An environmentally friendly fan purification and filtering device

Abstract

The present invention relates to the field of fan filtering technology, and discloses an environmentally friendly fan purification and filtering device, including a fan and a pipeline, a connecting mechanism fixedly connected between the air inlet pipeline and the pipeline, a screening mechanism arranged inside the pipeline, and a placement mechanism fixedly connected to the right side of the pipeline; the screening mechanism includes a rotating assembly and an installation assembly, the rotating assembly includes a T-slot, four T-plates are fixedly connected to the inner sides with precision filter plates, the surface of the rotating shaft is fixedly connected with a gear, and the inner ring of the annular gear ring is fixedly connected with a filter plate. The environmentally friendly fan purification and filtering device, by setting a rotating assembly, when the gear and the annular gear ring are meshed and connected, the annular gear ring can rotate on its own, and when the annular gear ring rotates, it can drive the fixed ring to rotate, and can utilize the opposite rotation of the left and right filter plates and the cooperation of the precision filter plate to remove a large amount of dust and particulate matter in the air through multi-stage filtration and utilize the exhaust function of the fan to achieve thorough purification of the particulate matter.

Description

Technical Field

[0001] The invention relates to the technical field of fan filtering, and in particular to an environmentally friendly fan purification and filtering device. Background Art

[0002] The role of fans in air purification and filtration Fans play an important role in air purification and filtration. Fan purification mainly relies on the filter unit inside it to purify the air. The fan purification device is a self-powered, modular terminal air supply device with filtering function. They are usually used to drive air flow and help the filtration system capture and remove particulate matter in the air.

[0003] According to announcement number CN112370896A, an environmental protection device for air filtration and purification includes at least one decontamination chamber for removing particulate matter in exhaust gas, and also includes at least one decontamination chamber for purifying exhaust gas, and the decontamination chamber and the decontamination chamber are connected by a pipeline; an air inlet is provided on the decontamination chamber, and an exhaust port is provided on the decontamination chamber.

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During use, in the exhaust gas treatment of the device, a fan is used to introduce the gas into the purification equipment to adsorb and oxidize the harmful substances therein and achieve purification. However, the fan purification is mostly unable to effectively clean the dust-proof structure therein, and it is not convenient for the staff to install and disassemble the filter structure therein. Summary of the invention

[0006] The purpose of the present invention is to provide an environmentally friendly fan purification and filtering device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an environmentally friendly fan purification and filtering device, comprising a fan and a pipeline, wherein an air inlet pipeline is fixedly connected to the right side of the fan, the pipeline surface and the inside of the air inlet pipeline are plugged, a connecting mechanism is fixedly connected between the air inlet pipeline and the pipeline, a screening mechanism is arranged inside the pipeline, and a placement mechanism is fixedly connected to the right side of the pipeline;

[0008] The screening mechanism comprises a rotating assembly and a mounting assembly, wherein the mounting assembly is arranged on the rotating assembly;

[0009] The rotating assembly includes a T-slot, wherein the T-slot is opened around the left side of the inner wall of the pipeline, a T-plate is slidably connected inside the T-slot, four precision filter plates are fixedly connected inside the four T-plates, and limiting rings are fixedly connected inside the four T-plates, and two limiting rings are fixedly connected at both upper and lower ends to fixed blocks, one end of the inner side of the fixed block is fixedly connected to a motor, and the inner side of the motor is fixedly connected to a rotating shaft, and the number of rotating shafts is four and two are in a group, the rotating shaft surface is rotatably connected to the inside of the fixed block, and the rotating shaft surface is fixedly connected to a gear, a T-shaped slide groove is opened on the inner side of the T-shaped slide groove, and T-shaped sliders are slidably connected around the inner side, an annular gear ring is fixedly connected inside the T-shaped slider, the inner ring of the annular gear ring is fixedly connected to the filter plate, and the annular gear ring is fixedly connected to a fixing ring on the side close to the gear.

[0010] According to the above technical solution, there are two limit rings, and both limit rings are arranged on the right side of the precision filter plate.

[0011] According to the above technical solution, the inner surfaces of the two left and right gears are meshed and connected, and the outer surfaces of the two left and right gears are meshed and connected with the surface of the annular gear ring. When the gears and the annular gear ring are meshed and connected, the annular gear ring can rotate on itself. The left and right filter plates can rotate in opposite directions and cooperate with the precision filter plates. Through multi-stage filtration and the exhaust function of the fan, a large amount of dust and particulate matter in the air can be completely purified.

[0012] According to the above technical scheme, the mounting assembly includes a T-shaped rod, wherein the T-shaped rod is fixedly connected to the left side of the precision filter plate, the surface of the T-shaped rod is rotatably connected to a rotating seat, and the other side of the rotating seat is fixedly connected to a square seat, and arc-shaped long grooves are opened around the inner wall of the pipe, and a first arc-shaped slide groove is opened on the right side of the inner wall of the arc-shaped long groove, and a first arc-shaped slider is slidably connected inside the first arc-shaped slide groove, and a push plate is fixedly connected to the left side of the first arc-shaped slider, and the push plate is fixedly connected to a long block near the square seat, and a long groove is opened inside the square seat, and the long groove is set to an opening near the push plate, and the surface of the long block is inserted into the long groove and fixedly connected to the pipe by a second bolt, the square seat is inserted in the arc-shaped long groove, and the long block is inserted in the long groove, and the precision filter plate and the filter plate can be set in the pipe to prevent the precision filter plate and the filter plate from moving in the pipe when the fan is running.

[0013] According to the above technical solution, the number of the arc-shaped long grooves is four and one side close to the T-shaped rod is set as an opening, and the four arc-shaped long grooves are all set on one side of the four T-shaped grooves.

[0014] The cam is provided with a plurality of grooves, and the grooves are connected to the cams on the sides of the cams. The cams are connected to the plurality of grooves on the sides of the cams. The grooves are connected to the plurality of grooves on the sides of the cams. The plurality of grooves are connected to the plurality of grooves on the sides of the cams.

[0015] According to the above technical solution, the slot is set to be open on one side away from the air inlet duct and at both ends, and the surface of the plug block is plugged into the inside of the slot. The plug block is plugged into the slot, which can facilitate the duct to be conveniently located on the right side of the air inlet duct.

[0016] According to the above technical scheme, the placement mechanism includes a hollow round cover, which is fixedly connected to the right side of the pipeline, and a filter plate is fixedly connected to the left side of the inner circle of the hollow round cover. The upper and lower surfaces of the hollow round cover are provided with second arc-shaped slide grooves, and a covering filter plate is hinged on the back of the hollow round cover. The upper and lower ends of the right side of the covering filter plate are fixedly connected with mounting blocks, and a second arc-shaped slider is slidably connected inside the second arc-shaped slide groove, and a mounting plate is fixedly connected to the outer side of the second arc-shaped slider, and a square groove is provided inside the mounting plate. A hinged plate is hinged on the right side of the mounting plate, and the other side of the hinged plate is hinged to the left side of the mounting block. Telescopic plates are fixedly connected all around the right side surface of the pipeline, and the covering filter plate covers the right side of the hollow round cover, so that activated carbon can be laid on the right side of the placement filter plate without falling off, thereby facilitating the treatment of paint particles in the air.

[0017] According to the above technical solution, both left and right sides of the square groove are set to be openings, and the surface of the telescopic plate and the inside of the square groove are plugged into each other.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] The environmentally friendly fan purification and filtering device is provided with a rotating component. When the two gears rotate, the two gears rotate in opposite directions. When the gears are meshed and connected with the annular gear ring, the annular gear ring can rotate on itself, and at the same time, the left and right annular gear rings rotate in opposite directions. When the annular gear ring rotates, it can drive the fixed ring to rotate, and the fixed ring drives the T-shaped slider to rotate in the T-shaped slide groove. At this time, the left and right filter plates can rotate in opposite directions and cooperate with the precision filter plate to remove a large amount of dust and particulate matter in the air through multi-stage filtration and utilize the exhaust function of the fan to achieve thorough purification of the particulate matter.

[0020] The environmentally friendly fan purification and filtering device is provided with an installation component. The rotating seat is moved to rotate on the surface of the T-shaped rod. The rotating seat drives the square seat to be inserted into the arc-shaped long groove. The push plate is moved. The push plate drives the long block to be inserted into the long groove. The square seat, the long block and the pipeline are respectively threaded and fixed by the second bolt. At this time, the precision filter plate and the filter plate can be set in the pipeline to avoid the situation that the precision filter plate and the filter plate will not move in the pipeline when the fan is running.

[0021] The environmentally friendly fan purification and filtering device is provided with a connecting mechanism, and the connecting plate is moved so that the connecting plate drives the connecting block to move, and the connecting plate drives the plug block to be inserted into the slot, and the rotating plate is rotated on the surface of the rotating rod and inserted into the rectangular groove, and the plug block and the rotating plate are threadedly fixed by a first bolt, which can facilitate the pipeline to be conveniently located on the right side of the air inlet pipeline, and the particulate matter in the air can be removed by the cooperation of the precision filter plate and the filter plate. At the same time, when the pipeline is removed in the reverse direction, the precision filter plate and the filter plate can be easily cleaned.

[0022] The environmentally friendly fan purification and filtering device is provided with a placement mechanism, and the mounting plate is pulled so that the mounting plate drives the second arc-shaped sliding block to slide in the second arc-shaped sliding groove. When the mounting plate moves, the covering filter plate can be hinged and rotated on the right side of the hollow round cover, so that the covering filter plate can cover the right side of the hollow round cover, and the activated carbon can be laid on the right side of the placement filter plate without falling, so that the paint particles in the air can be processed easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a three-dimensional diagram of the structure of the present invention;

[0025] Figure 2 It is a partial structural schematic diagram of the present invention;

[0026] Figure 3 It is a schematic diagram of the exploded structure of the rotating assembly;

[0027] Figure 4 for Figure 3 A schematic diagram of the structure of the intercepted part;

[0028] Figure 5 It is a schematic diagram of the partial structural disassembly of the rotating component;

[0029] Figure 6 It is a schematic diagram of the structure of the rotating component and the pipeline;

[0030] Figure 7 It is a schematic diagram of the structure of the installation component;

[0031] Figure 8 for Figure 7 The enlarged structural diagram at A in the middle;

[0032] Fig. 9 is a structural schematic diagram of the connecting mechanism;

[0033] Fig.10 for Fig. 9 The enlarged structural diagram at B in the middle;

[0034] Fig.11 It is a structural schematic diagram of the placement mechanism;

[0035] Fig.12 for Fig.11 Schematic diagram of the structure of the intercepted part.

[0036] In the figure: 1. fan; 2. connecting mechanism; 21. annular slide; 22. connecting ring; 23. annular slider; 24. rotating ring; 25. plug block; 26. slot; 27. connecting seat; 28. rotating rod; 29. ​​rotating plate; 201. first bolt; 202. rectangular groove; 203. connecting plate; 204. connecting block; 3. screening mechanism; 31. rotating assembly; 311. T-slot; 312. precision filter plate; 313. T-plate; 314. fixing block; 315. gear; 316. motor; 317. rotating shaft; 318. annular gear ring; 319. fixing ring; 3101. T-slot; 3102. T shaped slider; 3103, filter plate; 3104, limiting ring; 32, mounting assembly; 321, T-shaped rod; 322, rotating seat; 323, second bolt; 324, long block; 325, pushing plate; 326, arc-shaped long groove; 327, first arc-shaped slide groove; 328, first arc-shaped slider; 329, long groove; 3201, square seat; 4, placing mechanism; 41, placing filter plate; 42, hollow round cover; 43, second arc-shaped slide groove; 44, second arc-shaped slider; 45, telescopic plate; 46, mounting plate; 47, square groove; 48, hinged plate; 49, mounting block; 401, covering filter plate; 5, pipeline; 6, air inlet pipeline. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The present invention provides the following technical solutions: Example

[0039] Combination Figures 1 to 8 , an environmentally friendly fan purification and filtering device, comprising a fan 1 and a pipe 5, an air inlet pipe 6 is fixedly connected to the right side of the fan 1, the surface of the pipe 5 and the inside of the air inlet pipe 6 are plugged, a connecting mechanism 2 is fixedly connected between the air inlet pipe 6 and the pipe 5, a screening mechanism 3 is arranged inside the pipe 5, and a placing mechanism 4 is fixedly connected to the right side of the pipe 5;

[0040] The screening mechanism 3 includes a rotating assembly 31 and a mounting assembly 32, wherein the mounting assembly 32 is disposed on the rotating assembly 31;

[0041] The rotating assembly 31 includes a T-slot 311, which is arranged around the left side of the inner wall of the pipeline 5. A T-plate 313 is slidably connected inside the T-slot 311. A precision filter plate 312 is fixedly connected inside the four T-plates 313. A limit ring 3104 is fixedly connected inside the four T-plates 313. The upper and lower ends of the two limit rings 3104 are fixedly connected to a fixed block 314. A motor 316 is fixedly connected to one end of the inner side of the fixed block 314. A rotating shaft 317 is fixedly connected inside the motor 316. The rotating shaft 317 There are four of them in number and they form a group of two. The surface of the rotating shaft 317 is rotatably connected to the inside of the fixed block 314. The surface of the rotating shaft 317 is fixedly connected to the gear 315. A T-shaped slide groove 3101 is provided inside the limiting ring 3104. T-shaped sliders 3102 are slidably connected to the inside of the T-shaped slide groove 3101. An annular gear ring 318 is fixedly connected to the inside of the T-shaped slider 3102. The inner ring of the annular gear ring 318 is fixedly connected to the filter plate 3103. The annular gear ring 318 is fixedly connected to the side of the gear 315. A fixing ring 319 is fixedly connected to the side of the annular gear ring 318.

[0042] There are two limit rings 3104 , and both limit rings 3104 are arranged on the right side of the precision filter plate 312 . The inner surfaces of the left and right gears 315 are meshed and connected, and the outer surfaces of the left and right gears 315 are meshed and connected with the surface of the annular gear ring 318 .

[0043] Furthermore, when the gear 315 and the annular gear ring 318 are meshed and connected, the annular gear ring 318 can rotate on its own, and when the annular gear ring 318 rotates, it can drive the fixed ring 319 to rotate. At this time, the left and right filter plates 3103 can rotate in opposite directions and cooperate with the precision filter plate 312. A large amount of dust and particulate matter in the air can be filtered through multi-stage filtration and the exhaust function of the fan 1 can be used to completely purify the particulate matter.

[0044] The mounting assembly 32 includes a T-shaped rod 321, which is fixedly connected to the left side of the precision filter plate 312. The surface of the T-shaped rod 321 is rotatably connected to a rotating seat 322, and the other side of the rotating seat 322 is fixedly connected to a square seat 3201. The inner wall of the pipe 5 is provided with arc-shaped long grooves 326 all around, and the right side of the inner wall of the arc-shaped long groove 326 is provided with a first arc-shaped sliding groove 327. The first arc-shaped sliding groove 327 is slidably connected to the inside of the first arc-shaped sliding groove 327. The left side of the first arc-shaped sliding block 328 is fixedly connected to There is a pushing plate 325, and a long block 324 is fixedly connected to the side of the pushing plate 325 close to the square seat 3201. A long slot 329 is opened inside the square seat 3201, and the long slot 329 is set as an opening close to the side of the pushing plate 325. The surface of the long block 324 is inserted into the long slot 329 and fixedly connected to the pipe 5 through the second bolt 323. There are four arc-shaped long slots 326 and the side close to the T-shaped rod 321 is set as an opening. The four arc-shaped long slots 326 are all set on one side of the four T-shaped slots 311.

[0045] Furthermore, the rotating seat 322 rotates on the surface of the T-shaped rod 321, and the rotating seat 322 drives the square seat 3201 to be inserted into the arc-shaped long groove 326, and the push plate 325 is moved, and the push plate 325 drives the long block 324 to be inserted into the long groove 329, so that the precision filter plate 312 and the filter plate 3103 can be set in the pipeline 5, so as to avoid the precision filter plate 312 and the filter plate 3103 from moving in position in the pipeline 5 when the fan 1 is running. Example

[0046] See also Figure 1-10On the basis of the first embodiment, the connection mechanism 2 further comprises a connection ring 22, the connection ring 22 is fixedly connected to the left side surface of the pipe 5, an annular slide groove 21 is provided on the right side of the connection ring 22, an annular slide block 23 is slidably connected to the inside of the annular slide groove 21, a connection block 204 is fixedly connected to the right side of the annular slide block 23, a connection plate 203 is fixedly connected to the left side of the connection block 204, a rotating ring 24 is fixedly connected to the surface of the connecting plate 203, the rotating ring 24 is arranged on the left side surface of the pipe 5, a connection seat 27 is fixedly connected to the surface of the air inlet pipe 6, and the inside of the connection seat 27 A slot 26 is provided, and a plug-in block 25 is fixedly connected to the left side of the connecting plate 203. Rectangular slots 202 are provided on both the front and rear sides of the plug-in block 25. The left sides and outer sides of the rectangular slots 202 on the front and rear sides are both set as openings. A rotating rod 28 is fixedly connected to the side of the connecting seat 27 away from the air inlet duct 6. A rotating plate 29 is rotatably connected to the surface of the rotating rod 28. The surface of the rotating plate 29 is plugged into the inside of the rectangular slot 202 and is fixedly connected to the plug-in block 25 through the first bolt 201. The slot 26 is set as openings on the side away from the air inlet duct 6 and the front and rear ends. The surface of the plug-in block 25 is plugged into the inside of the slot 26.

[0047] Furthermore, the connecting plate 203 drives the connecting block 204 to move, and the connecting plate 203 drives the plug block 25 to be inserted into the slot 26. When the rotating plate 29 is turned and rotated on the surface of the rotating rod 28 and inserted into the rectangular groove 202, the pipe 5 can be conveniently placed on the right side of the air inlet pipe 6. The particles in the air can be removed by the cooperation of the precision filter plate 312 and the filter plate 3103. At the same time, when the pipe 5 is removed in reverse, the precision filter plate 312 and the filter plate 3103 can be easily cleaned. Example

[0048] See also Figure 1-12 On the basis of the first embodiment, the placement mechanism 4 further comprises a hollow circular cover 42, the hollow circular cover 42 is fixedly connected to the right side of the pipe 5, a filter plate 41 is fixedly connected to the left side of the inner circle of the hollow circular cover 42, second arc-shaped slide grooves 43 are provided on the upper and lower surfaces of the hollow circular cover 42, a covering filter plate 401 is hinged on the back of the hollow circular cover 42, and mounting blocks 49 are fixedly connected to the upper and lower ends of the right side of the covering filter plate 401, a second arc-shaped slider 44 is slidably connected inside the second arc-shaped slide groove 43, a mounting plate 46 is fixedly connected on the outer side of the second arc-shaped slider 44, a square groove 47 is provided inside the mounting plate 46, a hinged plate 48 is hinged on the right side of the mounting plate 46, and the other side of the hinged plate 48 is hinged to the left side of the mounting block 49, and telescopic plates 45 are fixedly connected to the four sides of the right side surface of the pipe 5, and the left and right sides of the square groove 47 are set to be openings, and the surface of the telescopic plate 45 and the inside of the square groove 47 are plugged.

[0049] Furthermore, the mounting plate 46 drives the second arc-shaped slider 44 to slide in the second arc-shaped slide groove 43. When the mounting plate 46 moves, the covering filter plate 401 can be hinged and rotated on the right side of the hollow round cover 42, so that the covering filter plate 401 can cover the right side of the hollow round cover 42, and the activated carbon can be laid on the right side of the filter plate 41 without falling off, thereby facilitating the treatment of paint particles in the air.

[0050] In actual operation, when the device is used, when filtering the air inlet duct 6 of the fan 1, the duct 5 is first inserted into the air inlet duct 6. At this time, the connecting plate 203 can be moved, so that the connecting plate 203 drives the connecting block 204 to move, and the connecting block 204 drives the annular slider 23 to slide in the annular slide groove 21 until the connecting plate 203 drives the plug 25 to be inserted into the slot 26. Then, the rotating plate 29 is rotated on the surface of the rotating rod 28 until the rotating plate 29 is inserted into the rectangular groove 202. The plug 25 and the rotating plate 29 are threadedly fixed by the first bolt 201, which can facilitate the duct 5 to be conveniently placed on the right side of the air inlet duct 6. The fine filter plate 312 and the filter plate 3103 can be used to remove the particles in the air. At the same time, when the duct 5 is removed in the reverse direction, the fine filter plate 312 and the filter plate 3103 can be easily cleaned.

[0051] When the motor 316 is started, the motor 316 drives the rotating shaft 317 to rotate, and the rotating shaft 317 drives the gear 315 to rotate. When the two gears 315 rotate, the two gears 315 rotate in opposite directions. At the same time, when the gear 315 and the annular gear ring 318 are meshed and connected, the annular gear ring 318 can rotate on its own. At the same time, the left and right annular gear rings 318 rotate in opposite directions. When the annular gear ring 318 rotates, it can drive the fixed ring 319 to rotate, and the fixed ring 319 drives the T-shaped slider 3102 to rotate in the T-shaped slide groove 3101. At this time, the left and right filter plates 3103 can rotate in opposite directions and cooperate with the precision filter plate 312. A large amount of dust and particulate matter in the air can be filtered through multi-stage filtration and the exhaust function of the fan 1 can be used to completely purify the particulate matter.

[0052] By inserting the T-shaped plate 313 into the T-shaped slot 311, the rotating seat 322 is moved to rotate on the surface of the T-shaped rod 321, and the rotating seat 322 drives the square seat 3201 to be inserted into the arc-shaped long slot 326. By moving the push plate 325, the push plate 325 drives the first arc-shaped slider 328 to slide in the first arc-shaped slide slot 327. At the same time, the push plate 325 drives the long block 324 to be inserted into the long slot 329. The square seat 3201, the long block 324 and the pipe 5 are respectively threadedly fixed by the second bolt 323. At this time, the precision filter plate 312 and the filter plate 3103 can be set in the pipe 5 to prevent the precision filter plate 312 and the filter plate 3103 from moving in the pipe 5 when the fan 1 is running.

[0053] When the activated carbon is laid on the right side of the filter plate 41, the mounting plate 46 is pulled so that the mounting plate 46 drives the second arc-shaped slider 44 to slide in the second arc-shaped slide groove 43. Since the mounting plate 46, the hinged plate 48 and the mounting block 49 are hinged, when the mounting plate 46 moves, the covering filter plate 401 can be hinged and rotated on the right side of the hollow round cover 42, so that the covering filter plate 401 can cover the right side of the hollow round cover 42, and the activated carbon will not fall when it is laid on the right side of the filter plate 41, so that the paint particles in the air can be processed.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmentally friendly fan purification and filtering device, comprising a fan (1) and a pipeline (5), characterized in that: The right side of the fan (1) is fixedly connected to an air inlet duct (6); the surface of the duct (5) is plugged into the inside of the air inlet duct (6); a connecting mechanism (2) is fixedly connected between the air inlet duct (6) and the duct (5); a screening mechanism (3) is provided inside the duct (5); and a placement mechanism (4) is fixedly connected to the right side of the duct (5); The screening mechanism (3) comprises a rotating assembly (31) and a mounting assembly (32), wherein the mounting assembly (32) is arranged on the rotating assembly (31); The rotating assembly (31) comprises a T-shaped slot (311), wherein the T-shaped slot (311) is provided around the left side of the inner wall of the pipeline (5), a T-shaped plate (313) is slidably connected inside the T-shaped slot (311), four T-shaped plates (313) are fixedly connected inside the four T-shaped plates (313), limiting rings (3104) are fixedly connected inside the four T-shaped plates (313), both upper and lower ends of the two limiting rings (3104) are fixedly connected to fixing blocks (314), one inner end of the fixing block (314) is fixedly connected to a motor (316), the inner side of the motor (316) is fixedly connected to a rotating shaft (317), and the rotating shaft ( The number of the rotating shaft (317) is four and they form a group of two. The surface of the rotating shaft (317) is rotatably connected to the inside of the fixed block (314). The surface of the rotating shaft (317) is fixedly connected to a gear (315). A T-shaped slide groove (3101) is provided on the inner side of the limiting ring (3104). T-shaped sliders (3102) are slidably connected to the inside of the T-shaped slide groove (3101) on all sides. An annular gear ring (318) is fixedly connected to the inner side of the T-shaped slider (3102). A filter plate (3103) is fixedly connected to the inner ring of the annular gear ring (318). A fixing ring (319) is fixedly connected to the side of the annular gear ring (318) close to the gear (315). The inner surfaces of the two left and right gears (315) are meshed and connected, and the outer surfaces of the two left and right gears (315) are both meshed and connected with the surface of the annular gear ring (318); The mounting assembly (32) comprises a T-shaped rod (321), wherein the T-shaped rod (321) is fixedly connected to the left side of the precision filter plate (312), a rotating seat (322) is rotatably connected to the surface of the T-shaped rod (321), and a square seat (3201) is fixedly connected to the other side of the rotating seat (322), and an arc-shaped long groove (326) is provided on the inner wall of the pipe (5) on all sides, and a first arc-shaped sliding groove (327) is provided on the right side of the inner wall of the arc-shaped long groove (326), and a first arc-shaped sliding block (328) is slidably connected to the inside of the first arc-shaped sliding groove (327), and the left side of the first arc-shaped sliding block (328) is fixedly connected to the A push plate (325) is connected, and a long block (324) is fixedly connected to the push plate (325) on one side close to the square seat (3201). A long slot (329) is provided inside the square seat (3201), and the long slot (329) is arranged to be open on the side close to the push plate (325). The surface of the long block (324) is inserted into the long slot (329) and is fixedly connected to the pipe (5) through a second bolt (323). There are four arc-shaped long slots (326) and the side close to the T-shaped rod (321) is arranged to be open. The four arc-shaped long slots (326) are all arranged on one side of the four T-shaped slots (311); The placement mechanism (4) comprises a hollow round cover (42), the hollow round cover (42) being fixedly connected to the right side of the pipe (5), a filter plate (41) being fixedly connected to the left side of the inner circle of the hollow round cover (42), second arc-shaped sliding grooves (43) being provided on both upper and lower surfaces of the hollow round cover (42), a covering filter plate (401) being hingedly connected to the back of the hollow round cover (42), a mounting block (49) being fixedly connected to both upper and lower ends of the right side of the covering filter plate (401), and a second arc-shaped sliding groove (43) being slidably connected inside. A second arc-shaped slider (44), the outer side of the second arc-shaped slider (44) is fixedly connected to a mounting plate (46), the mounting plate (46) is provided with a square groove (47), the right side of the mounting plate (46) is hinged to a hinged plate (48), the other side of the hinged plate (48) is hinged to the left side of the mounting block (49), the right side surface of the pipe (5) is fixedly connected to telescopic plates (45) all around, the left and right sides of the square groove (47) are both set to be openings, and the surface of the telescopic plate (45) and the inside of the square groove (47) are plugged into each other.

2. The environmentally friendly fan purification and filtering device according to claim 1 is characterized in that: There are two limit rings (3104), and both limit rings (3104) are arranged on the right side of the precision filter plate (312).

3. The environmentally friendly fan purification and filtering device according to claim 1 is characterized in that: The connecting mechanism (2) comprises a connecting ring (22), the connecting ring (22) being fixedly connected to the left side surface of the pipe (5), the connecting ring (22) being provided with an annular slide groove (21) on the right side, an annular slide block (23) being slidably connected to the inside of the annular slide groove (21) on all sides, a connecting block (204) being fixedly connected to the right side of the annular slide block (23), a connecting plate (203) being fixedly connected to the left side of the connecting block (204), a rotating ring (24) being fixedly connected to the surface of the connecting plate (203), the rotating ring (24) being arranged on the left side surface of the pipe (5), and the surface of the air inlet pipe (6) being fixedly connected to the A connecting seat (27) is provided, a slot (26) is provided inside the connecting seat (27), an insert block (25) is fixedly connected to the left side of the connecting plate (203), a rectangular groove (202) is provided on both the front and rear sides of the insert block (25), and the left side and the outer side of the rectangular groove (202) on both the front and rear sides are configured as openings, a rotating rod (28) is fixedly connected to the side of the connecting seat (27) away from the air inlet duct (6), a rotating plate (29) is rotatably connected to the surface of the rotating rod (28), and the surface of the rotating plate (29) is plugged into the inside of the rectangular groove (202) and fixedly connected to the insert block (25) through a first bolt (201).

4. The environmentally friendly fan purification and filtering device according to claim 3 is characterized in that: The slot (26) is configured to be open on one side away from the air inlet duct (6) and at both the front and rear ends, and the surface of the insert block (25) is plugged into the interior of the slot (26).

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