Environmentally friendly welding fume collection and treatment equipment

Abstract

The present invention discloses an environmentally friendly welding fume collection and treatment device, which relates to the technical field of welding fume collection, including a welding fume purifier, wherein an exhaust mechanism, two water tanks distributed up and down, an air intake mechanism and a water adding mechanism are installed on the front side of the welding fume purifier, the water tank is located between the exhaust mechanism and the air intake mechanism, and the water adding mechanism is located on the rear side of the air intake mechanism, and a slag discharge mechanism is installed inside the water tank; the welding fume is sucked by the welding fume purifier, and then the exhaust mechanism and the air intake mechanism are used to extract and collect the welding fume, during which the fume will alternately enter the two water tanks for air washing and filtration, and after the welding fume enters the water tank along with the air, it will first be cooled by water, and secondly, the water can also adsorb a part of the particulate matter and impurities in the fume, and then enter the welding fume purifier for final treatment, which can not only extend the service life of the welding fume purifier, but also reduce the loss rate of its internal filter element, thereby reducing cost expenditure.

Description

Technical Field

[0001] The present invention relates to the technical field of welding fume collection, and in particular to an environmentally friendly welding fume collection and processing device. Background Art

[0002] Welding fume is a mixed aerosol formed by the oxidation of metal vaporized by air under the action of high arc temperature (3000-6000℃). It contains metal oxide particles and harmful gases. Its main components are iron oxide, silicon dioxide and manganese oxide. Long-term inhalation can cause pneumoconiosis, chronic bronchitis, etc. Silicon dioxide can lead to silicosis, and because it contains substances such as manganese and hydrogen fluoride, it increases the risk of lung cancer and nasopharyngeal cancer. Therefore, during electric welding operations, it is usually necessary to collect and treat the welding fume;

[0003] There are many ways to collect and treat welding fume, such as local proximity collection, top suction collection, room-type / enclosed collection, blowing and suction collection, and mobile purification equipment. Mobile fume purification equipment also includes welding fume purifiers. This type of equipment is a device body plus a pipeline. The pipeline is covered in the welding work area, and then the fume is sucked into the interior of the device body through the pipeline for purification. First of all, welding fume has a high temperature. If the fume is directly sucked into the equipment, it is easy to damage the equipment and shorten its service life. Secondly, the filter element is indispensable for purification. High-intensity fume purification will accelerate the loss of the filter element, which will increase the cost loss.

[0004] In order to solve the above problems, the present application proposes an environmentally friendly welding fume collection and treatment device. Summary of the Invention

[0005] The present invention provides an environmentally friendly welding fume collection and treatment device to solve the above technical problems.

[0006] In order to solve the above technical problems, the present invention provides an environmentally friendly electric welding fume collection and treatment equipment, including a welding fume purifier, wherein an exhaust mechanism, two water tanks distributed up and down, an air intake mechanism and a water adding mechanism are installed on the front side of the welding fume purifier, the water tank is located between the exhaust mechanism and the air intake mechanism, and the water adding mechanism is located on the rear side of the air intake mechanism, and a slag discharge mechanism is installed inside the water tank.

[0007] Preferably, the exhaust mechanism includes a connecting air box, which is fixedly connected to the front side of the welding fume purifier by bolts, and an exhaust pipe is fixedly connected to the top of the connecting air box, and the end of the exhaust pipe is fixedly connected to the air inlet of the welding fume purifier. One side of the connecting air box is fixedly connected to two connecting pipes distributed up and down, and the end of the connecting pipe is fixedly connected to the top of the water tank, and the connecting pipes are respectively connected to the inside of the connecting air box and the inside of the water tank.

[0008] Preferably, an opening is provided at the bottom of the water tank, a ridge-shaped plate is fixedly connected to the middle of the opening, and the ridge-shaped plate divides the inside of the opening into two gaps. The slag discharge mechanism includes a collecting box, which is fixedly connected to the bottom of the water tank, and the opening is located above the collecting box. A sewage pipe is fixedly connected to the front side of the bottom of the collecting box, and a valve is installed on the sewage pipe.

[0009] Preferably, the slag discharge mechanism also includes an electric push rod, which is fixedly connected to the center of the top of the water tank. The end of the electric push rod piston rod is fixedly connected to a sealing frame, which is located inside the water tank and extends to the inside of the ridge-shaped plate.

[0010] Preferably, the blocking frame includes a connecting plate, which is fixedly connected to the end of the electric push rod piston rod, and two connecting rods are fixedly connected to the bottom of the connecting plate, and a blocking plate is fixedly connected to the bottom of the connecting rod. The blocking plate is adapted to be located inside the gap, and a sealing ring is embedded in the outer end of the blocking plate.

[0011] Preferably, the slag discharge mechanism also includes a motor, which is fixedly connected to the bottom of the water tank on the side away from the vacuum mechanism. The motor output shaft is fixedly connected to a rotating rod, which is located inside the water tank, and the motor end is movably connected to the inner wall of the water tank. The rotating rod passes through two connecting rods, and the outer end of the rotating rod is processed with two threads in opposite directions, and the outer end of the rotating rod is threadedly connected to two scrapers distributed on the left and right. The two scrapers are respectively located on both sides of the opening, and the bottom and side edges of the scrapers are respectively in contact with the bottom end and inner wall of the water tank.

[0012] Preferably, the air intake mechanism includes an air intake main pipe, which is located on a side of the water tank away from the exhaust mechanism. The top of the air intake main pipe is fixedly connected to a bellows via a flange, and the end of the bellows is fixedly connected to a collection cover. The outer end of the air intake main pipe is fixedly connected to two air intake branch pipes, which pass through the top of the water tank and extend to the inside of the water tank. A plurality of air intake holes are provided on the outer side wall of the air intake branch pipe, and the air intake holes are located inside the water tank. A solenoid valve 1 is installed on the air intake branch pipe, and the solenoid valve 1 is located above the water tank. The outer end of the air intake main pipe is sleeved with two fixing seats 1, and the air intake main pipe is fixedly connected to the front side of the welding fume purifier through the fixing seat 1.

[0013] Preferably, the water adding mechanism includes a water inlet main pipe, which is located on one side of the welding fume purifier. The front side of the water inlet main pipe is fixedly connected to two water inlet branches distributed upper and lower through a tee. The ends of the water inlet branches pass through the top of the water tank and extend into the inside of the water tank. A solenoid valve 2 is installed on the water inlet branch pipe. The outer end of the water inlet branch pipe is provided with two fixing seats 2, and the water inlet branch pipe is fixedly connected to the front side of the welding fume purifier through the fixing seat 2.

[0014] Preferably, a water level sensor is fixedly connected to one side of the interior of the welding fume purifier.

[0015] Compared with related technologies, the environmentally friendly welding fume collection and treatment equipment provided by the present invention has the following beneficial effects:

[0016] 1. The welding fume purifier is used for suction, and then cooperates with the exhaust mechanism and the air intake mechanism to extract and collect the welding fume. During this period, the fume will alternately enter the two water tanks for air washing and filtration. After the welding fume enters the water tank along with the air, it will first be cooled by the water. Secondly, the water can also absorb some of the particulate matter and impurities in the fume, and then enter the welding fume purifier for final treatment. This can not only extend the service life of the welding fume purifier, but also reduce the loss rate of its internal filter element, thereby reducing cost expenditure. The substance used for the initial treatment of welding fume is water, and no harmful substances will be produced during the process, which is more environmentally friendly.

[0017] 2. When the water tank is not in use, the slag discharge mechanism can collect and discharge the particulate impurities adsorbed in the water, so as to avoid too many water impurities in the water tank affecting the collection and treatment effect of welding fume. The natural cooling zone during the slag discharge, combined with the water adding mechanism to replenish water in the water tank, can reduce the water temperature in the water tank so that it does not affect the cooling function of welding fume during subsequent use. It is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a structural schematic diagram of the slag discharge mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal side structure of the water tank of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the occlusion frame of the present invention;

[0023] Figure 6 It is a schematic diagram of the local structure of the water tank of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the air intake mechanism of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the water adding mechanism of the present invention;.

[0026] Numbers in the figure: 1. Welding fume purifier, 2. Exhaust mechanism, 21. Connecting air box, 22. Exhaust pipe, 23. Connecting pipe, 3. Water tank, 31. Opening, 32. Ridge plate, 4. Slag discharge mechanism, 41. Electric push rod, 42. Sealing frame, 421. Connecting plate, 422. Connecting rod, 423. Sealing plate, 424. Sealing ring, 43. Motor, 44. Rotating rod, 45. Scraper, 46. Collecting box, 47. Drain pipe, 5. Air intake mechanism, 51. Air intake main pipe, 52. Bellows, 53. Collecting hood, 54. Air intake branch pipe, 55. Solenoid valve one, 56. Air intake hole, 57. Fixed seat one, 6. Water adding mechanism, 61. Water inlet main pipe, 62. Water inlet branch pipe, 63. Solenoid valve two, 64. Fixed seat two, 7. Water level sensor. DETAILED DESCRIPTION

[0027] Embodiment 1, by Figure 1-8 The present invention includes a welding fume purifier 1, and an exhaust mechanism 2, two water tanks 3 distributed up and down, an air intake mechanism 5 and a water adding mechanism 6 are installed on the front side of the welding fume purifier 1. The water tank 3 is located between the exhaust mechanism 2 and the air intake mechanism 5, and the water adding mechanism 6 is located on the rear side of the air intake mechanism 5. A slag discharge mechanism 4 is installed inside the water tank 3.

[0028] The exhaust mechanism 2 includes a connecting air box 21, which is fixedly connected to the front side of the welding fume purifier 1 by bolts. An exhaust pipe 22 is fixedly connected to the top of the connecting air box 21, and the end of the exhaust pipe 22 is fixedly connected to the air inlet of the welding fume purifier 1. One side of the connecting air box 21 is fixedly connected to two connecting pipes 23 distributed up and down, and the end of the connecting pipe 23 is fixedly connected to the top of the water tank 3, and the connecting pipes 23 are respectively connected to the inside of the connecting air box 21 and the inside of the water tank 3.

[0029] The air intake mechanism 5 includes an air intake main pipe 51, which is located on the side of the water tank 3 away from the air extraction mechanism 2. The top of the air intake main pipe 51 is fixedly connected to a bellows 52 through a flange, and the end of the bellows 52 is fixedly connected to a collection cover 53. The outer end of the air intake main pipe 51 is fixedly connected to two air intake branch pipes 54, which pass through the top of the water tank 3 and extend to the inside of the water tank 3. A plurality of air intake holes 56 are opened on the outer wall of the air intake branch pipe 54, and the air intake holes 56 are located inside the water tank 3. A solenoid valve 55 is installed on the air intake branch pipe 54, and the solenoid valve 55 is located above the water tank 3. The outer end of the air intake main pipe 51 is sleeved with two A fixing seat 57 is provided, and the air intake main pipe 51 is fixedly connected to the front side of the welding fume purifier 1 through the fixing seat 57. The collecting cover 53 can be used universally through the bellows 52, and the collecting cover 53 covers the working area during the welding operation, so as to directly suck away the welding smoke. The air inlet 56 on the air inlet branch pipe 54 is located on the lower surface of the air inlet branch pipe 54. Therefore, the air discharged from the air inlet 56 and the particulate impurities adsorbed by water in the air can only settle down to the bottom of the water tank 3, and will not pass through the air inlet 56 again to enter the interior of the air inlet branch pipe 54. Here, it refers to the time when the solenoid valve 55 on the corresponding air inlet branch pipe 54 is closed and the air inlet branch pipe 54 is temporarily not ventilated.

[0030] The exhaust mechanism 2 and the air intake mechanism 5 cooperate to form a passage between the exhaust mechanism 2, the air intake mechanism 5 and one of the water tanks 3 by opening a certain solenoid valve 55. The two water tanks 3 can be used alternately to cool the water in the water tank 3 and to discharge and clean the particulate impurities in the water in the water tank 3. The equipment does not need to be stopped throughout the process, and the welding smoke can be collected and processed continuously.

[0031] Example 2, on the basis of Example 1, the water tank 3 is provided with an opening 31 at the bottom, and a ridge-shaped plate 32 is fixedly connected to the middle of the opening 31. The ridge-shaped plate 32 divides the inside of the opening 31 into two gaps. The slag discharge mechanism 4 includes a collecting box 46, which is fixedly connected to the bottom of the water tank 3, and the opening 31 is located above the collecting box 46. A drain pipe 47 is fixedly connected to the front side of the bottom of the collecting box 46. A valve is installed on the drain pipe 47. The ridge of the ridge-shaped plate 32 is fixedly connected to the bottom of the water tank 3. The top is at the same height as the bottom wall of the water tank 3, so the ridge-shaped plate 32 will not interfere with the scraper 45 when the scraper 45 moves above the opening 31. In addition, due to the shape characteristics of the ridge-shaped plate 32, the particulate impurities that are scraped to the opening 31 by the scraper 45 but do not directly enter the gap, that is, the particulate impurities that fall on the ridge-shaped plate 32, can slide down along the ridge-shaped slope of the ridge-shaped plate 32, and eventually fall into the gap and enter the collection box 46. The collection box 46 is used to uniformly collect the particulate impurities in the water tank 3.

[0032] The slag discharge mechanism 4 also includes an electric push rod 41, which is fixedly connected to the center of the top of the water tank 3. The end of the piston rod of the electric push rod 41 is fixedly connected to a blocking frame 42. The blocking frame 42 is located inside the water tank 3 and extends to the inside of the ridge-shaped plate 32. The blocking frame 42 includes a connecting plate 421, which is fixedly connected to the end of the piston rod of the electric push rod 41. The bottom of the connecting plate 421 is fixedly connected to two connecting rods 422. The bottom of the connecting rod 422 is fixedly connected to the blocking plate 4 23. The blocking plate 423 is adapted to be located inside the gap. A sealing ring 424 is embedded in the outer end of the blocking plate 423. When the blocking plate 423 is adapted to block the inside of the gap, the sealing ring 424 is tightly attached to the inner wall of the gap, thereby improving the sealing performance of the blocking plate 423 on the gap, ensuring that when the sewage carrying particulate impurities in the collection box 46 is discharged, the water in the water tank 3 will not enter the collection box 46 and be discharged together, and when the electric push rod 41 drives the blocking frame 42 to move up and down, it will not interfere with the rotating rod 44.

[0033] The slag discharge mechanism 4 also includes a motor 43, which is fixedly connected to the bottom of the water tank 3 away from the air extraction mechanism 2. The output shaft of the motor 43 is fixedly connected to a rotating rod 44, which is located inside the water tank 3, and the end of the motor 43 is movably connected to the inner wall of the water tank 3. The rotating rod 44 runs through two connecting rods 422. The outer end of the rotating rod 44 is processed with two threads in opposite directions, and the outer end of the rotating rod 44 is threadedly connected to two scrapers 45 distributed on the left and right. The two scrapers 45 are respectively located on both sides of the opening 31, and the bottom and side of the scraper 45 are in contact with the bottom end and inner wall of the water tank 3 respectively. The threads on the rotating rod 44 are in opposite directions, and the two scrapers 45 are on the rotating rod 4 4 is symmetrically distributed, so when the motor 43 drives the rotating rod 44 to rotate, the two scrapers 45 move closer to or away from each other along the rotating rod 44 inside the water tank 3. When there is no operation, the two scrapers 45 are sufficiently far apart. At this time, the particulate impurities precipitated in the water tank 3 are all located between the two scrapers 45. When slag discharge and cleaning are required, the two scrapers 45 approach each other again and scrape the particulate impurities precipitated in the water tank 3 toward the opening 31. At this time, it is necessary to first drive the blocking frame 42 to move upward by the electric push rod 41 to avoid interference between the blocking plate 423 in the blocking frame 42 and the scraper 45, and to avoid the gap being blocked by the blocking plate 423 and the particulate impurities scraped by the scraper 45 from being able to be introduced into the collection box 46.

[0034] When the corresponding water tank 3 is suspended and needs to be cooled and slag discharged, the interior of the water tank 3 is connected to the interior of the collection box 46 through the opening 31. At this time, the scraper 45 can scrape the particulate impurities precipitated in the water tank 3 to the opening 31 and introduce them into the collection box 46 through the gap. When the particulate impurities collected in the collection box 46 need to be discharged, the electric push rod 41 is used to push the blocking frame 42 down and block it in the gap through the blocking plate 423. At this time, the interior of the water tank 3 is no longer connected to the collection box 46. Therefore, when the valve on the drain pipe 47 is opened to discharge the sewage carrying particulate impurities in the collection box 46 through the drain pipe 47, the water in the water tank 3 will not be discharged together.

[0035] The water adding mechanism 6 includes a water inlet main pipe 61, which is located on one side of the welding fume purifier 1. The front side of the water inlet main pipe 61 is fixedly connected to two water inlet branches 62 distributed up and down through a tee. The ends of the water inlet branches 62 pass through the top of the water tank 3 and extend into the inside of the water tank 3. A solenoid valve 2 63 is installed on the water inlet branch pipe 62. Two fixing seats 2 64 are provided on the outer end of the water inlet branch pipe 62. The water inlet branch pipe 62 is fixedly connected to the front side of the welding fume purifier 1 through the fixing seat 2 64. A water level sensor 7 is fixedly connected to one side of the inside of the welding fume purifier 1.

[0036] During the process of suspending the use of water tank 3 for sedimentation and slag discharge, the water in water tank 3 is in a natural cooling state. At the same time, as part of the water in water tank 3 is discharged, the water level in water tank 3 is detected by water level sensor 7, and the water level height range is set in advance. When the water level is insufficient, water is added to the designated water tank 3 through water adding mechanism 6, and water addition is automatically stopped after the water level reaches the requirement. The act of adding water also further reduces the water temperature in the raw water tank 3 and accelerates its cooling speed.

[0037] The above-mentioned electric push rod 41, motor 43, solenoid valve 1 55, solenoid valve 2 63 and water level sensor 7 are all controlled by a controller or computer terminal, and the control means, power supply and control methods are all existing conventional technologies, so they will not be described in detail here.

[0038] Working principle:

[0039] The welding fume purifier 1 is started, and the two water tanks 3 are evacuated to a negative pressure state through the exhaust mechanism 2, and then the welding fume is sucked into the water tank 3 under negative pressure through the air intake mechanism 5. Each time the welding fume is collected, only the solenoid valve 55 on one of the air inlet branches 54 is opened. After the welding fume is sucked into one of the water tanks 3 by the air intake mechanism 5, the dust particles in the fume float up in the water in the water tank 3 along with the air. During this period, some of the dust in the air will be absorbed and retained in the water. At the same time, the water in the water tank 3 will also cool the air containing the welding fume. The air that floats to the surface will then be sucked into the welding fume purifier 1 through the exhaust mechanism 2, and the welding fume will be fully collected and processed.

[0040] After a period of time, the water in one of the water tanks needs to be cooled and the particulate matter collected in the water also needs to be discharged and collected. At this time, the original solenoid valve 55 can be closed and the solenoid valve 55 on the other air inlet branch pipe 54 can be opened, so that the welding smoke sucked by the air intake mechanism 5 enters the other water tank 3 and continues to be processed according to the above process. For the water tank 3 that is not used temporarily, it is first allowed to stand for a certain period of time to allow the particulate matter in the water inside to fully settle, and then the corresponding electric push rod 41 is started. The electric push rod 41 drives the blocking frame 42 to move up until the blocking plate 423 in the blocking frame 42 no longer blocks the gap in the opening 31, and then the motor 43 is started. After the motor 43 is started The driving rod 44 is driven to rotate, so that the two scrapers 45 move closer to each other. The scrapers 45 can push the particles settled at the bottom of the water tank 3 to the opening 31, and finally enter the collection box 46 through the gap. The particles that fall on the ridge-shaped plate 32 will also slide along the slope of the top of the ridge-shaped plate 32. After the above operation is completed, the above steps are reversed, that is, the two scrapers 45 are separated again, and the blocking frame 42 moves down to block the gap through the blocking plate 423. At this time, the interior of the collection box 46 is isolated from the interior of the water tank 3. The valve on the sewage pipe 47 is opened to discharge the sewage containing particles in the collection box 46 through the sewage pipe 47. The two water tanks 3 are used alternately according to the above steps.

[0041] As the water in the water tank 3 is discharged again and again, when the water level sensor 7 detects that the water level in the water tank 3 is lower than the set minimum height, the solenoid valve 2 63 on the water inlet branch 62 corresponding to the water tank 3 in the water adding mechanism 6 is started, so that clean water can be added to the water tank 3. When the water level sensor 7 detects that the water level in the water tank 3 is higher than the set maximum position, the solenoid valve 2 63 is closed and no more water is added. This process not only ensures that the water level height inside the water tank 3 does not affect use, but also has the effect of lowering the water temperature inside the original water tank 3 after water is added.

Claims

1. An environmentally friendly welding fume collection and treatment device, comprising a welding fume purifier (1), characterized in that: The welding fume purifier (1) is provided with an exhaust mechanism (2), two water tanks (3) distributed vertically, an air intake mechanism (5), and a water supply mechanism (6) on the front side thereof, wherein the water tank (3) is located between the exhaust mechanism (2) and the air intake mechanism (5), and the water supply mechanism (6) is located on the rear side of the air intake mechanism (5), and a slag discharge mechanism (4) is provided inside the water tank (3); The exhaust mechanism (2) comprises a connecting air box (21), the connecting air box (21) is fixedly connected to the front side of the welding fume purifier (1) by means of bolts, an exhaust pipe (22) is fixedly connected to the top of the connecting air box (21), the end of the exhaust pipe (22) is fixedly connected to the air inlet of the welding fume purifier (1), two connecting pipes (23) distributed up and down are fixedly connected to one side of the connecting air box (21), the end of the connecting pipe (23) is fixedly connected to the top of the water tank (3), and the connecting pipe (23) is respectively connected to the inside of the connecting air box (21) and the inside of the water tank (3); The water tank (3) has an opening (31) at the bottom, a ridge-shaped plate (32) is fixedly connected to the middle of the opening (31), and the ridge-shaped plate (32) divides the inside of the opening (31) into two gaps. The slag discharge mechanism (4) includes a collecting box (46), the collecting box (46) is fixedly connected to the bottom of the water tank (3), and the opening (31) is located above the collecting box (46). A sewage pipe (47) is fixedly connected to the front side of the bottom of the collecting box (46), and a valve is installed on the sewage pipe (47); The slag discharge mechanism (4) further comprises an electric push rod (41), the electric push rod (41) being fixedly connected to the center of the top of the water tank (3), the piston rod end of the electric push rod (41) being fixedly connected to a blocking frame (42), the blocking frame (42) being located inside the water tank (3) and extending to the inside of the ridge-shaped plate (32); The air intake mechanism (5) comprises an air intake main pipe (51), the air intake main pipe (51) is located on a side of the water tank (3) away from the air extraction mechanism (2), the top of the air intake main pipe (51) is fixedly connected to a bellows (52) via a flange, the end of the bellows (52) is fixedly connected to a collecting cover (53), the outer end of the air intake main pipe (51) is fixedly connected to two air intake branches (54), the air intake branches (54) pass through the top of the water tank (3) and extend to the water tank (3) Inside, a plurality of air inlet holes (56) are provided on the outer wall of the air inlet branch pipe (54), the air inlet holes (56) are located inside the water tank (3), a solenoid valve (55) is installed on the air inlet branch pipe (54), the solenoid valve (55) is located above the water tank (3), the outer end of the air inlet main pipe (51) is provided with two fixing seats (57), and the air inlet main pipe (51) is fixedly connected to the front side of the welding fume purifier (1) through the fixing seat (57); The water adding mechanism (6) comprises a water inlet main pipe (61), the water inlet main pipe (61) is located on one side of the welding smoke purifier (1), the front side of the water inlet main pipe (61) is fixedly connected to two water inlet branches (62) distributed up and down through a tee, the ends of the water inlet branches (62) pass through the top of the water tank (3) and extend into the interior of the water tank (3), a second solenoid valve (63) is installed on the water inlet branch pipe (62), the outer end of the water inlet branch pipe (62) is provided with two second fixing seats (64), and the water inlet branch pipe (62) is fixedly connected to the front side of the welding smoke purifier (1) through the second fixing seat (64).

2. The environmentally friendly welding fume collection and treatment equipment according to claim 1, characterized in that: The blocking frame (42) includes a connecting plate (421), the connecting plate (421) is fixedly connected to the end of the piston rod of the electric push rod (41), the bottom of the connecting plate (421) is fixedly connected to two connecting rods (422), the bottom of the connecting rods (422) is fixedly connected to a blocking plate (423), the blocking plate (423) is adapted to be located inside the notch, and the outer end of the blocking plate (423) is inlaid with a sealing ring (424).

3. The environmentally friendly welding fume collection and treatment equipment according to claim 2, characterized in that: The slag discharge mechanism (4) further comprises a motor (43), wherein the motor (43) is fixedly connected to the bottom of the water tank (3) away from the air extraction mechanism (2), and the output shaft of the motor (43) is fixedly connected to a rotating rod (44), wherein the rotating rod (44) is located inside the water tank (3), and the end of the motor (43) is movably connected to the inner wall of the water tank (3), and the rotating rod (44) passes through two connecting rods (422), and the outer end of the rotating rod (44) is processed with two threads in opposite directions, and the outer end of the rotating rod (44) is threadedly connected to two scrapers (45) distributed on the left and right, and the two scrapers (45) are respectively located on both sides of the opening (31), and the bottom and side edges of the scrapers (45) are respectively in contact with the bottom end and the inner wall of the water tank (3).

4. The environmentally friendly welding fume collection and treatment equipment according to claim 1, characterized in that: A water level sensor (7) is fixedly connected to one side of the interior of the welding fume purifier (1).

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