Electroplating acid mist efficient environmental protection treatment device

Abstract

The application relates to the technical field of environment-friendly treatment devices, and discloses an electroplating acid mist high-efficiency environment-friendly treatment device which comprises a treatment box, a gas inlet pipe is welded through the side surface of the treatment box, an air suction cover is welded at the end of the gas inlet pipe, a sleeve is welded on the surface of the gas inlet pipe, and heat dissipation fins are welded between the gas inlet pipe and the sleeve. In the application, the screw-belt type heat dissipation fins welded between the gas inlet pipe and the sleeve form a high-efficiency heat exchange channel. When the acid mist flows in the gas inlet pipe, the heat carried by the high-temperature acid mist is transmitted to the alkali liquor in the sleeve through the heat dissipation fins, so that the acid mist is pre-cooled, the alkali liquor is pre-heated, the pre-heated alkali liquor is conveyed into the treatment box under the action of a booster pump, is sprayed on a filler layer, the pre-heated alkali liquor can increase the system temperature, the probability of acid-base ion collision is increased, so that the neutralization reaction time is shortened, the acid mist removal efficiency per unit time is improved, the pre-heated alkali liquor can reduce heat loss, and the energy consumption cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection treatment equipment technology, and in particular to a high-efficiency environmental protection treatment device for electroplating acid mist. Background Technology

[0002] In the electroplating industry, the generation of acid mist is an unavoidable problem. The electroplating solution in the electroplating tank has a complex composition. During electroplating and related pickling operations, a large amount of acid mist waste gas will escape. If this acid mist is not effectively treated, it will not only cause serious pollution to the workshop environment and threaten the health of the operators, but also accelerate the corrosion of equipment, shorten the normal service life of the equipment, and have an adverse impact on the atmospheric environment, which seriously violates the current strict environmental protection requirements.

[0003] Energy consumption is also a significant issue in the treatment of electroplating acid mist. Existing treatment devices often focus only on purifying the acid mist, neglecting the large amount of heat contained within it. This heat is usually directly released into the environment, resulting in a huge waste of energy. Against the backdrop of global advocacy for energy conservation, emission reduction, and green development, how to effectively recover and utilize the heat in the acid mist while treating it, thereby reducing energy consumption, has become a critical issue that urgently needs to be addressed. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a highly efficient and environmentally friendly electroplating acid mist treatment device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-efficiency and environmentally friendly electroplating acid mist treatment device, comprising a treatment box, an air inlet pipe welded through the side surface of the treatment box, and an air intake hood welded to the end of the air inlet pipe, a sleeve welded to the surface of the air inlet pipe, and heat dissipation fins welded between the air inlet pipe and the sleeve, a booster pump connected to the lower surface of the sleeve via a pipe, the booster pump connected to the treatment box via a pipe, a spray pipe welded to the other end of the sleeve, and an ultrasonic sprayer installed on the lower surface of the spray pipe, a support plate installed inside the treatment box, and a through hole opened through the surface of the support plate, a filler layer filled on the upper surface of the support plate, a heating coil installed inside the filler layer, and a negative pressure fan installed through the upper surface of the treatment box.

[0006] By adopting the above technical solution, a high-efficiency heat exchange channel is formed by the spiral ribbon heat dissipation fins welded between the air inlet pipe and the sleeve. When the acid mist flows in the air inlet pipe, the heat carried by the high-temperature acid mist is transferred to the alkaline solution in the sleeve through the heat dissipation fins, realizing the pre-cooling of the acid mist and preheating of the alkaline solution. The preheated alkaline solution is transported to the treatment tank under the action of the booster pump and sprayed on the packing layer. Preheating the alkaline solution can increase the system temperature, increase the probability of acid-base ion collision, thereby shortening the neutralization reaction time and improving the acid mist removal efficiency per unit time. At the same time, preheating the alkaline solution can reduce heat loss and reduce energy consumption costs.

[0007] Furthermore, the upper surface of the air intake pipe is provided with a through hole, and an arc-shaped cover is fixed to the through hole by bolts. A sealing ring is inlaid at the edge of the arc-shaped cover. A keel is welded to the lower surface of the arc-shaped cover. A filter bag is installed on the outside of the keel. A metal filter basket is threadedly connected to the inside of the keel and at the front end of the filter bag. A guide ring is welded to the inlet of the metal filter basket.

[0008] By adopting the above technical solution, the metal filter basket first intercepts large particles of impurities, while the filter bag further filters out tiny particles. The keel support structure prevents the filter bag from deforming, ensuring a long-term stable filtration effect. The detachable structure of the filter bag and metal filter basket facilitates regular cleaning or replacement, reducing maintenance costs. At the same time, it avoids dust in the acid mist clogging the packing layer, extending the cleaning cycle of the packing layer.

[0009] Furthermore, the heat dissipation fins have a ribbon-like structure.

[0010] By adopting the above technical solution, compared with straight fins, the heat exchange area is significantly increased, the heat exchange efficiency is improved, and the cooling speed of acid mist is accelerated. At the same time, the spiral structure can make the alkaline solution form a spiral flow in the sleeve, prolonging the heat exchange time and improving the heat exchange effect.

[0011] Furthermore, the surfaces of the heating coil, air inlet pipe, heat dissipation fins, and sleeve are all coated with a ceramic coating.

[0012] By adopting the above technical solutions, surface roughness is reduced, making it difficult for scale to adhere, while enhancing resistance to acid and alkali corrosion and improving service life.

[0013] Furthermore, a baffle demister is bolted to the inside of the processing box.

[0014] By adopting the above technical solution, the baffle plate demister changes the airflow direction, causing the residual water mist after acid mist treatment to collide and condense on the baffle plate, separating and recovering the liquid, preventing water mist from being discharged with the exhaust gas, improving the cleanliness of the emitted gas, and meeting environmental protection requirements.

[0015] Furthermore, an integrated controller is bolted to the side surface of the processing box.

[0016] By adopting the above technical solution, the integrated controller integrates the operating parameters of components such as booster pump, ultrasonic sprayer, and heating coil, and realizes functions such as one-button start / stop, timed adjustment, and fault warning, thereby improving the convenience of operation and system stability.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. In this application, a high-efficiency heat exchange channel is formed by the spiral ribbon heat dissipation fins welded between the air inlet pipe and the sleeve. When the acid mist flows in the air inlet pipe, the heat carried by the high-temperature acid mist is transferred to the alkaline solution in the sleeve through the heat dissipation fins, thereby achieving the pre-cooling of the acid mist and preheating of the alkaline solution. The preheated alkaline solution is transported to the treatment tank under the action of the booster pump and sprayed on the packing layer. Preheating the alkaline solution can increase the system temperature, increase the probability of acid-base ion collision, thereby shortening the neutralization reaction time and improving the acid mist removal efficiency per unit time. At the same time, preheating the alkaline solution can reduce heat loss and reduce energy consumption costs.

[0019] 2. In this application, a metal filter basket is used to first intercept large particulate impurities, while the filter bag further filters out small particles. The keel support structure prevents the filter bag from deforming, ensuring a long-term stable filtration effect. The detachable filter bag and metal filter basket facilitate regular cleaning or replacement, reducing maintenance costs. At the same time, it avoids dust in the acid mist clogging the packing layer, extending the cleaning cycle of the packing layer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the sleeve and its connection structure according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the keel and its connection structure according to an embodiment of the present utility model.

[0023] In the diagram: 1. Processing box; 2. Booster pump; 3. Air inlet pipe; 4. Heat dissipation fins; 5. Sleeve; 6. Spray pipe; 7. Ultrasonic sprayer; 8. Support plate; 9. Packing layer; 10. Heating coil; 11. Negative pressure fan; 12. Arc-shaped cover; 13. Integrated controller; 14. Keel; 15. Filter bag; 16. Metal filter basket; 17. Baffle plate demister; 18. Suction hood. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] like Figure 1-3 As shown in the embodiment of this application, a high-efficiency and environmentally friendly electroplating acid mist treatment device is disclosed, including a treatment box 1. An air inlet pipe 3 is welded through the side surface of the treatment box 1, and an air intake hood 18 is welded to the end of the air inlet pipe 3. A sleeve 5 is welded to the surface of the air inlet pipe 3, and heat dissipation fins 4 are welded between the air inlet pipe 3 and the sleeve 5. A booster pump 2 is connected to the lower surface of the sleeve 5 through a pipe. The booster pump 2 is connected to the treatment box 1 through a pipe. A spray pipe 6 is welded to the other end of the sleeve 5, and an ultrasonic sprayer 7 is installed on the lower surface of the spray pipe 6. A support plate 8 is installed inside the treatment box 1, and a through hole is opened through the surface of the support plate 8. A filler layer 9 is filled on the upper surface of the support plate 8, and a heating coil 10 is installed inside the filler layer 9. A negative pressure fan 11 is installed through the upper surface of the treatment box 1, and the heat dissipation fins 4 have a spiral ribbon structure.

[0026] Treatment box 1 and air inlet pipe 3: The side surface of treatment box 1 and air inlet pipe 3 are welded together, and the weld joint is beveled to ensure airtightness and structural strength. An air intake hood 18 (flared) is welded to the end of air inlet pipe 3. The opening faces the acid mist source and is connected to the electroplating tank through a flange. The sleeve 5 is cylindrical and fitted on the outside of air inlet pipe 3. The two are fixed by annular welding of heat dissipation fins 4. The fins are spirally wound around the outer wall of air inlet pipe 3, and the edges of the fins are welded to the inner wall of sleeve 5 to form a closed annular heat exchange channel. The air intake hood 18 collects acid mist and introduces it into air inlet pipe 3. The spiral heat dissipation fins 4 transfer the heat of acid mist to the alkaline solution in sleeve 5 by increasing the contact area, realizing the pre-cooling of acid mist and preheating of alkaline solution. The preheated alkaline solution is pumped by booster pump 2 to spray pipe 6 to store heat energy for subsequent neutralization reaction.

[0027] Spraying system and packing layer 9: One end of sleeve 5 is welded through to spray pipe 6. Ultrasonic sprayers 7 are evenly distributed on the lower surface of spray pipe 6. The sprayers are connected to spray pipe 6 through threaded interfaces. The nozzles are aimed downwards at packing layer 9. Support plate 8 is fixed to support boss on inner wall of treatment box 1 by bolts. Through holes on plate are arranged in a quincunx pattern. Packing layer 9 fills the top of support plate 8. Heating coil 10 is embedded in packing layer 9. Coil inlet and outlet are connected to external heat source. Booster pump 2 pumps preheated alkali solution into spray pipe 6. After being atomized by ultrasonic sprayers 7, it reacts with acid mist in packing layer 9. Heating coil 10 uses external auxiliary heating to maintain the temperature of packing layer 9, improve reaction rate, reduce alkali solution condensation loss, and reduce energy consumption.

[0028] The upper surface of the air intake pipe 3 has a through hole, and an arc-shaped cover 12 is fixed to the through hole by bolts. A sealing ring is inlaid at the edge of the arc-shaped cover 12. A keel 14 is welded to the lower surface of the arc-shaped cover 12. A filter bag 15 is installed on the outside of the keel 14. A metal filter basket 16 is threadedly connected to the inside of the keel 14 and at the front end of the filter bag 15. A guide ring is welded to the inlet of the metal filter basket 16.

[0029] Filtration System: Rectangular through holes (size matching arc-shaped cover 12) are opened on the surface of the air inlet pipe 3. The arc-shaped cover 12 is connected to the air inlet pipe 3 by bolts, and a sealing ring is embedded in the edge of the cover. The keel 14 is welded to the lower surface of the arc-shaped cover 12. The filter bag 15 is fitted on the outside of the keel 14. The metal filter basket 16 is screwed into the front end of the keel 14 by threads. The guide ring is welded to the inside of the filter basket inlet. Acid mist first passes through the metal filter basket 16 (pore diameter 2-5mm) to intercept large particles of impurities (such as electroplating tank slag), and then passes through the filter bag 15 (precision 1-2μm) to filter small particles. The keel 14 supports the filter bag 15 to prevent deformation under negative pressure. The detachable structure allows the filter components to be disassembled and cleaned individually (the cleaning cycle is extended to 30 days, which is 3 times longer than traditional filter screens), avoiding impurities from clogging the through holes of the packing layer 9 and maintaining the long-term stable operation of the system.

[0030] The surfaces of the heating coil 10, the air inlet pipe 3, the heat dissipation fins 4, and the sleeve 5 are all coated with a ceramic coating.

[0031] The protective mechanism of the ceramic coating: The heating coil 10, the air inlet pipe 3, the heat dissipation fins 4, and the sleeve 5 are all coated with a plasma-sprayed ceramic coating (Al2O3-TiO2 composite coating, thickness 50-80μm). The coating is chemically bonded to the metal substrate, which isolates the metal from the corrosion of acid mist such as sulfuric acid and hydrochloric acid, extending the service life to 8-10 years. The surface roughness of the coating Ra < 0.2μm, making it difficult for crystals in acid mist (such as calcium sulfate) to adhere, thus reducing the cleaning frequency.

[0032] Inside the treatment box 1, a baffle demister 17 is fixed with bolts.

[0033] Installation of baffle plate demister 17: The baffle plate demister 17 is fixed inside the treatment box 1 by L-shaped bracket bolts. The baffle plate is wavy. The baffle plate demister 17 changes the airflow direction, so that the water mist remaining after acid mist treatment collides and condenses on the baffle plate, separates and recovers the liquid, avoids water mist from being discharged with the exhaust gas, improves the cleanliness of the exhaust gas, and meets environmental protection requirements.

[0034] An integrated controller 13 is bolted to the side surface of the processing box 1.

[0035] The integrated controller 13 (PLC control cabinet) is fixed to the side of the processing box 1 with bolts. The controller interface is connected to the electrical control circuit of the booster pump 2, ultrasonic sprayer 7, heating coil 10, and negative pressure fan 11. It integrates the operating parameters of components such as booster pump 2, ultrasonic sprayer 7, and heating coil 10 to realize functions such as one-button start / stop, timed adjustment, and fault warning, thereby improving the convenience of operation and system stability.

[0036] The working principle of the high-efficiency and environmentally friendly electroplating acid mist treatment device in this embodiment is as follows: The suction hood 18 is connected to the exhaust pipe above the electroplating tank through a flange. The suction force generated by the negative pressure fan 11 is used to draw the acid mist volatilized during the electroplating process into the air inlet pipe 3. The metal filter basket 16 and filter bag 15 assembly on the upper surface of the air inlet pipe 3 perform preliminary filtration of the acid mist: large particles of impurities are intercepted by the metal filter basket 16, and small particles (1-2μm) are further captured by the filter bag 15 to prevent impurities from clogging the subsequent packing layer 9. The sleeve 5 sleeved on the outside of the air inlet pipe 3 and the spiral heat dissipation fins 4 form an annular heat exchange channel: the high-temperature acid mist spirals in the air inlet pipe 3 and transfers heat to the sleeve 5 through the fins. The alkaline solution, the sleeve 5 fitted outside the air inlet pipe 3, and the spiral heat dissipation fins 4 form an annular heat exchange channel. High-temperature acid mist spirals within the air inlet pipe 3, transferring heat to the alkaline solution within the sleeve 5 through the fins. The negative pressure fan 11 creates negative pressure within the treatment chamber 1, guiding the acid mist from the air inlet pipe 3 into the treatment chamber 1. As it passes upwards through the packing layer 9, it comes into full contact with the atomized alkaline solution, resulting in an acid-base neutralization reaction. The heating coil 10 within the packing layer 9 activates electric heating or steam-assisted heating when the acid mist concentration is low or the ambient temperature is too low. The increased temperature intensifies the thermal motion of acid and alkali ions, increasing the collision probability by 30-50%, thus accelerating the neutralization reaction rate and achieving an acid mist removal rate of up to 99%. The treated gas, carrying a small amount of water mist, rises to the baffle plate demister 17. The airflow changes direction due to the baffle plate (wavy, 90° angle). The water mist condenses into droplets due to inertia and collides with the plate wall, flowing into the liquid receiving tank along the plate wall. It then flows back to the liquid accumulation area at the bottom of the treatment tank 1 through the pipe, realizing liquid recovery. The gas after demistering is extracted by the negative pressure fan 11 and discharged through the exhaust pipe. The acid mist concentration in the discharged gas is <5mg / m³, and the water mist content is <100mg / m³, which meets the environmental emission standards.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A kind of electroplating acid mist high-efficiency environmental protection treatment device, including processing box (1), it is characterized by: An air inlet pipe (3) is welded through the side surface of the processing box (1), and an air intake hood (18) is welded to the end of the air inlet pipe (3). A sleeve (5) is welded to the surface of the air inlet pipe (3), and heat dissipation fins (4) are welded between the air inlet pipe (3) and the sleeve (5). A booster pump (2) is connected to the lower surface of the sleeve (5) through a pipe. The booster pump (2) is connected to the processing box (1) through a pipe. A spray pipe (6) is welded to the other end of the sleeve (5), and an ultrasonic sprayer (7) is installed on the lower surface of the spray pipe (6). A support plate (8) is installed inside the processing box (1), and a through hole is opened through the surface of the support plate (8). A filler layer (9) is filled on the upper surface of the support plate (8), and a heating coil (10) is installed inside the filler layer (9). A negative pressure fan (11) is installed through the upper surface of the processing box (1).

2. The high-efficiency and environmentally friendly electroplating acid mist treatment device according to claim 1, characterized in that: The upper surface of the air inlet pipe (3) is provided with a through hole, and an arc-shaped cover (12) is fixed to the through hole by bolts. A sealing ring is inlaid at the edge of the arc-shaped cover (12). A keel (14) is welded to the lower surface of the arc-shaped cover (12). A filter bag (15) is installed on the outside of the keel (14). A metal filter basket (16) is threadedly connected inside the keel (14) and at the front end of the filter bag (15). A guide ring is welded to the inlet of the metal filter basket (16).

3. The high-efficiency and environmentally friendly electroplating acid mist treatment device according to claim 2, characterized in that: The heat dissipation fins (4) have a spiral ribbon structure.

4. The high-efficiency and environmentally friendly electroplating acid mist treatment device according to claim 3, characterized in that: The surfaces of the heating coil (10), air inlet pipe (3), heat dissipation fins (4) and sleeve (5) are all coated with ceramic coating.

5. The high-efficiency and environmentally friendly electroplating acid mist treatment device according to claim 4, characterized in that: The inside of the processing box (1) is fixed with a baffle demister (17) by bolts.

6. The high-efficiency and environmentally friendly electroplating acid mist treatment device according to claim 5, characterized in that: An integrated controller (13) is bolted to the side surface of the processing box (1).

Images