Steel ladle sand filling equipment

Abstract

The steel ladle sand filling equipment comprises a supporting structure and a fixed beam, a movable telescopic beam is arranged in the fixed beam, the telescopic beam comprises a lifting rod body which is integrally arranged, sliding rods are arranged on the two sides of the lifting rod body, and the lifting rod body can move in the fixed beam through the sliding rods; a sand filling mechanism for conveying drainage sand is arranged at the end part of the telescopic beam, a steel ladle is arranged at the bottom of the sand filling mechanism, and the drainage sand is injected into a water gap of the steel ladle through the sand filling mechanism; when the steel ladle sand filling equipment is used, sand can be vertically filled in a segmented mode, segregation of sand in a water gap is avoided, the pouring rate is guaranteed, the sand filling position and angle are convenient to adjust, the application range is large, and the steel ladle sand filling requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, and in particular to a ladle sand filling device. Background Art

[0002] Ladle sand filling (i.e. filling drainage sand) is a key step in the metallurgical continuous casting process, mainly used to ensure that molten steel flows out of the ladle nozzle smoothly and automatically; the reason is that the drainage sand is filled in the ladle nozzle, and its surface layer is quickly sintered into a thin shell at high temperature after the molten steel is injected, preventing the molten steel from penetrating into the nozzle and causing solidification blockage; when pouring begins, the unsintered sand body falls freely due to gravity, and at the same time, the static pressure of the molten steel breaks the sintered layer to achieve automatic drainage; and the sand filling process is usually carried out using equipment to ensure the quality of sand filling.

[0003] Publication number CN117884614A discloses a ladle sand filling device, including a supporting platform, an extended protection unit is arranged on the outer surface of the supporting platform, the extended protection unit includes a protective fence and an extended platform, a sand and gravel overlapping sliding unit is fixedly installed on the inner surface of the protective fence, the sand and gravel overlapping sliding unit includes a limiting sliding track, and an anti-slip overlapping discharge unit is slidably overlapped on the outer surface of the limiting sliding track; the technical problem of molten steel splashing caused by sand leakage is solved.

[0004] However, the sand filling pipe in the above-mentioned sand filling device is a vertically arranged through pipe. When the sand falls freely inside, it is easy to segregate or bridge in the nozzle, which affects the pouring rate. In addition, the device as a whole cannot be adjusted according to the position or angle of the nozzle during sand filling, and the use effect is not ideal. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a ladle sand filling equipment which can vertically fill sand in sections to avoid sand segregation in the water nozzle, ensure the pouring rate, and the sand filling position and angle are easy to adjust, has a wide range of applications, and meets the needs of ladle sand filling.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a ladle sand filling equipment, comprising a supporting structure and a fixed beam, a movable telescopic beam is arranged in the fixed beam, the telescopic beam comprises an integrally arranged lifting rod body, sliding rods are arranged on both sides of the lifting rod body, the lifting rod body can move in the fixed beam through the sliding rods, a sand filling mechanism for conveying drainage sand is arranged at the end of the telescopic beam, a ladle is arranged at the bottom of the sand filling mechanism, and the drainage sand is injected into the water inlet of the ladle through the sand filling mechanism.

[0007] Preferably, a groove is provided on the surface of the fixed beam, a gear roller is provided above the groove, a rack matching with the gear roller is provided on the surface of the lifting rod body, the gear roller is connected to the motor through a belt and a pulley, and after the motor is running, the telescopic beam is driven to move telescopically through the cooperation between the gear roller and the rack.

[0008] Preferably, the support structure includes a base, a rotatable rotating rod is provided on the base, a lifting rod is provided inside the rotating rod, the fixed beam is fixed to the top of the lifting rod, and the sand filling mechanism adjusts the sand filling position through the rotating rod and the lifting rod.

[0009] Preferably, the sand filling mechanism includes a first sand filling pipe, a second sand filling pipe and a third sand filling pipe. A conical hopper is provided at the top of the first sand filling pipe. A first receiving box is provided between the first sand filling pipe and the second sand filling pipe. A second receiving box is provided between the second sand filling pipe and the third sand filling pipe. The first sand filling pipe and the third sand filling pipe are on the same axis, and the second sand filling pipe and the third sand filling pipe are diagonally arranged on the second receiving box.

[0010] Preferably, the feed inlet of the first receiving box corresponds to the discharge outlet of the second receiving box vertically, and the discharge outlet of the second receiving box corresponds to the feed inlet of the second receiving box vertically.

[0011] Preferably, air permeable grooves are provided on the surfaces of the first receiving box and the second receiving box. A first drainage plate and a second drainage plate are provided inside the first receiving box and the second receiving box. The first drainage plate and the second drainage plate are both inclined and fixed inside the receiving box.

[0012] Preferably, a bearing seat is provided inside the telescopic beam. The first sand filling pipe passes through the telescopic beam in the bearing seat and extends upward. A toothed disc is fixed to the outer wall of the first sand filling pipe. A semi-circular toothed disc meshing with the toothed disc is provided on the surface of the telescopic beam. A motor cover is provided at the bottom of the telescopic beam. An in-built motor is provided inside the motor cover. After the in-built motor operates, the first sand filling pipe is driven to rotate intermittently through the semi-circular toothed disc.

[0013] Preferably, a limiting ring is provided at the bottom end of the third sand filling pipe. An arc-shaped cover is provided between the limiting ring and the second receiving box. The arc-shaped cover is movably sleeved on the outer circumference of the third sand filling pipe. The outer diameter of the limiting ring is smaller than the inner diameter of the water outlet.

[0014] Preferably, an eccentric sand filling cone head is provided inside the bottom end of the third sand filling pipe. The outer wall of the sand filling cone head is fixed to the inner wall of the third sand filling pipe. A first sand outlet is provided at the bottom of the sand filling cone head.

[0015] Preferably, a plurality of second sand outlets are further provided on the inclined surface of the sand filling cone head.

[0016] A ladle sand filling device disclosed by the present invention includes a support structure and a fixed beam. A movable telescopic beam is arranged inside the fixed beam. The telescopic beam includes a lifting rod body integrally arranged. Slide rods are arranged on both sides of the lifting rod body. The lifting rod body can move inside the fixed beam through the slide rods. A sand filling mechanism for conveying and draining sand is arranged at the end of the telescopic beam. A ladle is arranged at the bottom of the sand filling mechanism. The drained sand is injected into the nozzle of the ladle through the sand filling mechanism. Compared with the prior art, when the ladle sand filling device is in use, it has the beneficial effects of being able to perform segmented vertical sand filling, avoiding segregation of sand in the nozzle, ensuring the tapping success rate, and having the sand filling position and angle easy to adjust, large application range, and meeting the ladle sand filling requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a ladle sand filling device of the present invention Figure 1 。

[0018] Figure 2 is a schematic structural diagram of a ladle sand filling device of the present invention Figure 2 。

[0019] Figure 3 is a schematic connection diagram of the telescopic beam and the fixed beam in a ladle sand filling device of the present invention.

[0020] Figure 4 is of the present invention Figure 1 is an enlarged structural schematic diagram of part A in

[0021] Figure 5 is a schematic structural diagram of the sand filling mechanism in a ladle sand filling device of the present invention.

[0022] Figure 6 is an internal structural schematic diagram of the sand filling mechanism in a ladle sand filling device of the present invention.

[0023] Figure 7 is a schematic connection diagram of the third sand filling pipe and the sand filling cone head in a ladle sand filling device of the present invention.

[0024] Figure 8 is a schematic diagram of the drained sand during pouring in a ladle sand filling device of the present invention.

[0025] Figure 9 is a schematic diagram of the ladle sand filling device of the present invention after sand filling is completed.

[0026] In the figure: 1, base; 2, rotating rod body; 3, lifting rod body; 4, fixed beam; 41, slot; 42, motor; 43, pulley; 44, gear roller; 45, belt; 5, telescopic beam; 51, bearing seat; 52, tooth disc; 53, semi-circular tooth disc; 54, motor cover; 6, lifting rod body; 61, sliding rod; 62, rack; 7, sand filling mechanism; 71, first sand filling pipe; 711, conical hopper; 72, first receiving box; 721, air permeable slot; 722, first drainage plate; 723, second drainage plate; 73, second sand filling pipe; 74, second receiving box; 75, third sand filling pipe; 76, arc cover; 77, limiting ring; 78, sand filling cone head; 781, first sand outlet; 782, second sand outlet; 8, ladle; 81, nozzle. Detailed implementation mode

[0027] Now, the present invention will be further described in detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0028] Please refer to Figures 1-9 , a ladle sand filling device, including a support structure and a fixed beam 4. A movable telescopic beam 5 is arranged in the fixed beam 4. The telescopic beam 5 includes a lifting rod body 6 integrally arranged. Sliding rods 61 are arranged on both sides of the lifting rod body 6. The lifting rod body 6 can move in the fixed beam 4 through the sliding rods 61. A sand filling mechanism 7 for conveying and draining sand is arranged at the end of the telescopic beam 5. A ladle 8 is arranged at the bottom of the sand filling mechanism 7. The drained sand is injected into the nozzle 81 of the ladle 8 through the sand filling mechanism 7.

[0029] After the telescopic beam 5 moves in the fixed beam 4, the extending length of the sand filling mechanism 7 can be adjusted to facilitate the adjustment of the sand filling position. Before tapping, the bottom of the sand filling mechanism 7 is made to face the nozzle 81 of the ladle 8. After the sand is poured into the sand filling mechanism, the drained sand enters the nozzle 81 along with the sand filling mechanism, thereby filling the nozzle. During tapping, the molten steel is transferred from the converter to the ladle 8. The upper surface of the drained sand contacts the high-temperature molten steel and quickly forms a sintered layer, which can prevent the molten steel from entering the nozzle seat and the upper nozzle to form solidified steel, and can effectively prevent the drained sand from being sucked into the molten steel by the turbulence and causing pollution.

[0030] When the molten steel is ready to be poured onto the continuous casting platform, the operator opens the ladle slide plate. The drained sand that has not been burned out flows out of the ladle 8 due to its own weight through the upper and lower nozzles. The drained sand in the sintered layer ruptures and slides under the action of static pressure and its own gravity, so that the ladle 8 is automatically filled.

[0031] In this embodiment, the surface of the fixed beam 4 is provided with a cavity 41. Above the cavity 41, there is a gear roller 44. The surface of the lifting rod body 6 is provided with a rack 62 that cooperates with the gear roller 44. The gear roller 44 is drivingly connected to the motor 42 through a belt 45 and a pulley 43. After the motor 42 operates, the telescopic beam 5 is driven to telescopically move through the cooperation of the gear roller 44 and the rack 62. When the telescopic beam 5 moves, the lifting rod body 6 moves through the sliding rod along the inner wall of the fixed beam 4, ensuring smooth overall operation and smooth sand filling.

[0032] In addition, the support structure includes a base 1. The base 1 is provided with a driving motor (not shown in the figure). A rotatable rotating rod body 2 is provided on the base 1. The bottom end of the rotating rod body 2 is fixedly connected to the output shaft of the driving motor through a turntable. When the driving motor operates, it drives the rotating rod body 2 to rotate to adjust the sand filling position. A lifting rod body 3 is provided inside the rotating rod body 2. A hydraulic mechanism (not shown in the figure) is provided inside the rotating rod body 2. After the hydraulic mechanism operates, the height of the lifting rod body 3 can be raised and lowered, thereby driving the fixed beam 4 and the sand filling mechanism 7 to rise and fall, so that the sand filling mechanism 7 enters or disengages from the ladle 8. The fixed beam 4 is fixed to the top of the lifting rod body 3. The sand filling mechanism 7 adjusts the sand filling position through the rotating rod body 2 and the lifting rod body 3, so as to meet the sand filling of ladles at different positions and different depths.

[0033] Please refer to again Figure 5 Specifically, the sand filling mechanism 7 includes a first sand filling pipe 71, a second sand filling pipe 73, and a third sand filling pipe 75. A conical hopper 711 is provided at the top of the first sand filling pipe 71. During sand filling, the bagged guiding sand is first poured into the conical hopper 711. A first receiving box 72 is provided between the first sand filling pipe 71 and the second sand filling pipe 73. A second receiving box 74 is provided between the second sand filling pipe 73 and the third sand filling pipe 75. The first sand filling pipe 71 and the third sand filling pipe 75 are located on the same axis. The second sand filling pipe 73 and the third sand filling pipe 75 are arranged diagonally on the second receiving box 74.

[0034] In this embodiment, the first sand filling pipe 71, the second sand filling pipe 73, the third sand filling pipe 75, the first receiving box 72, and the second receiving box 74 are all made of stainless steel and are integrally formed by welding; when the guiding sand enters the conical hopper 711, the guiding sand will pass through the first sand filling pipe 71, the first receiving box 72, the second sand filling pipe 73, the second receiving box 74, and the third sand filling pipe 75 in sequence and be poured into the nozzle 81 of the ladle.

[0035] Since the first sand filling pipe 71 and the third sand filling pipe 75 are located on the same axis, and the second sand filling pipe 73 is arranged diagonally at the second receiving box 74; therefore, the guiding sand will change its pouring trajectory when pouring and falling.

[0036] Due to the different particle sizes of the drainage sand, when the air resistance and its own mass are different, vertical free pouring will result in different pouring speeds, which will cause different degrees of segregation of the drainage sand, resulting in uneven pouring of the drainage sand and the presence of air inside, affecting the tapping rate of molten steel; when pouring sand through the sand pouring mechanism 7, the first receiving box 72 and the second receiving box 74 can make the drainage sand fall in segments, which can avoid the blockage or bridging of sand materials in the pipeline on the one hand, and on the other hand, can make the sand pouring more uniform, improve the density, and avoid affecting the tapping rate of molten steel.

[0037] The feed inlet of the first receiving box 72 corresponds to the discharge outlet of the second receiving box 74 up and down, and the discharge outlet of the second receiving box 74 corresponds to the feed inlet of the first receiving box 72 up and down; that is to say, the first receiving box 72 and the second receiving box 74 correspond to each other up and down, but the positions of the feed and discharge are respectively set at the diagonal corners, so as to realize the free fall of the drainage sand in segments.

[0038] Please refer to again Figure 6 , in this embodiment, the surfaces of the first receiving box 72 and the second receiving box 74 are both provided with air permeable grooves 721, and the internal air can overflow from the air permeable grooves 721 when injecting the drainage sand. The first receiving box 72 and the second receiving box 74 are both provided with a first drainage plate 722 and a second drainage plate 723, and the first drainage plate 722 and the second drainage plate 723 are both inclined and fixed inside the receiving box.

[0039] One side of the first drainage plate 722 and the second drainage plate 723 is welded and fixed, and the edges are both fixed to the inner wall of the corresponding receiving box.

[0040] The feed inlets of the (first and second) receiving boxes are both located directly above the connection of the first drainage plate 722 and the second drainage plate 723. At this time, when the drainage sand falls into the receiving box, it first contacts the first drainage plate 722 and the second drainage plate 723, and then enters the feeding port along the surface track of the first drainage plate 722 and the second drainage plate 723 to enter the next sand pouring pipe. In this way, the segmented free fall can effectively avoid the segregation of the drainage sand.

[0041] The bottom end of the third sand pouring pipe 75 is internally provided with a sand pouring cone head 78 arranged eccentrically.

[0042] Furthermore, a bearing seat 51 is arranged inside the telescopic beam 5. The first sand pouring pipe 71 passes through the telescopic beam 5 in the bearing seat 51 and extends upward. A toothed disc 52 is fixed on the outer wall of the first sand pouring pipe 71. A semi-circular toothed disc 53 meshing with the toothed disc 52 is arranged on the surface of the telescopic beam 5 (the meshing teeth are only arranged at the semi-circular circumference of the semi-circular toothed disc 53). A motor cover 54 is arranged at the bottom of the telescopic beam 5. An internal motor is arranged inside the motor cover 54. After the internal motor runs, it drives the first sand pouring pipe 71 to rotate intermittently through the semi-circular toothed disc 53.

[0043] That is to say, after the built-in motor in the motor cover 54 runs, it first drives the semi-circular gear disk 53 to rotate. When the meshing teeth on the circumference of the semi-circular gear disk 53 mesh with the gear disk 52, it will drive the first sand filling pipe 71 (the whole grouting mechanism) to rotate. When the meshing teeth on the circumference of the semi-circular gear disk 53 disengage from the gear disk 52, the first sand filling pipe 71 remains stationary. In this way, the first sand filling pipe 71 can drive the whole to rotate intermittently; the intermittent rotation of the whole can make the third sand filling pipe 75 stationary for a certain period of time to avoid continuous rotation. During this stationary period, sand can be continuously filled directly below. As the whole rotates intermittently, sand can be continuously filled at different positions, improving the density of the drainage sand.

[0044] As a preferred solution, a limit ring 77 is provided at the bottom end of the third sand filling pipe 75. An arc-shaped cover 76 is provided between the limit ring 77 and the second receiving box 74. The arc-shaped cover 76 is movably sleeved on the outer circumference of the third sand filling pipe 75. The outer diameter of the limit ring 77 is smaller than the inner diameter of the water inlet 81; during use, the limit ring 77 and the eccentrically arranged sand filling cone head 78 extend into the water inlet 81, and at the same time, the arc-shaped cover 76 covers the upper part of the water inlet 81. At this time, the intermittent rotation of the sand filling mechanism 7 can gradually fill the circumference of the water inlet with drainage sand.

[0045] In this embodiment, during the sand filling process, the built-in motor in the motor cover 54 and the hydraulic mechanism in the rotating rod body 2 operate synchronously to ensure the intermittent rotation and gradual upward movement of the sand filling mechanism 7.

[0046] That is to say, the intermittent rotation of the sand filling mechanism 7 first fills the drainage sand around the water inlet. As the whole rises, sand can be filled at different heights in the water inlet; when the whole rises, the arc-shaped cover 76 always covers the upper part of the water inlet until the limit ring 77 lifts the arc-shaped cover 76.

[0047] Please refer to again Figure 9 , after the sand filling is completed, due to the setting of the arc-shaped cover 76, the sand material will form a bun-shaped protrusion to increase the surface area of the sintered layer; at the same time, the intermittent rotation and upward movement of the sand filling mechanism 7 can make the drainage sand material fall along the edge of the water inlet, avoiding segregation.

[0048] As a preferred solution, the outer wall of the sand filling cone head 78 is fixed to the inner wall of the third sand filling pipe 75. A first sand outlet 781 is provided at the bottom of the sand filling cone head 78. In addition, a plurality of second sand outlets 782 are also provided on the inclined surface of the sand filling cone head 78.

[0049] When the drainage sand enters the sand filling cone head 78, the sand material can be filled into the circumference of the water inlet from the first sand outlet 781, and at the same time, it can also be filled into the inside of the water inlet at the second sand outlets 782; therefore, the sand material can fall from multiple sand outlets to different positions, further avoiding the segregation of the sand material. At the same time, as the whole rotates intermittently, it can also effectively fill the water inlet, avoiding the existence of air due to bridging inside.

[0050] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A ladle sand filling device, comprising a support structure and a fixed beam, characterized in that, A movable telescopic beam is provided in the fixed beam, and the telescopic beam includes an integral lifting rod body, and sliding rods are provided on both sides of the lifting rod body. The lifting rod body can move in the fixed beam through the sliding rods, and a sand filling mechanism for conveying drainage sand is provided at the end of the telescopic beam. A ladle is provided at the bottom of the sand filling mechanism, and the drainage sand is injected into the water inlet of the ladle through the sand filling mechanism.

2. The ladle sand filling equipment according to claim 1, characterized in that, A groove is provided on the surface of the fixed beam, a gear roller is provided above the groove, a rack matched with the gear roller is provided on the surface of the lifting rod body, the gear roller is connected to the motor through a belt and a pulley, and after the motor is running, the telescopic beam is driven to move telescopically through the cooperation between the gear roller and the rack.

3. The ladle sand filling equipment according to claim 1 or 2, characterized in that, The supporting structure comprises a base, a rotatable rotating rod body is arranged on the base, a lifting rod body is arranged in the rotating rod body, the fixed beam is fixed on the top of the lifting rod body, and the sand filling mechanism adjusts the sand filling position through the rotating rod body and the lifting rod body.

4. The ladle sand filling equipment according to claim 1, characterized in that, The sand filling mechanism comprises a first sand filling pipe, a second sand filling pipe and a third sand filling pipe. A conical hopper is provided on the top of the first sand filling pipe, a first receiving box is provided between the first sand filling pipe and the second sand filling pipe, a second receiving box is provided between the second sand filling pipe and the third sand filling pipe, the first sand filling pipe and the third sand filling pipe are located on the same axis, and the second sand filling pipe and the third sand filling pipe are diagonally arranged on the second receiving box.

5. The ladle sand filling equipment according to claim 4, characterized in that, The feed port of the first receiving box corresponds to the discharge port of the second receiving box in vertical correspondence, and the discharge port of the second receiving box corresponds to the feed port of the second receiving box in vertical correspondence.

6. The ladle sand filling device according to claim 4 or 5, characterized in that The surfaces of the first receiving box and the second receiving box are both provided with ventilation grooves, and the first receiving box and the second receiving box are both provided with first guide plates and second guide plates, and the first guide plates and the second guide plates are both inclinedly arranged and fixed inside the receiving box.

7. The ladle sand filling equipment according to claim 4, characterized in that, A bearing seat is provided in the telescopic beam, the first sand filling pipe passes through the telescopic beam in the bearing seat and extends upward, a toothed disc is fixed to the outer wall of the first sand filling pipe, a semicircular toothed disc meshing with the toothed disc is provided on the surface of the telescopic beam, a motor cover is provided at the bottom of the telescopic beam, a built-in motor is provided in the motor cover, and after the built-in motor is running, the first sand filling pipe is driven to rotate intermittently through the semicircular toothed disc.

8. The ladle sand filling equipment according to claim 4, characterized in that, A limiting ring is provided at the bottom end of the third sand filling pipe, an arc cover is provided between the limiting ring and the second receiving box, the arc cover is movably sleeved on the outer circumference of the third sand filling pipe, and the outer diameter of the limiting ring is smaller than the inner diameter of the water inlet.

9. The ladle sand filling equipment according to claim 8, characterized in that, An eccentrically arranged sand filling cone head is arranged in the bottom end of the third sand filling pipe, the outer wall of the sand filling cone head is fixed to the inner wall of the third sand filling pipe, and a first sand outlet is arranged at the bottom of the sand filling cone head.

10. The ladle sand filling equipment according to claim 9, characterized in that, The inclined surface of the sand filling cone head is also provided with a plurality of second sand outlets.

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