A self-adjusting argon blowing joint

Abstract

The present invention provides a self-adjusting argon blowing joint, which can solve the problems of weak sealing and argon leakage caused by the inclination of the end face of the upper joint. A self-adjusting argon blowing joint, including an upper joint and a lower joint, the lower structure includes a joint body and a spring, the joint body includes a press-fitting part and a tubular part arranged in the middle of the bottom of the press-fitting part, the tubular part forms a lower argon gas channel that penetrates the press-fitting part, the top of the press-fitting part is equipped with a sealing ring arranged around the lower argon gas channel, the spring sleeve is arranged outside the tubular part, the upper end of the spring abuts against the press-fitting part, and is characterized in that: the lower joint also includes a spring seat and a self-aligning block, the seat body of the spring seat abuts against the lower end of the spring, the seat body is provided with a lower guide sleeve extending upward, the press-fitting part is provided with an upper guide sleeve extending upward, the lower guide sleeve is sleeved with the upper guide sleeve and limited by a vertical limiting structure, and the lower part of the seat body cooperates with the self-aligning block through an arc surface.

Description

Technical Field

[0001] The invention relates to the field of auxiliary equipment in steelmaking production process, and in particular to a self-adjusting argon blowing joint. Background Art

[0002] During the process of transferring molten steel under the furnace, the molten steel needs to be stirred by blowing argon gas into the molten steel. Generally, argon blowing devices are installed on the transfer equipment under the furnace, such as molten steel tank trucks and ladle turntables. When the molten steel tank is dropped, the argon gas pipeline of the molten steel tank needs to be connected with the argon gas blowing device on the transfer equipment, and an automatic argon blowing joint is generally used for connection. The existing automatic argon blowing joint includes an upper joint and a lower joint. The upper joint is installed on the tank seat on the side of the molten steel tank, and the lower joint is installed on the bearing tank seat of the transfer equipment. Due to the inclination of the end face of the upper joint caused by the installation, processing or tank angle of the upper joint, after docking with the lower joint, there are local weak parts in the seal, resulting in argon leakage. Summary of the invention

[0003] The invention provides a self-adjusting argon blowing joint, which can solve the problems of weak sealing and argon leakage caused by the inclination of the upper joint end surface.

[0004] The technical solution is as follows: a self-adjusting argon blowing joint, comprising an upper joint and a lower joint, the lower structure comprising a joint body and a spring, the joint body comprising a press-fitting part and a tubular part arranged in the middle of the bottom of the press-fitting part, the tubular part forming a lower argon gas channel running through the press-fitting part, a sealing ring arranged around the lower argon gas channel installed on the top of the press-fitting part, the spring sleeve being arranged outside the tubular part, the upper end of the spring abutting against the press-fitting part, characterized in that: the lower joint also includes a spring seat and a self-aligning block, the seat body of the spring seat abuts against the lower end of the spring, the seat body is provided with a lower guide sleeve extending upward, the press-fitting part is provided with an upper guide sleeve extending upward, the lower guide sleeve is sleeved with the upper guide sleeve and limited by a vertical limiting structure, the lower part of the seat body cooperates with the self-aligning block through an arc surface.

[0005] Furthermore, the upper guide sleeve is sleeved outside the lower guide sleeve and is coaxially arranged with the tubular portion.

[0006] Furthermore, the vertical limiting structure includes a limiting rod and a waist-shaped hole, the limiting rod is installed on the upper guide sleeve and extends into the waist-shaped hole, and the waist-shaped hole is vertically opened on the lower guide sleeve.

[0007] Preferably, the vertical limiting structures are provided with more than three and are evenly arranged around the upper guide sleeve and the lower guide sleeve.

[0008] Furthermore, an inner guide sleeve extending upward is provided in the middle portion of the seat body, and the inner guide sleeve is sleeved outside the tubular portion.

[0009] Furthermore, two of the sealing rings and two of the springs are provided respectively and are distributed from the inside to the outside.

[0010] Furthermore, a centering fitting portion is provided at the lower portion of the seat body, and the centering fitting portion is matched with the centering block through an arc surface.

[0011] Furthermore, a pressing plate is installed on the upper part of the pressing part, the spring is installed on the pressing plate, and the middle part of the pressing plate is connected to the lower argon gas channel through a gas joint.

[0012] Furthermore, the springs are arranged uniformly around the outside of the tubular portion instead of being sleeved outside the tubular portion, and six springs are provided.

[0013] The self-adjusting argon blowing joint of the present invention has a press-fit portion of a lower joint that can adjust the angle through the arc surface alignment between the spring seat and the alignment block, and fit with the upper joint at the same inclination angle, thereby eliminating weak sealing and overcoming the problem of argon leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the self-adjusting argon blowing joint of the present invention.

[0015] Figure 2 for Figure 1 An enlarged schematic diagram of the connector body in .

[0016] Figure 3 for Figure 1 An enlarged schematic diagram of the spring seat in FIG.

[0017] Figure 4 for Figure 1 An enlarged schematic diagram of the cooperation between the self-aligning fitting part and the self-aligning block. DETAILED DESCRIPTION

[0018] like Figure 1~Figure 4As shown, a self-adjusting argon blowing joint comprises an upper joint and a lower joint, the upper joint is provided with an upper argon gas channel running through from top to bottom (not shown in the figure, and reference may be made to the invention patent of the applicant with announcement number CN212156253U), the lower structure comprises a joint body 1, a spring 2, a spring seat 3 and a self-aligning block 5, the joint body 1 comprises a press-fitting portion 1a and a tubular portion 1b arranged in the middle of the bottom of the press-fitting portion 1a, the tubular portion 1b is formed with a lower argon gas channel 1e running through the press-fitting portion 1a, after the upper joint and the lower joint are butted, the compressed gas pipeline installed in the tank seat, the upper argon gas channel, the lower argon gas channel 1e and the argon gas pipeline 10 installed in the bearing tank seat are connected, a pressing plate 7 is installed on the top of the press-fitting portion 1a, a sealing ring 8 arranged around the lower argon gas channel 1e is installed on the pressing plate 7, the spring 2 It is sleeved outside the tubular part 1b, and the two ends of the spring 2 respectively abut against the press-fitting part 1a and the seat body 3a of the spring seat. The bottom of the press-fitting part is provided with a spring upper positioning groove 1f, and the seat body is provided with a spring lower positioning groove 3e. The seat body 3a of the spring seat 3 abuts against the lower end of the spring 2, and the seat body 3a is provided with a lower guide sleeve 3b extending upward. The press-fitting part 1a is provided with an upper guide sleeve 1c extending upward. The lower guide sleeve 3b is sleeved outside the upper guide sleeve 1c and is limited by a vertical limiting structure. The upper guide sleeve 1c, the lower guide sleeve 3b and the tubular part 1b are coaxially arranged. The lower part of the seat body 3a is installed with a centering fitting part 4, and the centering fitting part 4 is matched with the centering block 5 through an arc surface. Specifically, the centering fitting part is provided with a lower convex arc surface 4a, and the centering block 5 is provided with a lower concave arc surface 5a, and the lower convex arc surface 4a is matched with the lower concave arc surface 5a.

[0019] There are 8 vertical limiting structures and they are evenly arranged around the upper guide sleeve 1c and the lower guide sleeve 3b. The vertical limiting structure includes a limiting rod 6 and a waist-shaped hole 3c. The limiting rod 6 is installed in the threaded hole 1d of the upper guide sleeve 1c and extends into the waist-shaped hole 3c. The waist-shaped hole 3c is vertically opened in the lower guide sleeve 3b. The vertical limiting structure is provided to prevent the joint body from separating from the spring and the spring seat. During assembly, the argon pipeline 10 in the bearing tank seat is connected to the tubular portion 1b. A section of high-temperature resistant hose or bellows can be provided at the connection between the argon pipeline 10 and the tubular portion 1b. The hose or corrugated structure is used to adapt to the angle adjustment of the press-fitting portion and the upper joint, thereby reducing the interference of the rigidity of the argon pipeline 10 with the rotation adjustment of the joint body 1.

[0020] An inner guide sleeve 3d extending upward is provided in the middle of the seat body 3a, and the inner guide sleeve 3d is sleeved outside the tubular portion 1b.

[0021] There are two sealing rings 8 and two springs 2 respectively and they are distributed from the inside to the outside to improve the sealing effect.

[0022] A pressing plate 7 is installed on the upper part of the press-fitting part 1a, and the spring 2 is installed on the pressing plate 7. The middle part of the pressing plate 7 is connected to the lower argon gas channel 1e through the gas connector 9. At the same time, the gas connector 9 is threadedly connected to the press-fitting part 1a, and the pressing plate 7 is pressed and fixed to the top of the press-fitting part 1a. In this embodiment, the pressing plate 7 and the centering fitting part 4 are both detachably connected, which is convenient for processing and later replacement.

Claims

1. A self-adjusting argon blowing joint, comprising an upper joint and a lower joint, the lower joint comprising a joint body and a spring, the joint body comprising a press-fitting portion and a tubular portion arranged in the middle of the bottom of the press-fitting portion, the tubular portion forming a lower argon gas channel penetrating the press-fitting portion, a pressing plate installed on the upper part of the press-fitting portion, the middle part of the pressing plate is connected to the lower argon gas channel through a gas joint, a sealing ring arranged around the lower argon gas channel is installed on the top of the pressing plate, the spring is sleeved outside the tubular portion, and the upper end of the spring abuts against the press-fitting portion, characterized in that: The lower joint also includes a spring seat and a self-aligning block. The seat body of the spring seat abuts against the lower end of the spring. The seat body is provided with a lower guide sleeve extending upward. The press-fitting portion is provided with an upper guide sleeve extending downward. The lower guide sleeve is sleeved with the upper guide sleeve and is limited by a vertical limiting structure. The lower part of the seat body is provided with a self-aligning fitting portion, and the self-aligning fitting portion is matched with the self-aligning block through an arc surface. The vertical limiting structure includes a limiting rod and a waist-shaped hole. The limiting rod is installed on the upper guide sleeve and extends into the waist-shaped hole. It is vertically opened in the lower guide sleeve; the vertical limiting structures are provided with more than 3 and are evenly arranged around the upper guide sleeve and the lower guide sleeve; the middle part of the seat body is provided with an inner guide sleeve extending upward, and the inner guide sleeve is arranged outside the tubular part; the sealing ring and the spring are respectively provided with two and are distributed from the inside to the outside; the argon pipeline in the bearing tank seat is connected with the tubular part, and a section of high-temperature resistant hose or bellows is arranged at the connection part between the argon pipeline and the tubular part, and the hose or the corrugated structure is used to adapt to the angle adjustment of the press-fitting part and the upper joint.

2. A self-adjusting argon blowing joint according to claim 1, characterized in that: The upper guide sleeve is sleeved outside the lower guide sleeve and is coaxially arranged with the tubular portion.

3. The self-adjusting argon blowing joint according to claim 1, characterized in that: The springs are arranged uniformly around the outside of the tubular portion instead of being sleeved outside the tubular portion, and there are 6 springs.

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