Argon filling protection device for pipeline welding

Abstract

The utility model discloses an argon filling protection device for pipeline welding, which belongs to the technical field of pipeline welding and comprises a first sleeve, a second sleeve and an air inlet pipe, a bottom plate is arranged at the bottom of the first sleeve, the second sleeve is arranged at the bottom of the bottom plate, a first through hole is formed in the first sleeve, and a second through hole is formed in the center of the bottom plate. An air inlet pipe penetrates through the first through hole, a second nut is arranged below the second through hole, and an air outlet pipe is connected into the second nut through threads. The clamping bolt is used in cooperation with the gas outlet pipe, a pipeline needing to be welded can be rapidly clamped and fixed, a relatively-sealed protection area is provided for the interior of the pipeline, meanwhile, conveying of protection gas is not affected, the welding quality is improved, and the welding device is convenient to use, easy to operate and easy to popularize.

Description

Technical Field

[0001] The utility model relates to a pipeline welding protection device, in particular to an argon-filling protection device for pipeline welding, and belongs to the technical field of pipeline welding. Background Art

[0002] In the welding of stainless steel pipes, since the back of the stainless steel argon arc welding base is prone to oxidation and defects, protective measures must also be taken on the back. The outside of the pipe can be protected by the argon gas sprayed from the welding gun, but the inside of the pipe cannot be filled with argon for protection. In addition, different welding positions may need to be set during welding. Once one side of the pipe is clamped with a clamp, it is difficult to seal that side, which not only wastes argon gas but also causes a large amount of air to enter the pipe, affecting the welding quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an argon-filled protection device for pipeline welding, which can quickly clamp and fix the pipeline to be welded, improve the welding quality, and is easy to use and simple to operate.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] A pipeline welding argon filling protection device includes a first sleeve, a second sleeve and an air inlet pipe, a bottom plate is provided at the bottom of the first sleeve, a second sleeve is provided at the bottom of the bottom plate, a first through hole is provided on the first sleeve, a second through hole is provided at the center of the bottom plate, an air inlet pipe passes through the first through hole, a second nut is provided below the second through hole, and an air outlet pipe is connected to the second nut through a thread.

[0006] The air inlet pipe is distributed in an L shape, the upper end of the air inlet pipe is connected to the argon meter hose, and the lower end of the air inlet pipe is connected to the second through hole.

[0007] A third through hole is provided on the outer wall of the second sleeve, and a first nut is provided outside the third through hole. A clamping bolt is threadedly connected to the first nut.

[0008] The second through hole is located at the center of the bottom plate, and the second nut is located on the bottom surface of the bottom plate.

[0009] A welding pipe is inserted into the second sleeve and fixed by a clamping bolt, and the outer end of the welding pipe is sealed by an aluminum foil tape.

[0010] The positive beneficial effects of the utility model are:

[0011] 1. The utility model is provided with a clamping bolt on the second sleeve. By using the clamping bolt in conjunction with the outlet pipe, the pipe to be welded can be quickly clamped and fixed, providing a relatively sealed protection area inside the pipe without affecting the delivery of the protective gas.

[0012] 2. The utility model provides a second nut below the second passage to facilitate the connection and fixation of the outlet pipe. At the same time, outlet pipes of different lengths can be replaced according to the welding conditions and welding positions to ensure that the outlet is close to the root of the weld, thereby enhancing the protection effect and improving the quality of the weld joint.

[0013] 3. The utility model sets a bottom plate at the bottom of the first sleeve. When in use, the welding pipe can be closely fitted with the bottom plate to reduce the phenomenon of air leakage during welding. The other side of the pipe can be sealed with aluminum foil tape. It is easy to use and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the second sleeve and the air outlet pipe of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the air outlet pipe of the utility model;

[0017] Figure 4 It is a top view of the utility model;

[0018] Among them: 1-first sleeve, 2-base plate, 3-first nut, 4-clamping bolt, 5-exhaust pipe, 6-third nut, 6-second sleeve, 7-inlet pipe, 8-second nut, 9-ventilation hole. DETAILED DESCRIPTION

[0019] The present invention will be further explained and illustrated below with reference to the accompanying drawings:

[0020] For example, see Figure 1-Figure 4 A pipeline welding argon filling protection device includes a first sleeve 1, a second sleeve 6 and an air inlet pipe 7. A bottom plate 2 is provided at the bottom of the first sleeve 1, a second sleeve 6 is provided at the bottom of the bottom plate 2, a first through hole is provided on the first sleeve 1, a second through hole is provided in the center of the bottom plate 2, an air inlet pipe 7 passes through the first through hole, a second nut 8 is provided below the second through hole, and an air outlet pipe 5 is connected to the second nut 8 through a thread.

[0021] The air inlet pipe 7 is distributed in an L shape, and the upper end of the air inlet pipe 7 is connected to the argon meter hose, and the lower end of the air inlet pipe is connected to the second through hole.

[0022] A third through hole is provided on the outer wall of the second sleeve 6 , and a first nut 3 is provided outside the third through hole. A clamping bolt 4 is threadedly connected to the first nut 3 .

[0023] The second through hole is located at the center of the bottom plate 2 , and the second nut 8 is located on the bottom surface of the bottom plate 2 .

[0024] A welding pipe is inserted into the second sleeve 6 and fixed by a clamping bolt 4 , and the outer end of the welding pipe is sealed by an aluminum foil tape.

[0025] The bottom plate 2 is made of metal material.

[0026] In the above description, the outer diameter of the first sleeve is smaller than the outer diameter of the second sleeve, and the first sleeve can be used in conjunction with the clamp to fix the welding position.

[0027] In the above description, each nut is connected by welding when fixing the direction and position.

[0028] In the above description, the air outlet pipe is made of metal material. According to different welding conditions, the air outlet pipes of different lengths can be replaced to make the air outlet as close to the root of the weld as possible.

[0029] Working principle:

[0030] Before welding the pipeline, first tighten the outlet pipe and fix it in the second sleeve, then use the first sleeve in conjunction with the clamp to clamp and fix the first sleeve, and connect the air inlet pipe to the argon meter hose; put the assembled pipeline on the outlet pipe so that one side fits tightly with the base plate, and at the same time tighten the clamping bolt. The mechanical pressure applied by the clamping bolt fixes the pipeline in the second sleeve, and seal the pipe opening on the other side of the pipeline with aluminum foil tape. Open the gas valve and you can start welding.

[0031] The utility model reduces gas leakage during welding by tightly fitting the bottom plate and the side of the pipeline. The extended gas outlet pipe distributes argon gas around the weld inside the pipeline, thereby isolating oxygen and improving the quality of the weld joint. The clamping bolt is used in conjunction with the gas outlet pipe to quickly clamp and fix the pipeline to be welded, providing a relatively sealed protection area inside the pipeline without affecting the delivery of the protective gas. The utility model is easy to use, simple to operate, and easy to promote.

Claims

1. A pipeline welding argon filling protection device, comprising a first sleeve (1), a second sleeve (6) and an air inlet pipe (7), characterized in that: A bottom plate (2) is provided at the bottom of the first sleeve (1), a second sleeve (6) is provided at the bottom of the bottom plate (2), a first through hole is provided on the first sleeve (1), a second through hole is provided at the center of the bottom plate (2), an air inlet pipe (7) passes through the first through hole, a second nut (8) is provided below the second through hole, and an air outlet pipe (5) is connected to the second nut (8) through a thread.

2. The argon-filled protection device for pipeline welding according to claim 1, characterized in that: The air inlet pipe (7) is distributed in an L-shape, the upper end of the air inlet pipe (7) is connected to the argon meter hose, and the lower end of the air inlet pipe is connected to the second through hole.

3. The argon-filled protection device for pipeline welding according to claim 1, characterized in that: A third through hole is provided on the outer wall of the second sleeve (6), and a first nut (3) is provided outside the third through hole. A clamping bolt (4) is threadedly connected to the first nut (3).

4. The argon-filled protection device for pipeline welding according to claim 1, characterized in that: The second through hole is located at the center of the bottom plate (2), and the second nut (8) is located on the bottom surface of the bottom plate (2).

5. The argon-filled protection device for pipeline welding according to claim 1, characterized in that: A welding pipe is inserted into the second sleeve (6) and fixed by a clamping bolt (4), and the outer end of the welding pipe is sealed by an aluminum foil tape.

6. The argon-filled protection device for pipeline welding according to claim 1, characterized in that: The bottom plate (2) is made of metal material.

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