Auxiliary inflating device for argon arc welding

Abstract

The utility model belongs to the technical field of welding, and discloses an argon arc welding auxiliary inflation device which comprises a fan, a three-way connector and an oxygen detection piece. The three-way connector is provided with a first inlet, a second inlet and an outlet, a reducer pipe is arranged at the first inlet, the fan is connected with the reducer pipe through the wind scooper, the inner diameter of the reducer pipe is gradually reduced in the wind outlet direction of the fan, and part of the reducer pipe extends into the first inlet and faces the outlet. The second inlet is positioned between the reducer pipe and the outlet and is communicated with a pipeline to be inflated; and the detection end of the oxygen detection piece extends into the second inlet through the outlet. By arranging the draught fan and the reducer pipe, air in the pipeline can be rapidly exhausted through the pressure difference between airflow at different flow speeds, the pipeline can be rapidly filled with argon, the inflation efficiency is effectively improved, and the argon arc welding quality of the follow-up pipeline is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field especially relates to a argon arc welding auxiliary inflation device. BACKGROUND

[0002] In the manufacturing and processing of the pipeline of pharmaceutical equipment, argon arc welding technology is usually adopted, according to pharmaceutical regulations, argon gas protection weld must be used in argon arc welding, to avoid the oxidation and blackening phenomenon of the internal weld of the pipeline, which requires that all air in the whole pipeline is discharged and filled with argon. In the current argon arc welding process of the pipeline, argon is filled in one end of the pipeline to be welded, and the other end is naturally exhausted by the pressure of the gas cylinder. However, this inflation method takes a long time, and when a long pipeline is encountered, the front end pressure loss occurs, and the rear end inflation is insufficient, which leads to the difficulty of completely excluding oxygen-containing air, and the subsequent welding also appears the phenomenon of oxidation and blackening. SUMMARY

[0003] The utility model discloses a kind of argon arc welding auxiliary inflation devices, air in pipeline can be quickly discharged, and quickly filled with argon, guarantee argon arc welding quality.

[0004] To achieve this purpose, the utility model adopts the following technical scheme: argon arc welding auxiliary inflation device, including fan, tee joint and oxygen detection piece;The tee joint has first inlet, second inlet and outlet, the first inlet is equipped with reducing pipe, the fan is connected with the reducing pipe by air baffle, the inner diameter of the reducing pipe gradually decreases along the air outlet direction of the fan, and the reducing pipe part extends into the first inlet and is arranged towards the outlet, the second inlet is located between the reducing pipe and the outlet and is communicated with the pipeline to be inflated;The detection end of the oxygen detection piece extends into the second inlet through the outlet.

[0005] Preferably, a blind plate is arranged between the tee joint and the reducing pipe, the blind plate is welded and fixed with the outer peripheral wall of the reducing pipe and is connected with the first inlet.

[0006] Preferably, a connecting plate matched with the shape of the blind plate is arranged at the first inlet, and the blind plate and the connecting plate are welded and fixed.

[0007] Preferably, a nozzle is arranged at the end of the reducing pipe away from the fan, and the nozzle is arranged along the radial direction of the reducing pipe.

[0008] Preferably, the air baffle is provided with a clamping groove, the fan and the clamping groove are clamped and matched, and the fan and the air baffle are detachably connected.

[0009] Preferably, the inner diameter of the air baffle gradually decreases along the air outlet direction of the fan.

[0010] As preferred, the variable diameter pipe is provided with a first connecting part, the air deflector is provided with a second connecting part, and the first connecting part and the second connecting part are detachably connected.

[0011] As preferred, a detachable sealing assembly is arranged between the second inlet and the pipeline to be inflated, and the second inlet is sealingly connected with the pipeline to be inflated through the sealing assembly.

[0012] As preferred, the sealing assembly comprises a first clamping joint arranged at the tee joint and a second clamping joint arranged at the pipeline to be inflated, and the first clamping joint and the second clamping joint are threadedly connected.

[0013] As preferred, the inner diameter of the outlet gradually increases along the air outlet direction of the fan.

[0014] The beneficial effects of the utility model are as follows: when the user uses the argon arc welding auxiliary inflation device, the second inlet of the tee joint and the pipeline to be inflated are communicated first, and argon is filled in the pipeline to be inflated away from the tee joint, simultaneously, the fan is started synchronously and blows air towards the variable diameter pipe, the speed of airflow increases after passing through the variable diameter pipe with gradually decreasing inner diameter, because the speed of airflow blown by the fan is greater than the flow rate of argon at the second inlet, under the action of pressure, the air in the pipeline is pushed out of the pipeline, and then flows to the outlet of the tee joint together with the high-speed airflow, when the oxygen detection member detects that the oxygen content is zero, it is indicated that the air in the pipeline to be inflated has been removed, and the pipeline to be inflated is filled with argon. By arranging the fan and the variable diameter pipe, the pressure difference between the airflow with different flow rates is utilized, the air in the pipeline can be quickly removed, and the pipeline to be inflated is quickly filled with argon, the inflation efficiency is effectively improved, and the quality of argon arc welding of the subsequent pipeline is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the argon arc welding auxiliary inflation device of the utility model;

[0016] Figure 2 is Figure 1 the sectional view of A-A in figure 1;

[0017] Figure 3 is Figure 2 the enlarged view of B in figure 1.

[0018] In the figure: 100, fan; 110, air deflector; 111, clamping groove; 200, tee joint; 210, main pipe body; 211, first inlet; 212, outlet; 213, connecting plate; 220, branch pipe body; 221, second inlet; 230, variable diameter pipe; 231, blind plate; 232, nozzle; 233, first connecting part; 240, sealing assembly; 241, first clamping joint; 300, pipeline to be inflated; 310, second clamping joint. DETAILED DESCRIPTION

[0019] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0020] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0022] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0023] Referring to Figure 1 and Figure 2As shown, the argon arc welding auxiliary inflation device provided by the embodiment of the present application comprises a fan 100, a tee joint 200 and an oxygen detection member. The tee joint 200 has a first inlet 211, a second inlet 221 and an outlet 212. Specifically, the tee joint 200 is T-shaped, and the T-shaped tee joint 200 has a horizontal main pipe body 210 and a branch pipe body 220 which is perpendicular to the main pipe body 210 and located at the middle section of the main pipe body 210. The two ends of the main pipe body 210 are provided with the first inlet 211 and the outlet 212, and the end of the branch pipe body 220 away from the main pipe body 210 is provided with the second inlet 221.

[0024] A reducing pipe 230 is arranged at the first inlet 211, and the fan 100 is connected with the reducing pipe 230 through a wind deflector. The inner diameter of the reducing pipe 230 gradually decreases along the air outlet direction of the fan 100, that is, along the radial direction of the main pipe body 210 from the first inlet 211 to the outlet 212. The reducing pipe 230 partially extends into the first inlet 211 and is arranged towards the outlet 212. The second inlet 221 is located between the reducing pipe 230 and the outlet 212 and is in communication with the pipeline to be inflated. At this time, the main pipe body 210 is parallel to the pipeline to be inflated. The detection end of the oxygen detection member extends into the second inlet 221 through the outlet 212.

[0025] It can be understood that when the user uses the argon arc welding auxiliary inflation device, the second inlet 221 of the tee joint 200 can be first communicated with the pipeline to be inflated, and argon gas is filled into the end of the pipeline to be inflated away from the tee joint 200. At the same time, the fan 100 is started synchronously and blows air towards the reducing pipe 230. After the airflow passes through the reducing pipe 230 with gradually decreasing inner diameter, the speed of the airflow increases. At this time, the airflow of the fan 100 and the argon gas filled into the pipeline form two airflows with different flow rates at the two ends of the branch pipeline. Since the speed of the airflow blown by the fan 100 is greater than the flow rate of the argon gas at the second inlet 221, the pressure at the second inlet 221 is greater than the pressure in the main pipe body 210. Under the action of the pressure at the second inlet 221, the air in the pipeline is pushed out of the pipeline, and then flows to the outlet 212 of the tee joint 200 together with the high-speed airflow. When the oxygen detection member detects that the oxygen content is zero, it indicates that the pipeline to be inflated has been purged of air and filled with argon gas. By arranging the fan 100 and the reducing pipe 230, the pressure difference between the airflows with different flow rates can be utilized to quickly expel the air in the pipeline and quickly fill it with argon gas, thereby effectively improving the inflation efficiency and ensuring the quality of subsequent argon arc welding of the pipeline.

[0026] Further, a detachable sealing assembly 240 is arranged between the second inlet 221 and the pipeline to be inflated, and the second inlet 221 is sealingly connected with the inflation pipeline through the sealing assembly 240. Optionally, the sealing assembly 240 can be a clamp, a flange or a sealing joint arranged between the second inlet 221 and the pipeline to be inflated, and details are not described herein.

[0027] By setting the detachable sealing assembly 240, the user can conveniently assemble and use the auxiliary inflating device, and the sealing between the tee joint 200 and the pipeline to be inflated 300 is ensured, so that external air is prevented from mixing into the pipeline to be inflated and affecting the inflating result.

[0028] Further, the sealing assembly 240 includes a first clamping joint 241 arranged on the tee joint 200 and a second clamping joint 310 arranged on the pipeline to be inflated 300, and the first clamping joint 241 and the second clamping joint 310 are threadedly connected.

[0029] The user can tighten the first clamping joint 241 and the second clamping joint 310 to seal the connection between the tee joint 200 and the pipeline to be inflated 300 and fix the tee joint 200, and can loosen the first clamping joint 241 and the second clamping joint 310 to detach the tee joint 200. By arranging the sealing assembly 240 as the first clamping joint 241 and the second clamping joint 310, the convenience of assembling and disassembling the tee joint 200 can be effectively improved under the premise of ensuring the sealing.

[0030] Referring to Figure 1 It can be understood that a circular blind plate 231 is arranged between the tee joint 200 and the reducing pipe 230, the blind plate 231 is welded and fixed to the middle part of the outer peripheral wall of the reducing pipe 230 and connected with the first inlet 211.

[0031] Since the outer diameter of the reducing pipe 230 is usually gradually reduced along the air outlet direction of the fan 100 as the inner diameter, and the first inlet 211 of the tee joint 200 has a large hole diameter, the reducing pipe 230 can directly pass through the first inlet 211 or pass through most of the first inlet 211, which affects the arrangement of the reducing pipe 230. By arranging the blind plate 231, the user can open a through hole with the same size as the outer diameter of the middle section of the reducing pipe 230 at the center of the blind plate 231, and then position and weld the reducing pipe 230, so as to facilitate the arrangement and assembly of the reducing pipe 230 and improve the structural rationality of the auxiliary inflating device.

[0032] Further, the first inlet 211 is provided with a connecting plate 213 matched with the shape of the blind plate 231, that is, the connecting plate 213 has the same shape and size as the blind plate 231, and the blind plate 231 and the connecting plate 213 are welded and fixed.

[0033] Welding and fixing the blind plate 231 and the connecting plate 213 makes the reducing pipe 230 and the tee joint 200 form an integral whole, effectively improving the portability of the auxiliary inflating device.

[0034] Referring to Figure 2As shown, it can be understood that the end of the reducing pipe 230 away from the fan 100 is provided with a nozzle 232, the nozzle 232 is arranged along the radial direction of the reducing pipe 230, and the end of the nozzle 232 away from the fan 100 is located on the side of the center line of the second inlet 221 (or the center line of the branch pipe body 220) away from the outlet 212.

[0035] By arranging the nozzle 232, the nozzle 232 can guide the accelerated airflow to the connection between the branch pipe body 220 and the main pipe body 210, avoid the accelerated airflow to diffuse at the first inlet 211 and affect the exhaust effect of the auxiliary air charging device, and further improve the structural rationality of the auxiliary air charging device.

[0036] Referring to Figure 2 and Figure 3 As shown, it can be understood that the air guide cover is provided with a clamping groove 111, the clamping groove 111 is matched with the outer shape of the fan 100, the fan 100 and the clamping groove 111 are clamped and matched, and are detachably connected with the air guide cover. Alternatively, the fan 100 can be detachably connected with the air guide cover by screwing, clamping or locking, etc., which will not be described here.

[0037] By arranging the air guide cover, the air guide cover can guide all the airflow blown out by the fan 100 into the reducing pipe 230, and ensure the flow of the reducing pipe 230. By arranging the clamping groove 111, the fan 100 can be conveniently positioned, assembled or disassembled, which improves the convenience of assembling and disassembling the fan 100, and facilitates the user to subsequently overhaul, maintain or replace the fan 100.

[0038] Further, the inner diameter of the air guide cover gradually decreases along the air outlet direction of the fan 100.

[0039] The air guide cover is also arranged in a reducing manner, which can pressurize and speed up the airflow blown out by the fan 100 before the airflow enters the reducing pipe 230, improve the flow rate of the airflow in the tee joint 200, and further enhance the exhaust capacity of the auxiliary air charging device, and further improve the air charging efficiency.

[0040] Still further, the inner diameter of the outlet 212 gradually increases along the air outlet direction of the fan 100, in other words, the outer shape of the outlet 212 is in the shape of a horn opening away from the fan 100.

[0041] The gradually increasing inner diameter of the outlet 212 can guide the mixed gas formed by the airflow of the fan 100 and the air in the pipeline to diffuse out of the tee joint 200 from the outlet 212, and further enhance the exhaust capacity of the auxiliary air charging device.

[0042] Referring to Figure 1 and Figure 3As shown, it can be understood that the reducing pipe 230 is provided with a first connecting part 233, the air deflector is provided with a second connecting part, and the first connecting part 233 and the second connecting part are detachably connected. Optionally, the first connecting part 233 and the second connecting part can be provided as a matched sleeve structure, a mortise and tenon structure, a flange structure, a lock catch structure, a sealed joint or the like, and details are not described herein.

[0043] By arranging the first connecting part 233 and the second connecting part, the user can conveniently and quickly assemble and disassemble the air deflector, and then replace different air deflectors to adapt to different fans 100. Without replacing the tee joint 200, the user can use fans 100 with different powers for different lengths of the to-be-inflated pipeline 300, and the practicality of the auxiliary inflation device is effectively improved.

[0044] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not intended to limit the embodiments of the utility model. For those skilled in the art, various obvious changes, readjustments and replacements can be made without departing from the protection scope of the utility model. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An argon arc welding assisted inflation device characterized by, The utility model relates to a kind of air supply system, including: Fan (100); Three-way joint (200), with first inlet (211), second inlet (221) and outlet (212), the first inlet (211) is equipped with reducing pipe (230), the fan (100) is connected with the reducing pipe (230) by wind scooper, the inner diameter of the reducing pipe (230) gradually reduces along the air outlet direction of the fan (100), and the reducing pipe (230) partially extends into the first inlet (211) and is arranged towards the outlet (212), the second inlet (221) is located between the reducing pipe (230) and the outlet (212) and is communicated with the pipeline (300) to be aerated; Oxygen detection piece, the detection end of the oxygen detection piece extends into the second inlet (221) by the outlet (212).

2. The argon arc welding assisted inflation device of claim 1, wherein, Blind plate (231) is equipped between the three-way joint (200) and the reducing pipe (230), the blind plate (231) is welded with the outer circumferential wall of the reducing pipe (230) and is connected with the first inlet (211).

3. The argon arc welding auxiliary inflation device according to claim 2, characterized by The first inlet (211) is equipped with the connecting plate (213) that the blind plate (231) outer shape matches, and the blind plate (231) and the connecting plate (213) are welded fixed.

4. The argon arc welding assisted inflation device of claim 1, wherein, The reducing pipe (230) is equipped with nozzle (232) away from the fan (100) one end, and the nozzle (232) is arranged along the radial direction of the reducing pipe (230).

5. The argon arc welding assisted inflation device according to any one of claims 1-4, characterized in that, The wind scooper is equipped with clamping groove (111), and the fan (100) and the clamping groove (111) are clamped and matched and are detachably connected with the wind scooper.

6. The argon arc welding auxiliary inflation device according to claim 5, characterized by The inner diameter of the wind scooper gradually reduces along the air outlet direction of the fan (100).

7. The argon arc welding assisted inflation device according to any one of claims 1-4, wherein, The reducing pipe (230) is equipped with first connecting part (233), and the wind scooper is equipped with second connecting part, and the first connecting part (233) and the second connecting part are detachably connected.

8. The argon arc welding assisted inflation device according to any one of claims 1-4, wherein, Second inlet (221) and the pipeline (300) to be aerated are equipped with detachable sealing assembly (240), and the second inlet (221) is sealedly connected with the aerated pipeline by the sealing assembly (240).

9. The argon arc welding auxiliary inflation device according to claim 8, characterized by The sealing assembly (240) includes first clamping joint (241) arranged in the three-way joint (200) and second clamping joint (310) arranged in the pipeline (300) to be aerated, and the first clamping joint (241) and the second clamping joint (310) are threadedly connected.

10. The argon arc welding assisted inflation device according to any one of claims 1-4, wherein, The inner diameter of the outlet (212) gradually increases along the air outlet direction of the fan (100).

Images