A continuous casting lance with a filtration system

Abstract

The application provides a continuous casting spray gun with a filtering system, which comprises a base body and a first filtering assembly; the base body is respectively provided with an air inlet and a liquid inlet; the air inlet and the liquid inlet are respectively provided with a second filtering assembly for filtering; the first filtering assembly is located in the interior of the base body and is connected with the liquid inlet; the base body is provided with a mounting groove corresponding to the first filtering assembly; the mounting groove is an open structure and is detachably connected with the first filtering assembly. According to the technical scheme provided by the embodiment of the application, the air supply and the liquid supply can be independently carried out by respectively arranging the air inlet and the liquid inlet on the base body; the second filtering assembly on the air inlet and the liquid inlet can effectively filter the air supply and the liquid supply before the air supply and the liquid supply enter the base body, so as to prevent the air supply and the liquid supply from being blocked; meanwhile, the first filtering assembly is further arranged in the base body, so that the liquid supply can be filtered for the second time by the first filtering assembly after the first filtering.

Description

Technical Field

[0001] This application relates to the field of continuous casting cooling technology, specifically to a continuous casting spray gun with a filtration system. Background Technology

[0002] In the production process of slab continuous casting machines, the atomization performance, online availability, and service life of nozzles, as key components for secondary cooling, play a crucial role in the quality of continuously cast slabs and the continuous casting operation rate, directly affecting the smooth operation of the continuous casting machine and the guarantee of quality. On the other hand, with the demands of steel plants for cost reduction, efficiency improvement, energy conservation, carbon neutrality, and carbon peaking, the consumption of secondary cooling media in continuous casting machines must be minimized while ensuring quality, output, and process requirements. This necessitates more precise and refined media consumption of nozzles, especially more economical and efficient compressed air consumption in air-water atomizing nozzles. The cooling utilization rate of atomized water in the nozzles must be optimized to reduce the generation of excessive mechanical water and runoff. At the same time, it is essential to ensure a long online service life and high availability of nozzles. Only in this way can the quality and output of continuously cast slabs and the requirements for energy conservation and consumption reduction be guaranteed.

[0003] Currently, most aerosol nozzles used domestically and internationally are simple air-water atomizing nozzles. They are simply designed with water and air inlets based on flow requirements. The water-air mixing position is at the water-air inlet or at the far end near the casting billet. The air-water atomization method is mainly vertical intersecting shear atomization. The water inlet diameter of such nozzles is often designed to be small, with the smallest being only 1.2 mm. They are very easy to get clogged during operation. Therefore, the above problems urgently need to be solved. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a continuous casting spray gun with a filtration system.

[0005] This application provides a continuous casting spray gun with a filtration system, including a substrate and a first filtration assembly;

[0006] The substrate is provided with an air inlet and a liquid inlet; the air inlet and the liquid inlet are respectively provided with a second filter assembly for filtration.

[0007] The first filter assembly is located inside the substrate and is connected to the liquid inlet; the substrate is provided with a mounting groove corresponding to the first filter assembly; the mounting groove is an open structure and is detachably connected to the first filter assembly.

[0008] Furthermore, the inlet is connected to the mounting groove via an oblique opening; the oblique opening is arranged in a circumferential direction to guide the liquid inflow along the inner wall of the mounting groove.

[0009] Furthermore, the second filtration assembly includes an air grille and a water grille;

[0010] The external air grille is plugged into and installed on the air inlet, and is sealed to the base by a first sealing ring.

[0011] The external water grid is plugged into and installed on the liquid inlet, and is sealed to the substrate by a second sealing ring.

[0012] Furthermore, the first filter assembly includes a first internal water screen; the first internal water screen is detachably installed in the mounting groove and fixed by a screw plug.

[0013] Furthermore, a nozzle is also installed on the substrate; the nozzle is connected to the substrate via a tube for mixing and atomizing the incoming liquid and air.

[0014] Furthermore, the pipe body includes an inner pipe and an outer pipe, with a sandwich layer between them; the inner pipe is connected to the mounting groove; and the sandwich layer is connected to the air inlet.

[0015] Furthermore, the base has a stepped hole corresponding to the tube body; the stepped hole has an internal thread; the inner tube is connected to the stepped hole by a thread; and the outer tube is connected to the stepped hole by a butt joint.

[0016] Furthermore, it also includes a high-temperature resistant gas filter; the high-temperature resistant gas filter is located between the connector and the inner tube; the inner side of the connector is provided with a matching groove corresponding to the high-temperature resistant gas filter, and the outer side is provided with a matching external thread corresponding to the stepped hole.

[0017] Furthermore, it also includes a second water inner screen; the second water inner screen is detachably installed at the junction of the nozzle and the inner pipe.

[0018] The advantages and positive effects of this application are:

[0019] This technical solution allows for independent air and liquid supply by setting air inlets and liquid inlets on the substrate. With the second filter components on the air and liquid inlets, effective filtration can be performed before the air and liquid enter the substrate to prevent clogging. At the same time, a first filter component is also provided in the substrate. After the liquid enters and passes through the first filter component, it will undergo a second filtration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a continuous casting spray gun with a filtration system provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the positioning assembly of a continuous casting spray gun with a filtration system provided in an embodiment of this application.

[0022] The text labels in the diagram are as follows: 100-Base; 101-Beveled opening; 110-Air external grille; 120-Water external grille; 130-First water internal grille; 140-Plug; 150-Back plate; 151-Matching groove; 160-Positioning hole; 170-Matching joint; 171-High temperature resistant gas filter; 200-Nozzle; 210-Water distribution core; 220-Nozzle; 221-Nut; 230-First airflow acceleration device; 240-Second water internal grille; 250-Second airflow acceleration device; 260-Swirl core; 310-Inner tube; 320-Outer tube. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0024] Please refer to Figure 1-2 This embodiment provides a continuous casting spray gun with a filtration system, including a base 100 and a nozzle 200; the nozzle 200 and the base 100 are connected by a pipe to form a spray gun; wherein, the base 100 is provided with an air inlet and a liquid inlet, and the nozzle 200 is provided with a nozzle 220, thereby forming a complete spraying system.

[0025] In a preferred embodiment, the tube body includes a coaxial inner tube 310 and an outer tube 320; the inner tube 310 is connected to the liquid inlet for conveying liquid; the outer tube 320 and the inner tube 310 form an interlayer, which is connected to the air inlet for conveying air.

[0026] In a preferred embodiment, the nozzle 200 is provided with a first airflow acceleration device 230 corresponding to the tube body; the first airflow acceleration device 230 is provided with a through hole corresponding to the inner tube 310, and a Laval acceleration hole is provided corresponding to the interlayer; the through hole is coaxial with the inner tube 310 and is connected; the Laval acceleration holes are evenly arranged around the through hole.

[0027] Preferably, the nozzle 200 is further provided with a swirling core 260; the swirling core 260 is installed inside the through hole and located at the end of the first airflow acceleration device 230 away from the tube body.

[0028] Preferably, a second water internal screen 240 is also installed inside the through hole; the second water internal screen 240 is detachably installed at the end of the through hole away from the vortex core 260.

[0029] Preferably, a second airflow acceleration device 250 is provided at the end of the first airflow acceleration device 230 away from the tube body; the second airflow acceleration device 250 is provided with matching docking holes corresponding to the swirl core 260 and the Laval acceleration hole, and at the end of it away from the first airflow acceleration device 230, a mixing chamber is provided that communicates with the docking hole, and the end of the mixing chamber away from the docking hole is provided with a discharge port with a relatively small aperture.

[0030] Preferably, a water separator 210 is also installed at the end of the second airflow acceleration device 250 away from the first airflow acceleration device 230; the water separator 210 has an inlet and multiple outlets, wherein the inlet is connected to the discharge port on the second airflow acceleration device 250, and the multiple outlets are respectively connected to the inlet, which is used to accelerate the mixing of bubbles and prevent secondary aggregation of air and water, thereby improving the atomization effect.

[0031] Preferably, the nozzle 200 is also provided with a nozzle 220 corresponding to the water distribution core 210; the nozzle 220 is detachably installed on the nozzle 200 and fixed to the nozzle 200 by a nut 221; the nozzle 200 is provided with a matching external thread corresponding to the nut 221; and a matching mating edge is provided between the nut 221 and the nozzle 220.

[0032] In a preferred embodiment, a filtration assembly is also included; the filtration assembly includes an external air grille 110, an external water grille 120, and a first internal water grille 130;

[0033] The water external grille 120 can be detachably installed on the liquid inlet. When the liquid inlet is connected to an external liquid supply device, the liquid will be filtered for the first time through the water external grille 120, which can effectively prevent blockage caused by impurities in the liquid.

[0034] The air grille 110 is detachably installed on the air inlet. When the air inlet is connected to the external air supply device, the air supply will be filtered through the air grille 110 before entering the base 110, thereby avoiding blockage caused by impurities in the air intake.

[0035] The first water internal grid 130 is installed inside the base 100; the base 100 is provided with a matching mounting groove corresponding to the first water internal grid 130; the mounting groove is coaxial with the inner pipe 310, one end of which is connected to the inner pipe 310, and the other end passes through the base 100.

[0036] Preferably, the first water inner bar screen 130 can be disassembled and installed from the base 100 through the end of the mounting groove away from the inner pipe 310. After installation, one end of the first water inner bar screen 130 rests against the bottom of the mounting groove, and the other end is fixed by the screw plug 140, thereby completing the installation.

[0037] In a preferred embodiment, one side of the mounting groove is connected to the liquid inlet through a bevel 101; the bevel 101 is arranged in the circumferential direction, which can guide the liquid to enter along the inner wall of the mounting groove, thereby flushing the outer wall of the first water internal grid 130 and avoiding blockage caused by too many impurities on the first water internal grid 130.

[0038] In a preferred embodiment, the base 100 is further provided with a positioning component; the positioning component includes a back plate 150 and a positioning hole 160; the positioning hole 160 is located between the air inlet and the liquid inlet, and when docking with an external supply device, the positioning hole 160 can be effectively positioned by cooperating with a matching pin.

[0039] Preferably, the back plate 150 is provided with a U-shaped grounding groove 151, which is located on both sides of the positioning hole 160. The mating groove 151 is stepped along the axial direction of the positioning hole 160, and the end away from the base 100 where the positioning hole 160 is provided is relatively wide. When docking with the supply device, the spare nut can be snapped into the mating groove 151 first, and then locked by the matching bolts, making the operation more convenient.

[0040] In a preferred embodiment, the base 100 is provided with a stepped hole corresponding to the tube body; the stepped hole is provided with an internal thread; wherein the inner tube 310 is connected to the stepped hole by a thread, and the outer tube 320 is connected to the stepped hole by a butt joint 170.

[0041] Preferably, a high-temperature resistant gas filter 171 is provided between the connector 170 and the inner tube 310; the high-temperature resistant gas filter 171 is located in the interlayer and can perform a second filtration of the incoming air; the connector 170 is provided with a matching slot corresponding to the high-temperature resistant gas filter 171, which is used to position and fix the high-temperature resistant gas filter 171.

[0042] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A continuous casting lance with a filtration system, characterized in that, Includes a substrate (100) and a first filter assembly; The substrate (100) is provided with an air inlet and a liquid inlet respectively; the air inlet and the liquid inlet are respectively provided with a second filter assembly for filtration; The first filter assembly is located inside the substrate (100) and is connected to the liquid inlet; the substrate (100) is provided with a mounting groove corresponding to the first filter assembly; the mounting groove is an open structure and is detachably connected to the first filter assembly. A nozzle (200) is also installed on the substrate (100); the nozzle (200) is connected to the substrate (100) through a pipe body for mixing and atomizing the liquid and air; the pipe body includes an inner pipe (310) and an outer pipe (320) forming a sandwich between them; the inner pipe (310) is connected to the mounting groove; the sandwich is connected to the air inlet; The nozzle (200) is provided with a first airflow acceleration device (230) corresponding to the tube body; the first airflow acceleration device (230) is provided with a through hole corresponding to the inner tube (310), and a Laval acceleration hole is provided corresponding to the interlayer; the through hole is coaxial with the inner tube (310) and is connected; the Laval acceleration holes are evenly arranged around the through hole; The nozzle (200) is also provided with a swirling core (260); the swirling core (260) is installed inside the through hole and is located at the end of the first airflow acceleration device (230) away from the tube body; The first airflow acceleration device (230) is further provided with a second airflow acceleration device (250) at the end away from the tube body; the second airflow acceleration device (250) is provided with matching docking holes corresponding to the swirl core (260) and the Laval acceleration hole respectively. At the same time, the end away from the first airflow acceleration device (230) is also provided with a mixing chamber communicating with the docking hole, and the end of the mixing chamber away from the docking hole is provided with a discharge port with a relatively small aperture. The second airflow acceleration device (250) is also equipped with a water separator (210) at the end away from the first airflow acceleration device (230). The water separator (210) has an inlet and multiple outlets, wherein the inlet is connected to the discharge port on the second airflow acceleration device (250), and the multiple outlets are connected to the inlet respectively, which is used to accelerate the mixing of bubbles and prevent secondary aggregation of air and water, thereby improving the atomization effect.

2. The continuous casting lance with a filtration system according to claim 1, characterized in that, The inlet and the mounting groove are connected by a bevel (101); the bevel (101) is arranged in a circumferential direction to guide the liquid inlet to enter along the inner wall of the mounting groove.

3. The continuous casting lance with a filtration system according to claim 1, characterized in that, The second filter assembly includes an air external grille (110) and a water external grille (120). The air grille (110) is plugged into and installed on the air inlet, and is sealed to the base (100) by a first sealing ring; The water external grid (120) is plugged into and installed on the liquid inlet, and is sealed to the substrate (100) by a second sealing ring.

4. The continuous casting lance with a filtration system according to claim 1, characterized in that, The first filter assembly includes a first water screen (130); the first water screen (130) is detachably installed in the mounting groove and fixed by a screw plug (140).

5. The continuous casting lance with a filtration system according to claim 1, characterized in that, The base (100) is provided with a stepped hole corresponding to the tube body; the stepped hole is provided with an internal thread; the inner tube (310) is connected to the stepped hole by a thread; the outer tube (320) is connected to the stepped hole by a butt joint (170).

6. The continuous casting lance with a filtration system according to claim 5, characterized in that, It also includes a high-temperature resistant gas filter (171); the high-temperature resistant gas filter (171) is located between the connector (170) and the inner tube (310); the inner side of the connector (170) is provided with a matching slot corresponding to the high-temperature resistant gas filter (171), and the outer side is provided with a matching external thread corresponding to the stepped hole.

7. The continuous casting lance with a filtration system according to claim 1, characterized in that, It also includes a second water inner screen (240); the second water inner screen (240) is detachably installed at the junction of the nozzle (200) and the inner tube (310).

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