CN220029144U

CN220029144U - Welding fume adsorption structure

Info

Publication number: CN220029144U
Application number: CN202321663610.0U
Authority: CN
Inventors: 伍平; 陶俊; 任健; 程诗博; 朱长科
Original assignee: CHONGQING SUNTOP IRON TOWER MANUFACTURE CO LTD
Current assignee: CHONGQING SUNTOP IRON TOWER MANUFACTURE CO LTD
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-11-17
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a welding fume adsorption structure, which comprises an adsorption cover, wherein the upper part of the adsorption cover is provided with an air suction interface for sealing and connecting a smoke dust conveying pipeline for negative pressure air suction; the method is characterized in that: the top of the adsorption cover is provided with a supporting frame which is integrally in a transverse frame shape, the top of the supporting frame is covered with a cover plate in a sealing way, and the cover plate is provided with the air suction interface; the side surface of the supporting frame is detachably and fixedly connected with a plurality of curtain cloth made of soft plastic along the frame edge of the supporting frame, and the curtain cloth falls on the frame edge of the supporting frame in a vertical projection manner; the two vertical edges of each curtain cloth are fixedly connected with magnetic attraction strips which are equal to the curtain cloth in height, and the edges of two adjacent curtain cloth are in magnetic attraction sealing connection through the magnetic attraction strips; the bottom of each curtain cloth is provided with a balancing weight. The utility model has the advantages that: safety and can promote and weld the cigarette and collect the suction effect.

Description

Welding fume adsorption structure

Technical Field

The utility model belongs to the field of welding fume adsorption, and particularly relates to a welding fume adsorption structure.

Background

During the welding process, a great amount of welding fume (welding fume for short) is generated, and at the same time, light radiation, light pollution and noise are also generated during the welding operation, so that the sanitation condition of the working environment of a welder is reduced to endanger the physical health of the welder, and the production efficiency of weldment manufacturing enterprises is reduced.

The patent of publication No. CN214261102U discloses "a central welding smoke cleaning system", which comprises a dust removal box, an installation table, an exhaust fan, a collecting cover plate and a total collecting pipe, wherein the bottom of the total collecting pipe is provided with a collecting branch pipe through an installation hole and the bottom of the collecting branch pipe is connected with the collecting cover plate, the top of the installation table is provided with the exhaust fan through an installation seat, one end of the installation table is provided with the dust removal box through an installation frame, and the air inlet end of the exhaust fan is connected with the air outlet port of the total collecting pipe through an air inlet pipe.

However, the above "a central fume cleaning system" still has the disadvantage that:

the collecting cover plate is of a rigid fixing structure, and the collecting cover plate cannot be lifted, so that the collecting cover plate is far away from a welding operation place below the collecting cover plate, and the effect of sucking and removing welding fume by gas collection can be reduced.

Based on this, the applicant considered to design a welding fume adsorption structure which is safe and can promote the effect of collecting and sucking welding fume.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: how to provide a safe welding fume adsorption structure capable of improving the effect of collecting and sucking welding fume.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the welding fume adsorption structure comprises an adsorption cover, wherein the upper part of the adsorption cover is provided with an air suction interface for sealing connection of a fume conveying pipeline for negative pressure air suction;

the method is characterized in that: the top of the adsorption cover is provided with a supporting frame which is integrally in a transverse frame shape, the top of the supporting frame is covered with a cover plate in a sealing way, and the cover plate is provided with the air suction interface;

the side surface of the supporting frame is detachably and fixedly connected with a plurality of curtain cloth made of soft plastic along the frame edge of the supporting frame, and the curtain cloth falls on the frame edge of the supporting frame in a vertical projection manner;

the two vertical edges of each curtain cloth are fixedly connected with magnetic attraction strips which are equal to the curtain cloth in height, and the edges of two adjacent curtain cloth are in magnetic attraction sealing connection through the magnetic attraction strips;

the bottom of each curtain cloth is provided with a balancing weight.

Compared with the prior art, the welding fume adsorption structure of the technical scheme has the advantages that:

1. the curtain cloth is made of soft plastic and has the advantages of no ventilation, easy processing and assembly

The height of the curtain cloth detachably and fixedly connected on the supporting frame is easy to cut to a proper size after being selected according to the operation site, and the lower end of the curtain cloth can be adjacent to a welding operation position, so that better welding smoke collecting and adsorbing effects are helped to be obtained.

2. When a welder performs welding operation, even if any part of a human body is carelessly bumped to the adsorption cover, the curtain cloth on the adsorption cover can deform along with the impact force, so that the damage to the collision position of the human body is reduced, and the effect of safely protecting the human body is achieved.

Drawings

FIG. 1 is a schematic diagram of a cartridge dust collector section of a welding fume collection system according to an embodiment

FIG. 2 is a plan view of a welding station in a welding fume collection and treatment system according to an embodiment

FIG. 3 is a schematic view of a welding station (connection hoses not shown) in a welding fume collection system according to an embodiment

FIG. 4 is a schematic view of a welding table in a welding fume collecting and treating system according to an embodiment

FIG. 5 is an enlarged view of the center CI of FIG. 4

FIG. 6 is an enlarged view of the middle CII of FIG. 4

FIG. 7 is a schematic view of a welding table in a welding fume collecting and treating system according to an embodiment

FIG. 8 is a schematic view of the structure of an air filter and its connector in a welding fume collecting and treating system according to the embodiment

FIG. 9 is a schematic view showing a structure of a drawer in a welding table in a welding fume collecting and processing system according to the embodiment

FIG. 10 is an enlarged view of a portion of FIG. 9

FIG. 11 is a schematic view of an adsorption cover in a welding fume collecting and treating system according to an embodiment

FIG. 12 is a schematic view showing the structure of the suction hood supporting mechanism in the welding fume collecting and treating system according to the embodiment

FIG. 13 is an enlarged view of the region indicated by the middle EI in FIG. 12

FIG. 14 is an enlarged view of the middle EII of FIG. 12

Marked in the figure as:

welding fume collecting and processing system:

a1 main pipe and A2 bypass branch pipe

A3 main suction pump and A4 auxiliary suction pump

A5 electric control on-off valve

A6 filter cartridge dust removal filter

A7 output chimney

A8 connecting hose

Z welding station

Welding station ring accuse device:

b1 enclosure

B2 electric torch

B3 PM2.5 dust sensor

B4 wall hanging electric fan

Welding station air purification equipment:

c1 welding table: c11 drawer (C110 blowing port, C111 sleeve pipe, C112 pulley), C12 slide rail, C13 sealing material, C14 limit stop, C15 micro switch, C16 metal mesh (C160 connecting frame)

C2 air filter: c21 filters filter media, automatically controlled exhaust fan of C22, C23 connector

Welding fume adsorption structure:

d1 adsorption cover: d11 supporting frame (stud for D110 connection), D12 curtain cloth (D120 magnetic suction strip), D13 connecting column (D130U-shaped connecting part), D14 balancing weight, D15 polyurethane and D16 suction interface

Adsorption cover supporting mechanism:

e1 square tube (E100 upper end plate, E101 lower end plate), E2 lifting table, E3 guide tube, E4 lifting gear motor, screw rod in E5 screw rod nut pair, and nut in E6 screw rod nut pair

E9 support cantilever

Reducing motor for E10 rotation, E11 driving gear and E12 fixed gear

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The specific implementation method comprises the following steps: as shown in fig. 1 to 14, the welding fume collecting and treating system comprises a fume adsorbing mechanism, a fume conveying pipeline, a cartridge dust removing filter and a suction pump, wherein the fume adsorbing mechanism, the fume conveying pipeline and the cartridge dust removing filter are sequentially arranged along the flow direction;

the suction pump comprises a main suction pump and a secondary suction pump,

the smoke dust conveying pipeline comprises a main pipe and a plurality of bypass branch pipes which are communicated with the main pipe in a sealing way;

the main suction pump is arranged on the main pipe; the bypass branch pipe is used for being arranged at a single welding station and is provided with the auxiliary suction pump and the electric control opening and closing valve.

The welding fume collecting and processing system has the advantages that:

1. each bypass branch pipe is provided with a secondary suction pump and an electric control on-off valve, so that each bypass branch pipe corresponding to each welding station can be independently controlled to be opened and closed and sucked.

Therefore, the welding fume adsorption of each welding station can be independently controlled, and the use efficiency of welding fume adsorption control of a single station is improved; meanwhile, after each bypass branch pipe can be independently controlled, negative pressure suction force of the main pipe can be helped and enabled to accurately act on a welding station of operation, and welding smoke sucking efficiency is improved.

2. Each bypass branch pipe is used for being matched with a single welding station to absorb smoke dust generated during welding of the station, so that welding smoke absorption pertinence is stronger, and absorption effect is better.

The main suction pump is a centrifugal fan, and the auxiliary suction pump is an axial flow fan.

Because the auxiliary suction pump is arranged at the welding operation station, the structure of the auxiliary suction pump can be more compact, the running noise and the power consumption are lower after the axial flow fan is adopted, the negative pressure suction effect of a 0 'smoke suction mechanism' for sucking welding smoke at the tail end can be better ensured, the positive pressure in the dry pipe is increased, and the suction power of the main suction pump arranged in the dry pipe is ensured.

Meanwhile, the main suction pump is a centrifugal fan, and the centrifugal fan has the advantages of high power and easy maintenance and overhaul because the matrix is mostly positioned outside the main pipe.

The main suction pump is integrally and fixedly arranged in the closed pump room, and the pump room is provided with a perforation for the smoke dust conveying pipeline to penetrate in or out.

In practice, it is preferable to fixedly install a sound insulation layer in the interior of the closed pump room, and the sound insulation layer is made of asbestos material. The sound insulation layer has better noise reduction, heat insulation and moisture prevention effects, and can make the operation of the main suction pump more silent and reliable.

Therefore, the sealed pump room can be better assembled outdoors at a place far away from the welding station, and after the sealed pump room is used for loading the main suction pump, the noise generated during the operation of the main suction pump can be better isolated and reduced, and the noise environment of the welding operation area can be better maintained.

The inlet of the main suction pump is communicated with the air flow outlet of the cartridge dust removal filter in a sealing way, and the outlet of the main suction pump is communicated with the output chimney;

the main suction pump and the filter cartridge dust removing filters are two sets which are matched one by one, and the input ports of the two sets of filter cartridge dust removing filters are respectively in sealing butt joint with the main pipe through pipelines; and the output ports of the two sets of main suction pumps are respectively connected with the pipeline and the output chimney.

The two sets of main suction pumps and the filter cartridge dust removal filter can have a better elastic working mode, namely: when more than 80% of welding stations are operated, two sets of main suction pumps can be started simultaneously to form an enhanced smoke sucking and welding mode; and when the welding station is operated below 50%, only one set of main suction pump is started to realize an environment-friendly and energy-saving welding smoke sucking mode.

In addition, the arrangement of the two sets of main suction pumps and the filter cartridge dust removing filter can also form a double redundant structure, so that shutdown caused by failure of one set of the filter cartridge dust removing filter is avoided, and the continuity and reliability of the whole operation are better ensured.

The welding fume collecting and processing system also comprises a welding station ring control device, wherein the welding station ring control device comprises an air component detection mechanism and a fume adsorption mechanism which are arranged at a welding station, and the air component detection mechanism is used for detecting the content of specific components in air at the welding station; the smoke adsorption mechanism is used for sucking welding smoke at the welding station;

the air component detection mechanism is a dust detection mechanism;

the dust blowing mechanism and the enclosure are arranged at the welding station, the enclosure is used for enclosing the operation area of the welding station, and a door structure which can be used for entering and exiting the operation area of the welding station is arranged on the enclosure; the dust blowing mechanism can blow air flow on the ground surface of a working area of the welding station and the welding table surface, and the air speed of the blown air flow is 2-10 meters per second.

The welding station ring control device of the technical scheme has the advantages that:

1. only a dust detection mechanism is used for detecting dust in the air of the welding station, and the detection is single and has high pertinence; and because the dust concentration is basically proportional to the concentration of other harmful substances generated during welding); the harmfulness of the air quality at the welding station can be comprehensively reflected by the concentration of the single component of the dust in the air (the dust concentration is proportional to the harmfulness of the air quality). And the technical scheme only adopts the dust detection mechanism, and compared with a gas detection sensor group adopting multiple components in the background technology, the gas detection sensor group has lower price and is easier to deploy, implement and popularize.

2. The technical scheme also comprises a dust blowing mechanism and a surrounding baffle which are arranged at the welding station, so that not only can the surrounding baffle be utilized to prevent welding smoke from floating and diffusing everywhere, but also the dust in the ground of the working area of the welding station and the dust in the welding station can be blown into the air by being matched with the dust blowing mechanism in a time period when a welder does not need to enter the operation; therefore, the welding fume sucking device can be matched with the fume sucking mechanism to operate to improve the sufficient degree of sucking the welding fume dust at the welding station, and the sucking treatment effect of the welding fume can be further improved.

The welding station environmental control device comprises an air component detection mechanism and a smoke adsorption mechanism which are arranged at a welding station, wherein the air component detection mechanism is used for detecting the content of a specific component in air at the welding station; the smoke adsorption mechanism is used for sucking welding smoke at the welding station;

the air component detection mechanism is a dust detection mechanism;

Compared with the prior art, the welding station ring control device of the technical scheme has the advantages that:

The dust detection mechanism comprises a visible dust detection mechanism and an invisible dust detection mechanism; the visible dust detection mechanism is a white openable and closable light source with 500-3500 lumens and can form a prominence for dust with the particle size of more than 10 mu m so as to be visible to the naked human eye;

the invisible dust detection mechanism comprises a controller, a PM2.5 dust sensor and an output prompter, wherein the PM2.5 dust sensor and the output prompter are arranged at each welding station; the PM2.5 dust sensor and the output prompter are respectively connected with the controller through signals, and the output prompter is an electric control audible and visual alarm or/and an electronic screen.

According to the technical scheme, the visible dust detection mechanism and the invisible dust detection mechanism are adopted at the same time, wherein the visible dust of human eyes is directly subjected to a high-brightness white light source, the visible dust in the air can be highlighted after the light source is started (light scattering phenomenon, stronger brightness contrast between the dust and the surrounding can be caused in a strong light irradiation area, and the human eyes are easier to see), so that a welder is prompted to start or regulate the dust adsorption mechanism to strengthen the suction; thereby better maintaining the air environment at the welding station.

In addition, invisible dust (dust below 10 μm) which is difficult to be seen by human eyes is easier to be inhaled into the body of a human body and endangers the health of the human body; the technical scheme adopts a structure that a controller is combined with a PM2.5 dust sensor and an output prompter, so that when the detected invisible dust concentration exceeds a threshold value, an out-of-standard signal is sent out through the output prompter, and a welder can know the air quality in time and make a processing decision.

In implementation, the color temperature of the openable light source is 5000-6500k.

In practice, the openable and closable light source is a movable light source (e.g., a flashlight) or an immovable light source (e.g., an upward LED lamp fixedly mounted on the surface of a soldering station or a downward LED lamp suspended and fixed by a bracket). The movable light source is preferably adopted, so that the movable light source can be used for irradiating identification dust, and the convenient illumination function can be utilized, so that the practicability is improved.

In practice, the PM2.5 dust sensor can be a model ZH 06-IV laser dust sensor (detection particle size range 0.3-10 μm, effective range 0-1000 μg/m) ³ ) Or model ZPH04 infrared sensor (detection particle size range 1 μm, effective range 0-1000 μg/m) ³ ). The ZH 06-IV laser dust sensor is preferable because of its higher detection accuracy and compact size (the external dimension is 47×37×12.2mm (L×W×H)).

When the controller is implemented, the controller can adopt a singlechip, an industrial personal computer or a display control integrated machine and the like.

The dust blowing mechanism comprises at least one wall-mounted electric fan fixed at the middle upper section of the height direction of the inner side surface of the enclosure.

Therefore, the flow of air flow can be quickened through the wall-mounted electric fan, the ground of the operation area of the welding station and the welding dust of the welding table surface can fly upwards, and the welding dust can be absorbed more fully by combining the dust absorbing mechanism, so that the operation area of the welding station is cleaned and maintained better.

The welding station environmental control device also comprises welding station air purification equipment, wherein the welding station air purification equipment comprises a welding table, an air filter fixedly installed in the lower side space of the welding table and an air blowing port which is arranged on the welding table and can blow air out from the upper side of the welding table;

the air filter is communicated with the outside air through a filter material with the filter material and is internally provided with a filter air cavity, an electric control exhaust fan is arranged at an output port of the filter air cavity, and the output port of the filter air cavity is communicated with the air blowing port through an air transmission channel.

The welding station air purification equipment has the advantages that:

1. the air filter is installed by utilizing the lower side of the welding table, and the welding table can be utilized to form a baffle plate for blocking welding smoke, so that the inhaled air of the air filter can be ensured to be relatively cleaner, the service life of consumable materials of the filter is prolonged, and the use cost is reduced.

2. The delivery outlet of the air filter is communicated with the air blowing opening capable of blowing air to the upper part of the welding table through the air transmission channel, so that the upward air blowing opening can accelerate the rising of welding fume, and further can be matched with the adsorption cover above the welding table to quickly and efficiently suck the welding fume, and the air quality at the welding station is better maintained.

3. Meanwhile, the air blowing port for blowing air above the welding table can also provide cleaner fresh air for a welder, ensure that the welder sucks cleaner air, and realize better welding working environment.

The welding fume collecting and treating method includes the following steps:

during welding operation, starting a dust detection mechanism to monitor dust concentration in air, and starting a dust adsorption mechanism to suck dust;

during non-welding operation, the dust blowing mechanism and the dust adsorbing mechanism are started to adsorb and remove dust.

By adopting the welding station environmental control device, the welding fume collecting and processing method can be realized, so that on-site fume is timely sucked and removed during welding operation, and the dust blowing mechanism and the fume adsorbing mechanism can be automatically started or manually started to fly dust during non-welding operation, so that the sufficiency of sucking and removing the dust is enhanced, station dust accumulation is better avoided, the cleaning workload is reduced, and the station cleaning timeliness is improved.

The welding station air purification equipment comprises a welding table, an air filter fixedly installed in the lower side space of the welding table and an air blowing port which is arranged on the welding table and can blow air out from the upper side of the welding table;

In practice, the air filter is fixedly arranged on the lower surface of the deck plate of the welding table through a suspension bracket.

The welding station air purification equipment has the advantages that:

The lower surface of the table top of the welding table is provided with a drawer, and the drawer is connected with a pair of support plates provided with sliding rails and fixedly arranged on the lower surface of the table top of the welding table in a sliding fit manner through pulleys arranged on two opposite outer plate surfaces in the length direction of the drawer;

sealing materials are sleeved at the upper ends of the two outer plate surfaces and the rear side plate, which are opposite to each other in the length direction of the drawer, and a circle of sealing materials can form sliding sealing connection with the welding table;

an air outlet hole is formed in the rear side vertical plate of the drawer, and the air outlet hole is connected with an output port of the air filter in a sealing way through a flexible pipe;

the drawer opening of the drawer forms the air blowing opening after the drawer is pulled out.

In practice, the sealing material is preferably any one of nylon, rubber and polyurethane materials.

After the technical scheme is adopted, not only can the necessary articles be put in during welding operation through the drawer, but also the storage function is achieved; the air blowing opening can be formed after the drawer is pulled out, and the size of the air blowing opening can be regulated and controlled by the size of the drawer opening after the drawer is pulled out;

when the opening of the drawer opening is smaller, the blowing flow speed is larger, the welding fume blowing and moving effect is better, and the welding fume blowing and moving device is suitable for the situation that the welding fume generating speed is faster;

when the opening of the drawer opening is larger, the blowing coverage surface is larger, the blowing flow rate is smaller, and the device is suitable for the conditions that the welding smoke and the welding smoke are slower in generating rate and larger in generating coverage surface.

In addition, the opening of the drawer after being pulled out is used as the air blowing opening, and even after welding fume or welding slag falls into the air blowing opening, the drawer is convenient to clean by pulling out, so that the practicability is higher.

At least two drawers which are arranged in parallel along the length direction of the welding table; the lower surface of the table top of the welding table is provided with limit stops, the limit stops are a plurality of limit stops which are arranged in one-to-one correspondence with the rear side of the upper end of the front plate of each drawer, each limit stop is provided with a blowing start-stop switch, and each blowing start-stop switch is any one of a micro switch, a forming switch or a touch switch;

the automatic air blowing device comprises a flexible pipe, a drawer, a valve controller, an electromagnetic valve, an air blowing start-stop switch and a blowing start-stop switch, wherein the flexible pipe is connected with the drawer in a sealing mode, the electromagnetic valve is arranged in each flexible pipe, the electromagnetic valve and the air blowing start-stop switch are respectively electrically connected with the valve controller, the air blowing start-stop switch is used for sending a trigger signal to enable the electromagnetic valve in the flexible pipe corresponding to the drawer to be opened after the drawer is opened, and the air blowing start-stop switch is used for triggering the valve controller to enable the electromagnetic valve to be closed after the drawer is closed.

After the structure is adopted, the position of the plurality of drawers can be used for adapting to the displacement of a welder during welding operation, so that the welder can operate along the length of the welding table and draw the drawers at the adjacent positions to obtain upward blowing fresh air, the position where the welder stands during operation can be ensured to obtain better air quality, and the health of the welder is better ensured.

The utility model discloses a filter, including filtering air cavity, the delivery outlet department of filtering air cavity can dismantle fixedly connected with a connector that wholly is cover type structure, the lower extreme of connector with the sealed butt joint of delivery outlet in filtering air cavity, set up on the circumference lateral wall of connector with the quantity one-to-one of drawer a plurality of outer convex connecting pipes, every the connecting pipe with the inside intercommunication of connector.

Therefore, the connector is independent of the air filter, so that the connector can be conveniently machined to be matched with flexible pipes of a plurality of drawers in a sealing and butt joint mode, and the structure is simplified to improve the connection efficiency.

When the air filter is implemented, the lower end of the connector can be in interference fit with the output port of the air filter to realize sealing and sleeving, and the hoop is adopted to realize tight sleeving connection.

The outside of the drawer rear side vertical plate is fixedly provided with a sleeve pipe which extends backwards and is used for sleeving the end part of the flexible pipe, and the sleeve pipe is in sealed centering connection with the air outlet hole of the drawer rear side vertical plate;

the front side of the drawer rear side vertical plate is also fixedly provided with a metal net covering the air outlet, the edge of the stainless steel net is connected with a connecting frame made of stainless steel materials in a wrapping mode, and the edge of the radial inner side of the connecting frame is in an inward convex sawtooth shape.

After the sleeve pipe is adopted, the end part of the flexible pipe can be sleeved conveniently and quickly, and the hoop can be adopted to realize the sealing connection between the end part of the flexible pipe and the sleeve pipe.

After the metal net is adopted, objects (such as mice, cockroaches or small parts) can be effectively prevented from entering the fresh air channel by mistake, and better protection effect is achieved.

Meanwhile, after the structure that the radial inner side edge of the connecting frame is in the inward convex zigzag shape is adopted, the zigzag inner side edge can be utilized to crush the flowing jet flow from the edge of the connecting frame and generate turbulent flow, so that the flow velocity of the jet flow blown out from the air outlet hole is reduced, and meanwhile, the vibration noise caused by higher flow velocity flow is reduced, thereby helping to reduce noise and improving silence.

the top of the adsorption cover is provided with a supporting frame which is integrally in a transverse frame shape, the top of the supporting frame is covered with a cover plate in a sealing way, and the cover plate is provided with the air suction interface;

the bottom of each curtain cloth is provided with a balancing weight.

The curtain cloth is made of PVC film materials.

Thus, the curtain cloth and the whole adsorption cover can be lighter in weight, the load of the supporting cantilever is reduced, the reliability of lasting hanging of the adsorption cover is better ensured, and the protection is better due to the harm to the human body when accidents occur (for example, the adsorption cover is not excessively damaged when the adsorption cover is accidentally dropped).

Meanwhile, the PVC film material has the advantages of easy cutting, difficult scratching and damage, and more reliable lasting use.

The outer side surface of the frame edge of the supporting frame is fixedly provided with a plurality of connecting studs along the length direction at intervals, the tops of the plurality of curtain fabrics are penetrated and provided with connecting holes corresponding to the plurality of connecting studs one by one, and the plurality of curtain fabrics are sleeved on the plurality of connecting studs through the connecting holes and are locked and connected through nuts;

the novel curtain cloth comprises a plurality of curtain cloth bodies, and is characterized by further comprising pressing blocks which are arranged between the outer sides of the top parts of the plurality of curtain cloth bodies and the nuts in a cushioning mode, wherein the pressing blocks are provided with through holes which are used for penetrating all the connecting studs and are aligned with the connecting holes one by one.

The assembly structure between the curtain cloth and the frame edge of the supporting frame has the advantages of convenience in assembly and disassembly and easiness in assembly and disassembly of the curtain cloth. Meanwhile, the top of the curtain cloth can be pressed through the cooperation of the pressing block, so that better reliability of connection and sealing is obtained, and the reliability of adsorption of the adsorption cover to welding smoke is better ensured.

A plurality of mounting holes are fixedly formed in the outer side face of the frame edge of the supporting frame at intervals along the length direction, connecting holes corresponding to the mounting holes one by one are formed in the tops of the plurality of curtain cloth in a penetrating mode, and bolts and nuts penetrate through the mounting holes and the corresponding connecting holes to realize locking connection;

the novel curtain cloth comprises a plurality of curtain cloth bodies, and is characterized by further comprising pressing blocks which are arranged between the outer sides of the top parts of the plurality of curtain cloth bodies and the nuts in a cushioning mode, wherein the pressing blocks are provided with through holes which are aligned with the connecting holes in a one-to-one mode.

Likewise, the adoption of the bolts and the nuts can also lead the curtain cloth to have the advantage of convenient disassembly and assembly.

The top of the supporting frame is fixedly provided with an upward convex connecting column, and the top of the upward convex connecting column is fixedly provided with a U-shaped connecting part; the inner side of the opening of the U-shaped connecting part is fixedly provided with a pair of rollers, or the opening of the U-shaped connecting part is provided with a pair of protruding parts which extend transversely inwards and are spaced apart, and the lower end surfaces of the protruding parts are fixedly connected with sliding blocks made of polyurethane.

After the structure of the connecting column and the U-shaped connecting part thereof is adopted, the sliding block or the roller wheel which is made of polyurethane can be sleeved on the supporting cantilever with the H-shaped section in a sliding way, so that the position of the adsorption cover can be adjusted along the transverse movement of the length direction of the supporting cantilever to better align with a welding smoke generating area, and the advantage of better welding smoke sucking function is obtained.

The adsorption cover supporting mechanism comprises a vertical lifting supporting structure, wherein the vertical lifting supporting structure is used for installing the adsorption cover and realizing vertical lifting adjustment;

the vertical lifting supporting structure comprises a vertical supporting rod, and a lifting table capable of lifting and positioning along the height of the supporting rod is arranged on the supporting rod;

the device also comprises a rotating structure, wherein the rotating structure comprises a plane thrust bearing, a vertical shaft and a supporting cantilever which transversely extends; the upper surface of the lifting platform is rotatably connected with the end part of a supporting cantilever through a plane thrust bearing and a vertical shaft, and the supporting cantilever is used for hoisting the adsorption cover.

Compared with the prior art, the adsorption cover supporting mechanism of the technical scheme has the advantages that:

not only can make the absorption cover vertical lift adjust, can also make through above-mentioned revolution mechanic support the cantilever and rotate round the vertical axis to realize rotating in circumferencial direction, and then make the hoist and mount absorption cover on supporting the cantilever also can the sideslip, thereby better satisfy the variability of welding operation position, can come the nimble position of adjusting absorption cover according to welding processing point, obtain better welding fume and inhale the effect, better ensure that the welder is in better operational environment.

The rotating structure further comprises a speed reducing motor for rotation, a driving gear and a fixed gear; the fixed gear and the vertical shaft are coaxial and fixed on the upper table surface of the lifting table; the outer side surface of the end part of the supporting cantilever is fixedly provided with a rotating speed reducing motor with a vertically downward rotating shaft, the rotating shaft of the rotating speed reducing motor is coaxially and fixedly provided with a driving gear, and the driving gear is meshed and connected with the fixed gear.

After adopting above-mentioned structure, can control through motor controller and rotate with gear motor corotation or reversal, can accomplish the absorption cover on the support cantilever and carry out sideslip location, it is more convenient to operate.

The support rod is a vertical square tube, an upper end plate and a lower end plate which are opposite to each other are fixedly arranged at the top of the square tube and the middle part of the square tube in the height direction, a guide tube is vertically and fixedly connected between the upper end plate and the lower end plate, and the cross section of the guide tube is rectangular;

the outer side of the guide pipe is sleeved with a sliding part with a vertical structure, the outer side of the upper end of the sliding part is fixedly connected with a transverse convex supporting flat plate through a reinforcing rib block, the sliding part and the supporting flat plate thereof jointly form the lifting platform, and the two opposite side surfaces of the structure of the sliding part are provided with guide pulleys rolling along the outer side surface of the guide pipe;

the vertical liftable supporting structure further comprises a screw-nut pair and a lifting gear motor, wherein the lifting gear motor is fixedly arranged on the lower end plate and is in driving connection with a screw rod in the screw-nut pair, and a nut in the screw-nut pair is fixedly arranged on the outer side surface of the sliding piece and is connected with the upper section of the screw rod through threads.

The square tube is used as a main supporting rod, so that the square tube has the advantages of structural strength and reliable support; and further after the upper end plate, the lower end plate and the guide pipe positioned between the upper end plate and the lower end plate are fixedly arranged on the square pipe, the structural strength and the reliability of the whole vertical lifting supporting structure can be further improved.

The sliding part sleeved outside the guide pipe has simple structure and high strength, and can be well connected outside the guide pipe in a sliding way; the coaxiality and the limiting structure of the screw-nut pair are further combined, so that the sliding piece can reliably lift and slide along the guide tube, meanwhile, the sliding piece can reliably slide along the guide tube, the stress (the stress in the radial direction is greatly offset) of the screw-nut pair can be further optimized, and the lasting reliability of up-and-down movement of the screw nut on the screw rod is improved.

The lower end plate is fixedly provided with a protective sleeve sleeved outside the screw rod. Therefore, the protection sleeve can prevent the human body from mistakenly touching the screw rod to cause injury, and a better protection effect is achieved.

The section of the supporting cantilever is of an I-shaped structure.

Therefore, the support cantilever has the advantages of lighter weight and higher structural strength, and ensures reliable support of the adsorption cover.

In addition, the structure of the supporting cantilever is easy to use by being matched with the connecting column and the U-shaped connecting part of the connecting column on the adsorption cover, so that the adsorption cover is easy to be sleeved on the supporting cantilever with the H-shaped section in a sliding manner, the position of the adsorption cover can be adjusted by transversely moving along the length direction of the supporting cantilever so as to better align with a welding smoke generation area, and the advantage of better welding smoke absorbing function is obtained.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements made by those skilled in the art without departing from the present technical solution shall be considered as falling within the scope of the claims.

Claims

1. The welding fume adsorption structure comprises an adsorption cover, wherein the upper part of the adsorption cover is provided with an air suction interface for sealing connection of a fume conveying pipeline for negative pressure air suction;

the bottom of each curtain cloth is provided with a balancing weight.

2. The welding fume adsorbing structure according to claim 1, wherein:

the curtain cloth is made of PVC film materials.

3. The welding fume adsorbing structure according to claim 1, wherein:

4. The welding fume adsorbing structure according to claim 1, wherein:

5. The welding fume adsorption structure according to any one of claims 1 to 4, wherein: