Functional filter element structure

Abstract

This invention provides a functional filter element structure, comprising, from the inside out, a first filter layer and a second filter layer; the first filter layer has a thickness of 10-100 mm; the second filter layer has a thickness of 10-100 mm; water passes through the second filter layer and the first filter layer sequentially for filtration; the first filter layer is a functional filter layer; the second filter layer is a coarse filter layer; the functional filter layer contains target functional filter media for filtering specific pollutants. This invention precisely controls the mass ratio and spatial distribution (concentric circles / top-bottom / left-right structure) of activated carbon and lead-removing filter media using a partitioning mold, thereby increasing the effective contact area of ​​the lead-removing layer. The concentric cylindrical structure of Example 1 maintained a 98% removal rate in a 10,000-liter extreme test, demonstrating that the filter media saturation threshold is increased several times that of conventional products.

Description

Technical Field

[0001] This utility model relates to filtration, and more particularly to a functional filter element structure. Background Technology

[0002] Traditional water treatment technologies (such as coagulation sedimentation and sand filtration) have limited efficiency in removing dissolved lead. Therefore, end-of-pipe deep filtration technology has become the last line of defense to ensure drinking water safety.

[0003] Currently, lead filtration technologies on the market mainly rely on activated carbon adsorption, ion exchange, KDF (Kinetic Degradation Fluxion) alloy filtration, and composite filter media, but many technical bottlenecks still exist:

[0004] If the mixed filter media structure is inefficient, existing filter cartridges often use a simple mixture of activated carbon and lead removal media (such as zirconium phosphate, ferrocyanide, chelating resin, etc.), which causes lead ions to diffuse randomly in the disordered gaps between the filter media, resulting in low reaction efficiency. Experimental data shows that when the flow rate of traditional mixed filter cartridges is >2L / min, the lead removal rate drops sharply to below 85%, which is far from meeting the needs of high-flow-rate water purification (such as commercial direct drinking water systems).

[0005] Furthermore, the demand for treating water contaminated with high concentrations of lead (such as industrial wastewater and aging water supply pipes) is becoming increasingly prominent, as conventional filter cartridges fail rapidly when the lead concentration exceeds 1 mg / L. Therefore, there is an urgent need for a novel lead filter cartridge structure that combines high adsorption efficiency, long lifespan, and low flow resistance, along with a manufacturing process that can be mass-produced, to meet the needs of all scenarios, from household water purifiers to industrial wastewater treatment. Utility Model Content

[0006] The purpose of this invention is to provide a functional filter element structure to solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] In a first aspect, this utility model provides a functional filter element structure, the filter element structure comprising, from the inside out:

[0009] First filter layer and second filter layer; the thickness of the first filter layer is 10-100mm; the thickness of the second filter layer is 10-100mm; water passes through the second filter layer and the first filter layer in sequence to complete the filtration;

[0010] The first filter layer is a functional filter layer; the second filter layer is a coarse filter layer.

[0011] The functional filter layer contains target functional filter media for filtering specific pollutants.

[0012] In a preferred embodiment, the first filter layer and the second filter layer are concentric cylinders.

[0013] In a preferred embodiment, the first filter layer and the second filter layer are arranged in an upper and lower structure.

[0014] In a preferred embodiment, the first filter layer and the second filter layer are arranged in a left-right configuration.

[0015] In one or more preferred embodiments, the target functional filter media for filtering specific pollutants in the first filter layer is lead removal filter media and activated carbon powder.

[0016] In one or more preferred embodiments, the second filter layer contains activated carbon powder.

[0017] In one or more preferred embodiments, the lead-removing filter material in the first filter layer accounts for 20%-100% of the total mass.

[0018] In one or more preferred embodiments, the mass ratio of the first filter layer to the second filter layer is 1:0.5-0.8.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] (1) Optimization of directional filtration dynamics: The reverse distribution of "outer layer of activated carbon → inner layer of lead removal layer" (Example 1) is adopted so that the water flow is first pretreated by activated carbon to remove large molecular organic matter and avoid clogging the micropores of the lead removal layer.

[0021] (2) Maximizing filter media utilization: By precisely controlling the mass ratio (20:45) and spatial distribution (concentric circles / top-bottom / left-right structure) of activated carbon and lead-removing filter media through a partitioning mold, the effective contact area of ​​the lead removal layer is increased. The concentric cylindrical structure of Example 1 still maintained a 98% removal rate in a 10,000-liter extreme test, proving that the filter media saturation threshold is increased to several times that of conventional products.

[0022] (3) The process is highly scalable. This preparation method has outstanding advantages in flexible production: the mold separation molding technology supports the precise construction of filter layers of different thicknesses, meeting the customized needs from portable to industrial-grade equipment; the synergistic effect of the curing and compaction processes significantly improves the bulk density and mechanical stability of the filter material, ensuring that it will not collapse during long-term use.

[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below. Attached Figure Description

[0024] Figure 1This is a top view of Embodiment 1 of the present utility model.

[0025] Figure 2 This is a cross-sectional view of Embodiment 1 of the present utility model.

[0026] Figure 3 This is a front view of Embodiment 2 of the present utility model.

[0027] Figure 4 This is a front view of Embodiment 3 of the present utility model.

[0028] Figure label:

[0029] 1. Filter element structure; 2. First filter layer; 3. Second filter layer. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “on the left,” “left side,” “on the right,” and “on the right side” are used herein for convenience of description to describe the relationship between one component or feature shown in the figure and other components or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of components in use and operation. For example, if a component in the figure is flipped, then a component or feature described as “below,” “under,” or “below” other components or features would be oriented “above” other components or features. Thus, the exemplary terms “below” and “under” can include both upper and lower orientations. “On the left” and “on the left” can include both left and right orientations.

[0033] 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.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Example 1

[0036] Please refer to Figures 1-2 A functional filter element structure, wherein the filter element structure 1 comprises, from the inside out:

[0037] First filter layer 2 and second filter layer 3; the thickness of the first filter layer 2 is 50mm; the thickness of the second filter layer 3 is 50mm; water passes through the second filter layer 3 and the first filter layer 2 in sequence to complete the filtration;

[0038] The first filter layer 2 is a functional filter layer; the second filter layer 3 is a coarse filter layer.

[0039] The functional filter layer contains targeted functional filter media that filters specific pollutants.

[0040] The first filter layer 2 and the second filter layer 3 are concentric cylinders.

[0041] The first filter layer 2 contains lead-removing filter media and activated carbon powder. The mass ratio of lead-removing filter media to activated carbon powder is 20:45.

[0042] The second filter layer 3 contains activated carbon powder.

[0043] The mass ratio of the first filter layer 2 to the second filter layer 3 is 13:7.

[0044] The method for preparing the filter element structure includes the following steps:

[0045] S1: Prepare activated carbon powder and lead removal filter media;

[0046] S2: Prepare a mold with a cavity containing a storage slot, and install a divider tool inside the storage slot to separate it into two cavities.

[0047] S3: Fill the first chamber with 350g of activated carbon, and the second chamber with 450g of activated carbon and 200g of lead-removing filter material. After curing, remove the separating tool from the mold.

[0048] S4: Compact the filter media using a press.

[0049] Example 2

[0050] Please refer to Figure 3 ,

[0051] A functional filter element structure, wherein the filter element structure 1 comprises, from the inside out:

[0052] First filter layer 2 and second filter layer 3; the thickness of the first filter layer 2 is 50mm; the thickness of the second filter layer 3 is 50mm; water passes through the second filter layer 3 and the first filter layer 2 in sequence to complete filtration;

[0053] The first filter layer 2 is a functional filter layer; the second filter layer 3 is a coarse filter layer.

[0054] The functional filter layer contains targeted functional filter media that filters specific pollutants.

[0055] The first filter layer 2 and the second filter layer 3 are arranged in an upper and lower structure. They can be designed as cuboids.

[0056] The first filter layer 2 contains lead-removing filter media and activated carbon powder. The mass ratio of lead-removing filter media to activated carbon powder is 20:45.

[0057] The second filter layer 3 contains activated carbon powder.

[0058] The mass ratio of the first filter layer 2 to the second filter layer 3 is 13:7.

[0059] The method for preparing the filter element structure includes the following steps:

[0060] S1: Prepare activated carbon powder and lead removal filter media;

[0061] S2: Prepare a mold with a cavity containing a storage slot, and install a divider tool inside the storage slot to separate it into two cavities.

[0062] S3: Fill the first chamber with 350g of activated carbon, and the second chamber with 450g of activated carbon and 200g of lead-removing filter material. After curing, remove the separating tool from the mold.

[0063] S4: Compact the filter media using a press.

[0064] Example 3

[0065] Please refer to Figure 4 A functional filter element structure, wherein the filter element structure 1 comprises, from the inside out:

[0066] First filter layer 2 and second filter layer 3; the thickness of the first filter layer 2 is 50mm; the thickness of the second filter layer 3 is 50mm; water passes through the second filter layer 3 and the first filter layer 2 in sequence to complete filtration;

[0067] The first filter layer 2 is a functional filter layer; the second filter layer 3 is a coarse filter layer.

[0068] The functional filter layer contains targeted functional filter media that filters specific pollutants.

[0069] The first filter layer 2 and the second filter layer 3 have a left-right structure.

[0070] The first filter layer 2 contains lead-removing filter media and activated carbon powder. The mass ratio of lead-removing filter media to activated carbon powder is 20:45.

[0071] The second filter layer 3 contains activated carbon powder.

[0072] The mass ratio of the first filter layer 2 to the second filter layer 3 is 13:7.

[0073] The method for preparing a lead filter element structure includes the following steps:

[0074] S1: Prepare activated carbon powder and lead removal filter media;

[0075] S2: Prepare a mold with a cavity containing a storage slot, and install a divider tool inside the storage slot to separate it into two cavities.

[0076] S3: Fill the first chamber with 350g of activated carbon, and the second chamber with 450g of activated carbon and 200g of lead-removing filter material. After curing, remove the separating tool from the mold.

[0077] S4: Compact the filter media using a press. The lead filter cartridge structures obtained in Examples 1-3 were subjected to lead filtration testing, with the testing standards referring to the common requirements for North American market access in ANSI / NSF53-2022 (Drinking Water Treatment Units - Health Effects).

[0078] Test conditions: 15 ppb lead-spiked solution, flow rate 4 L / min.

[0079] The test results showed that the filter media achieved a lead removal rate of up to 99% at the beginning of the test, demonstrating excellent performance.

[0080] After filtering 10,000 liters of water contaminated with extremely high concentrations of lead, the removal rate only dropped to 98%, still exceeding the requirement of 96.7%. This indicates that the filter media maintains high efficiency, has a large adsorption capacity, and is not easily saturated even after long-term use.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A functional filter element structure, characterized in that, The filter element structure (1) comprises, from the inside out, the following components: First filter layer (2) and second filter layer (3); the thickness of the first filter layer (2) is 10-100mm; the thickness of the second filter layer (3) is 10-100mm; water passes through the second filter layer (3) and the first filter layer (2) in sequence to complete filtration; The first filter layer (2) is a functional filter layer; the second filter layer (3) is a coarse filter layer; The functional filter layer contains target functional filter media for filtering specific pollutants.

2. The functional filter element structure according to claim 1, characterized in that, The first filter layer (2) and the second filter layer (3) are concentric cylinders.

3. The functional filter element structure according to claim 1, characterized in that, The first filter layer (2) and the second filter layer (3) are an upper and lower structure.

4. The functional filter element structure according to claim 1, characterized in that, The first filter layer (2) and the second filter layer (3) are left and right structures.

5. The functional filter element structure according to any one of claims 1-4, characterized in that, The target functional filter media for filtering specific pollutants in the first filter layer (2) are lead removal filter media and activated carbon powder.

6. The functional filter element structure according to any one of claims 1-4, characterized in that, The second filter layer (3) contains activated carbon powder.

7. The functional filter element structure according to claim 5, characterized in that, The lead-removing filter material in the first filter layer (2) accounts for 20%-100% of the total mass.

8. The functional filter element structure according to claim 1, characterized in that, The mass ratio of the first filter layer (2) to the second filter layer (3) is 1:0.5-0.8.

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