A device for capturing and separating liftable solid particles based on flue gas treatment

Abstract

The present invention relates to the technical field of flue gas purification treatment, and discloses a flue gas treatment-based solid particle capture and separation device, comprising a shell, a fixed shaft is coaxially arranged in the shell, a duct structure in the shape of a spiral path is fixedly connected to the fixed shaft, a spiral air groove is arranged on the inner wall of the shell, an annular gap is arranged between the spiral air groove and the air duct structure, a filter is rotatably arranged in the gap, a cleaning bin is arranged on the outer side of the filter shell, a winding shaft is rotatably arranged in the cleaning bin, and a cleaning component is laid on the surface of the winding shaft; the device changes the flow direction of the flue gas through the spiral design of the air duct structure, and uses centrifugal force to push the flue gas to the filter screen, so that the particles therein are gradually adsorbed by the filter screen, and after the flue gas enters the spiral air groove, the flue gas flow rate is accelerated because the channel is small and there is no filter screen to hinder it, and the generated pressure difference and spiral force improve the passing rate of the filter screen and the overall filtration efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas purification and treatment, and in particular to a flue gas treatment-based capture and separation device for liftable solid particles. Background Art

[0002] Equipment for treating the solid particles in flue gas plays an important role in industrial production. By effectively removing solid particles in flue gas, these equipment help reduce pollution to the environment and protect human health. Flue gas generated by industrial activities often contains a large number of solid particles. If not controlled, these particles will be released into the atmosphere, causing air pollution and having a negative impact on the ecological environment and public health. These dust removal equipment captures and removes particulate matter in flue gas through various technical means and working principles. For example, cyclone separators use centrifugal force to separate larger particles, bag filters capture fine particles through physical filtration, electrostatic precipitators use electric fields to settle particles, and wet scrubbers remove particles and some gaseous pollutants through liquid washing. Each device has its specific application occasions and advantages, which can meet the needs of different industrial fields.

[0003] However, during the operation of current flue gas treatment equipment, disposable filters or bags are usually used to filter solid particles. Such disposable filters or bags need to be replaced frequently when processing flue gas containing a large amount of solid particles or after a long period of continuous operation, which not only increases the operating cost, but also the efficiency of cleaning the replaced filters or bags is relatively low. Moreover, it is difficult for disposable filters or bags to always maintain their filtering state during use. Once these filter media are severely blocked locally, the filtration efficiency will decrease, and if they need to be replaced, it will not only be costly, but may also affect the overall operating efficiency of the equipment. Summary of the invention

[0004] (I) Technical problems to be solved: In view of the shortcomings of the prior art, the present invention provides a flue gas treatment-based capture and separation device for liftable solid particles, which has the advantages of long-term operation of the filter without clogging and high filtration efficiency, and solves the problem that disposable filter screens or cloth bags are easily clogged and need to be replaced frequently, which increases operating costs and reduces filtration efficiency.

[0005] (II) Technical solution: In order to achieve the purpose that the above-mentioned filter screen can work for a long time without being blocked and having high filtering efficiency, the present invention provides the following technical solution: A solid particle capture and separation device based on flue gas treatment, comprising a shell, wherein smoke enters the bottom of the shell and exits the top of the shell, a fixed shaft is coaxially arranged in the shell, a duct structure in the shape of a spiral path is fixedly connected to the fixed shaft, a cover plate is arranged on the top of the duct structure, and the cover plate is fixedly connected to the fixed shaft, a spiral air groove corresponding to the spiral path of the duct structure is arranged on the inner wall of the shell, an annular gap is arranged between the spiral air groove and the duct structure, a filter screen is rotatably arranged in the gap, an annular sealing groove is also arranged on the inner wall of the shell, the sealing groove is slidably connected to the bottom of the filter screen, the top of the filter screen is rotatably connected to the cover plate, a cleaning chamber is arranged on the outer side of the shell, a winding shaft is rotatably arranged in the cleaning chamber, a cleaning component is laid on the surface of the winding shaft, and the filter screen is rotatably connected to the winding shaft; the winding shaft drives the filter screen to rotate and the cleaning component cleans the particles on the surface of the filter screen.

[0006] Preferably, a partition is also provided in the shell, and an air hole coaxial with the fixed axis is formed on the partition, the diameter of the air hole is larger than the diameter of the fixed axis, the air duct structure is arranged on the fixed axis as two groups, and the filtering diameter of the filter arranged on the upper air duct structure is smaller than the filtering diameter of the filter arranged on the lower air duct structure, a gap is arranged between the two groups of air duct structures, the partition is arranged at the gap position, the two groups of air duct structures are respectively arranged above and below the partition, and a gas channel is formed between the cover plate on the lower air duct structure and the partition, the gas channel is connected with the upper air duct structure through the air hole, and the spiral air groove is connected with the gas channel.

[0007] Preferably, a plurality of groups of rotating rollers are rotatably arranged in the cleaning chamber, the rotating rollers are rotatably connected to the filter screen, and a driving motor is arranged at the top and bottom of the cleaning chamber, and the driving motor is connected to the winding shaft.

[0008] Preferably, a mounting hole is provided on the shell, the filter screen passes through the mounting hole and is rotatably connected to the winding shaft, and the mounting hole connects the spiral air groove with the cleaning chamber.

[0009] Preferably, a plurality of layers of circulating air baffles connected to the spiral air grooves are further provided on the inner wall of the cleaning chamber, and the circulating air baffles are attached to the filter screen and the two ends of the circulating air baffles are respectively connected to the spiral air grooves.

[0010] Preferably, the lower end surface of the cover plate is provided with an annular limiting structure, the top of the filter screen is slidably connected to the limiting structure, the sealing groove, the limiting structure and the filter screen separate the spiral air groove from the air duct structure, and the gas flows through the filter screen.

[0011] Preferably, the fixed shaft and the shell are rotatably connected, the fixed shaft comprises an upper rotating shaft and a lower rotating shaft, the bottom of the upper rotating shaft is nested in the lower rotating shaft, and the bottoms of the upper rotating shaft and the lower rotating shaft are connected to a driving structure, when the upper rotating shaft and the lower rotating shaft rotate, the air duct structure rotates with them; the upper rotating shaft is rotatably connected to the lower rotating shaft, and a fan structure is also arranged on the upper end surface of the partition, the fan structure is coaxially mounted on the upper rotating shaft, a plurality of fan-shaped grooves are opened on the surface of the upper rotating shaft along its circumferential direction, a plurality of groups of sliders are slidably arranged in the shaft of the fan structure, the sliders are connected to the fan structure by elastic members, and the sliders are inserted into the fan-shaped grooves; when the fan structure rotates with the upper rotating shaft, the slider generates centrifugal force, when the centrifugal force is greater than the elastic force of the elastic member, the slider disengages from the fan-shaped groove, the rotation speed of the fan structure slows down, and when the centrifugal force on the slider is reduced until it is less than the elastic force of the elastic member, the slider slides back into the fan-shaped groove.

[0012] Preferably, the upper rotating shaft and the lower rotating shaft have different rotation speeds, and the rotation difference between the upper rotating shaft and the lower rotating shaft changes periodically.

[0013] (III) Beneficial effects: Compared with the prior art, the present invention provides a device for capturing and separating solid particles that can be lifted based on flue gas treatment, which has the following beneficial effects: 1. The device for capturing and separating solid particles that can be lifted based on flue gas treatment uses a duct structure and a spiral air slot structure in combination. When the device is performing flue gas treatment, the flue gas will move along the spiral direction of the duct structure after entering the shell. The design of the spiral structure not only changes the flow direction of the flue gas, but also, because of its continuous bending and turning, the flue gas will be subjected to an outward centrifugal force during the movement, so that the flue gas will gradually It gradually sticks to the filter and moves. In the process of sticking to the filter and moving, the particles contained in the smoke are gradually adsorbed by the filter and pass through the filter. When the smoke passes through the filter, it enters the spiral air groove. Since the channel diameter of the spiral air groove is relatively small and the smoke is no longer hindered by the filter at this stage, the smoke can pass through the spiral air groove faster. At this time, the gas pressure in the spiral air groove will be lower than the gas pressure in the air duct structure. This pressure difference and the spiral directional force work together to make the smoke in the air duct structure pass through the filter faster, thereby improving the gas passage rate of the filter and the overall filtration efficiency.

[0014] 2. The flue gas treatment-based solid particle capture and separation equipment uses a filter structure in conjunction with a reel structure. The reel will reel in the filter in a cycle during the operation of the equipment. During the reeling process, the cleaning component on the reel will clean the inner surface of the filter to reduce the solid shell attached to the filter. In this case, the filtration efficiency of the filter is improved and the service life of the filter is extended.

[0015] 3. The flue gas treatment-based liftable solid particle capture and separation device uses a fan structure in conjunction with a filter structure. When the fan structure rotates, an upward wind pressure is generated in the gas channel, thereby increasing the upward gas flow rate in the gas channel, thereby improving the flue gas filtration efficiency; and the rotation speed of the fan structure changes periodically. Each time the fan structure suddenly slows down and the wind speed decreases, the particles in the flue gas will continue to maintain their original state of motion due to inertia, and the reduction in flow rate increases the residence time of the particles on the filter surface, thereby increasing the chance of the particles being captured, and significantly improving the filtering effect of the filter.

[0016] 4. The liftable solid particle capture and separation equipment based on flue gas treatment uses a fan structure in conjunction with an upper rotating shaft structure. When the fan structure rotates and the centrifugal force generated by the slider structure is greater than the elastic force of the elastic member, the slider will slide in the direction of increasing diameter of the upper rotating shaft under the influence of the centrifugal force and leave the fan-shaped groove. At this time, the fan structure is decoupled from the upper rotating shaft, and the fan structure cannot maintain its own speed and starts to decelerate. Therefore, the repeated movement of the fan structure does not require additional circuit control or other structural control. The lack of additional circuit control and other structural control means that the design of the entire system can be simpler, which not only reduces the complexity and manufacturing cost of the equipment, but also improves the overall reliability and stability of the equipment, and reduces downtime and maintenance costs caused by failures.

[0017] 5. The liftable solid particle capture and separation equipment based on flue gas treatment uses a fan structure in conjunction with an upper rotating shaft structure. During the operation of the equipment, due to the different rotation speeds between the upper rotating shaft and the lower rotating shaft, and the periodic change in their differential speed, the flue gas will rapidly change its flow rate in the process of passing through the gas channel and entering the upper air duct structure. This change in flow rate will cause the state of the flue gas to change when passing through the filter. The effect produced by the fan structure is similar, and this effect is superimposed on the change in flow rate produced by the fan structure, which can cause more violent movement changes in the flue gas, thereby making the particles in the flue gas more affected by the inertial force, thereby further improving the flue gas filtration effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the liftable solid particle capture and separation equipment based on flue gas treatment in the present invention.

[0019] Figure 2 It is a structural front view of the liftable solid particle capture and separation device based on flue gas treatment in the present invention.

[0020] Figure 3 It is a top view of the structure of the liftable solid particle capture and separation equipment based on flue gas treatment in the present invention.

[0021] Figure 4 for Figure 3 AA section view.

[0022] Figure 5 for Figure 2 Middle BB section view.

[0023] Figure 6 for Figure 2 Middle DD section view.

[0024] Figure 7 for Figure 4 Enlarged view of the local structure in N.

[0025] Figure 8 for Figure 5 The enlarged view of the local structure in M.

[0026] Fig. 9 It is a cross-sectional schematic diagram of the slider contracting due to centrifugal force.

[0027] In the figure: 1. Shell; 11. Sealing groove; 12. Partition; 13. Air hole; 14. Spiral air groove; 2. Fixed shaft; 21. Upper rotating shaft; 22. Lower rotating shaft; 23. Air duct structure; 24. Cover plate; 25. Fan-shaped groove; 3. Filter; 4. Cleaning chamber; 41. Winding shaft; 42. Rotating roller; 43. Driving motor; 44. Circulating air partition; 5. Gas channel; 6. Fan structure; 61. Sliding block; 62. Elastic member. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-Figure 4 and Figure 6, a device for capturing and separating solid particles based on flue gas treatment, comprising a shell 1, wherein smoke enters from the bottom of the shell 1 and exits from the top. This design utilizes the natural upward trend of airflow and the gravity effect to allow smoke to flow naturally in the shell 1. This directional setting can effectively utilize the natural upward trend of airflow, help particles settle under the action of gravity, and improve separation efficiency. A fixed shaft 2 is coaxially arranged in the shell 1, and a duct structure 23 in the shape of a spiral path is fixedly connected to the fixed shaft 2. The duct structure 23 in the shape of a spiral path can generate centrifugal force in the flue gas during the flow process, enhance the contact between particles and the filter 3, and improve the separation efficiency of particles. At the same time, the spiral path also increases the flow path of the flue gas, thereby improving the processing time and effect of the device. A cover plate 24 is arranged on the top of the duct structure 23, and the cover plate 24 is fixedly connected to the fixed shaft 2. The design of the cover plate 24 can prevent the smoke from escaping directly from the top, so that it flows along a predetermined path, thereby improving the filtration efficiency. In addition, the connection between the cover plate 24 and the fixed shaft 2 ensures the stability of the structure. The inner wall of the housing 1 is provided with a spiral air groove 14 with a spiral path corresponding to the air duct structure 23. This design forms a closed airflow path, ensuring that the smoke circulates effectively between the air duct and the air groove, thereby improving the separation efficiency. An annular gap is provided between the spiral air groove 14 and the air duct structure 23, in which a filter screen 3 is rotatably provided. The annular gap allows the filter screen 3 to rotate therein, thereby increasing the available area of ​​the filter screen 3 and improving the filtering efficiency. The rotation of the filter screen 3 also allows it to be cleaned and its performance is maintained. An annular sealing groove 11 is also provided on the inner wall of the housing 1, and the sealing groove 11 is slidably connected to the bottom of the filter screen 3. The sealing groove 11 ensures the sealing of the airflow, prevents the smoke from escaping in unnecessary places, and ensures that all the smoke is filtered through the filter screen 3. The top of the filter screen 3 is rotatably connected to the cover plate 24, and a cleaning chamber 4 is provided on the outer side of the housing 1. A reel 41 is rotatably provided in the cleaning chamber 4. The design of the cleaning chamber 4 and the reel 41 allows the filter screen 3 to be automatically cleaned, reducing manual maintenance and improving the continuous working capacity and efficiency of the equipment. The surface of the reel 41 is paved with a cleaning component, the purpose of which is to automatically remove the solid particles accumulated on the filter 3, so as to maintain the filtering efficiency of the filter 3, reduce the frequency of manual intervention, and extend the service life of the filter 3. The cleaning component is specifically composed of a brush bar, a spray device or compressed air that can clean the filter 3. The filter 3 is rotatably connected to the reel 41. This design allows the filter 3 to be driven by the reel 41 to rotate when the equipment is running, so that the cleaning component can contact various parts of the filter 3 to ensure comprehensive cleaning; the reel 41 drives the filter 3 to rotate and the cleaning component cleans the particles on the surface of the filter 3, which realizes an automated cleaning process through mechanical movement, reduces the downtime of the equipment, and improves the continuity and efficiency of the operation. The cleaning bin 4 can collect the solid particles cleaned from the filter 3 by the cleaning component. By collecting the cleaned particles, the equipment can prevent these particles from re-entering the airflow system, ensuring higher separation efficiency and cleanliness of the system.

[0030] See also Figure 4 , a partition 12 is also provided in the housing 1. The partition 12 divides the internal space of the device into different areas, supports a multi-stage filtering process, and enables the device to process particles in the smoke more efficiently. The partition 12 is provided with an air hole 13 coaxial with the fixed shaft 2, and the diameter of the air hole 13 is larger than the diameter of the fixed shaft 2. This design allows the gas to smoothly enter the next filtering stage after preliminary filtration without being hindered by the structure. At the same time, the diameter of the air hole 13 is larger than the diameter of the fixed shaft 2 to ensure the smooth transition of the airflow and prevent the airflow from generating unnecessary pressure loss here. The air duct structure 23 is arranged in two groups on the fixed shaft 2, and the filter diameter of the filter 3 arranged on the upper air duct structure 23 is smaller than the filter diameter of the filter 3 on the lower air duct structure 23. By setting the filter 3 with different filter diameters, step-by-step filtering is achieved, so that the device can efficiently capture particles of different sizes. The larger filter diameter at the bottom first captures larger particles, and the smaller filter diameter at the top further captures fine particles, thereby improving the overall filtration efficiency. There is a gap between the two groups of air duct structures 23, and the partition 12 is set at the gap position. The setting of the gap and the partition 12 helps to divide the inside of the device into multiple stages of filtering areas, ensuring that the smoke has sufficient space and time to adjust the flow state after passing through a filtering area so as to enter the next filtering area more effectively. This staged treatment can improve the capture rate of particles. The two groups of air duct structures 23 are respectively arranged above and below the partition 12. This arrangement allows the smoke to pass through two different filtering stages when passing through the device, achieving more efficient particle capture. This design ensures that particles that are not captured in the first stage have the opportunity to be captured in the second stage. A gas channel 5 is formed between the cover plate 24 on the lower air duct structure 23 and the partition 12. The gas channel 5 is connected to the upper air duct structure 23 through the air hole 13. This design ensures that the smoke can smoothly transition from the lower air duct structure 23 to the upper air duct structure 23. Through the connection of the gas channel 5, the continuity and stability of the air flow are maintained. The presence of the air hole 13 allows the air flow to continue to flow without obstruction, reducing the pressure loss. The spiral gas groove 14 is connected to the gas channel 5. It ensures that the gas maintains continuous flow during the entire treatment process, which not only helps to improve the filtration efficiency, but also optimizes the dynamic characteristics of the airflow. The design of the spiral gas groove 14 can also increase the speed and turbulence of the airflow, thereby improving the separation efficiency of particles.

[0031] See also Figure 4 and Figure 6, several groups of rotating rollers 42 are also rotatably arranged in the cleaning chamber 4, and the rotating rollers 42 are rotatably connected to the filter screen 3. These rotating rollers 42 are used to support and guide the filter screen 3 so that it can move smoothly during the cleaning process. They help maintain the correct position and shape of the filter screen 3, thereby ensuring that the filter screen 3 does not deviate from the predetermined track during the cleaning process. A driving motor 43 is arranged at the top and bottom of the cleaning chamber 4, and the driving motor 43 is connected to the winding shaft 41. The driving motor 43 provides power to the winding shaft 41 so that it can automatically rewind the filter screen 3 in a cycle. This not only improves the automation level of the equipment, but also ensures that the filter screen 3 can be cleaned regularly and maintain good filtering performance. A mounting hole is provided on the housing 1, and the filter screen 3 passes through the mounting hole and is rotatably connected to the winding shaft 41, and the mounting hole connects the spiral air groove 14 with the cleaning chamber 4. The design of the mounting hole enables the filter screen 3 to move smoothly between the air duct structure 23 and the cleaning chamber 4, and this design maintains the sealing of the system and the continuity of the airflow. Several layers of circulating air baffles 44 connected to the spiral air groove 14 are also provided on the inner wall of the cleaning chamber 4. The circulating air baffles 44 are attached to the filter screen 3 and are connected to the spiral air groove 14 at both ends. The design of the circulating air baffle 44 helps to maintain the continuity of the airflow so that the gas can continue to flow during the cleaning process. This reduces the interference with the airflow during the cleaning process and ensures that the system can operate stably. An annular limiting structure is provided on the lower end surface of the cover plate 24. The top of the filter screen 3 is slidably connected to the limiting structure. The annular limiting structure is used to limit the vertical movement of the filter screen 3 to ensure that the filter screen 3 remains stable during operation. This helps prevent the filter screen 3 from deflecting or deforming during the cleaning process. The sealing groove 11, the limiting structure and the filter screen 3 separate the spiral air groove 14 from the air duct structure 23, and the gas circulates through the filter screen 3. The combination of the sealing groove 11 and the limiting structure maintains the air tightness of the system, prevents the unfiltered gas from escaping, and improves the filtering effect.

[0032] See also Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8, the fixed shaft 2 is rotatably connected to the housing 1, and the fixed shaft 2 includes an upper rotating shaft 21 and a lower rotating shaft 22. The bottom of the upper rotating shaft 21 is nested inside the lower rotating shaft 22, and the bottoms of the upper rotating shaft 21 and the lower rotating shaft 22 are connected to a driving structure (not shown). This design enables the air duct structure 23 to flexibly respond to different operating conditions. By independently driving the upper and lower rotating shafts 22, different rotation speeds can be achieved, thereby adjusting the flow characteristics of the smoke. This flexibility helps to optimize the filtering effect. When the upper rotating shaft 21 and the lower rotating shaft 22 rotate, the air duct structure 23 rotates with them. This design ensures that the air duct structure 23 can generate the necessary centrifugal force to help push the particles in the smoke to the filter 3. By adjusting the rotation speed of the air duct structure 23, the flow speed and path of the smoke can be controlled, thereby improving the capture efficiency of the particles. The upper rotating shaft 21 and the lower rotating shaft 22 are rotatably connected, and a fan structure 6 is also provided on the upper end surface of the partition 12. The presence of the fan structure 6 helps to generate additional wind pressure in the gas channel 5, thereby enhancing the flow speed and filtering effect of the gas. The rotating connection allows the fan structure 6 to adjust its rotation speed to suit different filtering needs. The fan structure 6 is coaxially mounted on the upper rotating shaft 21. This design ensures that the fan structure 6 and the upper rotating shaft 21 can operate synchronously, avoiding a complex linkage mechanism. The surface of the upper rotating shaft 21 is provided with a plurality of fan-shaped grooves 25 along its circumferential direction. A plurality of groups of sliders 61 are slidably arranged in the shaft of the fan structure 6. The sliders 61 are connected to the fan structure 6 by elastic members 62. The sliders 61 are inserted into the fan-shaped grooves 25. The design of the sliders 61 and the fan-shaped grooves 25 enables the fan structure 6 to automatically adjust its rotation speed under certain conditions. When the slider 61 is disengaged from the fan-shaped groove 25 due to the centrifugal force, the fan structure 6 slows down, thereby changing the airflow speed and pressure. This adaptive adjustment does not require additional electronic control, making the system simpler and reducing failure points; please refer to Figure 7 , Figure 8 and Fig. 9 When the fan structure 6 rotates along with the upper rotating shaft 21, the slider 61 generates centrifugal force. When the centrifugal force is greater than the elastic force of the elastic member 62, the slider 61 disengages from the fan-shaped groove 25. Fig. 9 As shown; the fan structure 6 slows down, and the centrifugal force on the slider 61 is reduced until it is less than the elastic force of the elastic member 62, the slider 61 slides back into the fan-shaped groove 25, as Figure 7 and Figure 8 The upper rotating shaft 21 and the lower rotating shaft 22 have different rotation speeds, and the rotation difference between the upper rotating shaft 21 and the lower rotating shaft 22 changes periodically.

[0033] Working principle: When the device is used to process flue gas, the top of the shell 1 is the outlet direction and the bottom is the inlet direction. After entering the shell 1, the flue gas will move along the spiral direction of the air duct structure 23. The design of the spiral structure not only changes the flow direction of the flue gas, but also because of its continuous bending and turning, the flue gas is subjected to an outward centrifugal force during the movement, so that the flue gas will gradually stick to the filter 3 and move. In the process of sticking to the filter 3 and moving, the particles contained in the flue gas are gradually adsorbed by the filter 3 and pass through the filter 3. When the flue gas passes through the filter 3, it enters the spiral gas groove 14. Since the channel diameter of the spiral gas groove 14 is relatively small, and the flue gas is no longer hindered by the filter 3 at this stage, the flue gas can pass through the spiral gas groove 14 faster. According to the principle of fluid mechanics, when the gas passes through a narrow channel, its flow rate will increase, and the pressure will decrease. The gas pressure in the spiral gas groove 14 will be less than the gas pressure in the air duct structure 23. The pressure difference and the spiral directional force work together to enable the smoke in the air duct structure 23 to pass through the filter screen 3 more quickly, thereby improving the gas passing rate of the filter screen 3 and the overall filtering efficiency.

[0034] The reel 41 will reel the filter 3 in a cycle during the operation of the equipment. During the reeling process, the cleaning component on the reel will clean the inner surface of the filter 3 to reduce the solid shell 1 attached to the filter 3. In this case, the filtering efficiency of the filter 3 is improved and the service life of the filter 3 is extended.

[0035] When the device is treating flue gas, the flue gas will first be filtered through the lower air duct structure 23, then enter the spiral gas groove 14 and enter the upper air duct structure 23 through the gas channel 5 for secondary filtration, then enter the spiral gas groove 14 again and be discharged along the spiral gas groove 14. In this process, the solid particles contained in the flue gas will be further reduced due to the secondary filtration, thereby improving the solid particle fraction efficiency of the device. At the same time, when the fan structure 6 rotates, it will cause upward wind pressure in the gas channel 5, increase the upward gas flow rate in the gas channel 5, and thus improve the flue gas filtration efficiency; and when the fan structure 6 rotates to make the centrifugal force generated by the slider 61 structure greater than the elastic force of the elastic member 62, at this time, the slider 61 will slide in the direction of increasing the diameter of the upper rotating shaft 21 under the influence of the centrifugal force and leave the fan-shaped groove 25, at this time, the fan structure 6 is decoupled from the upper rotating shaft 21, and the fan structure 6 cannot maintain its own speed to start deceleration. In this rapid deceleration process, the wind pressure generated by the fan structure 6 decreases rapidly, thereby causing the flue gas flow rate to decrease rapidly. When the fan structure 6 slows down and causes the flue gas flow rate to decrease rapidly, the particles in the flue gas will continue to maintain their original motion state due to inertia, and the increase in fluid pressure helps the particles to adhere more tightly to the surface of the filter 3. At the same time, the reduction in flow rate increases the residence time of the particles on the surface of the filter 3, increasing the chance of the particles being captured. By repeatedly repeating the above movement by the fan structure 6, the filtering effect of the filter 3 is significantly improved. And this repeated movement of the fan structure 6 does not require additional circuit control or other structural control, which means that the design of the entire system can be simpler. This not only reduces the complexity and manufacturing cost of the equipment, but also reduces the number of failure points in the system, improves the overall reliability and stability of the equipment, and reduces downtime and maintenance costs caused by failures.

[0036] Furthermore, during the operation of the equipment, since the rotation speeds of the upper rotating shaft 21 and the lower rotating shaft 22 are different, and their differential speeds change periodically, the upper and lower spiral duct structures 23 also rotate with the upper rotating shaft 21 and the lower rotating shaft 22 respectively. Since the rotation speeds of the upper and lower duct structures 23 are different, the flow velocity of the flue gas will change rapidly in the process of passing through the gas channel 5 and entering the upper duct structure 23. This flow velocity change will also cause the state of the flue gas when passing through the filter 3. The same is true for the effect produced by the fan structure 6, and this effect is superimposed on the flow velocity change produced by the fan structure 6, which can cause a more drastic movement change of the flue gas, thereby making the particles in the flue gas more affected by the inertial force, thereby further improving the flue gas filtration effect of the equipment.

[0037] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] 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. A device for capturing and separating liftable solid particles based on flue gas treatment, comprising a housing (1), wherein smoke enters from the bottom of the housing (1) and exits from the top of the housing (1), and a fixed shaft (2) is coaxially arranged inside the housing (1), characterized in that: The fixed shaft (2) is fixedly connected to a duct structure (23) in the shape of a spiral path, a cover plate (24) is arranged on the top of the duct structure (23), and the cover plate (24) is fixedly connected to the fixed shaft (2), a spiral air groove (14) in the shape of a spiral path corresponding to the duct structure (23) is arranged on the inner wall of the shell (1), an annular gap is arranged between the spiral air groove (14) and the duct structure (23), a filter screen (3) is rotatably arranged in the gap, and an annular sealing groove (11) is also arranged on the inner wall of the shell (1), and the sealing groove (11) is connected to the bottom of the filter screen (3). The filter (3) is slidably connected, the top of the filter screen (3) is rotatably connected to the cover plate (24), a cleaning chamber (4) is arranged outside the shell (1), a reel (41) is rotatably arranged inside the cleaning chamber (4), a cleaning component is laid on the surface of the reel (41), and the filter screen (3) is rotatably connected to the reel (41); the reel (41) drives the filter screen (3) to rotate and the cleaning component cleans particles on the surface of the filter screen (3); a partition (12) is further arranged inside the shell (1), and an air hole (13) coaxial with the fixed shaft (2) is opened on the partition (12), and the air hole (13) ) has a diameter greater than that of the fixed shaft (2), the air duct structure (23) is arranged on the fixed shaft (2) in two groups, the filter screen (3) arranged on the upper air duct structure (23) has a filtering diameter smaller than the filtering diameter of the filter screen (3) on the lower air duct structure (23), a gap is arranged between the two groups of air duct structures (23), the partition (12) is arranged at the position of the gap, the two groups of air duct structures (23) are arranged above and below the partition (12), and a gas channel (5) is formed between the cover plate (24) on the lower air duct structure (23) and the partition (12), The gas channel (5) is connected to the air duct structure (23) above through the air hole (13), and the spiral air groove (14) is connected to the gas channel (5); the fixed shaft (2) and the shell (1) are rotatably connected, the fixed shaft (2) comprises an upper rotating shaft (21) and a lower rotating shaft (22), the bottom of the upper rotating shaft (21) is nested inside the lower rotating shaft (22), and the bottoms of the upper rotating shaft (21) and the lower rotating shaft (22) are both connected to a driving structure, and when the upper rotating shaft (21) and the lower rotating shaft (22) rotate, the air duct structure (23) rotates with them;The upper rotating shaft (21) is rotatably connected to the lower rotating shaft (22); a fan structure (6) is also provided on the upper end surface of the partition (12); the fan structure (6) is coaxially mounted on the upper rotating shaft (21); a plurality of fan-shaped grooves (25) are provided on the surface of the upper rotating shaft (21) along its circumferential direction; a plurality of groups of sliding blocks (61) are slidably provided in the shaft of the fan structure (6); the sliding blocks (61) are connected to the fan structure (6) via elastic members (62); The block (61) is inserted into the fan-shaped groove (25); when the fan structure (6) rotates along with the upper rotating shaft (21), the slider (61) generates centrifugal force, and when the centrifugal force is greater than the elastic force of the elastic member (62), the slider (61) disengages from the fan-shaped groove (25), the rotation speed of the fan structure (6) slows down, and when the centrifugal force on the slider (61) decreases until it is less than the elastic force of the elastic member (62), the slider (61) slides back into the fan-shaped groove (25).

2. The device for capturing and separating liftable solid particles based on flue gas treatment according to claim 1 is characterized in that: A plurality of groups of rotating rollers (42) are rotatably arranged in the cleaning chamber (4), and a driving motor (43) is arranged at the top and bottom of the cleaning chamber (4), and the driving motor (43) is connected to the winding shaft (41).

3. The device for capturing and separating liftable solid particles based on flue gas treatment according to claim 1 is characterized in that: The housing (1) is provided with a mounting hole, the filter screen (3) passes through the mounting hole and is rotatably connected to the reel-up shaft (41), and the mounting hole connects the spiral air groove (14) with the cleaning chamber (4).

4. The device for capturing and separating liftable solid particles based on flue gas treatment according to claim 1 is characterized in that: A plurality of layers of circulating air baffles (44) connected to the spiral air grooves (14) are also provided on the inner wall of the cleaning chamber (4); the circulating air baffles (44) are attached to the filter screen (3) and are respectively connected to the spiral air grooves (14) at both ends.

5. The device for capturing and separating liftable solid particles based on flue gas treatment according to claim 1 is characterized in that: The lower end surface of the cover plate (24) is provided with an annular limiting structure, the top of the filter screen (3) is slidably connected to the limiting structure, the sealing groove (11), the limiting structure and the filter screen (3) separate the spiral gas groove (14) from the air duct structure (23), and the gas circulates through the filter screen (3).

6. The device for capturing and separating liftable solid particles based on flue gas treatment according to claim 1 is characterized in that: The upper rotating shaft (21) and the lower rotating shaft (22) have different rotation speeds, and the rotation difference between the upper rotating shaft (21) and the lower rotating shaft (22) changes periodically.

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