High humidity exhaust gas rotary centrifugal dust removal device

Abstract

The utility model relates to high humidity tail gas dust removal technical field discloses a kind of high humidity tail gas rotary centrifugal dust removal device, including dust removal cylinder, filter bag, rotating mechanism and cleaning mechanism;Dust removal cavity is equipped in dust removal cylinder, and inlet pipe and exhaust pipe are equipped in dust removal cylinder with dust removal cavity intercommunication;Filter bag is rotationally arranged in dust removal cavity, and cut off dust removal cavity and exhaust pipe, and purification cavity is equipped in filter bag with exhaust pipe intercommunication, filter bag is used to filter tail gas, rotating mechanism is arranged on dust removal cylinder, and is transmission connection with filter bag, rotating mechanism is used to drive filter bag rotation, to throw water on filter bag to the inner wall of dust removal cylinder;Cleaning mechanism is arranged on dust removal cylinder, and is used to clean dust and slurry on filter bag.The utility model can solve how to improve the problem of the air permeability and dust removal efficiency of filter bag, and prolong the service life of filter bag.

Description

Technical Field

[0001] This utility model relates to the field of high humidity exhaust gas dust removal technology, specifically to a high humidity exhaust gas rotary centrifugal dust removal device. Background Technology

[0002] In many areas of industrial production, exhaust gas treatment has always been a crucial link between environmental protection and production efficiency. Industries such as sludge drying and food fermentation generate large amounts of high-humidity exhaust gas during production, posing significant challenges to existing exhaust gas treatment technologies.

[0003] Taking the sludge biological drying process as an example, the exhaust gas generated during this process is characterized by high humidity (60%–100% moisture content), high temperature (50–70℃), and high dust concentration (200–500 mg / m³). Currently, baghouse dust collectors are one of the most commonly used devices in the field of exhaust gas dust treatment. Due to their simple structure and high dust removal efficiency, baghouse dust collectors occupy a certain position in conventional exhaust gas treatment. Their working principle is to intercept and adsorb dust in the exhaust gas through filter bags, thereby achieving gas-solid separation and purifying the exhaust gas. However, when baghouse dust collectors are used to treat high-humidity exhaust gas, their drawbacks gradually become apparent.

[0004] When high-humidity exhaust gas passes through the filter bags of a baghouse dust collector, the water vapor carried in the exhaust gas easily condenses into liquid water on the surface of the filter bags. This liquid water mixes with the dust already adsorbed on the filter bag surface, forming a mud-like adhesive layer. This adhesive layer is dense and highly viscous, quickly clogging the tiny pores of the filter bags. As the clogging worsens, the air permeability of the filter bags decreases sharply, leading to a significant increase in the pressure differential during equipment operation, often exceeding 2000 Pa. To maintain normal equipment operation, staff need to perform daily backflushing and dust removal of the filter bags. However, even with such frequent cleaning, the lifespan of the filter bags is still difficult to guarantee, typically requiring replacement in less than three months. Frequent replacement of filter bags and cleaning of sludge not only increases the labor intensity of staff but also leads to a significant increase in maintenance costs. According to statistics, the annual maintenance cost of a single baghouse dust collector treating high-humidity exhaust gas exceeds 50,000 yuan, which is undoubtedly a heavy burden for enterprises.

[0005] In summary, existing baghouse dust collectors have significant shortcomings in handling high-humidity exhaust gases and cannot meet the needs of actual production. Therefore, it is necessary to develop a dust collection device that can effectively handle high-humidity exhaust gases. Utility Model Content

[0006] (a) Technical problems to be solved This invention provides a high-humidity exhaust gas rotary centrifugal dust collector, which can at least solve the technical problem of how to improve the air permeability and dust removal efficiency of the filter bag and extend the service life of the filter bag.

[0007] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-humidity exhaust gas rotary centrifugal dust collector, comprising: The dust collector has a dust collection chamber inside, and an air inlet pipe and an exhaust pipe that communicate with the dust collection chamber on the dust collector. The filter bag and rotating mechanism are arranged in a rotatable manner within the dust collection chamber, which also blocks the dust collection chamber from the exhaust pipe. The filter bag has a purification chamber connected to the exhaust pipe. The filter bag is used to filter exhaust gas. The rotating mechanism is located on the dust collection cylinder and is connected to the filter bag in a drive mechanism. The rotating mechanism is used to drive the filter bag to rotate so that the water on the filter bag can be thrown onto the inner wall of the dust collection cylinder. The cleaning mechanism, located on the dust collector, is used to clean dust and sludge from the filter bags.

[0008] Further, the aforementioned filter bag includes a filter membrane, a first blocking block, and a second blocking block. The filter membrane has an annular rotating structure and two openings. The first blocking block and the second blocking block are respectively located at the two openings of the filter membrane to seal the filter membrane and form a purification chamber with the filter membrane. The second blocking block is located at the exhaust pipe opening and is used to block the dust removal chamber and the exhaust pipe. The second blocking block is provided with a vent hole for connecting the dust removal chamber and the exhaust pipe. The rotating mechanism includes a rotating shaft and a rotating shaft drive assembly. The rotating shaft is rotatably disposed inside the dust collector and is coaxially fixedly connected to the first block and the second block. The rotating shaft drive assembly is disposed on the dust collector, and the output end of the rotating shaft drive assembly is fixedly connected to the rotating shaft. The rotating shaft drive assembly is used to drive the rotating shaft to rotate, thereby driving the filter bag to rotate.

[0009] Further configuration: the aforementioned filter membrane includes a lower filter membrane, an upper filter membrane, and a connecting block. The connecting block is fixedly connected to the rotating shaft. The lower filter membrane and the upper filter membrane are coaxially distributed. The bottom end of the lower filter membrane is fixedly connected to the first blocking block, and the top end is fixedly connected to the connecting block. The bottom end of the upper filter membrane is fixedly connected to the connecting block, and the top end is fixedly connected to the second blocking block. The lower filter membrane has an inverted frustum-shaped annular rotating structure and is positioned opposite to the air intake pipe. The upper filter membrane has a frustum-shaped annular rotating structure.

[0010] Furthermore, the aforementioned filter membrane is made of hydrophobic PTFE-coated glass fiber.

[0011] In a further configuration, the aforementioned cleaning mechanism includes a flexible scraper and a scraper drive assembly. The scraper drive assembly is mounted on the dust collection cylinder and is connected to the flexible scraper via a transmission. The scraper drive assembly is used to drive the flexible scraper to move toward or away from the filter bag, so that the flexible scraper makes line contact or surface contact with the outer surface of the filter membrane.

[0012] Furthermore, the aforementioned filter membrane is configured with at least two flexible scrapers corresponding to it, and the length of the flexible scraper is not less than the outer surface length of the corresponding filter membrane.

[0013] In a further configuration, the aforementioned scraper drive assembly includes a pneumatic pump and a pneumatic telescopic rod. The pneumatic pump is mounted on the dust collection cylinder and connected to one end of the pneumatic telescopic rod. The other end of the pneumatic telescopic rod is connected to the flexible scraper. The pneumatic pump is used to drive the pneumatic telescopic rod to extend or retract, thereby causing the flexible scraper to move toward or away from the filter membrane.

[0014] Further configuration: the aforementioned exhaust pipe is located at the top of the dust collector, the air inlet pipe is located on the outer wall of the dust collector, a water collection space is formed between the air inlet pipe and the bottom surface inside the dust collector, and a drain outlet connected to the water collection space is provided at the bottom of the dust collector.

[0015] Furthermore, the inner wall of the aforementioned dust collector is provided with multiple guide channels evenly spaced. The guide channels have a serpentine rotating structure, and the bottom opening of the guide channels is located in the water collection space. The guide channels are used to guide the condensate water to slide down into the water collection space.

[0016] Furthermore, the aforementioned high-humidity exhaust gas rotary centrifugal dust collector also includes an ultrasonic atomizer. The ultrasonic atomizer is located at the bottom of the dust collector cylinder and is connected to the water collection space. The ultrasonic atomizer is used to atomize the condensate in the water collection space a second time and then spray it back into the sludge drying chamber.

[0017] (III) Beneficial Effects Compared with the prior art, the high humidity exhaust gas rotary centrifugal dust removal device provided by this utility model has the following beneficial effects: 1. In use of this utility model, firstly, the rotating mechanism is started. Then, the high-humidity exhaust gas is introduced into the dust removal chamber through the inlet pipe. After being filtered through the filter bag, the exhaust gas is discharged out of the exhaust pipe through the purification chamber. During the process of the high-humidity exhaust gas passing through the filter bag, the water vapor carried in the exhaust gas will condense into liquid water on the surface of the filter bag. At this time, due to the centrifugal force generated by the high-speed rotation of the filter bag driven by the rotating mechanism, the condensate on the filter bag is thrown onto the inner wall of the dust removal cylinder. This effectively reduces the possibility of the condensate mixing with the dust adsorbed on the filter bag to form mud, thereby clogging the filter bag. This effectively improves the air permeability and dust removal efficiency of the filter bag and extends the service life of the filter bag. It can be seen that this utility model achieves simultaneous and efficient removal of water vapor and dust through the centrifugal effect generated by rotating the filter bag, so that the thickness of the water film on the filter bag can be stably controlled within an extremely thin range of ≤0.1mm, while its air permeability can be maintained at 800~1000m³ / m²·h (in contrast, the air permeability of traditional static filter bags can only reach 50~100m³ / m²·h).

[0018] 2. During use, the cleaning mechanism of this invention can automatically remove dust and sludge from the filter bags, replacing manual labor. This further maintains the air permeability and dust removal efficiency of the filter bags, effectively reducing the labor intensity of workers and significantly extending the continuous operation cycle of the dust removal device to 6-12 months, greatly reducing maintenance costs. Even when treating high-humidity exhaust gases with a moisture content of 60%-100%, it still achieves a dust removal efficiency >93% and a filter bag lifespan ≥6 months. Therefore, this invention is particularly suitable for scenarios with stringent requirements for treating high-humidity exhaust gases, such as sludge drying and food fermentation, and has significant economic and environmental benefits. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the high-humidity exhaust gas rotary centrifugal dust collector in the embodiment; Figure 2 This is a cross-sectional view of the filter bag and rotating shaft in the embodiment.

[0020] Icon labels: 1. Dust collector cylinder; 11. Dust collection chamber; 12. Air inlet pipe; 13. Exhaust pipe; 14. Water collection space; 15. Sewage outlet; 16. Guide channel; 2. Filter bag; 21. Purification chamber; 22. Filter membrane; 221. Opening; 222. Lower filter membrane; 223. Upper filter membrane; 224. Connecting block; 23. First blocking block; 24. Second blocking block; 241. Vent hole; 242. Vent pipe; 3. Rotating mechanism; 31. Rotating shaft; 32. Rotating shaft drive assembly; 4. Cleaning mechanism; 41. Flexible scraper; 42. Scraper drive assembly; 421. Pneumatic pump; 422. Pneumatic telescopic rod; 5. Ultrasonic atomizer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This invention provides a high-humidity exhaust gas rotary centrifugal dust collector to solve the problem of how to improve the air permeability and dust removal efficiency of the filter bag 2 and extend the service life of the filter bag 2.

[0023] See Figure 1 As shown, Figure 1The image shows a cross-sectional view of the high-humidity exhaust gas rotary centrifugal dust collector in the embodiment. The high-humidity exhaust gas rotary centrifugal dust collector includes a dust collector 1, a filter bag 2, a rotating mechanism 3, and a cleaning mechanism 4.

[0024] The dust collector 1 has a dust collection chamber 11 inside. The dust collector 1 has an air inlet pipe 12 and an exhaust pipe 13 that communicate with the dust collection chamber 11.

[0025] The filter bag 2 is rotatably connected to the dust removal chamber 11 and cuts off the connection between the dust removal chamber 11 and the exhaust pipe 13. The filter bag 2 has a purification chamber 21 that communicates with the exhaust pipe 13, and the filter bag 2 is used to filter the exhaust gas.

[0026] The rotating mechanism 3 is mounted on the dust collector cylinder 1 and is connected to the filter bag 2 via a transmission mechanism. The rotating mechanism 3 is used to drive the filter bag 2 to rotate, so as to throw the water on the filter bag 2 onto the inner wall of the dust collector cylinder 1.

[0027] The cleaning mechanism 4 is installed on the dust collector 1 and is used to clean the dust and mud on the filter bag 2.

[0028] When using the high-humidity exhaust gas rotary centrifugal dust collector described above, firstly, start the rotating mechanism 3. Then, input the high-humidity exhaust gas into the dust collection chamber 11 through the inlet pipe 12, and the exhaust gas flows along... Figure 1 After being filtered through filter bag 2 in the direction of the middle arrow, the exhaust gas is discharged outside the exhaust pipe 13 through the purification chamber 21. During the process of high humidity exhaust gas passing through filter bag 2, the water vapor carried in the exhaust gas will condense into liquid water on the surface of filter bag 2. At this time, due to the centrifugal force generated by the high-speed rotation of filter bag 2 driven by rotating mechanism 3, the condensate on filter bag 2 is thrown onto the inner wall of dust collector 1. This effectively reduces the possibility of condensate mixing with dust adsorbed on filter bag 2 to form mud, thereby clogging filter bag 2. This effectively improves the air permeability and dust removal efficiency of filter bag 2 and extends the service life of filter bag 2.

[0029] As can be seen from the above usage process, compared with traditional bag dust collectors, this utility model has the following advantages: First, this invention achieves simultaneous and efficient removal of water vapor and dust through the centrifugal effect generated by rotating the filter bag 2, so that the thickness of the water film on the filter bag 2 can be stably controlled within an extremely thin range of ≤0.1mm, while its air permeability can be maintained at 800~1000m³ / m²·h (in contrast, the air permeability of the traditional static filter bag 2 can only reach 50~100m³ / m²·h).

[0030] Secondly, this invention, through its cleaning mechanism 4, can automatically remove dust and sludge from the filter bag 2, replacing manual labor. This further maintains the air permeability and dust removal efficiency of the filter bag 2, effectively reducing the labor intensity of workers and significantly extending the continuous operation cycle of the dust removal device to 6-12 months, greatly reducing maintenance costs. Even when treating high-humidity exhaust gases with a moisture content of 60%-100%, it still achieves a dust removal efficiency >93% and a filter bag 2 lifespan ≥6 months, demonstrating excellent performance. Therefore, this invention is particularly suitable for scenarios with stringent requirements for high-humidity exhaust gas treatment, such as sludge drying and food fermentation, and has significant economic and environmental benefits.

[0031] See Figure 1 As shown, in one embodiment of the filter bag 2 and the rotating mechanism 3, the filter bag 2 includes a filter membrane 22, a first blocking block 23, and a second blocking block 24. The filter membrane 22 has an annular rotating structure and two openings 221. The first blocking block 23 and the second blocking block 24 are respectively connected to the two openings 221 of the filter membrane 22, used to seal the filter membrane 22 and enclose it to form a purification chamber 21. The second blocking block 24 is located at the outlet of the exhaust pipe 13 and is used to block the dust removal chamber 11 and the exhaust pipe 13. The second blocking block 24 has a vent hole 241 for connecting the dust removal chamber 11 and the exhaust pipe 13. The rotating mechanism 3 includes a rotating shaft 31 and a rotating shaft drive assembly 32. Figure 2 As shown, Figure 2 This is a cross-sectional view of the filter bag and rotating shaft in the embodiment. The rotating shaft 31 is rotatably connected inside the dust collection cylinder 1. The rotating shaft 31 is coaxially distributed with the first blocking block 23 and the second blocking block 24, and is fixedly connected by welding or integral connection. The rotating shaft drive assembly 32 is provided on the dust collection cylinder 1 by welding or screwing, and the output end of the rotating shaft drive assembly 32 is fixedly connected to the rotating shaft 31 by welding or screwing. The rotating shaft drive assembly 32 is used to drive the rotating shaft 31 to rotate, thereby driving the filter bag 2 to rotate. In this way, the present invention, through the cooperation of the first blocking block 23, the second blocking block 24, the rotating shaft 31, and the rotating shaft drive assembly 32, can stably drive the filter membrane 22 to rotate at high speed, throwing condensate onto the inner wall of the dust collection cylinder 1, further optimizing the dust removal effect. During this process, the second block 24 always blocks the dust removal chamber 11 and the exhaust pipe 13, ensuring that the exhaust gas must pass through the filter membrane 22 for purification before it can be discharged from the exhaust pipe 13 through the vent 241, thereby effectively ensuring the exhaust gas purification effect of this utility model.

[0032] The aforementioned shaft drive assembly 32 can use existing servo motors or other rotary drive mechanisms. In this embodiment, the rotational speed of the shaft drive assembly 32 is 100–300 rpm, resulting in a centrifugal acceleration ≥50g. A vent pipe 242 is embedded in the vent hole 241 of the second block 24.

[0033] See Figure 1 and Figure 2As shown, based on the above embodiment, the filter membrane 22 includes a lower filter membrane 222, an upper filter membrane 223, and a connecting block 224. The connecting block 224 is fixed to the rotating shaft 31 by welding or integral connection. The lower filter membrane 222 and the upper filter membrane 223 are coaxially distributed. The bottom end of the lower filter membrane 222 is fixed to the first blocking block 23 by bonding or nailing, and the top end is fixed to the connecting block 224 by bonding or nailing. The bottom end of the upper filter membrane 223 is fixed to the connecting block 224 by bonding or nailing, and the top end is fixed to the second blocking block 24 by bonding or nailing. The lower filter membrane 222 has an inverted frustum-shaped annular rotating structure and is positioned opposite to the air inlet pipe 12, while the upper filter membrane 223 has a frustum-shaped annular rotating structure. Thus, the double-layer filter membrane 22 and its frustum structure design effectively increase the contact area between the exhaust gas and the filter membrane 22, improving filtration efficiency. The connecting block 224 not only connects the lower filter membrane 222 and the upper filter membrane 223, ensuring the airtightness of the purification chamber 21, but also enhances the stability of the frustum structure of the filter membrane 22.

[0034] The angle between the filter membrane 22 and the inner wall of the dust collector 1 is set as α. In this embodiment, α is 30°.

[0035] Based on the above embodiments, the filter membrane 22 is made of hydrophobic PTFE-coated glass fiber. Thus, the hydrophobic PTFE-coated glass fiber filter membrane 22 has excellent hydrophobicity, with a contact angle >150°, effectively preventing water vapor from adhering to the surface of the filter membrane 22, reducing sludge formation, and ensuring the air permeability of the filter membrane 22. At the same time, this material also possesses high filtration accuracy and strength, capable of withstanding the centrifugal force generated by rotation and the impact force of exhaust gas, extending the service life of the filter membrane 22 and reducing maintenance costs.

[0036] See Figure 1 As shown, in one embodiment of the cleaning mechanism 4, the cleaning mechanism 4 includes a flexible scraper 41 and a scraper drive assembly 42. The scraper drive assembly 42 is mounted on the dust collection cylinder 1 by welding or screwing and is connected to the flexible scraper 41 in a driving manner. The scraper drive assembly 42 is used to drive the flexible scraper 41 to move towards or away from the filter bag 2, so that the flexible scraper 41 makes line contact or surface contact with the outer surface of the filter membrane 22. In this way, driven by the scraper drive assembly 42, the flexible scraper 41 can make line contact or surface contact with the outer surface of the filter bag 2. As the filter bag 2 rotates, the flexible scraper 41 can automatically and thoroughly scrape off the dust and mud on the surface of the filter bag 2, maintain the air permeability of the filter bag 2, and ensure the efficient operation of the dust collection device. In addition, the flexible scraper 41 is made of flexible material, which can avoid excessive wear on the filter bag 2 and ensure the integrity of the filter membrane 22.

[0037] In this embodiment, the flexible scraper 41 is made of silicone material with a thickness of 5mm.

[0038] See Figure 1 As shown, based on the above embodiment, the filter membrane 22 is correspondingly arranged with at least two flexible scrapers 41, and the length of the flexible scraper 41 is not less than the outer surface length of the corresponding filter membrane 22. In this way, the multiple flexible scrapers 41 corresponding to the filter membrane 22 can expand the cleaning range. Combined with the length design of the flexible scrapers 41, it can ensure that the entire surface of the filter membrane 22 is thoroughly cleaned, avoiding cleaning dead corners and further improving the cleaning effect.

[0039] See Figure 1 As shown, in one embodiment of the scraper drive assembly 42, the scraper drive assembly 42 includes a pneumatic pump 421 and a pneumatic telescopic rod 422. The pneumatic pump 421 is mounted on the dust collection cylinder 1 by welding or screwing, and is connected to one end of the pneumatic telescopic rod 422 via an air pipe. The other end of the pneumatic telescopic rod 422 is connected to the flexible scraper 41 by welding or rotation. The pneumatic pump 421 is used to drive the pneumatic telescopic rod 422 to extend or retract, thereby causing the flexible scraper 41 to move towards or away from the filter membrane 22. Thus, by using the pneumatic pump 421, the extension and retraction of the pneumatic telescopic rod 422 can be pneumatically driven, thereby precisely controlling the relative position of the flexible scraper 41 and the filter membrane 22. It can be seen that this pneumatically driven flexible scraper 41 method can flexibly adjust the contact method and contact force between the flexible scraper 41 and the outer surface of the filter membrane 22 as needed, thereby adjusting the cleaning effect to adapt to dust of different viscosities.

[0040] The pneumatic pump 421 and pneumatic telescopic rod 422 mentioned above can use existing pneumatic pump 421 and pneumatic telescopic rod 422. The pneumatic pump 421 is connected to an external air source to realize the pneumatic drive of the telescopic rod 422 to extend and retract.

[0041] See Figure 1 As shown, based on the above embodiment, each flexible scraper 41 is correspondingly provided with two pneumatic pumps 421 and two pneumatic telescopic rods 422, with the two pneumatic telescopic rods 422 respectively connected to both ends of the corresponding flexible scraper 41. In this way, the two pneumatic pumps 421 and the two pneumatic telescopic rods 422 cooperate to synchronously press the two ends of the flexible scraper 41 into contact with the outer surface of the filter membrane 22, ensuring that the flexible scraper 41 can stably maintain line contact or surface contact with the outer surface of the filter membrane 22.

[0042] See Figure 1As shown, in one embodiment of the dust collector 1, the exhaust pipe 13 is integrally connected or welded to the top of the dust collector 1. The inlet pipe 12 is integrally connected or welded to the outer wall of the dust collector 1. A water collection space 14 is formed between the inlet pipe 12 and the bottom surface inside the dust collector 1. The bottom end of the dust collector 1 has a drain port 15 communicating with the water collection space 14. In this way, the exhaust pipe 13 is located above the inlet pipe 12, which is conducive to the smooth discharge of the exhaust gas after purification, conforms to the natural rising law of gas, and reduces the resistance to gas flow. The water collection space 14 can conveniently collect the condensate generated during the exhaust gas purification process, and the drain port 15 can conveniently discharge the collected water out of the dust collector 1, avoiding the impact of water accumulation on the equipment such as corrosion.

[0043] See Figure 1 As shown, based on the above embodiment, multiple guide channels 16 are evenly distributed at equal intervals on the inner wall of the dust collector 1. The guide channels 16 have a serpentine rotating structure, and the bottom opening 221 of the guide channels 16 is located within the water collection space 14. The guide channels 16 are used to guide condensate water downwards into the water collection space 14. In this way, the guide channels 16 can guide the condensate water on the inner wall of the dust collector 1 to flow smoothly into the water collection space 14, avoiding the accumulation of condensate water on the inner wall of the dust collector 1 and its fall back onto the filter bag 2.

[0044] In this embodiment, the depth of the guide groove 16 is 10-15mm, and the pitch is 50-80mm.

[0045] See Figure 1 As shown, based on the above embodiments, the high-humidity exhaust gas rotary centrifugal dust collector also includes an ultrasonic atomizer 5. The ultrasonic atomizer 5 is installed at the bottom of the dust collector cylinder 1 and communicates with the water collection space 14. The ultrasonic atomizer 5 is used to atomize the condensate in the water collection space 14 and then spray it back into the sludge drying chamber. Thus, when the drain outlet 15 is closed, this invention can perform secondary atomization treatment on the condensate in the water collection space 14 through the ultrasonic atomizer 5, spraying the condensate back into the sludge temporary storage area in the sludge drying chamber to humidify the sludge, which is then dried again along with fresh sludge. It can be seen that this invention can 100% recycle and reuse condensate through the ultrasonic atomizer 5, achieving zero wastewater discharge. Compared with traditional wet dust collection, it saves more than 90% of water, greatly conserving water resources, reducing production costs, and meeting the requirements of environmental protection and sustainable development.

[0046] The ultrasonic atomizer 5 described above can use an existing ultrasonic atomizer 5.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-humidity exhaust gas rotary centrifugal dust collector, characterized in that, include: A dust collector cylinder, wherein a dust collection chamber is provided inside the dust collector cylinder, and an air inlet pipe and an exhaust pipe communicating with the dust collection chamber are provided on the dust collector cylinder; The filter bag and the rotating mechanism are provided. The filter bag is rotatably disposed in the dust removal chamber and cuts off the dust removal chamber and the exhaust pipe. The filter bag has a purification chamber that communicates with the exhaust pipe. The filter bag is used to filter exhaust gas. The rotating mechanism is disposed on the dust removal cylinder and is connected to the filter bag in a driving manner. The rotating mechanism is used to drive the filter bag to rotate so as to throw the water on the filter bag onto the inner wall of the dust removal cylinder. A cleaning mechanism is provided on the dust collector and is used to clean the dust and mud on the filter bag.

2. The high humidity exhaust gas rotary centrifugal dust collector according to claim 1, characterized in that, The filter bag includes a filter membrane, a first blocking block, and a second blocking block. The filter membrane has an annular rotating structure and two openings. The first blocking block and the second blocking block are respectively located at the two openings of the filter membrane to seal the filter membrane and form the purification chamber with the filter membrane. The second blocking block is located at the exhaust pipe opening and is used to block the dust removal chamber and the exhaust pipe. The second blocking block has a vent hole for connecting the dust removal chamber and the exhaust pipe. The rotating mechanism includes a rotating shaft and a rotating shaft drive assembly. The rotating shaft is rotatably disposed inside the dust collector and is coaxially fixedly connected to the first block and the second block. The rotating shaft drive assembly is disposed on the dust collector, and the output end of the rotating shaft drive assembly is fixedly connected to the rotating shaft. The rotating shaft drive assembly is used to drive the rotating shaft to rotate, thereby driving the filter bag to rotate.

3. The high humidity exhaust gas rotary centrifugal dust collector according to claim 2, characterized in that, The filter membrane includes a lower filter membrane, an upper filter membrane, and a connecting block. The connecting block is fixedly connected to the rotating shaft. The lower filter membrane and the upper filter membrane are coaxially distributed. The bottom end of the lower filter membrane is fixedly connected to the first blocking block, and the top end is fixedly connected to the connecting block. The bottom end of the upper filter membrane is fixedly connected to the connecting block, and the top end is fixedly connected to the second blocking block. The lower filter membrane has an inverted frustum-shaped annular rotating structure and is positioned opposite to the air inlet pipe. The upper filter membrane has a frustum-shaped annular rotating structure.

4. The high-humidity exhaust gas rotary centrifugal dust collector according to claim 3, characterized in that, The filter membrane is made of hydrophobic PTFE-coated glass fiber.

5. The high-humidity exhaust gas rotary centrifugal dust collector according to any one of claims 2 to 4, characterized in that, The cleaning mechanism includes a flexible scraper and a scraper drive assembly. The scraper drive assembly is disposed on the dust collection cylinder and is connected to the flexible scraper in a transmission manner. The scraper drive assembly is used to drive the flexible scraper to move toward or away from the filter bag so that the flexible scraper makes line contact or surface contact with the outer surface of the filter membrane.

6. The high-humidity exhaust gas rotary centrifugal dust collector according to claim 5, characterized in that, The filter membrane is correspondingly provided with at least two flexible scrapers, and the length of the flexible scraper is not less than the outer surface length of the corresponding filter membrane.

7. The high-humidity exhaust gas rotary centrifugal dust collector according to claim 5, characterized in that, The scraper drive assembly includes a pneumatic pump and a pneumatic telescopic rod. The pneumatic pump is mounted on the dust collector and connected to one end of the pneumatic telescopic rod. The other end of the pneumatic telescopic rod is connected to the flexible scraper. The pneumatic pump is used to drive the pneumatic telescopic rod to extend or shorten, thereby causing the flexible scraper to move toward or away from the filter membrane.

8. The high-humidity exhaust gas rotary centrifugal dust collector according to any one of claims 1, 2, 3, 4, 6 and 7, characterized in that, The exhaust pipe is located at the top of the dust collector cylinder, the air inlet pipe is located on the outer wall of the dust collector cylinder, a water collection space is formed between the air inlet pipe and the bottom surface inside the dust collector cylinder, and a drain outlet communicating with the water collection space is provided at the bottom end of the dust collector cylinder.

9. The high-humidity exhaust gas rotary centrifugal dust collector according to claim 8, characterized in that, Multiple guide channels are evenly spaced on the inner wall of the dust collector cylinder. The guide channels have a serpentine rotating structure. The bottom opening of the guide channel is located in the water collection space. The guide channels are used to guide condensate water to slide down into the water collection space.

10. The high-humidity exhaust gas rotary centrifugal dust collector according to claim 8, characterized in that, The high humidity exhaust gas rotary centrifugal dust removal device also includes an ultrasonic atomizer, which is located at the bottom of the dust removal cylinder and communicates with the water collection space. The ultrasonic atomizer is used to atomize the condensate in the water collection space and spray it back into the sludge drying chamber.

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