Flue gas filtering structure capable of reducing pressure on filter element

Abstract

The present application relates to the technical field of flue gas filtration, in particular to a flue gas filtration structure capable of reducing the pressure on the filter core. The structure comprises a filter part, which includes an outer tube and a filter core cylinder, the filter core cylinder is arranged in the outer tube, and the bottom of the filter core cylinder is sealed; the structure further comprises a first booster part and a second booster part. In the present application, the narrow gap is focused, and the energy loss of the high-speed airflow due to lateral expansion during diffusion is reduced. Finally, the high-speed airflow flows out of the gap in parallel to the axis of the filter core cylinder, so that the high-speed airflow does not exert pressure on the filter core cylinder, thereby reducing the pressure resistance requirement of the filter core cylinder and prolonging the service life of the filter core cylinder. In addition, the second fan can make the air containing flue gas in the chamber pass through the filter core cylinder for filtration, and then form clean airflow in the filter core cylinder flowing to the top channel, and finally be efficiently discharged to the top environment through the top channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas filtration, in particular to a flue gas filtration structure with independent air suction and exhaust for reducing pressure on filter core. BACKGROUND

[0002] Nowadays, some flue gas filtration devices are arranged in welding or indoor construction environment, and most of these devices use filter core to filter particles, and flexibility is considered, and the devices are very small, at this time, in order to ensure the collection capacity of flue gas, a high-pressure fan is used to collect and directly blow the collected flue gas into the filter core.

[0003] However, under the continuous high-pressure environment, the physical structure of the filter core may gradually fatigue, thereby shortening the service life. SUMMARY

[0004] The present application aims to provide a flue gas filtration structure for reducing pressure on filter core to solve the problem of short service life caused by high pressure on filter core.

[0005] To achieve the above-mentioned purpose, a flue gas filtration structure for reducing pressure on filter core is provided, which comprises a filter part, the filter part comprises an outer pipe and a filter core barrel, the filter core barrel is arranged in the outer pipe, and the bottom of the filter core barrel is sealed.

[0006] It also comprises a first booster part and a second booster part, the first booster part and the second booster part are arranged at the bottom and the top of the outer pipe respectively.

[0007] The first booster part is a high-pressure part or a low-pressure part, which is used to input air flow into the outer pipe.

[0008] The second booster part is a low-pressure part, which is used to output the air filtered in the filter core barrel to the outside.

[0009] Among them, the first booster part is suspended during use.

[0010] As a further improvement of the present technical solution, a bottom channel is arranged in the first booster part along the axial direction thereof and communicates with the outer pipe, and a first fan is arranged in the bottom channel.

[0011] A top channel is arranged in the second booster part along the axial direction thereof and directly communicates with the filter core barrel, and a second fan is arranged in the top channel.

[0012] Among them, the first fan is a high-pressure fan or a low-pressure fan.

[0013] The second fan is a low-pressure fan.

[0014] As a further improvement of the technical solution, the airflow blown by the first fan passes between the outer tube and the filter cartridge through parallel to the axis of the filter cartridge.

[0015] As a further improvement of the technical solution, the first booster part includes a base and a bottom cover arranged at the bottom of the base, and the first fan is arranged in the bottom cover.

[0016] An inner ring plate is arranged in the base, the bottom of the inner ring plate is fixedly connected to the inner wall of the base, and the top of the inner ring plate extends into the cavity between the outer tube and the filter cartridge.

[0017] A support plate is arranged outside the bottom cover.

[0018] As a further improvement of the technical solution, the second booster part includes a top cover and a top cover, and the top cover is arranged at the top of the filter cartridge, and the second fan is arranged in the top cover.

[0019] The top cover is detachably connected to the outer tube.

[0020] As a further improvement of the technical solution, a sealing head is arranged at the bottom of the filter cartridge, and the sealing head is a conical structure with the head downward.

[0021] As a further improvement of the technical solution, a plurality of side grooves are arranged outside the outer tube, a filter plate is arranged in the side groove, and the filter plate is a grid structure.

[0022] As a further improvement of the technical solution, a plurality of accommodation grooves are arranged on the side wall outside the bottom cover, and a connecting block is fixedly connected to the inner lower wall of the accommodation groove.

[0023] A support leg is arranged in the accommodation groove, and a sliding groove slidably connected to the connecting block is arranged on the support leg in the vertical state in the vertical direction, and the top end of the sliding groove is bent inwardly in the accommodation groove.

[0024] In the first attitude, the support leg is accommodated in the accommodation groove.

[0025] In the second attitude, the support leg forms a supporting leg after being unfolded.

[0026] As a further improvement of the technical solution, a fixing ring is arranged in the filter cartridge, and the filter cartridge is attached to the inner ring plate under the support of the fixing ring.

[0027] As a further improvement of the technical solution, a plurality of sliding rods are arranged inside the inner ring plate, a magnetic plate is slidably connected to the sliding rod, the magnetic plate is fixedly connected to the filter cartridge, and a variable electromagnetic coil is arranged in the inner ring plate.

[0028] The electromagnetic coil generates a magnetic property different from that of the magnetic plate, so that the magnetic plate drives the filter cartridge to be close to the inner ring plate.

[0029] On the sealing head, a mating ring is provided on the outside of the filter element cylinder;

[0030] The direction of the current in the electromagnetic coil changes, generating the same magnetism, which creates a repulsive force, causing the magnetic plate to move away from the inner ring plate and eventually stop above the docking ring and fit against it.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] In this flue gas filtration structure that reduces the pressure on the filter element, the narrow gap focuses the airflow, reducing the energy lost by the high-speed airflow due to lateral expansion during diffusion. Ultimately, the high-speed airflow flows out of the gap parallel to the axis of the filter element cylinder. In this way, the high-speed airflow does not exert pressure on the filter element cylinder, reducing the pressure on the filter element cylinder and extending its service life.

[0033] At the same time, by taking advantage of the velocity difference between the high-speed airflow and the outside of the side channel, the air containing flue gas outside the side channel is forced into the cavity between the outer pipe and the filter cartridge. At this time, the second fan can use a small suction force to make the air containing flue gas in the cavity filter through the filter cartridge, and then form a clean airflow flowing towards the top channel inside the filter cartridge. Finally, under the action of the second fan, the clean airflow is efficiently discharged into the top environment through the top channel. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is an exploded view of the filter structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the base structure of the present invention;

[0037] Figure 4 This is a schematic diagram of the bottom cover structure of the present invention;

[0038] Figure 5 This is a schematic diagram illustrating the connection principle of the top cover, filter cartridge, and sealing head of the present invention.

[0039] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A;

[0040] Figure 7 For the present invention Figure 5 Enlarged view of the structure at point B;

[0041] Figure 8 This is a schematic diagram of the internal structure of the outer tube and the installation position of the fan in this invention;

[0042] Figure 9The schematic diagram of the overall structure and working principle of the first embodiment of the present application;

[0043] Figure 10 The schematic diagram of the overall structure and working principle of the second embodiment of the present application;

[0044] Figure 11 The schematic diagram of the overall structure and working principle of the third embodiment of the present application; Figure 10 The enlarged view of the structure at C of the present application;

[0045] Figure 12 The schematic diagram of the overall structure and working principle of the fourth embodiment of the present application;

[0046] Figure 13 The schematic diagram of the magnetic plate and the working principle of the fourth embodiment of the present application;

[0047] Figure 14 The schematic diagram of the arc-shaped plate and the guide cover of the fifth embodiment of the present application.

[0048] The meanings of the respective reference numerals in the drawings are as follows:

[0049] 100, filter part; 200, first booster part; 300, second booster part;

[0050] 110, outer tube; 111, side groove; 112, filter plate; 120, filter core cylinder; 121, sealing head; 1211, first plug-in groove; 122, fixing ring; 123, magnetic plate; 1231, sliding rod; 1232, clamping plate; 124, butt joint ring;

[0051] 210, base; 211, outer ring plate; 212, inner ring plate; 220, bottom cover; 221, filter screen; 222, support plate; 223, inner edge; 224, inner cavity; 230, supporting leg; 231, connecting block; 232, sliding groove;

[0052] 310, top cover; 311, connecting head; 3111, arc-shaped plate; 3112, guide cover; 3113, matching groove; 320, top cover; 321, second plug-in groove. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] In order to ensure the filtering effect, the filter core in the purification device needs to have sufficient pressure resistance; and under the continuous high-pressure environment, the physical structure of the filter core can gradually fatigue, resulting in the shortened service life.

[0055] In view of the above problems, the applicant of the present application provides a flue gas filtering structure capable of reducing pressure on the filter element, as shown in Figure 1 The filtering structure shown in the figure is composed of a filtering part 100, a first booster part 200 and a second booster part 300. The first booster part 200 and the second booster part 300 are arranged at the bottom and the top of the filtering part 100, respectively. Specifically:

[0056] As shown in Figure 2 The filtering part 100 includes an outer tube 110 and a filter element cylinder 120. Both the outer tube 110 and the filter element cylinder 120 are cylindrical structures. The cylindrical structure has a large filtering area, which allows the fluid to pass through the filtering medium (i.e. the filter element cylinder 120, preferably a PTFE coated filter element) uniformly. The inner diameter of the outer tube 110 is larger than the outer diameter of the filter element cylinder 120, so that the filter element cylinder 120 can be placed inside the outer tube 110. A bottom passage is arranged in the first booster part 200 along the axial direction thereof and communicates with the outer tube 110, but the passage does not communicate with the filter element cylinder 120. A first fan is arranged in the bottom passage. The airflow blown by the first fan passes between the outer tube 110 and the filter element cylinder 120 parallel to the axis of the filter element cylinder 120. A top passage is arranged in the second booster part 300 along the axial direction thereof and communicates with the filter element cylinder 120, but the passage does not communicate with the outer tube 110. A second fan is arranged in the top passage. The second fan blows the air in the filter element cylinder 120 to the top passage.

[0057] The second fan directly connected to the filter element cylinder 120 is a low-pressure fan.

[0058] The first fan is a high-pressure fan or a low-pressure fan.

[0059] In the first embodiment, as shown in Figure 2 A top cover 320 is arranged at the top of the filter element cylinder 120. The outer diameter of the top cover 320 is slightly larger than the outer diameter of the filter element cylinder 120. As shown in Figure 6 A second plug-in groove 321 is arranged at the bottom of the top cover 320 and matches the contour of the filter element cylinder 120. As shown in Figure 5 The filter element cylinder 120 is inserted into the second plug-in groove 321. As shown in Figure 5 A sealing head 121 is arranged at the bottom of the filter element cylinder 120. The outer diameter of the sealing head 121 is slightly larger than the outer diameter of the filter element cylinder 120. As shown in Figure 7 A first plug-in groove 1211 is arranged at the top of the sealing head 121 and matches the plug-in of the filter element cylinder 120.

[0060] After the above disclosure, the filter cartridge 120, the sealing head 121 and the top cover 320 form an integrated filter structure, and the sealing head 121 blocks the bottom of the filter cartridge 120, and the channel in the top cover 320 (i.e. the top channel) directly communicates with the filter cartridge 120, as shown in Figure 2 The top cover 310 is fixedly connected outside the top cover 320, and the top cover 310 and the top cover 320 jointly constitute the second booster part 300. The top cover 310 is detachably connected with the outer pipe 110 (the detachable connection modes include threaded connection, magnetic attraction, plug-in and clamping, etc.).

[0061] Based on the above structure, the process of disassembling and assembling the filter cartridge 120 is as follows:

[0062] When disassembling, the filter structure is placed horizontally. First, according to the connection mode of the top cover 310 and the outer pipe 110, the top cover 310 is separated from the outer pipe 110, and the integrated filter structure (the filter cartridge 120, the sealing head 121 and the top cover 320) is taken out from the outer pipe 110 in a vertical manner through the top cover 310. Then, the top cover 320 and the sealing head 121 are detached from the filter cartridge 120, and the old filter cartridge 120 is replaced.

[0063] When assembling, as shown in Figure 2 and Figure 5 , the new filter cartridge 120 is connected with the top cover 320 and the sealing head 121, and the integrated filter structure is inserted into the outer pipe 110 in a vertical manner (the filter cartridge 120 is coaxially arranged with the outer pipe 110), so that the top cover 310 is fixed with the outer pipe 110. The fixed top cover 310 blocks the gap between the outer pipe 110 and the top cover 320 at the top, thereby completing the replacement of the filter cartridge 120.

[0064] It should be emphasized that in order to ensure the stability of the connection between the second plug-in groove 321 and the first plug-in groove 1211 and the filter cartridge 120, engaging members (such as buckles, screws, etc.) are usually arranged at both ends of the filter cartridge 120 to connect with the top cover 320 and the sealing head 121.

[0065] In addition, as shown in Figure 2 , the bottom cover 220 is arranged at the bottom of the base 210, and the base 210 and the bottom cover 220 jointly constitute the first booster part 200, wherein:

[0066] As shown in Figure 3 , the outer ring plate 211 is arranged at the top of the base 210, and the outer ring plate 211 is detachably connected with the bottom of the outer pipe 110 (the detachable connection modes include threaded connection, magnetic attraction, plug-in and clamping, etc.). The channel formed by the inner cavity of the base 210 and the inner cavity 224 of the bottom cover 220 (i.e. the bottom channel) communicates with the outer pipe 110. Because the sealing head 121 blocks the bottom of the filter cartridge 120, the bottom channel does not communicate with the filter cartridge 120.

[0067] In the implementation, an inner edge 223 is arranged in the inner cavity 224 of the bottom cover 220 to support the base 210, because the base 210 is detachably connected with the bottom cover 220 (the detachable connection modes include threaded connection, magnetic attraction, plug-in connection, clamping, etc.), and a supporting plate 222 is arranged outside the bottom cover 220. In this embodiment, the filter structure is used on the workbench, and a plurality of through holes matched with the outer diameter of the bottom cover 220 are arranged on the workbench adjacent to the electric welding equipment, as shown in Figure 9 The bottom cover 220 is placed in the through hole, and the supporting plate 222 is supported by the workbench c to realize that the bottom cover 220 is suspended on the bottom of the workbench, so that the bottom passage is in communication with the environment of the bottom of the workbench.

[0068] As shown in Figure 8 , the bottom passage has a bottom space a in which a first fan is installed, and the top passage has a top space b in which a second fan is installed, as shown in Figure 2 , a plurality of side grooves 111 are arranged outside the outer pipe 110, and a filter plate 112 is installed in each side groove 111. The filter plate 112 is a grid structure, which protects the filter core cylinder 120, as shown in Figure 9 When the electric welding equipment works, the first fan (denoted by a) and the second fan (denoted by b) operate, wherein the second fan b is a high-pressure fan. When the second fan b operates, the air in the environment of the bottom of the workbench (because the workbench is isolated, there is no welding generated smoke) is sucked into the bottom passage to form an air flow e, as shown in Figure 3 The inner ring plate 212 is arranged in the base 210, the bottom of the inner ring plate 212 is fixedly connected with the inner wall of the base 210, and the top of the inner ring plate 212 extends into the cavity between the outer pipe 110 and the filter core cylinder 120. Here, the sealing head 121 is a conical structure with the head downward. When the air flow e passes through the gap between the inner ring plate 212 and the sealing head 121, the speed of the air flow e increases due to the limitation of the gap, and a high-speed air flow is obtained (f) Figure 9As the velocity increases, the dynamic pressure also increases according to Bernoulli's principle, the dynamic pressure is a form of kinetic energy of the airflow e, and higher dynamic pressure means that the high-speed airflow has greater kinetic energy, which enables the high-speed airflow to travel faster and farther, and the narrowing gap focuses the high-speed airflow, reducing the energy loss of the high-speed airflow due to lateral expansion during diffusion, and finally the high-speed airflow flows out of the gap parallel to the axis of the filter cartridge 120, so that the high-speed airflow does not exert pressure on the filter cartridge 120, but can use the flow rate difference between the high-speed airflow and the outside of the side groove 111 to press the air g outside the side groove 111 into the chamber between the outer tube 110 and the filter cartridge 120. Since the side groove 111 is exposed to the welding environment, the air outside the side groove 111 contains smoke, at this time, the second fan b can use a smaller suction force to make the air in the chamber containing smoke pass through the filter cartridge 120 to form a clean airflow f flowing to the top channel in the filter cartridge 120, and finally the clean airflow f is discharged into the top environment through the top channel under the action of the second fan b.

[0069] Preferably, as shown in Figure 4 The bottom cover 220 is provided with a filter screen 221 at the bottom of the first fan a, which can filter the air entering the bottom channel to prevent large particles from blocking the gap between the inner ring plate 212 and the sealing head 121.

[0070] The second embodiment, as shown in Figure 10 On the basis of the first embodiment, a plurality of accommodation grooves are formed on the side wall of the bottom cover 220, and a recess is formed at the top of the accommodation groove, in combination with Figure 11 As shown in the drawings, a connecting block 231 is fixedly connected to the lower wall of the accommodation groove, and a supporting leg 230 is arranged in the accommodation groove, and a sliding groove 232 is formed in the vertical supporting leg 230 and slidably connected with the connecting block 231, and the top end of the sliding groove 232 is bent towards the inside of the accommodation groove, wherein the supporting leg 230 has two attitudes, which are as follows:

[0071] In the first attitude, the supporting leg 230 is vertically inserted into the recess, so as to be accommodated in the accommodation groove;

[0072] In the second attitude, the supporting leg 230 is pulled out of the recess, and the supporting leg 230 is moved downward, so that the bottom end of the supporting leg 230 is located below the bottom cover 220, at this time, the connecting block 231 slides to the end of the bent part of the sliding groove 232, and then the supporting leg 230 is rotated outward, when all the supporting legs 230 around the bottom cover 220 are unfolded to form supporting legs, under the support of the supporting legs, the filter structure can be placed on the workbench d (at this time, the included angle between the supporting leg 230 and the workbench d is equal to the included angle of the bent part), and the bottom cover 220 is suspended, and the second attitude can return to the first attitude through the reverse operation of the above process.

[0073] Different from the first embodiment, the filter structure is placed on the workbench d in this embodiment, and the suspended bottom cover 220 can suck the smoke on the workbench when the first fan a is running, especially the particles falling on the workbench.

[0074] It is emphasized here that in the above two embodiments, the bottom filter screen 221 can also function to receive the aggregates filtered out by the filter cartridge 120, but most of the aggregates are still in the cavity between the outer tube 110 and the filter cartridge 120.

[0075] The third embodiment, as shown in Figure 12 Based on the second embodiment, a fixing ring 122 is arranged in the filter cartridge 120, and the filter cartridge 120 is attached to the inner ring plate 212 under the support of the fixing ring 122. For the star-shaped section filter cartridge 120, the folded part will be unfolded or stacked under the support of the fixing ring 122, so as to ensure the tightness of the attachment of the filter cartridge 120 to the inner ring plate 212. Different from the implementation of the second embodiment, the part of the filter cartridge 120 supported by the fixing ring 122 protrudes outward and is attached to the inner ring plate 212, so that the airflow flowing out of the gap between the inner ring plate 212 and the sealing head 121 passes through the filter cartridge 120 into the inside. At this time, part of the force exerted on the filter cartridge 120 by the airflow is shared by the fixing ring 122, reducing the impact of the high-pressure fan (i.e. the first fan a) on the filter cartridge 120. Finally, the clean airflow in the filter cartridge 120 is discharged to the top environment through the top channel under the action of the second fan b.

[0076] In this embodiment, the first fan a can also be a low-pressure fan.

[0077] In addition, as shown in Figure 12 The height of the bottom edge h1 in the side groove 111 is higher than the height of the top edge h2 of the inner ring plate 212, so that the aggregates are guided to enter the cavity between the inner ring plate 212 and the outer tube 110 through the inclined outer surface of the filter cartridge 120 and are stored.

[0078] The fourth embodiment, as shown in Figure 13As shown, the embodiment is a parallel implementation of the third embodiment, and the inner ring plate 212 is provided with a plurality of sliding rods 1231, and the sliding rods 1231 are slidably connected with magnetic plates 123, so as to form an annular structure by the plurality of magnetic plates 123, and the inner ring plate 212 is provided with a variable electromagnetic coil, in the first attitude, the electromagnetic coil generates a magnetic property different from the magnetic plate 123, so that the magnetic plate 123 drives the filter cartridge 120 to be close to the inner ring plate 212 (the filter cartridge 120 is fixedly connected with the magnetic plate 123 through the extrusion of the clamp plate 1232), at this time, the working mode is equivalent to the third embodiment; in the second attitude, the current direction in the electromagnetic coil is changed, and the same magnetic property is generated, so as to generate a repulsive force, so that the magnetic plate 123 is away from the inner ring plate 212, and finally stops above the docking ring 124 and is attached thereto, and the docking ring 124 is specifically arranged on the sealing head 121 and located outside the filter cartridge 120, at this time, the working mode is equivalent to the second embodiment, and after the magnetic plate 123 and the docking ring 124 are attached, the gap between the inner ring plate 212 and the sealing head 121 is extended, and the longer gap can better focus the airflow, so that the airflow is more concentrated, the turbulence in the airflow is reduced, and it is ensured that the airflow can be as parallel as possible to the axis of the filter cartridge 120 to flow out, so as to reduce the acting force of the airflow on the filter cartridge 120.

[0079] As shown in the fifth embodiment, in any one of the above embodiments, Figure 5 and Figure 14 As shown, the top of the top cover 310 is provided with a connecting head 311 with a flow channel inside, and the connecting head 311 can be connected with an arc-shaped plate 3111, so that the airflow discharged from the flow channel of the connecting head 311 is guided through the arc-shaped plate 3111 and flows towards the lower side flow channel of the periphery, so as to use the filtered airflow to press down the smoke as much as possible, so that the smoke is within the inhalable range of the side groove 111.

[0080] Alternatively, a guide cover 3112 is arranged on the top of the connecting head 311, a plurality of openings are arranged on the top of the guide cover 3112 and inclined upward, and the openings are in communication with a matching groove 3113, so that the airflow discharged from the flow channel of the connecting head 311 is discharged from the openings to the inclined upper side after passing through the matching groove 3113, and the matching groove 3113 can be provided with a condensing device or filled with air purification particles (such as activated carbon, flavoring particles, etc.), so as to perform secondary utilization or secondary purification treatment on the discharged airflow.

[0081] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A flue gas filtering structure for reducing pressure on a filter element, comprising a filter section (100), the filter section (100) comprising an outer tube (110) and a filter element cartridge (120), the filter element cartridge (120) being arranged inside the outer tube (110), characterized in that, The bottom of the filter cartridge (120) is sealed; It also includes a first pressurizing section (200) and a second pressurizing section (300), which are respectively disposed at the bottom and top of the outer tube (110); The first pressurization section (200) is a high-pressure section or a low-pressure section, used to input airflow into the outer pipe (110); The second pressurization section (300) is a low-pressure section used to output the air filtered by it inside the filter cartridge (120) to the outside; The first pressurization unit (200) is suspended in the air during use; The first pressurization unit (200) has a bottom channel that communicates with the outer pipe (110) through its axial direction, and a first fan is installed in the bottom channel; The second pressurization section (300) has a top channel that runs through its axial direction and is directly connected to the filter cartridge (120). A second fan is installed in the top channel. The first fan is either a high-pressure fan or a low-pressure fan; The second fan is a low-pressure fan; The first booster unit (200) includes a base (210) and a bottom cover (220) disposed at the bottom of the base (210), and the first fan is disposed inside the bottom cover (220); The base (210) is provided with an inner ring plate (212), the bottom of the inner ring plate (212) is bent outward and fixedly connected to the inner wall of the base (210), and the top of the inner ring plate (212) extends into the cavity between the outer tube (110) and the filter cartridge (120); A support plate (222) is provided on the outside of the bottom cover (220); The filter cartridge (120) is provided with a sealing head (121) at the bottom. The sealing head (121) is a cone-shaped structure with the head facing downwards. There is a gap between the inner ring plate (212) and the sealing head (121).

2. The reduced pressure receiving smoke filter structure according to claim 1, wherein The airflow entering the outer tube (110) passes through the outer tube (110) and the filter cartridge (120) parallel to the axis of the filter cartridge (120).

3. The reduced pressure receiving smoke filter structure according to claim 1, wherein The second pressurization unit (300) includes a top cover (310) and a top cover (320), the top cover (320) being disposed on the top of the filter cartridge (120), and the second fan being disposed inside the top cover (320); The top cover (310) and the outer tube (110) are detachably connected.

4. The flue gas filtration structure for reducing filter element pressure according to claim 1, characterized in that, The outer tube (110) is provided with a plurality of side grooves (111), and a filter plate (112) is installed in the side grooves (111). The filter plate (112) is a grid structure.

5. The flue gas filtration structure for reducing filter element pressure according to claim 1, characterized in that, Multiple receiving slots are provided on the side wall outside the bottom cover (220), and a connecting block (231) is fixedly connected to the lower inner wall of the receiving slot. The receiving groove is provided with a support leg (230). The vertical support leg (230) has a sliding groove (232) that is slidably connected to the connecting block (231) along the vertical direction. The top of the sliding groove (232) bends inward toward the receiving groove. The support leg (230) has two postures, as follows: In the first posture, the support leg (230) is retracted into the receiving groove; In the second posture, the outrigger (230) unfolds to form a supporting leg.

6. The flue gas filtration structure for reducing filter element pressure according to claim 5, characterized in that, A fixing ring (122) is provided inside the filter cartridge (120), and the filter cartridge (120) is in contact with the inner ring plate (212) under the support of the fixing ring (122).

7. The flue gas filtration structure for reducing filter element pressure according to claim 6, characterized in that, The inner ring plate (212) is provided with a plurality of slide rods (1231) on the inner side, and a magnetic plate (123) is slidably connected on the slide rods (1231). The magnetic plate (123) is fixedly connected to the filter cartridge (120). A variable electromagnetic coil is provided inside the inner ring plate (212). Among them, the electromagnetic coil generates a magnetism that is different from that of the magnetic plate (123), causing the magnetic plate (123) to drive the filter cartridge (120) to come close to the inner ring plate (212). A docking ring (124) is provided on the outer side of the filter element cylinder (120) on the sealing head (121). The direction of the current in the electromagnetic coil changes, generating the same magnetism, forming a repulsive force, causing the magnetic plate (123) to move away from the inner ring plate (212), and finally stop above the docking ring (124) and fit against it.

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