Printing waste gas purification device for printed matter production

Abstract

The invention discloses a printing waste gas purification device for printed matter production, and relates to the technical field of waste gas treatment devices.The printing waste gas purification device comprises a purifier shell and a filtering mechanism, a sweeping mechanism and a photo-oxidation catalysis mechanism are arranged on the outer side of the filtering mechanism, a driving mechanism is arranged at the top of the purifier shell, and the purifier shell comprises an air inlet barrel and an access cover; the access cover is fixedly installed at the top of the air inlet barrel, an access ladder is arranged on the front end face of the air inlet barrel, an air inlet and an air outlet are formed in the left side and the right side of the air inlet barrel respectively, and a slag discharging opening is formed in the bottom of the air inlet barrel; and the sealing cover is provided with a material turning paddle for stirring the activated carbon particles. The device has the advantages of efficient purification, prolonged service life of an adsorption material, reduced operation cost and easiness in maintenance, and solves the problems of incomplete purification, insufficient utilization of activated carbon, easiness in blockage of a filtering part and single treatment means of a traditional device.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment devices, and in particular to a printing waste gas purification device for printed matter production. Background Art

[0002] In the printing industry, especially when using solvent-based inks or coatings, a certain amount of printing waste gas is released. These waste gases usually contain volatile organic compounds (such as benzene, alcohols, esters, etc.), particulate matter and other pollutants that are harmful to the environment and human health. In order to comply with increasingly stringent environmental 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 filtering method, the contact area between the waste gas and the filter medium is limited, and local adsorption saturation is prone to occur, resulting in poor filtering effect, incomplete purification, and failure to meet increasingly stringent environmental emission standards. At the same time, the activated carbon adsorption saturation on the windward side of the filter plate in the traditional device is too fast, while the activated carbon on the leeward side is blocked and cannot fully adsorb harmful substances in the waste gas, resulting in a short service life of the activated carbon and frequent replacement, which increases the operating cost and maintenance workload. In addition, there are also deficiencies in the cleaning and maintenance of the filter components. Dust and particles are easily accumulated on the surface of the filter components, clogging the filter holes, reducing the air permeability and filtration efficiency. The existing waste gas purification devices have a single means and cannot completely adsorb gases containing organic solvents. Therefore, a printing waste gas purification device for printed 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 printed product production, which has the advantages of efficient purification, extended service life of adsorption materials, reduced operating costs and easy maintenance, and solves the problems of incomplete purification of traditional devices, insufficient utilization of activated carbon, easy clogging of filter components and single treatment means.

[0005] To achieve the above object, the present invention provides the following technical solution: a printing waste gas purification device for printing production, comprising a purifier housing and a filtering mechanism, a cleaning mechanism and a photo-oxidation catalytic mechanism are arranged on the outside of the filtering mechanism, and a driving mechanism is arranged on the top of the purifier housing; The purifier housing includes an air inlet cylinder and an inspection cover, the inspection cover is fixedly mounted on the top of the air inlet cylinder, an inspection ladder is provided on the front end surface of the air inlet cylinder, an air inlet and an air outlet are provided on the left and right sides of the air inlet cylinder respectively, and a slag discharge port is provided at the bottom of the air inlet cylinder; The filtering mechanism comprises a filter cartridge and a sealing cover, wherein the filter cartridge is filled with activated carbon particles, and the sealing cover is provided with a stirring paddle for stirring the activated carbon particles, and the filter cartridge is installed in the purifier housing and is rotatably connected thereto; The photo-oxidation catalytic mechanism comprises a catalytic metal ring and a lamp holder, wherein the catalytic metal ring is fixedly mounted on the cleaning mechanism, and the lamp holder is fixedly mounted on the driving mechanism; The cleaning mechanism comprises an outer cleaning rod, an inner cleaning rod and a connecting plate, and the cleaning mechanism is installed on the outer side of the filter cylinder; The driving mechanism comprises a driving motor, a connecting sleeve and a driving shaft. The driving motor is fixedly mounted on the inspection cover, the connecting sleeve is fixedly mounted on the output shaft of the driving motor, and the driving shaft is detachably mounted on the connecting sleeve.

[0006] As a preferred printing waste gas purification device for printed matter production of the present invention, the filter cartridge is a cylindrical hollow structure, a first filter hole is arranged on the side of the filter cartridge, the front end face and the rear end face of the inner wall of the air inlet cylinder are provided with guide columns which are fitted with the filter cartridge, the turning paddle comprises a central axis and blades, the blades are two groups of centrally symmetrical arc-shaped metal plates, the top of the central axis passes through a cover and is rotatably connected thereto, and the turning paddles are installed on the cover in an equidistant circular array.

[0007] As a preferred printing waste gas purification device for printed matter production of the present invention, the side end face of the guide column is an arc-shaped structure, the filter cartridge is installed in the purifier housing and is rotatably connected thereto, the upper end face of the cover is provided with a center plate, the drive shaft passes through the center plate to transmit the power thereto, a gear is provided on the top of the center shaft, a limit plate is provided on the top of the guide column, and an arc-shaped rack meshing with the gear is provided on the side of the limit plate.

[0008] As a preferred printing waste gas purification device for printed matter production of the present invention, the bottom of the guide column is provided with an arc-shaped flange for supporting the filter cartridge, and the upper end surface of the arc-shaped flange is evenly provided with rollers.

[0009] As a preferred printing waste gas purification device for printed matter production of the present invention, a guide groove is arranged on the side of the guide column, and a guide slide bar slidingly matched with the guide groove is arranged on the outer cleaning rod, and the outer cleaning rod and the inner cleaning rod are fixedly mounted on the upper end surface of the connecting plate, and the outer cleaning rod is provided with a first bristle which fits with the outer end surface of the outer side of the filter cylinder, and the inner cleaning rod is provided with a second bristle which fits with the inner end surface of the filter cylinder, and the guide column is located at the upper end of the slag discharge port.

[0010] As a preferred printing waste gas purification device for printed matter production of the present invention, a reciprocating screw is provided at the bottom of the driving shaft, and a screw hole matching with the reciprocating screw is provided at the center of the connecting plate.

[0011] As a preferred printing waste gas purification device for printed matter production of the present invention, the catalytic metal ring is a hollow ring-shaped structure, the surface of the catalytic metal ring is provided with honeycomb holes, dark grooves are provided between adjacent honeycomb holes, and the lamp holder includes an ultraviolet lamp and a reflector.

[0012] As a preferred printing waste gas purification device for printed matter production of the present invention, the driving motor is fixedly mounted on the inspection cover, the number of the filter cartridge and the driving shaft is two, the two groups of driving shafts are transmitted through a synchronous belt and a synchronous wheel, a connecting sleeve is fixedly mounted on the output shaft of the driving motor, a hexagonal column is arranged on the top of the driving shaft, the lower end face of the connecting sleeve is arranged on a first inner hexagonal hole that slides with the hexagonal column, and a second inner hexagonal hole that slides with the hexagonal column is arranged at the center of the center plate.

[0013] As a preferred printing waste gas purification device for printed matter production of the present invention, the lower end face of the limit plate is provided with a positioning column, the upper end face of the guide column is provided with a positioning hole that slides with the positioning column, and the upper end face of the inspection cover is provided with a hanging ring.

[0014] As a preferred printing waste gas purification device for printed matter production of 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 on the inner side of the air outlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a cylindrical filter cartridge structure to allow the exhaust gas to undergo four filtrations and two activated carbon purifications 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, thereby significantly improving the filtering effect and purification effect, and 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, and through the design of the turning paddle, the activated carbon particles can be continuously turned over to avoid premature adsorption and saturation of the activated carbon close to the filter screen, so that the activated carbon consumption is more uniform, ensuring the efficient utilization of the activated carbon in the entire filter cartridge, extending the replacement cycle of the activated carbon, and reducing the operating cost. The filter cartridge can rotate in the purifier housing and is driven to rotate by the drive shaft so that all sides of the filter cartridge can be evenly facing the exhaust gas airflow, avoiding the problem of local adsorption saturation caused by the activated carbon particles always facing the airflow, further improving the uniformity of activated carbon consumption, and also preventing the filter cartridge from being locally blocked prematurely, effectively improving the service life of the filter screen, and reducing the maintenance frequency and cost of the equipment.

[0016] 2. The present invention is provided with a cleaning mechanism through a device. When the filter cartridge rotates, the first bristles on the outer cleaning rod can brush the outer end surface of the filter cartridge, and the second bristles on the inner cleaning rod can brush the inner end surface of the filter cartridge, thereby sweeping the dust and particles attached to the surface of the filter cartridge to the slag discharge port, so that the filter cartridge always maintains a high air permeability, ensuring the stability of the filtering effect and avoiding the decrease in filtering efficiency due to dust accumulation. The reciprocating screw at the bottom of the driving 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 up and down brushing method combined with the rotation of the filter cartridge can more thoroughly remove the particle waste stuck in the filter cartridge, further improving the cleaning effect and ensuring the continuous and efficient operation of the equipment.

[0017] 3. The present invention uses a catalytic metal ring in the photocatalytic mechanism to catalyze the organic solvent under the irradiation of ultraviolet light to decompose it into carbon dioxide and water, thereby achieving deep purification of organic waste gas and further reducing the pollution level 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 catalyst metal ring and the air and improve the reaction rate, but also can shake off the water generated in the reaction process during the shaking process. Through the triple treatment of filtration, photocatalysis and activated carbon adsorption, the waste gas treatment is more thorough, thereby improving the environmental performance of the equipment.

[0018] 4. The present invention reduces the friction between the filter cartridge and the purifier housing by providing an arc-shaped flange and a roller at the bottom of the guide column, making the installation and sliding of the filter cartridge smoother, facilitating the installation and replacement of the filter cartridge, and improving the convenience of filter cartridge maintenance. At the same time, the arc-shaped flange also plays a positioning and supporting role for the filter cartridge, reducing the load pressure of the drive shaft, which is conducive to the stable operation of the equipment. The drive motor and the drive shaft are connected in a sliding manner. Through the cooperation of the hexagonal column and the hexagonal hole, the assembly and disassembly of the drive mechanism is convenient, which improves the convenience of equipment maintenance and repair. Moreover, the lifting ring provided on the inspection cover facilitates the lifting of the inspection cover and the drive motor together for maintenance, which greatly shortens the downtime of the equipment for maintenance and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A top view of the present invention; Figure 3 For the present invention Figure 2 Middle AA section; Figure 4 For the present invention Figure 2 Middle BB section; Figure 5 It is a schematic diagram of the coordination state of the filtering mechanism, the photo-oxidation catalytic mechanism, the brushing mechanism and the driving mechanism of the present invention; Figure 6 This is a schematic diagram of the overall structure of the inspection cover of the present invention in an open state; Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle; Figure 8 It is a schematic diagram of the cleaning mechanism structure of the present invention; Fig. 9 It is a schematic diagram of the housing structure of the purifier of the present invention; Fig.10 It is a schematic diagram of the structure of the limiting plate of the present invention; Fig.11 This is a schematic diagram of the structure of the material turning paddle of the present invention; Fig.12 For the present invention Figure 3 Enlarged view of point D in the middle; Fig.13 For the present invention Figure 3 Enlarged view of point E in the middle; Fig.14 It is a schematic diagram of the lamp stand structure of the present invention.

[0020] In the figure: 1. Purifier housing; 101. Air inlet; 1011. Air inlet; 1012. Air outlet; 1013. Slag discharge port; 102. Inspection cover; 1021. Lifting ring; 103. Inspection ladder; 104. Guide column; 1041. Guide chute; 1042. Positioning hole; 1043. Arc flange; 1044. Roller; 105. Limiting plate; 1051. Arc rack; 1052. Positioning column; 106. Filter plate; 107. Slag discharge pipe; 1071. Baffle; 2. Filter mechanism; 201. Filter cartridge; 2011. First filter hole; 202. Cover; 2021. Center plate; 2022. Second hexagonal hole; 203. Turning paddle; 2031. Center axis; 2 032, gear; 2033, paddle; 20331, second filter hole; 3, photo-oxidation catalytic 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; 4012, first bristle; 402, inner cleaning rod; 4021, second bristle; 403, connecting plate; 4031, screw hole; 5, driving mechanism; 501, driving motor; 502, connecting sleeve; 5021, first inner hexagonal hole; 503, driving shaft; 5031, hexagonal column; 5032, reciprocating screw rod; 504, synchronous wheel; 505, synchronous belt. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 14A printing waste gas purification device for printing production, comprising a purifier housing 1 and a filtering mechanism 2, a cleaning mechanism 4 and a photo-oxidation catalytic mechanism 3 are arranged on the outside of the filtering mechanism 2, and a driving mechanism 5 is arranged on the top of the purifier housing 1; The purifier housing 1 includes an air inlet cylinder 101 and an inspection cover 102, wherein the inspection cover 102 is fixedly mounted on the top of the air inlet cylinder 101, a maintenance ladder 103 is provided on the front end surface of the air inlet cylinder 101, an air inlet 1011 and an air outlet 1012 are provided on the left and right sides of the air inlet cylinder 101, and a slag discharge port 1013 is provided at the bottom of the air inlet cylinder 101; The filtering mechanism 2 comprises a filter cartridge 201 and a cover 202. The filter cartridge 201 is filled with activated carbon particles. The cover 202 is provided with a stirring paddle 203 for stirring the activated carbon particles. The filter cartridge 201 is installed in the purifier housing 1 and is rotatably 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 mounted on the cleaning mechanism 4 , and the lamp holder 302 is fixedly mounted on the driving shaft 503 of the driving mechanism 5 . The cleaning mechanism 4 includes an outer cleaning rod 401, an inner cleaning rod 402 and a connecting plate 403, and the cleaning mechanism 4 is installed on the outer side of the filter cartridge 201; The driving mechanism 5 includes a driving motor 501 , a connecting sleeve 502 and a driving shaft 503 . The driving motor 501 is fixedly mounted on the inspection cover 102 . The connecting sleeve 502 is fixedly mounted on the output shaft of the driving motor 501 . The driving shaft 503 is detachably mounted on the connecting sleeve 502 .

[0022] Furthermore, the filter cartridge 201 is a cylindrical hollow structure, a first filter hole 2011 is provided on the side of the filter cartridge 201, the front end face and the rear end face of the inner wall of the air inlet cylinder 101 are provided with guide columns 104 that fit with the filter cartridge 201, the tipping paddle 203 includes a central axis 2031 and blades 2033, the blades 2033 are two groups of centrally symmetrical arc-shaped metal plates, a second filter hole 20331 is provided on the blades 2033, the top of the central axis 2031 passes through the cover 202 and is rotatably connected thereto, and the tipping paddles 203 are installed on the cover 202 in an equidistant circular array.

[0023] The cylindrical filter cartridge 201 allows the exhaust gas to undergo four filtrations and two activated carbon purifications when passing through the filter cartridge 201. Compared with the traditional rectangular filter plate 106, the filtering and purification effects are better. The guide column 104 structures on the front and rear sides improve the fit between the filter cartridge 201 and the purifier housing 1 to avoid exhaust gas leakage. By arranging a number of rotatably connected turning paddles 203 structures in the filter cartridge 201, the activated carbon particles in the filter can be turned over easily to avoid premature adsorption and saturation of the activated carbon close to the filter screen, thereby making the activated carbon consumption more uniform.

[0024] Furthermore, the side end face of the guide column 104 is an arc-shaped structure, the filter cartridge 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 center plate 2021, the drive shaft 503 passes through the center plate 2021 for transmission, a gear 2032 is provided at the top of the center shaft 2031, a limit plate 105 is provided at the top of the guide column 104, and an arc-shaped rack 1051 meshing with the gear 2032 is provided on the side of the limit plate 105.

[0025] The filter cartridge 201 is driven to rotate by the driving shaft 503 so that all sides of the filter cartridge 201 can face the exhaust gas flow, thereby preventing the activated carbon particles in the filter cartridge 201 from always facing the airflow, causing local adsorption saturation of the activated carbon, and further improving the uniformity of activated carbon consumption. It also avoids premature local blockage of the filter cartridge 201 and increases the service life of the filter. When the filter cartridge 201 rotates, the gear 2032 cooperates with the arc rack 1051 to drive the turning paddle 203 to rotate.

[0026] Furthermore, an arc-shaped flange 1043 for supporting the filter cartridge 201 is disposed at the bottom of the guide column 104 , and rollers 1044 are evenly disposed on the upper end surface of the arc-shaped flange 1043 .

[0027] The roller 1044 reduces the friction between the filter cartridge 201 and the purifier housing 1, thereby making the filter cartridge 201 slide more smoothly. The arc-shaped flange 1043 positions and supports the filter cartridge 201, facilitating the installation and positioning of the drive shaft 503 and the filter cartridge 201, and reducing the load pressure of the drive shaft 503.

[0028] Furthermore, a guide groove 1041 is provided on the side of the guide column 104, and a guide slide bar 4011 slidably matched with the guide groove 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. The outer cleaning rod 401 is provided with a first bristle 4012 that fits with the outer end surface of the outer side of the filter cylinder 201, and the inner cleaning rod 402 is provided with a second bristle 4021 that fits with the inner end surface of the filter cylinder 201. The guide column 104 is located at the upper end of the slag discharge port 1013.

[0029] The sliding connection of the filter cartridge 201 facilitates the installation and replacement of the filter cartridge 201 and improves the convenience of the maintenance of the filter cartridge 201. When the filter cartridge 201 rotates, the first brush 4012 brushes the outer end surface of the filter cartridge 201, and the second brush 4021 brushes the inner end surface of the filter cartridge 201, thereby cleaning the filter cartridge 201 and sweeping the dust and particles attached to the surface of the filter cartridge 201 to the slag discharge port 1013, so that the filter cartridge 201 maintains a high air permeability.

[0030] Furthermore, a reciprocating screw rod 5032 is disposed at the bottom of the driving shaft 503 , and a screw hole 4031 cooperating with the reciprocating screw rod 5032 is disposed at the center of the connecting plate 403 .

[0031] The reciprocating screw 5032 is driven to rotate by the driving shaft 503, so that the reciprocating screw 5032 and the connecting plate 403 can slide back and forth up and down under the action of the 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 residue stuck in the filter cartridge 201.

[0032] Furthermore, the catalytic metal ring 301 is a hollow ring-shaped structure, the surface of the catalytic metal ring 301 is provided with honeycomb holes 3011 , dark grooves 3012 are provided between adjacent honeycomb holes 3011 , and the lamp holder 302 includes an ultraviolet lamp 3021 and a reflector 3022 .

[0033] The catalytic metal ring 301 is irradiated by the ultraviolet lamp 3021. The catalytic metal ring 301 is made of palladium. The palladium catalyzes the organic solvent to decompose it into carbon dioxide and water. The irradiation intensity is increased by the reflector 3022. The lamp holder 302 is driven to rotate by the driving shaft 503 to change the line light source into a surface light source. Since the catalytic metal ring 301 is fixedly mounted on the inner cleaning frame, when the inner cleaning frame shakes up and down, it can drive the catalytic metal ring 301 to shake up and down, so that the light can pass through the honeycomb hole 3011 and irradiate the inside of the catalytic metal ring 301. The dark groove 3012 structure increases the contact area between the catalyst metal ring and the air, thereby increasing the reaction rate. In the shaking process, the water generated in the reaction process can be shaken off, further improving the purification effect of the exhaust gas.

[0034] Furthermore, the drive motor 501 is fixedly mounted on the inspection cover 102, the number of the filter cartridge 201 and the drive shaft 503 is two, the two groups of the drive shafts 503 are transmitted through a synchronous belt 505 and a synchronous wheel 504, a connecting sleeve 502 is fixedly mounted on the output shaft of the drive motor 501, a hexagonal column 5031 is arranged on the top of the drive shaft 503, the lower end face of the connecting sleeve 502 is arranged on a first inner hexagonal hole 5021 that slides with the hexagonal column 5031, and a second inner hexagonal hole 2022 that slides with the hexagonal column 5031 is arranged at the center of the center plate 2021.

[0035] The driving motor 501 drives the driving shaft 503 to rotate through the connecting sleeve 502, and the driving shaft 503 drives the filter cartridge 201 to rotate through the hexagonal column 5031 and the second inner hexagonal hole 2022. The sliding connection between the connecting sleeve 502 and the hexagonal column 5031 structure facilitates the assembly and disassembly of the driving mechanism 5, thereby improving the convenience of equipment inspection and maintenance.

[0036] Furthermore, a positioning column 1052 is disposed on the lower end surface of the limiting plate 105 , a positioning hole 1042 slidably matched with the positioning column 1052 is disposed on the upper end surface of the guide column 104 , and a lifting ring 1021 is disposed on the upper end surface of the inspection cover 102 .

[0037] The limit plate 105 is installed on the upper end surface of the guide column 104 by slidingly fitting through the positioning column 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, thereby facilitating the extraction of the filter cartridge 201. A lifting ring 1021 is provided on the inspection cover 102 to facilitate lifting the inspection cover 102 together with the drive motor 501 for inspection.

[0038] Furthermore, a slag discharge pipe 107 is disposed at the lower end of the slag discharge port 1013 , a baffle 1071 rotatably connected via a hinge is disposed on the side of the slag discharge pipe 107 , and a filter plate 106 is disposed inside the air outlet 1012 .

[0039] The slag discharge pipe 107 is used to make the slag discharge port 1013 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. A filter plate 106 is set on the inner side of the air outlet 1012 to perform final interception and filtration to avoid a small gap between the filter cartridge 201 and the purifier housing 1, which may cause exhaust gas leakage.

[0040] When the device is in use, the filter cartridge 201 filled with activated carbon particles is inserted into the purifier housing 1, so that the bottom of the filter cartridge 201 fits with the arc-shaped flange 1043, ensuring that the filter cartridge 201 fits tightly with the guide column 104, and the drive shaft 503 can be accurately inserted into the second hexagonal hole 2022 of the center plate 2021 of the filter cartridge 201 cover 202 to achieve transmission connection. At the same time, the limit plate 105 is installed on the upper end surface of the guide column 104 through the positioning column 1052 and the positioning hole 1042, so that the gear 2032 is meshed with the arc-shaped rack 1051, and Close the inspection cover 102, align the motor connection sleeve 502 with the hexagonal column 5031, turn on the drive motor 501, and the output shaft of the drive motor 501 drives the drive shaft 503 to rotate through the connection sleeve 502. Since the two sets of drive shafts 503 are driven by the synchronous belt 505 and the synchronous wheel 504, the two filter cartridges 201 will start to rotate at the same time, so that each surface of the filter cartridge 201 can evenly contact the exhaust gas flow, ensuring the efficient use and uniform adsorption of the activated carbon. As the drive shaft 503 rotates, the reciprocating screw rod 5032 installed at the bottom thereof also rotates. The connecting plate 403 will rotate synchronously, and 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, and starts to perform preliminary cleaning on the filter cartridge 201, preparing for the entry of waste gas. The waste gas generated by the printing factory enters the interior of the device through the air inlet 1011 of the air inlet cylinder 101, and first passes through the rotating filter cartridge 201. When the waste gas passes through the first filter hole 2011 on the side of the filter cartridge 201, it will fully contact with the activated carbon particles filled in the cartridge, and the activated carbon absorbs organic pollutants and some dust particles in the waste gas. The waste gas after preliminary purification by the filter cartridge 201 continues to flow. At this time, the ultraviolet lamp 3021 continuously irradiates the catalytic metal ring 301. The palladium-made catalytic metal ring 301, under the excitation of ultraviolet light, catalytically oxidizes the organic components such as the organic solvent remaining in the waste gas, decomposing them into carbon dioxide and water, further deeply purifying the waste gas. During the waste gas treatment process, the filter cartridge 201 continuously rotates, and the turning paddle 203 continuously turns the activated carbon particles under the cooperation of the gear 2032 and the arc-shaped rack 1051, so as to avoid local adsorption saturation of the activated carbon.At the same time, the cleaning mechanism 4 is also working continuously. The bristles on the outer cleaning rod 401 and the inner cleaning rod 402 continuously brush the inner and outer end surfaces of the filter cartridge 201, sweeping the attached dust and particles to the slag discharge port 1013, maintaining 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, open the baffle 1071 on the side of the slag discharge pipe 107, and the waste residue will be discharged from the slag discharge port 1013 to 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 set inside the air outlet 1012. The filter plate 106 is also an activated carbon filter plate 106, which performs final interception and filtration to avoid a small gap between the filter cartridge 201 and the purifier housing 1, causing waste gas leakage. ;

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should 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: A cleaning mechanism (4) and a photo-oxidation catalytic mechanism (3) are arranged on the outside of the filtering mechanism (2), and a driving mechanism (5) is arranged on the top of the purifier housing (1); The purifier housing (1) comprises an air inlet cylinder (101) and an inspection cover (102), wherein the inspection cover (102) is fixedly mounted on the top of the air inlet cylinder (101), a front end surface of the air inlet cylinder (101) is provided with an inspection ladder (103), the left and right sides of the air inlet cylinder (101) are respectively provided with an air inlet (1011) and an air outlet (1012), and the bottom of the air inlet cylinder (101) is provided with a slag discharge port (1013); The filtering mechanism (2) comprises a filter cartridge (201) and a cover (202); the filter cartridge (201) is filled with activated carbon particles; the cover (202) is provided with a stirring paddle (203) for stirring the activated carbon particles; the filter cartridge (201) is installed in the purifier housing (1) and is rotatably connected thereto; The photo-oxidation catalytic mechanism (3) comprises a catalytic metal ring (301) and a lamp holder (302); the catalytic metal ring (301) is fixedly mounted on the cleaning mechanism (4); and the lamp holder (302) is fixedly mounted on the driving mechanism (5); The cleaning mechanism (4) comprises 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 cartridge (201); The driving mechanism (5) comprises a driving motor (501), a connecting shaft sleeve (502) and a driving shaft (503); the driving motor (501) is fixedly mounted on the inspection cover (102); the connecting shaft sleeve (502) is fixedly mounted on the output shaft of the driving motor (501); and the driving shaft (503) is detachably mounted on the connecting shaft sleeve (502).

2. A printing waste gas purification device for printing production as claimed in claim 1, characterized in that: The filter cartridge (201) is a cylindrical hollow structure; a first filter hole (2011) is arranged on the side of the filter cartridge (201); the front end face and the rear end face of the inner wall of the air inlet cylinder (101) are provided with guide columns (104) that fit the filter cartridge (201); the material turning paddle (203) comprises a central axis (2031) and a paddle (2033); the top of the central axis (2031) passes through the cover (202) and is rotatably connected thereto; and the material turning paddle (203) is installed on the cover (202) in an equidistant circular array.

3. A printing waste gas purification device for printing production as claimed in claim 2, characterized in that: The side end surface of the guide column (104) is an arc-shaped structure, the filter cartridge (201) is installed in the purifier housing (1) and is rotatably connected thereto, the upper end surface of the cover (202) is provided with a center plate (2021), the drive shaft (503) passes through the center plate (2021) to transmit power thereto, a gear (2032) is provided at the top of the center shaft (2031), a limit plate (105) is provided at the top of the guide column (104), and an arc-shaped rack (1051) meshing with the gear (2032) is provided on the side of the limit plate (105).

4. A printing waste gas purification device for printing production as claimed in claim 3, characterized in that: The bottom of the guide column (104) is provided with an arc-shaped flange (1043) for supporting the filter cartridge (201), and rollers (1044) are evenly arranged on the upper end surface of the arc-shaped flange (1043).

5. The printing waste gas purification device for printing production as claimed in claim 4, characterized in that: A guide groove (1041) is arranged on the side of the guide column (104), and a guide slide bar (4011) slidably matched with the guide groove (1041) is arranged on the outer cleaning rod (401). The outer cleaning rod (401) and the inner cleaning rod (402) are fixedly mounted on the upper end surface of the connecting plate (403). The outer cleaning rod (401) is provided with a first brush (4012) which is in contact with the outer end surface of the outer side of the filter cylinder (201), and the inner cleaning rod (402) is provided with a second brush (4021) which is in contact with the inner end surface of the filter cylinder (201). The guide column (104) is located at the upper end of the slag discharge port (1013).

6. A printing waste gas purification device for printing production as claimed in claim 5, characterized in that: A reciprocating screw rod (5032) is disposed at the bottom of the driving shaft (503), and a screw hole (4031) cooperating with the reciprocating screw rod (5032) is disposed at the center of the connecting plate (403).

7. The printing waste gas purification device for printing production as claimed in claim 1, characterized in that: The catalytic metal ring (301) is a hollow annular structure; the surface of the catalytic metal ring (301) is provided with honeycomb holes (3011); dark grooves (3012) are provided between adjacent honeycomb holes (3011); and the lamp holder (302) comprises an ultraviolet lamp (3021) and a reflector (3022).

8. The printing waste gas purification device for printing production as claimed in claim 3, characterized in that: The drive motor (501) is fixedly mounted on the inspection cover (102); a connecting sleeve (502) is fixedly mounted on the output shaft of the drive motor (501); a hexagonal column (5031) is arranged on the top of the drive shaft (503); a lower end surface of the connecting sleeve (502) is arranged in a first inner hexagonal hole (5021) that is slidably matched with the hexagonal column (5031); and a second inner hexagonal hole (2022) that is slidably matched with the hexagonal column (5031) is arranged at the center of the center plate (2021).

9. A printing waste gas purification device for printing production as claimed in claim 8, characterized in that: The lower end surface of the limiting plate (105) is provided with a positioning column (1052), the upper end surface of the guide column (104) is provided with a positioning hole (1042) that slidably cooperates with the positioning column (1052), and the upper end surface of the inspection cover (102) is provided with a lifting ring (1021).

10. The printing waste gas purification device for printing production as claimed in 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) rotatably connected via a hinge is provided on the side of the slag discharge pipe (107), and a filter plate (106) is provided inside the air outlet (1012).

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