A welding fixing device for oxygen lance nozzle

Abstract

The utility model provides a kind of oxygen lance nozzle welding fixing device, including support platform, sliding block and pull rod, several the sliding block array is set on the support platform, it can slide along the radial direction of the support platform, sliding block includes sliding block body, and the universal ball of movably connected in the sliding block body inside, through the universal ball with the universal ball detachable connection setting, pull rod includes the pull rod body for passing through the Laval hole of the oxygen lance nozzle, the locking nut of screw connection in one end of the pull rod body, the top block of rotationally connected in the pull rod body far from one end of the locking nut, and the lock strip of through the length direction setting and the sliding connection of the pull rod body of the pull rod body, the locking nut outer diameter is greater than the diameter of the universal ball.The oxygen lance nozzle welding fixing device in the utility model, by setting the top block that can be folded, the disassembly of oxygen lance nozzle and fixing device after welding is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of oxygen lance nozzle technology, and in particular to an oxygen lance nozzle welding and fixing device. Background Technology

[0002] In the steelmaking process, oxygen needs to be introduced into the furnace, which is done through oxygen lance nozzles. The oxygen lance nozzle is the "heart" of the steelmaking oxygen lance, and its design and manufacturing quality directly affect the blowing effect, oxygen utilization rate, furnace lining life and safety.

[0003] In the existing technology, the fixing device uses a universal joint to pass through the Laval hole and is locked in place by a lock nut. Then the oxygen lance nozzle is welded to the lance body. However, since the lance body is generally a long steel pipe, after the lance body and the oxygen lance nozzle are welded, the lock nut threaded to one end of the universal joint is sealed by the lance body and is inconvenient to disassemble. Therefore, further improvements are needed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an oxygen lance nozzle welding and fixing device, which aims to solve the technical problem that the fixing device is inconvenient to disassemble after the welding of the lance body and the oxygen lance nozzle is completed.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] An oxygen lance nozzle welding and fixing device includes:

[0007] Support platform;

[0008] A slider, an array of the sliders is arranged on the support platform and can slide along the radial direction of the support platform. The slider includes a slider body and a universal ball movably connected inside the slider body.

[0009] A pull rod is detachably connected to the universal ball joint. The pull rod passes through the universal ball joint. The pull rod includes a pull rod body for passing through the Laval hole of the oxygen lance nozzle, a locking nut threaded to one end of the pull rod body, a top block rotatably connected to the end of the pull rod body away from the locking nut, and a locking bar that passes through the length of the pull rod body and is slidably connected to the pull rod body. The outer diameter of the locking nut is larger than the diameter of the universal ball joint.

[0010] The top block includes an integrally formed limiting part and a fixing part. The limiting part is located at the end of the top block near the pull rod body, and the fixing part is located at the end of the top block away from the limiting part. The locking bar includes an integrally formed rod part and a tooth part. The tooth part is located at the end of the locking bar near the top block, and the rod part is located at the end of the locking bar away from the tooth part. The limiting part near the locking bar is provided with a toothed ring that meshes with the tooth part.

[0011] The top block abuts against the side of the pull rod body, and pulling the locking bar drives the top block to rotate so that it is perpendicular to the pull rod body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a pull rod through the universal ball joint, after the pull rod body passes through the slider and the Laval hole in sequence, the top block is rotated by pulling the locking bar, and the vertical pull rod body forms a limit lock. Then, the locking nut is installed, and the oxygen lance nozzle is fixed to the support platform by the locking nut. After the oxygen lance nozzle is welded to the lance body, simply loosen the locking nut, push the locking bar, drive the top block to fit against the pull rod body, contact the limit of the oxygen lance nozzle, and the pull rod can be pulled out to complete the disassembly.

[0013] According to one aspect of the above technical solution, an adjusting rod is movably connected to one side of the slider body, and the adjusting rod is threadedly connected to the support platform.

[0014] According to one aspect of the above technical solution, an adjusting rod is connected to one side of the slider body, the adjusting rod is movably connected to the support platform, and an adjusting nut is screwed to the end of the adjusting rod away from the support platform.

[0015] According to one aspect of the above technical solution, the adjusting rod is fitted with a spring between the slider body and the support platform.

[0016] According to one aspect of the above technical solution, the end of the rod away from the toothed portion is provided with a threaded portion, and the threaded portion is screwed with a limiting nut.

[0017] According to one aspect of the above technical solution, the pull rod body is provided with a receiving groove for accommodating the top block.

[0018] According to one aspect of the above technical solution, the pull rod body is provided with two top blocks, and the two top blocks are symmetrically arranged on both sides of the lock bar.

[0019] According to one aspect of the above technical solution, the bottom of the support platform is provided with a lifting mechanism for adjusting the height of the support platform. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the support platform structure of the oxygen lance nozzle welding and fixing device in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the tie rod of the oxygen lance nozzle welding and fixing device in one embodiment of the present invention;

[0022] Figure 3 This is a partial sectional view of the tie rod of the oxygen lance nozzle welding and fixing device in one embodiment of the present invention;

[0023] Explanation of main component symbols: 1-Support platform, 11-Adjusting rod, 12-Adjusting nut, 13-Spring, 2-Slider, 21-Slider body, 22-Universal ball, 23-Through hole, 3-Pull rod, 31-Pull rod body, 311-Receiving groove, 32-Top block, 321-Limiting part, 322-Fixing part, 323-Gear ring, 33-Locking bar, 331-Rod part, 332-Gear part, 333-Limiting nut, 334-Threaded part, 34-Locking nut, 4-Lifting mechanism;

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] See Figures 1 to 2This utility model provides an oxygen lance nozzle welding and fixing device, which uses the Laval orifice of the oxygen lance nozzle to fix the oxygen lance nozzle for welding to the lance body. It includes a circular support platform 1, on which a plurality of sliders 2 are arranged in a circumferential array. Each slider 2 includes a slider body 21 and a universal ball 22. The slider body 21 can slide radially along the support platform 1. In this embodiment, an adjusting rod 11 is provided on one side of the slider body 21. One end of the adjusting rod 11 is rotatably connected to the surface of the slider body 21, and the adjusting rod 11 is threadedly connected to the support platform 1. Adjustment is achieved by rotation. Rod 11 can push slider 2 to slide along support platform 1, and the position of slider 2 can be fixed by adjusting the threaded connection of rod 11. A universal ball 22 is provided inside the sliding body 21, which can rotate freely inside the slider body 21. A through hole 23 is provided on the universal ball 22, and a pull rod 3 is provided through the through hole 23. The pull rod 3 includes a pull rod body 31, one end of which is provided with a top block 32, which is rotatably connected to the pull rod body 31. A locking bar 33 is provided through the middle of the pull rod body 31 along the length direction of the pull rod 3, and the locking bar 33 can slide along the length direction to limit movement. The locking bar 33 is used for driving... The top block 32 rotates. Specifically, the top block 32 includes a limiting part 321 and a fixing part 322 at one end of the limiting part 321. The locking bar 33 includes a rod part 331 and a toothed part 332 near one end of the top block 32. The limiting part 321 has a toothed ring 323 at the end away from the fixing part 322. The toothed part 332 engages with the top block 32 through the toothed ring 323. When the toothed part 332 of the locking bar 33 slides to the end near the inside of the pull rod body 31, the toothed part 332 drives the toothed ring 323 to rotate, thereby driving the top block 32 to rotate until the top block 32 is perpendicular to the pull rod body 31. At this time, the top block 32 rotates. The limiting part 321 of 2 abuts against the pull rod body 31, preventing the top block 32 from rotating further. The pull rod body 31 and the top block 32 form an L-shaped structure, hooking onto the inner wall of the oxygen gun nozzle. A locking nut 34 is threadedly connected to the end of the pull rod body 31 away from the top block 32. The outer diameter of the locking nut 34 is larger than the diameter of the universal ball 22. The locking nut 34 restricts the pull rod 3 from sliding out of the universal ball 22 and simultaneously pulls the oxygen gun nozzle towards the support platform 1 to fix it. During disassembly, simply remove the locking nut 34, push the pull rod 3, push the locking bar 33 inward, so that the top block 32 rotates and fits against the pull rod body 31. Then pull out the pull rod 3 to complete the disassembly.

[0029] It should be noted that, in this embodiment, by setting a universal ball 22 in the slider 2, the angle of one end of the pull rod 3 can be adjusted when installing the pull rod 3, so that the pull rod body 31 can be inserted into the Laval holes of different angles for fixing; by controlling the sliding positioning of the slider 2 by adjusting the rod 11, the fixing device can adapt to the fixing of oxygen gun nozzles of different sizes.

[0030] See Figure 1 In some embodiments, an adjusting rod 11 is provided on one side of the slider body 21. One end of the adjusting rod 11 can be movably connected to the slider body 21 or fixedly connected. The other end of the adjusting rod 11 passes through the support platform 1 and is slidably connected to the support platform 1. An adjusting nut 12 is threadedly connected to the end of the adjusting rod 11 away from the slider 2. The position of the slider 2 is fixed by the limiting of the support platform 1 and the adjusting nut 12. Furthermore, in this embodiment, a spring 13 is sleeved on the adjusting rod 11. By setting the spring 13, the adjusting nut 12 is always kept against the support platform 1 and does not loosen.

[0031] See Figure 2 In some embodiments, the end of the rod portion 331 of the locking bar 33 away from the tooth portion 332 is provided with a threaded portion 334, wherein the thread length of the threaded portion 334 is the sliding stroke length of the locking bar 33 driving the top block 32 from the point of contact with the pull rod body 31 to the point of perpendicularity with the pull rod body 31. A limit nut 333 is provided in the threaded portion 334. By limiting the position of the top block 32 when it is perpendicular to the pull rod body 31, the position can be locked.

[0032] A receiving groove 311 for accommodating the top block 32 is provided on the pull rod body 31. When the top block 32 is in contact with the pull rod body 31, the top block 32 is completely located within the receiving groove 311. More specifically, when the top block 32 is in contact with the pull rod body 31, the outer side surface of the top block 32 is flush with the side surface of the top block 32 body. Figure 2 As can be seen, in this embodiment, the pull rod body 31 has a cylindrical structure, so the outer surface of the top block 32 is arc-shaped, and the structure is more aesthetically pleasing when integrated with the pull rod body 31. More importantly, this design makes the pull rod 3 smoother when entering and exiting the Laval hole of the oxygen gun nozzle, without colliding with or scratching the hole wall.

[0033] See Figure 3In this embodiment, two top blocks 32 are provided, respectively located on both sides of the top of the pull rod body 31, and symmetrically arranged about the locking bar 33. It can be understood that the locking bar 33 simultaneously controls the two top blocks 32 to rotate towards each other, and the pull rod 3 after unfolding is more stably fixed to the oxygen gun nozzle. It can be understood that three or four top blocks 32 can also be provided; however, two are provided in this embodiment, which is sufficient to satisfy the fixing of the pull rod 3 to the oxygen gun nozzle, and the structure is simple.

[0034] The bottom of the support platform 1 is equipped with a lifting mechanism 4. The lifting mechanism 4 supports the entire support platform 1 and is used to adjust the height of the support platform 1. After the oxygen lance nozzle is fixed by the fixing device, it needs to be aligned with the lance body before welding can be carried out. The height can be adjusted by adjusting the lifting mechanism 4 to complete the docking operation.

[0035] Additionally, as shown in Figure 1, since the slider 2 and the pull rod 3 in this embodiment are detachably connected, a number of sliders 2 are arranged in a circumferential array, which can be used to fix oxygen gun nozzles with various hole positions. During the fixing process, the excess sliders 2 do not obstruct the fixing of the oxygen gun nozzle. In this embodiment, there are five sliders 2. It can be understood that this embodiment is only applicable to the fixing of five-hole oxygen gun nozzles.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A welding and fixing device for an oxygen lance nozzle, characterized in that, include: Support platform; A slider, an array of the sliders is arranged on the support platform and can slide along the radial direction of the support platform. The slider includes a slider body and a universal ball movably connected inside the slider body. A pull rod is detachably connected to the universal ball joint. The pull rod passes through the universal ball joint. The pull rod includes a pull rod body for passing through the Laval hole of the oxygen lance nozzle, a locking nut threaded to one end of the pull rod body, a top block rotatably connected to the end of the pull rod body away from the locking nut, and a locking bar that passes through the length of the pull rod body and is slidably connected to the pull rod body. The outer diameter of the locking nut is larger than the diameter of the universal ball joint. The top block includes an integrally formed limiting part and a fixing part. The limiting part is located at the end of the top block near the pull rod body, and the fixing part is located at the end of the top block away from the limiting part. The locking bar includes an integrally formed rod part and a tooth part. The tooth part is located at the end of the locking bar near the top block, and the rod part is located at the end of the locking bar away from the tooth part. The limiting part near the locking bar is provided with a toothed ring that meshes with the tooth part. The top block abuts against the side of the pull rod body, and pulling the locking bar drives the top block to rotate so that it is perpendicular to the pull rod body.

2. The oxygen lance nozzle welding and fixing device according to claim 1, characterized in that, An adjusting rod is movably connected to one side of the slider body, and the adjusting rod is threadedly connected to the support platform.

3. The oxygen lance nozzle welding and fixing device according to claim 1, characterized in that, An adjusting rod is connected to one side of the slider body. The adjusting rod is movably connected to the support platform, and an adjusting nut is screwed to the end of the adjusting rod away from the support platform.

4. The oxygen lance nozzle welding and fixing device according to claim 3, characterized in that, The adjusting rod is located between the slider body and the support platform and is fitted with a spring.

5. The oxygen lance nozzle welding and fixing device according to claim 1, characterized in that, The rod portion has a threaded portion at the end away from the toothed portion, and a limiting nut is screwed onto the threaded portion.

6. The oxygen lance nozzle welding and fixing device according to claim 1, characterized in that, The pull rod body is provided with a receiving groove for accommodating the top block.

7. The oxygen lance nozzle welding and fixing device according to claim 1, characterized in that, The pull rod body is provided with two top blocks, which are symmetrically arranged on both sides of the lock bar.

8. The oxygen lance nozzle welding and fixing device according to claim 1, characterized in that, The bottom of the support platform is equipped with a lifting mechanism for adjusting the height of the support platform.

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