Steel plate production welding mechanism with waste gas cleaning structure

Abstract

The invention belongs to the technical field of steel plate welding mechanisms, and discloses a steel plate production welding mechanism with a waste gas cleaning structure, which comprises a mounting frame, a filtering device and a dust collecting device, the dust collecting device is hermetically communicated with the filtering device through a first hose, the dust collecting device comprises an upper integrated cavity and a lower integrated cavity, and the filtering device comprises a filtering box body; a filter cartridge is detachably mounted on the filter box body, a dust collector is arranged on the filter cartridge, and the filter cartridge is sequentially provided with a pre-cooling unit module, a back-blowing composite filter element and an activated carbon adsorption layer from bottom to top. According to the steel plate production welding mechanism with the waste gas cleaning structure, source collection of welding waste gas is achieved through the split type dust collecting device, the upper integrated cavity and the lower integrated cavity cooperate to form a multi-stage filtering system, the waste gas collecting efficiency is improved, the overall structure is compact and adapts to different welding angle working conditions, particles are preliminarily filtered through an annular filter screen, and the welding quality is improved. And meanwhile, the device is convenient to disassemble and clean, and the particles are stored.

Description

Technical Field

[0001] The present invention relates to the technical field of steel plate welding mechanisms, and specifically to a steel plate production welding mechanism with an exhaust gas cleaning structure. Background Technique

[0002] Welding is a manufacturing process and technology that joins metals or other thermoplastic materials by heating, high temperature or high pressure. Depending on the specific welding process, welding can be subdivided into gas welding, resistance welding, arc welding, induction welding, laser welding and other special weldings. Steel plates are widely used in our production and life. Steel plates can be used for special purposes such as machinery and construction. During the use of steel plates, it is necessary to weld and assemble multiple steel plates with smaller size specifications into large steel plates according to the required size specifications of the steel plates to meet the usage requirements.

[0003] However, in the existing steel plate production welding mechanism, welding exhaust gas is generated during the welding process. The traditional welding exhaust gas collection device has problems such as poor sealing resulting in dust leakage, difficulty in adapting the fixed filtration structure to the posture adjustment of the welding torch, inconvenient replacement of the filtration component, and the air delivery pipeline is prone to blockage, single-point suction is prone to generate air flow dead angles, the rigid flange connection affects the angle adaptability, and the cleaning and maintenance of the filter net requires overall disassembly, which affects the operation efficiency.

[0004] In view of the above problems, an innovative design is carried out on the basis of the original steel plate production welding mechanism with an exhaust gas cleaning structure. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel plate production welding mechanism with an exhaust gas cleaning structure, so as to solve the problems in the existing steel plate production welding mechanism mentioned in the above background technology, that is, welding exhaust gas is generated during the welding process, the traditional welding exhaust gas collection device has problems such as poor sealing resulting in dust leakage, difficulty in adapting the fixed filtration structure to the posture adjustment of the welding torch, inconvenient replacement of the filtration component, and the air delivery pipeline is prone to blockage, single-point suction is prone to generate air flow dead angles, the rigid flange connection affects the angle adaptability, and the cleaning and maintenance of the filter net requires overall disassembly, which affects the operation efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A steel plate production welding mechanism with an exhaust gas cleaning structure, including a mounting frame and a filtering device. A welding torch is detachably mounted on the mounting frame. A welding head is provided on the welding torch. A dust collection device is detachably sleeved on the welding torch. The dust collection device is hermetically communicated with the filtering device through a first hose. The dust collection device includes an upper integrated cavity and a lower integrated cavity. The upper integrated cavity is detachably sleeved on the welding torch. An upper limit frame is fixedly arranged on the inner wall of the upper integrated cavity. A third flange is fixedly arranged at the lower end of the upper integrated cavity. A first gas collecting pipe sealed and communicated with the first hose is fixedly arranged on the upper integrated cavity. A lower limit frame corresponding to the upper limit frame is fixedly arranged on the inner wall of the lower integrated cavity. A fourth flange corresponding to the third flange is arranged at the upper end of the lower integrated cavity. The third flange and the fourth flange are fixedly connected by fixing bolts. A filter ring frame is clamped between the lower limit frame and the upper limit frame. An annular filter screen is arranged on the filter ring frame. An air collecting hole is formed at the lower end of the lower integrated cavity. A second gas collecting pipe sealed and communicated with the air collecting hole is fixedly arranged on the inner wall. Air inlet holes are formed in the upper half of the second gas collecting pipe. The filtering device includes a filtering box body. A first annular frame is fixedly arranged on the inner wall of the filtering box body. A filtering cylinder body is detachably installed on the filtering box body. An annular sleeve is fixedly arranged on the filtering cylinder body. The filtering cylinder body and the filtering box body are fixedly connected by fixing bolts and sealed through the annular sleeve and the first annular frame. A third gas collecting pipe is arranged on the filtering box body. A gap is reserved between the filtering cylinder body and the filtering box body. The gap between the two is sealed and communicated with the first hose through the third gas collecting pipe. A dust collector is arranged on the filtering cylinder body. The dust collector is sealed and communicated with the filtering cylinder body through a negative pressure pipeline. A pre-cooling unit module, a reverse blowing composite filter element and an activated carbon adsorption layer are sequentially arranged on the filtering cylinder body from bottom to top.

[0007] With the above technical solution, the source collection of welding waste gas is realized through the split dust collection device, the dynamic sealing performance is enhanced, the annular filter screen increases the effective filtering area, the detachable design is convenient for maintenance and replacement, the upper and lower integrated cavities cooperate to form a multi-stage filtering system, the waste gas capture efficiency is improved, the overall structure is compact and suitable for different welding angle working conditions, the annular filter screen is used to preliminarily filter particles, prevent the gas transmission channel from being blocked, and at the same time, it is convenient to disassemble and clean, and the particles can be stored.

[0008] Preferably, a plurality of first screw holes evenly distributed in the circumferential direction are formed in the third flange. First through holes corresponding to the first screw holes are formed in the fourth flange. The fixing bolt includes a smooth end at the lower part and a threaded end at the upper end. The fixing bolt passes through the first through hole and is threadedly connected with the first screw hole.

[0009] Preferably, the air collecting holes and the second gas collecting pipes are evenly distributed in the circumferential direction on the lower integrated cavity. A gap is reserved between the air inlet holes and the bottom surface of the inner wall of the lower integrated cavity. A sealing end surface is arranged at the upper end of the second gas collecting pipe.

[0010] Preferably, a first flange is fixedly arranged on the outer wall of the welding torch. A first through hole is formed in the first flange. A second flange is fixedly arranged on the upper integrated cavity. A first screw hole is formed in the second flange. The first flange and the second flange are connected and fixed by a fixing bolt.

[0011] Preferably, a first conical groove is formed in the third flange, and a first conical cylinder corresponding to the first conical groove is arranged on the fourth flange.

[0012] Preferably, a top plate is fixedly arranged at the upper end of the annular sleeve. A fifth flange is fixedly arranged on the top plate and the filter box body. The two fifth flanges are connected and fixed by bolts and nuts. A second conical cylinder is formed in the annular sleeve. A second conical groove corresponding to the second conical cylinder is formed in the first annular frame of the filter box body. The vacuum cleaner is installed on the top plate by bolts and nuts, and the negative pressure pipeline fixedly penetrates through the top plate.

[0013] Preferably, the pre-cooling unit module includes an annular gas transmission cavity fixedly installed in the filter cylinder body. Honeycomb filter plates are fixedly arranged on the upper and lower end faces of the annular gas transmission cavity. A plurality of annular atomizing nozzles evenly distributed in the circumferential direction are fixedly formed in the inner ring of the annular gas transmission cavity. The spraying direction of the annular atomizing nozzles forms an angle of 30-45° with the tangential flow of the inlet gas. An air pipe is arranged at the upper end of the annular gas transmission cavity, and the air pipe fixedly penetrates through the top plate. The backflush composite filter element includes an annular bottom plate fixedly installed on the inner wall of the filter cylinder body. A PTFE film layer, a sintered metal fiber felt, and an in-situ regenerative catalytic layer are sequentially arranged on the annular bottom plate from the inside to the outside, and the upper ends of the three are in a sealed state. A gap is reserved between the in-situ regenerative catalytic layer and the inner wall of the filter cylinder body. A first backflush pipe for backflushing is arranged on the top plate.

[0014] In the process of using the above technical solution: a four-stage purification system of pre-cooling - composite filtration - catalytic oxidation - adsorption is adopted. Tangential atomization enhances the gas-liquid heat exchange efficiency. Microwaves activate the catalyst to improve the degradation activity and extend the regeneration cycle. The modular filter element structure reduces the maintenance cost. The conical seal and flange connection take into account both airtightness and convenient disassembly and assembly. The multi-stage coordination significantly improves the purification efficiency of complex waste gas.

[0015] Preferably, an annular support frame is slidably mounted on the mounting frame. An annular groove is formed in the annular support frame. An annular sliding frame is rotatably mounted on the annular support frame. An arc-shaped sliding frame rotatably mounted in the annular groove is fixedly arranged on the annular sliding frame. A first driving component for driving the annular support frame to move is arranged between the mounting frame and the annular support frame. A first transmission gear is fixedly arranged at the upper end of the annular sliding frame. A second driving component is detachably mounted on the annular sliding frame. A second transmission gear meshing with the first transmission gear is fixedly arranged on the power shaft of the second driving component. A support inclined plate is obliquely arranged on the annular sliding frame. A first dust collection cavity is fixedly arranged on the support inclined plate. An air collecting head is arranged on the first dust collection cavity. A second air collecting pipe is arranged on the first air collecting cavity. The second air collecting pipe is hermetically communicated with the first air collecting pipe through a second hose.

[0016] Preferably, a sliding frame is fixedly arranged on the annular sliding frame. A support sliding frame slidably mounted in the sliding frame is fixedly arranged on the support inclined plate. Mounting seats are fixedly arranged on the support sliding frame and the sliding frame respectively. A first screw rod is fixedly arranged on the two mounting seats. The thread directions of the two first screw rods are opposite and are connected through a double-threaded pipe. The double-threaded pipe is operated to adjust the distance between the two first screw rods.

[0017] In the process of using the above technical solution: a multi-stage adjustment mechanism of annular sliding and gear transmission is adopted to realize the precise positioning of the space of the dust collection head. The quadrilateral nested sliding structure improves the moving stability. The modular driving component reduces the maintenance difficulty. The dynamic tracking of the welding track effectively avoids the escape of waste gas. The adjustable dust collection cavity adapts to the requirements of different welding working conditions.

[0018] Preferably, it further includes a controller, a backflush pump body and a smoke detection sensor system. The controller adopts a PLC controller. Three backflush pipes are arranged on the exhaust pipe of the backflush pump body. One backflush pipe is hermetically communicated with the first backflush pipe. The other two backflush pipes are respectively hermetically communicated with the first hose and the second hose. Electromagnetic valves are respectively arranged on the three backflush pipes, the first hose and the second hose. The electromagnetic valves, the vacuum cleaner, the first driving component, the second driving component, the backflush pump body and the smoke detection sensor system are all electrically connected to the controller. The smoke detection sensor system includes a plurality of smoke detection sensors evenly distributed circumferentially on the welding mechanism. The signals detected by the plurality of circumferentially evenly distributed smoke detection sensors are transmitted to the controller, and the controller controls the second driving component to work to adjust the position of the air collecting head.

[0019] With the above technical solutions, closed-loop feedback control realizes dynamic optimization of the waste gas collection path, the multi-directional backflush system synchronously cleans the filter element and pipeline, the solenoid valve timing control reduces air flow interference, the smoke detection sensor array improves the response accuracy, the PLC controller integrates control to reduce the intensity of manual intervention, and the modular design enhances the equipment adaptability, effectively extending the service life of the filter element and reducing energy consumption.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The source collection of welding waste gas is realized through the split dust collection device, enhancing the dynamic sealing performance. The annular filter screen increases the effective filtration area, and the detachable design facilitates maintenance and replacement. The upper and lower integrated cavities cooperate to form a multi-stage filtration system, improving the waste gas capture efficiency. The overall structure is compact and adaptable to different welding angle working conditions. The annular filter screen preliminarily filters particles, preventing blockage of the gas transmission channel, and at the same time facilitating disassembly and cleaning, and realizing the storage of particles. 2. A four-stage purification system of pre-cooling - composite filtration - catalytic oxidation - adsorption is adopted. Tangential atomization enhances the gas-liquid heat exchange efficiency. Microwave activation of the catalyst improves the degradation activity and extends the regeneration cycle. The modular filter element structure reduces the maintenance cost. The conical seal and flange connection take into account both airtightness and convenient disassembly and assembly. The multi-stage cooperation significantly improves the purification efficiency of complex waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a partial perspective view of the present invention; Figure 2 is a partial top view structural schematic diagram of the present invention; Figure 3 is of the present invention Figure 2 the sectional view at A-A in; Figure 4 is a partial perspective view of the present invention; Figure 5 is a partial exploded structural schematic diagram of the present invention; Figure 6 is a partial exploded view of the present invention; Figure 7 is a perspective view of the dust collection device of the present invention; Figure 8 is a sectional view of the dust collection device of the present invention; Figure 9 is an exploded view of the dust collection device of the present invention; Figure 10 is an exploded view of the dust collection device of the present invention; Figure 11 is a perspective view of the filter device of the present invention; Figure 12 is an exploded view of the filter device of the present invention; Figure 13Explosion diagram of the filtering device of the present invention; Figure 14 Explosion diagram of the filtering device of the present invention; Figure 15 Structural schematic diagram of the third embodiment of the present invention; In the figure: 1, mounting frame; 2, welding torch; 3, welding head; 4, first flange; 5, first through hole; 6, second flange; 7, first screw hole; 8, upper integrated cavity; 9, upper limit frame; 10, third flange; 11, first tapered groove; 12, first gas collecting pipe; 13, filtering annular frame; 14, annular filter net; 15, fixing bolt; 16, fourth flange; 17, lower integrated cavity; 18, lower limit frame; 19, first tapered cylinder; 20, air collecting hole; 21, second gas collecting pipe; 22, air inlet hole; 23, annular support frame; 24, annular groove; 25, first driving component; 26, annular sliding frame; 27, arc sliding frame; 28, first transmission gear; 29, second transmission gear; 30, second driving component; 31, sliding frame; 32, support sliding frame; 33, mounting seat; 34, double-threaded pipe; 35, first screw rod; 36, support inclined plate; 37, first dust collecting cavity; 38, gas collecting head; 39, second gas collecting pipe; 40, filtering box body; 41, third gas collecting pipe; 42, first annular frame; 43, second tapered groove; 44, top plate; 45, fifth flange; 46, vacuum cleaner; 47, negative pressure pipeline; 48, annular sleeve; 49, second tapered cylinder; 50, filtering cylinder body; 51, activated carbon adsorption layer; 52, backflush composite filter element; 5201, annular bottom plate; 5202, PTFE film layer; 5203, metal fiber sintered felt; 5204, in-situ regeneration type catalytic layer; 53, pre-cooling unit module; 5301, annular gas transmission cavity; 5302, honeycomb filter plate; 5303, gas transmission pipe; 5304, annular atomizing nozzle; 54, backflush pump body; 55, backflush pipe; 56, first hose; 57, second hose; 58, smoke detection sensor system; 59, controller; 60, control valve; Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 - 15, the present invention provides a technical solution: a steel plate production welding mechanism with an exhaust gas cleaning structure, including a mounting frame 1 and a filtering device. A welding gun 2 is detachably mounted on the mounting frame 1. A welding head 3 is provided on the welding gun 2. A dust collection device is detachably sleeved on the welding gun 2. The dust collection device and the filtering device are hermetically connected through a first hose 56. The dust collection device includes an upper integrated cavity 8 and a lower integrated cavity 17. The upper integrated cavity 8 is detachably sleeved on the welding gun 2. An upper limit frame 9 is fixedly arranged on the inner wall of the upper integrated cavity 8. A third flange 10 is fixedly arranged at the lower end of the upper integrated cavity 8. A first gas collecting pipe 12 hermetically connected to the first hose 56 is fixedly arranged on the upper integrated cavity 8. A lower limit frame 18 corresponding to the upper limit frame 9 is fixedly arranged on the inner wall of the lower integrated cavity 17. A fourth flange 16 corresponding to the third flange 10 is arranged at the upper end of the lower integrated cavity 17. The third flange 10 and the fourth flange 16 are connected and fixed by fixing bolts 15. A filtering ring frame 13 is clamped between the lower limit frame 18 and the upper limit frame 9. An annular filter net 14 is arranged on the filtering ring frame 13. An air collecting hole 20 is opened at the lower end of the lower integrated cavity 17. A second gas collecting pipe 39 hermetically connected to the air collecting hole 20 is fixedly arranged on the inner wall. An air inlet hole 22 is opened in the upper half of the second gas collecting pipe 39. A plurality of first screw holes 7 evenly distributed in the circumferential direction are opened on the third flange 10. A first through hole 5 corresponding to the first screw hole 7 is opened on the fourth flange 16. The fixing bolt 15 includes a smooth end at the lower part and a threaded end at the upper part. The fixing bolt 15 passes through the first through hole 5 and is threadedly connected to the first screw hole 7. The air collecting hole 20 and the second gas collecting pipe 39 are evenly distributed in the circumferential direction on the lower integrated cavity 17. A gap is reserved between the air inlet hole 22 and the bottom surface of the inner wall of the lower integrated cavity 17. A sealing end surface is arranged at the upper end of the second gas collecting pipe 39. A first flange 4 is fixedly arranged on the outer wall of the welding gun 2. A first through hole 5 is opened on the first flange 4. A second flange 6 is fixedly arranged on the upper integrated cavity 8. A first screw hole 7 is opened on the second flange 6. The first flange 4 and the second flange 6 are connected and fixed by the fixing bolt 15. A first conical groove 11 is opened on the third flange 10. A first conical cylinder 19 corresponding to the first conical groove 11 is arranged on the fourth flange 16.

[0024] In actual operation: The welding exhaust gas generated by the welding torch 2 is preliminarily filtered by a dust collection device. The dust collection device is divided into upper and lower integrated cavities 17. The upper integrated cavity 8 is connected to the filtering device through the first gas collecting pipe 12 and the first hose 56 to form a main suction channel. The lower integrated cavity 17 collects the exhaust gas at the welding head 3 through the air inlet hole 22 of the second gas collecting pipe 39. When the welding torch 2 is operating, the exhaust gas is roughly filtered through the radial filter layer of the annular filter net 14 under the action of negative pressure. Large particles are intercepted at the bottom of the lower integrated cavity 17. The upper and lower integrated cavities 17 adopt the nested cooperation of the first tapered groove 11 and the first tapered cylinder 19 to form a dynamic sealing structure to ensure airtightness when the welding angle changes. The filtered gas enters the rear-end filtering device through the first hose 56 for deep purification. The threaded end of the fixing bolt 15 maintains the connection stability to achieve the sealing maintenance of the dust collection device when the posture of the welding torch 2 is adjusted.

[0025] The filtering device includes a filtering box body 40. A first annular frame 42 is fixedly arranged on the inner wall of the filtering box body 40. A filtering cylinder body 50 is detachably installed on the filtering box body 40. An annular sleeve 48 is fixedly arranged on the filtering cylinder body 50. The filtering cylinder body 50 is connected and fixed to the filtering box body 40 through the fixing bolt 15, and is sealed through the annular sleeve 48 and the first annular frame 42. A third gas collecting pipe 41 is arranged on the filtering box body 40. A gap is reserved between the filtering cylinder body 50 and the filtering box body 40, and the gap between the two is hermetically communicated with the first hose 56 through the third gas collecting pipe 41. A dust collector 46 is arranged on the filtering cylinder body 50. The dust collector 46 is hermetically communicated with the filtering cylinder body 50 through a negative pressure pipeline 47. The filtering cylinder body 50 is sequentially provided with a pre-cooling unit module 53, a back-blowing composite filter element 52 and an activated carbon adsorption layer 51 from bottom to top.

[0026] A top plate 44 is fixedly arranged at the upper end of the annular sleeve 48. Fifth flanges 45 are fixedly arranged on the top plate 44 and the filter box body 40. The two fifth flanges 45 are fixedly connected by bolts and nuts. A second conical cylinder 49 is formed on the annular sleeve 48. A second conical groove 43 corresponding to the second conical cylinder 49 is formed on the first annular frame 42 of the filter box body 40. The dust collector 46 is installed on the top plate 44 by bolts and nuts, and the negative pressure pipeline 47 fixedly penetrates through the top plate 44. The pre-cooling unit module 53 includes an annular gas transmission cavity 5301 fixedly installed in the filter cylinder body 50. Honeycomb filter plates 5302 are fixedly arranged on the upper and lower end faces of the annular gas transmission cavity 5301. A plurality of annular atomizing nozzles 5304 evenly distributed in the circumferential direction are fixedly formed on the inner ring of the annular gas transmission cavity 5301. The spraying direction of the annular atomizing nozzles 5304 forms an angle of 30-45° with the tangential flow of the intake air. An air transmission pipe 5303 is arranged at the upper end of the annular gas transmission cavity 5301, and the air transmission pipe 5303 fixedly penetrates through the top plate 44. The backwashing composite filter element 52 includes an annular bottom plate 5201 fixedly installed on the inner wall of the filter cylinder body 50. A PTFE coating layer 5202, a metal fiber sintered felt 5203, and an in-situ regeneration catalytic layer 5204 are sequentially arranged on the annular bottom plate 5201 from the inside to the outside, and the upper ends of the three are in a sealed state. A gap is reserved between the in-situ regeneration catalytic layer 5204 and the inner wall of the filter cylinder body 50. A first backwashing pipe 55 for backwashing is arranged on the top plate 44.

[0027] Specifically: The in-situ regeneration catalytic layer 5204 is a ceramic honeycomb body, and the surface is loaded with an Mn-Ce-Co-O catalyst with a molar ratio of Mn:Ce:Co = 5:3:2, a specific surface area ≥ 150 m² / g, and microwave radiators are arranged at both ends of the module, with a working frequency of 2.45 GHz ± 50 MHz.

[0028] In actual operation: Deep purification of waste gas is achieved through multi-stage collaborative treatment. After the welding waste gas enters the gap between the filter box body 40 and the filter cylinder body 50 through the first hose 56, it is first cooled by the pre-cooling unit module 53. The annular atomizing nozzles 5304 spray the cooling medium at a tangential angle of 30-45°, forming a swirling heat exchange with the high-temperature waste gas. The honeycomb filter plates 5302 intercept liquid particles. Subsequently, the waste gas radially penetrates the backwashing composite filter element 52, and the PTFE coating layer 5202 intercepts fine dust, the metal fiber sintered felt 5203 adsorbs metal soot, and the in-situ regeneration catalytic layer 5204 activates the Mn-Ce-Co-O catalyst under the action of the microwave radiator to catalytically oxidize harmful gases. The purified air flow continues to rise to the activated carbon adsorption layer 51 to remove residual odors. During backwashing, the reverse air flow of the first backwashing pipe 55 removes the dust accumulated on the filter element. The conical groove cylinder nested structure ensures the sealed connection of each module, and the detachable flange design facilitates the replacement of the filter element and the catalytic layer. Embodiment

[0029] On the basis of Embodiment 1, a ring-shaped support frame 23 is slidably mounted on the mounting frame 1. An annular groove 24 is formed in the ring-shaped support frame 23. A ring-shaped sliding frame 26 is rotatably mounted on the ring-shaped support frame 23. An arc-shaped sliding frame 27 rotatably mounted in the annular groove 24 is fixedly arranged on the ring-shaped sliding frame 26. A first driving member 25 for driving the ring-shaped support frame 23 to move is arranged between the mounting frame 1 and the ring-shaped support frame 23. A first transmission gear 28 is fixedly arranged at the upper end of the ring-shaped sliding frame 26. A second driving member 30 is detachably mounted on the ring-shaped sliding frame 26. A second transmission gear 29 meshing with the first transmission gear 28 is fixedly arranged on the power shaft of the second driving member 30. An inclined support slant plate 36 is arranged on the ring-shaped sliding frame 26. A first dust collection cavity 37 is fixedly arranged on the support slant plate 36. An air collecting head 38 is arranged on the first dust collection cavity 37. A second gas collecting pipe 39 is arranged on the first gas collecting cavity. The second gas collecting pipe 39 is hermetically communicated with the first gas collecting pipe 12 through a second hose 57.

[0030] A sliding frame 31 is fixedly arranged on the ring-shaped sliding frame 26. A support sliding frame 32 slidably mounted in the sliding frame 31 is fixedly arranged on the support slant plate 36. Mounting seats 33 are respectively fixedly arranged on the support sliding frame 32 and the sliding frame 31. A first screw rod 35 is fixedly arranged on the two mounting seats 33. The thread directions of the two first screw rods 35 are opposite and are connected by a double-threaded pipe 34. The double-threaded pipe 34 is operated to adjust the distance between the two first screw rods 35.

[0031] Specifically: The first driving member 25 is an electric push rod or a hydraulic cylinder. The first driving member 25 is mounted on the mounting frame 1 through bolt nuts. The cross-section of the mounting frame 1 is quadrilateral. The cross-section of the inner circle of the ring-shaped support frame 23 corresponds to the mounting frame 1 and is quadrilateral. The second driving member 30 is a forward and reverse servo motor. The second driving member 30 is mounted on the ring-shaped support frame 23 through bolt nuts. The cross-section of the annular groove 24 is in a 'concave' shape. The cross-section of the arc-shaped sliding frame 27 corresponds to the annular groove 24 and is in a 'convex' shape.

[0032] In actual operation: The dynamic capture of welding waste gas is achieved through a multi-degree-of-freedom adjustable dust collection structure. The first driving component 25 drives the annular support frame 23 to slide axially along the quadrilateral mounting frame 1, driving the overall movement of the annular sliding frame 26. The second driving component 30 drives the annular sliding frame 26 to rotate in the annular groove 24 by engaging the second transmission gear 29 with the first transmission gear 28, so that the support inclined plate 36 and the air collection head 38 are circumferentially positioned around the welding torch 2. During welding, the double-threaded pipe 34 rotates to adjust the distance between the two first screw rods 35, so that the air collection head 38 accurately approaches the welding point. After the waste gas is inhaled into the first dust collection cavity 37 by the air collection head 38, it is transported to the filtering device through the second air collection pipe 39 and the second hose 57. The nested structure of the annular support frame 23 and the four sides of the mounting frame 1 ensures the sliding stability. The guide rails of the sliding frame 31 and the support sliding frame 32 cooperate to adjust the position of the support inclined plate 36, realizing the continuous and efficient collection of waste gas during the movement of the welding torch 2. Embodiment

[0033] Based on Embodiment 1 or Embodiment 2, it further includes a controller 59, a backflush pump body 54, and a smoke detection sensor system 58. The controller 59 uses a PLC controller 59. The exhaust pipe of the backflush pump body 54 is provided with three backflush pipes 55, and one backflush pipe 55 is hermetically connected to the first backflush pipe 55, and the other two backflush pipes 55 are respectively hermetically connected to the first hose 56 and the second hose 57. Solenoid valves are respectively arranged on the three backflush pipes 55, the first hose 56, and the second hose 57. The solenoid valves, the vacuum cleaner 46, the first driving component 25, the second driving component 30, the backflush pump body, and the smoke detection sensor system 58 are all electrically connected to the controller 59. The smoke detection sensor system 58 includes a plurality of smoke detection sensors evenly distributed circumferentially on the welding mechanism. The detection signals of the plurality of circumferentially evenly distributed smoke detection sensors are transmitted to the controller 59, and the controller 59 controls the operation of the second driving component 30 to adjust the position of the air collection head 38.

[0034] Specifically: The welding mechanism includes a workbench and a mounting bracket. The smoke detection sensor can be installed on the mounting frame 1 through an annular frame or on the mounting bracket of the welding mechanism through bolts and nuts.

[0035] In actual operation: The dynamic optimization of the waste gas collection and purification process is achieved through an intelligent closed-loop control system. During welding, the circumferentially distributed smoke detection sensors continuously monitor the smoke concentration in different areas and transmit the signals to the PLC controller 59. The controller 59 automatically controls the second driving component 30 to adjust the orientation of the air collection head 38 according to the concentration difference, so that the air collection head 38 in the high-concentration area approaches the welding point to improve the suction efficiency. The backflush pump body 54 is started according to a preset program or the filter element pressure difference signal. The three backflush pipes 55 respectively inject high-pressure air into the first backflush pipe 55, the first hose 56 and the second hose 57. The air flow in the first backflush pipe 55 reversely impacts and backflushes the backflush composite filter element 52 to remove dust accumulation. The air flows in the other two backflush pipes 55 reversely scour the internal pipelines of the dust collection device to prevent blockage. The PLC controller 59 synchronously controls the opening and closing timings of the solenoid valves in each pipeline. The negative pressure of the vacuum cleaner 46 and the backflush air flow cooperate to maintain the efficient operation of the system. The smoke detection sensor array installed on the annular frame ensures no blind spots in detection. The modular control unit adapts to the layout requirements of different installation brackets.

[0036] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel plate production welding mechanism with an exhaust gas cleaning structure, comprising a mounting frame (1) and a filtering device, wherein a welding gun (2) is detachably mounted on the mounting frame (1), a welding head (3) is provided on the welding gun (2), a dust collecting device is detachably sleeved on the welding gun (2), the dust collecting device is sealed and connected to the filtering device through a first hose (56), and is characterized in that: The dust collecting device comprises an upper integrated cavity (8) and a lower integrated cavity (17); the upper integrated cavity (8) is detachably sleeved on the welding gun (2); an upper limit frame (9) is fixedly arranged on the inner wall of the upper integrated cavity (8); a third flange (10) is fixedly arranged at the lower end of the upper integrated cavity (8); a first gas collecting pipe (12) sealed and connected to a first hose (56) is fixedly arranged on the upper integrated cavity (8); a lower limit frame (18) corresponding to the upper limit frame (9) is fixedly arranged on the inner wall of the lower integrated cavity (17); a third flange (10) is fixedly arranged at the upper end of the lower integrated cavity (17 ... third flange (10) is fixedly arranged at the lower end of the lower integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the lower integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the lower integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the upper integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the lower integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the upper integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the upper integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the upper integrated cavity (17); a third flange (10) is fixedly arranged at the lower end of the upper integrated cavity A fourth flange (16) corresponding to the third flange (10), the third flange (10) and the fourth flange (16) are connected and fixed by fixing bolts (15), and a filter annular frame (13) is clamped between the lower limit frame (18) and the upper limit frame (9), and an annular filter screen (14) is arranged on the filter annular frame (13), and an air collecting hole (20) is opened at the lower end of the lower integrated cavity (17), and a second air collecting pipe (39) sealed and connected with the air collecting hole (20) is fixedly arranged on the inner wall, and an air inlet hole (22) is opened on the upper half of the second air collecting pipe (39); The filtering device comprises a filtering box (40), a first annular frame (42) is fixedly arranged on the inner wall of the filtering box (40), a filtering cylinder (50) is detachably mounted on the filtering box (40), an annular sleeve (48) is fixedly arranged on the filtering cylinder (50), the filtering cylinder (50) is connected and fixed to the filtering box (40) by fixing bolts (15), and the annular sleeve (48) and the first annular frame (42) are sealed, and a third air collecting member is arranged on the filtering box (40). A tube (41) is provided, a gap is reserved between the filter cylinder (50) and the filter box (40), the gap between the two is sealed and connected to the first hose (56) through the third air collecting pipe (41), a dust collector (46) is provided on the filter cylinder (50), and the dust collector (46) is sealed and connected to the filter cylinder (50) through a negative pressure pipe (47), and the filter cylinder (50) is provided with a precooling unit module (53), a back-blowing composite filter element (52) and an activated carbon adsorption layer (51) in sequence from bottom to top.

2. A steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 1, characterized in that: The third flange (10) is provided with a plurality of first screw holes (7) uniformly distributed in the circumferential direction, the fourth flange (16) is provided with a first through hole (5) corresponding to the first screw hole (7), the fixing bolt (15) comprises a smooth end at the bottom and a threaded end at the top, the fixing bolt (15) passes through the first through hole (5) and is threadedly connected to the first screw hole (7).

3. The steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 1, characterized in that: The air collecting holes (20) and the second air collecting pipe (39) are evenly distributed on the lower integrated cavity (17) in the circumferential direction, a gap is reserved between the air inlet holes (22) and the bottom surface of the inner wall of the lower integrated cavity (17), and a sealing end surface is provided at the upper end of the second air collecting pipe (39).

4. A steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 3, characterized in that: A first flange (4) is fixedly arranged on the outer wall of the welding gun (2), and a first through hole (5) is opened on the first flange (4); a second flange (6) is fixedly arranged on the upper integrated cavity (8), and a first screw hole (7) is opened on the second flange (6); the first flange (4) and the second flange (6) are connected and fixed by fixing bolts (15).

5. The steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 4, characterized in that: The third flange (10) is provided with a first tapered groove (11), and the fourth flange (16) is provided with a first tapered cylinder (19) corresponding to the first tapered groove (11).

6. A steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 5, characterized in that: A top plate (44) is fixedly arranged on the upper end of the annular sleeve (48), a fifth flange (45) is fixedly arranged on the top plate (44) and the filter box (40), and the two fifth flanges (45) are connected and fixed by bolts and nuts. A second conical cylinder (49) is provided on the annular sleeve (48), and a second conical groove (43) corresponding to the second conical cylinder (49) is provided on the first annular frame (42) of the filter box (40). The dust collector (46) is mounted on the top plate (44) by bolts and nuts, and a negative pressure pipe (47) is fixedly passed through the top plate (44).

7. A steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 6, characterized in that: The precooling unit module (53) comprises an annular gas delivery cavity (5301) fixedly installed in the filter cylinder (50), the upper and lower end surfaces of the annular gas delivery cavity (5301) are fixedly provided with honeycomb filter plates (5302), the inner ring of the annular gas delivery cavity (5301) is fixedly provided with a plurality of circumferentially evenly distributed annular atomizing nozzles (5304), the injection direction of the annular atomizing nozzles (5304) forms an angle of 30-45° with the intake tangential flow, the upper end of the annular gas delivery cavity (5301) is provided with an air delivery pipe (5303), and the air delivery pipe (5303) is provided with a plurality of circumferentially evenly distributed annular atomizing nozzles (5304). 03) is fixedly passed through the top plate (44), the back-flushing composite filter element (52) comprises an annular bottom plate (5201) fixedly mounted on the inner wall of the filter cylinder (50), the annular bottom plate (5201) is provided with a PTFE coating layer (5202), a metal fiber sintered felt (5203), and an in-situ regenerative catalytic layer (5204) in sequence from the inside to the outside, and the upper ends of the three are in a sealed state, a gap is reserved between the in-situ regenerative catalytic layer (5204) and the inner wall of the filter cylinder (50), and a first back-flushing pipe (55) for back-flushing is provided on the top plate (44).

8. A steel plate production welding mechanism with an exhaust gas cleaning structure according to any one of claims 1 to 7, characterized in that: An annular support frame (23) is slidably mounted on the mounting frame (1), an annular groove (24) is provided on the annular support frame (23), an annular sliding frame (26) is rotatably mounted on the annular support frame (23), an arc-shaped sliding frame (27) rotatably mounted in the annular groove (24) is fixedly arranged on the annular sliding frame (26), a first driving component (25) for driving the annular support frame (23) to move is arranged between the mounting frame (1) and the annular support frame (23), a first transmission gear (28) is fixedly arranged on the upper end of the annular sliding frame (26), and the annular sliding frame (26) is provided with a first transmission gear (28). 6), a second driving component (30) is detachably mounted on the driving shaft of the second driving component (30), a second transmission gear (29) meshing with the first transmission gear (28) is fixedly arranged, the annular sliding frame (26) is provided with an inclined support inclined plate (36), a first dust collecting chamber (37) is fixedly arranged on the support inclined plate (36), the first dust collecting chamber (37) is provided with an air collecting head (38), the first air collecting chamber is provided with a second air collecting pipe (39), and the second air collecting pipe (39) is sealed and connected to the first air collecting pipe (12) through a second hose (57).

9. The steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 8, characterized in that: A sliding frame (31) is fixedly arranged on the annular sliding frame (26), a supporting sliding frame (32) slidably mounted in the sliding frame (31) is fixedly arranged on the supporting inclined plate (36), mounting seats (33) are fixedly arranged on the supporting sliding frame (32) and the sliding frame (31), first screw rods (35) are fixedly arranged on the two mounting seats (33), the thread directions of the two first screw rods (35) are opposite, and the two first screw rods (35) are connected by a double threaded tube (34), and the distance between the two first screw rods (35) is adjusted by operating the double threaded tube (34).

10. The steel plate production welding mechanism with an exhaust gas cleaning structure according to claim 9, characterized in that: The device also comprises a controller (59), a recoil pump body (54) and a smoke detection sensor system (58). The controller (59) is a PLC controller (59). The exhaust pipe of the recoil pump body (54) is provided with three recoil pipes (55), one recoil pipe (55) is sealedly connected to the first recoil pipe (55), and the other two recoil pipes (55) are sealedly connected to the first hose (56) and the second hose (57). The three recoil pipes (55), the first hose (56) and the second hose (57) are respectively provided with electric The solenoid valve, the vacuum cleaner (46), the first drive component (25), the second drive component (30), the backwash pump body, and the smoke detection sensor system (58) are all electrically connected to the controller (59). The smoke detection sensor system (58) includes a plurality of smoke detection sensors uniformly distributed circumferentially on the welding mechanism. The detection signals of the plurality of circumferentially uniformly distributed smoke detection sensors are transmitted to the controller (59). The controller (59) controls the second drive component (30) to work and adjust the position of the gas collecting head (38).

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