A printing waste gas purification device for printing production

Abstract

The present invention discloses a printing waste gas purification device for printing production, which relates to the technical field of waste gas treatment devices. It includes a purifier housing and a filtering mechanism. A cleaning mechanism and a photo-oxygen catalytic mechanism are arranged outside the filtering mechanism. A driving mechanism is arranged at the top of the purifier housing. The purifier housing includes an air inlet cylinder and a maintenance cover. The maintenance cover is fixedly installed at the top of the air inlet cylinder. A maintenance ladder is arranged on the front end face of the air inlet cylinder. An air inlet and an air outlet are respectively arranged on the left and right sides of the air inlet cylinder. A slag discharge port is arranged at the bottom of the air inlet cylinder. The filtering mechanism includes a filtering cylinder and a cover. Activated carbon particles are filled in the filtering cylinder. A material turning paddle for stirring the activated carbon particles is arranged on the cover. The present invention has the advantages of efficient purification, extending the service life of adsorption materials, reducing operating costs and being easy to maintain, and solves the problems of incomplete purification, insufficient utilization of activated carbon, easy blockage of filtering components and single treatment means of traditional devices.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment devices, and particularly to a printing waste gas purification device for printing product production. Background Art

[0002] In the printing industry, especially during the printing process using solvent-based inks or coatings, a certain amount of printing waste gas will be released. These waste gases usually contain volatile organic compounds (such as benzene, alcohols, esters, etc.), particulate matter, and other pollutants harmful to the environment and human health. In order to comply with increasingly strict environmental protection regulations and protect the health of employees, these waste gases must be effectively treated.

[0003] Traditional printing waste gas purification devices have many defects. For example, in the common rectangular filter plate filtration method, the contact area between the waste gas and the filter medium is limited, and local adsorption saturation is likely to occur, resulting in poor filtration effect, incomplete purification, and inability to meet increasingly strict environmental protection emission standards. At the same time, the activated carbon on the windward side inside the filter plate of the traditional device adsorbs saturation too quickly, while the activated carbon on the leeward side is blocked and cannot fully adsorb harmful substances in the waste gas, making the service life of the activated carbon short, frequent replacement, increasing the operation cost and maintenance workload. In addition, there are also deficiencies in the cleaning and maintenance of the filtering components. Dust and particles are easy to accumulate on the surface of the filtering components, clogging the filter holes, reducing air permeability and filtration efficiency, and the existing waste gas purification device has a single means and cannot completely adsorb gases containing organic solvents. Therefore, a printing waste gas purification device for printing product production is needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a printing waste gas purification device for printing product production, which has the advantages of efficient purification, extended service life of adsorption materials, reduced operation cost, and easy maintenance, and solves the problems of incomplete purification of traditional devices, insufficient utilization of activated carbon, easy clogging of filtering components, and single treatment means.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A printing waste gas purification device for printing product production, including a purifier housing and a filtering mechanism, a cleaning mechanism and a photo-oxygen catalytic mechanism are arranged outside the filtering mechanism, and a driving mechanism is arranged at the top of the purifier housing;

[0006] The purifier housing includes an air inlet cylinder and a maintenance cover. The maintenance cover is fixedly installed on the top of the air inlet cylinder. A maintenance ladder is arranged on the front end face of the air inlet cylinder. An air inlet and an air outlet are respectively arranged on the left and right sides of the air inlet cylinder, and a slag discharge port is arranged at the bottom of the air inlet cylinder;

[0007] The filtering mechanism includes a filtering cylinder and a cover. Activated carbon particles are filled in the filtering cylinder. A turning paddle for stirring the activated carbon particles is arranged on the cover. The filtering cylinder is installed in the purifier housing and is rotatably connected thereto;

[0008] The photocatalytic oxidation mechanism includes a catalytic metal ring and a lamp holder. The catalytic metal ring is fixedly installed on the cleaning mechanism. The lamp holder is fixedly installed on the driving mechanism;

[0009] The cleaning mechanism includes an outer cleaning rod, an inner cleaning rod and a connecting plate. The cleaning mechanism is installed on the outside of the filtering cylinder;

[0010] The driving mechanism includes a driving motor, a connecting shaft sleeve and a driving shaft. The driving motor is fixedly installed on the maintenance cover. The connecting shaft sleeve is fixedly installed on the output shaft of the driving motor. The driving shaft is detachably installed on the connecting shaft sleeve.

[0011] Preferably, as a printing waste gas purification device for printing product production according to the present invention, the filtering cylinder is a cylindrical hollow structure. The side surface of the filtering cylinder is provided with first filtering holes. Guide columns that fit the filtering cylinder are provided on the front end surface and the rear end surface of the inner wall of the air inlet cylinder. The turning paddle includes a central shaft and paddle blades. The paddle blades are two groups of arc-shaped metal plates that are centrosymmetric. The top of the central shaft passes through the cover and is rotatably connected thereto. The turning paddles are installed on the cover in an equidistant circumferential array.

[0012] Preferably, as a printing waste gas purification device for printing product production according to the present invention, the side end surface of the guide column is an arc-shaped structure. The filtering cylinder is installed in the purifier housing and is rotatably connected thereto. A central plate is provided on the upper end surface of the cover. The driving shaft passes through the central plate for transmission. A gear is provided on the top of the central shaft. A limiting plate is provided on the top of the guide column. An arc-shaped rack that meshes with the gear is provided on the side surface of the limiting plate.

[0013] Preferably, as a printing waste gas purification device for printing product production according to the present invention, an arc-shaped flange for supporting the filtering cylinder is provided at the bottom of the guide column. Rollers are evenly provided on the upper end surface of the arc-shaped flange.

[0014] Preferably, as a printing waste gas purification device for printing product production according to the present invention, a guide chute is provided on the side surface of the guide column. A guide slide bar that is slidably matched with the guide chute is provided on the outer cleaning rod. The outer cleaning rod and the inner cleaning rod are fixedly installed on the upper end surface of the connecting plate. A first brush hair that fits the outer end surface of the outside of the filtering cylinder is provided on the outer cleaning rod. A second brush hair that fits the outer end surface of the inside of the filtering cylinder is provided on the inner cleaning rod. The guide column is located above the slag discharge port.

[0015] Preferably, for the printing waste gas purification device in the production of printed matter according to the present invention, a reciprocating lead screw is provided at the bottom of the drive shaft, and a screw hole matching the reciprocating lead screw is provided at the center of the connecting plate.

[0016] Preferably, for the printing waste gas purification device in the production of printed matter according to the present invention, the catalytic metal ring has a circular hollow structure, honeycomb holes are provided on the surface of the catalytic metal ring, dark grooves are provided between adjacent honeycomb holes, and the lamp holder includes an ultraviolet lamp and a reflector.

[0017] Preferably, for the printing waste gas purification device in the production of printed matter according to the present invention, the drive motor is fixedly installed on the maintenance cover. The number of the filter cylinders and the drive shafts is two. The two groups of drive shafts are driven by a synchronous belt and a synchronous pulley. A connecting shaft sleeve is fixedly installed on the output shaft of the drive motor. A hexagonal column is provided at the top of the drive shaft. A first hexagonal socket hole for sliding cooperation with the hexagonal column is provided on the lower end surface of the connecting shaft sleeve, and a second hexagonal socket hole for sliding cooperation with the hexagonal column is provided at the center of the central plate.

[0018] Preferably, for the printing waste gas purification device in the production of printed matter according to the present invention, a positioning post is provided on the lower end surface of the limiting plate, a positioning hole for sliding cooperation with the positioning post is provided on the upper end surface of the guiding post, and a lifting ring is provided on the upper end surface of the maintenance cover.

[0019] Preferably, for the printing waste gas purification device in the production of printed matter according to the present invention, a slag discharge pipe is provided at the lower end of the slag discharge port, a baffle rotatably connected by a hinge is provided on the side of the slag discharge pipe, and a filter plate is provided inside the air outlet.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Through the cylindrical filter cartridge structure of the present invention, the exhaust gas passes through four - stage filtration and two - stage activated carbon purification when passing through. Compared with the traditional rectangular filter plate, this design greatly increases the contact area and contact time between the exhaust gas and the activated carbon, thus significantly improving the filtration effect and purification effect. It can more effectively remove harmful substances in the exhaust gas. The activated carbon particles filled in the filter cartridge can adsorb organic pollutants in the exhaust gas. Moreover, through the design of the turning paddle, the activated carbon particles can be continuously turned, avoiding premature adsorption saturation of the activated carbon near the filter screen, making the consumption of activated carbon more uniform, ensuring the efficient utilization of activated carbon throughout the filter cartridge, extending the replacement cycle of the activated carbon, reducing the operating cost. The filter cartridge can rotate within the purifier housing, driven by the drive shaft to rotate, enabling each surface of the filter cartridge to evenly face the exhaust gas flow, avoiding the problem of local adsorption saturation caused by the activated carbon particles always facing one side of the air flow, further improving the uniformity of activated carbon consumption, and at the same time preventing premature local blockage of the filter cartridge, effectively extending the service life of the filter screen, reducing the maintenance frequency and cost of the equipment.

[0022] 2. The present invention is equipped with a cleaning mechanism. When the filter cartridge rotates self - clockwise, the first bristles on the outer cleaning rod can brush the outer end face of the filter cartridge, and the second bristles on the inner cleaning rod can brush the inner end face of the filter cartridge, thus sweeping the dust and particles attached to the surface of the filter cartridge to the slag discharge port, keeping the filter cartridge always highly breathable, ensuring the stability of the filtration effect, and avoiding the reduction of filtration efficiency caused by dust accumulation. The reciprocating lead screw at the bottom of the drive shaft cooperates with the connecting plate to drive the outer cleaning rod and the inner cleaning rod to slide up and down to brush the filter cartridge. This way of brushing up and down combined with the self - rotation of the filter cartridge can more thoroughly remove the granular waste residues stuck in the filter cartridge, further improving the cleaning effect and ensuring the continuous and efficient operation of the equipment.

[0023] 3. Through the catalytic metal ring in the photo - catalytic oxidation mechanism of the present invention, under the irradiation of ultraviolet lamps, organic solvents can undergo catalytic reactions and decompose into carbon dioxide and water, thus achieving deep purification of organic waste gas, further reducing the pollution degree of the waste gas. The honeycomb holes and dark groove structure design on the surface of the catalytic metal ring not only increase the contact area between the catalytic metal ring and air, improving the reaction rate, but also can shake off the water generated during the reaction process during the shaking process. And through triple treatment of filtration, photo - catalytic oxidation and activated carbon adsorption, the waste gas is treated more thoroughly, improving the environmental protection performance of the equipment.

[0024] 4. The bottom of the guide post of the present invention is provided with an arc-shaped flange and a roller, which reduces the friction between the filter cartridge and the purifier housing, makes the installation and sliding of the filter cartridge smoother, facilitates the installation and replacement of the filter cartridge, and improves the convenience of filter cartridge maintenance. At the same time, the arc-shaped flange also plays a role in positioning and supporting the filter cartridge, reducing the load pressure on the drive shaft, which is beneficial to the stable operation of the equipment. The drive motor and the drive shaft are connected in a sliding manner, and through the cooperation of the hexagonal column and the hexagonal hole, it is convenient for the assembly and disassembly of the drive mechanism, improving the convenience of equipment maintenance and repair. Moreover, the lifting ring provided on the inspection cover facilitates lifting the inspection cover and the drive motor together for maintenance, greatly shortening the equipment shutdown and maintenance time and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a top view of the present invention;

[0027] Figure 3 is the Figure 2 A-A sectional view of the present invention;

[0028] Figure 4 is the Figure 2 B-B sectional view of the present invention;

[0029] Figure 5 is a schematic diagram of the cooperation state of the filter mechanism, photocatalytic oxidation mechanism, brush sweeping mechanism and drive mechanism of the present invention;

[0030] Figure 6 is a schematic diagram of the overall structure in the open state of the inspection cover of the present invention;

[0031] Figure 7 is the Figure 6 enlarged view at C of the present invention;

[0032] Figure 8 is a schematic diagram of the structure of the cleaning mechanism of the present invention;

[0033] Figure 9 is a schematic diagram of the structure of the purifier housing of the present invention;

[0034] Figure 10 is a schematic diagram of the structure of the limiting plate of the present invention;

[0035] Figure 11 is a schematic diagram of the structure of the turning paddle of the present invention;

[0036] Figure 12 is the Figure 3 enlarged view at D of the present invention;

[0037] Figure 13 For the present invention Figure 3 Enlarged view at position E in

[0038] Figure 14 Schematic diagram of the lamp holder structure of the present invention.

[0039] In the figure: 1. Purifier housing; 101. Air inlet duct; 1011. Air inlet; 1012. Air outlet; 1013. Slag discharge port; 102. Inspection cover; 1021. Suspension ring; 103. Inspection ladder; 104. Guide post; 1041. Guide chute; 1042. Positioning hole; 1043. Arc flange; 1044. Roller; 105. Limit plate; 1051. Arc rack; 1052. Positioning post; 106. Filter plate; 107. Slag discharge pipe; 1071. Baffle; 2. Filter mechanism; 201. Filter cylinder; 2011. First filter hole; 202. Sealing cover; 2021. Central plate; 2022. Second internal hexagonal hole; 203. Turning paddle; 2031. Central shaft; 2032. Gear; 2033. Paddle blade; 20331. Second filter hole; 3. Photocatalytic oxidation mechanism; 301. Catalytic metal ring; 3011. Honeycomb hole; 3012. Dark groove; 302. Lamp holder; 3021. Ultraviolet lamp; 3022. Reflector; 4. Cleaning mechanism; 401. Outer cleaning rod; 4011. Guide slide bar; 4012. First brush; 402. Inner cleaning rod; 4021. Second brush; 403. Connecting plate; 4031. Screw hole; 5. Driving mechanism; 501. Driving motor; 502. Connecting shaft sleeve; 5021. First internal hexagonal hole; 503. Driving shaft; 5031. Hexagonal column; 5032. Reciprocating lead screw; 504. Synchronous pulley; 505. Synchronous belt. Specific embodiments

[0040] Please refer to Figures 1-14 , a printing waste gas purification device for printing production, including a purifier housing 1 and a filter mechanism 2, a cleaning mechanism 4 and a photocatalytic oxidation mechanism 3 are arranged outside the filter mechanism 2, and a driving mechanism 5 is arranged on the top of the purifier housing 1;

[0041] The purifier housing 1 includes an air inlet duct 101 and an inspection cover 102. The inspection cover 102 is fixedly installed on the top of the air inlet duct 101. An inspection ladder 103 is arranged on the front end face of the air inlet duct 101. An air inlet 1011 and an air outlet 1012 are respectively arranged on the left and right sides of the air inlet duct 101. A slag discharge port 1013 is arranged at the bottom of the air inlet duct 101;

[0042] The filter mechanism 2 includes a filter cylinder 201 and a sealing cover 202. The filter cylinder 201 is filled with activated carbon particles. A turning paddle 203 for stirring the activated carbon particles is arranged on the sealing cover 202. The filter cylinder 201 is installed in the purifier housing 1 and is rotatably connected thereto;

[0043] The photocatalytic mechanism 3 includes a catalytic metal ring 301 and a lamp holder 302. The catalytic metal ring 301 is fixedly installed on the cleaning mechanism 4, and the lamp holder 302 is fixedly installed on the drive shaft 503 of the drive mechanism 5.

[0044] The cleaning mechanism 4 includes an outer cleaning rod 401, an inner cleaning rod 402 and a connecting plate 403. The cleaning mechanism 4 is installed on the outside of the filter cylinder 201.

[0045] The drive mechanism 5 includes a drive motor 501, a connecting shaft sleeve 502 and a drive shaft 503. The drive motor 501 is fixedly installed on the maintenance cover 102. The connecting shaft sleeve 502 is fixedly installed on the output shaft of the drive motor 501. The drive shaft 503 is detachably installed on the connecting shaft sleeve 502.

[0046] Further, the filter cylinder 201 is a cylindrical hollow structure. The side surface of the filter cylinder 201 is provided with first filter holes 2011. The front end face and the rear end face of the inner wall of the air inlet cylinder 101 are provided with guide posts 104 that fit with the filter cylinder 201. The turning paddle 203 includes a central shaft 2031 and paddle blades 2033. The paddle blades 2033 are two groups of centrally symmetric arc-shaped metal plates. The paddle blades 2033 are provided with second filter holes 20331. The top of the central shaft 2031 passes through the cover 202 and is rotatably connected thereto. The turning paddles 203 are equidistantly arranged in a circumferential array on the cover 202.

[0047] The cylindrical filter cylinder 201 enables the waste gas to pass through the filter cylinder 201 for four times of filtration and two times of activated carbon purification. Compared with the traditional rectangular filter plate 106, the filtering effect and purification effect are better. The guide post 104 structures on the front and rear sides improve the fit between the filter cylinder 201 and the purifier housing 1, avoiding waste gas leakage. By arranging a number of turning paddles 203 rotatably connected in the filter cylinder 201, the activated carbon particles in the filter are turned over smoothly, avoiding premature adsorption saturation of the activated carbon near the filter screen and making the consumption of activated carbon more uniform.

[0048] Further, the side end face of the guide post 104 is a circular arc structure. The filter cylinder 201 is installed in the purifier housing 1 and is rotatably connected thereto. The upper end face of the cover 202 is provided with a central plate 2021. The drive shaft 503 passes through the central plate 2021 to drive it. The top of the central shaft 2031 is provided with a gear 2032. The top of the guide post 104 is provided with a limit plate 105. The side surface of the limit plate 105 is provided with an arc-shaped rack 1051 that meshes with the gear 2032.

[0049] The filter cartridge 201 is driven to rotate by the drive shaft 503, so that each surface of the filter cartridge 201 can face the exhaust gas flow, avoiding the activated carbon particles in the filter cartridge 201 always facing the air flow on one side, causing local adsorption saturation of the activated carbon. Further, the uniformity of activated carbon consumption is improved, and premature local blockage of the filter cartridge 201 is avoided, the service life of the filter screen is extended, and when the filter cartridge 201 rotates, the turning paddle 203 can be driven to rotate by the cooperation of the gear 2032 and the arc-shaped rack 1051.

[0050] Further, an arc-shaped flange 1043 for supporting the filter cartridge 201 is provided at the bottom of the guide post 104, and rollers 1044 are uniformly arranged on the upper end surface of the arc-shaped flange 1043.

[0051] The friction between the filter cartridge 201 and the purifier housing 1 is reduced by the rollers 1044, so that the filter cartridge 201 slides more smoothly. The filter cartridge 201 is positioned and supported by the arc-shaped flange 1043, which facilitates the installation and positioning of the drive shaft 503 and the filter cartridge 201, and reduces the load pressure on the drive shaft 503.

[0052] Further, a guide chute 1041 is provided on the side surface of the guide post 104, a guide slide 4011 slidably engaged with the guide chute 1041 is provided on the outer cleaning rod 401, the outer cleaning rod 401 and the inner cleaning rod 402 are fixedly installed on the upper end surface of the connecting plate 403, a first brush 4012 attached to the outer end surface of the outer side of the filter cartridge 201 is provided on the outer cleaning rod 401, a second brush 4021 attached to the outer end surface of the inner side of the filter cartridge 201 is provided on the inner cleaning rod 402, and the guide post 104 is located above the slag discharge port 1013.

[0053] The slidably connected filter cartridge 201 is convenient for the installation and replacement of the filter cartridge 201, and improves the convenience of maintenance of the filter cartridge 201. When the filter cartridge 201 rotates, the outer end surface of the filter cartridge 201 is brushed by the first brush 4012, and the inner end surface of the filter cartridge 201 is brushed by the second brush 4021, so as to clean the filter cartridge 201, and the dust and particles attached to the surface of the filter cartridge 201 are swept to the slag discharge port 1013, keeping the filter cartridge 201 highly breathable.

[0054] Further, a reciprocating lead screw 5032 is provided at the bottom of the drive shaft 503, and a threaded hole 4031 engaged with the reciprocating lead screw 5032 is provided at the center of the connecting plate 403.

[0055] The reciprocating lead screw 5032 is driven to rotate by the drive shaft 503, so that the reciprocating lead screw 5032 and the connecting plate 403 drive the connecting plate 403 to slide up and down reciprocally under the action of the lead screw movement, thereby driving the outer cleaning rod 401 and the inner cleaning rod 402 to slide up and down to brush the filter cartridge 201. The up-and-down brushing method, combined with the rotation of the filter cartridge 201, can completely brush off the granular waste residues stuck in the filter cartridge 201.

[0056] Further, the catalytic metal ring 301 is a circular hollow structure. The surface of the catalytic metal ring 301 is provided with honeycomb holes 3011, and dark grooves 3012 are provided between adjacent honeycomb holes 3011. The lamp holder 302 includes an ultraviolet lamp 3021 and a reflector 3022.

[0057] The catalytic metal ring 301 is irradiated by the ultraviolet lamp 3021. The catalytic metal ring 301 is made of palladium, and palladium catalyzes the organic solvent to decompose it into carbon dioxide and water. The irradiation intensity is enhanced by the reflector 3022. The lamp holder 302 is driven to rotate by the drive shaft 503, so that the line light source becomes a surface light source. Since the catalytic metal ring 301 is fixedly installed on the inner cleaning frame, when the inner cleaning frame vibrates up and down, it can drive the catalytic metal ring 301 to vibrate up and down, so that the light can pass through the honeycomb holes 3011 and irradiate inside the catalytic metal ring 301. And the structure of the dark groove 3012 increases the contact area between the catalyst metal ring and the air, improves the reaction rate, and the water generated during the reaction can be shaken off during the shaking process, further improving the purification effect of the waste gas.

[0058] Further, the drive motor 501 is fixedly installed on the maintenance cover 102. The number of the filter cartridges 201 and the drive shafts 503 is two. The two groups of drive shafts 503 are driven by a synchronous belt 505 and a synchronous pulley 504. A connecting shaft sleeve 502 is fixedly installed on the output shaft of the drive motor 501. A hexagonal column 5031 is provided at the top of the drive shaft 503. The lower end surface of the connecting shaft sleeve 502 is provided with a first internal hexagonal hole 5021 that slidably cooperates with the hexagonal column 5031. A second internal hexagonal hole 2022 that slidably cooperates with the hexagonal column 5031 is provided at the center of the central plate 2021.

[0059] The drive motor 501 drives the drive shaft 503 to rotate through the connecting shaft sleeve 502, and the drive shaft 503 drives the filter cartridge 201 to rotate through the hexagonal column 5031 and the second internal hexagonal hole 2022. The structure of the slidably connected connecting shaft sleeve 502 and the hexagonal column 5031 facilitates the assembly and disassembly of the drive mechanism 5 and improves the convenience of equipment maintenance and repair.

[0060] Further, a positioning post 1052 is provided on the lower end surface of the limit plate 105, a positioning hole 1042 slidably engaged with the positioning post 1052 is provided on the upper end surface of the guiding post 104, and a lifting ring 1021 is provided on the upper end surface of the inspection cover 102.

[0061] The limit plate 105 is installed on the upper end surface of the guiding post 104 through the sliding fit of the positioning post 1052 and the positioning hole 1042. When the filter cartridge 201 needs to be replaced, it is also convenient to quickly remove the limit plate 105, so as to facilitate the extraction of the filter cartridge 201. The lifting ring 1021 is provided on the inspection cover 102 to facilitate lifting the inspection cover 102 and the driving motor 501 together for maintenance.

[0062] Further, a slag discharge pipe 107 is provided at the lower end of the slag discharge port 1013, a baffle 1071 rotatably connected through a hinge is provided on the side surface of the slag discharge pipe 107, and a filter plate 106 is provided inside the air outlet 1012.

[0063] The slag discharge pipe 107 enables the slag discharge port 1013 to have a certain slag storage capacity. The baffle 1071 blocks the slag discharge pipe 107 to prevent continuous air leakage from the slag discharge port 1013. By providing a filter plate 106 inside the air outlet 1012 for final interception and filtration, it is avoided that there are small gaps between the filter cartridge 201 and the purifier housing 1, resulting in waste gas leakage.

[0064] When the device is in use, the filter cartridge 201 filled with activated carbon particles is inserted into the purifier housing 1, making the bottom of the filter cartridge 201 fit against the arc-shaped flange 1043 to ensure that the filter cartridge 201 fits closely with the guide post 104. And the drive shaft 503 can accurately insert into the second internal hexagonal hole 2022 of the central plate 2021 of the cover 202 of the filter cartridge 201 to achieve transmission connection. At the same time, the limit plate 105 is installed on the upper end surface of the guide post 104 through the positioning post 1052 and the positioning hole 1042, making the gear 2032 mesh with the arc-shaped rack 1051, and then the maintenance cover 102 is covered to align the connecting shaft sleeve 502 of the motor with the hexagonal column 5031. Then the drive motor 501 is started, and the output shaft of the drive motor 501 drives the drive shaft 503 to rotate through the connecting shaft sleeve 502. Since the two drive shafts 503 are driven by the synchronous belt 505 and the synchronous pulley 504, the two filter cartridges 201 will start to rotate simultaneously, enabling each surface of the filter cartridge 201 to evenly contact the waste gas flow, ensuring the efficient utilization and uniform adsorption of activated carbon. As the drive shaft 503 rotates, the reciprocating lead screw 5032 installed at its bottom will also rotate synchronously. Through the cooperation with the screw hole 4031 on the connecting plate 403, the connecting plate 403 drives the outer cleaning rod 401 and the inner cleaning rod 402 to slide up and down reciprocally, starting to conduct a preliminary cleaning of the filter cartridge 201 in preparation for the entry of waste gas. The waste gas generated by the printing factory enters the device through the air inlet 1011 of the air inlet cylinder 101. First, it passes through the rotating filter cartridge 201. When the waste gas passes through the first filter holes 2011 on the side of the filter cartridge 201, it will come into full contact with the activated carbon particles filled in the cartridge. The activated carbon adsorbs the organic pollutants and some dust particles in the waste gas, achieving preliminary purification. The waste gas preliminarily purified by the filter cartridge 201 continues to flow. At this time, the ultraviolet lamp 3021 continuously irradiates the catalytic metal ring 301. The catalytic metal ring 301 made of palladium, under the excitation of ultraviolet light, conducts a catalytic oxidation reaction on the remaining organic components such as organic solvents in the waste gas, decomposing them into carbon dioxide and water to further deeply purify the waste gas. During the waste gas treatment process, the filter cartridge 201 rotates continuously, and the turning paddle 203 continuously turns the activated carbon particles under the cooperation of the gear 2032 and the arc-shaped rack 1051, avoiding local adsorption saturation of the activated carbon;Meanwhile, the cleaning mechanism 4 is also continuously working. The bristles on the outer cleaning rod 401 and the inner cleaning rod 402 continuously brush the inner and outer end faces of the filter cartridge 201, sweeping the attached dust and particles onto the slag discharge port 1013 to maintain the air permeability and adsorption efficiency of the filter cartridge 201. When it is necessary to clean the waste residue at the slag discharge port 1013, the baffle 1071 on the side of the slag discharge pipe 107 is opened, and the waste residue will be discharged from the slag discharge port 1013 into the slag discharge pipe 107 under the action of gravity and then collected and processed. During the slag discharge process, the entry of waste gas can be appropriately stopped to avoid secondary pollution caused by the flying of waste residue. A filter plate 106 is arranged inside the air outlet 1012, and the filter plate 106 is also an activated carbon filter plate 106 for final interception and filtration to prevent small gaps from existing between the filter cartridge 201 and the purifier housing 1, resulting in waste gas leakage.;

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A printing waste gas purification device for printing production, comprising a purifier housing (1) and a filtering mechanism (2), characterized in that: Outside the filtering mechanism (2), a cleaning mechanism (4) and a photo-oxidation catalytic mechanism (3) are provided. At the top of the purifier housing (1), a driving mechanism (5) is provided; The purifier housing (1) includes an air inlet cylinder (101) and a maintenance cover (102). The maintenance cover (102) is fixedly installed on the top of the air inlet cylinder (101). On the front end face of the air inlet cylinder (101), a maintenance ladder (103) is provided. On the left and right sides of the air inlet cylinder (101), an air inlet (1011) and an air outlet (1012) are respectively provided. At the bottom of the air inlet cylinder (101), a slag discharge port (1013) is provided; The filtering mechanism (2) includes a filtering cylinder (201) and a cover (202). Activated carbon particles are filled in the filtering cylinder (201). On the cover (202), a turning paddle (203) for stirring the activated carbon particles is provided. The filtering cylinder (201) is installed in the purifier housing (1) and is rotationally connected thereto; The photo-oxidation catalytic mechanism (3) includes a catalytic metal ring (301) and a lamp holder (302). The catalytic metal ring (301) is fixedly installed on the cleaning mechanism (4). The lamp holder (302) is fixedly installed on the driving mechanism (5); The cleaning mechanism (4) includes an outer cleaning rod (401), an inner cleaning rod (402) and a connecting plate (403). The cleaning mechanism (4) is installed outside the filtering cylinder (201); The driving mechanism (5) includes a driving motor (501), a connecting shaft sleeve (502) and a driving shaft (503). The driving motor (501) is fixedly installed on the maintenance cover (102). The connecting shaft sleeve (502) is fixedly installed on the output shaft of the driving motor (501). The driving shaft (503) is detachably installed on the connecting shaft sleeve (502).

2. The printing waste gas purification device for printing product production according to claim 1, characterized in that: The filtering cylinder (201) is a cylindrical hollow structure. On the side surface of the filtering cylinder (201), a first filtering hole (2011) is provided. On the front end face and the rear end face of the inner wall of the air inlet cylinder (101), guide posts (104) that fit the filtering cylinder (201) are provided. The turning paddle (203) includes a central shaft (2031) and paddle blades (2033). The top of the central shaft (2031) passes through the cover (202) and is rotationally connected thereto. The turning paddles (203) are installed on the cover (202) at equal intervals in a circumferential array.

3. The printing waste gas purification device for printing product production according to claim 2, characterized in that: The side end face of the guide post (104) is an arc-shaped structure. The filtering cylinder (201) is installed in the purifier housing (1) and is rotationally connected thereto. On the upper end face of the cover (202), a central plate (2021) is provided. The driving shaft (503) passes through the central plate (2021) for transmission. At the top of the central shaft (2031), a gear (2032) is provided. At the top of the guide post (104), a limit plate (105) is provided. On the side surface of the limit plate (105), an arc-shaped rack (1051) that meshes with the gear (2032) is provided.

4. The printing waste gas purification device for printing product production according to claim 3, characterized in that: An arc-shaped flange (1043) for supporting the filter cartridge (201) is provided at the bottom of the guide post (104), and rollers (1044) are uniformly arranged on the upper end surface of the arc-shaped flange (1043).

5. The printing waste gas purification device for printing product production according to claim 4, characterized in that: A guide chute (1041) is provided on the side surface of the guide post (104). A guide slide bar (4011) that is slidably engaged with the guide chute (1041) is provided on the outer cleaning rod (401). The outer cleaning rod (401) and the inner cleaning rod (402) are fixedly installed on the upper end surface of the connecting plate (403). A first brush (4012) that is in contact with the outer end surface of the outer side of the filter cartridge (201) is provided on the outer cleaning rod (401). A second brush (4021) that is in contact with the outer end surface of the inner side of the filter cartridge (201) is provided on the inner cleaning rod (402). The guide post (104) is located above the slag discharge port (1013).

6. The printing waste gas purification device for printing product production according to claim 5, characterized in that: A reciprocating lead screw (5032) is provided at the bottom of the drive shaft (503), and a screw hole (4031) that is engaged with the reciprocating lead screw (5032) is provided at the center of the connecting plate (403).

7. The printing waste gas purification device for printing product production according to claim 1, wherein: The catalytic metal ring (301) has a circular ring-shaped hollow structure. Honeycomb holes (3011) are provided on the surface of the catalytic metal ring (301), and dark grooves (3012) are provided between adjacent honeycomb holes (3011). The lamp holder (302) includes an ultraviolet lamp (3021) and a reflector (3022).

8. The printing waste gas purification device for printing product production according to claim 3, characterized in that: The drive motor (501) is fixedly installed on the inspection cover (102). A connecting shaft sleeve (502) is fixedly installed on the output shaft of the drive motor (501). A hexagonal column (5031) is provided at the top of the drive shaft (503). A first hexagonal socket hole (5021) that is slidably engaged with the hexagonal column (5031) is provided on the lower end surface of the connecting shaft sleeve (502). A second hexagonal socket hole (2022) that is slidably engaged with the hexagonal column (5031) is provided at the center of the central plate (2021).

9. The printing waste gas purification device for printing product production according to claim 8, characterized in that: A positioning post (1052) is provided on the lower end surface of the limiting plate (105). A positioning hole (1042) that is slidably engaged with the positioning post (1052) is provided on the upper end surface of the guide post (104). A lifting ring (1021) is provided on the upper end surface of the inspection cover (102).

10. The printing waste gas purification device for printing product production according to claim 1, characterized in that: A slag discharge pipe (107) is provided at the lower end of the slag discharge port (1013). A baffle (1071) that is rotatably connected by a hinge is provided on the side surface of the slag discharge pipe (107). A filter plate (106) is provided inside the air outlet (1012).

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