Electroplating waste gas terminal circulation treatment device

Abstract

The invention relates to the technical field of waste gas treatment, and discloses an electroplating waste gas terminal circulation treatment device which comprises a tower body, a servo motor is arranged at the top end of the tower body, the output end of the servo motor is sleeved with a first rotating shaft, a rotating connector is arranged on the outer side of the first rotating shaft, and a spraying disc is arranged on the outer side of the first rotating shaft; a planetary gear differential mechanism is arranged at the bottom end of the first rotating shaft, a water receiving disc is arranged on the outer side of the first rotating shaft, an umbrella-shaped gas-liquid separator is arranged on the outer side of the water receiving disc, and a plurality of sets of gas rising holes are formed in the outer side of the umbrella-shaped gas-liquid separator. According to the invention, shutdown caused by replacement or off-line regeneration of an adsorbent is avoided, the continuity and stability of a production process are ensured, pollutants are finally degraded through a new round of adsorption concentration and spray oxidation in the system, and an internal treatment closed loop is constructed by the design; and the dependence on a huge external incinerator is completely abandoned.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a terminal recycling treatment device for electroplating waste gas. Background Technology

[0002] Patent application CN116212537A includes a spray tower with a dry filter on one side, an activated carbon filter on the other side, and a catalytic combustion furnace on the same side. A chimney is connected to the front end of the catalytic combustion furnace. The dry filter includes a housing with a primary filter plate, a medium-efficiency filter plate, and a high-efficiency filter plate slidably connected inside. A first reciprocating screw, a second reciprocating screw, and a third reciprocating screw are respectively installed at one end of the housing and connected to the primary, medium, and high-efficiency filter plates. The advantage is that it allows for automatic movement of the primary, medium, and high-efficiency filter plates, enabling them to be automatically installed into or removed from the housing, thus improving replacement efficiency.

[0003] In the prior art including the aforementioned patents, commonly used electroplating waste gas terminal recycling treatment devices often have the following drawbacks: the waste gas passes through independent equipment such as a spray tower, dry filter, activated carbon filter, and catalytic combustion furnace in sequence, and the process is unidirectional and segmented; the activated carbon needs to be replaced as a whole after it is saturated; or the desorbed gas is introduced into the catalytic combustion furnace for offline incineration treatment, which has high energy consumption and discontinuous operation. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] Based on this, the purpose of this invention is to provide a terminal recycling treatment device for electroplating waste gas, in order to solve the technical problems of high energy consumption and discontinuous operation in the prior art, where waste gas passes through independent equipment such as a spray tower, dry filter, activated carbon filter, and catalytic combustion furnace in sequence, the process is unidirectional and segmented; activated carbon needs to be replaced as a whole after adsorption is saturated; or the desorbed gas is introduced into a catalytic combustion furnace for offline incineration treatment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a terminal circulation treatment device for electroplating waste gas, comprising a tower body, a servo motor disposed at the top of the tower body, a first rotating shaft sleeved at the output end of the servo motor, a rotary joint disposed on the outside of the first rotating shaft, a spray plate disposed on the outside of the first rotating shaft and connected to the rotary joint, a planetary gear differential disposed at the bottom of the first rotating shaft, a second rotating shaft disposed on the outside of the planetary gear differential, an adsorption wheel disposed on the outside of the second rotating shaft, a water receiving tray disposed on the outside of the first rotating shaft, an umbrella-shaped gas-liquid separator disposed on the outside of the water receiving tray, multiple sets of air lifting holes opened on the outside of the umbrella-shaped gas-liquid separator, multiple sets of baffles opened inside the umbrella-shaped gas-liquid separator, and a hot air regeneration assembly disposed inside the tower body.

[0008] By adopting the above technical solution, the mixed waste gas generated in the electroplating workshop enters the lower part of the tower horizontally through the waste gas inlet pipe. After entering, the waste gas flows upward naturally (along the axial direction of the tower). At this time, the adsorption wheel is driven by the second rotating shaft under the deceleration action of the planetary gear differential and rotates at a very low speed (two revolutions per hour). The tower body has an installation shell with an opening in the area corresponding to the waste gas inlet pipe. This structure allows only about a quarter of the circumference of the adsorption wheel surface to be directly exposed to the initial waste gas flow. The waste gas flows upward, forming a clear "adsorption working area", which concentrates the waste gas through this area. The honeycomb arrangement inside the adsorption wheel enhances the gas-solid two-phase contact and improves the initial adsorption efficiency.

[0009] Furthermore, the tower body is provided with a heat insulation chamber located at the top of the adsorption wheel, and the heat insulation chamber cooperates with the hot air regeneration component. An exhaust port is opened at the top of the tower body, and multiple sets of ventilation holes are opened inside the umbrella-shaped gas-liquid separator. A spray plate is provided at the top of the umbrella-shaped gas-liquid separator.

[0010] By adopting the above technical solution, the exhaust gas is forced through this part of the adsorption wheel. The adsorption wheel has a regular honeycomb structure inside. Its huge specific surface area and surface chemical properties, combined with the adsorbent inside, can effectively capture oil mist, aerosols and some VOCs molecules in the exhaust gas, achieving a deep purification effect. The linear velocity of the adsorption wheel is matched with the rising velocity of the exhaust gas. The precise deceleration of the planetary gear differential ensures that the exhaust gas has sufficient residence time in the "adsorption working zone". The gas that has been initially purified by the adsorption wheel continues to rise and reaches the umbrella-shaped gas-liquid separator. This component is a key structure to prevent the upper spray liquid from interfering with the lower adsorption function. The gas faces two paths: one part passes through multiple sets of vents opened near the central cone surface of the umbrella-shaped gas-liquid separator; the other part passes through multiple sets of rising air holes arranged around its edge. This distributes and guides the rising airflow, creating conditions for uniform and sufficient contact with the spray droplets in the next step.

[0011] Furthermore, the top of the tower body is provided with an installation shell, which cooperates with the servo motor. The water receiving tray is provided with multiple sets of water receiving pipes. The outside of the tower body is provided with a water storage tank, and the top of the water storage tank is connected to a water receiving pipe. The top of the water storage tank is provided with a water pump.

[0012] By adopting the above technical solution, the water pump starts to work, pumping the spray liquid pre-mixed with the agent in the water storage tank into the outlet pipe. The spray liquid enters the inner cavity of the high-speed rotating spray plate through the rotary joint. It should be noted that the spray plate is fixed to the first rotating shaft and rotates at a high speed (100 rpm) under the drive of the servo motor. When the cavity is filled with pressurized liquid, multiple sets of high-pressure water spray holes evenly distributed around the bottom circumference tear the liquid into extremely fine mist droplets under the combined action of centrifugal force and water pressure, and spray downward to form a water curtain covering the entire cross-section of the tower.

[0013] Furthermore, the top of the water storage tank is equipped with multiple sets of dosing chambers, the output end of the water pump is located at the water outlet pipe and connected to the rotary joint, the tower body is equipped with a bracket fixed to the hot air regeneration component, and the heat insulation chamber is equipped with an air intake.

[0014] By adopting the above technical solution, the rising exhaust gas and water mist meet in a countercurrent flow. The working state here is a violent two-phase turbulent mixing of gas and liquid. The alkaline component (NaOH) in the spray liquid quickly reacts with the acid mist (HCl, H2SO4 droplets) in the exhaust gas to generate harmless salts. At the same time, the surface of the droplets can also physically capture and dissolve some soluble gases and fine particulate matter. If an oxidant is added to the spray liquid from the dosing tank as needed, an advanced oxidation reaction can occur at the liquid film interface to degrade some VOCs. The rotation speed of the spray disc and the magnitude of the centrifugal force it generates directly determine the droplet size, and the optimal particle size distribution is the key to achieving high mass transfer efficiency and low resistance.

[0015] Furthermore, one end of the air intake is connected to a return pipe, and the other end of the return pipe is located at the top of the exhaust gas intake pipe. A sealing ring is provided between the exhaust gas intake pipe and the return pipe. A water sliding ring is provided between the first rotating shaft and the rotary joint. A filter element is provided at the top of the exhaust port. An air intake pipe that cooperates with the hot air regeneration component is provided on one side. The water pump input end is located at the bottom of the inside of the water storage tank.

[0016] By adopting the above technical solution, the gas after gas-liquid reaction and washing may decrease in temperature and continue to rise carrying a small amount of mist droplets. A demister layer (wire mesh) and a replaceable safety filter element are installed in the exhaust port at the top of the tower to remove the entrained trace droplets and residual particles, ensuring that the final exhaust gas is clear and meets the standards. It is discharged through the exhaust port. The servo motor drives the first rotating shaft to rotate at high speed for spraying. At the same time, its power is split and greatly reduced through the planetary gear differential at the bottom. The innovation of the planetary gear differential lies in its extremely high constant ratio reduction capability. It can convert the input of 100 revolutions per minute of the first rotating shaft into the output of 2 revolutions per hour of the second rotating shaft. This makes the rotation of the adsorption wheel extremely slow but absolutely continuous.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0019] (1) This invention integrates the spray plate and the adsorption wheel into a single tower body. After the waste gas enters, it undergoes adsorption and spray treatment sequentially inside the tower, forming a compact and continuous "in-tower assembly line". This design directly eliminates the complex layout of multiple devices connected in series through structural integration, greatly reduces the floor space and equipment connection points, reduces system wind resistance and leakage risk, and realizes a fundamental transformation of the process flow from "segmented" to "integrated and collaborative".

[0020] (2) This invention completely solves this problem through the mechanism of "rotational adsorption + zoned regeneration". The adsorption wheel rotates slowly and continuously under the drive of the planetary gear differential and the second rotating shaft, so that the adsorption working area is dynamically rotated. The saturated sector can be automatically transferred to the hot air regeneration component area in the heat insulation chamber for high-temperature desorption. At the same time, the clean sector is simultaneously transferred to the working position. This design realizes the synchronous operation of adsorption and regeneration, enabling the device to operate continuously for 24 hours, completely avoiding downtime caused by changing or offline regeneration of adsorbent, and ensuring the continuous and stable production process.

[0021] (3) The high-concentration organic waste gas generated by hot air desorption is captured by the air inlet and then precisely guided back to the inlet of the waste gas inlet pipe through the return pipe. After mixing with fresh waste gas, it re-enters the purification process of this device. These pollutants will undergo a new round of adsorption concentration and spray oxidation inside the system and be finally degraded. This design constructs a closed loop of internal treatment and completely eliminates the dependence on a large external incinerator. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 This is a partial structural diagram of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0026] Figure 5 For the present invention Figure 3 Enlarged view of point B;

[0027] Figure 6 This is a partial structural schematic diagram of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of point C;

[0029] Figure 8 For the present invention Figure 6 Enlarged view of point D;

[0030] Figure 9 This is a schematic diagram of the internal positions of the present invention;

[0031] Figure 10 This is a schematic diagram of the heat insulation chamber structure of the present invention.

[0032] In the diagram: 1. Tower body; 2. Water storage tank; 3. Water pump; 4. Exhaust gas inlet pipe; 5. Mounting shell; 6. Water outlet pipe; 7. Exhaust port; 8. Rotary joint; 9. Adsorption wheel; 10. Return pipe; 11. Umbrella-shaped gas-liquid separator; 12. Dosing chamber; 13. Servo motor; 14. First rotating shaft; 15. Baffle plate; 16. Water inlet pipe; 17. Planetary gear differential; 18. Second rotating shaft; 19. Hot air regeneration component; 20. Air inlet; 21. Spray plate; 22. Air riser hole; 23. Water inlet tray; 24. Insulation chamber. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0034] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0035] like Figures 1 to 10 As shown, the present invention provides a terminal circulation treatment device for electroplating waste gas, comprising a tower body, a servo motor 13 at the top of the tower body, a first rotating shaft 14 sleeved at the output end of the servo motor 13, a rotary joint 8 on the outside of the first rotating shaft 14, a spray plate 21 on the outside of the first rotating shaft 14 and connected to the rotary joint 8, a planetary gear differential 17 at the bottom of the first rotating shaft 14, a second rotating shaft 18 on the outside of the planetary gear differential 17, an adsorption wheel 9 on the outside of the second rotating shaft 18, a water receiving tray 23 on the outside of the first rotating shaft 14, an umbrella-shaped gas-liquid separator 11 on the outside of the water receiving tray 23, multiple sets of air lifting holes 22 on the outside of the umbrella-shaped gas-liquid separator 11, and multiple sets of baffles inside the umbrella-shaped gas-liquid separator 11. The tower body is equipped with a hot air regeneration component 19. The mixed waste gas generated in the electroplating workshop enters the lower part of the tower body horizontally through the waste gas inlet pipe 4. After entering, the waste gas flows upward naturally (along the axial direction of the tower body). At this time, the adsorption wheel 9 is driven by the second rotating shaft 18 under the deceleration action of the planetary gear differential 17, and rotates at a very low speed (two revolutions per hour). The tower body has an open mounting shell 5 in the area corresponding to the waste gas inlet pipe 4. This structure allows only about a quarter of the circumference of the surface of the adsorption wheel 9 to be directly exposed to the initial waste gas flow. The waste gas flows upward, forming a clear "adsorption working area", which concentrates the waste gas through this area. The honeycomb arrangement inside the adsorption wheel 9 enhances the gas-solid two-phase contact and improves the initial adsorption efficiency.

[0036] For example, the tower body is equipped with a heat insulation chamber 24 located at the top of the adsorption wheel 9, and the heat insulation chamber 24 cooperates with the hot air regeneration component 19. An exhaust port is opened at the top of the tower body, and multiple sets of ventilation holes are opened inside the umbrella-shaped gas-liquid separator 11. A spray plate 21 is provided at the top of the umbrella-shaped gas-liquid separator 11. The exhaust gas is forced through this part of the adsorption wheel 9. The adsorption wheel 9 has a regular honeycomb structure inside. Its huge specific surface area and surface chemical properties, combined with the adsorbent inside, can effectively capture oil mist, aerosols, and some VOCs molecules in the exhaust gas, achieving a deep purification effect. The linear velocity of the adsorption wheel 9 here is related to the exhaust gas velocity. In terms of matching the rising speed of the gas, the planetary gear differential 17 precisely reduces the speed, ensuring that the exhaust gas has sufficient residence time in the "adsorption working zone". The gas, which has been initially purified by the adsorption wheel 9, continues to rise and reaches the umbrella-shaped gas-liquid separator 11. This component is a key structure to prevent the upper spray liquid from interfering with the lower adsorption function. The gas faces two paths: one part passes through multiple sets of vent holes opened near the central cone surface of the umbrella-shaped gas-liquid separator 11; the other part passes through multiple sets of rising air holes 22 arranged around its edge, thereby evenly distributing and guiding the rising airflow, creating conditions for uniform and sufficient contact with the spray droplets in the next step.

[0037] For example, a mounting shell 5 is provided at the top of the tower body, and the mounting shell 5 cooperates with the servo motor 13. Multiple sets of water receiving pipes 16 are provided inside the water receiving tray 23. A water storage tank 2 is provided on the outside of the tower body, and the top of the water storage tank 2 is connected to the water receiving pipe 16. A water pump 3 is provided at the top of the water storage tank 2. When the water pump 3 starts working, it pumps the spray liquid with pre-mixed agent in the water storage tank 2 into the water outlet pipe 6. The spray liquid enters the inner cavity of the spray plate 21, which is rotating at high speed, through the rotary joint 8. It should be noted that the spray plate 21 is fixed to the first rotating shaft 14 and rotates at a high speed (100 rpm) under the drive of the servo motor 13. When the cavity is filled with pressurized liquid, multiple sets of high-pressure water spray holes evenly distributed around the bottom circumference tear the liquid into extremely fine mist droplets under the combined action of centrifugal force and water pressure, and spray downward to form a water curtain covering the entire cross section of the tower body.

[0038] For example, the top of the water storage tank 2 is equipped with multiple dosing chambers 12, the output end of the water pump 3 is located at the water outlet pipe 6 and connected to the rotary joint 8, the tower body is equipped with a support fixed to the hot air regeneration component 19, and the heat insulation chamber 24 is equipped with an air intake 20. In this case, the exhaust gas rising from below meets the water mist in a countercurrent flow. The working state here is a violent gas-liquid two-phase turbulent mixing. The alkaline component (NaOH) in the spray liquid quickly reacts with the acid mist (HCl, H2SO4 droplets) in the exhaust gas to generate harmless salts. At the same time, the surface of the droplets can also physically capture and dissolve some soluble gases and small particles. If an oxidant is added to the spray liquid from the dosing chamber 12 as needed, an advanced oxidation reaction can occur at the liquid film interface to degrade some VOCs. The rotation speed of the spray disc 21 and the magnitude of the centrifugal force it generates directly determine the droplet size. The optimal particle size distribution is the key to achieving high mass transfer efficiency and low resistance.

[0039] For example, one end of the air intake 20 is connected to the return pipe 10, and the other end of the return pipe 10 is set at the top of the exhaust gas intake pipe 4. A sealing ring is set between the exhaust gas intake pipe 4 and the return pipe 10. A water sliding ring is set between the first rotating shaft 14 and the rotary joint 8. A filter element is set at the top of the exhaust port 7. A matching air intake pipe is set on one side of the hot air regeneration component 19. The input end of the water pump 3 is set at the bottom of the water storage tank 2. The gas after the gas-liquid reaction and washing may decrease in temperature and continue to rise carrying a small amount of mist droplets. A demisting layer (wire mesh) and a replaceable safety filter element are set in the exhaust port 7 at the top of the tower to remove the entrained micro-droplets and residual particles, ensuring that the final exhaust gas is clear and meets the standards, and is discharged through the exhaust port 7.

[0040] The working principle and usage process of this invention: After the device is started, the mixed waste gas generated in the electroplating workshop enters the lower part of the tower body 1 horizontally through the waste gas inlet pipe 4. After the waste gas enters, it naturally flows upward (along the axial direction of the tower body 1). At this time, the adsorption wheel 9 is driven by the second rotating shaft 18 under the deceleration action of the planetary gear differential 17, and rotates at a very low speed (two revolutions per hour). The tower body 1 has an installation shell 5 with an opening in the area corresponding to the waste gas inlet pipe 4. This structure allows only about a quarter of the circumference of the surface of the adsorption wheel 9 to be directly exposed to the initial waste gas flow. The waste gas flows upward, forming a clear "adsorption working area", which allows the waste gas to concentrate through this area. The honeycomb arrangement inside the adsorption wheel 9 strengthens the gas-solid two-phase contact and improves the initial adsorption efficiency.

[0041] The exhaust gas is forced through this part of the adsorption wheel 9. The interior of the adsorption wheel 9 has a regular honeycomb structure. Its huge specific surface area and surface chemical properties, together with the adsorbent inside, can effectively capture oil mist, aerosols and some VOCs molecules in the exhaust gas, achieving a deep purification effect. The linear velocity of the adsorption wheel 9 is matched with the rising velocity of the exhaust gas. The planetary gear differential 17 precisely reduces the speed to ensure that the exhaust gas has enough residence time in the "adsorption working zone".

[0042] The gas, after being initially purified by the adsorption wheel 9, continues to rise and reaches the umbrella-shaped gas-liquid separator 11. This component is a key structure to prevent the upper spray liquid from interfering with the lower adsorption function. The gas faces two paths: one part passes through multiple sets of vent holes opened near the central cone surface of the umbrella-shaped gas-liquid separator 11; the other part passes through multiple sets of rising air holes 22 arranged around its edge, thereby evenly distributing and guiding the rising airflow, creating conditions for uniform and sufficient contact with the spray droplets in the next step.

[0043] At the same time, the water pump 3 starts to work, pumping the spray liquid with pre-mixed agent in the water storage tank 2 into the water outlet pipe 6. The spray liquid enters the inner cavity of the spray plate 21, which is rotating at high speed, through the rotary joint 8. It should be noted that the spray plate 21 is fixed to the first rotating shaft 14 and rotates at a high speed (100 rpm) under the drive of the servo motor 13. When the cavity is filled with pressurized liquid, the multiple sets of high-pressure water spray holes evenly distributed around the bottom circumference tear the liquid into extremely fine mist droplets under the combined action of centrifugal force and water pressure, and spray downward to form a water curtain covering the entire cross section of the tower body 1.

[0044] At this point, the rising exhaust gas meets the water mist in a countercurrent flow. The working state here is a violent two-phase turbulent mixing of gas and liquid. The alkaline component (NaOH) in the spray liquid quickly reacts with the acid mist (HCl, H2SO4 droplets) in the exhaust gas to generate harmless salts. At the same time, the droplet surface can also physically capture and dissolve some soluble gases and small particulate matter. If an oxidant is added to the spray liquid from the dosing chamber 12 as needed, an advanced oxidation reaction can occur at the liquid film interface to degrade some VOCs. The rotation speed of the spray disc 21 and the magnitude of the centrifugal force it generates directly determine the droplet size. The optimal particle size distribution is the key to achieving high mass transfer efficiency and low resistance.

[0045] After the gas-liquid reaction and washing are completed, the temperature of the gas may decrease and it continues to rise with a small amount of mist droplets. A demister (mesh) and a replaceable safety filter are installed in the exhaust port 7 at the top of the tower body 1 to remove the entrained micro-droplets and residual particles, ensuring that the final exhaust gas is clear and meets the standards, and is discharged through the exhaust port 7.

[0046] Among them, the servo motor 13 drives the first rotating shaft 14 to rotate at high speed for spraying. At the same time, its power is diverted and greatly reduced through the planetary gear differential 17 at the bottom. The innovation of the planetary gear differential 17 lies in its extremely high constant ratio reduction capability. It can convert the input of 100 revolutions per minute of the first rotating shaft 14 into the output of 2 revolutions per hour of the second rotating shaft 18. This makes the rotation of the adsorption wheel 9 extremely slow but absolutely continuous.

[0047] As the adsorption wheel 9 slowly rotates, the previously saturated quarter-area (i.e., the "adsorption working area") gradually moves out of the main airflow channel, while a new clean area simultaneously moves in to take over the work. The saturated area is eventually rotated into a sealed cavity isolated from the main treatment area and surrounded by the heat insulation chamber 24.

[0048] When the saturated area is aligned with the hot air regeneration component 19, the component is activated and blows high-temperature hot air of 200 to 300 degrees Celsius into the fan-shaped area of ​​the adsorption wheel 9. Under the action of high temperature, VOCs and other organic matter adsorbed in the micropores of the material gain energy, detach from the surface of the adsorbent, and complete the desorption and regeneration. The high-concentration, low-volume organic waste gas generated by desorption is drawn in real time by the air inlet 20 set on the heat insulation chamber 24 (an external exhaust fan is required to cooperate with it). Guided by the return pipe 10, it is accurately sent back to the inlet end of the waste gas inlet pipe 4 and mixed with fresh waste gas.

[0049] The above achieves the "internal circulation" of pollutants. High-concentration desorbed gas no longer needs to be introduced into an additional large catalytic combustion furnace for treatment. Instead, it is diluted inside the system and then undergoes the complete purification process of steps 1 to 3 again. This not only completely decomposes pollutants and avoids investment and high energy consumption in secondary pollution treatment facilities, but also achieves dynamic balance and recycling of treatment medium (adsorption capacity) and organic load in waste gas.

[0050] Furthermore, the droplets and pollutants that fall after spraying are effectively intercepted and collected by the umbrella-shaped gas-liquid separator 11. The droplets flow along its conical surface to the lowest point of the annular water receiving tray 23. The water receiving tray 23 is connected to the water storage tank 2 at the bottom of the tower body 1 through multiple water receiving pipes 16. In order to ensure the seal between the stationary component, the water receiving tray 23, and the rotating first rotating shaft 14, a water sliding ring is set between the two. While ensuring absolute sealing to prevent leakage, the shaft is allowed to rotate freely.

[0051] After the spray liquid containing pollutants returns to the storage tank 2, during the sedimentation and homogenization process, the chemical agent can be automatically or manually added from the dosing tank 12 to restore its chemical activity. Then, it is sent to the next cycle by the water pump 3. The dosing tank 12 is usually designed to be transparent or have a liquid level window, so that the staff can observe the remaining amount of chemical agent in real time.

[0052] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A terminal recycling treatment device for electroplating waste gas, comprising a tower body (1), characterized in that, A servo motor (13) is provided at the top of the tower body (1). A first rotating shaft (14) is sleeved at the output end of the servo motor (13). A rotary joint (8) is provided on the outside of the first rotating shaft (14). A spray plate (21) is provided on the outside of the first rotating shaft (14), and the spray plate (21) is connected to the rotary joint (8). A planetary gear differential (17) is provided at the bottom of the first rotating shaft (14). A second rotating shaft (18) is provided on the outside of the planetary gear differential (17). An adsorption wheel (9) is provided on the outside of the second rotating shaft (18). A water receiving tray (23) is provided on the outside of the first rotating shaft (14). An umbrella-shaped gas-liquid separator (11) is provided on the outside of the water receiving tray (23). Multiple sets of air-lifting holes (22) are opened on the outside of the umbrella-shaped gas-liquid separator (11). Multiple sets of baffles (15) are opened inside the umbrella-shaped gas-liquid separator (11). A hot air regeneration assembly (19) is provided inside the tower body (1).

2. The electroplating waste gas terminal recycling treatment device according to claim 1, characterized in that: The tower body (1) is provided with a heat insulation chamber (24) located at the top of the adsorption wheel (9), and the heat insulation chamber (24) cooperates with the hot air regeneration component (19). The top of the tower body (1) is provided with an exhaust port (7).

3. The electroplating waste gas terminal recycling treatment device according to claim 1, characterized in that: The umbrella-shaped gas-liquid separator (11) has multiple sets of ventilation holes inside, and a spray plate (21) is provided at the top of the umbrella-shaped gas-liquid separator (11).

4. The electroplating waste gas terminal recycling treatment device according to claim 1, characterized in that: The top of the tower body (1) is provided with an installation shell (5), and the installation shell (5) cooperates with the servo motor (13). The water receiving tray (23) is provided with multiple sets of water receiving pipes (16).

5. The electroplating waste gas terminal recycling treatment device according to claim 1, characterized in that: A water storage tank (2) is provided on the outside of the tower body (1), and a water inlet pipe (16) is connected to the top of the water storage tank (2). A water pump (3) is provided at the top of the water storage tank (2).

6. The electroplating waste gas terminal recycling treatment device according to claim 5, characterized in that: The top of the water storage tank (2) is equipped with multiple sets of dosing chambers (12), and the output end of the water pump (3) is located on the water outlet pipe (6) and connected to the rotary joint (8).

7. The electroplating waste gas terminal recycling treatment device according to claim 2, characterized in that: The tower body (1) is provided with a support frame that is fixed to the hot air regeneration component (19), and the heat insulation chamber (24) is provided with an air intake (20).

8. The electroplating waste gas terminal recycling treatment device according to claim 7, characterized in that: One end of the air intake (20) is connected to the return pipe (10), and the other end of the return pipe (10) is located at the top of the exhaust gas inlet pipe (4). A sealing ring is provided between the exhaust gas inlet pipe (4) and the return pipe (10).

9. The electroplating waste gas terminal recycling treatment device according to claim 2, characterized in that: A water-lubricating ring is provided between the first rotating shaft (14) and the rotary joint (8), and a filter element is provided at the top of the exhaust port (7).

10. The electroplating waste gas terminal recycling treatment device according to claim 5, characterized in that: The hot air regeneration component (19) is provided with a suction pipe on one side, and the input end of the water pump (3) is located at the bottom of the water storage tank (2).

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