An exhaust gas treatment device for packaging bag production

Abstract

This invention relates to the field of waste gas treatment technology, and provides a device for treating exhaust gas from packaging bag production. The device includes a tank, a filter structure on one side of the tank, a cooling structure on the side of the filter structure away from the tank, an online conductivity meter fixed on the side of the tank away from the filter structure, and a purification structure inside the tank. Through the purification structure, the filtered exhaust gas enters the interior of a ring pipe through a connecting pipe, and then is discharged into the reaction liquid inside the tank through an exhaust port. Under the action of the exhaust port, the exhaust gas is dispersed in the reaction liquid as bubbles, increasing the contact area between the exhaust gas and the reaction liquid. During rotation, the worm gear agitator drives the reaction liquid radially, breaking the bubbles into smaller bubbles. During rotation, the paddles drive the reaction liquid axially, ensuring thorough mixing between the reaction liquid and the small bubbles, thus allowing the exhaust gas to fully react with the reaction liquid and preventing the residue of harmful substances in the exhaust gas.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a device for treating exhaust gas from packaging bag production. Background Technology

[0002] The production of packaging bags generates a large amount of harmful gases, and direct emission of these gases will pollute the environment, which is contrary to the core goal of "green compliance and pollution reduction" pursued by current environmental protection engineering construction. Therefore, a tail gas treatment device for packaging bag production is needed. To this end, patent CN208599460U discloses a waste gas treatment device in packaging bag production. The device comprises an air inlet, heating component A, heating component B, activated carbon adsorption layer, baffles, atomizing nozzles, a reaction tank, an exhaust port, and a drain port. Heating component A is located on the outer wall of the air inlet. A reaction tank is located below the air inlet. Heating components B are located at both ends of the side wall of the reaction tank. A horizontal baffle is located inside the reaction tank, and an atomizing nozzle is located on the horizontal baffle. An activated carbon adsorption layer is located above the reaction tank, and an exhaust port and a drain port are located at the lower end of the reaction tank. This invention heats the waste gas at different locations along the waste gas flow path. Because several baffles are arranged crosswise within the reaction tank, a "Z"-shaped waste gas passage is formed within the reaction tank. Therefore, the waste gas will travel in a "Z"-shaped direction within the reaction tank, increasing the residence time of the waste gas in the reaction tank and resulting in better absorption and purification effects. The waste gas treatment device in the packaging bag production mentioned above increases the residence time of waste gas in the reaction tank, so that the waste gas is purified by water bath treatment. During use, oil and waste residue in the waste gas are easy to adhere to the inner wall, forming sludge blockage, which leads to poor airflow. In addition, the reaction liquid and waste gas are in uneven contact, which can easily lead to the residue of harmful substances in the tail gas. Summary of the Invention

[0003] The purpose of this invention is to provide an exhaust gas treatment device for packaging bag production, which solves the defects of existing exhaust gas treatment devices for packaging bag production, which result in insufficient reaction and the residue of harmful substances in the exhaust gas.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an exhaust gas treatment device for packaging bag production, comprising a tank; A filter structure is provided on one side of the tank, a cooling structure is provided on the side of the filter structure away from the tank, an online conductivity meter is fixed on the side of the tank away from the filter structure, and a purification structure is provided inside the tank. A liquid level observation tube is fixed on the outer wall of one side of the tank. A lower sealing seat is fixedly installed at the bottom of the tank. An upper sealing seat is fixedly installed at the top of the tank. A gearbox is fixedly installed at the top of the upper sealing seat. The purification structure includes a rotating shaft located in the middle of the tank. Paddles are uniformly fixed on the outer wall of the rotating shaft. Fixed rods are uniformly fixed on the outer wall of the bottom of the rotating shaft via bearings. A worm gear agitator is fixed at the bottom of the rotating shaft. A reflux plate is fixed on the inner wall of the tank above the paddles. A ring pipe is provided below the worm gear agitator.

[0005] Preferably, a waste discharge pipe is fixed at the middle position of the bottom end of the lower seal, and supports are evenly fixed on the outer side of the waste discharge pipe at the bottom end of the lower seal. Both ends of the liquid level observation pipe are connected to the interior of the tank.

[0006] Preferably, an exhaust pipe is fixed to one side of the top of the upper sealing seat, and a drive motor is fixedly installed on the top of the gearbox, with the output end of the drive motor fixedly connected to the input end of the gearbox.

[0007] Preferably, the filtration structure includes a filter box disposed on one side of the tank, a door panel movably installed on one side of the bottom of the filter box, a cover plate fixedly installed on the top of the filter box, a filter element disposed in the middle position inside the filter box, limit plates fixed on the inner walls of the filter box on both sides of the filter element, and baffles fixed at the bottom ends of the cover plates on both sides of the filter element.

[0008] Preferably, the cooling structure includes a cooling pipe disposed on the side of the filter box away from the tank body, an air supply pipe passing through the inside of the cooling pipe, a drain pipe fixed on the outer wall of the top of the cooling pipe, a water inlet pipe fixed on the outer wall of the bottom of the cooling pipe, and supports evenly fixed at the bottom end of the cooling pipe.

[0009] Preferably, the cooling pipe is inclined, one end of the air supply pipe is connected to one side of the filter box, the water inlet pipe is connected to a water supply pipe, and the water outlet pipe is connected to a water outlet pipe.

[0010] Preferably, a drain pipe is fixed on the outer wall of the tank below the online conductivity meter, and an inlet pipe is fixed on the outer wall of the tank above the online conductivity meter. The input end of the online conductivity meter extends into the interior of the tank.

[0011] Preferably, the reflux plate is conical, the top end of the rotating shaft extends to the outside of the upper seal and is fixedly connected to the output end of the gearbox, the paddle is inclined, and the end of the fixing rod away from the rotating shaft is fixedly connected to the inner wall of the tank.

[0012] Preferably, a connecting pipe is fixedly installed on one side of the top end of the ring pipe, exhaust holes are evenly opened at the top end of the ring pipe, a connecting seat is fixed at the bottom end of the ring pipe, and a fixing seat is fixedly installed at the top end of the connecting seat on the outer side of the ring pipe.

[0013] Preferably, one end of the connecting pipe extends to the outside of the tank and is connected to one side of the filter box, and the outer wall of the fixing seat is fixedly connected to the inner wall of the tank.

[0014] The present invention provides an exhaust gas treatment device for packaging bag production, the advantages of which are: With a purification structure, the filtered exhaust gas enters the interior of the ring pipe through the connecting pipe, and then is discharged into the reaction liquid inside the tank through the exhaust port. Under the action of the exhaust port, the exhaust gas is dispersed in the reaction liquid in the form of bubbles, which increases the contact area between the exhaust gas and the reaction liquid, allowing the exhaust gas and the reaction liquid to react fully and reducing the residue of harmful substances in the exhaust gas. Furthermore, the drive motor is started, and the drive motor drives the rotating shaft to rotate through the reduction gearbox. The rotating shaft drives the worm gear agitator to rotate, and the worm gear agitator drives the reaction liquid to move radially and breaks the bubbles into smaller bubbles, further increasing the contact area between the exhaust gas and the reaction liquid, making the reaction between the exhaust gas and the reaction liquid more complete, and further reducing the residue of harmful substances in the exhaust gas. Furthermore, the rotating shaft simultaneously drives the paddle to rotate, which in turn drives the reaction liquid to move axially, allowing the reaction liquid to mix thoroughly with the small bubbles, resulting in a more complete reaction. During the stirring process, the reaction liquid is subjected to centrifugal force, causing it to surge up along the inner wall of the tank. Under the action of the reflux plate, the reaction liquid surging up from the inner wall of the tank covers the top of the reaction liquid on the outer wall of the rotating shaft. The collision of the liquid surfaces causes the bubbles moving towards the surface of the reaction liquid to break and then come into contact with the reaction liquid again, making the reaction between the exhaust gas and the reaction liquid more complete and further reducing the residue of harmful substances in the exhaust gas. The purified exhaust gas is discharged through the exhaust pipe. With a cooling structure, when the exhaust gas enters the filter box through the gas supply pipe, cold water enters the cooling pipe through the water inlet pipe and then exits through the drain pipe. The cold water inside the cooling pipe cools the exhaust gas inside the gas supply pipe. The cooling pipe is inclined so that the water temperature inside the cooling pipe decreases from top to bottom, improving the cooling effect. At the same time, it prevents the waste residue in the exhaust gas from accumulating inside the gas supply pipe and causing blockage. With a filtration structure, the cooled exhaust gas is discharged into the filter box through a gas supply pipe and then discharged through a connecting pipe. The filter element, which is fixed inside the filter box by a limiting plate, filters the exhaust gas, preventing waste residue from entering the reaction liquid. At the same time, the baffle plate ensures that the gas passes evenly through the filter element, preventing the exhaust gas in the gas supply pipe from impacting the same position of the filter element and causing local blockage, thus extending the service life of the filter element. The accumulated waste residue inside the filter box can be cleaned periodically by opening the door panel. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a rear view diagram of the present invention; Figure 3 This is a schematic front cross-sectional view of the present invention; Figure 4 This is a first-view schematic diagram of the main cross-section of the filter structure of the present invention; Figure 5 This is a schematic diagram of the second perspective of the main cross-section of the filter structure of the present invention; Figure 6 This is an exploded view of the filter structure of the present invention; Figure 7 This is a schematic front cross-sectional view of the cooling structure of the present invention; Figure 8 This is a first-view schematic diagram of the main cross-section of the purification structure of the present invention; Figure 9 This is a second-view schematic diagram of the main cross-section of the purification structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point A in the middle; Figure 11 This is a side cross-sectional view of the purification structure of the present invention.

[0016] The following are the annotations in the diagram: 1. Tank body; 11. Lower seal; 111. Waste discharge pipe; 112. Support; 12. Liquid level observation pipe; 13. Upper seal; 14. Exhaust pipe; 15. Drive motor; 16. Gearbox; 2. Filter structure; 21. Filter box; 22. Door panel; 23. Cover plate; 24. Baffle plate; 25. Filter element; 26. Limiting plate; 3. Cooling structure; 31. Cooling pipe; 32. Gas supply pipe; 33. Drain pipe; 34. Bracket; 35. Water inlet pipe; 4. Online conductivity meter; 41. Drain pipe; 42. Inlet pipe; 5. Purification structure; 51. Return plate; 52. Rotating shaft; 53. Paddle; 54. Fixed rod; 55. Worm gear agitator; 56. Ring pipe; 561. Connecting pipe; 562. Fixed seat; 563. Connecting seat; 564. Exhaust port. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-11 The present invention provides an exhaust gas treatment device for packaging bag production, comprising a tank 1.

[0019] Reference Figure 1 and Figures 4-6 As shown, a filter structure 2 is provided on one side of the tank body 1. The filter structure 2 includes a filter box 21 provided on one side of the tank body 1. A door panel 22 is movably installed on one side of the bottom of the filter box 21. A cover plate 23 is fixedly installed on the top of the filter box 21. A filter element 25 is provided in the middle position inside the filter box 21. Limiting plates 26 are fixed on the inner walls of the filter box 21 on both sides of the filter element 25. A baffle plate 24 is fixed at the bottom of the cover plate 23 on both sides of the filter element 25.

[0020] The cooled exhaust gas is discharged into the filter box 21 through the gas supply pipe 32, and then discharged through the connecting pipe 561. The filter element 25, which is fixed inside the filter box 21 by the limiting plate 26, filters the exhaust gas to prevent waste residue from entering the reaction liquid. At the same time, under the action of the baffle 24, the gas passes through the filter element 25 evenly, preventing the exhaust gas in the gas supply pipe 32 from impacting the same position of the filter element 25 and causing local blockage of the filter element 25, thus extending the service life of the filter element 25. The waste residue accumulated inside the filter box 21 can be cleaned regularly by opening the door plate 22.

[0021] Reference Figure 1 and Figure 7 As shown, a cooling structure 3 is provided on the side of the filter structure 2 away from the tank 1. The cooling structure 3 includes a cooling pipe 31 located on the side of the filter box 21 away from the tank 1. An air supply pipe 32 passes through the inside of the cooling pipe 31. A drain pipe 33 is fixed on the outer wall of the top of the cooling pipe 31. A water inlet pipe 35 is fixed on the outer wall of the bottom of the cooling pipe 31. Supports 34 are evenly fixed at the bottom end of the cooling pipe 31. The cooling pipe 31 is inclined. One end of the air supply pipe 32 is connected to one side of the filter box 21. A water supply pipe is connected to the outside of the water inlet pipe 35. A water outlet pipe is connected to the outside of the drain pipe 33.

[0022] When the exhaust gas enters the filter box 21 through the gas supply pipe 32, cold water enters the cooling pipe 31 through the water inlet pipe 35 and then exits through the drain pipe 33. The cold water inside the cooling pipe 31 will cool down the exhaust gas inside the gas supply pipe 32.

[0023] Reference Figure 3 and Figures 8-11As shown, an online conductivity meter 4 is fixed on the side of the tank 1 away from the filter structure 2. A purification structure 5 is installed inside the tank 1. The purification structure 5 includes a rotating shaft 52 located in the middle of the tank 1. Paddles 53 are evenly fixed to the outer wall of the rotating shaft 52. A fixing rod 54 is evenly fixed to the outer wall of the bottom of the rotating shaft 52 via bearings. A worm gear agitator 55 is fixed to the bottom end of the rotating shaft 52. A reflux plate 51 is fixed to the inner wall of the tank 1 above the paddles 53. A ring pipe is installed below the worm gear agitator 55. 56. The return plate 51 is conical in shape. The top end of the rotating shaft 52 extends to the outside of the upper sealing seat 13 and is fixedly connected to the output end of the gearbox 16. The blade 53 is inclined. The end of the fixing rod 54 away from the rotating shaft 52 is fixedly connected to the inner wall of the tank body 1. A connecting pipe 561 is fixedly installed on one side of the top end of the ring pipe 56. The top end of the ring pipe 56 is evenly provided with exhaust holes 564. A connecting seat 563 is fixedly installed at the bottom end of the ring pipe 56. A fixing seat 562 is fixedly installed at the top end of the connecting seat 563 on the outside of the ring pipe 56. One end of the connecting pipe 561 extends to the outside of the tank 1 and is connected to one side of the filter box 21. The outer wall of the fixing seat 562 is fixedly connected to the inner wall of the tank 1. A liquid level observation pipe 12 is fixed on the outer wall of one side of the tank 1. A lower sealing seat 11 is fixedly installed at the bottom of the tank 1. An upper sealing seat 13 is fixedly installed at the top of the tank 1. A gearbox 16 is fixedly installed at the top of the upper sealing seat 13. A waste discharge pipe 111 is fixed at the middle position of the bottom of the lower sealing seat 11. The outer side of the waste discharge pipe 111 at the bottom of the lower sealing seat 11... Supports 112 are evenly fixed. Both ends of the liquid level observation tube 12 are connected to the inside of the tank 1. An exhaust pipe 14 is fixed on one side of the top of the upper sealing seat 13. A drive motor 15 is fixedly installed on the top of the gearbox 16. The output end of the drive motor 15 is fixedly connected to the input end of the gearbox 16. A drain pipe 41 is fixed on the outer wall of the tank 1 below the online conductivity meter 4. An inlet pipe 42 is fixed on the outer wall of the tank 1 above the online conductivity meter 4. The input end of the online conductivity meter 4 extends into the inside of the tank 1.

[0024] An external power supply is used. The filtered exhaust gas enters the interior of the ring pipe 56 through the connecting pipe 561, and then is discharged into the reaction liquid inside the tank 1 through the exhaust port 564. Under the action of the exhaust port 564, the exhaust gas is dispersed in the reaction liquid in the form of bubbles, increasing the contact area between the exhaust gas and the reaction liquid. The drive motor 15 is started, and the drive motor 15 drives the rotating shaft 52 to rotate through the reduction gearbox 16. The rotating shaft 52 drives the worm gear agitator 55 to rotate. The worm gear agitator 55 drives the reaction liquid to move radially and breaks the bubbles into smaller bubbles, further increasing the contact area between the exhaust gas and the reaction liquid. At the same time, the rotating shaft 52 drives the paddle 53 to rotate. The paddle 53 drives the reaction liquid to move axially, so that the reaction liquid and the small bubbles are fully mixed, and the reaction is more complete. During the stirring process, the reaction liquid is subjected to centrifugal force, and the reaction... The liquid will surge up along the inner wall of the tank 1. Under the action of the reflux plate 51, the surging reaction liquid on the inner wall of the tank 1 will cover the top of the reaction liquid on the outer wall of the rotating shaft 52. The collision of the liquid surfaces will cause the bubbles moving towards the surface of the reaction liquid to break and mix with the reaction liquid again, so that the exhaust gas and the reaction liquid react more fully and avoid the residue of harmful substances in the exhaust gas. The purified exhaust gas is discharged through the exhaust pipe 14. The online conductivity meter 4 will monitor the concentration of the reaction liquid inside the tank 1 in real time. When the concentration is too low, the online conductivity meter 4 will add the reaction liquid into the tank 1 through the liquid inlet pipe 42, and at the same time, it will discharge the reaction liquid after the reaction through the liquid outlet pipe 41. The liquid level of the reaction liquid inside the tank 1 can be viewed through the liquid level observation pipe 12. The sediment accumulated inside the tank 1 can be periodically discharged through the lower seal 11.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An exhaust gas treatment device for packaging bag production, comprising a tank (1); Its features are: A filter structure (2) is provided on one side of the tank (1), a cooling structure (3) is provided on the side of the filter structure (2) away from the tank (1), an online conductivity meter (4) is fixed on the side of the tank (1) away from the filter structure (2), and a purification structure (5) is provided inside the tank (1). A liquid level observation tube (12) is fixed on the outer wall of one side of the tank (1), a lower sealing seat (11) is fixedly installed at the bottom of the tank (1), an upper sealing seat (13) is fixedly installed at the top of the tank (1), and a gearbox (16) is fixedly installed at the top of the upper sealing seat (13). The purification structure (5) includes a rotating shaft (52) located in the middle of the tank (1). Paddles (53) are uniformly fixed on the outer wall of the rotating shaft (52). A fixing rod (54) is uniformly fixed on the outer wall of the bottom of the rotating shaft (52) through a bearing. A worm gear agitator (55) is fixed at the bottom of the rotating shaft (52). A reflux plate (51) is fixed on the inner wall of the tank (1) above the paddles (53). A ring pipe (56) is provided below the worm gear agitator (55).

2. The exhaust gas treatment device for packaging bag production according to claim 1, characterized in that: A waste discharge pipe (111) is fixed at the middle position of the bottom end of the lower seal (11), and supports (112) are evenly fixed on the outside of the waste discharge pipe (111) at the bottom end of the lower seal (11). Both ends of the liquid level observation pipe (12) are connected to the inside of the tank (1).

3. The exhaust gas treatment device for packaging bag production according to claim 1, characterized in that: An exhaust pipe (14) is fixed on one side of the top of the upper sealing seat (13), and a drive motor (15) is fixedly installed on the top of the gearbox (16). The output end of the drive motor (15) is fixedly connected to the input end of the gearbox (16).

4. The exhaust gas treatment device for packaging bag production according to claim 1, characterized in that: The filter structure (2) includes a filter box (21) disposed on one side of the tank (1). A door panel (22) is movably installed on one side of the bottom of the filter box (21). A cover plate (23) is fixedly installed on the top of the filter box (21). A filter element (25) is disposed in the middle position inside the filter box (21). Limiting plates (26) are fixed on the inner walls of the filter box (21) on both sides of the filter element (25). A baffle plate (24) is fixed at the bottom of the cover plate (23) on both sides of the filter element (25).

5. The exhaust gas treatment device for packaging bag production according to claim 4, characterized in that: The cooling structure (3) includes a cooling pipe (31) disposed on the side of the filter box (21) away from the tank (1). A gas supply pipe (32) runs through the inside of the cooling pipe (31). A drain pipe (33) is fixed on the outer wall of the top of the cooling pipe (31). A water inlet pipe (35) is fixed on the outer wall of the bottom of the cooling pipe (31). A bracket (34) is evenly fixed at the bottom end of the cooling pipe (31).

6. The exhaust gas treatment device for packaging bag production according to claim 5, characterized in that: The cooling pipe (31) is inclined, one end of the air supply pipe (32) is connected to one side of the filter box (21), the water inlet pipe (35) is connected to the water supply pipe, and the drain pipe (33) is connected to the water outlet pipe.

7. The exhaust gas treatment device for packaging bag production according to claim 1, characterized in that: A drain pipe (41) is fixed on the outer wall of the tank (1) below the online conductivity meter (4), and an inlet pipe (42) is fixed on the outer wall of the tank (1) above the online conductivity meter (4). The input end of the online conductivity meter (4) extends into the interior of the tank (1).

8. The exhaust gas treatment device for packaging bag production according to claim 1, characterized in that: The return plate (51) is conical in shape, the top end of the rotating shaft (52) extends to the outside of the upper sealing seat (13) and is fixedly connected to the output end of the gearbox (16), the blade (53) is inclined, and the end of the fixing rod (54) away from the rotating shaft (52) is fixedly connected to the inner wall of the tank (1).

9. The exhaust gas treatment device for packaging bag production according to claim 1, characterized in that: A connecting pipe (561) is fixedly installed on one side of the top end of the ring pipe (56). Vent holes (564) are evenly opened at the top end of the ring pipe (56). A connecting seat (563) is fixed at the bottom end of the ring pipe (56). A fixing seat (562) is fixedly installed at the top end of the connecting seat (563) on the outside of the ring pipe (56).

10. The exhaust gas treatment device for packaging bag production according to claim 9, characterized in that: One end of the connecting pipe (561) extends to the outside of the tank (1) and is connected to one side of the filter box (21). The outer wall of the fixing seat (562) is fixedly connected to the inner wall of the tank (1).

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