Device for adding blocky alloy into AOD (argon oxygen decarburization) furnace

Abstract

The utility model relates to the field of steelmaking, in particular to a device for adding blocky alloy to an AOD furnace, which comprises a pushing component, a slag-stopping heat-insulating wall and a bearing component, the pushing component comprises a push rod, a bearing claw arranged at the front end of the push rod and a rotating handle arranged at the rear end of the push rod, the bearing component comprises a bearing hook and a supporting rod, the bearing hook and the supporting rod are arranged on the outer side of a feeding port of the slag-stopping heat-insulating wall, the two ends of the supporting rod are erected on the bearing hook, the supporting rod is arranged outside the feeding port in a crossing mode, and the bearing claw comprises a sliding rod part coaxial or parallel to the push rod and a plurality of limiting claw parts arranged on the two sides of the sliding rod part in a supported mode. The slag-stopping heat-insulating wall is arranged outside the furnace mouth of the AOD furnace, a worker can lift up the push rod, then the bearing claw part at the front end of the push rod is erected on the supporting rod, another worker places an alloy block on the bearing claw, and after placement is completed, the alloy block is placed on the bearing claw part. A control worker stands at the far end away from the feeding port and pushes the push rod forwards, and then the bearing claw can be pushed into the feeding port for feeding.

Description

Technical Field

[0001] The invention relates to the field of steelmaking, in particular to a device for adding block alloy to an AOD furnace. Background Art

[0002] During the steelmaking process, some block alloys need to be added to the AOD furnace steelmaking process. For example, aluminum ingots need to be added during the reduction period of the AOD furnace for deep deoxidation. The prior art requires manual input of aluminum ingots into the furnace. The weight of each aluminum ingot is about 20kg. The manual input is very labor-intensive, and splashing will occur when the aluminum ingot is put into the furnace, which can easily cause burns to workers. Workers need to wear protective clothing when operating. For such a high-temperature working environment, there are dangers and the difficulty of work is increased. There are also some safe automatic feeding equipment in the field of steelmaking, but its entire volume is large, and the fixed position setting is suitable for a large amount of feeding. It is not suitable for the small amount of aluminum ingots in the AOD furnace of this application, which will cause a waste of cost. For example, the application number "CN202321787821.5" discloses a steelmaking furnace that can automatically feed, including a base, a connecting mechanism and a hand wheel, and a support rod is arranged above the base, and one side of the support rod is connected to the steelmaking furnace body. The steelmaking furnace capable of automatic feeding starts the No. 2 motor so that the No. 2 motor can rotate the spiral conveyor rod connected to the output end, so that the spiral conveyor rod can transport the stored materials inside the storage box, and the auxiliary raw materials can enter the feeding pipe through the feeding port connected to the side of the conveying box. The equipment is large, with many parts and complicated process steps. If it is applied to the small amount of feeding of the AOD furnace of this application, it will not only greatly increase the space requirements of the factory, but also increase the cost and reduce the production efficiency. Therefore, it is very necessary to design a device for feeding block materials that can be used at any time, which is flexible, convenient and safe. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and to propose a device for adding bulk alloy to an AOD furnace.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A device for adding block alloys to an AOD furnace comprises a pushing component, a slag-blocking insulation wall and a supporting component, wherein the pushing component comprises a push rod, a supporting claw arranged at the front end of the push rod and a turning handle arranged at the rear end of the push rod, the supporting component comprises a supporting hook and a supporting rod arranged outside a feeding port of the slag-blocking insulation wall, both ends of the supporting rod are mounted on the supporting hook, and the support rod is straddled outside the feeding port, the supporting claw comprises a sliding rod portion coaxial or parallel to the push rod and a plurality of limiting claw portions supported on both sides of the sliding rod portion, and the bottom end of the sliding rod portion is lower than the bottom end of the limiting claw portion.

[0006] Preferably, the support rod is a rotatable round rod, and at least one support rod is provided in the supporting hook.

[0007] Preferably, the feeding port is provided with two sets of upper and lower supporting hooks, and the gap between the hook opening of the lower supporting hook and the bottom of the upper supporting hook is smaller than the narrowest spacing of the cross section of the support rod.

[0008] Preferably, an anti-slip component is provided between the slag-blocking insulation wall and the support rod, the anti-slip component comprises a triangular wedge plate, and a limiting hook is provided at the bottom of the front end of the push rod.

[0009] Preferably, the anti-slip component includes two wedge plates, and the tip portion at the lower end and the horizontal bottom end at the upper end of the two wedge plates are directly connected at one end and connected through a connecting plate at the other end.

[0010] Preferably, the wedge plate is provided with a mounting ear on the outer side facing away from the slag retaining and heat insulation wall, and a mounting opening which can be mounted on the support rod is formed between the mounting ear and the wedge plate.

[0011] Preferably, the push rod comprises a core rod and a sleeve rod, the supporting claw is connected to the core rod, the sliding rod portion is formed by the core rod extending forward, and the sleeve rod and the core rod can slide in an axial direction.

[0012] Preferably, the limiting claws on the same side are further connected with a bottom connecting plate, and / or an anti-deflection plate is provided at the bottom of the front end of the sleeve rod.

[0013] Preferably, the front end of the sleeve rod is provided with a sealing end portion for abutting against the front end of the core rod, the rear bottom of the sleeve rod is hollowed out, the core rod and the rear end of the sleeve rod are both provided with a turning handle, and when the front end of the core rod abuts against the sealing end portion, the turning handle on the core rod also abuts against the rear side of the turning handle of the sleeve rod.

[0014] Preferably, a limiting hook is provided at the bottom of the front end of the sleeve rod, the cross-section of the inner cavity at the front end of the sleeve rod is triangular or irregular in shape, and at least the front end of the core rod is adapted to the triangular or irregular shape of the front end of the sleeve rod.

[0015] Preferably, a narrower bottom connecting plate is symmetrically arranged on both sides of the sliding rod portion, and the bottom connecting plate is connected between the limiting claw portions on the same side, and the rear end of the bottom connecting plate extends backward beyond the limiting claw portion located at the rear end, and the length of the bottom connecting plate exceeding the limiting claw portion located at the rear end is greater than the distance from the support rod to the limiting claw portion after being sent into the feeding port for deflection into the feeding position, and the bottom end of the bottom connecting plate is higher than the bottom end of the sliding rod portion.

[0016] Beneficial effects:

[0017] 1. This application sets a slag-blocking insulation wall outside the furnace mouth of the AOD furnace, and opens a feeding port on the slag-blocking insulation wall, so that it can have both heat insulation and slag blocking effects to a certain extent. Then, a supporting component is set on the feeding port to support the front end of the push component. The specific staff can lift the push rod, and then put the supporting claw part of the front end of the push rod on the support rod, and then let other staff put the alloy block on the supporting claw. After the placement is completed, the operating staff stands at the far end away from the feeding port and pushes the push rod forward to push the supporting claw into the feeding port. After pushing it into place, the push rod is rotated to put the block alloy on the supporting hook into the AOD furnace. Thereby, it can have a good heat insulation effect, and at the same time prevent the splashing slag from injuring the staff. Compared with the existing personnel feeding by hand, the labor intensity of the workers is greatly reduced. And the device structure of this application is simple, relatively clever, low cost, easy to operate, and improves work efficiency. It can be used on site for flexible use and small size.

[0018] 2. The components of the present application are simple in structure, lightweight, low in cost and easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 The structure of the present application with a core rod and a sleeve rod is shown in FIG. Figure 1 ;

[0021] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the part in;

[0022] Figure 4 It is a schematic diagram of the push component structure;

[0023] Figure 5 A schematic diagram of the structure of this application is shown;

[0024] Figure 6 It is a schematic diagram of the matching structure of the core rod and the sleeve rod;

[0025] Figure 7 The structure of the present application with a core rod and a sleeve rod is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below. The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] A device for adding block alloys to an AOD furnace includes a pushing component, a slag-blocking heat-insulating wall 4, and a supporting component. The pushing component includes a push rod 1, a supporting claw 2 provided at the front end of the push rod, and a turning handle 3 provided at the rear end of the push rod. The supporting component includes a supporting hook 5 and a support rod 6 provided outside a feeding port 41 of the slag-blocking heat-insulating wall. Both ends of the support rod are mounted on the supporting hook, and the support rod is straddled outside the feeding port. The supporting claw includes a sliding rod portion 21 coaxial or parallel to the push rod and a plurality of limiting claw portions 22 supported on both sides of the sliding rod portion. The bottom end of the sliding rod portion is lower than the bottom end of the limiting claw portion. The bottom end of the limiting claw portion is vertically arranged relative to the push rod, that is, horizontally arranged. The above-mentioned high and low position setting ensures that the limiting claw portion will not hit the support rod, thereby ensuring a smooth pushing process.

[0029] The present application sets a slag-blocking insulation wall outside the furnace mouth of the AOD furnace, and opens a feeding port on the slag-blocking insulation wall, so that it can have both heat insulation effect and certain slag-blocking effect to a certain extent. Then, a supporting component is set on the feeding port to support the front end of the pushing component. The specific staff can lift the push rod, and then put the supporting claw part of the front end of the push rod on the support rod, and then let other staff put the alloy block on the supporting claw. After the placement is completed, the operating staff stands at the far end away from the feeding port and pushes the push rod forward to push the supporting claw into the feeding port. After pushing it into place, the push rod is rotated to put the block alloy on the supporting hook into the furnace of the AOD. Thereby, it can have a good heat insulation effect, and at the same time prevent the splashing slag from injuring the staff. Compared with the existing personnel feeding by hand, the labor intensity of the workers is greatly reduced. And the device structure of the present application is simple, relatively clever, low cost, easy to operate, and improves work efficiency. It can be used on site for flexible use and small size.

[0030] Embodiment 2:

[0031] The difference from the above embodiment is that the support rod is a rotatable round stick rod, and at least one support rod is arranged in the support hook. The support rod is a round stick rod, which can reduce friction when the pushing component pushes, thereby reducing the work intensity.

[0032] Embodiment three:

[0033] The difference from the above embodiment is that the feeding port is provided with two groups of upper and lower support hooks, and the gap between the hook opening of the lower support hook and the bottom of the upper support hook is smaller than the narrowest spacing of the cross section of the support rod. The support rod can be selectively set on the high or low support hook according to the height, habits of the workers and the size of the materials, and the height is adjustable, which is flexible and convenient. The hook opening of the most used support hook located at the bottom is smaller than the rod diameter of the support rod, so that the support rod can only be inserted into the lower support hook from the side end, so that the support rod can be accidentally disengaged or accidentally brought out by force, and the necessary stability can be guaranteed in a very simple case.

[0034] Embodiment 4:

[0035] The difference from the above embodiment is that an anti-slip component is also provided between the slag-blocking heat insulation wall and the support rod, and the anti-slip component includes a triangular wedge plate 7, and a limit hook 8 is provided at the bottom of the front end of the push rod. In order to ensure the convenience and flexibility of the installation of the support rod, the hook groove of the support hook should be larger than the support rod, so that it is convenient to plug and unplug. However, during use, the support rod will not fit tightly enough with the support hook, which will cause unnecessary movement or sliding of the support rod. Therefore, the present application is also equipped with a wedge plate. When the support rod is inserted on the support hook, the wedge plate can be inserted into the gap between the support rod and the slag-blocking heat insulation wall, so that the support rod can be quickly and conveniently limited to prevent it from moving in the horizontal direction and gravity direction. Since the contact surface between the plate-shaped wedge plate and the support rod is narrow, the friction is small, and it can limit its movement while ensuring that it can still rotate, thereby improving stability and ensuring work efficiency. The limit hook set at the bottom of the front end of the push rod can help the staff to quickly and stably put the push rod on the support rod. After the limit hook hooks the support rod, the entire push rod is not easy to slip off, and it can be quickly positioned and easy to operate, reducing accidents while reducing the labor intensity of workers.

[0036] Embodiment five:

[0037] The difference from the above embodiment is that the anti-slipping component includes two wedge plates, and one end of the two wedge plates, the tip at the lower end and the horizontal bottom end at the upper end, is directly connected, and the other end is connected through a connecting plate 71. When a single-plate wedge plate is used, the wedge plate is relatively narrow, and once the wedge plate is rotated, it will fall from the clamping position. The present application adopts a method of connecting two wedge plates to form a three-dimensional wedge plate structure, thereby greatly improving the stability of the wedge plate. The wedge plate can be a long right-angle plate, and the thinnest tips of the two wedge plates are connected so that the lower end of the insertion can be easily and quickly inserted into the gap between the support rod and the slag insulation wall. The three-dimensional conical structure formed by the connection of the two wedge plates has high strength and good stability. The side edges of the two wedge plates are pressed on the support rod at the same time, which has a better effect on preventing the support rod from slipping and shifting.

[0038] Embodiment six:

[0039] The difference from the above embodiment is that the wedge plate is provided with a mounting ear 72 on the outer side facing away from the slag blocking and heat insulation wall, and a mounting opening 73 that can be mounted on the support rod is formed between the mounting ear and the wedge plate. The arrangement of the mounting ear can further improve the stability of the support rod and the wedge plate, especially when two support rods are arranged in the same support hook, the mounting ear can hold the support rod in the mounting opening, and at the same time ensure that the wedge plate is installed more stably to prevent accidental falling.

[0040] Embodiment seven:

[0041] The difference from the above embodiment is that the push rod includes a core rod 11 and a sleeve rod 12, the supporting claw is connected to the core rod, the sliding rod portion is formed by the core rod extending forward, and the top of the sleeve rod front end is hollowed out to form a top hollow 124 for exposing a part of the core rod for connection with the limiting claw portion. The sleeve rod and the core rod can slide axially. Through the arrangement of the core rod and the sleeve rod, the supporting claw can be further away from the feeding port for loading before the alloy block is placed. At this time, the sleeve rod is mainly supported on the support rod, and the core rod is pulled away from the feeding port along the sleeve rod. Therefore, when the worker places the alloy block on the supporting claw, he can be far away from the feeding port, so that it is safer to place the alloy block and the heat is lower than before. After the alloy block is placed, the sleeve rod is stabilized and the core rod is pushed forward along the sleeve rod. After being pushed into place, the core rod is pushed forward together with the sleeve rod or the core rod alone continues to be pushed forward into the feeding port, which is convenient and safe to operate.

[0042] Embodiment eight:

[0043] The difference from the above embodiment is that the limiting claws on the same side are also connected to the bottom connecting plate 221, and / or the bottom of the front end of the sleeve rod is provided with an anti-deflection plate 122. The bottom connecting plate is provided to increase the bottom supporting surface of the supporting claw on the one hand, and on the other hand, when the supporting claw is not sent into the feeding port but the alloy block has been placed, and because of the remote grip push rod, once the supporting claw is loaded and rotated, it may also cause the alloy block to fall before being put into the furnace. The present application adopts the setting of the bottom connecting plate, which can be against the support rod when deflected to prevent deflection. In addition, the anti-deflection plate can be provided at the front end of the sleeve rod, so that there is a plane support between the sleeve rod and the support rod, so that it is not easy to twist. Because the irregular shape of the alloy block, the supporting claw should not be made into a fully sealed structure, so that the gripping force for the irregular block is insufficient and the alloy block will be too high and easy to shake and fall. Because it is made into a hollow claw shape and equipped with an appropriate narrow bottom connecting plate.

[0044] Embodiment nine:

[0045] The difference from the above embodiment is that the front end of the sleeve rod is provided with a sealing end 121 for abutting against the front end of the core rod, and the rear bottom of the sleeve rod is hollowed out. The rear bottom of the sleeve rod can be appropriately hollowed out to form a bottom hollow 123, which reduces the dead weight and reduces the friction of the core rod when it slides along the sleeve rod. The core rod and the rear end of the sleeve rod are both provided with a turning handle. When designing, the rear ends of the turning handle of the sleeve rod can be extended to the direction of the turning handle of the core rod to design a limiting column 31, so that there is a limiting gap between the core rod and the turning handle of the sleeve rod, which changes the traditional round handle that is easy to slip out of the hand and not easy to be laborious, can ensure more stable grip, and can prevent pinching of the hand. When the front end of the core rod is against the sealing end, the turning on the core rod also simultaneously abuts against the rear side of the turning handle of the sleeve rod. Through the design of the sealing end, the core rod can be pushed to the sealing end and connected to the sleeve rod to feed the alloy block into the feeding port, thereby shortening the sliding distance of the core rod relative to the sleeve rod, ensuring that the pushing is relatively labor-saving, and protecting the core rod. In addition, it also prevents the relative sliding distance between the core rod and the sleeve rod from being too long, which makes it difficult for remote workers to control. The pushing is also more stable, and it is more convenient for workers to hold and push. When the core rod and the sleeve rod are completely overlapped, the worker can grasp the two handles at the same time for easy operation.

[0046] Embodiment ten:

[0047] The difference from the above embodiment is that a limit hook 8 is provided at the bottom of the front end of the sleeve rod, the cross section of the front end inner cavity of the sleeve rod is triangular or irregular, and at least the front end of the core rod is adapted to the triangular or irregular shape of the front end of the sleeve rod. The inner cavity is not a traditional circle, but a triangle or irregular shape to prevent the core rod from deflecting when sliding relative to the sleeve rod, thereby ensuring that the alloy block is stably placed on it. The irregular shape can be a waist shape, a circular shape with a convex shape, or a regular ellipse or square shape, as long as the core rod and the sleeve rod are prevented from rotating relative to each other. Because the center of gravity of the alloy block will deviate from the center position when placing the alloy block and after placing it, the staff at the far end who controls the push rod will obviously feel a large deflection force, and at this time, it is necessary to use force to balance this deflection force to prevent the alloy block from falling. The present application not only prevents the core rod from rotating in the cooperation between the core rod and the sleeve rod, but also can set a bottom connecting plate 221 and / or an anti-deflection plate 122 as above to prevent the entire push rod from deflecting from the outside.

[0048] Embodiment eleven:

[0049] The difference from the above embodiment is that the slide bar portion can be integrally connected with the limit claw portion during design, and a relatively narrow bottom connecting plate 221 is symmetrically arranged on both sides of the slide bar portion, and the bottom connecting plate is connected between the limit claw portions 22 on the same side, and the rear end of the bottom connecting plate extends backward beyond the limit claw portion located at the rear end, and the length of the bottom connecting plate beyond the limit claw portion located at the rear end is greater than the distance from the support rod to the limit claw portion after being sent to the feeding port for deflection and feeding position, and the bottom end of the bottom connecting plate is higher than the bottom end of the slide bar portion. In this way, the bottom connecting plate can be timely pressed against the support rod to prevent the support claw from deflecting during the process of sending the support claw into the feeding port, and can also play a good role in grasping and supporting alloy blocks of various sizes. The rear ends of the other two suspended bottom connecting plates can also be connected to the push rod through some connecting rods.

[0050] The present application sets a slag-blocking insulation wall outside the furnace mouth of the AOD furnace, and opens a feeding port on the slag-blocking insulation wall, so that it can have both heat insulation effect and certain slag-blocking effect to a certain extent. Then, a supporting component is set on the feeding port to support the front end of the pushing component. The specific staff can lift the push rod, and then put the supporting claw part of the front end of the push rod on the support rod, and then let other staff put the alloy block on the supporting claw. After the placement is completed, the operating staff stands at the far end away from the feeding port and pushes the push rod forward to push the supporting claw into the feeding port. After pushing it into place, the push rod is rotated to put the block alloy on the supporting hook into the furnace of the AOD. Thereby, it can have a good heat insulation effect, and at the same time prevent the splashing slag from injuring the staff. Compared with the existing personnel feeding by hand, the labor intensity of the workers is greatly reduced. And the device structure of the present application is simple, relatively clever, low cost, easy to operate, and improves work efficiency. It can be used on site for flexible use and small size.

Claims

1. An AOD furnace adding bulk alloy device, characterized in that: It comprises a pushing component, a slag-blocking insulation wall (4) and a supporting component, wherein the pushing component comprises a pushing rod (1), a supporting claw (2) arranged at the front end of the pushing rod and a turning handle (3) arranged at the rear end of the pushing rod, the supporting component comprises a supporting hook (5) and a supporting rod (6) arranged at the outside of a feeding port (41) of the slag-blocking insulation wall, the two ends of the supporting rod are mounted on the supporting hook, and the supporting rod is straddled outside the feeding port, the supporting claw comprises a sliding rod portion (21) coaxial or parallel to the pushing rod and a plurality of limiting claw portions (22) supported on both sides of the sliding rod portion, and the bottom end of the sliding rod portion is lower than the bottom end of the limiting claw portion.

2. The device for adding bulk alloy to an AOD furnace according to claim 1, characterized in that: The support rod is a rotatable round stick rod, and at least one support rod is arranged in the supporting hook.

3. The device for adding bulk alloy to an AOD furnace according to claim 1, characterized in that: The feeding port is provided with two groups of upper and lower supporting hooks, and the gap between the hook opening of the lower supporting hook and the bottom of the upper supporting hook is smaller than the narrowest spacing of the cross section of the support rod.

4. The device for adding bulk alloy to an AOD furnace according to claim 1, characterized in that: An anti-slip component is also arranged between the slag-blocking heat-insulating wall and the support rod, and the anti-slip component comprises a triangular wedge plate (7). A limiting hook (8) is arranged at the bottom of the front end of the push rod.

5. The device for adding bulk alloy to an AOD furnace according to claim 4, characterized in that: The anti-slip component comprises two wedge plates, and one end of the tip portion located at the lower end and the horizontal bottom end located at the upper end of the two wedge plates is directly connected, and the other end is connected through a connecting plate (71).

6. The device for adding bulk alloy to an AOD furnace according to claim 5, characterized in that: The wedge plate is provided with a mounting ear (72) on the outer side facing away from the slag blocking heat insulation wall, and a mounting opening (73) that can be mounted on the support rod is formed between the mounting ear and the wedge plate.

7. The device for adding bulk alloy to an AOD furnace according to claim 1, characterized in that: The push rod comprises a core rod (11) and a sleeve rod (12), the supporting claw is connected to the core rod, the sliding rod portion is formed by the core rod extending forward, and the sleeve rod and the core rod can slide in phase along the axial direction.

8. The device for adding bulk alloy to an AOD furnace according to claim 7, characterized in that: The limiting claws located on the same side are also connected to a bottom connecting plate (221), and / or an anti-deflection plate (122) is provided at the bottom of the front end of the sleeve rod.

9. The device for adding bulk alloy to an AOD furnace according to claim 7, characterized in that: The front end of the sleeve rod is provided with a sealing end portion (121) for abutting against the front end of the core rod, the rear bottom of the sleeve rod is hollowed out, the core rod and the rear end of the sleeve rod are both provided with a turning handle, and when the front end of the core rod abuts against the sealing end portion, the turning handle on the core rod also abuts against the rear side of the turning handle of the sleeve rod.

10. The device for adding bulk alloy to an AOD furnace according to claim 7, characterized in that: A limiting hook (8) is provided at the bottom of the front end of the sleeve rod. The cross section of the inner cavity at the front end of the sleeve rod is triangular or irregular in shape. At least the front end of the core rod is adapted to the triangular or irregular shape of the front end of the sleeve rod.

11. The device for adding bulk alloy to an AOD furnace according to claim 1, characterized in that: A relatively narrow bottom connecting plate (221) is symmetrically arranged on both sides of the sliding rod part, and the bottom connecting plate is connected between the limiting claw parts (22) on the same side. The rear end of the bottom connecting plate extends backward beyond the limiting claw part located at the rear end, and the length of the bottom connecting plate exceeding the limiting claw part located at the rear end is greater than the distance from the support rod to the limiting claw part after being sent into the feeding port for deflection to the feeding position, and the bottom end of the bottom connecting plate is higher than the bottom end of the sliding rod part.

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