Fireproof plate production workshop air purification device

Abstract

The application belongs to the technical field of environmental pollution treatment, and particularly relates to a fireproof plate production workshop air purification device, which comprises a device main body, an air inlet and outlet system, filter bags, a fixing support, a dust cleaning system, a dust unloading valve, an electric control and a safety system, further comprises a clean air chamber, the clean air chamber is installed above the fixing support and corresponds to the filter bags, and activated carbon is installed in the clean air chamber, a ventilation hole corresponding to the activated carbon is arranged in the clean air chamber, and a detection sensor is arranged in the clean air chamber; with the waste gas moving to the upper half of the filter baffle, the pore size of the upper half of the filter baffle gradually decreases, the flow space of the waste gas is reduced, the flow velocity is increased under the condition that the flow pressure is unchanged, the spiral ascending rate of the waste gas in the filter baffle is accelerated, the centrifugal force of the waste gas is increased, the removal effect of impurities in the waste gas is improved, the large-particle impurities adhered by the filter bags during filtration are reduced, the risk of the filter bags being abraded by the large-particle impurities is reduced, and the protection of the filter bags is improved.

Description

Technical Field

[0001] This invention belongs to the field of environmental pollution control technology, specifically an air purification device for a fireproof board production workshop. Background Technology

[0002] Fireproof boards are non-combustible decorative boards made primarily from magnesium oxide, magnesium chloride, glass fiber, wood flour, and inorganic fillers. The process involves batching, mixing, spreading, molding, drying, sanding, cutting, and trimming. They are widely used in construction, decoration, furniture, and fireproof partitions. During production, the batching, feeding, mixing, sanding, cutting, and drying processes generate a large amount of inorganic dust. Simultaneously, during the board curing, drying, and adhesive heating processes, organic waste gas, odors, and small amounts of volatile organic compounds are released. Direct emissions would cause dust pollution in the workshop, air pollution, and harm to the health of operators. Currently, the combined purification process for fireproof board workshops often employs a series of baghouse dust collectors and activated carbon adsorption devices. This involves first removing dust using a baghouse dust collector, and then removing organic waste gas and odors through activated carbon adsorption.

[0003] However, during use, the dust from the fireproof board contains hygroscopic components such as magnesium oxide and magnesium chloride. Furthermore, the high humidity and temperature in the workshop cause the dust to easily absorb moisture, adhere, and clump onto the surface of the filter bags. Conventional pulse cleaning methods struggle to completely remove the dust, leading to rapid clogging of the filter bags, a sharp increase in system resistance, a decrease in airflow, a significant reduction in dust removal efficiency, frequent filter bag replacements, and high operating costs. Moreover, the sticky dust easily forms agglomerated particles, and some fine dust penetrates the filter bags into the downstream activated carbon unit, depositing in the pores and interparticle spaces of the activated carbon. This causes carbon layer blockage, airflow short-circuiting, a sharp drop in ventilation, and a rapid decrease in the actual adsorption area of ​​the activated carbon, resulting in a significant deterioration in purification effect that cannot be restored by simple backflushing. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes an air purification device for a fireproof board production workshop.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: This invention proposes an air purification device for a fireproof board production workshop, including a main body, an air inlet and outlet system, filter bags, a fixing bracket, a dust removal system, a dust discharge valve, and an electrical control and safety system; it also includes: The device includes a purification chamber mounted above a fixed support and corresponding to a filter bag. Activated carbon is installed inside the purification chamber, which also has ventilation holes corresponding to the activated carbon. A detection sensor is also located inside the purification chamber. A filter baffle, flared in shape and expanding towards the bottom of the device body, is located at the top center of the filter baffle, corresponding to the filter bag. A spiral-shaped baffle strip is located on the inner wall of the filter baffle near the top. The air inlet pipe of the air inlet / outlet system is tangentially directed towards the bottom inner wall of the filter baffle. A rotating rod is rotatably connected to the center of the filter baffle, and this rotating rod is connected to a rotating motor installed inside the device body. The cleaning rod is slidably connected to the rotating rod by a spring. The cleaning rod slides vertically and one end contacts the stop bar. A top rod is rotatably connected to the top of the rotating rod. The bottom of the top rod contacts the top of the cleaning rod. A lifting frame is provided at the top of the top rod. A cleaning brush is provided on the lifting frame. The cleaning brush contacts the outside of the filter bag.

[0006] Preferably, a telescopic rod is slidably connected to the fixed bracket via a spring. The telescopic rod is distributed in a ring and slidably connected to a telescopic ring via a spring. The inner side of the filter bag is fixed to the telescopic ring. A locking block is provided at the bottom of the telescopic rod, and the bottom of the filter bag is fixed to the telescopic rod via the locking block. The top of the top rod contacts the bottom of the locking block. A sealing plate is slidably connected to the fixed bracket. The sealing plate is connected to an electric push rod inside the main body of the device. A temperature and humidity sensor is provided on the sealing plate. A vibration groove is provided on the telescopic rod, and a vibration block is provided on the telescopic ring and extends into the vibration groove.

[0007] Preferably, a vibrating inner rod is slidably connected to the telescopic ring via a spring. One end of the vibrating inner rod is arc-shaped and contacts the filter bag. A toggle block is provided on the telescopic rod, and the other end of the vibrating inner rod contacts the toggle block.

[0008] Preferably, the lifting frame is provided with a vibrating outer rod, and part of the cleaning brush is installed on the vibrating outer rod; the bottom of the fixed bracket is provided with a guide groove, which is set in a vertical spiral, and the vibrating outer rod is rotatably connected to the lifting frame through a torsion spring.

[0009] Preferably, the top of the vibrating outer rod is slidably connected to a vibrating secondary rod via a spring, and the top of the vibrating secondary rod extends into the guide groove.

[0010] Preferably, the vibrating auxiliary rod is provided with a swing plate on the side away from the vibrating outer rod. The swing plate is rotatably connected to the vibrating auxiliary rod through a torsion spring. One end of the swing plate is close to the filter bag, and the other end contacts a protrusion provided on the vibrating outer rod.

[0011] Preferably, the oscillating plate is tree-fork shaped, and a rubber pad is fitted onto the outer surface of the oscillating plate near the filter bag.

[0012] Preferably, the middle part of the swing plate and the end near the filter bag are hinged by a torsion spring, and the surface of the swing plate near the filter bag is arc-shaped, with the arc-shaped surface of the swing plate contacting the telescopic ring through the filter bag.

[0013] Preferably, the top of the vibration rod is provided with a ball bearing, and the inner wall of the guide groove is provided with a serrated groove, in which the roller rolls.

[0014] Preferably, the bottom of the lifting frame is provided with a storage net containing a desiccant, and the storage net is close to the filter bag.

[0015] The beneficial effects of this invention are as follows: 1. The air purification device for a fireproof board production workshop described in this invention, as the exhaust gas moves to the upper part of the filter baffle, the aperture of the upper part of the filter baffle gradually decreases, the flow space of the exhaust gas decreases, and the flow velocity increases under the condition of constant flow pressure, which makes the spiral ascent rate of the exhaust gas in the filter baffle faster, increases the centrifugal force of the exhaust gas, improves the removal effect of impurities in the exhaust gas, reduces the large particulate impurities attached to the filter bag, reduces the risk of the filter bag being worn by large particulate impurities, and improves the protection of the filter bag.

[0016] 2. The air purification device for a fireproof board production workshop described in this invention, after impurities come into contact with the filter baffle, is blocked by the spiral baffle strips, preventing the impurities from being blown away from the inner wall of the filter baffle. This allows the impurities to be collected between the baffle strips and the filter baffle, improving the impurity collection effect and preventing secondary pollution. The baffle strips also guide the exhaust gas, directing it upwards in a spiral motion, further improving the centrifugal effect of the exhaust gas, thereby improving the purification effect of the exhaust gas and reducing its pollution impact on the atmospheric environment. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is an internal schematic diagram of the present invention; Figure 3 It is a 3D view of the filter baffle; Figure 4 It is a 3D view of the retaining strip; Figure 5 It is a 3D view of a single filter bag; Figure 6 yes Figure 5 A sectional view; Figure 7 This is a schematic diagram of the filter bag unfolding. Figure 8 This is a schematic diagram of the filter bag shrinking.

[0019] In the diagram: 1. Main body of the device; 11. Filter bag; 12. Fixed bracket; 13. Clean air chamber; 14. Filter baffle; 15. Baffle strip; 16. Rotating rod; 17. Rotating motor; 18. Cleaning rod; 19. Top rod; 2. Lifting frame; 21. Cleaning brush; 22. Telescopic rod; 23. Telescopic ring; 24. Locking block; 25. Sealing plate; 26. Electric push rod; 27. Vibration groove; 28. Vibration block; 29. ​​Vibration inner rod; 30. Actuating block; 31. Vibration outer rod; 32. Guide groove; 33. Vibration auxiliary rod; 34. Swing plate; 35. Protrusion; 36. Rubber pad; 37. Ball bearing; 38. Groove; 39. Storage net. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: To effectively solve the above problems, see the attached diagram in the instruction manual. Figures 1-8 As shown, an air purification device for a fireproof board production workshop includes a main body 1, an air inlet and outlet system, a filter bag 11, a fixed bracket 12, a dust removal system, a dust discharge valve, and an electrical control and safety system. The inlet and outlet air system is used for the flow of polluted waste gas. The inlet is located at the bottom of the main body 1 of the device, and the outlet is located at the top of the main body 1 of the device. The filter bag 11 is used to filter dust and impurities in the polluted waste gas. The fixing bracket 12 is used to fix the filter bag 11. The dust removal system is a conventional system used for cleaning the filter bag 11 with reverse pulse jet. The ash discharge valve is used to cooperate with the dust removal system to discharge and collect the collected impurities. When the dust removal system is working, the ash discharge valve is open, and the dust removal system uses jet jets to blow the impurities out of the main body 1 and collect them. When the dust removal system is not working, the ash discharge valve is closed to maintain the airtightness of the main body 1 and to cooperate with its normal operation in purifying polluted waste gas. It also includes: A purification chamber 13 is installed above the fixed bracket 12 and corresponds to the filter bag 11. Activated carbon is installed inside the purification chamber 13, and ventilation holes corresponding to the activated carbon are provided inside the purification chamber 13. A detection sensor is also provided inside the purification chamber 13. A filter baffle 14 is provided at the bottom of the main body 1. The filter baffle 14 is funnel-shaped and expands towards the bottom of the main body 1. The top center of the filter baffle 14 corresponds to the filter bag 11. A baffle strip 15 is provided on the inner wall of the filter baffle 14 near the top. The baffle strip 15 is spiral-shaped. The air inlet pipe of the air inlet and outlet system is tangentially directed towards the bottom inner wall of the filter baffle 14. A rotating rod 16 is rotatably connected to the center of the filter baffle 14. The rotating rod 16 is connected to a rotating motor 17 installed inside the main body 1 of the device. The cleaning rod 18 is slidably connected to the rotating rod 16 by a spring. The cleaning rod 18 slides vertically and one end contacts the baffle 15. The top of the rotating rod 16 is rotatably connected to the top rod 19. The bottom of the top rod 19 contacts the top of the cleaning rod 18. The top of the top rod 19 is provided with a lifting frame 2. The lifting frame 2 is provided with a cleaning brush 21. The cleaning brush 21 contacts the outside of the filter bag 11. The waste gas generated during the production of fireproof boards mainly includes inorganic dust, organic waste gas generated by the heating of adhesives, formaldehyde, phenols, odorous gases, water vapor, etc. The high-efficiency activated carbon installed in the air purification chamber 13 has a well-developed pore structure and a huge specific surface area. Relying on the dual action of physical adsorption and chemical adsorption, it adsorbs gaseous molecules, odor molecules, and small organic molecules in the waste gas into its pores, thereby achieving waste gas purification. The detection sensors include a gas sensor for detecting total volatile organic compounds (TVOCs) released from adhesives, resins, and curing agents when heated; and a formaldehyde sensor for detecting typical pollutants such as formaldehyde, phenols, and aldehydes released during the production of fireproof boards. The lifting frame 2 is grid-shaped and will not affect the flow of exhaust gas within the main body 1 of the device.

[0022] Specific workflow: When the exhaust gas enters the bottom of the main body 1 of the device, the air inlet pipe of the air inlet and outlet system sprays the exhaust gas tangentially towards the inner wall of the arc-shaped filter baffle 14, causing the exhaust gas in the filter baffle 14 to rise in a spiral shape. The rotation of the exhaust gas generates centrifugal force, which throws some large particles such as colloidal substances onto the inner wall of the filter baffle 14, reducing the impurity content in the exhaust gas. As the exhaust gas moves to the upper part of the filter baffle 14, the aperture of the upper part of the filter baffle 14 gradually decreases, the flow space of the exhaust gas decreases, and the flow velocity increases under the condition of constant flow pressure, which makes the spiral rise rate of the exhaust gas in the filter baffle 14 faster, increases the centrifugal force of the exhaust gas, improves the removal effect of impurities in the exhaust gas, reduces the large particles of impurities attached to the filter bag 11, reduces the risk of the filter bag 11 being worn by large particles of impurities, and improves the protection of the filter bag 11. Furthermore, after impurities come into contact with the filter baffle 14, the spiral baffle 15 blocks the impurities, preventing them from being blown away from the inner wall of the filter baffle 14. This allows the impurities to be collected between the baffle 15 and the filter baffle 14, improving the impurity collection effect and preventing secondary pollution. The baffle 15 also guides the exhaust gas, directing it to rise in a spiral, further improving the centrifugal effect of the exhaust gas, thereby improving the purification effect of the exhaust gas and reducing its pollution impact on the atmospheric environment. Furthermore, during the cleaning of the main body 1 of the device, the rotating motor 17 drives the cleaning rod 18 to rotate through the rotating rod 16. One end of the cleaning rod 18 slides on the baffle 15. The cleaning rod 18 rises along the rotating rod 16 under the influence of the baffle 15. During the rise of the cleaning rod 18, the impurities on the baffle 15 are scraped. The collected impurities are moved out of the filter baffle 14 by the scraping and blowing action. At this time, the ash discharge valve is opened. The air carrying the cleaned impurities does not rise to contact the filter bag 11, but flows to the ash discharge valve and is discharged from the main body 1 of the device, thus completing the cleaning of the filter baffle 14 and other components and improving the ease of use. Furthermore, workers can also create annular grooves 38 or install collection devices on the filter baffle 14. When impurities such as gels pass through the grooves 38 on the filter baffle 14, they are scraped into the grooves 38 by the cleaning rod 18, completing the online impurity collection work during the waste gas treatment process, improving the continuous waste gas treatment efficiency, and thus improving the waste gas purification efficiency of the workshop. After the cleaning rod 18 rotates from one end of the baffle 15 at the lower end to the other end at the higher end, it is no longer guided and restricted by the baffle 15. The cleaning rod 18 is lowered and reset by the influence of the spring. The cleaning rod 18 resets to the lower end of the baffle 15, ready for the next movement. During the reset process, the cleaning rod 18 moves to the limited position and generates vibration, shaking off the impurities it is contaminated with, thus improving its cleanliness. When the cleaning rod 18 rises, it drives the top rod 19 to rise, the top rod 19 drives the lifting frame 2 to rise, the lifting frame 2 drives the cleaning brush 21 to rise, and the cleaning brush 21 moves from the bottom to the top of the filter bag 11 to clean and remove dust, removing any sticky substances and dust that may adhere to the surface of the filter bag 11, improving the cleanliness of the filter bag 11, maintaining the filtration capacity of the filter bag 11, and thus improving the efficiency of exhaust gas purification. After passing through filter baffle 14, the exhaust gas removes most of the large particles such as magnesium oxide dust, wood dust, and filler dust, preventing dust from clogging the pores of the activated carbon. Then, the exhaust gas passes through filter bag 11 to remove the remaining fine impurities, completing the pretreatment. The pretreated clean exhaust gas enters the activated carbon adsorption device and passes evenly through the activated carbon layer. Organic gases, odor molecules, and harmful volatile substances in the exhaust gas are adsorbed into the microporous structure as they flow across the surface of the activated carbon. The purified clean air is discharged through a fan, achieving emission standards and avoiding atmospheric pollution. During the rainy season, the exhaust gas contains a small amount of water vapor. The water vapor comes into contact with the filter baffle 14 along with the exhaust gas and combines with the dust and other impurities on the filter baffle 14. On the one hand, the impurities are moistened and agglomerated by the water vapor, preventing the collected impurities from scattering again. On the other hand, the water vapor in the exhaust gas is removed by the moisture absorption of the dust and impurities, preventing the filter bag 11 from coming into contact with too much water vapor, which would cause its surface to become wet and affect the filtration effect.

[0023] Example 2: Based on Embodiment 1, a telescopic rod 22 is slidably connected to the fixed bracket 12 via a spring. The telescopic rod 22 is arranged in a ring and a telescopic ring 23 is slidably connected to the telescopic rod 22 via a spring. The inner side of the filter bag 11 is fixed to the telescopic ring 23. A locking block 24 is provided at the bottom of the telescopic rod 22. The bottom of the filter bag 11 is fixed to the telescopic rod 22 via the locking block 24. The top of the top rod 19 contacts the bottom of the locking block 24. A sealing plate 25 is slidably connected to the fixed bracket 12. The sealing plate 25 is connected to the electric push rod 26 in the main body 1 of the device. A temperature and humidity sensor is provided on the sealing plate 25. A vibration groove 27 is provided on the telescopic rod 22. A vibration block 28 is provided on the telescopic ring 23 and extends into the vibration groove 27. The telescopic rings 23 are evenly arranged vertically along the telescopic rods 22, which are conventional rods with telescopic functions. The temperature and humidity sensors are used to detect the temperature and humidity of the gas filtered by the filter bag 11, so as to avoid the exhaust gas being too hot or too humid, which would affect the filtration effect and the purification effect of the activated carbon. The temperature and humidity sensors are located inside the filter bag 11, so as to avoid the temperature and humidity sensors being in a dusty and harsh environment, thereby improving the detection accuracy. The locking block 24 is used to fix the filter bag 11 on the telescopic rings 23, so as to prevent the telescopic rings 23 from causing the filter bag 11 to contract and expand, which would lead to misalignment. It can also act as a wear-resistant medium to prevent the top rod 19 from directly contacting the filter bag 11 and causing wear. The telescopic ring 23 is slidably connected to a vibrating inner rod 29 by a spring. One end of the vibrating inner rod 29 is arc-shaped and contacts the filter bag 11. The telescopic rod 22 is provided with a toggle block 3, and the other end of the vibrating inner rod 29 contacts the toggle block 3. The lifting frame 2 is provided with a vibrating outer rod 31, and some cleaning brushes 21 are installed on the vibrating outer rod 31; the bottom of the fixed bracket 12 is provided with a guide groove 32, which is set in a vertical spiral, and the vibrating outer rod 31 is rotatably connected to the lifting frame 2 through a torsion spring; The top of the vibrating outer rod 31 is slidably connected to the vibrating secondary rod 33 by a spring, and the top of the vibrating secondary rod 33 extends into the guide groove 32. The vibrating auxiliary rod 33 is provided with a swing plate 34 on the side away from the vibrating outer rod 31. The swing plate 34 is rotatably connected to the vibrating auxiliary rod 33 by a torsion spring. One end of the swing plate 34 is close to the filter bag 11, and the other end contacts the protrusion 35 provided on the vibrating outer rod 31.

[0024] Specific workflow: The top rod 19 rises and contacts the bottom of the locking block 24. The top rod 19 drives the bottom of the telescopic ring 23 to rise through the locking block 24. The telescopic ring 23 drives the telescopic rod 22 and the filter bag 11 to contract. The top rod 19 descends and drives the filter bag 11 to unfold through the telescopic ring 23. The filter bag 11 slowly contracts and unfolds alternately to achieve the effect of shaking the filter bag 11. Some of the plated impurities on the filter bag 11 fall off with the dust during the shaking process. The cleanliness of the filter bag 11 is improved in a gentle way. While avoiding wear on the filter bag 11, the filtration effect of the exhaust gas is improved, thereby improving the adsorption and purification efficiency of the activated carbon. Furthermore, before the filter bag 11 shrinks, the worker can control the electric push rod 26 to move the sealing plate 25 to block the fixed bracket 12. At this time, the filter bag 11 contains filtered air. During the shrinking process, the clean air inside the filter bag 11 is compressed and passes through the filter bag 11 in the opposite direction to remove dust and impurities from the surface of the filter bag 11. Compared with pulse jet cleaning, it is gentler and more convenient for workers to use this method for daily cleaning, reducing the occurrence of excessive pulse jet cleaning that could damage the filter bag 11. Furthermore, when the telescopic rings 23 approach and contract, the area of ​​the filter bag 11 fixed by the telescopic rings 23 is small, while the area of ​​the filter bag 11 not fixed between the telescopic rings 23 is large. This part of the filter bag 11 bends freely as it contracts, and the bending process peels off the hardened impurities, improving the cleanliness of the filter bag 11 surface. In addition, when the top rod 19 moves away from the locking block 24, the top rod 19 descends from the high point of the baffle 15 to the low point. At this time, it does not contact the locking block 24, and the telescopic rod 22 and the telescopic rings 23 are quickly reset by the spring. The inertia generated by the reset causes the filter bag 11 to shake, shaking off the impurities on the surface of the filter bag 11 and improving the cleaning effect. When the filter bag 11 unfolds and resets, the electric push rod 26 drives the sealing plate 25 to move and reset, so that when the filter bag 11 unfolds and resets, clean air is drawn from the upper layer of the fixed bracket 12, instead of drawing unfiltered waste gas from the lower layer. Furthermore, when the top rod 19 drives the filter bag 11 to rise and retract, the lifting frame 2 also drives the cleaning brush 21 to move, so as to brush away and clean the impurities that have peeled off due to bending on the surface of the filter bag 11 in time, so as to avoid the residue of impurities that have not been completely peeled off on the filter bag 11 and improve the cleaning effect; it can also remove the hardened impurities in time when the filter bag 11 retracts, so as to avoid the filter bag 11 being affected by the hardened impurities and causing wear when it retracts. When the telescopic rings 23 approach each other, they rise and move closer together, while the telescopic rod 22 retracts. This causes a misalignment between the telescopic rings 23 and the telescopic rod 22. The telescopic rings 23 drive the vibrating block 28 to extend into the vibration groove 27 and then move out. The vibrating block 28 rotates slightly and repeatedly around the axis of the filter bag 11. The vibrating block 28 drives the filter bag 11 to rotate axially by a small amplitude once through the telescopic rings 23, which removes impurities from the filter bag 11 and causes short-frequency vibration, thereby improving the cleaning effect of impurities, thus improving the cleanliness of the filter bag 11, and further improving the filtration effect of exhaust gas and reducing the pollution of exhaust gas to the atmospheric environment. When the telescopic ring 23 and the telescopic rod 22 move out of alignment, the telescopic ring 23 drives the vibrating inner rod 29 to contact the actuating block 3. The vibrating inner rod 29 is squeezed away from the filter bag 11 by the actuating block 3 until the actuating inner rod passes the actuating block 3 with the telescopic ring 23. The vibrating inner rod 29 slides back to its original position due to the influence of the spring. When the vibrating inner rod 29 returns to its original position, it generates reciprocating vibration. The vibrating inner rod 29 drives the unfixed filter bag 11 to vibrate back and forth, improving the vibration effect of the filter bag 11, shaking off the clumps of impurities, thereby improving the cleanliness of the filter bag 11. The lifting frame 2 rises, causing the outer vibrating rod 31 to rise. The outer vibrating rod 31 causes the top of the vibrating auxiliary rod 33 to contact the inner wall of the guide groove 32. Since the guide groove 32 is spirally arranged and the vibrating auxiliary rod 33 and the outer vibrating rod 31 are slidably connected by a spring, the outer vibrating rod 31 and the vibrating auxiliary rod 33 rotate under the influence of the guide, and the outer vibrating rod 31 and the vibrating auxiliary rod 33 slide in a staggered manner. The outer vibrating rod 31 drives the cleaning brush 21 to sweep the surface of the filter bag 11 around, and laterally peels off the impurities on the filter bag 11, improving the cleanliness of the filter bag 11. Furthermore, the top of the vibrating auxiliary rod 33 is always embedded in the guide groove 32, providing circumferential positioning and guiding constraints for the lifting frame 2, the vibrating outer rod 31 and the cleaning brush 21, preventing the cleaning brush 21 from swaying, shaking or scraping the inner wall of the filter bag 11 during the lifting process, ensuring the stability of the cleaning motion trajectory, improving the cleaning uniformity of the filter bag 11, and reducing the risk of wear on the filter bag 11. When the vibrating outer rod 31 and the vibrating secondary rod 33 intersect each other, the vibrating secondary rod 33 drives the swing plate 34 to move past the protrusion 35, so that the swing plate 34 is squeezed away from the filter bag 11 by the protrusion 35 and close to the filter bag 11 by the torsion spring. Under the combined action of the torsion spring and the protrusion 35, the swing plate 34 periodically opens and rebounds to beat the outer wall of the filter bag 11, forming a flexible beating to clean the filter bag 11, further shaking off the clumps of dust that the cleaning brush 21 has not completely peeled off, realizing the triple cleaning of brushing, vibration and beating to improve the cleaning effect; during the rotation and lifting process of the vibrating secondary rod 33 and the swing plate 34, they will cause disturbance to the airflow around the filter bag 11, so that the dust that has been swept away will quickly leave the filter bag 11 area and settle downwards, avoiding the dust from being suspended near the filter bag 11 and causing secondary adsorption, improving the cleanliness of the filter bag 11, thereby improving the purification efficiency of the exhaust gas; In addition, workers can also install annular baffles on the outside of the vibrating outer rod 31 so that when each filter bag 11 is being cleaned, the baffles can separate the filter bags 11 from each other and prevent cross-contamination.

[0025] Example 3: Based on Embodiment 2, the swing plate 34 is tree-fork shaped, and a rubber pad 36 is fitted on the outer surface of the swing plate 34 near the filter bag 11. The middle part of the swing plate 34 and the end near the filter bag 11 are hinged by a torsion spring, and the surface of the swing plate 34 near the filter bag 11 is arc-shaped. The arc-shaped surface of the swing plate 34 contacts the telescopic ring 23 through the filter bag 11.

[0026] Specific working process: The swing plate 34 is set in a tree fork shape, and a rubber pad 36 is sleeved near the outer surface of the filter bag 11. On the one hand, the tree fork structure can increase the contact area with the filter bag 11, and can simultaneously perform flexible tapping on multiple parts of the filter bag 11, expand the dust removal range, and improve the removal efficiency of impurities on the surface of the filter bag 11; on the other hand, the rubber pad 36 is soft in texture, which can avoid the wear and tear of the filter bag 11 caused by rigid contact when tapping the filter bag 11. It is especially suitable for dust conditions with strong adhesion and high hardness in fireproof board workshops, and effectively protects the filter bag 11 while strengthening dust removal. The middle part of the swing plate 34 is hinged to the end near the filter bag 11 by a torsion spring, and the surface near the filter bag 11 is arc-shaped. The arc-shaped surface flexibly contacts the filter bag 11 and the telescopic ring 23, so that the swing plate 34 can adaptively conform to the curvature of the outer wall of the filter bag 11 during the rotation and rise with the vibration auxiliary rod 33, and swing adaptively with the deformation of the filter bag 11 as it contracts and expands, avoiding jamming. The torsion spring hinge structure enables the swing plate 34 to reciprocate and bounce back. Even when squeezed, it can return to its original position and swing close to the filter bag 11 after passing over it, further enhancing the vibration and dust loosening effect on the filter bag 11, loosening and removing the gelatinous impurities and dust layer that are caked on the surface of the filter bag 11, and improving the cleanliness of the filter bag 11.

[0027] Example 4: Based on Embodiment 3, the top of the vibration rod 33 is provided with a ball 37, and the inner wall of the guide groove 32 is provided with a serrated groove 38, in which the roller rolls. The bottom of the lifting frame 2 is provided with a storage net 39, which contains a desiccant and is located close to the filter bag 11.

[0028] Specific working process: The ball bearing 37 rolls in the groove 38, which reduces the frictional resistance between the vibrating auxiliary rod 33 and the guide groove 32, making the lifting frame 2 and the vibrating outer rod 31 rise and rotate more smoothly and avoid jamming; at the same time, the ball bearing 37 generates continuous, high-frequency micro-vibration when rolling in the serrated groove 38. This vibration is transmitted to the vibrating outer rod 31 and the cleaning brush 21 through the vibrating auxiliary rod 33, so that the cleaning brush 21 has a high-frequency vibration effect while rotating and cleaning, which performs multiple cleaning of stubborn hardened impurities on the surface of the filter bag 11 by vibration, loosening and brushing, greatly improving the dust removal effect and improving the cleanliness of the filter bag 11; By setting up a storage mesh 39, in which a desiccant is placed, and by positioning the storage mesh 39 close to the filter bag 11, the exhaust gas filtered by the filter bag 11 can be dried in real time, reducing the humidity of the exhaust gas. This prevents the filter bag 11 from becoming clogged and dust from absorbing moisture and caking due to high humidity exhaust gas in the fireproof board production workshop. At the same time, it prevents wet exhaust gas from entering the upper clean air chamber 13 and causing the activated carbon to become damp and lose its adsorption capacity, ensuring that the activated carbon is in a dry and efficient adsorption state for a long time. The mesh structure of the storage mesh 39 not only ensures smooth airflow but also limits and fixes the desiccant, preventing it from scattering. This achieves online drying and continuous dehumidification, further improving the stability and service life of the entire purification device.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air purification device for a fireproof board production workshop, comprising a main body (1), an air inlet and outlet system, filter bags (11), a fixed bracket (12), a dust removal system, a dust discharge valve, and an electrical control and safety system; characterized in that, Also includes: A clean air chamber (13) is installed above a fixed bracket (12) and corresponds to a filter bag (11). Activated carbon is installed inside the clean air chamber (13). Ventilation holes are provided inside the clean air chamber (13) corresponding to the activated carbon. A detection sensor is provided inside the clean air chamber (13). A filter baffle (14) is provided at the bottom of the main body (1). The filter baffle (14) is trumpet-shaped and expands towards the bottom of the main body (1). The center of the top of the filter baffle (14) corresponds to the filter bag (11). A baffle strip (15) is provided on the inner wall of the filter baffle (14) near the top. The baffle strip (15) is spiral-shaped. The air inlet pipe of the air inlet and outlet system is tangentially directed towards the inner wall of the bottom of the filter baffle (14). A rotating rod (16) is rotatably connected to the center of the filter baffle (14). The rotating rod (16) is connected to a rotating motor (17) installed inside the main body (1). A cleaning rod (18) is slidably connected to a rotating rod (16) by a spring. The cleaning rod (18) slides vertically and one end contacts a stop bar (15). A top rod (19) is rotatably connected to the top of the rotating rod (16). The bottom of the top rod (19) contacts the top of the cleaning rod (18). A lifting frame (2) is provided on the top of the top rod (19). A cleaning brush (21) is provided on the lifting frame (2). The cleaning brush (21) contacts the outside of the filter bag (11).

2. The air purification device for a fireproof board production workshop according to claim 1, characterized in that: The fixed bracket (12) is slidably connected to a telescopic rod (22) by a spring. The telescopic rod (22) is distributed in a ring and is slidably connected to a telescopic ring (23) by a spring. The inner side of the filter bag (11) is fixed to the telescopic ring (23). The bottom of the telescopic rod (22) is provided with a locking block (24). The bottom of the filter bag (11) is fixed to the telescopic rod (22) by the locking block (24). The top of the top rod (19) contacts the bottom of the locking block (24). The fixed bracket (12) is slidably connected to a sealing plate (25). The sealing plate (25) is connected to an electric push rod (26) in the main body (1) of the device. The sealing plate (25) is provided with a temperature and humidity sensor. The telescopic rod (22) is provided with a vibration groove (27). The telescopic ring (23) is provided with a vibration block (28) that extends into the vibration groove (27).

3. The air purification device for a fireproof board production workshop according to claim 2, characterized in that: The telescopic ring (23) is slidably connected to the vibrating inner rod (29) by a spring. One end of the vibrating inner rod (29) is arc-shaped and contacts the filter bag (11). The telescopic rod (22) is provided with a toggle block (3), and the other end of the vibrating inner rod (29) contacts the toggle block (3).

4. The air purification device for a fireproof board production workshop according to claim 3, characterized in that: The lifting frame (2) is provided with a vibrating outer rod (31), and a part of the cleaning brush (21) is installed on the vibrating outer rod (31); the bottom of the fixed bracket (12) is provided with a guide groove (32), the guide groove (32) is set in a vertical spiral, and the vibrating outer rod (31) is rotatably connected to the lifting frame (2) through a torsion spring.

5. The air purification device for a fireproof board production workshop according to claim 4, characterized in that: The top of the vibrating outer rod (31) is slidably connected to the vibrating secondary rod (33) by a spring, and the top of the vibrating secondary rod (33) extends into the guide groove (32).

6. The air purification device for a fireproof board production workshop according to claim 5, characterized in that: The vibrating auxiliary rod (33) is provided with a swing plate (34) on the side away from the vibrating outer rod (31). The swing plate (34) is rotatably connected to the vibrating auxiliary rod (33) by a torsion spring. One end of the swing plate (34) is close to the filter bag (11), and the other end contacts the protrusion (35) provided on the vibrating outer rod (31).

7. The air purification device for a fireproof board production workshop according to claim 6, characterized in that: The swing plate (34) is tree-fork shaped, and a rubber pad (36) is fitted on the outer surface of the swing plate (34) near the filter bag (11).

8. The air purification device for a fireproof board production workshop according to claim 7, characterized in that: The middle part of the swing plate (34) and the end near the filter bag (11) are hinged by a torsion spring, and the surface of the swing plate (34) near the filter bag (11) is arc-shaped. The arc-shaped surface of the swing plate (34) contacts the telescopic ring (23) through the filter bag (11).

9. An air purification device for a fireproof board production workshop according to claim 8, characterized in that: The top of the vibration rod (33) is provided with a ball (37), and the inner wall of the guide groove (32) is provided with a serrated groove (38), in which the roller rolls.

10. An air purification device for a fireproof board production workshop according to claim 9, characterized in that: The bottom of the lifting frame (2) is provided with a storage net (39), which contains a desiccant and is located close to the filter bag (11).

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