Molten steel sampling device

Abstract

The utility model discloses a molten steel sampling device which comprises a sampling rod, a heat insulation handle is fixedly connected to the outer surface of the top of the sampling rod, a sampling barrel is arranged at the bottom of the sampling rod, a protection assembly is arranged on the outer surface of the sampling barrel, a material taking assembly is arranged in the sampling barrel, and the protection assembly comprises a sliding rod. The outer surface of the top of the sliding rod is slidably connected with the inner wall of the top of the sampling rod. The protective assembly is arranged, after sampling is completed, the deformed spring pushes the connecting frame to move downwards to block the corresponding sampling hole by releasing limitation on the limiting plate, molten steel can be effectively prevented from overflowing and splashing from the hole in the lifting process, and the possibility of safety accidents is reduced; and the molten steel sample can be isolated from the external environment by closing the sampling hole, so that the purity of the molten steel sample is ensured, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] This utility model relates to the field of molten steel sampling technology, and in particular to a molten steel sampling device. Background Technology

[0002] The quality of steel products depends on the control of inclusions, gas content, and chemical composition uniformity throughout the entire steelmaking process. The changes in steel purity during smelting in the LF ladle refining furnace and casting in the continuous casting tundish are particularly crucial to steel quality. Sampling and analysis of molten steel from the LF furnace ladle and tundish are essential to determine the source of inclusions and implement control measures. Furthermore, analyzing the total oxygen (T[O]) and nitrogen (N) content in the molten steel is vital to accurately understand the impact of process operations on steel quality in these two stages, enabling improvements to operational procedures.

[0003] In order to more accurately grasp the quality of molten steel in the LF furnace ladle and the continuous casting tundish, it is necessary to sample the molten steel in the two process stages. Molten steel samplers are widely used in processes such as electric arc furnaces, converters, continuous casting, and secondary refining.

[0004] In existing devices, the sampling holes on the surface of the sampling barrel cannot be closed during the sampling process of molten steel. Because molten steel is in a high-temperature liquid state, it has good fluidity and low viscosity, which easily causes splashing inside the sampling barrel. This not only may cause molten steel to overflow and splash out from the sampling holes, posing a serious threat to the personal safety of operators and increasing the possibility of safety accidents, but also external dust, impurities, etc. may enter the sampling barrel through the unclosed sampling holes, mix with the molten steel sample, and thus contaminate the molten steel sample, affecting the accuracy of the test results. Therefore, we propose a molten steel sampling device to solve the above problems. Utility Model Content

[0005] The main purpose of this invention is to provide a molten steel sampling device that can effectively solve the above problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A molten steel sampling device includes a sampling rod, a heat-insulating handle fixedly connected to the top outer surface of the sampling rod, a sampling bucket provided at the bottom of the sampling rod, a protective component provided on the outer surface of the sampling bucket, and a material collection component provided inside the sampling bucket.

[0008] Preferably, the protective component includes a sliding rod, the top outer surface of which is slidably connected to the top inner wall of the sampling rod, a handle is fixedly connected to the top of the sliding rod, a connecting frame is rotatably connected to the bottom outer surface of the sliding rod, and two baffles are fixedly connected to the bottom of the connecting frame.

[0009] Preferably, the sampling rod has square recesses on both the front and back sides, the inner walls of the two square recesses are slidably connected to the outer surface of the connecting frame, and the ends of the two baffles that are close to each other are in close contact with the outer surface of the sampling bucket.

[0010] Preferably, the inner wall of the sampling rod is fixedly connected to two fixing blocks, and the top of each fixing block is provided with a slot. The outer surface of the sliding rod is fixedly connected to a limit plate.

[0011] Preferably, a circular plate is fixedly connected to the outer surface of the sliding rod, the circular plate is located above the limiting plate, a spring is sleeved on the outer surface of the sliding rod, the bottom of the spring is fixedly connected to the top of the circular plate, and the top of the spring is fixedly connected to the inner wall of the top of the sampling rod.

[0012] Preferably, the material sampling assembly includes two round rods, one end of each round rod being fixedly connected to the outer surface of the sampling rod, and a rotating frame being rotatably connected to the outer surface of each of the two round rods.

[0013] Preferably, the bottoms of the two rotating frames are fixedly connected to the outer surface of the sampling bucket at one end close to each other, and the inner walls of the top and bottom of the sampling bucket are threaded.

[0014] Preferably, a sealing cap one is threadedly connected to the inner wall of the top of the sampling bucket, and a sealing cap two is threadedly connected to the inner wall of the bottom of the sampling bucket.

[0015] Preferably, a threaded rod is threadedly connected to the inner wall of the bottom of the sampling barrel, a rotating block is fixedly connected to the bottom of the threaded rod, and a pusher plate is rotatably connected to the outer surface of the top of the threaded rod. The outer surface of the pusher plate is slidably connected to the inner wall of the sampling barrel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model, by setting up a protective component, specifically, after sampling is completed, releases the restriction on the limiting plate, and the deformed spring pushes the connecting frame downward to block the corresponding sampling hole. This not only effectively prevents molten steel from overflowing and splashing from the hole during the lifting process, reducing the possibility of safety accidents, but also closes the sampling hole to isolate the molten steel sample from the external environment, ensuring the purity of the molten steel sample and improving the accuracy of the test results.

[0018] 2. This utility model, by setting up a material taking component, specifically involves removing the first and second sealing covers and then rotating the rotating block clockwise to drive the pusher plate to move upward within the inner wall of the sampling barrel. This allows workers to quickly and conveniently take out steel samples, which not only greatly increases the sampling frequency and provides timely data support for subsequent production process adjustments, thus accelerating the overall production pace, but also reduces the time the steel samples are exposed to air, making the test results more accurately reflect the true composition and properties of the molten steel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the sampling bucket of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the left side of the sampling bucket of this utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the sampling rod of this utility model on the left side;

[0023] Figure 5 This is a schematic diagram of the overall structure of the circular plate of this utility model.

[0024] In the diagram: 1. Sampling rod; 11. Insulated handle; 12. Sampling bucket; 2. Protective assembly; 21. Sliding rod; 211. Handle; 22. Connecting frame; 221. Baffle; 23. Fixing block; 231. Limiting plate; 24. Round plate; 241. Spring; 3. Material handling assembly; 31. Round rod; 32. Rotating frame; 33. Sealing cover one; 34. Sealing cover two; 341. Threaded rod; 342. Pushing plate; 343. Rotating block. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Example 1:

[0027] like Figure 1-5 As shown, this embodiment provides a molten steel sampling device, including a sampling rod 1, a heat-insulating handle 11 fixedly connected to the top outer surface of the sampling rod 1, a sampling bucket 12 provided at the bottom of the sampling rod 1, a protective component 2 provided on the outer surface of the sampling bucket 12, and a material collection component 3 provided inside the sampling bucket 12.

[0028] Specifically, in order to prevent molten steel from splashing from the inside of the sampling container to the outside during the sampling process, refer to... Figure 4 and Figure 5In this embodiment, the protective component 2 includes a sliding rod 21, the top outer surface of the sliding rod 21 is slidably connected to the top inner wall of the sampling rod 1, a handle 211 is fixedly connected to the top of the sliding rod 21, and a connecting frame 22 is rotatably connected to the bottom outer surface of the sliding rod 21. Two baffles 221 are fixedly connected to the bottom of the connecting frame 22.

[0029] For further details, please refer to [link / reference]. Figure 4 In this embodiment, the sampling rod 1 has square recesses on both the front and back sides. The inner walls of the two square recesses are slidably connected to the outer surface of the connecting frame 22, and the ends of the two baffles 221 that are close to each other are in close contact with the outer surface of the sampling bucket 12.

[0030] See Figure 5 The inner wall of the sampling rod 1 is fixedly connected to two fixing blocks 23, and the top of each fixing block 23 is provided with a slot. The outer surface of the sliding rod 21 is fixedly connected to a limiting plate 231.

[0031] Furthermore, a circular plate 24 is fixedly connected to the outer surface of the sliding rod 21. The circular plate 24 is located above the limiting plate 231. A spring 241 is sleeved on the outer surface of the sliding rod 21. The bottom of the spring 241 is fixedly connected to the top of the circular plate 24, and the top of the spring 241 is fixedly connected to the inner wall of the top of the sampling rod 1.

[0032] During implementation, when steel quality needs to be tested, the sliding rod 21 is first pulled upward by the handle 211 and slid upward within the inner wall of the sampling rod 1. As the sliding rod 21 slides upward, it causes the connecting frame 22 to move upward, which in turn causes the two baffles 221 to move upward. After the two baffles 221 have moved upward a certain distance, the restriction on the sampling barrel 12 is lifted. Simultaneously, the sliding rod 21 moves upward, causing the limiting plate 231 to move upward above the two fixed blocks 23. After the restriction on the sampling barrel 12 is lifted, the sliding rod 21 causes the limiting plate 231 to rotate, aligning it with the slots on the top of the two fixed blocks 23. At the same time, the upward sliding rod 21 also causes the circular plate 24 to move upward. As the circular plate 24 moves upward, it compresses the spring 241, causing it to deform. After the restriction on the sampling barrel 12 is lifted, the handle 211 is released, and the deformed spring 241 pushes the limiting plate 231 upward. The bottom of plate 231 engages with the slots on the top of the two fixing blocks 23, preventing the baffle 221 from falling back. When the sampling bucket 12 is placed in the molten steel, the molten steel enters the sampling bucket 12 through the two sampling holes. After sampling, the sliding rod 21 moves the limiting plate 231 upward a certain distance and rotates it to the initial angle. The deformed spring 241 will quickly push the connecting frame 22 downward due to the elastic force, so that the two baffles 221 can restrict the sampling bucket 12 again and block the corresponding sampling holes. This not only effectively prevents the molten steel from overflowing and splashing from the holes during the lifting process, avoiding scalding of operators and reducing the possibility of safety accidents, but also protects the personal safety of on-site personnel. Furthermore, closing the sampling holes can isolate the molten steel sample from the external environment, preventing dust, impurities and other foreign objects from entering the sampling bucket, ensuring the purity of the molten steel sample and improving the accuracy of the test results.

[0033] Example 2:

[0034] This embodiment adds a material handling component based on Embodiment 1. (See attached document.) Figure 2 and Figure 3 In this embodiment, the material taking component 3 includes two round rods 31. The ends of the two round rods 31 that are close to each other are fixedly connected to the outer surface of the sampling rod 1. The outer surfaces of the two round rods 31 are rotatably connected to a rotating frame 32.

[0035] For further details, please refer to [link / reference]. Figure 2-3 The bottoms of the two rotating frames 32 are fixedly connected to the outer surface of the sampling barrel 12 at one end close to each other. The sampling barrel 12 has threads on its top and bottom inner walls. A sealing cap 33 is threaded to the top inner wall of the sampling barrel 12, and a sealing cap 34 is threaded to the bottom inner wall of the sampling barrel 12.

[0036] See Figure 3The sampling barrel 12 has a threaded rod 341 threadedly connected to the inner wall at the bottom. A rotating block 343 is fixedly connected to the bottom of the threaded rod 341. A pusher plate 342 is rotatably connected to the outer surface at the top of the threaded rod 341. The outer surface of the pusher plate 342 is slidably connected to the inner wall of the sampling barrel 12.

[0037] When molten steel needs to be removed for testing after solidification, the restriction on the sampling barrel 12 is first lifted and it is rotated at a certain angle. After removing it by rotating the sealing cover 33 and the sealing cover 34 counterclockwise, the rotating block 343 is rotated clockwise to drive the threaded rod 341 to rotate in the inner wall of the bottom of the sampling barrel 12. Since the threaded rod 341 and the bottom of the sampling barrel 12 are threaded, when the threaded rod 341 rotates clockwise, it will push the pusher plate 342 to move upward in the inner wall of the sampling barrel 12. When the pusher plate 342 moves upward, it will push the solidified steel sample upward out of the inner wall of the sampling barrel 12, so that the staff can quickly and conveniently remove the steel sample. This not only greatly increases the sampling frequency and provides timely data support for subsequent production process adjustments, speeding up the overall production pace, but also reduces the time the steel sample is exposed to air, reduces the degree of oxidation of the steel sample, ensures the stability of the steel sample composition, and makes the test results more accurately reflect the true composition and performance of the molten steel.

[0038] The working principle of this utility model is as follows: When it is necessary to measure the quality of steel, firstly, the sliding rod 21 is pulled upward by the handle 211 and slides upward in the inner wall of the sampling rod 1. When the sliding rod 21 slides upward, it will drive the connecting frame 22 to move upward. When the connecting frame 22 moves upward, it will drive the two baffles 221 to move upward. When the two baffles 221 move upward a certain distance, they will release the restriction on the sampling barrel 12. At the same time, the sliding rod 21 will drive the limiting plate 231 to move upward above the two fixed blocks 23. After the restriction on the sampling barrel 12 is released, the sliding rod 21 drives the limiting plate 231 to rotate so that it corresponds to the slot position opened on the top of the two fixed blocks 23. At the same time, the sliding rod 21 will also drive the circular plate 24 to move upward. When the circular plate 24 moves upward, it will compress the spring 241 and cause it to deform. After the restriction on the sampling barrel 12 is released, the handle 211 is released, and the deformed spring 241 will push the limiting plate 241 to move upward. The bottom of the positioning plate 231 engages with the slots on the top of the two fixing blocks 23, preventing the baffle 221 from falling back. When the sampling bucket 12 is placed in the molten steel, the molten steel enters the sampling bucket 12 through the two sampling holes. After sampling, the limiting plate 231 is moved upward a certain distance and rotated to the initial angle by the sliding rod 21. The deformed spring 241 will quickly push the connecting frame 22 downward due to the elastic force, so that the two baffles 221 can restrict the sampling bucket 12 again and block the corresponding sampling holes. This not only effectively prevents the molten steel from overflowing and splashing from the holes during the lifting process, avoiding scalding of operators by molten steel and reducing the possibility of safety accidents, but also protects the personal safety of on-site personnel. Furthermore, closing the sampling holes can isolate the molten steel sample from the external environment, preventing dust, impurities and other foreign objects from entering the sampling bucket, ensuring the purity of the molten steel sample and improving the accuracy of the test results.

[0039] When molten steel needs to be removed for testing after solidification, the restriction on the sampling barrel 12 is first lifted and it is rotated at a certain angle. After removing it by rotating the sealing cover 33 and the sealing cover 34 counterclockwise, the rotating block 343 is rotated clockwise to drive the threaded rod 341 to rotate in the inner wall of the bottom of the sampling barrel 12. Since the threaded rod 341 and the bottom of the sampling barrel 12 are threaded, when the threaded rod 341 rotates clockwise, it will push the pusher plate 342 to move upward in the inner wall of the sampling barrel 12. When the pusher plate 342 moves upward, it will push the solidified steel sample upward out of the inner wall of the sampling barrel 12, so that the staff can quickly and conveniently remove the steel sample. This not only greatly increases the sampling frequency and provides timely data support for subsequent production process adjustments, speeding up the overall production pace, but also reduces the time the steel sample is exposed to air, reduces the degree of oxidation of the steel sample, ensures the stability of the steel sample composition, and makes the test results more accurately reflect the true composition and performance of the molten steel.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A molten steel sampling device comprising a sampling rod (1) provided at the bottom with a sampling bucket (12), characterized in that: The sampling barrel (12) is provided with a protection assembly (2) on the outer surface, and a material taking assembly (3) is arranged in the sampling barrel (12); The protection assembly (2) comprises a sliding rod (21), the top outer surface of the sliding rod (21) is in sliding connection with the top inner wall of the sampling rod (1), a handle (211) is fixedly connected to the top of the sliding rod (21), a connecting frame (22) is rotatably connected to the bottom outer surface of the sliding rod (21), and two baffles (221) are fixedly connected to the bottom of the connecting frame (22).

2. The molten steel sampling device according to claim 1, characterized by: The front and back surfaces of the sampling rod (1) are provided with square recesses, the inner walls of the two square recesses are in sliding connection with the outer surface of the connecting frame (22), and the ends of the two baffles (221) close to each other are in close contact with the outer surface of the sampling barrel (12).

3. The molten steel sampling device according to claim 2, characterized by: The inner wall of the sampling rod (1) is fixedly connected with two fixed blocks (23), and the top of each fixed block (23) is provided with a clamping groove.

4. The molten steel sampling device according to claim 1, characterized by: The outer surface of the sliding rod (21) is fixedly connected with a limiting plate (231).

5. The molten steel sampling device according to claim 4, characterized by: The outer surface of the sliding rod (21) is fixedly connected with a circular plate (24), the circular plate (24) is located above the limiting plate (231), the outer surface of the sliding rod (21) is provided with a spring (241), the bottom of the spring (241) is fixedly connected with the top of the circular plate (24), and the top of the spring (241) is fixedly connected with the top inner wall of the sampling rod (1).

6. The molten steel sampling device according to claim 1, characterized by: The material taking assembly (3) comprises two round rods (31), the ends of the two round rods (31) close to each other are fixedly connected with the outer surface of the sampling rod (1), and the outer surfaces of the two round rods (31) are rotatably connected with rotating frames (32).

7. The molten steel sampling device according to claim 6, characterized by: The ends of the bottoms of the two rotating frames (32) close to each other are fixedly connected with the outer surface of the sampling barrel (12), and the inner walls of the top and bottom of the sampling barrel (12) are provided with threads.

8. The molten steel sampling device according to claim 7, characterized by: The inner wall of the top of the sampling barrel (12) is threadedly connected with a sealing cover one (33), and the inner wall of the bottom of the sampling barrel (12) is threadedly connected with a sealing cover two (34).

9. The molten steel sampling device according to claim 8, characterized by: The inner wall of the bottom of the sampling barrel (12) is threadedly connected with a threaded rod (341), the bottom of the threaded rod (341) is fixedly connected with a rotating block (343), the outer surface of the top of the threaded rod (341) is rotatably connected with a pushing plate (342), and the outer surface of the pushing plate (342) is in sliding connection with the inner wall of the sampling barrel (12).

10. The molten steel sampling device according to claim 1, characterized by: The outer surface of the top of the sampling rod (1) is fixedly connected with a heat insulation handle (11).

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