A mould powder thickness measuring device

Abstract

The application discloses a crystallizer protecting slag thickness measuring device, which comprises a crossbeam capable of providing support, a guide sleeve fixedly installed on the crossbeam, first and second lifting columns in the shape of a long strip, the length direction of the first and second lifting columns extending along the vertical direction, the guide sleeve being provided with sliding holes matched with the shapes of the first and second lifting columns to allow the first and second lifting columns to slide and lift, the first and second lifting columns being respectively connected with lifting power assemblies capable of driving the first and second lifting columns to lift, an asbestos plate detachably connected with the bottom end of the first lifting column, and a metal wire. The application can measure with high precision and improve the measurement stability; has the functions of automation and remote operation, and an operator can remotely operate through a controller, so that direct contact in a high-temperature environment is avoided and the safety risk is significantly reduced; and the metal wire can be quickly replaced through fastening members to adapt to different melting point requirements.

Description

Technical Field

[0001] This application relates to the technical field of protective slag thickness measuring devices, and in particular to a crystallizer protective slag thickness measuring device. Background Technology

[0002] In continuous casting, controlling the thickness of the mold flux is crucial for billet quality and production safety. The mold flux needs to form a stable three-layer structure (liquid slag layer, sintered layer, and powdered slag layer) on the surface of the molten steel, and its thickness directly affects lubrication, heat preservation, inclusion adsorption, and heat transfer performance. However, current techniques for measuring mold flux thickness still face the following challenges:

[0003] Traditional manual measurement methods rely on inserting a metal wire into the crystallizer and observing the melting length. However, these methods are susceptible to large measurement errors due to operator shaking, crystallizer vibration, and fluctuations in the molten steel surface.

[0004] Although laser ranging technology can achieve non-contact measurement, it can only obtain the total thickness of the molten slag layer and the solid slag layer, and cannot separate the thickness of the liquid slag layer (CN101097133A).

[0005] The existing equipment lacks automation, and operators need to be in close contact with the high-temperature crystallizer, which poses a safety hazard.

[0006] Therefore, there is an urgent need for a protective slag thickness measuring device with stable structure, high measurement accuracy and remote operation to solve the above-mentioned technical defects. Summary of the Invention

[0007] The purpose of this application is to provide a crystallizer protective slag thickness measuring device to solve the above problems. It can measure with high precision and improve measurement stability; it has automation and remote operation functions, and the operator can operate it remotely through the controller to avoid direct contact in high temperature environment and significantly reduce safety risks; the metal wire can be quickly replaced by fasteners to adapt to different melting point requirements.

[0008] This application achieves the above objectives through the following technical solutions:

[0009] A crystallizer protective slag thickness measuring device includes: a crossbeam providing support; a guide sleeve fixedly mounted on the crossbeam; a first lifting column and a second lifting column, both elongated and extending vertically along their lengths; the guide sleeve having sliding holes adapted to the shapes of the first and second lifting columns for sliding and lifting; the first and second lifting columns being respectively connected to lifting power components capable of driving their lifting and lowering; an asbestos board detachably connected to the bottom end of the first lifting column; and a metal wire detachably connected at one end to the bottom end of the second lifting column; the asbestos board having through holes for the metal wire to pass through vertically.

[0010] In some embodiments, the system further includes: a bracket fixedly connected to the crossbeam to provide support; the lifting power assembly includes: a rotating shaft, a gear, a rack, a servo geared motor, a worm gear, and a worm wheel, the rotating shaft body being rotatably connected to the bracket, the gear being solidly sleeved on the rotating shaft, the first lifting column and the second lifting column having racks adapted to the gear along their length direction, the worm wheel being fixedly connected to the end of the rotating shaft, the servo geared motor being fixedly mounted on the bracket, the worm gear being fixedly connected to the output shaft of the servo geared motor, and the worm gear meshing with the worm wheel.

[0011] In some embodiments, a guide bar is further included. The guide bar is fixedly disposed on the guide sleeve and is located between the first lifting column and the second lifting column. The first lifting column and the second lifting column are provided with guide grooves that slide with the guide bar.

[0012] In some embodiments, a fastener is also included, wherein the second lifting column is provided with a socket for inserting a wire, and the fastener is screwed to the second lifting column to secure the end of the wire inserted into the socket.

[0013] In some embodiments, lifting rings are fixedly installed near both ends of the crossbeam.

[0014] In some embodiments, the first lifting column and the second lifting column are rectangular columns.

[0015] Compared to existing technologies, this application offers high-precision measurement: by using the step-by-step descent of the asbestos board and metal wire, combined with differences in melting points, the thickness of the liquid slag layer, sintered layer, and powdered slag layer can be accurately distinguished. The coordinated design of the guide bar and sliding hole ensures no shaking during the lifting of the column, improving measurement stability; it also enables automated and remote operation: the lifting power component enables independent lifting control of the first and second lifting columns, and operators can remotely operate the system via a controller, avoiding direct contact in high-temperature environments and significantly reducing safety risks; simultaneously, the fasteners allow for quick replacement of the metal wire to adapt to different melting point requirements. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a schematic diagram of the guide bar structure of this application.

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Crossbeam; 2. Guide sleeve; 3. Sliding hole; 4. First lifting column; 5. Second lifting column; 6. Asbestos board; 7. Metal wire; 8. Bracket; 9. Rotating shaft; 10. Gear; 11. Rack; 12. Servo geared motor; 13. Worm; 14. Worm wheel; 15. Guide bar; 16. Guide groove; 17. Fastener; 18. Through hole; 19. Lifting ring. Detailed Implementation

[0021] 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.

[0022] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 This description is provided for the convenience of describing this application and for the purpose of simplifying the description, and is not intended to 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.

[0023] like Figure 1-2 As shown, a crystallizer protective slag thickness measuring device includes: a crossbeam 1 providing support; a guide sleeve 2 fixedly mounted on the crossbeam 1; a first lifting column 4 and a second lifting column 5, both elongated and extending vertically along their lengths; the guide sleeve 2 having sliding holes 3 adapted to the shapes of the first and second lifting columns 4 and 5 for sliding and lifting; the first and second lifting columns 4 and 5 being connected to lifting power components capable of driving their lifting and lowering; an asbestos board 6 detachably connected to the bottom end of the first lifting column 4; and a metal wire 7 detachably connected at one end to the bottom end of the second lifting column 5; the asbestos board 6 having through holes 18 for the metal wire 7 to pass through vertically.

[0024] In this embodiment, the crossbeam 1 is plate-shaped, allowing it to be placed horizontally above the crystallizer's nozzle. The first lifting column 4 and the second lifting column 5 are elongated and have a lifting stroke. The first lifting column 4 and the second lifting column 5 slide and rise within the sliding hole 3, which guides them. The lifting power assembly drives the first lifting column 4 and the second lifting column 5 to rise and fall. After the asbestos board 6 contacts the surface of the protective slag, it stops descending, causing the second lifting column 5 to rise and fall, which in turn causes the metal wire 7 to descend. The metal wire 7 moves downward to contact the molten steel. The metal wire 7 remains intact in the protective slag position because its melting point temperature is insufficient, while the metal wire 7 in contact with the molten steel will... Once the metal wire 7 is melted, the bottom position of the protective slag can be obtained from the metal wire 7. The total thickness of the protective slag can then be obtained by measuring the distance between the bottom end of the metal wire 7 and the bottom surface of the asbestos board 6. The asbestos board 6 can withstand the temperature of the protective slag, and its plate-like shape can generate resistance, so that the asbestos board 6 is on the surface of the protective slag. In some embodiments, the metal wire 7 can be made of copper (melting point 1083℃), aluminum (660℃), or iron (1521℃), etc. In some embodiments, the first lifting column 4 and the second lifting column 5 can be driven to rise synchronously by the lifting power assembly, so that the distance between the metal wire 7 and the asbestos board 6 remains consistent during the rising process. The distance is measured after the lifting to determine the thickness of the protective slag.

[0025] In some embodiments, the system further includes: a bracket 8, which is fixedly connected to the crossbeam 1 to provide support; the lifting power assembly includes: a rotating shaft 9, a gear 10, a rack 11, a servo geared motor 12, a worm 13, and a worm wheel 14. The shaft of the rotating shaft 9 is rotatably connected to the bracket 8. The gear 10 is solidly sleeved on the rotating shaft 9. The first lifting column 4 and the second lifting column 5 are provided with racks 11 adapted to the gear 10 along the length direction. The worm wheel 14 is fixedly connected to the end of the rotating shaft 9. The servo geared motor 12 is fixedly mounted on the bracket 8. The worm 13 is fixedly connected to the output shaft of the servo geared motor 12, and the worm 13 meshes with the worm wheel 14.

[0026] In this embodiment, the bracket 8 and the crossbeam 1 are connected by fasteners. The bracket 8 provides support for the lifting power assembly. The rotating shaft 9 is connected to the bracket 8 through a bearing so that the bracket 8 supports the rotating shaft 9 to rotate. The two sets of lifting power assemblies can drive the first lifting column 4 and the second lifting column 5 to lift and lower respectively, so that the first lifting column 4 and the second lifting column 5 can operate. The controller can be used for remote operation, avoiding contact between the operator and the crystallizer, and avoiding burns to the operator by the high temperature molten steel.

[0027] In some embodiments, a guide bar 15 is also included. The guide bar 15 is fixedly disposed on the guide sleeve 2 and is located between the first lifting column 4 and the second lifting column 5. The first lifting column 4 and the second lifting column 5 are provided with guide grooves 16 that slide with the guide bar 15.

[0028] In this embodiment, the guide strip 15 is long and flat at both ends with the guide sleeve 2, so as to further limit the first lifting column 4 and the second lifting column 5, so as to prevent the first lifting column 4 and the second lifting column 5 from shaking when they are raised and lowered, and to maintain stability.

[0029] In some embodiments, a fastener 17 is also included, wherein the second lifting column 5 is provided with a socket for inserting the wire 7, and the fastener 17 is screwed to the second lifting column 5 to secure the end of the wire 7 inserted into the socket.

[0030] In this embodiment, the fastener 17 has its end in contact with the metal wire 7, thereby fastening the metal wire 7. The metal wire 7 can be loosened or loosened by turning the fastener 17.

[0031] In some embodiments, lifting rings 19 are fixedly provided near both ends of the crossbeam 1. The lifting rings 19 facilitate the lifting of the device so that it can be removed from the crystallizer to measure the distance between the asbestos board 6 and the metal wire 7 and thus determine the thickness of the protective slag.

[0032] In some embodiments, the first lifting column 4 and the second lifting column 5 are rectangular columns, which can maintain the stability of lifting.

[0033] In the above structure, the crossbeam 1 is placed horizontally on the crystallizer. The servo reduction motor 12 is started, driving the worm gear 13 to rotate. The worm gear 13 meshes with and drives the worm wheel 14 to rotate. The worm wheel 14 synchronously drives the rotating shaft 9 and the gear 10 to rotate. The gear 10 meshes with the rack 11, enabling the first lifting column 4 and the second lifting column 5 to rise and fall respectively. The first lifting column 4 descends, driving the asbestos board 6 to contact the surface of the protective slag and then stops descending. Then, another servo reduction motor 12 is started, driving the second lifting column 5 to rise and fall, thereby driving the metal wire 7 to descend. The metal wire 7 moves downward to contact the molten steel. The metal wire 7 remains intact in the protective slag position because the melting point temperature is insufficient, while the metal wire 7 in contact with the molten steel will be melted. The bottom position of the protective slag can be obtained based on the metal wire 7. The total thickness of the protective slag can be obtained by measuring the distance between the bottom end of the metal wire 7 and the bottom surface of the asbestos board 6.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the thickness of mold flux, characterized in that, include: A crossbeam (1) provides support; a guide sleeve (2) is fixedly installed on the crossbeam (1); a first lifting column (4) and a second lifting column (5) are long strips, with their lengths extending vertically. The guide sleeve (2) has sliding holes (3) adapted to the shape of the first lifting column (4) and the second lifting column (5) for sliding and lifting. The first lifting column (4) and the second lifting column (5) are respectively connected to lifting power components that can drive them to rise and fall; an asbestos board (6) is detachably connected to the bottom end of the first lifting column (4); a metal wire (7) is detachably connected to the bottom end of the second lifting column (5). The asbestos board (6) has through holes (18) for the metal wire (7) to pass through vertically.

2. The crystallizer protective slag thickness measuring device according to claim 1, characterized in that: Also includes: The bracket (8) is fixedly connected to the crossbeam (1) to provide support; the lifting power assembly includes: a rotating shaft (9), a gear (10), a rack (11), a servo geared motor (12), a worm (13) and a worm wheel (14). The shaft of the rotating shaft (9) is rotatably connected to the bracket (8). The gear (10) is solidly sleeved on the rotating shaft (9). The first lifting column (4) and the second lifting column (5) are provided with racks (11) that are adapted to the gear (10) along the length direction. The worm wheel (14) is fixedly connected to the end of the rotating shaft (9). The servo geared motor (12) is fixedly installed on the bracket (8). The worm (13) is fixedly connected to the output shaft of the servo geared motor (12), and the worm (13) meshes with the worm wheel (14).

3. The crystallizer protective slag thickness measuring device according to claim 1, characterized in that: It also includes a guide bar (15), which is fixedly mounted on the guide sleeve (2) and located between the first lifting column (4) and the second lifting column (5). The first lifting column (4) and the second lifting column (5) are provided with guide grooves (16) that slide with the guide bar (15).

4. The crystallizer protective slag thickness measuring device according to claim 1, characterized in that: It also includes a fastener (17), on which the second lifting column (5) is constructed a socket for inserting a metal wire (7), and the fastener (17) is screwed to the second lifting column (5) to secure the end of the metal wire (7) inserted into the socket.

5. A crystallizer protective slag thickness measuring device according to any one of claims 1-4, characterized in that: Lifting rings (19) are fixed near both ends of the crossbeam (1).

6. The crystallizer protective slag thickness measuring device according to claim 1, characterized in that: The first lifting column (4) and the second lifting column (5) are rectangular columns.

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