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CN111229056A - Compound filter element group spare and water purification system - Google Patents

Compound filter element group spare and water purification system Download PDF

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Publication number
CN111229056A
CN111229056A CN202010103186.9A CN202010103186A CN111229056A CN 111229056 A CN111229056 A CN 111229056A CN 202010103186 A CN202010103186 A CN 202010103186A CN 111229056 A CN111229056 A CN 111229056A
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filter element
wall surface
stage pretreatment
pretreatment filter
central tube
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潘丹
程广顺
郭琨
徐海晶
张常亮
郑娅敏
高威
李友铃
申鸿海
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2649—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/08—Flow guidance means within the module or the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

本发明提供一种复合滤芯组件和净水系统，复合滤芯组件包括：预处理滤芯(1)和精细处理滤芯(2)，还包括中心管(3)，所述精细处理滤芯(2)为卷式膜、卷绕在所述中心管(3)上，所述中心管(3)为能允许流体通道的材质制成，且所述中心管(3)的内壁面为第一内凹曲面、和/或所述预处理滤芯(1)也包括形成为第二内凹曲面的内壁面。通过本发明能够在保证过滤效果或提高过滤效果的同时、还能将复合滤芯组件整体的体积做小，相同体积下，增大滤芯的过滤面积，提高了过滤效率，同时实现过滤效果和减小滤芯体积的效果。

Figure 202010103186

The invention provides a composite filter element assembly and a water purification system. The composite filter element assembly comprises: a pretreatment filter element (1) and a fine treatment filter element (2), and also includes a central pipe (3), wherein the fine treatment filter element (2) is a roll The film is wound on the central tube (3), the central tube (3) is made of a material that can allow fluid passage, and the inner wall surface of the central tube (3) is a first concave curved surface, And/or the pretreatment filter element (1) also includes an inner wall surface formed as a second concave curved surface. Through the invention, the overall volume of the composite filter element assembly can be reduced while ensuring the filtering effect or improving the filtering effect. Under the same volume, the filtering area of the filter element can be increased, the filtering efficiency can be improved, and the filtering effect and reducing The effect of filter volume.

Figure 202010103186

Description

一种复合滤芯组件和净水系统A composite filter element assembly and water purification system

技术领域technical field

本发明属于净水技术领域，具体涉及一种复合滤芯组件和净水系统。The invention belongs to the technical field of water purification, and in particular relates to a composite filter element assembly and a water purification system.

背景技术Background technique

目前，市场净水器已越来越普遍，人们对净水器的要求越来越高，净水器所使用的滤芯也各种各样，从单级滤芯发展到多级滤芯，其中抗菌PP棉滤芯、活性炭滤芯和超滤膜滤芯组成的多级滤芯在实现分级过滤时，这样整体设计比较复杂，为了保证过滤效果而增设多级过滤却导致存在体积较大、过滤效率低等问题。At present, water purifiers in the market have become more and more common, and people have higher and higher requirements for water purifiers. The filter elements used in water purifiers are also various, from single-stage filter elements to multi-level filter elements, among which antibacterial PP The overall design of the multi-stage filter element composed of cotton filter element, activated carbon filter element and ultrafiltration membrane filter element is relatively complicated when implementing graded filtration. In order to ensure the filtration effect, the addition of multi-stage filtration results in problems such as large volume and low filtration efficiency.

由于现有技术中的多级滤芯组件存在体积较大、过滤效率低等技术问题，因此本发明研究设计出一种复合滤芯组件和净水系统。Since the multi-stage filter element assembly in the prior art has technical problems such as large volume and low filtration efficiency, the present invention researches and designs a composite filter element assembly and a water purification system.

发明内容SUMMARY OF THE INVENTION

因此，本发明要解决的技术问题在于克服现有技术中的复合滤芯组件无法保证过滤效率的同时还能减小体积的缺陷，从而提供一种复合滤芯组件和净水系统。Therefore, the technical problem to be solved by the present invention is to overcome the defect that the composite filter element assembly in the prior art cannot guarantee the filtration efficiency while reducing the volume, thereby providing a composite filter element assembly and a water purification system.

本发明提供一种复合滤芯组件，其包括：The present invention provides a composite filter element assembly, which comprises:

预处理滤芯和精细处理滤芯，还包括中心管，所述精细处理滤芯为卷式膜、卷绕在所述中心管上，所述中心管为能允许流体通道的材质制成，且所述中心管的内壁面形成为第一内凹曲面、和/或所述预处理滤芯也包括形成为第二内凹曲面的内壁面。The pretreatment filter element and the fine treatment filter element also include a center tube, the fine treatment filter element is a rolled membrane, wound on the center tube, the center tube is made of a material that can allow fluid passage, and the center tube is The inner wall surface of the tube is formed as a first concave curved surface, and/or the pretreatment filter element also includes an inner wall surface formed as a second inner concave curved surface.

优选地，Preferably,

所述能允许流体通过的滤材材质包括：碳材质、聚丙烯pp材质和陶瓷材质中的至少一种；和/或，所述精细处理滤芯为反渗透膜。The material of the filter material that can allow fluid to pass through includes: at least one of carbon material, polypropylene pp material and ceramic material; and/or, the fine processing filter element is a reverse osmosis membrane.

优选地，Preferably,

所述中心管为由所述碳材质组成的筒状碳棒结构；或，所述中心管为由所述聚丙烯pp材质组成的筒状PP结构；或，所述中心管由所述陶瓷材质组成的筒状陶瓷管的结构。The central tube is a cylindrical carbon rod structure composed of the carbon material; or, the central tube is a cylindrical PP structure composed of the polypropylene pp material; or, the central tube is composed of the ceramic material The structure consists of cylindrical ceramic tubes.

优选地，Preferably,

所述预处理滤芯包括第一级预处理滤芯和第二级预处理滤芯，所述第一级预处理滤芯设置于所述第二级预处理滤芯的径向外周，且所述第二级预处理滤芯的内壁面形成为所述第二内凹曲面。The pretreatment filter element includes a first stage pretreatment filter element and a second stage pretreatment filter element, the first stage pretreatment filter element is arranged on the radial outer periphery of the second stage pretreatment filter element, and the second stage pretreatment filter element The inner wall surface of the processing filter element is formed as the second concave curved surface.

优选地，Preferably,

所述中心管的内壁面上还设置有第一凹槽；和/或，所述第二级预处理滤芯的内壁面上还设置有第二凹槽。A first groove is further provided on the inner wall surface of the central pipe; and/or, a second groove is further provided on the inner wall surface of the second-stage pretreatment filter element.

优选地，Preferably,

当包括第一凹槽时，所述第一凹槽为多个、且沿所述中心管的内壁面上均匀分布；当包括第二凹槽时，所述第二凹槽为多个、且沿所述第二级预处理滤芯的内壁面上均匀分布。When the first grooves are included, the first grooves are multiple and evenly distributed along the inner wall of the central tube; when the second grooves are included, the second grooves are multiple and It is evenly distributed along the inner wall of the second-stage pretreatment filter element.

优选地，Preferably,

所述中心管的内周还设置有第一支撑骨架，所述第一支撑骨架的形状与所述中心管的内壁面形状相匹配、也为内凹的曲面结构；和/或，所述第二级预处理滤芯的内周还设置有第二支撑骨架，所述第二支撑骨架的形状与所述第二级预处理滤芯的内壁面形状相匹配、也为内凹的曲面结构。The inner circumference of the central tube is further provided with a first support frame, the shape of the first support frame matches the shape of the inner wall surface of the central tube, and is also a concave curved surface structure; and/or, the first support frame is The inner circumference of the secondary pretreatment filter element is further provided with a second support frame, and the shape of the second support frame matches the shape of the inner wall surface of the second stage pretreatment filter element, and is also a concave curved surface structure.

优选地，Preferably,

所述第一级预处理滤芯的材质为PP棉，所述第二级预处理滤芯的材质为活性炭；和/或，所述第一级预处理滤芯为圆筒状结构，所述第二级预处理滤芯为圆筒状结构、且其内壁面为内凹曲面。The material of the first-stage pretreatment filter element is PP cotton, and the material of the second-stage pretreatment filter element is activated carbon; and/or, the first-stage pretreatment filter element is a cylindrical structure, and the second-stage pretreatment filter element is The pretreatment filter element has a cylindrical structure, and its inner wall surface is a concave curved surface.

优选地，Preferably,

还包括超滤滤芯、设置于所述中心管的径向内周，所述超滤滤芯为至少一个。It also includes an ultrafiltration filter element, which is arranged on the radial inner circumference of the central pipe, and the ultrafiltration filter element is at least one.

本发明还提供一种净水系统，其包括前任一项所述的复合滤芯组件。The present invention also provides a water purification system, which includes the composite filter element assembly described in any one of the preceding items.

本发明提供的一种复合滤芯组件和净水系统具有如下有益效果：The composite filter element assembly and the water purification system provided by the present invention have the following beneficial effects:

本发明通过将中心管的内壁面做成第一内凹曲面，能够有效增大中心管内部流体与其接触的面积，也有效增加了中心管外部流体与其接触的面积，从而有效增强过滤效果，将预处理滤芯也设置为包括第二内凹曲面的内壁面，也能够有效增大预处理滤芯内部流体与其接触的面积，也有效增加了预处理滤芯外部流体与其接触的面积，从而有效增强过滤效果，因此能够在保证过滤效果或提高过滤效果的同时、还能将复合滤芯组件整体的体积做小，相同体积下，增大滤芯的过滤面积，提高了过滤效率，同时实现过滤效果和减小滤芯体积的效果；并且通过在第一内凹曲面和/或第二内凹曲面上开设第一凹槽、第二凹槽的结构，能够进一步增大该壁面与流体之间的接触面积，进一步提高过滤效果，进一步在相同体积下，增大滤芯的过滤面积，提高了过滤效率，或是在过滤效果相同或提高的基础上减小了滤芯的体积。By making the inner wall surface of the central tube into a first concave curved surface, the invention can effectively increase the contact area of the fluid inside the central tube and the contact area of the fluid outside the central tube, thereby effectively enhancing the filtering effect, and The pretreatment filter element is also set to include the inner wall surface of the second concave curved surface, which can also effectively increase the contact area of the fluid inside the pretreatment filter element and the contact area of the fluid outside the pretreatment filter element, thereby effectively enhancing the filtering effect. Therefore, while ensuring the filtering effect or improving the filtering effect, the overall volume of the composite filter element assembly can be reduced. Under the same volume, the filtering area of the filter element can be increased, the filtering efficiency can be improved, and the filtering effect can be achieved and the filter element can be reduced. and the structure of opening the first groove and the second groove on the first concave curved surface and/or the second concave curved surface can further increase the contact area between the wall surface and the fluid, and further improve the The filtration effect can further increase the filtration area of the filter element under the same volume, improve the filtration efficiency, or reduce the volume of the filter element on the basis of the same or improved filtration effect.

附图说明Description of drawings

图1是本发明的复合滤芯组件的内部剖视结构示意图。FIG. 1 is a schematic view of the internal cross-sectional structure of the composite filter element assembly of the present invention.

图中附图标记表示为：The reference numbers in the figure are indicated as:

1、预处理滤芯；11、第一级预处理滤芯；12、第二级预处理滤芯；13、第二凹槽；2、精细处理滤芯；3、中心管；31、第一凹槽；4、超滤滤芯；5、瓶体；6、上盖。1. Pretreatment filter element; 11. First-stage pretreatment filter element; 12. Second-stage pretreatment filter element; 13. Second groove; 2. Fine treatment filter element; 3. Center pipe; 31. First groove; 4 , Ultrafiltration filter element; 5. Bottle body; 6. Top cover.

具体实施方式Detailed ways

如图1所示，本发明提供一种复合滤芯组件，其包括：As shown in Figure 1, the present invention provides a composite filter element assembly, which includes:

预处理滤芯1和精细处理滤芯2，还包括中心管3，所述精细处理滤芯2为卷式膜、卷绕在所述中心管3上，所述中心管3为能允许流体通道的材质制成，且所述中心管3的内壁面为第一内凹曲面、和/或所述预处理滤芯1也包括形成为第二内凹曲面的内壁面。The pretreatment filter element 1 and the fine treatment filter element 2 also include a center pipe 3, the fine treatment filter element 2 is a roll-type membrane, wound on the center pipe 3, and the center pipe 3 is made of a material that can allow fluid passage. and the inner wall surface of the central tube 3 is a first concave curved surface, and/or the pretreatment filter element 1 also includes an inner wall surface formed as a second concave curved surface.

本发明通过将中心管的内壁面做成第一内凹曲面，能够有效增大中心管内部流体与其接触的面积，也有效增加了中心管外部流体与其接触的面积，从而有效增强过滤效果，将预处理滤芯也设置为包括第二内凹曲面的内壁面，也能够有效增大预处理滤芯内部流体与其接触的面积，也有效增加了预处理滤芯外部流体与其接触的面积，从而有效增强过滤效果，因此能够在保证过滤效果或提高过滤效果的同时、还能将复合滤芯组件整体的体积做小，相同体积下，增大滤芯的过滤面积，提高了过滤效率，同时实现过滤效果和减小滤芯体积的效果。还通过将中心管设置为允许流体通过的结构(优选碳棒)，将反渗透膜卷制在该中心管上，相对于现有中还需在碳棒外设置中心管以对RO膜进行卷绕的结构而言有效地省去了中心管的结构，缩小了卷制反渗透复合滤芯的体积，减小了复合滤芯的空间。By making the inner wall surface of the central tube into a first concave curved surface, the invention can effectively increase the contact area of the fluid inside the central tube and the contact area of the fluid outside the central tube, thereby effectively enhancing the filtering effect, and The pretreatment filter element is also set to include the inner wall surface of the second concave curved surface, which can also effectively increase the contact area of the fluid inside the pretreatment filter element and the contact area of the fluid outside the pretreatment filter element, thereby effectively enhancing the filtering effect. Therefore, while ensuring the filtering effect or improving the filtering effect, the overall volume of the composite filter element assembly can be reduced. Under the same volume, the filtering area of the filter element can be increased, the filtering efficiency can be improved, and the filtering effect can be achieved and the filter element can be reduced. volume effect. The reverse osmosis membrane is also rolled on the central tube by setting the central tube as a structure (preferably a carbon rod) that allows fluid to pass through. Compared with the existing one, the central tube needs to be set outside the carbon rod to roll the RO membrane. In terms of the winding structure, the structure of the central pipe is effectively omitted, the volume of the rolled reverse osmosis composite filter element is reduced, and the space of the composite filter element is reduced.

优选地，Preferably,

所述能允许流体通过的滤材材质包括：碳材质、聚丙烯pp材质和陶瓷材质中的至少一种；和/或，所述精细处理滤芯2为反渗透膜。这是本发明的滤材材质的优选材质，能够实现允许水的有效通过，除此之外还能对经过其的水进行过滤作用，将中心管实现支撑功能的同时还能形成一级的过滤效果，克服了由于滤芯级数增加而带来的体积增加的缺陷，减小体积，节省成本。The material of the filter material that can allow fluid to pass through includes: at least one of carbon material, polypropylene pp material and ceramic material; and/or, the fine processing filter element 2 is a reverse osmosis membrane. This is the preferred material of the filter material of the present invention, which can allow the effective passage of water, and in addition, can filter the water passing through it. The effect is to overcome the defect of volume increase due to the increase of filter stages, reduce volume and save cost.

优选地，Preferably,

所述中心管3为由所述碳材质组成的筒状碳棒结构；或，所述中心管3为由所述聚丙烯pp材质组成的筒状PP结构；或，所述中心管3为由所述陶瓷材质组成的筒状陶瓷管的结构。本发明可允许流体通过的滤材可包括：碳棒、圆筒状聚丙烯pp材质滤材、陶瓷管等，优选利用可改善口感的碳作为卷式膜元件的中心管材质，可舍弃现有卷式膜使用的塑料件中心管，避免现有卷式膜元件塑料件中心管的使用，可实现一支膜元件具有两级过滤功能；利用碳质中心管，可避免后续再使用口感滤芯，膜元件集精细过滤滤芯和后置口感滤芯两级过滤功能于一体；碳质中心管无肉眼可视大孔，其表面布满结构性微孔，相比于传统塑料件可视大孔的中心管，卷式膜片产水更容易收集。PP筒状中心管能有效去除所过滤液体中的各种颗粒杂质，可多层式深度结构，纳污量大，过滤流量大，压差小，不含任何化学粘合剂，更卫生，安全，耐酸、碱、有机溶液、油类，有良好的化学稳定性，集表面、深层、粗精滤为一体；具有流量大、耐腐蚀耐高压低成本等特点。用以阻挡水中的铁锈、泥沙、虫卵等大颗粒物质。陶瓷筒状中心管能够对饮用水进行过滤、抗菌和活化处理，有害的去除余氯和悬浮污染物、有机化学物质、颜色与异味，通过使用该滤芯能够过滤出达到一定饮用标准的饮用水。The central tube 3 is a cylindrical carbon rod structure composed of the carbon material; or, the central tube 3 is a cylindrical PP structure composed of the polypropylene pp material; or, the central tube 3 is composed of The structure of the cylindrical ceramic tube composed of the ceramic material. The filter material that can allow fluid to pass through the present invention can include: carbon rod, cylindrical polypropylene pp material filter material, ceramic tube, etc. It is preferable to use carbon that can improve the taste as the material of the center tube of the rolled membrane element, and the existing The plastic center tube used in the roll-type membrane avoids the use of the existing plastic-part center tube of the roll-type membrane element, and can realize a membrane element with two-stage filtration function; the use of the carbon center tube can avoid the subsequent use of the taste filter element, The membrane element integrates the two-stage filtration function of the fine filter element and the post-taste filter element; the carbon center tube has no macroscopic pores visible to the naked eye, and its surface is covered with structural micropores. Compared with the traditional plastic parts, the center of the visible macropores Tube, rolled diaphragm permeate water is easier to collect. The PP cylindrical central tube can effectively remove various particles and impurities in the filtered liquid. It can be multi-layered deep structure, with large dirt holding capacity, large filtration flow, small pressure difference, no chemical adhesive, and more hygienic and safe. , acid, alkali, organic solution, oil, has good chemical stability, integrates surface, deep, coarse and fine filtration; has the characteristics of large flow, corrosion resistance, high pressure resistance and low cost. It is used to block large particles such as rust, sediment, and insect eggs in the water. The ceramic cylindrical center tube can filter, antibacterial and activate the drinking water, and remove harmful chlorine and suspended pollutants, organic chemicals, color and odor.

优选地，Preferably,

所述预处理滤芯1包括第一级预处理滤芯11和第二级预处理滤芯12，所述第一级预处理滤芯11设置于所述第二级预处理滤芯12的径向外周，且所述第二级预处理滤芯12的内壁面形成为所述第二内凹曲面。这是本发明的预处理滤芯的第二内凹曲面的形成具体位置，即成型于第二级预处理滤芯的径向内周(内壁面上)，能够有效使得经过第二级预处理滤芯内周的流体与第二级预处理滤芯之间的接触面积能够有效的增大，提高过滤效果、还能减小复合滤芯整体体积(与现有复合滤芯相比，在过滤效果相同时能够减小体积，在体积相同时能够提高过滤效果)。The pretreatment filter element 1 includes a first-stage pretreatment filter element 11 and a second-stage pretreatment filter element 12. The first-stage pretreatment filter element 11 is arranged on the radial outer circumference of the second-stage pretreatment filter element 12, and the The inner wall surface of the second-stage pretreatment filter element 12 is formed as the second inner concave curved surface. This is the specific position of the formation of the second concave curved surface of the pretreatment filter element of the present invention, that is, it is formed on the radial inner circumference (inner wall surface) of the second-stage pretreatment filter element, which can effectively make the inner surface of the second-stage pretreatment filter element pass through effectively. The contact area between the surrounding fluid and the second-stage pretreatment filter element can be effectively increased, the filtration effect can be improved, and the overall volume of the composite filter element can be reduced (compared with the existing composite filter element, it can be reduced when the filtration effect is the same. volume, the filtration effect can be improved when the volume is the same).

优选地，Preferably,

所述中心管3的内壁面上还设置有第一凹槽31；和/或，所述第二级预处理滤芯12的内壁面上还设置有第二凹槽13。通过在第一内凹曲面和/或第二内凹曲面上开设第一凹槽、第二凹槽的结构，能够进一步增大该壁面与流体之间的接触面积，进一步提高过滤效果，进一步在相同体积下，增大滤芯的过滤面积，提高了过滤效率，或是在过滤效果相同或提高的基础上减小了滤芯的体积。The inner wall surface of the central pipe 3 is further provided with a first groove 31 ; and/or, the inner wall surface of the second-stage pretreatment filter element 12 is further provided with a second groove 13 . By opening the first groove and the second groove on the first concave curved surface and/or the second concave curved surface, the contact area between the wall surface and the fluid can be further increased, the filtering effect can be further improved, and the Under the same volume, the filtration area of the filter element is increased, the filtration efficiency is improved, or the volume of the filter element is reduced on the basis of the same or improved filtration effect.

优选地，Preferably,

当包括第一凹槽31时，所述第一凹槽31为多个、且沿所述中心管3的内壁面上均匀分布；当包括第二凹槽13时，所述第二凹槽13为多个、且沿所述第二级预处理滤芯12的内壁面上均匀分布。这是本发明的第一凹槽和第二凹槽的进一步优选结构形式，能够进一步有效增大滤芯与流体之间的接触面积，提高过滤效果，或者在过滤效果相同时减小滤芯整体体积。When the first grooves 31 are included, there are multiple first grooves 31 and are evenly distributed along the inner wall surface of the central tube 3; when the second grooves 13 are included, the second grooves 13 There are multiple and evenly distributed along the inner wall surface of the second-stage pretreatment filter element 12 . This is a further preferred structural form of the first groove and the second groove of the present invention, which can further effectively increase the contact area between the filter element and the fluid, improve the filtering effect, or reduce the overall volume of the filter element when the filtering effect is the same.

优选地，Preferably,

所述中心管3的内周还设置有第一支撑骨架(未示出)，所述第一支撑骨架的形状与所述中心管3的内壁面形状相匹配、也为内凹的曲面结构；和/或，所述第二级预处理滤芯12的内周还设置有第二支撑骨架(未示出)，所述第二支撑骨架的形状与所述第二级预处理滤芯12的内壁面形状相匹配、也为内凹的曲面结构。通过第一支撑骨架能够对碳棒中心管起到有效支撑的作用，通过第二支撑骨架还能对第二级预处理滤芯起到有效支撑的作用，提高碳棒的结构强度，且也为形状匹配的内凹曲面能够加强结合面积，提高结合强度。The inner circumference of the central tube 3 is also provided with a first support frame (not shown), and the shape of the first support frame matches the shape of the inner wall surface of the central tube 3 and is also a concave curved surface structure; And/or, the inner circumference of the second-stage pretreatment filter element 12 is further provided with a second support frame (not shown), the shape of the second support frame and the inner wall surface of the second-stage pretreatment filter element 12 The shape is matched and is also a concave surface structure. The first support skeleton can effectively support the carbon rod center tube, and the second support skeleton can also effectively support the second-stage pretreatment filter element, so as to improve the structural strength of the carbon rod, and it is also shaped The matching concave curved surface can strengthen the bonding area and improve the bonding strength.

优选地，Preferably,

所述第一级预处理滤芯11的材质为PP棉，所述第二级预处理滤芯12的材质为活性炭；和/或，所述第一级预处理滤芯11为圆筒状结构，所述第二级预处理滤芯12为圆筒状结构、且其内壁面为内凹曲面。这是本发明的两级预处理滤芯的分别材质，以及优选结构形式，通过PP棉能够过滤出泥沙等大颗粒杂质，活性炭能够吸附余氯等，圆筒状结构能够方便进行内外套叠。The material of the first-stage pretreatment filter element 11 is PP cotton, and the material of the second-stage pretreatment filter element 12 is activated carbon; and/or, the first-stage pretreatment filter element 11 is a cylindrical structure, and the The second-stage pretreatment filter element 12 has a cylindrical structure, and its inner wall surface is a concave curved surface. These are the respective materials and preferred structural forms of the two-stage pretreatment filter element of the present invention. The PP cotton can filter out large particles of impurities such as sediment, the activated carbon can absorb residual chlorine, etc., and the cylindrical structure can facilitate the inner and outer stacking.

优选地，Preferably,

还包括超滤滤芯4、设置于所述中心管3的径向内周，所述超滤滤芯4为至少一个。这是本发明的后置滤芯的优选结构形式，通过超滤滤芯能够对水进行有效杀菌过滤作用，优选为一个后置滤芯。It also includes an ultrafiltration filter element 4, which is arranged on the radial inner circumference of the central pipe 3, and the ultrafiltration filter element 4 is at least one. This is the preferred structural form of the rear filter element of the present invention. The ultrafiltration filter element can effectively sterilize and filter water, and it is preferably a rear filter element.

本发明还提供一种净水系统，其包括前任一项所述的复合滤芯组件。The present invention also provides a water purification system, which includes the composite filter element assembly described in any one of the preceding items.

本发明在于将圆柱形滤芯本体进行整体内凹曲面，同时在滤芯本体开启多个凹槽，相同体积下，增大滤芯的过滤面积，提高了过滤效率；系统过滤效果下体积减小，同时有效解决滤芯占用空间大和过滤效率低的问题。The invention lies in that the cylindrical filter element body is formed with an integral concave curved surface, and at the same time, a plurality of grooves are opened in the filter element body. Under the same volume, the filtering area of the filter element is increased, and the filtration efficiency is improved; the volume is reduced under the system filtration effect, and the effective Solve the problem of large space occupied by the filter element and low filtration efficiency.

本发明的复合滤芯，包含上盖、瓶体(见附图1)。瓶体内部涉及多级过滤，包括预处理滤芯、精细过滤及后处理滤芯。预处理由PP棉、颗粒活性炭组成；精细处理由反渗透膜组成；后处理由碳棒、超滤膜组成。水口由原水口、纯水口、废水口组成。第一级过滤设置在滤芯上半部分，包括材料PP棉、活性炭；第二及过滤设置在滤芯下半部分，包括反渗透膜、碳棒中心管、超滤膜；滤芯包含PP棉、活性炭、反渗透膜、碳棒中心管、超滤膜，通过将碳棒中心管内凹，同等过滤面积下，增大与水接触的面积，滤芯的体积更小，提升了过滤效果；同时，为了更好的增大过滤面积，在中心管本体上设计多个凹槽，凹槽可开成多个条形槽，同时也可以开成多个圆形槽。The composite filter element of the present invention includes an upper cover and a bottle body (see Figure 1). The interior of the bottle involves multi-stage filtration, including pretreatment filter elements, fine filtration and post-treatment filter elements. The pretreatment is composed of PP cotton and granular activated carbon; the fine treatment is composed of reverse osmosis membrane; the post-treatment is composed of carbon rod and ultrafiltration membrane. The nozzle is composed of raw nozzle, pure nozzle and waste water nozzle. The first stage of filtration is set on the upper half of the filter element, including materials such as PP cotton and activated carbon; the second filter is set on the lower half of the filter element, including reverse osmosis membrane, carbon rod central tube, and ultrafiltration membrane; the filter element includes PP cotton, activated carbon, Reverse osmosis membrane, carbon rod central tube, ultrafiltration membrane, by concave the carbon rod central tube, under the same filtration area, the area in contact with water is increased, the volume of the filter element is smaller, and the filtration effect is improved; at the same time, in order to better In order to increase the filtering area, a plurality of grooves are designed on the central pipe body, and the grooves can be opened into a plurality of strip grooves, and can also be opened into a plurality of circular grooves.

净水水路系统分析：整个净水水路系统如图1，自来水从原水口进入，水流从两侧留到滤芯上半部分，依次经过PP棉、颗粒活性炭过滤芯后，过滤后得水在上中心管聚集，流入到滤芯下半部分两侧，依次经过反渗透膜、碳棒中心管，过滤后得水聚集在碳棒中心管内，再经过超滤膜过滤，最后完成整个原水过滤，纯水从中间的纯水口流出。废水出水则是水流经过滤芯下半部分的两侧，冲刷反渗透膜，从而实现冲洗，废水从废水口流出。Analysis of water purification system: The entire water purification system is shown in Figure 1. The tap water enters from the original water inlet, and the water flows from both sides to the upper part of the filter element. After passing through the PP cotton and granular activated carbon filter elements in turn, the filtered water is in the upper center. The tube gathers and flows into both sides of the lower half of the filter element, and passes through the reverse osmosis membrane and the carbon rod central tube in turn. After filtration, the water is collected in the carbon rod central tube, and then filtered by the ultrafiltration membrane, and finally the entire raw water filtration is completed. The pure water outlet in the middle flows out. The wastewater effluent is that the water flows through both sides of the lower half of the filter element to flush the reverse osmosis membrane, so as to achieve flushing, and the wastewater flows out from the wastewater outlet.

以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range. The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (10)

1. A composite filter element assembly, comprising: the method comprises the following steps:
the filter element comprises a pretreatment filter element (1), a fine treatment filter element (2) and a central tube (3), wherein the fine treatment filter element (2) is a roll-type membrane and is wound on the central tube (3), the central tube (3) is made of a material capable of allowing a fluid channel, the inner wall surface of the central tube (3) is a first concave curved surface, and/or the pretreatment filter element (1) also comprises an inner wall surface formed into a second concave curved surface.
2. The composite filter element assembly of claim 1, wherein:
the filter material that can allow the fluid to pass through includes: at least one of a carbon material, a polypropylene pp material and a ceramic material; and/or the fine treatment filter element (2) is a reverse osmosis membrane.
3. The composite filter element assembly of claim 2, wherein:
the central tube (3) is of a cylindrical carbon rod structure consisting of the carbon material; or the central pipe (3) is of a cylindrical PP structure made of the polypropylene PP material; or the central tube (3) is a cylindrical ceramic tube structure made of the ceramic material.
4. The composite filter element assembly according to any one of claims 1-3, wherein:
the pretreatment filter element (1) comprises a first-stage pretreatment filter element (11) and a second-stage pretreatment filter element (12), wherein the first-stage pretreatment filter element (11) is arranged at the radial periphery of the second-stage pretreatment filter element (12), and the inner wall surface of the second-stage pretreatment filter element (12) is formed into a second concave curved surface.
5. The composite filter element assembly of claim 4, wherein:
a first groove (31) is further formed in the inner wall surface of the central tube (3); and/or a second groove (13) is further arranged on the inner wall surface of the second-stage pretreatment filter element (12).
6. The composite filter element assembly of claim 5, wherein:
when the first grooves (31) are included, the first grooves (31) are multiple and are uniformly distributed along the inner wall surface of the central tube (3); when the second-stage pretreatment filter element comprises a plurality of second grooves (13), the second grooves (13) are uniformly distributed along the inner wall surface of the second-stage pretreatment filter element (12).
7. The composite filter element assembly of claim 4, wherein:
the inner periphery of the central pipe (3) is also provided with a first supporting framework, and the shape of the first supporting framework is matched with the shape of the inner wall surface of the central pipe (3) and is also of an inwards concave curved surface structure; and/or a second supporting framework is further arranged on the inner periphery of the second-stage pretreatment filter element (12), and the shape of the second supporting framework is matched with the shape of the inner wall surface of the second-stage pretreatment filter element (12) and is also of an inwards concave curved surface structure.
8. The composite filter element assembly of claim 4, wherein:
the first-stage pretreatment filter element (11) is made of PP cotton, and the second-stage pretreatment filter element (12) is made of activated carbon; and/or, the first-stage pretreatment filter element (11) is of a cylindrical structure, and the second-stage pretreatment filter element (12) is of a cylindrical structure, and the inner wall surface of the second-stage pretreatment filter element is an inwards concave curved surface.
9. The composite filter element assembly according to any one of claims 1-8, wherein:
still include ultrafiltration filter core (4), set up in the radial inner periphery of center tube (3), ultrafiltration filter core (4) are at least one.
10. A water purification system, its characterized in that: comprising the composite filter element assembly of any of claims 1-9.
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