A charging device for a converter furnace

Abstract

This utility model relates to a converter refueling feeding device, including a movable support, a feeding mechanism, and a connecting seat. The connecting seat is fixed to the top of the movable support. The feeding mechanism is mounted on the movable support via the connecting seat and can rotate horizontally and swing vertically. The feeding mechanism includes a material cylinder hinged to the connecting seat. A catapult and a catapult spring are coaxially mounted inside the material cylinder. One end of the catapult is mounted inside the material cylinder, and the other end extends from the rear end of the material cylinder and is connected to the control mechanism via a pull rope. The catapult spring is mounted on the catapult, with its two ends connected to the catapult and the material cylinder, respectively. When the catapult spring is stretched, it can drive the catapult to launch the refueling material along the material cylinder to a predetermined position. The control mechanism is movably connected to the movable support and can rotate synchronously with the material cylinder. The control mechanism can use the pull rope to pull the catapult to compress the catapult spring for multi-stage feeding. This application has a simple and reasonable structure, is flexible in movement and easy to use. The use of spring feeding saves manpower, improves the accuracy of feeding, and increases labor efficiency.

Description

Technical Field

[0001] This utility model relates to the field of converter maintenance technology, specifically a converter charging device for furnace repair. Background Technology

[0002] Converter steelmaking relies on chemical reactions between raw materials to complete the smelting process. These vigorous reactions often damage the converter furnace. Currently, to extend the converter's service life, furnace repair is frequently required in the later stages of its operation to maintain the furnace's shape and condition and ensure its normal use. Common furnace repair methods include: slag splashing, machine spraying, and manual slag throwing. Slag splashing is the simplest method, using gas to splash slag onto the furnace body. This is online maintenance without additional manual intervention, but it cannot repair large-area localized damage. Spraying repair uses a spraying machine to perform targeted maintenance on a specific part of the converter. Powdered repair material is added to a high-pressure tank and sprayed onto the damaged area through a long pipe, repairing large-area localized damage. However, this method requires multiple operators, various tools, and a long repair time. Manual throwing involves manually throwing pre-packaged repair material into a damaged area of ​​the converter. This method overcomes the shortcomings of the previous two methods, enabling rapid repair. However, it requires skilled operators, sometimes resulting in insufficient throwing force or inaccurate landing points. Furthermore, manual throwing is inefficient, leading to long repair times. Therefore, a converter repair feeding device capable of using manual throwing is needed. Utility Model Content

[0003] The purpose of this invention is to provide a converter charging device capable of charging and replenishing the furnace, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A converter refueling feeding device includes a movable support, a feeding mechanism, and a connecting seat. The connecting seat is fixed to the top of the movable support. The feeding mechanism is mounted on the movable support via the connecting seat and can rotate horizontally and swing vertically. The feeding mechanism includes a material cylinder hinged to the connecting seat. A catapult and a catapult spring are coaxially mounted inside the material cylinder. One end of the catapult is mounted inside the material cylinder, and the other end extends from the rear end of the material cylinder and is connected to a control mechanism via a pull rope. The catapult spring is mounted on the catapult, and its two ends are respectively connected to the catapult and the material cylinder.

[0006] The aforementioned converter refueling feeding device includes a catapult comprising a push plate, a connecting rod, and a tail baffle. The push plate and the tail baffle are coaxially and fixedly connected by the connecting rod. The push plate is fitted inside the material cylinder, the connecting rod extends out from the rear end of the material cylinder, and the pulling rope is suspended from the tail baffle.

[0007] The aforementioned converter refueling and feeding device includes a tail baffle comprising a baffle, a connecting ring, and a stud. The connecting ring and the stud are respectively disposed on both sides of the baffle. The stud is threadedly connected to the connecting rod, and the pulling rope is suspended on the connecting ring.

[0008] The aforementioned converter charging device includes a control mechanism comprising a guide assembly, an ejector assembly, and a movable base plate. The movable base plate is movably mounted on the movable support. The guide assembly and the ejector assembly are fixed to the movable base plate. The upper end of the guide assembly is hinged to the material cylinder, which can drive the movable base plate to rotate synchronously with the material cylinder around the connecting seat. The ejector assembly is fixed to the movable base plate and can rotate synchronously with it. The ejector assembly is fixedly connected to the pulling rope.

[0009] The aforementioned converter refueling and feeding device includes a guiding assembly comprising a telescopic column, a curved rod, a small bracket, and a guide wheel. One end of the curved rod is hinged to the material cylinder, while the other end is suspended in the air. The guide wheel is mounted on the suspended end of the curved rod via the small bracket. The pulling rope is fixedly connected to the ejection assembly along the guide wheel. The bottom of the telescopic column is fixed to the movable base plate, and the top is movably connected to the curved rod.

[0010] The aforementioned converter refueling feeding device includes a catapult assembly comprising a traction pedal, a release plate, and a guide plate. The traction pedal is disposed between the release plate and the guide plate and can slide up and down along the guide plate. The release plate is provided with multiple slots from top to bottom that are adapted to the traction pedal. The traction pedal is fixedly connected to the traction rope.

[0011] In the aforementioned converter refueling and feeding device, the release plate is mounted on the movable base plate via a reset torsion seat. The release plate is hinged to the reset torsion seat, and a reset torsion spring is provided at the connection point. The reset torsion seat is fixed to the movable base plate through an elongated hole, and its fixed position is adjustable.

[0012] The aforementioned converter charging device includes a cylinder with a sealing plate and a guide sleeve at one end. The guide sleeve is coaxially arranged with the cylinder and passes through the center of the sealing plate. Handles are symmetrically arranged on the left and right sides of the cylinder, and a first hinge seat and a second hinge seat are arranged on the lower side. The first hinge seat is hinged to the connecting seat, and the second hinge seat is hinged to the guide assembly. The ejector passes through the guide sleeve on the cylinder.

[0013] In the aforementioned converter refueling and feeding device, the guide sleeve is cylindrical in shape, and a buffer spring is fitted on the cylindrical surface located on the outer side of the cylinder.

[0014] The aforementioned converter charging device includes a base and a lifting frame. The base is a flat trolley with rollers at the bottom. The lifting frame is a U-shaped frame that is fitted together and set at one end of the base by an electric push rod. The connecting seat is fixed to the top of the lifting frame and can rise and fall with the lifting frame.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] The converter repair feeding device provided by this utility model includes a movable support, a feeding mechanism, and a connecting seat. The feeding mechanism is mounted on the movable support via the connecting seat and can rotate horizontally and swing up and down. The feeding mechanism includes a material cylinder hinged to the connecting seat. A catapult and a catapult spring are coaxially mounted inside the material cylinder. One end of the catapult is fitted inside the material cylinder, and the other end extends from the rear end of the material cylinder and is connected to the control mechanism via a pull rope. When the catapult spring is stretched, it can drive the catapult to launch the repair material along the material cylinder to a predetermined position. The control mechanism can use the pull rope to pull the catapult to compress the catapult spring for multi-level catapult force feeding. This application has a simple and reasonable structure, is convenient to use and flexible to move. The foot pedal control spring feeding reduces the labor intensity of operators, saves physical strength, and also saves auxiliary manpower. It ensures the throwing force of the material while improving the accuracy of the dropping position, shortens the repair time of the converter, and improves the repair efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle;

[0019] Figure 3 This is a front view structural diagram of the present invention;

[0020] Figure 4 This is a side view of the structure of this utility model;

[0021] Figure 5 This is a cross-sectional view of the connection structure of the material cylinder part of this utility model.

[0022] In the diagram: 1. Movable support; 1-1. Base; 1-2. Lifting frame; 2. Feeding mechanism; 2-1. Material cylinder; 2-1-1. Cylinder body; 2-1-2. Sealing plate; 2-1-3. Guide sleeve; 2-1-4. Handle; 2-1-5. First hinge seat; 2-1-6. Second hinge seat; 2-2. Ejector; 2-2-1. Push plate; 2-2-2. Connecting rod; 2-2-3. Tail baffle; 2-2-31. Baffle; 2-2-32. Connecting ring; 2- 3. Ejection spring; 2-4. Pull rope; 2-5. Control mechanism; 2-5-1. Guide assembly; 2-5-11. Telescopic column; 2-5-12. Crank rod; 2-5-13. Small bracket; 2-5-14. Guide wheel; 2-5-2. Ejection assembly; 2-5-21. Pull pedal; 2-5-22. Release plate; 2-5-23. Guide plate; 2-5-24. Reset torsion seat; 2-5-3. Moving base plate; 2-6. Buffer spring; 3. Connecting seat. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0024] like Figures 1 to 5 The converter repair feeding device shown includes a movable support 1, a feeding mechanism 2, and a connecting seat 3. The connecting seat 3 is fixed to the top of the movable support 1. The feeding mechanism 2 is mounted on the movable support 1 via the connecting seat 3 and can rotate horizontally and swing up and down. The feeding mechanism 2 includes a material cylinder 2-1 hinged to the connecting seat 3. A catapult 2-2 and a catapult spring 2-3 are coaxially mounted inside the material cylinder 2-1. One end of the catapult 2-2 is mounted inside the material cylinder 2-1, and the other end extends from the rear end of the material cylinder 2-1 and is connected to the control mechanism 2-5 via a pull rope 2-4. The catapult spring 2-3 is mounted on the catapult 2-2, and its two ends are connected to the catapult 2-2 and the material cylinder 2-1, respectively. When the catapult spring 2-3 is stretched, it can drive the catapult 2-2 to launch the repair material along the material cylinder 2-1 to the predetermined repair position of the converter.

[0025] like Figure 3 and Figure 5As shown, the catapult 2-2 includes a push plate 2-2-1, a connecting rod 2-2-2, and a tail baffle 2-2-3. The push plate 2-2-1 and the tail baffle 2-2-3 are fixedly connected coaxially through the connecting rod 2-2-2. The push plate 2-2-1 is fitted inside the material cylinder 2-1. The connecting rod 2-2-2 extends out from the rear end of the material cylinder 2-1. The catapult spring 2-3 is fitted on the connecting rod 2-2-2 and located between the push plate 2-2-1 and the material cylinder 2-1. The catapult 2-2 can slide back and forth along the material cylinder 2-1. The pull rope 2-4 is suspended on the tail baffle 2-2-3. The pull rope 2-4 can cause the catapult 2-2 to compress the catapult spring 2-3 to project the furnace feed material. In this embodiment of the application, the tail baffle 2-2-3 is fixed to the end of the connecting rod 2-2-2 by threads. The tail baffle 2-2-3 includes a baffle 2-2-31, a connecting ring 2-2-32 and a stud. The connecting ring 2-2-32 and the stud are respectively disposed on both sides of the baffle 2-2-31. The stud is connected to the connecting rod 2-2-2 by threads. The pulling rope 2-4 is suspended on the connecting ring 2-2-32.

[0026] like Figures 1 to 4 As shown, the control mechanism 2-5 includes a guide assembly 2-5-1, an ejection assembly 2-5-2, and a movable base plate 2-5-3. The movable base plate 2-5-3 is movably mounted on the movable support 1 via ball bearings at its bottom and can slide on the movable support 1. The guide assembly 2-5-1 and the ejection assembly 2-5-2 are fixed to the movable base plate 2-5-3 and can move synchronously with it. The upper end of the guide assembly 2-5-1 is hinged to the material cylinder 2-1 and can drive the movable base plate 2-5-3 to rotate synchronously with the material cylinder 2-1 around the connecting seat 3. The ejection assembly 2-5-2 is fixed to the movable base plate 2-5-3 and can rotate synchronously with it. The ejection assembly 2-5-2 is fixedly connected to the pulling rope 2-4.

[0027] Guide assembly 2-5-1 includes a telescopic column 2-5-11, a curved rod 2-5-12, a small bracket 2-5-13, and a guide wheel 2-5-14. One end of the curved rod 2-5-12 is hinged to the material cylinder 2-1, and the other end is suspended. The guide wheel 2-5-14 is mounted on the suspended end of the curved rod 2-5-12 via the small bracket 2-5-13. The pull rope 2-4 is fixedly connected to the ejection assembly 2-5-2 along the guide wheel 2-5-14. Between the guide wheel and the stop wheel of -5-14, it can slide along the guide wheel 2-5-14 without detaching from the guide groove. The bottom of the telescopic column 2-5-11 is fixed on the movable base plate 2-5-3, and the top is movably connected to the crank rod 2-5-12. The guide assembly 2-5-1 can ensure that the pulling rope 2-4 does not twist, and ensure that the force on the catapult 2-2 and the material cylinder 2-1 are on the same axis. The friction between the supplementary material ejected along the axis of the material cylinder 2-1 and the cylinder wall of the material cylinder 2-1 is minimized.

[0028] The ejection assembly 2-5-2 includes a pull pedal 2-5-21, a release plate 2-5-22, and a guide plate 2-5-23. The pull pedal 2-5-21 is fixedly connected to the pull rope 2-4. The pull pedal 2-5-21 is positioned between the release plate 2-5-22 and the guide plate 2-5-23 and can slide up and down along the guide plate 2-5-23. The release plate 2-5-22 has multiple slots from top to bottom that are adapted to the pull pedal 2-5-21. When the operator steps down on the pull pedal 2-5-21, the pull rope 2-4 can be pulled down to pull the ejector 2-2. Different ejection forces can be set by the pull pedal 2-5-21 being engaged in different slots on the release plate 2-5-22. The guide plate 2-5-23 is provided with a sliding groove adapted to the pull pedal 2-5-21. A limiting plate is provided at the upper end of the sliding groove to prevent the guide plate 2-5-23 from dislodging. Release plate 2-5-22 is mounted on movable base plate 2-5-3 via reset torsion seat 2-5-24. Release plate 2-5-22 and reset torsion seat 2-5-24 are hinged together, and a reset torsion spring is provided at the connection. When the operator steps on release plate 2-5-22 to rotate it, the pull pedal 2-5-21 disengages from the slot of release plate 2-5-22, and ejector 2-2, driven by compressed ejection spring 2-3, ejects the furnace charge. Reset torsion seat 2-5-2 4. The fixed position of the device is adjustable and can be adjusted by fixing it to the movable base plate 2-5-3 through the elongated hole. After moving the reset torsion seat 2-5-24 outward and disengaging it from the position of engaging with the traction pedal 2-5-21, the traction pedal 2-5-21 can be used steplessly. That is, the operator can step on the traction pedal 2-5-21 to any position to release and eject the furnace material. The stepless mode operation is faster and the ejection force can be flexibly controlled, but an assistant is required to put the furnace material into the material cylinder 2-1.

[0029] like Figure 5 As shown, the material cylinder 2-1 includes a cylinder body 2-1-1. A sealing plate 2-1-2 and a guide sleeve 2-1-3 are provided at one end of the cylinder body 2-1-1. The guide sleeve 2-1-3 is coaxially arranged with the cylinder body 2-1-1 and passes through the center of the sealing plate 2-1-2. Handles 2-1-4 are symmetrically arranged on the left and right sides of the cylinder body 2-1-1. A first hinge seat 2-1-5 and a second hinge seat 2-1-6 are provided on the lower side. The first hinge seat 2-1-5 is hinged to the connecting seat 3, and the second hinge seat 2-1-6 is hinged to the guide assembly 2-5-1. The ejector 2-2 passes through the guide sleeve 2-1-3 and is mounted on the cylinder body 2-1-1. Furthermore, the guide sleeve 2-1-3 is cylindrical in shape, and a buffer spring 2-6 is fitted on its cylindrical surface located outside the cylinder body 2-1-1. The buffer spring 2-6 prevents the tail baffle 2-2-3 from colliding with the guide sleeve 2-1-3.

[0030] like Figures 1 to 4As shown, the mobile support 1 includes a base 1-1 and a lifting frame 1-2. The base 1-1 is a flat trolley with rollers at the bottom. The lifting frame 1-2 is a U-shaped frame that is fitted together and set at one end of the base 1-1 by an electric push rod. The connecting seat 3 is fixed to the top of the lifting frame 1-2 and can rise and fall with the lifting frame 1-2. According to the location of the converter repair, the height of the lifting frame 1-2 is adjusted to set the throwing direction and throwing angle of the furnace repair material. In this embodiment, a 1 kg bag of furnace repair material is thrown at a distance of about 11 meters, and the landing point is scattered at about 0.3 meters. The accuracy and distance can meet the furnace repair requirements. The operator can feed the material over a long distance, which improves the operating environment, is beneficial to the health of the personnel, and can also extend the service life of the equipment.

[0031] Workflow: The operator moves the device to the vicinity of the converter inlet, adjusts the height of the moving support, and rotates the material cylinder to align the point of impact of the refill material with the location to be repaired. The operator then begins projecting the refill material. The operator presses down the traction pedal, which pulls the traction rope to compress the ejector spring. After the traction pedal engages with the release plate, the operator can fill the bagged refill material into the material cylinder. Releasing the release plate releases energy, and the ejector spring propels the refill material out of the cylinder. Alternatively, the release plate can be moved away. With a filling assistant present, one operator presses down the traction pedal while the assistant fills the refill material. The operator controls the pressure applied to the traction pedal to achieve rapid material delivery.

[0032] This article uses specific embodiments to illustrate the principles and implementation methods of this utility model in detail. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. Those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A charging device for a converter, characterized in that: The device includes a movable support (1), a feeding mechanism (2), and a connecting seat (3). The connecting seat (3) is fixed to the top of the movable support (1). The feeding mechanism (2) is mounted on the movable support (1) via the connecting seat (3) and can rotate horizontally and swing up and down. The feeding mechanism (2) includes a material cylinder (2-1) hinged to the connecting seat (3). A catapult (2-2) and a catapult spring (2-3) are coaxially mounted inside the material cylinder (2-1). One end of the catapult (2-2) is mounted inside the material cylinder (2-1), and the other end extends from the rear end of the material cylinder (2-1) and is connected to the control mechanism (2-5) via a pull rope (2-4). The catapult spring (2-3) is mounted on the catapult (2-2), and its two ends are connected to the catapult (2-2) and the material cylinder (2-1) respectively.

2. A charging device for a converter according to claim 1, characterized in that: The catapult (2-2) includes a push plate (2-2-1), a connecting rod (2-2-2), and a tail baffle (2-2-3). The push plate (2-2-1) and the tail baffle (2-2-3) are coaxially fixedly connected by the connecting rod (2-2-2). The push plate (2-2-1) is fitted inside the material cylinder (2-1). The connecting rod (2-2-2) extends out from the rear end of the material cylinder (2-1). The pulling rope (2-4) is suspended on the tail baffle (2-2-3).

3. A charging device for a converter according to claim 2, characterized in that: The tail baffle (2-2-3) includes a baffle (2-2-31), a connecting ring (2-2-32), and a stud. The connecting ring (2-2-32) and the stud are respectively disposed on both sides of the baffle (2-2-31). The stud is threadedly connected to the connecting rod (2-2-2). The pulling rope (2-4) is suspended on the connecting ring (2-2-32).

4. A charging device for a converter according to claim 3, characterized in that: The control mechanism (2-5) includes a guide assembly (2-5-1), an ejection assembly (2-5-2), and a movable base plate (2-5-3). The movable base plate (2-5-3) is movably mounted on the movable support (1). The guide assembly (2-5-1) and the ejection assembly (2-5-2) are fixed on the movable base plate (2-5-3). The upper end of the guide assembly (2-5-1) is hinged to the material cylinder (2-1) and can drive the movable base plate (2-5-3) to rotate synchronously with the material cylinder (2-1) around the connecting seat (3). The ejection assembly (2-5-2) is fixed on the movable base plate (2-5-3) and can rotate synchronously with it. The ejection assembly (2-5-2) is fixedly connected to the pulling rope (2-4).

5. A charging device for a converter as claimed in claim 4, characterized in that: The guide assembly (2-5-1) includes a telescopic column (2-5-11), a curved rod (2-5-12), a small bracket (2-5-13), and a guide wheel (2-5-14). One end of the curved rod (2-5-12) is hinged to the material cylinder (2-1), and the other end is suspended. The guide wheel (2-5-14) is located at the suspended end of the curved rod (2-5-12) through the small bracket (2-5-13). The pull rope (2-4) is fixedly connected to the ejection assembly (2-5-2) along the guide wheel (2-5-14). The bottom of the telescopic column (2-5-11) is fixed on the movable base plate (2-5-3), and the top is movably connected to the curved rod (2-5-12).

6. A charging device for a converter as claimed in claim 5, characterized in that: The ejection assembly (2-5-2) includes a traction pedal (2-5-21), a release plate (2-5-22), and a guide plate (2-5-23). ​​The traction pedal (2-5-21) is disposed between the release plate (2-5-22) and the guide plate (2-5-23) and can slide up and down along the guide plate (2-5-23). ​​The release plate (2-5-22) has multiple slots from top to bottom that are adapted to the traction pedal (2-5-21). The traction pedal (2-5-21) is fixedly connected to the traction rope (2-4).

7. A charging device for a converter according to claim 6, characterized in that: The release plate (2-5-22) is mounted on the movable base plate (2-5-3) via a reset torsion seat (2-5-24). The release plate (2-5-22) and the reset torsion seat (2-5-24) are hinged together, and a reset torsion spring is provided at the connection point. The reset torsion seat (2-5-24) is fixed to the movable base plate (2-5-3) through an elongated hole, and its fixed position is adjustable.

8. A charging device for a converter according to claim 4, characterized in that: The material cylinder (2-1) includes a cylinder body (2-1-1). One end of the cylinder body (2-1-1) is provided with a sealing plate (2-1-2) and a guide sleeve (2-1-3). The guide sleeve (2-1-3) is coaxially arranged with the cylinder body (2-1-1) and passes through the center of the sealing plate (2-1-2). The left and right sides of the cylinder body (2-1-1) are symmetrically provided with handles (2-1-4). The lower side is provided with a first hinge seat (2-1-5) and a second hinge seat (2-1-6). The first hinge seat (2-1-5) is hinged to the connecting seat (3), and the second hinge seat (2-1-6) is hinged to the guide assembly (2-5-1). The ejector (2-2) passes through the guide sleeve (2-1-3) on the cylinder body (2-1-1).

9. A converter charging device according to claim 8, characterized in that: The guide sleeve (2-1-3) is cylindrical in shape, and a buffer spring (2-6) is fitted on the cylindrical surface located outside the cylinder (2-1-1).

10. A charging device for a vessel according to any one of claims 1 to 9, characterized in that: The mobile support (1) includes a base (1-1) and a lifting frame (1-2). The base (1-1) is a flat trolley with rollers provided at the bottom. The lifting frame (1-2) is a "冂"-shaped frame sleeved up and down and is arranged at one end of the base (1-1) through an electric push rod. The connecting seat (3) is fixed to the top of the lifting frame (1-2) and can rise and fall with the lifting frame (1-2).

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