Waste gas emission filtering equipment and filtering method for green emission

Abstract

The invention relates to the technical field of waste gas emission, in particular to waste gas emission filtering equipment and a filtering method for green emission. Comprising a rack, a filter bin arranged on the rack and a filter cartridge arranged in the filter bin, and the filter cartridge is used for filtering dust in waste gas; a plurality of groups of filter cartridges are arranged, and are rotationally arranged in the filter bin through a rotary driving module; the first dust removal module is fixedly arranged in the filter bin in a vertical state and is arranged close to a discharge hole in the bottom of the filter bin; the filtering module is horizontally arranged in the filtering bin and is close to a feeding hole in the top of the filtering bin; the suction module cover is arranged on one side of the filtering bin; the first dust removal module is further provided with a cleaning bin capable of longitudinally getting close to or getting away from the filter bin and a high-pressure dust removal element capable of blowing away dust outside the filter cartridge. The filter cartridge can be comprehensively and efficiently dedusted, other filter cartridges cannot be polluted, the dedusting effect is good, and the efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas emission, and in particular to a waste gas emission filtering device and a filtering method for green emission. Background Art

[0002] Pollutants in waste gas mainly include sulfur dioxide, nitrogen oxides, particulate matter, volatile organic compounds and other harmful gases, which not only cause serious pollution to the atmospheric environment, but also bring potential harm to human health. Especially in semiconductor production, the production process involves the use of a variety of chemical reagents and high-temperature reactions. The exhaust gas contains a large amount of volatile organic compounds and acidic gases, such as ammonia and fluoride. If it is directly discharged without effective treatment, it will have a great impact on the surrounding environment. Therefore, for the exhaust gas generated in the semiconductor manufacturing process, efficient exhaust gas emission filtration equipment must be installed in the factory to meet environmental protection requirements and protect the health of workers.

[0003] At present, common waste gas filtration technologies include electrostatic precipitators, bag filters, cartridge pulse filters, wet scrubbers, and activated carbon adsorption devices. Pulse filter cartridge dust collectors have been widely used in semiconductor production workshops due to their high dust removal efficiency. The filter cartridge dust collector uses compressed air pulse cleaning technology to remove particulate matter attached to the filter element by periodically ejecting pulse airflow. It is suitable for treating large-volume, fine-particle waste gas, such as volatile organic compounds and dust in the production process.

[0004] However, the following problems still exist in actual applications: 1. The problem of uneven distribution of pulse airflow: When high-pressure gas enters the dust removal system through the pulse valve, there is a significant difference in the air pressure at both ends of the filter cartridge. The filter cartridge near the air flow inlet has a better cleaning effect, while the cleaning effect at the far end is poor. This uneven distribution will cause the local area of ​​the filter cartridge to be unable to be effectively cleaned. Long-term use will cause local blockage, affect the dust removal efficiency and shorten the life of the filter cartridge. 2. Secondary pollution problem: During the pulse cleaning process, the cleaned dust may fall again onto the filter cartridge below, causing the cleaned part to be contaminated again. This not only increases the maintenance and cleaning frequency of the equipment, but may also cause serious dust accumulation at the bottom of the filter cartridge, hindering the normal circulation of exhaust gas and failing to meet high standards of environmental protection requirements. Especially in industries such as semiconductor production that have extremely high requirements for gas purity, the problem of secondary pollution is particularly prominent. Summary of the invention

[0005] In view of the above problems, an exhaust gas emission filtering device and a filtering method for green emission are provided, by proposing a device that can not only comprehensively and efficiently remove dust from the filter cartridge but also will not pollute other filter cartridges; thereby solving the technical problems of incomplete cleaning, uneven dust removal and secondary pollution of the existing pulse filter cartridge dust collector when cleaning with high-pressure gas.

[0006] In order to solve the problems of the prior art, the present invention provides an exhaust gas emission filtering device, comprising a frame, a filter bin arranged on the frame, and a filter cartridge arranged in the filter bin; the filter cartridge is provided with multiple groups, and the multiple groups of filter cartridges are rotatably arranged in the filter bin through a rotating drive module; a first dust removal module is fixedly arranged in the filter bin and is arranged near the discharge port at the bottom of the filter bin; a filter module is arranged in the filter bin and is arranged near the feed port at the top of the filter bin; a suction module cover is arranged on one side of the filter bin.

[0007] Preferably, the first dust removal module includes a cleaning bin that can be longitudinally approached or moved away from the filter bin and a high-pressure dust removal element that can blow away dust outside the filter cartridge; the cleaning bin is fixedly arranged at the discharge port at the bottom of the filter bin; the high-pressure dust removal element is arranged in the filter bin to remove dust from the filter cartridge.

[0008] Preferably, the two sides of the filter bin are also respectively provided with a first sealing plate and a second sealing plate which can respectively seal the two ends of the filter cartridge located at the first dust removal module; the first sealing plate is arranged on the side close to the suction module; the second sealing plate is arranged on the other side of the filter bin relative to the first sealing plate; the first sealing plate is composed of a first sealing cover plate and a sealing block fixedly arranged on the first sealing cover plate close to one side of the filter bin; the sealing block is used to seal one end of the filter bin close to the first dust removal module.

[0009] Preferably, the second sealing plate is composed of a second sealing cover plate and a sealing ring fixedly arranged on the second sealing cover plate close to the filter chamber; the bottom of the sealing ring is also penetrated by a through hole corresponding to the filter cartridge; the through hole is used to allow the dust removal end of the high-pressure dust removal element to penetrate into the filter cartridge.

[0010] Preferably, the rotation drive module includes a first rotating frame and a second rotating frame capable of installing the filter cartridge; the first rotating frame and the second rotating frame are arranged on both sides of the filter bin for relative rotation; the filter cartridge is arranged across the first rotating frame and the second rotating frame and a plurality of groups are arranged equidistantly along the axis of the first rotating frame and the second rotating frame; the first rotating frame and the second rotating frame are coaxially fixedly connected by a fixed connecting cylinder; the rotation drive is fixedly arranged on the outer wall of the filter bin and the output shaft of the rotation drive passes through the filter bin and is coaxially fixedly connected to the first rotating frame, so as to drive the first rotating frame to rotate.

[0011] Preferably, the first dust removal module also includes a vertical reciprocating drive capable of driving the cleaning bin longitudinally toward or away from the filter cartridge; the vertical reciprocating drive is vertically fixedly disposed in a dust bin disposed at the outlet of the filter bin; the cleaning bin is slidably disposed in the middle of the dust bin.

[0012] Preferably, a dust discharge hole is also provided at the bottom of the cleaning bin; and a suction end of an external dust suction device is connected to the dust discharge hole.

[0013] Preferably, the filter module comprises a filter screen capable of covering the feed inlet of the filter bin and a driving element capable of driving the filter screen to circulate and roll at the feed inlet of the filter bin.

[0014] Preferably, the high-pressure dust removal element includes a high-pressure nozzle capable of longitudinally moving along the axis of the filter cartridge, and the high-pressure nozzle is driven by a linear reciprocating driver arranged at the end thereof.

[0015] A method for filtering green emissions of an exhaust gas emission filtering device comprises the following steps:

[0016] S1: Introduce external exhaust gas into the air inlet of the filter chamber through the air guide device; after the exhaust gas enters, the external suction device continuously sucks the exhaust gas through the suction module, causing the exhaust gas to continuously flow toward the filter cartridge group;

[0017] S2: When the exhaust gas flows toward the filter cartridge, the first conductive roller is driven to rotate, which in turn drives the filter screen to circulate, and the filter screen is used to continuously intercept and clean the larger particulate pollutants in the exhaust gas.

[0018] S3: The exhaust gas then passes through the filter screen and is transmitted toward the filter cartridge. Under the continuous suction guidance of the external suction device through the suction module, the exhaust gas in the filter chamber passes through the filter cartridge and is transmitted from the end of the filter cartridge toward the suction module. During the transmission process, small particles in the exhaust gas are filtered by the filter cartridge and enter the filter cartridge.

[0019] S4: When there is a lot of dust accumulated on the outer wall of the filter cartridge, the filter cartridge to be cleaned is driven to the dust removal area by the rotating drive module; at this time, the cleaning chamber covers the filter cartridge under the drive of the vertical reciprocating drive, and the high-pressure dust removal element is started to comprehensively clean the inside of the filter cartridge; the removed dust is introduced into the outside through the dust exhaust hole and discharged through the external dust suction equipment.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. An exhaust gas emission filtering device designed by the present invention can realize comprehensive, efficient and automatic dust removal of the filter barrel without generating secondary pollution by setting the synergistic effect of the filtering module, the first dust removal module and the rotating drive module, and with the cooperation of the suction module and the collecting bin, thereby ensuring the continuous filtering efficiency of the filter cartridge and the long-term stable operation of the equipment, and effectively solving the technical problems of incomplete cleaning, uneven dust removal and secondary pollution of the existing pulse filter cartridge dust collector when cleaning by high-pressure gas.

[0022] 2. The filter module designed by the present invention, by arranging a high-pressure injection pipe and a dust cover combination, cooperates with a flexible filter and a servo motor drive system, which can not only effectively filter large particles of dust, but also has the function of automatically removing accumulated dust, thus avoiding the problem of dust accumulation affecting the performance of the filter; ensuring the continuous filtering efficiency of the filter, reducing the frequency of filter cleaning and maintenance, and ensuring the continuous stability of the equipment operation.

[0023] 3. The first dust removal module designed in the present invention, through the U-shaped design of the cleaning chamber and the precise control of the vertical reciprocating drive, can effectively isolate the filter cartridge during dust removal, form an independent dust removal area, and avoid secondary contamination of dust; at the same time, in conjunction with the high-pressure dust removal element, it can thoroughly clean the outer surface of the filter cartridge and realize independent collection of dust through the cleaning chamber.

[0024] 4. The rotary drive module designed in the present invention can, by setting the synergistic effect of its internal components, on the one hand, make the filter barrel rotate evenly, so that the exhaust gas is evenly distributed on its surface, thereby improving the filtration efficiency; on the other hand, it can realize the precise displacement of the filter barrel to be cleaned, so as to facilitate the first dust removal module to clean it efficiently and avoid incomplete cleaning and dust accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional exhaust gas filtration device Figure 1 .

[0026] Figure 2 It is a three-dimensional exhaust gas filtration device Figure 2 .

[0027] Figure 3 It is a top view of an exhaust emission filtering device.

[0028] Figure 4 yes Figure 3 Stereoscopic cross-sectional view of the section at AA.

[0029] Figure 5 yes Figure 4 A partial enlarged view of point B.

[0030] Figure 6 yes Figure 4 A partial enlarged view of point C.

[0031] Figure 7 A side view of an exhaust emission filtering device.

[0032] Figure 8 yes Figure 7 Cross-sectional view at DD.

[0033] Fig. 9 This is a three-dimensional diagram of the partial structure of the exhaust gas emission filtration equipment without the frame and the aggregate bin. Figure 1 .

[0034] Fig.10 This is a three-dimensional diagram of the partial structure of the exhaust gas emission filtration equipment without the frame and the aggregate bin. Figure 2 .

[0035] The numbers in the figure are:

[0036] 1- rack;

[0037] 2-filter bin; 21-first sealing plate; 211-first sealing cover plate; 212-sealing block; 22-second sealing plate; 221-second sealing cover plate; 222-sealing ring; 223-through hole; 23-dust bin;

[0038] 3-Filter cartridge;

[0039] 4-rotation drive module; 41-first rotating frame; 42-second rotating frame; 43-fixed connecting cylinder; 44-rotation drive;

[0040] 5-first dust removal module; 51-cleaning chamber; 511-vertical reciprocating drive; 512-dust discharge hole; 52-high-pressure dust removal element; 521-high-pressure nozzle; 522-linear reciprocating drive; 523-electric telescopic rod; 524-connecting frame;

[0041] 6-filter module; 61-filter screen; 62-driving element; 621-first conduction roller; 622-second conduction roller; 623-servo motor; 63-dust cover; 64-second dust removal module; 641-high-pressure injection pipe;

[0042] 7- Aggregate silo;

[0043] 8- Suction module. DETAILED DESCRIPTION

[0044] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] See also Figures 1 to 10As shown: an exhaust gas emission filtering device comprises a frame 1, a filter bin 2 arranged on the frame 1 and a filter cartridge 3 arranged in the filter bin 2, the filter cartridge 3 is used to filter dust in the exhaust gas; the filter cartridge 3 is provided with multiple groups, and the multiple groups of filter cartridges 3 are rotated and arranged in the filter bin 2 through a rotating drive module 4; the first dust removal module 5 is fixedly arranged in the filter bin 2 in a vertical state and is arranged near the discharge port at the bottom of the filter bin 2; the filter module 6 is horizontally arranged in the filter bin 2 and is arranged near the feed port at the top of the filter bin 2; the suction module 8 cover is arranged on one side of the filter bin 2; the first dust removal module 5 is also provided with a cleaning bin 51 that can longitudinally approach or move away from the filter bin 2 and a high-pressure dust removal element 52 that can blow away dust outside the filter cartridge 3; when it is necessary to automatically clean the filter cartridge 3, the rotating drive module 4 is driven to adjust the filter cartridge 3 to be filtered to the first dust removal module 5.

[0046] When it is necessary to filter the dust in the exhaust gas, first connect the air outlet with the air inlet of the filter chamber 2 through the external air guide device, and guide the exhaust gas to be filtered into the filter chamber 2; after the exhaust gas enters the filter chamber 2, it is conducted toward the air outlet along the air flow direction; during the conduction process, the exhaust gas will pass through the filter module 6 and the filter cartridge 3 in sequence, respectively realizing primary large-particle dust filtration and more refined secondary small-particle dust filtration; during the dust filtration process, the suction module 8 is in continuous action to extract the dust-free exhaust gas in the filter chamber 2 from the filter chamber 2 and conduct it toward the remaining equipment, so as to achieve an effective guiding effect on the exhaust gas; due to long-term use, a large amount of dust will gradually accumulate on the outer surface of the filter cartridge 3, resulting in a weakened filtering effect; therefore, in order to ensure continuous filtration efficiency while effectively cleaning the filter cartridge 3, the rotary drive module 4 can be driven to move part of the filter cartridge 3 to the first dust removal module 5 for cleaning; specifically , by real-time detection of the continuous output air pressure of the first dust removal module 5 to the filter cartridge 3 located in the dust removal area, it is possible to determine whether the filter cartridge is blocked, and it is also possible to achieve continuous cleaning by rotating the filter cartridge 3 at a fixed time; the dust removal process is jointly performed by the cleaning chamber 51 and the high-pressure dust removal element 52 in the first dust removal module 5; first, the cleaning chamber 51 drives the cover to the outside of the filter cartridge 3 to be cleaned, temporarily wraps it and limits it; then, the high-pressure dust removal element 52 is started, and moves axially from one end of the filter cartridge 3 to the other end, applying a high-pressure airflow to completely remove the dust on the surface of the filter cartridge 3; and the dust removed during the high-pressure cleaning process is all introduced into the cleaning chamber 51, which avoids the dust from flying and contaminating other filter cartridges 3 when cleaning a certain filter cartridge 3, thereby forming secondary pollution; through this cyclic cleaning method, all filter cartridges 3 can be fully dusted in turn to ensure the continuous and efficient operation of the equipment and effectively improve the environmental protection performance of exhaust gas emissions;

[0047] By setting up the rotating drive module 4 and the synergistic effect of the cleaning chamber 51 and the high-pressure dust removal element 52, the filter cartridge 3 can be cleaned efficiently and automatically without stopping the equipment. This avoids the problem of secondary pollution caused by flying dust during cleaning of traditional dust removal devices, thereby ensuring the continuous filtering efficiency of the filter cartridge 3 and the long-term stable operation of the equipment.

[0048] See also Figure 6 As shown: the first dust removal module 5 includes a cleaning chamber 51 and a high-pressure dust removal element 52; the cleaning chamber 51 is fixedly arranged at the bottom discharge port of the filter chamber 2; the high-pressure dust removal element 52 is arranged in the filter chamber 2 to remove dust from the filter cartridge 3.

[0049] The cleaning chamber 51 is used to form a dust removal area at the bottom of the filter chamber 2 and form an independent dust removal space, so as to prevent dust from contaminating other filter cartridges 3 during the dust removal process. The high-pressure dust removal element 52 is used to remove dust from the filter cartridge 3 located in the dust removal area. The filter cartridge 3 is arranged in an inclined state in the filter chamber 2, and the high end is arranged close to the suction module 8. The figure is only used for illustration. The inclined high end of the filter cartridge 3 is arranged toward the suction module 8, and the inclined low end of the filter cartridge 3 is arranged toward the first dust removal module 5. By designing the filter cartridge 3 as an inclined layout, there are significant advantages in the exhaust gas flow conduction and the overall filtration efficiency. First, the inclined filter cartridge 3 helps the exhaust gas to flow naturally along the inclined direction and quickly approach the suction module 8. Improve the speed and efficiency of air flow conduction; during the exhaust gas conduction process, the inclined design prevents excessive accumulation of dust on the surface of the filter cartridge 3; due to the effect of the inclination angle, the dust naturally slides to the bottom of the filter bin 2 under the action of its own weight and airflow, reducing the continuous accumulation of dust on the surface of the filter cartridge 3, thereby avoiding the blockage and reduced filtration efficiency problems that are prone to occur in the traditional vertical setting; in addition, the inclined design also ensures that a larger surface area of ​​the filter cartridge 3 participates in the filtration process, reducing local loads and extending the service life of the filter cartridge 3; more importantly, the dust in the exhaust gas will not stay outside the filter cartridge 3 for a long time, and can be discharged more quickly to avoid blockage; this inclined design ensures the stability and reliability of the equipment operation;

[0050] The design of the inclined filter cartridge 3 optimizes the airflow conduction path, allowing the exhaust gas to flow more efficiently and approach the suction module 8; at the same time, the design reduces the accumulation of dust on the outside of the filter cartridge 3, avoids clogging and reduced filtration time, and significantly improves the filtration efficiency.

[0051] See also Figure 2 and Figure 8As shown: the two sides of the filter bin 2 are also respectively provided with a first sealing plate 21 and a second sealing plate 22 which can respectively seal the two ends of the filter cartridge 3 located at the first dust removal module 5; the first sealing plate 21 is arranged on the side close to the suction module 8; the second sealing plate 22 is arranged on the other side of the filter bin 2 relative to the first sealing plate 21; the first sealing plate 21 is composed of a first sealing cover plate 211 and a sealing block 212 fixedly arranged on the first sealing cover plate 211 close to one side of the filter bin 2; the sealing block 212 is used to seal one end of the filter bin 2 close to the first dust removal module 5.

[0052] When the filter cartridge 3 is driven by the rotating drive module 4 to move into the first dust removal module 5 in the dust removal area; at this time, the two ends of the filter cartridge 3 located in the dust removal area will contact the first sealing plate 21 and the second sealing plate 22 respectively; and the ends thereof will be blocked by the first sealing plate 21 and the second sealing plate 22 respectively, so as to ensure that the dust removal effect will not be affected by the openings at the two ends of the filter cartridge 3 in the dust removal state; at this time, the filter cartridge 3 near the end of the first sealing plate 21 will contact the sealing block 212 and achieve the corresponding blocking effect through the sealing block 212; because the sealing block 212 only The filter cartridge 3 at the dust removal position can be blocked; it will not affect the normal suction work of the suction module 8; the suction module 8 is a rectangular shell whose cover is arranged outside the first sealing cover plate 211, and the rectangular shell is connected to the first sealing cover plate 211; the outer wall of the rectangular shell is also provided with a pipeline that can be connected to an external suction device, so as to achieve the effect of continuously sucking the air in the filter bin, and then guide the flow of exhaust gas entering through the feed port of the filter bin 2, so that the exhaust gas passes through the filter module 6 and the filter cartridge 3 one by one, thereby achieving filtering of the exhaust gas.

[0053] See also Fig. 9 As shown: the second sealing plate 22 is composed of a second sealing cover plate 221 and a sealing ring 222 fixedly arranged on the second sealing cover plate 221 close to the filter chamber 2; the bottom of the sealing ring 222 is also penetrated by a through hole 223 corresponding to the filter cartridge 3; the through hole 223 is used to allow the dust removal end of the high-pressure dust removal element 52 to penetrate into the filter cartridge 3.

[0054] Since the second sealing plate 22 is provided with a sealing ring 222 near the side of the filter bin 2; the sealing ring 222 is fully in contact with the ends of the multiple groups of filter cartridges 3; thereby, when the exhaust gas is sucked and guided by the suction module 8, the dust-free exhaust gas is all discharged through one end of the filter cartridge 3 near the suction module 8, and there will be no problem of unsatisfactory filtering effect caused by the other end of the filter cartridge 3 being unblocked and easily inhaling external air; since the bottom of the sealing ring 222 is also penetrated by a through hole 223 corresponding to the filter cartridge, when it is necessary to remove the dust on the outer wall of the filter cartridge 3, at this time, it is only necessary to drive the high-pressure dust removal element 52 to operate, so that the dust removal end thereof penetrates into the filter cartridge 3 from the through hole 223, thereby achieving the effect of removing dust from the filter cartridge 3 from the inside out by the high-pressure dust removal element 52.

[0055] See also Figure 8 and Fig. 9 As shown: the rotation drive module 4 includes a first rotating frame 41 and a second rotating frame 42 capable of installing the filter cartridge 3; the first rotating frame 41 and the second rotating frame 42 are relatively rotatably arranged on both sides of the filter bin 2; the filter cartridge 3 is arranged across the first rotating frame 41 and the second rotating frame 42 and a plurality of groups are equidistantly arranged along the circumferential direction of the rotating frame axis; the first rotating frame 41 and the second rotating frame 42 are coaxially fixedly connected by a fixed connecting tube 43; a rotation driver 44 is fixedly arranged on the outer wall of the filter bin 2 to drive the first rotating frame 41 to rotate.

[0056] When it is necessary to drive multiple groups of filter cartridges 3 to rotate in the filter bin 2, so as to realize dust removal of multiple groups of filter cartridges 3 one by one, firstly, an external power supply is connected to drive the rotary driver 44 to operate, and the output shaft of the rotary driver 44 rotates to drive the first rotating frame 41 to rotate. The first rotating frame 41 drives the second rotating frame 42 to rotate synchronously through the fixed connecting cylinder 43 in the rotating state, so as to realize the effect of synchronously driving multiple groups of filter cartridges 3 to rotate. When it is necessary to remove dust from the filter cartridges 3, it is only necessary to drive multiple groups of filter cartridges 3 to pass through the dust removal area intermittently. This design can not only make the exhaust gas evenly distributed on the surfaces of different filter cartridges 3 during the filtering process, but also during dust removal, the rotary driving module 4 can adjust each filter cartridge 3 to the cleaning position in turn, so as to facilitate the first dust removal module 5 to clean it efficiently.

[0057] Through the coordinated rotation of the first rotating frame 41 and the second rotating frame 42, the rotating drive module 4 can drive the multiple filter cartridges 3 to rotate evenly, so that the exhaust gas is evenly distributed on the surfaces of different filter cartridges 3, thereby improving the filtration efficiency; at the same time, during the cleaning process of the filter cartridge 3, the rotating drive module 4 can also accurately move the filter cartridge 3 to the cleaning position, thereby facilitating the first dust removal module 5 to achieve efficient cleaning, thereby avoiding the problems of incomplete cleaning and dust accumulation in traditional filtering devices.

[0058] See also Figure 2 , Figure 6 and Fig. 9 As shown: the first dust removal module 5 also includes a vertical reciprocating drive 511 capable of driving the cleaning bin 51 to longitudinally approach or move away from the filter cartridge 3; the vertical reciprocating drive 511 is vertically fixedly arranged in the dust collecting bin 23 arranged at the discharge port of the filter bin 2; the cleaning bin 51 is slidably arranged in the middle of the dust collecting bin 23; the dust collecting bin 23 is used to collect heavier dust particles in the filter bin 2.

[0059] A collection bin 7 is also provided at the outlet of the dust collecting bin 23, and the collection bin 7 is used to uniformly collect the large particles of dust gathered through the dust collecting bin 23;

[0060] The cleaning chamber 51 is U-shaped and has an arc surface design on the top that fits with the outer wall of the fixed connection cylinder 43; this design enables the cleaning chamber 51 to effectively wrap the filter cylinder 3 located in the dust removal area when closed, forming an independent cleaning area; when closed dust removal is required, the vertical reciprocating drive 511 is first driven by an external power supply, and the vertical reciprocating drive 511 is preferably a driving screw structure to ensure the stability and accuracy of the action; driven by the vertical reciprocating drive 511, the cleaning chamber 51 penetrates into the interior of the filter chamber 2 longitudinally, and gradually wraps the filter cylinder 3 located in the dust removal area until the arc surface opened on the top fits with the outer wall of the fixed connection cylinder 43, isolating it into an independent dust removal area; at this time, the filter cylinder 3 is cleaned in conjunction with the high-pressure dust removal element 52, and the high-pressure airflow can effectively remove the dust attached to the outer surface of the filter cylinder 3, and all of it is introduced into the cleaning chamber 51 for centralized collection; due to the closed design of the cleaning chamber 51, the removed dust will not scatter or fly to other areas of the filter chamber 2, thereby avoiding secondary pollution caused by dust removal;

[0061] Through the U-shaped design of the cleaning chamber 51 and the precise control of the vertical reciprocating drive 511, the filter cartridge 3 can be effectively isolated during dust removal to form an independent dust removal area to avoid secondary contamination of dust; at the same time, in conjunction with the high-pressure dust removal element 52, the outer surface of the filter cartridge 3 can be thoroughly cleaned, and independent dust collection can be achieved through the cleaning chamber 51.

[0062] See also Figure 6 and Fig. 9 As shown, a dust discharge hole 512 is also provided at the bottom of the cleaning chamber 51 for discharging the dust collected inside; and a suction end of an external dust suction device is connected to the dust discharge hole 512 .

[0063] A dust discharge hole 512 is provided at the bottom of the cleaning bin 51 to discharge the dust collected inside; the dust discharge hole 512 is connected to an external suction device, and when dust enters the cleaning bin 51 during the dust removal process, the suction device can discharge the collected dust through the dust discharge hole 512 to avoid dust accumulation in the cleaning bin 51, thereby ensuring the continuity and efficiency of the dust removal process; the suction device connected to the dust discharge hole 512 only performs suction when a lot of dust accumulates in the cleaning bin 51; this design helps to optimize the cleaning process, reduce manual intervention, and realize automated dust removal inside the cleaning bin 51; the use of an external dust suction device enables dust to be quickly discharged from the dust discharge hole 512, thereby keeping the cleaning bin 51 clean and avoiding the impact of dust accumulation on equipment performance.

[0064] See also Figure 5 As shown, the filter module 6 includes a filter screen 61 capable of covering the feed inlet of the filter chamber 2 and a driving element 62 capable of driving the filter screen 61 to circulate and roll at the feed inlet of the filter chamber 2 .

[0065] The filter module 6 also includes a second dust removal module 64 that can blow away the dust filtered by the filter 61. The second dust removal module 64 consists of a high-pressure injection pipe 641 horizontally arranged below the filter 61 and an air supply pipeline connected thereto; the high-pressure injection pipe 641 blows away the dust attached to the filter 61 through a strong airflow to ensure the continuous and effective operation of the filter 61; at the same time, the outside of the high-pressure injection pipe 641 is also covered with a dust cover 63 to prevent dust from flying around during the blowing process and causing secondary pollution; the filter 61 is a large-caliber flexible filter 61 that can flexibly perform primary filtration. Driven by the drive element 62, the filter 61 rolls horizontally and cyclically at the feed port of the filter bin 2, thereby achieving continuous filtration of larger particles in the exhaust gas;

[0066] The driving element 62 is composed of a first conductive roller 621 and a second conductive roller 622 arranged on both sides of the feed port of the filter bin 2. The filter screen 61 is installed between the two conductive rollers. The servo motor 623 drives the first conductive roller 621 to drive the filter screen 61 to rotate. When the exhaust gas enters the filter bin 2, the servo motor 623 is driven to operate, driving the first conductive roller 621 to rotate and driving the filter screen 61 to roll, so that larger particles in the exhaust gas are preliminarily filtered through the flexible filter screen 61, thereby achieving a primary filtering effect.

[0067] By setting up a combination of a high-pressure jet pipe 641 and a dust cover 63, in conjunction with a flexible filter screen 61 and a servo motor 623 drive system, it is not only possible to effectively filter large dust particles, but also has an automatic dust removal function, thereby avoiding the problem of dust accumulation affecting the performance of the filter screen 61; ensuring the continuous filtering efficiency of the filter screen 61 and reducing the frequency of cleaning and maintenance.

[0068] See also Fig.10As shown: the high-pressure dust removal element 52 includes a high-pressure nozzle 521 that can move longitudinally along the axis of the filter cartridge 3, and the high-pressure nozzle 521 is driven by a linear reciprocating driver 522 arranged at its end.

[0069] The high-pressure dust removal element 52 also includes an electric telescopic rod 523, which is fixedly arranged at the end of the high-pressure nozzle 521, and is used to drive the high-pressure nozzle 521 to move axially in the filter cartridge 3, thereby achieving an all-round dust removal effect inside the filter cartridge 3; the high-pressure nozzle 521 is provided with multiple groups, corresponding to the filter cartridges 3 located in the dust removal area, so as to ensure that each filter cartridge 3 can be accurately cleaned by an independent high-pressure nozzle 521;

[0070] The linear reciprocating drive 522 adopts an electric push rod, which is horizontally fixed to one side of the filter bin 2 through a fixing frame; the driving end of the electric push rod is connected to the electric telescopic rod 523 through a connecting frame 524, ensuring that the high-pressure nozzle 521 can be flexibly driven to axially insert into the filter cartridge 3; after the filter cartridge 3 is driven to the dust removal area by the rotating drive module 4, the electric push rod drives the high-pressure nozzle 521 to enter the filter cartridge 3 through coaxial alignment with the through hole 223 on the second sealing plate 22 in the dust removal module, and cleans along the axis of the filter cartridge 3 through the reciprocating motion of the electric telescopic rod 523, thereby realizing comprehensive dust removal from the inside to the outside;

[0071] By setting up multiple groups of high-pressure nozzles 521 and electric telescopic rods 523, it can be ensured that each filter cartridge 3 can obtain an independent and precise cleaning effect; the combined action of the electric push rod and the electric telescopic rod 523 enables the high-pressure nozzle 521 to flexibly move along the axis of the filter cartridge 3, thereby achieving comprehensive cleaning of the inside and outside of the filter cartridge 3, thereby greatly improving the dust removal efficiency and avoiding the reduction of filtering effect due to incomplete local cleaning.

[0072] A method for filtering green emissions of an exhaust gas emission filtering device is applied to an exhaust gas emission filtering device, comprising the following steps:

[0073] S1: Introduce the external exhaust gas into the air inlet of the filter chamber 2 through the air guide device; after the exhaust gas enters, the external suction device continuously sucks the exhaust gas through the suction module 8, so that the exhaust gas continues to flow toward the direction of the filter cartridge 3 group;

[0074] S2: When the exhaust gas flows toward the filter cartridge 3, the first conductive roller 62 is first driven to rotate, and the filter screen 61 is synchronously driven to circulate, and the filter screen 61 that circulates is used to continuously intercept and clean the larger particulate pollutants in the exhaust gas;

[0075] S3: The exhaust gas then passes through the filter screen 61 and is transmitted toward the filter cartridge 3. Under the continuous suction guidance of the external suction device through the suction module 8, the exhaust gas in the filter chamber 2 passes through the filter cartridge 3 and is transmitted from the end of the filter cartridge 3 toward the suction module 8. During the transmission process, small particulate matter in the exhaust gas is filtered by the filter cartridge 3 and enters the filter cartridge 3.

[0076] S4: When there is a lot of dust on the outer wall of the filter cartridge 3, the filter cartridge 3 to be cleaned is driven to the dust removal area by the rotating drive module 4; at this time, the cleaning chamber 51 covers the filter cartridge 3 under the drive of the vertical reciprocating drive 511, and the high-pressure dust removal element 52 is started to fully clean the inside; the removed dust is introduced into the outside through the dust discharge hole 512 and discharged through the external dust suction device. This effectively avoids the problem of secondary contamination of other filter cartridges 3 when cleaning the filter cartridge 3.

[0077] The present invention can not only fully and efficiently remove dust from the filter cartridge but also will not pollute other filter cartridges, and has good dust removal effect and high efficiency.

[0078] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An exhaust gas emission filtering device, characterized in that: The invention comprises a frame (1), a filter chamber (2) arranged on the frame (1), and a filter cartridge (3) arranged in the filter chamber (2); the filter cartridge (3) is provided with a plurality of groups, and the plurality of groups of filter cartridges (3) are rotatably arranged in the filter chamber (2) through a rotary drive module (4); a first dust removal module (5) is fixedly arranged in the filter chamber (2) and arranged near the discharge port at the bottom of the filter chamber (2); a filter module (6) is arranged in the filter chamber (2) and arranged near the feed port at the top of the filter chamber (2); and a suction module (8) cover is arranged on one side of the filter chamber (2).

2. The exhaust gas emission filtering device according to claim 1, characterized in that: The first dust removal module (5) comprises a cleaning chamber (51) capable of longitudinally approaching or moving away from the filter chamber (2) and a high-pressure dust removal element (52) capable of blowing away dust outside the filter cartridge (3); the cleaning chamber (51) is fixedly arranged at the bottom discharge port of the filter chamber (2); the high-pressure dust removal element (52) is arranged in the filter chamber (2) to remove dust from the filter cartridge (3).

3. The exhaust gas emission filtering device according to claim 1, characterized in that: A first sealing plate (21) and a second sealing plate (22) are respectively provided on both sides of the filter bin (2) and are capable of respectively sealing the two ends of the filter cartridge (3) located at the first dust removal module (5); the first sealing plate (21) is arranged on a side close to the suction module (8); the second sealing plate (22) is arranged on the other side of the filter bin (2) relative to the first sealing plate (21); the first sealing plate (21) is composed of a first sealing cover plate (211) and a sealing block (212) fixedly arranged on the first sealing cover plate (211) close to the side of the filter bin (2); the sealing block (212) is used to seal one end of the filter bin (2) close to the first dust removal module (5).

4. The exhaust gas emission filtering device according to claim 3, characterized in that: The second sealing plate (22) is composed of a second sealing cover plate (221) and a sealing ring (222) fixedly arranged on the second sealing cover plate (221) near the filter chamber (2); the bottom of the sealing ring (222) is also penetrated by a through hole (223) corresponding to the filter cartridge (3); the through hole (223) is used to allow the dust removal end of the high-pressure dust removal element (52) to penetrate into the filter cartridge (3).

5. The exhaust gas emission filtering device according to claim 1, characterized in that: The rotary drive module (4) comprises a first rotating frame (41) and a second rotating frame (42) capable of mounting the filter cartridge (3); the first rotating frame (41) and the second rotating frame (42) are arranged on both sides of the filter chamber (2) to rotate relative to each other; the filter chamber (3) is arranged across the first rotating frame (41) and the second rotating frame (42) and a plurality of groups are arranged equidistantly along the axis of the first rotating frame (41) and the second rotating frame (42); the first rotating frame (41) and the second rotating frame (42) are coaxially fixedly connected via a fixed connection cylinder (43); a rotary drive (44) is fixedly arranged on the outer wall of the filter chamber (2) and an output shaft of the rotary drive (44) passes through the filter chamber (2) and is coaxially fixedly connected to the first rotating frame (41) to drive the first rotating frame (41) to rotate.

6. The exhaust gas emission filtering device according to claim 2, characterized in that: The first dust removal module (5) further comprises a vertical reciprocating driver (511) capable of driving the cleaning bin (51) to longitudinally approach or move away from the filter cartridge (3); the vertical reciprocating driver (511) is vertically fixedly arranged in a dust collecting bin (23) arranged at the discharge port of the filter bin (2); the cleaning bin (51) is slidably arranged in the middle of the dust collecting bin (23).

7. The exhaust gas emission filtering device according to claim 6, characterized in that: The bottom of the cleaning chamber (51) is also provided with a dust discharge hole (512); the suction end of the external dust suction device is connected to the dust discharge hole (512).

8. The exhaust gas emission filtering device according to claim 1, characterized in that: The filter module (6) comprises a filter screen (61) capable of covering the feed inlet of the filter bin (2) and a driving element (62) capable of driving the filter screen (61) to circulate and roll at the feed inlet of the filter bin (2).

9. The exhaust gas emission filtering device according to claim 2, characterized in that: The high-pressure dust removal element (52) comprises a high-pressure nozzle (521) capable of longitudinally moving along the axis of the filter cartridge (3); the high-pressure nozzle (521) is driven by a linear reciprocating driver (522) arranged at the end thereof.

10. A method for filtering green emissions of an exhaust gas emission filtering device, applied to an exhaust gas emission filtering device as claimed in any one of claims 1 to 9, comprising the following steps: S1: introducing external exhaust gas into the air inlet of the filter chamber (2) through an air guide device; after the exhaust gas enters, the external suction device continuously sucks the exhaust gas through a suction module (8), causing the exhaust gas to continuously flow toward the filter cartridge (3) group; S2: When the exhaust gas flows toward the filter cartridge (3), the first conductive roller (62) is first driven to rotate, and the filter screen (61) is synchronously driven to circulate, and the circulated filter screen (61) is used to continuously intercept and clean the larger particle pollutants in the exhaust gas; S3: The exhaust gas then passes through the filter screen (61) and is transmitted toward the filter cartridge (3). Under the continuous suction guidance of the external suction device through the suction module (8), the exhaust gas in the filter chamber (2) passes through the filter cartridge (3) and is transmitted from the end of the filter cartridge (3) toward the suction module (8). During the transmission process, small particles in the exhaust gas are filtered by the filter cartridge (3) and enter the filter cartridge (3); S4: When a lot of dust accumulates on the outer wall of the filter cartridge (3), the filter cartridge (3) to be cleaned is driven to move to the dust removal area by the rotating drive module (4); at this time, the cleaning chamber (51) covers the filter cartridge (3) under the drive of the vertical reciprocating drive (511), and the high-pressure dust removal element (52) is started to perform a comprehensive cleaning of the interior thereof; the removed dust is introduced to the outside through the dust discharge hole (512) and discharged through the external dust suction equipment.

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