A waste gas treatment device for copper foil production and a treatment process thereof

Abstract

The present application relates to waste gas treatment technical field, specifically disclose a kind of waste gas treatment device for copper foil production, comprising: treatment tank, the inside of the treatment tank is provided with upper chamber and lower chamber, and the side of upper chamber is provided with liquid injection pipe, to carry out injection of absorption liquid in upper chamber, the side of lower chamber is provided with air inlet pipe, the inside of the lower chamber is provided with the bearing plate that single degree of freedom slips along the height direction of treatment tank, and the top of the treatment tank is inserted with exhaust pipe;Partition table, between upper chamber and lower chamber, the inside of the partition table is provided with a plurality of first through slot;The waste gas treatment device for copper foil production and its processing technology of the present application, so that waste gas can pass through water washing inside the absorption liquid of upper chamber, better reaction absorbs some harmful substances and particulate impurities etc. in waste gas, both can improve the treatment efficiency of waste gas, and can avoid air inlet pipe and waste gas is directly discharged to absorption liquid inside, resulting in reverse suction.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device and its treatment process for copper foil production. Background Technology

[0002] Copper foil is a thin, strong metal foil made of pure copper. It typically possesses excellent electrical and thermal conductivity and corrosion resistance, making it widely used in electronics, communications, and construction. In the electronics industry, copper foil is frequently used in the manufacture of printed circuit boards (PCBs). As a conductive layer deposited on the substrate, it forms a thin, continuous metal foil layer, acting as the conductor of the PCB. It easily adheres to insulating layers, receives printed protective layers, and, after etching, forms the circuit pattern. During copper foil production, whether through heating, combustion, or chemical treatment, the resulting waste gas often contains harmful and toxic substances, requiring treatment before emission.

[0003] Existing waste gas treatment methods typically employ a combination of water washing and adsorption. This involves spraying the absorbent liquid or directly introducing the waste gas into the absorbent liquid for initial water washing and absorption, followed by adsorption treatment with activated carbon. However, in some related technologies, the water washing absorption effect is unsatisfactory. If spray-type water washing is used, it is easy for the waste gas concentration in local areas within the spray coverage area to be too high and the flow rate too fast. The absorbent liquid is not quick enough to absorb the harmful substances in the waste gas, often requiring multiple spraying processes for repeated treatment to completely absorb the harmful substances, which is quite troublesome and inconvenient. On the other hand, if the waste gas is directly introduced into the absorbent liquid, it is easy for the absorbent liquid to be drawn back along the waste gas pipeline, affecting the normal operation of the equipment. Additional anti-backflow devices are required, increasing the cost of waste gas treatment. Summary of the Invention

[0004] This invention provides a waste gas treatment device and its treatment process for copper foil production, aiming to solve the problems of poor water washing absorption effect in related technologies, the need for multiple spraying processes to completely absorb harmful substances in waste gas, which is quite troublesome and inconvenient, and the need to add anti-backflow devices to prevent the absorption liquid from being drawn back along the waste gas pipeline when directly passing the waste gas into the absorption liquid, which increases the cost of waste gas treatment.

[0005] The waste gas treatment device for copper foil production of the present invention includes:

[0006] The treatment tank has an internal partition platform. An upper chamber is formed above the partition platform for injecting absorbent liquid, and a lower chamber is formed below the partition platform for purifying waste gas. Multiple vertically penetrating first channels are provided on the partition platform.

[0007] The injection pipe is installed on the treatment tank and communicates with the upper chamber to inject the absorbent into the upper chamber.

[0008] An inlet pipe, installed on the treatment tank and connected to the lower chamber, is used to inject the waste gas to be purified into the lower chamber;

[0009] The support plate, located at the bottom of the lower chamber, can slide freely along the height of the treatment tank with a single degree of freedom, and is used to receive and temporarily store the absorbent liquid;

[0010] An adjusting plate is rotatably mounted at the bottom of the partition platform. The adjusting plate has multiple vertically penetrating second through slots, which can be aligned vertically with the first through slots to form a channel.

[0011] Multiple traction components are installed inside the lower chamber to pull the adjusting plate to rotate when the support plate descends, thereby adjusting the size of the channel formed by the second through groove and the first through groove;

[0012] A rotating component is located between the partition platform and the adjusting plate to drive the adjusting plate to rotate and reset.

[0013] Multiple vertical tubes are evenly distributed in a ring on the partition platform. The top of the vertical tubes extends to the top of the upper chamber, and the bottom of the vertical tubes penetrates and extends to the bottom of the support plate. Each vertical tube has an upper notch located above the partition platform and a lower notch close to the top of the support plate. A sealing plug slides up and down inside the vertical tube to balance the absorbent liquid in the upper and lower chambers through the upper and lower notches.

[0014] The spray assembly is located inside the lower chamber and is connected to the bottom end of the vertical pipe. It is used to spray absorbent liquid into the lower chamber after the sealing plug descends to the lower notch.

[0015] Preferably, a connecting plate is fixed to the bottom of the adjusting plate, the traction assembly includes a traction rope fixed to the top of the bearing plate, a guide ring is fixed to the bottom of the partition, the top end of the traction rope passes through the guide ring and is fixed to the side of the connecting plate away from the guide ring.

[0016] Preferably, the bottom of the partition is fixed with a mounting shaft, the adjusting plate rotates on the mounting shaft, and the rotating component is a torsion spring sleeved on the outside of the mounting shaft, with both ends of the torsion spring fixed to the mounting shaft and the adjusting plate respectively.

[0017] Preferably, the spray assembly includes a spray pipe inserted into the bottom end of the vertical pipe, the top end of the spray pipe passing through the support plate and fixed to the bottom of the partition platform, and a plurality of nozzles located below the partition platform are installed on the spray pipe.

[0018] Preferably, a support plate is fixed inside the treatment tank above the vertical pipe, a sleeve is fixed on the top of the support plate, a plurality of annularly distributed partitions are provided between the sleeve and the treatment tank, and a cavity is formed between two adjacent partitions. The filter assembly is disposed inside the cavity, and a plurality of annularly distributed slots are opened inside the support plate, and the plurality of slots are respectively disposed directly above the plurality of vertical pipes.

[0019] Preferably, the filter assembly includes a mesh plate disposed in the cavity, a desiccant disposed above the mesh plate, and an activated carbon adsorption plate disposed above the desiccant.

[0020] Preferably, each of the mesh panels has a vertical rod fixed to its bottom, a baffle is slidably mounted on the outside of the vertical rod and the baffle is located inside the slot, a limiting plate located below the baffle is fixedly installed at the bottom end of the vertical rod, a spring is fixed to the bottom of the mesh panel, the bottom end of the spring is fixed to the top of the baffle, a through hole is opened at the top end of each vertical tube, and a push rod adapted to the through hole is fixed to the top of the sealing plug.

[0021] Preferably, a drive mechanism is provided on one side of the support plate to drive the sealing plug to move up and down reciprocally inside the vertical tube. The drive mechanism includes a motor installed above the processing tank. The output end of the motor is fixed with a rotating shaft that rotates inside the support plate. A gear ring is installed at the bottom end of the rotating shaft and is located below the support plate. Each vertical tube is rotatably connected to a reciprocating screw, and the sealing plug is located outside the reciprocating screw. The top ends of the multiple reciprocating screws are fixed with gears that mesh with the gear ring.

[0022] Preferably, it also includes an air-blocking assembly, which includes a housing, a second pipe, a telescopic rod, a first elastic part, a piston, and a deceleration structure. The housing is connected to the intake pipe, the second pipe is connected to the housing, the piston is inserted into the second pipe, the telescopic rod and the first elastic part are both connected between the second pipe and the piston, and exhaust gas is injected into the second pipe. The change in air pressure in the second pipe can cause the piston to disengage or engage, thereby delivering the exhaust gas intermittently. The deceleration structure is connected to the housing and is used to decelerate the exhaust gas entering the housing through the second pipe.

[0023] A waste gas treatment process for copper foil production includes the following steps:

[0024] Step 1: A certain amount of absorbent is injected into the upper chamber through the injection tube, and the absorbent accumulates above the partition.

[0025] Step 2: Part of the absorbent liquid is injected into the lower chamber through the first and second channels, and is collected by the support plate;

[0026] Step 3: Part of the absorbent liquid in the lower chamber enters the vertical pipe and is returned to the upper chamber by the sealing plug or sent into the spray assembly for spraying;

[0027] Step 4: The traction component and the rotating component drive the adjusting plate to rotate, adjusting the communication area between the first and second through slots;

[0028] Step 5: The exhaust gas is introduced into the lower chamber through the inlet pipe. The exhaust gas is sprayed with absorbent liquid by the spraying component. Then the exhaust gas rises and passes through the first and second through channels into the upper chamber. It then exits through the absorbent liquid accumulation above the partition platform, completing the exhaust gas treatment.

[0029] Beneficial effects:

[0030] 1. When in use, the present invention allows the waste gas to pass through the absorbent liquid in the upper chamber for water washing, which better absorbs some harmful substances and particulate impurities in the waste gas. This not only improves the treatment efficiency of the waste gas, but also avoids backflow caused by the waste gas being directly discharged into the absorbent liquid through the inlet pipe, thus enhancing the performance of the equipment.

[0031] 2. When in use, this invention can automatically balance the content of absorbent liquid in the upper and lower chambers, ensuring that the equipment can continuously wash the waste gas with water, and at the same time, it can perform preliminary spraying treatment on the waste gas in the lower chamber, further improving the subsequent water washing and absorption effect of the waste gas.

[0032] 3. When in use, this invention can centrally discharge waste gas in different areas, making the flow of waste gas in different areas approximately the same, ensuring that the adsorption efficiency of the activated carbon adsorption plates in different areas can be maximized, thereby improving the utilization rate of the activated carbon adsorption plates.

[0033] 4. When in use, the present invention can intermittently transport waste gas into the treatment tank, and the deceleration structure reduces the flow speed of the waste gas, thereby reducing the flow speed of the waste gas in the treatment tank and increasing the treatment effect of the waste gas. Attached Figure Description

[0034] Figure 1 This is a perspective view of the first embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the internal structure of the lower chamber according to the first embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the internal structure of the upper chamber in the first embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of the partition platform and the support plate according to the first embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the structure of the vertical tube according to the first embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of the traction component according to the first embodiment of the present invention.

[0040] Figure 7 This is a top view of the partition platform according to the first embodiment of the present invention.

[0041] Figure 8 This is the present invention. Figure 6 A magnified structural diagram of point A in the middle.

[0042] Figure 9 This is a schematic diagram of the disassembled state of the partition platform and the adjustment plate according to the first embodiment of the present invention.

[0043] Figure 10 This is a schematic diagram of the structure of the filter component according to the first embodiment of the present invention.

[0044] Figure 11 This is a three-dimensional structural schematic diagram of the air barrier component according to the second embodiment of the present invention.

[0045] Figure 12 This is a cross-sectional structural diagram of the air barrier component according to the second embodiment of the present invention.

[0046] Figure 13 This is a cross-sectional three-dimensional structural diagram of the air barrier component according to the second embodiment of the present invention.

[0047] Figure label:

[0048] 10. Processing tank; 11. Upper chamber; 12. Lower chamber; 13. Injection pipe; 14. Air inlet pipe; 15. Support plate; 151. Connecting pipe; 152. Solenoid valve; 16. Exhaust pipe; 17. Drain pipe; 18. Sealing ring; 20. Divider platform; 21. First through groove; 22. Mounting shaft; 23. Torsion spring; 30. Adjusting plate; 31. Second through groove; 32. Connecting plate; 40. Vertical pipe; 41. Upper notch; 42. Lower notch; 43. Sealing plug; 431. Push rod; 44. Through hole; 50. Traction assembly; 51. Traction rope; 52. Guide ring; 60. Spray assembly; 61. Spray pipe; 62. Spray head; 70. Filter assembly; 71, mesh plate; 711, vertical rod; 712, baffle; 713, spring; 714, limiting plate; 72, desiccant; 73, activated carbon adsorption plate; 80, support plate; 81, sleeve; 82, partition; 83, empty slot; 90, drive mechanism; 91, motor; 92, gear ring; 93, reciprocating screw; 94, gear; 95, rotating shaft; 1a, air blocking assembly; 1b, tube body one; 1c, box body; 1d, tube body two; 1e, tube body three; 1f, support part; 1g, telescopic rod; 1h, elastic part one; 1i, piston; 1j, air blocking part one; 1k, elastic part two; 1m, air blocking part two; 1n, elastic part three. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] like Figures 1 to 10 The first embodiment of the present invention is shown. The waste gas treatment device for copper foil production of the present invention includes a treatment tank 10. A partition platform 20 is provided in the middle of the treatment tank 10, dividing the interior of the treatment tank 10 into an upper chamber 11 and a lower chamber 12. A liquid injection pipe 13 is inserted into the side wall of the treatment tank 10 on one side of the upper chamber 11, and an air inlet pipe 14 is inserted into the side wall of the treatment tank 10 on one side of the lower chamber 12. A plurality of vertically penetrating first through slots 21 are provided on the partition platform 20. An adjusting plate 30 is rotatably connected to the bottom of the partition platform 20. A plurality of vertically penetrating first through slots 21 are provided on the adjusting plate 30. The second through slot 31 is connected and can be aligned vertically with the first through slot 21 to form a channel, so that the upper chamber 11 and the lower chamber 12 are connected. Inside the lower chamber 12, a support plate 15 located below the air inlet pipe 14 slides vertically. Multiple sets of traction components 50 are provided inside the lower chamber 12 to pull the adjustment plate 30 to rotate when the support plate 15 is lowered, so as to adjust the size of the channel formed between the second through slot 31 and the first through slot 21. There is a rotating component between the partition platform 20 and the adjustment plate 30 to push the adjustment plate 30 to rotate and reset, so that the support plate 15 is raised.

[0051] Multiple vertical tubes 40 are fixed on the partition platform 20. The top of each vertical tube 40 extends to the top of the upper chamber 11, and the bottom of each vertical tube 40 extends through and to the bottom of the support plate 15. Each vertical tube 40 has an upper notch 41 located above the partition platform 20 and a lower notch 42 close to the top of the support plate 15. This allows the absorbent liquid in the lower chamber 12 to enter the vertical tube 40 through the lower notch 42, and allows the absorbent liquid in the vertical tube 40 to drain into the upper chamber 11 through the upper notch 41. Each vertical tube 40 has a sealing plug that slides up and down inside. 43 is used to move the absorbent liquid entering the vertical pipe 40, and to balance the absorbent liquid in the upper chamber 11 and lower chamber 12 through the upper notch 41 and the lower notch 42. Each vertical pipe 40 is provided with a spray assembly 60 extending to the support plate 15 at the bottom end, which is used to spray the absorbent liquid into the lower chamber 12 after the sealing plug 43 descends to the lower notch 42. The upper chamber 11 is provided with a filter assembly 70 located above the vertical pipe 40, which is used to filter the exhaust gas. The top of the treatment tank 10 is provided with an exhaust pipe 16.

[0052] refer to Figure 6 and Figure 9A connecting plate 32 is installed at the bottom of the adjusting plate 30. Multiple traction components 50 include traction ropes 51 fixed to the top of the bearing plate 15. A guide ring 52 is fixed at the bottom of the partition platform 20. The traction rope 51 passes through the guide ring 52, and the top of the traction rope 51 is fixed to the side of the connecting plate 32 away from the guide ring 52. As the weight of the absorbent liquid on the bearing plate 15 increases, the bearing plate 15 moves downward and the traction rope 51 pulls the connecting plate 32, causing it to rotate with the adjusting plate 30 at the bottom of the partition platform 20, so that the first through groove 21 and the second through groove 31 gradually become misaligned.

[0053] refer to Figure 8 and Figure 9 The bottom of the partition platform 20 is fixed with a mounting shaft 22. The rotating component is a torsion spring 23 sleeved on the outside of the mounting shaft 22. The two ends of the torsion spring 23 are respectively fixed to the mounting shaft 22 and the adjusting plate 30. When the traction rope 51 pulls the adjusting plate 30 to rotate, it will compress the torsion spring 23. As the weight of the absorbent liquid on the bearing plate 15 decreases, the tension of the traction rope 51 decreases, and the torsion spring 23 gradually rotates back to its original position, thereby driving the adjusting plate 30 to rotate, so that the first through groove 21 and the second through groove 31 gradually align.

[0054] refer to Figure 2 , Figure 4 as well as Figure 5 The spray assembly 60 includes a spray pipe 61 inserted into the bottom end of the vertical pipe 40. The top end of the spray pipe 61 passes through the support plate 15 and is fixed to the bottom of the partition platform 20. Multiple nozzles 62 located below the partition platform 20 are installed on the spray pipe 61. When the sealing plug 43 descends, it will force the absorbent liquid entering the vertical pipe 40 into the interior of the spray pipe 61 and spray the absorbent liquid from the nozzles 62 into the interior of the lower chamber 12, increasing the dispersion area of ​​the absorbent liquid and allowing the absorbent liquid to better contact with the exhaust gas in the lower chamber 12, so as to perform preliminary reaction and absorption of harmful substances in the exhaust gas.

[0055] refer to Figure 4Inside the treatment tank 10, a support plate 80 is fixed above the vertical pipe 40. A drive mechanism 90 is provided on one side of the support plate 80 to drive the sealing plug 43 to move up and down reciprocally inside the vertical pipe 40. The drive mechanism 90 includes a motor 91 installed above the treatment tank 10. The output end of the motor 91 is fixed with a rotating shaft 95 that rotates inside the support plate 80. A gear ring 92 is installed at the bottom end of the rotating shaft 95 and is located below the support plate 80. Each vertical pipe 40 is rotatably connected to a reciprocating screw 93, and the sealing plug 43 is located outside the reciprocating screw 93. The top of each of the multiple reciprocating screws 93 is fixed with a gear 94 that meshes with the gear ring 92. The motor 91 drives the gear ring 92 to rotate, which in turn drives the multiple gears 94 to rotate, so that the reciprocating screws 93 inside the multiple vertical pipes 40 simultaneously push the sealing plug 43 inside to move up and down reciprocally, so that the absorbent liquid inside the vertical pipe 40 is pumped into the spray pipe 61 or pushed to the upper notch 41 and discharged into the upper chamber 11.

[0056] refer to Figure 3 and Figure 10 A sleeve 81 is fixed to the top of the support plate 80. The motor 91 is located inside the sleeve 81. Multiple annularly distributed partitions 82 are provided between the sleeve 81 and the treatment tank 10, and a cavity is formed between two adjacent partitions 82. The filter assembly 70 is located inside the cavity. Multiple annularly distributed slots 83 are opened inside the support plate 80, and the multiple slots 83 are respectively located directly above multiple vertical pipes 40, so that the cavity is connected to the upper chamber 11, so that the waste gas accumulated in the upper chamber 11 can enter the cavity through the slots 83 and then be filtered by the filter assembly 70.

[0057] refer to Figure 3 and Figure 10 The filter assembly 70 includes a mesh plate 71 disposed in a cavity, a desiccant 72 disposed above the mesh plate 71, and an activated carbon adsorption plate 73 disposed above the desiccant 72. The mesh plate 71 supports the desiccant 72 and the activated carbon adsorption plate 73, allowing the exhaust gas to pass through the mesh plate 71 after entering the cavity. The desiccant 72 dries the exhaust gas first, absorbing the moisture in the exhaust gas, and then the activated carbon adsorption plate 73 further absorbs and treats the remaining harmful substances in the exhaust gas, thereby improving the treatment effect of the exhaust gas.

[0058] like Figures 1 to 10 As shown, a waste gas treatment process for copper foil production includes the following steps:

[0059] Step 1: A certain amount of absorbent is injected into the upper chamber 11 through the injection tube 13, and the absorbent accumulates above the partition platform 20.

[0060] Step 2: Part of the absorbent liquid passes through the first channel 21 and the second channel 31 and is injected into the lower chamber 12, where it is received by the support plate 15.

[0061] Step 3: The absorbent liquid in the lower chamber 12 enters the vertical pipe 40 through the lower notch 42. The motor 91 and the rotating shaft 95 drive the gear ring 92 to rotate, which in turn drives the gear 94 to rotate. This causes the reciprocating screw 93 in the vertical pipe 40 to push the sealing plug 43 to move up and down. As the sealing plug 43 rises, it sends the absorbent liquid back to the upper chamber 11. As the sealing plug 43 descends, it pushes the absorbent liquid into the spray pipe 61 of the spray assembly 60, and the nozzle 62 sprays it into the lower chamber 12.

[0062] Step 4: As the absorbent liquid on the support plate 15 gradually increases and its weight gradually increases, the support plate 15 is compressed and descends within the lower chamber 12. The traction rope 51 in the traction assembly 50 pulls the connecting plate 32, causing the connecting plate 32, along with the adjusting plate 30, to rotate outside the mounting shaft 22. This causes the first through groove 21 and the second through groove 31 to gradually misalign, reducing the communication area between them. This decreases the downward flow rate of the absorbent liquid in the upper chamber 11, making the rate at which the absorbent liquid enters the lower chamber 12 less than the rate at which it is returned to the upper chamber 11 by the sealing plug 43. Consequently, the absorbent liquid in the upper chamber 11 gradually increases, and the absorbent liquid in the lower chamber 12 gradually decreases. As the absorbent liquid in the lower chamber 12 decreases, the torsion spring 23 pushes the connecting plate 32 and the adjusting plate 30 to gradually rotate and reset, so that the first through groove 21 and the second through groove 31 gradually align and increase the communication area, thereby increasing the rate at which the absorbent liquid flows into the lower chamber 12. This makes the rate at which the absorbent liquid enters the lower chamber 12 equal to or even greater than the rate at which it returns to the upper chamber 11. In this way, the capacity of the absorbent liquid in the upper chamber 11 and the lower chamber 12 is cyclically adjusted, and finally the return flow rate of the absorbent liquid in the upper chamber 11 and the increase in the absorbent liquid in the lower chamber 12 are made approximately equal, so as to ensure that the storage of absorbent liquid in the upper chamber 11 and the lower chamber 12 always maintain a relative balance.

[0063] Step 5: The exhaust gas is introduced into the lower chamber 12 through the air inlet pipe 14. The absorbent liquid sprayed by the spray assembly 60 sprays the exhaust gas. Then the exhaust gas rises and passes through the first channel 21 and the second channel 31 into the upper chamber 11. It is then washed by the absorbent liquid accumulated above the partition platform 20, thus completing the spray absorption and water washing absorption of the exhaust gas.

[0064] refer to Figure 2 , Figure 5 as well as Figure 10 Each mesh plate 71 has a vertical rod 711 fixed at its bottom. A baffle 712 slides on the vertical rod 711 and is located inside the slot 83. A limiting plate 714 is fixedly installed at the bottom of the vertical rod 711 and located below the baffle 712 to limit the sliding of the baffle 712 on the vertical rod 711, so that the baffle 712 can stay inside the slot 83. Each vertical tube 40 has a through hole 44 at its top. A push rod 431 that matches the through hole 44 is fixed at the top of the sealing plug 43.

[0065] The baffle 712 seals the trough 83, causing the waste gas to accumulate inside the upper chamber 11 after water washing. As the sealing plug 43 rises within the vertical pipe 40, the push rod 431 passes through the through hole 44, pushing the baffle 712 in the trough 83 above the vertical pipe 40 to slide along the vertical rod 711 into the cavity, opening the trough 83 and connecting it to the upper chamber 11, allowing the waste gas to enter the cavity for filtration and discharge. As the sealing plug 43 descends, it drives the push rod 431 down into the vertical pipe 40, and the baffle 712 slides down along the vertical rod 711 under gravity, falling back into the trough 83 and sealing the cavity again. Stop the emission of exhaust gas. When the sealing plugs 43 in other adjacent vertical pipes 40 rise, open the corresponding cavities above them to resume exhaust gas emission. This avoids excessive differences in exhaust gas flow rates in different cavities due to simultaneous exhaust gas emission from multiple cavities, which would result in low utilization rates of activated carbon adsorption plates 73 in some areas. This allows the exhaust gas to be emitted intermittently and sequentially from different cavities in a more concentrated manner, effectively improving the utilization rate of activated carbon adsorption plates 73. This ensures that the usage frequency of activated carbon adsorption plates 73 in different areas is more even, and the utilization rate can be maximized, giving full play to the role of activated carbon adsorption plates 73 in each area.

[0066] A spring 713 is fixed to the bottom of the mesh plate 71. The bottom end of the spring 713 is fixed to the top of the baffle 712. The spring 713 provides elastic support to the baffle 712, so that the baffle 712 is not easy to slide upward along the vertical rod 711 and leave the slot 83 when it is not pushed by the push rod 431.

[0067] refer to Figure 2 The sealing plugs 43 inside the multiple vertical pipes 40 have different heights and are evenly distributed along the height direction of the vertical pipes 40. This allows the multiple sealing plugs 43 to reach the bottom or top of the vertical pipes 40 one by one, without the situation where multiple sealing plugs 43 arrive at the same time. As a result, the spray components 60 on the multiple vertical pipes 40 can spray the absorbent liquid in sequence, and the empty troughs 83 above open in sequence, so that the multiple spray components 60 can spray the absorbent liquid continuously. The multiple empty troughs 83 open continuously, thus making the spraying and emission of exhaust gas sustainable.

[0068] refer to Figure 2A drain pipe 17 is inserted into the bottom of the treatment tank 10, and a connecting pipe 151 is inserted into the middle of the support plate 15. The bottom end of the connecting pipe 151 is slidably connected to the inside of the drain pipe 17, and a sealing ring 18 is provided between the top end of the drain pipe 17 and the connecting pipe 151 to form a seal between the drain pipe 17 and the connecting pipe 151, preventing the absorbent from leaking between the drain pipe 17 and the connecting pipe 151. A solenoid valve 152 is provided on the drain pipe 17 located below the treatment tank 10. Adjusting the solenoid valve 152 can close the drain pipe 17, so that the absorbent in the support plate 15 and the connecting pipe 151 will not be lost during waste gas treatment. Alternatively, the solenoid valve 152 can be adjusted to open, so that the absorbent above the support plate 15 can be discharged through the drain pipe 17, which facilitates the replacement of the absorbent.

[0069] To prevent the nozzle 62 from clogging, a filter screen is installed inside the lower notch 42 to filter particulate impurities remaining in the absorbent liquid after spraying and washing exhaust gas, preventing impurities from entering the interior of the vertical pipe 40 and causing clogging of the spray pipe 61 and nozzle 62.

[0070] Beneficial effects: Combining spray-type water washing with through-flow water washing allows for continuous spraying of waste gas, and the sprayed waste gas circulates within the absorbent liquid, resulting in a more comprehensive and thorough washing of the waste gas. This effectively reacts and absorbs soluble harmful and toxic substances in the waste gas, and effectively avoids direct contact between the inlet pipe 14 and the absorbent liquid, preventing waste gas from being directly discharged into the absorbent liquid and thus effectively preventing backflow of the absorbent liquid. This enhances the performance of the equipment and allows for the sequential and concentrated discharge of waste gas from different areas, ensuring that the activated carbon adsorption plates 73 in different areas maintain equal treatment effects on the waste gas and maximize the absorption efficiency of harmful substances, thereby improving the utilization rate of the activated carbon adsorption plates 73.

[0071] In the above embodiment, the exhaust gas is continuously transported into the treatment tank (10) after flowing through the air inlet pipe 14. If the flow speed of the exhaust gas is too high, it will easily affect the treatment effect of the exhaust gas.

[0072] like Figures 11 to 13The second embodiment of the present invention is shown. The air-blocking assembly 1a is connected to the air intake pipe 14. The air-blocking assembly 1a includes a pipe body 1b, a housing 1c, a pipe body 1d, a pipe body 1e, a support 1f, a telescopic rod 1g, an elastic part 1h, a piston 1i, and a deceleration structure. The pipe body 1b is connected to the air intake pipe 14. The housing 1c is connected to the end of the pipe body 1b away from the air intake pipe 14. The pipe body 1d is connected to the housing 1c, and the pipe body 1e is connected to the pipe body 1d. The pipe body 1e, pipe body 1d, housing 1c, pipe body 1b, and air intake pipe 14 are sequentially connected. Exhaust gas enters through the pipe body 1e, flows through the pipe body 1e, pipe body 1d, housing 1c, pipe body 1b, and air intake pipe 14, and enters the treatment tank 10. The support 1f is connected inside the pipe body 1d, and the piston 1i is inserted into the pipe body 1b. Inside d, the telescopic rod 1g connects the support part 1f and the piston 1i. The telescopic rod 1g can guide the piston 1i. The elastic part 1h connects the piston 1i and the support part 1f. The elastic part 1h is a spring and is used to apply an elastic pulling force to the piston 1i to reset it. After the exhaust gas enters the pipe body 2 1d through the pipe body 3 1e, the air pressure in the pipe body 2 1d gradually increases to push the piston 1i toward the box 1c and stretch the elastic part 1h. After the piston 1i is separated from the pipe body 2 1d, the exhaust gas in the pipe body 2 1d quickly enters the box 1c to make the air pressure in the pipe body 2 1d decrease rapidly. At this time, under the pull of the elastic part 1h, the piston 1i can extend into the pipe body 2 1d again to wait for the next release of exhaust gas in the pipe body 2 1d, thereby realizing the intermittent release of exhaust gas.

[0073] The deceleration structure includes an air baffle 1j, an elastic part 1k, an air baffle 1m, and an elastic part 1n. Each air baffle 1j, elastic part 1k, air baffle 1m, and elastic part 1n is configured in pairs. Both air baffles 1j are rotatably connected inside the housing 1c. A gap is left between the ends of the two air baffles 1j that are close to each other. The two air baffles 1j are arranged in a V-shape, and the ends of the two air baffles 1j that are far apart from each other are arc-shaped and contact the inner walls of the housing 1c on both sides. Two elastic parts 1k are configured, each connected to one of the two air baffles 1j, and the other end of each elastic part 1k is connected to the housing 1c. The two air baffles 1m are arranged in a V-shape, and the opening directions of the two air baffles 1m and the two air baffles 1j are the same. Both air baffles 1m are rotatably connected to the housing. Inside 1c, the ends of the two air-blocking parts 1m that are close to each other are arc-shaped and in contact with each other. The ends of the two air-blocking parts 1m that are far apart from each other are separated from the inner wall of the box 1c. The two elastic parts 1n are respectively connected to the two air-blocking parts 1m, and the other ends of the two elastic parts 1n are connected to the box 1c. When the exhaust gas in the pipe 1d quickly enters the box 1c, the exhaust gas collides with the two air-blocking parts 1j and the two air-blocking parts 1m in sequence, causing the two air-blocking parts 1j to flip in the opposite direction and stretch the elastic parts 1k, and the two air-blocking parts 1m to flip in the opposite direction and stretch the elastic parts 1n. This consumes the flow force of the exhaust gas, thereby slowing down the exhaust gas entering the treatment tank 10, reducing the flow speed of the exhaust gas in the treatment tank 10, and enhancing the treatment effect of the exhaust gas.

[0074] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A waste gas treatment device for copper foil production, characterized by comprising: The utility model relates to a treatment tank (10) internally provided with a partition table (20), the upper chamber (11) is formed with for injecting absorption liquid above the partition table (20), the lower chamber (12) is formed with for waste gas purification work below the partition table (20), a plurality of first through grooves (21) are opened on the partition table (20) and pass through up and down, Liquid injection pipe (13) is set up on the treatment tank (10) and is communicated with the upper chamber (11), and the liquid injection pipe (13) is used to inject absorption liquid in the upper chamber (11), Air inlet pipe (14) is set up on the treatment tank (10) and is communicated with the lower chamber (12), and the air inlet pipe (14) is used to inject the waste gas to be purified into the lower chamber (12), The load plate (15) is arranged at the bottom of the lower chamber (12), and can slide in the height direction of the treatment tank (10) with single degree of freedom, and is used to support and temporarily store absorption liquid, The adjusting plate (30) is rotatably arranged at the bottom of the partition table (20), a plurality of second through grooves (31) are opened on the adjusting plate (30), and the second through grooves (31) can be aligned with the first through grooves (21) up and down and form a passage, A plurality of traction assemblies (50) are arranged in the lower chamber (12) and used to pull the adjusting plate (30) to rotate when the load plate (15) descends, so as to adjust the size of the passage formed by the second through grooves (31) and the first through grooves (21), A rotating component is arranged between the partition table (20) and the adjusting plate (30) and used to push the adjusting plate (30) to rotate and reset, A plurality of vertical pipes (40) are annularly and uniformly arranged on the partition table (20), the top end of the vertical pipe (40) extends to the top of the upper chamber (11), the bottom end of the vertical pipe (40) penetrates and extends below the load plate (15), an upper notch (41) located above the partition table (20) and a lower notch (42) close to the top of the load plate (15) are respectively formed in the vertical pipe (40), and a sealing plug (43) is slidably arranged in the vertical pipe (40) up and down, used to balance the absorption liquid in the upper chamber (11) and the lower chamber (12) through the upper notch (41) and the lower notch (42), A spraying assembly (60) is arranged in the lower chamber (12) and communicated with the bottom end of the vertical pipe (40), used to spray absorption liquid into the lower chamber (12) after the sealing plug (43) descends to the lower notch (42). The bottom of the adjusting plate (30) is fixed with a connecting disc (32), the traction assembly (50) comprises a traction rope (51) fixed at the top of the load plate (15), the bottom of the partition table (20) is fixed with a guide ring (52), the top end of the traction rope (51) penetrates the guide ring (52) and is fixed on the side of the connecting disc (32) away from the guide ring (52).

2. The exhaust gas treatment device for copper foil production according to claim 1, characterized by, The bottom of the partition table (20) is fixed with a mounting shaft (22), the adjusting plate (30) is rotatably arranged on the mounting shaft (22), and the rotating component is a torsion spring (23) sleeved outside the mounting shaft (22), and the two ends of the torsion spring (23) are respectively fixed on the mounting shaft (22) and the adjusting plate (30).

3. The exhaust gas treatment device for copper foil production according to claim 1, characterized by, ​ 4. The exhaust gas treatment device for copper foil production according to claim 1, characterized by, The spray assembly (60) comprises a spray pipe (61) plugged at the bottom end of the vertical pipe (40), the top end of the spray pipe (61) is fixed at the bottom of the partition table (20) through the bearing plate (15), and a plurality of spray heads (62) are arranged on the spray pipe (61) and located below the partition table (20).

5. The exhaust gas treatment device for copper foil production according to claim 1, characterized by, The inside of the treatment tank (10) is fixed with a support plate (80) located above the vertical pipe (40), the top of the support plate (80) is fixed with a sleeve (81), a plurality of annularly distributed partition plates (82) are arranged between the sleeve (81) and the treatment tank (10), a cavity is formed between adjacent two partition plates (82), the filter assembly (70) is arranged in the cavity, a plurality of annularly distributed air slots (83) are arranged in the inside of the support plate (80), and the plurality of air slots (83) are arranged above the plurality of vertical pipes (40) respectively.

6. The exhaust gas treatment device for copper foil production according to claim 5, characterized by, The filter assembly (70) comprises a mesh plate (71) arranged in the cavity, a drying agent (72) is arranged above the mesh plate (71), and an activated carbon adsorption plate (73) is arranged above the drying agent (72).

7. The exhaust gas treatment device for copper foil production according to claim 6, characterized by, The bottom of each mesh plate (71) is fixed with a vertical rod (711), the outside of the vertical rod (711) is slidably provided with a baffle (712), the baffle (712) is located in the air slot (83), the bottom end of the vertical rod (711) is fixedly provided with a limiting plate (714) located below the baffle (712), the bottom of the mesh plate (71) is fixed with a spring (713), the bottom end of the spring (713) is fixed to the top of the baffle (712), the top end of each vertical pipe (40) is provided with a through hole (44), and the top of the sealing plug (43) is fixed with a push rod (431) matched with the through hole (44).

8. The exhaust gas treatment device for copper foil production according to claim 5, characterized by, One side of the support plate (80) is provided with a driving mechanism (90) for driving the sealing plug (43) to reciprocate up and down in the vertical pipe (40), the driving mechanism (90) comprises a motor (91) mounted above the treatment tank (10), the output end of the motor (91) is fixed with a rotating shaft (95) rotating in the support plate (80), the bottom end of the rotating shaft (95) is provided with a gear ring (92) located below the support plate (80), the inside of each vertical pipe (40) is rotatably connected with a reciprocating screw (93), and the sealing plug (43) is arranged outside the reciprocating screw (93), and the top end of each reciprocating screw (93) is fixed with a gear (94) engaged with the gear ring (92).

9. The exhaust gas treatment device for copper foil production according to claim 1, characterized by, The air resistance assembly (1a) comprises a box (1c), a pipe body two (1d), an extension rod (1g), an elastic part one (1h), a piston (1i) and a speed reduction structure, the box (1c) is connected with the air inlet pipe (14), the pipe body two (1d) is connected with the box (1c), the piston (1i) is inserted in the pipe body two (1d), the extension rod (1g) and the elastic part one (1h) are both connected between the pipe body two (1d) and the piston (1i), the exhaust gas is injected into the pipe body two (1d), the piston (1i) is separated or inserted by the change of the air pressure in the pipe body two (1d), so that the exhaust gas is transported at intervals, and the speed reduction structure is connected with the box (1c) and used for reducing the speed of the exhaust gas entering into the box (1c) through the pipe body two (1d).

10. A waste gas treatment process for copper foil production, characterized by, The exhaust gas treatment device for copper foil production according to any one of claims 1-9 comprises the following steps: Step one: a certain amount of absorption liquid is injected into the upper chamber (11) through the liquid injection pipe (13), and the absorption liquid is gathered above the partition table (20); Step two: part of the absorption liquid is injected into the lower chamber (12) through the first through slot (21) and the second through slot (31), and the absorption liquid is supported by the supporting plate (15); Step three: part of the absorption liquid in the lower chamber (12) enters the vertical pipe (40), and is sent back to the upper chamber (11) or sprayed into the spraying assembly (60) by the sealing plug (43); Step four: the adjustment plate (30) is rotated by the traction assembly (50) and the rotating part, and the communication area of the first through slot (21) and the second through slot (31) is adjusted; Step five: the exhaust gas is introduced into the lower chamber (12) through the air inlet pipe (14), the absorption liquid sprayed by the spraying assembly (60) is sprayed on the exhaust gas, and then the exhaust gas rises and passes through the first through slot (21) and the second through slot (31) into the upper chamber (11), and finally the exhaust gas is treated by passing through the absorption liquid accumulated above the partition table (20).

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