Packaging box printing waste gas treatment device

Abstract

The invention belongs to the technical field of waste gas treatment, and particularly provides a packaging box printing waste gas treatment device which comprises a self-rotating filter cylinder, an impeller cylinder and a pulse dust collector, the impeller cylinder is fixedly arranged on one side wall of the self-rotating filter cylinder, the pulse dust collector is fixedly arranged on the side wall of the self-rotating filter cylinder, and the impeller cylinder and the self-rotating filter cylinder are arranged in a penetrating mode. And the pulse dust collector is communicated with the self-rotating filter cartridge. Rotary dynamic filtering dust removal and pulse dust collection of printing waste gas are achieved in an airflow driving mode, the dust collection cavities and the exhaust cavities which are annularly arranged at intervals in an array mode are dynamically communicated, each V-shaped filter plate can fully play a filtering function, the included angle between each V-shaped filter plate and the airflow direction continuously changes, impurities can be filtered, and the dust removal effect is good. Impurities cannot be accumulated due to a directional airflow effect, and the problems that equipment is easily blocked and the adsorption effect is gradually worsened due to a static adsorption treatment mode in the prior art are effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste gas treatment, and specifically relates to a packaging box printing waste gas treatment device. Background Art

[0002] During the printing process of packaging boxes, a large amount of waste gas containing VOCs, ink particles, paper powder and pungent odors will be generated. The existing technology for treating such waste gas generally belongs to unidirectional static adsorption treatment, that is, the adsorption filter device of the equipment is static, and the flow direction of the waste gas at the adsorption filter device is unidirectional. This treatment method easily saturates the adsorption filter device, and the effect is acceptable in the early stage. However, after long-term use, the ink particles and paper powder will gradually clog the adsorption filter device, and the adsorption filtration effect will be significantly deteriorated.

[0003] In addition, when the adsorption filter device of the prior art is in use, the adsorption filter device close to the exhaust gas intake end will be saturated first, while the adsorption filter device far from the exhaust gas intake end is difficult to fully exert its filtering effect due to the obstruction of the pre-adsorption filter device. Summary of the Invention

[0004] In response to the above technical problems, the present invention provides a packaging box printing waste gas treatment device, which adopts an airflow-driven method to realize rotary dynamic filtration and dust removal and pulse dust collection of printing waste gas. The dust collecting chamber and the exhaust chamber arranged in a circular array are dynamically connected, so that the printing waste gas can smoothly enter each dust collecting chamber without directly entering the exhaust chamber, so that each V-shaped filter plate can fully exert its filtering function, and the angle between the V-shaped filter plate and the direction of the airflow continuously changes, which can filter impurities without causing impurity accumulation due to the action of directional airflow, effectively solving the problem that the static adsorption treatment method of the prior art easily causes equipment blockage and the adsorption effect gradually deteriorates.

[0005] The technical solution adopted by the present invention is as follows: This solution provides a packaging box printing waste gas treatment device, including a spin filter cartridge, an impeller cartridge, a suction bar and a pulse dust collector. The impeller cartridge is fixed to one side wall of the spin filter cartridge, a slide rail is fixed to the lower wall of the spin filter cartridge, the suction bar is slidably connected to the lower wall of the slide rail, the pulse dust collector is symmetrically distributed and fixed to the side wall of the spin filter cartridge, the suction bar and the impeller cartridge are connected, the impeller cartridge and the spin filter cartridge are connected, and the pulse dust collector and the spin filter cartridge are connected.

[0006] In this scheme, a cyclone impeller is provided for rotation inside the impeller cylinder, and the circumferential outer wall of the spin-on filter cylinder is composed of an inner ring and outer rings symmetrically distributed and fixedly connected to the two side walls of the inner ring. A connecting shaft is provided for rotation through the axis of the spin-on filter cylinder, one end of the connecting shaft passes through the impeller cylinder and is coaxially fixedly connected to the cyclone impeller, and a filter wheel is provided for rotation inside the spin-on filter cylinder, and the filter wheel and the impeller cylinder are arranged for transmission. Specifically, the cyclone impeller and the filter wheel are coaxially fixedly connected through a connecting shaft, and an incomplete gear is coaxially fixedly connected to the other end of the connecting shaft.

[0007] The filter wheel includes an inner wheel, an outer ring and a V-shaped filter plate. The inner wheel is coaxially fixedly connected to the connecting shaft, and the outer ring is sleeved on the outside of the inner wheel. A fixing rod is fixedly connected in an annular array between the circumferential inner wall of the outer ring and the circumferential outer wall of the inner wheel. The V-shaped filter plates are distributed in an annular array on the circumferential outer wall of the inner wheel. The V-shaped filter plate is detachable. The V-shaped filter plate is fixedly connected to form a V-shaped structure by two filter plates. The ends of the two filter plates of the V-shaped filter plate are in contact with the circumferential inner wall of the outer ring.

[0008] The outer ring consists of an intake ring and exhaust rings symmetrically distributed and fixedly connected on both sides of the intake ring. The outer wall of the intake ring is rotationally fitted with the inner wall of the inner ring, and the outer wall of the exhaust ring is rotationally fitted with the inner wall of the outer ring. An annular array of intake grooves is provided on the intake ring, and the intake grooves correspond one-to-one to the V-shaped filter plates. The intake grooves are located between the two filter plates of the V-shaped filter plate. An annular array of exhaust grooves is provided on the exhaust ring, and the exhaust grooves are staggered with the intake grooves, and the exhaust grooves are located between two adjacent V-shaped filter plates.

[0009] As a further optimization of this solution, a fan is fixedly installed on the slide rail, an air intake hose is connected between the air inlet end of the fan and the upper wall of the suction bar, a bent pipe A is connected between the air outlet end of the fan and the outer circumferential wall of the impeller cylinder, a bent pipe B is connected between the outer circumferential wall of the impeller cylinder and the upper wall of the inner ring, and an exhaust pipe is fixedly connected to the lower wall of the outer ring.

[0010] Furthermore, the lower wall of the inner ring is symmetrically distributed and fixedly connected with a hollow support plate. The pulse dust collector includes a filter box and a dust collecting barrel. The filter box is fixedly connected to the end of the hollow support plate. The filter box and the inside of the inner ring are connected through the hollow support plate. The dust collecting barrel is detachably spirally connected to the filter box. A filter cloth is fixedly provided on the inner wall of the filter box. A return air duct is connected between the upper wall of the filter box and the upper wall of the inner ring. Air ducts are fixed on the outer walls on both sides of the inner ring respectively. The air ducts are arranged in the middle of the return air duct. The upper wall of the filter box is connected to the air inlet of the air duct through the lower half of the return air duct, and the air outlet of the air duct is connected to the upper wall of the inner ring through the upper half of the return air duct. A fan blade is provided for rotation inside the air duct, and a pulley B is coaxially fixed on the fan blade. The pulley B is located outside the air duct.

[0011] A wheel frame is fixedly provided on the outer side wall of the spin-on filter cartridge, and a linkage gear and a pulley A are rotatably provided on the wheel frame. The pulley A is coaxially and fixedly connected to the linkage gear. The linkage gear and the incomplete gear are correspondingly arranged and intermittently meshed. When the teeth of the incomplete gear rotate to the linkage gear, the incomplete gear meshes with the linkage gear.

[0012] There are two pulleys A, which are respectively arranged corresponding to the pulleys B on the two wind tubes. A belt is wound between the pulleys A and B. The connecting shaft and the fan blades in the wind tube are intermittently connected through incomplete gears, linkage gears, pulleys A, belts, and pulleys B.

[0013] The beneficial effects achieved by the present invention are as follows: (1) The present invention uses an airflow-driven method to achieve rotary dynamic filtration and dust removal of printing waste gas. The filter wheel in the spin filter cartridge uses a V-shaped filter plate to form a dust collecting chamber and an exhaust chamber arranged in a ring-shaped array. By rotating with the inner ring and the outer ring of the circumferential wall of the spin filter cartridge, dynamic conduction of the dust collecting chamber and the exhaust chamber is achieved. The air inlet end can only be connected to the dust collecting chamber, and the exhaust end can only be connected to the exhaust chamber, so that the printing waste gas can smoothly enter each dust collecting chamber and will not directly enter the exhaust chamber. Only the gas that has been filtered multiple times can enter the exhaust end and be discharged, so that each V-shaped filter plate can fully exert its filtering function; (2) When the gas passes through each V-shaped filter plate, the angle between the V-shaped filter plate and the gas direction changes continuously as the filter wheel rotates. The gas will produce airflow in all directions on the filter plate of the V-shaped filter plate, thereby effectively preventing impurities in the printing exhaust gas from being continuously adsorbed on the filter plate. The V-shaped filter plate can filter impurities without causing impurities to accumulate due to directional airflow, which is convenient for subsequent pulse dust collection operations; (3) Ink particles, paper scraps, flying catkins and other impurities in the printing waste gas will gradually accumulate in the dust collecting chamber formed by the V-shaped filter plate. When the V-shaped filter plate moves to the hollow support plate, the impurities will fall into the hollow support plate. When the fan blades rotate rapidly, the high-speed airflow generated can assist the impurities to enter the filter box. The pulse airflow generated in the filter box can effectively improve the impurity absorption efficiency. The filter cloth blocks and filters the impurities carried by the pulse airflow. During the interruption of the pulse airflow, the impurities will fall into the dust collecting tube under the action of gravity, thereby dynamically cleaning the impurities in the spin filter tube to prevent continuous filtration from causing impurities to accumulate and block the V-shaped filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a packaging box printing waste gas treatment device proposed by the present invention Figure 1 ; Figure 2 This is a schematic diagram of the structure of a packaging box printing waste gas treatment device proposed by the present invention Figure 2 ; Figure 3 This is a half-section structural diagram of a packaging box printing waste gas treatment device proposed by the present invention; Figure 4 Schematic diagram of the structure of the connecting shaft, filter wheel and cyclone impeller in the present invention; Figure 5 for Figure 3 A partial enlarged view of the M part; Figure 6 for Figure 3 A local enlarged view of part N in FIG; Figure 7 This is a main cross-sectional view of a packaging box printing waste gas treatment device proposed by the present invention along the vertical plane where the middle part of the inner ring is located; Figure 8 for Figure 1 A partial enlarged view of part P in FIG.

[0015] Among them, 1. Spin filter cartridge, 11. Slide rail, 111. Fan, 12. Inner ring, 121. Air inlet end, 122. Hollow support plate, 123. Air duct, 124. Fan blade, 125. Pulley B, 13. Outer ring, 131. Exhaust end, 132. Exhaust duct, 14. Coupling, 141. Incomplete gear, 15. Filter wheel, 151. Inner wheel, 152. Outer ring, 153. V-type filter plate, 1531. Dust collection chamber, 1532. Exhaust Chamber, 154, fixing rod, 155, filter, 156, air intake ring, 157, exhaust ring, 158, air intake groove, 159, exhaust groove, 16, wheel frame, 161, linkage gear, 162, pulley A, 17, belt, 2, impeller cylinder, 21, cyclone impeller, 22, elbow A, 23, elbow B, 3, suction strip, 31, air intake hose, 4, pulse dust collector, 41, filter box, 411, filter cloth, 412, return air duct, 42, dust collecting cylinder.

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0017] Example 1: Please refer to Figures 1-8, this embodiment provides a packaging box printing waste gas treatment device, including a spin filter cartridge 1, an impeller cartridge 2, a suction strip 3 and a pulse dust collector 4. The impeller cartridge 2 is fixed to one side wall of the spin filter cartridge 1, and a slide rail 11 is fixed to the lower wall of the spin filter cartridge 1. The suction strip 3 is slidably connected to the lower wall of the slide rail 11. The pulse dust collector 4 is symmetrically distributed and fixed to the side wall of the spin filter cartridge 1. The suction strip 3 and the impeller cartridge 2 are connected through, the impeller cartridge 2 and the spin filter cartridge 1 are connected through, the pulse dust collector 4 and the spin filter cartridge 1 are connected through, and the circumferential outer wall of the spin filter cartridge 1 is composed of an inner ring 12 and an outer ring 13 symmetrically distributed and fixedly connected to the two side walls of the inner ring 12.

[0018] A fan 111 is fixedly provided on the slide rail 11, and an air intake hose 31 is connected between the air inlet end of the fan 111 and the upper wall of the air suction strip 3, and a bent pipe A22 is connected between the air outlet end of the fan 111 and the circumferential outer wall of the impeller cylinder 2. An air inlet terminal 121 is fixedly provided on the upper wall of the inner ring 12, and a bent pipe B23 is connected between the circumferential outer wall of the impeller cylinder 2 and the upper wall of the air inlet terminal 121. An exhaust terminal 131 is fixedly connected to the lower wall of the outer ring 13, and an exhaust pipe 132 is connected to the lower end of the exhaust terminal 131.

[0019] A cyclone impeller 21 is provided for rotation inside the impeller cylinder 2, a connecting shaft 14 is provided for rotation through the axis of the spin-on filter cylinder 1, one end of the connecting shaft 14 passes through the impeller cylinder 2 and is coaxially fixedly connected to the cyclone impeller 21, a filter wheel 15 is provided for rotation inside the spin-on filter cylinder 1, and the cyclone impeller 21 and the filter wheel 15 are coaxially fixedly connected through the connecting shaft 14.

[0020] The filter wheel 15 includes an inner wheel 151, an outer ring 152 and a V-shaped filter plate 153. The inner wheel 151 is coaxially fixedly connected to the connecting shaft 14, and the outer ring 152 is sleeved on the outside of the inner wheel 151. A fixing rod 154 is fixedly connected in an annular array between the circumferential inner wall of the outer ring 152 and the circumferential outer wall of the inner wheel 151. The V-shaped filter plates 153 are distributed in an annular array on the circumferential outer wall of the inner wheel 151. The V-shaped filter plates 153 are detachable. The V-shaped filter plate 153 is fixedly connected to form a V-shaped structure by two filter discs 155. The ends of the two filter discs 155 of the V-shaped filter plate 153 are in contact with the circumferential inner wall of the outer ring 152. A dust collecting chamber 1531 is formed between the two filter discs 155 of the V-shaped filter plate 153 and the circumferential inner wall of the outer ring 152. An exhaust chamber 1532 is formed between the two adjacent V-shaped filter plates 153 and the circumferential inner wall of the outer ring 152.

[0021] The outer ring 152 consists of an air intake ring 156 and an exhaust ring 157 symmetrically distributed and fixedly connected to both sides of the air intake ring 156. The outer wall of the air intake ring 156 is rotationally fitted with the inner wall of the inner ring 12, and the outer wall of the exhaust ring 157 is rotationally fitted with the inner wall of the outer ring 13. An annular array of air intake grooves 158 is opened on the air intake ring 156. The air intake grooves 158 correspond one-to-one to the V-shaped filter plates 153. The air intake grooves 158 are located between the two filter plates 155 of the V-shaped filter plate 153. An annular array of exhaust grooves 159 is opened on the exhaust ring 157. The exhaust grooves 159 are staggered with the air intake grooves 158. The exhaust grooves 159 are located between two adjacent V-shaped filter plates 153.

[0022] The lower wall of the inner ring 12 is symmetrically distributed and fixedly connected with a hollow support plate 122. The pulse dust collector 4 includes a filter box 41 and a dust collecting barrel 42. The filter box 41 is fixedly connected to the end of the hollow support plate 122. The filter box 41 and the interior of the inner ring 12 are connected through the hollow support plate 122. The dust collecting barrel 42 is detachably spirally connected to the filter box 41. The inner wall of the filter box 41 is fixedly provided with a filter cloth 411. The upper wall of the filter box 41 is connected to the upper wall of the air inlet end 121 through a return air duct 412. The outer walls on both sides of the inner ring 12 are respectively fixed with air ducts 123, and the air ducts 123 are arranged through the middle of the return air duct 412. The upper wall of the filter box 41 is connected to the air inlet of the air duct 123 through the lower half of the return air duct 412, and the air outlet of the air duct 123 is connected to the upper wall of the air inlet end 121 through the upper half of the return air duct 412. A fan blade 124 is rotated inside the air duct 123, and a pulley B125 is coaxially fixed on the fan blade 124, and the pulley B125 is located outside the air duct 123.

[0023] The other end of the connecting shaft 14 is coaxially fixedly connected with an incomplete gear 141, and a wheel frame 16 is fixedly provided on the outer side wall of the spin-on filter cartridge 1. A linkage gear 161 and a pulley A162 are rotatably provided on the wheel frame 16. The pulley A162 is coaxially fixedly connected to the linkage gear 161. The linkage gear 161 is corresponding to the incomplete gear 141 and intermittently meshed with it. When the teeth of the incomplete gear 141 rotate to the linkage gear 161, the incomplete gear 141 meshes with the linkage gear 161. Two pulleys A162 are provided, and the two pulleys A162 are respectively corresponding to the pulleys B125 on the two wind tubes 123. A belt 17 is wound around the pulley A162 and the pulley B125. The connecting shaft 14 and the fan blades 124 in the wind tube 123 are intermittently transmitted through the incomplete gear 141, the linkage gear 161, the pulley A162, the belt 17, and the pulley B125.

[0024] In order to facilitate installation, mounting brackets are symmetrically distributed and fixed on the outer side wall of the outer ring 13.

[0025] The specific usage process of this embodiment is as follows: first, with the help of a mounting frame, a packaging box printing waste gas treatment device in this embodiment is installed above the packaging box printing assembly line, and the position of the suction bar 3 on the slide rail 11 is adjusted so that the suction bar 3 is aligned with the place where the printing waste gas is generated, and the fan 111 is started. The fan 111 generates an airflow, so that the printing waste gas enters the suction bar 3 and enters the impeller cylinder 2 through the air intake hose 31 and the elbow A22. The rapid flow of the printing waste gas causes the cyclone impeller 21 to rotate rapidly, thereby driving the connecting shaft 14, the filter wheel 15 and the incomplete gear 141 to rotate.

[0026] When the filter wheel 15 rotates, the outer ring 152 and the V-shaped filter plate 153 rotate with the connecting shaft 14 as the rotating axis, the air intake ring 156 rotates in close contact with the inner wall of the inner ring 12, and the exhaust ring 157 rotates in close contact with the inner wall of the outer ring 13. When the air intake groove 158 on the air intake ring 156 moves to the air inlet end 121 (the top area of the spin-on filter cartridge 1), the air inlet end 121 and the V-shaped filter plate 153 corresponding to the air intake groove 158 form a dust collecting chamber 1531 through the air intake groove 158, and the printing exhaust gas can enter the dust collecting chamber 1531 through the air intake groove 158. At this time, the exhaust ring 157 at the air inlet end 121 is in close contact with the outer ring 13, and the exhaust groove 159 is in a closed state. The printing exhaust gas will not directly enter the exhaust chamber 1532.

[0027] The exhaust groove 159 that moves to the exhaust end 131 (the bottom area of the spin-on filter cartridge 1) is no longer blocked by the outer ring 13, and the exhaust chamber 1532 here is connected to the exhaust end 131 through the exhaust groove 159, and the air inlet groove 158 here connects the dust collecting chamber 1531 and the hollow support plate 122. The air inlet grooves 158 and the exhaust grooves 159 that move to the two side areas of the spin-on filter cartridge 1 are blocked by the inner ring 12 and the outer ring 13.

[0028] Driven by the airflow of the fan 111, the printing exhaust gas entering the dust collecting chamber 1531 will pass through the filter discs 155 on each V-shaped filter plate 153, and will be filtered multiple times by multiple filter discs 155, and finally form two types of branch airflows. The first type of branch airflow reaches the exhaust chamber 1532 at the exhaust terminal 131, is discharged from the exhaust slot 159, and is discharged from the exhaust terminal 131 and the exhaust pipe 132. When the gas shuttles through each V-shaped filter plate 153, as the filter wheel 15 rotates, the gas will produce airflow in all directions on the filter discs 155 of the V-shaped filter plate 153, thereby effectively preventing impurities in the printing exhaust gas from being continuously adsorbed on the filter discs 155. The V-shaped filter plate 153 can filter impurities without causing impurity accumulation due to directional airflow, which is convenient for subsequent pulse dust collection operations.

[0029] The second type of branch airflow reaches the dust collecting chamber 1531 at the exhaust end 131, and enters the hollow support plate 122 from the air inlet slot 158. When the teeth of the incomplete gear 141 do not contact the linkage gear 161, the fan blade 124 is in a stationary state, the second type of branch airflow has no driving force, and the airflow is not obvious. When the teeth of the incomplete gear 141 contact the linkage gear 161, the incomplete gear 141 engages with the linkage gear 161, and causes the linkage gear 161 to drive the pulley A162 to rotate rapidly, and the pulley A162 drives the pulley B125 to rotate rapidly through the belt 17, thereby causing the fan blade 124 to rotate rapidly, and the fan blade 124 generates an airflow, thereby causing the second type of branch airflow to flow rapidly, and enter the filter box 41 through the hollow support plate 122, and then flow back to the dust collecting chamber 1531 at the air inlet end 121 through the return air duct 412 and the air inlet end 121.

[0030] The above-mentioned second type of branch airflow has the following functions: ink particles, paper scraps, flying catkins and other impurities in the printing waste gas will gradually accumulate in the dust collecting chamber 1531 formed by the V-shaped filter plate 153. When the V-shaped filter plate 153 moves to the hollow support plate 122, the impurities will fall into the hollow support plate 122. When the fan blades 124 rotate rapidly, the high-speed airflow generated can assist the impurities to enter the filter box 41. The intermittent meshing action of the incomplete gear 141 and the linkage gear 161 causes the fan blades 124 to form a pulsed operation, thereby generating a pulsed airflow at the filter box 41, which can effectively improve the impurity absorption efficiency. The filter cloth 411 blocks and filters the impurities entrained by the pulsed airflow. During the interruption of the pulsed airflow, the impurities will fall into the dust collecting tube 42 under the action of gravity, thereby dynamically cleaning the impurities in the spin filter tube 1 to prevent continuous filtration from causing impurities to accumulate and block the V-shaped filter plate 153.

[0031] The operator regularly unscrews the dust collecting barrel 42 to remove impurities inside the dust collecting barrel 42 so as to maintain the dust removal efficiency of the device.

[0032] The present invention and its embodiments are described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto.

Claims

1. A packaging box printing waste gas treatment device, characterized by: The invention comprises a spin filter cartridge (1), an impeller cartridge (2) and a pulse dust collector (4), wherein the impeller cartridge (2) is fixedly arranged on a side wall of the spin filter cartridge (1), the pulse dust collector (4) is fixedly arranged on the side wall of the spin filter cartridge (1), the impeller cartridge (2) and the spin filter cartridge (1) are interlinked, the pulse dust collector (4) and the spin filter cartridge (1) are interlinked, the circumferential outer wall of the spin filter cartridge (1) is composed of an inner ring (12) and outer rings (13) symmetrically distributed and fixedly connected to both sides of the inner ring (12), and a filter wheel (15) is provided in the spin filter cartridge (1) for rotation.

2. The packaging box printing waste gas treatment device according to claim 1, characterized in that: A connecting shaft (14) is provided at the axis of the spin filter cartridge (1) for rotation. The filter wheel (15) and the impeller cartridge (2) are driven by the connecting shaft (14). The filter wheel (15) comprises an inner wheel (151), an outer ring (152) and a V-shaped filter plate (153). The inner wheel (151) is coaxially fixedly connected to the connecting shaft (14). The outer ring (152) is fixedly arranged outside the inner wheel (151). The V-shaped filter plates (153) are distributed in an annular array on the circumferential outer wall of the inner wheel (151). The ends of the V-shaped filter plates (153) are in contact with the circumferential inner wall of the outer ring (152).

3. The packaging box printing waste gas treatment device according to claim 2, characterized in that: The outer ring (152) is composed of an air intake ring (156) and an exhaust ring (157) symmetrically distributed and fixedly connected to both sides of the air intake ring (156). The outer circumferential wall of the air intake ring (156) is rotationally fitted with the inner circumferential wall of the inner ring (12). The outer circumferential wall of the exhaust ring (157) is rotationally fitted with the inner circumferential wall of the outer ring (13). An air intake groove (158) is provided in an annular array on the air intake ring (156). The air intake groove (158) corresponds to the V-shaped filter plate (153) one by one. An exhaust groove (159) is provided in an annular array on the exhaust ring (157). The exhaust groove (159) and the air intake groove (158) are staggered. The exhaust groove (159) is located between two adjacent V-shaped filter plates (153).

4. The packaging box printing waste gas treatment device according to claim 1, characterized in that: The lower wall of the inner ring (12) is fixedly connected to a hollow support plate (122). The pulse dust collector (4) includes a filter box (41) and a dust collecting cylinder (42). The filter box (41) is fixedly connected to the end of the hollow support plate (122). The dust collecting cylinder (42) is connected to the filter box (41). The inner wall of the filter box (41) is provided with a filter cloth (411). The upper wall of the filter box (41) and the upper wall of the inner ring (12) are connected to a return air duct (412).

5. The packaging box printing waste gas treatment device according to claim 4, characterized in that: An air duct (123) is fixedly provided on the outer wall of the inner ring (12), and the air duct (123) is arranged through the middle of the return air duct (412).

6. The packaging box printing waste gas treatment device according to claim 5, characterized in that: The connecting shaft (14) and the air duct (123) are intermittently driven.

7. The packaging box printing waste gas treatment device according to claim 1, characterized in that: A slide rail (11) is fixedly provided on the lower wall of the spin filter cylinder (1), a fan (111) is fixedly provided on the slide rail (11), and an air outlet end of the fan (111) is connected to the circumferential outer wall of the impeller cylinder (2).

8. The packaging box printing waste gas treatment device according to claim 1, characterized in that: An exhaust pipe (132) is provided through the lower wall of the outer ring (13).

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