Replaceable composite filter screen

Abstract

The utility model discloses a replaceable composite filter screen which comprises a paper frame provided with an installation cavity, a honeycomb interlayer and a composite filter element layer are laid in the installation cavity, the honeycomb interlayer is laid at the bottom of the installation cavity, the composite filter element layer is laid on the honeycomb interlayer, the section of the composite filter element layer is in a wave shape, and hard foam is wrapped outside the paper frame. An annular frame assembly is attached between the inner wall of the mounting cavity and the outer wall of the composite filter element layer, the bottom of the annular frame assembly is in supporting fit with the honeycomb interlayer, a filter screen plate is arranged on the annular frame assembly, and a handle is arranged at the end, away from the filter screen plate, of the filter screen plate. The effects of improving the filtering performance through multi-stage filtering and conveniently replacing the filter element, the filter screen and the honeycomb interlayer are achieved.

Description

Technical Field

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

[0002] A Chinese patent with publication number CN222586027U discloses an activated carbon filter for vehicle air purification. The activated carbon filter includes a main body and through holes. The through holes are located inside the main body and are arranged in an array. The through holes are straight through holes. The main body is made of activated carbon material, and the activated carbon filter is integrally formed.

[0003] However, the activated carbon filter cartridge mentioned above has the following drawbacks: the main body of the filter cartridge is made of activated carbon material in one piece, which cannot achieve multi-stage filtration and the filtration effect is not good enough, so it needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a replaceable composite filter screen that features multi-stage filtration to improve filtration performance and allows for easy replacement of the filter element, filter screen, and honeycomb interlayer.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a replaceable composite filter screen, comprising a paper frame with an installation cavity, wherein a honeycomb interlayer and a composite filter element layer are laid inside the installation cavity, the honeycomb interlayer is laid at the bottom of the installation cavity, the composite filter element layer is laid on the honeycomb interlayer, the cross-section of the composite filter element layer is wavy, the paper frame is wrapped with rigid foam, an annular frame assembly is attached between the inner wall of the installation cavity and the outer wall of the composite filter element layer, the bottom of the annular frame assembly is supported and engaged with the honeycomb interlayer, a filter screen plate is provided on the annular frame assembly, and a handle is provided at the end of the filter screen plate away from the filter screen plate.

[0006] By adopting the above technical solution, users can easily and quickly pull out the composite filter from the installation position of the air purification equipment using the handle. The airflow needs to be initially filtered by the filter screen plate, and then filtered multiple times by the composite filter element layer and the honeycomb interlayer to obtain clean air. Moreover, the filter screen plate, composite filter element layer and honeycomb interlayer of this utility model can be easily removed from the installation cavity of the paper frame for replacement. It has the effects of multi-stage filtration to improve filtration performance and easy replacement of filter element, filter screen and honeycomb interlayer.

[0007] A further feature of this invention is that the honeycomb interlayer includes a honeycomb panel and honeycomb mesh fabric attached to the upper and lower ends of the honeycomb panel, wherein the honeycomb panel is composed of a plastic honeycomb carrier and activated carbon particles.

[0008] By adopting the above technical solution, the honeycomb plate formed by composite activated carbon particles on both ends of the honeycomb carrier has good air permeability and good impurity adsorption effect. The honeycomb mesh on both sides can also further improve the dust isolation effect.

[0009] A further feature of this invention is that the annular frame assembly includes two short side strips and two long side strips, with the two short side strips arranged opposite each other in the width direction of the composite filter layer, and the two long side strips arranged opposite each other in the length direction of the composite filter.

[0010] By adopting the above technical solution, the annular frame assembly can position the composite filter element and reduce the shaking amplitude of the composite filter element in the installation cavity.

[0011] A further feature of this invention is that the filter plate includes a U-shaped bracket and a woven mesh portion disposed within the U-shaped bracket.

[0012] By adopting the above technical solutions, the U-shaped bracket can improve the structural strength of the filter plate and extend its service life.

[0013] A further feature of this invention is that the edge of the woven mesh portion is bonded to the annular frame assembly by an adhesive strip.

[0014] By adopting the above technical solution, the addition of the adhesive strip can improve the connection stability between the filter plate and the annular frame assembly.

[0015] A further feature of this invention is that a U-shaped iron strip is embedded on the side of the U-shaped bracket facing the annular frame assembly, and a U-shaped magnet is embedded on the surface of the rigid foam corresponding to the U-shaped iron strip, wherein the U-shaped magnet and the U-shaped iron strip are attracted to each other.

[0016] By adopting the above technical solution, the adsorption force between the U-shaped iron strip and the U-shaped magnet can be used to further improve the installation firmness between the filter plate and the ring frame assembly.

[0017] A further feature of this invention is that the rigid foam is provided with a plurality of rubber bands corresponding to the filter plate, and the plurality of rubber bands are symmetrically arranged on the rigid foam, the rubber bands being used to press the filter plate onto the composite filter element layer.

[0018] By adopting the above technical solution, the pressure applied by the rubber band to the composite filter element can improve the installation stability of the composite filter element in the installation cavity and improve the fit between the composite filter element and the filter screen.

[0019] A further feature of this invention is that the rigid foam is provided with a plurality of blocks corresponding to the filter plate, and the blocks cooperate with the rubber band to restrict the sliding of the filter plate relative to the rigid foam.

[0020] By adopting the above technical solution, the baffle can stop and limit the filter screen, thereby improving the installation stability of the filter screen.

[0021] A further feature of this invention is that: elastic support sheets are provided on both sides of the rigid foam, the elastic support sheets are arched, and the elastic support sheets include a support section in the middle and elastic deformation sections located on both sides of the support section and fixedly connected to the paper frame.

[0022] By adopting the above technical solution, when the present invention is installed in the installation position of the air purification equipment, the elastic deformation section of the elastic support plate on both sides undergoes elastic deformation and pushes the support section to support and position with the inner wall of the corresponding installation position, thereby improving the stability of the present invention in the installation position of the air purification equipment.

[0023] A further feature of this invention is that the handle is made of flexible fabric, and the outer surface of the handle is rough. The paper frame is provided with a hook surface corresponding to the handle, and the rough surface and the hook surface are adhered and engaged.

[0024] By adopting the above technical solution, the handle is bent so that the rough surface of the handle end adheres to the hook surface of the paper frame side wall, making it easy to store.

[0025] In summary, this utility model has the following beneficial effects:

[0026] The air purifier employs a honeycomb interlayer and a composite filter layer within the mounting cavity of a paper frame. The honeycomb interlayer is laid at the bottom of the mounting cavity, and the composite filter layer is laid on top of the honeycomb interlayer. The paper frame is wrapped with rigid foam. An annular frame assembly is attached between the inner wall of the mounting cavity and the outer wall of the composite filter layer. A filter screen is mounted on the annular frame assembly, and a handle is provided at one end of the filter screen. Users can easily and quickly pull out the composite filter from the mounting position of the air purifier using the handle. The airflow needs to undergo primary filtration through the filter screen, and then multiple filtrations through the composite filter layer and the honeycomb interlayer to obtain clean air. Furthermore, the filter screen, composite filter layer, and honeycomb interlayer of this invention can all be easily removed from the mounting cavity of the paper frame for replacement, achieving the effects of multi-stage filtration to improve filtration performance and convenient replacement of the filter element, filter screen, and honeycomb interlayer. Attached Figure Description

[0027] Figure 1 This is a structural diagram of a specific embodiment of the present invention.

[0028] Figure 2 This is a utility model Figure 1 A magnified view of a portion of region A in the middle.

[0029] Figure 3 This is a utility model Figure 1 A longitudinal sectional view.

[0030] Figure 4 This is a utility model Figure 3 A magnified view of a portion of region B in the middle.

[0031] Figure 5 This is a structural diagram of a specific embodiment two of this utility model.

[0032] Figure 6 This is a structural diagram of a specific embodiment two of this utility model; the filter plate is not shown.

[0033] Figure 7 This is a structural diagram of the filter plate in a specific embodiment of this utility model.

[0034] Figure 8 This is a partial view of a specific embodiment two of this utility model, showing the rough surface of the handle adhering to the hook surface of the paper frame.

[0035] Figure 9 This is a structural diagram of a specific embodiment three of this utility model.

[0036] In the diagram: 1. Paper frame; 10. Mounting cavity; 11. Hook surface; 2. Honeycomb interlayer; 21. Honeycomb panel; 22. Honeycomb mesh fabric; 3. Composite filter element layer; 4. Rigid foam; 41. U-shaped magnet; 42. Rubber band; 43. Stop block; 44. Elastic support sheet; 441. Support section; 442. Elastic deformation section; 5. Annular frame assembly; 51. Short side strip; 52. Long side strip; 6. Filter screen plate; 61. U-shaped bracket; 611. U-shaped iron strip; 62. Woven mesh section; 7. Adhesive strip; 8. Handle; 81. Textured surface. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings. Specific Implementation Example 1

[0039] A replaceable composite filter, such as Figures 1-4 As shown, the device includes a paper frame 1 with an installation cavity 10. A honeycomb interlayer 2 and a composite filter layer 3 are laid inside the installation cavity 10. The honeycomb interlayer 2 is laid at the bottom of the installation cavity 10, and the composite filter layer 3 is laid on the honeycomb interlayer 2. The cross-section of the composite filter layer 3 is wavy. The paper frame 1 is wrapped with rigid foam 4. An annular frame assembly 5 is attached between the inner wall of the installation cavity 10 and the outer wall of the composite filter layer 3. The bottom of the annular frame assembly 5 is supported and engaged with the honeycomb interlayer 2. A filter screen plate 6 is provided on the annular frame assembly 5, and a handle 8 is provided at the end of the filter screen plate 6 away from the filter screen plate 6.

[0040] like Figures 2-4As shown, the honeycomb interlayer 2 includes a honeycomb panel 21 and honeycomb mesh fabric 22 attached to the upper and lower end faces of the honeycomb panel 21. The honeycomb panel 21 is composed of a plastic honeycomb carrier and activated carbon particles. The honeycomb panel 21 formed by using activated carbon particles on both end faces of the honeycomb carrier has good air permeability and good impurity adsorption effect. The honeycomb mesh fabric 22 on both sides can further improve the dust isolation effect. The annular frame assembly 5 includes two short side strips 51 and two long side strips 52. The two short side strips 51 are arranged opposite each other in the width direction of the composite filter layer 3. The long strip 52 is positioned relative to the length of the composite filter element. The annular frame assembly 5 can position the composite filter element and reduce the shaking amplitude of the composite filter element in the mounting cavity 10. The filter screen plate 6 includes a U-shaped bracket 61 and a mesh part 62 disposed in the U-shaped bracket 61. The U-shaped bracket 61 can improve the structural strength of the filter screen plate 6 and extend the service life of the filter screen plate 6. The edge of the mesh part 62 is bonded to the annular frame assembly 5 by an adhesive strip 7. The addition of the adhesive strip 7 can improve the connection stability between the filter screen plate 6 and the annular frame assembly 5.

[0041] The basic working principle of this utility model is as follows: A honeycomb interlayer 2 and a composite filter layer 3 are provided in the mounting cavity 10 of the paper frame 1. The honeycomb interlayer 2 is laid at the bottom of the mounting cavity 10, and the composite filter layer 3 is laid on the honeycomb interlayer 2. The paper frame 1 is wrapped with rigid foam 4. An annular frame assembly 5 is attached between the inner wall of the mounting cavity 10 and the outer wall of the composite filter layer 3. A filter screen plate 6 is provided on the annular frame assembly 5. A handle 8 is provided at one end of the filter screen plate 6. The user can use the handle 8 to quickly pull out the composite filter screen from the installation position of the air purification equipment. The airflow needs to be filtered through the filter screen plate 6 for primary filtration, and then through the composite filter layer 3 and the honeycomb interlayer 2 for multiple filtration to obtain clean air. Moreover, the filter screen plate 6, the composite filter layer 3 and the honeycomb interlayer 2 of this utility model can be easily removed from the mounting cavity 10 of the paper frame 1 for replacement. It has the effects of multi-stage filtration to improve filtration performance and easy replacement of filter elements, filter screens and honeycomb interlayers. Specific Implementation Example 2

[0043] A replaceable composite filter, such as Figures 5-8As shown, the difference between this embodiment and specific embodiment one is that: a U-shaped iron strip 611 is embedded on the side of the U-shaped bracket 61 facing the annular frame assembly 5, and a U-shaped magnet 41 is embedded on the surface of the rigid foam 4 corresponding to the U-shaped iron strip 611. The U-shaped magnet 41 and the U-shaped iron strip 611 are attracted to each other. The attraction force between the U-shaped iron strip 611 and the U-shaped magnet 41 can further improve the installation firmness between the filter plate 6 and the annular frame assembly 5; the rigid foam 4 is provided with several rubber bands 42 corresponding to the filter plate 6. The rubber bands 42 are symmetrically arranged on the rigid foam 4. The rubber bands 42 are used to press the filter plate 6 onto the composite filter element layer 3, and the rubber bands 42 are used to press the composite filter element layer 3. The pressing pressure of the core can improve the installation stability of the composite filter element in the installation cavity 10 and improve the fit between the composite filter element and the filter screen plate 6. The rigid foam 4 is provided with several blocks 43 corresponding to the filter screen plate 6. The blocks 43 cooperate with the rubber band 42 to limit the slippage of the filter screen plate 6 relative to the rigid foam 4. The blocks 43 can stop and limit the filter screen plate 6, improving the installation stability of the filter screen plate 6. The handle 8 is made of flexible fabric, and the outer surface of the handle 8 is a rough surface 81. The paper frame 1 is provided with a hook surface 11 corresponding to the handle 8. The rough surface 81 and the hook surface 11 are adhered and cooperated. After the handle 8 is bent, the rough surface 81 at the end of the handle 8 adheres to the hook surface 11 on the side wall of the paper frame 1, which is convenient for storage.

[0044] The other structures of this embodiment are the same as those of Specific Embodiment 1, and will not be described again here. Specific Implementation Example 3

[0046] A replaceable composite filter, such as Figure 9 As shown, the difference between this embodiment and specific embodiment two is that: the rigid foam 4 is provided with elastic support pieces 44 on both sides. The elastic support pieces 44 are arched and include a support section 441 in the middle and elastic deformation sections 442 located on both sides of the support section 441 and fixedly connected to the paper frame 1. When this utility model is installed in the installation position of the air purification equipment, the elastic deformation sections 442 of the elastic support pieces 44 on both sides undergo elastic deformation and push the support section 441 to support and position with the inner wall of the corresponding installation position, thereby improving the stability of this utility model in the installation position of the air purification equipment.

[0047] The other structures of this embodiment are the same as those of specific embodiment two, and will not be described again here.

[0048] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A replaceable composite filter screen, comprising a paper frame (1) with an installation cavity (10), characterized in that: The mounting cavity (10) is filled with a honeycomb interlayer (2) and a composite filter layer (3). The honeycomb interlayer (2) is laid at the bottom of the mounting cavity (10), and the composite filter layer (3) is laid on the honeycomb interlayer (2). The cross-section of the composite filter layer (3) is wavy. The paper frame (1) is wrapped with rigid foam (4). An annular frame assembly (5) is attached between the inner wall of the mounting cavity (10) and the outer wall of the composite filter layer (3). The bottom of the annular frame assembly (5) is supported and cooperated with the honeycomb interlayer (2). A filter screen plate (6) is provided on the annular frame assembly (5), and a handle (8) is provided at the end of the filter screen plate (6) away from the filter screen plate (6).

2. The replaceable composite filter screen according to claim 1, characterized in that: The honeycomb interlayer (2) includes a honeycomb plate (21) and a honeycomb mesh (22) attached to the upper and lower ends of the honeycomb plate (21). The honeycomb plate (21) is composed of a plastic honeycomb carrier and activated carbon particles.

3. The replaceable composite filter screen according to claim 1, characterized in that: The annular frame assembly (5) includes two short side strips (51) and two long side strips (52). The two short side strips (51) are arranged opposite each other in the width direction of the composite filter layer (3), and the two long side strips (52) are arranged opposite each other in the length direction of the composite filter.

4. A replaceable composite filter screen according to claim 1, characterized in that: The filter plate (6) includes a U-shaped bracket (61) and a mesh section (62) disposed within the U-shaped bracket (61).

5. A replaceable composite filter screen according to claim 4, characterized in that: The edge of the woven mesh section (62) is bonded to the annular frame assembly (5) by an adhesive strip (7).

6. A replaceable composite filter screen according to claim 4, characterized in that: The U-shaped bracket (61) has a U-shaped iron strip (611) embedded on one side facing the annular frame assembly (5), and a U-shaped magnet (41) is embedded on the surface of the rigid foam (4) corresponding to the U-shaped iron strip (611). The U-shaped magnet (41) and the U-shaped iron strip (611) are attracted to each other.

7. A replaceable composite filter screen according to claim 1, characterized in that: The rigid foam (4) is provided with a plurality of rubber bands (42) corresponding to the filter plate (6). The plurality of rubber bands (42) are symmetrically arranged on the rigid foam (4). The rubber bands (42) are used to press the filter plate (6) onto the composite filter layer (3).

8. A replaceable composite filter screen according to claim 7, characterized in that: The rigid foam (4) is provided with a plurality of blocks (43) corresponding to the filter plate (6). The blocks (43) cooperate with the rubber band (42) to restrict the sliding of the filter plate (6) relative to the rigid foam (4).

9. A replaceable composite filter screen according to claim 1, characterized in that: The rigid foam (4) has elastic support pieces (44) on both sides. The elastic support pieces (44) are arched in shape. The elastic support pieces (44) include a support section (441) in the middle and elastic deformation sections (442) located on both sides of the support section (441) and fixedly connected to the paper frame (1).

10. A replaceable composite filter screen according to claim 1, characterized in that: The handle (8) is made of flexible fabric, and the outer surface of the handle (8) is a rough surface (81). The paper frame (1) is provided with a hook surface (11) corresponding to the handle (8), and the rough surface (81) and the hook surface (11) are adhered and cooperated.

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