A rapid sealing structure for blast furnace taphole

Abstract

This utility model relates to the field of blast furnace technology, and in particular to a rapid sealing structure for blast furnace tapholes. It includes a blast furnace with a sealing mechanism at its front. The sealing mechanism includes an mounting plate, a structural plate, a rotating column rotatably mounted on the front of the mounting plate, an electric push rod fixedly mounted on the side of the rotating column, a bearing fixedly mounted on the front of the structural plate, a rotating shaft fixedly mounted inside the bearing, a docking seat fixedly mounted at the front end of the rotating shaft, and valve plates and counterweight plates symmetrically fixedly connected to the upper and lower sides of the docking seat. A graphite ring is screwed onto the inner side of the valve plate, and the valve plate is made of high-polymer ceramic material. This utility model, through its sealing mechanism, maintains the airtightness of the molten iron outlet. Furthermore, the valve plate is driven by an electric push rod, making closing and opening very quick. It is electrically controlled via a remote switch, eliminating the need for close-range manual operation and ensuring safety.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace technology, and in particular to a rapid sealing structure for blast furnace tapholes. Background Technology

[0002] In the continuous production process of blast furnace ironmaking, rapid and effective sealing of the taphole is crucial. Traditional taphole sealing methods, such as using mud guns to press refractory mud into the taphole channel, face many challenges in actual operation.

[0003] When the mud gun malfunctions, it cannot seal the taphole in time, and the blast furnace needs to be switched to atmospheric pressure or even shut down. This not only interrupts production and causes huge economic losses, but also poses a serious threat to the safety of workers. In addition, manual taphole sealing is extremely labor-intensive. Furthermore, during the tapping process, due to high temperature, high pressure and the scouring of slag and iron, the mud sleeve of the taphole is easily burned and deformed, and the mud gun nozzle is often damaged due to prolonged contact with slag and iron. This leads to mud overflow, pressure loss, or even failure to seal the taphole, affecting the taphole depth and the tapping of iron into the furnace. In severe cases, it endangers the safety of the blast furnace.

[0004] To address the shortcomings of the aforementioned technologies, we propose a rapid sealing structure for blast furnace tapholes. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rapid sealing structure for blast furnace tapholes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rapid sealing structure for a blast furnace taphole includes a blast furnace, with a sealing mechanism located on the front side of the blast furnace. The sealing mechanism includes an mounting plate, a structural plate, a rotating column rotatably mounted on the front side of the mounting plate, an electric push rod fixedly mounted on the side of the rotating column, a bearing fixedly mounted on the front side of the structural plate, a rotating shaft fixedly mounted inside the bearing, a docking seat fixedly mounted at the front end of the rotating shaft, a valve plate and a counterweight plate symmetrically fixedly connected to the upper and lower sides of the docking seat, a graphite ring screwed onto the inner side of the valve plate, and the valve plate being made of high-molecular ceramic material.

[0008] Furthermore, the graphite ring is provided with recessed threaded holes evenly distributed on it.

[0009] Furthermore, both the mounting plate and the structural plate are fixedly installed on the front side wall of the blast furnace.

[0010] Furthermore, a control switch is provided on the side of the blast furnace, and a connecting cable is electrically connected between the control switch and the electric push rod.

[0011] Furthermore, a connecting column is rotatably mounted on the front side of the valve plate, and the connecting column is fixedly connected to the output end of the electric push rod.

[0012] Furthermore, an iron outlet is provided on the front side of the blast furnace, and the valve plate abuts against the front side of the iron outlet.

[0013] Furthermore, a connecting pipe is fixedly installed on the upper side of the bearing, and a graphite powder storage tank is fixedly installed at the upper end of the connecting pipe. A sealing cap is screwed onto the top of the graphite powder storage tank.

[0014] Furthermore, the graphite powder storage container is made of transparent glass.

[0015] Compared with related technologies, the rapid sealing structure for blast furnace tapholes proposed in this utility model has the following beneficial effects:

[0016] In this utility model, a rapid sealing structure for blast furnace tapholes is described. The sealing mechanism includes a valve plate made of high-temperature resistant polymer material that seals the front side of the molten iron outlet. This material has high-temperature resistance and will not deform or be damaged when exposed to molten iron. A graphite ring is also provided on the inner side of the valve plate, providing excellent lubrication and sealing. This ensures the valve plate maintains the seal of the molten iron outlet when it is in place. Furthermore, the valve plate is driven by an electric push rod, allowing for quick opening and closing. Remote electric control eliminates the need for close-range manual operation, ensuring safety during use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a rapid sealing structure for a blast furnace taphole proposed in this utility model;

[0018] Figure 2 Schematic diagram of the three-dimensional structure of the sealing mechanism Figure 1 ;

[0019] Figure 3 Schematic diagram of the three-dimensional structure of the sealing mechanism Figure 2 ;

[0020] Figure 4 A three-dimensional structural diagram of some components of the sealing mechanism. Figure 1 ;

[0021] Figure 5 A three-dimensional structural diagram of some components of the sealing mechanism. Figure 2 .

[0022] In the diagram: 1. Blast furnace; 2. Molten iron outlet; 3. Sealing mechanism; 31. Mounting plate; 32. Rotating column; 33. Electric push rod; 34. Connecting cable; 35. Control switch; 36. Structural plate; 37. Bearing; 38. Rotating shaft; 39. Connecting seat; 310. Valve plate; 311. Counterweight plate; 312. Connecting column; 313. Graphite ring; 314. Connecting pipe; 315. Graphite powder storage tank; 316. Sealing cover. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 1-5 A rapid sealing structure for blast furnace tapholes includes a blast furnace 1, with a sealing mechanism 3 installed on the front side of the blast furnace 1. The sealing mechanism 3 includes an mounting plate 31, a structural plate 36, a rotating column 32 rotatably mounted on the front side of the mounting plate 31, an electric push rod 33 fixedly mounted on the side of the rotating column 32, a bearing 37 fixedly mounted on the front side of the structural plate 36, a rotating shaft 38 fixedly mounted inside the bearing 37, a docking seat 39 fixedly mounted at the front end of the rotating shaft 38, a valve plate 310 and a counterweight plate 311 symmetrically fixedly connected on the upper and lower sides of the docking seat 39, a graphite ring 313 screwed onto the inner side of the valve plate 310, a connecting column 312 rotatably mounted on the front side of the valve plate 310, and a fixed connection between the connecting column 312 and the output end of the electric push rod 33. The mounting plate 31 and the structural plate 36 are both fixedly mounted on the front wall of the blast furnace 1, and the valve plate 310 is made of high-molecular ceramic material.

[0025] In this method, the graphite ring 313 is provided with recessed threaded holes evenly distributed on it.

[0026] With the above-mentioned design and the recessed screw hole, the sealing contact surface of the graphite ring 313 after screw installation is continuous and will not be affected by the screw connection point. The screw is made of tungsten steel, which can withstand high temperature. When the graphite ring 313 wears out, it can be disassembled and replaced.

[0027] In this configuration, a control switch 35 is provided on the side of the blast furnace 1, and a connecting cable 34 is electrically connected between the control switch 35 and the electric push rod 33.

[0028] By setting up the connection cable 34 as described above, the control switch 35 can control the working state of the electric push rod 33.

[0029] In this configuration, a molten iron outlet 2 is provided on the front side of the blast furnace 1, a valve plate 310 abuts against the front side of the molten iron outlet 2, a connecting pipe 314 is fixedly installed on the upper side of the bearing 37, a graphite powder storage tank 315 is fixedly installed on the upper end of the connecting pipe 314, a sealing cover 316 is screwed onto the top of the graphite powder storage tank 315, and the graphite powder storage tank 315 is made of transparent glass.

[0030] With the above setup, since the temperature around the blast furnace is relatively high, traditional bearing lubricating oil is difficult to use in this environment and is easily dried out. Therefore, graphite powder lubrication is more suitable for this environment.

[0031] The working principle of the rapid sealing structure for blast furnace taphole provided by this utility model is as follows:

[0032] In use, the mounting plate 31 and the structural plate 36 are both fixed on the front wall of the blast furnace 1, forming the fixed foundation of the sealing mechanism 3. The structural plate 36 is connected to the rotating shaft 38 through the bearing 37. The fixed valve plate 310 (lower side) and the counterweight plate 311 (upper side) on the docking seat 39 at the front end of the rotating shaft 38 form a lever structure that can rotate around the bearing 37. The counterweight plate 311 can balance the overall symmetry of the structure and improve the driving stability. When it is necessary to close the molten iron outlet 2, the electric push rod 33 is activated by the control switch 35 on the side of the blast furnace 1 (via the connecting cable 34). The output end of the electric push rod 33 pulls the valve plate 310 through the connecting column 312, causing the valve plate 310 to rotate around the rotating shaft 38 (relying on the bearing 37) and finally abut against the front side of the molten iron outlet 2 to complete the closure. When it is necessary to open the molten iron outlet 2, the control switch 35 controls the electric push rod 33 to retract, and the output end pushes the valve plate 310 to rotate around the rotating shaft 38, passing the molten iron outlet 2 to realize the opening.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A quick closing structure of a blast furnace taphole, characterized by, Includes a blast furnace (1), and a sealing mechanism (3) is provided on the front side of the blast furnace (1); The sealing mechanism (3) includes a mounting plate (31), a structural plate (36), a rotating column (32) is rotatably mounted on the front side of the mounting plate (31), an electric push rod (33) is fixedly mounted on the side of the rotating column (32), a bearing (37) is fixedly mounted on the front side of the structural plate (36), a rotating shaft (38) is fixedly mounted on the inner side of the bearing (37), a docking seat (39) is fixedly mounted on the front end of the rotating shaft (38), a valve plate (310) and a counterweight plate (311) are symmetrically fixedly connected on the upper and lower sides of the docking seat (39), a graphite ring (313) is screwed onto the inner side of the valve plate (310), and the valve plate (310) is made of polymer ceramic material.

2. The quick closing structure of the iron notch of a blast furnace according to claim 1, characterized in that, The graphite ring (313) is provided with recessed screw holes evenly distributed on it.

3. The quick closing structure of the iron notch of a blast furnace according to claim 1, characterized in that, The mounting plate (31) and the structural plate (36) are both fixedly installed on the front side wall of the blast furnace (1).

4. The quick closing structure of the iron notch of a blast furnace according to claim 1, characterized in that, A control switch (35) is provided on the side of the blast furnace (1), and a connecting cable (34) is electrically connected between the control switch (35) and the electric push rod (33).

5. The quick closing structure of the iron notch of a blast furnace according to claim 1, characterized in that, A connecting column (312) is rotatably mounted on the front side of the valve plate (310), and the connecting column (312) is fixedly connected to the output end of the electric push rod (33).

6. The quick closing structure of the iron notch of a blast furnace according to claim 1, characterized in that, The blast furnace (1) has an iron outlet (2) on the front side, and the valve plate (310) abuts against the front side of the iron outlet (2).

7. The quick closing structure of the iron notch of a blast furnace according to claim 1, characterized in that, A connecting pipe (314) is fixedly installed on the upper side of the bearing (37), and a graphite powder storage tank (315) is fixedly installed on the upper end of the connecting pipe (314). A sealing cap (316) is screwed onto the top of the graphite powder storage tank (315).

8. The quick closing structure of the iron notch of a blast furnace according to claim 7, characterized in that, The graphite powder storage tank (315) is made of transparent glass.

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