Argon filling tool for stainless steel clean pipeline

Abstract

The utility model belongs to an argon filling tool, and particularly relates to an argon filling tool for a stainless steel clean pipeline, which comprises a pair of plugs, namely a left plug and a right plug; the plug comprises plugging cotton, a sleeve and a spring, the plugging cotton is in sliding connection with the sleeve, and the sleeve is provided with a corresponding arc surface; a connecting column is fixedly connected to the plugging cotton, one end of the connecting column can penetrate through the sleeve to extend out, and a convex edge is arranged at one end of the connecting column; the plugging cotton can be extruded and compressed into the sleeve through the movement of the connecting column; the spring is arranged between the plugging cotton and the sleeve; when the plug needs to be placed into the pipeline, the plugging cotton can be extruded and compressed into the sleeve through movement of the connecting column, the outer diameter of the plugging cotton is smaller than the inner diameter of the pipeline, and therefore the plug can be easily placed into the pipeline. Meanwhile, the sleeve is provided with a corresponding arc surface, so that the outer surface of the plugging cotton can be effectively prevented from being scratched, and the possibility of damage of the plugging cotton is reduced.

Description

Technical Field

[0001] The utility model belongs to an argon filling tool, in particular to an argon filling tool for a stainless steel clean pipeline. Background Art

[0002] Argon protection in pipeline welding is an important welding technology, which is mainly used to prevent defects such as oxidation, pores and cracks in the weld in an oxidizing environment, thereby improving the welding quality and strength. Argon protection can be divided into two methods: overall argon filling and local argon filling.

[0003] Integral argon filling: This method is suitable for small diameter pipes or short pipe fittings.

[0004] Local argon filling: This method is more sophisticated. By locally filling the pipe in the welding area, the back of the weld can be better protected to prevent oxidation. For example, when filling argon in a stainless steel argon arc welding pipe, local argon filling can be achieved by inserting a thin copper tube or stainless steel tube and plugging the gap of the weld with asbestos strips.

[0005] The utility model patent with patent application number 202223265110.X discloses a simple isolation tool for ensuring the filling of inert gas inside pipeline welding; it realizes safe and rapid argon filling for pipeline argon arc welding by filling argon into the local space of the pipeline between the two isolation plugs. The filling operation is fast, the operation is simple, and the welding quality is high. When in use, the two isolation plugs need to be placed in the pipelines on both sides of the weld to isolate the welding area from the entire pipeline. In order to ensure the isolation effect, the diameter of the isolation cotton is larger than the diameter of the pipeline, so it needs to be squeezed into the pipeline first. Therefore, there are certain inconveniences during use; at the same time, due to the presence of a groove in the pipeline, the isolation cotton will be scratched and damaged during the extrusion and insertion process. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a stainless steel clean pipeline argon filling tool, which can facilitate the insertion of a plug into the pipeline.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A stainless steel clean pipeline argon filling tool, comprising:

[0009] The plug is provided with a pair of plugs, namely a left plug and a right plug; the plug comprises a plugging cotton, a sleeve and a spring, the plugging cotton is slidably connected with the sleeve, and a corresponding arc surface is provided on the sleeve; a connecting column is fixedly connected to the plugging cotton, one end of the connecting column can extend through the sleeve, and a convex edge is provided on one end of the connecting column; the plugging cotton can be squeezed into the sleeve by moving the connecting column; the spring is arranged between the plugging cotton and the sleeve;

[0010] A connecting pull rope, one end of which is fixedly connected to the connecting column of the left plug, and the other end of which passes through the connecting column of the right plug and extends out;

[0011] The air delivery pipe is connected with the connecting column of the right plug, and the connecting column of the right plug is provided with a corresponding airway.

[0012] The sealing cotton is in a trumpet shape.

[0013] The spring is a tower spring.

[0014] A support rod is hinged on the sleeve of the right plug, and the support rod can be abutted against the convex edge on the connecting column in the right plug; a second pull rope is connected to the middle part of the support rod.

[0015] The end of the second pull rope is fixedly connected to a second handle.

[0016] The connecting pull rope is provided with two first handles; the two first handles are respectively located at two ends of the connecting pull rope.

[0017] The sealing cotton is flame-retardant sponge.

[0018] The connecting column is a bolt, on which a nut and a gasket are connected; the sealing cotton is compressed by tightening the nut.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] When the plug needs to be placed in the pipeline, the plugging cotton is first squeezed into the sleeve by moving the connecting column, so that the outer diameter of the plugging cotton is smaller than the inner diameter of the pipeline, so it can be easily placed in the pipeline. At the same time, the sleeve is provided with a corresponding arc surface, which can effectively prevent the outer surface of the plugging cotton from being scratched and reduce the possibility of damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the use state of Embodiment 1 of the utility model;

[0023] Figure 3 yes Figure 2 Schematic diagram of the half-section structure;

[0024] Figure 4 This is a schematic structural diagram of a plug in Embodiment 1 of the present utility model;

[0025] Figure 5 It is a structural schematic diagram of Embodiment 2 of the present utility model;

[0026] Figure 6This is a cross-sectional view of the use state of Example 2 of the utility model;

[0027] Figure 7 yes Figure 6 A front view of

[0028] Among them: 1 is a plug, 2 is a left plug, 3 is a right plug, 4 is a sealing cotton, 5 is a sleeve, 6 is a spring, 7 is a connecting column, 8 is a flange, 9 is a connecting pull rope, 10 is an air pipe, 11 is a support rod, 12 is a second pull rope, 13 is a second handle, 14 is a first handle, 15 is a nut, 16 is a gasket, 17 is an airway, and 18 is a pipeline. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0030] like Figure 1-4 As shown, a stainless steel clean pipeline argon filling tool includes a plug 1, a connecting rope 9 and a gas pipe 10.

[0031] Among them, a pair of plugs 1 are provided, namely a left plug 2 and a right plug 3; the left plug 2 and the right plug 3 have the same structure, both including the following structures: sealing cotton 4, a sleeve 5 and a spring 6, the sealing cotton 4 is slidably connected with the sleeve 5, and a corresponding arc surface is provided on the sleeve 5, which can reduce scratches on the outer surface of the sealing cotton 4.

[0032] A connecting column 7 is fixedly connected to the plugging cotton 4, and one end of the connecting column 7 can extend through the sleeve 5, and a corresponding through hole is provided on the sleeve 5; a convex edge 8 is provided on one end of the connecting column 7, and the diameter of the convex edge 8 is larger than the diameter of the through hole of the sleeve 5. The spring 6 is arranged between the plugging cotton 4 and the sleeve 5, and the two ends of the spring 6 are respectively against the plugging cotton 4 and the sleeve 5. Specifically: a gasket 16 in contact with the spring 6 is fixed on the plugging cotton 4.

[0033] First, the plugging cotton 4 is squeezed and compressed into the sleeve 5 by moving the connecting column 7, and the spring 6 is compressed; the outer diameter of the plugging cotton 4 is reduced, and it can be easily placed in the pipeline.

[0034] One end of the connecting pull rope 9 is fixedly connected to the connecting column 7 of the left plug 2. The other end of the connecting pull rope 9 extends through the connecting column 7 of the right plug 3. The connecting pull rope 9 and the connecting column 7 of the right plug 3 can be connected by sliding connection or fixed connection. When the sliding connection is adopted, a corresponding hole is provided on the connecting column 7, and a sealing ring can be provided in the hole to improve the sealing performance.

[0035] The gas delivery pipe 10 is in communication with the connection column 7 of the right plug 3 , and a corresponding gas passage 17 is provided on the connection column 7 of the right plug 3 . The protective gas (argon gas) can be discharged from the gas passage 17 through the gas delivery pipe 10 .

[0036] The specific usage is as follows:

[0037] The installation of the left plug 2 is to manually pull the connecting column 7 to move the plugging cotton 4 so that it can be squeezed into the sleeve 5, and the spring 6 is compressed; the outer diameter of the plugging cotton 4 is reduced and it is easily placed in the left pipe. Finally, the external force is removed, and the spring 6 releases the elastic potential energy to push the plugging cotton 4 out of the sleeve 5, so that it contacts the inner wall of the left pipe for plugging.

[0038] To install the right plug 3, first extend the gas pipe 10 and the connecting rope 9 into the right pipeline; then pull the connecting column 7 by hand to move the plugging cotton 4 to be squeezed into the sleeve 5, and the spring 6 is compressed; the outer diameter of the plugging cotton 4 is reduced to easily place it in the left pipeline. Finally, the external force is removed, and the spring 6 releases the elastic potential energy to push the plugging cotton 4 out of the sleeve 5, so that it contacts the inner wall of the right pipeline for plugging.

[0039] The left pipeline and the right pipeline are connected, and argon gas is filled into the welding area and the local space of the pipeline between the left plug 2 and the right plug 3 through the gas pipe 10.

[0040] When welding is completed, the left plug 2 and the right plug 3 are pulled out by pulling the connecting rope 9.

[0041] Furthermore, the shape of the plugging cotton 4 is preferably a bell-mouth shape.

[0042] Furthermore, the spring 6 is preferably a tower spring.

[0043] In Example 1, when installing the right plug 3, the plugging cotton 4 needs to be squeezed into the sleeve 5 by manually pulling the connecting column 7 to move so that it can be placed in the pipeline. Therefore, the plugging cotton 4 in the right plug 3 and the plugging cotton 4 in the left plug 2 are in different directions. After welding, when the connecting rope 9 is pulled to pull out the left plug 2 and the right plug 3, the plugging cotton 4 of the right plug 3 and the sleeve 5 are retracted in the opposite direction.

[0044] For this reason, Figure 5-7 As shown, in this embodiment, a support rod 11 is hinged on the sleeve 5 of the right plug 3, and the support rod 11 can be abutted against the convex edge 8 on the connecting column 7 in the right plug 3; a second pull rope 12 is connected to the middle part of the support rod 11.

[0045] When installing the right plug 3, the connecting column 7 is pulled by hand to move the sealing cotton 4 so that it can be squeezed into the sleeve 5 and the spring 6 is compressed; then the support rod 11 is rotated to make the support rod 11 contact with the lower surface of the protrusion 8; therefore, even after the external force is removed, the movement of the connecting column 7 can be limited by the support rod 11.

[0046] Therefore, the right plug 3 and the left plug 2 can be inserted in the same direction; after the right plug 3 is inserted, the right plug 3 is grasped, and then the second pull rope 12 is pulled, and the second pull rope 12 drives the support rod 11 to rotate in the opposite direction, so that the support rod 11 does not contact the lower surface of the convex edge 8. The spring 6 releases the elastic potential energy to push the plugging cotton 4 out of the sleeve 5, so that it contacts the inner wall of the right pipe for plugging.

[0047] Therefore, after welding is completed, when the connecting rope 9 is pulled to pull out the left plug 2 and the right plug 3, the plugging cotton 4 of the right plug 3 is in the same retracting direction as it is. Therefore, it can be avoided that the plugging cotton 4 of the right plug 3 moves in the opposite direction and is deformed and damaged during the pulling process.

[0048] Furthermore, in order to facilitate pulling, a second handle 13 is fixedly connected to the end of the second pull rope 12 .

[0049] Furthermore, two first handles 14 are provided on the connecting pull rope 9 ; the two first handles 14 are respectively located at two ends of the connecting pull rope 9 .

[0050] Furthermore, the sealing cotton 4 is made of flame-retardant sponge.

[0051] Further, in the above-mentioned embodiments 1 and 2, the connecting column 7 is preferably a bolt, and after the bolt passes through the plugging cotton 4, the nut 15 is tightened to press the plugging cotton 4; corresponding gaskets 16 are provided on both sides of the plugging cotton 4, and the gaskets 16 are sleeved outside the bolt. At the same time, a flange 8 is provided on one end of the connecting column 7, and the diameter of the flange 8 is larger than the through hole diameter of the sleeve 5. The flange 8 can be formed by connecting the nut 15 at the end of the bolt.

[0052] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. A stainless steel clean pipe argon filling tool, characterized in that: include: A plug (1), wherein the plug (1) is provided with a pair, namely a left plug (2) and a right plug (3); the plug (1) comprises a plugging cotton (4), a sleeve (5) and a spring (6); the plugging cotton (4) is slidably connected to the sleeve (5), and the sleeve (5) is provided with a corresponding arc surface; a connecting column (7) is fixedly connected to the plugging cotton (4), one end of the connecting column (7) can pass through the sleeve (5) and extend out, and a convex edge (8) is provided on one end of the connecting column (7); the plugging cotton (4) can be squeezed into the sleeve (5) by moving the connecting column (7); the spring (6) is arranged between the plugging cotton (4) and the sleeve (5); A connecting pull rope (9), one end of which is fixedly connected to the connecting column (7) of the left plug (2), and the other end of which passes through the connecting column (7) of the right plug (3) and extends out; An air delivery pipe (10), wherein the air delivery pipe (10) is in communication with a connecting column (7) of the right plug (3), and a corresponding air passage (17) is provided on the connecting column (7) of the right plug (3).

2. The stainless steel clean pipe argon filling tool according to claim 1, characterized in that: The plugging cotton (4) is in a trumpet shape.

3. The stainless steel clean pipe argon filling tool according to claim 1, characterized in that: The spring (6) is a tower spring.

4. The stainless steel clean pipe argon filling tool according to claim 1, characterized in that: A support rod (11) is hingedly connected to the sleeve (5) of the right plug (3), and the support rod (11) can abut against a convex edge (8) on a connecting column (7) in the right plug (3); a second pull rope (12) is connected to the middle of the support rod (11).

5. The stainless steel clean pipe argon filling tool according to claim 4, characterized in that: The end of the second pull rope (12) is fixedly connected to a second handle (13).

6. The stainless steel clean pipe argon filling tool according to claim 1, characterized in that: The connecting pull rope (9) is provided with two first handles (14); the two first handles (14) are respectively located at two ends of the connecting pull rope (9).

7. The stainless steel clean pipe argon filling tool according to claim 1, characterized in that: The plugging cotton (4) is made of flame-retardant sponge.

8. The stainless steel clean pipe argon filling tool according to claim 1, characterized in that: The connecting column (7) is a bolt, to which a nut (15) and a gasket (16) are connected; the sealing cotton (4) is compressed by tightening the nut (15).

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