Tobacco VOC peculiar smell gas collecting device

Abstract

The invention discloses a tobacco VOC peculiar smell gas collecting device which comprises a collector and a gas collecting hood, and an exhaust fan, an adsorption filter assembly and a matrix type dielectric barrier discharge plasma assembly which are sequentially arranged from top to bottom are arranged in an inner cavity of the collector. The matrix type dielectric barrier discharge plasma assembly comprises a plurality of dielectric barrier discharge structures distributed in a matrix mode, the area between the dielectric barrier discharge structures in adjacent columns forms a discharge area, the multiple dielectric barrier discharge structures in each row are installed on the same set of supporting frames, and each dielectric barrier discharge structure is rotationally installed on the corresponding supporting frame. The rotation driving assembly is used for driving the multiple dielectric barrier discharge structures to rotate back and forth, and reaction products on the surfaces of the dielectric barrier discharge structures are thrown out of the outer sides of the dielectric barrier discharge structures under the action of centrifugal force. The method has the advantages that reaction products are effectively prevented from being attached and accumulated on the surface of the dielectric barrier discharge structure, and the VOC gas treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of odor treatment equipment, and in particular to a tobacco VOC odor gas collection device. Background Art

[0002] During cigarette production, many processes generate various VOC (volatile organic compounds) odorous gases, which seriously impact air quality. Therefore, odorous gas emissions cannot be ignored. With society's growing emphasis on environmental protection, regulations have been introduced to control odorous gas emissions, placing higher demands on companies for environmentally friendly production and continuously improving emission standards for production waste gases. Ultimately, process waste gases must be discharged harmlessly, so strict control of gas emission standards is essential for business development.

[0003] To efficiently remove odors, cigarette factories rely on dielectric barrier discharge plasma technology to treat workshop odors. This technology uses a medium- to high-frequency electric field to generate plasma through gas discharge. This plasma rapidly oxidizes and decomposes aromatic hydrocarbons, lipids, alcohols, pyrazines, aldehydes, and ketones, breaking the chemical bonds of volatile organic gases and ultimately producing stable, harmless small molecules such as carbon dioxide and water, thereby purifying the air. Ion-based odor treatment technology effectively treats odorous gases with an efficiency exceeding 95%, and is easily automated and user-friendly. The equipment occupies a small footprint, requires no special maintenance, and offers high stability.

[0004] At present, there are two main ways to generate plasma by dielectric barrier discharge: sleeve type and flat plate type. Among them, in order to achieve better discharge effect, the net spacing between the inner and outer sleeves of the sleeve type dielectric barrier discharge plasma generation method is generally less than 10mm, so the gas resistance is large, which greatly affects the gas flow rate; while the flat plate type dielectric barrier discharge plasma generation method is difficult to apply due to the connection problem between the electrode and the dielectric layer and the tip discharge problem at the corners. In order to provide good gas flow rate and improve the processing efficiency of the equipment, it is necessary to adopt a matrix discharge equipment, that is, multiple rows of dielectric barrier discharge structures are set in the processing device, and multiple dielectric barrier discharge structures are set in each row to form a matrix distribution of multiple rows and columns. A discharge area is formed between two adjacent columns of dielectric barrier discharge structures, and then the VOC odor gas is controlled to pass through the discharge area in a direction perpendicular to the dielectric barrier discharge structure for ion treatment to eliminate the odor gas.

[0005] For cigarette workshops that produce more odorous gases, they produce more odorous gases, and the processing capacity of the processing equipment is larger than that of ordinary workshops. Therefore, the water generated during the treatment process will also increase. However, when the airflow passes through the dielectric barrier discharge structure, the side of the dielectric barrier discharge structure facing away from the airflow has a smaller airflow due to its own obstruction. Therefore, the water generated by the treatment at this position is not easily carried away by the airflow, but is easily gathered and attached to the surface of the dielectric barrier discharge structure. Therefore, as the device continues to work, if the water content in the equipment increases, it will affect the breakdown voltage and discharge current of the discharge structure, thereby affecting the treatment effect of the exhaust gas and reducing the treatment efficiency of the equipment. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a tobacco VOC odor gas collection device to prevent reaction products from adhering to and accumulating on the surface of a dielectric barrier discharge structure, thereby preventing the accumulation of reaction products from affecting the breakdown voltage and discharge current of the dielectric barrier discharge structure.

[0007] The present invention is achieved through the following technical solutions:

[0008] A tobacco VOC odor gas collection device includes a collector and a gas collection hood. The gas collection hood is connected to the air inlet end at the bottom of the collector through an air suction pipe. The air outlet end at the top of the collector is provided with an exhaust pipe. The inner cavity of the collector is provided with an exhaust fan, an adsorption filter component and a matrix dielectric barrier discharge plasma component arranged in sequence from top to bottom.

[0009] The matrix-type dielectric barrier discharge plasma assembly includes multiple dielectric barrier discharge structures, which are distributed in a matrix pattern. The area between adjacent columns of dielectric barrier discharge structures forms a discharge area. Several dielectric barrier discharge structures in each row are installed on the same set of support frames, and each dielectric barrier discharge structure is rotatably installed on the support frame. A rotation drive assembly is also provided in the collector. The rotation drive assembly is used to drive the multiple dielectric barrier discharge structures to rotate back and forth. When the dielectric barrier discharge structure stops rotating, the reaction products on the surface of the dielectric barrier discharge structure are thrown out of the dielectric barrier discharge structure under the action of centrifugal force.

[0010] As a preferred embodiment of the above-mentioned collecting device, an airflow guiding mechanism is further provided in the collector, and the airflow guiding mechanism includes a plurality of airflow guiding components. The plurality of airflow guiding components are arranged in a one-to-one correspondence with the plurality of discharge zones of the matrix dielectric barrier discharge plasma component, and are used to guide the airflow from the bottom to the top of the plurality of discharge zones.

[0011] As a preferred solution of the above-mentioned collecting device, two airflow guiding mechanisms are provided in the collector, and the two airflow guiding mechanisms are respectively located above and below the matrix-type dielectric barrier discharge plasma assembly.

[0012] As a preferred embodiment of the above-mentioned collecting device, the airflow guiding mechanism includes a partition plate and a plurality of airflow guiding components installed on the partition plate, each airflow guiding component includes an inner duct and an outer fixed tube that are nested inside and outside, the outer fixed tube is fixed on the partition plate, the inner duct is rotatably installed in the outer fixed tube, the internal channel of the inner duct forms an airflow channel for the airflow to pass through, and a plurality of spiral ribs are provided on the inner side wall of the inner duct along the circumferential direction. When the airflow passes through the inner duct, the spiral ribs guide the airflow to rotate.

[0013] As a preferred embodiment of the above-mentioned collecting device, the rotation drive assembly includes a linear drive, a connecting frame and a plurality of transverse pressure plates. The plurality of transverse pressure plates are located one by one above a plurality of rows of dielectric barrier discharge structures, and the bottom surfaces of the transverse pressure plates are pressed tightly against the upper surfaces of the corresponding rows of dielectric barrier discharge structures. The plurality of transverse pressure plates are connected together by a connecting frame, and the output end of the linear drive is fixedly connected to the connecting frame. The linear drive is used to drive the plurality of transverse pressure plates to move back and forth above the plurality of rows of dielectric barrier discharge structures, and the friction between the transverse pressure plates and the rows of dielectric barrier discharge structures drives the rows of dielectric barrier discharge structures to rotate back and forth.

[0014] As a preferred embodiment of the above-mentioned collecting device, a flexible insulating layer is provided at the bottom of the transverse pressing plate, and the transverse pressing plate is pressed tightly against the upper surface of the dielectric barrier discharge structure through the flexible insulating layer. The surface of the flexible insulating layer is provided with resistance-increasing patterns, and an extrusion depression area is formed on the surface of the flexible insulating layer under the extrusion action of the dielectric barrier discharge structure.

[0015] As a preferred embodiment of the above-mentioned collection device, the adsorption filtration assembly includes a mesh plate and a filter box. The mesh plates are arranged in two groups, and the two groups of mesh plates are arranged up and down and fixedly installed in the collector. The filter boxes are arranged in multiple groups arranged vertically at intervals, and the multiple groups of filter boxes are located in the area between the two groups of mesh plates. The filter box is a flat structure, and the inside of the filter box is filled with activated carbon particles.

[0016] As a preferred solution of the above-mentioned collection device, the adsorption filter assembly also includes a vibration frame and a vibration driver. Multiple groups of filter boxes are fixedly connected to the vibration frame. The vibration frame is vertically slidably installed in the collector. A receiving plate is provided under each filter box, and the receiving plate is fixedly installed in the collector. The vibration driver is used to drive the vibration frame and the multiple groups of filter boxes installed thereon to vibrate up and down.

[0017] As a preferred solution for the above-mentioned collecting device, the vibration driver includes a wheel rotatably installed in the collector, a convex plate is fixedly connected to the vibration frame, the wheel is arranged below the convex plate, a protrusion is provided on the circumferential side wall of the wheel, the wheel is driven to rotate by a motor, and an elastic member is provided between the side of the convex plate away from the wheel and the collector, and the elastic member is used to provide a downward elastic force to the vibration frame.

[0018] As a preferred embodiment of the above-mentioned collecting device, the dielectric barrier discharge structure is provided with shaft heads at both ends along the axial direction, each group of support frames includes two support frames, and the shaft heads at both ends of the dielectric barrier discharge structure are respectively rotatably mounted on the two support frames of each group of support frames. The support frames are provided with arc-shaped mounting grooves, and the shaft heads at the ends of the dielectric barrier discharge structure are rotatably supported in the arc-shaped mounting grooves of the support frames.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The present invention provides a tobacco VOC odor gas collection device. In a matrix-type dielectric barrier discharge plasma assembly disposed within the collector, each dielectric barrier discharge structure is rotatably mounted on a support frame, and a rotation drive assembly is used to drive the multiple dielectric barrier discharge structures to rotate back and forth. This prevents the dielectric barrier discharge structure surfaces from forming blind spots with the airflow, preventing them from contacting the airflow, thereby improving the discharge effect between adjacent dielectric barrier discharge structures. Furthermore, centrifugal force is utilized to eject reaction products on the dielectric barrier discharge structure surfaces toward the outside of the dielectric barrier discharge structures, preventing the adhesion and accumulation of reaction products such as water within the matrix-type dielectric barrier discharge plasma assembly. This effectively prevents the accumulation of reaction products such as water from affecting the breakdown voltage and discharge current of the dielectric barrier discharge structures, further improving the device's VOC gas treatment efficiency. Furthermore, the collector is provided with an airflow guiding mechanism that forms a rotating, ascending airflow within each discharge zone of the matrix-type dielectric barrier discharge plasma assembly, thereby concentrating the airflow within the discharge zone, increasing the airflow intensity within the discharge zone, extending the treatment time, and improving the VOC gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a cross-sectional view of the internal structure of the collector of the present invention.

[0023] Figure 3 It is an arrangement diagram of the matrix dielectric barrier discharge plasma component of the present invention.

[0024] Figure 4 yes Figure 2 Enlarged view of point A.

[0025] Figure 5 It is a top view of the connection position between the dielectric barrier discharge structure and the support frame of the present invention.

[0026] Figure 6 is a cross-sectional view of the airflow guide assembly of the present invention.

[0027] Figure 7is a cross-sectional view of the airflow guide assembly of the present invention.

[0028] Figure 8 It is a cross-sectional view of the overall structure of the adsorption filter assembly of the present invention.

[0029] Figure 9 yes Figure 8 A partial enlarged view of .

[0030] Figure 10 It is a structural schematic diagram of the vibration frame of the present invention.

[0031] Figure 11 It is a schematic diagram of the cooperation between the rotating wheel and the convex plate of the present invention.

[0032] Numbers in the figure: 1 collector, 2 gas collecting hood, 3 suction pipe, 4 exhaust pipe, 5 exhaust fan, 6 adsorption filter assembly, 7 matrix dielectric barrier discharge plasma assembly, 8 dielectric barrier discharge structure, 9 discharge area, 10 pulse power supply, 11 support frame, 12 shaft head, 13 linear drive, 14 connecting frame, 15 cross pressure plate, 16 flexible insulation layer, 17 air flow guiding mechanism, 18 partition plate, 19 air flow guiding assembly, 20 inner duct, 21 outer fixed pipe, 22 spiral rib, 23 mesh plate, 24 filter box, 25 vibration frame, 26 rotor, 27 receiving plate, 28 convex plate, 29 protrusion, 30 elastic member, 31 motor. DETAILED DESCRIPTION

[0033] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0034] See also Figures 1 to 11 This embodiment discloses a tobacco VOC odor gas collection device, comprising a collector 1 and an air hood 2. The air hood 2 is connected to the air inlet end at the bottom of the collector 1 via an air intake pipe 3. The air hood 2 can be set up in multiple groups according to the workshop environment, mainly for tobacco processing equipment that generates VOC gas, to absorb and collect the VOC gas generated by tobacco processing. At the same time, air hoods 2 can also be set up at workshop entrances and exits, windows, and other locations as needed to form multiple collection points in the workshop to reduce the escape of VOC gas. In order to prevent the entry of debris and dust, a filtering structure can also be set up on the air hood 2. An exhaust pipe 4 is set up at the air outlet end at the top of the collector 1. The inner cavity of the collector 1 is provided with an exhaust fan 5, an adsorption filter component 6, and a matrix dielectric barrier discharge plasma component 7 arranged in sequence from top to bottom.

[0035] The matrix-type dielectric barrier discharge plasma assembly 7 includes a plurality of dielectric barrier discharge structures 8 arranged in a matrix. The regions between adjacent rows of dielectric barrier discharge structures 8 form discharge regions 9. Electrodes are disposed within the dielectric barrier discharge structures 8 and are connected to a pulse power supply 10, which provides voltage, thereby forming discharge regions 9 between two adjacent dielectric barrier discharge structures 8. The dielectric barrier discharge structures 8 in each row are mounted on the same set of support frames 11. Each dielectric barrier discharge structure 8 is rotatably mounted on the support frame 11. Shaft heads 12 are provided at each axial end of the dielectric barrier discharge structure 8. Each set of support frames 11 includes two support frames 11. The shaft heads 12 at each end of the dielectric barrier discharge structure 8 are rotatably mounted on the two support frames 11 of each set of support frames 11. The support frames 11 are provided with arcuate mounting slots, and the shaft heads 12 at the ends of the dielectric barrier discharge structures 8 are rotatably supported in the arcuate mounting slots of the support frames 11. The collector 1 is also equipped with a rotation drive assembly for rotating the multiple dielectric barrier discharge structures 8 back and forth. When the dielectric barrier discharge structures 8 stop rotating, the reaction products on their surfaces are thrown outwards by centrifugal force. The reaction products are primarily water, with some solid waste, such as aerosol deposits, adhering to the surfaces of the dielectric barrier discharge structures 8.

[0036] The rotation drive assembly includes a linear driver 13, a connecting frame 14 and a plurality of transverse pressure plates 15. The plurality of transverse pressure plates 15 are located one by one above the plurality of rows of dielectric barrier discharge structures 8, and the bottom surfaces of the transverse pressure plates 15 are pressed tightly against the upper surfaces of the corresponding rows of dielectric barrier discharge structures 8. The plurality of transverse pressure plates 15 are connected together by the connecting frame 14. The linear driver 13 can be a cylinder. The output end of the linear driver 13 is fixedly connected to the connecting frame 14. The linear driver 13 is used to drive the plurality of transverse pressure plates 15 to move back and forth above the plurality of rows of dielectric barrier discharge structures 8. The friction between the transverse pressure plates 15 and the rows of dielectric barrier discharge structures 8 drives the rows of dielectric barrier discharge structures 8 to rotate back and forth.

[0037] A flexible insulating layer 16 is provided at the bottom of the transverse pressure plate 15. The flexible insulating layer 16 is made of a flexible insulating material, such as polytetrafluoroethylene. The transverse pressure plate 15 is pressed tightly against the upper surface of the dielectric barrier discharge structure 8 through the flexible insulating layer 16. The surface of the flexible insulating layer 16 is provided with a resistance-increasing pattern to increase the frictional resistance between the flexible insulating layer 16 and the dielectric barrier discharge structure 8. The surface of the flexible insulating layer 16 forms an extrusion depression under the extrusion action of the dielectric barrier discharge structure 8, thereby ensuring the pressure of the flexible insulating layer 16 on the dielectric barrier discharge structure 8 and ensuring that the friction force generated on the dielectric barrier discharge structure 8 when the transverse pressure plate 15 moves can effectively drive the dielectric barrier discharge structure 8 to rotate back and forth.

[0038] The reaction products are ejected outward by driving the dielectric barrier discharge structures 8 to rotate. However, when the dielectric barrier discharge structures 8 in the matrix dielectric barrier discharge plasma assembly 7 are densely packed, if the airflow passing through the discharge zones 9 is too dispersed, resulting in a weakened airflow, it is difficult to carry away the products ejected by the dielectric barrier discharge structures 8. In this case, the reaction products may be ejected onto another dielectric barrier discharge structure 8. Therefore, it is necessary to form a strong airflow within the collector 1 corresponding to each discharge zone 9 to concentrate the airflow through the discharge zone 9. In other words, an airflow guiding mechanism 17 is further provided within the collector 1. In this embodiment, two airflow guiding mechanisms 17 are provided within the collector 1, one located above and one below the matrix dielectric barrier discharge plasma assembly 7. The lower airflow guiding mechanism 17 is used to direct airflow into the discharge zones 9 of the matrix dielectric barrier discharge plasma assembly 7, while the upper airflow guiding mechanism 17 is used to direct airflow from the discharge zones 9 of the matrix dielectric barrier discharge plasma assembly 7 into the adsorption filter assembly 6. The airflow guiding mechanism 17 includes multiple airflow guiding assemblies 19, which are arranged one-to-one with the multiple discharge zones 9 of the matrix dielectric barrier discharge plasma assembly 7 and are used to guide airflow from below to above the multiple discharge zones 9. A guided airflow passing through the discharge zone 9 is formed between the upper and lower airflow guiding assemblies 19 corresponding to the same discharge zone 9, thereby concentrating the airflow between the discharge zones 9 and increasing the airflow intensity within the discharge zones 9.

[0039] The airflow guiding mechanism 17 includes a partition plate 18 and a plurality of airflow guiding components 19 installed on the partition plate 18. Each airflow guiding component 19 includes an inner conduit 20 and an outer fixed tube 21 that are nested inside and outside. The outer fixed tube 21 is fixed on the partition plate 18. The inner conduit 20 is rotatably installed in the outer fixed tube 21. The internal channel of the inner conduit 20 forms an airflow channel for the airflow to pass through. A plurality of spiral ridges 22 are circumferentially provided on the inner side wall of the inner conduit 20. When the airflow passes through the inner conduit 20, the spiral ridges 22 guide the airflow to rotate, forming a rotating upward airflow. Since the airflow not only rises but also rotates, the movement speed of the airflow itself can be increased, and the effect of the airflow carrying away the reaction products can be enhanced. At the same time, the passage time of the entire airflow in the discharge zone 9 can be extended, thereby improving the treatment effect.

[0040] In order to facilitate the installation of the inner catheter 20 in the outer fixed tube 21, the inner catheter 20 can be designed as a split type, that is, the inner catheter 20 is designed as an inner catheter 20 body and a hanging flange. During installation, the inner catheter 20 body passes through the internal channel of the outer fixed tube 21 from bottom to top, and then the hanging flange is connected to the top of the inner catheter 20 body by screws, so that the installation of the inner catheter 20 and the outer fixed tube 21 can be achieved.

[0041] The adsorption filter assembly 6 is used to filter and adsorb the gas processed by the matrix dielectric barrier discharge plasma assembly 7. The adsorption filter assembly 6 includes a mesh plate 23 and a filter box 24. The mesh plates 23 are arranged in two groups, and the two groups of mesh plates 23 are arranged in an upper and lower manner and fixedly installed in the collector 1. The filter boxes 24 are arranged in multiple groups arranged in a vertical interval. The multiple groups of filter boxes 24 are located in the area between the two groups of mesh plates 23. The filter boxes 24 are flat structures and are filled with activated carbon particles. The adsorption filter assembly 6 also includes a vibration frame 25 and a vibration driver. The multiple groups of filter boxes 24 are fixedly connected to the vibration frame 25. The vibration frame 25 is vertically slidably installed in the collector 1. A receiving tray 27 is provided below each filter box 24. The receiving tray 27 is fixedly installed in the collector 1. The vibration driver is used to drive the vibration frame 25 and the multiple groups of filter boxes 24 installed thereon to vibrate up and down.

[0042] The vibration driver includes a runner 26 rotatably installed in the collector 1, a convex plate 28 is fixedly connected to the vibration frame 25, the runner 26 is arranged below the convex plate 28, and a protrusion 29 is provided on the circumferential side wall of the runner 26. The runner 26 is driven to rotate by a motor 31, and an elastic member 30 is provided between the side of the convex plate 28 away from the runner 26 and the collector 1. The elastic member 30 can be a compression spring, and the elastic member 30 is used to provide a downward elastic force to the vibration frame 25.

[0043] When the wheel 26 rotates, causing the protrusion 29 to contact the raised plate 28, the vibration frame 25 and the multiple filter boxes 24 are lifted. When the protrusion 29 leaves the raised plate 28, the vibration frame 25 and the filter boxes 24 rapidly descend under the action of gravity and the elastic force of the elastic member 30. When the raised plate 28 contacts the wheel 26, the raised plate 28 immediately stops its upward and downward movement. Under the action of inertia, the water attached to the surface of the activated carbon particles is thrown downward and thrown into the receiving pan 27. This reciprocating movement causes the filter boxes 24 to vibrate, effectively preventing water accumulation on the surface of the activated carbon particles. The receiving pan 27 can be connected to a drain pipe. When the receiving pan 27 is full of water, it is discharged through the drain pipe, thereby preventing the accumulation of water on the surface of the activated carbon particles and affecting the adsorption efficiency of the activated carbon. The receiving pan 27 has multiple air holes for upward air flow. The air holes of the receiving pan 27 are surrounded by a ring that protrudes upward to prevent water from dripping downward from the high air holes.

[0044] During operation, driven by exhaust fan 5, gas enters collector 1 through gas hood 2 and suction pipe 3. Under the action of airflow guide mechanism 17, multiple airflow guide components 19 guide the rotating upward airflow to multiple discharge zones 9. Simultaneously, matrix dielectric barrier discharge plasma assembly 7 is activated. The discharge of dielectric barrier discharge structure 8 breaks the chemical bonds of organic volatile gases, generating stable and harmless small molecules such as carbon dioxide and water. These are then adsorbed and filtered by adsorption and filtration assembly 6 before being discharged through exhaust pipe 4. This effectively collects VOC gases from the cigarette factory workshop and treats them before discharge, greatly improving VOC gas treatment efficiency. During this process, the reciprocating rotation of each dielectric barrier discharge structure 8 is controlled by the rotation drive assembly. Firstly, the relative position of the surface of the dielectric barrier discharge structure 8 can be changed to prevent the surface of the dielectric barrier discharge structure 8 from forming a blind spot with the airflow and being unable to contact the airflow. Secondly, the discharge effect between two adjacent dielectric barrier discharge structures 8 can be improved. Thirdly, there is a stop process during the reciprocating rotation of the dielectric barrier discharge structure 8. When the dielectric barrier discharge structure 8 stops rotating, the reaction products on the surface of the dielectric barrier discharge structure 841 are thrown outward from the dielectric barrier discharge structure 8 under the action of centrifugal force and can be carried away by the airflow passing through the discharge area 9. This prevents the adhesion and accumulation of reaction products such as water in the domain of the matrix dielectric barrier discharge plasma assembly 74, and can effectively prevent the accumulation of reaction products such as water from affecting the breakdown voltage and discharge current of the dielectric barrier discharge structure 8, further improving the VOC gas treatment efficiency of the device.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tobacco VOC odor gas collection device, comprising a collector (1) and a gas collecting hood (2), wherein the gas collecting hood (2) is connected to the air inlet end at the bottom of the collector (1) through an air suction pipe (3), and an exhaust pipe (4) is arranged at the air outlet end at the top of the collector (1). An exhaust fan (5), an adsorption filter component (6) and a matrix dielectric barrier discharge plasma component (7) are arranged in sequence from top to bottom in the inner cavity of the collector (1), characterized in that: The matrix-type dielectric barrier discharge plasma component (7) comprises a plurality of dielectric barrier discharge structures (8), wherein the plurality of dielectric barrier discharge structures (8) are arranged in a matrix, and the area between adjacent rows of dielectric barrier discharge structures (8) forms a discharge area (9). The plurality of dielectric barrier discharge structures (8) in each row are mounted on the same group of support frames (11), and each dielectric barrier discharge structure (8) is rotatably mounted on the support frame (11). A rotation drive component is also arranged in the collector (1), and the rotation drive component is used to drive the plurality of dielectric barrier discharge structures (8) to rotate back and forth. When the rotation of the dielectric barrier discharge structure (8) stops, the reaction products on the surface of the dielectric barrier discharge structure (8) are thrown out to the outside of the dielectric barrier discharge structure (8) under the action of centrifugal force.

2. A tobacco VOC odor gas collection device as claimed in claim 1, characterized in that: The collector (1) is also provided with an airflow guiding mechanism (17), the airflow guiding mechanism (17) comprising a plurality of airflow guiding components (19), the plurality of airflow guiding components (19) being arranged in one-to-one correspondence with the plurality of discharge areas (9) of the matrix dielectric barrier discharge plasma component (7), and being used to guide the airflow from below the plurality of discharge areas (9) to above.

3. A tobacco VOC odor gas collection device as claimed in claim 2, characterized in that: Two airflow guiding mechanisms (17) are provided in the collector (1), and the two airflow guiding mechanisms (17) are respectively located above and below the matrix-type dielectric barrier discharge plasma component (7).

4. A tobacco VOC odor gas collection device as claimed in claim 2 or 3, characterized in that: The airflow guiding mechanism (17) comprises a partition plate (18) and a plurality of airflow guiding components (19) mounted on the partition plate (18), each airflow guiding component (19) comprising an inner conduit (20) and an outer fixed tube (21) which are sleeved together, the outer fixed tube (21) being fixed on the partition plate (18), the inner conduit (20) being rotatably mounted in the outer fixed tube (21), the inner passage of the inner conduit (20) forming an airflow passage for airflow to pass through, a plurality of spiral convex strips (22) being circumferentially arranged on the inner side wall of the inner conduit (20), and when the airflow passes through the inner conduit (20), the spiral convex strips (22) guide the airflow to rotate.

5. A tobacco VOC odor gas collection device as claimed in claim 1, characterized in that: The rotation drive assembly comprises a linear drive (13), a connecting frame (14) and a plurality of transverse pressure plates (15); the plurality of transverse pressure plates (15) are located above a plurality of rows of dielectric barrier discharge structures (8) in a one-to-one correspondence, and the bottom surface of the transverse pressure plate (15) is pressed and fitted tightly against the upper surface of the corresponding row of dielectric barrier discharge structures (8); the plurality of transverse pressure plates (15) are connected together via the connecting frame (14); the output end of the linear drive (13) is fixedly connected to the connecting frame (14); the linear drive (13) is used to drive the plurality of transverse pressure plates (15) to reciprocate above the plurality of rows of dielectric barrier discharge structures (8), and the friction between the transverse pressure plates (15) and the rows of dielectric barrier discharge structures (8) drives the rows of dielectric barrier discharge structures (8) to reciprocate.

6. A tobacco VOC odor gas collection device as claimed in claim 5, characterized in that: A flexible insulating layer (16) is provided at the bottom of the transverse pressing plate (15), the transverse pressing plate (15) is pressed and tightly fitted with the upper surface of the dielectric barrier discharge structure (8) through the flexible insulating layer (16), a resistance-increasing pattern is provided on the surface of the flexible insulating layer (16), and an extrusion depression area is formed on the surface of the flexible insulating layer (16) under the extrusion action of the dielectric barrier discharge structure (8).

7. A tobacco VOC odor gas collection device as claimed in claim 1, characterized in that: The adsorption filter assembly (6) comprises a mesh plate (23) and a filter mesh box (24); the mesh plate (23) is arranged in two groups, the two groups of mesh plates (23) are arranged in an up-and-down manner and are fixedly installed in the collector (1); the filter mesh boxes (24) are arranged in a plurality of groups arranged in a vertically spaced manner, the plurality of groups of filter mesh boxes (24) are located in the area between the two groups of mesh plates (23); the filter mesh boxes (24) are of a flat structure, and the interior of the filter mesh boxes (24) is filled with activated carbon particles.

8. A tobacco VOC odor gas collection device as claimed in claim 7, characterized in that: The adsorption filter assembly (6) further comprises a vibration frame (25) and a vibration driver, wherein a plurality of groups of filter screen boxes (24) are fixedly connected to the vibration frame (25), the vibration frame (25) is vertically slidably mounted in the collector (1), a receiving plate (27) is provided below each filter screen box (24), the receiving plate (27) is fixedly mounted in the collector (1), and the vibration driver is used to drive the vibration frame (25) and the plurality of groups of filter screen boxes (24) mounted thereon to vibrate up and down.

9. A tobacco VOC odor gas collection device as claimed in claim 8, characterized in that: The vibration driver comprises a rotating wheel (26) rotatably mounted in the collector (1); a convex plate (28) is fixedly connected to the vibration frame (25); the rotating wheel (26) is arranged below the convex plate (28); a protrusion (29) is arranged on the circumferential side wall of the rotating wheel (26); the rotating wheel (26) is driven to rotate by a motor (31); an elastic member (30) is arranged between a side of the convex plate (28) away from the rotating wheel (26) and the collector (1); the elastic member (30) is used to provide a downward elastic force to the vibration frame (25).

10. The tobacco VOC odor gas collection device according to claim 1, characterized in that: The dielectric barrier discharge structure (8) is provided with shaft heads (12) at both ends of the axial direction, each group of support frames (11) comprises two support frames (11), the shaft heads (12) at both ends of the dielectric barrier discharge structure (8) are rotatably mounted on the two support frames (11) of each group of support frames (11), the support frames (11) are provided with arc-shaped mounting grooves, and the shaft heads (12) at the ends of the dielectric barrier discharge structure (8) are rotatably supported in the arc-shaped mounting grooves of the support frames (11).

Images