Blast furnace tuyere channel grouting device

Abstract

The utility model provides a blast furnace iron mouth hole channel grouting device belongs to metallurgical industry equipment technical field, including grouting hopper, grouting pipeline, exhaust pipeline and support frame, grouting hopper with grouting pipeline one end weld intercommunication, exhaust pipeline with grouting pipeline middle section weld intercommunication, support frame with grouting pipeline weld, be used for supporting grouting pipeline. The utility model discloses a grouting hopper, grouting pipeline, exhaust pipeline and support frame weld as a whole, have guaranteed the structure rigidity and sealing property of device, have prevented the grouting process in the grouting process problem. The setting of support frame makes device in grouting process can be stable in position, need not manual holding, improved operation safety and efficiency. Exhaust pipeline is the key of scheme, and its effective exhaust avoids the air resistance in the hole, ensures that the slurry can fill the whole hole, thereby guaranteeing the quality of grouting repair.

Description

Technical Field

[0001] This utility model relates to the field of equipment technology in the metallurgical industry, and in particular to a grouting device for blast furnace tapholes. Background Technology

[0002] The taphole area of ​​a blast furnace is typically constructed using large or small pieces of refractory material, including the taphole cooling wall and the furnace shell. During initial commissioning and production, newly built blast furnaces often experience problems with the lining, such as excessively large brick joints. Additionally, thermal expansion and stress can cause gaps between the refractory lining, between the refractory and the cooling wall, and between the cooling wall and the furnace shell. Gas can then seep into the taphole channels through these gaps, causing taphole splashing. Taphole splashing results in lost blast furnace output, environmental pollution from molten iron smoke, increased workload for furnace workers, and seriously compromises blast furnace production safety. Utility Model Content

[0003] This utility model provides a grouting device for blast furnace tapholes to solve the defects of grouting in existing blast furnace tapholes.

[0004] This utility model provides a grouting device for blast furnace tapholes, including a grouting funnel, a grouting pipe, an exhaust pipe, and a support frame; the grouting funnel is welded to one end of the grouting pipe, the exhaust pipe is welded to the middle section of the grouting pipe, and the support frame is welded to the grouting pipe to support the grouting pipe.

[0005] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the grouting funnel is a square funnel.

[0006] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the side length of the grouting funnel is 150-250mm.

[0007] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the wall thickness of the grouting funnel is 2-5mm.

[0008] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the grouting pipe includes a first pipe and a second pipe, and an angle is provided between the first pipe and the second pipe.

[0009] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the angle between the first pipe and the second pipe is 80-100°.

[0010] According to the present invention, a grouting device for blast furnace taphole is provided, wherein the grouting funnel is connected to the front end of the first pipe, the exhaust pipe is welded to the middle section of the second pipe, and the support frame is installed on the second pipe and located between the end of the second pipe and the exhaust pipe.

[0011] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the inner diameter of the grouting pipe and the exhaust pipe is 50-60mm.

[0012] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the wall thickness of the grouting pipe and the exhaust pipe is 2-5mm.

[0013] According to the present invention, a grouting device for blast furnace tapholes is provided, wherein the first and second grouting pipes are integrally formed.

[0014] The grouting device for blast furnace tapholes provided by this utility model welds the grouting funnel, grouting pipe, exhaust pipe, and support frame into a single unit, ensuring the structural rigidity and sealing of the device and preventing grout leakage during the grouting process. The support frame allows the device to be stably positioned during grouting without manual intervention, improving operational safety and efficiency. The exhaust pipe is crucial to the solution; its effective venting prevents air blockage within the duct, ensuring that the grout fills the entire duct and thus guaranteeing the quality of the grouting repair. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the grouting device for blast furnace tapholes provided by this utility model; Figure 2 This is a top view of the grouting device for blast furnace tapholes provided by this utility model.

[0017] Figure label: 100. Grouting funnel; 200. Grouting pipe; 210. First pipeline; 220. Second pipeline; 300. Exhaust pipe; 400. Support frame. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" indicate the direction or positional relationship, which is usually based on Figure 1 The orientation and position of the blast furnace taphole grouting device shown are for the purpose of describing this utility model and simplifying the description only. Unless otherwise stated, these directional terms do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0022] This utility model provides a grouting device for blast furnace tapholes, including a grouting funnel 100, a grouting pipe 200, an exhaust pipe 300, and a support frame 400; the grouting funnel 100 is welded to one end of the grouting pipe 200, the exhaust pipe 300 is welded to the middle section of the grouting pipe 200, and the support frame 400 is welded to the grouting pipe 200 to support the grouting pipe 200.

[0023] The grouting funnel 100, grouting pipe 200, venting pipe 300, and support frame 400 are connected by welding to form an integral functional unit. The grouting funnel 100 is responsible for receiving the grout and is welded to one end of the grouting pipe 200 to allow the grout to flow in. The venting pipe 300 is welded to the middle section of the grouting pipe 200 to discharge air from the iron tap hole during the grouting process. The support frame 400 is welded to the grouting pipe 200 to provide stable support for the entire device.

[0024] First, insert the end of the grouting pipe 200 into the duct of the blast furnace taphole. Then, fix both ends of the support frame 400 to the sides of the iron trough near the blast furnace taphole to ensure the stability of the device. During grouting, the grout is injected from the grouting funnel 100 and flows through the grouting pipe 200 into the taphole duct. At the same time, the air in the duct is squeezed by the grout and discharged from the opening of the exhaust pipe 300.

[0025] By welding the grouting funnel 100, grouting pipe 200, venting pipe 300, and support frame 400 into a single unit, the structural rigidity and sealing of the device are ensured, preventing grout leakage during the grouting process. The support frame 400 allows the device to be stably positioned during grouting without manual intervention, improving operational safety and efficiency. The venting pipe 300 is crucial to the solution; its effective venting prevents air blockage within the duct, ensuring the grout fills the entire duct and thus guaranteeing the quality of the grouting repair.

[0026] In one embodiment, the grouting funnel 100 is a square funnel. This square funnel can be formed by bending and welding sheet metal, and its cross-section maintains a similar square geometry from top to bottom.

[0027] Compared with the traditional round funnel, the square funnel has several advantages: First, the square structure is easier to align and weld with the grouting pipe 200 during manufacturing, improving the manufacturability; second, the square funnel is more stable when placed and is less prone to rolling; third, its angular structure may make it easier to connect with other feeding equipment.

[0028] In one embodiment, the grouting funnel 100 has a side length of 150-250 mm. In a preferred embodiment, a square funnel with a side length of 200 mm can be used. This size can be adjusted within this range according to the actual size of the blast furnace and the grouting volume; for example, a 150 mm funnel can be used for a small blast furnace, and a 250 mm funnel can be used for a large blast furnace. The side length of 150-250 mm ensures that the funnel has sufficient capacity to temporarily store a certain amount of grout, ensuring the continuity of grouting, while avoiding being too bulky and affecting installation and operation in the narrow space in front of the furnace.

[0029] In one embodiment, the wall thickness of the grouting funnel 100 is 2-5 mm. The funnel can be made of 3 mm thick steel plate, and the 2-5 mm wall thickness design balances strength and weight. A wall thickness that is too thin (e.g., less than 2 mm) may cause the funnel to deform and be damaged when subjected to grout impact or accidental collision; a wall thickness that is too thick (e.g., greater than 5 mm) will unnecessarily increase the weight of the device and material costs. This wall thickness range ensures that the funnel has a sufficient service life in harsh industrial environments.

[0030] In one embodiment, the grouting pipe 200 includes a first pipe 210 and a second pipe 220, with an included angle between the first pipe 210 and the second pipe 220.

[0031] The first pipe 210 is a vertical or inclined feed section that connects to the funnel; the second pipe 220 is a horizontal or nearly horizontal output section that extends toward the iron tap. The two are connected by a bend structure, forming an angle.

[0032] Dividing the grouting pipe into 200mm sections with an angled section greatly enhances the adaptability and operability of the device. This angle allows operators to perform grouting operations from a safer and more comfortable position, avoiding radiation from the high-temperature furnace.

[0033] In one embodiment, the angle between the first pipe 210 and the second pipe 220 is 80-100°. In a typical embodiment, this angle is set to a 90-degree right angle. This can be achieved by a standard 90-degree bend or a direct bend process.

[0034] An angle range of 80-100° (especially 90°) is the most common and practical design. It can effectively change the flow direction of the slurry, allowing the second pipe 220 to be horizontally aligned with the taphole channel. This angle ensures smooth slurry flow, prevents clogging, and meets the spatial structure requirements of most blast furnace tapholes, making it the optimal angle range.

[0035] In one embodiment, the grouting funnel 100 is connected to the front end of the first pipe 210, the exhaust pipe 300 is welded to the middle section of the second pipe 220, and the support frame 400 is installed on the second pipe 220, located between the end of the second pipe 220 and the connection point of the exhaust pipe 300.

[0036] The grouting funnel 100 is connected to the front end of the first pipe 210, the exhaust pipe 300 is connected to the middle section of the second pipe 220, and the support frame 400 is installed on the second pipe 220.

[0037] The grout flow path is as follows: grouting funnel 100, first pipe 210, front end of second pipe 220, flowing through the connection point of exhaust pipe 300, and finally flowing out from the end of second pipe 220. The support frame 400 is installed on the second pipe 220, which can more stably support the second pipe 220 that carries the grout.

[0038] By placing the vent pipe 300 in the middle section of the second pipe 220, it is ensured that the air inside the pipe is completely vented before the grout reaches the end of the pipe and enters the taphole. By placing the support frame 400 on the second pipe 220, it can provide the most effective support for the core working section of the grouting pipe 200 (i.e., the part filled with grout), preventing the second pipe 220 from sagging due to its own weight and the weight of the grout, and ensuring the smooth and stable flow path of the grout.

[0039] In one embodiment, the inner diameter of the grouting pipe 200 and the venting pipe 300 is 50-60 mm.

[0040] The pipe inner diameter can be 55mm. An inner diameter range of 50-60mm is designed for the characteristics of the grout used in blast furnace taphole grouting (usually refractory mortar). This size ensures that the grout, especially that containing larger particles, can pass smoothly without frequent blockages, while also providing sufficient flow to guarantee grouting efficiency. An inner diameter that is too small is prone to clogging, while an inner diameter that is too large will result in a bulky device and potentially too low a grout flow rate.

[0041] In one embodiment, the wall thickness of the grouting pipe 200 and the venting pipe 300 is 2-5 mm. The pipes can be made of seamless or welded steel pipes with a wall thickness of 3 mm. The 2-5 mm wall thickness provides the necessary structural strength and wear resistance to withstand the erosion of the grout and physical impacts in the working environment. At the same time, this thickness range also controls the amount of material used, achieving a good balance between economy and durability of the device.

[0042] In one embodiment, the first pipe 210 and the second pipe 220 of the grouting pipe 200 are integrally formed. This can be achieved by directly purchasing standard integrally formed bends or by using a mold to bend a straight pipe.

[0043] One-piece molding is in contrast to segmented welding. Its biggest advantage is that it completely eliminates the weld seam at the connection between the first pipe 210 and the second pipe 220. This not only improves the structural strength and reliability of this critical bending section and avoids the risk of cracking due to welding defects, but more importantly, it provides a smooth transition inner wall, greatly reducing the possibility of slurry stagnation and blockage at the bend, ensuring smooth slurry flow, and extending the service life of the device.

[0044] In one embodiment, the grouting funnel 100, grouting pipe 200, exhaust pipe 300, and support frame 400 are made of carbon steel.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A grouting device for blast furnace tapholes, characterized in that, It includes a grouting funnel, a grouting pipe, an exhaust pipe, and a support frame; the grouting funnel is welded to one end of the grouting pipe, the exhaust pipe is welded to the middle section of the grouting pipe, and the support frame is welded to the grouting pipe to support the grouting pipe.

2. The grouting device for blast furnace tapholes according to claim 1, characterized in that, The grouting funnel is a square funnel.

3. The grouting device for blast furnace tapholes according to claim 2, characterized in that, The grouting funnel has a side length of 150-250mm.

4. The grouting device for blast furnace tapholes according to claim 3, characterized in that, The wall thickness of the grouting funnel is 2-5 mm.

5. The grouting device for blast furnace tapholes according to claim 1, characterized in that, The grouting pipeline includes a first pipeline and a second pipeline, and there is an angle between the first pipeline and the second pipeline.

6. The grouting device for blast furnace tapholes according to claim 5, characterized in that, The angle between the first pipe and the second pipe is 80-100°.

7. The grouting device for blast furnace tapholes according to claim 5, characterized in that, The grouting funnel is connected to the front end of the first pipe, the exhaust pipe is welded to the middle section of the second pipe, and the support frame is installed on the second pipe, located between the end of the second pipe and the connection point of the exhaust pipe.

8. The grouting device for blast furnace tapholes according to claim 1, characterized in that, The cross-sectional inner diameter of the grouting pipe and the exhaust pipe is 50-60mm.

9. The grouting device for blast furnace tapholes according to claim 1, characterized in that, The wall thickness of the grouting pipe and the exhaust pipe is 2-5mm.

10. The grouting device for blast furnace tapholes according to claim 5, characterized in that, The first and second pipes of the grouting pipeline are integrally formed.

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