Waste gas purification treatment device for paper product production

Abstract

The invention relates to the technical field of paper product production, in particular to a waste gas purification treatment device for paper product production, which comprises a drying dust removal assembly and a light-oxygen catalytic oxidation assembly, a plurality of insertion barrels are fixedly mounted at the top end of a shell, insertion pieces are mounted on the inner sides of the insertion barrels, a plurality of annular grooves are formed in the insertion barrels, and cylinders are mounted at the bottom ends of the insertion pieces; a first rolling piece and a second rolling piece are installed in the cylinder, and a driving mechanism is arranged between the first rolling piece and the second rolling piece. According to the waste gas purification treatment device for paper product production, a working driving mechanism acts on a first rolling piece and a second rolling piece, so that the first rolling piece on the outer side shrinks towards the inner side, the second rolling piece on the inner side expands towards the outer side, and then a gap between the outer wall of a cylinder and an annular groove is enlarged, so that the time for waste gas to penetrate through a circulation channel is prolonged; the time of the waste gas in the photo-oxidation catalytic oxidation assembly is prolonged, so that the waste gas can fully react.

Description

Technical Field

[0001] The present invention relates to the technical field of paper product production, and in particular to an exhaust gas purification and treatment device for paper product production. Background Art

[0002] Paper product production refers to the production activities of using paper and cardboard as raw materials and further processing them into paper products. Its advantages are high cost-effectiveness and good elasticity and toughness. Paper product production will produce waste gas, and the current common method is to use photocatalytic oxidation to treat the waste gas.

[0003] Photocatalytic oxidation technology is mainly used to treat volatile organic compounds and malodorous gases; these waste gases are usually low in concentration, complex in composition, and difficult to biodegrade. Photocatalytic technology uses ultraviolet light to excite catalysts, generating highly oxidizing free radicals that decompose organic matter into carbon dioxide and water. However, in the process of purifying waste gas using existing photocatalytic oxidation equipment, when the concentration of organic matter and malodorous gases in the waste gas is high, the high-concentration waste gas cannot completely react in the equipment, resulting in incomplete purification.

[0004] In order to solve the above problems, we have made improvements and proposed a waste gas purification and treatment device for paper product production. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides an exhaust gas purification and treatment device for paper product production, comprising a dry dust removal component and a photocatalytic oxidation component, wherein the dry dust removal component is connected to the photocatalytic oxidation component via a connecting pipe, and the photocatalytic oxidation component comprises a shell, a plurality of inserts being fixedly mounted on the top of the shell, a plug being mounted on the inner side of the insert, a plurality of annular grooves being provided inside the insert, a cylinder being mounted on the bottom end of the plug, and the cylinder being matched with the annular groove, the cylinder being hollow, and the wall of the cylinder being made of elastic material, a first roll and a second roll being mounted inside the cylinder, the outer wall of the first roll being connected to the outer wall of the cylinder, the inner wall of the second roll being connected to the inner wall of the cylinder, and a driving mechanism being provided between the first roll and the second roll.

[0007] As a preferred technical solution of the present invention, the driving mechanism includes a transmission rod, which is arranged on the inner side of the cylinder and penetrates to the upper end surface of the plug-in. A pair of driving gears are fixedly installed on the outer side of the transmission rod. The pair of driving gears are respectively meshed and connected with two racks, and the two racks are respectively fixed on the inner side of the first roll and the outer side of the second roll.

[0008] As a preferred technical solution of the present invention, a motor is fixedly installed on the top of the plug-in, the output end of the motor is fixedly connected to a driving gear, the side of the driving gear is meshed with a driven gear, and the driven gear is fixedly connected to the top of the transmission rod.

[0009] As a preferred technical solution of the present invention, the drying dust removal assembly includes an outer cylinder, an inner cylinder is fixedly installed inside the outer cylinder, a filter is provided between the inner cylinder and the outer cylinder, and an air intake head is rotatably installed at the bottom end of the inner cylinder.

[0010] As a preferred technical solution of the present invention, a plurality of nozzles are fixedly connected to the side of the air intake head, and there is a certain angle between the nozzle and the radial direction of the air intake head. A push rod is fixedly connected to the bottom end of the side of the air intake head, and the push rod is a spiral rod.

[0011] As a preferred technical solution of the present invention, a conical block is installed on the top of the inner cylinder, a mounting ring is rotatably installed on the outer side of the conical block, and a plurality of blades are installed along the circumference on the inner side of the mounting ring, wherein the bottom end of one of the blades is fixedly connected to a scraper rod, and the scraper rod is spirally arranged along the inner wall of the inner cylinder.

[0012] As a preferred technical solution of the present invention, the inner top of the outer cylinder is fixedly connected with a cover plate, and the middle of the top of the cover plate is fixedly connected to the conical block. The cover plate covers the top of the inner cylinder, and a gap is left between the cover plate and the inner cylinder.

[0013] As a preferred technical solution of the present invention, an air outlet pipe is fixedly connected to the top of the insert, multiple air outlet pipes are connected to the exhaust main pipe, and electromagnetic valves are provided at the air inlet and outlet of the insert.

[0014] As a preferred technical solution of the present invention, a cooling pipe is provided in the inner wall of the inner cylinder, and the cooling pipe extends to the interior of the conical block.

[0015] The beneficial effects of the present invention are:

[0016] 1. The waste gas purification and treatment device for paper product production acts on the first and second rolls through the working drive mechanism, causing the outer first roll to contract inward and the inner second roll to expand outward, thereby increasing the gap between the outer wall of the cylinder and the annular groove. When the air supply speed of the connecting pipe remains unchanged, the time for the waste gas to pass through the circulation channel is increased, which increases the time the waste gas spends in the photocatalytic oxidation component, allowing it to fully react.

[0017] 2. For waste gas purification and treatment devices used in paper product production, when a certain insert or plug-in fails, the two solenoid valves on the corresponding insert are closed, and the part can be removed separately for maintenance. When the faulty part is removed, the drive mechanism works to shrink the cylinder inward, expanding the gap between the cylinder and the annular groove, thereby increasing the capacity of a single insert or plug-in, and preventing excess waste gas from entering other inserts and plug-ins and causing insufficient reaction.

[0018] 3. Waste gas purification and treatment device for paper product production. After the waste gas is ejected from the air inlet head and nozzle, the nozzle is subjected to the reaction force of the waste gas to cause the air inlet head to rotate inside the inner cylinder, and then the push rod rotates at the bottom of the inner cylinder, which can push the dirt to the sewage outlet, assist in sewage discharge, and facilitate use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a perspective view of an exhaust gas purification and treatment device for paper product production according to the present invention;

[0021] Figure 2 This is a cross-sectional view of an exhaust gas purification and treatment device for paper product production according to the present invention;

[0022] Figure 3 The invention is a waste gas purification device for paper product production Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a partial cross-sectional view of the waste gas purification and treatment device for paper product production according to the present invention;

[0024] Figure 5 This is a schematic diagram of the insert and plug-in unit of the waste gas purification and treatment device for paper product production of the present invention;

[0025] Figure 6 This is a schematic diagram of the first roll of the waste gas purification and treatment device for paper product production of the present invention;

[0026] In the figure: 1. Drying and dust removal component; 2. Connecting pipe; 3. Photocatalytic oxidation component; 4. Outer cylinder; 5. Inner cylinder; 6. Air inlet head; 7. Conical block; 8. Filter; 9. Housing; 10. Insert cylinder; 11. Plug-in unit; 12. Motor; 13. Driving gear; 14. Driven gear; 15. Cover plate; 16. Mounting ring; 17. Blade; 18. Scraper rod; 19. Nozzle; 20. Push rod; 21. Cylinder; 22. First roll; 23. Second roll; 24. Rack; 25. Drive gear; 26. Transmission rod. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example: Figures 1-6 As shown, the waste gas purification and treatment device for paper product production includes a dry dust removal component 1 and a photocatalytic oxidation component 3. The dry dust removal component 1 is connected to the photocatalytic oxidation component 3 through a connecting pipe 2. The photocatalytic oxidation component 3 includes a shell 9. A plurality of inserts 10 are fixedly installed on the top of the shell 9. A plug 11 is installed on the inner side of the insert 10. A plurality of annular grooves are provided inside the insert 10. A cylinder 21 is installed at the bottom end of the plug 11, and the cylinder 21 cooperates with the annular groove. The cylinder 21 is hollow, and the wall of the cylinder 21 is made of elastic material, the side wall of the cylinder 21 is made of elastic material, and the bottom is made of hard material. A fixing rod is provided between the bottom of the cylinder 21 and the top of the plug 11 for fixing the overall height of the cylinder 21 and maintaining the distance between the cylinder 21 and the bottom surface of the annular groove. The cylinder 21 is installed inside There are a first coil 22 and a second coil 23, the outer wall of the first coil 22 is connected to the outer wall of the cylinder 21, and the inner wall of the second coil 23 is connected to the inner wall of the cylinder 21. A driving mechanism is provided between the first coil 22 and the second coil 23. The outer wall of the annular groove inside the insert 10 is coated with a titanium dioxide catalyst. The outer surface of the cylinder 21 is installed with a strip UV lamp, and the UV lamp is arranged along the axial direction of the cylinder 21. A concentration detection sensor for odorous gas and organic matter is installed inside the connecting pipe 2, and the sensor is connected to the driving mechanism through a controller. After the plug 11 is inserted into the insert 10, a gap is left between the bottom end of the plug 11 and the insert 10, and between the top end of the insert 10 and the plug 11. There is a gap between the annular groove of the cylinder 21, so that a curved air circulation channel is formed between the insert 10 and the plug 11;

[0029] The exhaust gas enters the drying and dust removal component 1 for drying and dust removal operations, and then enters the shell 9 at the bottom of the photocatalytic oxidation component 3 through the connecting pipe 2. Then the exhaust gas enters each insert 10 through the shell 9. The exhaust gas enters the insert 10 from the center of the insert 10, and then flows along the flow channel formed between the insert 10 and the plug 11. During the flow of the exhaust gas, under the action of the UV lamp and the titanium dioxide catalyst, strong oxidizing free radicals are generated, which decompose the organic matter into carbon dioxide and water. When the concentration of organic matter and odorous gas in the exhaust gas is high, the driving mechanism starts to work, and the working driving mechanism acts on the first roll 22 and the second roll 2 3, the outer first coil 22 contracts inwardly and the inner second coil 23 expands outwardly, thereby increasing the gap between the outer wall of the cylinder 21 and the annular groove. When the air supply speed of the connecting pipe 2 remains unchanged, the time for the exhaust gas to pass through the circulation channel is increased, and the time the exhaust gas stays in the photo-catalytic oxidation component 3 is increased, so that it can fully react. The driving mechanism moves in the opposite direction, causing the first coil 22 to expand outwardly and the second coil 23 to contract inwardly, thereby reducing the gap between the cylinder 21 and the annular groove. This can shorten the time that the exhaust gas with lower concentration stays in the photo-catalytic oxidation component 3 for the exhaust gas with lower concentration, thereby improving work efficiency.

[0030] Preferably, reference Figure 2 、 Figure 3 and Figure 6 The driving mechanism includes a transmission rod 26, which is arranged on the inner side of the cylinder 21 and passes through the upper end surface of the plug-in 11. A pair of driving gears 25 are fixedly installed on the outer side of the transmission rod 26. The pair of driving gears 25 are respectively meshed and connected to two racks 24. The two racks 24 are respectively fixedly installed on the inner side of the first roll 22 and the outer side of the second roll 23. The top of the plug-in 11 is fixedly installed with a motor 12. The output end of the motor 12 is fixedly connected to a driving gear 13. The side of the driving gear 13 is meshed and connected to a driven gear 14, and the driven gear 14 is fixedly connected to the top of the transmission rod 26. The exhaust gas concentration sensor is electrically connected to the motor 12 through the controller. The motor 12 drives the driving gear 13 to rotate. The rotating driving gear 13 drives the transmission rod 26 to rotate through the driven gear 14, thereby causing the driving gear 25 on the transmission rod 26 to act on the rack 24, thereby causing the first roll 22 and the second roll 23 to move in the cylinder 21;

[0031] Two spiral chute are opened at the top of the cylinder 21, which respectively cooperate with the movable ends of the first wrap 22 and the second wrap 23. The first wrap 22 and the second wrap 23 move along the two chute.

[0032] For further reference, Figure 1 、 Figure 2 and Figure 4The drying and dust removal component 1 includes an outer cylinder 4, an inner cylinder 5 is fixedly installed inside the outer cylinder 4, a filter screen 8 is arranged between the inner cylinder 5 and the outer cylinder 4, an air inlet head 6 is rotatably installed at the bottom end of the inner cylinder 5, and a sewage outlet is arranged at the bottom of the inner cylinder 5 near the outside. The exhaust gas enters the inner cylinder 5 through the air inlet head 6 at the bottom end, and then the exhaust gas goes up along the inner cylinder 5, and then enters between the inner cylinder 5 and the outer cylinder 4, and then passes through the filter screen 8, so that the dust remains on the inner side of the filter screen 8, and the exhaust gas is dust-removed.

[0033] For further reference, Figure 2 and Figure 4 A plurality of nozzles 19 are fixedly connected to the side of the air intake head 6, and there is a certain angle between the nozzle 19 and the radial direction of the air intake head 6. A push rod 20 is fixedly connected to the bottom end of the side of the air intake head 6, and the push rod 20 is a vortex-shaped rod. The push rod 20 is a lightweight rod. After the exhaust gas is ejected from the air intake head 6 and the nozzle 19, the nozzle 19 is subjected to the reaction force of the exhaust gas to cause the air intake head 6 to rotate inside the inner tube 5, and then the push rod 20 rotates at the bottom of the inner tube 5, which can push the dirt to the sewage outlet.

[0034] For further reference, Figure 4 The top of the inner cylinder 5 is provided with a conical block 7, and the outer side of the conical block 7 is rotatably provided with a mounting ring 16. The inner side of the mounting ring 16 is provided with a plurality of blades 17 along the circumference, and the bottom end of one of the blades 17 is fixedly connected to a scraper 18, and the scraper 18 is spirally arranged along the inner wall of the inner cylinder 5. A cooling pipe is provided inside the inner wall of the inner cylinder 5, and the cooling pipe extends to the inside of the conical block 7. The cooling pipe is connected to a water cooler, and the temperature of the inner cylinder 5 and the conical block 7 is reduced by the liquid cooling method. When the exhaust gas contacts the inner cylinder 5 and the conical block 7, the water vapor in the exhaust gas condenses to form water droplets, which dries the exhaust gas to a certain extent. The water droplets condense on the inner wall of the inner cylinder 5, and the exhaust gas goes up along the inner cylinder 5 and passes through the blades 17 on the mounting ring 16. The exhaust gas pushes the blades 17 and the mounting ring 16 to rotate, thereby causing the scraper 18 to move along the inner wall of the inner cylinder 5, scraping the water droplets and dust on the inner cylinder 5 to the bottom of the inner cylinder 5, and pushing them to the sewage outlet as the push rod 20 works.

[0035] Specifically, refer to Figure 4 The inner top of the outer cylinder 4 is fixedly connected with a cover plate 15, and the middle part of the top of the cover plate 15 is fixedly connected to the conical block 7. The cover plate 15 is buckled on the top of the inner cylinder 5. The cover plate 15 covers the top of the inner cylinder 5, and a gap is left between the cover plate 15 and the inner cylinder 5. The exhaust gas enters the outer cylinder 4 along the gap between the cover plate 15 and the inner cylinder 5, avoiding the exhaust gas from flowing back into the inner cylinder 5 and avoiding too much dust from being left in the inner cylinder 5, which affects the self-purification ability of the inner cylinder 5.

[0036] For further reference, Figure 1 and Figure 2The top of the insert 10 is fixedly connected to an outlet pipe, and multiple outlet pipes are connected to the exhaust main pipe. Solenoid valves are provided at the air inlet and outlet of the insert 10. When a certain insert 10 and plug-in 11 fails, the two solenoid valves on the corresponding insert 10 are closed, and the part can be removed separately for maintenance. When the faulty part is removed, the driving mechanism works to make the cylinder 21 contract inward, expand the gap between the cylinder 21 and the annular groove, and thereby increase the capacity of a single insert 10 and plug-in 11, and prevent excess exhaust gas from entering other inserts 10 and plug-ins 11 and causing insufficient reaction.

[0037] Working principle: The exhaust gas enters the inner cylinder 5 through the air inlet head 6 at the bottom, then goes up along the inner cylinder 5 and contacts the inner cylinder 5 and the conical block 7. The low temperature causes the water vapor in the exhaust gas to condense and condense on the inner wall of the conical block 7 and the inner cylinder 5. Then the dried exhaust gas passes through the blades 17 and enters the outer cylinder 4 along the gap between the cover plate 15 and the inner cylinder 5. The exhaust gas passes through the filter screen 8, leaving the dust in the filter screen 8. The dried and dust-removed exhaust gas enters the photocatalytic oxidation component 3 along the connecting pipe 2.

[0038] The exhaust gas enters each insert 10 through the housing 9. The exhaust gas enters the insert 10 from the center of the insert 10 and then flows along the flow channel formed between the insert 10 and the plug 11. During the flow of the exhaust gas, under the action of the UV lamp and the titanium dioxide catalyst, strong oxidizing free radicals are generated, which decompose organic matter into carbon dioxide and water.

[0039] When the concentration of organic matter and malodorous gas in the exhaust gas is high, the driving mechanism starts to work. The working driving mechanism acts on the first roll 22 and the second roll 23, causing the outer first roll 22 to shrink inward and the inner second roll 23 to expand outward, thereby increasing the gap between the outer wall of the cylinder 21 and the annular groove. When the air supply speed of the connecting pipe 2 remains unchanged, the time for the exhaust gas to pass through the circulation channel is increased, and the time for the exhaust gas to stay in the photocatalytic oxidation component 3 is increased, so that it can fully react. The driving mechanism moves in the opposite direction, causing the first roll 22 to expand outward and the second roll 23 to shrink inward, thereby reducing the gap between the cylinder 21 and the annular groove. For exhaust gas with lower concentration, the time for exhaust gas with lower concentration to stay in the photocatalytic oxidation component 3 is shortened, thereby improving working efficiency.

[0040] When a certain insert 10 or plug 11 fails, the two solenoid valves on the corresponding insert 10 are closed, and the part can be removed separately for repair. When the failed part is removed, the drive mechanism operates to cause the cylinder 21 to retract inward, expanding the gap between the cylinder 21 and the annular groove, thereby increasing the capacity of the single insert 10 or plug 11, and preventing excess exhaust gas from entering other inserts 10 or plugs 11 and causing insufficient reaction.

[0041] When the exhaust gas enters and exits the inner cylinder 5, the exhaust gas goes up along the inner cylinder 5 and passes through the blades 17 on the mounting ring 16. The exhaust gas pushes the blades 17 and the mounting ring 16 to rotate, thereby causing the scraper 18 to move along the inner wall of the inner cylinder 5, scraping the water droplets and dust on the inner cylinder 5 to the bottom of the inner cylinder 5. After the exhaust gas is ejected from the air intake head 6 and the nozzle 19, the nozzle 19 is subjected to the reaction force of the exhaust gas to cause the air intake head 6 to rotate inside the inner cylinder 5, thereby causing the push rod 20 to rotate at the bottom of the inner cylinder 5, pushing the dirt to the sewage outlet to assist in sewage discharge.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A waste gas purification device for paper product production, comprising a drying dust removal component (1) and a photocatalytic oxidation component (3), characterized in that: The drying dust removal component (1) is connected to the photocatalytic oxidation component (3) through a connecting pipe (2). The photocatalytic oxidation component (3) includes a shell (9). A plurality of inserts (10) are fixedly installed on the top of the shell (9). A plug (11) is installed on the inner side of the insert (10). A plurality of annular grooves are provided inside the insert (10). A cylinder (21) is installed on the bottom end of the plug (11), and the cylinder (21) cooperates with the annular grooves. The cylinder (21) is hollow, and the wall of the cylinder (21) is made of elastic material. A first roll (22) and a second roll (23) are installed inside the cylinder (21). The outer wall of the first roll (22) is connected to the outer wall of the cylinder (21), and the inner wall of the second roll (23) is connected to the inner wall of the cylinder (21). A driving mechanism is provided between the first roll (22) and the second roll (23).

2. The waste gas purification device for paper product production according to claim 1, characterized in that: The driving mechanism comprises a transmission rod (26), the transmission rod (26) being arranged on the inner side of the cylinder (21) and penetrating to the upper end surface of the plug-in unit (11), a pair of driving gears (25) being fixedly mounted on the outer side of the transmission rod (26), the pair of driving gears (25) being respectively meshed and connected with two racks (24), and the two racks (24) being respectively fixedly mounted on the inner side of the first roll (22) and the outer side of the second roll (23).

3. The waste gas purification device for paper product production according to claim 1, characterized in that: A motor (12) is fixedly mounted on the top of the plug-in (11), an output end of the motor (12) is fixedly connected to a driving gear (13), a side of the driving gear (13) is meshedly connected to a driven gear (14), and the driven gear (14) is fixedly connected to the top of a transmission rod (26).

4. The waste gas purification device for paper product production according to claim 1, characterized in that: The drying and dust removal assembly (1) comprises an outer cylinder (4), an inner cylinder (5) is fixedly mounted inside the outer cylinder (4), a filter screen (8) is provided between the inner cylinder (5) and the outer cylinder (4), and an air intake head (6) is rotatably mounted at the bottom end of the inner cylinder (5).

5. The waste gas purification device for paper product production according to claim 4, characterized in that: A plurality of nozzles (19) are fixedly connected to the side of the air intake head (6), and a certain angle is formed between the nozzles (19) and the radial direction of the air intake head (6). A push rod (20) is fixedly connected to the bottom end of the side of the air intake head (6), and the push rod (20) is a vortex-shaped rod.

6. The waste gas purification device for paper product production according to claim 4, characterized in that: A conical block (7) is installed on the top of the inner cylinder (5), a mounting ring (16) is rotatably installed on the outer side of the conical block (7), and a plurality of blades (17) are installed along the circumference of the inner side of the mounting ring (16), wherein the bottom end of one of the blades (17) is fixedly connected to a scraper rod (18), and the scraper rod (18) is spirally arranged along the inner wall of the inner cylinder (5).

7. The waste gas purification device for paper product production according to claim 4, characterized in that: The inner top end of the outer cylinder (4) is fixedly connected to a cover plate (15), and the middle portion of the top end of the cover plate (15) is fixedly connected to the conical block (7). The cover plate (15) covers the top end of the inner cylinder (5) and a gap is left between the cover plate (15) and the inner cylinder (5).

8. The waste gas purification device for paper product production according to claim 1, characterized in that: An air outlet pipe is fixedly connected to the top of the insert (10), and a plurality of the air outlet pipes are connected to an exhaust main pipe. Solenoid valves are provided at the air inlet and the air outlet of the insert (10).

9. The waste gas purification device for paper product production according to claim 4, characterized in that: A cooling pipe is provided inside the inner wall of the inner cylinder (5), and the cooling pipe extends to the interior of the conical block (7).

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