Continuous different depth molten steel sampler and use method thereof

Abstract

The present invention discloses a continuous steel sampler with different depths and a method for using the same. The structure includes a steel sampler assembly, a lifting mechanism, a lateral moving device, a lifting mechanism and a mounting frame. The steel sampler assembly includes an outer sleeve and an inner body. The inner body is movably sleeved with the outer sleeve. The outer sleeve is connected to the lateral moving device. The inner body is connected to the lifting mechanism. The lateral moving device is slidably connected to the side wall of the mounting frame. A lifting mechanism for controlling the upward and downward movement of the steel sampler assembly is provided at the bottom of the lateral moving device. The sampler can be used for sampling steel samples with different depths in containers such as die casting ladles, continuous casting ladles, intermediate ladles, and continuous casting crystallizers, and can especially be used for sampling steel samples with different depths and smelting slag at the steel slag interface. The composition, inclusions and other information of steel samples with different depths can be quickly understood. The sampling method saves time and improves efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a continuous molten steel sampler with different depths and a use method thereof. Background Art

[0002] The temperature and composition of molten steel during the smelting process are important bases for adjusting the molten steel process, so molten steel sampling has become an important process in the steel production process. The molten steel sampler can extract a part of the molten steel from the molten steel at a higher temperature for rapid analysis of the chemical composition, gas content and inclusions of the molten steel. If the sampling speed is slow, it will inevitably affect the data analysis rate and the timely response of the smelting process. Therefore, fast and accurate sampling is the key. The development of a simple and fast sampler is the key to the success of spectral analysis of the smelting process.

[0003] The sampler designed by the patent "Steel and iron sampler capable of taking multiple samples at a time (201821887084.5)" is a sampling assembly composed of multiple single-shot samplers. Multiple steel and iron samples can be taken out at one time each time. The invention patents "A method for making a steel sampler (201810003440.0)", "A tool for making a steel sampler and a method for making a steel sampler (201510338227.1)", and the utility model patent "New steel sampler for steelmaking (201821427972.9)" all propose different types of steel samplers, which generally have slag caps and formed vacuum tubes to prevent the entry of smelting slag, but none of them involve samplers and sampling methods for steel at different depths. At present, there are problems in molten steel samplers, such as slag caps and other packaging materials contaminating the molten steel, the sampling is prone to absorbing slag and oxygen, the length of the steel sample cannot be adjusted, continuous sampling is not possible, and simultaneous sampling of molten steel and slag cannot be achieved. Therefore, it is difficult to quickly and efficiently provide samples at different depths in the entire molten steel container and corresponding metallurgical information. Summary of the invention

[0004] The purpose of the present invention is to provide a continuous steel sampler with different depths and a method for using the same. The sampler can be used for sampling steel samplers with different depths in containers such as die casting ladles, continuous casting ladles, intermediate ladles, and continuous casting crystallizers, and can especially be used for sampling steel samplers and smelting slag at the steel-slag interface. The composition, inclusions, and other information of steel samplers with different depths can be quickly understood. The sampling method saves time and improves efficiency. The sampling method saves time and improves efficiency. The method is simple, easy to implement at the production site, and has strong process applicability.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a continuous steel sampler with different depths and a method of using the same, wherein the structure comprises a steel sampler assembly, a lifting mechanism, a lateral moving device, a lifting mechanism and a mounting frame, wherein the steel sampler assembly comprises an outer sleeve and an inner body, wherein the inner body is movably sleeved with the outer sleeve, the outer sleeve is connected with the lateral moving device, the inner body is connected with the lifting mechanism, the lateral moving device is slidably connected with the side wall of the mounting frame, and a lifting mechanism for controlling the upward and downward movement of the steel sampler assembly is provided at the bottom of the lateral moving device.

[0006] Furthermore, the molten steel sampling assembly includes an outer sleeve, an inner entity and a support rod. One side of the cylinder body of the outer sleeve is provided with an opening that is open at the upper end and closed at the lower end. The inner entity is composed of a cylinder and a slider. The cylinder is slidably mounted in the inner cavity of the cylinder. One side of the cylinder is provided with a longitudinal slider, and the slider slides in cooperation with the opening on one side of the cylinder. One side of the outer sleeve is provided with a support rod, the upper end of the support rod is provided with a connecting plate, and the connecting plate is connected to the transverse moving device. The upper end of the cylinder is provided with a control rod connected to the lifting mechanism.

[0007] Furthermore, the upper end of the slider outside the inner entity is a pointed end.

[0008] Furthermore, the side wall of the support rod is longitudinally provided with scale lines for controlling the depth of the molten steel sampling assembly placed in the molten steel.

[0009] Furthermore, the lateral moving device includes a lifting plate, a first motor, a rack and a gear. One end of the lifting plate is slidably connected to the side wall of the mounting frame. A slide groove is provided on the upper surface of the lifting plate, and a protrusion is provided on the lower surface of the rack. The protrusion slides in cooperation with the slide groove, and the rack cooperates with the gear for transmission. The gear is connected to the output shaft of the first motor, and the motor controls the rotation of the gear. The rotation of the gear controls the rack to move laterally along the slide groove on the lifting plate.

[0010] Furthermore, the lifting mechanism includes a steel wire rope, a driving wheel, a driven wheel and a second motor. The driving wheel and the driven wheel are respectively arranged at the two ends of the upper surface of the rack through a bracket. The driving wheel is connected to the output shaft of the second motor. One end of the steel wire rope is fixedly connected to the driving wheel, and the other end is connected to the upper end of the inner entity after passing through the transmission wheel.

[0011] Furthermore, the driving wheel and the driven wheel are respectively concave rotating wheels for facilitating winding of the wire rope.

[0012] Furthermore, the lifting mechanism includes a base, a rotating wheel, a screw, a worm wheel and a worm. The worm wheel and the worm are arranged in the inner cavity of the base. The worm rotates coaxially with the rotating wheel outside the base. The rotating wheel is rotated by the handle, and the rotating wheel drives the worm to rotate. The worm and the worm wheel cooperate for transmission. The worm wheel is threadedly connected to the screw. The rotation of the worm wheel controls the lifting and lowering of the screw, thereby controlling the up and down movement of the molten steel sampling assembly.

[0013] The method for using the continuous different-depth molten steel sampler and the method for using the same comprises the following steps:

[0014] a. Installation: Fix the connecting plate at the top of the support rod and the front end of the rack of the lateral moving device, and then connect the free end of the wire rope of the lifting mechanism to the control rod at the top of the inner entity.

[0015] b. Position control: Control the downward movement of the lead screw through the lifting mechanism, observe the scale of the support rod, and make the molten steel sampling assembly reach the corresponding depth in the molten steel; then control the lateral movement of the lateral moving device through the first motor, so as to adjust the horizontal movement of the molten steel sampling assembly at the corresponding depth of the molten steel;

[0016] c. Molten steel sampling: After determining the position of the molten steel sampling assembly in the molten steel, the second motor controls the pulling mechanism to move the steel rope upward while pulling the inner body. The inner body moves upward, and the slider on one side of the inner body opens the opening channel of the outer sleeve. The opening channel of the outer sleeve gradually opens from bottom to top. At this time, the molten steel flows into the space formed by the outer sleeve and the inner body, and gradually solidifies to form a steel sample of corresponding depth;

[0017] d. Sampling is completed: the inner body is moved out of the molten steel through the pulling mechanism, and the outer sleeve and the internal steel sample are moved out of the molten steel through the lifting mechanism. The steel sample is naturally cooled and taken out from the outer sleeve by pulling, cutting and ejecting.

[0018] Furthermore, as the opening channel of the outer sleeve gradually opens from bottom to top, molten steel of different depths gradually flows into the space formed by the outer sleeve and the inner body, so that steel samples of different depths can be extracted at one time.

[0019] Beneficial effects of the present invention:

[0020] 1. The sampler of the present invention can utilize the relative spatial position during the sampling process to gradually form molten steel so that nearby molten steel enters the space and solidifies into a sample. It can be used for sampling molten steel at different depths, and can also be used for simultaneous sampling of molten steel and metallurgical slag at the interface of steel slag. The whole process is free of pollution caused by relatively low-temperature packaging materials, which reduces the possibility of slag absorption and oxygen absorption.

[0021] 2. Since the opening channel of the outer sleeve is gradually opened from bottom to top, molten steel of different depths gradually flows into the space formed by the outer sleeve and the inner body, steel samples of different depths can be extracted at one time, and the length of the steel sample is adjustable. This sampling method saves time and improves efficiency for quickly understanding the composition, inclusions and other information of molten steel of different depths. The method is simple, easy to implement at the production site, and has strong process applicability.

[0022] 3. The upper end of the slider on the outside of the inner entity is a sharp prism. During the sampling process, when the slider with a sharp tip moves upward, it can remove the cold steel attached to the opening groove in the molten steel and open the channels inside and outside the sampler. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the present invention in use state;

[0024] Figure 2 It is a schematic diagram of the structure after sampling of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the lateral moving device;

[0026] Figure 4 It is a structural schematic diagram of the matching state between the outer sleeve and the inner entity;

[0027] Figure 5 It is a schematic diagram of the upward movement of the inner entity of the molten steel sampling assembly;

[0028] Figure 6 for Figure 4 A top view of

[0029] Figure 7 This is a schematic diagram of the structure of the molten steel sampling component.

[0030] In the figure:

[0031] 1 ladle, 2 molten steel, 3 slag, 4 molten steel sampling assembly, 41 outer sleeve, 411 cylinder, 412 opening, 42 inner entity, 421 cylinder, 422 slider, 423 control rod, 43 support rod, 44 connecting plate, 45 scale line, 5 wire rope, 6 driving wheel, 7 driven wheel, 8 lateral moving device, 81 first motor, 82 lifting plate, 83 gear, 84 rack, 85 slide, 9 second motor, 10 mounting frame, 11 lifting mechanism, 111 base, 112 rotating wheel, 113 screw. DETAILED DESCRIPTION

[0032] The continuous different depth molten steel sampler of the present invention and its use method are described in detail below with reference to the attached drawings of the specification.

[0033] like Figures 1 to 6As shown, the continuous steel sampler with different depths and the method of using the same of the present invention include a steel sampling assembly 4, a pulling mechanism, a lateral moving device 8, a lifting mechanism 11 and a mounting frame 10, wherein the steel sampling assembly 4 includes an outer sleeve 41 and an inner entity 42, wherein the inner entity 42 is movably mounted on the outer sleeve 41, wherein the outer sleeve 41 is connected to the lateral moving device 8, wherein the inner entity 42 is connected to the pulling mechanism, wherein the lateral moving device is slidably connected to the side wall of the mounting frame 10, and wherein a lifting mechanism 11 for controlling the up and down movement of the steel sampling assembly is provided at the bottom of the lateral moving device.

[0034] like Figure 5 As shown, the molten steel sampling assembly 4 includes an outer sleeve 41, an inner entity 42 and a support rod 43. One side of the barrel 411 of the outer sleeve 41 is provided with an opening 412 with an upper end open and a lower end closed. The inner entity 42 is composed of a cylinder 421 and a slider 422. The cylinder 421 is slidably sleeved with the inner cavity of the barrel 411. One side of the cylinder 421 is provided with a longitudinal slider 422, and the slider slides in cooperation with the opening on one side of the barrel. One side of the outer sleeve 41 is provided with a support rod 43, and the upper end of the support rod 43 is provided with a connecting plate 44, and the connecting plate 44 is connected to the rack 8 of the lateral moving device. The upper end of the cylinder is provided with a control rod 423 connected to the lifting mechanism. The top end of the control rod 423 is connected to the wire rope 5 of the lifting mechanism, and the upward movement of the inner entity 42 is controlled by the rise of the wire rope 5 to achieve molten steel sampling. When installing the molten steel sampling assembly 4 on the lateral moving device 8, the connecting plate 44 at the upper end of the support rod 43 cooperates with the front end of the rack to install and tighten through bolts and nuts. The outer sleeve is a metal part with a certain cavity structure and a sealed bottom. Except for the bottom part, the outer sleeve body is processed with a through opening groove of a certain width in the axial direction; when not sampling, the inner volume of the outer sleeve and the opening groove are occupied by the inner body and the slider respectively.

[0035] The outer sleeve, inner body, control rod and support rod of each component of the sampler can be made of the same material, or steel with lower carbon content or better quality, or high-temperature alloy, heat-resistant alloy, etc.

[0036] The upper end of the slider 422 outside the inner body 42 is a tip. The tip is a sharp angle. When the slider with the tip moves upward during the sampling process, it can remove the cold steel attached to the opening groove in the molten steel and open the channel inside and outside the sampler.

[0037] The side wall of the support rod 43 is longitudinally provided with scale lines 45 for controlling the depth of the molten steel sampling assembly into the molten steel. The lifting mechanism combined with the scale lines on the support rod can accurately control the different depths of the molten steel sampling assembly in the molten steel.

[0038] The lateral moving device 8 includes a lifting plate 82, a first motor 81, a rack 84 and a gear 83. One end of the lifting plate 82 is slidably connected to the side wall of the mounting frame 10. A slider is provided at the end of the lifting plate 82 to slide in cooperation with a slide groove on the side wall of the mounting frame. A slide groove 85 is provided on the upper surface of the lifting plate 82. A protrusion is provided on the lower surface of the rack 84. The protrusion slides in cooperation with the slide groove. The rack cooperates with the gear for transmission. The gear 83 is connected to the output shaft of the first motor 81. The motor controls the rotation of the gear, and the rotation of the gear controls the rack to move horizontally along the slide groove on the lifting plate.

[0039] The lifting mechanism includes a steel wire rope 5, a driving wheel 6, a driven wheel 7 and a second motor 9. The driving wheel and the driven wheel are respectively arranged at the two ends of the upper surface of the rack through a bracket. The driving wheel is connected to the output shaft of the second motor. One end of the steel wire rope is fixedly connected to the driving wheel, and the other end is connected to the upper end of the inner entity after passing through the transmission wheel.

[0040] The driving wheel 6 and the driven wheel 7 are respectively concave rotating wheels for facilitating winding of the wire rope. The concave rotating wheels can tightly wind the wire rope and prevent the wire rope from falling off from the side of the rotating wheel after winding.

[0041] The lifting mechanism 11 includes a base 111, a rotating wheel 112, a lead screw 113, a worm wheel and a worm. The worm wheel and the worm are arranged in the inner cavity of the base. The worm rotates coaxially with the rotating wheel outside the base. The rotating wheel is rotated by the handle, and the rotating wheel 112 drives the worm to rotate. The worm and the worm wheel cooperate to transmit. The worm wheel is threadedly connected with the lead screw. The rotation of the worm wheel controls the lifting and lowering of the lead screw 113, thereby realizing the control of the up and down movement of the molten steel sampling assembly 4, so that the molten steel sampling assembly can sample in molten steel at different depths. At the same time, when the sampling is completed, the entire molten steel sampling assembly is lifted out through the lifting mechanism for convenience of subsequent operation. The principle of the worm wheel and lead screw lifting machine is that the motor drives the worm to rotate, and the worm wheel and the worm wheel are used to rotate the worm wheel. The center of the worm wheel is an internal thread structure, which is equivalent to the nut of the lifting lead screw, and matches the lifting lead screw. The lifting and lowering of the lead screw is controlled by the rotation of the rotating wheel.

[0042] The method for using the continuous different-depth molten steel sampler and the method for using the same comprises the following steps:

[0043] a. Installation: Fix the connecting plate at the top of the support rod and the front end of the rack of the lateral moving device, and then connect the free end of the wire rope of the lifting mechanism to the control rod at the top of the inner entity.

[0044] b. Position control: Turn the wheel of the lifting mechanism to move the lead screw downward, and make the molten steel sampling assembly reach the corresponding depth in the molten steel by observing the scale of the support rod; then control the lateral movement of the rack of the lateral moving device through the first motor, thereby adjusting the horizontal movement of the molten steel sampling assembly at the corresponding depth of the molten steel.

[0045] c. Molten steel sampling: After determining the position of the molten steel sampling assembly in the molten steel, the second motor controls the driving wheel of the lifting mechanism to rotate. The driving wheel rotates and wraps the steel rope wire, so that the steel rope wire moves upward and pulls the inner entity. The inner entity moves upward, and the slider on one side of the inner entity opens the opening channel of the outer sleeve. The opening channel of the outer sleeve gradually opens from bottom to top. At this time, the molten steel flows into the space formed by the outer sleeve and the inner entity, and gradually solidifies to form a steel sample of the corresponding depth. The length of the steel sample can also be controlled according to the distance the inner entity moves upward. It has a wide range of uses and strong controllability.

[0046] d. Sampling is completed: the inner body is moved out of the molten steel through the pulling mechanism, and the outer sleeve and the internal steel sample are moved out of the molten steel through the lifting mechanism. The steel sample is naturally cooled and taken out from the outer sleeve by pulling, cutting and ejecting.

[0047] Since the opening channel of the outer sleeve is gradually opened from bottom to top, molten steel of different depths gradually flows into the space formed by the outer sleeve and the inner body, and steel samples of different depths can be extracted at one time, which solves the problem of only being able to extract steel samples of the same depth in the past, affecting the analysis results of the steel samples.

[0048] Embodiment 1:

[0049] Sampling of molten steel at a certain depth

[0050] a. Installation: Fix the connecting plate at the top of the support rod and the front end of the rack of the lateral moving device, and then connect the free end of the wire rope of the lifting mechanism to the control rod at the top of the inner entity.

[0051] b. Position control: Turn the wheel of the lifting mechanism to move the lead screw downward, and make the molten steel sampling assembly reach the required depth in the molten steel by observing the scale of the support rod; then control the lateral movement of the rack of the lateral moving device through the first motor, thereby adjusting the horizontal movement of the molten steel sampling assembly at the corresponding depth of the molten steel.

[0052] c. Molten steel sampling: After determining the position of the molten steel sampling assembly in the molten steel, the second motor controls the driving wheel of the lifting mechanism to rotate. The driving wheel rotates and wraps the steel rope wire, so that the steel rope wire moves upward and pulls the inner entity. The inner entity moves upward, and the slider on one side of the inner entity opens the opening channel of the outer sleeve. The opening channel of the outer sleeve gradually opens from bottom to top. At this time, the molten steel flows into the space formed by the outer sleeve and the inner entity, and gradually solidifies to form a steel sample of the corresponding depth. The length of the steel sample can also be controlled according to the distance the inner entity moves upward. It has a wide range of uses and strong controllability.

[0053] d. Sampling is completed: the inner body is moved out of the molten steel through the pulling mechanism, and the outer sleeve and the internal steel sample are moved out of the molten steel through the lifting mechanism. The steel sample is naturally cooled and taken out from the outer sleeve by pulling, cutting and ejecting.

[0054] Embodiment 2

[0055] Sampling of molten steel and smelting slag at the slag interface

[0056] a. Installation: Fix the connecting plate at the top of the support rod and the front end of the rack of the lateral moving device, and then connect the free end of the wire rope of the lifting mechanism to the control rod at the top of the inner entity.

[0057] b. Position control: Turn the wheel of the lifting mechanism to move the screw downward. By observing the scale of the support rod, the lower end of the molten steel sampling assembly reaches the lower part of the slag interface and the upper end is at the upper part of the slag interface. Then the rack of the lateral moving device is controlled by the first motor to move horizontally, thereby adjusting the horizontal movement of the molten steel sampling assembly.

[0058] c. Molten steel sampling: After determining the position of the molten steel sampling assembly, the second motor is used to control the driving wheel of the lifting mechanism to rotate. The driving wheel rotates and wraps around the steel rope, so that the steel rope moves upward and pulls the inner entity at the same time. The inner entity moves upward, and the slider on one side of the inner entity opens the opening channel of the outer sleeve. The molten steel flows into the space formed by the outer sleeve and the inner entity, and gradually solidifies to form a steel sample of corresponding depth. The inner entity is further pulled upward, and the steel slag flows into the space formed by the outer sleeve and the inner entity, and gradually solidifies to form a steel slag sample.

[0059] d. Sampling is completed: the inner body is moved out of the molten steel through the pulling mechanism, and the outer sleeve and the internal steel sample are moved out of the molten steel through the lifting mechanism. Natural cooling is carried out, and the molten steel sample and slag sample are taken out from the outer sleeve by pulling, cutting and ejecting.

[0060] The sampler of the present invention can utilize the relative spatial position during the sampling process to gradually form molten steel so that nearby molten steel enters the space and solidifies into a sample. It can be used for sampling molten steel at different depths, and can also be used for simultaneous sampling of molten steel and metallurgical slag at the interface of steel slag. The whole process is free of pollution caused by relatively low-temperature packaging materials, and the possibility of slag absorption and oxygen absorption is reduced. Moreover, the length of the steel sample is adjustable. For quickly understanding the composition, inclusions and other information of molten steel at different depths, the sampling method saves time and improves efficiency. Moreover, the method is simple, easy to implement at the production site, and has strong process applicability.

[0061] The above description is only used to illustrate some principles of the present invention. This specification is not intended to limit the present invention to the specific structure and application scope shown and described. Therefore, all corresponding modifications and equivalents that may be used belong to the patent scope applied for by the present invention.

[0062] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art.

Claims

1. Continuous different depth molten steel sampler, characterized by: The invention comprises a molten steel sampling assembly, a pulling mechanism, a lateral moving device, a lifting mechanism and a mounting frame, wherein the molten steel sampling assembly comprises an outer sleeve and an inner entity, wherein the inner entity is movably sleeved with the outer sleeve, the outer sleeve is connected with the lateral moving device, the inner entity is connected with the pulling mechanism, the lateral moving device is slidably connected with the side wall of the mounting frame, and a lifting mechanism for controlling the upward and downward movement of the molten steel sampling assembly is provided at the bottom of the lateral moving device; the molten steel sampling assembly comprises an outer sleeve, an inner entity and a support rod, wherein one side of the cylinder body of the outer sleeve is provided with an opening with an upper end open and a lower end closed, and the inner entity It consists of a cylinder and a slider, which is slidably mounted in the inner cavity of the cylinder. A longitudinal slider is provided on one side of the cylinder, and the slider slides in cooperation with an opening on one side of the cylinder. A support rod is provided on one side of the outer sleeve, and a connecting plate is provided on the upper end of the support rod, and the connecting plate is connected to a horizontal moving device. A control rod connected to a lifting mechanism is provided on the upper end of the cylinder. The upper end of the slider on the outer side of the inner entity is a pointed tip, and the tip is a sharp angular prism. During the sampling process, the slider with a pointed tip can remove the cold steel attached to the opening groove in the molten steel when it moves upward, thereby opening up the channels inside and outside the sampler.

2. The continuous different depth molten steel sampler according to claim 1 is characterized in that: The side wall of the support rod is longitudinally provided with scale lines for controlling the depth of the molten steel sampling assembly placed in the molten steel.

3. The continuous different depth molten steel sampler according to claim 1 is characterized in that: The lateral moving device includes a lifting plate, a first motor, a rack and a gear. One end of the lifting plate is slidably connected to the side wall of the mounting frame. A slide groove is provided on the upper surface of the lifting plate, and a protrusion is provided on the lower surface of the rack. The protrusion slides in cooperation with the slide groove, and the rack and the gear are transmitted in cooperation. The gear is connected to the output shaft of the first motor. The motor controls the rotation of the gear, and the rotation of the gear controls the rack to move laterally along the slide groove on the lifting plate.

4. The continuous different depth molten steel sampler according to claim 1 is characterized in that: The lifting mechanism includes a steel wire rope, a driving wheel, a driven wheel and a second motor. The driving wheel and the driven wheel are respectively arranged at the two ends of the upper surface of the rack through a bracket. The driving wheel is connected to the output shaft of the second motor. One end of the steel wire rope is fixedly connected to the driving wheel, and the other end is connected to the upper end of the inner entity after passing through the transmission wheel.

5. The continuous different depth molten steel sampler according to claim 4 is characterized in that: The driving wheel and the driven wheel are respectively concave rotating wheels for facilitating winding of the wire rope.

6. The continuous different depth molten steel sampler according to claim 1 is characterized in that: The lifting mechanism includes a base, a rotating wheel, a screw, a worm wheel and a worm. The worm wheel and the worm are arranged in the inner cavity of the base. The worm rotates coaxially with the rotating wheel outside the base. The rotating wheel is rotated by the handle, and the rotating wheel drives the worm to rotate. The worm and the worm wheel cooperate for transmission. The worm wheel is threadedly connected to the screw. The rotation of the worm wheel controls the lifting and lowering of the screw, thereby controlling the up and down movement of the molten steel sampling assembly.

7. The method for using the continuous different depth molten steel sampler according to any one of claims 1 to 6, characterized in that: The steps include: a. Installation: Fix the connection plate at the top of the support rod and the front end of the lateral moving device, and then connect the free end of the lifting mechanism with the control rod at the top of the inner entity; b. Position control: Control the downward movement of the lead screw through the lifting mechanism, observe the scale of the support rod, and make the molten steel sampling assembly reach the corresponding depth in the molten steel; then control the lateral movement of the lateral moving device through the first motor, so as to adjust the horizontal movement of the molten steel sampling assembly at the corresponding depth of the molten steel; c. Molten steel sampling: After determining the position of the molten steel sampling assembly in the molten steel, the second motor controls the pulling mechanism to move the steel rope upward while pulling the inner body. The inner body moves upward, and the slider on one side of the inner body opens the opening channel of the outer sleeve. The opening channel of the outer sleeve gradually opens from bottom to top. At this time, the molten steel flows into the space formed by the outer sleeve and the inner body, and gradually solidifies to form a steel sample of corresponding depth; d. Sampling is completed: the inner body is moved out of the molten steel through the pulling mechanism, and the outer sleeve and the internal steel sample are moved out of the molten steel through the lifting mechanism. The steel sample is naturally cooled and taken out from the outer sleeve by pulling, cutting and ejecting.

8. The method for using the continuous different depth molten steel sampler according to claim 7, characterized in that: As the opening channel of the outer sleeve gradually opens from bottom to top, molten steel of different depths gradually flows into the space formed by the outer sleeve and the inner body, so that steel samples of different depths can be extracted at one time.

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