Atmospheric local dry method welding drainage device

Abstract

The application provides a normal-pressure local dry-method welding drainage device, relates to the technical field of underwater welding equipment technology, and solves the technical problem that in the prior art, a large amount of welding smoke accumulates in a drainage cover during a long-time underwater laser welding process, and cannot be discharged in time, in a large amount and effectively. The device comprises a drainage cover, a welding component, a smoke discharging component and a sealing component. The smoke discharging component comprises an air suction pump and an air suction grid. The air suction pump is fixedly connected to the drainage cover, the air suction end of the air suction pump is communicated with a containing cavity, and the air suction grid is fixedly connected to the inner wall of the drainage cover. The air suction pump and the air suction grid are matched to suck the smoke generated by welding in the drainage cover. The air suction grid can suck the welding smoke and plasma gas at the back according to the flow trend of the smoke, so that the problem that a large amount of welding smoke accumulates in the drainage cover during a long-time underwater laser welding process and cannot be discharged in time, in a large amount and effectively is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the underwater welding equipment technical field, especially to a normal pressure local dry method welding drainage device. BACKGROUND

[0002] With the urgent demand of human beings for energy, the range of human activities develops to the deeper and wider ocean field, and the traditional underwater laser welding method is more and more limited. Among them, the local dry method underwater welding, in the welding process, with the long time of the welding process, a large amount of welding smoke is accumulated in the drainage cover, which cannot be discharged in time, in large quantity and effectively, so that the welding process cannot be monitored in real time; and too much smoke accumulation can easily cause the quality of the welded joint to decrease; the temperature in the shell rises, which can easily cause the laser power to attenuate; the sealing gasket in the shell has a low temperature resistance, which is easy to burn and needs to be frequently replaced. SUMMARY

[0003] The present application relates to the underwater welding equipment technical field, especially to a normal pressure local dry method welding drainage device.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] The normal pressure local dry method welding drainage device provided by the present application comprises a drainage cover, a welding component, a smoke exhaust component and a sealing component. The drainage cover is provided with a containing cavity with an opening on the end face. The welding component comprises a laser emitter fixedly installed on the drainage cover and a wire feeding assembly for providing welding raw materials. The laser emitter is irradiated at the opening of the containing cavity. The wire feeding assembly is installed on the bottom surface of the containing cavity of the drainage cover. The smoke exhaust component comprises an air suction pump and an air suction grid. The air suction pump is fixedly connected to the drainage cover. The air suction end of the air suction pump is communicated with the containing cavity. The air suction grid is arranged between the air suction end of the air suction pump and the welding point of the laser emitter. The air suction grid is fixedly connected to the inner wall of the drainage cover. The sealing component comprises a sealing ring. The sealing ring is fixedly connected to the opening side wall of the drainage cover provided with the containing cavity. The sealing ring is circumferentially arranged around the opening of the containing cavity.

[0006] By adopting the technical scheme, when in use, the drain cover is covered at a position where welding is needed to be performed, and the sealing member is used to ensure the sealing of the inside of the drain cover during the welding process. When the drain cover is placed, the laser emitter is used to irradiate the gathering point at the welding point, and then the welding rod for laser welding is placed on the welding member. When the welding work is started, the exhaust pump and the exhaust grid are used to suck the smoke generated during the welding of the inside of the drain cover. The exhaust grid can suck the welding smoke and plasma gas at the back according to the flow trend of the smoke and dust, so that the internal shell welding device forms a normal pressure environment, the welding water body is prevented from being polluted, and the internal shell is prevented from being polluted by the smoke and plasma gas, which is beneficial to the formation of the plate surfacing, and the problem that a large amount of welding smoke is accumulated in the drain cover during the long-time underwater laser welding process and cannot be effectively discharged in a large amount is solved.

[0007] Optionally, the smoke exhaust member further comprises a high-pressure air blowing pump and a high-pressure air suction pump, both of which are fixedly connected to the outside of the drain cover. The inner wall of the drain cover is provided with an air blowing pipeline, the air blowing end of the air blowing pipeline is located below the wire feeding assembly, the air inlet end of the air blowing pipeline is in communication with the high-pressure air blowing pump, the inner wall of the drain cover is provided with an air suction pipeline, the air suction end of the air suction pipeline is in communication with the containing cavity, and the air outlet end of the air suction pipeline is in communication with the high-pressure air suction pump. The drain cover is fixedly connected with a gas pressure sensing device for detecting the pressure in the containing cavity.

[0008] By adopting the technical scheme, the gas pressure sensing device is used to monitor the gas pressure in the internal welding shell in real time, the high-pressure air blowing pump and the high-pressure air suction pump are used to form a normal pressure environment in the drain cover, and the high-pressure air suction pump can timely suck the smoke generated in the welding process, so that the smoke in the drain cover is effectively discharged.

[0009] Optionally, the air blowing end of the air blowing pipeline and the air suction end of the air suction pipeline are oppositely arranged.

[0010] By adopting the technical scheme, the oppositely arranged air blowing end of the air blowing pipeline and the air suction end of the air suction pipeline can timely discharge the smoke generated during the welding process of the welding member, and can dry and preliminarily blow and clean the welding bead, so that the welding joint is better formed. In addition, the high-pressure air suction pump can separate the gas mixed with water vapor and impurities on the surface of the welding bead from the drain cover.

[0011] Optionally, the smoke exhaust member further comprises an annular gas heating resistor, which is arranged between the high-pressure air blowing pump and the air blowing pipeline and is in communication with the high-pressure air blowing pump and the air blowing pipeline.

[0012] By adopting the technical scheme, the gas filled into the drainage cover is heated, so that the gas blown out of the blowing end of the blowing pipeline can preheat the welding bead, and the heated gas can better carry away the water vapor generated in the drainage cover during welding, thereby ensuring the dryness inside the drainage cover.

[0013] Optionally, the wire feeding assembly comprises a sliding rail, a sliding rod and a rotating arm, the sliding rail is fixedly connected to the bottom surface of the accommodating cavity, the sliding rod is slidingly arranged on the sliding rail, and the sliding direction of the sliding rod is close to or away from the irradiation point of the laser emitter, one end of the rotating arm is hingedly connected to the end of the sliding rod away from the sliding rail, and the other end of the rotating arm is fixedly connected with the obliquely arranged wire feeding and blowing pipe, and the end of the wire feeding and blowing pipe is directed towards the irradiation point of the laser emitter.

[0014] By adopting the technical scheme, before welding, the welding rod is placed on the wire feeding and blowing pipe, and the rotating arm is rotated, so that the welding wire on the wire feeding and blowing pipe is aligned with the irradiation point of the laser emitter, and in this process, the sliding rod can be pushed to move on the sliding rail, thereby facilitating accurate adjustment of the position of the end of the wire feeding and blowing pipe to the irradiation point of the laser emitter.

[0015] Optionally, the sealing member comprises a water inlet pipe for communicating with an external high-pressure water pump, the drainage cover is circumferentially provided with a plurality of water passing channels along the opening of the accommodating cavity, the drainage cover is provided with a plurality of drainage channels communicated with the water passing channels, the drainage channels are arranged on the side wall of the drainage cover, the drainage direction of the drainage channels and the included angle between the corresponding drainage cover side wall are within the range of 15-45 degrees, and the drainage channels are communicated with the water inlet pipe.

[0016] By adopting the technical scheme, when in use, the high-pressure water pump of the external device is used to fill high-pressure water flow into the water inlet pipe, the high-pressure water flow is discharged through the drainage pipe after passing through the water passing channel, so as to form a water curtain at the outer wall of the drainage cover to isolate the external water from entering the protective cover and reduce the pressure in the drainage cover during welding. Thus, the sealing property of the drainage cover is realized, a local dry space is formed, and water intrusion into the drainage cover is prevented.

[0017] Optionally, the sealing member further comprises a filter tank, the filter tank is fixedly installed on the outside of the drainage cover, the drainage cover is provided with an inner ring groove along the circumference thereof, the groove opening of the inner ring groove is arranged on the same side as the opening of the accommodating cavity, and the exhaust end of the high-pressure air suction pump is communicated with the inner ring groove.

[0018] By adopting the technical scheme, when in use, the high-pressure air suction pump exhausts the smoke in the filter tank and discharges it into the inner ring groove, so as to form a smoke curtain with relatively large pressure in the inner ring groove, and the water vapor possibly generated in the high-pressure water curtain outside is blocked and absorbed, thereby achieving the effect of further waterproof sealing.

[0019] Optionally, the sealing ring further comprises a foamed silica gel sealing washer and a polytetrafluoroethylene washer, the foamed silica gel sealing washer is fixedly connected to the side wall surface at the opening of the drain cover accommodating cavity, the foamed silica gel sealing washer is located between the water passing channel and the inner ring groove, and the polytetrafluoroethylene washer is fixedly connected to the side wall surface at the opening of the drain cover accommodating cavity, and the polytetrafluoroethylene washer is located between the inner ring groove and the accommodating cavity.

[0020] By adopting the above technical scheme, the foamed silica gel sealing washer is arranged on the side wall at the opening of the drain cover accommodating cavity between the water passing channel and the inner ring groove, so that the smoke in the inner ring groove can pass through the fine eyelet of the foamed silica gel sealing washer under the gas pressure and contact the water vapor generated in the water curtain, and the foamed silica gel sealing washer blocks the water vapor from entering. Meanwhile, the polytetrafluoroethylene washer arranged between the inner ring groove and the accommodating cavity of the drain cover can block the smoke and the water vapor, thereby improving the sealing performance of the drain cover.

[0021] Optionally, the sealing member further comprises an exhaust pipe, the drain cover is provided with a smoke exhaust groove in the circumferential direction, the smoke exhaust groove is arranged between the inner ring groove and the water passing channel, the foamed silica gel sealing washer is fixedly connected to the side wall of the drain cover between the smoke exhaust groove and the inner ring groove, one end of the exhaust pipe is communicated with the air suction pump, and the other end of the exhaust pipe is communicated with the smoke exhaust groove.

[0022] By adopting the above technical scheme, the smoke exhaust groove is arranged on the drain cover, so that the smoke gas enters the smoke exhaust groove after contacting the water vapor through the foamed silica gel sealing washer, the smoke gas carrying the water vapor is extracted through the exhaust pipe by the air suction pump, thereby realizing the cyclic discharge of the smoke gas and the discharge of the water vapor.

[0023] Optionally, the inside of the drain cover is further fixedly provided with a high-speed camera for monitoring the smoke condition in the accommodating cavity.

[0024] By adopting the above technical scheme, the high-speed camera dynamically monitors the smoke generated in the drain cover during the welding process, so as to facilitate the adjustment of the high-pressure air blowing pump and the high-pressure air suction pump to change the normal pressure state in the drain cover.

[0025] The preferred technical scheme of the present application can at least produce the following technical effects:

[0026] 1. The smoke generated by the welding inside the drain cover is sucked by the cooperation of the air suction pump and the air suction grille. The air suction grille can suck the welding smoke and plasma gas at the back according to the flow trend of the smoke and dust, so that the internal shell welding device forms a normal pressure environment, avoids pollution of the welding water body, forms a clearer environment of the internal shell, avoids secondary pollution of the welding process caused by the smoke and plasma gas formed by the internal shell, is beneficial to the formation of the plate surfacing, and solves the problem that a large amount of welding smoke accumulates in the drain cover during the long-time underwater laser welding process, and cannot be discharged in time, in large quantity and effectively.

[0027] 2. By arranging the foamed silica gel sealing gasket on the side wall of the opening of the drain cover accommodating cavity between the water passage and the inner ring groove, the smoke in the inner ring groove can pass through the fine eyelet of the foamed silica gel sealing gasket under its gas pressure and contact the water vapor generated in the water curtain, and the foamed silica gel sealing gasket blocks the water vapor from entering. The polytetrafluoroethylene gasket arranged between the inner ring groove and the accommodating cavity of the drain cover can block the smoke and water vapor, and improve the sealing performance of the drain cover.

[0028] 3. By filling high-pressure water flow into the water inlet pipe by using the external high-pressure water pump, the high-pressure water flow is discharged through the drain pipe after passing through the water passage, so that the water curtain is formed at the outer wall of the drain cover to isolate the outside water from entering the protection cover and reduce the pressure in the welding process inside the drain cover. Thus, the sealing performance of the drain cover is realized, a local dry space is formed, and water intrusion into the drain cover is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0030] Figure 1 is the overall structure schematic diagram provided by the embodiment of the present application;

[0031] Figure 2 is the internal structure cross-sectional view provided by the embodiment of the present application;

[0032] Figure 3 is the internal structure schematic diagram provided by the embodiment of the present application.

[0033] 100, drain cover; 110, laser emitter; 120, gas pressure sensing device; 130, high-speed camera; 200, smoke exhaust member; 210, high-pressure suction pump; 220, high-pressure blowing pump; 230, filter tank; 240, filter pump; 250, annular gas heating resistor; 260, blowing pipeline; 270, suction pipeline; 280, exhaust pipeline; 290, air extraction pump; 300, sealing member; 310, water inlet pipe; 320, water drainage channel; 330, smoke exhaust pipe; 340, water passing channel; 350, smoke exhaust groove; 360, inner ring groove; 370, foamed silica gel sealing washer; 380, polytetrafluoroethylene washer; 400, welding member; 410, sliding rail; 420, sliding rod; 430, rotating arm; 440, wire feeding blowing pipe; 450, air extraction grid. DETAILED DESCRIPTION

[0034] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The following will be described in detail in combination with the accompanying drawings Figures 1-3 Further detailed description of the present application, the embodiment of the present application discloses a kind of normal pressure local dry method welding drainage device.

[0038] Referring toFigure 1 and Figure 2 As shown in FIGS. 1-3, the atmospheric pressure local dry welding drainage device comprises a drainage cover 100, a welding member 400, a smoke exhaust member 200 and a sealing member 300. The drainage cover 100 is provided with a containing cavity with an opening on the bottom surface. The bottom surface of the containing cavity is fixedly connected with a gas pressure sensing device 120 for detecting the pressure in the containing cavity and a high-speed camera 130 for monitoring the smoke condition in the containing cavity. The welding member 400 is installed on the bottom surface of the containing cavity for welding the underwater weld joint. The smoke exhaust member 200 is fixedly connected to the outer side of the drainage cover 100 for exhausting the smoke generated by the welding member 400 during the welding process. The sealing member 300 is arranged at the opening of the containing cavity of the drainage cover 100 to improve the sealing performance of the drainage cover 100 during the working process.

[0039] Referring to Figure 2 and Figure 3 As shown in FIGS. 1-3, the welding member 400 comprises a laser emitter 110 and a wire feeding assembly arranged on the bottom surface of the containing cavity. The laser emitter 110 is fixedly connected to the top surface of the drainage cover 100. The laser beam emitted by the laser emitter 110 forms a conical shape and is transmitted to the vicinity of the welded component through an optical fiber. The laser beam penetrates through the local gas phase zone and acts on the surface of the welded component. The welded component absorbs the laser energy to melt, thereby realizing welding. In this process, the welding rod is placed on the wire feeding assembly for being irradiated by the laser beam to fill in the weld joint.

[0040] The wire feeding assembly comprises a sliding rail 410, a sliding rod 420 and a rotating arm 430. The sliding rail 410 is fixedly connected to the bottom surface of the containing cavity, and the length direction of the sliding rail 410 passes through the axis of the laser beam emitted by the laser emitter 110. One end of the sliding rod 420 is slidingly arranged on the sliding rail 410. The connection between the sliding rod 420 and the sliding rail 410 is in the dovetail groove and dovetail block mode. The sliding direction of the sliding rod 420 is along the length direction of the sliding rod 420 to move close to or away from the light beam emitted by the laser emitter 110. The length extension direction of the sliding rod 420 is perpendicular to the length extension direction of the sliding rail 410.

[0041] In the embodiment of the present application, the rotating arm 430 is arranged in an L shape. One end of the rotating arm 430 is hinged to the end of the sliding rod 420 away from the sliding rail 410. The other end of the rotating arm 430 is fixedly connected with an inclined wire feeding and gas blowing pipe 440. The wire feeding and gas blowing pipe 440 is arranged in an inclined manner, and an inner cavity for placing the welding rod is formed through the axis of the wire feeding and gas blowing pipe 440. During the welding process, the welding rod is inserted into the inner cavity of the wire feeding and gas blowing pipe 440, and the welding rod end away from the rotating arm 430 is located below the conical tip of the laser beam. The welding rod and the side wall of the inner cavity are in a gap fit, that is, the wire feeding and gas blowing pipe 440 can be filled with gas.

[0042] And can be according to the choice of different welding process to choose single laser filler or single laser self-fusion welding, when the choice of laser filler welding, through the wire feeding and blowing pipe 440, while feeding and blowing, welding. When single laser self-fusion welding is carried out, through the wire feeding and blowing pipe 440, stop feeding only by the inner cavity of the wire feeding and blowing pipe 440 to blow a specific flow of protective gas to carry out welding.

[0043] Referring to Figure 2 And Figure 3 As shown in the figure, the smoke exhaust member 200 includes an annular gas heating resistor 250, a high-pressure blowing pump 220 and a high-pressure suction pump 210, and the high-pressure blowing pump 220 and the high-pressure suction pump 210 are fixedly connected to the top surface of the drain cover 100. The inner wall of the drain cover 100 is symmetrically provided with a blowing pipe 260 and a suction pipe 270, and the blowing end of the blowing pipe 260 and the suction end of the suction pipe 270 are oppositely arranged and are both arranged below the slide rail 410.

[0044] The inner wall of the exhaust cover is provided with an inner storage cavity for placing the annular gas heating resistor 250, and the annular gas heating resistor 250 is fixedly connected in the inner storage cavity. Among them, the gas inlet end of the blowing pipe 260 is communicated with the annular gas heating resistor 250, and the annular gas heating resistor 250 is communicated with the high-pressure blowing pump 220, and the high-pressure blowing pump 220 absorbs gas from the outside into the annular gas heating resistor 250, and the annular gas heating resistor 250 heats the entering air and flows into the blowing pipe 260, and then blows into the containing cavity through the blowing end of the blowing pipe 260.

[0045] The annular gas heating resistor 250 is arranged in a ring shape, which prolongs the movement path of the gas in the annular gas heating resistor 250, ensures that the gas is converted from cold gas to warm gas, and the annular gas heating resistor 250 effectively utilizes the inner storage cavity space.

[0046] The gas outlet end of the suction pipe 270 is communicated with the high-pressure suction pump 210, and the high-pressure suction pump 210 discharges the gas sucked from the containing cavity. Among them, the blowing end of the blowing pipe 260 and the suction end of the suction pipe 270 are both square air outlet structures, which can dry and preliminarily blow and clean the welding bead and preheat it, so that the welded joint can be better formed.

[0047] The smoke exhaust mechanism further comprises an air suction pump 290, a filter pump 240 and an air suction grid 450, both of which are fixedly connected to the top surface of the drain cover 100. The air suction grid 450 is arranged in the accommodating cavity, and the length direction side wall of the air suction grid 450 is connected to the two opposite length direction side walls of the accommodating cavity. One width direction side wall of the air suction grid 450 is connected to the width direction side wall of the accommodating cavity, and the other width direction side wall of the air suction grid 450 is connected to the bottom surface of the accommodating cavity. The air suction grid 450 is symmetrically arranged on both sides of the laser beam emitted by the laser emitter 110 with the wire feeding assembly.

[0048] The air suction pump 290 is arranged between the air suction grid 450 and the width direction side wall of the accommodating cavity. The air suction pump 290 is in communication with the filter pump 240. The air suction pump 290 exhausts the smoke generated in the welding process after being filtered by the air suction grid 450, and then exhausts the smoke into the filter pump 240 for further filtering. Finally, the filter pump 240 exhausts the smoke to the bottom of the water, so as to further exhaust and adjust the smoke in the accommodating cavity.

[0049] Referring to Figure 2 and Figure 3 The sealing member 300 comprises a water inlet pipe 310 and a sealing ring fixedly connected to the side wall of the opening end of the accommodating cavity of the drain cover 100. The drain cover 100 is provided with a plurality of water passing channels 340 arranged in a matrix along the circumferential direction of the accommodating cavity, and the extension direction of the water passing channels 340 is parallel to the height direction of the drain cover 100. The drain cover 100 is further provided with a plurality of drain channels 320 arranged on the outer side wall, each of which is in communication with one water passing channel 340, and the drainage direction of the drain channel 320 and the corresponding side wall of the drain cover 100 form an angle in the range of 15 degrees to 45 degrees, and in the embodiment of the application, the drainage direction of the drain channel 320 and the corresponding side wall of the drain cover 100 form an angle of 30 degrees.

[0050] One end of the water inlet pipe 310 is in communication with the plurality of water passing channels 340, and the other end of the water inlet pipe 310 is in communication with an external high-pressure water pump. When the external high-pressure water pump fills the water passing channels 340 with water, the water flow in the water passing channels 340 is exhausted through the drain channels 320, and the water flow exhausted through the drain channels 320 forms a water curtain at the side wall of the drain cover 100.

[0051] The sealing member 300 further comprises a filter tank 230, a smoke exhaust pipe 330 and an exhaust pipe 280. The filter tank 230 is fixedly connected to the top surface of the drain cover 100. The high-pressure air suction pump 210 discharges the suctioned smoke dust into the filter tank 230 for filtration, and then discharges the filtered smoke into the air suction pump 290 through the filter pump 240. The drain cover 100 is provided with an inner ring groove 360 and a smoke exhaust groove 350 along the circumference thereof. The opening directions of the inner ring groove 360 and the smoke exhaust groove 350 are arranged in the same direction as the opening of the accommodating cavity, and the inner ring groove 360 is closer to the accommodating cavity than the smoke exhaust groove 350. One end of the smoke exhaust pipe 330 is communicated with the filter tank 230, and the other end of the smoke exhaust pipe 330 is communicated with the inner ring groove 360. One end of the exhaust pipe 280 is communicated with the smoke exhaust groove 350, and the other end of the exhaust pipe 280 is communicated with the air suction pump 290.

[0052] Referring to Figure 2 and Figure 3 The sealing ring comprises a foamed silica gel sealing gasket 370 and a polytetrafluoroethylene gasket 380. The foamed silica gel sealing gasket 370 is arranged between the water passage 340 and the inner ring groove 360, and is fixedly connected to the side wall of the opening of the accommodating cavity of the drain cover 100. The polytetrafluoroethylene gasket 380 is arranged between the inner ring groove 360 and the accommodating cavity, and is fixedly connected to the side wall of the opening of the accommodating cavity of the drain cover 100.

[0053] During use, the high-pressure air suction pump 210 discharges the suctioned smoke dust into the filter tank 230 for filtration. The filtered smoke is filled into the inner ring groove 360 through the smoke exhaust pipe 330 under the action of pressure, and forms a smoke screen in the inner ring groove 360 under the action of the pressure of the smoke. Then, the smoke passes through the internal structural gap of the foamed silica gel sealing gasket 370 into the smoke exhaust groove 350 under the action of the pressure of the smoke, and is discharged into the air suction pump 290 through the exhaust pipe 280.

[0054] In this way, the smoke is filled into the annular gas heating resistor 250 by the high-pressure air blowing pump 220 from the ambient gas. The annular gas heating resistor 250 heats the entering air and flows into the air blowing pipe 260, and then blows into the accommodating cavity through the air blowing end of the air blowing pipe 260. The high-pressure air suction pump 210 discharges the gas in the accommodating cavity into the filter tank 230 through the air suction pipe 270 for filtration. The filtered smoke is filled into the inner ring groove 360 through the smoke exhaust pipe 330 under the action of pressure, and forms a smoke screen in the inner ring groove 360 under the action of the pressure of the smoke. Then, the smoke passes through the internal structural gap of the foamed silica gel sealing gasket 370 into the smoke exhaust groove 350 under the action of the pressure of the smoke, and is discharged into the air suction pump 290 through the exhaust pipe 280. The smoke forms an internal circulation.

[0055] The smoke is effectively utilized in the process of discharging the smoke.

[0056] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An atmospheric pressure, local dry process, soldering drainage device, characterized in that, The utility model provides a welding device, including drain cover (100), welding component (400), smoke exhaust component (200) and sealing component (300), the drain cover (100) is opened with the containing cavity of opening located end face, the welding component (400) includes the laser emitter (110) of fixed mounting on drain cover (100) and be used for providing the wire feeding assembly of welding raw material, the laser emitter (110) irradiates at the opening of containing cavity, the wire feeding assembly is installed at the containing cavity bottom surface of drain cover (100), the smoke exhaust component (200) includes air suction pump (290) and air suction grid (450), the air suction pump (290) is fixedly connected on drain cover (100), the air suction end of air suction pump (290) is communicated with containing cavity, the air suction grid (450) is set between the air suction end of air suction pump (290) and the welding point of laser emitter (110), the air suction grid (450) is fixedly connected on the inner wall of drain cover (100), the sealing component (300) includes sealing ring, the sealing ring is fixedly connected on the opening side wall of drain cover (100) opening containing cavity, and the sealing ring is circumferentially arranged around the opening of containing cavity; The smoke exhaust component (200) further includes a high-pressure air blowing pump (220) and a high-pressure air suction pump (210), the high-pressure air blowing pump (220) and the high-pressure air suction pump (210) are fixedly connected to the outer side of the drain cover (100), the inner wall of the drain cover (100) is provided with an air blowing pipeline (260), the air blowing end of the air blowing pipeline (260) is located below the wire feeding assembly, the air inlet end of the air blowing pipeline (260) is communicated with the high-pressure air blowing pump (220), the inner wall of the drain cover (100) is provided with an air suction pipeline (270), the air suction end of the air suction pipeline (270) is communicated with the containing cavity, and the air outlet end of the air suction pipeline (270) is communicated with the high-pressure air suction pump (210), and the drain cover (100) is fixedly connected with a gas pressure sensing device (120) for detecting the pressure in the containing cavity; The sealing component (300) includes a water inlet pipe (310) for communicating with an external high-pressure water pump, the drain cover (100) is provided with a plurality of water passing channels (340) along the circumference of the opening of the containing cavity, the drain cover (100) is provided with a plurality of drain channels (320) communicated with the water passing channels (340), the drain channels (320) are arranged on the side wall of the drain cover (100), the drainage direction of the drain channels (320) and the included angle between the corresponding side wall of the drain cover (100) are within the range of 15 degrees to 45 degrees, and the drain channels (320) are communicated with the water inlet pipe (310); The sealing component (300) further includes a filter tank (230) and a smoke exhaust pipe (330), the filter tank (230) is fixedly installed on the outer side of the drain cover (100), the drain cover (100) is provided with an inner ring groove (360) along the circumference thereof, the groove opening of the inner ring groove (360) is arranged on the same side as the opening of the containing cavity, and the air outlet end of the high-pressure air suction pump (210) is communicated with the inner ring groove (360). In use, the high-pressure suction pump (210) discharges the suctioned smoke dust into the filter tank (230) for filtration, and the filtered flue gas is filled into the inner annular groove (360) by the exhaust pipe (330) under the action of pressure, and forms a smoke screen in the inner annular groove (360) under the action of the pressure of the flue gas.

2. A normal pressure local dry method welding drainage device according to claim 1, characterized in that, The blowing end of the blowing pipe (260) is arranged opposite to the suction end of the suction pipe (270).

3. A normal pressure local dry method welding drainage device according to claim 1, characterized in that, The smoke exhaust member (200) further comprises an annular gas heating resistor (250) arranged between the high-pressure blowing pump (220) and the blowing pipe (260), and the annular gas heating resistor (250) is communicated with the high-pressure blowing pump (220) and the blowing pipe (260) respectively.

4. A normal pressure local dry method welding drainage device according to claim 1, characterized in that, The wire feeding assembly comprises a sliding rail (410), a sliding rod (420) and a rotating arm (430), the sliding rail (410) is fixedly connected to the bottom surface of the accommodating cavity, the sliding rod (420) is slidingly arranged on the sliding rail (410), and the sliding direction of the sliding rod (420) is close to or away from the irradiation point of the laser emitter (110), one end of the rotating arm (430) is hingedly connected to the end of the sliding rod (420) away from the sliding rail (410), and the other end of the rotating arm (430) is fixedly connected with an obliquely arranged wire feeding and blowing pipe (440), and the end of the wire feeding and blowing pipe (440) is directed to the irradiation point of the laser emitter (110).

5. A normal pressure local dry method welding drainage device according to claim 1, characterized in that, The sealing member (300) further comprises an exhaust pipe (280), the drain cover (100) is provided with an exhaust slot (350) along the circumference thereof, the exhaust slot (350) is arranged between the inner annular groove (360) and the water passage (340), the foamed silica gel sealing gasket (370) is fixedly connected to the side wall of the drain cover (100) between the exhaust slot (350) and the inner annular groove (360), one end of the exhaust pipe (280) is communicated with the air suction pump (290), and the other end of the exhaust pipe (280) is communicated with the exhaust slot (350).

6. A normal pressure local dry method welding drainage device according to claim 5, characterized in that, The inside of the drain cover (100) is further fixedly installed with a high-speed camera (130) for monitoring the condition of the flue gas in the accommodating cavity.

7. A gravity local dry-fit drainage device according to claim 1, wherein ​

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