Polytetrafluoroethylene microporous membrane composite filter screen for air purification

Abstract

The utility model discloses a polytetrafluoroethylene microporous membrane composite filter screen for air purification, which comprises a support layer, a polytetrafluoroethylene microporous membrane layer, a sound absorption layer, an adsorption layer and a fiber mesh layer which are sequentially arranged, the adsorption layer is of a back-and-forth folding structure, and the surface of the adsorption layer is coated with a nano activated carbon layer; a positioning frame extending upwards is arranged on the side portion of the supporting layer, the inner side face of the positioning frame is provided with positioning grooves for installation of the polytetrafluoroethylene microporous membrane layer, the sound absorption layer, the adsorption layer and the fiber net layer, and an elastic damping layer is arranged between the upper surface of the fiber net layer and the positioning frame. The utility model has the characteristics of good installation stability, convenient disassembly and cleaning, and noise reduction.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter screen for air purification, in particular to a polytetrafluoroethylene microporous membrane composite filter screen for air purification. BACKGROUND

[0002] With the continuous development of industrial technology, the environmental problems caused by industrial technology are increasingly serious. In order to improve the air quality in the living environment, the existing technology designs a device capable of purifying air. The air purification device is driven by a centrifugal fan to continuously suck the air near the air purification device into its interior, and then filters, disinfects and purifies the sucked air through the air filter screen assembly arranged in the interior of the air purification device, so as to obtain clean air.

[0003] The air filter screen assembly commonly used in the existing air purification device is restricted by the filtering effect of the filter screen assembly, so as to ensure a high air purification effect. Therefore, a plurality of fixed filter structures are usually arranged, but the filter screen with a multi-layer structure is easy to be blocked by impurities, and needs to be stopped for cleaning. The disassembly and cleaning between the layers of filter structures are not very convenient. Moreover, when the air purification device is working, the fan will bring some noise and vibration, which will also affect the installation stability and filtering effect of the filter screen assembly. SUMMARY

[0004] The utility model discloses a polytetrafluoroethylene microporous membrane composite filter screen for air purification.

[0005] The utility model discloses a polytetrafluoroethylene microporous membrane composite filter screen for air purification, which has the characteristics of good installation stability, convenient disassembly and cleaning, and low noise.

[0006] In the aforementioned polytetrafluoroethylene microporous membrane composite filter screen for air purification, the periphery of the support layer, the polytetrafluoroethylene microporous membrane layer, the sound-absorbing layer, the adsorbing layer and the fiber mesh layer is provided with a mounting frame.

[0007] In the aforementioned polytetrafluoroethylene microporous membrane composite filter screen for air purification, the upper surface of the mounting frame of the support layer is provided with an annular positioning groove, and the positioning groove is provided with a first magnetic strip. The lower surface of the mounting frame of the polytetrafluoroethylene microporous membrane layer is provided with a second magnetic strip that extends into the positioning groove and is attracted to the first magnetic strip.

[0008] In the polytetrafluoroethylene microporous membrane composite filter screen for air purification, the polytetrafluoroethylene microporous membrane layer comprises a non-woven fabric layer, one side of the non-woven fabric layer is provided with the polytetrafluoroethylene microporous membrane, and the other side of the non-woven fabric layer and the polytetrafluoroethylene microporous membrane is provided with a photocatalyst coating.

[0009] In the polytetrafluoroethylene microporous membrane composite filter screen for air purification, the sound-absorbing layer comprises sound-absorbing cotton sheets with a concave-convex structure on surfaces, and the sound-absorbing cotton sheets are uniformly provided with air-permeable holes.

[0010] Compared with the prior art, the polytetrafluoroethylene microporous membrane composite filter screen for air purification has the following beneficial effects:

[0011] The supporting layer cooperates with the positioning frame to stabilize the entire composite filter screen structure, so that shaking and bumping damage are avoided; the polytetrafluoroethylene microporous membrane layer is arranged to perform fine filtration, improve filtration performance, and reduce filtration resistance; the sound-absorbing layer is arranged to reduce noise in air; the adsorbing layer is arranged to adsorb toxic and harmful gases, odors and the like in air, and the adsorbing layer has a folded structure, so that the adsorption area of the nano activated carbon layer to air is expanded, and the adsorption capacity and efficiency are improved; the fiber mesh layer blocks large particles and dust in air, protects the adsorbing layer from being blocked, and prolongs the service life of the composite filter screen.

[0012] Therefore, the polytetrafluoroethylene microporous membrane composite filter screen for air purification has the characteristics of good installation stability, convenient disassembly and cleaning, and noise reduction. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model.

[0014] Figure 2 is a structural schematic view of the supporting layer.

[0015] Figure 3 is a structural schematic view of the adsorbing layer.

[0016] Figure 4 is a structural schematic view of the polytetrafluoroethylene microporous membrane layer.

[0017] Figure 5 is a structural schematic view of the sound-absorbing layer.

[0018] The marks in the drawings are: 1, support layer; 11, positioning groove; 2, polytetrafluoroethylene microporous membrane layer; 21, non-woven fabric layer; 22, polytetrafluoroethylene microporous membrane; 23, photocatalyst coating; 3, sound absorption layer; 31, sound absorption cotton sheet; 32, air hole; 4, adsorption layer; 5, fiber mesh layer; 6, positioning frame; 61, elastic damping layer; 7, mounting frame; 71, first magnetic strip; 72, second magnetic strip. DETAILED DESCRIPTION

[0019] The utility model will be further explained in connection with the drawings and examples, but not as the basis for the utility model limit.

[0020] In the description of the utility model, it also needs to be explained that, unless there is explicit provision and limitation, the terms "set", "mount", "connect", "connect" should be broad understanding, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Example:

[0022] As Figures 1-5 The air purification polytetrafluoroethylene microporous membrane composite filter screen shown in the drawing, including the support layer 1, polytetrafluoroethylene microporous membrane layer 2, sound absorption layer 3, adsorption layer 4 and fiber mesh layer 5 arranged in turn, adsorption layer 4 presents back and forth folding structure, the surface of adsorption layer 4 is coated with nano activated carbon layer;The side of the support layer 1 is provided with the positioning frame 6 extending upwards, the inner side of the positioning frame 6 is provided with the positioning groove 11 for polytetrafluoroethylene microporous membrane layer 2, sound absorption layer 3, adsorption layer 4 and fiber mesh layer 5 installation, the upper surface of fiber mesh layer 5 and positioning frame 6 are equipped with elastic damping layer 61 between.The support layer 1 of setting cooperates positioning frame 6 to stabilize the whole composite filter screen structure, avoid wobble and knock damage;The polytetrafluoroethylene microporous membrane layer 2 of setting carries out fine filtration, improves the filtration performance, reduces the filtration resistance;The sound absorption layer 3 for reducing the noise in air is set, the adsorption layer 4 for adsorbing toxic and harmful gases, peculiar smell etc. in air is set, and the adsorption layer 4 presents folding structure, expands the adsorption area of nano activated carbon layer to air, improves the adsorption capacity and efficiency;The large particle and dust in air are blocked through fiber mesh layer 5, protect adsorption layer 4 from being blocked, prolong the service life of composite filter screen.Positioning frame 6 is further provided with elastic damping layer 61 in, not only further plays the role of stabilizing structure, also makes the support layer 1, polytetrafluoroethylene microporous membrane layer 2, sound absorption layer 3, adsorption layer 4 and fiber mesh layer 5 connection closely, reduces the leakage and vibration condition.

[0023] The periphery of the support layer 1, the polytetrafluoroethylene microporous membrane layer 2, the sound absorption layer 3, the adsorption layer 4 and the fiber mesh layer 5 is provided with a mounting frame 7. The mounting frame 7 is arranged so that the support layer 1, the polytetrafluoroethylene microporous membrane layer 2, the sound absorption layer 3, the adsorption layer 4 and the fiber mesh layer 5 are convenient to install and are in a taut state, thereby ensuring the filtering effect of air purification.

[0024] The upper surface of the mounting frame 7 of the support layer 1 is provided with an annular positioning groove 11, the positioning groove 11 is provided with a first magnetic strip 71, and the lower surface of the mounting frame 7 of the polytetrafluoroethylene microporous membrane layer 2 is provided with a second magnetic strip 72 which is attracted to the first magnetic strip 71 and extends into the positioning groove 11. The polytetrafluoroethylene microporous membrane layer 2 is fixed on the support layer 1 by the adsorption effect of the first magnetic strip 71 and the second magnetic strip 72, is convenient to disassemble and assemble, is convenient to clean and replace in the later period, and can be cleaned and reused repeatedly.

[0025] The polytetrafluoroethylene microporous membrane layer 2 comprises a non-woven fabric layer 21, one side of the non-woven fabric layer 21 is provided with a polytetrafluoroethylene microporous membrane 22, and the other side of the non-woven fabric layer 21 and the polytetrafluoroethylene microporous membrane 22 is provided with a photocatalyst coating 23. The polytetrafluoroethylene microporous membrane 22 and the non-woven fabric layer 21 are combined, the use performance of the polytetrafluoroethylene microporous membrane layer 2 is improved, and the photocatalyst coating 23 is arranged in multiple layers, and the air purification effect is improved.

[0026] The sound absorption layer 3 comprises sound absorption cotton sheets 31 which have a concave-convex structure, and the sound absorption cotton sheets 31 are uniformly provided with air permeable holes 32. The sound absorption cotton sheets 31 which have a concave-convex structure are arranged in cooperation with the air permeable holes 32, so that the sound wave energy value can be increased, the sound wave reflection path is increased, and thus the noise can be better reduced.

[0027] The parts not described in detail in the utility model are prior art, and thus are not specifically described herein.

Claims

1. A polytetrafluoroethylene microporous membrane composite filter for air purification, characterized by: The sound absorption layer (4) is in a back-and-forth folding structure, and the surface of the sound absorption layer (4) is coated with a nano activated carbon layer; the side of the support layer (1) is provided with an upwardly extending positioning frame (6), the inner side of the positioning frame (6) is provided with a positioning groove (11) for mounting the polytetrafluoroethylene microporous membrane layer (2), the sound absorption layer (3), the sound absorption layer (4) and the fiber mesh layer (5), and an elastic shock absorbing layer (61) is arranged between the upper surface of the fiber mesh layer (5) and the positioning frame (6).

2. The PTFE microporous membrane composite filter screen for air purification according to claim 1, characterized in that: The periphery of the support layer (1), the polytetrafluoroethylene microporous membrane layer (2), the sound absorption layer (3), the sound absorption layer (4) and the fiber mesh layer (5) is provided with a mounting frame (7).

3. The PTFE microporous membrane composite filter screen for air purification according to claim 2, characterized in that: The upper surface of the mounting frame (7) of the support layer (1) is provided with an annular positioning groove (11), the positioning groove (11) is provided with a first magnetic strip (71), and the lower surface of the mounting frame (7) of the polytetrafluoroethylene microporous membrane layer (2) is provided with a second magnetic strip (72) extending into the positioning groove (11) and attracted to the first magnetic strip (71).

4. The PTFE microporous membrane composite filter screen for air purification according to claim 1, characterized in that: The polytetrafluoroethylene microporous membrane layer (2) comprises a non-woven fabric layer (21), one side of the non-woven fabric layer (21) is provided with a polytetrafluoroethylene microporous membrane (22), and the other side of the non-woven fabric layer (21) and the polytetrafluoroethylene microporous membrane (22) is provided with a photocatalytic coating (23).

5. The PTFE microporous membrane composite filter screen for air purification according to claim 1, characterized in that: The sound absorption layer (3) comprises sound absorption cotton sheets (31) with a concave-convex structure on the surface, and the sound absorption cotton sheets (31) are uniformly provided with air permeable holes (32).

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