Porous ceramic water purifier filter element

Abstract

The utility model discloses a kind of porous ceramic water purifier filter core, filter core body is hollow cylindrical, is constituted by outer layer filter layer, middle layer support layer and inner layer antibacterial layer, outer layer filter layer is gradient pore structure, material contains diatomite, kaolin etc.;Middle layer support layer is honeycomb, is composed of alumina ceramic and zirconia ceramic;Inner layer antibacterial layer loads nanometer silver particles, this filter core is filtered by gradient pore classification, combines titanium dioxide photocatalysis self-cleaning with nanometer silver antibacterial property, can intercept more than 99% bacteria virus, reduce cleaning frequency, maintain purification effect, honeycomb support layer enhances mechanical strength, improve compression resistance and breakage ability, prolong service life, after testing, its bacteria removal rate reaches 99.8%, can bear 1.5MPa pressure, actual use 6 months filtration effect is stable, cleaning frequency reduces 40%, with efficient filtration and economic practical value.

Description

Technical Field

[0001] This utility model relates to the field of water purifier filter technology, specifically a porous ceramic water purifier filter. Background Technology

[0002] Currently, there are many types of water purifier filter cartridges on the market. Among them, porous ceramic filter cartridges have received widespread attention due to their good physicochemical stability and regenerability. However, existing porous ceramic filter cartridges still have some problems:

[0003] First, the unreasonable pore structure leads to low filtration efficiency, making it unable to effectively intercept tiny particulate impurities and bacteria. Second, the filter element lacks mechanical strength, making it prone to damage during use and affecting its service life. Third, it lacks effective antibacterial and self-cleaning functions, making it prone to bacterial growth after a period of use, thus reducing the filtration effect.

[0004] Therefore, this utility model provides a porous ceramic water purifier filter element to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a porous ceramic water purifier filter element that solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a porous ceramic water purifier filter element, comprising a filter element body, wherein the filter element body is a hollow cylinder, comprising an outer filtration layer, a middle support layer, and an inner antibacterial layer; the outer filtration layer adopts a gradient pore structure, with the pore size gradually decreasing from the outside to the inside, the outermost pore diameter being 5-10 μm, the middle pore diameter being 2-5 μm, and the innermost pore diameter being 0.5-1 μm; the middle support layer adopts a honeycomb structure; and the surface of the inner antibacterial layer is loaded with nano-silver particles.

[0007] Preferably, the outer filter layer material is composed of 60-70% diatomaceous earth, 20-25% kaolin, 5-10% activated carbon, and 3-5% titanium dioxide nanoparticles.

[0008] Preferably, the intermediate support layer material is composed of 70-80% alumina ceramic and 20-30% zirconia ceramic.

[0009] Preferably, the inner antibacterial layer material is based on the middle support layer 12 material, with the addition of 1-2% nano-silver particles.

[0010] Beneficial effects

[0011] This invention provides a porous ceramic water purifier filter element. Compared with the prior art, it has the following advantages:

[0012] 1. This porous ceramic water purifier filter cartridge achieves graded filtration through a gradient pore structure, effectively intercepting more than 99% of bacteria and viruses. Combined with the photocatalytic self-cleaning effect of the outer titanium dioxide nanoparticles and the antibacterial properties of the inner nano silver particles, it not only ensures that the output water quality meets the standards, but also reduces the adhesion of organic matter and the growth of bacteria, reduces the frequency of cleaning, and maintains a long-term stable purification effect.

[0013] 2. The porous ceramic water purifier filter element has a middle honeycomb support layer made of alumina ceramic and zirconium oxide ceramic, which significantly enhances the mechanical strength of the filter element and greatly improves its resistance to pressure and damage. Compared with traditional porous ceramic filter elements, it has a longer service life, reduces the frequency of replacement, and saves on usage costs. Attached Figure Description

[0014] 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 from these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the external structure of this utility model;

[0016] Figure 2 This is a three-dimensional view of the bottom structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the multi-layer structure of the filter element body of this utility model.

[0018] In the diagram: 1. Filter cartridge body; 11. Outer filter layer; 12. Middle support layer; 13. Inner antibacterial layer. Detailed Implementation

[0019] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," 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 application 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 application. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0020] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Reference Figures 1 to 3 This application provides a porous ceramic water purifier filter element, including a filter element body 1. The filter element body 1 is a hollow cylinder, comprising an outer filter layer 11, a middle support layer 12, and an inner antibacterial layer 13. The outer filter layer 11 adopts a gradient pore structure, with the pore size gradually decreasing from the outside to the inside. The outermost pore diameter is 5-10 μm, the middle pore diameter is 2-5 μm, and the innermost pore diameter is 0.5-1 μm. The middle support layer 12 adopts a honeycomb structure. The surface of the inner antibacterial layer 13 is loaded with nano-silver particles. The outer filter layer 11 is composed of 60-70% diatomaceous earth, 20-25% kaolin, 5-10% activated carbon, and 3-5% titanium dioxide nanoparticles. The middle support layer 12 is composed of 70-80% alumina ceramic and 20-30% zirconium oxide ceramic. The inner antibacterial layer 13 material is based on the middle support layer 12 material, with the addition of 1-2% nano silver particles.

[0022] In this embodiment,

[0023] Material proportions:

[0024] Outer filter layer 11: 65% diatomaceous earth, 22% kaolin, 8% activated carbon, and 5% titanium dioxide nanoparticles; Middle support layer 12: 75% alumina ceramic and 25% zirconium oxide ceramic; Inner antibacterial layer 13: 1.5% nano silver particles added to the middle support layer 12.

[0025] Preparation process

[0026] Mixing: Weigh each component according to the above material formula, add them to the ball mill for mixing, and ball mill for 4-6 hours to ensure that the materials are fully and evenly mixed.

[0027] Molding: The isostatic pressing process is adopted, in which the mixed materials are placed in the mold and pressed into a hollow cylindrical blank under a pressure of 100-200MPa.

[0028] Drying: Place the green body in a drying oven and dry it at 80-120℃ for 12-24 hours to remove the moisture from the green body.

[0029] Sintering: The dried green body is placed in a high-temperature sintering furnace and heated to 1200-1400℃ at a heating rate of 5-10℃ / min. It is held at this temperature for 3-5 hours and then cooled with the furnace to obtain a porous ceramic filter element.

[0030] Antibacterial treatment: The sintered filter element is immersed in a solution containing nano-silver particles, and the nano-silver particles are loaded onto the surface of the inner antibacterial layer 13 using an impregnation-reduction method. Specifically, an appropriate amount of reducing agent is added to the solution, and the reaction is carried out at a certain temperature for 2-4 hours. Then, the filter element is removed, rinsed with deionized water, and dried to obtain the porous ceramic water purifier filter element body 1 of this utility model.

[0031] Performance testing

[0032] The filter element body 1 was tested for filtration efficiency. Simulated wastewater containing E. coli was passed through the filter element body 1, and the bacterial content of the effluent was detected. The results showed that the bacterial removal rate reached 99.8%. Mechanical strength test was conducted. Pressure was applied to the filter element body 1, and the filter element body 1 did not break when subjected to a pressure of 1.5 MPa. In actual household water purification test, the filter element body 1 maintained stable filtration effect after 6 months of continuous use, and the cleaning frequency was reduced by 40% compared with traditional filter elements.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A porous ceramic water purifier filter element, characterized in that, The filter includes a filter body (1), which is a hollow cylinder and includes an outer filter layer (11), a middle support layer (12), and an inner antibacterial layer (13). The outer filter layer (11) adopts a gradient pore structure, with the pores gradually decreasing in size from the outside to the inside. The outermost pore diameter is 5-10 μm, the middle part has a pore diameter of 2-5 μm, and the innermost pore diameter is 0.5-1 μm. The middle support layer (12) adopts a honeycomb structure. The surface of the inner antibacterial layer (13) is loaded with nano-silver particles.

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