Adjustable oxygen lance mounting and positioning device for oxygen-enriched smelting furnace

Abstract

The utility model provides adjustable oxygen lance installation positioning device of oxygen -enriched smelting furnace, adjustable oxygen lance installation positioning device of oxygen -enriched smelting furnace, including device body, the device body one end is provided with elastic clamping cavity, the elastic clamping cavity both ends are installed with fixed plate, the oxygen lance is connected fixed in elastic clamping cavity interior, the fixed plate surface is provided with fixed hole. The utility model solves the problem that traditional rigid clamping device cannot adapt to different outer diameter oxygen lance, single group fixed plate is easy to loosen. Through the elastic deformation ability of elastic clamping cavity, it can adapt to oxygen lance of various outer diameter specifications, and the positioning device does not need to be replaced as a whole when replacing oxygen lance model, which significantly reduces equipment investment cost and shortens production downtime; at the same time, the fixed plate installed equidistantly in multiple groups cooperates with fastener, can clamp and fix oxygen lance from multiple points, avoid the loosening of bolt caused by long-term high temperature vibration, improve the fixing stability of oxygen lance, and guarantee oxygen injection precision.

Description

Technical Field

[0001] This utility model relates to the field of oxygen lance installation and positioning technology, and in particular to an adjustable oxygen lance installation and positioning device for an oxygen-enriched smelting furnace. Background Technology

[0002] In oxygen-enriched smelting furnace production operations, the oxygen lance, as the core oxygen supply component, directly affects smelting efficiency and operational safety due to the stability of its installation and positioning.

[0003] The current mainstream oxygen lance installation and positioning devices in the industry have significant flaws in their clamping and fixing structure design: most devices use a rigid clamping cavity to fix the oxygen lance, with a fixed cavity size and no elastic adjustment capability, making them unsuitable for oxygen lances of different outer diameters. If the oxygen lance model needs to be changed, the entire positioning device must be replaced, increasing equipment investment costs and extending production downtime. Furthermore, the existing clamping and fixing components are mostly single-plate designs, directly locked with bolts. Over time, high-temperature vibrations can cause these bolts to loosen, leading to oxygen lance displacement. This not only affects oxygen injection accuracy but may also cause the oxygen lance to collide with the furnace wall, posing a risk of equipment damage.

[0004] Therefore, it is necessary to provide an adjustable oxygen lance installation and positioning device for oxygen-enriched smelting furnaces to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides an adjustable oxygen lance installation and positioning device for an oxygen-enriched smelting furnace, which solves the problems in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides an adjustable oxygen lance installation and positioning device for an oxygen-enriched smelting furnace, comprising a device body as the overall basic structure, an elastic clamping cavity at one end of the device body, an oxygen lance being placed inside the elastic clamping cavity by a snap-fit ​​method with the outer wall of the oxygen lance fitting against the inner wall of the elastic clamping cavity, fixing plates installed at both ends of the elastic clamping cavity, and multiple fixing plates being evenly distributed on the surface of the device body, with fixing holes on the surfaces of the upper and lower corresponding fixing plates, and fasteners (such as bolts) passing through the fixing holes of the upper and lower fixing plates to connect and fix them, and a limiting component is also installed at the end of the device body away from the opening of the elastic clamping cavity; wherein, the spacing between the upper and lower fixing plates can be changed by tightening or loosening the fasteners, thereby squeezing or releasing the elastic clamping cavity to cause it to deform, thereby adapting to oxygen lances of different outer diameters to achieve clamping and fixing, multiple equidistant fixing plates can disperse the clamping force from multiple points, reducing the loosening problem caused by excessive force on a single fixing plate, and the limiting component plays an auxiliary positioning role for the oxygen lance, working together with the elastic clamping cavity and fixing plates to ensure the stability of the oxygen lance.

[0007] Preferably, the core component of the limiting assembly is a mounting plate. The limiting rod and the adjusting rod are both fixedly mounted on the same surface of the mounting plate and are arranged side by side. The device body has an adjusting cavity at one end corresponding to the limiting assembly. The outer diameter of the adjusting rod is equal to the inner diameter of the adjusting cavity. The adjusting rod extends into the adjusting cavity by sliding insertion, and the end of the adjusting rod inside the adjusting cavity is fixedly connected to the bottom of the adjusting cavity by a spring. When the oxygen lance vibrates or displaces, if it touches the limiting rod, the limiting rod can initially prevent the oxygen lance from shifting. If the vibration force causes the adjusting rod to slide along the adjusting cavity, the adjusting rod will compress or stretch the spring. The spring absorbs the vibration energy through elastic deformation and generates a reverse elastic force to push the adjusting rod back to its original position, thereby driving the limiting rod back to its original position, realizing the buffering of oxygen lance vibration and the correction of displacement.

[0008] Preferably, multiple fixing plates are installed, and all fixing plates are installed on the surface of the device body in a detachable or fixed manner. All fixing plates are arranged at equal intervals along the axial direction of the device body (oxygen lance insertion direction). Every two upper and lower corresponding fixing plates form a clamping unit. Multiple clamping units correspond to different positions of the elastic clamping cavity. Multiple equidistant fixing plates can clamp the oxygen lance from different axial positions of the elastic clamping cavity. Compared with a single fixing plate, it can distribute the clamping force more evenly, avoid clamping failure caused by local bolt loosening under long-term high temperature vibration, and enhance the wrapping of the oxygen lance by the elastic clamping cavity, further improving the stability of the oxygen lance fixation.

[0009] Preferably, the adjusting rod has a cylindrical structure, and the adjusting cavity is a cylindrical cavity adapted to the adjusting rod. The outer diameter of the adjusting rod is exactly equal to the inner diameter of the adjusting cavity. The adjusting rod is inserted into the adjusting cavity in a gapless sliding manner, and the two form a tightly fitted sliding pair. The equal diameter design of the adjusting rod and the adjusting cavity can prevent radial wobbling of the adjusting rod during sliding, ensuring that the adjusting rod always moves along the axial direction of the adjusting cavity, thereby ensuring the stability of the elastic deformation direction of the spring, making the buffering and positioning effect of the limiting component on the oxygen gun more accurate, and preventing the limiting failure caused by the shaking of the adjusting rod.

[0010] Preferably, two sets of limiting components are installed, and the two sets of limiting components are fixed to both ends of the device body (both sides along the radial direction of the oxygen lance) in a symmetrical manner. The mounting plate of each set of limiting components is in contact with the surface of the device body, and the limiting rods of both sets of limiting components face the direction of the oxygen lance, forming a bidirectional limiting structure on both sides of the oxygen lance. The two sets of symmetrical limiting components can work simultaneously from both sides of the oxygen lance. When the oxygen lance deviates to either side, the limiting rod on the corresponding side can block it in time. At the same time, the adjusting rods and springs on both sides can jointly buffer the vibration of the oxygen lance, avoid uneven force caused by unilateral limiting, further reduce the risk of the oxygen lance colliding with the furnace wall, and improve positioning stability.

[0011] Preferably, a fixing block is installed at one end of the device body. The fixing block is a block structure and is fixedly installed at the end of the device body away from the elastic clamping cavity by welding or bolt connection. The surface of the fixing block has a through-hole mounting hole, the diameter of which is adapted to the connecting parts (such as bolts) of the preset mounting position of the oxygen-enriched melting furnace. Through the mounting hole of the fixing block, the device body can be connected and fixed to the mounting position of the oxygen-enriched melting furnace. The fixing block, as the connection medium between the device body and the melting furnace, can transfer the force of the device body to the melting furnace, avoid the oxygen lance positioning deviation caused by the device body's own unstable fixation, and provide basic support for the stable operation of the entire device.

[0012] Compared with related technologies, the adjustable oxygen lance installation and positioning device for the oxygen-enriched smelting furnace provided by this utility model has the following advantages: Compared with existing technologies, this technology solves the problems of traditional rigid clamping devices being unable to adapt to oxygen lances of different outer diameters and the ease with which single-set fixing plates can loosen. Through the elastic deformation capability of the elastic clamping cavity, it can adapt to oxygen lances of various outer diameters. When changing oxygen lance models, there is no need to replace the entire positioning device, significantly reducing equipment investment costs and shortening production downtime. Simultaneously, multiple equidistantly installed fixing plates, along with fasteners, can clamp and fix the oxygen lance from multiple points, preventing bolt loosening caused by long-term high-temperature vibration, improving the stability of the oxygen lance, and ensuring oxygen injection accuracy.

[0013] Compared with existing technologies, the risk of oxygen lance deviation is further mitigated through the buffering and positioning functions of the limiting component. The adjusting rod can slide along the adjusting cavity, and in conjunction with the elastic restoring characteristics of the spring, it can buffer the high-temperature vibrations generated during oxygen lance operation, reducing the impact of vibration on oxygen lance positioning. At the same time, the limiting rod can restrict the lateral displacement of the oxygen lance, preventing the oxygen lance from colliding with the furnace wall due to excessive vibration deviation, reducing the risk of equipment damage, and balancing operational safety and smelting efficiency.

[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0015] Figure 1 A schematic diagram of the adjustable oxygen lance mounting and positioning device for the oxygen-enriched melting furnace provided by this utility model. Figure 2 A schematic diagram of the fixing plate structure of the adjustable oxygen lance mounting and positioning device for the oxygen-enriched melting furnace provided by this utility model. Figure 3 A schematic diagram of the fixing block structure of the adjustable oxygen lance mounting and positioning device for the oxygen-enriched melting furnace provided by this utility model. Figure 4 A schematic diagram of the adjusting rod structure of the adjustable oxygen lance mounting and positioning device for the oxygen-enriched melting furnace provided by this utility model.

[0016] Numbering on the map: 1. Device body; 2. Elastic clamping cavity; 3. Fixing block; 4. Fixing plate; 5. Limiting component; 6. Fastener; 7. Adjusting cavity; 8. Mounting plate; 9. Limiting rod; 10. Adjusting rod; 11. Spring; 12. Mounting hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0018] Please refer to the following: Figure 1-4 The adjustable oxygen lance installation and positioning device for an oxygen-enriched smelting furnace includes a device body 1 as the overall basic structure. First, the device body 1 is machined, and a through-type elastic clamping cavity 2 is created through milling. A high-temperature resistant elastic rubber layer is adhered to the inner wall of the cavity. Then, fixing plates 4 are installed at preset positions on the device body 1 corresponding to both ends of the elastic clamping cavity 2, using a welding or bolt-detachable connection method. This ensures that multiple fixing plates 4 are equidistantly distributed along the axial direction of the device body 1 (oxygen lance insertion direction), and that coaxial fixing holes are drilled on the surfaces of the upper and lower fixing plates 4. Finally, the limiting component 5 is connected to the pre-drilled holes on the mounting plate 8 using bolts. The oxygen lance is installed at the end of the device body 1 away from the opening of the elastic clamping cavity 2. Finally, the device body 1 is fixed to the smelting furnace by the fixing block 3. After inserting the oxygen lance, high-temperature resistant stainless steel bolts and anti-loosening nuts (fasteners 6) are passed through the fixing holes of the upper and lower fixing plates 4 and tightened by threaded engagement, so that the upper and lower fixing plates 4 are close to each other, squeezing the rubber layer of the elastic clamping cavity 2 to deform. The outer wall of the oxygen lance is tightly attached to the rubber layer by an interference fit, which solves the adaptation problem of traditional rigid clamping. Multiple sets of equidistant fixing plates 4 distribute the force, and the anti-loosening nuts enhance the anti-loosening effect. Together with the limiting component 5, a "clamping + limiting" double fixation is formed, which limits the radial and axial displacement of the oxygen lance, ensures the oxygen injection accuracy, and reduces equipment costs and downtime. Example

[0019] Please refer to the following: Figure 1-4The limiting component 5 is centered on the mounting plate 8. First, a cylindrical stainless steel limiting rod 9 and an adjusting rod 10 are vertically fixed on the same surface of the mounting plate 8 by welding or threading. The two are distributed side by side along the length of the mounting plate 8. Then, a high-temperature resistant cylindrical helical spring 11 is fixed to one end of the adjusting rod 10 by welding or hooking. The adjusting rod 10 and the spring 11 are inserted into the cylindrical adjusting cavity 7 preset in the device body 1. The outer diameter of the adjusting rod 10 is exactly equal to the inner diameter of the adjusting cavity 7. The other end of the spring 11 is welded to the bottom of the adjusting cavity 7. Finally, the mounting plate 8 is fixed to the preset position of the device body 1 by bolts to ensure that the limiting rod 9 faces the oxygen gun. When the oxygen lance vibrates at high temperature and causes radial displacement, it first contacts the limiting rod 9 and initially deviates due to its rigid blocking. When the vibration force is large, the oxygen lance pushes the limiting rod 9 to drive the mounting plate 8 and the adjusting rod 10 to slide along the adjusting cavity 7. The compression spring 11 absorbs 30%-50% of the vibration force. After the vibration weakens, the spring 11 releases potential energy to push the adjusting rod 10 to reset, realizing "rigid blocking + elastic buffering", solving the oxygen lance deviation problem and reducing the risk of equipment damage. Example

[0020] Please refer to the following: Figure 1-4 The number of fixing plates 4 is 4-6 sets. First, mark the equidistant and corresponding installation positions on the surface of the device body 1, and then select the installation method according to the scenario: for long-term fixed scenarios, use arc welding; for scenarios that need to be replaced, use bolts through pre-drilled holes for detachable connection. After installation, use a level to calibrate the levelness of the fixing plates 4 to ensure that they are parallel vertically, and check the coaxiality of the fixing holes. All fixing plates 4 are arranged equidistantly along the axial direction of the device body 1. Every two upper and lower corresponding fixing plates 4 form a set of clamping units, corresponding to different axial positions of the elastic clamping cavity 2 from the opening end to the end. In use, multiple sets of clamping units apply clamping force from multiple points along the oxygen gun axis, so that the outer wall of the oxygen gun is uniformly wrapped. The force on a single set of fixing plates 4 is reduced to 1 / 4-1 / 6, avoiding bolt slippage and loosening due to high temperature vibration. At the same time, it enhances the fit between the elastic clamping cavity 2 and the oxygen gun, reduces gaps, limits radial sway, and adapts to different outer diameter oxygen guns with elastic deformation, improving fixing stability and preventing clamping failure and displacement. Example

[0021] Please refer to the following: Figure 1-4The adjusting rod 10 is a solid cylindrical structure. First, the adjusting rod 10 and the cylindrical adjusting cavity 7 on the device body 1 are machined to ensure a hole-based transition fit with completely equal outer diameters. Then, graphite-based high-temperature resistant grease is applied to the surface of the adjusting rod 10, and it is inserted into the adjusting cavity 7 to test its sliding flexibility. During operation, the precise transition fit eliminates radial clearance, ensuring smooth axial sliding of the adjusting rod 10 and preventing uneven force on the spring 11. The spring 11 always deforms axially along the adjusting cavity 7, and the elastic restoring force is precisely applied to the adjusting rod 10, driving the limiting rod 9 to return to its stable position. This ensures accurate buffering and positioning of the limiting component 5, preventing limit failure due to shaking of the adjusting rod 10. Example

[0022] Please refer to the following: Figure 1-4 Two sets of limiting components 5 are installed. First, using the axis of the elastic clamping cavity 2 of the device body 1 as a reference, the two sets of symmetrical installation positions are marked. The mounting plate 8 of the first set of limiting components 5 is aligned with the marked position and fixed with bolts, with the limiting rod 9 facing the oxygen lance. Then, the distance between the first set of limiting rods 9 and the axis of the oxygen lance is measured with calipers. The second set is installed according to the symmetrical reference, ensuring that the distances between the two sets of limiting rods 9 and the axis of the oxygen lance are equal. The gap between the two sets of limiting rods 9 and the outer wall of the oxygen lance is tested after the oxygen lance is inserted. If it is uneven, it is adjusted. Finally, a bidirectional limiting structure is formed along both sides of the oxygen lance's radial direction, with the axis of the limiting rod 9 intersecting perpendicularly with the axis of the oxygen lance. During operation, when the oxygen lance shifts to the left, the left limiting rod 9 blocks it, and the adjusting rod 10 compresses the spring 11 to absorb vibration. When it shifts to the right, the right component works in the same way. The buffering forces of the two sets of springs 11 are symmetrical, so that the reverse reset force of the oxygen lance is balanced, preventing tilting and ensuring operational safety. Example

[0023] Please refer to the following: Figure 1-4 The device body 1 is equipped with a fixing block 3 at one end. First, the fixing block 3 is fixed at a preset position on the device body 1: for long-term fixed scenarios, submerged arc welding is used; for scenarios requiring position adjustment, bolts are used for detachable connection through pre-drilled holes. Ensure that the through-hole 12 on the surface of the fixing block 3, which is drilled and tapped, has an axis parallel to the axis of the elastic clamping cavity 2 of the device body 1, and the hole diameter is adapted to the M16-M20 stainless steel bolts at the preset installation position of the smelting furnace. Then, the device body 1 is moved to the oxygen lance installation area of ​​the smelting furnace, the mounting hole 12 of the fixing block 3 is aligned with the bolt hole of the smelting furnace, and the stainless steel bolts are tightened with anti-loosening nuts. Finally, the level of the device body 1 is calibrated with a level to make the axis of the elastic clamping cavity 2 coaxial with the axis of the oxygen lance channel of the smelting furnace. The fixing block 3 acts as a "connecting bridge" to transfer the force on the device body 1 to the rigid structure of the smelting furnace, preventing the device body 1 from tilting; the symmetrical mounting holes 12 ensure that the fixing block 3 is subjected to balanced force, preventing local stress concentration and deformation; the axis parallelism ensures that the oxygen lance axis is consistent with the furnace body channel, providing a stable foundation for the elastic clamping cavity 2 and the limiting component 5, and ensuring the positioning accuracy of the device.

[0024] The working principle of the adjustable oxygen lance mounting and positioning device for the oxygen-enriched melting furnace provided by this utility model is as follows: First, align the device body 1 with the preset installation position of the oxygen-enriched melting furnace through the mounting hole 12 on the surface of the fixing block 3 at one end of the device body 1. Use the connector to pass through the mounting hole 12 to complete the overall fixation, laying the foundation for the positioning of the oxygen lance. Then, insert the oxygen lance into the elastic clamping cavity 2 of the device body 1, so that the outer wall of the oxygen lance is initially attached to the inner wall of the elastic clamping cavity 2. Adjust the fasteners 6 of the upper and lower corresponding fixing plates 4 according to the outer diameter of the oxygen lance. Tightening the fasteners 6 will drive the upper and lower fixing plates 4 to move closer, compressing the elastic clamping cavity 2 to deform and tightly fit the outer wall of the oxygen lance. Multiple sets of equidistant fixing plates 4 clamp synchronously from different axial points to avoid bolt loosening caused by high temperature vibration. When the oxygen lance is working, the symmetrical limiters at both ends of the device... Component 5 functions when the oxygen lance tends to displace due to high-temperature vibration. The limiting rod 9 first restricts its lateral displacement. If the vibration force is large, the oxygen lance pushes the adjusting rod 10 to slide inward along the adjusting cavity 7 and compresses the spring 11. The spring 11 absorbs the vibration energy through elastic deformation to form a buffer. After the vibration weakens, the spring 11 resets and pushes the adjusting rod 10 and the limiting rod 9 back to their initial positions. When the oxygen lance model needs to be changed, the fastener 6 on the fixing plate 4 is loosened. The elastic clamping cavity 2 returns to its initial shape due to its own elasticity. After removing the old oxygen lance, the new specification oxygen lance is inserted. The fastener 6 is readjusted so that the elastic clamping cavity 2 is adapted to the outer diameter of the new oxygen lance to complete the fixation. The entire process does not require disassembly or replacement of the device body 1.

[0025] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. Adjustable oxygen lance mounting positioning device for oxygen-rich smelting furnaces, comprising a device body (1), characterized in that, The device body (1) has an elastic clamping cavity (2) at one end, and fixed plates (4) are installed at both ends of the elastic clamping cavity (2). The oxygen gun is clamped and fixed inside the elastic clamping cavity (2). Fixed holes are opened on the surface of the fixed plate (4). The upper and lower fixed plates (4) are fixed together by fasteners (6). A limit component (5) is installed at one end of the device body (1).

2. An adjustable oxygen lance mounting positioning device for an oxygen-enriched smelting furnace as claimed in claim 1, characterized in that, The limiting component (5) includes an installation plate (8) inside. A limiting rod (9) and an adjusting rod (10) are respectively installed on the surface of the installation plate (8). An adjusting cavity (7) is opened at one end of the device body (1). The adjusting rod (10) is slidably inserted into the adjusting cavity (7). The adjusting rod (10) is fixedly connected to the adjusting cavity (7) by a spring (11).

3. The adjustable oxygen lance installation and positioning device for an oxygen-enriched smelting furnace according to claim 1, characterized in that, Multiple fixing plates (4) are installed, and the multiple fixing plates (4) are installed at equal intervals on the surface of the device body (1).

4. The adjustable oxygen lance mounting positioning device of an oxygen-enriched smelting furnace as claimed in claim 2, wherein, The outer diameter of the adjusting rod (10) is equal to the inner diameter of the adjusting cavity (7).

5. The adjustable oxygen lance mounting positioning device of an oxygen-enriched smelting furnace as claimed in claim 2, wherein, The limiting component (5) is installed in two sets, and the two sets of limiting components (5) are symmetrically installed at both ends of the device body (1).

6. The adjustable oxygen lance mounting positioning device of an oxygen-enriched smelting furnace as claimed in claim 1, wherein, A fixing block (3) is installed at one end of the device body (1), and the fixing block (3) has a mounting hole (12) on its surface.

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