Gradient multi-layer composite structure air filter element

Abstract

The utility model relates to the technical field of air filter elements, in particular to a gradient multi-layer composite structure air filter element which comprises a bottom plate, a rotating assembly is rotationally installed at the top of the bottom plate, a filtering assembly used for multi-layer gradient filtering is installed outside the rotating assembly in a pluggable mode, and a plurality of supporting rods are fixedly arranged at the top of the bottom plate. The multiple supporting rods are uniformly distributed on the outer side of the filtering assembly, and brushes are fixedly arranged on the sides, close to the filtering assembly, of the multiple supporting rods; by arranging the rotating assembly, the transmission assembly and the brush, during use, filtered air flow blows the transmission assembly to drive the filter layer outside the rotating assembly to rotate, so that the windward side of the filter layer is continuously changed, the circumferential surface of the filter layer is uniformly contacted with the filtered air flow, and the utilization rate of the filter layer and the load distribution uniformity are improved; and dust particles on the surface are stripped, the cleaning period is prolonged, and frequent cleaning is not needed.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, and in particular to a gradient multilayer composite structure air filter. Background Technology

[0002] An air filter is a type of filter, also known as an air cartridge, air purifier, or filter element. It is mainly used for air filtration in engineering vehicles, automobiles, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms.

[0003] A multi-layer air filter element disclosed in Chinese patent CN217472992U adopts a detachable connection structure. The detachable design of the upper and lower mounting plates and the outer filter screen allows for easy disassembly and disposal of the outer filter screen, avoiding waste of the upper and lower mounting plates when they become obsolete. However, while solving this problem, this multi-layer air filter element has the following drawbacks: During use, its windward side remains fixed, and dust particles preferentially accumulate on the surface filter paper of the windward side. The leeward side experiences a significant reduction in dust accumulation due to airflow attenuation, causing the same area to continuously bear the dust load while other areas are underutilized. This results in insufficient utilization of the entire filter cartridge. Furthermore, dust easily accumulates on the outer surface of the filter paper, affecting the filtration effect and shortening the cleaning cycle. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a gradient multilayer composite structure air filter.

[0005] The objective of this utility model is achieved through the following technical solution: a gradient multi-layer composite air filter element, comprising a base plate, a rotating assembly rotatably mounted on the top of the base plate, a filter assembly for multi-layer gradient filtration being plugged into the outside of the rotating assembly, a plurality of support rods fixedly mounted on the top of the base plate, the plurality of support rods being evenly distributed on the outside of the filter assembly, a brush being fixedly mounted on the side of each of the support rods near the filter assembly, a fixing assembly being mounted on the top of the plurality of support rods, and a transmission assembly for driving the rotating assembly to rotate by airflow being rotatably mounted on the bottom of the fixing assembly.

[0006] Preferably, the rotating assembly includes a lower rotating ring rotatably mounted on the top of the base plate, a support net is fixedly provided on the top of the lower rotating ring, a limit ring is slidably mounted on the top of the support net, a plurality of positioning blocks are evenly provided on the limit ring, and a first positioning groove is provided at the position corresponding to the plurality of positioning blocks on the top of the support net.

[0007] Preferably, the fixing assembly includes a fixing ring located on the top of a plurality of support rods, the fixing ring having a connecting bolt at a position corresponding to the support rod, the connecting bolt being threaded to the support rod, and a sealing ring being fixedly provided on the top of the fixing ring.

[0008] Preferably, the transmission assembly includes an upper rotating ring rotatably mounted on the bottom of the fixed ring, and the upper rotating ring has a second positioning groove at a position corresponding to a plurality of positioning blocks, and an impeller is fixedly installed inside the upper rotating ring.

[0009] Preferably, the filter assembly includes a fine filter layer that is pluggably installed outside the support mesh, a medium filter layer that is fixedly disposed outside the fine filter layer, and a coarse filter layer that is fixedly disposed outside the medium filter layer.

[0010] Preferably, the fine filter layer is made of nanofiber material, the medium filter layer is made of meltblown fabric material, and the coarse filter layer is made of non-woven fabric material.

[0011] Beneficial effects:

[0012] This gradient multi-layer composite air filter element, through the setting of a rotating component, a transmission component, and a brush, works by using a filtering airflow to drive the transmission component to rotate the filter layer outside the rotating component, thereby continuously changing its windward surface and making its circumference evenly contact the filtering airflow, improving the utilization rate of the filter layer and the uniformity of load distribution. At the same time, the brush continuously scrapes the filter layer during its rotation, and with the help of centrifugal force, it removes surface dust particles, extending the cleaning cycle and eliminating the need for frequent cleaning. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A magnified schematic diagram of the local structure at point A;

[0016] Figure 3 This utility model Figure 1 A magnified view of the structure at point B in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the filter assembly of this utility model;

[0018] Figure 5 This is a schematic diagram of the rotating assembly of this utility model;

[0019] Figure 6 This is a schematic diagram of the transmission component of this utility model.

[0020] In the diagram: 1. Base plate; 2. Support rod; 3. Brush; 4. Fixing assembly; 401. Fixing ring; 402. Sealing ring; 403. Connecting bolt; 5. Rotating assembly; 501. Lower rotating ring; 502. Support mesh; 503. Limiting ring; 504. Positioning block; 505. First positioning groove; 6. Filter assembly; 601. Fine filter layer; 602. Medium filter layer; 603. Coarse filter layer; 7. Transmission assembly; 701. Upper rotating ring; 702. Second positioning groove; 703. Impeller. Detailed Implementation

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0023] like Figures 1 to 6As shown, a gradient multi-layer composite air filter element includes a base plate 1. A rotating assembly 5 is rotatably mounted on the top of the base plate 1. A filter assembly 6 for multi-layer gradient filtration is plugged into the outside of the rotating assembly 5. Four support rods 2 are fixedly mounted on the top of the base plate 1, and the four support rods 2 are evenly distributed on the outside of the filter assembly 6. A brush 3 is fixedly mounted on the side of each of the four support rods 2 near the filter assembly 6. A fixing assembly 4 is mounted on the top of the four support rods 2, and a transmission assembly 7 for driving the rotating assembly 5 to rotate by airflow is rotatably mounted on the bottom of the fixing assembly 4. This air filter element is installed in the filter assembly... Inside the filter compartment, during use, the filtered airflow enters the rotating component 5 after passing through the multi-layer gradient filtration of the filter component 6 from the outside, and flows upward along its interior, blowing the transmission component 7 to rotate under the support of the fixed component 4. This, in turn, drives the filter component 6 to rotate under the support of the base plate 1 through the rotating component 5, continuously changing the windward surface of the filter component 6, improving the utilization rate of the filter layer and the uniformity of load distribution. At the same time, during the rotation of the filter component 6, it scrapes against the brush 3, thereby peeling off the dust particles on the surface of the filter component 6, reducing the dust accumulation on its surface, extending the cleaning cycle, and eliminating the need for frequent cleaning.

[0024] like Figure 1 and Figure 2 As shown, the fixing assembly 4 includes a fixing ring 401 that is pluggably installed on the top of the four support rods 2. The fixing ring 401 is provided with connecting bolts 403 at positions corresponding to the support rods 2. The connecting bolts 403 are threadedly connected to the support rods 2. A sealing ring 402 is fixedly provided on the top of the fixing ring 401. By unscrewing the four connecting bolts 403, the upper rotating ring 701 is lifted upward through the fixing ring 401, thereby removing the obstruction to the top of the rotating assembly 5, so that the filter assembly 6 can be removed from the rotating assembly 5 for easy cleaning or replacement. The sealing ring 402 is used to achieve a sealed connection between the air filter element and the filter equipment.

[0025] like Figures 1 to 5As shown, the rotating assembly 5 includes a lower rotating ring 501 rotatably mounted on the top of the base plate 1. A support net 502 is fixedly mounted on the top of the lower rotating ring 501. A limiting ring 503 is slidably mounted on the top of the support net 502. Four positioning blocks 504 are evenly arranged on the limiting ring 503. A first positioning groove 505 is opened at the position corresponding to the four positioning blocks 504 on the top of the support net 502. The support net 502 supports the filter assembly 6 sleeved on its outside from the inside. The limiting ring 503 presses the top of the filter assembly 6 to fix it to the outside of the support net 502. During use, the transmission assembly 7 is driven by the filtered airflow to drive the support net 502 to rotate through the positioning blocks 504, thereby driving the filter assembly 6 to rotate, continuously changing its windward surface, improving the utilization rate of the filter layer and the uniformity of load distribution. At the same time, the filter assembly 6 scrapes against the brush 3 during rotation, thereby peeling off the dust particles on the surface of the filter assembly 6, reducing the dust accumulation on its surface, extending the cleaning cycle, and eliminating the need for frequent cleaning.

[0026] like Figure 3 and Figure 4 As shown, the filter assembly 6 includes a fine filter layer 601 that is pluggably installed on the outside of the support net 502. A medium filter layer 602 is fixedly provided on the outside of the fine filter layer 601, and a coarse filter layer 603 is fixedly provided on the outside of the medium filter layer 602. The fine filter layer 601 is made of nanofiber material, the medium filter layer 602 is made of meltblown cloth material, and the coarse filter layer 603 is made of non-woven fabric material. In use, the filtered airflow passes through the coarse filter layer 603 to filter out large particles such as dust and hair, then passes through the medium filter layer 602 to filter out small particles such as pollen and mold spores, and finally passes through the fine filter layer 601 to filter out tiny particles such as PM2.5, viruses, and bacteria, thus achieving three-layer gradient filtration.

[0027] like Figure 2 and Figure 6 As shown, the transmission assembly 7 includes an upper rotating ring 701 rotatably mounted on the bottom of the fixed ring 401. The upper rotating ring 701 and the four positioning blocks 504 are each provided with a second positioning groove 702. An impeller 703 is fixedly installed inside the upper rotating ring 701. When the airflow passes upward through the interior of the upper rotating ring 701, it will blow the impeller 703 and drive the upper rotating ring 701 to rotate. The upper rotating ring 701 then drives the coarse filter layer 603 outside the support net 502 to rotate synchronously through the upper positioning groove and the positioning blocks 504. The coarse filter layer 603 can be driven to rotate without additional power.

[0028] The work process is as follows:

[0029] S1: As Figure 1 As shown, install this air filter element in the filter compartment of the filtration equipment and align the retaining ring 401 with the air intake end;

[0030] S2: As Figure 1As shown, when the filtration equipment is working, the filtered airflow is drawn into the filter chamber from the outside, passes through the three-layer gradient filtration of the coarse filter layer 603, the medium filter layer 602 and the fine filter layer 601 in sequence, and then enters the interior of the support mesh 502 and flows upward along its interior.

[0031] S3: As Figures 1 to 3 As shown, at this time, the upward filtered airflow will blow the impeller 703 to drive the upper rotating ring 701 to rotate, so that the upper rotating ring 701 drives the support net 502 to rotate under the support of the lower rotating ring 501 through the positioning groove and positioning block 504.

[0032] S4: As Figures 1 to 4 As shown, when the support net 502 rotates, it will drive the external filter component 6 to rotate, thereby continuously changing its windward surface, so that its circumferential surface is evenly in contact with the filtered airflow, improving the filter layer utilization rate and load distribution uniformity.

[0033] S5: As Figure 1 As shown, during the rotation of the coarse filter layer 603, it will scrape against the brush 3, thereby removing dust particles from the surface of the coarse filter layer 603, reducing the dust accumulation on its surface, extending the cleaning cycle, and eliminating the need for frequent cleaning.

[0034] S6: As Figure 1 and Figure 2 As shown, after prolonged use, the air filter element can be removed from the filter compartment. Unscrew the four connecting bolts 403 to release the fixing ring 401 from the support rod 2. Then, lift the upper rotating ring 701 upwards through the fixing ring 401. Next, remove the limiting ring 503 to release the limiting of the filter assembly 6, thereby allowing it to be removed from the outside of the support mesh 502 for easy cleaning or replacement.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A gradient multilayer composite structure air filter cartridge characterized by: The utility model provides a multi-layer gradient filter, including bottom plate (1), the top of bottom plate (1) rotatory installation has rotary unit (5), the outside of rotary unit (5) plug -in installation has the filter assembly (6) for multilayer gradient filtration, the top of bottom plate (1) is equipped with a plurality of support poles (2) fixedly, a plurality of support poles (2) are evenly distributed in the outside of filter assembly (6), a plurality of support poles (2) are close to the side of filter assembly (6) and are equipped with brush (3) fixedly, the top of a plurality of support poles (2) is installed with one fixed assembly (4), the bottom of fixed assembly (4) rotatory installation has transmission assembly (7) for driving rotary unit (5) rotation through air flow.

2. A gradient multilayer composite structure air filter cartridge according to claim 1 wherein: The rotary unit (5) includes a lower rotary ring (501) rotatably mounted on the top of the bottom plate (1), a support net (502) fixedly arranged on the top of the lower rotary ring (501), a limiting ring (503) slidably mounted on the top of the support net (502), a plurality of positioning blocks (504) evenly arranged on the limiting ring (503), and a first positioning groove (505) corresponding to each of the plurality of positioning blocks (504) formed on the top of the support net (502).

3. A gradient multilayer composite structure air filter cartridge according to claim 2 characterized in that: The fixed assembly (4) includes a fixed ring (401) plug-in mounted on the top of the plurality of support poles (2), a connecting bolt (403) arranged on the fixed ring (401) corresponding to the support pole (2), the connecting bolt (403) threadedly connected with the support pole (2), and a sealing ring (402) fixedly arranged on the top of the fixed ring (401).

4. A gradient multilayer composite structure air filter cartridge according to claim 3 characterized in that: The transmission assembly (7) includes an upper rotary ring (701) rotatably mounted on the bottom of the fixed ring (401), a second positioning groove (702) corresponding to each of the plurality of positioning blocks (504) formed on the upper rotary ring (701), and an impeller (703) fixedly arranged in the upper rotary ring (701).

5. A gradient multilayer composite structure air filter cartridge according to claim 2 characterized in that: The filter assembly (6) includes a fine filter layer (601) plug-in mounted on the outside of the support net (502), a medium filter layer (602) fixedly arranged on the outside of the fine filter layer (601), and a coarse filter layer (603) fixedly arranged on the outside of the medium filter layer (602).

6. A gradient multilayer composite structure air filter cartridge according to claim 5 wherein: The fine filter layer (601) is made of nanofiber material, the medium filter layer (602) is made of melt-blown cloth material, and the coarse filter layer (603) is made of non-woven fabric material.

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