Easel wood spraying waste gas purification component and purification method

Abstract

The present invention discloses an easel wood spraying waste gas purification component and a purification method, which relates to the technical field of spraying waste gas treatment. The component includes a purification box, an air inlet connected to a collection pipe, and an air outlet connected to a negative pressure exhaust fan. A plurality of activated carbon filter boxes are symmetrically distributed in the purification box, and a collection box is provided between two adjacent activated carbon filter boxes located on the same horizontal plane. A first diverter plate is provided at one end of the purification box near the air inlet, and a second diverter plate is provided at one end of the purification box near the air outlet. The present invention uses the first diverter plate and the second diverter plate arranged in the purification box. When the waste gas passes through the air inlet and the wind shield plate in sequence and enters the middle of the purification box, the waste gas will be divided by the first diverter plate to form two upper and lower waste gases, thereby avoiding the problem that the waste gas density is higher or lower than the air density, resulting in excessive use of activated carbon at the corresponding position above or below the inside of the purification box.

Description

Technical Field

[0001] The invention relates to the technical field of paint spraying waste gas treatment, and in particular to an easel wood spraying waste gas purification component and a purification method. Background Art

[0002] Wood often needs to be polished and sprayed during processing, and harmful volatiles generated during wood painting need to be effectively removed to reduce environmental pollution. Common treatment technologies include activated carbon adsorption, catalytic combustion, and biofilters, each of which has its own advantages and can effectively remove harmful substances in exhaust gas to ensure that exhaust gas emissions meet national standards.

[0003] A Chinese patent with application number CN202321599420.7 discloses an activated carbon filtration device for a spraying process, including a shell, with an air inlet and an exhaust port respectively arranged at both ends of the shell, an adsorption component installed inside the shell, and a drying component installed at one end of the shell close to the air inlet, the drying component includes a drying tube and a drying box, and the drying box is installed inside the drying tube. By introducing the exhaust gas from the spray paint from the air inlet into the adsorption component, the drying box can absorb the moisture in the exhaust gas and effectively remove the moisture in the exhaust gas. However, the above invention has poor purification efficiency for the exhaust gas and cannot meet the actual use requirements.

[0004] A Chinese patent with application number CN201711201592.3 discloses a high-efficiency activated carbon adsorption box, whose structure includes a product nameplate, an adsorption box body, a connecting flange, fixing bolt mounting holes, and an exhaust gas collection pipe. The above device can adsorb harmful substances in the air and kill bacteria in the air, effectively improving the quality of air treated by the adsorption box. However, when the above invention is used, since the density of the exhaust gas is usually greater than the density of air, the exhaust gas will flow downward during the transmission process, causing the activated carbon filter device below to be deactivated too quickly, requiring frequent replacement.

[0005] At the same time, existing exhaust gas filtering devices mostly place activated carbon in a filter box, use negative pressure to make the exhaust gas contact with the activated carbon and filter and purify the exhaust gas. However, since the exhaust gas is mixed with a large amount of dust impurities, when the exhaust gas flows toward the filter box through negative pressure, the dust impurities mixed therein will be adsorbed on the filter box, causing the filter holes on the filter box to be blocked, affecting the filtering effect of the activated carbon on the exhaust gas.

[0006] Furthermore, in the prior art, when filtering and purifying waste gas of different concentrations, multiple purification devices are usually connected end to end according to the concentration of the waste gas to ensure effective purification of the waste gas. However, in actual use, the concentration of the waste gas is always in a changing state, and the prior art lacks a device for adaptively adjusting the purification intensity for different concentrations. Summary of the invention

[0007] The purpose of the present invention is to solve the above problems, and the present invention provides an easel wood spraying waste gas purification component and a purification method.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an easel wood spraying waste gas purification component, comprising a purification box, an air inlet connected to a collection pipe, and an air outlet connected to a negative pressure exhaust fan, wherein a plurality of activated carbon filter boxes are symmetrically distributed in the purification box, and a collection box is provided between two adjacent activated carbon filter boxes located on the same horizontal plane, a first diverter plate is provided at one end of the purification box close to the air inlet, and a second diverter plate is provided at one end of the purification box close to the air outlet;

[0009] The first splitter plate and the second splitter plate are connected via a driving assembly, the first splitter plate comprises a telescopic closing plate connected to the driving assembly, and the second splitter plate comprises a lifting plate connected to the driving assembly;

[0010] The driving assembly includes a connecting shaft, and a connecting rod is respectively provided on both sides of the middle part of the connecting shaft. The ends of the two connecting rods away from the connecting shaft extend into the first diverter plate and the second diverter plate respectively, and a telescopic rod is connected to the connecting rod close to the first diverter plate. The upper and lower ends of the connecting shaft are respectively connected to the collection box through hinges.

[0011] Preferably, a plurality of support seats are arranged in an array around the bottom of the purification box, a plurality of material changing ports are opened on one side of the purification box, a material changing assembly is provided on the outer side wall of the purification box, and the material changing assembly includes two symmetrically arranged limit rods, and the two limit rods are connected by a plurality of sliding rods, and a sliding block is provided on the sliding rod.

[0012] Preferably, each of the material change ports is sealed by a plurality of sliding blocks, a sealing gasket is provided on the side of the sliding block close to the purification box body, two groups of material change ports are provided in total and are distributed in a mirror-symmetrical manner, and each of the material change ports is provided with a plurality of activated carbon filter boxes and collection boxes.

[0013] Preferably, two wind shields are symmetrically distributed at the upper and lower ends of one side of the purification box body near the air inlet, and each wind shield is provided with a secondary air inlet hole at the end away from the middle of the purification box body. An opening and closing plate is provided in the secondary air inlet hole, and the gap between the two wind shields forms a main air inlet hole. The telescopic closing plate and the wind shield cooperate with each other to adjust the size of the main air inlet hole.

[0014] Preferably, two sliding plates are symmetrically arranged in the middle of one side near the air outlet inside the purification box, and the adjacent ends of the two sliding plates are respectively connected to the lifting plates, and a locking piece is provided on the activated carbon filter box attached to the sliding plate, and the locking piece is used to control the connection and disconnection between the activated carbon filter box and the sliding plate.

[0015] Preferably, the activated carbon filter box is filled with a plurality of activated carbon bricks, the bottom of the activated carbon filter box is provided with a plurality of fixing columns in a linear array, and the purification box is provided with connecting columns for fixing the activated carbon filter box, a plurality of filter holes are provided on the side walls of the activated carbon filter box, and the collecting box is composed of a filter screen on the top and three connecting plates spliced ​​together.

[0016] Preferably, the first diverter plate also includes a connecting groove, a telescopic rod is connected to the side of the connecting groove close to the air inlet, and an inflation groove is provided on the side of the diverter plate close to the air inlet, the inflation groove and the connecting groove are interconnected, and telescopic closing plates are connected to the upper and lower ends of the inflation groove.

[0017] Preferably, the second diverter plate further comprises a pressure groove, and a lifting plate is respectively provided at the upper and lower ends of one side of the pressure groove close to the air outlet, and a connecting rod connected to the second diverter plate extends into the pressure groove.

[0018] Preferably, the hinged part includes an hinged arm, one end of which is movably connected to the connecting shaft, and the other end of the hinged arm is movably connected to a hinged seat, and the hinged seats are respectively arranged at one end of two collection boxes close to each other, and the same collection box is connected to the driving assembly through two groups of hinges, and an external collection bin is provided at the bottom of the purification box.

[0019] The present invention also provides a method for purifying spraying waste gas, comprising the following steps:

[0020] S1. Equipment installation: Place the purification box in the working area, connect the air inlet with the collection pipe, and connect the air outlet with the negative pressure exhaust fan to complete the installation;

[0021] S2, detecting the activity of the activated carbon, pulling the activated carbon filter box out of the purification box, and detecting and replacing the activated carbon in the activated carbon filter box;

[0022] S3, purification operation, by controlling the negative pressure exhaust fan to work, the gas in the purification box is extracted, the exhaust gas flows from the air inlet into the purification box under the action of negative pressure, and the exhaust gas is purified and filtered through the activated carbon in the activated carbon filter box;

[0023] S4, exhaust gas discharge, the exhaust gas filtered by the activated carbon filter box moves toward the air outlet under the action of the negative pressure exhaust fan and is discharged from the purification box to complete the purification and filtration of the exhaust gas.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention arranges a first splitter plate and a second splitter plate in the purification box. When the exhaust gas enters the middle of the purification box through the air inlet and the wind shield in sequence, the exhaust gas will be divided by the first splitter plate to form two upper and lower exhaust gases, thereby avoiding the exhaust gas density being higher or lower than the air density, and avoiding the exhaust gas from moving downward or upward in a concentrated manner, causing the activated carbon filter box located above or below the purification box to be over-filtered and quickly deactivated.

[0026] 2. The present invention cooperates with the driving component, the first diverter plate and the second diverter plate to allow the exhaust gas to enter from the two sides of the purification box to the middle of the purification box and then move from the middle of the purification box to the two sides of the purification box and be discharged, thereby filtering the same exhaust gas twice, thereby adaptively adjusting the filtering intensity for exhaust gases of different concentrations and improving the filtering effect for exhaust gases of different concentrations.

[0027] 3. The present invention changes the flow direction of the gas through the cooperation of the driving components and the collecting box, and cooperates with the movement of the activated carbon filter box to effectively separate the impurities mixed with the exhaust gas in the purification box from the exhaust gas, and at the same time, the particulate impurities adsorbed on the activated carbon filter box are centrally processed and collected without stopping the machine, effectively avoiding the problem of filtering effect affected by impurity blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of a half-section structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the connection structure between the purification box and the material replacement component of the present invention;

[0031] Figure 4 This is a schematic diagram of the connection structure between the drive assembly and the collection box of the present invention;

[0032] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the A department;

[0033] Figure 6 This is a schematic diagram of the structure of the activated carbon filter box and the collection box of the present invention;

[0034] Figure 7A schematic diagram of a half-section structure of a first manifold and a second manifold of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the drive assembly of the present invention in a vertical state;

[0036] Fig. 9 It is a schematic diagram of the horizontal state structure of the driving assembly of the present invention.

[0037] In the figure: 1. purification box; 2. air inlet; 3. air outlet; 4. support seat; 5. material change assembly; 501. limit rod; 502. slide rod; 503. slide block; 504. sealing gasket; 6. material change port; 7. activated carbon filter box; 701. fixing column; 702. filter hole; 8. collection box; 9. first diverter plate; 901. telescopic closing plate; 902. connecting groove; 903. charging groove; 10. second diverter plate; 1001. lifting plate; 1002. pressure groove; 11. driving assembly; 1101. connecting shaft; 1102. connecting rod; 1103. telescopic rod; 12. hinge; 1201. articulated arm; 1202. articulated seat; 13. wind shield; 14. sliding plate; 15. external collection bin; 16. auxiliary air inlet. DETAILED DESCRIPTION

[0038] 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.

[0039] Embodiment 1

[0040] like Figures 1 to 7 As shown, an easel wood spraying waste gas purification component comprises a purification box 1, an air inlet 2 connected to a collecting pipe, and an air outlet 3 connected to a negative pressure exhaust fan. A plurality of activated carbon filter boxes 7 are symmetrically distributed in the purification box 1, and a collecting box 8 is provided between two adjacent activated carbon filter boxes 7 located on the same horizontal plane. A first diverter plate 9 is provided at one end of the purification box 1 close to the air inlet 2, and a second diverter plate 10 is provided at one end of the purification box 1 close to the air outlet 3. By connecting the air inlet 2 with the collecting pipe and arranging a negative pressure exhaust fan at the air outlet 3, when it is necessary to purify the wood spraying waste gas, the negative pressure exhaust fan is controlled to work, the gas in the purification box 1 is extracted, and under the action of its negative pressure, the spraying waste gas enters the purification box 1 through the collecting pipe and the air inlet 2, and the waste gas entering the purification box 1 is purified and filtered by the plurality of activated carbon filter boxes 7 arranged in the purification box 1, and discharged from the air outlet 3, thereby realizing the purification operation of the wood spraying waste gas.

[0041] It should be noted that a spray device and a drying device can be added between the air inlet 2 and the collection pipe according to actual needs, so as to pre-treat the spraying waste gas and further improve the purification effect of the device on wood spraying waste gas.

[0042] A plurality of support seats 4 are arranged in an array around the bottom of the purification box 1, a plurality of material changing ports 6 are opened on one side of the purification box 1, and a material changing assembly 5 is arranged on the outer side wall of the purification box 1. The material changing assembly 5 includes two symmetrically arranged limit rods 501, and the two limit rods 501 are connected by a plurality of slide rods 502. A sliding block 503 is arranged on the slide rod 502. The purification box 1 is supported and fixed by the plurality of support seats 4, so as to avoid abnormal vibration of the purification box 1 during operation. At the same time, through the cooperation between the sliding block 503 and the slide rod 502, when the activated carbon in the purification box 1 needs to be replaced, the sliding block 503 is pushed to slide on the slide rod 502, the material changing port 6 is opened and the activated carbon inside is taken out for replacement.

[0043] Each material change port 6 is sealed by a plurality of sliding blocks 503. A sealing gasket 504 is provided on one side of the sliding block 503 close to the purification box 1. There are two groups of material change ports 6 in total and they are distributed in a mirror-symmetrical manner. A plurality of activated carbon filter boxes 7 and a collection box 8 are provided in each material change port 6. By providing a sealing gasket 504 on one side of the sliding block 503, when the sliding block 503 and the material change port 6 overlap with each other, the material change port 6 is sealed by the provided sealing gasket 504, thereby preventing the exhaust gas from leaking out from the material change port 6 when purifying the spray exhaust gas. At the same time, the sliding block 503 is limited by the elastic force of the sealing gasket 504, thereby preventing the sliding block 503 from moving under its own gravity, causing the material change port 6 to be connected to the outside.

[0044] Two windshields 13 are symmetrically arranged at the upper and lower ends of one side of the purification box 1 near the air inlet 2, and the gap between the two windshields 13 forms a main air inlet hole. Two sliding plates 14 are symmetrically arranged in the middle of one side of the purification box 1 near the air outlet 3. Through the arrangement of the windshield 13 and the sliding plate 14, when the negative pressure exhaust fan connected to the air outlet 3 performs an exhaust operation, the spray exhaust gas will enter the purification box 1 through the air inlet 2. Since the purification box 1 is located at the upper and lower ends of the air inlet 2 and the windshield 13 is arranged, the spray exhaust gas entering the purification box 1 from the air inlet 2 can only enter through the main air inlet hole. The middle part of the purification box 1 is located in the middle part of the purification box 1, and when the exhaust gas located in the purification box 1 moves toward the air outlet 3, since the two sliding plates 14 are located in the middle part of the purification box 1, the gas in the purification box 1 will be hindered during the movement, so the exhaust gas will move from the middle part of the purification box 1 to both sides of the purification box 1, bypass the sliding plates 14 and be discharged through the air outlet 3. In this process, through the multiple activated carbon filter boxes 7 arranged in the purification box 1, the exhaust gas moves from the middle part of the purification box 1 to both sides of the purification box 1, and the exhaust gas is filtered and purified by the activated carbon, thereby realizing the purification operation of the device for wood spraying exhaust gas.

[0045] At the same time, by means of the first diverter plate 9 and the second diverter plate 10 arranged in the purification box 1, when the exhaust gas enters the middle part of the purification box 1 through the air inlet 2 and the wind shield 13 in sequence, the exhaust gas will be divided by the first diverter plate 9 to form two upper and lower exhaust gases, thereby avoiding the problem that the exhaust gas density is higher or lower than the air density, causing the exhaust gas to move downward or upward in a concentrated manner, causing the activated carbon filter box 7 located above or below the inside of the purification box 1 to be over-filtered and quickly deactivated.

[0046] The activated carbon filter box 7 is filled with multiple activated carbon bricks. The bottom of the activated carbon filter box 7 is provided with multiple fixed columns 701 in a linear array, and the purification box body 1 is provided with a connecting column for fixing the activated carbon filter box 7. A plurality of filter holes 702 are provided on the side walls of the activated carbon filter box 7. The collecting box 8 is composed of a filter screen on the top and three connecting plates spliced ​​together. By arranging multiple fixed columns 701 and connecting columns at the bottom of the activated carbon filter box 7, strong support is provided for the activated carbon filter box 7, thereby avoiding the problem that the activated carbon filter box 7 is bent or offset after long-term use, resulting in gaps between the multiple activated carbon filter boxes 7, and the exhaust gas leaks out from the gaps and cannot be effectively purified.

[0047] At the same time, a collecting box 8 is arranged between two adjacent activated carbon filter boxes 7, so that some particulate impurities in the exhaust gas fall into the collecting box 8 due to their own gravity when moving in the purification box 1, thereby realizing the recovery of the particulate impurities in the exhaust gas and avoiding the particulate impurities moving with the exhaust gas, resulting in blockage of the activated carbon filter box 7 or secondary pollution of the air discharged from the air outlet 3.

[0048] When in use, the negative pressure exhaust fan connected to the air outlet 3 is controlled to perform exhaust operation, the gas in the purification box 1 is extracted, and the wood spraying waste gas is sucked into the purification box 1 through the air inlet 2 connected to the collection pipe, and the waste gas entering the middle of the purification box 1 is divided by the first diverter plate 9 and the second diverter plate 10 to form upper and lower waste gases, which are filtered and purified by the activated carbon filter box 7 and discharged outward from the air outlet 3, completing the purification operation of the wood spraying waste gas.

[0049] When the activated carbon in the activated carbon filter box 7 needs to be replaced, the sliding block 503 is pushed to move on the sliding rod 502, so that the material change port 6 and the sliding block 503 are offset from each other, exposing the activated carbon filter box 7 in the purification box 1, and the activated carbon filter box 7 is pulled out to replace the activated carbon therein, and then the activated carbon filter box 7 is put back into the purification box 1, and the sliding block 503 is pushed to overlap with the material change port 6 to complete the replacement of the activated carbon.

[0050] Embodiment 2

[0051] In actual use, the on-site operators found that when the exhaust gas was brought into contact with the activated carbon by negative pressure and the exhaust gas was filtered and purified, a large amount of dust impurities were mixed in the exhaust gas. This was because the easel needed to be polished before spraying the paint. The barbs, sharp edges, etc. on the easel bracket were polished off first to ensure the safety of the easel in the subsequent use. A large amount of dust impurities were generated during the polishing of the easel bracket; the paint was sprayed after polishing. Since there were a large amount of dust impurities mixed in the exhaust gas, the impurities could not be completely separated from the exhaust gas only by the precipitation of the impurities themselves, resulting in the impurities mixed in the exhaust gas being discharged outward with the exhaust gas or the dust impurities mixed in the exhaust gas being adsorbed on the filter box, resulting in the clogging of the filter hole 702 on the filter box, affecting the purification and filtering effect of the activated carbon on the exhaust gas. At the same time, since the exhaust gas concentration generated by the wood spraying paint is affected by the actual processing volume, the exhaust gas concentration is always in a changing state, and the device cannot be adaptively adjusted according to its concentration, resulting in the exhaust gas entering the purification box 1 cannot be optimally treated.

[0052] Therefore, in order to solve the above technical problems, the device also includes: a driving component 11 arranged between the first diverter plate 9 and the second diverter plate 10, the first diverter plate 9 includes a telescopic closing plate 901 and a connecting groove 902 connected to the driving component 11, the connecting groove 902 is connected to a telescopic rod 1103 on the side close to the air inlet 2, and an inflation groove 903 is provided on the side close to the air inlet 2 of the first diverter plate 9, the inflation groove 903 is connected to the connecting groove 902, and the upper and lower ends of the inflation groove 903 are connected to the telescopic closing plate 901, by providing a telescopic closing plate 901 on the side close to the air inlet 2 of the first diverter plate 9 An air-filling groove 903 and a telescopic closing plate 901 are arranged. When it is necessary to adjust the amount of exhaust gas entering the purification box 1 per unit time, the gas in the air-filling groove 903 is squeezed by the driving component 11, so that the gas in the air-filling groove 903 pushes the telescopic closing plate 901 to extend in the direction close to the wind shield 13, thereby adjusting the opening size of the main air inlet formed by the two wind shields 13, reducing the amount of exhaust gas entering the purification box 1 from the air inlet 2 per unit time, and avoiding the problem that the exhaust gas intake volume is greater than the exhaust gas filtering volume, resulting in the exhaust gas cannot be effectively purified and filtered.

[0053] The hinge 12 includes a hinge arm 1201, one end of which is movably connected to the connecting shaft 1101, and the other end of the hinge arm 1201 is movably connected to a hinge seat 1202, and the hinge seats 1202 are respectively arranged at the ends of the two collection boxes 8 close to each other, and the same collection box 8 is connected to the driving assembly 11 through two sets of hinges 12, and an external collection bin 15 is provided at the bottom of the purification box 1, and a secondary air inlet hole 16 is opened at one end of each windshield 13 away from the middle of the purification box 1. An opening and closing plate is provided in the secondary air inlet hole 16. By arranging the secondary air inlet hole 16 on the wind shield plate 13 and arranging the opening and closing plate in the secondary air inlet hole 16, when it is necessary to treat the exhaust gas with excessive concentration, the driving component 11 is adjusted and the secondary air inlet hole 16 is opened, so that the exhaust gas enters from both sides of the purification box 1 to the middle of the purification box 1 and then moves from the middle of the purification box 1 to both sides of the purification box 1 and is discharged, thereby filtering the same exhaust gas twice and improving the filtering effect of high-concentration exhaust gas.

[0054] The second diverter plate 10 includes a lifting plate 1001 and a pressure groove 1002 connected to the driving component 11. A lifting plate 1001 is respectively provided at the upper and lower ends of the pressure groove 1002 close to the air outlet 3. A connecting rod 1102 connected to the second diverter plate 10 extends into the pressure groove 1002. The driving component 11 includes a connecting shaft 1101. A connecting rod 1102 is respectively provided on both sides of the middle part of the connecting shaft 1101. The ends of the two connecting rods 1102 away from the connecting shaft 1101 extend into the first diverter plate 9 and the second diverter plate 10 respectively, and a telescopic rod 1103 is connected to the connecting rod 1102 close to the first diverter plate 9. The upper and lower ends of the connecting shaft 1101 are respectively connected to the collecting box 8 through hinges 12. The adjacent ends of the two sliding plates 14 are respectively connected to the lifting plate 1001, and a locking member is provided on the activated carbon filter box 7 fitted with the sliding plate 14. The locking member is used to control the connection and disconnection between the activated carbon filter box 7 and the sliding plate 14.

[0055] It should be noted that in the initial state, the connecting shaft 1101 is located on the side close to the air outlet 3, and the multiple articulated arms 1201 are in an inclined state. When the connecting shaft 1101 moves toward the air inlet 2, it will push the multiple articulated arms 1201 to gradually change from an inclined state to a vertical state, and make the two collection boxes 8 connected to the articulated arms 1201 move away from each other. Similarly, when the connecting shaft 1101 moves toward the air outlet 3, it will pull the multiple articulated arms 1201 to gradually change from an inclined state to a horizontal state, and make the two collection boxes 8 connected to the articulated arms 1201 move closer to each other.

[0056] First, if Figure 8As shown, by detecting the concentration of the exhaust gas, if the exhaust gas concentration is within the preset range at this time, the device operates normally. If the exhaust gas concentration is higher than the preset range at this time, it means that the content of harmful substances in the exhaust gas is too high. At this time, the telescopic rod 1103 set in the first diverter plate 9 is controlled to shrink, and the connecting rod 1102 is pulled to move toward the direction of the air inlet 2. During this process, the connecting rod 1102 will squeeze the gas in the connecting groove 902 and the inflation groove 903, so that the gas pushes the telescopic closing plate 901 to extend outward and fit with the wind shield 13. At this time, the exhaust gas entering from the air inlet 2 will not be able to move toward the middle of the purification box 1 through the main air inlet hole. Subsequently, the exhaust gas is moved from the upper and lower two auxiliary air inlet holes 16 toward the direction of the purification box 1 by controlling the opening of the auxiliary air inlet hole 16. During this process, the telescopic rod 1103 drives the connecting rod 1102 to move close to the air inlet. The exhaust gas enters the purification box 1 through the auxiliary air inlet 16, and is moved to the middle part of the purification box 1 through the activated carbon filter box 7 on the left side of the collection box 8 to complete the initial filtration under the action of suction. Subsequently, the exhaust gas passes through the activated carbon filter box 7 on the right side of the collection box 8 to flow to both sides of the purification box 1 through the negative pressure to perform secondary filtration and is discharged outwardly from the air outlet 3, thereby performing double filtration on high-concentration exhaust gas, further improving the filtration effect of the device, and effectively avoiding the problem that the exhaust gas concentration is always in a changing state and cannot be adaptively adjusted according to its concentration, resulting in the exhaust gas entering the purification box 1 cannot be optimally treated.

[0057] Secondly, after the device has been used for a long time, since the device is in the initial state, the exhaust gas moves from the middle of the purification box 1 through the activated carbon filter box 7 to the two sides of the purification box 1, and is discharged outward through the air outlet 3. When a large amount of particulate impurities are adsorbed on the filter net of the activated carbon filter box 7 near the middle of the purification box 1, causing the exhaust gas to be unable to be filtered normally, at this time, the telescopic rod 1103 is controlled to shrink toward the direction of the air inlet 2 first, thereby pulling the connecting shaft 1101 toward the direction of the air inlet 2 through the setting of the connecting rod 1102, and making the wind shield 13 and the telescopic closing plate 901 fit together, so that the gas enters the purification box 1 through the secondary air inlet 16. Since the collecting box 8 is fitted with the upper and lower sides of the purification box 1 at this time, the exhaust gas will first contact the activated carbon filter box 7 located on the left side of the collecting box 8, and move from the top of the activated carbon filter box 7 on the left to the bottom, thereby clearing the particulate impurities blocking the bottom of the activated carbon filter box 7 on the left.

[0058] like Fig. 9As shown, the telescopic rod 1103 is then controlled to move toward the direction of the air outlet 3, so that the device is first restored to its initial state and the telescopic rod 1103 is continued to be controlled to extend toward the direction of the air outlet 3. At this time, the connecting shaft 1101 will pull the multiple articulated arms 1201 from the inclined state to the horizontal state, and the two collecting boxes 8 connected to the articulated arms 1201 are brought closer to each other. At the same time, the connecting rod 1102 located in the pressure groove 1002 will push the lifting plate 1001 to extend, thereby pushing the sliding plate 14 to move from the middle of the purification box 1 to the two sides of the purification box 1. At this time, since the main air inlet is open, the exhaust gas will first enter the left side of the collecting box 8 through the main air inlet. Since the two collecting boxes 8 are close to each other and are located at the first diverter plate 9 and the second diverter plate The upper and lower ends of the plate 10 are fitted together, which makes it impossible for the exhaust gas to move directly through the middle of the purification box 1 toward the air outlet 3. The exhaust gas will first move to both sides through the activated carbon filter box 7 located on the left side of the collecting box 8, and then move to the middle of the purification box 1 through the activated carbon filter box 7 on the right side of the collecting box 8, thereby clearing the filter screen blocked by the right activated carbon filter box 7 near the middle of the purification box 1. The above process is repeated to continuously change the flow direction of the exhaust gas to clear the filter screen blocked by the activated carbon filter box 7, effectively avoiding the problem that the impurities mixed in the exhaust gas are adsorbed on the activated carbon filter box 7 after long-term use of the device, resulting in clogging of the filter holes 702 on the activated carbon filter box 7, affecting the purification and filtering effect of the activated carbon on the exhaust gas.

[0059] Finally, when it is necessary to recycle the particulate impurities in the purification box 1, the two activated carbon filter boxes 7 in contact with the sliding plate 14 are connected by controlling the movement of the locking member, so that the two activated carbon filter boxes 7 on the right follow the sliding plate 14 to move up and down, and then the telescopic rod 1103 is controlled to extend in the direction close to the air outlet 3, and the connecting shaft 1101 is driven to move in the direction of the air outlet 3 by the connecting rod 1102. At this time, the connecting shaft 1101 will pull the multiple articulated arms 1201 from the inclined state to the horizontal state, and make the two collection boxes 8 connected to the articulated arms 1201 close to each other and fit together, and at the same time, the pressure tank 100 is located The connecting rod 1102 in 2 will squeeze the gas in the pressure groove 1002 to extend the lifting plate 1001 to both sides, and push the sliding plate 14 to drive the two activated carbon filter boxes 7 on the right to move upward. At this time, the exhaust gas entering the purification box 1 from the air inlet 2 will move from the middle of the purification box 1 through the activated carbon filter box 7 on the left to the two sides of the purification box 1, and contact and filter the side wall of the activated carbon filter box 7 on the right, while the impurity particles in the exhaust gas will be blocked on the side wall of the activated carbon filter box 7 on the right, and move to the collection box 8 under the push of their own gravity and the exhaust gas, so as to collect the particulate impurities in the exhaust gas above.

[0060] The particles in the exhaust gas below will move to the bottom of the purification box 1 under the obstruction of the activated carbon filter box 7 on the right and the push of the exhaust gas, and will be collected centrally by the external collection bin 15, thereby realizing the centralized collection of particulate impurities in the purification box 1 without stopping the machine, effectively avoiding the problem that the impurities cannot be completely separated from the exhaust gas only by the precipitation of the impurities themselves.

[0061] It should be particularly noted that the present invention drives the two collecting boxes 8 to move closer or farther away through the driving component 11, and cooperates with the telescopic closing plate 901 and the lifting plate 1001 to change the flow direction of the exhaust gas in the purification box 1, and adjusts the number of times the exhaust gas passes through the activated carbon filter box 7, so as to adaptively adjust the filtration intensity for exhaust gases of different concentrations. At the same time, by adjusting the flow direction of the exhaust gas, the particulate impurities blocked in different areas of the activated carbon filter box 7 are cleared and centrally processed without stopping the machine, thereby further improving the purification efficiency of the device for exhaust gas.

[0062] Embodiment 3

[0063] The present invention also provides an exhaust gas purification method, which utilizes the above-mentioned easel wood processing exhaust gas purification component to purify the exhaust gas, and is particularly suitable for purifying the exhaust gas containing dust impurities generated by polishing easel wood during the processing of easel wood and the exhaust gas containing paint contained in spraying easel, and comprises the following steps:

[0064] S1. Equipment installation: Place the purification box 1 in the working area, connect the air inlet 2 with the collection pipe, and connect the air outlet 3 with the negative pressure exhaust fan to complete the installation.

[0065] S2, detecting the activity of the activated carbon, pulling out the activated carbon filter box 7 from the purification box 1, and detecting and replacing the activated carbon in the activated carbon filter box 7.

[0066] S3, purification operation, by controlling the negative pressure exhaust fan to work, the gas in the purification box 1 is extracted, and the gas containing dust impurities and paint exhaust gas generated at the easel grinding and spraying operation site is sucked into the purification box 1, and the exhaust gas flows from the air inlet 2 to the purification box 1 under the action of negative pressure, and the exhaust gas is purified and filtered by the activated carbon in the activated carbon filter box 7.

[0067] S4, exhaust gas is discharged. After being filtered by the activated carbon filter box 7, the exhaust gas moves toward the air outlet 3 under the action of the negative pressure exhaust fan and is discharged from the purification box 1 to complete the purification and filtration of the exhaust gas.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas purification assembly for wood spraying of an easel, comprising a purification box (1), an air inlet (2) and an air outlet (3), characterized in that: The purification box (1) is provided with an activated carbon filter box (7), a collection box (8), a first diverter plate (9) and a second diverter plate (10); The first splitter plate (9) and the second splitter plate (10) are connected via a drive assembly (11); the first splitter plate (9) comprises a telescopic closing plate (901) connected to the drive assembly (11); and the second splitter plate (10) comprises a lifting plate (1001) connected to the drive assembly (11); The driving assembly (11) comprises a connecting shaft (1101), and a connecting rod (1102) is respectively provided on both sides of the middle of the connecting shaft (1101), and the ends of the two connecting rods (1102) away from the connecting shaft (1101) respectively extend into the first diverter plate (9) and the second diverter plate (10), and the connecting rod (1102) on the side close to the first diverter plate (9) is connected to a telescopic rod (1103), and the upper and lower ends of the connecting shaft (1101) are respectively connected to the collection box (8) via hinges (12); The first diverter plate (9) further comprises a connecting groove (902), a telescopic rod (1103) being connected to a side of the connecting groove (902) close to the air inlet (2), and an air-filling groove (903) being provided on a side of the first diverter plate (9) close to the air inlet (2), the air-filling groove (903) being connected to the connecting groove (902), and the upper and lower ends of the air-filling groove (903) being connected to telescopic closing plates (901); The second diverter plate (10) further comprises a pressure groove (1002), and a lifting plate (1001) is respectively provided at the upper and lower ends of a side of the pressure groove (1002) close to the gas outlet (3), and a connecting rod (1102) connected to the second diverter plate (10) extends into the pressure groove (1002); The hinged member (12) comprises a hinged arm (1201), one end of the hinged arm (1201) being movably connected to the connecting shaft (1101), and the other end of the hinged arm (1201) being movably connected to a hinged seat (1202), and the hinged seats (1202) are respectively arranged at ends of two collection boxes (8) close to each other, and the same collection box (8) is connected to the driving assembly (11) via two sets of hinged members (12), and an external collection bin (15) is provided at the bottom of the purification box body (1).

2. The easel wood spraying exhaust gas purification assembly according to claim 1 is characterized in that: The air inlet (2) is connected to the collection pipe, and the air outlet (3) is connected to the negative pressure exhaust fan. A plurality of support seats (4) are provided at the bottom of the purification box (1), and a plurality of material replacement ports (6) are provided on one side of the purification box (1). A material replacement assembly (5) is provided on the side wall of the purification box (1). The material replacement assembly (5) includes two symmetrically arranged limit rods (501), and the two limit rods (501) are connected by a sliding rod (502), and a sliding block (503) is provided on the sliding rod (502).

3. The easel wood spraying exhaust gas purification assembly according to claim 2 is characterized in that: Each of the material exchange ports (6) is sealed by a plurality of sliding blocks (503), and a sealing gasket (504) is provided on a side of the sliding block (503) close to the purification box body (1). There are two groups of material exchange ports (6) in total and they are distributed in a mirror-symmetrical manner. A collection box (8) is provided between two adjacent activated carbon filter boxes (7) located on the same horizontal plane.

4. The easel wood spraying exhaust gas purification assembly according to claim 1 is characterized in that: Two windshields (13) are symmetrically arranged at the upper and lower ends of one side of the purification box (1) near the air inlet (2), and each windshield (13) is provided with a secondary air inlet hole (16) at one end away from the middle of the purification box (1). An opening and closing plate is arranged inside the secondary air inlet hole (16), and a gap between the two windshields (13) forms a main air inlet hole. The telescopic closing plate (901) cooperates with the windshield (13) to adjust the size of the main air inlet hole.

5. The easel wood spraying exhaust gas purification assembly according to claim 1 is characterized in that: Two sliding plates (14) are symmetrically arranged in the middle of one side of the purification box body (1) near the air outlet (3), and adjacent ends of the two sliding plates (14) are respectively connected to the lifting plate (1001), and a locking member is provided on the activated carbon filter box (7) affixed to the sliding plate (14), and the locking member is used to control the connection and disconnection between the activated carbon filter box (7) and the sliding plate (14).

6. The easel wood spraying exhaust gas purification assembly according to claim 1, characterized in that: The activated carbon filter box (7) is filled with a plurality of activated carbon bricks, the bottom of the activated carbon filter box (7) is provided with a plurality of fixing columns (701) in a linear array, and the purification box body (1) is provided with a connecting column for supporting the activated carbon filter box (7), a plurality of filter holes (702) are provided on the peripheral side wall of the activated carbon filter box (7), and the collection box (8) is composed of a filter screen at the top and three connecting plates spliced ​​together.

7. A method for purifying waste gas, the method utilizing the easel wood spraying waste gas purification assembly as claimed in claim 1 to purify waste gas, characterized in that: The following steps are involved: S1. Equipment installation: placing the purification box (1) in the working area, splicing the air inlet (2) with the collection pipe, and connecting the air outlet (3) with the negative pressure exhaust fan to complete the installation; S2, detecting the activity of the activated carbon, extracting the activated carbon filter box (7) from the purification box (1), and detecting and replacing the activated carbon in the activated carbon filter box (7); S3, purification operation, by controlling the negative pressure exhaust fan to operate, extracting the gas from the purification box (1), so that the waste gas flows from the air inlet (2) into the purification box (1) under the action of negative pressure, and purifies and filters the waste gas through the activated carbon in the activated carbon filter box (7); S4, exhaust gas discharge: the exhaust gas filtered by the activated carbon filter box (7) moves toward the air outlet (3) under the action of the negative pressure exhaust fan and is discharged from the purification box (1) to complete the purification and filtration of the exhaust gas.

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