Paint spraying waste gas purification equipment for wood processing

Abstract

The invention discloses paint spraying waste gas purification equipment for wood processing, the paint spraying waste gas purification equipment comprises an absorption device and a purification device, the absorption device comprises an absorption pipe and an absorption fan, and the absorption pipe is communicated with a paint spraying room; the purification device comprises a waste gas purification box; a waste gas primary purification mechanism connected with the absorption pipe is arranged at the front end part in the waste gas purification box; a dry filter is arranged on one side of the waste gas primary purification mechanism, a mounting plate is arranged on one side of the dry filter, and a revolving door structure purification assembly for purifying waste gas by utilizing activated carbon and ultraviolet irradiation is mounted on the mounting plate; a first purification space and a second purification space are defined by the rotatable purification box and the mounting plate, so that paint spraying waste gas is irradiated by ultraviolet rays and filtered and purified by activated carbon when passing through the two purification spaces, an arc-surface reflector is mounted on the inner side surface of an arc-shaped plate, the density of ultraviolet light beams can be increased, and the purification effect is improved. The light energy in unit area is higher, and the waste gas purification effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification, in particular to a paint spraying waste gas purification device for wood processing. Background Art

[0002] A certain amount of waste gas will be generated during the painting process on the wood surface, which mainly comes from the volatile organic compounds (VOCs) and solvents in the paint. During the painting process, the paint is atomized into fine particles by the spray gun and attached to the wood surface. At the same time, part of the paint will evaporate into the air in gaseous form, forming waste gas. There will also be impurities such as sawdust particles in these waste gases. The waste gas has certain hazards to the environment and human health, so it needs to be purified by waste gas purification equipment before being discharged.

[0003] When purifying the waste gas generated during the wood painting process, most of the time, an activated carbon filter is used to purify the waste gas generated during the painting process. However, particulate impurities such as sawdust will be generated during the wood painting process, which will block the gaps in the activated carbon filter layer, resulting in increased resistance to the flow of waste gas and reduced filtration efficiency. In addition, waste gas generally passes through the activated carbon filter layer in one direction, which easily causes the side of the activated carbon absorption layer directly facing the flow direction of the paint waste gas to contact the paint waste gas first, and adsorb more waste gas impurities, while the other side adsorbs fewer waste gas impurities, resulting in insufficient utilization of activated carbon in different parts, affecting the purification efficiency of the paint waste gas. In addition, ultraviolet irradiation is also used to purify the waste gas during purification, and the intensity of ultraviolet irradiation also affects the purification effect of the waste gas.

[0004] A paint spraying waste gas purification device is disclosed in the Chinese invention patent CN117427447A, including a purification box, with air inlets and discharge ports respectively provided on both sides of the purification box; an air inlet is connected to the air inlet, and a bending portion is provided in the middle section of the air inlet, the bending portion is V-shaped and the opening is arranged upward; a filter layer is vertically provided on one side of the purification box near the air inlet, a plurality of partitions are vertically provided in the purification box, an air supply opening is provided on one side of the partition, and a plurality of lamps are installed between the partitions; a cleaning mechanism is also provided in the purification box corresponding to the lamps; the invention removes particulate paint and organic pollutants in the paint spraying waste gas, and has good self-cleaning ability; however, when ultraviolet lamps are used to irradiate and purify the waste gas, a large number of ultraviolet lamps are used, although they can generate a large amount of light energy, but while purifying the waste gas, a large amount of energy resources are wasted, which lacks practicality nowadays. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the existing waste gas purification equipment in the process of wood painting in the above-mentioned background technology, and to provide a waste gas purification equipment for wood processing.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: a paint spraying waste gas purification device for wood processing, comprising an absorption device and a purification device, the absorption device comprising an absorption pipe and an absorption fan, the absorption pipe is communicated with the paint spraying room; the purification device comprises an exhaust gas purification box, the front end portion of the exhaust gas purification box is provided with an exhaust gas primary purification mechanism connected to the absorption pipe, the exhaust gas primary purification mechanism collects large particle pollutants impacting thereon through blocking members arranged at intervals and staggered; a dry filter for filtering paint mist and impurities in the exhaust gas is provided on one side of the exhaust gas primary purification mechanism, a mounting plate is provided on one side of the dry filter, and a revolving door structure purification component for purifying the exhaust gas by using activated carbon and ultraviolet irradiation is installed on the mounting plate.

[0007] Furthermore, the exhaust gas preliminary purification mechanism includes an outer cylinder connected to the absorption tube, and an inner cylinder is arranged inside the outer cylinder; the outer cylinder and the inner cylinder are both conical cylinders, and the diameter of the head of the two near the absorption tube is smaller than the diameter of the tail; the head of the inner cylinder is closed, and the tail is fastened to the outer cylinder by fasteners; a plurality of first annular blocking plates are arranged on the inner wall of the outer cylinder, and the inner diameter of the first annular blocking plates is larger than the diameter of the cross-section of the inner cylinder at the position where the first annular blocking plates are located; a plurality of second annular blocking plates are arranged on the outer wall of the inner cylinder, and the outer diameter of the second annular blocking plates is smaller than the diameter of the cross-section of the outer cylinder at the position where the second annular blocking plates are located; the first annular blocking plates and the second annular blocking plates are arranged alternately at intervals, and the first and second annular blocking plates are the frontmost annular blocking plates.

[0008] Furthermore, two first annular blocking sheets are arranged at intervals on the inner wall of the outer cylinder, and two second annular blocking sheets are arranged on the outer wall of the inner cylinder at intervals and alternately with the first annular blocking sheets; the first annular blocking sheet and the second annular blocking sheet are both conical ring-shaped, and the cone angle directions of the two are the same as the cone angle directions of the outer cylinder and the inner cylinder; the second annular blocking sheet is made of silicone.

[0009] Furthermore, the mounting plate includes a semicircular arc plate and side plates located at both ends of the arc plate; the arc plate is further divided into a first arc plate and a second arc plate, and an air inlet is opened between the first arc plate and the second arc plate; the inner sides of the first arc plate and the second arc plate are both fitted with arc reflectors installed on the inner wall of the arc; and a number of guide plates are installed at the air inlet.

[0010] Furthermore, the revolving door structure purification component includes a rotating column rotatably mounted on the side panel through a bearing, six purification boxes are mounted at equal angles on the outer wall of the rotating column, the interior of the purification box is filled with activated carbon, an ultraviolet lamp is mounted on the outer wall of the rotating column between two adjacent purification boxes, a driving motor is mounted on the top surface of the purification box, and the output end of the driving motor is connected to the top end of the rotating column; the rotating column drives the purification box to rotate under the drive of the driving motor, and the two purification boxes and the air inlet duct together form a first purification space, and the exhaust gas is irradiated by ultraviolet rays and filtered and purified by activated carbon when passing through the first purification space; at the same time, the two purification boxes and the first arc plate and the second arc plate form a second evolution space, and the exhaust gas is irradiated by ultraviolet rays and filtered and purified by activated carbon when passing through the second evolution space, and due to the setting of the arc reflector, the light energy per unit area in the second purification space is higher.

[0011] Furthermore, two heating pipes are provided between the dry filter and the mounting plate, and the heating pipes are respectively mounted on two side walls in the purification box.

[0012] Furthermore, a first material receiving port and a second material receiving port respectively close to the two first annular blocking plates are opened on the wall of the outer cylinder close to the inner bottom surface of the purification box, and a sealing cover is clamped at the first material receiving port and the second material receiving port. A containing box is provided below the outer cylinder, and a first sealing door is installed on the purification box on one side of the containing box.

[0013] Furthermore, a partition is provided in the purification box, and the tail of the outer cylinder is installed on the partition; the inner top surface and the inner bottom surface of the purification box on one side of the partition are both provided with slide grooves, and the dry filter is limitedly installed in the slide grooves; a second sealing door is installed on the purification box on one side of the dry filter.

[0014] Furthermore, a fixing block is provided in the purification box, the mounting plate is connected and installed with the fixing block, a third sealing door is installed on the purification box on one side of the fixing block, and a discharge pipe is installed at the tail end of the purification box.

[0015] Furthermore, a sealing member for fitting against an inner wall of the mounting plate is installed on a side surface of the purification box.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By arranging the first annular blocking piece and the second annular blocking piece between the outer cylinder and the inner cylinder, large particle pollutants can be effectively intercepted, the burden of subsequent purification devices can be reduced, and the overall purification efficiency can be improved. In addition, the outer cylinder, the inner cylinder, the first annular blocking piece and the second annular blocking piece are all designed to be conical in shape, which is conducive to the absorption and circulation of exhaust gas.

[0017] 2. The design of the revolving door structure purification component enables the six purification boxes to rotate under the drive of the driving motor, so that both sides of the purification box have the opportunity to filter the paint exhaust gas, thereby ensuring that the activated carbon in the purification box is fully utilized; and the six rotatable purification boxes and the mounting plate form a first purification space and a second purification space, so that the paint exhaust gas is exposed to ultraviolet rays and filtered and purified by activated carbon when passing through the two purification spaces.

[0018] 3. In the second purification space surrounded by the purification box and the mounting plate, a curved reflector is installed on the inner side of the curved plate, which can increase the density of the ultraviolet light beam, make the light energy per unit area higher, and further improve the exhaust gas purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the purification box after cross-section in the present invention; Figure 3 Schematic diagram of the exhaust gas primary purification mechanism in the present invention; Figure 4 It is a schematic diagram of the internal structure of the exhaust gas primary purification mechanism after the outer cylinder is cut away; Figure 5 It is a schematic diagram of the flow direction of exhaust gas in the exhaust gas primary purification mechanism; Figure 6 An exploded view of the exhaust gas primary purification mechanism of the present invention; Figure 7 It is a structural schematic diagram of the mounting plate in the present invention; Figure 8 It is an exploded view of the purification component of the revolving door structure in the present invention; Fig. 9 It is a schematic diagram of the installation plate and the revolving door structure purification assembly in the present invention cooperating to purify the exhaust gas; Fig.10 is a schematic diagram of a dry filter in the present invention; Fig.11 It is a structural schematic diagram of the present invention.

[0020] In the figure: 1-absorption tube, 2-purification box, 3-exhaust gas primary purification mechanism, 4-dry filter, 5-mounting plate, 6-revolving door structure purification component, 7-arc reflector, 8-guide plate, 9-heating tube, 10-sealing cover, 11-holding box, 12-first sealing door, 13-second sealing door, 14-third sealing door, 15-discharge pipe, 16-seal, 21-partition, 22-slide, 23-fixed block; 31-outer cylinder, 32-inner cylinder, 311-first annular blocking piece, 312-first receiving port, 313-second receiving port, 321-second annular blocking piece; 51-arc plate, 52-side plate, 511-first arc plate, 512-second arc plate, 513-air inlet; 61 - rotating column, 62 - purification box, 63 - ultraviolet lamp, 64 - driving motor, 65 - first purification space, 66 - second purification space. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Combination Figures 1 to 11 The illustrated wood processing paint spraying waste gas purification device comprises an absorption device and a purification device, wherein the absorption device comprises an absorption pipe 1 and an absorption fan, wherein the absorption pipe 1 is connected to the paint spraying room, and the absorption fan is an air pump device, which can provide power to cause the waste gas generated in the paint spraying room to flow into the purification device along the absorption pipe 1; The purification device includes an exhaust gas purification box 2, and an exhaust gas primary purification mechanism 3 connected to the absorption pipe 1 is provided at the front end of the exhaust gas purification box 2, and large particle pollutants impacting thereon are collected by blocking members arranged at intervals and staggered in the exhaust gas primary purification mechanism 3; a dry filter 4 for filtering paint mist and impurities in the exhaust gas is provided on one side of the exhaust gas primary purification mechanism 3, and a mounting plate 5 is provided on one side of the dry filter 4, and a revolving door structure purification component 6 for purifying the exhaust gas by using activated carbon and ultraviolet irradiation is installed on the mounting plate 5; like Figure 2-6As shown, the exhaust gas preliminary purification mechanism 3 includes an outer cylinder 31 connected to the absorption tube 1, and an inner cylinder 32 is arranged inside the outer cylinder 31; the outer cylinder 31 and the inner cylinder 32 are both conical cylinders, and the diameter of the head near the absorption tube 1 is smaller than the diameter of the tail; the head of the inner cylinder 32 is closed, and the tail is fastened to the outer cylinder 31 by a fastener, as shown in FIG. Figure 3 In the embodiment, the fasteners used to connect the outer cylinder 31 and the inner cylinder 32 are bolts; like Figure 4 In the embodiment, a plurality of first annular blocking sheets 311 are provided on the inner wall of the outer cylinder 31. The inner diameter of the first annular blocking sheets 311 is larger than the diameter of the cross section of the inner cylinder 32 where the first annular blocking sheets 311 are located. Specifically, there is a certain spacing between the inner edge of the first annular blocking sheets 311 and the outer wall of the inner cylinder 32 where the first annular blocking sheets 311 are located, and the exhaust gas can pass through this spacing. A plurality of second annular blocking pieces 321 are provided on the outer wall of the inner cylinder 32. The outer diameter of the second annular blocking pieces 321 is smaller than the diameter of the cross section of the outer cylinder 31 where the second annular blocking pieces 321 are located. Specifically, there is a certain spacing between the outer edge of the second annular blocking pieces 321 and the inner wall of the outer cylinder 31 where the second annular blocking pieces 321 are located, and the exhaust gas can pass through this spacing. The first annular blocking piece 311 and the second annular blocking piece 321 are arranged alternately and spaced apart, and the first second annular blocking piece 321 is the frontmost annular blocking piece; Specifically, Figure 4-5 In the embodiment, two first annular blocking sheets 311 are arranged on the inner wall of the outer cylinder 31, and two second annular blocking sheets 321 are arranged on the outer wall of the inner cylinder 32 in an alternating manner with the first annular blocking sheets 311. The first annular blocking sheets 311 and the second annular blocking sheets 321 are both conical ring-shaped, and the cone angle directions of the two are the same as the cone angle directions of the outer cylinder 31 and the inner cylinder 32. The conical ring-shaped design of the blocking sheets is conducive to the flow diversion of the exhaust gas flow. When in use, the exhaust gas enters the exhaust gas primary purification mechanism 3 through the absorption pipe 1, and because the head of the inner cylinder 32 is closed, the exhaust gas flows in from the interval between the inner cylinder 32 and the outer cylinder 31. At this time, there is Large particle pollutants, especially large particle solid pollutants, including wood chips, etc., will first hit the second annular blocking piece 321 during the flow of the exhaust gas flow, blocking the large particle pollutants therein, and then the exhaust gas flow will hit the first annular blocking piece 311, blocking the large particle pollutants therein again, and then the large particle pollutants in the exhaust gas will be hit and blocked twice, and then the exhaust gas will flow out from the space between the inner cylinder 32 and the outer cylinder 31, completing the initial purification of the particulate matter in the exhaust gas; and due to the effect of gravity, most of the particle pollutants will finally fall on the angle between the first annular blocking piece 311 and the inner wall of the bottom of the outer cylinder 31; In addition, when in use, the second annular blocking piece 321 can be made of silicone material, which is convenient for installation and disassembly. For example, after the fasteners are removed, the inner tube 32 can be pulled out directly from the outer tube 31 from the tail. The silicone material can prevent the first annular blocking piece 311 from blocking the second annular blocking piece 321, and the same is true during installation. On the other hand, the use of silicone material can be easy to clean, and it can be rinsed with water.

[0024] like Figure 3-6 As shown, in order to facilitate the collection of particulate matter filtered in the exhaust gas primary purification mechanism 3, a first receiving port 312 and a second receiving port 313 are provided on the wall of the outer cylinder 31 close to the inner bottom surface of the purification box 2, which are respectively close to the two first annular blocking plates 311, and a sealing cover 10 is clamped at the first receiving port 312 and the second receiving port 313. A containing box 11 is provided below the outer cylinder 31, and a first sealing door 12 is installed on the purification box 2 on one side of the containing box 11. When in use, in the shutdown state, the first sealing door 12 is opened and the two sealing covers 10 are removed, and the particulate matter will fall into the containing box 11. In addition, the first receiving port 312 and the second receiving port 313 can be used to knock the inner cylinder 32 to make the particulate matter on the conical surface fall down, and then be collected.

[0025] like Figure 2 , Fig.10 and Fig.11 As shown, a partition 21 is provided in the purification box 2, and the tail of the outer cylinder 31 is installed on the partition 21; a slide groove 22 is provided on the inner top surface and the inner bottom surface of the purification box 2 on one side of the partition 21, and the dry filter 4 is limitedly installed in the slide groove 22; a second sealing door 13 is installed on the purification box 2 on one side of the dry filter 4; when in use, the exhaust gas flows into the dry filter 4 after preliminary purification by the exhaust gas primary purification mechanism 3, wherein the dry filter 4 is the prior art, which can remove particulate matter in the exhaust gas on the one hand, and filter the liquid paint mist in the exhaust gas on the other hand; thereby reducing the subsequent filtering pressure of the activated carbon and avoiding blockage of the activated carbon by a large number of particulate matter; and the opening of the second sealing door 13 and the slide groove 22 facilitates the installation and disassembly of the dry filter 4.

[0026] like Figure 7-9As shown, the mounting plate 5 includes a semicircular arc plate 51 and side plates 52 located at both ends of the arc plate 51; the arc plate 51 is further divided into a first arc plate 511 and a second arc plate 512, and an air inlet 513 is opened between the first arc plate 511 and the second arc plate 512; the inner sides of the first arc plate 511 and the second arc plate 512 are both fitted with arc reflectors 7 on the inner wall of the arc surface; a number of guide plates 8 are installed at the air inlet 513; the revolving door structure purification component 6 includes a rotating column 61 rotatably mounted on the side plate 52 through a bearing, six purification boxes 62 are installed at equal angles on the outer wall of the rotating column 61, the interior of the purification box 62 is filled with activated carbon, an ultraviolet lamp 63 is installed on the outer wall of the rotating column 61 between two adjacent purification boxes 62, a driving motor 64 is installed on the top surface of the purification box 2, and the output end of the driving motor 64 is connected to the top of the rotating column 61; like Fig. 9 As shown, the rotating column 61 drives the purification box 62 to rotate under the drive of the driving motor 64, and the two purification boxes 62 and the air inlet 513 together form a first purification space 65. When the exhaust gas passes through the first purification space 65, it is irradiated by ultraviolet rays and filtered and purified by activated carbon; at the same time, the two purification boxes 62 and the first arc plate 511 and the second arc plate 512 form a second purification space 66. When the exhaust gas passes through the second purification space 66, it is irradiated by ultraviolet rays and filtered and purified by activated carbon. In addition, due to the setting of the arc reflector 7, the light energy per unit area in the second purification space 66 is higher; When in use, the exhaust gas is filtered by the dry filter 4 and then enters the first purification space 65 through the air inlet 513 and the guide plate 8. At this time, the exhaust gas is irradiated by the ultraviolet lamp 63, and then the exhaust gas flows through the purification boxes 62 on both sides, and the organic pollutants in the exhaust gas are removed by the adsorption capacity of the activated carbon in the purification box 62; then the exhaust gas enters the second purification space 66 and is irradiated by the ultraviolet lamp 63 again. In addition, the ultraviolet light beam emitted by the ultraviolet lamp 63 irradiates the curved reflector 7 installed on the inner side of the first arc plate 511 and the second arc plate 512. The curved reflector 7 can It can converge the divergent ultraviolet light beams, so that the light beams can be strengthened within a certain range, thereby not only increasing the density of the ultraviolet light beams and making the light energy per unit area higher, but also the enhanced ultraviolet light beams can more effectively crack the organic molecular chains in the exhaust gas, thereby improving the overall purification efficiency, and without increasing the ultraviolet light source, the intensity of the light beam is increased, thereby saving energy; then the exhaust gas flows through the purification box 62 again, and the activated carbon therein adsorbs the organic pollutants in the exhaust gas again; in this way, the revolving door structure purification component 6 greatly improves the purification efficiency and purification effect of the exhaust gas; On the basis of the above, the driving motor 64 adopts a reduction motor, and the driving motor 64 does not drive the rotating column 61 to rotate continuously, but rotates intermittently, and rotates the same angle each time, so that it can form a Fig. 9The first purification space 65 and the second purification space 66 shown in the figure enable the six purification boxes 62 to rotate under the drive of the driving motor 64, so that the two sides of each purification box 62 can have the opportunity to directly face the flowing paint exhaust gas, thereby ensuring that the activated carbon in the purification box 62 is fully utilized and avoiding the situation where the utilization rate of the activated carbon on both sides of the purification box 62 is greatly different; Figure 8-9 As shown, a seal 16 for fitting the inner wall of the mounting plate 5 is installed on the side of the purification box 62, wherein the seal 16 can be installed on both the top and bottom surfaces of the purification box 62 according to actual conditions to prevent exhaust gas from leaking out, and the seal 16 can be a plastic sealing strip or the like.

[0027] Furthermore, if Figure 2 As shown, two heating tubes 9 are provided between the dry filter 4 and the mounting plate 5, and the heating tubes 9 are respectively installed on the two side walls in the purification box 2; when in use, the heating tubes 9 are used to heat the exhaust gas filtered by the dry filter 4, and the heating can accelerate the movement of organic molecules in the exhaust gas, which helps them to better contact with the surface of the activated carbon, thereby improving the adsorption efficiency.

[0028] like Figure 2 As shown, a fixing block 23 is provided in the purification box 2, and the mounting plate 5 is connected and installed with the fixing block 23. A third sealing door 14 is installed on the purification box 2 on one side of the fixing block 23, wherein the setting of the third sealing door 14 can facilitate the replacement of the purification box 62 or the cleaning of the ultraviolet lamp 63; a discharge pipe 15 is installed at the tail end of the purification box 2, and the processing personnel can sample and test the purified waste gas in the purification box 2. If it meets the emission standards, it can be discharged into the natural environment. If further purification treatment is still required, the waste gas can be directed to the equipment of the next purification process through the discharge pipe 15.

[0029] The following is the structure and composition of the dry filter 4: Filter material: Dry filters are filled with different types of fiber materials that can effectively capture particulate matter and water mist in the air; Filter frame: The filter material is usually installed in a frame made of metal mesh to facilitate replacement and maintenance; Differential pressure gauge: Many dry filters are equipped with a differential pressure gauge to monitor the operating status of the filter. When the differential pressure reaches a certain value, it indicates that the filter material needs to be replaced.

[0030] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A paint spraying waste gas purification device for wood processing, comprising an absorption device and a purification device, wherein the absorption device comprises an absorption pipe (1) and an absorption fan, and the absorption pipe (1) is connected to the paint spraying room; characterized in that: The purification device comprises an exhaust gas purification box (2), wherein a front end portion of the exhaust gas purification box (2) is provided with an exhaust gas primary purification mechanism (3) connected to the absorption pipe (1), wherein the exhaust gas primary purification mechanism (3) collects large particle pollutants that collide therewith through blocking members arranged at intervals and in a staggered manner; a dry filter (4) for filtering paint mist and impurities in the exhaust gas is provided on one side of the exhaust gas primary purification mechanism (3), and a mounting plate (5) is provided on one side of the dry filter (4), and a revolving door structure purification component (6) for purifying the exhaust gas by using activated carbon and ultraviolet irradiation is installed on the mounting plate (5).

2. The paint spraying waste gas purification equipment for wood processing according to claim 1 is characterized in that: The exhaust gas primary purification mechanism (3) comprises an outer cylinder (31) connected to the absorption tube (1), wherein an inner cylinder (32) is arranged inside the outer cylinder (31); the outer cylinder (31) and the inner cylinder (32) are both conical cylinders, and the diameter of the head of the two cylinders near the absorption tube (1) is smaller than the diameter of the tail; the head of the inner cylinder (32) is closed, and the tail is fastened to the outer cylinder (31) by a fastener; a plurality of first annular blocking sheets (311) are arranged on the inner wall of the outer cylinder (31), and the first annular blocking sheets (311) are provided on the inner wall of the outer cylinder (31). The inner diameter of an annular blocking piece (311) is larger than the diameter of the cross section of the inner cylinder (32) at the position where the annular blocking piece (311) is located; a plurality of second annular blocking pieces (321) are provided on the outer wall of the inner cylinder (32); the outer diameter of the second annular blocking pieces (321) is smaller than the diameter of the cross section of the outer cylinder (31) at the position where the second annular blocking pieces (321) are located; the first annular blocking pieces (311) and the second annular blocking pieces (321) are arranged alternately at intervals, and the first of the second annular blocking pieces (321) is the annular blocking piece at the front end.

3. The paint spraying waste gas purification equipment for wood processing according to claim 2 is characterized in that: Two first annular blocking sheets (311) are arranged at intervals on the inner wall of the outer cylinder (31), and two second annular blocking sheets (321) are arranged at intervals and staggered with the first annular blocking sheets (311) on the outer wall of the inner cylinder (32); both the first annular blocking sheet (311) and the second annular blocking sheet (321) are conical ring-shaped, and the directions of the cone angles of the two are the same as the directions of the cone angles of the outer cylinder (31) and the inner cylinder (32); the material of the second annular blocking sheet (321) is silicone.

4. The paint spraying waste gas purification equipment for wood processing according to claim 3 is characterized in that: The mounting plate (5) comprises a semicircular arc plate (51) and side plates (52) located at both ends of the arc plate (51); the arc plate (51) is further divided into a first arc plate (511) and a second arc plate (512); an air inlet (513) is provided between the first arc plate (511) and the second arc plate (512); the inner sides of the first arc plate (511) and the second arc plate (512) are both fitted with an inner wall of the arc surface to mount a curved reflector (7); and a plurality of guide plates (8) are installed at the air inlet (513).

5. The paint spraying waste gas purification equipment for wood processing according to claim 4 is characterized in that: The revolving door structure purification assembly (6) comprises a rotating column (61) rotatably mounted on the side plate (52) via a bearing, six purification boxes (62) being mounted at equal angles on the outer wall of the rotating column (61), the interior of the purification box (62) being filled with activated carbon, an ultraviolet lamp (63) being mounted on the outer wall of the rotating column (61) between two adjacent purification boxes (62), a driving motor (64) being mounted on the top surface of the purification box (2), the output end of the driving motor (64) being connected to the top end of the rotating column (61); the rotating column (61) is driven by the driving motor (64) to drive the The purification box (62) rotates, and the two purification boxes (62) and the air inlet duct (513) together form a first purification space (65). When the exhaust gas passes through the first purification space (65), it is irradiated by ultraviolet rays and filtered and purified by activated carbon. At the same time, the two purification boxes (62) and the first arc plate (511) and the second arc plate (512) form a second purification space (66). When the exhaust gas passes through the second purification space (66), it is irradiated by ultraviolet rays and filtered and purified by activated carbon. In addition, due to the provision of the arc reflector (7), the light energy per unit area in the second purification space (66) is higher.

6. The paint spraying waste gas purification equipment for wood processing according to claim 5 is characterized in that: Two heating pipes (9) are provided between the dry filter (4) and the mounting plate (5), and the heating pipes (9) are respectively mounted on two side walls inside the purification box (2).

7. The paint spraying waste gas purification equipment for wood processing according to claim 6 is characterized in that: A first material receiving opening (312) and a second material receiving opening (313) are provided on the wall of the outer cylinder (31) close to the inner bottom surface of the purification box (2), and are close to the two first annular blocking plates (311) respectively. A sealing cover (10) is clamped at the first material receiving opening (312) and the second material receiving opening (313). A storage box (11) is provided below the outer cylinder (31), and a first sealing door (12) is installed on the purification box (2) on one side of the storage box (11).

8. The paint spraying waste gas purification equipment for wood processing according to claim 7 is characterized in that: A partition (21) is provided inside the purification box (2), and the tail of the outer cylinder (31) is mounted on the partition (21); a slide groove (22) is provided on the inner top surface and the inner bottom surface of the purification box (2) on one side of the partition (21), and the dry filter (4) is limitedly mounted in the slide groove (22); a second sealing door (13) is installed on the purification box (2) on one side of the dry filter (4).

9. The paint spraying waste gas purification equipment for wood processing according to claim 8, characterized in that: A fixing block (23) is provided in the purification box (2), the mounting plate (5) is connected and mounted to the fixing block (23), a third sealing door (14) is mounted on the purification box (2) on one side of the fixing block (23), and a discharge pipe (15) is mounted at the rear end of the purification box (2).

10. The paint spraying waste gas purification equipment for wood processing according to claim 9, characterized in that: A sealing member (16) is installed on the side of the purification box (62) for fitting against the inner wall of the mounting plate (5).

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