A blast furnace taphole tool

Abstract

The utility model provides a kind of cannon head dismounting tool for blast furnace mud gun, including tight plate, it is blocking main body, for sticking cannon head end part to cannon head to exert resistance force, clamping plate is set to one side of tight plate, clamping plate is set to frame type structure, the inside wall of clamping plate is adapted to the connecting place of mud gun barrel and cannon head, for clamping positioning at the connecting place of mud gun barrel and cannon head, two connecting plates are respectively set to the two sides of tight plate and clamping plate, for connecting tight plate and clamping plate, to form the dismounting force structure to cannon head, the utility model is dismounted cannon head by mud pressure generated axial thrust steadily by tight plate and clamping plate cooperation, replace traditional hammering, avoid metal debris splashing, cannon head falling off and impact force cause equipment connecting place deformation, sealing element failure, improve dismounting safety and equipment reliability.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace mud gun head disassembly technology, specifically to a tool for disassembling the head of a blast furnace mud gun. Background Technology

[0002] In the blast furnace ironmaking process, the taphole is the core channel for controlling the discharge of molten iron, and its sealing performance directly affects the safety and stability of blast furnace operation. The mud gun device presses refractory mud into the taphole channel through the gun head, and is a key device for achieving taphole sealing.

[0003] However, under high temperature, high pressure, and high frequency operating conditions, the mud gun head is prone to erosion, deformation, or wear due to direct contact with molten iron and frequent high pressure impacts, resulting in a significantly shortened service life. According to statistics, a single blast furnace needs to replace the gun head more than 20 times a month. In the existing technology, when replacing the gun head, at least two operators need to repeatedly hammer the connection between the gun head and the mud gun body from both sides with sledgehammers to use the impact force to destroy the sintered and bonded structure, thereby achieving the purpose of removing the gun head.

[0004] However, when the cannon head is disassembled by forceful hammering in the traditional way, flying metal fragments and the cannon head falling off may cause injury to the workers. In addition, the impact force of hammering is transmitted through the cannon head to the mud cannon body, which may damage the mud cannon (such as causing deformation at the connection, failure of hydraulic cylinder seals, etc.), and also reduce the disassembly speed and increase the labor intensity of the workers. Utility Model Content

[0005] In view of this, the present invention provides a tool for disassembling the head of a blast furnace mud gun. The tool can be used to disassemble the head smoothly by using the axial thrust generated by the pressure of the mud gun inside the mud gun through the cooperation of the top clamping plate and the snap-fit ​​plate. This replaces the traditional hammering method, avoids metal fragments flying, head falling off and injuring people, and impact causing deformation of equipment connections and failure of seals, thereby improving disassembly safety and equipment reliability.

[0006] To solve the above-mentioned technical problems, this utility model provides a tool for disassembling the head of a blast furnace mud gun, including a top clamping plate, which is a blocking body used to fit against the end of the head and apply a resisting force to the head. A snap-fit ​​plate is set on one side of the top clamping plate. The snap-fit ​​plate is set as a frame structure. The inner side wall of the snap-fit ​​plate is adapted to the connection between the mud gun body and the head (that is, the connection surface between the head end face and the mud gun body end face forms a boss structure, and the snap-fit ​​plate is snapped on the end face of the head facing the mud gun body), and is used to snap and position at the connection between the mud gun body and the head.

[0007] Two connecting plates are fixedly connected to both sides of the top clamping plate and the snap-fit ​​plate, respectively, to connect the top clamping plate and the snap-fit ​​plate to form a force-applying structure for disassembling the gun head.

[0008] A first nut is provided on the side of the snap-fit ​​plate away from the top clamping plate. The first nut is connected to a threaded rod by a threaded engagement. The threaded rod passes through the top clamping plate and is detachably connected to a top plate at the end of the threaded rod facing the snap-fit ​​plate. The contact pressure between the top plate and the end face of the gun head can be adjusted by rotating the threaded rod to accommodate the disassembly of gun heads of different specifications.

[0009] A second nut is fixedly connected to one side of the top plate near the threaded rod, and the second nut is connected to one end of the threaded rod by a threaded engagement.

[0010] The diameter of the top plate is equal to the diameter of the cannon head, which is used to evenly transmit force to the end face of the cannon head.

[0011] At least one reinforcing plate is fixedly connected to the upper part of the top clamping plate and the snap-fit ​​plate to enhance the structural strength of the connection between the top clamping plate and the snap-fit ​​plate and ensure the stability of the connecting plate and the snap-fit ​​plate during the disassembly of the gun head.

[0012] A handle is fixedly connected to the end of the threaded rod away from the top plate. The handle is set perpendicular to the threaded rod, allowing the operator to drive the threaded rod to rotate by rotating the handle, making the operation more labor-saving for the operator.

[0013] An anti-slip layer is fixedly attached to the outer wall of the handle to enhance the friction between the operator and the handle. Anti-slip grooves are provided on the surface of the anti-slip layer to improve comfort.

[0014] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0015] 1. Safe and efficient disassembly, reducing equipment damage: Through the cooperation structure of the top clamping plate and the snap-fit ​​plate, the axial thrust generated by the mud pressure inside the mud cannon is used to smoothly disassemble the cannon head, replacing the traditional violent hammering method. This avoids injury to workers caused by flying metal fragments and the cannon head falling off. At the same time, it prevents damage such as deformation of the connection and failure of the seal caused by the impact force transmitted to the mud cannon body, thus improving the safety of the disassembly process and the reliability of the equipment.

[0016] 2. Adaptable to different cannon heads, improving versatility: The threaded rod and detachable top plate structure on the outer side of the snap-fit ​​plate can adjust the contact pressure between the top plate and the cannon head end face by rotating the threaded rod, adapting to the disassembly needs of cannon heads of different lengths; the top plate is connected to the threaded rod through the second nut, allowing for quick replacement with a matching top plate of the same diameter as the cannon head, without the need to replace the entire tool set, reducing production and maintenance costs, and improving the tool's versatility for cannon heads of different specifications.

[0017] 3. Uniform force transmission improves disassembly stability: The diameter of the top plate is equal to the diameter of the cannon head, ensuring that the mud pressure of the mud cannon is evenly transmitted to the end face of the cannon head, avoiding deformation or damage to the cannon head caused by uneven force, while maintaining the force balance of the cannon head during disassembly, preventing tool tilting, and improving disassembly efficiency and cannon head integrity.

[0018] 4. Enhance structural strength and ensure stability under high pressure conditions: The reinforcing plate set on the upper part of the clamping plate and the snap-fit ​​plate effectively enhances the structural strength of the connection between the two, resists the axial clamping force during disassembly, prevents the snap-fit ​​plate from bending, breaking or moving towards the center, ensures the snap-fit ​​positioning accuracy, and improves the tool's resistance to deformation and overall stability under high pressure conditions.

[0019] 5. Reduced operation difficulty and labor intensity: The handle vertically set at the end of the threaded rod, together with the outer anti-slip layer and anti-slip groove, provides a comfortable and labor-saving operating experience. Operators can easily adjust the position of the top plate by rotating the handle, without the need for multiple people to cooperate or high-intensity physical labor, which significantly reduces the difficulty of operation and labor intensity. In wet or oily environments, the anti-slip design effectively prevents the hand from slipping and improves the safety of operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the other side of this utility model;

[0022] Figure 3 This is a schematic diagram of the top clamping plate and its components of the present invention;

[0023] Figure 4 This is a schematic diagram of the threaded rod and its components according to this utility model.

[0024] In the diagram: 101, clamping plate; 102, snap-fit ​​plate; 103, connecting plate;

[0025] 201. First nut; 202. Threaded rod; 203. Top plate;

[0026] 301. Second nut;

[0027] 401. Reinforcing plate;

[0028] 501. Handle; 502. Anti-slip layer. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0030] A tool for disassembling the head of a blast furnace mud gun, such as Figure 1 , 3 As shown: It includes a top clamping plate 101, which is the blocking body and is used to fit against the end of the gun head to apply a resisting force to the gun head. A snap-fit ​​plate 102 is set on one side of the top clamping plate 101. The snap-fit ​​plate 102 is set as a frame structure. The inner side wall of the snap-fit ​​plate 102 is adapted to the connection between the mud gun barrel and the gun head (that is, the connection surface between the end face of the gun head and the end face of the mud gun barrel forms a boss structure, and the snap-fit ​​plate 102 is snapped on the end face of the gun head facing the mud gun barrel) for snap-fit ​​positioning at the connection between the mud gun barrel and the gun head.

[0031] Two connecting plates 103 are fixedly connected to the sides of the top clamping plate 101 and the snap-fit ​​plate 102 respectively, and are used to connect the top clamping plate 101 and the snap-fit ​​plate 102 to form a force-applying structure for disassembling the gun head.

[0032] The inner wall of the snap-fit ​​plate 102 is adapted to the connection between the mud gun barrel and the gun head (i.e., the boss structure). The snap-fit ​​plate 102 can be directly snapped onto the connection end face between the gun head and the barrel to form a stable positioning and snapping structure. When the gun head needs to be disassembled, the mud gun is started, and the mud pressure generated inside the mud gun is transmitted to the gun head through the cooperation of the top plate 101 and the snap-fit ​​plate 102. The planar thrust of the top plate 101 and the limiting snap-fit ​​action of the snap-fit ​​plate 102 are used to push the gun head down smoothly from the mud gun barrel and make the gun head fall between the snap-fit ​​plate 102 and the top plate 101, which replaces the traditional method and prevents damage to the gun head and the mud gun barrel.

[0033] The snap-fit ​​plate 102 is snapped onto the connecting end face of the gun head and the mud gun body, so that the force direction of the snap-fit ​​plate 102 is consistent with the disassembly direction of the gun head. This can directly convert the thrust of the top plate 101 (i.e. the pressure on the top mud after the mud gun is started, and the pressure is transmitted to the gun head as the thrust to push the gun head) into the axial force for disassembling the gun head, reducing force loss and improving disassembly efficiency (the above structure is applicable to disassembling the same type of blast furnace gun head).

[0034] Furthermore, for cannon heads with different diameters but the same length, the opening of the clamping plate 102 can be enlarged using a flaring tool or pliers. If the material used for the clamping plate 102 is relatively hard, the clamping plate 102 can be directly cut off with a cutting plate, and a clamping plate 102 that matches the diameter of the cannon head can be welded on (because its cost is relatively low).

[0035] like Figure 1 , 2 As shown in Figure 4: A first nut 201 is provided on the side of the snap-fit ​​plate 102 away from the top clamping plate 101. The first nut 201 is connected to a threaded rod 202 by a threaded engagement. The threaded rod 202 passes through the top clamping plate 101. A top piece 203 is detachably connected to the end of the threaded rod 202 facing the snap-fit ​​plate 102. By rotating the threaded rod 202, the contact pressure between the top piece 203 and the end face of the gun head can be adjusted to adapt to the disassembly of gun heads of different specifications.

[0036] Different models of blast furnace mud gun heads may have different lengths. The threaded rod 202, in conjunction with the first nut 201, can be screwed in or out of the top plate 203 to adapt to the change in distance between the end face of the gun head (the end face near the side of the mud gun body) and the snap-fit ​​plate 102. This is suitable for different specifications of gun head lengths, thereby improving the applicability of the overall structure.

[0037] After the top plate 203 is tightened against the gun head by rotating the threaded rod 202, the threaded rod 202 will automatically lock (because the friction will prevent the threaded rod 202 from rotating in the opposite direction and loosening after the top plate 203 tightens against the gun head), ensuring the stability of the gun head during disassembly. The use of the threaded rod 202 in conjunction with the first nut 201 can also improve convenience. When using it, you only need to rotate the threaded rod 202. The operation is simple and does not require too many complicated operations.

[0038] like Figure 2 , 4 As shown: A second nut 301 is fixedly connected to the side of the top plate 203 near the threaded rod 202. The second nut 301 is connected to one end of the threaded rod 202 by a threaded engagement. When encountering different specifications of gun heads, it is only necessary to unscrew the current fixed plate by the second nut 301 and replace it with a new top plate 203 that matches the diameter of the gun head. This can shorten the preparation time when disassembling gun heads of different specifications and improve the versatility and efficiency of the tool.

[0039] Furthermore, instead of producing multiple complete disassembly tool bodies, only a relatively simple offset top plate 203 needs to be manufactured, reducing the production and purchase costs of the tool and also reducing maintenance costs.

[0040] Preferably, the diameter of the top plate 203 is equal to the diameter of the cannon head, so as to evenly transmit the force to the end face of the cannon head. That is, the equal diameter can ensure that the pressure of the mud gun starting (the pressure transmitted to the cannon head) is evenly distributed on the end face of the cannon head, thus protecting the integrity of the cannon head to the greatest extent.

[0041] When the top surface completely covers the end face of the cannon head, the axial clamping force generated by the threaded rod 202 can be effectively transmitted to the cannon head that needs to be ejected, preventing force loss or dispersion, improving disassembly efficiency, and the uniform contact surface helps to maintain the force balance of the cannon head during disassembly, avoiding the top plate 203 and the entire tool from tilting.

[0042] like Figure 2 , 3As shown: At least one reinforcing plate 401 is fixedly connected to the upper part of the top clamping plate 101 and the snap-fit ​​plate 102. In this embodiment, one reinforcing plate 401 is used and is disposed on the upper outer side wall of the top clamping plate 101 and the snap-fit ​​plate 102 to enhance the structural strength of the connection between the top clamping plate 101 and the snap-fit ​​plate 102 and ensure the stability of the connecting plate 103 and the snap-fit ​​plate 102 during the disassembly of the gun head.

[0043] When disassembling the gun head, a large axial clamping force is required (the test shows a pressure of about 15 kg or more). The reinforcing plate 401 can improve the connection structure between the clamping plate 101 and the snap-fit ​​plate 102, preventing the upper end of the snap-fit ​​plate 102 from moving towards the center, thereby preventing the snap-fit ​​plate 102 from bending or breaking, and thus avoiding affecting the accuracy of the snap-fit ​​positioning.

[0044] The reinforcing plate 401 further strengthens the tension plate 101 and the snap-fit ​​plate 102, improving the overall tool's ability to resist lateral bending or torsional deformation and ensuring the tool's stability under high-pressure conditions.

[0045] like Figure 1 , 4 As shown: A handle 501 is fixedly connected to the end of the threaded rod 202 away from the top plate 203. In this embodiment, the handle 501 can be made directly from a steel pipe. The handle 501 is set perpendicular to the threaded rod 202, so that the operator can drive the threaded rod 202 to rotate by rotating the handle 501, making the operation more labor-saving for the operator. The length and shape design of the handle 501 allow the operator to select the best force application angle in a limited space.

[0046] An anti-slip layer 502 is fixedly connected to the outer wall of the handle 501 to enhance the friction between the operator and the handle 501. The anti-slip layer 502 can be made of rubber. The surface of the anti-slip layer 502 has anti-slip grooves to improve comfort. In wet or oily environments, the anti-slip design can effectively prevent slipping and avoid injury or loss of control of the tool due to the operator's hand slipping.

[0047] When using:

[0048] Observe the diameter and length specifications of the cannon head to be disassembled, select a suitable top plate 203 according to the diameter of the cannon head end face (the diameter of the top plate 203 must be equal to the diameter of the cannon head), and connect the top plate 203 to the front end of the threaded rod 202 (near the snap plate 102) through the second nut 301 to ensure that the top plate 203 is installed firmly.

[0049] Align the inner wall of the locking plate 102 with the connection point (protrusion structure) between the mud gun barrel and the gun head, and slowly push it in axially so that the locking plate 102 is locked onto the end face of the gun head facing the mud gun barrel, forming a stable limiting and locking structure.

[0050] Hold the handle 501 and rotate the handle 501 to drive the threaded rod 202 to move towards the gun head, so that the top plate 203 initially contacts the end face of the gun head (the end face near the side of the mud gun body). According to the length of the gun head, adjust the top plate 203 to a suitable position through the threaded engagement of the threaded rod 202 and the first nut 201 to ensure that the top plate 203 is completely in contact with the end face of the gun head and that the top plate 203 abuts against the gun head.

[0051] After tightening, start the mud gun. Utilize the thrust generated by the mud pressure inside the mud gun, and through the cooperation of the tightening plate 101 and the locking plate 102, smoothly push the gun head out of the mud gun body. Alternatively, the locking plate 102 can be used in conjunction with the top plate 203 to push the gun head out.

[0052] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A tool for disassembling the head of a blast furnace mud gun, characterized in that: include: The top plate (101) is the main blocking body, used to fit against the end of the gun head and apply a resisting force to the gun head; A snap-fit ​​plate (102) is provided on one side of the top clamping plate (101). The snap-fit ​​plate (102) is configured as a frame structure. The inner sidewall of the snap-fit ​​plate (102) is adapted to the connection between the mud gun barrel and the gun head, and is used to snap-fit ​​and position at the connection between the mud gun barrel and the gun head. Two connecting plates (103) are respectively disposed on both sides of the top clamping plate (101) and the snap-fit ​​plate (102) to connect the top clamping plate (101) and the snap-fit ​​plate (102) to form a force-applying structure for disassembling the gun head.

2. The tool for dismantling the blast furnace mud gun as described in claim 1, characterized in that: A first nut (201) is provided on the side of the snap-fit ​​plate (102) away from the top clamping plate (101). The first nut (201) is connected to a threaded rod (202) by a threaded engagement. The threaded rod (202) passes through the top clamping plate (101). A top plate (203) is provided on the end of the threaded rod (202) facing the snap-fit ​​plate (102). By rotating the threaded rod (202), the contact pressure between the top plate (203) and the end face of the gun head can be adjusted to adapt to the disassembly of gun heads of different specifications.

3. The tool for disassembling the blast furnace mud gun head as described in claim 2, characterized in that: The diameter of the top plate (203) is equal to the diameter of the gun head, and is used to uniformly transmit force to the end face of the gun head.

4. The tool for disassembling the blast furnace mud gun as described in claim 3, characterized in that: The top plate (203) is detachably connected to one end of the threaded rod (202) near the snap plate (102) for quick replacement of the appropriate top plate (203) according to different gun head specifications.

5. The tool for disassembling the blast furnace mud gun head as described in claim 4, characterized in that: A second nut (301) is provided on the side of the top plate (203) near the threaded rod (202), and the second nut (301) is connected to one end of the threaded rod (202) by a threaded engagement.

6. The tool for disassembling the blast furnace mud gun head as described in claim 5, characterized in that: At least one reinforcing plate (401) is provided on the upper part of the top clamping plate (101) and the snap-fit ​​plate (102) to enhance the structural strength of the connection between the top clamping plate (101) and the snap-fit ​​plate (102) and ensure the stability of the top clamping plate (101) and the snap-fit ​​plate (102) during the disassembly of the gun head.

7. The tool for dismantling the blast furnace mud gun as described in claim 2, characterized in that: A handle (501) is provided at the end of the threaded rod (202) away from the top plate (203). The handle (501) is perpendicular to the threaded rod (202) and is used by the operator to drive the threaded rod (202) to rotate by rotating the handle (501).

8. The tool for dismantling the blast furnace mud gun head as described in claim 7, characterized in that: An anti-slip layer (502) is provided on the outer wall of the handle (501) to increase the friction between the operator and the handle (501).

9. The tool for dismantling the blast furnace mud gun head as described in claim 8, characterized in that: The surface of the anti-slip layer (502) is provided with anti-slip grooves to improve comfort.

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