A protective slag feeding device and method suitable for a crystallizer

Abstract

A kind of mould is suitable for casting powder feeding device and method of protecting slag, including nozzle feeding part and side feeding part;The nozzle feeding part and side feeding part are all set on the mould platform of nozzle front side;The number of the side feeding part is two, and it is symmetrically arranged on the two sides of nozzle feeding part;The nozzle feeding part includes sliding mechanism, feeding mechanism and merging mechanism;The sliding mechanism is set on the mould platform, and it is located in front of nozzle;The feeding mechanism and merging mechanism are all set on sliding mechanism.The present application will evenly distribute in the mould of protecting slag and reduce the labor intensity of staff, improve the distribution efficiency and uniformity.

Description

Technical Field

[0001] This invention relates to a protective slag feeding device and method suitable for crystallizers, and more particularly to a protective slag feeding device and method suitable for continuous casting machine crystallizers, belonging to the technical field of protective slag feeding equipment for continuous casting machine crystallizers. Background Technology

[0002] In the continuous casting machine's crystallizer production process, protective slag needs to be added to the surface of the molten steel. This slag protects the molten steel from secondary oxidation by air, provides excellent heat insulation, and absorbs and dissolves inclusions in the molten steel, purifying it. Currently, there are two methods for adding slag: manual and robotic arm. Manual slag addition has drawbacks: workers have to move bags containing protective slag to the slag addition holes in the crystallizer, resulting in extremely high labor intensity and posing a safety hazard. Furthermore, manual slag addition occurs at a single point in the slag addition hole, leading to uneven distribution. Robotic arm slag addition suffers from low uniformity because the arm, holding a slag discharge pipe, moves back and forth across the slag addition holes. The arm can only distribute slag to the slag addition holes on either side of the nozzle, not around the nozzle's perimeter. Therefore, a device and method are needed to ensure uniform distribution of protective slag in the crystallizer's slag addition holes. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a protective slag feeding device and method suitable for crystallizers. It can not only reduce the labor intensity of workers, but also improve the uniformity of protective slag distribution in crystallizers.

[0004] The problem described in this invention is solved by the following technical solution:

[0005] A protective slag feeding device suitable for a crystallizer includes a sprue feeding section and a side feeding section; both the sprue feeding section and the side feeding section are located on the crystallizer platform in front of the sprue; there are two side feeding sections, which are symmetrically arranged on both sides of the sprue feeding section; the sprue feeding section includes a sliding mechanism, a feeding mechanism, and a merging mechanism; the sliding mechanism is located on the crystallizer platform and is located directly in front of the sprue; the feeding mechanism and the merging mechanism are both mounted on the sliding mechanism.

[0006] The aforementioned protective slag feeding device for crystallizers includes a sliding mechanism comprising a first slide rail and a sliding base. The first slide rail is disposed on the crystallizer platform and is located directly in front of the water inlet. The sliding base is slidably disposed on the first slide rail. The merging mechanism includes a first motor, a second slide rail, a first sliding member, a second sliding member, a first material feeding member, and a second material feeding member. The second slide rail is disposed on the upper surface of the sliding base, and the centerline of the second slide rail is perpendicular to the centerline of the first slide rail. The housing of the first motor is disposed on the upper surface of the sliding base, and the first motor is located on one side of the second slide rail. The first sliding member and the second sliding member have the same structure and are both disposed on the second slide rail. The first material feeding member is disposed on the first sliding member, and the second material feeding member is disposed on the second sliding member.

[0007] The above-mentioned protective slag feeding device for crystallizers has the following configuration: the output shaft of the first motor is connected to one end of a lead screw, and the other end of the lead screw is connected to the vertical plate on the upper surface of the sliding base. The axis of the lead screw is parallel to the center line of the second slide rail. The first sliding component includes a slider, a lead screw nut, and a connecting bracket. The slider is slidably mounted on the second slide rail, the lead screw nut is mounted on the slider, and the lead screw passes through the lead screw nut. The lead screw nut in the first sliding component and the lead screw nut in the second sliding component are arranged in opposite directions. The first end of the connecting bracket is connected to the slider.

[0008] The above-mentioned protective slag feeding device for crystallizers includes a first feeding component comprising a first semi-conical outer shell, a first semi-cylindrical inner shell, a first arc-shaped top plate, and a first arc-shaped bottom plate. The first arc-shaped top plate is located at the top of the first semi-conical outer shell and the first semi-cylindrical inner shell, and the first arc-shaped bottom plate is located at the bottom of the first semi-conical outer shell and the first semi-cylindrical inner shell. The first semi-conical outer shell, the first semi-cylindrical inner shell, the first arc-shaped top plate, and the first arc-shaped bottom plate together form an arc-shaped cavity with open ends. The first arc-shaped bottom plate is uniformly provided with multiple through holes along the arc direction. The diameter of the top end of the first semi-conical outer shell is larger than the diameter of its bottom end. A feed inlet is provided at the top of the side wall of the first semi-conical outer shell. The second end of the connecting bracket inside the first sliding component is connected to the outer wall of the first semi-conical outer shell.

[0009] The above-mentioned protective slag feeding device for crystallizers includes a second feeding component comprising a second semi-conical outer shell, a second semi-cylindrical inner shell, a second arc-shaped top plate, and a second arc-shaped bottom plate. The second arc-shaped top plate is located at the top of the second semi-conical outer shell and the second semi-cylindrical inner shell, and the second arc-shaped bottom plate is located at the bottom of the second semi-conical outer shell and the second semi-cylindrical inner shell. The second semi-conical outer shell, the second semi-cylindrical inner shell, the second arc-shaped top plate, and the second arc-shaped bottom plate together form an arc-shaped cavity with open ends, and the through holes at both ends of the first feeding component and the through holes at both ends of the second feeding component are matched and connected. The diameter of the cylindrical body after the first semi-cylindrical inner shell and the second semi-cylindrical inner shell are attached is larger than the diameter of the nozzle. The second arc-shaped bottom plate is uniformly provided with multiple through holes along the arc direction. The top diameter of the second semi-conical outer shell is larger than its bottom diameter. A vertically penetrating air outlet is provided on the second arc-shaped top plate, and a filter screen is provided at the bottom of the air outlet. The second end of the connecting bracket inside the second sliding component is connected to the outer wall of the second semi-conical outer shell.

[0010] The above-mentioned protective slag feeding device for crystallizers includes a feeding mechanism comprising a square frame, a hopper, a weighing sensor, a discharge valve, a first storage hopper, a telescopic pipe, a conveying pipe, a gas cylinder, and a pneumatic conveying valve. The square frame is mounted on the upper surface of the sliding base via a column. The hopper passes through the central square hole of the square frame. A weighing sensor is mounted on the upper surface of the square frame, and a horizontal plate on the side wall of the hopper presses against the weighing sensor. A display screen is mounted on the square frame, and the signal from the weighing sensor is output to the display screen. A discharge valve is mounted at the bottom outlet of the hopper. The first storage hopper is mounted on the column and is located directly below the hopper. A pneumatic conveying valve is mounted at the bottom of the first storage hopper, and the outlet of the pneumatic conveying valve is connected to the first end of the telescopic pipe. The gas cylinder is mounted on the upper surface of the sliding base, and the outlet of the gas cylinder is connected to the pneumatic conveying valve via a connecting pipe. The second end of the telescopic pipe is connected to the first end of the conveying pipe, and the second end of the conveying pipe is fixedly connected to the inlet on the side wall of the first semi-conical outer shell.

[0011] The above-mentioned protective slag feeding device for crystallizers includes a side feeding part comprising a rotating mechanism, a second storage hopper, and an opening and closing mechanism; the rotating mechanism is disposed on the crystallizer platform and is located on one side of the first slide rail; the second storage hopper is disposed on the rotating mechanism, and the opening and closing mechanism is disposed on the second storage hopper.

[0012] The above-mentioned protective slag feeding device for crystallizers includes a rotating mechanism comprising a rotating column, an annular handle, and a horizontal connecting frame; the bottom end of the rotating column is axially connected to the crystallizer platform; the annular handle is located at the top of the rotating column; the horizontal connecting frame is located on the side wall of the rotating column, and one end of the horizontal connecting frame is connected to the outer wall of the second storage hopper.

[0013] The above-mentioned protective slag feeding device for crystallizers includes an opening and closing mechanism comprising a fixed inclined plate, a flap, a rotating shaft, a driven gear, a driving gear, a gear chain, and a second motor. A fixed inclined plate is provided on one side of the bottom end of the second storage hopper, and the flap is provided on the other side of the bottom end of the second storage hopper via a rotating shaft. One end of the rotating shaft passes through the side wall of the second storage hopper, and a driven gear is provided at the end of the rotating shaft. The housing of the second motor is provided on a horizontal connecting frame, and a driving gear is provided on the output shaft of the second motor. The driving gear and the driven gear are connected by a gear chain meshing.

[0014] A method for adding protective slag to a crystallizer includes the following steps:

[0015] In the initial state, the sliding base is located at the end away from the water inlet; the two sliders are far apart from each other, and the first and second feeding parts do not contact each other; both second storage hoppers are located far away from the slag inlet of the crystallizer; the fixed inclined plate and the flap at the bottom of the second storage hopper contact and close the outlet of the second storage hopper;

[0016] Step 1: When protective slag needs to be added, the amount of protective slag to be added at one time is divided into three parts. One part of the protective slag is transported to the first storage hopper through the silo. The amount of material from the silo to the first storage hopper is controlled by the weighing sensor. The other two parts of the protective slag are added to the second storage hoppers on both sides respectively.

[0017] Step 2: Push the sliding base to move until the water inlet is between the first and second semi-cylindrical inner shells. Then start the first motor, and the two sliders move in opposite directions and move closer to each other until the first and second semi-cylindrical inner shells merge to form a closed cavity. Then start the gas cylinder switch and the pneumatic delivery valve to deliver the protective slag into the first semi-conical outer shell through airflow. The protective slag falls in a vortex inside until it falls onto the first and second arc-shaped bottom plates, and then falls into the crystallizer through the through hole at the bottom. Part of the airflow is discharged through the air outlet on the second arc-shaped top plate. The protective slag falls in a way that surrounds the water inlet, and evenly covers the area around the water inlet.

[0018] Step 3: While performing Step 2, rotate the ring handle and rotate the rotating column to move the second storage hopper directly above the slag addition hole of the crystallizer; after both second storage hoppers on both sides are in position, start the second motor. The second motor drives the gear chain to rotate through the drive gear, and the gear chain drives the rotating shaft on the flip plate to rotate, finally causing the flip plate to flip, thereby opening the channel between the flip plate and the fixed inclined plate. The protective slag falls through the gap between the flip plate and the fixed inclined plate. The feeding rate is controlled by controlling the flip angle of the flip plate.

[0019] Step 4: After the protective slag in the first and second storage hoppers has been added, the second motor drives the flap to flip and contact the fixed inclined plate to close the outlet of the second storage hopper. Turn the ring handle to move the second storage hopper away from the water outlet. Then close the gas cylinder switch and the pneumatic conveying valve. The first motor reverses and drives the two sliders to move away from each other, thereby separating the first and second material feeding components. Finally, pull the sliding base to move the first and second material feeding components away from the water outlet. The crystallizer protective slag addition operation is now complete.

[0020] This invention uses a sliding mechanism to move the feeding mechanism and the merging mechanism closer to or further away from the water inlet. The feeding mechanism can provide protective slag for the merging mechanism; the merging mechanism can merge and surround the water inlet and distribute the material evenly around the water inlet, thus fully covering the area around the water inlet; the side feeding part can perform comprehensive feeding operations on the crystallizer slag feeding ports on both sides of the water inlet, which is more uniform than the single-point feeding method. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the sprue feeding section of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the side feeding part of the present invention from a downward angle;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the side feeding section of the present invention at an elevation angle;

[0025] Figure 5 This is a three-dimensional structural diagram of the first fabric component of the present invention.

[0026] The following are the labels in the diagram: 1. Water inlet, 2. Crystallizer slag inlet, 3. First slide rail, 4. Sliding base, 5. First motor, 6. Second slide rail, 7. Slider, 8. First semi-conical outer shell, 9. First semi-cylindrical inner shell, 10. First arc-shaped top plate, 11. First arc-shaped bottom plate, 12. Second material distribution component, 13. Hopper, 14. Weighing sensor, 15. First storage hopper, 16. Conveying pipe, 17. Gas cylinder, 18. Second storage hopper, 19. Rotating column, 20. Fixed inclined plate, 21. Flip plate, 22. Toothed chain, 23. Second motor. Implementation

[0027] See Figure 1 , 2 3, 4 and Figure 5The present invention includes a sprue feeding section and a side feeding section; the sprue feeding section is for uniformly distributing material around the sprue 1; both the sprue feeding section and the side feeding section are set on the crystallizer platform in front of the sprue 1; there are two side feeding sections, which are symmetrically arranged on both sides of the sprue feeding section; the crystallizer slag addition hole 2 is elongated, and the sprue 1 is located at the center of the crystallizer slag addition hole 2; the side feeding section is for feeding material into the part of the crystallizer slag addition hole 2 that is not outside the sprue 1; the sprue feeding section includes a sliding mechanism, a feeding mechanism, and a merging mechanism; the sliding mechanism can drive the feeding mechanism and the merging mechanism to move closer to or away from the sprue 1; the feeding mechanism provides protective slag to the merging mechanism; the merging mechanism can distribute material within the circumferential area of ​​the sprue 1; the sliding mechanism is set on the crystallizer platform and is located directly in front of the sprue 1; the feeding mechanism and the merging mechanism are both set on the sliding mechanism.

[0028] The sliding mechanism includes a first slide rail 3 and a sliding base 4; the first slide rail 3 is disposed on the crystallizer platform and is located directly in front of the water inlet 1; the sliding base 4 is slidably disposed on the first slide rail 3; the sliding base 4 can slide along the line on the first slide rail 3.

[0029] The merging mechanism includes a first motor 5, a second slide rail 6, a first sliding member, a second sliding member, a first fabric member, and a second fabric member 12; the second slide rail 6 is disposed on the upper end face of the sliding base 4, and the center line of the second slide rail 6 is perpendicular to the center line of the first slide rail 3; the housing of the first motor 5 is disposed on the upper end face of the sliding base 4, and the first motor 5 is located on one side of the second slide rail 6; the first sliding member and the second sliding member have the same structure, and both are disposed on the second slide rail 6; both the first sliding member and the second sliding member slide on the second slide rail 6; the first fabric member is disposed on the first sliding member, and the second fabric member 12 is disposed on the second sliding member.

[0030] The output shaft of the first motor 5 is connected to one end of a lead screw, and the other end of the lead screw is connected to the vertical plate on the upper surface of the sliding base 4. The axis of the lead screw is parallel to the center line of the second slide rail 6. The first sliding member includes a slider 7, a lead screw nut, and a connecting bracket. The slider 7 is slidably mounted on the second slide rail 6, and the lead screw nut is mounted on the slider 7. The lead screw passes through the lead screw nut. The first motor 5 drives the lead screw to rotate, which in turn drives the lead screw nut to move along the lead screw, and the lead screw nut drives the slider 7 to move. The lead screw nut in the first sliding member and the lead screw nut in the second sliding member are arranged in opposite directions. This means that when the first motor 5 rotates, the two lead screw nuts move in opposite directions, moving closer or further away from each other, thereby controlling the slider 7 corresponding to the lead screw nut to move closer or further away. The first end of the connecting bracket is connected to the slider 7.

[0031] The first fabric component includes a first semi-conical outer shell 8, a first semi-cylindrical inner shell 9, a first arc-shaped top plate 10, and a first arc-shaped bottom plate 11. The first arc-shaped top plate 10 is located at the top of the first semi-conical outer shell 8 and the first semi-cylindrical inner shell 9, and the first arc-shaped bottom plate 11 is located at the bottom of the first semi-conical outer shell 8 and the first semi-cylindrical inner shell 9. The first semi-conical outer shell 8, the first semi-cylindrical inner shell 9, the first arc-shaped top plate 10, and the first arc-shaped bottom plate 11 together form an arc-shaped cavity that is open at both ends. The two arc-shaped cavities combined together form a closed conical cavity. The first arc-shaped bottom plate 11 is located along the arc direction. Multiple through holes are evenly arranged to allow protective slag to fall; the top diameter of the first semi-conical shell 8 is larger than its bottom diameter; a feed inlet is provided at the top of the side wall of the first semi-conical shell 8; the protective slag is tangentially blown into the first material distribution member through the feed inlet of the side wall of the first semi-conical shell 8, and falls onto the arc-shaped bottom plate in a vortex trajectory within the combination of the first and second material distribution members, and then falls into the crystallizer through the through holes; the second end of the connecting bracket in the first sliding member is connected to the outer wall of the first semi-conical shell 8; the movement of the slider drives the conical shell to move synchronously; thereby causing the two material distribution members to merge or separate.

[0032] The second fabric component 12 includes a second semi-conical outer shell, a second semi-cylindrical inner shell, a second arc-shaped top plate, and a second arc-shaped bottom plate; the second arc-shaped top plate is located at the top of the second semi-conical outer shell and the second semi-cylindrical inner shell, and the second arc-shaped bottom plate is located at the bottom of the second semi-conical outer shell and the second semi-cylindrical inner shell; the second semi-conical outer shell, the second semi-cylindrical inner shell, the second arc-shaped top plate, and the second arc-shaped bottom plate together form an arc-shaped cavity with open ends, and the through holes at both ends of the first fabric component and the through holes at both ends of the second fabric component 12 fit together to form a closed conical cavity; the first semi-cylindrical inner shell 9 The diameter of the cylindrical body after the second semi-cylindrical inner shell is attached is larger than the diameter of the sprue 1; the second arc-shaped bottom plate is evenly provided with multiple through holes along the arc direction; the top diameter of the second semi-conical outer shell is larger than its bottom diameter; a vertical through-hole is provided on the second arc-shaped top plate, and a filter screen is provided at the bottom of the air outlet; after the airflow carries the protective slag into the closed conical cavity, the protective slag vortex falls, and part of the airflow is discharged upward through the air outlet, and the filter screen can prevent the airflow from carrying the protective slag out through the air outlet; the second end of the connecting bracket in the second sliding member is connected to the outer wall of the second semi-conical outer shell.

[0033] The feeding mechanism includes a square frame, a hopper 13, a weighing sensor 14, a discharge valve, a first storage hopper 15, a telescopic pipe, a conveying pipe 16, a gas cylinder 17, and a pneumatic conveying valve. The square frame is mounted on the upper surface of the sliding base 4 via a column. The hopper 13 passes through the central square hole of the square frame. The weighing sensor 14 is mounted on the upper surface of the square frame, and a horizontal plate on the side wall of the hopper 13 presses against the weighing sensor 14. A display screen is mounted on the square frame, and the signal output of the weighing sensor 14 is sent to the display screen. The weighing sensor 14 can detect the amount of material discharged from the hopper 13 in real time. A discharge valve is mounted at the bottom outlet of the hopper 13. The first storage hopper 15 is mounted on the column and is located on the upper surface of the hopper 13. Directly below; a pneumatic conveying valve is provided at the bottom of the first storage hopper 15, and the outlet of the pneumatic conveying valve is connected to the first end of the telescopic pipe; the gas cylinder 17 is located on the upper surface of the sliding base 4, and the gas outlet of the gas cylinder 17 is connected to the pneumatic conveying valve through a connecting pipe; the airflow in the gas cylinder 17 is conveyed to the protective slag through the pneumatic conveying valve into the telescopic pipe, and finally enters the first semi-conical shell 8; since the conical shells will move away from each other and move closer to each other, a telescopic pipe is provided for follow-up, to ensure that the protective slag can be smoothly sent into the connecting pipe when the connecting pipe is displaced; the second end of the telescopic pipe is connected to the first end of the conveying pipe 16, and the second end of the conveying pipe 16 is fixedly connected to the feed port on the side wall of the first semi-conical shell 8.

[0034] The side feeding section includes a rotating mechanism, a second storage hopper 18, and an opening and closing mechanism; the rotating mechanism is disposed on the crystallizer platform and is located on one side of the first slide rail 3; the second storage hopper 18 is disposed on the rotating mechanism, and the opening and closing mechanism is disposed on the second storage hopper 18.

[0035] The rotating mechanism includes a rotating column 19, an annular handle, and a horizontal connecting frame; the bottom end of the rotating column 19 is axially connected to the crystallizer platform; the annular handle is located at the top end of the rotating column 19; rotating the annular handle can drive the rotating column 19 to rotate, thereby driving the second storage hopper 18 to rotate and move; the horizontal connecting frame is located on the side wall of the rotating column 19, and one end of the horizontal connecting frame is connected to the outer wall of the second storage hopper 18.

[0036] The opening and closing mechanism includes a fixed inclined plate 20, a flap 21, a rotating shaft, a driven gear, a driving gear, a toothed chain 22, and a second motor 23. A fixed inclined plate 20 is provided on one side of the bottom of the second storage hopper 18, and the flap 21 is provided on the other side of the bottom of the second storage hopper 18 via a rotating shaft. One end of the rotating shaft passes through the side wall of the second storage hopper 18, and a driven gear is provided at the end of the rotating shaft. The housing of the second motor 23 is mounted on a horizontal connecting frame, and a driving gear is provided on the output shaft of the second motor 23. The driving gear and the driven gear are meshed and connected by a toothed chain 22. The second motor 23 can drive the rotating shaft to rotate, thereby causing the flap 21 to flip. When the flap 21 contacts the fixed inclined plate 20, the second storage hopper 18 cannot discharge material. When the second motor 23 drives the flap 21 to flip via the toothed chain 22, the protective slag is discharged through the gap between the flap 21 and the fixed inclined plate 20.

[0037] A method for adding protective slag to a crystallizer includes the following steps:

[0038] In the initial state, the sliding base 4 is located at the end away from the water inlet 1; the two sliders 7 are far apart from each other, and at this time the first and second feeding parts 12 do not contact each other; the two second storage hoppers 18 are located far away from the slag inlet 2 of the crystallizer; the fixed inclined plate 20 and the flap 21 at the bottom of the second storage hopper 18 contact and close the outlet of the second storage hopper 18.

[0039] Step 1: When protective slag needs to be added, the amount of protective slag to be added at one time is divided into three parts. One part of protective slag is conveyed to the first storage hopper 15 through the hopper 13. The amount of material added from the hopper 13 to the first storage hopper 15 is controlled by the weighing sensor 14. The amount reduced by the hopper 13 is the amount received by the first storage hopper 15. The other two parts of protective slag are respectively placed into the second storage hoppers 18 on both sides.

[0040] Step 2: Push the sliding base 4 to move until the water inlet 1 is between the first semi-cylindrical inner shell 9 and the second semi-cylindrical inner shell. Then start the first motor 5, and the two sliders 7 move in opposite directions and move closer to each other until the first semi-cylindrical inner shell 9 and the second semi-cylindrical inner shell merge to form a closed cavity. Then start the switch of the gas cylinder 17 and the pneumatic conveying valve, and use airflow to put the protective slag into the interior of the first semi-conical outer shell 8. The protective slag falls in a vortex inside until it falls onto the first arc-shaped bottom plate 11 and the second arc-shaped bottom plate, and falls into the crystallizer through the through hole at the bottom. Part of the airflow is discharged through the air outlet on the second arc-shaped top plate. The protective slag falls in a way that surrounds the water inlet 1, and uniformly covers the area around the water inlet 1.

[0041] Step 3: While performing Step 2, rotate the ring handle and rotate the rotating column 19 to move the second storage hopper 18 directly above the slag addition hole 2 of the crystallizer; after both second storage hoppers 18 are in position, start the second motor 23. The second motor 23 drives the gear chain 22 to rotate through the drive gear. The gear chain 22 drives the rotating shaft on the flip plate 21 to rotate, and finally drives the flip plate 21 to flip, thereby opening the channel between the flip plate 21 and the fixed inclined plate 20. The protective slag falls through the gap between the flip plate 21 and the fixed inclined plate 20. The feeding rate is controlled by controlling the flip angle of the flip plate 21.

[0042] Step 4: After the protective slag in the first storage hopper 15 and the second storage hopper 18 has been added, the second motor 23 drives the flap 21 to flip and contact the fixed inclined plate 20 to close the discharge port of the second storage hopper 18. Turn the ring handle to move the second storage hopper 18 away from the water outlet 1. Then close the switch of the gas cylinder 17 and the pneumatic conveying valve. The first motor 5 reverses and drives the two sliders 7 to move away from each other, thereby separating the first cloth piece and the second cloth piece 12. Finally, pull the sliding base 4 to move the first cloth piece and the second cloth piece 12 away from the water outlet 1. The crystallizer protective slag addition operation is now complete.

Claims

1. A protective slag feeding device suitable for crystallizers, characterized in that: It includes a sprue feeding section and a side feeding section; both the sprue feeding section and the side feeding section are set on the crystallizer platform in front of the sprue (1); there are two side feeding sections, which are symmetrically arranged on both sides of the sprue feeding section; the sprue feeding section includes a sliding mechanism, a feeding mechanism and a merging mechanism; the sliding mechanism is set on the crystallizer platform and is located directly in front of the sprue (1); the feeding mechanism and the merging mechanism are both set on the sliding mechanism; the sliding mechanism includes a first slide rail (3) and a sliding base (4); the first slide rail (3) is set on the crystallizer platform and is located directly in front of the sprue (1); the sliding base (4) is slidably set on the first slide rail (3); the merging mechanism includes a first motor (5), second slide rail (6), first sliding member, second sliding member, first fabric member and second fabric member (12); the second slide rail (6) is disposed on the upper end face of the sliding base (4), and the center line of the second slide rail (6) is perpendicular to the center line of the first slide rail (3); the housing of the first motor (5) is disposed on the upper end face of the sliding base (4), and the first motor (5) is located on one side of the second slide rail (6); the first sliding member and the second sliding member have the same structure, and they are both disposed on the second slide rail (6); the first fabric member is disposed on the first sliding member, and the second fabric member (12) is disposed on the second sliding member; the output shaft end of the first motor (5) is connected to one end of the lead screw, and the other end of the lead screw is connected to the sliding base (4). The upper end plate is shaft-connected, and the axis of the lead screw is parallel to the center line of the second slide rail (6); the first sliding member includes a slider (7), a lead screw nut and a connecting bracket; the slider (7) is slidably disposed on the second slide rail (6), the lead screw nut is disposed on the slider (7), the lead screw passes through the lead screw nut, and the lead screw nut in the first sliding member and the lead screw nut in the second sliding member are arranged in opposite directions to each other; the first end of the connecting bracket is connected to the slider (7); the first fabric component includes a first semi-conical outer shell (8), a first semi-cylindrical inner shell (9), a first arc-shaped top plate (10) and a first arc-shaped bottom plate (11); the first arc-shaped top plate (10) is disposed at the top of the first semi-conical outer shell (8) and the first semi-cylindrical inner shell (9), and the first arc-shaped bottom plate (11) is disposed at the top of the first semi-conical outer shell (8) and the first semi-cylindrical inner shell (9), and the first arc-shaped bottom plate (11) is disposed at the top of the first semi-conical outer shell (8) and the first semi-cylindrical inner shell (9), and the first arc-shaped bottom plate (11) is disposed at the top of the first semi-conical outer shell (8) and the first arc-shaped bottom plate (11). Plate (11) is disposed at the bottom end of the first semi-conical outer shell (8) and the first semi-cylindrical inner shell (9); the first semi-conical outer shell (8), the first semi-cylindrical inner shell (9), the first arc-shaped top plate (10) and the first arc-shaped bottom plate (11) together form an arc-shaped cavity with open ends; the first arc-shaped bottom plate (11) is uniformly provided with multiple through holes along the arc direction; the top diameter of the first semi-conical outer shell (8) is larger than the bottom diameter; the top of the side wall of the first semi-conical outer shell (8) is provided with a feed port; the second end of the connecting bracket in the first sliding member is connected to the outer wall of the first semi-conical outer shell (8); the second fabric component (12) includes the second semi-conical outer shell, the second semi-cylindrical inner shell, the second arc-shaped top plate and the second arc-shaped bottom plate;The second arc-shaped top plate is located at the top of the second semi-conical outer shell and the second semi-cylindrical inner shell, and the second arc-shaped bottom plate is located at the bottom of the second semi-conical outer shell and the second semi-cylindrical inner shell; the second semi-conical outer shell, the second semi-cylindrical inner shell, the second arc-shaped top plate, and the second arc-shaped bottom plate together form an arc-shaped cavity with open ends, and the through holes at both ends of the first fabric component and the through holes at both ends of the second fabric component (12) are matched and connected; the diameter of the cylindrical body after the first semi-cylindrical inner shell (9) and the second semi-cylindrical inner shell are attached is larger than the diameter of the sprue (1); the second arc-shaped bottom plate is uniformly provided with multiple through holes along the arc direction; the top diameter of the second semi-conical outer shell is larger than its bottom diameter; a vertical through-hole is provided on the second arc-shaped top plate, and a filter screen is provided at the bottom of the air outlet; the second end of the connecting bracket in the second sliding component is connected to the outer wall of the second semi-conical outer shell.

2. The protective slag feeding device for crystallizers according to claim 1, characterized in that: The feeding mechanism includes a square frame, a hopper (13), a weighing sensor (14), a discharge valve, a first storage hopper (15), a telescopic pipe, a conveying pipe (16), a gas cylinder (17), and a pneumatic conveying valve; the square frame is mounted on the upper surface of the sliding base (4) via a column; the hopper (13) passes through the central square hole of the square frame; a weighing sensor (14) is mounted on the upper surface of the square frame, and a horizontal plate on the side wall of the hopper (13) presses against the weighing sensor (14); a display screen is mounted on the square frame, and the signal output of the weighing sensor (14) is sent to the display screen; the hopper (15) 3) A discharge valve is provided at the bottom outlet of the first storage hopper (15); the first storage hopper (15) is set on the column and is located directly below the silo (13); a pneumatic conveying valve is provided at the bottom of the first storage hopper (15), and the outlet of the pneumatic conveying valve is connected to the first end of the telescopic pipe; the gas cylinder (17) is set on the upper surface of the sliding base (4), and the gas outlet of the gas cylinder (17) is connected to the pneumatic conveying valve through a connecting pipe; the second end of the telescopic pipe is connected to the first end of the conveying pipe (16), and the second end of the conveying pipe (16) is fixedly connected to the inlet on the side wall of the first semi-conical shell (8).

3. The protective slag feeding device for crystallizers according to claim 2, characterized in that: The side feeding section includes a rotating mechanism, a second storage hopper (18), and an opening and closing mechanism; the rotating mechanism is set on the crystallizer platform and is located on one side of the first slide rail (3); the second storage hopper (18) is set on the rotating mechanism, and the opening and closing mechanism is set on the second storage hopper (18).

4. The protective slag feeding device for crystallizers according to claim 3, characterized in that: The rotating mechanism includes a rotating column (19), an annular handle, and a horizontal connecting frame; the bottom end of the rotating column (19) is axially mounted on the crystallizer platform; the annular handle is mounted on the top end of the rotating column (19); the horizontal connecting frame is mounted on the side wall of the rotating column (19), and one end of the horizontal connecting frame is connected to the outer wall of the second storage hopper (18).

5. The protective slag feeding device for crystallizers according to claim 4, characterized in that: The opening and closing mechanism includes a fixed inclined plate (20), a flap (21), a rotating shaft, a driven gear, a driving gear, a gear chain (22), and a second motor (23). A fixed inclined plate (20) is provided on one side of the bottom end of the second storage hopper (18), and the flap (21) is provided on the other side of the bottom end of the second storage hopper (18) through a rotating shaft. One end of the rotating shaft passes through the side wall of the second storage hopper (18), and a driven gear is provided at the end of the rotating shaft. The housing of the second motor (23) is provided on a horizontal connecting frame, and a driving gear is provided on the output shaft of the second motor (23). The driving gear and the driven gear are connected by a gear chain (22).

6. A method for feeding protective slag using the protective slag feeding device for crystallizers as described in claim 5, characterized in that: Includes the following steps: In the initial state, the sliding base (4) is located at the end away from the water inlet (1); the two sliders (7) are far away from each other, and the first and second feeding parts (12) do not contact each other; the two second storage hoppers (18) are located far away from the slag inlet (2) of the crystallizer; the fixed inclined plate (20) and the flap (21) at the bottom of the second storage hopper (18) contact and close the outlet of the second storage hopper (18); Step 1: When protective slag needs to be added, the amount of protective slag to be added at one time is divided into three parts. One part of the protective slag is transported to the first storage hopper (15) through the hopper (13). The amount of material from the hopper (13) to the first storage hopper (15) is controlled by the weighing sensor (14). The other two parts of protective slag are respectively placed in the second storage hoppers (18) on both sides. Step 2: Push the sliding base (4) to move until the water inlet (1) is between the first semi-cylindrical inner shell (9) and the second semi-cylindrical inner shell. Then start the first motor (5), and the two sliders (7) move in opposite directions and approach each other until the first semi-cylindrical inner shell (9) and the second semi-cylindrical inner shell merge to form a closed cavity. Then start the switch of the gas cylinder (17) and the pneumatic conveying valve. The protective slag is thrown into the first semi-conical outer shell (8) by the airflow. The protective slag falls in a vortex inside until it falls onto the first arc-shaped bottom plate (11) and the second arc-shaped bottom plate, and falls into the crystallizer through the through hole at the bottom. Part of the airflow is discharged through the air outlet on the second arc-shaped top plate. The protective slag falls in a way that surrounds the water inlet (1) and evenly covers the area around the water inlet (1). Step 3: While performing Step 2, rotate the ring handle and rotate the rotating column (19) to move the second storage hopper (18) to the top of the slag addition hole (2) of the crystallizer; after the second storage hoppers (18) on both sides are in place, start the second motor (23). The second motor (23) drives the gear chain (22) to rotate through the drive gear. The gear chain (22) drives the rotating shaft on the flip plate (21) to rotate, and finally drives the flip plate (21) to flip, thereby opening the channel between the flip plate (21) and the fixed inclined plate (20). The protective slag falls through the gap between the flip plate (21) and the fixed inclined plate (20). The feeding rate is controlled by controlling the flip angle of the flip plate (21). Step 4: After the protective slag in the first storage hopper (15) and the second storage hopper (18) has been added, the second motor (23) drives the flap (21) to flip and contact the fixed inclined plate (20) to close the outlet of the second storage hopper (18). Turn the ring handle to move the second storage hopper (18) away from the water outlet (1). Then close the switch of the gas cylinder (17) and the pneumatic conveying valve. The first motor (5) reverses and drives the two sliders (7) to move away from each other, so that the first cloth piece and the second cloth piece (12) are separated. Finally, pull the sliding base (4) to move the first cloth piece and the second cloth piece (12) away from the water outlet (1). The crystallizer protective slag addition operation is now complete.

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