Printing machine waste gas treatment device and treatment method

Abstract

The present invention relates to the field of waste gas treatment technology, and proposes a waste gas treatment device and treatment method for a printing press, wherein a waste gas treatment device for a printing press includes a waste gas treatment box, one side of the waste gas treatment box is connected to an exhaust gas inlet component, and also includes a sloped partition frame and a connecting pipe. The sloped partition frame is fixedly connected to the waste gas treatment box, and the sloped partition frame divides the interior of the waste gas treatment box into a drying and cooling chamber and a spray treatment chamber. An electrostatic dust removal device is provided between the drying and cooling chamber and the spray treatment chamber. An exhaust fan is provided on one side of the spray treatment chamber. The number of connecting pipes is set to multiple, and the connecting pipe is connected to multiple waste gas cooling mechanisms on the side close to the sloped partition frame. The waste gas cooling mechanisms are arranged throughout the sloped partition frame. Through the above technical solution, the problem that the waste gas treatment equipment in the prior art is difficult to cope with a variety of different waste gases is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device and method for a printing press. Background Art

[0002] Printing presses are machines used to print text and images in the existing technology. Modern printing presses are generally composed of mechanisms such as plate loading, inking, embossing and paper feeding to complete the printing operation on paper. During the operation of the printing press, because the ink, diluent and dampening oil in the printing press contain a lot of organic solvents, therefore, during the entire printing process of the printing press, during the inking, drying and cleaning processes of the printing press, due to the volatility of liquids such as ink, it is easy to produce some waste gas containing irritating substances, causing harm to the surrounding environment and workers.

[0003] During the use of large-scale printing presses in the existing technology, people usually equip special exhaust gas treatment devices to treat the exhaust gas during the use of the printing press. Common equipment for treating exhaust gas includes activated carbon adsorption method and spraying method, which have small limitations in use and low operating costs. However, in the process of treating exhaust gas, the components of exhaust gas generated by different processes of the printing press and the temperature of the exhaust gas itself are not the same. For example, the exhaust gas generated by the inking process will contain a large amount of dust and particulate matter, and the exhaust gas after the drying process has a certain temperature. Therefore, there are certain differences in the exhaust gas generated in different areas of the printing press. For exhaust gases with different temperatures and components, targeted exhaust gas treatment equipment is required, and commonly used exhaust gas treatment equipment is more difficult to cope with a variety of different exhaust gases. Summary of the Invention

[0004] The present invention provides a printing press waste gas treatment device and treatment method, which solves the problem that waste gas treatment equipment in the related art is difficult to deal with a variety of different waste gases.

[0005] The technical solution of the present invention is as follows: A printing press exhaust gas treatment device includes an exhaust gas treatment box, one side of the exhaust gas treatment box is connected to an exhaust gas inlet component, and further includes:

[0006] A sloped partition frame, the sloped partition frame is fixedly connected to the exhaust gas treatment box, the sloped partition frame divides the interior of the exhaust gas treatment box into a drying and cooling chamber and a spray treatment chamber, an electrostatic dust removal device is provided between the drying and cooling chamber and the spray treatment chamber, and an exhaust fan is provided on one side of the spray treatment chamber;

[0007] A communicating pipe, wherein the number of the communicating pipes is set to be multiple, and the communicating pipe is connected to multiple exhaust gas cooling mechanisms on one side close to the sloped partition frame. The exhaust gas cooling mechanisms are arranged through the sloped partition frame, and a movable drainage assembly is slidably arranged in each of the multiple communicating pipes, and a driving drainage assembly is provided between the exhaust gas treatment box and the multiple movable drainage assemblies;

[0008] A spray processing component is provided on the communicating pipe in an area within the spray processing chamber, and a plurality of the spray processing components are connected thereto.

[0009] In order to transport exhaust gas to the inside of the spray treatment chamber and the drying and cooling chamber, the exhaust gas inlet component further includes an exhaust gas channel and a transfer pipe. The exhaust gas channel is connected to the spray treatment chamber, and the transfer pipe is connected between the exhaust gas channel and the drying and cooling chamber. A valve is provided on the transfer pipe, and a negative pressure fan is provided on the top of the transfer pipe.

[0010] In order to carry out preliminary treatment of the exhaust gas entering the drying and cooling chamber and the spray treatment chamber, further, the exhaust gas cooling mechanism includes a water injection cylinder, a water injection pipe, heat dissipation fins and a water seepage cooling component. The water injection cylinder is fixedly connected to the sloped partition frame, and a plurality of water injection pipes are arranged inside the water injection cylinder. The water injection pipes are connected to the connecting pipe, and the bottom of the water injection pipe extends into the inner bottom of the water injection cylinder. The water injection cylinder is fixedly connected to a plurality of the heat dissipation fins in the area where the water injection cylinder is located in the drying and cooling chamber, and is connected to a plurality of the water seepage cooling components in the area where the water injection cylinder is located in the spray treatment chamber.

[0011] In order to discharge the water in the water injection cylinder, it further includes a drain valve, and the bottom of the water injection cylinder is connected to the drain valve. The inner bottom wall of the drying and cooling chamber is set to be sloped, and the inner bottom wall of the drying and cooling chamber is connected to a discharge trough.

[0012] In order to cool down the exhaust gas and reduce dust, based on the above scheme, the water seepage cooling component includes a water seepage pipe, and a plurality of the water seepage pipes are fixedly connected through the water injection cylinder. The water seepage pipe is provided with a plurality of installation ports, and a water supply filter element is provided in the installation port.

[0013] In order to add water to the corresponding area in the connecting pipe, on the basis of this solution, the mobile drainage assembly includes a sliding sleeve and a drainage cylinder. A sliding groove is provided on the inner wall of the connecting pipe. The sliding sleeve is slidably connected to the sliding groove. An elastic sealing sleeve is provided on the sliding sleeve. The side wall of the elastic sealing sleeve is fitted between the connecting pipe and the sliding groove. The drainage cylinder is fixedly connected in the sliding sleeve. The drainage cylinder is connected to a drainage outlet on the side close to the exhaust gas channel.

[0014] In order to adjust the position of the drainage cylinder, on the basis of this solution, the drainage driving assembly further includes a movable slide rail, an installation water tank, a water delivery pipe and a connecting rope. The two sides of the top of the exhaust gas treatment box are fixedly connected with the movable slide rails, and a mobile device is arranged between the two movable slide rails. The installation water tank is fixedly connected to the mobile device, and a water delivery pump is arranged in the installation water tank. A water supply cylinder is fixedly connected in the installation water tank, and the output end of the water delivery pump is connected to the water supply cylinder. The water delivery pipe is connected between the water supply cylinder and one side of the multiple drainage cylinders, and a connecting rope is fixedly connected between the mobile device and the other side of the multiple drainage cylinders.

[0015] In order to control the moving path of the water delivery pipe and the connecting rope, on the basis of the present solution, it further includes a guide cylinder and a bending delivery frame with a bending function, the installation water tank and the mobile device corresponding to the water delivery pipe and the connecting rope are fixedly connected with the guide cylinder, the water delivery pipe and the connecting rope are one-to-one corresponding to the guide cylinder, the water delivery pipe and the connecting rope are both located in the corresponding guide cylinder, the top two sides of the exhaust gas treatment box are fixedly connected with the bending delivery frame, the water delivery pipe or the connecting rope are slidably set in the corresponding bending delivery frame.

[0016] In order to treat the exhaust gas in the spray treatment chamber, based on the present solution, the spray treatment component further includes an installation water pipe, the installation water pipe is connected to the connecting pipe, and the bottom of the installation water pipe is connected to multiple spray heads.

[0017] A method for treating waste gas from a printing press, using the above-mentioned waste gas treatment device from a printing press, comprises the following steps:

[0018] The working principle and beneficial effects of the present invention are:

[0019] 1. In the present invention, when it is necessary to carry out targeted treatment of the exhaust gas generated by different process equipment in the printing press, the exhaust gas with high temperature and high dust is first transported to the drying and cooling chamber through the transfer pipe when passing through the exhaust channel. Water is added to the water injection cylinder so that the exhaust gas is cooled when passing between multiple water injection cylinders. Then, the exhaust gas enters the electrostatic dust removal equipment during the transportation process. After the dust in the exhaust gas is removed, the exhaust gas is transported to the spray treatment chamber for spray treatment. The exhaust gas with high temperature and low dust can be directly transported to the spray treatment chamber through the exhaust channel. The water seepage cooling component is used to treat the exhaust gas temperature and a large amount of dust, and then the spray treatment component is used to treat the exhaust gas.

[0020] 2. In the present invention, because the amount of waste gas generated by the printing press during different working periods is not consistent, when the amount of waste gas to be treated is small, the position of the drainage cylinder in the connecting pipe can be adjusted to adjust the flow direction of the spray agent in the connecting pipe, thereby avoiding the operation of all spray treatment components and effectively saving the use of spray agent;

[0021] Therefore, during actual use, the printing press waste gas treatment device can carry out targeted treatment according to the total amount and characteristics of the waste gas generated by different processes of the printing press, realize the most optimal treatment method for the waste gas, and save the use of spray agents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0024] Figure 2 It is a schematic structural diagram of a partial cross-section of the present invention;

[0025] Figure 3 It is a partial cross-sectional structural diagram of the exhaust gas inlet assembly, the exhaust gas cooling mechanism, the exhaust gas treatment box and the sloped partition frame in the present invention;

[0026] Figure 4 It is a partial cross-sectional structural diagram of the exhaust gas inlet assembly, exhaust gas cooling mechanism, drive drainage assembly and spray treatment assembly in the present invention;

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at A in the middle;

[0028] Figure 6 For the present invention Figure 4 Schematic diagram of the local enlarged structure at B in the middle;

[0029] Figure 7 It is a partial cross-sectional structural diagram of the exhaust gas cooling mechanism, the movable drainage assembly, the driven drainage assembly and the spray treatment assembly in the present invention;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at C in the middle;

[0031] Figure 9 It is a partial cross-sectional structural diagram of the exhaust fan, mounting bucket, insertion tank and activated carbon adsorption layer in the present invention.

[0032] In the figure: 100, exhaust gas inlet assembly; 200, exhaust gas cooling mechanism; 300, mobile drainage assembly; 400, drive drainage assembly; 500, spray treatment assembly;

[0033] 1. Exhaust gas treatment box; 2. Sloped partition frame; 3. Drying and cooling chamber; 4. Spray treatment chamber; 5. Electrostatic dust removal equipment; 6. Exhaust fan; 7. Connecting pipe; 8. Exhaust gas channel; 9. Transfer pipe; 10. Negative pressure fan; 11. Water injection cylinder; 12. Water injection pipe; 13. Heat dissipation fin; 14. Drain valve; 15. Seepage pipe; 16. Water supply filter element; 17. Sliding sleeve; 18. Sliding trough; 19 , elastic sealing sleeve; 20, drainage cylinder; 21, drainage outlet; 22, movable slide rail; 23, mobile equipment; 24, installation of water tank; 25, water delivery pump; 26, water supply cylinder; 27, water delivery pipe; 28, connecting rope; 29, guide cylinder; 30, bending delivery frame; 31, installation of water pipe; 32, sprinkler head; 33, installation of bucket body; 34, insertion of trough body; 35, activated carbon adsorption layer; 36, water receiving bucket. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0035] Example 1, as Figures 1 to 9As shown, this embodiment proposes a printing machine waste gas treatment device, including a waste gas treatment box 1, one side of the waste gas treatment box 1 is connected to the waste gas inlet component 100, the waste gas inlet component 100 includes a waste gas channel 8 and a transfer pipe 9, the waste gas channel 8 is connected to the spray treatment chamber 4, and the waste gas channel 8 is connected to the drying and cooling chamber 3 by a transfer pipe 9, a valve is provided on the transfer pipe 9, and a negative pressure fan 10 is provided on the top of the transfer pipe 9. After the waste gas with high dust enters the waste gas channel 8, the valve on the transfer pipe 9 is opened to allow the waste gas to pass through the waste gas channel 8 into the drying and cooling chamber 3, and then perform special cooling and dust removal operations. For high-temperature and low-dust waste gas, the waste gas can be directly transported to the spray treatment chamber 4 to spray the pollutants in the waste gas.

[0036] It also includes a sloped partition frame 2, which is fixedly connected to the exhaust gas treatment box 1. The sloped partition frame 2 divides the interior of the exhaust gas treatment box 1 into a drying and cooling chamber 3 and a spray treatment chamber 4. An electrostatic dust removal device 5 is provided between the drying and cooling chamber 3 and the spray treatment chamber 4. The electrostatic dust removal device 5 is an existing technology device used in the prior art to treat dust in the gas, and is an existing technology device well known to those skilled in the art.

[0037] An exhaust fan 6 is provided on one side of the spray treatment chamber 4. The side of the spray treatment chamber 4 away from the sloped partition frame 2 is connected to the installation bucket 33. The exhaust fan 6 is arranged in the installation bucket 33. The installation bucket 33 is fixedly connected with an insertion groove 34. The insertion groove 34 is located between the spray treatment chamber 4 and the exhaust fan 6. An activated carbon adsorption layer 35 is provided in the insertion groove 34. After the exhaust gas is processed from the spray treatment chamber 4, the exhaust fan 6 is started to attract the exhaust gas in the spray treatment chamber 4 toward the installation bucket 33, and finally the processed exhaust gas is discharged through the installation bucket 33. In order to further process the exhaust gas, in the process of the exhaust gas being discharged through the installation bucket 33, the exhaust gas is made to enter the installation bucket 33 at a uniform speed, and fully contact with the activated carbon adsorption layer 35, so that the harmful substances in the exhaust gas are further removed.

[0038] The number of the communicating pipes 7 is set to be multiple, and the communicating pipes 7 are inclined in the direction of the sloped partition frame 2. The communicating pipes 7 are connected to a plurality of exhaust gas cooling mechanisms 200 on one side close to the sloped partition frame 2. The exhaust gas cooling mechanism 200 is arranged on the sloped partition frame 2. The exhaust gas cooling mechanism 200 includes a water injection cylinder 11, a water injection pipe 12, a heat dissipation fin 13 and a water seepage cooling component. The water injection cylinder 11 is fixedly connected to the sloped partition frame 2. A plurality of water injection pipes 12 are arranged inside the water injection cylinder 11. The water injection pipes 12 are connected to the communicating pipes 7, and the bottom of the water injection pipe 12 extends into the inner bottom of the water injection cylinder 11. A plurality of heat dissipation fins 13 are fixedly connected to the area of ​​the water injection cylinder 11 located in the drying and cooling chamber 3. A plurality of water seepage cooling components are connected to the area of ​​the water injection cylinder 11 located in the spray treatment chamber 4. After the high-dust exhaust gas is injected into the drying and cooling chamber 3, the spray agent is introduced into the water injection cylinder 11 through the connecting pipe 7 and the water injection pipe 12. After the exhaust gas enters the drying and cooling chamber 3, it contacts the plurality of heat dissipation fins 13 on the water injection pipe 12. Due to the low temperature of the spray agent itself, the exhaust gas is effectively cooled, so that the exhaust gas meets the requirements for entering the electrostatic dust removal equipment 5.

[0039] The drying and cooling chamber 3 further includes a drain valve 14. The bottom of the water injection cylinder 11 is connected to the drain valve 14. The inner bottom wall of the drying and cooling chamber 3 is configured as a slope. The inner bottom wall of the drying and cooling chamber 3 is connected to a discharge trough. After the temperature of the spray agent in the water injection cylinder 11 rises, the drain valve 14 is opened to discharge the spray agent through the water injection cylinder 11 into the drying and cooling chamber 3. The spray agent continues to be discharged through the discharge trough for recycling. Because the inner bottom wall of the drying and cooling chamber 3 is configured as a slope, the discharged spray agent can more conveniently enter the discharge trough.

[0040] The water seepage cooling component includes a water seepage pipe 15, and a plurality of water seepage pipes 15 are fixedly connected to the water injection cylinder 11. The water seepage pipe 15 is provided with a plurality of mounting ports, and a water supply filter element 16 is provided in the mounting port. The exhaust gas with low dust content can directly enter the spray treatment chamber 4 through the exhaust gas channel 8. As the water injection pipe 12 gradually injects the spray agent into the water injection cylinder 11, the water level of the spray agent in the water injection cylinder 11 rises, and then the spray agent gradually enters the water seepage pipe 15 and passes through the water supply filter element 16 from the seepage treatment chamber 4. After being discharged from the water pipe 15, it starts to drip, and then the waste gas contacts the spray agent dripping from the seepage pipe 15. On the one hand, the temperature of the waste gas can be reduced to avoid the temperature of the waste gas being close to the temperature of the spray agent when the waste gas is subsequently sprayed. On the other hand, the large particles of dust in the waste gas can also be processed, so that the dust in the waste gas directly falls onto the surface of the sloped partition frame 2 after contacting the spray agent discharged from the seepage pipe 15, and then the spray agent and dust are mixed and enter the water receiving bucket 36.

[0041] A movable drainage assembly 300 is slidably provided in each of the multiple communicating pipes 7. The movable drainage assembly 300 includes a sliding sleeve 17 and a drainage cylinder 20. A sliding groove 18 is provided on the inner wall of the communicating pipe 7. The sliding sleeve 17 is slidably connected to the sliding groove 18. An elastic sealing sleeve 19 is provided on the sliding sleeve 17. The side wall of the elastic sealing sleeve 19 fits between the communicating pipe 7 and the sliding groove 18. The drainage cylinder 20 is fixedly connected to the sliding sleeve 17. The side of the drainage cylinder 20 close to the exhaust gas channel 8 is connected to a drain port 21. In order to adjust the discharge position of the spray agent in the communicating pipe 7, the position of the drainage cylinder 20 in the communicating pipe 7 is adjusted. The sliding relationship between the sliding sleeve 17 and the sliding groove 18 makes the drainage cylinder 20 move to the corresponding position in the communicating pipe 7. After the spray agent enters the drainage cylinder 20, the spray agent is discharged into the communicating pipe 7 through the drain port 21. The elastic sealing sleeve 19 is provided to prevent the spray agent from flowing back.

[0042] A driving drainage component 400 is provided between the exhaust gas treatment box 1 and the plurality of mobile drainage components 300. The driving drainage component 400 includes a mobile slide 22, an installation water tank 24, a water delivery pipe 27 and a connecting rope 28. The top two sides of the exhaust gas treatment box 1 are fixedly connected with a mobile slide 22. A mobile device 23 is provided between the two mobile slides 22. The mobile device 23 is a mobile device 23 well known to those skilled in the art. A driving wheel is provided on the mobile device 23. By driving the driving wheel to rotate, the mobile device 23 drives the installation water tank 24 and other components to move horizontally between the two mobile slides 22. The mobile device 23 is fixedly connected with an installation water tank 24. A water tank 24 is provided with a water delivery pump 25 in the installation water tank 24, a water supply cylinder 26 is fixedly connected to the installation water tank 24, the output end of the water delivery pump 25 is connected to the water supply cylinder 26, a water delivery pipe 27 is connected between the water supply cylinder 26 and one side of the multiple drainage cylinders 20, and a connecting rope 28 is fixedly connected between the mobile device 23 and the other side of the multiple drainage cylinders 20. When the position of the drainage cylinder 20 needs to be adjusted, the water delivery pipe 27 or the connecting rope 28 is pulled during the movement of the mobile device 23, and then the position of the drainage cylinder 20 is adjusted. The lengths of the water delivery pipe 27 and the connecting rope 28 are similar;

[0043] Then, the pipeline for conveying the spraying agent is connected to the input end of the delivery water pump 25 , and the delivery water pump 25 is started to extract and convey the spraying agent into the water supply cylinder 26 , so that the spraying agent finally enters the delivery water pipe 27 and the drainage cylinder 20 .

[0044] The guide cylinder 29 and the connecting rope 28 are fixedly connected to the corresponding water delivery pipes 27 and the connecting rope 28 on the water tank 24 and the mobile device 23. The water delivery pipes 27 and the connecting rope 28 correspond to the guide cylinder 29 one by one. The water delivery pipes 27 and the connecting rope 28 are both located in the corresponding guide cylinder 29. The top two sides of the exhaust gas treatment box 1 are fixedly connected with the bending conveying frame 30. The water delivery pipes 27 or the connecting rope 28 are slidably arranged in the corresponding bending conveying frame 30. In order to ensure that the movement of the connecting rope 28 and the water delivery pipe 27 remains vertical and longitudinally corresponding to each other, the guide cylinder 29 is used to ensure that the connecting rope 28 and the water delivery pipe 27 are transported in a straight line, and the bending conveying frame 30 is set to adjust the conveying height of the connecting rope 28 and the water delivery pipe 27 so that the connecting rope 28 and the water delivery pipe 27 correspond to the connection position height of the mobile device 23 and the water tank 24.

[0045] A plurality of spray treatment components 500 are connected and arranged on the area of ​​the connecting pipe 7 located in the spray treatment chamber 4. The spray treatment component 500 includes an installed water pipe 31, which is connected to the connecting pipe 7. The bottom of the installed water pipe 31 is connected to a plurality of spray heads 32. The bottom of the spray treatment chamber 4 is connected to a water receiving bucket 36. Because there is still some recoverable organic solvent in the waste liquid after spray treatment, after the spray agent contacts the waste gas to form waste liquid, the waste liquid is collected by the water receiving bucket 36, and the water receiving bucket 36 is connected to a discharge pipe with a valve installed, which is used to discharge the waste liquid. When it is necessary to treat the waste gas entering the spray treatment chamber 4, the position of the drainage cylinder 20 in the connecting pipe 7 is adjusted so that the spray agent discharged from the drainage cylinder 20 can enter the plurality of installed water pipes 31, and then be discharged through the spray head 32 to spray the waste gas.

[0046] The working principle of the printing press exhaust gas treatment device:

[0047] First, according to the needs, the type of waste gas to be processed is selected, the exhaust gas discharge area is selected, and the negative pressure fan 10 is started. The waste gas with high dust content can be transported to the drying and cooling chamber 3 through the transfer pipe 9. At this time, the position of the drainage cylinder 20 in the connecting pipe 7 is adjusted so that when the spray agent is discharged from the drainage cylinder 20, it will only enter the multiple water injection pipes 12. The water injection pipes 12 transport the spray agent to the water injection cylinder 11. After the waste gas enters the drying and cooling chamber 3, the waste gas contacts the multiple heat dissipation fins 13 on the water injection pipes 12. The waste gas is effectively cooled by the low temperature of the spray agent itself. The waste gas will subsequently enter the electrostatic dust removal equipment 5, and after the dust removal operation of the electrostatic dust removal equipment 5, it will enter the spray treatment chamber 4 for treatment;

[0048] The exhaust gas with low dust content directly enters the spray treatment chamber 4. As the water injection pipe 12 gradually adds spray agent into the water injection cylinder 11, the water level of the spray agent in the water injection cylinder 11 rises, and then the spray agent gradually enters the seepage pipe 15, and is discharged from the seepage pipe 15 through the water supply filter 16 and begins to drip. Then, after the exhaust gas contacts the spray agent dripping from the seepage pipe 15, on the one hand, the temperature of the exhaust gas can be reduced to avoid the temperature of the exhaust gas being close to the temperature of the spray agent when the exhaust gas is sprayed subsequently. On the other hand, the large particles of dust in the exhaust gas can also be processed so that the dust in the exhaust gas can pass through the After the spray agent discharged from the seepage pipe 15 comes into contact, it falls directly onto the surface of the sloped partition frame 2, and then the spray agent mixes with the dust and enters the water receiving bucket 36. Then, the mobile device 23 is started to adjust the position of the drainage cylinder 20 so that the spray agent discharged from the drainage cylinder 20 can enter the installation water pipe 31. The position of the drainage cylinder 20 is determined according to the amount of waste gas to be treated, so that the spray agent can enter the corresponding number of installation water pipes 31. Then, after being discharged through multiple spray heads 32, the waste gas is sprayed for treatment. After the waste gas is treated, the exhaust fan 6 is started to move the treated waste gas out of the spray treatment chamber 4.

[0049] Embodiment 2: Based on a printing press exhaust gas treatment device, this embodiment 2 also proposes a printing press exhaust gas treatment method, including the following steps:

[0050] Step 1: Transporting waste gas: When transporting waste gas with high dust content, start the negative pressure fan 10 to pump the waste gas in the waste gas channel 8 into the transfer pipe 9, and then let the waste gas directly enter the drying and cooling chamber 3;

[0051] Step 2: Adjust the position of the drainage cylinder 20: Start the moving device 23 to move between the two moving slide rails 22. During the movement, the moving device 23 will drive the water delivery pipe 27 and the connecting rope 28 to move, and then adjust the position of the drainage cylinder 20 and the sliding cylinder in the connecting pipe 7;

[0052] Step 3: Water injection: Start the water delivery pump 25 to deliver the spray agent to the water supply cylinder 26, so that the spray agent enters the multiple water delivery pipes 27 through the water supply cylinder 26, and finally delivers the spray agent to the drainage cylinder 20 through the water delivery pipes 27. The spray agent is discharged through the discharge port of the drainage cylinder 20, so that the spray agent only enters the multiple water injection pipes 12 after being discharged from the drainage cylinder 20;

[0053] Step 4: Cooling and dust removal: The water injection pipe 12 transports the spray agent into the water injection cylinder 11, causing the exhaust gas to enter the drying and cooling chamber 3. The exhaust gas then contacts the multiple heat dissipation fins 13 on the water injection pipe 12 to cool the exhaust gas. The exhaust gas then enters the electrostatic dust removal device 5, and after the dust removal operation of the electrostatic dust removal device 5, it enters the spray treatment chamber 4 for treatment;

[0054] Step 5, exhaust gas pretreatment: The exhaust gas with low dust content directly enters the spray treatment chamber 4. As the water injection pipe 12 gradually adds the spray agent into the water injection cylinder 11, the water level of the spray agent in the water injection cylinder 11 rises, and then the spray agent gradually enters the seepage pipe 15, and is discharged from the seepage pipe 15 through the water supply filter 16 and begins to drip. Then, after the exhaust gas contacts the spray agent dripping from the seepage pipe 15, on the one hand, the temperature of the exhaust gas can be reduced to avoid the temperature of the exhaust gas being close to the temperature of the spray agent when the exhaust gas is subsequently sprayed. On the other hand, the large particles of dust in the exhaust gas can also be treated;

[0055] Step 6, waste gas treatment: Start the mobile device 23 to adjust the position of the drainage cylinder 20 so that the spray agent discharged from the drainage cylinder 20 can enter the installation water pipe 31, and judge the position of the drainage cylinder 20 according to the amount of waste gas to be treated, so that the spray agent can enter the corresponding number of installation water pipes 31, and then be discharged through multiple spray heads 32, and the waste gas is sprayed for treatment. After the waste gas is treated, start the exhaust fan 6 to move the treated waste gas out of the spray treatment chamber 4.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A printing press waste gas treatment device, comprising a waste gas treatment box (1), one side of the waste gas treatment box (1) is connected to a waste gas inlet assembly (100), characterized in that: Also includes: A sloped partition frame (2), the sloped partition frame (2) being fixedly connected to the exhaust gas treatment box (1), the sloped partition frame (2) dividing the interior of the exhaust gas treatment box (1) into a drying and cooling chamber (3) and a spray treatment chamber (4), an electrostatic dust removal device (5) being provided between the drying and cooling chamber (3) and the spray treatment chamber (4), and an exhaust fan (6) being provided on one side of the spray treatment chamber (4); A communicating pipe (7), wherein the number of the communicating pipes (7) is set to be multiple, and the communicating pipe (7) is connected to a plurality of exhaust gas cooling mechanisms (200) on a side close to the sloped partition frame (2), and the exhaust gas cooling mechanisms (200) are arranged through the sloped partition frame (2), and a movable drainage assembly (300) is slidably arranged in each of the plurality of communicating pipes (7), and a driving drainage assembly (400) is arranged between the exhaust gas treatment box (1) and the plurality of movable drainage assemblies (300); A spray processing assembly (500), wherein a plurality of the spray processing assemblies (500) are connected and arranged on the area of ​​the communication pipe (7) located within the spray processing chamber (4); The exhaust gas inlet assembly (100) comprises: an exhaust gas channel (8), the exhaust gas channel (8) being in communication with the spray treatment chamber (4); A transfer pipe (9), wherein the exhaust gas channel (8) and the drying and cooling chamber (3) are connected to each other via the transfer pipe (9), a valve is provided on the transfer pipe (9), and a negative pressure fan (10) is provided at the top of the transfer pipe (9); The exhaust gas cooling mechanism (200) comprises: A water injection cylinder (11), the water injection cylinder (11) passing through and fixedly connected to the sloped partition frame (2); Water injection pipes (12), a plurality of water injection pipes (12) are provided inside the water injection cylinder (11), the water injection pipes (12) are connected to the communication pipe (7), and the bottoms of the water injection pipes (12) extend into the inner bottom of the water injection cylinder (11); Heat dissipation fins (13), a plurality of heat dissipation fins (13) are fixedly connected to the area of ​​the water injection cylinder (11) located within the drying and cooling chamber (3); A water seepage cooling component, wherein the water injection cylinder (11) is located in an area within the spray treatment chamber (4) and is connected to a plurality of the water seepage cooling components.

2. A printing press exhaust gas treatment device according to claim 1, characterized in that: Also includes: A drain valve (14), the bottom of the water injection cylinder (11) is connected to the drain valve (14); The inner bottom wall of the drying and cooling chamber (3) is configured to be sloped, and a discharge trough is connected to the inner bottom wall of the drying and cooling chamber (3).

3. A printing press exhaust gas treatment device according to claim 2, characterized in that: The water seepage cooling component comprises: Seepage pipes (15), a plurality of the seepage pipes (15) are fixedly connected to the water injection cylinder (11), a plurality of installation openings are provided on the seepage pipes (15), and a water supply filter element (16) is provided in the installation openings.

4. A printing press exhaust gas treatment device according to claim 3, characterized in that: The mobile drainage assembly (300) comprises: A sliding sleeve (17), a sliding groove (18) is provided on the inner wall of the communicating pipe (7), the sliding sleeve (17) is slidably connected to the sliding groove (18), an elastic sealing sleeve (19) is provided on the sliding sleeve (17), and a side wall of the elastic sealing sleeve (19) is fitted between the communicating pipe (7) and the sliding groove (18); A drainage cylinder (20) (20) is fixedly connected to the sliding sleeve (17), and a drainage outlet (21) is connected to the side of the drainage cylinder (20) close to the exhaust gas channel (8).

5. The printing press exhaust gas treatment device according to claim 4, characterized in that: The driving drainage assembly (400) comprises: Movable slide rails (22), both sides of the top of the exhaust gas treatment box (1) are fixedly connected to the movable slide rails (22), and a moving device (23) is provided between the two movable slide rails (22); A water tank (24) is installed, the mobile device (23) is fixedly connected to the water tank (24), a water delivery pump (25) is provided in the water tank (24), a water supply cylinder (26) is fixedly connected in the water tank (24), and an output end of the water delivery pump (25) is in communication with the water supply cylinder (26); A water delivery pipe (27), wherein the water supply cylinder (26) and one side of the plurality of drainage cylinders (20) are all connected by the water delivery pipe (27); A connecting rope (28) is fixedly connected between the mobile device (23) and the other side of the plurality of drainage cylinders (20).

6. The printing press exhaust gas treatment device according to claim 5, characterized in that: Also includes: A guide cylinder (29) having a bending function, wherein the water delivery pipe (27) and the connecting rope (28) corresponding to the installation water tank (24) and the mobile device (23) are fixedly connected to the guide cylinder (29), the water delivery pipe (27) and the connecting rope (28) are in one-to-one correspondence with the guide cylinder (29), and the water delivery pipe (27) and the connecting rope (28) are both located in the corresponding guide cylinder (29); A bending conveying frame (30) is fixedly connected to both sides of the top of the exhaust gas treatment box (1), and the conveying water pipe (27) or the connecting rope (28) is slidably arranged in the corresponding bending conveying frame (30).

7. The printing press exhaust gas treatment device according to claim 6, characterized in that: The spray treatment assembly (500) comprises: A water pipe (31) is installed, the water pipe (31) is connected to the connecting pipe (7), and the bottom of the water pipe (31) is connected to a plurality of sprinkler heads (32).

8. A method for treating waste gas from a printing press, using the waste gas treatment device of claim 7, characterized in that: The following steps are involved: Step 1: Transporting waste gas: When transporting waste gas with a high dust content, start the negative pressure fan (10) to pump the waste gas in the waste gas channel (8) into the transfer pipe (9), and then allow the waste gas to directly enter the drying and cooling chamber (3); Step 2: Adjust the position of the drainage cylinder (20): Start the mobile device (23) and move it between the two movable slide rails (22). During the movement of the mobile device (23), the water delivery pipe (27) and the connecting rope (28) are driven to move, and then the positions of the drainage cylinder (20) and the sliding cylinder in the connecting pipe (7) are adjusted; Step 3: Water injection: Start the water delivery pump (25) to deliver the spray agent into the water supply cylinder (26), so that the spray agent enters the multiple water delivery pipes (27) through the water supply cylinder (26), and finally delivers the spray agent into the drainage cylinder (20) through the water delivery pipes (27). The spray agent is discharged through the discharge port of the drainage cylinder (20), so that the spray agent only enters the multiple water injection pipes (12) after being discharged from the drainage cylinder (20); Step 4: Cooling and dust removal: The water injection pipe (12) transports the spray agent into the water injection cylinder (11), so that the exhaust gas enters the drying and cooling chamber (3). The exhaust gas contacts the multiple heat dissipation fins (13) on the water injection pipe (12) to cool the exhaust gas. The exhaust gas then enters the electrostatic dust removal device (5), and after the dust removal operation of the electrostatic dust removal device (5), enters the spray treatment chamber (4) for treatment. Step 5, waste gas pretreatment: The waste gas with low dust content directly enters the spray treatment chamber (4), and as the water injection pipe (12) gradually injects the spray agent into the water injection cylinder (11), the water level of the spray agent in the water injection cylinder (11) rises, and then the spray agent gradually enters the seepage pipe (15), and is discharged from the seepage pipe (15) through the water supply filter (16) and begins to drip. Then, after the waste gas contacts the spray agent dripping from the seepage pipe (15), the temperature of the waste gas can be reduced, and the large particles of dust in the waste gas can also be treated; Step 6, waste gas treatment: Start the mobile device (23) to adjust the position of the drainage cylinder (20) so that the spray agent discharged from the drainage cylinder (20) enters the installation water pipe (31), and the position of the drainage cylinder (20) is determined according to the amount of waste gas to be treated, so that the spray agent enters a corresponding number of installation water pipes (31), and then is discharged through multiple spray heads (32) to spray the waste gas. After the waste gas is treated, start the exhaust fan (6) to move the treated waste gas out of the spray treatment chamber (4).

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