A renewable VOC-removing chemical filter

Abstract

The utility model discloses a renewable VOC chemical filter of removing, including outer frame and set up in the filter core of outer frame, and the filter core includes the card comb assembly, activated carbon carbon cloth layer and support net that fixed connection in turn stack, and activated carbon carbon cloth layer surface presents the even reverse folding shape, and the support net is bonded fixed in activated carbon carbon cloth layer one side, and carries out the coverage to activated carbon carbon cloth layer surface, and the card comb assembly is by a plurality of card combs, and a plurality of card combs are along the crease direction of filter core and set up equidistance, and the card comb is used for fixed activated carbon carbon cloth layer's fold interval, the utility model discloses a card comb is equipped in the air inlet face, guarantees each fold activated carbon carbon cloth layer gap uniformity, makes hot air current even pass through the filter section, avoids the local wind speed uneven and causes the regenerative temperature uneven, solves the problem of the poor regeneration effect, improves the overall regeneration efficiency and life. The air outlet face support net can bind the filter material, prevents the deformation of activated carbon carbon cloth layer under high temperature, maintains the fold type integrity, and gives consideration to the filter core structural stability, filtration efficiency, life and renewability.

Description

Technical Field

[0001] This utility model relates to the field of air purification, specifically a regenerable VOC removal chemical filter. Background Technology

[0002] Currently, activated carbon-based chemical filters are the mainstream method for controlling AMCs (airborne molecular pollutants) in the industry. The principle is to utilize the large surface area and unique pore structure of activated carbon to capture VOCs (volatile organic compounds) through physical adsorption. However, once the filter is saturated, it loses its filtering efficiency and cannot be used further. Due to the special properties of activated carbon, used filters are considered hazardous waste and require special treatment. This not only increases operating costs but also pollutes the environment. Therefore, utilizing the regenerable properties of activated carbon substrates through heating, overcoming the limitation of single-use filters, is of great significance for reducing costs and waste emissions in the microelectronics industry.

[0003] Existing methods for regenerating saturated activated carbon are mainly divided into biological, chemical, and physical methods. Among these, the research and development of physical methods are quite mature, and the thermal regeneration technology for granular activated carbon has been fully industrialized. In the regeneration of pleated filters, activated carbon or polymer adsorbents are typically encapsulated with heat-resistant fibers and adhesives within a non-woven fabric layer, with single- or double-sided support grids to prevent deformation. Regeneration is then achieved through a hot airflow, resulting in low pressure drop and high-efficiency filtration. However, the pleated structure suffers from uneven pleat spacing, leading to heat accumulation in the filter cloth during regeneration, uneven heating, and insufficient desorption of pollutants, thus affecting the pressure drop after regeneration and the filter's service life. Utility Model Content

[0004] The purpose of this invention is to provide a regenerable VOC removal chemical filter to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a regenerable VOC removal chemical filter, including an outer frame and a filter element disposed within the outer frame. The filter element includes a comb assembly, an activated carbon cloth layer, and a support mesh that are stacked and fixedly connected in sequence. The surface of the activated carbon cloth layer is uniformly folded in reverse. The support mesh is bonded and fixed to one side of the activated carbon cloth layer and covers the surface of the activated carbon cloth layer. The comb assembly is composed of multiple combs, which are equally spaced along the fold direction of the filter element. The combs are used to fix the fold spacing of the activated carbon cloth layer.

[0006] Furthermore, the card comb assembly and the support mesh are respectively disposed on the air inlet and air outlet surfaces of the activated carbon cloth layer.

[0007] Furthermore, the support mesh is a diamond mesh structure.

[0008] Furthermore, the comb includes a comb handle and a plurality of comb teeth that are uniformly and integrally disposed on the comb handle. The number of comb teeth is equal to the number of folds in the corresponding activated carbon cloth layer. The plurality of comb teeth are evenly inserted into the folds in the corresponding side of the activated carbon cloth layer. The comb handle and comb teeth are fixed to the surface of the activated carbon cloth layer by hot melt adhesive.

[0009] Furthermore, the length of the comb teeth is equal to the fold depth of the activated carbon cloth layer, and the outer walls on both sides of the comb teeth are inclined inward from the comb handle to the end of the comb teeth.

[0010] Furthermore, the outer periphery of the filter element is fixed to the inner wall of the outer frame using sealant.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] The air inlet surface is equipped with a comb to ensure that the gaps between each fold of activated carbon cloth are consistent, allowing hot airflow to pass evenly through the entire filter cross-section. This avoids localized excessively high or low airflow velocities, which can lead to uneven regeneration heating temperatures and thus solve the problem of poor regeneration effect, improving overall regeneration efficiency and lifespan. At the same time, the support mesh on the air outlet surface can effectively bind the filter material, preventing the activated carbon cloth layers from deforming due to heat during high-temperature heating, maintaining the integrity of the fold shape, and taking into account the structural stability, filtration efficiency, service life, and regenerability of the filter element.

[0013] The number of comb teeth matches the fold, and after insertion, it is fixed with hot melt glue. The length is equal to the fold depth, and the sides are tilted to facilitate insertion and ensure stable fixation.

[0014] The filter element is fixed to the inner wall of the outer frame with sealant to ensure airtightness and improve filtration efficiency. Attached Figure Description

[0015] Figure 1 This is a front view of a regenerable VOC removal chemical filter in the embodiment;

[0016] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0017] Figure 3 This is an exploded structural diagram of the filter element in the embodiment;

[0018] Figure 4 This is a cross-sectional view of the filter element in the embodiment. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1-4 As shown, this utility model discloses a regenerable VOC removal chemical filter, including: an outer frame 1 and a filter element 2 disposed within the outer frame 1. The filter element 2 includes a comb assembly, an activated carbon cloth layer 21, and a support net 22 that are stacked and fixedly connected in sequence. The surface of the activated carbon cloth layer 21 is uniformly folded in reverse. The support net 22 is bonded and fixed to one side of the activated carbon cloth layer 21 and covers the surface of the activated carbon cloth layer 21. The comb assembly consists of multiple combs 23, which are equally spaced along the fold direction of the filter element 2. The combs 23 are used to fix the fold spacing of the activated carbon cloth layer 21.

[0021] Furthermore, such as Figure 4 As shown, the card comb assembly and the support mesh 22 are respectively disposed on the air inlet and air outlet surfaces of the activated carbon cloth layer 21.

[0022] Based on the above structure, such as Figure 3 As shown, during regeneration via hot airflow, a comb 23 is installed on the air inlet side of the activated carbon cloth layer 21 to ensure that the spacing between each fold of the activated carbon cloth layer 21 is consistent. This allows the hot airflow to pass evenly through the filter cross-section of the activated carbon cloth layer 21, avoiding uneven regeneration heating temperatures caused by excessively high or low local wind speeds, thus improving the overall regeneration efficiency and lifespan. At the same time, the support net 22 on the air outlet side of the activated carbon cloth layer 21 effectively binds the filter material of the activated carbon cloth layer 21, preventing the filter cloth of the activated carbon cloth layer 21 from deforming due to heat during high-temperature heating. This maintains the integrity of the folded shape of the activated carbon cloth layer 21 and takes into account the structural stability, filtration efficiency, service life, and regenerability of the activated carbon cloth layer 21.

[0023] Furthermore, such as Figure 3 As shown, the support mesh 22 has a diamond mesh structure.

[0024] Furthermore, such as Figure 3-4 As shown, the comb 23 includes a comb handle 231 and multiple comb teeth 232 that are uniformly and integrally disposed on the comb handle 231. The number of comb teeth 232 is equal to the number of folds in the corresponding activated carbon cloth layer 21. The multiple comb teeth 232 are evenly inserted into the folds in the corresponding side of the activated carbon cloth layer 21. The comb handle 231 and comb teeth 232 are fixed to the surface of the activated carbon cloth layer 21 by hot melt adhesive. This design ensures the precise matching and firm connection between the comb 23 and the activated carbon cloth layer 21, and ensures the function of fixing the fold spacing.

[0025] Furthermore, such as Figure 3-4As shown, the length of the comb teeth 232 is equal to the fold depth of the activated carbon cloth layer 21. The outer walls on both sides of the comb teeth 232 are inclined inward from the comb handle 231 to the end of the comb teeth 232. This design makes it easy for the comb teeth 232 to be inserted into the fold of the activated carbon cloth layer 21. At the same time, after insertion, they can better fit with the fold and improve the stability of the fixation.

[0026] Furthermore, the outer periphery of the filter element 2 is fixed to the inner wall of the outer frame 1 with sealant. This connection method can ensure the sealing between the outer periphery of the filter element 2 and the inner wall of the outer frame 1, prevent hot air from leaking from the gap between the filter element and the outer frame, and improve the regeneration effect.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A regenerable VOC removal chemical filter, comprising an outer frame (1) and a filter element (2) disposed within the outer frame (1), characterized in that: The filter element (2) includes a comb assembly, an activated carbon cloth layer (21), and a support net (22) that are stacked and fixedly connected in sequence. The surface of the activated carbon cloth layer (21) is uniformly folded in reverse. The support net (22) is bonded and fixed to one side of the activated carbon cloth layer (21) and covers the surface of the activated carbon cloth layer (21). The comb assembly consists of multiple combs (23). The multiple combs (23) are equally spaced along the fold direction of the filter element (2). The combs (23) are used to fix the fold spacing of the activated carbon cloth layer (21).

2. The regenerable VOC removal chemical filter according to claim 1, characterized in that: The card comb assembly and the support mesh (22) are respectively disposed on the air inlet and air outlet surfaces of the activated carbon cloth layer (21).

3. A regenerable VOC removal chemical filter according to claim 2, characterized in that: The support mesh (22) is a rhombus mesh structure.

4. A regenerable VOC removal chemical filter according to claim 2, characterized in that: The comb (23) includes a comb handle (231) and a plurality of comb teeth (232) that are uniformly and integrally disposed on the comb handle (231). The number of comb teeth (232) is equal to the number of folds in the corresponding side of the activated carbon cloth layer (21). The plurality of comb teeth (232) are evenly inserted into the folds in the corresponding side of the activated carbon cloth layer (21). The comb handle (231) and the comb teeth (232) are fixed to the surface of the activated carbon cloth layer (21) by hot melt adhesive.

5. A regenerable VOC removal chemical filter according to claim 4, characterized in that: The length of the comb teeth (232) is equal to the fold depth of the activated carbon cloth layer (21), and the outer walls on both sides of the comb teeth (232) are inclined inward from the comb handle (231) to the end of the comb teeth (232).

6. A regenerable VOC removal chemical filter according to claim 5, characterized in that: The outer periphery of the filter element (2) is fixed to the inner wall of the outer frame (1) by sealant.

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