Modularized air filtering equipment easy to clean

Abstract

The invention discloses modularized air filtering equipment easy to clean. The modularized air filtering equipment comprises a first-stage dust removal barrel, a control device and a second-stage filtering box, the control device is detachably connected with the box body, a first connector is arranged at the bottom of the control device, a second connector is arranged on the surface of the box body, the second connector is connected with the fan, and the first-stage dust removal barrel, the control device and the second-stage filter box are all three independent modules which are detachably connected. Especially, the control device is independently packaged and cannot make contact with air in the air filtering process, dust can be prevented from entering the control device in the filtering process, the interior of the control device is kept clean, in addition, the three parts can be detached and separated in the cleaning process, and the cleaning efficiency is improved. The first-stage dust removal barrel and the second-stage dust removal barrel are independently and continuously cleaned, so that the control device can be prevented from being in contact with water, and both disassembly and assembly are very convenient; in addition, the inner shell and the outer shell forming the annular air channel can be cleaned, and bacterium breeding is avoided.

Description

Technical Field

[0001] The invention belongs to the field of product processing, and in particular relates to a modular and easy-to-clean air filtering device. Background Art

[0002] Air filters are one of the commonly used devices for dust removal and air purification. For scenes with heavy dust, a lot of dust will accumulate inside the air filter after a period of use, resulting in poor air circulation, affecting the filtering effect and shortening the use time. In addition, the current controllers are all integrated together, so it is inevitable that dust will enter the controller, causing short circuits in electronic components.

[0003] There is also the problem of cleaning. Currently, the way to clean air filters is more of a simple replacement of consumables, and there is no overall cleaning. Dust will still be mixed with the gas during the internal flow, and some of this dust will be adsorbed on the side walls. If these locations are not cleaned for a long time, a large number of bacteria will breed. Summary of the invention

[0004] The object of the present invention is to provide a modular and easy-to-clean air filtering device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A modular and easy-to-clean air filtration device, comprising a primary dust removal bucket, a control device and a secondary filter box;

[0007] The first-stage dust removal bucket comprises a cylindrical inner shell and an outer shell, one end of the inner shell and the outer shell are detachably connected through an end cover, the outer shell is sleeved on the outer circumference of the inner shell, and an annular air duct is formed between the two, the inner wall of the inner shell is provided with a plurality of air inlets tangent to its inner cavity, the bottom of the inner shell is provided with a turntable 1, the turntable 1 is detachably connected to the bottom of the dust cover, the upper end of the dust cover is connected to the end cover through a turntable 2, so that an air inlet channel is formed between the end cover, the turntable 2 and the upper end of the dust cover, and a washable dust sticking stick is detachably connected to the bottom center of the dust cover;

[0008] The secondary filter box comprises a box body, the upper end surface of the box body is provided with an air inlet 2 and a plurality of air outlets 2 are provided on its side, a filter element is provided at a position corresponding to the plurality of air outlets 2 on the inner side of the box body, the outer shell is detachably mounted on the box body, so that the air outlet 1 of the outer shell is connected with the air inlet 2, and a fan is installed at the air inlet 2;

[0009] The control device is detachably connected to the box body, a connector 1 is provided at the bottom of the control device, and a connector 2 is provided on the surface of the box body, and the connector 2 is connected to the fan.

[0010] A further technical solution is to start the fan by triggering it through a control device, so that the airflow in the inner shell forms a vortex and then the fan is turned off. Under the action of the secondary flow and the Ekman layer, the dust gathers in the center and adheres to the dust sticking rod.

[0011] According to a further technical solution, the dust sticking stick comprises a cylindrical frame, an adhesive silicone material is sleeved on the frame, a fixing part is provided at the bottom of the frame, and the fixing part is detachably connected to the bottom of the dust cover by magnetic attraction.

[0012] According to a further technical solution, the turntable 2 includes an inner ring and an outer ring in an annular shape, the outer ring is fixedly connected to the end cover, the inner ring and the outer ring are movably connected, an annular channel is formed between the two, balls are arranged in the channel, and the inner ring is detachably connected to the upper end of the dust cover.

[0013] According to a further technical solution, the lower end surface of the inner ring is provided with an annular flange, the upper end of the dust cover is provided with a second fixing part, and the second fixing part is provided with an annular groove adapted to the annular flange.

[0014] According to a further technical solution, a plurality of baffles are provided on the outer side of the dust collecting hood.

[0015] A further technical solution is that two annular grooves 2 are provided on the end surface of the end cover, corresponding to the upper ends of the outer shell and the inner shell respectively, a sealing ring is provided at the bottom of the annular groove 2, and a clamping strip is provided in the annular groove 2, and an "L"-shaped clamping groove cooperating with the clamping strip is provided at the edge position of the inner shell and the outer shell.

[0016] A further technical solution is that a bottom cover is provided at the bottom of the box body, and the bottom cover is detachably connected to the box body. Corresponding to the circumference direction of the second air outlet, a plurality of plug-in positions are provided on the inner side of the box body, and sealing rings are provided in the plug-in positions. The edge of the filter element is placed in the plug-in position by interference fit.

[0017] According to a further technical solution, the control device is arranged close to the first-stage dust removal bucket, and one side of the control device is designed as a curved surface to adapt to the outer circumference of the first-stage dust removal bucket.

[0018] Beneficial effects of the present invention:

[0019] The first-stage dust removal bucket, the control device and the second-stage filter box in the present invention are three independent modules, which are all connected in a detachable manner. In particular, the control device is independently packaged and will not come into contact with the gas during the air filtering process, so dust in the filtering process can be prevented from entering the control device, and the interior thereof can be kept clean. In addition, the three can be disassembled and separated during the cleaning process, and the first-stage dust removal bucket and the second-stage filter box can be cleaned separately, so that the control device can be prevented from coming into contact with water. Both disassembly and installation are very convenient; moreover, the inner shell and the outer shell forming the annular air duct can be cleaned to prevent bacterial growth;

[0020] During operation, external air enters the dust hood from the air inlet channel, and part of the air passes through the dust sticking rod, where the dust will adhere to the dust sticking rod, which can remove part of the dust entering the gas. Driven by the airflow in the inner cavity, the dust hood is pushed to rotate, thereby stirring the air inside to rotate. Centrifugal force can generate greater wind pressure, allowing the gas to pass through the dust hood faster.

[0021] In addition, through the above structure combined with intermittent use, the dust adhesion of the dust hood can be reduced and the use time of the dust hood can be extended.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : The overall three-dimensional structure diagram of the present invention.

[0024] Figure 2 : The overall cross-sectional structure diagram of the present invention.

[0025] Figure 3 :Disassembly of the present invention Figure 1 .

[0026] Figure 4 :Disassembly of the present invention Figure 2 .

[0027] Figure 5 : Explosion diagram of the first-level dust removal bucket of the present invention.

[0028] Figure 6 : A cross-sectional view of a primary dust removal bucket of the present invention.

[0029] Figure 7 : Disassembly diagram of the inner shell, outer shell and end cover of the present invention.

[0030] Figure 8 : Secondary filter box structure diagram of the present invention.

[0031] Figure numerals: 1-first-stage dust removal bucket, 11-inner shell, 12-outer shell, 121-air outlet 1, 13-end cover, 131-annular groove 2, 132-clip strip, 133-air inlet 1, 134-clip groove, 14-annular air duct, 15-air inlet 1, 16-turntable 1, 17-dust cover, 171-fixing part 2, 172-annular groove 1, 173-baffle 1, 174-baffle 2, 175-air inlet Part 2, 18-turntable 2, 181-inner ring, 182-outer ring, 183-annular channel, 184-ball, 185-annular flange, 19-dust sticking rod, 2-secondary filter box, 211-box, 212-bottom cover, 213-plug-in position, 214-buckle, 22-air inlet 2, 23-air outlet 2, 24-filter element, 25-fan, 26-connector 2, 3-control device, 31-connector 1. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Please refer to Figure 1-4 ;

[0034] The air filtering device of the present invention aims to improve the filtering effect, avoid dust accumulation, and provide a better cleaning method by improving the structure; specifically, it comprises a primary dust removal bucket 1, a control device 3 and a secondary filter box 2. The above three parts are three independent modules, which are all connected in a detachable manner. In particular, the control device 3 is independently packaged, and will not come into contact with the gas during the air filtering process, so dust in the filtering process can be prevented from entering the control device 3, and the inside thereof can be kept clean. In addition, during the cleaning process, the three parts can be disassembled and separated, and the primary dust removal bucket 1 and the secondary filter box 2 can be cleaned separately, so that the control device 3 can be prevented from coming into contact with water. Both disassembly and installation are very convenient.

[0035] The first-stage dust removal barrel 1 includes a cylindrical inner shell 11 and an outer shell 12. The outer shell 12 is located at the outer periphery of the inner shell 11, and the two do not contact each other. An annular air duct 14 is formed between the two. Then, the relative positions of the inner shell 11 and the outer shell 12 are fixed by the end cover 13. Of course, the inner shell 11 and the outer shell 12 are detachably connected to the end cover 13, and preferably, a sealing ring is provided at the connection to prevent air leakage. A circular inner cavity is provided in the inner shell 11, and a plurality of air inlets 15 tangent to the inner cavity are provided on the inner wall thereof. The air inlets 15 are in the shape of long strips and extend longitudinally along the inner wall thereof. A turntable 16 is provided at the bottom of the inner shell 11. The turntable 16 is detachably connected to the bottom of the dust cover 17. Specifically, the detachability can be achieved by magnetic attraction or by snap-on 214. The upper end of the dust cover 17 is connected by a turntable 2 18 is connected to the end cover 13, and the turntable 2 18 in this embodiment is annular; an air inlet 133 is provided on the end cover 13, and an air inlet 2 175 corresponding to the air inlet 133 is provided on the dust cover 17, so that an air inlet channel is formed between the end cover 13, the turntable 2 18 and the upper end of the dust cover 17, and the turntable 2 18 can not only provide auxiliary rotation, but also block the air inlet channel and the inner cavity of the inner shell 11, so as to prevent the gas from directly entering the inner ring 181 of the inner shell 11 without filtering. A washable dust sticking rod 19 is detachably connected to the bottom center of the dust cover 17, which can be detachable by magnetic attraction or by snap-on 214. In this embodiment, the dust sticking rod 19 can be disposable and replaceable, or can be washed, and the viscosity can be restored after drying;

[0036] The secondary filter box 2 includes a box body 211, an air inlet 22 is provided on the upper end surface of the box body 211, and a plurality of air outlets 23 are provided on the side thereof, a filter element 24 is provided at the position corresponding to the plurality of air outlets 23 on the inner side of the box body 211, and the housing 12 is detachably mounted on the box body 211, so that the air outlet 121 of the housing 12 is connected with the air inlet 22, and a fan 25 is installed at the air inlet 22. Specifically, the housing 12 and the box body 211 can be connected in a threaded manner, which can ensure sealing and facilitate disassembly, and the fan 25 is sealed and connected to the box body 211 on one side of the air inlet end to avoid air leakage;

[0037] The control device 3 is detachably connected to the box body 211, and a connector 1 31 is provided at the bottom of the control device 3, and a connector 2 26 is provided on the surface of the box body 211. The connector 2 26 is connected to the fan 25. All control units in the device are encapsulated in the control device 3. There is no complicated circuit connection between the control device 3 and the secondary filter box 2. Electric energy is provided to the fan 25 only after the connector 1 31 and the connector 2 26 are coupled and connected. Therefore, there are no complicated circuit components in the secondary filter box 2. The selected fan 25 and coupler are both waterproof. Therefore, when cleaning, you only need to disconnect the connector 1 31 and the connector 2 26, and the secondary filter box 2 can be directly immersed in water for cleaning.

[0038] In order to enable the inner cavity to generate a spiral airflow, the present invention adopts a plurality of air inlets 1 arranged in a manner tangent to the inner cavity of the inner shell 11; during operation, the fan 25 rotates at a high speed, and external air enters the dust cover 17 from the air inlet passage, wherein a portion of the air passes through the dust sticking rod 19, and the dust therein adheres to the dust sticking rod 19, so that a portion of the dust entering the gas can be removed, and then the air passes through the dust cover 17 under the action of suction and enters the inner cavity of the inner shell 11, and larger particles are blocked by the dust cover 17 and remain inside, while the gas entering the inner cavity is sucked in in a spiral trajectory under the action of the plurality of air inlets 1, and in this process, the dust cover 17 is driven to rotate. Preferably, in order to better promote the rotation of the dust cover 17, a plurality of baffles 173 are provided on the outer side of the dust cover 17;

[0039] Among them, baffle 1 173 is inclined and arranged in the opposite direction to the movement direction of the airflow in the inner cavity, so as to better withstand the wind pressure. Driven by the airflow in the inner cavity, the dust hood 17 is pushed to rotate, thereby stirring the air inside to rotate. The centrifugal force can generate a greater wind pressure, so that the gas can pass through the dust hood 17 faster. Furthermore, in order to make the gas inside the dust hood 17 rotate faster, a plurality of baffles 174 are arranged on the inner side of the dust hood 17. The baffles 174 are arranged in the opposite direction to the baffle 1 173. The plurality of baffles 174 form a spoiler. Driven by the rotation of the dust hood 17, the spoiler stirs the internal airflow to make it rotate.

[0040] Based on the above embodiment, a filtering method is also disclosed in which the fan 25 is controlled to stop intermittently by the control device 3:

[0041] First, the fan 25 is triggered to start by the control device 3, and the external air is first sucked into the dust cover 17 according to the above process, and then the air passes through the dust cover 17 and enters the inner cavity of the inner shell 11 through a plurality of air inlets 15 into the annular air duct 14. Driven by the rotating airflow in the inner cavity, the dust cover 17 rotates and drives the air inside it to rotate. The centrifugal force can generate a greater wind pressure, so that the gas can pass through the dust cover 17 faster.

[0042] After that, the control device 3 turns off the fan 25, the suction force generated at the air inlet 15 disappears, and the rotating airflow in the inner cavity disappears, but the dust cover 17 still slows down and rotates under the action of inertia. Under the action of the secondary flow and the Ekman layer, the dust gathers at the center and adheres to the dust sticking rod 19. In short, during the deceleration of the dust cover 17, the rotation speed of the inner and outer sides is lower than the rotation speed of the center position, which leads to a pressure difference, so that part of the dust attached to the dust cover 17 will fall off, especially the dust with a larger volume is easier to fall off, or part of the dust floating inside, and the dust is moved closer to the center position, and the dust is captured by the dust sticking rod 19, so that the dust is reduced from adhering to the dust cover 17;

[0043] Before the dust cover 17 stops rotating, the fan 25 is restarted by the control device 3, and the above process is repeated. Specifically, the time for the fan 25 to be turned off can be limited by a timer, and the fan 25 is automatically powered on when the time is reached. Of course, the time for the fan 25 to be turned off only needs to be less than 10 seconds;

[0044] Through the above structure combined with intermittent use, the dust adhesion of the dust cover 17 can be reduced and the use time of the dust cover 17 can be extended.

[0045] Since the primary filter barrel is used for primary filtration of the air, there is a lot of dust adhering to the dust cover 17, the inner cavity of the inner shell 11 and the annular air duct 14, which is easy to breed bacteria, especially in humid seasons. Therefore, it is particularly important to clean the primary filter barrel;

[0046] When cleaning is required, first separate the primary filter barrel from the secondary filter box 2, then remove the end cover 13 to release the limitation of the outer shell 12 and the inner shell 11. At this time, the inner shell 11 can be taken out from the outer shell 12, and then the dust cover 17 and the dust sticking rod 19 can be taken out in turn, and the inner wall of the outer shell 12, the inner shell 11 as a whole, the dust cover 17 and the dust sticking rod 19 can be cleaned respectively. Both disassembly and assembly are very convenient.

[0047] In the embodiment of the present invention, the secondary filter box 2 serves as a base, and the primary dust removal bucket 1 and the control device 3 are installed on the surface of the secondary filter box 2. The control device 3 is arranged close to the primary dust removal bucket 1. One side of the control device 3 is designed as an arc surface, which is adapted to the outer periphery of the primary dust removal bucket 1. Through such a design, the control device 3 and the primary dust removal bucket 1 can support each other. In addition, buckles 214 are arranged on both sides of the box body 211 for fixing the control device 3.

[0048] In one embodiment of the secondary filter box 2 of the present invention, a bottom cover 212 is provided at the bottom of the box body 211, and the bottom cover 212 is detachably connected to the box body 211. Corresponding to the circumference direction of the second air outlet 23, a plurality of plug-in positions 213 are provided on the inner side of the box body 211, and a sealing ring is provided in the plug-in position 213. The edge of the filter element 24 is placed in the plug-in position 213 through interference fit. The air that has undergone primary filtration is output to the box body 211 through the fan 25, so that the air pressure in the box body 211 is increased, and then the air is discharged to the outside after secondary filtration by the filter element 24. Similarly, the secondary filter box 2 needs to be cleaned after long-term use;

[0049] When cleaning is required, the inner space of the box body 211 will be exposed by removing the bottom cover, and then the filter element 24 can be pulled out by hand, and then the box body 211 can be cleaned as a whole. Since there are only the fan 25 and the second connector 26 inside the secondary filter box 2, the electronic components themselves are very small, and all waterproof products are used, so they can be directly soaked and rinsed with water, which is very convenient. After wiping it clean, replace the new filter element 24, and then seal the bottom cover. In addition, it is also very friendly for maintenance, without removing too many parts, to achieve quick replacement and maintenance, and non-technical personnel can easily operate;

[0050] Furthermore, the fan 25 is fixed to the box body 211 with screws, and of course a sealing gasket is provided to ensure sealing. The fan 25 and the connector 2 26 can be connected by a PIN pin plug-in type, without the need for cumbersome operations such as welding.

[0051] One of the embodiments of the dust sticking stick 19 of the present invention is a cylindrical frame, on which an adhesive silicone material is sleeved, and a fixing portion 1 is provided at the bottom of the frame. The fixing portion 1 is detachably connected to the bottom of the dust cover 17 through magnetic attraction. The adhesive silicone material label will lose its stickiness after being covered with dust, but will become sticky again after the dust on the surface is cleaned and dried. Therefore, it is widely used in life to remove sticky hair on clothes. The use of a cylindrical frame can stick to dust both inside and outside, which can increase the contact area.

[0052] One of the embodiments of the turntable 18 of the present invention specifically includes an inner ring 181 and an outer ring 182 in the form of an annular ring. The outer ring 182 is fixedly connected to the end cover 13, and can be specifically formed as one piece. The inner ring 181 and the outer ring 182 are movably connected, and an annular channel 183 is formed therebetween. A ball 184 is provided in the channel. The inner ring 181 is detachably connected to the upper end portion of the dust cover 17. Preferably, a sealing gasket is provided at the bottom of the inner ring 181, that is, a sealing gasket is provided between the inner ring 181 and the upper end surface of the dust cover 17, which can compensate for the error and ensure that there is no gap in this part and no air leakage will occur. Secondly, floating may occur during the rotation of the dust cover 17, so the sealing gasket can also be adjusted to adapt to the floating part.

[0053] Furthermore, an annular flange 185 is provided on the lower end face of the inner ring 181, a fixing portion 171 is provided on the upper end of the dust cover 17, and an annular groove 172 adapted to the annular flange 185 is provided on the fixing portion 171. The dust cover 17 can be limited by the upper structure, that is, the turntable 16, the dust cover 17 and the turntable 2 18 are concentrically arranged, so that the rotation of the dust cover 17 is more stable.

[0054] The present invention describes the installation method between the end cover 13, the outer shell 12 and the inner shell 11. An air inlet 133 is provided in the middle position of the end cover 13. The air inlet 133 is also circular and should be as large as possible. The air inlet 175 of the dust cover 17 is the same size as the air inlet 133. Two annular grooves 131 are provided at the lower end surface of the outer circumference of the air inlet 133, which correspond to the upper ends of the outer shell 12 and the inner shell 11 respectively. A sealing ring is provided at the bottom of the annular groove 131, and a clamping strip 132 is provided in the annular groove 131. The edge positions of the inner shell 11 and the outer shell 12 are provided with an "L"-shaped clamping groove 134 that cooperates with the clamping strip 132. Unlocking and fixing can be achieved by rotation. The structure is very simple and the relative position of the inner shell 11 and the outer shell 12 can be limited.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A modular and easy-to-clean air filtration device, characterized in that: It comprises a primary dust removal bucket (1), a control device (3) and a secondary filter box (2); The primary dust removal bucket (1) comprises a cylindrical inner shell (11) and an outer shell (12), one end of the inner shell (11) and the outer shell (12) are detachably connected via an end cover (13), the outer shell (12) is sleeved on the outer periphery of the inner shell (11), and an annular air duct (14) is formed between the two, the inner wall of the inner shell (11) is provided with a plurality of air inlets (15) tangent to the inner cavity thereof, the bottom of the inner shell (11) is provided with a turntable (16), the turntable (16) is detachably connected to the bottom of a dust cover (17), the upper end of the dust cover (17) is connected to the end cover (13) via a turntable (18), so that an air inlet channel is formed between the end cover (13), the turntable (18) and the upper end of the dust cover (17), and a cleanable dust sticking rod (19) is detachably connected to the center of the bottom of the dust cover (17); The secondary filter box (2) comprises a box body (211), the upper end surface of the box body (211) is provided with an air inlet 2 (22) and a plurality of air outlets 2 (23) are provided on its side, a filter element (24) is provided at a position on the inner side of the box body (211) corresponding to the plurality of air outlets 2 (23), the outer shell (12) is detachably mounted on the box body (211), so that the air outlet 1 (121) of the outer shell (12) is connected to the air inlet 2 (22), and a fan (25) is installed at the air inlet 2 (22); The control device (3) is detachably connected to the box (211); a connector 1 (31) is provided at the bottom of the control device (3); a connector 2 (26) is provided on the surface of the box (211); and the connector 2 (26) is connected to the fan (25).

2. A modular and easy-to-clean air filtration device according to claim 1, characterized in that: The fan (25) is started by triggering the control device (3), so that the airflow in the inner shell (11) forms a vortex and then the fan (25) is turned off. Under the action of the secondary flow and the Ekman layer, the dust gathers at the center and adheres to the dust sticking rod (19).

3. A modular and easy-to-clean air filtration device according to claim 1 or 2, characterized in that: The dust sticking rod (19) comprises a cylindrical frame, on which an adhesive silicone material is sleeved, and a fixing portion 1 is provided at the bottom of the frame, wherein the fixing portion 1 is detachably connected to the bottom of the dust removal cover (17) through magnetic attraction.

4. A modular and easy-to-clean air filtration device according to claim 1, characterized in that: The turntable 2 (18) comprises an annular inner ring (181) and an outer ring (182); the outer ring (182) is fixedly connected to the end cover (13); the inner ring (181) and the outer ring (182) are movably connected; an annular channel (183) is formed between the inner ring (181) and the outer ring (182); a ball (184) is arranged in the channel; and the inner ring (181) is detachably connected to the upper end of the dust cover (17).

5. A modular and easy-to-clean air filtration device according to claim 4, characterized in that: The lower end surface of the inner ring (181) is provided with an annular flange (185), the upper end of the dust cover (17) is provided with a second fixing portion (171), and the second fixing portion (171) is provided with an annular groove (172) adapted to the annular flange (185).

6. A modular and easy-to-clean air filtration device according to claim 1, characterized in that: A plurality of baffles (173) are provided on the outer side of the dust removal cover (17).

7. A modular and easy-to-clean air filtration device according to claim 1, characterized in that: The end surface of the end cover (13) is provided with two annular grooves (131) which correspond to the upper ends of the outer shell (12) and the inner shell (11), respectively; a sealing ring is provided at the bottom of the annular groove (131); and a clamping strip (132) is provided inside the annular groove (131); and an "L"-shaped clamping groove (134) which cooperates with the clamping strip (132) is provided at the edge positions of the inner shell (11) and the outer shell (12).

8. The modular and easy-to-clean air filtration device according to claim 1, characterized in that: A bottom cover (212) is provided at the bottom of the box body (211), and the bottom cover is detachably connected to the box body (211). Corresponding to the circumferential direction of the second air outlet (23), a plurality of plug-in positions (213) are provided on the inner side of the box body (211), and sealing rings are provided in the plug-in positions (213). The edges of the filter element (24) are placed in the plug-in positions (213) by interference fit.

9. The modular and easy-to-clean air filtration device according to claim 1, characterized in that: The control device (3) is arranged close to the primary dust removal bucket (1), and one side of the control device (3) is designed as a curved surface, which is adapted to the outer circumference of the primary dust removal bucket (1).

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