Waste gas treatment device for paint production

Abstract

The invention relates to the field of waste gas treatment, in particular to a waste gas treatment device for paint production. The device comprises a treatment cylinder, an adsorption pipeline, a residue collection assembly and a filtering assembly. The treatment barrel is provided with two ventilation assemblies; ventilation channels and electrolytic regeneration channels are alternately arranged on the two groups of ventilation assemblies; the multiple groups of adsorption pipelines are arranged in the adsorption chamber; the slag collecting component is positioned at the bottom of the treatment cylinder; the filter assembly is located at the top of the treatment cylinder. The residue collecting assembly is used for separating and recycling paint waste residues. The ventilation assembly is matched with the adsorption pipeline, so that the adsorption effect of the adsorbent is ensured while the waste gas treatment progress is not influenced. The filtering assembly solidifies residual paint components in the waste gas so that the residual paint components can be better filtered and intercepted by the filtering element, and the filtering effect is improved. And finally, through the cooperation of the structures, three waste gas treatment processes are sequentially completed, so that the whole paint waste gas treatment process is good in cohesion, diversified in mode and efficient and lasting in treatment, and paint production is more environmentally friendly.

Description

Technical Field

[0001] The invention relates to the field of waste gas treatment, and in particular to a waste gas treatment device for paint production. Background Art

[0002] Paint waste gas contains a variety of harmful substances, and its harm is mainly reflected in the impact on human health, plants, weather and climate.

[0003] 1. Hazards to Human Health

[0004] Respiratory diseases: Paint waste gas is usually irritating. Long-term inhalation will irritate the respiratory tract and may cause respiratory diseases such as tonsillitis and bronchitis, leading to symptoms such as coughing, sputum, and damage to the respiratory mucosa.

[0005] Blood diseases: Paint waste gas contains harmful substances such as formaldehyde and benzene. Long-term inhalation may cause harm to human blood health, such as causing leukemia, hematopoietic dysfunction and other blood diseases.

[0006] Low immunity: Long-term inhalation of paint exhaust fumes may lead to decreased body functions, low immunity, and susceptibility to colds or illnesses.

[0007] Damage to the nervous system: Harmful substances in paint exhaust may also affect the human body's nerve function, leading to drowsiness, fatigue, inattention, poor sleep quality, insomnia, etc.

[0008] Skin and eye diseases: Long-term exposure to paint exhaust fumes may cause skin allergies, as well as conjunctivitis, keratitis, photophobia, tearing and other symptoms.

[0009] 2. Harm to plants

[0010] Acute harm: When the concentration of pollutants in paint exhaust gas is very high, it will cause acute harm to plants, causing scars on the surface of plant leaves, or directly causing the leaves to wither and fall off.

[0011] Chronic harm: When the concentration of pollutants in paint exhaust gas is not high, it will cause chronic harm to plants, causing plant leaves to turn green. Although there are no obvious symptoms of harm on the surface, the physiological functions of the plants have been affected, resulting in a decrease in plant yield and deterioration in quality.

[0012] 3. Impact on Weather and Climate

[0013] Reduce the amount of solar radiation reaching the ground: The smoke particles in paint exhaust can make the air turbid, block the sunlight, reduce the amount of solar radiation reaching the ground, and affect the growth and development of humans, animals and plants.

[0014] Increase atmospheric precipitation: The particles in paint exhaust gas act as water vapor condensation nuclei. When other precipitation conditions in the atmosphere cooperate with it, precipitation weather will occur, leading to an increase in precipitation.

[0015] Acid rain: Pollutants such as sulfur dioxide in paint waste gas are oxidized to form sulfuric acid, which falls with natural precipitation to form acid rain, causing corrosion and damage to forests, crops, buildings, etc.

[0016] Increased atmospheric temperature: The waste heat in paint exhaust is discharged into the air, which will cause the temperature of the air near the ground to rise, forming a "heat island effect".

[0017] Impact on global climate: Pollutants such as carbon dioxide in paint exhaust have an important impact on global climate change and may cause global climate anomalies.

[0018] In summary, paint waste gas has caused serious harm to human health, plants, weather and climate. Therefore, the management and prevention measures of paint waste gas should be strengthened to reduce its impact on the environment and human body.

[0019] A Chinese patent document with authorization number CN220802396U discloses a waste gas treatment device for paint production, including a waste gas cylinder and activated carbon cotton, wherein a filter cartridge is movably provided on the inner wall of the waste gas cylinder, and a filter cover is movably connected to the inner wall of the end of the filter cartridge, and a filter screen is embedded and fixed inside the filter cover, and activated carbon cotton is movably installed on the inner wall of the filter cartridge, a positioning arm is fixedly connected to the upper surface of the waste gas cylinder, and a bracket is movably installed on the upper end of the positioning arm, and a sleeve is fixedly installed on the end of the bracket, and a clamping rod is threadedly installed on the inner wall of the sleeve, and a pressing mechanism is installed on the end of the clamping rod, a stabilizing arm is fixedly connected to the lower surface of the sleeve, and a stabilizing rod is movably connected to the inner wall of the end of the stabilizing arm.

[0020] The above-mentioned waste gas treatment device for paint production has the following shortcomings: paint waste gas contains volatile organic compounds, formaldehyde, paint particles and other harmful substances. It is common to use adsorbents (such as activated carbon, zeolite, molecular sieves, etc.) to adsorb harmful substances in waste gas and remove them from the gas, but the adsorbent needs to be replaced or regenerated regularly, otherwise the adsorption efficiency will be reduced. A single waste gas treatment method is not only difficult to thoroughly treat the above components, but also cannot recycle reusable paint particles, which ultimately affects the green and environmentally friendly development of the paint industry. Summary of the invention

[0021] In view of the problems existing in the background technology, a waste gas treatment device for paint production is proposed. Through the coordination of various structures in the technical scheme, three waste gas treatment processes are completed in sequence, so that the entire paint waste gas treatment process has good connectivity, diverse methods, and efficient and long-lasting treatment, which also makes paint production more green and environmentally friendly.

[0022] The present invention proposes a waste gas treatment device for paint production, comprising a treatment cylinder, an adsorption pipe, a slag collection component and a filter component. The upper and lower ends of the treatment cylinder are open, and two groups of ventilation components are arranged inside, one above and one below; ventilation channels and electrolytic regeneration channels are alternately arranged on the two groups of ventilation components, and an adsorption chamber is formed between the two groups of ventilation components; multiple groups of adsorption pipes are arranged in the adsorption chamber, and adsorbents are filled inside, and the ventilation channels and electrolytic regeneration channels are alternately connected through the multiple groups of adsorption pipes. To achieve that a part of the adsorbent adsorbs the paint waste gas while the other part of the adsorbent is adsorbed and regenerated by electrolysis; the slag collection component is located on the bottom opening of the treatment cylinder, and a sedimentation chamber is formed between the lower ventilation component; the paint waste gas enters the sedimentation chamber through the air inlet pipe, and the sedimentation chamber is filled with absorption solution; the filter component is located on the top opening of the treatment cylinder, and a filter chamber is formed between the upper ventilation component; the paint waste gas is solidified by light in the filter chamber on the one hand, and the paint waste gas is intercepted by the filter carrier on the other hand; the filtered waste gas finally leaves from the outlet.

[0023] Preferably, the slag collecting assembly includes a slag collecting pan detachably arranged on the open lower end of the processing cylinder; the mounting seat is located at the center of the slag collecting pan, a slag collecting cavity is left between the mounting seat and the side wall of the slag collecting pan, and an air outlet seat is arranged on the top of the mounting seat; the air inlet pipe passes through the mounting seat from the bottom and is connected with the air outlet hole on the air outlet seat; a rotating scraper frame is arranged on the air outlet seat; a pair of scraper frames clean the air outlet seat, and a second scraper frame is arranged at the bottom; the second scraper frame cleans the slag collecting cavity; a slag discharge pipe connected to the slag collecting cavity is arranged at the bottom of the slag collecting pan, and the upper end is detachably connected to the processing cylinder.

[0024] Preferably, the two sets of ventilation components are double-layer structures, with the opposite sides being rotating plates and the other sides being fixed plates; the rotating plates and adsorption pipes of the two sets of ventilation components are driven to rotate synchronously by the rotating shaft to switch the ventilation channel and the electrolysis regeneration channel.

[0025] Preferably, a plurality of groups of mounting holes one are arranged on the periphery of the rotating plate, and a mounting hole two is arranged in the center; the mounting hole one is connected to the adsorption pipe, and a baffle with a cutout is arranged in the mounting hole one; the mounting hole two is used to connect the rotating shaft; the mounting hole three corresponding to the mounting holes one by one is arranged on the periphery of the fixed plate; the electrodes and the ventilators are arranged in the mounting hole three in a one-to-one correspondence; the electrodes are a retractable structure, and the electrodes at the upper and lower ends are matched in pairs, and are arranged with one positive and one negative at the upper and lower ends; the mounting hole three on which the electrodes are installed is an electrolysis regeneration channel; the ventilators at the upper and lower ends are matched in pairs, and are arranged with air intake at the lower end and air outlet at the upper end; the mounting hole three on which the ventilator is installed is a ventilation channel.

[0026] Preferably, an air collecting pump corresponding to the electrolytic regeneration channel is arranged on the fixed plate; the air inlet end of the air collecting pump is connected to the electrolytic regeneration channel through the air collecting hole, and the air outlet end is connected to the air collecting cylinder.

[0027] Preferably, the electrolytic regeneration channel and the ventilation channel are alternately arranged around the periphery of the rotating shaft; multiple groups of adsorption pipes are arranged, and the multiple groups of adsorption pipes are equally spaced around the periphery of the rotating shaft and are arranged at an angle of 15° in the clockwise direction; two adjacent groups of adsorption pipes, one group has its two ends connected to the electrolytic regeneration channel, and the other group has its two ends connected to the ventilation channel.

[0028] Preferably, the adsorbent is made of activated carbon material; the adsorption pipe is made of ceramic material; and an infrared light emitter is arranged on the rotating shaft, which can pass through the adsorption pipe and heat and regenerate the adsorbent.

[0029] Preferably, the filter assembly includes a filter cover; the upper and lower ends of the filter cover are open, the lower end of the filter cover is detachably connected to the processing cylinder, the upper end of the filter cover is provided with a filter element for mounting the filter carrier and connected to the air outlet, and a light curing element is also provided inside the filter cover.

[0030] Preferably, the filter element includes a filter cartridge; the filter cartridge is rotatably mounted on the upper cover opening of the filter cover, the upper end extends out of the cover opening and is provided with a limiting ring, the lower end is provided with a detachable base, the side wall is provided with a through groove, and a filter carrier is provided inside; the filter carrier is the filter element; the air outlet is located in the limiting ring.

[0031] Preferably, the light-curing member is a plurality of groups of parallelly arranged annular light strips, which emit ultraviolet light and infrared light respectively.

[0032] Compared with the prior art, the present invention has the following beneficial technical effects: a sedimentation chamber, an adsorption chamber and a filter chamber are provided, which are easy to install and disassemble and have good sealing performance. The slag collecting component of the sedimentation chamber absorbs and precipitates the waste gas through the absorption solution, and cooperates with the scraper frame 1 and the scraper frame 2 for cleaning, so as to realize the separation and recovery of the paint waste residue. The double-layer ventilation component in the adsorption chamber cooperates with the inclined adsorption pipe, and the adsorption pipe is driven to rotate by the rotating plate, so that multiple groups of adsorption pipes are alternately connected to the ventilation channel and the electrolytic regeneration channel, so that the adsorbent in one part of the adsorption pipe absorbs the paint waste gas while the adsorbent in the other part of the adsorption pipe is electrolytically regenerated, and the adsorption effect of the adsorbent is guaranteed without affecting the progress of the waste gas treatment. The filter element and the light curing element in the filter element in the filter chamber cooperate, and the residual paint components in the waste gas are cured by selecting a suitable light source according to the characteristics of the paint, so that they can be better filtered and intercepted by the filter element, thereby improving the filtering effect. Through the above-mentioned structural cooperation, three waste gas treatment processes are completed in sequence, so that the whole paint waste gas treatment process has good connection, diverse methods, and efficient and long-lasting treatment, and also makes the paint production more green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the external structure of the waste gas treatment device for paint production in the present invention;

[0034] Figure 2It is a cross-sectional view of the waste gas treatment device for paint production in the present invention;

[0035] Figure 3 A top view of a slag collection assembly in the present invention;

[0036] Figure 4 It is a bottom view of the slag collection assembly of the present invention;

[0037] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0038] Figure 6 It is a schematic diagram of the combined structure of the adsorption pipe and the ventilation component in the present invention;

[0039] Figure 7 It is a structural schematic diagram of the rotating plate in the present invention;

[0040] Figure 8 It is a structural schematic diagram of one side of the fixing plate in the present invention;

[0041] Fig. 9 It is a structural schematic diagram of the other side of the fixing plate in the present invention;

[0042] Fig.10 It is a schematic diagram of the structure of the adsorption pipeline and the rotating shaft in the present invention;

[0043] Fig.11 It is a split cross-sectional view of the filter assembly in the present invention;

[0044] Fig.12 for Figure 2 Enlarged view of point B in the middle;

[0045] Fig.13 for Figure 2 Enlarged view of center C.

[0046] Reference numerals: 1, treatment cylinder; 101, sedimentation chamber; 102, filter chamber; 103, adsorption chamber; 2, slag collection assembly; 201, air inlet pipe; 202, slag collection plate; 203, mounting seat; 204, air outlet seat; 205, air outlet; 206, scraper frame 1; 207, scraper frame 2; 208, slag discharge pipe; 3, filter assembly; 301, air outlet; 302, filter cover; 303, base; 304, filter element; 305, filter element; 306, limit ring; 307, cover mouth; 308, light-cured component; 4, ventilation assembly; 401, rotating plate; 402, fixed plate; 403, infrared light emitter; 404, rotating shaft; 405, mounting hole one; 406, baffle; 407, mounting hole two; 408, mounting hole three; 409, ventilator; 410, electrode; 411, air collecting pump; 412, air collecting hole; 413, motor two; 414, air collecting cylinder; 5, adsorption pipeline. DETAILED DESCRIPTION

[0047] Embodiment 1

[0048] like Figure 1-Figure 2 As shown, a waste gas treatment device for paint production proposed by the present invention includes a treatment cylinder 1, an adsorption pipe 5, a slag collection component 2 and a filter component 3. The upper and lower ends of the treatment tube 1 are open, and two groups of ventilation components 4 are arranged one above the other inside; ventilation channels and electrolytic regeneration channels are alternately arranged on the two groups of ventilation components 4, and an adsorption chamber 103 is formed between the two groups of ventilation components 4; multiple groups of adsorption pipes 5 are arranged in the adsorption chamber 103, and adsorbents are filled inside, and the multiple groups of adsorption pipes 5 rotate as a whole, alternately connecting the ventilation channels and the electrolytic regeneration channels, so that a part of the adsorbent adsorbs the paint waste gas while the other part of the adsorbent is adsorbed and regenerated by electrolysis; the slag collecting component 2 is located on the bottom opening of the treatment tube 1, and a sedimentation chamber 101 is formed between the ventilation component 4 at the lower end; the paint waste gas enters the sedimentation chamber 101 through the air inlet pipe 201, and the sedimentation chamber 101 is filled with an absorption solution; the filter component 3 is located on the top opening of the treatment tube 1, and a filter chamber 102 is formed between the ventilation component 4 at the upper end; the paint waste gas is solidified by light on the one hand, and the paint waste gas is intercepted by the filter carrier on the other hand; the filtered waste gas finally leaves from the outlet 301.

[0049] like Figure 3-Figure 5 As shown, the slag collecting component 2 includes a slag collecting plate 202 detachably arranged on the open lower end of the processing tube 1; the mounting seat 203 is located at the center of the slag collecting plate 202, and a slag collecting cavity is left between the mounting seat 203 and the side wall of the slag collecting plate 202, and an air outlet seat 204 is arranged on the top of the mounting seat 203; the air inlet pipe 201 passes through the mounting seat 203 from the bottom, and is connected with the air outlet hole 205 on the air outlet seat 204; the air outlet seat 204 is provided with a motor 1 and a scraper frame 1 206 driven to rotate by the motor 1; the scraper frame 1 206 cleans the air outlet seat 204, and a scraper frame 207 is arranged at the bottom; the scraper frame 207 cleans the slag collecting cavity; a slag discharge pipe 208 connected to the slag collecting cavity is arranged at the bottom of the slag collecting plate 202, and the upper end is detachably connected to the processing tube 1; specifically, it can be a threaded connection, which is convenient for installation and disassembly, and can also ensure the sealing and reduce air leakage of the device.

[0050] It should be further explained that the slag collecting chamber is annular, and the scraper frame 207 is a U-shaped structure matching the slag collecting chamber. The paint slag in the slag collecting chamber is scraped off by rotation to assist it to enter the slag discharge pipe 208 with a valve.

[0051] It should be further explained that the air outlet seat 204 is provided with a conical surface which is small at the top and large at the bottom; the air outlet hole 205 is located on the conical surface; the scraper frame 206 is a trapezoidal structure matching the conical surface, and the paint residue on the conical surface can be scraped off by rotation to assist it to enter the residue collecting chamber.

[0052] The paint waste gas enters the sedimentation chamber 101 and enters the absorption solution through the air outlet 205. The absorption solution can be water, and the pollutants in the paint waste gas are absorbed by using the solubility of the pollutants in the water. The absorption solution can be an alkaline solution, such as sodium hydroxide solution, calcium hydroxide solution, etc., which can react with the acidic organic matter in the paint waste gas to neutralize it and absorb it. The absorption solution can be an organic agent, such as diesel, sodium dodecylbenzene sulfonate, alcohol, etc., and the organic solvent absorbs organic matter such as toluene, xylene, benzene, etc. by using the similarity and solubility of these solvents with toluene, xylene, benzene, etc. Some paint residues that are insoluble in the solution are precipitated and enter the residue collection chamber. Scraper rack 1 206 and scraper rack 2 207 can not only clean the paint residue, but also disrupt the airflow and enhance the effect of gas and absorption solution.

[0053] If paint residue is discharged directly without treatment, it will cause environmental pollution, such as contaminating soil and water sources, affecting ecological balance and human health. Paint residue contains valuable components, which can be recycled to achieve resource reuse and reduce production costs.

[0054] like Figure 6 As shown, the two groups of ventilation components 4 are double-layer structures, with the opposite sides being the rotating plates 401 and the other sides being the fixed plates 402; the rotating shaft 404 is driven by the motor 2 413 to drive the rotating plates 401 of the two groups of ventilation components 4 and the adsorption pipes 5 to rotate synchronously, switching the ventilation channel and the electrolysis regeneration channel.

[0055] like Figure 7 As shown, the outer periphery of the rotating plate 401 is provided with a plurality of groups of mounting holes 1 405, and the center is provided with a mounting hole 2 407; the mounting hole 1 405 is connected to the adsorption pipe 5, and a baffle 406 with a cutout is provided in the mounting hole 1 405;

[0056] It should be further explained that when the pressure on the spoiler 406 reaches a certain value, the cutout opens; the cutout is cross-shaped;

[0057] The second mounting hole 407 is used to connect the rotating shaft 404; the rotating plate 401 can be driven to rotate by rotating the rotating shaft 404.

[0058] like Figure 8 As shown, the outer periphery of the fixing plate 402 is provided with mounting holes 408 corresponding to the mounting holes 405 one to one; the electrodes 410 and the ventilators 409 are arranged in the mounting holes 408 one to one.

[0059] The electrode 410 is a retractable structure, and the electrodes 410 at the upper and lower ends are matched in pairs and are set to be one positive and one negative at the upper and lower ends; the mounting hole three 408 on which the electrode 410 is installed is an electrolytic regeneration channel; when the electrolytic regeneration channel and the mounting hole one 405 are connected, since the head end of the electrode 410 is a retractable structure, the incision of the baffle 406 is pushed open by movement to contact the filled adsorbent inside the adsorption pipe 5, and the saturated adsorbent is electrolyzed by electrifying the upper and lower ends to regenerate it.

[0060] The ventilators 409 at the upper and lower ends are matched in pairs and are arranged so that air is taken in at the lower end and air is exhausted at the upper end; the mounting hole three 408 on which the ventilator 409 is mounted is a ventilation channel; when the ventilation channel is connected to the mounting hole one 405, the ventilator 409 at the lower end takes in air and the ventilator 409 at the upper end exhausts air, and the cutout of the baffle 406 opens under the action of wind pressure, and the exhaust gas enters the interior of the adsorption pipe 5 and is adsorbed and fixed by the filled adsorbent.

[0061] like Fig. 9 As shown, a gas collecting pump 411 corresponding to the electrolytic regeneration channel is provided on the fixed plate 402; the gas inlet end of the gas collecting pump 411 is connected to the electrolytic regeneration channel through the gas collecting hole 412, and the gas outlet end is connected to the gas collecting cylinder 414. The gas collecting cylinder 414 collects the gas released during the electrolytic regeneration by connecting all the electrolytic regeneration channels to avoid secondary pollution.

[0062] like Fig.10 As shown, the electrolytic regeneration channel and the ventilation channel are alternately arranged around the outer periphery of the rotating shaft 404; multiple groups of adsorption pipes 5 are arranged, and the multiple groups of adsorption pipes 5 are equally spaced around the outer periphery of the rotating shaft 404, and are arranged at an angle of 15° in the clockwise direction; two adjacent groups of adsorption pipes 5, one group is connected to the electrolytic regeneration channel at both ends, and the other group is connected to the ventilation channel at both ends.

[0063] When part of the adsorption pipe 5 is connected to the ventilation channel, air is taken in through the lower end fan 409, and air is discharged through the upper end fan 409. Under the action of wind pressure, the cutout of the baffle 406 opens, and the exhaust gas enters the interior of the adsorption pipe 5 and is adsorbed and fixed by the filled adsorbent. By setting the adsorption pipe 5 to be inclined, the adsorption path can be extended, thereby improving the efficiency of adsorption. After adsorption is saturated, the adsorption pipe 5 rotates with the rotating shaft 404 to be opposite to the electrolytic regeneration channel. At this time, the unloaded adsorption pipe 5 rotates to be opposite to the ventilation channel. The electrode 410 expands and contracts, pushing the cutout of the baffle 406 to open, so as to contact the filled adsorbent inside the adsorption pipe 5, and by electrifying the upper and lower ends, the electrolytic saturated adsorbent is regenerated. The cycle is repeated in sequence, so that the adsorbent always maintains its adsorption performance.

[0064] It should be further explained that the adsorbent is made of activated carbon material; the adsorption pipe 5 is made of ceramic material; and the rotating shaft 404 is provided with an infrared light emitter 403 which can pass through the adsorption pipe 5 and heat and regenerate the adsorbent.

[0065] Activated carbon is a porous carbon-containing substance with a highly developed pore structure and a huge specific surface area, which makes it have a strong adsorption capacity. Activated carbon has a strong adsorption capacity for inorganic or organic substances in gases and solutions, as well as colloidal substances and microorganisms. In the treatment of paint waste gas, activated carbon is often used as an adsorbent to adsorb paint particles and organic substances in the waste gas on the surface through physical adsorption, thereby purifying the waste gas.

[0066] Ceramic is an inorganic non-metallic material with high thermal stability, high hardness and good insulation properties. Its internal structure and chemical composition make ceramics have a certain absorption capacity for infrared light, especially when the wavelength of infrared light matches the absorption band of ceramic materials, the absorption effect is better. When infrared light irradiates the surface of ceramics, ceramics absorb the energy of infrared light and convert it into heat energy. As the irradiation time increases and the intensity of infrared light increases, the temperature of the ceramics will gradually increase.

[0067] Activated carbon will gradually lose its adsorption capacity during use and needs to be regenerated. Infrared light heating can desorb the adsorbate in the activated carbon on the one hand, and dry the activated carbon on the other hand, thereby activating its adsorption capacity.

[0068] like Figure 10-13 As shown, the filter assembly 3 includes a filter cover 302; the filter cover 302 has openings at the upper and lower ends, and the lower end of the filter cover 302 is detachably connected to the processing tube 1, which can be specifically a threaded connection. The threaded connection method is convenient for installation and disassembly, and can also ensure sealing and reduce air leakage of the device. A filter element 304 is arranged at the upper end of the filter cover 302, and a light curing element 308 is also arranged inside the filter cover 302.

[0069] The filter element 304 includes a filter cartridge; the filter cartridge is rotatably mounted on the upper cover opening 307 of the filter cover 302, the upper end extends out of the cover opening 307 and is provided with a limit ring 306, the lower end is provided with a detachable base 303, the side wall is provided with a through groove, and a filter carrier is provided inside.

[0070] It should be further explained that the filter carrier is the filter element 305 , which filters the exhaust gas entering the filter chamber 102 .

[0071] It should be further explained that the gas outlet 301 is located inside the limiting ring 306, and the processed gas is finally discharged from here.

[0072] It should be further explained that a slot for engaging the gas collecting cylinder 414 is provided on the base 303 to ensure the stability of the fixed plate 402 when the rotating plate 401 rotates. The detachable base 303 also facilitates the replacement of the filter element 305.

[0073] The light curing member 308 is a plurality of parallelly arranged annular light strips, which emit ultraviolet light and infrared light respectively.

[0074] Ultraviolet curing technology mainly uses ultraviolet rays to irradiate paint, stimulate the photosensitizer in the paint, generate free radicals, and then initiate a polymerization reaction to achieve rapid curing of the paint; infrared curing technology uses infrared rays to irradiate paint, causing the solvent in it to evaporate quickly, while promoting the cross-linking reaction of paint molecules, thereby achieving the purpose of curing;

[0075] Different types of paints have different requirements for curing light sources. In actual work, a suitable light source can be selected according to the characteristics of the paint. When the exhaust gas enters the filter chamber 102, the residual paint components in the exhaust gas can be cured under light so that they can be better filtered and intercepted by the filter element 305 after passing through the through slot.

[0076] Embodiment 2

[0077] This embodiment proposes a method for treating waste gas from paint production, using the waste gas treatment device for paint production in Embodiment 1, and the treatment steps are as follows:

[0078] S1. Pretreatment: before treating the exhaust gas, the infrared light emitter 403 is started, and the activated carbon in the surrounding adsorption pipe 5 is heated and activated by rotating the rotating shaft 404;

[0079] S2, primary treatment: the paint waste gas enters the sedimentation chamber 101 from the air inlet pipe 201, and enters the absorption solution through the air outlet 205; the absorption solution can absorb part of the paint waste gas and precipitate the paint waste residue at the same time; the scraper frame 1 206 and the scraper frame 2 207 rotate, on the one hand, to clean the paint residue, on the other hand, to disrupt the airflow;

[0080] S3, secondary treatment and adsorption regeneration: adjust the rotation plate 401 to rotate so that part of the adsorption pipe 5 is connected to the ventilation channel, and the air enters through the lower end fan 409, and the upper end fan 409 discharges the air. Under the action of wind pressure, the cutout of the baffle 406 opens, and the waste gas enters the inside of the adsorption pipe 5 and is adsorbed and fixed by the filled adsorbent; after adsorption saturation, the adsorption pipe 5 rotates with the rotating shaft 404 to be opposite to the electrolytic regeneration channel, and the unloaded adsorption pipe 5 rotates to be opposite to the ventilation channel; the electrode 410 expands and contracts, pushing the cutout of the baffle 406 to open, so as to contact the filled adsorbent inside the adsorption pipe 5, and by electrifying the upper and lower ends, the saturated adsorbent is electrolyzed to regenerate it;

[0081] S4, three-stage treatment: select a suitable light source according to the characteristics of the paint, the exhaust gas enters the filter chamber 102, the residual paint components in the exhaust gas are solidified under the light, and then filtered and intercepted by the filter element 305, and the gas finally leaves from the outlet 301.

[0082] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A waste gas treatment device for paint production, characterized in that: include: The treatment cylinder (1) is open at the upper and lower ends, and two sets of ventilation components (4) are arranged inside the treatment cylinder (1) one above the other; ventilation channels and electrolytic regeneration channels are alternately arranged on the two sets of ventilation components (4), and an adsorption chamber (103) is formed between the two sets of ventilation components (4); Adsorption pipes (5), multiple groups of adsorption pipes (5) are arranged in the adsorption chamber (103), the interior of which is filled with adsorbent, and the multiple groups of adsorption pipes (5) rotate as a whole, alternately connecting the ventilation channel and the electrolytic regeneration channel, so that a part of the adsorbent adsorbs the paint waste gas while another part of the adsorbent is adsorbed and regenerated by electrolysis; A slag collecting component (2), the slag collecting component (2) is located on the bottom opening of the treatment cylinder (1), and forms a sedimentation chamber (101) between the slag collecting component (2) and the ventilation component (4) at the lower end; the paint waste gas enters the sedimentation chamber (101) through the air inlet pipe (201), and the sedimentation chamber (101) is filled with an absorption solution; And a filter assembly (3), the filter assembly (3) is located on the top opening of the treatment cylinder (1), and forms a filter chamber (102) between the filter assembly (3) and the ventilation assembly (4) at the upper end; on the one hand, the paint waste gas is solidified by light in the filter chamber (102), and on the other hand, the paint waste gas is intercepted by the filter carrier; the filtered waste gas finally leaves from the outlet (301).

2. The waste gas treatment device for paint production according to claim 1, characterized in that: The slag collecting assembly (2) comprises a slag collecting plate (202) detachably arranged on the open lower end of the processing cylinder (1); The mounting seat (203) is located at the center of the slag collecting plate (202), and a slag collecting cavity is left between the mounting seat (203) and the side wall of the slag collecting plate (202). An air outlet seat (204) is arranged on the top of the mounting seat (203); the air inlet pipe (201) passes through the mounting seat (203) from the bottom and is connected to the air outlet hole (205) on the air outlet seat (204); A rotating scraper frame 1 (206) is arranged on the gas outlet seat (204); the scraper frame 1 (206) cleans the gas outlet seat (204); a scraper frame 2 (207) is arranged at the bottom; the scraper frame 2 (207) cleans the slag collecting chamber; A slag discharge pipe (208) communicating with the slag collecting cavity is provided at the bottom of the slag collecting tray (202), and the upper end thereof is detachably connected to the processing cylinder (1).

3. The waste gas treatment device for paint production according to claim 1, characterized in that: The two groups of ventilation components (4) are double-layer structures, with the opposite sides being both rotating plates (401) and the other sides being both fixed plates (402); the rotating plates (401) and the adsorption pipes (5) of the two groups of ventilation components (4) are driven to rotate synchronously by the rotating shaft (404) to switch the ventilation channel and the electrolytic regeneration channel.

4. The waste gas treatment device for paint production according to claim 3, characterized in that: The outer periphery of the rotating plate (401) is provided with a plurality of groups of first mounting holes (405), and the center is provided with a second mounting hole (407); The first mounting hole (405) is connected to the adsorption pipe (5), and a baffle (406) with a cutout is arranged in the first mounting hole (405); The second mounting hole (407) is used to connect the rotating shaft (404); The outer periphery of the fixing plate (402) is provided with a mounting hole three (408) corresponding to the mounting hole one (405); the electrode (410) and the ventilator (409) are arranged in the mounting hole three (408) in a one-to-one correspondence; The electrode (410) is a retractable structure. The electrodes (410) at the upper and lower ends are matched in pairs and are arranged with one positive and one negative at the upper and lower ends. The mounting hole 3 (408) where the electrode (410) is mounted is an electrolysis regeneration channel. The ventilators (409) at the upper and lower ends are matched in pairs and are arranged so that air is inletted at the lower end and outletd at the upper end; the third mounting hole (408) on which the ventilator (409) is mounted is a ventilation channel.

5. The waste gas treatment device for paint production according to claim 4, characterized in that: The fixed plate (402) is provided with an air collecting pump (411) corresponding to the electrolytic regeneration channel one by one; the air inlet end of the air collecting pump (411) is connected to the electrolytic regeneration channel through the air collecting hole (412), and the air outlet end is connected to the air collecting cylinder (414).

6. The waste gas treatment device for paint production according to claim 4, characterized in that: The electrolytic regeneration channel and the ventilation channel are alternately arranged around the outer circumference of the rotating shaft (404); a plurality of adsorption pipes (5) are arranged in groups, and the plurality of adsorption pipes (5) are arranged at equal intervals around the outer circumference of the rotating shaft (404) and are arranged in a clockwise direction with an inclination of (15) degrees; two adjacent groups of adsorption pipes (5), one group has two ends connected to the electrolytic regeneration channel, and the other group has two ends connected to the ventilation channel.

7. The waste gas treatment device for paint production according to claim 6, characterized in that: The adsorbent is made of activated carbon material; the adsorption pipe (5) is made of ceramic material; and an infrared light emitter (403) is arranged on the rotating shaft (404) and can pass through the adsorption pipe (5) and heat and regenerate the adsorbent.

8. The waste gas treatment device for paint production according to claim 1, characterized in that: The filter assembly (3) comprises a filter cover (302); the filter cover (302) is open at the upper and lower ends, the lower end of the filter cover (302) is detachably connected to the processing cylinder (1), the upper end of the filter cover (302) is provided with a filter element (304) for mounting a filter carrier and connected to the air outlet (301), and a light curing element (308) is also provided inside the filter cover (302).

9. The waste gas treatment device for paint production according to claim 8, characterized in that: The filter element (304) comprises a filter cartridge; the filter cartridge is rotatably mounted on the upper cover opening of the filter cover (302), the upper end of the filter cartridge extends out of the cover opening and is provided with a limit ring (306), the lower end is provided with a detachable base (303), the side wall is provided with a through groove, and a filter carrier is provided inside; The filter carrier is the filter element (305); The air outlet (301) is located inside the limiting ring (306).

10. The waste gas treatment device for paint production according to claim 8, characterized in that: The light curing member (308) is a plurality of parallelly arranged annular light strips, which emit ultraviolet light and infrared light respectively.

Images