An absorption chlorine reuse device for acid etching of copper

Abstract

The present invention discloses a chlorine absorption and recycling device for acidic copper etching, which relates to the technical field of chlorine recovery. It includes a tower body and a uniform distribution component. An air inlet pipe is arranged on one side of the tower body, and the uniform distribution component is arranged at one end of the air inlet pipe located inside the tower body. The uniform distribution component includes an outer cover, a uniform distribution cavity, an air outlet, a liquid collection tank, a liquid outlet, a drainage port, a uniform distribution impeller and a water isolation film. One end of the air inlet pipe located inside the tower body is connected to the outer cover, and a uniform distribution cavity is opened inside the outer cover. When the present invention is in use, it can carry out gas-liquid separation on the waste gas sent into the tower body, and uniformly distribute the waste gas during the separation process to increase the contact surface between the waste gas and the absorption liquid, so as to fully absorb chlorine. Moreover, when dehumidifying the tail gas before discharging the tail gas after absorbing chlorine, it can detect the chlorine content in the tail gas. If there is too much residual chlorine, the tail gas can be refluxed for reabsorption, and the absorption liquid can be treated synchronously to improve the absorption efficiency of the absorption liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of chlorine recovery, and specifically to an absorption chlorine recycling device for acidic copper etching. Background Art

[0002] During the process of acidic copper etching, a large amount of waste liquid and waste gas are usually generated, and there is a certain amount of chlorine in the waste gas, which is caused by the reaction of the chlorides used in the etching solution with copper. For environmental protection and safety, it is necessary to treat these chlorine gases before discharging them.

[0003] When the existing chlorine recycling device is in use, the uneven distribution of the waste gas in the device may cause the chlorine gas not to be fully absorbed in the absorption tower, resulting in a relatively high concentration of chlorine gas in the treated tail gas and failing to meet the environmental protection discharge standards.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an absorption chlorine recycling device for acidic copper etching is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an absorption chlorine recycling device for acidic copper etching to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: an absorption chlorine recycling device for acidic copper etching, including a tower body and a uniform distribution component. An air inlet pipe is arranged on one side of the tower body, and the uniform distribution component is arranged at one end of the air inlet pipe located inside the tower body. The uniform distribution component includes an outer cover, a uniform distribution cavity, an air outlet, a liquid collection tank, a liquid outlet, a liquid discharge port, a uniform distribution impeller, and a water isolation film. One end of the air inlet pipe located inside the tower body is connected to the outer cover, and a uniform distribution cavity is opened inside the outer cover. Air outlets are symmetrically opened around the uniform distribution cavity. A liquid collection tank is opened on one side of the uniform distribution cavity, and liquid outlets are symmetrically opened on one side of the liquid collection tank. A liquid discharge port is arranged on one side of the liquid outlet. A uniform distribution impeller is rotatably connected inside the uniform distribution cavity, and a water isolation film is connected to the side wall of the uniform distribution cavity.

[0007] Further, two coil pipes are arranged inside the tower body, and spray nozzles are opened on one side of the coil pipes. A drain pipe is connected to the lower end of the tower body.

[0008] Further, an installation groove is opened on the upper side of the tower body, and an installation frame is snap-fitted and slidably connected inside the installation groove. A dehumidification plate is connected inside the installation frame, and a chlorine gas detector is arranged inside the dehumidification plate. A weighing scale is arranged at the connection between the installation frame and the dehumidification plate.

[0009] Further, an exhaust pipe is connected to the upper end of the tower body, and a three-way valve is arranged above the exhaust pipe. A return air pipe is arranged on one side of the three-way valve, and the return air pipe is connected to the air inlet pipe through a one-way valve.

[0010] Furthermore, a liquid storage tank is arranged below the drain pipe, and a partition board is arranged inside the liquid storage tank. An overflow port is opened in the upper part of the partition board, and the partition board divides the interior of the liquid storage tank into a treatment pool and a liquid storage pool.

[0011] Furthermore, through openings are symmetrically opened on both sides of the treatment pool, and a backing plate is arranged inside the treatment pool. Water passing holes are arranged on the surface of the backing plate.

[0012] Furthermore, stay ropes are symmetrically connected to the four corners of the backing plate, and the other ends of the stay ropes are connected to a winding wheel. A motor is connected to one side of the winding wheel.

[0013] Furthermore, a bottom frame is arranged above the backing plate, and support plates are symmetrically connected to the four corners inside the bottom frame. A buffer spring is connected above the support plate, and a pressure sensor is arranged between the support plate and the buffer spring.

[0014] Furthermore, the other end of the buffer spring is connected to a sieve plate, and the sieve plate is elastically connected to the support plate through the buffer spring. The sieve plate is in snap-fit sliding connection with the bottom frame.

[0015] Furthermore, a water suction pipe is arranged inside the liquid storage pool, and the upper end of the water suction pipe is connected to a water pump. A stirring rod is arranged on one side of the liquid storage pool, and a mixing impeller is connected to the upper end of the stirring rod. A feeding pipe is arranged above the stirring rod in the liquid storage pool, and the water pump is communicated with a coil pipe through a pipeline.

[0016] The present invention provides a chlorine absorption and recycling device for acidic copper etching, having the following beneficial effects:

[0017] 1. When the present invention is in use, when waste gas is sent into the tower body from the air inlet pipe, the waste gas will first enter the uniform distribution cavity and drive the uniform distribution impeller to rotate in the uniform distribution cavity. After the waste gas is dispersed, it is sent out of the outer cover from the air outlet, so that it is uniformly distributed in the tower body to increase the contact surface between the waste gas and the absorption liquid, thereby fully absorbing chlorine gas. When the waste gas is dispersed, the water vapor mixed in the waste gas will adhere to the uniform distribution impeller and be thrown out of the uniform distribution impeller onto the water isolation film under the action of centrifugal force. The water vapor converges into water droplets on the water isolation film and flows into the liquid collection tank, and then leaves the outer cover through the liquid outlet from the liquid discharge port, completing gas-liquid separation. In summary, when in use, the waste gas sent into the tower body can be subjected to gas-liquid separation, and the waste gas is uniformly distributed during the separation process to increase the contact surface between the waste gas and the absorption liquid, thereby fully absorbing chlorine gas.

[0018] 2. When the waste gas in the present invention rises uniformly in the tower body, the water pump pumps out the absorbent liquid in the liquid storage tank through the water suction pipe and sends it into the coil pipe, atomizes and sprays the absorbent liquid through the spray nozzle into the tower body to absorb the chlorine gas in the waste gas. The tail gas after absorption is dehumidified by the dehumidification plate and then leaves the tower body through the exhaust pipe. When dehumidifying the tail gas, the chlorine gas detector in the dehumidification plate can detect the chlorine gas content in the tail gas. If the chlorine gas content in the tail gas exceeds the standard, the three-way valve will introduce the tail gas into the return pipe. When the waste gas flows in the intake pipe, a negative pressure will be formed at the connection between the return pipe and the intake pipe, so as to suck the excessive tail gas in the return pipe into the intake pipe, making the tail gas enter the tower body again for absorption treatment until the chlorine gas detector detects that the chlorine gas content in the tail gas reaches the standard, and then the three-way valve will export the tail gas from the exhaust pipe. The one-way valve at the connection between the return pipe and the intake pipe can prevent the waste gas from entering the return pipe. The weighing scale in the installation frame can detect the weight of the dehumidification plate. When the weight of the dehumidification plate reaches the predetermined value, it means that the dehumidification plate has reached the absorption limit. At this time, the installation frame can be taken out of the installation slot and the dehumidification plate can be processed and replaced to ensure the dehumidification efficiency of the dehumidification plate. In summary, when in use, when dehumidifying the tail gas before discharging the tail gas after absorbing chlorine gas, the chlorine gas content in the tail gas can be detected. If there is too much residual chlorine gas, the tail gas can be refluxed and absorbed again. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a half-sectional three-dimensional exploded structure schematic diagram of the outer cover of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention;

[0020] Figure 2 is a half-sectional three-dimensional exploded front view structure schematic diagram of the tower body of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention;

[0021] Figure 3 is a half-sectional three-dimensional exploded bottom view structure schematic diagram of the tower body of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention;

[0022] Figure 4 is a sectional front view structure schematic diagram of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention;

[0023] Figure 5 is a sectional three-dimensional structure schematic diagram of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention;

[0024] Figure 6 is an overall three-dimensional structure schematic diagram of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention;

[0025] Figure 7 is a half-sectional three-dimensional exploded structure schematic diagram of the liquid storage tank of an apparatus for recycling chlorine gas absorption used in acid etching of copper according to the present invention.

[0026] In the figure: 1. Tower body; 2. Inlet pipe; 3. Uniform distribution component; 301. Outer cover; 302. Uniform distribution chamber; 303. Air outlet; 304. Liquid collecting tank; 305. Liquid outlet; 306. Drainage port; 307. Uniform distribution impeller; 308. Water isolation film; 4. Coiled pipe; 5. Spray nozzle; 6. Drain pipe; 7. Installation groove; 8. Installation frame; 9. Dehumidification plate; 10. Exhaust pipe; 11. Three-way valve; 12. Return air pipe; 13. Liquid storage tank; 14. Partition board; 15. Overflow port; 16. Treatment tank; 17. Liquid storage pond; 18. Through port; 19. Pad plate; 20. Pulling rope; 21. Take-up wheel; 22. Motor; 23. Bottom frame; 24. Support plate; 25. Buffer spring; 26. Sieve plate; 27. Water suction pipe; 28. Water pump; 29. Stirring rod; 30. Mixing impeller; 31. Feeding pipe. Specific implementation mode

[0027] Please refer to Figures 1 to 7 , the present invention provides a technical solution: an absorption chlorine recycling device for acid etching of copper, including a tower body 1 and a uniform distribution component 3. An inlet pipe 2 is arranged on one side of the tower body 1. The uniform distribution component 3 is arranged at one end of the inlet pipe 2 located inside the tower body 1. The uniform distribution component 3 includes an outer cover 301, a uniform distribution chamber 302, an air outlet 303, a liquid collecting tank 304, a liquid outlet 305, a drainage port 306, a uniform distribution impeller 307 and a water isolation film 308. One end of the inlet pipe 2 located inside the tower body 1 is connected to the outer cover 301, and a uniform distribution chamber 302 is opened inside the outer cover 301. Air outlets 303 are symmetrically opened around the uniform distribution chamber 302. A liquid collecting tank 304 is opened on one side of the uniform distribution chamber 302, and liquid outlets 305 are symmetrically opened on one side of the liquid collecting tank 304. A drainage port 306 is arranged on one side of the liquid outlet 305. A uniform distribution impeller 307 is rotatably connected inside the uniform distribution chamber 302, and a water isolation film 308 is connected to the side wall of the uniform distribution chamber 302.

[0028] Please refer to Figures 1 to 6 , an installation groove 7 is opened on the upper side of the tower body 1, and an installation frame 8 is snap-fitted and slidably connected inside the installation groove 7. A dehumidification plate 9 is connected inside the installation frame 8, and a chlorine detector is arranged inside the dehumidification plate 9. A weighing meter is arranged at the connection between the installation frame 8 and the dehumidification plate 9. An exhaust pipe 10 is connected to the upper end of the tower body 1, and a three-way valve 11 is arranged above the exhaust pipe 10. A return air pipe 12 is arranged on one side of the three-way valve 11, and the return air pipe 12 is connected to the inlet pipe 2 through a one-way valve;

[0029] The specific operation is as follows. When in use, when the waste gas is sent into the tower body 1 from the air inlet pipe 2, the waste gas will first enter the uniform distribution cavity 302, and drive the uniform distribution impeller 307 to rotate in the uniform distribution cavity 302. After the waste gas is dispersed, it is sent out of the outer cover 301 from the air outlet 303, so that it is uniformly distributed in the tower body 1 to increase the contact surface between the waste gas and the absorption liquid, thereby fully absorbing chlorine gas. When the waste gas is dispersed, the water vapor mixed in the waste gas will adhere to the uniform distribution impeller 307 and be thrown out of the uniform distribution impeller 307 onto the water separation membrane 308 under the action of centrifugal force. The water vapor converges into water droplets on the water separation membrane 308 and flows into the liquid collection tank 304, and then leaves the outer cover 301 from the liquid outlet 305 through the liquid discharge port 306 to complete gas-liquid separation. In summary, when in use, the waste gas sent into the tower body 1 can be subjected to gas-liquid separation, and the waste gas is uniformly distributed during the separation process to increase the contact surface between the waste gas and the absorption liquid, thereby fully absorbing chlorine gas. When the waste gas is uniformly distributed and rises in the tower body 1, the water pump 28 pumps out the absorption liquid in the storage tank 17 through the water suction pipe 27 and sends it into the coil pipe 4, and the absorption liquid is atomized and sprayed into the tower body 1 through the spray nozzle 5 to absorb the chlorine gas in the waste gas. The absorbed tail gas is dehumidified by the dehumidification plate 9 and then leaves the tower body 1 from the exhaust pipe 10. When dehumidifying the tail gas, the chlorine gas detector in the dehumidification plate 9 can detect the chlorine gas content in the tail gas. If the chlorine gas contained in the tail gas exceeds the standard, the three-way valve 11 will introduce the tail gas into the return air pipe 12. When the waste gas flows in the air inlet pipe 2, a negative pressure will be formed at the connection between the return air pipe 12 and the air inlet pipe 2, so that the excessive tail gas in the return air pipe 12 is sucked into the air inlet pipe 2, and the tail gas enters the tower body 1 again for absorption treatment until the chlorine gas detector detects that the chlorine gas content in the tail gas reaches the standard, and then the three-way valve 11 exports the tail gas from the exhaust pipe 10. The one-way valve at the connection between the return air pipe 12 and the air inlet pipe 2 can prevent the waste gas from entering the return air pipe 12. The weight meter in the installation frame 8 can detect the weight of the dehumidification plate 9. When the weight of the dehumidification plate 9 reaches a predetermined value, it means that the dehumidification plate 9 has reached the absorption limit. At this time, the installation frame 8 can be taken out of the installation groove 7 and the dehumidification plate 9 can be processed and replaced to ensure the dehumidification efficiency of the dehumidification plate 9. In summary, when in use, when dehumidifying the tail gas before discharging the tail gas after absorbing chlorine gas, the chlorine gas content in the tail gas can be detected. If there is too much residual chlorine gas, the tail gas can be refluxed and absorbed again.

[0030] Please refer to Figures 3 to 7, a liquid storage tank 13 is arranged below the drain pipe 6, and a partition plate 14 is arranged in the liquid storage tank 13. An overflow port 15 is opened in the upper part of the partition plate 14, and the partition plate 14 divides the interior of the liquid storage tank 13 into a treatment tank 16 and a liquid storage tank 17. Through holes 18 are symmetrically opened on both sides of the treatment tank 16, and a backing plate 19 is arranged in the treatment tank 16. Water passing holes are arranged on the surface of the backing plate 19. Pulling ropes 20 are symmetrically connected to the four corners of the backing plate 19, and the other ends of the pulling ropes 20 are connected to a winding wheel 21. A motor 22 is connected to one side of the winding wheel 21. A bottom frame 23 is arranged above the backing plate 19, and support plates 24 are symmetrically connected to the four corners inside the bottom frame 23. A buffer spring 25 is connected above the support plates 24, and a pressure sensor is arranged between the support plates 24 and the buffer spring 25. The other end of the buffer spring 25 is connected to a sieve plate 26, and the sieve plate 26 is elastically connected to the support plates 24 through the buffer spring 25. The sieve plate 26 is engaged and slidably connected to the bottom frame 23. A water suction pipe 27 is arranged in the liquid storage tank 17, and the upper end of the water suction pipe 27 is connected to a water pump 28. A stirring rod 29 is arranged on one side of the liquid storage tank 17, and a mixing impeller 30 is connected to the upper end of the stirring rod 29. A feeding pipe 31 is arranged above the stirring rod 29 in the liquid storage tank 17. The water pump 28 is connected to the coil pipe 4 through a pipeline;

[0031] The specific operation is as follows. After the absorption liquid absorbs the chlorine in the waste gas, the absorption liquid will descend in the tower body 1 and enter the treatment tank 16 area in the liquid storage tank 13 through the drain pipe 6 and stand still therein. At the same time, a treatment liquid is added into the treatment tank 16 to restore the absorption capacity of the absorption liquid for chlorine. The solids generated during the treatment process will precipitate together with the solids generated when the absorption liquid absorbs chlorine and accumulate on the sieve plate 26, causing the sieve plate 26 to descend in the bottom frame 23 and compress the buffer spring 25. While the backing plate 19 provides support for the buffer spring 25, the pressure sensor arranged thereon detects the pressure received by the buffer spring 25. When the pressure value reaches a predetermined value, the motor 22 drives the winding wheel 21 to rotate, winds the pulling rope 20, and thus raises the bottom frame 23 in the treatment tank 16 to the through hole 18 through the backing plate 19, facilitating the removal of the bottom frame 23 and the cleaning of the sediment. Then, the bottom frame 23 is placed back on the backing plate 19 from the through hole 18, and the motor 22 rotates in the reverse direction to send the backing plate 19 back to the bottom of the treatment tank 16. When the liquid level of the treated absorption liquid in the treatment tank 16 reaches the overflow port 15, the treatment liquid can flow into the liquid storage tank 17 for reuse. When the dehumidifying plate 9 detects that the chlorine content in the tail gas exceeds the standard, an alkali solution can be added into the liquid storage tank 17 from the feeding pipe 31 to increase the alkalinity of the treatment liquid, thereby enhancing the absorption capacity of the absorption liquid for chlorine. When adding the alkali solution, the falling alkali solution can drive the stirring rod 29 to rotate in the liquid storage tank 17 through the mixing impeller 30 to stir the absorption liquid to ensure that the alkali solution can be evenly mixed with the absorption liquid. In summary, during use, the absorption liquid can be processed synchronously to improve the absorption efficiency of the absorption liquid.

[0032] In summary, when the chlorine absorption and recycling device for acid copper etching is in use, first, when the waste gas is sent into the tower body 1 from the air inlet pipe 2, the waste gas will first enter the distribution cavity 302 and drive the distribution impeller 307 to rotate in the distribution cavity 302. After the waste gas is dispersed, it is sent out of the outer cover 301 from the air outlet 303, so that it is evenly distributed in the tower body 1 to increase the contact surface between the waste gas and the absorption liquid, thereby fully absorbing chlorine. When the waste gas is dispersed, the water vapor mixed in the waste gas will adhere to the distribution impeller 307 and be thrown out of the distribution impeller 307 onto the water-proof membrane 308 under the action of centrifugal force. The water vapor converges into water droplets on the water-proof membrane 308 and flows into the liquid collection tank 304, and then leaves the outer cover 301 through the liquid outlet 305 from the liquid discharge port 306 to complete gas-liquid separation. When the waste gas rises evenly in the tower body 1, the water pump 28 pumps out the absorption liquid in the storage tank 17 through the water suction pipe 27 and sends it into the coil pipe 4, and the absorption liquid is atomized and sprayed into the tower body 1 through the spray nozzle 5 to absorb the chlorine in the waste gas. The absorbed tail gas is dehumidified by the dehumidification plate 9 and then leaves the tower body 1 from the exhaust pipe 10. When dehumidifying the tail gas, the chlorine detector in the dehumidification plate 9 can detect the chlorine content in the tail gas. If the chlorine content in the tail gas exceeds the standard, the three-way valve 11 will introduce the tail gas into the return air pipe 12. When the waste gas flows in the air inlet pipe 2, a negative pressure will be formed at the connection between the return air pipe 12 and the air inlet pipe 2, so as to suck the excessive tail gas in the return air pipe 12 into the air inlet pipe 2, so that the tail gas enters the tower body 1 again for absorption treatment until the chlorine detector detects that the chlorine content in the tail gas reaches the standard, and then the three-way valve 11 exports the tail gas from the exhaust pipe 10. The one-way valve at the connection between the return air pipe 12 and the air inlet pipe 2 can prevent the waste gas from entering the return air pipe 12. The weighing meter in the mounting frame 8 can detect the weight of the dehumidification plate 9. When the weight of the dehumidification plate 9 reaches a predetermined value, it means that the dehumidification plate 9 has reached the absorption limit. At this time, the mounting frame 8 can be taken out of the mounting groove 7 and the dehumidification plate 9 can be processed and replaced to ensure the dehumidification efficiency of the dehumidification plate 9. After the absorption liquid absorbs the chlorine in the waste gas, the absorption liquid will drop in the tower body 1 and enter the treatment pool 16 area in the storage tank 13 through the drain pipe 6 and stand still therein. At the same time, a treatment liquid is added to the treatment pool 16 to restore the chlorine absorption capacity of the absorption liquid. The solids generated during the treatment process will precipitate and accumulate on the sieve plate 26 together with the solids generated when the absorption liquid absorbs chlorine, causing the sieve plate 26 to drop in the bottom frame 23 and compress the buffer spring 25. While the backing plate 19 provides support for the buffer spring 25, the pressure sensor provided thereon detects the pressure received by the buffer spring 25. When the pressure value reaches a predetermined value, the motor 22 drives the winding wheel 21 to rotate and winds up the pulling rope 20, so as to lift the bottom frame 23 in the treatment pool 16 to the through hole 18 through the backing plate 19, which is convenient for taking out the bottom frame 23 and cleaning the precipitate. Then the bottom frame 23 is returned to the backing plate 19 from the through hole 18, and the motor 22 runs in the reverse direction to send the backing plate 19 back to the bottom of the treatment pool 16.After the level of the treated absorption liquid in the treatment tank 16 reaches the overflow port 15, the treated liquid can flow into the liquid storage tank 17 for reuse. When the chlorine content in the tail gas detected by the dehumidification plate 9 exceeds the standard, alkali solution can be added to the liquid storage tank 17 from the feeding pipe 31 to increase the alkalinity of the treated liquid, thereby enhancing the absorption capacity of the absorption liquid for chlorine. When adding the alkali solution, the falling alkali solution can drive the stirring rod 29 to rotate in the liquid storage tank 17 through the mixing impeller 30 to stir the absorption liquid to ensure that the alkali solution can be evenly mixed with the absorption liquid.

[0033] The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. An absorption chlorine recycling device for acid etching of copper, characterized in that, It includes a tower body (1) and a uniform distribution component (3). An air inlet pipe (2) is provided on one side of the tower body (1). The uniform distribution component (3) is arranged at one end of the air inlet pipe (2) located inside the tower body (1). The uniform distribution component (3) includes an outer cover (301), a uniform distribution chamber (302), an air outlet (303), a liquid collection tank (304), a liquid outlet (305), a liquid discharge port (306), a uniform distribution impeller (307) and a water isolation film (308). One end of the air inlet pipe (2) located inside the tower body (1) is connected to the outer cover (301), and a uniform distribution chamber (302) is opened inside the outer cover (301). Air outlets (303) are symmetrically opened around the uniform distribution chamber (302). A liquid collection tank (304) is opened on one side of the uniform distribution chamber (302), and liquid outlets (305) are symmetrically opened on one side of the liquid collection tank (304). A liquid discharge port (306) is arranged on one side of the liquid outlet (305). A uniform distribution impeller (307) is rotatably connected inside the uniform distribution chamber (302), and a water isolation film (308) is connected to the side wall of the uniform distribution chamber (302).

2. The chlorine absorption and recycling device for acidic copper etching according to claim 1, characterized in that, Two coil pipes (4) are arranged inside the tower body (1), and spray nozzles (5) are opened on one side of the coil pipes (4). A drain pipe (6) is connected to the lower end of the tower body (1).

3. An apparatus for absorbing and recycling chlorine gas for acidic copper etching according to claim 1, characterized in that, An installation groove (7) is opened on the upper side of the tower body (1), and an installation frame (8) is snap-fitted and slidably connected inside the installation groove (7). A dehumidification plate (9) is connected inside the installation frame (8), and a chlorine detector is arranged inside the dehumidification plate (9). A weighing meter is arranged at the connection between the installation frame (8) and the dehumidification plate (9).

4. The chlorine absorption and recycling device for acidic copper etching according to claim 1, characterized in that, An exhaust pipe (10) is connected to the upper end of the tower body (1), and a three-way valve (11) is arranged above the exhaust pipe (10). A return air pipe (12) is arranged on one side of the three-way valve (11), and the return air pipe (12) is connected to the air inlet pipe (2) through a one-way valve.

5. An absorption chlorine reuse device for acid etching of copper according to claim 2, characterized in that, A liquid storage tank (13) is arranged below the drain pipe (6), and a partition plate (14) is arranged inside the liquid storage tank (13). An overflow port (15) is opened in the upper part of the partition plate (14), and the partition plate (14) divides the interior of the liquid storage tank (13) into a treatment pool (16) and a liquid storage pool (17).

6. The chlorine absorption and reuse device for acidic copper etching according to claim 5, characterized in that, Through openings (18) are symmetrically opened on both sides of the treatment pool (16), and a cushion plate (19) is arranged inside the treatment pool (16). Water passing holes are arranged on the surface of the cushion plate (19).

7. An apparatus for recycling chlorine absorption for acid etching of copper according to claim 6, characterized in that, Pulling ropes (20) are symmetrically connected to the four corners of the cushion plate (19), and the other ends of the pulling ropes (20) are connected to a winding wheel (21). A motor (22) is connected to one side of the winding wheel (21).

8. An apparatus for absorbing and recycling chlorine gas for acid etching of copper according to claim 7, characterized in that, A bottom frame (23) is arranged above the cushion plate (19), and support plates (24) are symmetrically connected to the four corners inside the bottom frame (23). A buffer spring (25) is connected above the support plates (24), and a pressure sensor is arranged between the support plates (24) and the buffer spring (25).

9. An absorption chlorine recycling device for acid etching of copper according to claim 8, characterized in that, The other end of the buffer spring (25) is connected to a sieve plate (26), and the sieve plate (26) is elastically connected to the support plates (24) through the buffer spring (25). The sieve plate (26) is snap-fitted and slidably connected to the bottom frame (23).

10. The chlorine absorption and reuse device for acid copper etching according to claim 5, characterized in that, A water suction pipe (27) is arranged in the liquid storage tank (17), and a water pump (28) is connected to the upper end of the water suction pipe (27). A stirring rod (29) is arranged on one side of the liquid storage tank (17), and a mixing impeller (30) is connected to the upper end of the stirring rod (29). A feeding pipe (31) is arranged above the stirring rod (29) in the liquid storage tank (17). The water pump (28) is communicated with the coil pipe (4) through a pipeline.

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