Blast furnace taphole mud sleeve pressing device

Abstract

The utility model discloses a material pressing device for a blast furnace iron notch mud sleeve, which belongs to the technical field of pouring of the blast furnace iron notch mud sleeve and comprises a shaping main body. The shaping main body comprises a mounting part, a material pressing part and a positioning part which are integrally formed, the mounting part is of a hollow cylindrical structure, the mounting part can be arranged in the cannon head in a penetrating mode, the material pressing part is of a solid cylindrical structure, the mounting part is arranged on one side of the material pressing part, and the other side of the material pressing part is sunken in the direction close to the mounting part to form a material pressing space; the positioning part is arranged in the material pressing space, and the positioning part and the material pressing part are coaxially arranged; a limiting protruding edge is arranged on the periphery of the material pressing part and can abut against the end of the cannon head. Through the structural design of the shaping main body, the problems of uncontrollable mud core depth, complex manual finishing, long drying time, low operation efficiency and the like in the prior art are effectively solved, and the sealing property and durability of the mud sleeve are improved, so that the safe and stable operation of a blast furnace is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace iron mouth mud sleeve casting, in particular to a blast furnace iron mouth mud sleeve pressing device. Background Art

[0002] In the modern blast furnace ironmaking process, the sealing and maintenance of the taphole is a key link to ensure the safe operation and efficient production of the blast furnace. The sealing of the taphole directly affects the discharge quality of molten iron and slag, and is also related to the thermal efficiency and operational safety of the blast furnace. In order to ensure good sealing performance of the taphole, mud sleeve plugging technology is usually used. Generally speaking, the mud sleeve is made of refractory ramming material, which is pressed and formed by mud gun equipment to form a sealing layer that can withstand high temperature and chemical erosion.

[0003] At present, the existing common technical scheme is to squeeze the refractory ramming material to the blast furnace iron mouth through a mud gun to form a mud sleeve. In this process, the front end of the mud gun head faces the ramming material at the furnace door and squeezes it, and part of the ramming material is squeezed into the mud gun head hole to form a mud core. After the suppression is completed, the mud gun head remains in a suppressed state for drying. After drying, the mud gun head is returned, and the shape (length and center hole) of the mud core is trimmed by tools such as a sledgehammer and a steel chisel to meet the use requirements. Although this process can meet the sealing requirements of the blast furnace iron mouth to a certain extent, it still has many shortcomings.

[0004] The existing technical solutions have the following major technical defects and problems in practical applications: During the pressing process, since the depth of the mud core is difficult to accurately control, the sealing effect and consistency of the mud sleeve are poor, affecting the safe operation of the blast furnace. The dried mud core needs to be trimmed manually using tools, which not only increases the labor intensity, but also easily leads to uneven mud core shape, affecting the sealing effect and service life of the iron mouth. The mud sleeve requires a long drying process after pressing, which prolongs the production cycle, and uneven drying may cause cracking and deformation of the mud sleeve, further affecting the stable operation of the blast furnace. The entire mud sleeve production and trimming process is cumbersome and complicated, which increases the difficulty of blast furnace operation, reduces the overall operating efficiency, and increases production costs. Utility Model Content

[0005] The utility model aims to provide a blast furnace iron mouth mud sleeve pressing device to solve the technical problems of poor mud sleeve shaping effect and low manufacturing efficiency in the prior art.

[0006] As conceived above, the technical solution adopted by the utility model is:

[0007] A blast furnace iron mouth mud sleeve pressing device, comprising:

[0008] The shaping body comprises an integrally formed mounting portion, a pressing portion and a positioning portion, wherein the mounting portion is a hollow cylindrical structure, and the mounting portion can be passed through the gun head, and the pressing portion is a solid cylindrical structure, wherein the mounting portion is arranged on one side of the pressing portion, and the other side of the pressing portion is recessed in a direction close to the mounting portion to form a pressing space, and the positioning portion is arranged in the pressing space, and the positioning portion is coaxially arranged with the pressing portion; a limiting convex edge is arranged on the periphery of the pressing portion, and the limiting convex edge can abut against the end of the gun head.

[0009] Preferably, the cross section of the positioning portion is circular.

[0010] Preferably, the diameter of the positioning portion is greater than or equal to 1 / 5 of the diameter of the pressing portion and less than or equal to 1 / 2 of the diameter of the pressing portion.

[0011] Preferably, a rounded corner is formed at a contact position between the positioning portion and the pressing portion.

[0012] Preferably, the outer diameter of the mounting portion is slightly smaller than the inner diameter of the gun head.

[0013] Preferably, the mounting portion and the pressing portion are coaxially arranged and have the same radius.

[0014] Preferably, the outer surface of the mounting portion is provided with anti-slip grooves.

[0015] Preferably, the pressing space comprises a plane segment and an arc segment, and the radius of the arc segment is greater than or equal to 8 mm and less than or equal to 16 mm.

[0016] Preferably, the limiting convex edge is flush with the end of the pressing portion.

[0017] Preferably, the shaping body is made of high temperature resistant alloy material.

[0018] Beneficial effects of the utility model:

[0019] The blast furnace iron mouth mud sleeve pressing device proposed in the utility model ensures the stability and durability of the structure through the shaping body including an integrally formed installation part, a pressing part and a positioning part. The installation part is a hollow cylindrical structure, which can be tightly inserted into the gun head, providing reliable fixation and support, thereby avoiding the problem of uncontrollable mud core depth. By accurately controlling the pressing process of the mud sleeve, the sealing effect and consistency of the mud sleeve are improved, and the safe operation of the blast furnace is ensured. The pressing part is a solid cylindrical structure with high strength and heat resistance, and can effectively withstand high temperature and high pressure environment; the pressing space formed by the depression of the other side of the pressing part in the direction close to the installation part provides sufficient volume to accommodate the ramming material, so that the formation of the mud core is more uniform and stable. The positioning part is arranged in the pressing space and is coaxial with the pressing part, ensuring the accurate position of the center hole of the mud sleeve, thereby reducing the workload of manual trimming, reducing labor intensity, and improving work efficiency. In addition, the limiting convex edge arranged on the periphery of the pressing part can abut against the end of the gun head, further improving the stability of the pressing process, not only preventing the displacement of the mud sleeve during the pressing process, but also ensuring the uniform shape of the mud sleeve, avoiding the problem of deformation or cracking of the mud core. In general, the blast furnace iron mouth mud sleeve pressing device provided by the utility model effectively solves the problems of uncontrollable mud core depth, complex manual trimming, long drying time, low operating efficiency and the like in the prior art through the structural design of the shaping body, improves the sealing and durability of the mud sleeve, thereby ensuring the safe and stable operation of the blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of a blast furnace iron mouth mud sleeve pressing device provided by an embodiment of the utility model;

[0021] Figure 2 It is a top view of a blast furnace iron mouth mud sleeve pressing device provided by an embodiment of the utility model.

[0022] In the figure:

[0023] 10. Shaping body; 11. Mounting portion; 12. Pressing portion; 120. Pressing space; 121. Plane section; 122. Arc section; 13. Positioning portion; 14. Limiting convex edge. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0028] The utility model provides a blast furnace iron mouth mud sleeve pressing device, which is arranged on the gun head of the blast furnace mud gun, and extends the gun head into the ramming material to extrude and form the mud sleeve.

[0029] See also Figure 1 and Figure 2 The blast furnace iron mouth mud sleeve pressing device provided by the embodiment of the utility model includes a shaping body 10. Among them, the shaping body 10 includes an integrally formed mounting portion 11, a pressing portion 12 and a positioning portion 13. The mounting portion 11 is a hollow cylindrical structure, and the mounting portion 11 can be inserted into the gun head. The pressing portion 12 is a solid cylindrical structure. The mounting portion 11 is arranged on one side of the pressing portion 12, and the other side of the pressing portion 12 is recessed in a direction close to the mounting portion 11 to form a pressing space 120. The positioning portion 13 is arranged in the pressing space 120, and the positioning portion 13 is coaxially arranged with the pressing portion 12; the outer periphery of the pressing portion 12 is provided with a limiting convex edge 14, and the limiting convex edge 14 can abut against the end of the gun head.

[0030] It can be understood that the blast furnace mud cannon is a commonly used mechanical equipment in this field. The specific structure and working principle of the blast furnace mud cannon and the cannon head are not described here.

[0031] The shaping body 10 includes an integrally formed mounting portion 11, a pressing portion 12 and a positioning portion 13, thereby ensuring the stability and durability of the structure. The mounting portion 11 is a hollow cylindrical structure, which can be tightly inserted into the gun head, providing reliable fixation and support, thereby avoiding the problem of uncontrollable mud core depth. By accurately controlling the pressing process of the mud sleeve, the sealing effect and consistency of the mud sleeve are improved, ensuring the safe operation of the blast furnace. The pressing portion 12 is a solid cylindrical structure, which has high strength and heat resistance, and can effectively withstand high temperature and high pressure environments; the pressing space 120 formed by the other side of the pressing portion 12 being recessed in the direction close to the mounting portion 11 provides sufficient volume to accommodate the ramming material, so that the formation of the mud core is more uniform and stable. The positioning portion 13 is arranged in the pressing space 120 and is coaxially arranged with the pressing portion 12, ensuring that the center hole position of the mud sleeve is accurate, thereby reducing the workload of manual trimming, reducing labor intensity, and improving work efficiency. In addition, the limiting convex edge 14 is arranged on the periphery of the pressing part 12, and the limiting convex edge 14 can abut against the end of the gun head, further improving the stability of the pressing process, not only preventing the mud sleeve from being displaced during the pressing process, but also ensuring the uniform shape of the mud sleeve, avoiding the problem of mud core deformation or cracking. In general, the blast furnace iron mouth mud sleeve pressing device provided by the utility model effectively solves the problems of uncontrollable mud core depth, complex manual trimming, long drying time, low operating efficiency and the like in the prior art through the structural design of the shaping body 10, improves the sealing and durability of the mud sleeve, thereby ensuring the safe and stable operation of the blast furnace.

[0032] Regarding the structure of the positioning portion 13, the cross section of the positioning portion 13 is circular. The circular cross section design of the positioning portion 13 ensures that the mud sleeve remains concentric during the pressing process, thereby effectively improving the sealing effect between the mud sleeve and the iron mouth of the blast furnace, reducing the leakage of molten iron and slag, and ensuring the safe and stable operation of the blast furnace. In addition, the circular cross-section positioning portion 13 makes the shape of the mud core more regular and uniform, reduces the process of manual trimming of the mud core after drying, improves work efficiency, and reduces labor intensity. In other embodiments, the cross section of the positioning portion 13 can also be set to a rectangle, an ellipse, etc. according to actual conditions, which will not be repeated here.

[0033] Specifically, the diameter of the positioning portion 13 is greater than or equal to 1 / 5 of the diameter of the pressing portion 12 and less than or equal to 1 / 2 of the diameter of the pressing portion 12, thereby ensuring that the mud core has an appropriate size ratio when it is formed, ensuring that the shape of the mud core is uniform and regular, improving the density and stability of the mud core, and effectively improving the sealing effect of the mud sleeve. This size ratio enables the positioning portion 13 to provide sufficient support during the pressing process without causing excessive stress concentration on the pressing portion 12, avoiding deformation and damage to the pressing portion 12, thereby enhancing the structural strength and durability of the entire device. In this embodiment, the diameter of the pressing portion 12 is selected to be 145mm, and the diameter of the positioning portion 13 is between 29mm and 72.5mm. In other embodiments, it can also be adjusted according to actual conditions, and no excessive restrictions are made here.

[0034] Furthermore, a rounded corner is formed at the contact position between the positioning portion 13 and the pressing portion 12. The rounded corner design effectively reduces the stress concentration point and avoids structural damage and cracks caused by stress concentration during pressing and use. In addition, the rounded corner design reduces the wear of sharp edges and reduces fatigue damage caused by thermal stress and mechanical stress in a high temperature and high pressure environment, thereby extending the service life of the device and reducing the frequency of maintenance and replacement.

[0035] Regarding the mounting portion 11, in order to facilitate the matching of the mounting portion 11 with the gun head, the outer diameter of the mounting portion 11 is slightly smaller than the inner diameter of the gun head, so that the mounting portion 11 can be smoothly inserted into the gun head, reducing the resistance and friction during the installation process, facilitating the operator to quickly complete the installation and removal of the device, and improving work efficiency. Although the outer diameter of the mounting portion 11 is slightly smaller than the inner diameter of the gun head, it can still ensure a sufficiently tight fit, ensuring that the device is not easy to loosen or fall off during the operation process, and enhancing the stability and reliability of the device. It is not only to avoid the outer diameter of the mounting portion 11 being too large and interfering with the inner diameter of the gun head, and unable to be installed on the gun head; but also to avoid the outer diameter of the mounting portion 11 being too small, which is easy to fall from the gun head during operation, thereby affecting the operation process. In this embodiment, the inner diameter of the gun head is 150mm, and the outer diameter of the mounting portion 11 is set to 145mm. In other embodiments, the specific value of the outer diameter of the mounting portion 11 can be determined according to the specific parameters of the inner diameter of the gun head, which is not limited here.

[0036] Specifically, the mounting portion 11 and the pressing portion 12 are coaxially arranged and have the same radius, thereby ensuring the consistency of the axis of the entire shaping body 10, enhancing the overall stability of the structure, reducing the risk of eccentric force, and ensuring the balance and reliability of the shaping body 10 during operation. In addition, this design makes the processing and manufacturing process of the device simpler. Since the mounting portion 11 and the pressing portion 12 have the same radius, they can be integrated on the same processing equipment, reducing processing steps and errors, and improving production efficiency and product quality.

[0037] More specifically, the outer surface of the mounting portion 11 is provided with anti-skid patterns, which can increase the friction when the mounting portion 11 is connected to the gun head, enhance the close fit between the two, reduce the risk of loose connection, ensure the stable installation of the device during efficient operation, and prevent the mounting portion 11 from falling off from the gun head during operation, causing safety hazards. Specifically, fine grid-like anti-skid patterns are engraved on the outer surface of the mounting portion 11, and the anti-skid patterns are staggered to increase the friction on the surface of the mounting portion 11, preventing the mounting portion 11 from slipping out of the gun head. In other embodiments, multiple anti-skid bumps can also be provided on the outer surface of the mounting portion 11, which will not be described in detail here.

[0038] Regarding the pressing part 12, the pressing space 120 includes a plane section 121 and an arc section 122, and the radius of the arc section 122 is greater than or equal to 8 mm and less than or equal to 16 mm. The design of the pressing space 120 includes a plane section 121 and an arc section 122, so that the mud sleeve can be more accurately shaped during the molding process. The existence of the arc section 122 helps to evenly compact the mud sleeve, ensure uniform pressure distribution inside and outside the mud sleeve, alleviate the stress concentration problem generated during the pressing process, avoid cracking or damage to the mud sleeve caused by stress concentration, and improve the density of the mud sleeve and the overall structural strength and durability. Specifically, the radius of the arc section 122 is designed to be between 8 mm and 16 mm, which can effectively guide the flow of mud during the pressing process, so that the mud can fill the entire pressing space 120 more smoothly, reduce the generation of gaps and bubbles, and improve the quality and stability of the mud sleeve. The specific radius parameter of the arc section 122 is determined according to the actual situation on site and is not limited here.

[0039] Specifically, the limiting convex edge 14 is flush with the end of the pressing part 12. The design of the limiting convex edge 14 being flush with the pressing part 12 makes the device more stable during the pressing process, avoids shaking or instability caused by the height difference of the limiting convex edge 14, ensures that the ramming material is uniformly stressed during the pressing process, and improves the molding quality and stability of the mud sleeve. Since the limiting convex edge 14 is flush with the end of the pressing part 12, the operator can quickly align during the installation and disassembly process, reducing the operation steps and time, and improving work efficiency. At the same time, this design also reduces the complexity of the operation and reduces the requirements for the technical level of the operator.

[0040] Furthermore, the shaping body 10 is made of a high-temperature resistant alloy material, which can maintain stable physical and chemical properties in a high-temperature environment without deformation, melting or oxidation. This can effectively cope with the high-temperature operating environment of the blast furnace iron mouth and extend the service life of the device. High-temperature resistant alloy materials usually have excellent mechanical strength and wear resistance, so that the shaping body 10 can maintain high strength and durability under high temperature and high pressure conditions, reduce frequent replacement and maintenance due to wear and damage, and improve the reliability and economy of the device. In the present embodiment, the shaping body 10 is made of a nickel-based alloy, which has excellent high-temperature resistance, oxidation resistance and corrosion resistance. In other embodiments, iron-based high-temperature alloys or cobalt-based high-temperature alloys may also be selected, and no excessive restrictions are made here.

[0041] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blast furnace iron mouth mud sleeve pressing device, the blast furnace iron mouth mud sleeve pressing device is installed on the gun head of the blast furnace mud gun, the gun head is inserted into the ramming inner material to extrude and form a mud sleeve, characterized in that: The blast furnace iron mouth mud sleeve pressing device comprises: A shaping body (10), the shaping body (10) comprising an integrally formed mounting portion (11), a material pressing portion (12) and a positioning portion (13); the mounting portion (11) is a hollow cylindrical structure, the mounting portion (11) can be inserted into the cannon head, the material pressing portion (12) is a solid cylindrical structure, the mounting portion (11) is arranged on one side of the material pressing portion (12), the other side of the material pressing portion (12) is recessed in a direction close to the mounting portion (11) to form a material pressing space (120), the positioning portion (13) is arranged in the material pressing space (120), and the positioning portion (13) is coaxially arranged with the material pressing portion (12); a limiting convex edge (14) is arranged on the outer periphery of the material pressing portion (12), and the limiting convex edge (14) can abut against the end of the cannon head.

2. The blast furnace iron mouth mud sleeve pressing device according to claim 1, characterized in that: The cross section of the positioning portion (13) is circular.

3. The blast furnace iron mouth mud sleeve pressing device according to claim 2, characterized in that: The diameter of the positioning portion (13) is greater than or equal to 1 / 5 of the diameter of the pressing portion (12) and less than or equal to 1 / 2 of the diameter of the pressing portion (12).

4. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: A rounded corner is formed at the contact position between the positioning portion (13) and the pressing portion (12).

5. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: The outer diameter of the mounting portion (11) is slightly smaller than the inner diameter of the gun head.

6. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: The mounting portion (11) and the material pressing portion (12) are coaxially arranged and have the same radius.

7. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: The outer surface of the mounting portion (11) is provided with anti-slip grooves.

8. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: The pressing space (120) comprises a plane section (121) and an arc section (122), and the radius of the arc section (122) is greater than or equal to 8 mm and less than or equal to 16 mm.

9. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: The limiting convex edge (14) is flush with the end of the pressing portion (12).

10. The blast furnace iron mouth mud sleeve pressing device according to any one of claims 1 to 3, characterized in that: The shaping body (10) is made of a high temperature resistant alloy material.

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