Steel structure laser cutting waste gas discharging device

Abstract

The invention relates to the technical field of laser cutting, in particular to a steel structure laser cutting waste gas discharging device which comprises a laser welding box and a power exhaust pipe, one end of the power exhaust pipe is communicated with the laser welding box, and the other end of the power exhaust pipe is communicated with a rotatable ventilation structure. A base is mounted on the bottom surface of the rotatable ventilation structure, a treatment column is rotatably connected to the upper end of the base, an exhaust barrel is detachably rotatably arranged on the treatment column and detachably connected with the rotatable ventilation structure, and a plurality of treatment cavities are formed in the end surface of the treatment column. Waste gas is firstly filled below the lowermost separation disc to be in contact with corresponding treatment liquid, the movable ring frame firstly pulls the lowermost blocking rod to be separated from the separation disc through the hanging rope, the treatment liquid above the corresponding separation disc flows below the separation disc, meanwhile, the waste gas flows above the separation disc above, and therefore when the movable ring frame moves upwards, the waste gas is separated from the separation disc. The waste gas sequentially moves upwards to correspond to the space above the separation disc, so that the contact time of the waste gas and treatment liquid is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and in particular to an exhaust device for steel structure laser cutting waste gas. Background Art

[0002] A steel structure is mainly composed of steel beams, steel columns, steel trusses and other components made of sections and steel plates. When producing a steel structure, a laser cutting machine will be used for processing. During the working process of the laser cutting machine, waste gas will be generated. The waste gas is a toxic and harmful gas, which will pollute the environment and affect human health. Therefore, when using a laser cutting machine, a treatment device is needed to treat the waste gas.

[0003] Chinese Patent CN212999103U discloses an exhaust gas treatment device for a laser cutting machine, including a water tank, an exhaust gas inlet, a one-way valve, an air extraction channel, an air extraction fan and a toxic exhaust gas treatment device. The exhaust gas inlet is connected to the upper part of the water tank and is communicated with the water tank. The one-way valve is arranged in the exhaust gas inlet. A single-chip microcomputer, a three-color alarm lamp and a buzzer are arranged on the upper part of the water tank. The air extraction channel is a hollow square cavity. One side of the air extraction channel is connected to the side wall of the water tank. The air extraction fan is connected to the other side of the air extraction channel. The toxic exhaust gas treatment device is arranged in the air extraction channel. To solve the above technical problems, the utility model provides a laser cutting machine exhaust gas treatment device that can effectively treat waste materials and exhaust gas. The above related technologies have the following defects: when treating the exhaust gas generated by laser cutting, the exhaust gas will pass through the treatment liquid from below to absorb the harmful substances in the exhaust gas. However, since the gas is lighter, it forms bubbles in the treatment liquid and quickly rises, and then is discharged after separating from the treatment liquid. The absorption time is short and the absorption reaction is not complete. Therefore, an exhaust device for steel structure laser cutting waste gas is proposed. Summary of the Invention

[0004] In order to increase the contact time between the exhaust gas and the treatment liquid, the present invention provides an exhaust device for steel structure laser cutting waste gas.

[0005] An exhaust device for steel structure laser cutting waste gas provided by the present invention adopts the following technical solutions: including a laser welding box and a power extraction pipe. One end of the power extraction pipe is connected and installed in communication with the laser welding box. The other end of the power extraction pipe is connected and installed in communication with a rotatable ventilation structure. A base is installed on the bottom surface of the rotatable ventilation structure. A treatment column is rotatably connected to the upper end of the base. An exhaust cylinder is detachably rotated on the treatment column. The exhaust cylinder is detachably connected to the rotatable ventilation structure. A plurality of treatment cavities are opened on the end face of the treatment column. The number of treatment cavities is even. The rotatable ventilation structure is connected and installed in communication with the lower end of each treatment cavity.

[0006] A plurality of partition discs are slidably inserted into the interior of the processing chamber. A fixed-distance cylinder is fixed at the axis of the bottom surface of the partition disc. A suspension rope is fixed to the inner top wall of the fixed-distance cylinder. The lower end of the suspension rope is fixed to the upper surface of the adjacent partition disc. The upper surface of the partition disc located at the uppermost position in each processing chamber is fixedly provided with an axial reciprocating screw rod. A top plate is fixedly installed at the upper end of each processing chamber. The top plate is rotatably sleeved on the outer surface of the axial reciprocating screw rod. An axial gear is threadedly sleeved at one end of the axial reciprocating screw rod above the top plate. The axial gear is rotatably connected to the top plate. An active ring frame is slidably inserted into the interior of the processing chamber. A suspension rope is fixed to the lower end of the active ring frame. The partition disc is slidably sleeved on the outer surface of the suspension rope. A plug rod is slidably inserted at the connection between each partition disc and the suspension rope. The plug rod connected to the partition disc located at the lowermost position inside the processing chamber is fixed to the lower end of the suspension rope. The plug rods connected to the remaining upper partition discs are slidably sleeved on the outer surface of the adjacent suspension rope. A retaining ring is fixedly sleeved on the plug rod above the connected partition disc. A bottom plate is fixedly inserted at the lower end of the processing chamber. The bottom plate is located below the fixed-distance cylinder. Two round rods are fixed to the upper surface of the bottom plate. Each fixed-distance cylinder and partition disc are slidably sleeved on the outer surface of the adjacent round rod. A side reciprocating screw rod is fixed to the upper surface of the active ring frame. The upper end of the side reciprocating screw rod rotatably penetrates the bottom surface of the adjacent top plate. A side gear is threadedly sleeved at one end of the side reciprocating screw rod above the top plate. The side gear is rotatably connected to the adjacent top plate. An arc-shaped one-way toothed plate is arranged above the processing column and between every two adjacent processing chambers. The upper end of the arc-shaped one-way toothed plate is fixed to the exhaust cylinder. A plurality of toothed plate connection group structures are arranged above the processing column. The toothed plate connection group structures are fixed to the inner top wall of the exhaust cylinder.

[0007] Optionally, an external toothed ring is fixed to the outer circumferential surface of the lower end of the processing column. A driving gear is meshed with one side of the external toothed ring. A motor is fixed to the outer circumferential surface of the base. The driving gear is fixed to the output end of the motor.

[0008] Optionally, a tray is rotatably inserted into the lower end of the processing column. A disassembly bolt is rotatably inserted at the axis of the tray. The disassembly bolt is threadedly inserted into the bottom surface of the processing column. The bottom surface of each processing chamber slidably penetrates through a chassis. The bottom surface of the chassis is fixed to the upper surface of the tray.

[0009] Optionally, the rotatable ventilation structure includes an inner plug ring and an air hood ring. The air hood ring is rotatably sleeved on the outer surface of the inner plug ring. A plurality of ventilation pipes are fixedly penetrated through the inner circumferential surface of the inner plug ring. The number of ventilation pipes is the same as the number of processing chambers. The lower ends of the ventilation pipes are communicated with the adjacent processing chambers. The lower ends of the ventilation pipes are located below all the partition discs. A plurality of air outlet grooves are formed on the inner circumferential surface of the air hood ring. The number of air outlet grooves is equal to half of the number of processing chambers. The bottom surface of the air hood ring is fixed to the base. The air hood ring is communicated and installed with the power suction pipe.

[0010] Optionally, the toothed plate coupling structure includes a plurality of adjustable arc-shaped toothed plates and a linkage arc plate. Each adjustable arc-shaped toothed plate is fixed to the bottom surface of the linkage arc plate, and the upper end of the linkage arc plate is fixed to the inner top wall of the exhaust cylinder. The number of adjustable arc-shaped toothed plates is twice the number of partition plates inside one treatment chamber. The adjustable arc-shaped toothed plates are coaxially arranged with the treatment column, and the inner ring surface of the arc-shaped one-way toothed plate is tangent to the central gear.

[0011] Optionally, a plurality of air outlet grooves are arranged staggered with a plurality of toothed plate coupling structures. The toothed plate coupling structure is located between two adjacent treatment chambers, and the air outlet grooves are located between two adjacent treatment chambers. The air outlet grooves and the adjacent toothed plate coupling structures are not between the same two treatment chambers. The air outlet grooves are arranged in a dislocation manner with the arc-shaped one-way toothed plate, and the arc-shaped one-way toothed plate and the treatment column are coaxially arranged.

[0012] Optionally, a water-lifting plate is slidably sleeved on the outer surface of the distance-setting cylinder. Water-permeable holes are provided at the positions of the water-lifting plate adjacent to the blocking rods. A ring plate is slidably inserted into each treatment chamber, and the ring plate is located above each partition plate. The plurality of water-lifting plates in the same treatment chamber are connected by a linkage rope, and the partition plate is slidably sleeved on the outer surface of the adjacent linkage rope.

[0013] Optionally, an adjustable reciprocating screw rod is fixed to the upper surface of the ring plate. The upper end of the adjustable reciprocating screw rod slidably penetrates the bottom surface of the adjacent top plate. An adjustable gear is threadedly sleeved at one end of the adjustable reciprocating screw rod above the top plate. An internal gear ring is arranged above the treatment column. The adjustable gear meshes with the internal gear ring, and the internal gear ring is fixed to the exhaust cylinder. The inner diameter of the water-permeable hole is larger than the outer diameter of the retaining ring.

[0014] Optionally, the length of the suspension rope is greater than the length of the distance-setting cylinder, and a plurality of treatment chambers are evenly distributed in a circumferential array around the axis of the treatment column.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] 1. By setting components such as partition plates, distance-setting cylinders, suspension ropes, and blocking rods, the blocking rods are inserted into the partition plates, and at the same time, the distance-setting cylinder contacts the adjacent lower partition plate, separating the treatment liquid in the treatment chamber into several separate parts. Then, after controlling the suspension rope to be tightened, the waste gas first fills the space below the lowermost partition plate and contacts the corresponding treatment liquid. Then, during the rotation of the treatment column, the side gear meshes with the toothed plate coupling structure, driving the movable ring frame to gradually move upward. The movable ring frame first pulls the lowermost blocking rod away from the partition plate through the suspension rope. The treatment liquid above the corresponding partition plate flows to below the partition plate, and at the same time, the waste gas flows to above the upper partition plate. Then, when the suspension rope continues to move upward, the upper end of the lowermost blocking rod pushes the lower end of the adjacent upper blocking rod, causing the upper blocking rod to separate from the corresponding partition plate. Thus, during the upward movement of the movable ring frame, the waste gas gradually moves upward to the space above the corresponding partition plates in sequence, increasing the contact time between the waste gas and the treatment liquid and preventing the direct discharge of the waste gas with insufficient absorption.

[0017] 2. The present invention drives the adjusting gear to mesh with the internal gear ring during the rotation of the treatment column by arranging components such as a water-lifting tray, an annular plate, a linkage rope, and an adjusting reciprocating screw rod. The internal gear ring drives the annular plate to move up and down reciprocally by meshing with the adjusting reciprocating screw rod. When the annular plate moves upward, it pulls the water-lifting tray through the linkage rope, and the treatment liquid above the water-lifting tray flows downward through the water-permeable holes to increase the contact area with the waste gas. Then, when the annular plate moves downward, the water-lifting tray moves downward under gravity. Thus, the treatment liquid can be agitated when the annular plate moves up and down, increasing the absorption efficiency of the treatment liquid for the waste gas.

[0018] 3. The present invention drives the disassembly bolt to disengage from the treatment column by arranging a tray, a chassis, and a disassembly bolt. When it is necessary to replace the treatment liquid in the treatment cavity, the chassis is driven by the tray to disengage from the treatment column, so that the liquid and treatment residue in the treatment column can be discharged. Then, the chassis is inserted into the treatment cavity, the exhaust pipe is disassembled from the treatment column, and new treatment liquid is added. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the schematic diagram of the overall structure in the embodiment of the present invention;

[0020] Figure 2 is the schematic diagram of the connection structure between the internal plug ring and the air hood ring in the embodiment of the present invention;

[0021] Figure 3 is the schematic top view of a partial structure in the embodiment of the present invention;

[0022] Figure 4 is the schematic diagram of the internal structure of the treatment column in the embodiment of the present invention;

[0023] Figure 5 is the schematic side view of a partial structure in the embodiment of the present invention;

[0024] Figure 6 is the schematic diagram of the connection structure between the side gear and the side reciprocating screw rod in the embodiment of the present invention;

[0025] Figure 7 is the schematic front view of a partial structure in the embodiment of the present invention;

[0026] Figure 8 is the schematic diagram of the connection structure between the plug rod and the partition plate in the embodiment of the present invention.

[0027] Reference numerals: 1, laser welding box; 2, power extraction pipe; 3, base; 4, treatment column; 5, rotatable ventilation structure; 51, inner blocking ring; 52, air hood ring; 53, ventilation pipe; 54, air outlet groove; 6, exhaust pipe; 7, treatment chamber; 8, partition plate; 9, suspension rope; 10, fixed-distance cylinder; 11, axial reciprocating lead screw; 12, top plate; 13, axial gear; 14, movable ring frame; 15, suspension cord; 16, blocking rod; 18, retaining ring; 19, bottom plate; 20, round rod; 21, side reciprocating lead screw; 22, side gear; 23, arc-shaped one-way tooth plate; 24, tooth plate coupling structure; 241, adjusting arc-shaped tooth plate; 242, linkage arc plate; 25, outer tooth ring; 26, driving gear; 27, motor; 28, tray; 29, disassembly bolt; 30, chassis; 31, water-lifting plate; 32, water-permeable hole; 33, ring plate; 34, linkage cord; 35, adjusting reciprocating lead screw; 36, inner tooth ring; 37, adjusting gear. Detailed implementation mode

[0028] The following is further detailed description of the present invention in conjunction with the attached Figures 1 - 8 drawings.

[0029] An embodiment of the present invention discloses a waste gas discharge device for laser cutting of steel structures. As Figures 1 - 8 shown, it includes a laser welding box 1 and a power extraction pipe 2. One end of the power extraction pipe 2 is connected and installed in communication with the laser welding box 1, and the other end of the power extraction pipe 2 is connected and installed in communication with a rotatable ventilation structure 5. The bottom surface of the rotatable ventilation structure 5 is provided with a base 3. The upper end of the base 3 is rotatably connected with a treatment column 4. The outer ring surface of the lower end of the treatment column 4 is fixed with an outer tooth ring 25. One side of the outer tooth ring 25 is engaged with a driving gear 26. The outer ring surface of the base 3 is fixed with a motor 27. The driving gear 26 is fixed to the output end of the motor 27. The motor 27 can drive the treatment column 4 to rotate by driving the driving gear 26 to engage with the outer tooth ring 25.

[0030] The treatment column 4 is detachably rotatably provided with an exhaust pipe 6. The exhaust pipe 6 is detachably connected to the rotatable ventilation structure 5. A plurality of treatment chambers 7 are opened on the end surface of the treatment column 4. The lower end of the treatment column 4 is rotatably inserted with a tray 28. A disassembly bolt 29 is rotatably inserted at the axis of the tray 28. The disassembly bolt 29 is threadedly inserted into the bottom surface of the treatment column 4. The bottom surface of each treatment chamber 7 slidably penetrates through a chassis 30. The bottom surface of the chassis 30 is fixed to the upper surface of the tray 28. By rotating the disassembly bolt 29 relative to the treatment column 4, the tray 28 and the chassis 30 can be separated from the treatment column 4, and the treatment liquid in the treatment chamber 7 can be discharged. The number of treatment chambers 7 is even, and the rotatable ventilation structure 5 is connected and installed in communication with the lower end of each treatment chamber 7.

[0031] The rotatable ventilation structure 5 includes an inner plugging ring 51 and an air hood ring 52. The air hood ring 52 is rotatably sleeved on the outer surface of the inner plugging ring 51. A plurality of ventilation pipes 53 are fixedly penetrated through the inner ring surface of the inner plugging ring 51. The number of the ventilation pipes 53 is the same as the number of the treatment chambers 7. The lower ends of the ventilation pipes 53 communicate with the adjacent treatment chambers 7. The lower ends of the ventilation pipes 53 are located below all the partition plates 8. When the ventilation pipes 53 fill the treatment chambers 7 with waste gas, the waste gas first fills the space below the lowermost partition plate 8. A plurality of air outlet grooves 54 are formed in the inner ring surface of the air hood ring 52. The number of the air outlet grooves 54 is equal to half of the number of the treatment chambers 7. The bottom surface of the air hood ring 52 is fixed to the base 3. The air hood ring 52 is connected and installed with the power extraction pipe 2. The power extraction pipe 2 fills the waste gas generated in the laser welding box 1 into the air hood ring 52. The gas in the air hood ring 52 fills the corresponding treatment chambers 7 through the air outlet grooves 54 and the ventilation pipes 53.

[0032] A plurality of partition plates 8 are slidably inserted into the treatment chambers 7. A distance-determining cylinder 10 is fixed at the axis of the bottom surface of the partition plate 8. A suspension rope 9 is fixed to the inner top wall of the distance-determining cylinder 10. The lower end of the suspension rope 9 is fixed to the upper surface of the adjacent partition plate 8. The length of the suspension rope 9 is greater than the length of the distance-determining cylinder 10. The plurality of treatment chambers 7 are evenly distributed in a circumferential array around the axis of the treatment column 4. When pulling the uppermost partition plate 8 upward, the adjacent partition plates 8 are gradually pulled upward in sequence through the suspension rope 9.

[0033] On the upper surface of the uppermost partition plate 8 in each treatment chamber 7, a central reciprocating lead screw 11 is fixed. At the upper end of each treatment chamber 7, a top plate 12 is fixedly installed. The top plate 12 is rotatably sleeved on the outer surface of the central reciprocating lead screw 11. A central gear 13 is threadedly sleeved at one end of the central reciprocating lead screw 11 above the top plate 12. The central gear 13 is rotatably connected to the top plate 12. An active ring frame 14 is slidably inserted into the treatment chamber 7. A suspension rope 15 is fixed to the lower end of the active ring frame 14. The partition plate 8 is slidably sleeved on the outer surface of the suspension rope 15. A plugging rod 16 is slidably inserted at the connection of each partition plate 8 and the suspension rope 15. The plugging rod 16 connected to the lowermost partition plate 8 inside the treatment chamber 7 is fixed to the lower end of the suspension rope 15. The plugging rods 16 connected to the remaining upper partition plates 8 are slidably sleeved on the outer surface of the adjacent suspension ropes 15. A retaining ring 18 is fixedly sleeved on the plugging rod 16 above the adjacent partition plate 8. When the retaining ring 18 contacts the partition plate 8, the plugging rod 16 blocks the corresponding partition plate 8, so as to form a closed space between the adjacent partition plates 8 and separate the treatment liquid into multiple layers.

[0034] A water-lifting plate 31 is slidably sleeved on the outer surface of the distance-fixed cylinder 10. Water-permeable holes 32 are provided at the positions of the water-lifting plate 31 adjacent to the blocking rods 16. A ring plate 33 is slidably inserted into each treatment chamber 7. The ring plate 33 is located above each partition plate 8. The multiple water-lifting plates 31 in the same treatment chamber 7 are connected by a linkage rope 34. The partition plate 8 is slidably sleeved on the outer surface of the adjacent linkage rope 34. An adjusting reciprocating lead screw 35 is fixed on the upper surface of the ring plate 33. The upper end of the adjusting reciprocating lead screw 35 slidably penetrates the bottom surface of the adjacent top plate 12. A regulating gear 37 is threadedly sleeved at one end of the adjusting reciprocating lead screw 35 above the top plate 12. An internal gear ring 36 is provided above the treatment column 4. The regulating gear 37 meshes with the internal gear ring 36. The internal gear ring 36 is fixed to the exhaust pipe 6. The inner diameter of the water-permeable hole 32 is larger than the outer diameter of the retaining ring 18. When the rotation of the treatment column 4 drives the regulating gear 37 to mesh with the internal gear ring 36, the regulating gear 37 meshes with the adjusting reciprocating lead screw 35 to drive the ring plate 33 to move upward reciprocally. When the ring plate 33 moves upward, it pulls the water-lifting plate 31 through the linkage rope 34. The treatment liquid above the water-lifting plate 31 flows downward through the water-permeable hole 32 to increase the contact area with the waste gas. Then, when the ring plate 33 moves downward, the water-lifting plate 31 moves downward under gravity. Thus, when the ring plate 33 moves up and down, the treatment liquid can be agitated to increase the absorption efficiency of the treatment liquid for the waste gas.

[0035] A bottom plate 19 is fixedly inserted at the lower end of the treatment chamber 7. The bottom plate 19 is located below the distance-fixed cylinder 10. Two round rods 20 are fixed on the upper surface of the bottom plate 19. Each distance-fixed cylinder 10 and partition plate 8 are slidably sleeved on the outer surface of the adjacent round rod 20. A side reciprocating lead screw 21 is fixed on the upper surface of the movable ring frame 14. The upper end of the side reciprocating lead screw 21 rotatably penetrates the bottom surface of the adjacent top plate 12. A side gear 22 is threadedly sleeved at one end of the side reciprocating lead screw 21 above the top plate 12. The side gear 22 is rotatably connected to the adjacent top plate 12. An arc-shaped one-way toothed plate 23 is provided above the treatment column 4 and between every two adjacent treatment chambers 7. The upper end of the arc-shaped one-way toothed plate 23 is fixed to the exhaust pipe 6. After the side gear 22 meshes with an arc-shaped one-way toothed plate 23 once, the number of turns of the rotation of the side gear 22 can drive the central reciprocating lead screw 11 to move to the uppermost position or drive the central reciprocating lead screw 11 to move to the lowermost position through meshing with the side reciprocating lead screw 21.

[0036] A plurality of toothed plate coupling structures 24 are provided above the treatment column 4. The toothed plate coupling structures 24 are fixed to the inner top wall of the exhaust pipe 6.

[0037] The toothed plate linkage structure 24 includes a plurality of adjustable arc-shaped toothed plates 241 and a linkage arc plate 242. Each adjustable arc-shaped toothed plate 241 is fixed to the bottom surface of the linkage arc plate 242. The upper end of the linkage arc plate 242 is fixed to the inner top wall of the exhaust pipe 6. The number of adjustable arc-shaped toothed plates 241 is twice the number of partition plates 8 inside one treatment chamber 7. The adjustable arc-shaped toothed plates 241 are coaxially arranged with the treatment column 4. The inner ring surface of the arc-shaped one-way toothed plate 23 is tangent to the central gear 13. After the side gear 22 meshes with the first adjustable arc-shaped toothed plate 241, the lowest plug rod 16 is pulled by the suspension rope 15 to disengage from the corresponding partition plate 8. Then, after the side gear 22 successively meshes with the adjustable arc-shaped toothed plates 241, the upper plug rods 16 can be gradually driven to successively disengage from the corresponding partition plates 8. After the uppermost plug rod 16 disengages from the corresponding partition plate 8, when the side gear 22 meshes with the adjustable arc-shaped toothed plate 241 again, the side reciprocating lead screw 21 pushes the movable ring frame 14 downward, so that the plug rod 16 seals the corresponding partition plates 8 from top to bottom in sequence. During the meshing of the side gear 22 with a plurality of adjustable arc-shaped toothed plates 241 below the same linkage arc plate 242, a complete reciprocating up and down movement is performed.

[0038] A plurality of air outlet grooves 54 are arranged alternately with a plurality of toothed plate linkage structures 24. The toothed plate linkage structure 24 is located between two adjacent treatment chambers 7. The air outlet grooves 54 are located between two adjacent treatment chambers 7. The air outlet grooves 54 and the adjacent toothed plate linkage structure 24 are not between the same two treatment chambers 7. The air outlet grooves 54 are arranged in a staggered manner with the arc-shaped one-way toothed plate 23. So that after each time the plug rod 16 seals the partition plate 8 and the fixed-distance cylinder 10 contacts the adjacent lower partition plate 8, the air outlet grooves 54 will only fill the treatment chamber 7 with waste gas through the ventilation pipe 53. The arc-shaped one-way toothed plate 23 and the treatment column 4 are coaxially arranged.

[0039] The working principle is as follows: The plug rod 16 is inserted into the partition disk 8. At the same time, the fixed-distance cylinder 10 contacts the partition disk 8 adjacent below, separating the treatment liquid in the treatment chamber 7 into several separate parts. Control the rotation of the treatment column 4 to drive the central axis gear 13 to engage with an arc-shaped one-way tooth plate 23, pulling the central axis reciprocating screw rod 11 to move upward, driving the uppermost partition disk 8 to move upward, and then pulling the corresponding partition disk 8 to move upward through the suspension rope 9, making all the suspension ropes 9 taut. The waste gas is first filled into the space below the lowermost partition disk 8 and contacts the corresponding treatment liquid. Then, during the rotation of the treatment column 4, the side gear 22 engages with the tooth plate coupling structure 24, driving the movable ring frame 14 to gradually move upward. The movable ring frame 14 first pulls the lowermost plug rod 16 to disengage from the partition disk 8 through the suspension rope 15. The treatment liquid above the corresponding partition disk 8 flows to the lower part of the partition disk 8, and at the same time, the waste gas flows to the upper part of the adjacent upper partition disk 8. Then, when the suspension rope 15 continues to move upward, it pulls the upper end of the lowermost plug rod 16 to push the lower end of the adjacent upper plug rod 16, separating the upper plug rod 16 from the corresponding partition disk 8. Thus, during the upward movement of the movable ring frame 14, the lower plug rod 16 sequentially pushes the adjacent plug rod 16 upward, enabling the waste gas to gradually move upward to the upper part of the corresponding partition disk 8 in sequence, increasing the contact time between the waste gas and the treatment liquid, and preventing the direct discharge of the waste gas with insufficient absorption.

[0040] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A steel structure laser cutting waste gas discharge device, comprising a laser welding box (1) and a power extraction pipe (2), characterized in that: One end of the power extraction pipe (2) is connected and installed with the laser welding box (1). The other end of the power extraction pipe (2) is connected and installed with a rotatable ventilation structure (5). The bottom surface of the rotatable ventilation structure (5) is installed with a base (3). The upper end of the base (3) is rotatably connected with a processing column (4). The processing column (4) is detachably rotated with an exhaust pipe (6). The exhaust pipe (6) is detachably connected with the rotatable ventilation structure (5). The end face of the processing column (4) is provided with a plurality of processing chambers (7). The number of the processing chambers (7) is an even number. The rotatable ventilation structure (5) is connected and installed with the lower end of each processing chamber (7). A plurality of partition plates (8) are slidably inserted into the processing chamber (7). A fixed-distance cylinder (10) is fixed at the axis of the bottom surface of the partition plate (8). A suspension rope (9) is fixed to the inner top wall of the fixed-distance cylinder (10). The lower end of the suspension rope (9) is fixed to the upper surface of the adjacent partition plate (8). The upper surface of the partition plate (8) located at the uppermost in each processing chamber (7) is fixed with an axial reciprocating lead screw (11). The upper end of each processing chamber (7) is fixedly installed with a top plate (12). The top plate (12) is rotatably sleeved on the outer surface of the axial reciprocating lead screw (11). One end of the axial reciprocating lead screw (11) above the top plate (12) is threadedly sleeved with an axial gear (13). The axial gear (13) is rotatably connected with the top plate (12). An active ring frame (14) is slidably inserted into the processing chamber (7). A suspension rope (15) is fixed to the lower end of the active ring frame (14). The partition plate (8) is slidably sleeved on the outer surface of the suspension rope (15). A blocking rod (16) is slidably inserted at the connection of each partition plate (8) and the suspension rope (15). The blocking rod (16) connected to the partition plate (8) located at the lowermost inside the processing chamber (7) is fixed to the lower end of the suspension rope (15). The blocking rods (16) connected to the remaining upper partition plates (8) are slidably sleeved on the outer surface of the adjacent suspension rope (15). A retaining ring (18) is fixedly sleeved on the blocking rod (16) above the connected partition plate (8). The lower end of the processing chamber (7) is fixedly inserted with a bottom plate (19). The bottom plate (19) is located below the fixed-distance cylinder (10). Two round rods (20) are fixed to the upper surface of the bottom plate (19). Each fixed-distance cylinder (10) and the partition plate (8) are slidably sleeved on the outer surface of the adjacent round rod (20). A side reciprocating lead screw (21) is fixed to the upper surface of the active ring frame (14). The upper end of the side reciprocating lead screw (21) rotatably penetrates the bottom surface of the adjacent top plate (12). One end of the side reciprocating lead screw (21) above the top plate (12) is threadedly sleeved with a side gear (22). The side gear (22) is rotatably connected with the adjacent top plate (12). Above the processing column (4) and between every two adjacent processing chambers (7), an arc-shaped one-way tooth plate (23) is provided. The upper end of the arc-shaped one-way tooth plate (23) is fixed to the exhaust pipe (6). Above the processing column (4), a plurality of tooth plate connection group structures (24) are provided. The tooth plate connection group structure (24) is fixed to the inner top wall of the exhaust pipe (6).

2. The exhaust device for steel structure laser cutting waste gas according to claim 1, characterized in that: An external tooth ring (25) is fixed to the outer circumferential surface of the lower end of the treatment column (4). A driving gear (26) is engaged with one side of the external tooth ring (25). A motor (27) is fixed to the outer circumferential surface of the base (3). The driving gear (26) is fixed to the output end of the motor (27).

3. The exhaust device for steel structure laser cutting waste gas according to claim 1, characterized in that: A tray (28) is rotatably inserted into the lower end of the treatment column (4). A disassembly bolt (29) is rotatably inserted at the axis of the tray (28). The disassembly bolt (29) is threadedly inserted into the bottom surface of the treatment column (4). The bottom surface of each treatment chamber (7) slidably penetrates through a chassis (30). The bottom surface of the chassis (30) is fixed to the upper surface of the tray (28).

4. The exhaust device for steel structure laser cutting waste gas according to claim 1, characterized in that: The rotatable ventilation structure (5) includes an inner plugging ring (51) and an air hood ring (52). The air hood ring (52) is rotatably sleeved on the outer surface of the inner plugging ring (51). A plurality of ventilation pipes (53) are fixedly penetrated through the inner circumferential surface of the inner plugging ring (51). The number of the ventilation pipes (53) is the same as the number of the treatment chambers (7). The lower ends of the ventilation pipes (53) communicate with the adjacent treatment chambers (7). The lower ends of the ventilation pipes (53) are located below all the partition disks (8). A plurality of air outlet grooves (54) are formed in the inner circumferential surface of the air hood ring (52). The number of the air outlet grooves (54) is equal to half of the number of the treatment chambers (7). The bottom surface of the air hood ring (52) is fixed to the base (3). The air hood ring (52) is connected and installed with the power suction pipe (2).

5. The exhaust device for steel structure laser cutting waste gas according to claim 1, wherein: The toothed plate connection group structure (24) includes a plurality of adjusting arc-shaped toothed plates (241) and a linkage arc plate (242). Each adjusting arc-shaped toothed plate (241) is fixed to the bottom surface of the linkage arc plate (242). The upper end of the linkage arc plate (242) is fixed to the inner top wall of the exhaust cylinder (6). The number of the adjusting arc-shaped toothed plates (241) is twice the number of the partition disks (8) inside one treatment chamber (7). The adjusting arc-shaped toothed plates (241) are coaxially arranged with the treatment column (4). The inner circumferential surface of the arc-shaped one-way toothed plate (23) is tangent to the axis gear (13).

6. The exhaust device for steel structure laser cutting waste gas according to claim 4, characterized in that: A plurality of air outlet grooves (54) and a plurality of toothed plate connection group structures (24) are arranged in an alternating manner. The toothed plate connection group structure (24) is located between two adjacent treatment chambers (7). The air outlet grooves (54) are located between two adjacent treatment chambers (7). The air outlet grooves (54) and the adjacent toothed plate connection group structure (24) are not between the same two treatment chambers (7). The air outlet grooves (54) are arranged in a staggered manner with the arc-shaped one-way toothed plate (23). The arc-shaped one-way toothed plate (23) and the treatment column (4) are coaxially arranged.

7. An exhaust device for steel structure laser cutting waste gas according to claim 1, characterized in that: A water lifting tray (31) is slidably sleeved on the outer surface of the distance cylinder (10). Water permeable holes (32) are formed in the water lifting tray (31) at the positions adjacent to the blocking rods (16). A ring plate (33) is slidably inserted into each treatment chamber (7). The ring plate (33) is located above each partition disk (8). A plurality of water lifting trays (31) in the same treatment chamber (7) are connected by a linkage rope (34). The partition disk (8) is slidably sleeved on the outer surface of the adjacent linkage rope (34).

8. A steel structure laser cutting waste gas discharge device according to claim 7, characterized in that: The upper surface of the ring plate (33) is fixedly provided with an adjusting reciprocating lead screw (35). The upper end of the adjusting reciprocating lead screw (35) slidably penetrates through the bottom surface of the adjacent top plate (12). One end of the adjusting reciprocating lead screw (35) above the top plate (12) is threadedly sleeved with an adjusting gear (37). An internal gear ring (36) is arranged above the treatment column (4). The adjusting gear (37) is meshed with the internal gear ring (36). The internal gear ring (36) is fixed to the exhaust pipe (6). The inner diameter of the water permeable hole (32) is larger than the outer diameter of the retaining ring (18).

9. The exhaust device for steel structure laser cutting waste gas according to claim 1, characterized in that: The length of the suspension rope (9) is greater than the length of the fixed-distance cylinder (10). A plurality of treatment chambers (7) are evenly distributed in a circumferential array around the axis of the treatment column (4).

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