CN111974150A

CN111974150A - Welding fume purifier

Info

Publication number: CN111974150A
Application number: CN202010938655.9A
Authority: CN
Inventors: 刘文娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2020-11-24

Abstract

The utility model provides a welding gas purifier, includes control module, universal arm, the flue gas filter equipment of breathing in, the flue gas filter equipment includes casing, filter equipment and smoking fan, control module locates on the casing and connects the control smoking fan, the output of universal arm and the input intercommunication of filter equipment of breathing in are equipped with the arm that can drive universal arm of breathing in and be close to weldment on the casing, and on the arm was located to universal arm of breathing in, the universal arm of breathing in was equipped with the light sensor on inhaling the arm, and the light sensor is connected with control module, control module drives universal arm of breathing in with control arm according to the detection data of light sensor and is close to weldment and control smoking fan and open and close. The universal air suction arm can be automatically driven to be close to a welding workpiece through the combination of the light sensor and the mechanical arm, so that the universal air suction arm has the advantages of high automation degree, high purification efficiency and the like.

Description

Welding fume purifier

Technical Field

The invention relates to the field of environment-friendly equipment, in particular to a welding fume purifier.

Background

Welding is a common manufacturing mode in mechanical production, a large amount of welding smoke is generated in the welding process, the welding smoke contains a large amount of metal compounds and harmful gases, the environment is affected, and the health of welding workers exposed in the welding smoke for a long time is greatly damaged, so that the welding smoke needs to be effectively absorbed and then discharged, and the purpose of removing fine granular compounds in the smoke is achieved.

Although welding gas purifier has appeared in the market now, need the universal arm of inhaling of welder's manual regulation when using, it is comparatively troublesome to operate, is unfavorable for improving welding efficiency.

Summary of the invention

In order to overcome the defects of the prior art, the invention provides a welding fume purifier.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a welding fume purifier, includes control module, universal arm, the flue gas filter equipment of inhaling, the flue gas filter equipment includes the casing, locates filter mechanism and smoking fan in the casing, control module locates on the casing and connects the control smoking fan, the output of universal arm and the input intercommunication of filter mechanism of inhaling, its characterized in that: be equipped with on the casing and drive the universal arm of breathing in and be close to the arm of welding work piece, the universal arm of breathing in is located on the arm, be equipped with the light sensor who is used for detecting welding light on the universal arm of breathing in, the light sensor is connected with control module, control module drives the universal arm of breathing in and is close to the welding work piece and control smoking fan and open and close with control arm according to the detection data of light sensor.

In the invention, the universal air suction arm is also provided with a distance sensor capable of detecting the distance between the universal air suction arm and a welding workpiece, the distance sensor is connected with the control module, and the control module controls the mechanical arm to work according to detection data of the distance sensor.

In the invention, the mechanical arm comprises a telescopic rod mechanism for adjusting the air suction height of the universal air suction arm and an approach mechanism for driving the input end of the universal air suction arm to approach a welding workpiece, the approach mechanism is connected to the upper end of the telescopic rod mechanism, and the universal air suction arm is arranged on the telescopic rod mechanism and the approach mechanism.

The telescopic rod mechanism comprises a lower rod body fixed on the shell, an upper rod body sleeved on the lower rod body and capable of moving up and down, and a first electric push rod with two ends respectively connected with the lower rod body and the upper rod body, wherein the first electric push rod is connected and controlled by the control module.

The approach mechanism comprises a rear support arm hinged on the lower rod body, a front support arm hinged on the rear support arm, a second electric push rod driving the rear support arm to move on the lower rod body, and a third electric push rod driving the front support arm to move on the rear support arm, wherein two ends of the second electric push rod are respectively connected with the lower rod body and the rear support arm, two ends of the third electric push rod are respectively connected with the front support arm and the rear support arm, and the second electric push rod and the third electric push rod are respectively connected and controlled by a control module.

In the invention, the filtering mechanism comprises a flame arrester, a spraying assembly capable of spraying welding smoke and a filtering assembly capable of further filtering the welding smoke after more spraying, and the flame arrester, the spraying assembly, the filtering assembly and the smoke suction fan are sequentially arranged along the flow direction of the welding smoke.

The spraying assembly comprises a water tank, a first straight pipe, a connecting pipe, a second straight pipe, a water pump and a water conveying pipe, wherein the first straight pipe and the second straight pipe are arranged on the water tank, the bottom ends of the first straight pipe and the second straight pipe extend below the liquid level, the first straight pipe is communicated with the second straight pipe through the connecting pipe to form a U-shaped channel for flowing of smoke, the first straight pipe is communicated with an air inlet pipe close to the upper end of the first straight pipe, the top end of the first straight pipe is provided with a spraying head capable of spraying to the pipe cavity of the first straight pipe, the water pump is arranged in the water tank, and two ends of the water conveying pipe are respectively.

In the invention, the output end of the spraying assembly is provided with a demisting assembly.

In the invention, the filtering device is provided with a thermoelectric conversion module and an energy storage battery, and the thermoelectric conversion module and the energy storage battery are both connected with the control module.

In the invention, a cleaning mechanism capable of cleaning the filtering component is arranged in the shell.

The invention has the beneficial effects that: in the invention, the control module can automatically drive the universal air suction arm to be close to a welding workpiece through the combination of the light sensor and the mechanical arm, so that a welding worker does not need to manually adjust the universal air suction arm, the dust collection operation of the universal air suction arm is effectively simplified, and the welding efficiency of the welding worker is improved. And the invention is provided with three filtering structures of a flame arrester, a spraying component and a filtering component, can realize the aim of multiple filtering, effectively purifies dust particles and harmful substances of welding smoke, and reduces the pollution of the welding smoke to the environment or the harm to human bodies. In conclusion, the automatic gas purification device has the advantages of high automation degree, high purification efficiency and the like, can effectively filter and purify welding smoke while improving the working efficiency of welding workers, and is suitable for wide popularization.

Drawings

The invention is further illustrated by the following figures and embodiments:

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a schematic structural view of another angle in the present embodiment;

FIG. 3 is a schematic view of a robotic arm;

FIG. 4 is a schematic structural view of a spray assembly;

fig. 5 is a schematic structural diagram of the cleaning mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1-3, a welding fume purifier comprises a control module 1, a universal suction arm 2 and a fume filter device, wherein the fume filter device comprises a shell 3, a filter mechanism 4 and a fume suction fan 5, the filter mechanism 4 and the fume suction fan 5 are arranged in the shell 3, the control module 1 is arranged on the shell 3 and connected with the fume suction fan 5, and the output end of the universal suction arm 2 is communicated with the input end of the filter mechanism 4; be equipped with on the casing 3 and drive universal arm 6 that breathes in 2 and be close to the welding work piece of breathing in, universal arm 2 that breathes in locates on arm 6, be equipped with the light sensor 7 that is used for detecting welding light on the universal arm 2 that breathes in, light sensor 7 is connected with control module 1, control module 1 drives universal arm 2 that breathes in order to control arm 6 to be close to the welding work piece and control smoking fan 5 according to the detection data of light sensor 7 and opens and close.

Preferably, in the above structure, the control module 1 includes a control circuit, a controller connected to the control circuit, a control panel, and the like, the control module 1 is connected to all other electrical components in the present invention, and a time threshold for determining whether to completely stop welding is set in the controller of the control module 1, so that the control module 1 determines whether to turn off other electrical components. The mechanical arm 6 can only do fixed and invariable actions under the control of the control module 1, so that the mechanical arm 6 can only move the universal air suction arm 2 for a fixed distance, namely, a user can set a starting point A and an end point B of the action of the universal air suction arm 2 in advance by using the control module 1, then the mechanical arm 6 is controlled to only move the universal air suction arm 2 from the starting point A to the end point B, and the mechanical arm is reset after the processing is finished, and the operation is repeated in a circulating way; and in the state of moving at the fixed distance, the distance between the end point B and the welding workpiece is at least 0.5m, so that the interference between the mechanical arm 6 or the universal suction arm 2 and the welding workpiece is avoided. In this embodiment, the universal suction arm 2 is further provided with a distance sensor 8 capable of detecting a distance between the universal suction arm 2 and a welding workpiece, the distance sensor 8 is connected with the control module 1, and the control module 1 controls the mechanical arm 6 to work according to detection data of the distance sensor 8. Because the welding process is intermittent, a welder or automatic welding equipment cannot be always in a welding state; therefore, when the light sensor 7 of the control module 1 detects welding light for the first time, the control module 1 controls the mechanical arm 6 to move the universal air suction arm 2 at a fixed distance; when the welding is for the first time stopped, do not have welding light this moment promptly, so control module 1 can not utilize light sensor 7 to detect welding light to restart arm 6 makes universal arm 2 of breathing in be close to or keep away from the welding work piece, at this action in-process, control module 1 constantly utilizes distance sensor 8 cooperation arm 6 to revise the distance between universal arm 2 of breathing in and the welding work piece, thereby guarantees the best dust absorption effect of universal arm 2 of breathing in.

Preferably, as shown in fig. 3, the mechanical arm 6 includes a telescopic rod mechanism for adjusting the air suction height of the universal air suction arm 2, and an approach mechanism for driving the input end of the universal air suction arm 2 to approach the welding workpiece, the approach mechanism is connected to the upper end of the telescopic rod mechanism, and the universal air suction arm 2 is arranged on the telescopic rod mechanism and the approach mechanism. Further, telescopic link mechanism is including fixing the lower body of rod 21 on casing 3, the cover locate down the body of rod 21 on can reciprocate last body of rod 22, both ends respectively with the body of rod 21 and the electric putter one 23 of last body of rod 22 connection down, electric putter one 23 is by control module 1 connection control, and the body of rod 22 can be raised in electric putter's action to realize the purpose of 2 altitude mixture control of universal suction arm. Furthermore, the approaching mechanism comprises a rear support arm 24 hinged on the lower rod body 21, a front support arm 25 hinged on the rear support arm 24, a second electric push rod 26 driving the rear support arm 24 to move on the upper rod body 22, and a third electric push rod 27 driving the front support arm 25 to move on the rear support arm 24, wherein two ends of the second electric push rod 26 are respectively connected with the lower rod body 21 and the rear support arm 24 to drive the rear support arm 24 to swing up and down on the upper rod body 22, so that the purposes of adjusting the height of the universal air suction arm 2 and adjusting the distance from a welding workpiece can be achieved; two ends of the electric push rod III 27 are respectively connected with the front support arm 25 and the rear support arm 24, and the electric push rod II 26 and the electric push rod III 27 are connected and controlled by the control module 1; the second electric push rod 26 can achieve the purposes of adjusting the height of the universal air suction arm 2 and adjusting the distance from the welding workpiece.

Preferably, the filtering mechanism 4 comprises a flame arrester 41 fixed on the housing 3 and connected with the universal air suction arm 2, a spraying component 42 capable of spraying the welding smoke, and a filtering component 43 capable of further filtering the welding smoke after being sprayed, wherein the flame arrester 41, the spraying component 42, the filtering component 43 and the smoke suction fan 5 are sequentially arranged along the flow direction of the welding smoke.

Preferably, as shown in fig. 1 and 4, the spraying assembly 42 includes a water tank 421, a first straight pipe 422, a connecting pipe 423, a second straight pipe 424, a water pump 425, and a water pipe 426, the first straight pipe 422 and the second straight pipe 424 are both disposed on the water tank 421, bottom ends of the first straight pipe 422 and the second straight pipe 424 both extend below a liquid level, the first straight pipe 422 is communicated with the second straight pipe 424 through the connecting pipe 423 to form a U-shaped channel 401 for flowing of flue gas, the first straight pipe 422 is communicated with an air inlet pipe 429 near an upper end thereof, the air inlet pipe 429 extends out of the housing 3 and is connected with the flame arrester 41, and the water pump 425 is connected and controlled by the control module 1. The top end of the first straight pipe 422 is provided with a spray head 427 which can spray to the pipe cavity of the first straight pipe 422, the water pump 425 is arranged in the water tank 421, and two ends of the water pipe 426 are respectively connected with the water pump 425 and the spray head 427. In addition, the trough 421 is also provided with a trough cover 428 for respectively covering the upper ends thereof, and the first straight pipe 422 and the second straight pipe 424 are inserted and installed on the trough cover 428, so that when the trough cover 428 is covered on the trough 421, the first straight pipe 422 and the second straight pipe 424 are positioned and installed at the same time. And because the trough cover 428 is detachably connected with the water trough 421, the later maintenance and management of the water trough 421 are also facilitated.

Preferably, an overflow plate 402 is arranged in the water tank 421, the water tank 421 is divided into a sewage cavity 403 and a water storage cavity 404 by the overflow plate 402, the bottom ends of the first straight pipe 422 and the second straight pipe 424 are both inserted into the sewage cavity 403, and the water pump 425 is arranged in the water storage cavity 404. Under the structure, the spraying liquid in the first straight pipe 422 and the second straight pipe 424 can directly flow back into the sewage cavity 403, the spraying liquid precipitates particles in the sewage cavity 403, and then overflows from the top end of the overflow plate 402 into the water storage cavity 404 to be pumped by the water pump 425, so that the aim of recycling the spraying liquid is fulfilled. In addition, a filter screen 405 positioned at the top end of the overflow plate 402 is also arranged in the water tank 421, so that the filtering effect of the spraying liquid is further improved. And be equipped with level sensor 407 in the water storage chamber 404, level sensor 407 is connected with control module 1, and level sensor 407's sense terminal and water pump 425's input parallel and level to control module 1 utilizes level sensor 407 to detect the liquid level in the water storage chamber 404, with judge whether water pump 425 can effectively extract the spray liquid.

Preferably, the output end of the spraying assembly 42 is provided with a defogging assembly 44, and the defogging assembly 44 includes a mesh frame 441 arranged in the second straight pipe 424 and a defogging filler 442 filled in the mesh frame 441, so that moisture in the welding fume flows back into the sewage chamber 403 under the action of the defogging filler 442 after the sprayed welding fume passes through the defogging assembly 44.

Preferably, the filter assembly 43 comprises a high efficiency filter module 431, a first activated carbon filter module 432 and a second activated carbon filter module 433 which are arranged in sequence along the flow direction of the welding smoke, and the activated carbon density of the second activated carbon filter module 433 is lower than that of the first activated carbon filter module 432. Therefore, on the premise of ensuring effective purification of the welding smoke, the high-efficiency filter module 431, the first filter module, the second filter module and the third filter module which enable the welding smoke to pass through in sequence are ensured to filter by the smoking power provided by the smoking fan 5, and are discharged from the tail part of the shell 3.

Preferably, the interior of the housing 3 is divided into a first filtering chamber 32 and a second filtering chamber 33 by a partition plate 31, the spraying assembly 42 is disposed in the first filtering chamber 32, and a first movable door 34 for opening the first filtering chamber 32 is disposed on a side surface of the housing 3, so as to facilitate management of the spraying assembly 42. In addition, two cross braces 35 for preventing the water tank 421 from moving are horizontally arranged in the housing 3, and locking screws for fixing and locking the water tank 421 are arranged on the cross braces 35 and are directly connected with the side surface of the water tank 421. Through the structure, the damage of the spraying assembly 42 caused by the movement of the water tank 421 when the shell 3 moves can be avoided. Moreover, in this embodiment, the partition plate 31 is provided with a through opening provided with a connecting flange, the first filtering chamber 32 and the second filtering chamber 33 are communicated with each other through the through opening, the connecting flange is connected with a hose 36, the hose 36 is communicated with the top end of the second straight pipe 424, and therefore welding smoke passing through the spraying assembly 42 can enter the second filtering chamber 33.

Preferably, high efficiency filter module 431, first active carbon filter module 432, second active carbon filter module 433 are by preceding arranging in second filter chamber 33 after to in proper order, smoking fan 5 locates in second filter chamber 33 and is located the rear of second active carbon filter module 433, be equipped with the gas vent that corresponds smoking fan 5 on the casing 3 to make the welding flue gas can pass through flame arrester 41, spray assembly 42, three kinds of filtration of filter assembly 43 in proper order, carry out effectual purification, reach dischargeable standard. In this embodiment, the high efficiency filter module 431, the first activated carbon filter module 432, and the second activated carbon filter module 433 are detachably connected to the housing 3, and in addition, a second movable door 37 for opening the second filter chamber 33 is further disposed on a side surface of the housing 3, so as to facilitate the post-management of the filter assembly 43 by the user. Meanwhile, three sealing rubber gaskets which respectively correspond to the high-efficiency filter module 431, the first activated carbon filter module 432 and the second activated carbon filter module 433 are arranged on the inner side of the second movable door 37, and the sealing rubber gaskets are not shown in the figure; when the second movable door 37 is closed, the three sealing rubber gaskets press on the side surfaces of the high-efficiency filter module 431, the first activated carbon filter module 432 and the second activated carbon filter module 433.

Preferably, as shown in fig. 1-2, the flame arrester 41 is mainly used for extinguishing a small flame flow in welding fume, so that the flame arrester 41 has a high temperature, and therefore, in order to achieve the effects of energy conservation and emission reduction, the filtering device is provided with the thermoelectric conversion module 9 and the energy storage battery, and the thermoelectric conversion module 9 and the energy storage battery are both connected with the control module 1. In this embodiment, the periphery of spark arrester 41 is located to the hot spot conversion module, and thermoelectric conversion module 9 can be the heat conversion on spark arrester 41 electric energy and save on the energy storage battery under control module 1's control, and then can let control module 1 except external power supply, can also call thermoelectric conversion module 9 and save the electric energy on the energy storage battery, supply with other electrical components and use.

Preferably, as shown in fig. 1 and 5, a cleaning mechanism 10 for cleaning the filter assembly 43 is provided in the housing 3, so as to ensure that the filter assembly 43 can be used for a long time. Specifically, the cleaning mechanism 10 is disposed in the second filtering chamber 33, the cleaning mechanism 10 includes two rails 101, two moving seats 102, a cleaning brush assembly and a moving driving assembly, the two rails 101 are located in front of the high efficiency filter module 431 and are disposed in the second filtering chamber 33 in an opposite manner, the two moving seats 102 are respectively slidably connected to the two rails 101, the cleaning brush component comprises a cleaning brush 103, two mounting springs 104 respectively connected with two ends of the cleaning brush 103, and a vibration motor 105 arranged on the cleaning brush 103 and used for generating vibration of the cleaning brush 103, wherein the two mounting springs 104 are respectively fixedly connected with a connecting movable seat 102, the moving driving component comprises a driving motor 106 arranged on one of the moving bases 102, a rack 107 arranged beside one of the tracks 101, the driving motor 106 is provided with a gear meshed with the rack 107, and the vibration motor 105 and the driving motor 106 are both connected and controlled by the control module 1. In operation, control module 1 controls driving motor 106 and drives cleaning brush 103 and reciprocates to make cleaning brush 103 to the leading flank clearance of high efficiency filter module 431, in addition at actuating mechanism during operation, vibrating motor 105 starts simultaneously, consequently cleaning brush 103 can vibrate, with the clearance effect of strengthening cleaning brush 103, also avoid the smoke and dust to gather on cleaning brush 103 at cleaning brush 103 in addition.

The working process of the invention is as follows:

step 1, in a standby state of a welding smoke purifier, a control module 1 and a light sensor 7 are both in a starting state;

step 2, the light sensor 7 senses welding light, the control module 1 starts the mechanical arm 6, the smoking fan 5 and the water pump 425, at the moment, the mechanical arm 6 acts to drive the universal gas suction arm 2 to be close to a welding workpiece, the smoking fan 5 provides smoking power, the water pump 425 starts spraying and purifying work, at the moment, welding smoke can sequentially pass through three filtering structures, namely a flame arrester 41, a spraying component 42 and a filtering component 43, and effective purification is achieved;

and 3, when the light sensor 7 does not detect welding light within a time threshold, the control module 1 automatically controls the mechanical arm 6 to reset, then automatically closes the mechanical arm 6, the smoking fan 5, the distance sensor 8 and the water pump 425, and the welding smoke purifier returns to a standby state to wait for awakening.

In the step 1, the distance sensor 8 is also in a working state to be matched with the control module 1 to control the mechanical arm 6 to adjust the distance between the universal gas suction arm 2 and a welding workpiece; in step 2, the control module 1 simultaneously starts the thermoelectric conversion module 9, and the thermoelectric conversion module 9 converts the heat on the flame arrester 41 into electric energy to be stored in the energy storage battery; in addition, the control module 1 can detect whether the energy storage battery is fully charged or whether the electric quantity is insufficient; when the energy storage battery is fully charged, the control module 1 automatically calls the electric energy in the energy storage battery to distribute to each electric element of the invention; when the electric quantity of the energy storage battery is insufficient, the control module 1 automatically switches back to the external power supply for supplying power, so that the energy-saving effect is achieved.

In the present embodiment, since the distance sensor 8 is provided, there is a step 2-1 after the step 2, and the step 2-1: when the control module 1 fails to detect welding light by using the light sensor 7, the control module 1 starts the mechanical arm 6 to enable the universal gas absorption arm 2 to be close to or far away from a welding workpiece, and in the action process, the control module 1 continuously utilizes the distance sensor 8 to cooperate with the mechanical arm 6 to correct the distance between the universal gas absorption arm 2 and the welding workpiece.

In the present embodiment, since the liquid level sensor 407 is provided, there is a step 2-2 after the step 2, and the step 2-2: in the purification process, the control module 1 starts the liquid level sensor 407 to monitor and detect the liquid level in the water storage cavity 404 in real time, when the liquid level in the water storage cavity 404 is lower than the detection end of the liquid level sensor 407, the control module 1 judges that the water pump 425 cannot extract the spray liquid, and alarm information is displayed on the control panel of the control module 1.

In the present embodiment, since the cleaning mechanism 10 is provided, there is a step 3-1 after the step 3, and the step 3-1: when the time for keeping the welding fume purifier in the standby state is 0.5-1 hour, the control module 1 automatically starts the driving motor 106 and the vibration motor 105, and the working time of the driving motor 106 and the vibration motor 105 is 1-3 minutes; the electric work of drive can drive cleaning brush 103 and reciprocate the leading flank of brush high efficiency filter module 431, makes the dust attached to the leading flank of high efficiency filter module 431 drop to the bottom surface of second filter chamber 33 on, waits to the workman and concentrates the clearance, and vibrating motor 105 then drives cleaning brush 103 high-speed vibration, when improving cleaning brush 103 cleaning effect, avoids gathering the dust on cleaning brush 103.

The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by substantially the same means are within the protection scope of the present invention.

Claims

1. The utility model provides a welding gas purifier, includes control module (1), universal arm (2), the flue gas filter equipment of breathing in, the flue gas filter equipment includes casing (3), locates filter mechanism (4) and smoking fan (5) in casing (3), on casing (3) and connection control smoking fan (5) are located in control module (1), the output of universal arm (2) of breathing in communicates its characterized in that with the input of filter mechanism (4): be equipped with on casing (3) and drive universal arm (2) of breathing in and be close to arm (6) of welding work piece, universal arm (2) of breathing in are located on arm (6), be equipped with light sensor (7) that are used for detecting welding light on universal arm (2) of breathing in, light sensor (7) are connected with control module (1), control module (1) drives universal arm (2) of breathing in with control arm (6) according to the detection data of light sensor (7) and is close to welding work piece and control smoking fan (5) and open and close.

2. The welding fume purifier of claim 1, wherein: the universal gas absorption arm (2) is further provided with a distance sensor (8) capable of detecting the distance between the universal gas absorption arm (2) and a welding workpiece, the distance sensor (8) is connected with the control module (1), and the control module (1) controls the mechanical arm (6) to work according to detection data of the distance sensor (8).

3. The welding fume purifier of claim 1, wherein: arm (6) including being used for adjusting universal arm (2) of breathing in the telescopic link mechanism of height, drive the universal arm (2) of breathing in the input and be close welding workpiece's mechanism of being close, close the mechanism and connect on telescopic link mechanism's upper end, telescopic link mechanism, close on the mechanism are located to universal arm (2) of breathing in.

4. The welding fume purifier of claim 3, wherein: the telescopic rod mechanism comprises a lower rod body (21) fixed on the shell (3), an upper rod body (22) sleeved on the lower rod body (21) and capable of moving up and down, and an electric push rod I (23) with two ends respectively connected with the lower rod body (21) and the upper rod body (22), wherein the electric push rod I (23) is connected and controlled by the control module (1).

5. The welding fume purifier of claim 4, wherein: the approaching mechanism comprises a rear support arm (24) hinged to the lower rod body (21), a front support arm (25) hinged to the rear support arm (24), an electric push rod II (26) driving the rear support arm (24) to move on the lower rod body (21), and an electric push rod III (27) driving the front support arm (25) to move on the rear support arm (24), wherein two ends of the electric push rod II (26) are respectively connected with the lower rod body (21) and the rear support arm (24), two ends of the electric push rod III (27) are respectively connected with the front support arm (25) and the rear support arm (24), and the electric push rod II (26) and the electric push rod III (27) are controlled by the control module (1).

6. The welding fume purifier of claim 1, wherein: the filter mechanism (4) comprises a flame arrester (41), a spray assembly (42) capable of spraying the welding smoke, and a filter assembly (43) capable of further filtering the welding smoke after being sprayed, wherein the flame arrester (41), the spray assembly (42), the filter assembly (43) and the smoke suction fan (5) are sequentially arranged along the flow direction of the welding smoke.

7. The welding fume purifier of claim 6, wherein: spray assembly (42) include basin (421), first straight tube (422), connecting pipe (423), second straight tube (424), water pump (425), raceway (426), first straight tube (422) and second straight tube (424) all locate on basin (421) and both bottoms all extend to under the liquid level, first straight tube (422) pass through connecting pipe (423) and second straight tube (424) intercommunication and form U-shaped passageway (401) that supply the flue gas to flow, first straight tube (422) intercommunication has intake pipe (429) that is close to its upper end, the top of first straight tube (422) is equipped with shower head (427) that can spray to its lumen, water pump (425) are located in basin (421), the both ends of raceway (426) are connected with water pump (425) and shower head (427) respectively.

8. The welding fume purifier of claim 8, wherein: and the output end of the spraying assembly (42) is provided with a demisting assembly (44).

9. The welding fume purifier of claim 1 or 6, wherein: the filtering device is provided with a thermoelectric conversion module (9) and an energy storage battery, and the thermoelectric conversion module (9) and the energy storage battery are both connected with the control module (1).

10. The welding fume purifier of claim 6, wherein: a cleaning mechanism (10) capable of cleaning the filtering component (43) is arranged in the shell (3).