A crystallizer with a spraying device

Abstract

The present application relates to a kind of crystallizer with spraying device, including crystallizer body, the bottom of the crystallizer body is equipped with assembly foot roll, a plurality of installation holes for installing foot roll spray assembly are opened in the assembly foot roll, the spray assembly is installed below the assembly foot roll, metal hose is connected on the spray assembly, the end of the metal hose away from the spray assembly is connected on the mounting surface of the crystallizer body.It cancels a section of spray header installation support, saves certain space in two cooling chamber area, brings convenience for staff to overhaul other equipment in two cooling chamber;Staff can be offline to a section of spray header in advance to arc, after replacing crystallizer, it is not necessary to be online again to a section of spray header calibration arc, it wins time for the production of casting machine, also directly reduces security risk;The centralized arrangement of all pipelines is more convenient for the maintenance and management of staff, and the trend of pipeline also appears more orderly.

Description

Technical Field

[0001] This invention relates to the field of continuous casting equipment technology in the metallurgical industry, and in particular to a crystallizer with a built-in spray device. Background Technology

[0002] As one of the core pieces of equipment in a continuous casting machine, the crystallizer's primary function is to complete the initial solidification of molten steel and the formation of a solidification mold; this process is commonly referred to as primary cooling. The crystallizer is precisely mounted on a vibrating device using locating pins and other means, and vibrates along with the device during production, thereby separating the initially solidified billet (which still contains molten steel at this stage) from the copper tubes of the crystallizer.

[0003] The end of the crystallizer is usually equipped with foot roller assembly and foot roller spray. Below the crystallizer, according to the process requirements and running trajectory of the billet solidification, two to four spray manifolds are arranged in sequence. This process is called secondary cooling. Each spray manifold has two independent mounting brackets, which are attached to other equipment nearby.

[0004] The existing technical solutions mentioned above have the following drawbacks: This installation method occupies a large amount of space in the secondary cooling chamber area, especially in the spray manifold area. Due to the unique conditions, the already small space becomes even more crowded, causing great trouble for equipment maintenance and posing significant safety hazards. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a crystallizer with a built-in spray device, which eliminates a section of the spray manifold mounting bracket, saves a certain amount of space in the secondary cooling chamber area, and brings convenience to employees in inspecting and maintaining other equipment in the secondary cooling chamber.

[0006] The above-mentioned objective of this invention is achieved through the following technical solutions:

[0007] A crystallizer with a built-in spray device includes a crystallizer body, an assembly foot roller is installed at the bottom of the crystallizer body, the assembly foot roller has a plurality of mounting holes for mounting a foot roller spray assembly, the spray assembly is installed below the assembly foot roller, and a metal hose is connected to the spray assembly, the end of the metal hose away from the spray assembly is connected to the mounting surface of the crystallizer body.

[0008] In a preferred embodiment, the present invention may be further configured such that a vibration device is detachably and fixedly connected to the crystallizer body, and the vibration of the vibration device causes the initially solidified billet to separate from the crystallizer copper tube inside the crystallizer body.

[0009] In a preferred embodiment, the present invention can be further configured such that: the mounting surface of the crystallizer body is provided with a crystallizer water inlet hole, a crystallizer water return hole, an electromagnetic stirring water inlet and return hole, a foot roller spray water inlet hole, a first-stage spray water inlet hole, and a first-stage spray air inlet hole; the mounting surface of the vibration device is also provided with corresponding holes, which are sealed with O-rings; and finally, the external pipeline is directly connected to the mounting plate of the vibration device.

[0010] In a preferred embodiment, the present invention may be further configured such that: the top of the assembly foot roller is mounted on the end flange of the crystallizer body, and the assembly foot roller extends downward with a plurality of legs for mounting the foot roller spray assembly.

[0011] In a preferred embodiment, the present invention may be further configured such that: the foot roller spraying assembly includes a foot roller water collecting pipe, a foot roller water collecting ring, a spray manifold, a spray water collecting ring, and a spray air collecting ring; the inner side of the top surface of the foot roller water collecting ring is provided with a first mounting surface that connects to the assembled foot roller; and the outer side of the bottom surface of the foot roller water collecting ring is provided with a second mounting surface that connects to the spray water collecting ring.

[0012] In a preferred embodiment, the present invention can be further configured such that: one end of the water pipe of the four spray pipes of the spray manifold is fixed on the spray water collection ring, one end of the air pipe of the four spray pipes of the spray manifold is fixed on the spray air collection ring, and the water pipe and air pipe of the four spray pipes of the spray manifold are respectively connected to the spray water collection ring and the spray air collection ring to form a whole.

[0013] In a preferred embodiment, the present invention may be further configured such that: a plurality of cooling nozzles are installed on the spray manifold, the cooling nozzles being used to spray water to cool the casting billet.

[0014] In a preferred embodiment, the present invention may be further configured such that: a plurality of annular frames are installed on the spray pipes, four of the spray pipes are tightly clamped on the annular frames, and four clamping devices for clamping the spray pipes are provided on the annular frames.

[0015] In a preferred embodiment, the present invention can be further configured such that: the clamping device includes an installation tube and a permanent magnet, a spring, and an electromagnet disposed inside the installation tube; one end of the spray pipe is disposed inside the installation tube; the permanent magnet is slidably disposed on one side of the spray pipe; one end of the spring is fixedly connected to the permanent magnet, and the other end is fixedly connected to the electromagnet; the electromagnet is fixed inside the installation tube.

[0016] In a preferred embodiment, the present invention may be further configured such that the spray pipe is a soft water pipe.

[0017] In summary, the present invention has at least one of the following beneficial technical effects:

[0018] 1. This invention discloses a crystallizer with a built-in spray device, which eliminates the need for a section of the spray manifold mounting bracket, saving space in the secondary cooling chamber area and facilitating employee maintenance of other equipment in the secondary cooling chamber. Employees can perform offline pre-alignment of a section of the spray manifold, eliminating the need for online alignment after crystallizer replacement, thus saving time for casting machine production and directly reducing safety hazards. The centralized arrangement of all pipelines makes maintenance and management easier for employees and also makes the pipeline routing more organized.

[0019] 2. This invention installs annular frames on the four spray pipes below the crystallizer, and fastening devices are installed on the outer wall of the spray pipes on each annular frame to prevent the spray pipes from deforming outwards due to heat, thereby greatly improving the stability and service life of the spray pipes. Furthermore, utilizing the principle of attraction between like poles and repulsion between unlike poles of an electromagnet and a permanent magnet, a spring is added between the electromagnet and the permanent magnet. The spray pipe is placed at the end of the permanent magnet furthest from the spring. The elasticity of the spring and the generated magnetic force can adjust the pressure applied to the spray pipe, thereby ensuring the flow of liquid within the spray pipe and improving the stability of the spray pipe operation. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention.

[0021] Figure 2 This is a plan view of the arrangement of the water vapor pores in this invention.

[0022] Figure 3 This is a partial enlarged view of each water pore in the present invention.

[0023] Figure 4 This is a schematic diagram illustrating the structure of the clamping device of the present invention.

[0024] Reference numerals in the attached drawings: 1. Crystallizer body; 10. Crystallizer water inlet; 11. Crystallizer water return outlet; 12. Electromagnetic stirrer water inlet / return outlet; 13. Foot roller spray water inlet; 14. Spray water inlet; 15. Spray air inlet; 2. Assembled foot roller; 3. Spray assembly; 31. Foot roller water collection pipe; 32. Foot roller water collection ring; 33. Spray manifold; 34. Spray water collection ring; 35. Spray air collection ring; 4. Metal hose; 5. Spray pipe; 51. Annular frame; 6. Cooling nozzle; 7. Fastening device; 71. Mounting pipe; 72. Permanent magnet; 73. Spring; 74. Electromagnet. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Example 1:

[0029] Reference Figure 1 This invention discloses a crystallizer with a built-in spray device, comprising a crystallizer body 1, an assembly foot roller 2 mounted on the bottom of the crystallizer body 1, and multiple mounting holes on the assembly foot roller 2 for mounting a foot roller spray assembly 3. The spray assembly 3 is mounted below the assembly foot roller 2, and a metal hose 4 is connected to the spray assembly 3. The end of the metal hose 4 away from the spray assembly 3 is connected to the mounting surface of the crystallizer body 1 (see...). Figure 3 ).

[0030] A vibration device is detachably and fixedly connected to the crystallizer body 1. The vibration of the vibration device causes the initially solidified billet to separate from the crystallizer copper tube inside the crystallizer body 1.

[0031] Reference Figure 2The crystallizer body 1 has a crystallizer water inlet 10, a crystallizer water return 11, an electromagnetic stirring water inlet and return 12 (if there is an electromagnetic stirring device), a foot roller spray water inlet 1413, a first-stage spray water inlet 14, and a first-stage spray air inlet 15. The vibration device also has corresponding holes on its mounting surface, which are sealed with O-rings. Finally, the external pipeline is directly connected to the mounting plate of the vibration device.

[0032] This invention eliminates the need for a mounting bracket for the spray manifold 33. Mounting holes for the foot roller spray assembly 3 are provided on the mounting foot roller 2 below the crystallizer, and mounting holes for the foot roller spray water collection ring 34 are provided for mounting the foot roller and the spray manifold 33. The foot roller spray and the spray manifold 33 can be sequentially suspended from the lower end of the foot roller, and the cooling water and air pipes of the foot roller spray and the spray manifold 33 are connected to the crystallizer mounting surface using flexible metal hoses 4. When replacing the crystallizer, only the mounting bolts between the crystallizer and the vibration device need to be removed to replace the crystallizer and the spray manifold 33 as a whole, making the process convenient and quick.

[0033] The top of the assembly foot roller 2 is mounted on the end flange of the crystallizer body 1, and the assembly foot roller 2 extends downward to provide multiple support legs for the installation of the foot roller spray assembly 3.

[0034] Reference Figure 1 The foot roller spray assembly 3 includes a foot roller water collection pipe 31, a foot roller water collection ring 32, a spray manifold 33, a spray water collection ring 34, and a spray air collection ring 35. The inner side of the top surface of the foot roller water collection ring 32 is provided with a first mounting surface that connects to the assembled foot roller 2, and the outer side of the bottom surface of the foot roller water collection ring 32 is provided with a second mounting surface that connects to the spray water collection ring 34.

[0035] One end of the water pipe of the four spray pipes 5 of the spray manifold 33 is fixed to the spray water collection ring 34, and one end of the air pipe of the four spray pipes 5 of the spray manifold 33 is fixed to the spray air collection ring 35. The water pipe and air pipe of the four spray pipes 5 of the spray manifold 33 are respectively connected to the spray water collection ring 34 and the spray air collection ring 35 to form a whole. All spray water collection rings 34 and spray air collection rings 35 are provided with water / air inlet mounting holes on their inner arc side, and finally connected to the crystallizer mounting surface with a metal flexible hose 4.

[0036] Reference Figure 1Multiple cooling nozzles 6 are installed on the spray manifold 33, which spray water to cool the billet. Theoretically, the cooling nozzles 6 in the spray manifold 33 are fixed. The installation method of directly suspending a section of the spray manifold 33 at the end of the crystallizer will cause it to vibrate along with the crystallizer during production. However, the amplitude of the vibration device (e.g., 5mm) is far less than the casting radius of the continuous casting machine (e.g., 9000mm), and its impact on the cooling of the billet is negligible. Furthermore, the working environment for employees offline is far superior to that online, further improving the accuracy of the spray manifold 33 in aligning with the arc. Therefore, compared to other methods, suspending a section of the spray manifold 33 at the end of the crystallizer is a highly reliable and practical installation method.

[0037] It should be noted that the crystallizer body, foot roller assembly, foot roller spraying assembly, and spraying manifold in this application are applications of existing technology and are not described in detail. This invention mainly addresses existing problems by rationally integrating the above equipment without changing the continuous casting process, and optimizing the structural details of related components. In comparison, the integrated and optimized equipment is easier to maintain, quicker to replace, and safer and more practical – these are the innovative points of this application.

[0038] Reference Figure 4 Multiple annular frames 51 are installed on the spray pipes 5. Four spray pipes 5 are tightly clamped to the annular frames 51. Four clamping devices 7 are provided on the annular frames 51 for clamping the spray pipes 5. The clamping device 7 includes an installation pipe 71 and a permanent magnet 72, a spring 73, and an electromagnet 74 disposed inside the installation pipe 71. One end of the spray pipe 5 is disposed inside the installation pipe 71. The permanent magnet 72 is slidably disposed on one side of the spray pipe 5. One end of the spring 73 is fixedly connected to the permanent magnet 72, and the other end is fixedly connected to the electromagnet 74. The electromagnet 74 is fixed inside the installation pipe 71.

[0039] When the foot roller spray assembly 3 of the crystallizer is working, the electromagnet 74 is electrically connected to the external electromagnet 74 control circuit that can change the direction of current flow. By changing the direction of current flow through the electromagnet 74 control circuit, the magnetic pole direction of the electromagnet 74 is changed. Under normal circumstances, the side of the permanent magnet 72 closer to the spray pipe 5 is the S pole, and the side closer to the spring 73 is the N pole. When the current direction of the electromagnet 74 control circuit is positive, the side of the electromagnet 74 closer to the spring 73 is the N pole. According to the principle that opposite poles attract and like poles repel, the elastic force of the spring 73 and the magnetic force of the electromagnet are applied to the spray pipe 5, which can stably press the spray pipe 5 against the inner wall of the mounting pipe 71, preventing the spray pipe 5 from deforming outward due to heat.

[0040] The magnitude of the current in the control circuit of electromagnet 74 can be changed to alter the magnetic force of electromagnet 74, thereby automatically adjusting the deformation length of spring 73. This facilitates the adjustment of the pressure of permanent magnet 72 on spray pipe 5, thus regulating the liquid flow rate within spray pipe 5. Furthermore, after prolonged use, the metal spring 73 located between electromagnet 74 and permanent magnet 72 becomes magnetized, effectively preventing the spring 73 from rusting and thus avoiding limitations in its elasticity.

[0041] In actual operation, the water used to cool the billet through the spray pipe 5 is generally industrial wastewater, which contains a large amount of metal impurities. Although it is filtered before entering the foot roller spray assembly 3, the cooling water still contains a significant amount of metal impurities. After prolonged use, these metal impurities accumulate in the cooling nozzles 6 through the spray pipe 5, causing blockage and preventing the spraying device from functioning properly. By installing a permanent magnet 72 on one side of the spray pipe 5, the permanent magnet 72 can tightly attract metal impurities to the area near the permanent magnet 72 during the spray cooling of the billet, thus preventing metal impurities from entering the cooling nozzles 6 and improving the stability and service life of the cooling nozzles 6. After prolonged use, metallic impurities will accumulate on the inner wall of the spray pipe 5 near the permanent magnet 72. When cleaning the inner wall of the spray pipe 5 is required, the cooling nozzle 6 on the spray pipe 5 is removed, cooling water is normally introduced, and the current direction of the control circuit of the electromagnet 74 is adjusted so that the electromagnet 74 near the spring 73 is at the S pole. The electromagnet 74 will attract the permanent magnet 72 to move away from the end of the spray pipe 5, and the spring 73 will be compressed to accumulate elastic force. When the permanent magnet 72 is detached from the spray pipe 5, the metallic impurities accumulated on the inner wall of the spray pipe 5 are flushed out by the cooling water, thereby improving the cleaning effect of the inner wall of the spray pipe 5. In this embodiment, the spray pipe 5 is a soft water pipe made of high-temperature resistant PVC material.

[0042] Furthermore, the permanent magnet 72 is preferably made of iron-chromium-cobalt (FeCrCo) magnets. FeCrCo is the "Transformer" of permanent magnets, possessing the greatest deformability among alloy permanent magnets. It can be drawn into wires (0.2-0.3mm), tubes, rolled into strips, and subjected to various machining processes. A. FeCrCo deformable permanent magnet alloys have high magnetic properties, comparable to AlNiCo permanent magnet alloys, but their Co content is about 50% lower than AlNiCo. B. FeCrCo alloys have excellent plasticity and ductility, making them easy to process—characteristics unmatched by cast permanent magnet alloys. Furthermore, their high operating temperature of around 400°C is unattainable for NdFeB rare-earth permanent magnets. C. FeCrCo alloys can be processed into wires, rods, tubes, strips, and forgings. Through machining such as turning, milling, planing, drilling, and stamping, they can be manufactured into permanent magnet components of various complex shapes, exhibiting unique characteristics, especially for small, thin components. The thinnest strip can be as thin as 0.05mm, and the finest wire can be processed to 0.1mm.

[0043] This invention installs annular frames 51 on the four spray pipes 5 below the crystallizer, and a clamping device 7 is installed on the outer wall of the spray pipe 5 on each annular frame 51 to prevent the spray pipe 5 from deforming outward due to heat, thereby greatly improving the stability and service life of the spray pipe 5. Furthermore, utilizing the principle of attraction between like poles and repulsion between like poles of electromagnet 74 and permanent magnet 72, a spring 73 is added between the electromagnet 74 and the permanent magnet 72. The spray pipe 5 is placed at the end of the permanent magnet 72 away from the spring 73. The elasticity of the spring 73 and the magnetic force it generates can adjust the pressure applied to the spray pipe 5, thereby ensuring the flow of liquid within the spray pipe 5 and improving the stability of the spray pipe 5's operation.

[0044] The implementation principle of this invention is as follows: This invention discloses a crystallizer with a built-in spray device, which eliminates the need for a spray manifold 33 mounting bracket, saving space in the secondary cooling chamber area and facilitating the maintenance of other equipment in the secondary cooling chamber by employees; employees can perform offline pre-alignment of a section of the spray manifold 33, and after replacing the crystallizer, there is no need to perform online alignment of the spray manifold 33, saving time for the casting machine's production and directly reducing safety hazards; the centralized arrangement of all pipelines makes maintenance and management by employees more convenient and makes the pipeline routing more organized.

[0045] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A crystallizer with a built-in spray device, comprising a crystallizer body (1), characterized in that, The bottom of the crystallizer body (1) is equipped with an assembly foot roller (2). The assembly foot roller (2) has multiple mounting holes for mounting the foot roller spray assembly (3). The spray assembly (3) is installed below the assembly foot roller (2). A metal hose (4) is connected to the spray assembly (3). One end of the metal hose (4) away from the spray assembly (3) is connected to the mounting surface of the crystallizer body (1). The top of the assembly foot roller (2) is mounted on the end flange of the crystallizer body (1), and the assembly foot roller (2) extends downward with multiple support legs for mounting the foot roller spray assembly (3). The foot roller spray assembly (3) includes a foot roller water collection pipe (31), a foot roller water collection ring (32), a spray collection pipe (33), a spray water collection ring (34), and a spray air collection ring (35). The foot roller water collection ring (32) has a first mounting surface on its inner top surface that is connected to the assembled foot roller (2), and the foot roller water collection ring (32) has a second mounting surface on its outer bottom surface that is connected to the spray water collection ring (34). One end of the water pipe of the four spray pipes (5) of the spray manifold (33) is fixed on the spray water collection ring (34), and one end of the air pipe of the four spray pipes (5) of the spray manifold (33) is fixed on the spray air collection ring (35). The water pipe and air pipe of the four spray pipes (5) of the spray manifold (33) are respectively connected to the spray water collection ring (34) and the spray air collection ring (35) to form a whole. Multiple annular frames (51) are installed on the spray pipe (5), and four spray pipes (5) are tightly clamped on the annular frames (51). Four clamping devices (7) are provided on the annular frames (51) for clamping the spray pipes (5). The clamping device (7) includes an installation tube (71) and a permanent magnet (72), a spring (73) and an electromagnet (74) disposed inside the installation tube (71). The spray pipe (5) is disposed at one end inside the installation tube (71). The permanent magnet (72) is slidably disposed on one side of the spray pipe (5). One end of the spring (73) is fixedly connected to the permanent magnet (72), and the other end is fixedly connected to the electromagnet (74). The electromagnet (74) is fixed inside the installation tube (71).

2. A crystallizer with a built-in spray device according to claim 1, characterized in that, A vibration device is detachably and fixedly connected to the crystallizer body (1). The vibration of the vibration device causes the initially solidified billet to separate from the crystallizer copper tube inside the crystallizer body (1).

3. A crystallizer with a built-in spray device according to claim 2, characterized in that, The crystallizer body (1) has a crystallizer water inlet (10), a crystallizer water return (11), an electromagnetic stirring water inlet and return (12), a foot roller spray water inlet (13), a section of spray water inlet (14), and a section of spray air inlet (15) on its mounting surface. The vibration device also has corresponding holes on its mounting surface, which are sealed with O-rings. Finally, the external pipeline is directly connected to the mounting plate of the vibration device.

4. A crystallizer with a built-in spray device according to claim 1, characterized in that, The spray manifold (33) is equipped with a plurality of cooling nozzles (6), which are used to spray water to cool the billet.

5. A crystallizer with a built-in spray device according to claim 1, characterized in that, The spray pipe (5) is a soft water pipe.

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