170 results about "Welding fume" patented technology

The invention provides a rapid dust removal system and method for engineering machinery welding, and the system comprises a rack, an air suction cover which is movably arranged on the rack and is used for capturing welding smoke dust; the dust removal purifier is arranged on the rack along with the suction hood and is used for purifying welding fume; the visual detection device comprises a camera and a visual calculation unit in communication connection with the camera, and the camera is arranged on the air suction cover and used for recognizing the welding point position in real time; the visual calculation unit is used for calculating the relative position of the welding point position and the suction hood and outputting a control signal; the servo driving mechanism is used for driving the dust removal purifier and the air suction cover to move along the rack, the servo driving mechanism is in communication connection with the visual inspection device, and the air suction cover is driven to move to the position over the welding point position according to the control signal; the dust removal efficiency can be improved, the energy consumption can be reduced, and the welding gun can be accurately tracked to collect smoke dust.

The invention discloses a building steel welding device for building construction, relates to the technical field of building construction welding equipment, and provides the following scheme that the building steel welding device comprises a machine body and a rotatable operation panel fixed to one side of the machine body, and further comprises a moving mechanism arranged in the machine body and used for conducting welding moving butt joint on building steel for building construction; and the rotating mechanism is arranged above the moving mechanism and used for adjusting the welding angle of the building steel for building construction. The device is high in adaptability, can be compatible with steel with different sizes of 0.5 m-15m and various section types, does not need to frequently replace clamps, is flexible in welding, can achieve multi-position welding through a six-degree-of-freedom mechanical arm, enables the fusion depth error to be smaller than or equal to + / -0.2 mm through laser tracking, achieves efficient operation, completes track input within 3 minutes through graphical programming, automatically completes multi-layer and multi-pass welding, improves the flaw detection passing rate, and is suitable for large-scale popularization and application. Safety and environmental protection are guaranteed, force feedback collision prevention is achieved, the smoke exhaust mechanism purifies welding smoke in a directional mode, and remote monitoring and data tracing are supported.

The invention relates to the technical field of power distribution cabinet welding, in particular to a power distribution cabinet body welding device which comprises a base station used for conveying power distribution cabinet bodies in sequence, and the base station is provided with a welding device body fixed through a side arm and used for welding supporting pieces to the inner walls of the power distribution cabinet bodies. The welding device comprises a sliding platform fixed to the side arm. Through active cooling and physical supporting of the cooling plate and the circulating cooling system of the cooling plate on the outer wall of the cabinet body during welding, welding heat input is absorbed and guided out, welding deformation of the thin-wall cabinet body is restrained, and the appearance precision of the cabinet body, the mounting position accuracy of a supporting piece and the welding precision are guaranteed; by means of cooperation of the dust suppression air inlet groove and the suction pump, effective collection of welding fume is achieved, and the dual functions of dust removal, environmental protection and enhanced heat dissipation are synchronously achieved through filtering purification and directional air injection towards the liquid outlet pipe; and the production efficiency and the product consistency of the power distribution cabinet are improved.

The utility model discloses a novel wall-mounted welding fume filtering device, relates to the technical field of filtering devices, and aims to solve the technical problems that the current wall-mounted filtering device is inconvenient to clean and maintain and is easy to block to influence the filtering quality, the novel wall-mounted welding fume filtering device comprises a frame body and a rotary drum, and the rear end of the frame body is provided with an assembly frame and a built-in piece; a fan is arranged at the upper end of the frame body, a bottom cylinder is arranged at the lower end of the frame body, a filter cylinder is installed in the bottom cylinder, the rotating cylinder is rotatably installed on the inner side of the frame body through a bearing, a built-in cylinder is installed in the rotating cylinder, side grooves are formed in the lower end of the outer side of the built-in cylinder in an annular array mode, and a connecting pipe is arranged at the front end of the rotating cylinder in a penetrating mode; and a dust suction pipe is mounted at the outer end of the connecting pipe. The filter cartridge cleaning device has the advantages that the filter cartridge cleaning function is convenient, the cleaning difficulty is reduced, and the filtering quality is ensured.

The utility model relates to the technical field of welding fume treatment, and discloses a polishing device for producing a single valve bonnet, which comprises a shell, a T-shaped rotating rod is slidably connected to the right side in the shell, a rotating T-shaped block is fixedly connected to the top of the T-shaped rotating rod, a bolt strip is connected to the front side of the rotating T-shaped block in a clamping manner, and the bolt strip is fixedly connected to the top of the T-shaped rotating rod. A fixing disc is fixedly connected to the left side of the T-shaped rotating rod, a plurality of concave fixing blocks are slidably connected to the left side of the fixing disc, and bolts are in threaded connection with the interiors of the concave fixing blocks. According to the polishing device, the bidirectional threaded rod is manually rotated, the limiting plate and the lead screw are in contact limiting through threaded transmission, the motor is started to drive the lead screw to rotate at a high speed, the lead screw is in threaded connection with the movable plate, and the movable plate linearly slides under the constraint of the limiting groove, so that the polishing device is driven to move to adjust the position, and the adaptability of the polishing device is improved.

The utility model discloses self-cleaning type welding fume dust removal equipment, which relates to the technical field of welding fume dust removal equipment and comprises a dust removal box, a servo motor is fixedly connected to the upper end of the dust removal box, a rotating column is fixedly connected to the output end of the servo motor, and one end, far away from the servo motor, of the rotating column penetrates through the inner top wall of the dust removal box. The end, located in the dust removal box, of the rotating column is fixedly connected with a rotating disc, the side wall of the rotating disc is evenly and fixedly connected with three driving plates, the side wall of the dust removal box is fixedly connected with an installation base, the side wall of the installation base is provided with a second installation groove, and the inner wall of the second installation groove is fixedly connected with a first spring. Therefore, welding slag and welding dust on the side wall of the dust removal filter cartridge are automatically cleaned, the requirement for manual intervention is greatly reduced, the automation level of equipment is improved, workers do not need to frequently clean the dust removal filter cartridge, and the workload of the workers is reduced.

The invention relates to the technical field of dust removal, and discloses a workshop welding fume dust removal system which comprises a smoke inlet pipeline, a smoke suction channel, a first filter channel, a second filter channel, a third filter channel, a dehumidification channel, an air suction channel and an air outlet channel which are connected in sequence, welding fume with dust enters from the smoke inlet pipeline, and clean air is discharged from the air outlet channel. A smoke guide fan is arranged in the smoke suction channel and accelerates inflow of air in the smoke inlet pipeline, an air suction and exhaust fan is arranged in the air suction channel and accelerates exhaust of air in the air outlet channel, the device is provided with a plurality of filtering structures, smoke with dust is filtered thoroughly, a dehumidification structure is arranged, moisture in filtered gas is removed, water vapor in a workshop is reduced, and the environment is protected. The environment quality of a workshop is improved, production safety is guaranteed, the device can be hung on the upper portion of the workshop in a targeted mode, ground space waste and influence on normal operation of the workshop can be well avoided, and space resource waste can be avoided to the maximum extent.

The invention belongs to the technical field of intelligent welding systems, particularly relates to a welding device for a water conservancy construction pipeline, and aims at solving the problems that in the using process of an existing welding device, smoke generated by welding is inconvenient to treat in time, the working environment is severe, removed welding slag is inconvenient to discharge, and the welding efficiency is high. In order to solve the problem that accumulated welding slag may interfere with stable operation and subsequent welding quality of the device, the invention provides the following scheme that the device comprises a shell, an annular seat and an air bellow, and the air bellow is fixedly mounted at the top of the shell. All working procedures can be driven to work collaboratively and continuously only through a single power source, the welding automation degree and efficiency are remarkably improved, meanwhile, the field problems of welding smoke pollution and unsmooth welding slag removal and discharge are thoroughly solved, and high-quality, cleaning and full-process automation of water conservancy construction pipeline welding are achieved.

The application discloses a large-scale positioner welding fume collecting cover and belongs to the technical field of fume collecting covers. The large-scale positioner welding fume collecting cover comprises a positioner unit, a controller, a welding unit, a gantry type supporting frame, a displacement trolley, a fume collecting unit and a dust removal host, the controller is internally provided with a position control module, the fume collecting unit comprises a square cover body fixedly embedded with a skeleton type frame, the inner side of the square cover body is formed with multiple compartments through a partition plate, the skeleton type frame is externally provided with a reducing pipe, and multiple fume collecting pipes are arranged on the reducing pipe in a spaced and communicated mode. The large-scale positioner welding fume collecting cover can control the state of a turning plate by adopting a reversing driver, can automatically construct a local dust collecting space according to needs, can collect idle dust removal suction forces at the same time of constructing the dust collecting space, and directly applies the dust removal suction forces to fixed-point strong dust collecting of a welding position. The large-scale positioner welding fume collecting cover can realize fixed-point dust collecting following and local area dust collecting following during the welding process, can guarantee fume collecting efficiency, and prevents welding fume from escaping.

This invention provides a laser welding copper nozzle, belonging to the technical field of laser welding components. The laser welding copper nozzle includes an installation assembly, a protective sleeve, an inner liner, a dust extraction pipe, and an air inlet connector. In this invention, one end of the dust extraction pipe passes sequentially through the protective sleeve and the inner liner and extends into the first connecting through hole, drawing dust near the opening at the bottom of the outer sleeve. This effectively removes welding fumes and heat, resulting in better performance. The second part of the inner liner forms a ring-shaped first air guiding channel with the inner wall of the protective sleeve. This first air guiding channel can deliver the protective gas supplied by the air inlet connector to the first connecting through hole, resulting in more uniform diffusion of the protective gas and a better oxygen-free welding environment.

This invention discloses an air intake device for a welding fume purifier, comprising a collection box. Two symmetrically arranged sealing bases are provided on one side wall of the collection box. A rotating base is located within each sealing base, and a collection pipe extends through the rotating base into the collection box. A fixing pipe is fixedly connected to the end of the collection pipe furthest from the collection box. An auxiliary mechanism for collecting welding fumes is provided on the side wall of the fixing pipe. This invention solves the problem of inconvenient height and direction adjustment during welding fume intake in welding fume purifiers. The invention incorporates a connecting ring, a filter pipe, a cylinder, a rotating gear, and a drive gear. By controlling the extension and retraction of the cylinder and the rotation of the motor via a control panel, the rotation and vertical movement of the collection pipe can be easily achieved, thus aligning the collection pipe with the welding position and facilitating the adjustment of the collection pipe's position during air intake.

This utility model relates to the field of laser welding technology and proposes an underwater welding laser head, including a stainless steel tube cover; a connecting plate fixedly connected to the inner wall of the stainless steel tube cover, one end of which is fixedly connected to the end of the laser welding head; a spray disc fixedly connected to the lower end of the inner wall of the stainless steel tube cover, with spray holes at equal angles at the bottom of the spray disc; a connecting pipe extending to the outside of the stainless steel tube cover fixedly connected to one side of the top of the spray disc, with the bottom end of the connecting pipe communicating with the interior of the spray disc; and a protective cover movably connected to the bottom of the stainless steel tube cover, with fixing components at the top of the protective cover and the bottom of the stainless steel tube cover. Through the spray disc, connecting pipe, and spray holes, an umbrella-shaped protective gas curtain can be sprayed out, ensuring that a small area below the end of the laser welding head is free of water, facilitating welding operations. At the same time, high-pressure gas blows away welding fumes, ensuring smooth welding.

The utility model provides a kind of welding device of visual positioning, it includes welding robot, welding robot has mechanical arm, and mechanical arm tip is provided with mounting head, and mounting head is installed with welding torch and visual positioning equipment, and mounting head is also fixedly connected with mounting plate, welding torch has the welding end of departing from mounting plate and the wiring end similar to mounting plate, and mounting plate is detachably connected with suction pipe, and suction pipe has the inlet end towards welding torch welding end side, and suction pipe other end passes through mounting plate setting, and suction pipe and visual positioning equipment are arranged in two sides of welding torch.This utility model solves the problem that the overall efficiency cannot be improved in the prior art to avoid the generation of a large amount of welding fume.

The utility model discloses a smoke exhaust device for underground pipeline internal welding construction, which comprises an induced draft fan arranged on the ground of an inlet of a manhole door of an underground pipeline, a spiral hose is connected to an air inlet of the induced draft fan, and the free end of the spiral hose extends into the underground pipeline through the manhole door. A plurality of pull rings and a fixing assembly connected with the inner side wall of the underground pipeline are fixed to the free end of the spiral hose. During use, a maintainer entering the underground pipeline to be maintained through the manhole door brings the spiral hose into the underground pipeline to a position near a welding construction part by means of the pull ring, then the spiral hose is placed at the upper end of a working point by means of the fixing assembly, and negative pressure is formed around a port of the free end of the spiral hose after the induced draft fan is started. At the moment, welding operation is carried out, electric welding smoke generated during operation can be sucked into the spiral hose through negative pressure and finally is sent out of the underground pipeline through the induced draft fan, then safe operation is achieved, and meanwhile reliable safety measures and technical guarantee are provided for emergency repair and maintenance of underground pipeline water leakage accidents.

This invention discloses a specialized laser welding machine for leg tube connectors, comprising a frame on which are mounted a tooling and rotating assembly, a leg tube pressing assembly, a welding torch control assembly, and an ejection mechanism. The tooling and rotating assembly includes a hollow rotating platform, a servo motor, and tooling components. The leg tube pressing assembly includes a top plate, guide columns, a cylinder, a lifting plate, and an upper positioning block. The welding torch control assembly includes a servo motor, a ball screw assembly, a welding lifting plate, and an adjustable welding torch assembly with adjustable position, angle, and posture. This invention provides a specialized laser welding machine for leg tubes and leg tube connectors, enabling automated welding between the connectors and the leg tubes. Workers are kept away from the welding point, reducing laser radiation damage to the eyes and skin. Welding fumes and gases can be removed by a vacuum cleaner. This invention positions the upper and lower ends of the leg tubes to ensure product verticality and dimensional stability. The ejection mechanism easily removes the welded product from the positioning block.

The utility model provides a device for purifying and filtering welding fume, and relates to the technical field of welding construction environmental protection equipment, the device for purifying and filtering welding fume comprises a filtering device main body, the upper end of the filtering device main body is provided with a dust suction port; a first opening is formed in the first partition plate, and the first side containing cavity is communicated with the upper containing cavity through the first opening. According to the device for purifying and filtering the welding fume, provided by the utility model, after the welding fume sucked by the dust suction opening in the filtering device main body enters the first side accommodating cavity, the welding fume needs to flow downwards and then enters the air flow guide channel from the filtering holes in the first filtering partition plate; the welding fume flows upwards and enters the first side containing cavity from the first opening; the welding fume is in the first side containing cavity, large particles in the welding fume move downwards under the action of gravity and cannot enter the air flow guide channel, the welding fume needs to overcome the gravity in the air flow guide channel to flow upwards, and the large particles are further separated from the welding fume.

This utility model proposes a dust removal mechanism for turret-flying welding of cylindrical batteries, comprising: a housing, a first air duct, and a dust extraction window. The housing is movably disposed on one side of the turret-flying welding station, and the interior of the housing is hollow. Hollow windows are provided on both vertical sides of the housing to provide clearance for laser welding. The first air duct is located on the housing, and its outlet is parallel to the turret-flying welding station. The dust extraction window is located on the housing and is opposite to the first air duct. The first air duct blows horizontally, sending welding slag into the dust extraction window. This mechanism can be used in conjunction with turret-flying welding and can provide a greater flow rate and negative pressure effect, effectively removing welding slag and welding fumes, reducing the contamination of the battery by welding slag and fumes, improving the battery's cleanliness and electrical performance, thereby extending the battery's lifespan.

The logistics packaging box intelligent welding device comprises a supporting base, a rotating frame capable of rotating around a horizontal shaft is installed on the supporting base through a bearing, a chain conveying mechanism is arranged below the rotating frame, and turnover mechanisms are installed at the upper end and the lower end of the rotating frame correspondingly; the output end of the turnover mechanism is connected with a working frame, and a plurality of groups of clamping mechanisms are mounted on the working frame; welding protective covers are slidably mounted at the upper end and the lower end of the rotating frame correspondingly, and a driving mechanism is mounted on the side portion of the rotating frame and used for driving the two welding protective covers to move synchronously. According to the intelligent welding device for the logistics packaging box, the chain conveying mechanism, the jacking module, the clamping mechanism, the turnover mechanism, the suction assembly and other functional units are integrated, automatic material feeding, precise positioning, stable clamping and posture turnover to welding smoke treatment are completed, alternate continuous operation of an upper station and a lower station can be achieved, and the production efficiency is high.

This invention discloses a welding positioning device for the production of advertising display racks, including a base and a multi-functional clamp. A concave annular sliding frame is fixedly installed on the top of the base, and a positioning gear is fixedly sleeved on the outer side of the concave annular sliding frame. Two convex arc-shaped sliders are slidably installed on the inner side of the concave annular sliding frame. An arched concave ring frame is fixedly installed on the top of the two convex arc-shaped sliders, and an installation frame is fixedly installed on the outer side of the arched concave ring frame. When welding is performed, the exhaust fan is started, which causes the airflow in the bottom cylinder frame to flow downward. The airflow flows downward through the threaded hole, which guides the welding fumes downward, reducing the fumes from obstructing the view. The exhaust fan guides the airflow into the inner side of the granular filter paper disc, which intercepts the fumes, reducing spillage and ensuring the environment around the monitoring personnel, thereby indirectly maintaining the working environment and work efficiency.

The utility model discloses a smoke suction device of a soldering robot, and belongs to the technical field of soldering robots. The device mainly comprises a base; the tin soldering assembly is installed on the base, the tin soldering assembly is provided with a tin soldering machine arm for conducting tin soldering on the workpiece, the tin soldering machine arm is provided with a tin soldering gun and a second moving unit for driving the tin soldering machine arm to move, and the second moving unit is provided with a second sliding block; the smoke suction assembly is installed on the second sliding block, the smoke suction assembly is provided with an arc-shaped air suction box for sucking smoke, an inserting groove is formed in the arc-shaped air suction box, an arc-shaped mesh plate is movably inserted into the inserting groove, the arc-shaped mesh plate is provided with two sets of butt straps, and the butt straps are arranged in an arc shape. According to the smoke suction device of the tin soldering robot, the arc-shaped mesh plate is matched with the arc-shaped air suction box. When meshes of the mesh plate are blocked by viscous particles, the mesh plate is convenient to disassemble, clean or replace, airflow blocking and smoke suction efficiency reduction caused by hole blocking are avoided, and it is ensured that welding smoke is continuously and effectively collected.

The present disclosure relates to the technical field of welding, and provides a low-residue flux, and a preparation method therefor and a use thereof. The flux of the present disclosure comprises an active agent, a self-crosslinking emulsion and a solvent; the mass ratio of the self-crosslinking emulsion to the active agent is 0.3-2:100; the mass ratio of the solvent to the active agent is 0.8-2:1; and the self-crosslinking emulsion comprises a self-crosslinking acrylic emulsion and a self-crosslinking polyurethane emulsion. In the present disclosure, the self-crosslinking emulsion is added to the flux, thereby improving the coating adhesion and welding performance of the flux, and reducing welding fume and organic residues.

The application relates to the technical field of welding, in particular to a gantry type multi-axis welding robot which comprises a fixed chassis, a welding gun for welding is fixedly connected to the bottom of the fixed chassis, a mounting pipe is vertically fixedly connected to one side of the fixed chassis, a CCD camera is fixedly installed at the top of the mounting pipe, a microscope lens is rotatably installed at the bottom of the mounting pipe, and a protection pipe cover is fixedly connected to the bottom of the mounting pipe and arranged outside the microscope lens. The device takes a motor as a power source, so that the microscope lens and the pipe are simultaneously rotated, the pollution problems of two light transmission elements are solved by using centrifugal force generated by rotation, the reliability and durability of the system under a harsh welding environment are greatly improved, the flexibility of the gantry and the microscope lens are combined, and accurate tracking and welding of internal welds of a complex thin-wall structure are realized. The device is internally provided with a smoke exhaust mechanism for instant treatment of welding fume, tail gas pollution is reduced from the source, equipment is protected, and the working environment is improved.

The utility model discloses a welding waste gas recovery pipeline which comprises a plant ceiling, a plurality of supporting structures are fixedly connected to the lower surface of the plant ceiling, a recovery pipeline is installed on the supporting structures, and the recovery pipeline comprises a one-way connecting pipe, a two-way connecting pipe, a three-way connecting pipe, a suction hood, a transition pipe and a fan. The problems that in an existing welding technology, a large amount of waste gas can be generated in the welding process, the waste gas usually contains many harmful substances, the harmful substances can greatly damage the bodies of operators, and a large amount of waste gas is generated when a large number of workers conduct welding work at the same time in a factory are solved.

The application discloses a kind of for prestressed concrete pipe pile welding pile blocking wind equipment, including support framework, support rod piece and fireproof cotton wind shield, support framework includes left ring and right ring, left ring is connected with right ring by hollow bolt, and the other end of left ring and right ring is formed by hexagonal plum head bolt lock column One closed ring, the upper portion of the ring is provided with several threaded holes, support rod piece passes through the threaded hole of the ring, and the inner lower portion of the ring is provided with guide rail, and the guide rail is provided with several roller mechanisms, and the lower portion of the roller mechanism is connected to fireproof cotton wind shield.The present application is simple to assemble and disassemble, easy to move, the position of the fireproof cotton wind shield can be changed according to the wind direction, and the semi-closed welding construction space not only has the effect of wind blocking, but also can timely discharge welding fume and harmful gas to improve the working environment.In the coastal area where there is more wind, the efficiency of prestressed concrete pipe pile welding pile can be effectively improved, thereby reducing the construction period.

The dust falling device for metal product machining comprises a dust suction machine shell, the right side face of the dust suction machine shell is fixedly communicated with a universal pipe, the end, away from the dust suction machine shell, of the universal pipe is fixedly communicated with a dust suction cover, and the outer surface of the dust suction cover is fixedly connected with a holding rod; a top cover is movably hinged to the upper surface of the dust suction machine shell through a hinge, the left side face of the dust suction machine shell fixedly communicates with a negative pressure fan, a limiting frame is fixedly connected to the inner wall of the dust suction machine shell, a filtering assembly is placed on the upper surface of the limiting frame, and two limiting plates are arranged above the filtering assembly. According to the device, suction force is provided through the negative pressure draught fan arranged outside the dust suction machine shell, welding fume generated in the welding process of metal products is sucked into the dust suction machine shell, the filtering assembly is arranged in the dust suction machine shell, the welding fume is sequentially filtered through the metal wire net, the air filter element and the activated carbon net, and then particles in the welding fume can be filtered out; the processing and production environment is ensured.

The screen welding machine relates to the field of electric arc welding manufacturing. In order to solve the problem that the existing welding screen machine can remove the welding fume, but cannot remove the welding slag, which may affect the product quality, the present application comprises a feeding mechanism, a welding mechanism, a screen advancing mechanism, a protective cover and a suction mechanism. The feeding mechanism is used to release the weft metal wires. The welding mechanism can move up and down reciprocally and is used to weld the cross nodes formed by the warp metal wires and the weft metal wires. The screen advancing mechanism is used to drive the screen to move backward. The protective cover is connected with the welding mechanism, and the suction mechanism is communicated with the inner cavity of the protective cover. During the screen welding process, the feeding mechanism releases the weft metal wires onto the warp metal wires. The warp metal wires and the weft metal wires form the cross nodes. The protective cover moves downward with the welding mechanism. When the welding mechanism welds the metal wires, the protective cover is buckled on the cross nodes of the metal wires and blocks the overflow of the welding slag and the welding fume. The suction mechanism performs the suction action to remove the welding slag and the welding fume in the protective cover.

The present disclosure provides a low-residue flux and a preparation method and application thereof, and belongs to the technical field of welding. The flux comprises an active agent, a self-crosslinking emulsion and a solvent; the mass ratio of the self-crosslinking emulsion and the active agent is 0.3-2:100; the mass ratio of the solvent and the active agent is 0.8-2:1; and the self-crosslinking emulsion comprises a self-crosslinking acrylic emulsion and a self-crosslinking polyurethane emulsion. The present disclosure adds the self-crosslinking emulsion to the flux, improves the coating firmness and welding performance of the flux, and reduces the welding smoke amount and organic residue.

This utility model relates to a dust removal fixture for welding and pressing aluminum busbars in power batteries, belonging to the field of power battery manufacturing technology. The fixture includes a main body, which is a conical pressure head structure; an L-shaped connecting plate is fixedly installed on one side of the main body and on the other side; a dust collection hood is bolted to the upper surface of the L-shaped connecting plate; and a dust removal pipe is bolted to the side of the L-shaped connecting plate. This utility model uses a side-connected dust removal pipe and a top-connected dust collection hood, which is closer to the welding position than existing dust removal methods, effectively increasing the negative pressure for dust removal. Utilizing the rising characteristics of welding fumes, through the coordinated design of "top hood fume collection + side pipe extraction," the rising fumes are precisely collected by the dust collection hood and efficiently extracted by the side dust removal pipe without interference, completely preventing fumes from escaping and effectively reducing splashing and foreign matter.

The invention relates to a novel welding fume collecting device. The novel welding fume collecting device is reasonable in mechanical structure and high in practicability. The novel welding fume collecting device comprises a welding fume purifying device main machine, a fume collecting hood, a stand column, a horizontal arm, a box body and a front arm, the rear end of the horizontal arm is rotatably fixed to the stand column through a rotating piece, the rotating piece is driven by a first motor, the rear portion of the box body is hinged to the front end of the horizontal arm through a vertical shaft, and the front arm comprises an upper inclined rod, a lower inclined rod, a front base plate and a rear base plate. The components are hinged to form a parallelogram mechanism through horizontal short shafts, lugs are arranged at the lower end of the front portion of the box body and the middle of the upper inclined rod or the lower inclined rod respectively, an electric push rod is hinged between the two lugs through a horizontal short shaft, and the exhaust fume collecting hood is directly or indirectly fixed to the front base plate. The first motor, the second motor and the motor matched with the electric push rod are all provided with control modules. The novel welding fume collecting device is simple and reasonable in mechanical structure and has been popularized and applied to multiple coal mines to which the applicant belongs.

This utility model relates to the field of pipe cutting and welding technology, specifically an automatic flange pipe welding and cutting device, including a roller bracket for supporting the pipe fitting, with two sets of auxiliary rollers arranged symmetrically on the left and right sides of the roller bracket; a positioning mechanism including a lifting adjustment frame, on which a pressure roller is rotatably connected via a rotating shaft, the pressure roller being located on the upper side of the roller bracket and perpendicular to the pipe fitting axis; a driving mechanism including a first drive motor, which is mounted on the lifting adjustment frame and its output end is connected to the rotating shaft to drive the pressure roller to rotate; and an execution mechanism including a connecting seat mounted on the roller bracket for mounting a welding torch or cutting machine. This auxiliary platform enables circumferential operation without frequent manual movement of the welding torch or cutting machine, significantly improving labor efficiency; and it eliminates the need for close-range manual operation, keeping workers away from welding fumes or dangerous cutting areas, improving the working environment and protecting workers' health.