Ladle splash-proof pouring device

Abstract

The utility model discloses a ladle splash-proof pouring device which comprises a ladle, a positioning shaft fixedly connected to the ladle, a lifting frame rotationally connected to the positioning shaft and a first lifting ring fixedly connected to the lifting frame and connected with a crane. The pouring nozzle is fixedly connected to the ladle; the rotating shaft is rotationally connected to the pouring nozzle; the flow guide plate is fixedly connected to the rotating shaft and is used for guiding the molten iron; the opening and closing assembly is mounted on the pouring nozzle; the ladle is driven by the overturning assembly to overturn with the positioning shaft as the axis, and when the ladle is overturned, the rotating shaft is driven by the opening and closing assembly to rotate together with the flow guide plate. The opening size of the outlet of the pouring nozzle is changed through the flow guide plate with the adjustable opening angle, so that molten iron is guided to flow out stably at different flow stages, the stability of the molten iron during flowing out is guaranteed, and splashing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, specifically to a splash-proof pouring device for molten iron ladles. Background Technology

[0002] Molten iron ladles are widely used in casting workshops to store and transport molten iron to the casting area. During the casting process, due to the simple structure of the ladle opening and the lack of guidance, the molten iron stream is prone to violent splashing, which not only wastes the high-temperature molten metal, but also frequently causes burn accidents and poses a serious threat to surrounding equipment and the environment.

[0003] According to the patent application CN111822688A, "This invention discloses a ladle for casting, including a ladle body, a gantry, and a locking mechanism. The ladle body has symmetrical main shafts on both sides, and the main shafts have annular grooves. A positioning block is fastened to the right main shaft, and the positioning block has a cylindrical hole. A handle is provided on the back of the ladle body. The gantry is rotatably hooked to the annular groove. A second cylindrical hole is provided on the right side of the gantry, and a guide sleeve is provided inside the second cylindrical hole. The locking mechanism consists of a handle, a support, a lock handle, a support frame, a locking pin, a compression spring, and a steel wire rope. When pouring molten iron from a large ladle into the ladle body, the ladle body is prevented from shaking, and the molten iron is prevented from splashing out and causing burns. The left hand holds the handle, and the lock handle is squeezed to release the limiting lock on the ladle body. The right hand pulls the handle to stably hold the ladle body and align it with the pouring port of the mold. It is safe, stable, and convenient to operate."

[0004] However, based on the above, the aforementioned device has the following problems:

[0005] The pouring nozzle of a molten iron ladle is usually an open structure with a fixed angle. In the early and late stages of pouring, the flow rate of molten iron is small and the flow velocity is slow. It is easy for the molten iron to flow back or scatter along the lower edge of the nozzle due to surface tension, resulting in splashing. In the middle stage of pouring, the flow rate of molten iron is large and the impact force is strong, which can easily generate turbulence and splashing at the outlet. The fixed angle cannot take into account the flow state control at different flow stages. Utility Model Content

[0006] The purpose of this invention is to provide a splash-proof pouring device for molten iron ladles, in order to solve the problem of molten iron splashing caused by the fixed-angle and open pouring nozzle mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a molten iron ladle anti-splashing pouring device, comprising a molten iron ladle, a positioning shaft fixedly connected to the molten iron ladle, a lifting frame rotatably connected to the positioning shaft, and a first lifting ring fixedly connected to the lifting frame and connected to a crane. It also includes a pouring nozzle fixedly connected to the molten iron ladle, a rotating shaft rotatably connected to the pouring nozzle, a guide plate fixedly connected to the rotating shaft for guiding the flow of molten iron, an opening and closing assembly installed on the pouring nozzle, a flipping assembly installed on the lifting frame, and a buffer assembly installed on the molten iron ladle. The flipping assembly drives the molten iron ladle to flip around the positioning shaft as the axis, and when the molten iron ladle flips, the opening and closing assembly drives the rotating shaft and the guide plate to rotate.

[0008] In the preferred embodiment of this technical solution, there are two rotating shafts, which are symmetrically installed on the pouring nozzle. Each rotating shaft is fixedly connected to a guide plate, which pushes the guide plate to unfold when the molten iron flows on the pouring nozzle.

[0009] According to the preferred embodiment of this technical solution, the opening and closing assembly includes a connecting plate fixedly connected to the rotating shaft, a first spring fixedly connected between the connecting plate and the pouring nozzle, a slider slidably connected to the pouring nozzle, a counterweight fixedly connected to the slider, a roller seat fixedly connected to the counterweight, and a roller body rotatably connected to the roller seat and rolling on the connecting plate.

[0010] In the preferred embodiment of this technical solution, the pouring nozzle has a groove at the corresponding position of the slider. When the molten iron ladle is tilted, the slider slides in the groove by gravity.

[0011] In the preferred embodiment of this technical solution, the roller body is made of a high-temperature resistant material, and the first spring is compressed or extended when the roller body rolls on the connecting plate.

[0012] Based on the preferred embodiment of this technical solution, the flipping assembly includes a positioning frame fixedly connected to the lifting frame, a drive motor fixedly connected to the positioning frame, a winding shaft fixedly connected to the output end of the drive motor and rotatably connected to the positioning frame, a second lifting ring fixedly connected to the molten iron ladle, and a steel wire rope fixedly connected between the second lifting ring and the winding shaft. When the winding shaft rotates, it winds up the steel wire rope and pulls the second lifting ring closer to the winding shaft through the steel wire rope.

[0013] According to the preferred embodiment of this technical solution, the buffer assembly includes a first fixed plate fixedly connected to the molten iron ladle, a second fixed plate fixedly connected to the lifting frame, a slide rod slidably connected to the second fixed plate, a stop plate fixedly connected to the slide rod, and a second spring fixedly connected between the stop plate and the second fixed plate. When the slide rod slides on the second fixed plate, the second spring is compressed or extended.

[0014] In this preferred embodiment of the technical solution, the end of the abutment closest to the first fixed plate is arc-shaped, and the abutment contacts the first fixed plate through the arc-shaped end.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By using a guide plate with an adjustable opening angle, the size of the opening at the nozzle outlet can be changed, thereby guiding the molten iron to flow out smoothly at different flow stages, ensuring the stability of the molten iron flow and reducing splashing.

[0017] 2. The opening and closing assembly is driven by the gravity of the counterweight block in conjunction with the impact force of the molten iron on the guide plate. This allows the opening degree of the guide plate to be automatically adjusted according to the changes in the tilt angle of the molten iron ladle and the changes in the molten iron flow rate. This achieves adaptive matching for different flow stages without manual intervention, with a sensitive response, significantly improving the stability and safety of the pouring process.

[0018] 3. The buffer assembly compresses the second spring through the contact between the first fixed plate and the abutment plate, effectively absorbing the impact energy when the molten iron ladle resets, avoiding vibration and equipment damage caused by rigid collision. The arc-shaped design of the abutment plate ensures that it always maintains good contact with the first fixed plate, making the buffering process smooth and reliable, and extending the service life of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one embodiment of the anti-splashing pouring device for molten iron ladles according to the present invention;

[0020] Figure 2 This is a schematic diagram of the pouring nozzle position structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the opening and closing component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the flip-up component structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the buffer component and the molten iron ladle of this utility model.

[0024] Figure 6 This is a schematic diagram of the buffer component structure of this utility model.

[0025] In the diagram: 11. Ladle; 12. Positioning shaft; 13. Lifting frame; 14. First lifting ring; 15. Pouring nozzle; 16. Rotating shaft; 17. Guide plate; 21. Connecting plate; 22. First spring; 23. Sliding block; 24. Counterweight; 25. Roller seat; 26. Roller body; 31. Positioning frame; 32. Drive motor; 33. Rewinding shaft; 34. Second lifting ring; 35. Wire rope; 41. First fixing plate; 42. Second fixing plate; 43. Sliding rod; 44. Support plate; 45. Second spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 6 This utility model provides an embodiment of a molten iron ladle anti-splashing pouring device, including a molten iron ladle 11, a positioning shaft 12 fixedly connected to the molten iron ladle 11, a lifting frame 13 rotatably connected to the positioning shaft 12, and a first lifting ring 14 fixedly connected to the lifting frame 13 and connected to a crane. It also includes a pouring nozzle 15 fixedly connected to the molten iron ladle 11, a rotating shaft 16 rotatably connected to the pouring nozzle 15, a guide plate 17 fixedly connected to the rotating shaft 16 for guiding the molten iron flow, an opening and closing assembly installed on the pouring nozzle 15, a tilting assembly installed on the lifting frame 13, and a buffer assembly installed on the molten iron ladle 11. The tilting assembly drives the molten iron ladle 11 to tilt around the positioning shaft 12, and when the molten iron ladle 11 tilts, the opening and closing assembly drives the rotating shaft 16 and the guide plate 17 to rotate. The molten iron ladle 11 adopts... The ladle 11 is constructed from welded steel plates and lined with refractory material. The positioning shaft 12 is a high-strength alloy steel forging that bears the weight of the entire ladle. The lifting frame 13 is a box-shaped structure with good bending strength. The first lifting ring 14 is heat-treated to ensure safe lifting. The pouring nozzle 15 is fixed to the front of the ladle 11 and communicates with the interior of the ladle, serving as the channel for the molten iron to flow out. The rotating shaft 16 passes through both sides of the pouring nozzle 15, supports the guide plate 17, and can rotate freely. When the guide plate 17 rotates with the rotating shaft 16, it can change the size of the outlet of the pouring nozzle 15 to adapt to the flow rate of the molten iron and guide the molten iron to flow out smoothly. The opening and closing assembly is used to automatically adjust the opening of the guide plate 17 according to the tilt angle of the ladle 11. The tilting assembly provides driving force to tilt the ladle 11. The buffer assembly plays a buffering role during tilting and resetting to reduce impact.

[0028] Please see Figure 1 - Figure 3 A further solution based on this embodiment is as follows: There are two rotating shafts 16, and the two rotating shafts 16 are symmetrically installed on the pouring nozzle 15. Each of the two rotating shafts 16 is fixedly connected to a guide plate 17. When the molten iron flows on the pouring nozzle 15, it pushes the guide plate 17 to unfold. The two guide plates 17 are symmetrically arranged to form a structure similar to a "fish mouth". They can open to both sides under the impact of the molten iron, so that the molten iron flow is evenly distributed and the central impact force is reduced. The symmetrical structure ensures that the force on both sides is balanced and avoids the guide plate 17 from deflecting and getting stuck.

[0029] Please see Figure 3A further embodiment of this solution is as follows: the opening and closing assembly includes a connecting plate 21 fixedly connected to the rotating shaft 16, a first spring 22 fixedly connected between the connecting plate 21 and the pouring nozzle 15, a slider 23 slidably connected to the pouring nozzle 15, a counterweight 24 fixedly connected to the slider 23, a roller seat 25 fixedly connected to the counterweight 24, and a roller body 26 rotatably connected to the roller seat 25 and rolling on the connecting plate 21. The first spring 22 provides the elastic force to reset the guide plate 17. A high-temperature heat-resistant space is left between the groove and the slider 23. The expansion gap ensures that the slider 23 can still slide freely in the groove of the pouring nozzle 15 during thermal expansion and contraction. The gravity of the counterweight 24 makes the slider 23 always tend to slide downward. When the roller body 26 rolls on the connecting plate 21, it pushes or releases the connecting plate 21, thereby controlling the rotation angle of the guide plate 17. The counterweight 24, in conjunction with the impact of molten iron, can easily open the guide plate 17, so that the opening angle of the guide plate 17 adapts to the flow rate of molten iron. The opening and closing assembly is equipped with a heat insulation protective cover, so that the opening and closing assembly can still operate normally in high temperature environment.

[0030] Please see Figure 3 A further solution based on this embodiment is as follows: the pouring nozzle 15 has a groove at the corresponding position of the slider 23. When the ladle 11 is tilted, the slider 23 slides in the groove by gravity. The cross section of the groove is T-shaped, which matches the T-shaped bottom of the slider 23 to prevent the slider 23 from falling out; ensuring that the slider 23 can slide smoothly under the action of gravity.

[0031] Please see Figure 3 A further solution based on this embodiment is as follows: the roller body 26 is made of high temperature resistant material, and when the roller body 26 rolls on the connecting plate 21, the first spring 22 is compressed or extended. The roller body 26 is made of high temperature alloy or ceramic material, which can maintain hardness in an environment above 600°C. When the roller body 26 rolls on the connecting plate 21, it pushes the connecting plate 21 to overcome the elastic force of the first spring 22 and rotate, thereby realizing the follow-up opening and closing of the guide plate 17.

[0032] Please see Figure 1 and Figure 4A further embodiment of this solution is as follows: the tilting assembly includes a positioning frame 31 fixedly connected to the lifting frame 13, a drive motor 32 fixedly connected to the positioning frame 31, a winding shaft 33 fixedly connected to the output end of the drive motor 32 and rotatably connected to the positioning frame 31, a second lifting ring 34 fixedly connected to the ladle 11, and a steel wire rope 35 fixedly connected between the second lifting ring 34 and the winding shaft 33. When the winding shaft 33 rotates, it winds up the steel wire rope 35 and pulls the second lifting ring 34 closer to the winding shaft 33. The drive motor 32 is a geared motor with a brake, which can self-lock at any position. The two ends of the winding shaft 33 are supported on the positioning frame 31 by bearings, and the rotation is smooth. The steel wire rope 35 is made of high-temperature resistant stainless steel wire and coated with grease to reduce wear. The second lifting ring 34 is welded to the rear side of the ladle 11 and forms a two-point suspension with the first lifting ring 14. The tilt angle of the ladle 11 is controlled by the winding and unwinding of the steel wire rope 35.

[0033] Please see Figure 5 and Figure 6 A further embodiment of this solution is as follows: The buffer assembly includes a first fixed plate 41 fixedly connected to the ladle 11, a second fixed plate 42 fixedly connected to the lifting frame 13, a slide rod 43 slidably connected to the second fixed plate 42, a stop plate 44 fixedly connected to the slide rod 43, and a second spring 45 fixedly connected between the stop plate 44 and the second fixed plate 42. When the slide rod 43 slides on the second fixed plate 42, the second spring 45 is compressed or extended. When the ladle 11 is reset, the first fixed plate 41 contacts and pushes the stop plate 44, causing the slide rod 43 to slide and compress the second spring 45, converting the impact kinetic energy into spring potential energy to achieve buffering. Damping can be installed at the corresponding position of the second spring 45 to absorb vibration.

[0034] Please see Figure 6 A further solution based on this embodiment is as follows: the end of the abutment plate 44 near the first fixing plate 41 is arc-shaped, and the abutment plate 44 contacts the first fixing plate 41 through the arc-shaped end. The arc-shaped design ensures that point contact or line contact can be maintained regardless of the angle at which the first fixing plate 41 contacts the abutment plate 44, thus avoiding jamming; the arc surface is hardened, has high hardness and good wear resistance, and is not prone to pitting after long-term use.

[0035] Working principle: When using this device, the lifting frame 13 is first attached to the crane hook via the first lifting ring 14. The molten iron ladle 11 is suspended below the lifting frame 13 via the positioning shaft 12. After molten iron is poured into the ladle 11, the crane lifts the device above the mold to be poured. The drive motor 32 is started, which drives the winding shaft 33 to rotate and wind up the wire rope 35. When the wire rope 35 is wound up, it pulls the second lifting ring 34, causing the molten iron ladle 11 to tilt around the positioning shaft 12 toward the pouring nozzle 15. As the tilt angle of the molten iron ladle 11 increases, molten iron flows from the pouring nozzle 15. As the ladle 11 begins to tilt, the counterweight 24, under the influence of gravity, drives the slider 23 to slide along the groove on the pouring nozzle 15, causing the roller seat 25 and roller body 26 to move synchronously. The roller body 26 rolls on the connecting plate 21, pushing the connecting plate 21 to rotate against the elastic force of the first spring 22. The connecting plate 21 drives the rotating shaft 16 to rotate, thereby causing the guide plate 17 to gradually unfold. When the molten iron flows out, it impacts the guide plate 17, further assisting it to unfold to an angle matching the flow rate, guiding the molten iron to flow out smoothly. During the pouring process, the ladle 11 continues to tilt, and the counterweight 24 ... The weight of the counterweight 24 keeps the roller body 26 pressed firmly against the connecting plate 21. The first spring 22 provides a reverse reset force, keeping the opening of the guide plate 17 in dynamic balance with the tilt angle of the ladle 11. When the flow rate is low in the initial stage of pouring, the opening of the guide plate 17 is small, guiding the molten iron to flow out in a concentrated manner. When the flow rate is high in the middle stage of pouring, the opening of the guide plate 17 is large, diverting and buffering the flow to reduce splashing. After pouring, the drive motor 32 reverses, releasing the wire rope 35. The ladle 11 slowly resets under its own weight. During the reset process, the elastic force of the first spring 22 pushes the connecting plate 21 in the reverse direction. The rotation causes the guide plate 17 to gradually close, and the roller body 26 rolls in the opposite direction on the connecting plate 21, pushing the counterweight 24 and the slider 23 to slide upward along the slide groove to reset. When the molten iron ladle 11 is reset close to the initial position, the first fixing plate 41 fixed on the molten iron ladle 11 approaches the abutment plate 44 fixed on the lifting frame 13. The first fixing plate 41 contacts the arc end of the abutment plate 44, pushing the abutment plate 44 to make the slide rod 43 slide on the second fixing plate 42, while compressing the second spring 45. The second spring 45 absorbs the impact energy when the molten iron ladle 11 is reset, making the stopping process smooth.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A splash-proof pouring device for molten iron ladle, comprising a molten iron ladle (11), a positioning shaft (12) fixedly connected to the molten iron ladle (11), a lifting frame (13) rotatably connected to the positioning shaft (12), and a first lifting ring (14) fixedly connected to the lifting frame (13) and connected to a crane, characterized in that: It also includes a pouring nozzle (15) fixedly connected to the ladle (11), a rotating shaft (16) rotatably connected to the pouring nozzle (15), a guide plate (17) fixedly connected to the rotating shaft (16) for guiding the flow of molten iron, an opening and closing assembly installed on the pouring nozzle (15), a flipping assembly installed on the lifting frame (13), and a buffer assembly installed on the ladle (11). The flipping assembly drives the ladle (11) to flip around the positioning shaft (12) as the axis, and when the ladle (11) flips, the opening and closing assembly drives the rotating shaft (16) and the guide plate (17) to rotate.

2. The anti-splashing pouring device for molten iron ladle according to claim 1, characterized in that: There are two rotating shafts (16), and the two rotating shafts (16) are symmetrically installed on the pouring nozzle (15). Each of the two rotating shafts (16) is fixedly connected to a guide plate (17). When the molten iron flows on the pouring nozzle (15), it pushes the guide plate (17) to unfold.

3. The anti-splashing pouring device for molten iron ladle according to claim 2, characterized in that: The opening and closing assembly includes a connecting plate (21) fixedly connected to the rotating shaft (16), a first spring (22) fixedly connected between the connecting plate (21) and the pouring nozzle (15), a slider (23) slidably connected to the pouring nozzle (15), a counterweight (24) fixedly connected to the slider (23), a roller seat (25) fixedly connected to the counterweight (24), and a roller body (26) rotatably connected to the roller seat (25) and rolling on the connecting plate (21).

4. The anti-splashing pouring device for molten iron ladle according to claim 3, characterized in that: The pouring nozzle (15) has a groove at the corresponding position of the slider (23). When the ladle (11) is tilted, the slider (23) slides in the groove by gravity.

5. The anti-splashing pouring device for molten iron ladle according to claim 4, characterized in that: The roller body (26) is made of high temperature resistant material, and when the roller body (26) rolls on the connecting plate (21), the first spring (22) is compressed or extended.

6. The anti-splashing pouring device for molten iron ladle according to claim 5, characterized in that: The flipping assembly includes a positioning frame (31) fixedly connected to the lifting frame (13), a drive motor (32) fixedly connected to the positioning frame (31), a winding shaft (33) fixedly connected to the output end of the drive motor (32) and rotatably connected to the positioning frame (31), a second lifting ring (34) fixedly connected to the molten iron ladle (11), and a steel wire rope (35) fixedly connected between the second lifting ring (34) and the winding shaft (33). When the winding shaft (33) rotates, it winds up the steel wire rope (35) and pulls the second lifting ring (34) closer to the winding shaft (33) through the steel wire rope (35).

7. The anti-splashing pouring device for molten iron ladle according to claim 6, characterized in that: The buffer assembly includes a first fixed plate (41) fixedly connected to the molten iron ladle (11), a second fixed plate (42) fixedly connected to the lifting frame (13), a slide rod (43) slidably connected to the second fixed plate (42), a stop plate (44) fixedly connected to the slide rod (43), and a second spring (45) fixedly connected between the stop plate (44) and the second fixed plate (42). When the slide rod (43) slides on the second fixed plate (42), the second spring (45) is compressed or extended.

8. The anti-splashing pouring device for molten iron ladle according to claim 7, characterized in that: The end of the abutment (44) near the first fixed plate (41) is arc-shaped, and the abutment (44) contacts the first fixed plate (41) through the arc-shaped end.

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