An automatic slag removal device for cast iron smelting

Abstract

The present invention discloses an automatic slag removal device for cast iron smelting, comprising a crane beam, a guide frame, a suspension unit, and a slag removal assembly. The guide frame or suspension unit is mounted on the crane beam via a movable mechanism, and the guide frame, suspension unit, and slag removal assembly can move synchronously along the length of the crane beam. The slag removal assembly moves vertically between the guide rods of the guide frame through the suspension action of the suspension unit. The ends of the crane beam are mounted on guide rails and can move horizontally along the guide rails, orthogonal to the horizontal movement direction of the guide frame along the crane beam. In this way, the slag removal assembly can perform three-dimensional movement around the smelting furnace or ladle as needed. Combined with image detection and program control, the slag removal assembly is configured to automatically remove slag by rotating a roller frame. The size of the slag removal rake and the spacing between the rake teeth are adjustable, thereby adapting to the slag removal needs of different types of smelting furnaces and ladles, achieving automatic slag removal.

Description

Technical Field

[0001] The invention belongs to the technical field of smelting and casting, and particularly relates to an automatic slag removal device for cast iron smelting. Background Art

[0002] During the cast iron smelting and pouring process, slag removal must be carried out continuously and timely to ensure the quality of the final casting.

[0003] Traditional slag removal is mainly done manually, which has problems such as low efficiency and high safety risks. Therefore, automatic slag removal devices and methods are constantly being developed to meet the needs of different application environments.

[0004] For example, in the Chinese patent with publication number CN114226706A and titled "A Die Casting Automatic Slag Removal Device", a furnace cover is fixed on the top surface of the furnace, and an automatic slag removal robot is fixed on the top surface of the furnace cover. This design is only applicable to smelting furnaces, and automatic slag removal of ladles needs to be designed separately, resulting in low equipment utilization.

[0005] The publication number is CN217979882U and the name is "An automatic slag stripping and casting furnace". A slag stripping pipe is provided on the upper right side of the furnace body, the upper end of the furnace body is covered with a furnace cover, and an insulating baffle is provided in the middle of the interior of the furnace cover. An annular mold is provided on the inner wall of the furnace body, and a clearance hole is provided on the upper end of the annular mold for cooperating with the slag stripping pipe. A coil is provided in the mounting hole inside the annular mold, and a high-frequency generator is provided at the upper end of the outer arc surface of the furnace body; the slag stripping mechanism is arranged in the middle of the insulating baffle and inside the furnace body.

[0006] The existing automatic slag removal device is usually fixed on one side of the melting furnace or ladle, and can be automatically moved mechanically, usually horizontally, to automatically remove the slag from the upper opening of the melting furnace. The main problems are:

[0007] 1. The slag scraper is fixed on the table or the ground in the operation area, which may cause movement obstacles and affect the transportation of carts or other lifting operations;

[0008] 2. Existing automatic slag removal devices are generally only applicable to one type of melting furnace or ladle (hot metal ladle). There is a lack of a more universal device that can automatically remove slag from both the melting furnace and the ladle.

[0009] 3. There is a lack of a common automatic slag removal device that can adapt to melting furnaces or ladles with different opening sizes.

[0010] In short, the existing automatic slag removal device is difficult to meet the adaptive requirements of slag removal for smelting furnaces and / or ladles of different models, sizes and placement positions, and the equipment utilization rate is low. Summary of the Invention

[0011] In response to the above problems, the present invention designs an automatic slag removal device for cast iron smelting, which adopts a space hoisting operation mode and uses slag removal requirements of smelting furnaces and ladles of different sizes, which not only saves space, but also improves the degree of automation and facilitates operation.

[0012] The automatic slag removal device for cast iron smelting designed by the present invention comprises a crown crane beam, a guide frame, a suspension unit and a slag removal assembly, wherein the guide frame or the suspension unit is mounted on the crown crane beam through a transverse movement mechanism; the lower part of the guide frame comprises at least two fixedly connected guide rods, which are interconnected by an upper cross rod, and the slag removal assembly is mounted between the guide rods and moves up and down along the guide rods, and the guide rods are used to ensure the stability of the slag removal assembly during the up and down movement and the slag removal operation; the suspension unit is arranged on the crown crane beam, and includes a suspension or low-friction contact with the crown crane beam, and a cable passes through the crown crane beam and is connected to the lifting lug on the upper part of the slag removal assembly, and the up and down movement of the slag removal assembly along the guide rod is achieved by retracting and releasing the cable; the suspension unit, the guide frame and the slag removal assembly move horizontally along the crown crane beam synchronously;

[0013] The slag skimming assembly also includes a suspension frame, a lifting lug is provided on the top of the suspension frame, and both sides of the bottom of the suspension frame include a fixed ring as the rotation axis of the roller frame, a roller frame rotation drive motor is installed at an appropriate position under the suspension frame, and the motor drives the roller frame to rotate through a transmission mechanism, and the roller frame is sleeved on the fixed ring of the suspension frame; a slag skimming rake is detachably installed on the outside of the roller frame, and a slag collecting trough is detachably installed on the inside of the fixed ring, and the slag collecting trough does not rotate with the roller frame, and the installation position and number of the slag skimming rake are adjustable to facilitate the slag skimming operation of smelting furnaces and / or ladles with different opening sizes.

[0014] Furthermore, the upper portion of the suspension frame includes a support plate, which is connected to a fixed ring via at least two support rods, and the lifting lug is arranged at a middle position on the support plate.

[0015] Furthermore, the transmission mechanism includes a gear transmission mechanism; the roller frame includes a frame-type roller frame, that is, a structure without a cylindrical surface, and the circular bodies on both sides are connected by at least two transverse connecting rods. The circular body on one side of the roller frame driving motor is fixedly connected to the transmission mechanism and can rotate with the motor. The transverse connecting rod is parallel to the direction of the rotation axis of the roller frame.

[0016] Furthermore, a snap-in slot is provided on the outer side of the transverse connecting rod of the roller frame, and a slag rake can be detachably snapped onto the snap-in slot. The slag rake includes several single-tooth rakes and / or multi-tooth rakes, so that the number and spacing of the rake teeth of the slag rake can be adjusted, which is convenient for the slag skimming operation of smelting furnaces and / or ladles with different opening sizes. At the same time, the rake tooth spacing can be adjusted to adapt to the size of the slag block, which is also convenient for use in smelting other metals. The connection method between the slag rake and the roller frame includes other different methods such as screw connection, plug-in connection, etc.

[0017] Furthermore, a camera is provided on the suspension frame, and the camera includes an infrared camera, the specific installation position of which can be adjusted based on the visible molten iron liquid level, and is used to capture the image of the upper surface of the molten iron in the ladle.

[0018] Furthermore, a slag collecting agent pressure vessel is provided on the suspension frame, which is connected to a slag collecting agent spraying head via a slag collecting agent conveying pipe, and is used to spray the slag collecting agent onto the smelting furnace and / or ladle as needed.

[0019] Furthermore, a spheroidizing agent pressure vessel is provided on the suspension frame, which is connected to the spheroidizing agent spraying head through a spheroidizing agent delivery pipe, and is used to spray the spheroidizing agent into the ladle as needed. Generally, the spheroidizing agent is added to the ladle before injecting molten iron / molten steel.

[0020] Furthermore, the moving mechanism includes rollers, the guide frame includes a fixedly supported square bracket, the overhead crane beam includes an I-beam beam, a wire groove is provided in the middle of the overhead crane beam, and the slag rake includes an arc-shaped slag rake or a slag rake with an arc-shaped hook at the end (i.e., the shape of rake teeth) to facilitate the picking up of iron slag and smoothly bring the iron slag into the slag collecting trough as the roller frame rotates.

[0021] Furthermore, the slag collecting trough is provided with a certain downward tilt angle, generally not less than 10 degrees, so that the steel slag can slide directly along the slag collecting trough under the action of gravity into the slag collecting pan / slag collecting box (not shown in the figure) on one side of the smelting furnace or ladle.

[0022] Furthermore, the suspension unit includes a winch drum for winding the cable, a lifting drive motor connected to the winch drum, the winch drum and the lifting drive motor are installed on the base of the suspension unit, and the start and stop and speed of the lifting drive motor are controlled by a wired or wireless control system to achieve control of the up and down movement of the slag scraping assembly.

[0023] The advantages and beneficial effects of the present invention are as follows: the automatic slag removal device designed by the present invention for cast iron smelting utilizes the existing overhead crane (crane) equipment and is equipped with a hoisting automatic slag removal device, which not only reduces the burden and risk of manual operation, but also avoids the movement interference between the ground automatic slag removal device and other equipment. A unified installation interface is designed for slag removal tools of different specifications, which is convenient for on-demand replacement and adapts to the slag removal needs of smelting furnaces and ladles of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of an automatic slag removal device for cast iron smelting;

[0025] Figure 2 Schematic diagram of the partial structure of the roller frame;

[0026] Figure 3 This is a schematic diagram of the installation structure of the horizontal connecting rod between the scraping rake and the drum frame;

[0027] Figure 4 It is a schematic diagram of a slag rake with an arc-shaped hook at the end.

[0028] The following are marked in the figure:

[0029] Crown crane beam 1, guide frame 2, suspension unit 3, slag removal assembly 4, smelting furnace 5;

[0030] Wire duct 1.1;

[0031] Moving mechanism 2.1, guide rod 2.2;

[0032] Cable 3.1, winch drum 3.2, lifting drive motor 3.3, suspension unit base 3.4;

[0033] Lifting lug 4.1, suspension frame 4.2, roller frame drive motor 4.3, transmission mechanism 4.4, driving roller frame 4.5, slag rake 4.6, slag collecting trough 4.7, camera 4.8, slag collecting agent pressure vessel 4.9, slag collecting agent delivery pipe 4.10, slag collecting agent spraying head 4.11, spheroidizing agent pressure vessel 4.12, spheroidizing agent delivery pipe 4.13, spheroidizing agent spraying head 4.14, vibrator 4.15;

[0034] Support plate 4.2.1, support rod 4.2.2, fixing ring 4.2.3;

[0035] Connecting rod 4.5.1, annular body 4.5.2. DETAILED DESCRIPTION

[0036] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] Example 1, as Figure 1 As shown, the present invention is an automatic slag removal device for cast iron smelting, comprising a crown beam 1, a guide frame 2, a suspension unit 3 and a slag removal assembly 4;

[0038] The guide frame 2 or the suspension unit 3 is installed on the overhead crane beam 1 through a transverse movement mechanism 2.1; the lower part of the guide frame 2 includes at least two fixedly connected guide rods 2.2. In this embodiment, four guide rods are shown, which are interconnected through the upper cross bar. The slag removal assembly 4 is installed between the guide rods 2.2 and moves up and down along the guide rods. The guide rods are used to ensure the stability of the slag removal assembly during the up and down movement and the slag removal operation; the suspension unit, guide frame, and slag removal assembly can be synchronously moved horizontally along the length direction of the overhead crane beam. The horizontal movement mechanism adopts a conventional translation drive mechanism of the gantry crane (overhead crane). As shown in the figure, in this embodiment, the guide frame is provided with a moving mechanism in the I-steel groove of the crown crane beam, the suspension unit base 3.4 is fixedly connected to the guide frame, and the suspension unit, the guide frame, and the slag removal assembly are driven by a transverse motor (not shown in the figure) to synchronously move horizontally, and the suspension unit is suspended or in low-friction contact with the crown crane beam; or the suspension unit base 3.4 is installed on the crown crane beam through a moving mechanism, and the guide frame is directly fixedly connected to the base, and the suspension unit, the guide frame, and the slag removal assembly are also driven by a transverse motor to synchronously move horizontally (this driving method is not shown in the figure);

[0039] The suspension unit is arranged on the crane beam, including suspension or low-friction contact with the crane beam, and the cable 3.1 passes through the crane beam 1 and is connected to the lifting lug 4.1 on the upper part of the slag scraping assembly 4. The slag scraping assembly is moved up and down along the guide rod by retracting and extending the cable. The cable passes through the crane beam in the middle or on both sides. In this embodiment, the middle passage is achieved by providing a wire groove 1.1 on the crane beam; the suspension unit, guide frame and slag scraping assembly move horizontally along the crane beam synchronously;

[0040] The slag skimming assembly also includes a suspension frame 4.2, a lifting ear 4.1 is arranged on the top of the suspension frame 4.2, and each side of the bottom of the suspension frame includes a fixed ring 4.2.3, which is rotatably connected to the roller frame ring body 4.5.2 through a bearing, as a rotation fixed link of the roller frame 4.5 (playing the role of a rotating shaft), a roller frame rotation drive motor 4.3 is installed at an appropriate position at the lower part of the suspension frame, and the motor drives the roller frame 4.5 to rotate through a transmission mechanism 4.4. The roller frame is sleeved on the fixed ring of the suspension frame, including an inner sleeve or an outer sleeve. In this embodiment, the roller frame is sleeved outside the fixed ring, and the roller frame rotates around the fixed ring with the driving mechanism; a slag skimming rake 4.6 is detachably installed on the outside of the roller frame, and a slag collecting trough 4.7 is detachably installed on the inside of the fixed ring. The slag collecting trough does not rotate with the roller frame, and the installation position and number of the slag skimming rake are adjustable to facilitate the slag skimming operation of smelting furnaces and / or ladles with different opening sizes. The relevant local structures of the roller frame are as follows Figure 2 shown.

[0041] The ends of the overhead crane beam can be mounted on guide rails (similar to a trolley, not shown) and can move horizontally along the guide rails, orthogonal to the horizontal movement direction of the guide frame on the overhead crane beam. At the same time, the slag removal assembly can move vertically along the guide frame. In this way, the slag removal assembly can perform three-dimensional movement around the molten iron container (melting furnace or ladle) as needed. Combined with image detection and program control, automatic slag removal can be achieved, thereby facilitating the slag removal operation. This control technology is mature technology. For details, please refer to the Chinese patent document with publication number CN1507971, entitled "Automatic Slag Removal Method and Device". In this embodiment, the ends of the overhead crane beam are respectively mounted on the existing trolley guide rails in the workshop and can work synchronously with the trolley or independently.

[0042] The slag removal assembly of the illustrated automatic slag removal device is located above the smelting furnace 5 or the ladle and is movable horizontally and vertically, thereby avoiding motion interference and operational inconvenience caused by a fixed installation. At the same time, the size of the slag removal rake is replaceable to meet the needs of different slag removal environments; the drum frame drive motor drives the drum frame to drive the slag removal rake to rotate and bring the steel slag / iron slag from the surface of the molten iron into the slag collecting trough.

[0043] In this embodiment, the slag removal operation is generally carried out when the smelting furnace is smelting and after the ladle is filled with molten iron and transported to the casting table. The basic operation process is to first perform several slag removal in the smelting furnace, then add spheroidizing agent to the ladle and then add molten iron. After the spheroidization reaction is completed, slag removal begins and slag collecting agent is added in time. After several rounds of slag removal and slag collecting agent addition, the operation is stopped and the ladle is transported to the mold casting table.

[0044] Preferably, the upper part of the suspension frame 4.2 includes a support plate 4.2.1, which is connected to a fixed ring 4.2.3 through at least two support rods 4.2.2, and the lifting lug 4.1 is arranged in the middle position of the support plate; the figure shows 4 support rods, and every two support rods are fixedly connected to both sides of the fixed ring 4.2.3 at one end; when only two support rods are provided, they are generally connected to the middle of the two fixed rings respectively to improve the structural stability (not shown in the figure); the two fixed rings can also be connected by a semi-cylinder or at least two fixed rods (optional), so as to further ensure the stability of the drum frame structure of the rotating shaft, but at least the middle upper half of the structure is hollowed out to facilitate the collection of iron slag.

[0045] Preferably, the transmission mechanism 4.4 includes a gear transmission mechanism; the roller frame 4.5 includes a frame-type roller frame, that is, it has no cylindrical surface structure, and is connected to the circular bodies 4.5.2 on both sides by at least two transverse connecting rods 4.5.1. The circular body on one side of the roller frame driving motor 4.3 is fixedly connected to the transmission mechanism 4.4, and the connection method includes pin connection or screw connection, etc., and can rotate with the motor. The transverse connecting rod is parallel to the direction of the roller frame rotation axis; the connection method between the transverse connecting rod and the circular body includes plug-in connection, snap-on connection, screw connection, etc., and the present embodiment is a screw connection.

[0046] Preferably, Figure 3 As shown, a card slot is provided on the outer side of the horizontal connecting rod 4.5.1 of the roller frame, and a slag rake 4.6 can be detachably carded on the card slot. After plugging in, in order to ensure the stability of the rake teeth, a locking pin and other structures can be designed separately. The slag rake includes a plurality of single-tooth rakes and / or multi-tooth rakes, so that the number and spacing of the rake teeth of the slag rake can be adjusted, which is convenient for the slag skimming operation of smelting furnaces and / or ladles with different opening sizes. At the same time, the rake tooth spacing can be adjusted to adapt to the size of the slag block, which is also convenient for use when smelting other metals; the connection method of the slag rake and the roller frame includes other different methods such as screw connection and plugging; the shape of the rake teeth of the slag rake is arc-shaped (such as Figure 3 shown).

[0047] The moving mechanism 2.1 is a roller, the guide frame is a fixedly supported square bracket (including a rectangle), and the overhead crane crossbeam is an I-beam.

[0048] Preferably, the slag collecting trough is set at a certain downward inclination angle, generally not less than 10 degrees, to facilitate the steel slag to slide directly along the slag collecting trough under the action of gravity into the slag collecting pan / slag collecting box (not shown in the figure) on the side of the smelting furnace or ladle. The slag collecting trough here can also be called a slag guide trough; a vibrator 4.15 is installed on the lower surface of the slag collecting trough close to the slag collecting pan / slag collecting box. When the iron slag does not slide smoothly, the vibrator can be started manually or automatically to vibrate the slag collecting trough to facilitate the sliding of the iron slag; the slag collecting trough can also be installed horizontally. In this case, manual or other tools / devices are required to clean the iron slag. The connection method between the slag collecting trough and the fixed ring is generally a snap-on method, which is convenient for disassembly and replacement.

[0049] Preferably, the suspension unit includes a winch drum 3.2 for winding the cable 3.1, a lifting drive motor 3.3 connected to the winch drum, the winch drum and the lifting drive motor are installed on the suspension unit base 3.4, and the start and stop and speed of the lifting drive motor are controlled by a wired or wireless control system to achieve control of the up and down movement of the slag scraping assembly.

[0050] Example 2 differs from Example 1 in that a spheroidizing agent pressure vessel 4.12 is further provided on the hanger, connected to a spheroidizing agent spraying head 4.14 via a spheroidizing agent delivery pipe 4.13, for spraying spheroidizing agent into the ladle as needed. Generally, spheroidizing agent is added to the ladle before injecting molten iron / molten steel.

[0051] Example 3 differs from Example 2 in that a slag collecting agent pressure vessel 4.9 is further provided on the suspension frame, which is connected to a slag collecting agent spraying head 4.11 via a slag collecting agent delivery pipe 4.10, for spraying the slag collecting agent onto the smelting furnace and / or ladle as needed.

[0052] In Examples 2 and 3, the slag collector and the spheroidizing agent are generally sprayed as needed by controlling the spraying pressure of the pressure vessel. In traditional processes, this operation is generally completed manually. The design of the present invention can achieve automatic spraying, but the addition of corresponding reagents to the pressure vessel is still done manually.

[0053] Example 4 is different from Example 3 in that a camera 4.8 is further provided on the hanging frame. The camera comprises an infrared camera, the specific installation position of which can be adjusted based on the visible molten iron liquid level, and is used to capture the image of the upper surface of the molten iron in the smelting furnace or the ladle, and to judge whether it is necessary to spray a slag collector and / or perform a slag removal operation by analyzing the image grayscale distribution. Ideally, when there is no more slag, the grayscale distribution of the molten iron surface image should be uniform and the grayscale value should be above a certain threshold. When obvious slag appears, the general image grayscale analysis method can easily analyze it. The specific area and size of the grayscale anomaly can be determined, so that the next step of spraying the slag collecting agent and / or performing the slag scraping operation can be determined according to the specific analysis results; generally, when the grayscale abnormal area is very small but the scattered number is large (both can be judged by the threshold), it is necessary to spray the slag collecting agent and perform the slag scraping operation; when the grayscale abnormal area is large, the slag scraping operation can be performed directly; according to engineering practice, the total number of spraying the slag collecting agent is limited to a certain extent, such as generally not more than 5 times; for specific implementation, reference can also be made to the Chinese patent document with publication number CN1507971 and the name "Automatic Slag Scraping Method and Device".

[0054] Example 5 is different from Example 1 in that the teeth of the scraping rake are shaped with arc-shaped hooks at the ends, such as Figure 4 As shown, it is convenient to pick up the iron slag and bring it into the slag collecting trough smoothly as the drum frame rotates.

[0055] The components to be controlled, such as the lifting drive motor, horizontal moving mechanism, roller frame drive motor, camera, spheroidizing agent pressure vessel, slag collecting agent pressure vessel, vibrator, etc. described in the above embodiments are connected to the external controller by wire or wirelessly, which facilitates automatic or manual intervention control.

[0056] The basic principle of the present invention is:

[0057] 1. Refer to the gantry structure design, or use the existing gantry track to set up a hoisting automatic slag removal device. To overcome the instability of ordinary suspension equipment during slag removal operation (which is prone to shaking and rotation), a special guide frame limiting structure is designed. This not only ensures the stability of the up and down (vertical) movement of the slag removal assembly, but also drives the slag removal assembly to perform synchronous translational movement. The integrated suspension unit drives the slag removal assembly to move vertically, and the overhead crane crossbeam to perform translational movement on the track. That is, the slag removal assembly can perform three-dimensional movement around the smelting furnace or ladle as needed, thus overcoming the problem of motion interference caused by ground-fixed slag removal devices.

[0058] 2. The detachable drum-type slag removal device and the adjustable slag rake size and rake tooth spacing can adapt to the slag removal requirements of different types of melting furnaces and ladles, realizing the adaptability of the automatic slag removal device for cast iron smelting of the present invention to different on-site slag removal requirements;

[0059] 3. Combining the camera (image detection) with the spheroidizing agent, slag collecting agent pressure vessel and spraying device design can improve the degree of automation of the slag removal operation (the program control method of the components that need to be controlled, such as the lifting drive motor, horizontal moving mechanism, roller frame drive motor, camera, spheroidizing agent pressure vessel, slag collecting agent pressure vessel, etc., can be designed with reference to the existing technology).

[0060] The above are only some representative embodiments of the automatic slag scraping device for cast iron smelting of the present invention. In fact, the shape of the slag scraping rake, the structural form of the drum frame, the interface between the slag scraping rake and the drum frame, the stabilization method of the slag scraping assembly, etc. can be designed according to actual needs. There are many preferred combination embodiments or variant embodiments. These changes do not exceed the design ideas of the present invention and should also be regarded as the scope of protection of the present invention. They will not be listed one by one here.

Claims

1. An automatic slag removal device for cast iron smelting, comprising a crane beam (1), a guide frame (2), a suspension unit (3) and a slag removal assembly (4), characterized in that: The guide frame (2) or the suspension unit (3) is mounted on the overhead crane beam (1) via a moving mechanism (2.1), the guide frame (2) comprises at least two fixedly connected guide rods (2.2), and the slag removal assembly (4) is mounted between the guide rods; The suspension unit is arranged on the overhead crane beam, and the cable (3.1) passes through the overhead crane beam and is connected to the lifting lug (4.1) on the upper part of the slag removal assembly; The slag skimming assembly also includes a suspension frame (4.2), a lifting lug (4.1) is arranged on the top of the suspension frame (4.2), and the bottom of the suspension frame includes a fixed ring (4.2.3) on both sides. A roller frame drive motor (4.3) is installed at the lower part of the suspension frame, and the motor drives the roller frame (4.5) to rotate through a transmission mechanism (4.4), and the roller frame is sleeved on the fixed ring of the suspension frame; a slag skimming rake (4.6) is detachably installed on the outer side of the roller frame, and a slag collecting trough (4.7) is detachably installed on the inner side of the fixed ring, and the slag collecting trough is set at a downward inclination angle; The suspension frame is also provided with a slag collecting agent pressure vessel (4.9), which is connected to the slag collecting agent spraying head (4.11) via a slag collecting agent conveying pipe (4.10); A snap-in slot is provided on the outside of the roller frame transverse connecting rod (4.5.1), and a slag rake (4.6) can be detachably snap-into the snap-in slot. The slag rake includes a plurality of single-tooth rakes and / or multi-tooth rakes. The number and spacing of the slag rake teeth are adjustable, which facilitates the slag-skimming operation of smelting furnaces and / or ladles with different opening sizes. At the same time, the spacing of the rake teeth can be adjusted to adapt to the size of the slag block, which is also convenient for use in smelting other metals.

2. The automatic slag removal device for cast iron smelting according to claim 1, characterized in that: The upper portion of the suspension frame (4.2) comprises a support plate (4.2.1) connected to a fixed ring (4.2.3) via at least two support rods (4.2.2), and a lifting lug (4.1) is provided on the support plate.

3. An automatic slag removal device for cast iron smelting according to claim 1 or 2, characterized in that: The transmission mechanism (4.4) includes a gear transmission mechanism; the roller frame (4.5) includes a frame-type roller frame, which is connected by at least two transverse connecting rods ( 4.5.1) connects the circular bodies (4.5.2) on both sides, and the circular body on one side of the roller frame drive motor (4.3) is fixedly connected to the transmission mechanism (4.4).

4. The automatic slag removal device for cast iron smelting according to claim 3, characterized in that: A camera (4.8) is also provided on the suspension frame.

5. The automatic slag removal device for cast iron smelting according to claim 4, characterized in that: A spheroidizing agent pressure container (4.12) is also provided on the suspension frame and is connected to the spheroidizing agent spraying head (4.14) via a spheroidizing agent delivery pipe (4.13).

6. An automatic slag removal device for cast iron smelting according to claim 1 or 2, characterized in that: The moving mechanism (2.1) includes a roller, the guide frame includes a fixedly supported square bracket, the overhead crane crossbeam includes an I-beam, a wire groove (1.1) is provided in the middle of the overhead crane crossbeam, and the slag rake includes an arc-shaped slag rake or a slag rake with an arc-shaped hook at the end.

7. An automatic slag removal device for cast iron smelting according to claim 1 or 2, characterized in that: A vibrator (4.15) is installed on the lower surface of the slag collecting trough close to the slag collecting plate / slag collecting box.

8. An automatic slag removal device for cast iron smelting according to claim 1 or 2, characterized in that: The suspension unit comprises a winch drum (3.2) for winding a cable (3.1), and a lifting drive motor (3.3) connected to the winch drum in a transmission manner. The winch drum and the lifting drive motor are mounted on a suspension unit base (3.4).

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