Brick steel ladle structure of VOD (Vacuum Oxygen Decarburization) furnace

Abstract

The utility model provides a VOD (Vacuum Oxygen Decarburization) furnace brick steel ladle structure, which relates to the technical field of steel ladle structures and comprises a magnesia carbon fire-resistant heat-insulating layer, a magnesium aluminate spinel fire-resistant layer is arranged in the magnesia carbon fire-resistant heat-insulating layer, and four groups of buffer blocks are fixedly connected to the bottom end in the magnesium aluminate spinel fire-resistant layer. The bottom ends of the four sets of buffer blocks are fixedly connected with two sets of buffer shafts, the bottom ends of the two sets of buffer shafts are fixedly connected to the bottom end of the magnesium aluminate spinel refractory layer, and the middle of the magnesium aluminate spinel refractory layer is fixedly connected with a fixing block. The dust collector can work, smoke generated in the machining process of equipment is collected, the situation that too much smoke influences the construction environment is prevented, and under the action of a fixing block and a screw, the dust collector can be fixed to the bottom of a connecting plate, and the situation that the dust collector falls off in the using process, and consequently follow-up operation is influenced is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ladle structures, in particular to a VOD furnace brick-built ladle structure. Background Art

[0002] VOD method, namely vacuum oxygen decarburization method, is an off-furnace refining method that uses a vacuum device to reduce the CO partial pressure and achieve decarburization. Its specific implementation method is to pour the pre-decarburized molten steel into the VOD ladle, and then hang the ladle into the vacuum tank (chamber) to achieve a closed vacuum state, and complete the refining work under a certain vacuum degree. The VOD ladle mainly smelts stainless steel and some high-chromium and low-carbon varieties of steel, so the requirements for the smelting environment are very high. Because the molten steel temperature is high, the stirring property is strong, and the viscosity of the molten steel after alloying is low, etc., VOD ladle refining has extremely high requirements for refractory materials. It must not only have good thermal insulation properties, but also match the refining process, and be able to withstand the thermal shock brought by the electric arc furnace and the damage of steel slag. The vacuum treatment prolongs the tolerance time of the ladle, and the stirring process also increases the burden of the refractory.

[0003] However, the existing VOD furnace brick-built ladle structure is inconvenient to collect the smoke generated during the production process during use, which is easy to affect the construction environment. In addition, due to the excessive impact force during use, the inner wall of the equipment is easily damaged, resulting in a decrease in the overall use effect. Therefore, it is necessary to propose a new VOD furnace brick-built ladle structure. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problems that it is inconvenient to collect the smoke generated in the production process, which easily affects the construction environment, and during use, due to excessive impact force, it is easy to cause damage to the inner wall of the equipment, resulting in a decrease in the overall use effect.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a VOD furnace brick ladle structure, comprising a magnesium-carbon refractory insulation layer, a magnesium-aluminum spinel refractory layer is installed inside the magnesium-carbon refractory insulation layer, four groups of buffer blocks are fixedly connected to the bottom end of the inner part of the magnesium-aluminum spinel refractory layer, the bottom ends of the four groups of buffer blocks are fixedly connected to two groups of buffer shafts, the bottom ends of the two groups of buffer shafts are fixedly connected to the bottom end of the magnesium-aluminum spinel refractory layer, the middle of the magnesium-aluminum spinel refractory layer is fixedly connected to a fixed block, the top of the fixed block is movably connected to a rotating shaft, the circumferential side of the rotating shaft is fixedly connected to multiple groups of stirring plates, the top of the rotating shaft is movably connected to a connecting block, the circumferential side of the connecting block is fixedly connected to multiple groups of limit shafts, one end of the multiple groups of limit shafts is fixedly connected to the top of the magnesium-aluminum spinel refractory layer.

[0006] Preferably, a guide rod is inserted and connected to the bottom end of the magnesium-aluminum spinel refractory layer, the top end of the guide rod is fixedly connected to the bottom end of the rotating shaft, and the bottom end of the guide rod is fixedly connected to a rotating motor.

[0007] Preferably, a plurality of groups of fixed blocks are fixedly connected to the periphery of the bottom end of the magnesium-carbon refractory heat-insulating layer, and buffer springs are fixedly connected to the bottom ends of the plurality of fixed blocks.

[0008] Preferably, dampers are installed at both ends of the buffer spring, and a load-bearing block is fixedly connected to the bottom end of the buffer spring.

[0009] Preferably, a connecting plate is fixedly connected to the top of the magnesium-carbon refractory heat-insulating layer, and a vacuum cleaner is fixedly connected to the middle of the bottom end of the connecting plate.

[0010] Preferably, both ends of the vacuum cleaner are fixedly connected with fixing blocks, the middle of the fixing blocks is interspersed with screws, and the screws are fixedly connected to the bottom end of the connecting plate.

[0011] Preferably, the top end of the connecting plate is fixedly connected to a cylinder, the delivery end of the cylinder is connected to a delivery pipe, and the delivery pipe is fixedly connected to the top end of the vacuum cleaner.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by providing a delivery pipe, a cylinder, a vacuum cleaner and a fixed block, the vacuum cleaner can be operated under the action of the cylinder and the delivery pipe to collect the smoke generated by the equipment during the processing to prevent excessive smoke from affecting the construction environment, and the vacuum cleaner can be fixed to the bottom of the connecting plate under the action of the fixed block and the screws to prevent the vacuum cleaner from falling off during use and affecting subsequent operations.

[0014] 2. In the utility model, the buffer block, buffer shaft, buffer spring and load-bearing block are arranged in cooperation. The buffer block and buffer shaft can alleviate the impact force generated when the ladle used in the VOD is injected with molten steel, thereby preventing the impact block from being worn out and cracked to reduce its service life. Then, the buffer spring and load-bearing block can be used to improve the anti-seismic effect of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural cross-sectional schematic diagram of a VOD furnace brick ladle structure is proposed for the utility model;

[0016] Figure 2 A three-dimensional structural diagram of a brick-built ladle structure of a VOD furnace is proposed for the utility model;

[0017] Figure 3A three-dimensional top view schematic diagram of a brick-built ladle structure of a VOD furnace is proposed for the utility model;

[0018] Figure 4 The utility model provides a partial structural schematic diagram of a VOD furnace brick ladle structure.

[0019] Legend: 1. Magnesium-carbon refractory insulation layer; 2. Connecting plate; 3. Conveying pipe; 4. Cylinder; 5. Limiting shaft; 6. Connecting block; 7. Stirring plate; 8. Buffer block; 9. Buffer shaft; 10. Buffer spring; 11. Load-bearing block; 12. Vacuum cleaner; 13. Fixed block; 14. Rotating motor; 15. Rotating shaft; 16. Magnesium-aluminum spinel refractory layer. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Example 1

[0023] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a VOD furnace brick ladle structure, comprising a magnesium-carbon refractory insulation layer 1, a magnesium-aluminum spinel refractory layer 16 is installed inside the magnesium-carbon refractory insulation layer 1, four groups of buffer blocks 8 are fixedly connected to the bottom end of the internal magnesium-aluminum spinel refractory layer 16, the bottom ends of the four groups of buffer blocks 8 are fixedly connected to two groups of buffer shafts 9, the bottom ends of the two groups of buffer shafts 9 are fixedly connected to the bottom end of the magnesium-aluminum spinel refractory layer 16, and the middle of the magnesium-aluminum spinel refractory layer 16 is fixedly connected to four corner The top of the limit blocks at the four corners are movably connected with a rotating shaft 15, and the peripheral side of the rotating shaft 15 is fixedly connected with multiple groups of stirring plates 7, the top of the rotating shaft 15 is movably connected with a connecting block 6, and the peripheral side of the connecting block 6 is fixedly connected with multiple groups of limit shafts 5, one end of the multiple groups of limit shafts 5 is fixedly connected to the top inside of the magnesium-aluminum spinel refractory layer 16, and the bottom end of the magnesium-aluminum spinel refractory layer 16 is interspersed with a guide rod, the top end of the guide rod is fixedly connected to the bottom end of the rotating shaft 15, and the bottom end of the guide rod is fixedly connected to a rotating motor 14.

[0024] In this embodiment, by setting the magnesium carbon refractory insulation layer 1 and the magnesium aluminum spinel refractory layer 16, the heat resistance of the overall equipment can be improved, and the use effect of the overall equipment can be further improved. Then, under the action of the buffer block 8 and the buffer shaft 9, the impact force generated by the ladle used by the VOD when injecting molten steel can be prevented, and the impact block can be prevented from being worn and cracked, thereby improving the service life. Then, the rotating motor 14 and the guide rod can be used to control the rotating shaft 15 to perform a rotation operation. During the rotation of the rotating shaft 15, the stirring plate 7 can be synchronously driven to rotate, and then the molten steel used by the VOD is stirred so that the molten steel is heated evenly. Afterwards, with the cooperation of the limit shaft 5 and the connecting block 6, the stirring plate 7 can be prevented from shifting during the operation, which affects the subsequent use effect, and further improves the use effect of the overall equipment.

[0025] Example 2

[0026] like Figure 1-Figure 4 As shown, multiple groups of horizontal plates are fixedly connected around the bottom end of the magnesium-carbon refractory thermal insulation layer 1, and buffer springs 10 are fixedly connected to the bottom ends of the multiple groups of horizontal plates. Dampers are installed at both ends of the buffer springs 10, and load-bearing blocks 11 are fixedly connected to the bottom ends of the buffer springs 10. A connecting plate 2 is fixedly connected to the top of the magnesium-carbon refractory thermal insulation layer 1, and a vacuum cleaner 12 is fixedly connected to the middle of the bottom end of the connecting plate 2. Fixed blocks 13 are fixedly connected to both ends of the vacuum cleaner 12, and screws are inserted in the middle of the fixed block 13, which are fixedly connected to the bottom end of the connecting plate 2, and a cylinder 4 is fixedly connected to the top of the connecting plate 2. The delivery end of the cylinder 4 is connected to a delivery pipe 3, and the delivery pipe 3 is fixedly connected to the top of the vacuum cleaner 12.

[0027] In this embodiment, the buffering effect of the overall equipment can be improved by setting the buffer spring 10 and the damper. Then, the buffer block 8 and the buffer shaft 9 can be used to alleviate the impact force generated by the ladle used by the VOD when the molten steel is injected to prevent the impact block from being worn out and cracking and reducing its service life. Then, the cylinder 4 and the conveying pipe 3 are started to enable the vacuum cleaner 12 to work, and then the smoke generated by the overall equipment is collected to prevent excessive smoke from affecting the construction environment. Under the action of the fixing block 13 and the screws, the vacuum cleaner 12 can be fixed to the bottom of the connecting plate 2 to prevent the vacuum cleaner 12 from falling off during use and affecting subsequent operations.

[0028] The working principle of this embodiment is as follows: first, under the action of the magnesium-carbon refractory insulation layer 1 and the magnesium-aluminum spinel refractory layer 16, the heat release effect of the overall equipment can be improved to prevent the magnesium-carbon refractory insulation layer 1 and the magnesium-aluminum spinel refractory layer 16 from being heated at high temperature, and the surface cracking that affects the subsequent use can be prevented. Then, under the action of the buffer block 8 and the buffer shaft 9, the impact force generated by the ladle used in the VOD when the molten steel is injected can be prevented, and the impact block can be prevented from being worn and cracked, thereby improving the service life. After that, the rotating motor 14 is started to rotate the guide rod and the rotating shaft 15, and the stirring plate 7 is driven to rotate synchronously. The molten steel used by the VOD is then stirred so that the molten steel is heated evenly. After that, with the cooperation of the limit shaft 5 and the connecting block 6, the stirring plate 7 can be prevented from shifting during the operation, which can affect the subsequent use effect, and the use effect of the overall equipment can be further improved. When the cylinder 4 and the conveying pipe 3 are started, the vacuum cleaner 12 can be operated, and then the smoke generated by the overall equipment is collected to prevent excessive smoke from affecting the construction environment. Under the action of the fixing block 13 and the screws, the vacuum cleaner 12 can be fixed to the bottom of the connecting plate 2 to prevent the vacuum cleaner 12 from falling off during use and affecting subsequent operations.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A brick-built ladle structure for a VOD furnace, characterized in that: The invention comprises a magnesium-carbon refractory heat-insulating layer (1), wherein a magnesium-aluminum spinel refractory layer (16) is installed inside the magnesium-carbon refractory heat-insulating layer (1), wherein the internal bottom end of the magnesium-aluminum spinel refractory layer (16) is fixedly connected with four groups of buffer blocks (8), and the bottom ends of the four groups of buffer blocks (8) are fixedly connected with two groups of buffer shafts (9), and the bottom ends of the two groups of buffer shafts (9) are fixedly connected to the bottom end of the magnesium-aluminum spinel refractory layer (16), and the magnesium-aluminum spinel refractory layer (16) is fixedly connected to the bottom end of the magnesium-aluminum spinel refractory layer (16). The middle of the layer (16) is fixedly connected with four corner limit blocks, the top of the four corner limit blocks is movably connected with a rotating shaft (15), the peripheral side of the rotating shaft (15) is fixedly connected with multiple groups of stirring plates (7), the top of the rotating shaft (15) is movably connected with a connecting block (6), the peripheral side of the connecting block (6) is fixedly connected with multiple groups of limit shafts (5), and one end of the multiple groups of limit shafts (5) is fixedly connected to the top of the magnesium-aluminum spinel refractory layer (16).

2. The VOD furnace brick ladle structure according to claim 1, characterized in that: A guide rod is inserted and connected to the bottom end of the magnesium-aluminum spinel refractory layer (16), the top end of the guide rod is fixedly connected to the bottom end of the rotating shaft (15), and the bottom end of the guide rod is fixedly connected to the rotating motor (14).

3. The VOD furnace brick ladle structure according to claim 2, characterized in that: A plurality of groups of transverse plates are fixedly connected around the bottom end of the magnesium-carbon refractory heat-insulating layer (1), and a buffer spring (10) is fixedly connected to the bottom ends of the plurality of groups of transverse plates.

4. The VOD furnace brick ladle structure according to claim 3, characterized in that: Dampers are installed at both ends of the buffer spring (10), and a load-bearing block (11) is fixedly connected to the bottom end of the buffer spring (10).

5. The VOD furnace brick ladle structure according to claim 4, characterized in that: A connecting plate (2) is fixedly connected to the top of the magnesium-carbon refractory heat-insulating layer (1), and a dust collector (12) is fixedly connected to the middle of the bottom end of the connecting plate (2).

6. The VOD furnace brick ladle structure according to claim 5, characterized in that: Both ends of the vacuum cleaner (12) are fixedly connected with fixing blocks (13), the middle of the fixing block (13) is interspersed with screws, and the screws are fixedly connected to the bottom end of the connecting plate (2).

7. The VOD furnace brick ladle structure according to claim 6, characterized in that: The top end of the connecting plate (2) is fixedly connected to a cylinder (4), the delivery end of the cylinder (4) is connected to a delivery pipe (3), and the delivery pipe (3) is fixedly connected to the top end of the vacuum cleaner (12).

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