Integrated fan filtering device

Abstract

An integrated fan filtering device relates to the technical field of filtering devices and is characterized in that a plurality of filtering air ducts are arranged on a fixed box, a filtering membrane is arranged in each filtering air duct, a plurality of partition plates are uniformly arranged in each filtering air duct in the circumferential direction, and an adsorption filtering assembly for performing secondary adsorption filtering on air is arranged between every two adjacent partition plates; and the filtered air is blown out through the air outlet plate. Large particulate matter in air is filtered through the filter membrane, the polygonal filter frame and the filter hemispheroid protrusions are made of montmorillonite or natural zeolite materials, and various air pollutants are removed in the field of air filtration; the Al2O3-TiO2 composite coating or the Al-doped TiO2 nano-silver-titanium dioxide composite coating coated on each filtering hemispheroid bulge can adsorb harmful substances in the air, and the vibration rod can disturb the air entering the filtering air duct, so that the adsorption effect on harmful gases in the air is improved; meanwhile, large particles in the air can be prevented from entering the honeycomb-shaped filtering grids to cause blockage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering device, in particular to an integrated fan filtering device. BACKGROUND

[0002] The integrated fan filtering device is a self-powered air supply filtering device, a modularized end air supply device with filtering function, which can be widely applied to dust-free rooms, dust-free operation tables and the like.

[0003] The existing filtering device adopts multiple filter screens, and part of dust particles can easily enter the inside of filter material to block the filter element, thereby causing the filtering effect to be reduced. For example, the dust blocking cake formed by submicron dust particles can also affect the filtering efficiency of the polytetrafluoroethylene film filter material after long-term use, and the cleaning process is not convenient. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide an integrated fan filtering device with high filtering effect and improved desorption regeneration.

[0005] The technical solution adopted to solve the above technical problem is that an air inlet disc for air inlet is arranged on one side of a filter box, air enters the inside of the filter box through the air inlet of the air inlet disc for filtering, a fixed box is arranged in the inside of the filter box, a plurality of filter air ducts which are in communication with the air inlet of the air inlet disc are arranged on the fixed box, a filter membrane for filtering air for the first time is arranged in each filter air duct, the filter membrane is close to the air inlet disc, a plurality of partition plates are uniformly arranged in the inside of each filter air duct along the circumferential direction, an adsorption and filtration assembly for adsorbing and filtering air for the second time is arranged between every two adjacent partition plates, the adsorption and filtration assembly is located on one side of the filter membrane, the outlet end of the adsorption and filtration assembly is in communication with the outlet end of the filter air duct, an air outlet plate which is in communication with the outlet end of the filter air duct is arranged on the other side of the filter box, and filtered air is blown out through the air outlet plate.

[0006] Further, the adsorption and filtration assembly is that a plurality of polygonal filter frame bodies for filtering gas are arranged between every two adjacent partition plates, the plurality of polygonal filter frame bodies for filtering gas are fixedly connected and arranged in a stacked manner through the connecting plates to form a filter grid, a filter hemisphere protrusion for filtering gas is arranged on the inner side of each polygonal filter frame body, an adsorption composite coating is coated on the outer surface of each filter hemisphere protrusion, the adsorption composite coating adsorbs harmful substances in the air for second adsorption and filtration.

[0007] Further, the polygonal filter frame body is made of montmorillonite or natural zeolite, the filter hemispherical protrusions are made of montmorillonite or natural zeolite, and the composite coating is an Al2O3-TiO2 composite coating or an Al-doped TiO2 nano-silver-titanium dioxide composite coating.

[0008] Further, the polygonal filter frame body is a regular hexagonal filter frame body, a plurality of regular hexagonal filter frame bodies are fixedly connected and arranged in a stacked manner by connecting plates to form a honeycomb filter grid, and each baffle is a wave-shaped baffle and is provided with an electric heating sheet.

[0009] Further, the filter air duct is provided with a plurality of ultraviolet lamps for irradiating the filter hemispherical protrusions and the polygonal filter frame body.

[0010] Further, each filter hemispherical protrusion is provided with a base, each base is provided with a vibration rod inserted therein, and a tension ring is arranged at the connection between the base and the vibration rod.

[0011] Further, each filter air duct is provided with a waste gas passage, a plurality of baffles are uniformly distributed on the outer circumferential side wall of the waste gas passage, a sealing block is arranged on the inner bottom of each waste gas passage, the sealing block is screw-connected with the waste gas passage, each waste gas passage is provided with an air inlet hole at the bottom for communicating with the filter air duct, and each waste gas passage is provided with an air outlet hole at the top for communicating with the filter air duct, so that the desorbed substances on the filter assembly enter the waste gas passage through the air inlet hole, an electromagnet is arranged in the waste gas passage, the electromagnet is connected with a piston through a spring, the piston is located in the waste gas passage, and the piston draws waste gas into the waste gas passage while pressing the air in the waste gas passage into the filter air duct for repeated filtration.

[0012] Further, the air inlet disc is provided with a plurality of air inlets in the circumferential direction, each air inlet is arranged in a ring shape around the central axis of the air inlet disc, and the air outlet plate is provided with a plurality of horizontal air outlets.

[0013] Further, the filter box body is provided with a support plate, the support plate is provided with a motor, the output shaft of the motor is fixedly connected with an air inlet fan, the air inlet fan is located close to the air inlet disc and in the filter box body, and the air inlet fan rotates to draw air into the filter box body through the air inlet disc.

[0014] Further, the fixed box is provided with a heat-conducting plate in contact with the support plate, and the fixed box and the support plate are made of heat-conducting materials.

[0015] The beneficial effects of the present application are as follows: (1) In the present application, the filtering membrane filters larger particulate matter in the air, the polygonal filter frame and the filtering hemispherical protrusions are made of montmorillonite or natural zeolite material, both of which are porous silicate minerals, due to their crystal structure (layered or framework structure) with high specific surface area, ion exchange capacity and adsorption performance, a variety of air pollutants can be removed in the field of air filtration, the Al2O3-TiO2 composite coating or Al-doped TiO2 nano-silver-titanium dioxide composite coating coated on each filtering hemispherical protrusion can adsorb harmful substances in the air, the vibration rod can disturb the airflow entering the filtering air duct, improve the adsorption effect of harmful gases in the air, and at the same time, the large particles in the air can be prevented from entering the honeycomb filter grid to cause blockage, and the filtering effect is high.

[0016] (2) In the present application, the electric heating sheet can heat the montmorillonite or natural zeolite material, and the adsorbed substances can be separated from the coating surface due to the thermal kinetic energy exceeding the adsorption force, so as to empty the adsorption sites of the montmorillonite or natural zeolite material and restore the adsorption capacity of the composite coating, thereby avoiding the failure due to adsorption saturation during continuous use, and the ultraviolet radiation lamp irradiates the composite coating on the filtering hemispherical protrusion, the composite coating reflects the ultraviolet light into the microchannels inside the honeycomb filter grid, and the catalytic regeneration is assisted.

[0017] (3) In the present application, the electromagnet is magnetically connected with the piston to drive the piston to move in the vertical direction inside the exhaust gas channel, the desorbed gas enters the exhaust gas channel through the air inlet hole, and then the exhaust gas is extracted from the filtering air duct, and the exhaust gas is filtered again by the filtering membrane and the adsorption filter assembly, thereby improving the filtering effect of the exhaust gas.

[0018] (4) In the present application, the tension ring will shrink after being heated to the deformation temperature, and a radial gap is formed between the tension ring and the vibration rod, at this time, the piston will vibrate slightly during the air suction recovery process, and the vibration will be transmitted to the filtering hemispherical protrusion and the polygonal filter frame, so that the dust adhered to the surface of the filtering hemispherical protrusion is accelerated to separate under the double action of vibration and airflow. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of one embodiment of the integrated fan filtering device of the present application.

[0020] Figure 2 is Figure 1 is a structural schematic view from another angle.

[0021] Figure 3 is a structural schematic view of the motor and the air inlet fan.

[0022] Figure 4 is a structural schematic view of the internal fixed box of the filtering box.

[0023] Figure 5 This is a schematic diagram of the bottom structure of the fixed box.

[0024] Figure 6 This is a schematic diagram of the adsorption filtration component.

[0025] Figure 7 This is a schematic diagram of the structure of an electromagnet, spring, and piston.

[0026] Figure 8 This is a schematic diagram of the component structure on the polygonal filter frame.

[0027] Figure 9 This is a structural diagram of the vibrating rod, heat-conducting plate, and tensioning ring.

[0028] Reference numerals: 1. Air inlet plate; 2. Filter housing; 3. Handle; 4. Air outlet plate; 5. Support plate; 6. Motor; 7. Air intake fan; 8. Filter duct; 9. Filter membrane; 10. Fixing box; 11. Partition plate; 12. Air inlet hole; 13. Exhaust gas passage; 14. Electromagnet; 15. Polygonal filter frame; 16. Filter hemispherical protrusion; 17. Connecting plate; 18. Spring; 19. Piston; 20. Base; 21. Vibrating rod; 22. Heat conduction plate; 23. Tensioning ring; 24. Sealing block; 25. Air outlet. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] like Figures 1 to 5 As shown, the integrated fan filter device in this embodiment is composed of an air inlet plate 1, a filter box 2, a handle 3, an air outlet plate 4, a support plate 5, a motor 6, an air intake fan 7, a filter duct 8, a filter membrane 9, a fixed box 10, and an adsorption filter assembly connected together.

[0031] An air inlet disc 1 is provided on one side of the filter housing 2 for air intake. The air inlet disc 1 has multiple rings of air inlets machined along its circumference, with each ring of air inlets arranged in a ring around the central axis of the air inlet disc 1. Air enters the filter housing 2 through the air inlets of the air inlet disc 1 for filtration. A support plate 5 is provided inside the filter housing 2, and a motor 6 is mounted on the support plate 5. The output shaft of the motor 6 is fixedly connected to an intake fan 7. The intake fan 7 is located close to the air inlet disc 1 and inside the filter housing 2. The rotation of the intake fan 7 is used to draw air into the filter housing 2 through the air inlet disc 1.

[0032] Inside the filter housing 2, there is a fixed box 10. The fixed box 10 has multiple filter ducts 8 that are connected to the air inlet of the air inlet plate 1. Each filter duct 8 has a filter membrane 9 that performs the first filtration of the air. The filter membrane 9 is close to the air inlet plate 1. Inside each filter duct 8, multiple partitions 11 are evenly arranged along the circumference. Between every two adjacent partitions 11, there is an adsorption filter assembly that performs the second adsorption filtration of the air. The adsorption filter assembly is located on one side of the filter membrane 9. The outlet end of the adsorption filter assembly is connected to the outlet end of the filter duct 8. On the other side of the filter housing 2, there is an air outlet plate 4 that is connected to the outlet end of the filter duct 8. The air outlet plate 4 has multiple horizontal air outlets. The direction of each horizontal air outlet is horizontal to each other. The filtered air is blown out through the air outlet plate 4.

[0033] like Figures 6 to 9 As shown, the adsorption filter assembly is composed of a partition 11, an air inlet 12, an exhaust gas channel 13, an electromagnet 14, a polygonal filter frame 15, a filter hemispherical protrusion 16, a connecting plate 17, a spring 18, a piston 19, a base 20, a vibration rod 21, a heat-conducting plate 22, a tensioning ring 23, a sealing block 24, an ultraviolet spotlight, an electric heating element, and an air outlet 25.

[0034] The adsorption filtration assembly consists of multiple polygonal filter frames 15 for filtering gas, arranged between each pair of adjacent partitions 11. The partitions 11 are corrugated, and each partition 11 is equipped with an electric heating element. The multiple polygonal filter frames 15 are fixedly connected and stacked to form a filter grid via connecting plates 17. In this embodiment, the polygonal filter frames 15 are regular hexagonal, and the multiple regular hexagonal filter frames are fixedly connected and stacked to form a honeycomb filter grid. Each polygonal filter frame 15 has a filter hemispherical protrusion 16 on its inner side for filtering gas. The outer surface of each filter hemispherical protrusion 16 is coated with an adsorption composite coating, which is either an Al2O3-TiO2 composite coating or an Al-doped TiO2 nano-silver-titanium dioxide composite coating. The adsorption composite coating adsorbs harmful substances in the air for a second adsorption filtration. Each filter hemispherical protrusion 16 is provided with a base 20, and a vibrating rod 21 is inserted inside each base 20. A tension ring 23 is provided at the connection between the base 20 and the vibrating rod 21. The tension ring 23 is made of nickel-titanium alloy. The deformation temperature of the tension ring 23 is consistent with the regeneration temperature of the montmorillonite or natural zeolite material, and its deformation temperature is set in the range of -20°C to +120°C. In addition, the surface of the vibrating rod can also be coated with a composite coating to further improve the reflection effect of ultraviolet rays.

[0035] Multiple ultraviolet spotlights are installed on the inner circumferential sidewall of the filter duct 8 to irradiate the filter hemispherical protrusion 16 and the polygonal filter frame 15. The top of the fixed box 10 has a heat-conducting plate 22 that contacts the support plate 5. Both the fixed box 10 and the support plate 5 are made of heat-conducting materials.

[0036] Each of the aforementioned filter ducts 8 is provided with an exhaust gas channel 13. Multiple baffles 11 are evenly distributed on the outer circumferential sidewalls of the exhaust gas channel 13. A sealing block 24 is provided at the bottom of each exhaust gas channel 13. The sealing block 24 is threadedly connected to the inside of the exhaust gas channel 13, which facilitates the disassembly of the sealing block 24. An air inlet 12 communicating with the filter duct 8 is machined at the bottom of each exhaust gas channel 13. An air outlet 25 communicating with the filter duct 8 is machined at the top of each exhaust gas channel 13. The desorbed material on the filter assembly enters the interior of the exhaust gas channel 13 through the air inlet 12. An electromagnet 14 is provided in the exhaust gas channel 13. The electromagnet 14 is connected to a piston 19 through a spring 18. The piston 19 is located in the exhaust gas channel 13. The piston 19 draws the exhaust gas into the exhaust gas channel 13 and simultaneously forces the air in the exhaust gas channel 13 into the filter duct 8 for repeated filtration.

[0037] The working principle of this embodiment is as follows: (1) First filtration of air: Start motor 6, the output shaft of motor 6 drives the intake fan 7 to rotate, and the air enters the filter box 2 through the multi-ring air inlet of the air inlet plate 1. The air is filtered for the first time through the filter membrane 9 inside the multiple filter air ducts 8 on the fixed box 10. The filter membrane 9 is used to filter larger particulate matter in the air.

[0038] (2) Secondary adsorption filtration of air: After the first filtration, the air enters multiple adsorption filtration components, which adsorb harmful substances in the air. The polygonal filter frame 15 is made of montmorillonite or natural zeolite, and the filter hemispherical protrusions 16 are also made of montmorillonite or natural zeolite. Montmorillonite and natural zeolite are both porous silicate minerals. Due to their crystal structure (layered or framework structure), they have high specific surface area, ion exchange capacity and adsorption performance. In the field of air filtration, they remove a variety of air pollutants, such as small molecule inorganic gases (CO2, NOx), formaldehyde, benzene and other substances. The multiple filter hemispherical protrusions 16 in each polygonal filter frame 15 are coated with an Al2O3-TiO2 composite coating or Al-doped The TiO2 nano-silver-titanium dioxide composite coating can adsorb harmful substances in the air. In the Al2O3-TiO2 composite coating, TiO2 provides basic polar adsorption sites and pore structure, while Al2O3 enhances the adsorption of highly polar substances and specific inorganic pollutants. It can adsorb organic pollutants such as formaldehyde, acetaldehyde, and acetone, as well as particulate matter and suspended impurities such as PM2.5, dust, pollen, and mold spores. The tension ring 23 supports the vibrating rod in the filtering state. The vibrating rod 21 can turbulent the air entering the filter duct 8, improving the adsorption effect of harmful gases in the air. At the same time, it can prevent large particles in the air from entering the honeycomb filter mesh and causing blockage, and it will not generate continuous noise from vibration. The air after the second adsorption and filtration is blown out through multiple horizontal air outlets of the air outlet plate 4.

[0039] When it is necessary to desorb and regenerate the harmful substances adsorbed by the polygonal filter frame 15 and the filter hemispherical protrusion 16, the montmorillonite or natural zeolite material is heated. At the same time, the motor 6 generates heat during operation. The heat from the motor 6 is transferred to the adsorption filter assembly inside the fixed box 10 through the support plate 5 and the heat conduction plate 22. The electric heating element heats the montmorillonite or natural zeolite material to a temperature above 55°C. The adsorbed substances will detach from the coating surface because the thermal kinetic energy exceeds the adsorption force. This process can clear the adsorption sites of the montmorillonite or natural zeolite material, allowing the composite coating to regain its adsorption capacity and preventing it from failing due to adsorption saturation during continued use. The ultraviolet light irradiates the composite coating on the filter hemispherical protrusion 16. The composite coating reflects the ultraviolet light into the microchannels inside the honeycomb filter mesh, assisting the catalytic regeneration of the polygonal filter frame 15 and the filter hemispherical protrusion 16. Through the synergy of photochemical and thermal effects, the desorption rate is improved.

[0040] In this embodiment, after the harmful gas is adsorbed by the zeolite material, it undergoes photocatalytic decomposition by ultraviolet light and the titanium dioxide coating. The desorbed gas is not the original adsorbed waste gas; some of the residual, undecomposed harmful gas will be adsorbed again. This desorption process is a material regeneration process. Regular desorption is the key to maintaining its long-term high-efficiency adsorption performance. By actively removing residual pollutants through pyrolysis and ultraviolet irradiation, the material's adsorption performance is restored, avoiding the need for frequent replacement of parts or the use of filters with high regeneration costs.

[0041] When it is necessary to desorb and regenerate the harmful substances adsorbed by the polygonal filter frame 15 and the filter hemispherical protrusion 16, the electromagnet 14 is activated. When the electromagnet 14 is energized, it is magnetically connected to the piston 19. The electromagnet 14 and the piston 19 are brought close together, causing the piston 19 to move vertically inside the exhaust gas channel 13. The desorbed gas is then drawn into the exhaust gas channel 13 through the air inlet 12 and then extracted out of the filter duct 8 through the air outlet 25. The motor 6 is then activated again, and the exhaust gas passes through the filter membrane 9 and the adsorption filter assembly for re-filtration. This allows the exhaust gas to be extracted above the adsorption filter assembly more effectively, extending the residence time of the exhaust gas and enabling better filtration.

[0042] Meanwhile, in the desorption and regeneration state, the tension ring 23 will deform after being heated to the deformation temperature, and a radial gap will be formed between the tension ring 23 and the vibrating rod 21. At this time, during the intake and recovery process, the airflow passing through the vibrating rod 21 will cause it to vibrate slightly. The vibration will be transmitted to the filter hemispherical protrusion 16 and the polygonal filter frame 15, so that the dust adhering to the surface of the filter hemispherical protrusion 16 will be accelerated to detach under the dual action of vibration and airflow.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An integrated fan filtration device, characterized in that: An air inlet plate (1) for air intake is provided on one side of the filter box (2). Air enters the filter box (2) through the air inlet of the air inlet plate (1) for filtration. A fixed box (10) is provided inside the filter box (2). Multiple filter ducts (8) connected to the air inlet of the air inlet plate (1) are provided on the fixed box (10). A filter membrane (9) for the first filtration of air is provided in each filter duct (8). The filter membrane (9) is close to the air inlet plate (1). Multiple partitions (11) are evenly arranged in the circumferential direction inside each filter duct (8). An adsorption filter assembly for the second adsorption filtration of air is provided between every two adjacent partitions (11). The adsorption filter assembly is located on one side of the filter membrane (9). The outlet end of the adsorption filter assembly is connected to the outlet end of the filter duct (8). An air outlet plate (4) connected to the outlet end of the filter duct (8) is provided on the other side of the filter box (2). The filtered air is blown out through the air outlet plate (4).

2. The integrated fan filtration device according to claim 1, characterized in that, The adsorption filtration assembly is as follows: multiple polygonal filter frames (15) for filtering gas are respectively arranged between each two adjacent partitions (11). The multiple polygonal filter frames (15) for filtering gas are fixedly connected and stacked to form a filter grid through connecting plates (17). Each polygonal filter frame (15) has a filter hemispherical protrusion (16) for filtering gas on its inner side. The outer surface of each filter hemispherical protrusion (16) is coated with an adsorption composite coating. The adsorption composite coating adsorbs harmful substances in the air for a second adsorption filtration.

3. The integrated fan filtration device according to claim 2, characterized in that: The polygonal filter frame (15) is made of montmorillonite or natural zeolite, the filter hemispherical protrusion (16) is made of montmorillonite or natural zeolite, and the composite coating is an Al2O3-TiO2 composite coating or an Al-doped TiO2 nano-silver-titanium dioxide composite coating.

4. The integrated fan filtration device according to claim 2, characterized in that: The polygonal filter frame (15) is a regular hexagonal filter frame. Multiple regular hexagonal filter frames are fixedly connected and stacked to form a honeycomb filter grid through connecting plates (17). The partition (11) is a wavy partition, and each partition (11) is provided with an electric heating element.

5. The integrated fan filtration device according to claim 2, characterized in that: The inner circumferential sidewall of the filter duct (8) is provided with multiple ultraviolet spotlights that irradiate the filter hemispherical protrusion (16) and the polygonal filter frame (15).

6. The integrated fan filtration device according to claim 2, characterized in that: Each of the filter hemispherical protrusions (16) is provided with a base (20), and each base (20) is provided with a vibrating rod (21). A tensioning ring (23) is provided at the connection between the base (20) and the vibrating rod (21).

7. The integrated fan filtration device according to claim 1, characterized in that: Each of the aforementioned filter ducts (8) is provided with an exhaust gas channel (13) inside. Multiple baffles (11) are evenly distributed on the outer circumferential sidewall of the exhaust gas channel (13). A sealing block (24) is provided at the bottom of each exhaust gas channel (13). The sealing block (24) is threadedly connected to the inside of the exhaust gas channel (13). An air inlet hole (12) communicating with the filter duct (8) is machined at the bottom of each exhaust gas channel (13). An air inlet hole (12) communicating with the filter duct (8) is machined at the top of each exhaust gas channel (13). The air outlets (25) of the channels (8) are interconnected. The desorbed substances on the filter components enter the interior of the exhaust gas channel (13) through the air inlet (12). An electromagnet (14) is installed in the exhaust gas channel (13). The electromagnet (14) is connected to the piston (19) through the spring (18). The piston (19) is located in the exhaust gas channel (13). The piston (19) draws the exhaust gas into the exhaust gas channel (13) and at the same time forces the air in the exhaust gas channel (13) into the filter air channel (8) for repeated filtration.

8. The integrated fan filtration device according to claim 1, characterized in that: The air inlet plate (1) is machined with multiple air inlets along the circumference, and each air inlet is arranged in a ring around the central axis of the air inlet plate (1). The air outlet plate (4) is machined with multiple horizontal air outlets.

9. The integrated fan filtration device according to claim 1, characterized in that: The filter box (2) is provided with a support plate (5), and a motor (6) is provided on the support plate (5). The output shaft of the motor (6) is fixedly connected to the air intake fan (7). The air intake fan (7) is close to the air intake plate (1) and located inside the filter box (2). The air intake fan (7) rotates to draw air into the filter box (2) through the air intake plate (1).

10. The integrated fan filtration device according to claim 9, characterized in that: The top of the fixed box (10) has a heat-conducting plate (22) that contacts the support plate (5). Both the fixed box (10) and the support plate (5) are made of heat-conducting materials.

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