A blast device for a vanadium-titanium smelting blast furnace

Abstract

The application provides a blast device for a vanadium-titanium smelting blast furnace, and relates to the technical field of blast furnace smelting. The blast device comprises a blast pipe and a support frame used for detachable connection with a furnace shell. A lifting support assembly is arranged on the support frame and used for supporting the blast pipe. The lifting support assembly comprises a bracket and an adjusting screw. Threaded holes matched with the adjusting screw are arranged on the support frame. The adjusting screw is threadedly connected with the support frame through the threaded holes. The upper end of the adjusting screw is hingedly connected with the bottom of the bracket through a spherical hinge support. The bracket is provided with an arc-shaped supporting surface matched with the outer wall of the blast pipe. The bracket of the lifting support assembly effectively supports the blast pipe, significantly disperses the dead load of the blast pipe, greatly reduces the stress at the flange connection, slows down the decay rate of the bolt pretightening force, improves the structural stability of the blast pipe after installation, the height of the bracket can be flexibly adjusted by the adjusting screw, the support for the blast pipe is ensured to be in place, and the use performance of the device is improved.

Description

Technical Field

[0001] This application relates to the field of blast furnace smelting technology, and more specifically, to a blower device for a vanadium-titanium smelting blast furnace. Background Technology

[0002] The blast furnace system for smelting vanadium-titanium magnetite is equipped with a blower specifically designed to provide heat and power for the blast furnace smelting process. Because damage to the tuyere sleeves frequently occurs during blast furnace production, regular maintenance and replacement of damaged sleeves are necessary.

[0003] To ensure proper installation of the blast furnace blasting system, patent CN221644975U discloses a position adjustment mechanism for the blast furnace blasting system. This mechanism includes a blast furnace blasting system with pipes A2 and A3, and a direct-blowing pipe. Two adjusting screws are horizontally fixed to the inner wall of pipe A3 and the furnace shell opposite it. The adjusting screws have left-hand and right-hand helical structures, respectively. An adjusting nut is attached to each adjusting screw, and the two nuts are coaxially fixed to both ends of an elongated oval adjusting frame. By rotating the adjusting frame with a fork or pipe wrench, the two adjusting screws are moved closer or further apart, thus adjusting the working position of the blast furnace blasting system. This mechanism allows for forward and backward adjustments as needed, is reusable, and requires only one operator to accurately reset deformed equipment. It eliminates safety hazards, significantly improves work efficiency, and minimizes the risk of accidents. It can be widely used for the quick and convenient installation of blast furnace blasting equipment during blast furnace maintenance and has significant potential for widespread application.

[0004] However, the above-mentioned mechanism only fixes the A3 pipe by means of the inner wall of the A3 pipe and the adjusting screw on the furnace shell opposite it, along with two adjusting nuts and an elongated adjusting frame. In actual use, the A3 pipe is only connected to the direct blowing pipe below through the flange. The flange connection directly bears the entire weight of the direct blowing pipe, which easily leads to an accelerated rate of decrease in bolt preload and poor stability. Summary of the Invention

[0005] The purpose of this application is to provide a blower for a vanadium-titanium smelting blast furnace, which can solve the technical problems mentioned in the background art.

[0006] This application provides a blower for a vanadium-titanium smelting blast furnace, including a direct blower pipe and a support frame for detachable connection with the furnace shell. The support frame is provided with a lifting support assembly, which is used to support the direct blower pipe.

[0007] The lifting support assembly includes a bracket and an adjusting screw. The support bracket is provided with a threaded through hole adapted to the adjusting screw. The adjusting screw is threadedly connected to the support bracket through the threaded through hole. The upper end of the adjusting screw is hinged to the bottom of the bracket through a spherical hinge support. The bracket is provided with an arc-shaped support surface adapted to the outer wall of the straight blowing pipe.

[0008] Furthermore, a set of guide sleeves are fixedly provided at intervals on the support frame, and a matching guide post is provided inside the guide sleeve. The guide post movably passes through the guide sleeve, and the upper end of the guide post is fixedly connected to the bottom of the bracket.

[0009] Furthermore, the arc-shaped support surface of the bracket is embedded with a first heat insulation buffer layer, and the side of the first heat insulation buffer layer that contacts the direct blowing pipe is provided with a plurality of first protrusions that are radially aligned with the direct blowing pipe.

[0010] Furthermore, a pair of clamping assemblies are symmetrically provided on the bracket. The two clamping assemblies cooperate to clamp the straight blow pipe. The clamping assembly includes a clamping block and a clamping screw. The bracket is provided with a threaded through hole adapted to the clamping screw. The clamping screw is threadedly connected to the bracket through the threaded through hole, and the end of the clamping screw abuts against the clamping block.

[0011] Furthermore, the clamping block has a limiting insertion hole on the side near the clamping screw that is adapted to the clamping screw, and the end of the clamping screw can be inserted into the limiting insertion hole.

[0012] Furthermore, a second heat insulation buffer layer is provided on the side of the clamp block near the straight blowing pipe, and a plurality of second protrusions are provided at intervals on the side of the second heat insulation buffer layer that contacts the straight blowing pipe.

[0013] Furthermore, both the first and second heat insulation buffer layers are made of high-temperature resistant rubber, and the surfaces of the first and second heat insulation buffer layers are provided with a 0.5-1mm thick wear-resistant ceramic coating.

[0014] Furthermore, the support frame is provided with a connecting plate, and the connecting plate is evenly provided with a plurality of connecting through holes.

[0015] The beneficial effects of this utility model are:

[0016] Compared to the prior art where the direct-blowing pipe is only connected to the A3 pipe via a flange, resulting in the flange connection bearing all its own weight and causing rapid decay of bolt preload and poor stability, this invention provides effective support for the direct-blowing pipe through the bracket of the lifting support assembly. This significantly disperses the self-weight load of the direct-blowing pipe, greatly reduces the stress at the flange connection, slows down the decay rate of bolt preload, and improves the structural stability of the direct-blowing pipe after installation. At the same time, the adjusting screw can flexibly adjust the height of the bracket to ensure proper support for the direct-blowing pipe and improve the performance of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0019] Figure 2 These are cross-sectional views of some embodiments of this application;

[0020] Figure 3 This is a magnified structural diagram of point A in convex structure 2;

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Straight-blowing pipe; 2. Support frame; 3. Lifting support assembly; 31. Bracket; 32. Adjusting screw; 4. Spherical hinge support; 5. Guide sleeve; 6. Guide post; 7. First heat insulation buffer layer; 71. First protrusion; 8. Clamping assembly; 81. Clamping block; 811. Limiting insertion hole; 82. Clamping screw; 9. Second heat insulation buffer layer; 91. Second protrusion; 10. Connecting plate; 101. Connecting through hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances. Specific implementation examples:

[0030] like Figure 1 and Figure 2As shown, this application provides a blower for a vanadium-titanium smelting blast furnace, including a direct-blowing pipe 1 and a support frame 2 for detachable connection to the furnace shell. The support frame 2 is equipped with a lifting support assembly 3 for supporting the direct-blowing pipe 1. The lifting support assembly 3 includes a bracket 31 and an adjusting screw 32. The support frame 2 has a threaded through hole adapted to the adjusting screw 32. The adjusting screw 32 is threadedly connected to the support frame 2 through the threaded through hole. The upper end of the adjusting screw 32 is hinged to the bottom of the bracket 31 through a spherical hinge support 4. The bracket 31 has an arc-shaped support surface adapted to the outer wall of the direct-blowing pipe 1. The spherical hinge support 4 is a universal ball structure, which is prior art and will not be described in detail here. This blower for a vanadium-titanium smelting blast furnace provides a stable support foundation through the support frame 2 detachably connected to the furnace shell, utilizing the threaded through hole on the support frame 2 and the adjusting screw... The screw 32 is threaded, and rotating the adjusting screw 32 can drive the bracket 31 to rise and fall vertically, thereby adjusting the support height of the direct-blowing pipe 1. The arc-shaped support surface of the bracket 31 is adapted to the outer wall of the direct-blowing pipe 1, which can fit snugly to support the direct-blowing pipe 1, ensuring that the bracket 31 and the direct-blowing pipe 1 always maintain stable contact, thereby distributing the weight of the direct-blowing pipe 1 to the support frame 2, avoiding the weight of the direct-blowing pipe 1 being entirely borne by the flange connection at the bottom of the A3 pipe in the prior art. This device effectively supports the direct-blowing pipe 1 through the bracket 31 of the lifting support assembly 3, significantly dispersing the self-weight load of the direct-blowing pipe 1, greatly reducing the stress at the flange connection, slowing down the decay rate of the bolt preload, and improving the structural stability of the direct-blowing pipe 1 after installation. At the same time, the adjusting screw 32 can flexibly adjust the height of the bracket 31 to ensure that the support of the direct-blowing pipe 1 is in place, improving the performance of the device.

[0031] like Figure 1 and Figure 2 As shown, a set of guide sleeves 5 are fixedly installed at intervals on the support frame 2. The guide sleeves 5 are equipped with matching guide posts 6. The guide posts 6 movably pass through the guide sleeves 5. The upper end of the guide posts 6 is fixedly connected to the bottom of the bracket 31. When the adjusting screw 32 drives the bracket 31 to rise and fall, the guide posts 6 move up and down synchronously with the bracket 31 along the axis of the guide sleeves 5. By using the radial limiting effect of the guide sleeves 5 on the guide posts 6, the horizontal displacement of the bracket 31 is restricted, ensuring that the bracket 31 moves stably only in the vertical direction. This enhances the anti-overturning ability of the bracket 31 and improves the structural stability and operational reliability of the device.

[0032] like Figure 2As shown, the arc-shaped support surface of the bracket 31 is embedded with a first heat insulation buffer layer 7. The side of the first heat insulation buffer layer 7 that contacts the direct blowing pipe 1 is provided with a plurality of first protrusions 71 that are radially aligned with the direct blowing pipe 1. The first heat insulation buffer layer 7 effectively blocks the high temperature of the direct blowing pipe 1 from being transmitted to the bracket 31 and the support frame 2, reducing the thermal damage of the support structure to the high temperature and extending the service life of the components. At the same time, the elastic properties of the first heat insulation buffer layer 7 combined with the line contact design of the first protrusions 71 can not only efficiently buffer the vibration of the direct blowing pipe 1 and reduce the impact of vibration on the connection between the bracket 31 and the direct blowing pipe 1, but also further enhance the heat insulation effect by reducing the contact area.

[0033] like Figure 1-3 As shown, a pair of clamping components 8 are symmetrically arranged on the bracket 31. The two clamping components 8 cooperate to clamp the straight blow pipe 1. The clamping component 8 includes a clamping block 81 and a clamping screw 82. The bracket 31 is provided with a threaded through hole adapted to the clamping screw 82. The clamping screw 82 is threadedly connected to the bracket 31 through the threaded through hole, and the end of the clamping screw 82 abuts against the clamping block 81. The pair of clamping components 8 symmetrically arranged on the bracket 31 allow the clamping screw 82 to rotate axially along the threaded through hole through the threaded through hole on the bracket 31. Forward and backward movement; when the clamping screw 82 is rotated, its end abuts against the clamping block 81 and pushes the clamping block 81 to move towards the straight blowing pipe 1. The clamping screws 82 on both sides are adjusted synchronously, causing the two clamping blocks 81 to move closer to each other. The clamping force is generated by the contact between the clamping block 81 and the outer wall of the straight blowing pipe 1, thereby firmly clamping the straight blowing pipe 1 on the arc-shaped support surface of the bracket 31. This can effectively prevent the straight blowing pipe 1 from being displaced or shaking due to vibration during operation. In conjunction with the support of the bracket 31, the overall structural stability of the straight blowing pipe 1 after installation is further improved.

[0034] like Figure 3 As shown, the clamping block 81 has a limiting insertion hole 811 on the side near the clamping screw 82 that is adapted to the clamping screw 82. The end of the clamping screw 82 can be inserted into the limiting insertion hole 811. When the clamping screw 82 is rotated to push the clamping block 81, the end of the clamping screw 82 can be inserted into the limiting insertion hole 811. The circumferential limiting effect of the inner wall of the insertion hole on the end of the clamping screw 82 prevents the clamping screw 82 from radially shifting due to the reaction force during the application of force. This ensures that the thrust of the clamping screw 82 can be stably transmitted to the clamping block 81 along the axial direction, so that the clamping block 81 always moves smoothly along the radial direction of the straight blowing pipe 1 to achieve the clamping action.

[0035] like Figure 3As shown, a second heat insulation buffer layer 9 is provided on the side of the clamping block 81 near the straight blowing pipe 1. Multiple second protrusions 91 are provided at intervals on the side of the second heat insulation buffer layer 9 that contacts the straight blowing pipe 1. The second heat insulation buffer layer 9 effectively reduces the thermal impact of the high temperature of the straight blowing pipe 1 on the clamping block 81 and the clamping screw 82, and extends the service life of the clamping assembly 8. The design of the second protrusions 91 ensures the clamping stability while reducing heat transfer through line contact, thus enhancing the heat insulation effect.

[0036] like Figure 3 As shown, both the first heat insulation buffer layer 7 and the second heat insulation buffer layer 9 are made of high-temperature resistant rubber. The surfaces of the first heat insulation buffer layer 7 and the second heat insulation buffer layer 9 are coated with a 0.5-1mm thick wear-resistant ceramic coating. The high-temperature resistant rubber material ensures the structural stability and elastic buffering performance of the heat insulation buffer layer in high-temperature environments, effectively blocking heat transfer and absorbing vibration impact, and preventing damage caused by rigid contact between the direct blowing pipe 1 and the bracket 31 and clamping block 81. The wear-resistant ceramic coating is 0.75mm thick. The first protrusion 71 and the first heat insulation buffer layer 7 are integrally molded, and the second protrusion 91 and the second heat insulation buffer layer 9 are integrally molded. The wear-resistant ceramic coating improves the wear resistance of the first protrusion 71 and the second protrusion 91 and reduces wear and tear during long-term use.

[0037] like Figure 1 and Figure 2 As shown, the support frame 2 is provided with a connecting plate 10, and the connecting plate 10 is evenly provided with a plurality of connecting through holes 101. In use, the furnace shell is embedded with a fixing bolt that matches the connecting through hole 101 at the corresponding position. The fixing bolt passes through the connecting through hole 101, and the connecting plate 10 is fixedly connected to the furnace shell by the cooperation of the nut and the fixing bolt. In actual use, the direct blowing pipe 1 in the air supply device of this application is first connected to the lower flange of the A3 pipe in the prior art, and then the connecting plate 10 is connected to the furnace shell. Finally, the support height of the support assembly is adjusted, and then the clamping assembly 8 is adjusted to clamp the direct blowing pipe 1.

[0038] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A blower for a vanadium-titanium smelting blast furnace, characterized in that: It includes a direct-blowing pipe and a support frame for detachable connection with the furnace shell, wherein the support frame is provided with a lifting support assembly for supporting the direct-blowing pipe; The lifting support assembly includes a bracket and an adjusting screw. The support bracket is provided with a threaded through hole adapted to the adjusting screw. The adjusting screw is threadedly connected to the support bracket through the threaded through hole. The upper end of the adjusting screw is hinged to the bottom of the bracket through a spherical hinge support. The bracket is provided with an arc-shaped support surface adapted to the outer wall of the straight blowing pipe.

2. The blast furnace blowing device for vanadium-titanium smelting according to claim 1, characterized in that: A set of guide sleeves are fixedly installed at intervals on the support frame. The guide sleeves are equipped with matching guide posts. The guide posts movably pass through the guide sleeves, and the upper end of the guide posts is fixedly connected to the bottom of the bracket.

3. The blast furnace blowing device for vanadium-titanium smelting according to claim 1, characterized in that: The bracket has a first heat insulation buffer layer embedded in its arc-shaped support surface. The side of the first heat insulation buffer layer that contacts the direct blowing pipe has a plurality of first convex strips that are radially aligned with the direct blowing pipe.

4. The blast furnace blowing device for vanadium-titanium smelting according to claim 3, characterized in that: The bracket is symmetrically provided with a pair of clamping components. The two clamping components cooperate to clamp the straight blow pipe. The clamping components include a clamping block and a clamping screw. The bracket is provided with a threaded through hole adapted to the clamping screw. The clamping screw is threadedly connected to the bracket through the threaded through hole, and the end of the clamping screw abuts against the clamping block.

5. The blast furnace blowing device for vanadium-titanium smelting according to claim 4, characterized in that: The clamping block has a limiting insertion hole on the side near the clamping screw that is adapted to the clamping screw, and the end of the clamping screw can be inserted into the limiting insertion hole.

6. The blast furnace blowing device for vanadium-titanium smelting according to claim 4, characterized in that: The clamping block is provided with a second heat insulation buffer layer on the side near the straight blowing pipe, and a plurality of second protrusions are provided at intervals on the side of the second heat insulation buffer layer that contacts the straight blowing pipe.

7. The blast furnace blowing device for vanadium-titanium smelting according to claim 6, characterized in that: Both the first and second heat insulation buffer layers are made of high-temperature resistant rubber, and the surfaces of the first and second heat insulation buffer layers are provided with a 0.5-1mm thick wear-resistant ceramic coating.

8. The blast furnace blowing device for vanadium-titanium smelting according to claim 4, characterized in that: The support frame is provided with a connecting plate, and the connecting plate is evenly provided with a plurality of connecting through holes.

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