Emergency plugging device for discharge outlet of top-blown furnace

Abstract

The utility model relates to an emergency plugging device for a discharge outlet of a top-blown furnace, which comprises a push rod, a protective plate, an air pick joint and a plug, one end of the push rod is fixedly connected with the protective plate, the other end of the push rod is fixedly connected with the air pick joint, the plug is detachably connected onto the protective plate, and various plugs are designed according to different use scenes. According to the utility model, the protective plate is additionally arranged between the plug and the push rod, and various plugs are detachably connected to the protective plate, so that the technical problems of how to effectively block splashed iron slag in the process of pressurizing and blocking the discharge port and how to more effectively block different discharge ports are solved.

Description

Technical Field

[0001] The utility model relates to a plugging device, in particular to an emergency plugging device for a discharge port of a top-blown furnace, and belongs to the field of smelting. Background Art

[0002] In the existing technology, top-blown furnaces are used to reduce and smelt ores, mainly producing alloys such as ferrosilicon, ferromanganese, soldering iron, and ferrotungsten. During the production process, the top-blown furnace needs to discharge slag iron through a discharge port, and after discharge, the discharge port needs to be sealed by a mud gun machine that is compatible with the top-blown furnace.

[0003] However, during use, the mud gun machine malfunctions and the discharge port needs to be sealed by an emergency plugging device. However, the sealing process is a pressurized process and requires manual operation. The molten iron will splash out from the gap between the plugging device and the discharge port. The traditional emergency plugging device cannot effectively block the splashing iron slag, which seriously affects the personal safety of the operator.

[0004] Therefore, how to provide a new emergency plugging device for the discharge port of a top-blown furnace that can effectively block the iron slag splashing during the pressurized plugging process and can replace the plug to meet the plugging needs of discharge ports of different shapes is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model provides an emergency plugging device for the discharge port of a top-blown furnace, aiming to solve the above-mentioned technical problem of how to effectively block the iron slag splashing during the pressurized plugging process.

[0006] An emergency plugging device for a top-blown furnace discharge port, comprising:

[0007] putter;

[0008] a guard plate, wherein a plate surface of the guard plate is perpendicular to the axial direction of the push rod and is fastened to the first end of the push rod, and a mounting groove is formed on a plate surface of the guard plate away from the push rod;

[0009] The plug includes an assembly shaft and a sealing portion for sealing the discharge port, one end of the assembly shaft is coaxial with the center of the bottom of the assembly groove and is detachably connected, and the sealing portion is tightly connected to the other end of the assembly shaft.

[0010] Through the above technical solution, the utility model solves the technical problem of how to effectively block the iron slag splashing during the pressurized sealing process of the discharge port. By adding a guard plate between the plug and the push rod, the safety hazard caused by the splashing of iron slag to the operator is avoided. The assembly shaft of the plug is detachably connected to the whole composed of the guard plate and the push rod, which facilitates the replacement of the plug.

[0011] Preferably, it also includes a jackhammer joint, which is fastened to the second end of the push rod.

[0012] Preferably, the sealing part includes a sealing shaft and sealing yellow mud, the diameter of the sealing shaft is smaller than the diameter of the minimum inscribed circle of the discharge port contour, the first end of the sealing shaft is coaxially arranged with the assembly shaft and tightly connected, the sealing yellow mud is conical and coaxially arranged with the sealing shaft, the diameter of the cone bottom of the sealing yellow mud is larger than the diameter of the maximum circumscribed circle of the discharge port contour and is flush with the first end of the sealing shaft to fill the gap between the sealing shaft and the discharge port.

[0013] Preferably, an outer surface of the sealing shaft in contact with the sealing yellow mud is provided with an anti-slip groove to prevent the sealing yellow mud from falling off.

[0014] Preferably, the sealing portion is a metal cone, which is coaxially arranged with the assembly axis, and the bottom end of the metal cone is fastened to the assembly axis. The bottom diameter of the metal cone is larger than the diameter of the maximum circumscribed circle of the discharge port contour to temporarily seal the discharge port.

[0015] Preferably, the sealing portion includes a shell, a disc, a connecting rod and a refractory material. The shell is cylindrical with one end sealed, and its open end completely covers the maximum outer contour of the discharge port. The sealed end of the shell is provided with a connecting through-hole along its axial direction. The disc is located inside the shell and is coaxially arranged with the shell. The side wall surface of the disc is slidingly connected to the inner wall surface of the shell. The connecting rod is coaxially arranged with the assembly axis and is slidingly connected to the connecting through-hole. One end of the connecting rod is fastened to a plate surface of the disc away from the open end, and the other end is fastened to the assembly axis. The refractory material is filled between the open end of the shell and the disc.

[0016] Preferably, the refractory material is made of yellow mud.

[0017] Preferably, the assembly shaft and the assembly groove are spirally connected.

[0018] Preferably, the guard plate is a circular guard plate, which is coaxially arranged with the first end of the push rod and is tightly connected, and an end surface of the circular guard plate away from the push rod is provided with an assembly groove coaxially arranged with the circular guard plate.

[0019] Preferably, the second end of the push rod is rolled with an anti-slip pattern along its circumferential outer surface for easy gripping.

[0020] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses an emergency plugging device for the discharge port of a top-blown furnace, which has the following beneficial effects:

[0021] 1. The guard plate is tightly connected between the plug and the push rod and is located on the side close to the discharge port. It can timely avoid the safety hazards to the operator caused by the splashing of iron slag during the pressurized sealing process of the discharge port;

[0022] 2. The plug is detachably connected to the guard plate and can be replaced;

[0023] 3. The sealing part includes a sealing shaft and sealing yellow mud. The sealing shaft plays a major role in sealing the discharge port, and the sealing yellow mud seals the gap between the sealing shaft and the discharge port, with a firm and good sealing effect.

[0024] 4. Compared with cylindrical sealing mud, conical sealing mud has stronger adaptability. It will not cause the end of the cylindrical sealing mud to be incompatible with the discharge port, resulting in the entire piece being unable to be sealed. During the sealing process, the conical sealing mud will always have an area that adapts to the size of the discharge port, which makes it more adaptable.

[0025] 5. The outer surface of the sealing shaft in contact with the sealing mud is provided with anti-slip grooves, which can increase the friction force on the outer surface of the sealing shaft and enhance the relative stability between the sealing shaft and the sealing mud;

[0026] 6. The temporary plugging part is a metal cone. The conical surface of the cone can reduce the contact area between the plugging part and the discharge port, making it easier to separate after the temporary plugging is completed;

[0027] 7. It includes a shell, a disc, a connecting rod and a sealing part made of refractory material. The cylindrical shell can cover irregular discharge ports, and the piston-type structure can be filled with refractory material multiple times to seal the discharge ports. It has the characteristics of strong adaptability and can be repeatedly filled and sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of an emergency plugging device for a top-blown furnace discharge port provided by the utility model;

[0029] Figure 2 A structural schematic diagram of the blocking portion provided by the utility model;

[0030] Figure 3 Another structural schematic diagram of the sealing portion provided by the utility model;

[0031] Figure 4 Another structural schematic diagram of the sealing portion provided by the utility model;

[0032] Figure 5 This is a schematic diagram of the operation of an emergency plugging device for a top-blown furnace discharge port provided by the utility model;

[0033] Among them: 1-push rod; 2-guard plate; 3-plug; 4-pneumatic pick joint; 5-pneumatic pick; 6-smelting furnace; 21-assembly groove; 30-sealing part; 31-assembly shaft; 61-discharge port; 321-sealing shaft; 322-sealing yellow mud; 331-metal cone; 341-shell; 342-disc; 343-connecting rod; 344-refractory material. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] See attached Figure 1-5 The embodiment of the utility model discloses an emergency plugging device for a top-blown furnace discharge port, comprising: a push rod 1, a guard plate 2 and a plug 3;

[0036] The surface of the guard plate 2 is perpendicular to the axis direction of the push rod 1 and is fastened to the first end of the push rod 1. A mounting groove 21 is formed on a surface of the guard plate 2 away from the push rod 1.

[0037] The plug 3 includes an assembly shaft 31 and a blocking portion 30 for blocking the discharge port. One end of the assembly shaft 31 is coaxial with the center of the bottom of the assembly groove 21 and is detachably connected. The blocking portion 30 is tightly connected to the other end of the assembly shaft 31 .

[0038] In order to further optimize the above technical solution, a pneumatic pick joint 4 is also included, which is fastened to the second end of the push rod 1.

[0039] In order to further optimize the above technical solution, the sealing part 30 includes a sealing shaft 321 and a sealing yellow mud 322. The diameter of the sealing shaft 321 is smaller than the diameter of the minimum inscribed circle of the discharge port contour. The first end of the sealing shaft 321 is coaxially arranged with the assembly shaft 31 and is tightly connected. The sealing yellow mud 322 is conical and coaxially arranged with the sealing shaft 321. The diameter of the cone bottom of the sealing yellow mud 322 is larger than the diameter of the maximum circumscribed circle of the discharge port contour and is flush with the first end of the sealing shaft 321 to fill the gap between the sealing shaft 321 and the discharge port.

[0040] In order to further optimize the above technical solution, an anti-slip groove is provided on the outer surface of the sealing shaft 321 that contacts the sealing yellow mud 322 to prevent the sealing yellow mud 322 from falling off.

[0041] In order to further optimize the above technical solution, the sealing part 30 is a metal cone 331, which is coaxially arranged with the assembly shaft 31. The bottom end of the metal cone 331 is fastened to the assembly shaft 31, and the bottom diameter of the metal cone 331 is larger than the diameter of the maximum circumscribed circle of the discharge port contour to temporarily seal the discharge port.

[0042] In order to further optimize the above technical solution, the sealing part 30 includes a shell 341, a disc 342, a connecting rod 343 and a refractory material 344. The shell 341 is a cylinder with one end sealed, and its open end completely covers the maximum outer contour of the discharge port. The sealed end of the shell 341 is provided with a connecting hole along its axial direction. The disc 342 is located inside the shell 341 and is coaxially arranged with the shell 341. The side wall surface of the disc 342 is slidingly connected to the inner wall surface of the shell 341. The connecting rod 343 is coaxially arranged with the assembly shaft 31 and is slidingly connected to the connecting hole. One end of the connecting rod 343 is fastened to a plate surface of the disc 342 away from the open end, and the other end is fastened to the assembly shaft 31. The refractory material 344 is filled between the open end of the shell 341 and the disc 342.

[0043] In order to further optimize the above technical solution, the refractory material 344 is made of yellow mud.

[0044] In order to further optimize the above technical solution, the assembly shaft 31 and the assembly groove 21 are spirally connected.

[0045] In order to further optimize the above technical solution, the guard plate 2 is a circular guard plate, which is coaxially arranged and tightly connected to the first end of the push rod 1. An assembly groove 21 coaxially arranged with the circular guard plate is opened on one end face of the circular guard plate away from the push rod 1.

[0046] In order to further optimize the above technical solution, the second end of the push rod 1 is rolled along its circumferential outer surface to have an anti-slip pattern for easy gripping.

[0047] The specific principle and use method of the emergency plugging device for the discharge port of a top-blown furnace provided in this embodiment are as follows:

[0048] 1. Select an appropriate plugging portion 30 according to the shape of the discharge port and the usage scenario;

[0049] 1.1 Temporary blocking: Select the blocking portion 30 of the metal cone 331;

[0050] 1.2 For the sealing of the circular discharge port, a sealing portion 30 including a sealing shaft 321 and sealing yellow mud 322 is selected;

[0051] 1.3 For sealing the irregular discharge port, a sealing portion 30 including a shell 341, a disc 342, a connecting rod 343 and a refractory material 344 is selected;

[0052] 2. Describe the blocking process for the usage scenario described in 1.1 in detail. Set up a temporary fulcrum at the drain outlet 61. Lift the push rod 1, which is equipped with the metal cone 331, onto the temporary fulcrum. Align the center lines of the metal cone 331 and the drain outlet 61. Push the push rod 1 firmly to block the drain outlet 61 with the metal cone 331, temporarily blocking it. When blocking is no longer necessary, strike the metal cone 331 with a hammer to separate it from the drain outlet 61.

[0053] 3. Describe the plugging process for the usage scenario described in 1.2 in detail: Build a temporary fulcrum at the drain port 61, lift the push rod 1 with the plugging portion 30 assembled onto the temporary fulcrum, align the conical sealing mud 322 with the centerline of the drain port 61, push the push rod 1 firmly until the sealing mud 322 blocks the drain port 61, and use a jackhammer 5 connected to the jackhammer connector 4 to apply pressure until the conical sealing mud 322 completely seals the gap between the drain port 61 and the plugging shaft 321. If the jackhammer 5 is unable to apply pressure, manually use a hammer to strike the jackhammer connector 4 to apply pressure until the fluid stops flowing out, then spray water to cool.

[0054] 4. Describe the blocking process of the usage scenario described in 1.3 in detail, set up a temporary fulcrum at the discharge port 61, lift the push rod 1 with the blocking part 30 assembled and place it on the temporary fulcrum, let the cylindrical shell 341 completely cover the outer contour of the discharge port 61, and use the jackhammer 5 to connect the jackhammer joint 4 to pressurize, and completely inject the refractory material 344 in the shell 341 into the discharge port 61. According to the blocking effect, determine whether it is necessary to reload the refractory material 344 for blocking again. If the jackhammer 5 cannot be used for pressurization, manually use a hammer to hit the jackhammer joint 4 to pressurize until the fluid stops flowing out, and then spray water to cool it.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An emergency plugging device for a top-blown furnace discharge port, characterized in that: include: Push rod (1); A guard plate (2), wherein the surface of the guard plate (2) is perpendicular to the axial direction of the push rod (1) and is fastened to the first end of the push rod (1), and a mounting groove (21) is formed on a surface of the guard plate (2) away from the push rod (1); A plug (3) comprising an assembly shaft (31) and a sealing portion (30) for sealing the discharge port, one end of the assembly shaft (31) being coaxial with the center of the bottom of the assembly groove (21) and detachably connected, and the sealing portion (30) being tightly connected to the other end of the assembly shaft (31).

2. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1, characterized in that: It also includes a jackhammer joint (4), which is fastened to the second end of the push rod (1).

3. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1 or 2, characterized in that: The blocking portion (30) includes a blocking shaft (321) and a sealing yellow mud (322). The diameter of the blocking shaft (321) is smaller than the diameter of the minimum inscribed circle of the discharge port outline. The first end of the blocking shaft (321) is coaxially arranged with the assembly shaft (31) and is tightly connected. The sealing yellow mud (322) is conical and coaxially arranged with the blocking shaft (321). The diameter of the cone bottom of the sealing yellow mud (322) is larger than the diameter of the maximum circumscribed circle of the discharge port outline and is flush with the first end of the blocking shaft (321) to fill the gap between the blocking shaft (321) and the discharge port.

4. The emergency plugging device for the discharge port of a top-blown furnace according to claim 3, characterized in that: The outer surface of the blocking shaft (321) in contact with the sealing yellow mud (322) is provided with an anti-slip groove to prevent the sealing yellow mud (322) from falling off.

5. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1 or 2, characterized in that: The blocking portion (30) is a metal cone (331), which is coaxially arranged with the assembly shaft (31). The bottom end of the metal cone (331) is tightly connected to the assembly shaft (31), and the bottom diameter of the metal cone (331) is larger than the diameter of the maximum circumscribed circle of the discharge port outline, so as to temporarily block the discharge port.

6. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1 or 2, characterized in that: The blocking portion (30) includes a shell (341), a disc (342), a connecting rod (343) and a refractory material (344). The shell (341) is cylindrical with one end blocked, and its open end completely covers the maximum outer contour of the discharge port. The blocked end of the shell (341) is provided with a connecting hole along its axial direction. The disc (342) is located inside the shell (341) and is coaxially arranged with the shell (341). The disc (342) The side wall surface is slidably connected to the inner wall surface of the shell (341), the connecting rod (343) is coaxially arranged with the assembly shaft (31) and slidably connected to the connecting through hole, one end of the connecting rod (343) is fastened to a plate surface of the disc (342) away from the open end, and the other end is fastened to the assembly shaft (31), and the refractory material (344) is filled between the open end of the shell (341) and the disc (342).

7. The emergency plugging device for the discharge port of a top-blown furnace according to claim 6, characterized in that: The refractory material (344) is made of yellow mud.

8. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1, characterized in that: The assembly shaft (31) and the assembly groove (21) are screw-connected.

9. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1, characterized in that: The guard plate (2) is a circular guard plate, which is coaxially arranged with the first end of the push rod (1) and is tightly connected. An end surface of the circular guard plate away from the push rod (1) is provided with an assembly groove (21) coaxially arranged with the circular guard plate.

10. The emergency plugging device for the discharge port of a top-blown furnace according to claim 1, characterized in that: The second end of the push rod (1) is rolled along its circumferential outer surface to form an anti-slip pattern for easy gripping.

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