Blanking protection device of LF (ladle furnace)

Abstract

The utility model relates to the technical field of LF refining furnaces, and provides an LF refining furnace blanking protection device which comprises a smelting furnace body, a furnace cover is arranged at the top of the smelting furnace body, a supporting plate is fixedly connected to the middle of the top of the furnace cover, a material storage barrel is fixedly connected to one side of the top of the furnace cover, a blanking opening is fixedly connected to the upper portion of the material storage barrel, and the blanking opening is fixedly connected to the lower portion of the furnace cover. A material blocking assembly is arranged on one side of the material storage barrel, and a mounting plate is fixedly connected to one side of the material storage barrel. According to the blanking protection device for the LF refining furnace, the material blocking assembly is matched with the hydraulic cylinder, the cover plate and the convex plate, so that raw materials can be stored while the material storage barrel is closed, hot air is prevented from overflowing in the feeding process, the positive pressure in the furnace is maintained, and the steelmaking quality is guaranteed; and raw materials above the baffle can be preheated, the utilization efficiency of heat is improved, meanwhile, the production rate is increased, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of LF refining furnace technology, and in particular to an LF refining furnace feeding protection device. Background Technology

[0002] The LF (Ladle Furnace) furnace is a refining equipment developed in Japan in the early 1970s. Due to its simple equipment, low investment cost, flexible operation, and good refining effect, it has become a rising star in the metallurgical industry and has been widely used and developed worldwide. As a highly efficient secondary refining method, the LF ladle furnace uses electric arc heating, reducing slag formation, and bottom blowing argon agitation to achieve rapid desulfurization, uniform steel composition and temperature, and effective removal of inclusions in steel, playing a significant role in the smelting of pure steel.

[0003] However, in the existing technology, at least the following technical problems have been found: the existing refining furnace cannot effectively prevent flue gas from rising and overflowing while feeding material. In addition, it cannot effectively utilize heat to preheat the material at the feeding port, and its practicality is not high. Therefore, we provide an LF refining furnace feeding protection device. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a feeding protection device for an LF refining furnace, which solves the technical problems that existing refining furnaces cannot effectively ensure feeding while preventing flue gas from rising and overflowing, and cannot effectively utilize heat to preheat the material at the feeding port, resulting in low practicality.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The furnace body has a furnace cover on its top, a support plate fixedly connected to the middle of the top of the furnace cover, a storage cylinder fixedly connected to one side of the top of the furnace cover, a discharge port fixedly connected above the storage cylinder, a baffle assembly on one side of the storage cylinder, and an installation plate fixedly connected to one side of the storage cylinder.

[0009] Preferably, a hydraulic cylinder is fixedly connected to the top of the support plate, and a cover plate is fixedly connected to the movable end of the hydraulic cylinder. By adopting the above technical solution, the hydraulic cylinder is opened to drive the cover plate to move downward until the convex plate is completely inserted into the interior of the discharge port, thereby completing the closure of the discharge port.

[0010] Preferably, a protruding plate is fixedly connected to the lower surface of the cover plate, and by adopting the above technical solution, the discharge port can be completely sealed.

[0011] Preferably, the baffle assembly includes a drive motor, which is fixedly mounted on the surface of the mounting plate. A worm gear is fixedly connected to the output end of the drive motor, a worm wheel is meshed with one side of the worm gear, and a screw is fixedly connected to one end of the worm wheel. A baffle is threadedly connected to the surface of the screw. By adopting the above technical solution, when the drive motor is turned on, the drive motor drives the worm gear to rotate, the worm gear drives the worm wheel to rotate, and the worm wheel drives the screw to rotate. Under the constraint of the baffle storage cylinder, the baffle moves towards the slot and enters the slot, which can effectively prevent hot gas in the furnace from overflowing from the storage cylinder. When the hydraulic cylinder is turned on, the cover plate and the convex plate move upward, allowing raw materials to be added into the lower feed port. The added raw materials are temporarily stored above the baffle inside the storage cylinder.

[0012] Preferably, a baffle is attached to one side of the storage cylinder, and a groove is provided on the inner wall of the storage cylinder. By adopting the above technical solution, hot gas inside the furnace can be prevented from escaping.

[0013] Preferably, the inner wall of the furnace body is provided with a connecting pipe, and a switch valve is provided in the middle of the connecting pipe. By adopting the above technical solution, when the switch valve is opened, the hot air inside the furnace enters the feed port through the connecting pipe to preheat the raw material above the baffle, thereby improving the heat utilization efficiency and increasing the production rate.

[0014] (III) Beneficial Effects

[0015] This invention employs a baffle assembly, which, under the action of a drive motor, worm gear, worm wheel, screw, baffle, and slot, in conjunction with a hydraulic cylinder, cover plate, and convex plate, can seal the storage cylinder while storing the raw material, preventing hot gas from escaping during the feeding process, maintaining positive pressure inside the furnace, and ensuring steelmaking quality. Furthermore, by using connecting pipes and switching valves, the raw material above the baffle can be preheated, improving heat utilization efficiency, increasing production rate, and enhancing the practicality of the device. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following describes the preferred examples of this utility model in detail with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0018] Figure 2 This is a top view of the structure in an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of the material-blocking assembly in an embodiment of this utility model;

[0020] Figure 4 This is a partial structural diagram of the feeding part in an embodiment of this utility model.

[0021] Legend: 1. Furnace body; 101. Furnace cover; 102. Support plate; 2. Hydraulic cylinder; 21. Cover plate; 22. Protruding plate; 3. Feed port; 31. Storage cylinder; 32. Mounting plate; 4. Material blocking assembly; 41. Drive motor; 42. Worm gear; 43. Worm wheel; 44. Screw; 45. Baffle; 46. Slot; 5. Connecting pipe; 51. Switch valve. Detailed Implementation

[0022] This application provides a material feeding protection device for an LF refining furnace. This invention employs a baffle assembly, which, under the action of a drive motor, worm gear, worm wheel, screw, baffle, and slot, in conjunction with a hydraulic cylinder, cover plate, and convex plate, can seal the storage cylinder while storing the raw material. This prevents hot gas from escaping during the feeding process, maintains positive pressure inside the furnace, and ensures steelmaking quality. Furthermore, by using a connecting pipe and switching valves, the raw material above the baffle can be preheated, improving heat utilization efficiency and production rate, thus enhancing the practicality of the device.

[0023] Example 1

[0024] The technical solution in this application embodiment effectively solves the problems of existing refining furnaces that cannot effectively ensure material feeding while preventing flue gas from rising and overflowing, and that they cannot effectively utilize heat to preheat the material at the feeding port, resulting in low practicality. The overall idea is as follows:

[0025] To address the problems existing in the prior art, this utility model provides a material feeding protection device for an LF refining furnace, including a furnace body 1, a furnace cover 101 on the top of the furnace body 1, a support plate 102 fixedly connected to the middle of the top of the furnace cover 101, a storage cylinder 31 fixedly connected to one side of the top of the furnace cover 101, a material discharge port 3 fixedly connected above the storage cylinder 31, a material blocking component 4 on one side of the storage cylinder 31, and an installation plate 32 fixedly connected to one side of the storage cylinder 31.

[0026] In some embodiments, a hydraulic cylinder 2 is fixedly connected to the top of the support plate 102, a cover plate 21 is fixedly connected to the movable end of the hydraulic cylinder 2, and a protruding plate 22 is fixedly connected to the lower surface of the cover plate 21. Figures 1-4 As shown, the hydraulic cylinder 2 is activated to move the cover plate 21 downwards until the protruding plate 22 is completely inside the discharge port 3, thus completing the closure of the discharge port 3.

[0027] In practical implementation, when using this utility model, firstly, the drive motor 41 is turned on, which drives the worm gear 42 to rotate, the worm gear 42 drives the worm wheel 43 to rotate, and the worm wheel 43 drives the screw 44 to rotate. Under the restriction of the baffle 45 and the storage cylinder 31, the screw 44 moves towards the slot 46 and enters the interior of the slot 46, which can effectively prevent the hot gas in the furnace from overflowing from the storage cylinder 31. Then, the hydraulic cylinder 2 is turned on to drive the cover plate 21 and the protruding plate 22 to move upward, so that raw materials can be added into the lower feed port 3. The added raw materials are temporarily stored above the baffle 45 inside the storage cylinder 31. The hydraulic cylinder 2 is turned on to drive the... The cover plate 21 moves downward until the convex plate 22 is completely inside the feed port 3, thus sealing the feed port 3. The switch valve 51 is opened, and the hot gas inside the furnace enters the feed port 3 through the connecting pipe 5 to preheat the raw material above the baffle 45, improving the heat utilization efficiency and increasing the production rate. After preheating, the switch valve 51 is closed, and the drive motor 41 is turned on to drive the screw 44 to reverse, causing the baffle 45 to disengage from the slot 46. At this time, the raw material above the baffle 45 falls into the furnace, which completes the feeding process and prevents the hot gas inside the furnace from overflowing during the feeding process.

[0028] Example 2

[0029] Based on Example 1, this application presents a feasible material-blocking component technical solution for a material feeding protection device for an LF refining furnace. The overall concept is as follows:

[0030] In some embodiments, the material blocking assembly 4 includes a drive motor 41, which is fixedly mounted on the surface of the mounting plate 32. A worm gear 42 is fixedly connected to the output end of the drive motor 41. A worm wheel 43 is meshed with one side of the worm gear 42. A screw 44 is fixedly connected to one end of the worm wheel 43. A baffle 45 is threaded onto the surface of the screw 44. One end of the screw 44 is rotatably connected to the storage cylinder 31 via a bearing. The baffle 45 is engaged with one side of the storage cylinder 31. A groove 46 is formed on the inner wall of the storage cylinder 31. Figures 1 to 4 As shown, first, the drive motor 41 is turned on, which drives the worm gear 42 to rotate. The worm gear 42 drives the worm wheel 43 to rotate, and the worm wheel 43 drives the screw 44 to rotate. Under the constraint of the storage cylinder 31, the baffle 45 moves towards the slot 46 and enters the interior of the slot 46, which can effectively prevent the hot gas in the furnace from overflowing from the storage cylinder 31. Then, the drive motor 41 is turned on to drive the screw 44 to reverse, so that the baffle 45 disengages from the slot 46. At this time, the raw material above the baffle 45 falls into the furnace, which can complete the feeding process and prevent the hot gas in the furnace from overflowing during the feeding process.

[0031] Example 3

[0032] Based on Example 1, this application presents a feasible technical solution for a feeding protection device for an LF refining furnace. The overall concept is as follows:

[0033] In some embodiments, a connecting pipe 5 is provided on the inner wall of the furnace body 1, and a switch valve 51 is provided in the middle of the connecting pipe 5. One end of the connecting pipe 5 is connected to the interior of the furnace body 1, and the other end of the connecting pipe 5 is connected to the interior of the feeding port 3. Figures 1 to 4 As shown, when the switch valve 51 is turned on, the hot gas inside the furnace enters the feed port 3 through the connecting pipe 5, preheating the raw material above the baffle 45, thereby improving the heat utilization efficiency and increasing the production rate.

[0034] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A charging protection device for an LF refining furnace, comprising a furnace body (1), characterized in that: The furnace body (1) is provided with a furnace cover (101) on the top. A support plate (102) is fixedly connected to the middle of the top of the furnace cover (101). A storage cylinder (31) is fixedly connected to one side of the top of the furnace cover (101). A discharge port (3) is fixedly connected above the storage cylinder (31). A baffle assembly (4) is provided on one side of the storage cylinder (31). An installation plate (32) is fixedly connected to one side of the storage cylinder (31).

2. The LF refining furnace feeding protection device as described in claim 1, characterized in that: A hydraulic cylinder (2) is fixedly connected to the top of the support plate (102), and a cover plate (21) is fixedly connected to the movable end of the hydraulic cylinder (2).

3. The LF refining furnace feeding protection device as described in claim 2, characterized in that: A protruding plate (22) is fixedly connected to the lower surface of the cover plate (21).

4. The LF refining furnace feeding protection device as described in claim 1, characterized in that: The baffle assembly (4) includes a drive motor (41), which is fixedly mounted on the surface of the mounting plate (32). The output end of the drive motor (41) is fixedly connected to a worm (42), and a worm wheel (43) is meshed on one side of the worm (42). A screw (44) is fixedly connected to one end of the worm wheel (43), and a baffle (45) is threaded onto the surface of the screw (44).

5. The LF refining furnace feeding protection device as described in claim 4, characterized in that: One end of the screw (44) is rotatably connected to the storage cylinder (31) via a bearing.

6. The LF refining furnace feeding protection device as described in claim 5, characterized in that: A baffle (45) is attached to one side of the storage cylinder (31), and a slot (46) is provided on the inner wall of the storage cylinder (31).

7. The LF refining furnace feeding protection device as described in claim 1, characterized in that: The inner wall of the furnace body (1) is provided with a connecting pipe (5), and a switch valve (51) is provided in the middle of the connecting pipe (5).

8. The LF refining furnace feeding protection device as described in claim 7, characterized in that: One end of the connecting pipe (5) is connected to the interior of the furnace body (1), and the other end of the connecting pipe (5) is connected to the interior of the feeding port (3).

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