Molten steel impurity removing device for steel plate casting

Abstract

The invention relates to the technical field of steel casting treatment, in particular to a molten steel impurity removing device for steel plate casting, which comprises a steel ladle and a hanging ring clamped at the top of the steel ladle, the outer side of the hanging ring is fixedly connected with a fixed beam, and the top of the fixed beam is fixedly connected with a telescopic cylinder; and the telescopic end of the telescopic cylinder penetrates through the fixed beam and is fixedly connected with a movable beam. The molten steel impurity removing device for steel plate casting has the advantages that molten steel does not need to be transferred, performance fluctuation and energy waste caused by rapid temperature reduction are avoided, meanwhile, the dual functions of impurity filtering and bubble eliminating are achieved, impurities are intercepted through the ceramic filter, bubbles are broken through the mechanical oscillation system, the purity of the molten steel is improved, and the service life of the molten steel is prolonged. Multiple fixing structures are matched with a dynamic reinforcing design, stable operation in a high-temperature environment is ensured, the ceramic frame can be quickly disassembled and replaced, the maintenance difficulty is reduced, the downtime is shortened, stable collection of impurities is ensured, and the oscillation system can also automatically clean impurities blocked by a filter sheet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel casting processing, in particular to a molten steel impurity removing device for steel plate casting. BACKGROUND

[0002] It is known that steel plate casting is a process of casting molten steel into a certain shape, size and performance steel plate through a specific process, and its process flow mainly includes smelting, casting and heat treatment: in the smelting stage, the furnace charge such as iron ore and alloy elements is prepared according to the material requirements, and is placed in an electric arc furnace or a converter for melting, while the composition of the molten steel is analyzed and adjusted in real time to meet the requirements; in the casting stage, there are two ways of traditional mold casting and continuous casting, the traditional mold casting is to pour the molten steel into a mold, and the steel plate is formed after cooling and demolding, and the continuous casting is to refine and control the temperature of the molten steel first, and then the molten steel flows into the crystallizer of the continuous casting machine for preliminary solidification, and the steel plate blank is formed after secondary cooling and blank cutting; the heat treatment needs to heat, quench and temper the steel plate to eliminate internal stress, improve the structure and performance.

[0003] The existing technology has the following problems: when the steel material is melted into molten steel, especially when scrap steel is used for smelting, there may be a lot of impurities that have not been completely burned out, and when scrap steel is used for smelting, too much water, oil or gas may produce bubbles, which eventually leads to the failure of the air in the mold cavity to be discharged in time and the formation of bubbles in the steel plate, so an additional process is needed to remove the bubbles, and it is difficult to complete the impurity removal and bubble removal directly in the ladle, and the repeated use of external equipment may cause the temperature of the molten steel to drop rapidly; Based on the above-mentioned situation, we find that the existing technology of steel plate casting is difficult to avoid the above problems, therefore, we propose a molten steel impurity removing device for steel plate casting which can be directly and quickly installed outside the ladle to continuously fish out the internal impurities, and has the effect of auxiliary bubble elimination. SUMMARY

[0004] (I) Technical problems solved In view of the shortcomings of the prior art, the present application provides a molten steel impurity removing device for steel plate casting, which has the advantages of being directly and quickly installed outside the ladle to continuously fish out the internal impurities, and has the effect of auxiliary bubble elimination.

[0005] (II) Technical solutions The technical problem of the present application is solved by the following technical scheme: a molten steel impurity removing device for steel plate casting, comprising a ladle and a hanging ring clamped on the top of the ladle, a fixed beam is fixedly connected to the outer side of the hanging ring, a telescopic cylinder is fixedly connected to the top of the fixed beam, the telescopic end of the telescopic cylinder penetrates through the fixed beam and is fixedly connected with a movable beam, a driving frame is fixedly connected to the bottom of the movable beam, a hollow frame is fixedly connected to the inner side of the driving frame, a top layer plate is movably connected to the outer side of the hollow frame, a lead screw is threadedly connected to the inner side of the top layer plate, a middle layer plate is rotatably connected to the bottom of the lead screw, and a residue filtering structure is arranged at the bottom of the middle layer plate. The residue filtering structure comprises a bottom layer plate, an insertion frame is fixedly connected to the bottom of the bottom layer plate, the insertion frame is L-shaped, a ceramic frame is inserted into the outer side of the insertion frame, a ceramic filter sheet is mounted on the inner side of the ceramic frame, the bottom of the ceramic frame is arc-shaped, and baffles are fixedly connected to the inner side of the ceramic frame on both sides.

[0006] By using the above technical scheme, the ladle is used as a molten steel container, the hanging ring can be directly clamped on the top of the ladle during use, the telescopic cylinder mounted by the fixed beam is used to install the movable beam, the vertical position of the driving frame is lifted by telescopic control, the hollow frame on the inner side of the driving frame is used to install the top layer plate and as the movement path of the top layer plate, the top layer plate can be rotated circumferentially along the hollow frame during use, the middle layer plate connected to the top layer plate and the residue filtering structure at the bottom also move together during rotation, the ceramic frame of the residue filtering structure is used to fix the ceramic filter sheet during movement, the ceramic filter sheet intercepts impurities in the molten steel at the position passed through during continuous movement, and the impurities are deposited on the inner side of the arc-shaped part at the bottom of the ceramic frame due to gravity and stored, so that the captured impurities can be treated when the structure is taken out of the molten steel, and when the mesh of the ceramic filter sheet is blocked due to long-term use, the ceramic frame can be taken out along the insertion frame and further fixed by bolts after installation of a new ceramic frame, according to the depth of the molten steel or different specifications and sizes of the ladle, the lead screw can be rotated along the top layer plate to drive the middle layer plate and the residue filtering structure connected thereto to vertically lift to adapt to the working height.

[0007] The present application further provides that the inner side of the hanging ring is provided with a top clamp, and the bottom of the top clamp is in contact with the top of the ladle.

[0008] By using the above technical scheme, the top clamp is provided, and when the hanging ring and the ladle are clamped, the top clamp is clamped on the top of the ladle to limit the position between the hanging ring and the ladle to preliminarily install the structure.

[0009] The application is further provided with a limiting rod fixedly connected to the top of the middle layer plate, and the limiting rod is slidingly connected to the top layer plate.

[0010] The above technical scheme sets the limiting rod, which slides along the top layer plate to limit the movement of the middle layer plate when the middle layer plate and the top layer plate move relative to each other, thereby avoiding rotation or angular deflection of the middle layer plate.

[0011] The application is further provided with an internal gear fixedly connected to the inner side of the hollow frame, a transmission frame slidingly connected to the outer side of the hollow frame, an external gear provided on the inner side of the transmission frame, and the external gear and the internal gear being in meshing connection, and the side of the top layer plate close to the transmission frame being fixedly connected to the transmission frame.

[0012] The above technical scheme sets the transmission frame connected to the hollow frame, and when the external gear rotates, the internal gear connected to the external gear moves to drive the hollow frame and the top layer plate connected thereto to move circumferentially.

[0013] The application is further provided with a motor and a speed reducer fixedly connected to the top of the transmission frame, and the output ends of the motor and the speed reducer penetrating through the transmission frame and being fixedly connected to the external gear.

[0014] The above technical scheme sets the motor and the speed reducer to drive the external gear to rotate at a slow speed, so that the movement speed of the whole residue filtering structure is slowed down, and on the basis of normal filtering, the impurities in the molten steel can be prevented from floating and being difficult to filter and collect due to too fast stirring speed.

[0015] The application is further provided with a stable frame rotatably connected to the outer side of the mounting ring, a pawl rotatably connected to the bottom of the stable frame, and the side of the pawl close to the ladle being clamped to the ladle.

[0016] The above technical scheme sets the stable frame cooperating with the pawl to rotate the stable frame along the mounting ring after the mounting ring is connected to the ladle, so that the pawl is clamped to the outside of the ladle to be further fixed, thereby preventing displacement or shaking due to unstable structure.

[0017] The application is further provided with a push-pull plate rotatably connected to the outer side of the stable frame.

[0018] The above technical scheme sets the push-pull plate, and when in use, the mounting ring is clamped to the top of the ladle, and the extension cylinder pushes the movable beam to descend, and the driving frame and the push-pull plate connected thereto also descend together, so that when the push-pull plate presses the stable frame, the stable frame rotates along the mounting ring and is stably attached to the mounting ring through the pawl.

[0019] The top layer plate is fixedly connected with a control motor at the bottom, the output end of the control motor is fixedly connected with a hammer, the outer side of the bottom layer plate is fixedly connected with an extension plate, the top of the extension plate is provided with a contact block, and the contact block is used in cooperation with the hammer.

[0020] The control motor is arranged, so that the hammer can be driven to rotate and knock the contact block during use, the extension plate connected with the contact block can transmit the impact to the bottom layer plate, the whole filter residue structure is vibrated, the air bubbles in the molten steel are removed through vibration, the impurities blocked in the ceramic filter sheet mesh hole are shaken off, and the normal filtering or the later cleaning difficulty is avoided.

[0021] The top of the bottom layer plate is fixedly connected with a tension spring, and the top of the tension spring is fixedly connected with the middle layer plate.

[0022] The tension spring is arranged to connect the bottom layer plate and the middle layer plate, when the bottom layer plate is impacted by the hammer, the bottom layer plate can move along the middle layer plate by deformation of the tension spring, and is reset by rebound of the tension spring.

[0023] The inner side of the bottom layer plate is slidably connected with a narrow rod, the top of the narrow rod is fixedly connected with the middle layer plate, and the tension spring is sleeved outside the narrow rod.

[0024] The narrow rod is arranged, when the bottom layer plate moves relative to the middle layer plate due to vibration, the bottom layer plate slides relative to the narrow rod to control the displacement to be vertical, and the radial deformation of the tension spring is avoided to prevent the reset difficulty or instability.

[0025] (Three) beneficial effects Compared with the prior art, the present application provides a molten steel impurity removing device for steel plate casting, which has the following beneficial effects: The molten steel impurity removing device for steel plate casting, by setting the ladle as the molten steel container, can directly clamp the hanging ring on the top of the ladle during use, and the telescopic cylinder installed through the fixed beam is used for installing the movable beam, and the vertical position of the active frame is lifted through telescopic control, the hollow frame inside the active frame is used for installing the top plate, and as the moving path of the top plate, the top plate can rotate along the hollow frame during use, and the middle plate connected with the top plate and the residue filter structure at the bottom also move together during the movement, the ceramic frame of the residue filter structure is used for fixing the ceramic filter sheet during the movement, and the ceramic filter sheet will intercept the impurities in the molten steel at the position passed during the continuous movement, and the impurities will be deposited in the circular arc portion inside the ceramic frame due to gravity, and the captured impurities are treated when the structure is taken out from the molten steel, and when the ceramic filter sheet mesh is blocked due to long-time use, the ceramic frame can be taken out along the plug-in frame, and is further fixed through the bolt after the installation of the updated ceramic frame, according to the depth of the molten steel or the ladle of different specifications, the top plate rotating screw rod can be used to drive the vertical lifting of the middle plate and the residue filter structure connected with the middle plate to adapt to the working height. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic view of the main structure in the application; Figure 2 It is a connection schematic view of the hanging ring in the application; Figure 3 It is a structure schematic view of the hanging ring in the application; Figure 4 It is a connection schematic view of the top plate in the application; Figure 5 It is a connection schematic view of the transmission frame in the application; Figure 6 It is a front view of the main structure in the application; Figure 7 It is a top view of the main structure in the application; Figure 8 It is a structure schematic view of the residue filter structure in the application.

[0027] In the figure: 1, ladle; 2, hanging ring; 3, fixed beam; 4, telescopic cylinder; 5, movable beam; 6, active frame; 7, lead screw; 8, middle layer plate; 9, residue filter structure; 91, bottom layer plate; 92, plug-in frame; 93, ceramic frame; 94, ceramic filter sheet; 95, baffle; 10, top clamp; 11, limiting rod; 12, internal gear; 13, transmission frame; 14, external gear; 15, motor and speed reducer; 16, stabilizing frame; 17, clamping jaw; 18, push-pull plate; 19, control motor; 20, hammer; 21, extension plate; 22, contact block; 23, tension spring; 24, narrow rod; 25, top layer plate; 26, hollow frame. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Embodiment 1 Please refer to Figures 1-8 A molten steel impurity removal device for steel plate casting, comprising a ladle 1 and a hanging ring 2 clamped on the top of the ladle 1, a fixed beam 3 fixedly connected to the outer side of the hanging ring 2, a telescopic cylinder 4 fixedly connected to the top of the fixed beam 3, a movable beam 5 fixedly connected to the telescopic end of the telescopic cylinder 4 and penetrating through the fixed beam 3, an active frame 6 fixedly connected to the bottom of the movable beam 5, a hollow frame 26 fixedly connected to the inner side of the active frame 6, a top layer plate 25 movably connected to the outer side of the hollow frame 26, a lead screw 7 threadedly connected to the inner side of the top layer plate 25, a middle layer plate 8 rotatably connected to the bottom of the lead screw 7, and a residue filter structure 9 provided at the bottom of the middle layer plate 8. The residue filter structure 9 comprises a bottom layer plate 91, a plug-in frame 92 fixedly connected to the bottom of the bottom layer plate 91, the plug-in frame 92 being in L shape, a ceramic frame 93 inserted into the outer side of the plug-in frame 92, a ceramic filter sheet 94 mounted on the inner side of the ceramic frame 93, and baffles 95 fixedly connected to the inner side of the ceramic frame 93 on both sides. By setting ladle 1 as molten steel container, in use can directly card in the top of ladle 1 hanging ring 2, with it through fixed beam 3 installation telescopic cylinder 4 is used to install movable beam 5, and through telescopic control initiative frame 6 vertical position lifting, located inside initiative frame 6 hollow frame 26 is used to install top floor 25, and as the moving path of top floor 25, in use can make top floor 25 along hollow frame 26 circumferential rotation, in the process of rotation, with top floor 25 connection middle floor 8 and bottom filter residue structure 9 also will move together, in the process of moving, filter residue structure 9 ceramic frame 93 is used to fix ceramic filter sheet 94, in the process of continuous movement, ceramic filter sheet 94 will intercept the impurities in the molten steel of the position passed, and the impurities will be deposited along ceramic filter sheet 94 because of gravity and fall in the arc-shaped portion inside the bottom of ceramic frame 93 storage, to capture the impurities for processing when the structure is taken out from the molten steel, and when long time use causes ceramic filter sheet 94 mesh to block needs to be replaced, can along with plug-in frame 92 take down ceramic frame 93, and after the installation of updating ceramic frame 93, through bolt further fixed, according to the depth of molten steel or different specifications size ladle 1, can along top floor 25 rotation screw rod 7, to drive the connection of middle floor 8 and the connection of filter residue structure 9 vertical lifting to adapt to the height of operation.

[0030] The inner side of the mounting ring 2 is provided with a top card 10, the bottom of the top card 10 is in contact with the top of the ladle 1, by arranging the top card 10, when the mounting ring 2 and the ladle 1 are clamped, the top card 10 will be clamped on the top of the ladle 1 to limit the position between the mounting ring 2 and the ladle 1 to preliminarily install the structure, the top of the middle layer plate 8 is fixedly connected with a limiting rod 11, the outer side of the limiting rod 11 is slidably connected with the top layer plate 25, by arranging the limiting rod 11, when the middle layer plate 8 and the top layer plate 25 relatively move, the limiting rod 11 will slide along the top layer plate 25 to limit the movement of the middle layer plate 8, avoiding rotating or angular deflection, the inner side of the hollow frame 26 is fixedly connected with an internal gear 12, the outer side of the hollow frame 26 is slidably connected with a transmission frame 13, the inner side of the transmission frame 13 is provided with an external gear 14, the external gear 14 is meshingly connected with the internal gear 12, the side of the top layer plate 25 close to the transmission frame 13 is fixedly connected with the transmission frame 13, by arranging the transmission frame 13, connected with the hollow frame 26, when the external gear 14 rotates, it will move along the internal gear 12 connected therewith, to drive the hollow frame 26 and the top layer plate 25 connected therewith to move circumferentially, the top of the transmission frame 13 is fixedly connected with a motor and a speed reducer 15, the output end of the motor and the speed reducer 15 penetrates through the transmission frame 13 and is fixedly connected with the external gear 14, by arranging the motor and the speed reducer 15, for slow driving the external gear 14 to rotate, so that the movement speed of the whole residue filtering structure 9 is slowed down, on the basis of normal filtering, avoiding the impurities in the molten steel floating and being difficult to filter and collect due to too fast stirring speed, the outer side of the mounting ring 2 is rotatably connected with a stable frame 16, the bottom of the stable frame 16 is rotatably connected with a clamping jaw 17, the side of the clamping jaw 17 close to the ladle 1 is clamped with the ladle 1, by arranging the stable frame 16 cooperating with the clamping jaw 17, for rotating the stable frame 16 along the mounting ring 2 after the mounting ring 2 is connected with the ladle 1, so that the clamping jaw 17 is clamped on the outside of the ladle 1 to be further fixed, avoiding displacement or shaking due to unstable structure, the outer side of the stable frame 16 is rotatably connected with a push-pull plate 18, the top of the push-pull plate 18 is rotatably connected with the outer side of the driving frame 6, by arranging the push-pull plate 18, when in use, the mounting ring 2 is clamped on the top of the ladle 1, and the extension cylinder 4 pushes the movable beam 5 to descend, the driving frame 6 and the push-pull plate 18 connected therewith will also be pressed down, when the stable frame 16 is pressed down by the push-pull plate 18, the stable frame 16 will rotate along the mounting ring 2, and is stably attached to the mounting ring 2 through the clamping jaw 17.

[0031] The working principle of the embodiment is as follows: first, installation and fixation are performed, the mounting ring 2 is clamped on the top of the ladle 1, the inner top clamp 10 is used for preliminary positioning, and meanwhile, the stable frame 16 on the outer side of the mounting ring rotates through the transmission of the push-pull plate 18 when the movable beam 5 driven by the telescopic cylinder 4 descends, the bottom clamping jaw 17 is clamped on the outer side of the ladle to form double fixation, the structure is ensured to be stable, then the position of the slag filtering structure is adjusted, the inner side of the top layer plate 25 is rotated in the vertical direction, the screw rod 7 drives the middle layer plate 8 and the slag filtering structure 9 to ascend and descend, the molten steel depth is accurately matched through the guiding action of the limiting rod 11, the outer gear 14 in the inner side of the transmission frame 13 is driven to rotate by the motor and the speed reducer 15 in the circumferential direction, the top layer plate and the slag filtering structure are slowly moved along the hollow frame through the meshing of the inner gear 12 in the inner side of the hollow frame 26, the molten steel is prevented from being excessively stirred, finally, impurity filtering and collection are realized, the ceramic filter sheet 94 of the slag filtering structure 9 intercepts solid impurities when moving in the molten steel, the two side baffles 95 assist in guiding, the impurities are deposited on the arc-shaped bottom of the ceramic frame 93 due to gravity and are collected, the ceramic frame can be quickly disassembled and replaced through the L-shaped plug-in frame 92, maintenance is facilitated, and the whole process does not need to transfer the molten steel, thereby reducing temperature loss.

[0032] Embodiment 2 Reference Figures 1-4 The molten steel impurity removing device for steel plate casting further comprises a control motor 19, the top of the control motor 19 is fixedly connected with the bottom of the top layer plate 25, a hammer 20 is fixedly connected to the output end of the control motor 19, an extension plate 21 is fixedly connected to the outer side of the bottom layer plate 91, a contact block 22 is arranged on the top of the extension plate 21, the contact block 22 and the hammer 20 are used in cooperation, the control motor 19 is arranged, in use, can drive the hammer 20 to rotate and knock the contact block 22, at this time, the extension plate 21 connected with the contact block 22 transmits the impact to the bottom layer plate 91, so that the whole slag filtering structure 9 is shaken, thereby removing the bubbles in the molten steel through shaking, and the impurities blocked in the mesh of the ceramic filter sheet 94 are shaken off, so that the normal filtering is not affected or the later cleaning is facilitated.

[0033] The top of the bottom layer plate 91 is fixedly connected with a tension spring 23, the top of the tension spring 23 is fixedly connected with the middle layer plate 8, the tension spring 23 is arranged for connecting the bottom layer plate 91 and the middle layer plate 8, when being impacted by the hammer 20, the bottom layer plate 91 can have a certain moving space along the middle layer plate 8 through the deformation of the tension spring 23 and is reset through the rebound of the tension spring 23, the inner side of the bottom layer plate 91 is slidably connected with a narrow rod 24, the top of the narrow rod 24 is fixedly connected with the middle layer plate 8, and the tension spring 23 is arranged on the outer side of the narrow rod 24, the narrow rod 24 is arranged, when the bottom layer plate 91 moves relative to the middle layer plate 8 due to shaking, the bottom layer plate 91 slides relative to the narrow rod 24 to a certain extent, so that the displacement is kept vertical, and the tension spring 23 is prevented from being deformed in the radial direction and being difficult to reset or being unstable.

[0034] The working principle of the embodiment is as follows: the bubble elimination and filter sheet anti-blocking functions are realized through the oscillation system, the motor 19 is fixed at the bottom of the top layer plate 25, the hammer 20 at the driving output end is rotated and periodically knocks the contact block 22 at the top of the extension plate 21, the impact is transmitted to the bottom layer plate 91 through the extension plate, the whole filter residue structure 9 is subjected to high-frequency oscillation, when the molten steel is subjected to the oscillation, the surface tension of the bubbles can be effectively broken, the bubbles are promoted to gather and float up and be discharged, meanwhile, the impurities blocked in the mesh holes of the ceramic filter sheet 94 are shaken off, and the filtering efficiency is maintained, in order to ensure the oscillation effect and the structural stability, the bottom layer plate 91 is connected with the middle layer plate 8 through the tension spring 23, an elastic buffer space is provided, when the tension spring outside the narrow rod 24 is deformed, the displacement direction is guided by the narrow rod, and the radial deviation is prevented to cause the structural instability.

[0035] The specific embodiment is only an explanation of the present application, and is not a limitation of the present application, and those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for removing impurities from molten steel for casting steel plates, comprising a ladle (1) and a hanger ring (2) attached to the top of the ladle (1), characterized in that: The outer side of the mounting ring (2) is fixedly connected with a fixed beam (3), the top of the fixed beam (3) is fixedly connected with a telescopic cylinder (4), the telescopic end of the telescopic cylinder (4) penetrates through the fixed beam (3) and is fixedly connected with a movable beam (5), the bottom of the movable beam (5) is fixedly connected with a driving frame (6), the inner side of the driving frame (6) is fixedly connected with a hollow frame (26), the outer side of the hollow frame (26) is movably connected with a top layer plate (25), the inner side of the top layer plate (25) is threadedly connected with a lead screw (7), the bottom of the lead screw (7) is rotatably connected with a middle layer plate (8), and the bottom of the middle layer plate (8) is provided with a residue filtering structure (9). The residue filtering structure (9) comprises a bottom layer plate (91), the bottom of the bottom layer plate (91) is fixedly connected with a plug-in frame (92), the plug-in frame (92) is L-shaped, the outer side of the plug-in frame (92) is plugged with a ceramic frame (93), the inner side of the ceramic frame (93) is mounted with a ceramic filter piece (94), the bottom of the ceramic frame (93) is arc-shaped, and the two sides of the inner side of the ceramic frame (93) are fixedly connected with baffles (95).

2. A device for removing impurities from molten steel for casting steel plates according to claim 1, wherein: The inner side of the mounting ring (2) is provided with a top clamp (10), and the bottom of the top clamp (10) is in contact with the top of the ladle (1).

3. A device for removing impurities from molten steel for casting steel plates according to claim 1, wherein: The top of the middle layer plate (8) is fixedly connected with a limiting rod (11), and the outer side of the limiting rod (11) is slidably connected with the top layer plate (25).

4. A device for removing impurities from molten steel for casting steel sheets according to claim 1, wherein: The inner side of the hollow frame (26) is fixedly connected with an internal gear (12), the outer side of the hollow frame (26) is slidably connected with a transmission frame (13), the inner side of the transmission frame (13) is provided with an external gear (14), the external gear (14) is in meshing connection with the internal gear (12), and the side, close to the transmission frame (13), of the top layer plate (25) is fixedly connected with the transmission frame (13).

5. A device for removing impurities from molten steel for casting steel sheets as set forth in claim 4, wherein: The top of the transmission frame (13) is fixedly connected with a motor and a speed reducer (15), the output end of the motor and the speed reducer (15) penetrates through the transmission frame (13) and is fixedly connected with the external gear (14).

6. A device for removing impurities from molten steel for casting steel sheets as set forth in claim 1, wherein: The outer side of the mounting ring (2) is rotatably connected with a stabilizing frame (16), the bottom of the stabilizing frame (16) is rotatably connected with a clamping jaw (17), and the side, close to the ladle (1), of the clamping jaw (17) is clamped with the ladle (1).

7. A device for removing impurities from molten steel for casting steel plates according to claim 6, wherein: The outer side of the stabilizing frame (16) is rotatably connected with a push-pull plate (18), and the top of the push-pull plate (18) is rotatably connected with the outer side of the driving frame (6).

8. A device for removing impurities from molten steel for casting steel sheets as set forth in claim 1, wherein: The bottom of the top layer plate (25) is fixedly connected with a control motor (19), the output end of the control motor (19) is fixedly connected with a hammer (20), the outer side of the bottom layer plate (91) is fixedly connected with an extension plate (21), the top of the extension plate (21) is provided with a contact block (22), and the contact block (22) is used in cooperation with the hammer (20).

9. A device for removing impurities from molten steel for casting steel plates according to claim 8, wherein: The top of the bottom layer plate (91) is fixedly connected with a tension spring (23), and the top of the tension spring (23) is fixedly connected with the middle layer plate (8).

10. A device for removing impurities from molten steel for casting steel sheets as set forth in claim 9, wherein: The inner side of the bottom layer plate (91) is slidably connected with a narrow rod (24), the top of the narrow rod (24) is fixedly connected with the middle layer plate (8), and the tension spring (23) is sleeved on the outer side of the narrow rod (24).

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