groove is opened inside the inner frame. A rotating plate is rotatably connected in the annular rotating groove. The scraping component and the hydrodynamic component are respectively connected to both sides of the rotating plate. A number of support rods are evenly distributed on the side of the filter screen close to the nozzle head, and both ends of the number of support rods are fixedly connected to the mesh frame and the inner frame respectively.

[0010] Further, the hydrodynamic component includes a first connecting block and a number of blades. The first connecting block is fixedly connected to the side of the rotating plate away from the nozzle head. A number of blades are evenly distributed on the outside of the first connecting block and fixedly connected to the first connecting block.

[0011] Further, both sides of the first connecting block near one end of the inner frame are fixedly connected with brushes. The brush handles of the two brushes are slidably connected to the inner frame, and the bristles of the two brushes extend to the position of the filter screen.

[0012] Further, the scraping component includes a second connecting block and two symmetrically arranged connecting rods. The second connecting block is fixedly connected to the side of the rotating plate close to the nozzle head. The two connecting rods are respectively fixedly connected to both sides of the second connecting block. Scraper bars are fixedly connected to one ends of the two connecting rods away from the second connecting block. Both scraper bars are slidably connected to the inner wall of the nozzle head.

[0013] Further, a limiting rod is movably connected to the side of the first connecting block close to the detachable cap. The other end of the limiting rod penetrates through the detachable cap and is threadedly connected to the detachable cap.

[0014] Further, a U-shaped removal groove is formed on one side of the first connection block close to the limit rod, and a U-shaped rotation groove is formed on the side of the U-shaped removal groove away from the limit rod. One end of the limit rod away from the detachable cap penetrates through the middle position of the U-shaped removal groove and is fixedly connected with a rotating block, and the rotating block is rotatably connected with the inner wall of the U-shaped rotation groove.

[0015] Further, a hand-tightening cap is fixedly connected to the end of the limit rod penetrating through the detachable cap.

[0016] Further, the detachable cap is threadedly connected to the end of the liquid guide cylinder away from the nozzle.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] For the nozzle used in the segment of the slab caster to prevent blockage, the cooling water introduced into the liquid guide cylinder can be filtered by the filtering component and then enter the nozzle and be sprayed outwards, so as to avoid blockage of the nozzle by large particle impurities. At the same time, the power generated by the water power component drives the scraping component to scrape off impurities such as scale attached to the inner side of the nozzle, so as to ensure that the spraying port of the nozzle will not be blocked, ensure the cooling water spraying amount of the nozzle, and improve the cooling water spraying effect of the nozzle. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall appearance connection structure of the present utility model;

[0020] Figure 2 Based on Figure 1 Explosion schematic diagram of the connection structure;

[0021] Figure 3 Based on Figure 1 Cross-sectional schematic diagram of the connection structure;

[0022] Figure 4 Based on Figure 3 Explosion schematic diagram of the internal connection structure of the liquid guide cylinder;

[0023] Figure 5 It is an explosion schematic diagram of the connection structure of the water power component, the filtering component and the scraping component of the present utility model;

[0024] Figure 6 It is a schematic diagram of the connection structure of the water power component of the present utility model from another angle;

[0025] Figure 7 It is an explosion schematic diagram of the connection structure of the filtering component from another angle.

[0026] In the figure: 1. Sprinkler head; 2. Liquid guide cylinder; 3. Liquid inlet pipe; 4. Detachable cap; 5. Mesh frame; 6. Inner frame; 7. Filter screen; 8. Support rod; 9. Rotating plate; 10. First connecting block; 11. Blade; 12. Brush; 13. Second connecting block; 14. Connecting rod; 15. Scraping strip; 16. Limit rod; 17. Rotating block; 18. Hand-tightening cap; 101. U-shaped disassembly groove; 102. U-shaped rotating groove; 601. Annular rotating groove. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] Please refer to Figure 1 - Figure 7 , a nozzle for a segment of a slab continuous casting machine that prevents blockage, including a sprinkler head 1 and a liquid guide cylinder 2. A connected liquid inlet pipe 3 is installed on the side of the liquid guide cylinder 2. The sprinkler head 1 and the liquid guide cylinder 2 are fixedly connected and communicate. One end of the liquid guide cylinder 2 away from the sprinkler head 1 is connected with a detachable cap 4. A filtering component is connected to the inner wall of the liquid guide cylinder 2 near the sprinkler head 1. A scraping component is connected to the side of the filtering component close to the sprinkler head 1. The scraping component is connected to the inner wall of the sprinkler head 1. A hydrodynamic component is connected to the side of the filtering component away from the sprinkler head 1. The hydrodynamic component is located on the side of the liquid inlet pipe 3 close to the sprinkler head 1.

[0029] As Figure 1 - Figure 7 shown, a nozzle for a segment of a slab continuous casting machine that prevents blockage in the present invention is similar in structure to the existing nozzle for a segment of a slab continuous casting machine that prevents blockage. For example, a nozzle that prevents blockage disclosed in the patent with the publication number CN218394176U. The main improvement point of the present invention is that it can scrape the scale impurities attached to the inner side of the sprinkler head 1 to ensure the cooling water spraying amount of the nozzle. As Figures 1 to 7 shown, when the nozzle for a segment of a slab continuous casting machine that prevents blockage in the present invention is in use, when the cooling water enters the liquid guide cylinder 2 through the liquid inlet pipe 3, the cooling water flows from the liquid guide cylinder 2 to the sprinkler head 1. At this time, the water flow drives the hydrodynamic component and drives the scraping component below the filtering component to scrape the inner side of the sprinkler head 1, so as to scrape and clean the scale attached to the inner side of the sprinkler head 1. At the same time, larger impurity particles in the cooling water are intercepted by the filtering component, thus preventing large particles from blocking the sprinkler head 1, maintaining the cooling water spraying amount of the sprinkler head 1, and maintaining the cooling effect of the slab. When the internal filtering component, hydrodynamic component, and scraping component are damaged, they can be taken out from the inside of the liquid guide cylinder 2 through the detachable cap 4, which is convenient for maintaining the inside of the nozzle.

[0030] As Figure 1 - Figure 7As shown in the figure, the filtering component includes a mesh frame 5, an inner frame 6, a filter screen 7, and several support rods 8. The filter screen 7 is located inside the mesh frame 5 and is fixedly connected to the mesh frame 5. The outer wall of the mesh frame 5 is slidably connected to the inner wall of the liquid guide cylinder 2. The inner frame 6 is located in the middle of the filter screen 7 and is fixedly connected to the filter screen 7. An annular rotating groove 601 is provided inside the inner frame 6. A rotating plate 9 is rotatably connected inside the annular rotating groove 601. The scraping component and the hydrodynamic component are respectively connected to both sides of the rotating plate 9. The several support rods 8 are evenly distributed on the side of the filter screen 7 close to the nozzle 1, and both ends of the several support rods 8 are fixedly connected to the mesh frame 5 and the inner frame 6 respectively. The mesh frame 5 and the inner frame 6 fix the filter screen 7 inside the liquid guide cylinder 2 for filtering operations. At the same time, multiple support rods 8 support the bottom of the filter screen 7, thereby preventing the filter screen 7 from being damaged by the impact of water flow when the water flows, improving the structural stability of the filter screen 7. At the same time, the hydrodynamic component drives the scraping component at the bottom to perform a rotating scraping operation through the rotating plate 9 in the middle of the inner frame 6.

[0031] As Figure 2 - Figure 7 shown in the figure, the hydrodynamic component includes a first connecting block 10 and several blades 11. The first connecting block 10 is fixedly connected to the side of the rotating plate 9 away from the nozzle 1. The several blades 11 are evenly distributed on the outside of the first connecting block 10 and are fixedly connected to the first connecting block 10. When the cooling water flows from the liquid guide cylinder 2 to the nozzle 1, it drives the blades 11 to rotate and synchronously drives the rotating plate 9 to rotate through the first connecting block 10, thereby generating rotational power.

[0032] As Figure 2 - Figure 6 shown in the figure, both sides of the first connecting block 10 close to one end of the inner frame 6 are fixedly connected with brushes 12. The brush handles of the two brushes 12 are slidably connected to the inner frame 6. The bristles of the two brushes 12 extend to the position of the filter screen 7. When the first connecting block 10 rotates, it drives the two brushes 12 to rotate and move above the filter screen 7, thereby using the bristles of the brushes 12 to brush the upper surface of the filter screen 7, thereby preventing scale from adhering to the surface of the filter screen 7 and improving the filtering effect of the filter screen 7.

[0033] As Figure 2 - Figure 5As shown, the scraping assembly includes a second connecting block 13 and two symmetrically arranged connecting rods 14. The second connecting block 13 is fixedly connected to the side of the rotating plate 9 close to the nozzle 1. The two connecting rods 14 are respectively fixedly connected to both sides of the second connecting block 13. One end of each of the two connecting rods 14 away from the second connecting block 13 is fixedly connected with a scraping strip 15, and both scraping strips 15 are slidably connected to the inner wall of the nozzle 1. When the hydrodynamic assembly drives the rotating plate 9 to rotate, it synchronously drives the second connecting block 13 to rotate, and then drives the two connecting rods 14 to rotate simultaneously. When the two connecting rods 14 rotate, they drive the scraping strips 15 at the ends to rotate and slide on the inner wall of the nozzle 1, so as to scrape off impurities such as scale attached to the inner wall of the nozzle 1, and the impurities are ejected from the nozzle 1 with the water flow, avoiding blockage of the nozzle 1 caused by continuous attachment of scale.

[0034] As Figure 2 - Figure 4 As shown, a limiting rod 16 is movably connected to the side of the first connecting block 10 close to the detachable cap 4. The other end of the limiting rod 16 penetrates through the detachable cap 4 and is threadedly connected to the detachable cap 4. By screwing the limiting rod 16 on the detachable cap 4, the first connecting block 10 can be pushed towards the nozzle 1, so as to prevent the filter screen 7 from shaking up and down in the liquid guide cylinder 2 when impacted by water flow. During installation, the extrusion of the limiting rod 16 on the first connecting block 10 does not need to be moderate, as long as the shaking of the mesh frame 5 up and down is avoided, and at the same time, it is ensured that the first connecting block 10 can keep rotating. A sealing ring is installed at the connection between the limiting rod 16 and the detachable cap 4 to prevent cooling water from overflowing from the liquid guide cylinder 2.

[0035] As Figure 1 - Figure 7 As shown, a U-shaped removal groove 101 is formed on the side of the first connecting block 10 close to the limiting rod 16. A U-shaped rotating groove 102 is formed on the side of the U-shaped removal groove 101 away from the limiting rod 16. One end of the limiting rod 16 away from the detachable cap 4 penetrates through the middle position of the U-shaped removal groove 101 and is fixedly connected with a rotating block 17, and the rotating block 17 is rotatably connected to the inner wall of the U-shaped rotating groove 102. Through the connection between the U-shaped removal groove 101, the U-shaped rotating groove 102, the limiting rod 16 and the rotating block 17, the first connecting block 10 and part of the filter screen 7 can be pulled out of the liquid guide cylinder 2 through the limiting rod 16 and disassembled from the limiting rod 16 and the rotating block 17, which is convenient for taking out the filter screen 7 component for replacement or cleaning of large particle impurities filtered by the filter screen 7.

[0036] As Figure 1 - Figure 4 As shown, a hand-tightening cap 18 is fixedly connected to the end of the limiting rod 16 penetrating through the detachable cap 4. Through the hand-tightening cap 18, it is more convenient to rotate the limiting rod 16, so as to adjust the position of the limiting rod 16 on the detachable cap 4.

[0037] As Figure 1 - Figure 7As shown, the detachable cap 4 is threadedly connected to one end of the liquid guide cylinder 2 away from the nozzle 1. Through the threaded connection method, it is convenient to disassemble and install between the detachable cap 4 and the liquid guide cylinder 2. A sealing ring is padded at the connection between the detachable cap 4 and the liquid guide cylinder 2, so as to ensure the sealing effect of the liquid guide cylinder 2 and prevent the cooling water from overflowing from the detachable cap 4.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A nozzle for a segment of a slab continuous casting machine that prevents blockage, comprising a nozzle head (1) and a liquid guide cylinder (2). A liquid inlet pipe (3) that is connected and communicated is installed on the side of the liquid guide cylinder (2). The nozzle head (1) and the liquid guide cylinder (2) are fixedly connected and communicated, and it is characterized in that: One end of the liquid guide cylinder (2) away from the nozzle (1) is connected with a detachable cap (4). A filtering component is connected to the inner wall of the liquid guide cylinder (2) near the nozzle (1). A scraping component is connected to the side of the filtering component near the nozzle (1). The scraping component is connected to the inner wall of the nozzle (1). A hydrodynamic component is connected to the side of the filtering component away from the nozzle (1). The hydrodynamic component is located on the side of the liquid inlet pipe (3) near the nozzle (1).

2. The nozzle for the segment of a slab continuous casting machine for preventing blockage according to claim 1, wherein: The filtering component includes a mesh frame (5), an inner frame (6), a filter screen (7) and a number of support rods (8). The filter screen (7) is located inside the mesh frame (5) and is fixedly connected to the mesh frame (5). The outer wall of the mesh frame (5) is slidably connected to the inner wall of the liquid guide cylinder (2). The inner frame (6) is located in the middle of the filter screen (7) and is fixedly connected to the filter screen (7). An annular rotating groove (601) is formed inside the inner frame (6). A rotating plate (9) is rotatably connected inside the annular rotating groove (601). The scraping component and the hydrodynamic component are respectively connected to both sides of the rotating plate (9). A number of support rods (8) are evenly distributed on the side of the filter screen (7) near the nozzle (1), and both ends of the number of support rods (8) are fixedly connected to the mesh frame (5) and the inner frame (6) respectively.

3. The nozzle for the segment of the slab continuous casting machine with anti-clogging function according to claim 2, wherein: The hydrodynamic component includes a first connecting block (10) and a number of blades (11). The first connecting block (10) is fixedly connected to the side of the rotating plate (9) away from the nozzle (1). A number of blades (11) are evenly distributed on the outside of the first connecting block (10) and are fixedly connected to the first connecting block (10).

4. The nozzle for the segment of the slab continuous casting machine for preventing blockage according to claim 3, characterized in that: Both sides of one end of the first connecting block (10) near the inner frame (6) are fixedly connected with brushes (12). The brush handles of the two brushes (12) are slidably connected to the inner frame (6). The bristles of the two brushes (12) extend to the position of the filter screen (7).

5. A nozzle for a segment of a slab continuous casting machine for preventing blockage, according to claim 2, 3 or 4, characterized in that: The scraping component includes a second connecting block (13) and two symmetrically arranged connecting rods (14). The second connecting block (13) is fixedly connected to the side of the rotating plate (9) near the nozzle (1). The two connecting rods (14) are respectively fixedly connected to both sides of the second connecting block (13). One end of the two connecting rods (14) away from the second connecting block (13) is fixedly connected with a scraping strip (15). The two scraping strips (15) are both slidably connected to the inner wall of the nozzle (1).

6. The nozzle for the segment of a slab continuous casting machine for preventing blockage according to claim 3, characterized in that: One side of the first connecting block (10) near the detachable cap (4) is movably connected with a limiting rod (16). The other end of the limiting rod (16) penetrates through the detachable cap (4) and is threadedly connected to the detachable cap (4).

7. The nozzle for the segment of a slab continuous casting machine for preventing blockage according to claim 6, characterized in that: A U-shaped removal groove (101) is formed on one side of the first connecting block (10) near the limiting rod (16). A U-shaped rotating groove (102) is formed on the side of the U-shaped removal groove (101) away from the limiting rod (16). One end of the limiting rod (16) away from the detachable cap (4) penetrates through the middle position of the U-shaped removal groove (101) and is fixedly connected with a rotating block (17). The rotating block (17) is rotatably connected to the inner wall of the U-shaped rotating groove (102).

8. The nozzle for the segment of a slab continuous casting machine for preventing blockage according to claim 6 or 7, characterized in that: One end of the limiting rod (16) penetrating through the detachable cap (4) is fixedly connected with a hand-tightening cap (18).

9. A nozzle for a segment of a slab continuous casting machine that prevents blockage, as claimed in claim 1, 2, 3, 4, 6 or 7, characterized in that: The detachable cap (4) is threadedly connected to one end of the liquid guide cylinder (2) away from the nozzle (1).

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