WO2018184546A1 - 复合滤芯和净水设备 - Google Patents

复合滤芯和净水设备 Download PDF

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Publication number
WO2018184546A1
WO2018184546A1 PCT/CN2018/081819 CN2018081819W WO2018184546A1 WO 2018184546 A1 WO2018184546 A1 WO 2018184546A1 CN 2018081819 W CN2018081819 W CN 2018081819W WO 2018184546 A1 WO2018184546 A1 WO 2018184546A1
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WO
WIPO (PCT)
Prior art keywords
opening
tub
filter
inner tub
joint
Prior art date
Application number
PCT/CN2018/081819
Other languages
English (en)
French (fr)
Inventor
郑跃东
孙天厚
Original Assignee
佛山市顺德区美的饮水机制造有限公司
美的集团股份有限公司
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Application filed by 佛山市顺德区美的饮水机制造有限公司, 美的集团股份有限公司 filed Critical 佛山市顺德区美的饮水机制造有限公司
Publication of WO2018184546A1 publication Critical patent/WO2018184546A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B01D35/306—Filter mounting adapter
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • 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
    • C02F2201/004—Seals, connections

Definitions

  • the invention relates to the field of water purification equipment, in particular to a composite filter element and a water purification device.
  • the existing water purification equipment is provided with a filter core structure.
  • a pretreatment filter element for coarse filtration
  • a post-treatment filter element for fine filtration
  • the above pre-treatment filter and post-treatment filter are usually two separate individuals and are not easy to install.
  • the main object of the present invention is to provide a composite filter element, which aims to solve the technical problem that the pre-treatment filter element and the post-treatment filter element are two independent individuals in the prior art, which is inconvenient to install.
  • the composite filter provided by the present invention comprises:
  • An inner tub is disposed in the outer tub, and an upper end surface of the inner tub is provided with a first opening communicating with the filter joint, and a gap is formed between an outer wall surface of the inner tub and an inner wall surface of the outer tub;
  • a first filter material located outside the inner tub to form an external filter passage outside the inner tub;
  • a second filter material is disposed in the inner tub to form a built-in filter passage in the inner tub.
  • the first opening periphery of the inner tub is provided with an annular inner barrel joint facing upward, and the inner barrel joint is provided with a sealing structure for sealingly connecting the filter element joint.
  • the sealing structure comprises a sealing ring groove recessed in a circumferential surface of the inner barrel joint and a sealing joint disposed in the sealing ring groove.
  • the sealing connector is an elastomeric sealing ring.
  • a lower end of the inner tub is spaced apart from a lower wall of the outer tub, and the first filter material is disposed between a lower end of the inner tub and a lower wall of the outer tub.
  • the composite filter element further comprises:
  • the lower end of the inner tub is further provided with a second opening communicating with the inner space of the first filter medium, the central tube passing through the first opening and the second opening to communicate the interior of the first filter medium Space and the filter connector.
  • the composite filter element further comprises:
  • partitioning plate disposed in an annular shape; the inner tub is disposed downwardly, the opening of the inner tub forms the second opening, and the partitioning disc cover is disposed at an opening of the inner tub, the center tube An inner port of the partitioning disk and the first opening are bored.
  • the outer tub is provided with an upwardly facing opening, the filter cartridge joint covering the opening of the outer tub.
  • the inner tub is made of ABS plastic or PP plastic.
  • the invention also provides a water purification device comprising a composite filter element, the composite filter element comprising:
  • An inner tub is disposed in the outer tub, and an upper end surface of the inner tub is provided with a first opening communicating with the filter joint, and a gap is formed between an outer wall surface of the inner tub and an inner wall surface of the outer tub;
  • a first filter material located outside the inner tub to form an external filter passage outside the inner tub;
  • a second filter material is disposed in the inner tub to form a built-in filter passage in the inner tub.
  • the first opening periphery of the inner tub is provided with an annular inner barrel joint facing upward, and the inner barrel joint is provided with a sealing structure for sealingly connecting the filter element joint.
  • the sealing structure comprises a sealing ring groove recessed in a circumferential surface of the inner barrel joint and a sealing joint disposed in the sealing ring groove.
  • the sealing connector is an elastomeric sealing ring.
  • a lower end of the inner tub is spaced apart from a lower wall of the outer tub, and the first filter material is disposed between a lower end of the inner tub and a lower wall of the outer tub.
  • the composite filter element further comprises:
  • the lower end of the inner tub is further provided with a second opening communicating with the inner space of the first filter medium, the central tube passing through the first opening and the second opening to communicate the interior of the first filter medium Space and the filter connector.
  • the composite filter element further comprises:
  • partitioning plate disposed in an annular shape; the inner tub is disposed downwardly, the opening of the inner tub forms the second opening, and the partitioning disc cover is disposed at an opening of the inner tub, the center tube An inner port of the partitioning disk and the first opening are bored.
  • the outer tub is provided with an upwardly facing opening, the filter cartridge joint covering the opening of the outer tub.
  • the inner tub is made of ABS plastic or PP plastic.
  • an inner tub is disposed in the outer tub provided with the filter joint, the inner bucket is connected to the filter joint, and the first filter material is disposed outside the inner tub, and the second filter material is disposed in the inner tub, thereby making the inner bucket
  • An external filtering passage is formed between the outer wall surface and the inner wall surface of the outer tub, and a built-in filtering passage is formed in the inner tub; it can be understood that the two independent filtering passages are combined into one integral structure, which has the prior art
  • the filter element structure of two independent filter channels must be formed by two-part filter element installation (such as welding), and the composite filter element provided by the single body of the invention can realize two kinds of filtering functions which do not affect each other, simplifying the filter element structure of the water purification device. Installation process.
  • FIG. 1 is a schematic structural view of an embodiment of a composite filter element according to the present invention.
  • Figure 2 is a schematic exploded view of the composite filter element of Figure 1;
  • Figure 3 is a side elevational view of the composite filter element of Figure 1;
  • Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3;
  • Figure 5 is a schematic structural view of the filter joint of Figure 1;
  • Figure 6 is a cross-sectional view taken along line VI-VI of Figure 5;
  • Figure 7 is a schematic structural view of the inner tub of Figure 1;
  • Figure 8 is a top plan view of the inner tub of Figure 7;
  • Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8.
  • Figure 10 is an enlarged schematic view of a portion A in Figure 4.
  • the directional indication is only used to explain in a certain posture (as shown in the drawing)
  • the relative positional relationship between the components, the motion situation, and the like if the specific posture changes, the directional indication also changes accordingly.
  • first”, “second”, etc. in the embodiments of the present invention, the description of the "first”, “second”, etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the invention proposes a composite filter element.
  • the composite filter element comprises:
  • the outer tub 2 is connected to the filter joint 1;
  • the inner tub 3 is disposed in the outer tub 2, and the upper end surface of the inner tub 3 is provided with a first opening 34 communicating with the filter element joint 1, and a gap is formed between the outer wall surface of the inner tub 3 and the inner wall surface of the outer tub 2;
  • the first filter medium 22 is located outside the inner tub 3 such that an outer filter passage 21 is formed outside the inner tub 3;
  • the second filter material 32 is located in the inner tub 3 such that a built-in filter passage 31 is formed in the inner tub 3.
  • first filter medium 22 and the second filter material 32 are both in the shape of a cylinder.
  • first filter material 22 divides the external filter channel 21 into the first water inlet chamber 211 and the first water outlet chamber 212
  • the second filter material 32 divides the built-in filter passage 31 into the second water inlet chamber 311 and the second water outlet chamber 312.
  • the filter element joint 1 is provided with a first passage connected to the external filter passage 21
  • the water inlet 11 and the first water outlet 12 the first filter 22 is located between the first water inlet 11 and the first water outlet 12
  • the filter connector 1 is further provided with a second water inlet 13 communicating with the built-in filter passage 31 and The second water outlet 14 (the second water inlet 13 and the second water outlet 14 communicate with the first opening 34), and the second filter material 32 is located between the second water inlet 13 and the second water outlet 14.
  • the water to be filtered passes through the first water inlet 11 (or the second water inlet 13) of the filter element joint 1 into the first water inlet chamber 211 (or the second water inlet chamber 311) and passes through the first filter medium 22 (or The second filter material 32) obtains filtered water in the first water outlet chamber 212 (or the second water outlet chamber 312), and the filtered water is finally taken out through the first water outlet 12 (or the second water outlet 14) of the filter element joint 1.
  • an inner tub 3 is disposed in the outer tub 2 provided with the filter joint 1 , the inner tub 3 is connected to the filter joint 1 , and the first filter 22 is disposed outside the inner tub 3 , and the second filter 32 is disposed.
  • an external filter passage 21 is formed between the outer wall surface of the inner tub 3 and the inner wall surface of the outer tub 2, and a built-in filter passage 31 is formed in the inner tub 3. It is understood that the two separate filters are arranged.
  • the channel combination is a whole structure.
  • the filter structure having two independent filter channels must be formed by two-part filter element installation (such as welding), and the composite filter element provided by the single unit of the invention can achieve mutual influence. Two filtering functions simplify the installation process of the filter element structure of the water purification equipment.
  • the first opening 34 of the inner tub 3 is provided with an annular inner barrel joint 33 on the periphery thereof, and the inner barrel joint 33 is provided with a sealing structure for sealingly connecting the filter element joint 1.
  • the filter element joint 1 has a first sealing joint 15 which is annular, and the first sealing joint 15 can be fitted and connected with the inner barrel joint 33. It can be understood that the inner barrel 3 and the filter element joint 1 can be effectively strengthened. The tightness of the joint ensures better protection of the external filter passage 21 and the built-in filter passage 31 from water. It should be noted that the present design is not limited thereto.
  • the inner barrel joint 33 and the first sealing joint 15 may also be reinforced by a hot melt adhesive, ultrasonic wave or the like.
  • the composite filter element further includes an upper cover 4 disposed in the inner barrel joint 33.
  • the filter element joint 1 further has an annular second sealing joint 16, and the second sealing joint 16 is located at the first sealing joint 15.
  • the inner peripheral surface of the second sealing joint 16 is adapted to connect the outer peripheral surface of the upper cover 4, and the inlet of the second water inlet chamber 311 is formed between the first sealing joint 15 and the second sealing joint 16.
  • the sealing structure includes a seal ring groove 331 recessed in the circumferential surface of the inner tub joint 33 and a seal connecting member 332 disposed in the seal ring groove 331.
  • the outer circumferential surface of the inner tub joint 33 is adapted to connect the inner circumferential surface of the first sealing joint 15, and the seal ring groove 331 is provided on the outer circumferential surface of the inner tub joint 33; it can be understood that the seal ring groove 331 and the sealing joint 332
  • the matching sealing is a sealing method widely used in the prior art, and has a simple structure and a low price. It is applied to the connection position of the inner barrel joint 33 and the first sealing joint 15, and the connection is convenient and the sealing effect is good.
  • the present design is not limited thereto.
  • the inner circumferential surface of the inner tub joint 33 is adapted to connect the outer circumferential surface of the first sealing joint 15 , and the seal ring groove 331 is recessed on the inner circumferential surface of the inner tub joint 33 .
  • the sealing structure can also be other sealing structures.
  • the sealing connector 332 is an elastic sealing ring, and the elastic sealing ring is inexpensive and has a good sealing effect. It should be noted that the present design is not limited thereto. In other embodiments, the sealing connector 332 may also be a sealed solid glue, a sealing liquid glue or the like.
  • the lower end of the inner tub 3 is spaced apart from the lower wall of the outer tub 2, and the first filter medium 22 is disposed between the lower end of the inner tub 3 and the lower wall of the outer tub 2.
  • the first filter medium 22 and the second filter medium 32 are arranged along the axial direction of the outer tub 2 and the inner tub 3, which can reduce the radial length requirement of the outer tub 2 (reduced the radial length of the outer tub 2) and reduces The space occupied by the composite filter element in the radial direction of the outer tub 2.
  • the present design is not limited thereto.
  • the first filter medium 22 may also be disposed between the side peripheral wall of the inner tub 3 and the side peripheral wall of the outer tub 2 .
  • the outer tub 2 is provided with an upward opening, and the filter cartridge joint 1 covers the opening of the outer tub 2.
  • the filter element joint 1 further has two sealing ring ribs 18 disposed near the edge, and a slot is formed between the two sealing ring ribs 18 for sealing the upper end of the peripheral wall of the outer tub 2; it can be understood that, Convenient assembly between the outer tub 2 and the filter cartridge joint 1.
  • the present design is not limited thereto.
  • the outer tub 2 is also provided with an upper end opening, and the filter joint 1 covers the opening of the upper end surface of the outer tub 2.
  • the inlet of the first water inlet chamber 211 is formed between the sealing ring rib 18 on the inner side of the filter element joint 1 and the first sealing joint 15.
  • the composite filter element further includes: a central tube 6; the lower end of the inner barrel 3 is further provided with a second opening 35 communicating with the inner space of the first filter medium 22, and the central tube 6 is disposed through the first opening 34. And sealingly passing through the second opening 35 to communicate the internal space of the first filter medium 22 and the filter element joint 1.
  • the central tube 6 is also threaded through the inner opening of the upper cover 4, and the filter element joint 1 further has a third sealing joint 17 in an annular shape, and the inner circumferential surface of the third sealing joint 17 is adapted to connect the central tube 6
  • the outer peripheral surface of the upper end forms an outlet of the second water discharge chamber 312 between the outer peripheral surface of the upper end of the center tube 6 and the second sealing joint 16, and the outlet of the first water discharge chamber 212 is formed between the third sealing joints 17.
  • the first water inlet 11 and the first water outlet 12 are disposed on the same side, which reduces the processing difficulty of the filter joint 1 , and at the same time, the central tube 6 passes through the inner barrel 3 to complete the water discharge, and is fully utilized.
  • the present invention is not limited to the space in the outer tub 2, and in other embodiments, the second opening 35 is not disposed on the lower end surface of the inner tub 3, and the filter connector 1 extends from the upper portion of the outer tub 2 to the lower portion of the outer tub 2.
  • the center tube 6 communicates with the filter element joint 1 from the bottom of the outer tub 2.
  • the composite filter element further includes: a partitioning plate 5 disposed in an annular shape; the inner tub 3 is disposed to face downward, and the opening of the inner tub 3 forms a second opening 35, and the partitioning disc 5 is disposed at an opening of the inner tub 3
  • the center tube 6 passes through the first opening 34 and seals the inner opening of the partitioning plate 5.
  • the water to be filtered enters the first water inlet port 11 of the filter element joint 1, passes through the first sealing joint 15 and the inner sealing ring rib 18 Entering the first water inlet chamber 211, and then flowing to the first filter material 22 at the bottom of the outer tub 2, filtering through the first filter material 22 to reach the first water outlet chamber 212, and flowing upward through the inner tube 3 through the center tube 6 to the third In the sealing joint 17, finally flowing out through the first water outlet 12 of the filter element joint 1; for the built-in filter channel 31, the water to be filtered enters the second water inlet 13 of the filter element joint 1, passes through the first sealing joint 15 and the second sealing joint 16 Entering between the second water inlet chamber 311 and flowing to the second filter material 32, filtering through the second filter material 32 to reach the second water outlet chamber 312, and then passing through the space between the center tube 6 and the inner hole of the upper cover 4 It flows between the upper
  • the inner tub 3 is made of ABS plastic or PP plastic. It can be understood that ABS plastic and PP plastic are widely used materials in the field of composite filter cores in the prior art, and have the advantages of good hygiene and low price. It should be noted that the present design is not limited thereto. In other embodiments, the inner tub 3 may also be made of other materials that do not affect the composite filter water filtering.
  • the present invention also provides a water purifying device, which comprises a composite filter element.
  • a water purifying device which comprises a composite filter element.
  • the specific structure of the composite filter element refers to the above embodiment. Since the water purifying device adopts all the technical solutions of all the above embodiments, it has at least the above implementation. All the beneficial effects brought about by the technical solutions of the examples will not be repeated here.

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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)
  • Water Treatment By Sorption (AREA)
  • Filtering Materials (AREA)

Abstract

一种复合滤芯及包括该复合滤芯的净水设备，复合滤芯包括：滤芯接头（1）；外桶（2），连通于滤芯接头（1）；内桶（3），设于外桶（2）内，内桶（3）的上端面设有连通于滤芯接头（1）的第一开口（34），且内桶（3）的外壁面与外桶（2）的内壁面之间有间隙；第一滤材（22），位于内桶（3）外，以使内桶（3）外形成一外置过滤通道（21）；以及第二滤材（32），位于内桶（3）内，以使内桶（3）内形成一内置过滤通道（31）。

Description

复合滤芯和净水设备
技术领域
本发明涉及净水设备领域，特别涉及一种复合滤芯和净水设备。
背景技术
现有的净水设备都设置有滤芯结构，为了进一步保护滤芯结构，一般在第一过滤水路中设置预处理滤芯（用于粗过滤），为了进一步改善水质，获得更佳口感，一般在后处理过滤水路中设置后处理滤芯（用于精细过滤）。但是，上述预处理滤芯和后处理滤芯通常为两个独立的个体，不便于安装。
发明内容
本发明的主要目的是提出一种复合滤芯，旨在解决现有技术中预处理滤芯和后处理滤芯为两相互独立的个体，不便于安装的技术问题。
为实现上述目的，本发明提出的复合滤芯，包括:
滤芯接头；
外桶，连通于所述滤芯接头；
内桶，设于所述外桶内，所述内桶的上端面设有连通于所述滤芯接头的第一开口，且所述内桶的外壁面与所述外桶的内壁面之间有间隙；
第一滤材，位于所述内桶外，以使所述内桶外形成一外置过滤通道；以及
第二滤材，位于所述内桶内，以使所述内桶内形成一内置过滤通道。
优选地，所述内桶的第一开口周缘朝上设有呈环状的内桶接头，所述内桶接头上设有用于密封连接所述滤芯接头的密封结构。
优选地，所述密封结构包括凹设于所述内桶接头周面的密封环槽以及设于所述密封环槽内的密封连接件。
优选地，所述密封连接件为弹性密封圈。
优选地，所述内桶的下端与所述外桶的下壁呈间隔设置，所述第一滤材设于所述内桶的下端与所述外桶的下壁之间。
优选地，所述复合滤芯还包括：
中心管；所述内桶的下端还设有连通于所述第一滤材内部空间的第二开口，所述中心管穿设第一开口和第二开口，以连通所述第一滤材的内部空间和所述滤芯接头。
优选地，所述复合滤芯还包括：
分隔盘，呈环状设置；所述内桶为朝下敞口设置，所述内桶的敞口形成所述第二开口，所述分隔盘盖设于所述内桶的敞口处，所述中心管穿设所述分隔盘的内口和所述第一开口。
优选地，所述外桶为朝上敞口设置，所述滤芯接头盖合所述外桶的敞口。
优选地，所述内桶由ABS塑料或PP塑料制成。
本发明还提出一种净水设备，包括复合滤芯，该复合滤芯包括:
滤芯接头；
外桶，连通于所述滤芯接头；
内桶，设于所述外桶内，所述内桶的上端面设有连通于所述滤芯接头的第一开口，且所述内桶的外壁面与所述外桶的内壁面之间有间隙；
第一滤材，位于所述内桶外，以使所述内桶外形成一外置过滤通道；以及
第二滤材，位于所述内桶内，以使所述内桶内形成一内置过滤通道。
优选地，所述内桶的第一开口周缘朝上设有呈环状的内桶接头，所述内桶接头上设有用于密封连接所述滤芯接头的密封结构。
优选地，所述密封结构包括凹设于所述内桶接头周面的密封环槽以及设于所述密封环槽内的密封连接件。
优选地，所述密封连接件为弹性密封圈。
优选地，所述内桶的下端与所述外桶的下壁呈间隔设置，所述第一滤材设于所述内桶的下端与所述外桶的下壁之间。
优选地，所述复合滤芯还包括：
中心管；所述内桶的下端还设有连通于所述第一滤材内部空间的第二开口，所述中心管穿设第一开口和第二开口，以连通所述第一滤材的内部空间和所述滤芯接头。
优选地，所述复合滤芯还包括：
分隔盘，呈环状设置；所述内桶为朝下敞口设置，所述内桶的敞口形成所述第二开口，所述分隔盘盖设于所述内桶的敞口处，所述中心管穿设所述分隔盘的内口和所述第一开口。
优选地，所述外桶为朝上敞口设置，所述滤芯接头盖合所述外桶的敞口。
优选地，所述内桶由ABS塑料或PP塑料制成。
本发明技术方案通过在盖设有滤芯接头的外桶内设置一内桶，使内桶连通于滤芯接头，再将第一滤材设于内桶外，第二滤材设于内桶内，从而使内桶的外壁面和外桶的内壁面之间形成一外置过滤通道，内桶内形成一内置过滤通道；可以理解，如此设置，即将两独立的过滤通道结合为了一个整体结构，相较于现有技术具有两相互独立过滤通道的滤芯结构必须由两分体滤芯安装（如焊接）形成，本发明单体设置的复合滤芯即可实现互不影响的两种过滤功能，简化了净水设备的滤芯结构的安装过程。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明复合滤芯一实施例的结构示意图；
图2为图1中复合滤芯的爆炸示意图；
图3为图1中复合滤芯的侧视示意图；
图4为图3中沿IV-IV线的剖切示意图；
图5为图1中滤芯接头的结构示意图；
图6为图5中沿VI-VI线的剖切示意图；
图7为图1中内桶的结构示意图；
图8为图7中内桶的俯视示意图；
图9为图8中沿IX-IX线的剖切示意图；
图10为图4中A处的放大示意图。
附图标号说明：
标号 名称 标号 名称 标号 名称
1 滤芯接头 11 第一进水口 12 第一出水口
13 第二进水口 14 第二出水口 15 第一密封接头
16 第二密封接头 17 第三密封接头 18 密封环筋
2 外桶 21 外置过滤通道 211 第一进水腔
212 第一出水腔 22 第一滤材 3 内桶
31 内置过滤通道 311 第二进水腔 312 第二出水腔
32 第二滤材 33 内桶接头 331 密封环槽
332 密封连接件 34 第一开口 35 第二开口
4 上盖 5 分隔盘 6 中心管
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种复合滤芯。
在本发明实施例中，参照图1至图4，该复合滤芯包括:
滤芯接头1；
外桶2，连通于滤芯接头1；
内桶3，设于外桶2内，内桶3的上端面设有连通于滤芯接头1的第一开口34，且内桶3的外壁面与外桶2的内壁面之间有间隙；
第一滤材22，位于内桶3外，以使内桶3外形成一外置过滤通道21；以及
第二滤材32，位于内桶3内，以使内桶3内形成一内置过滤通道31。
可以理解，第一滤材22和第二滤材32都呈筒状，本实施例中，第一滤材22将外置过滤通道21分隔为第一进水腔211和第一出水腔212，第二滤材32将内置过滤通道31分隔为第二进水腔311和第二出水腔312；另外，参照图5和图6，滤芯接头1上设有连通于外置过滤通道21的第一进水口11和第一出水口12，第一滤材22位于第一进水口11和第一出水口12之间；滤芯接头1上还设有连通于内置过滤通道31的第二进水口13和第二出水口14（第二进水口13、第二出水口14连通于第一开口34），第二滤材32位于第二进水口13和第二出水口14之间。具体地，待过滤水通过滤芯接头1的第一进水口11（或第二进水口13）进入第一进水腔211（或第二进水腔311），穿过第一滤材22（或第二滤材32）于第一出水腔212（或第二出水腔312）内得到过滤水，过滤水最后通过滤芯接头1的第一出水口12（或第二出水口14）接出。
本发明技术方案通过在盖设有滤芯接头1的外桶2内设置一内桶3，使内桶3连通于滤芯接头1，再将第一滤材22设于内桶3外，第二滤材32设于内桶3内，从而使内桶3的外壁面和外桶2的内壁面之间形成一外置过滤通道21，内桶3内形成一内置过滤通道31；可以理解，如此设置，即将两独立的过滤通道结合为了一个整体结构，相较于现有技术具有两相互独立过滤通道的滤芯结构必须由两分体滤芯安装（如焊接）形成，本发明单体设置的复合滤芯即可实现互不影响的两种过滤功能，简化了净水设备的滤芯结构的安装过程。
进一步地，参照图7至图10，内桶3的第一开口34周缘朝上设有呈环状的内桶接头33，内桶接头33上设有用于密封连接滤芯接头1的密封结构。本实施例中，滤芯接头1具有一呈环状的第一密封接头15，该第一密封接头15可与内桶接头33适配连接；可以理解，如此设置，能够有效加强内桶3与滤芯接头1连接处的密封性，从而更好地保证外置过滤通道21和内置过滤通道31不串水。需要说明的是，本设计不限于此，于其他实施例中，内桶接头33与第一密封接头15之间也可通过热熔胶、超声波等方式加强密封连接。
本实施例中，复合滤芯还包括设于内桶接头33内呈环状的上盖4，滤芯接头1还具有一呈环状的第二密封接头16，第二密封接头16位于第一密封接头15内侧，第二密封接头16的内周面适配连接上盖4的外周面，第一密封接头15和第二密封接头16之间形成第二进水腔311的入口。
进一步地，密封结构包括凹设于内桶接头33周面的密封环槽331以及设于密封环槽331内的密封连接件332。本实施例中，内桶接头33的外周面适配连接第一密封接头15的内周面，密封环槽331设于内桶接头33的外周面上；可以理解，密封环槽331和密封连接件332的配合密封是现有技术中广泛使用的密封方式，结构简单、价格便宜，应用在内桶接头33和第一密封接头15的连接位置，连接方便且密封效果好。需要说明的是，本设计不限于此，于其他实施例中，内桶接头33的内周面适配连接第一密封接头15的外周面，密封环槽331凹设于内桶接头33的内周面上；当然，该密封结构也可为其他密封结构。优选地，密封连接件332为弹性密封圈，弹性密封圈价格便宜且密封效果好。需要说明的是，本设计不限于此，于其他实施例中，密封连接件332也可为密封固体胶、密封液体胶等。
进一步地，参照图4，内桶3的下端与外桶2的下壁呈间隔设置，第一滤材22设于内桶3的下端与外桶2的下壁之间。可以理解，第一滤材22和第二滤材32沿外桶2和内桶3的轴向布置，能够降低对外桶2的径向长度要求（减小外桶2的径向长度），减小复合滤芯沿外桶2的径向所占的空间。需要说明的是，本设计不限于此，于其他实施例中，第一滤材22也可设于内桶3的侧周壁与外桶2的侧周壁之间。
进一步地，外桶2为朝上敞口设置，滤芯接头1盖合外桶2的敞口。本实施例中，滤芯接头1还具有靠近边缘设置的两密封环筋18，两密封环筋18之间形成有插槽，以供外桶2的周壁上端密封插设；可以理解，如此设置，方便外桶2和滤芯接头1之间的组装。需要说明的是，本设计不限于此，于其他实施例中，外桶2也经为上端面开口设置，滤芯接头1盖合外桶2上端面的开口。本实施例中，滤芯接头1上靠内侧的密封环筋18和第一密封接头15之间形成第一进水腔211的入口。
进一步地，参照图2和图4，复合滤芯还包括：中心管6；内桶3的下端还设有连通于第一滤材22内部空间的第二开口35，中心管6穿设第一开口34并密封穿设第二开口35，以连通第一滤材22的内部空间和滤芯接头1。本实施例中，中心管6还穿设上盖4的内口，滤芯接头1还具有一呈环状的第三密封接头17，该第三密封接头17的内周面适配连接中心管6上端的外周面，中心管6上端的外周面和第二密封接头16之间形成第二出水腔312的出口，第三密封接头17之间形成第一出水腔212的出口。可以理解，如此设置，使得第一进水口11和第一出水口12都设于同一侧，降低了滤芯接头1的加工难度，同时，中心管6穿设内桶3而完成出水，也充分利用了外桶2内的空间。需要说明的是，充分利用外桶2内空间，本设计不限于此，于其他实施例中，内桶3下端面未设置第二开口35，滤芯接头1从外桶2上部延伸到外桶2下部，中心管6从外桶2底部连通于滤芯接头1。
进一步地，复合滤芯还包括：分隔盘5，呈环状设置；内桶3为朝下敞口设置，内桶3的敞口形成第二开口35，分隔盘5盖设于内桶3的敞口处，中心管6穿设第一开口34并密封穿设分隔盘5的内口。可以理解，如此设置，利于第二滤材32从内桶3的敞口装入内桶3中，提高了第二滤材32与内桶3装配的便捷性；同时，如此，降低了内桶3的工艺难度，从而提高内桶3的生产效率，降低整个复合滤芯的生产成本。需要说明的是，本设计不限于此，于其他实施例中，内桶3的下端面上设有上述第二开口35。
参照图4，以下描述本实施例复合滤芯的具体过滤过程，对于外置过滤通道21，待过滤水进入滤芯接头1的第一进水口11，通过第一密封接头15和内侧密封环筋18之间进入第一进水腔211，再流至位于外桶2底部的第一滤材22，经第一滤材22过滤到达第一出水腔212，通过中心管6向上穿过内桶3流向第三密封接头17内，最后通过滤芯接头1的第一出水口12流出；对于内置过滤通道31，待过滤水进入滤芯接头1的第二进水口13，通过第一密封接头15和第二密封接头16之间进入第二进水腔311，并流至第二滤材32处，经第二滤材32过滤到达第二出水腔312，再穿过中心管6和上盖4内孔之间的空间流至中心管6上端和第二密封接头16之间，最后通过滤芯接头1的第二出水口14流出。
进一步地，内桶3由ABS塑料或PP塑料制成。可以理解，ABS塑料和PP塑料是现有技术中复合滤芯领域中广泛使用的材料，具有卫生性好、价格便宜等优点。需要说明的是，本设计不限于此，于其他实施例中，内桶3也可由其他不影响复合滤芯滤水的材料制成。
本发明还提出一种净水设备，该净水设备包括复合滤芯，该复合滤芯的具体结构参照上述实施例，由于本净水设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (18)

  1. 一种复合滤芯，用于净水设备，其特征在于，包括:
    滤芯接头；
    外桶，连通于所述滤芯接头；
    内桶，设于所述外桶内，所述内桶的上端面设有连通于所述滤芯接头的第一开口，且所述内桶的外壁面与所述外桶的内壁面之间有间隙；
    第一滤材，位于所述内桶外，以使所述内桶外形成一外置过滤通道；以及
    第二滤材，位于所述内桶内，以使所述内桶内形成一内置过滤通道。
  2. 如权利要求1所述的复合滤芯，其特征在于，所述内桶的第一开口周缘朝上设有呈环状的内桶接头，所述内桶接头上设有用于密封连接所述滤芯接头的密封结构。
  3. 如权利要求2所述的复合滤芯，其特征在于，所述密封结构包括凹设于所述内桶接头周面的密封环槽以及设于所述密封环槽内的密封连接件。
  4. 如权利要求3所述的复合滤芯，其特征在于，所述密封连接件为弹性密封圈。
  5. 如权利要求1所述的复合滤芯，其特征在于，所述内桶的下端与所述外桶的下壁呈间隔设置，所述第一滤材设于所述内桶的下端与所述外桶的下壁之间。
  6. 如权利要求5所述的复合滤芯，其特征在于，所述复合滤芯还包括：
    中心管；所述内桶的下端还设有连通于所述第一滤材内部空间的第二开口，所述中心管穿设第一开口和第二开口，以连通所述第一滤材的内部空间和所述滤芯接头。
  7. 如权利要求6所述的复合滤芯，其特征在于，所述复合滤芯还包括：
    分隔盘，呈环状设置；所述内桶为朝下敞口设置，所述内桶的敞口形成所述第二开口，所述分隔盘盖设于所述内桶的敞口处，所述中心管穿设所述分隔盘的内口和所述第一开口。
  8. 如权利要求1所述的复合滤芯，其特征在于，所述外桶为朝上敞口设置，所述滤芯接头盖合所述外桶的敞口。
  9. 如权利要求1所述的复合滤芯，其特征在于，所述内桶由ABS塑料或PP塑料制成。
  10. 一种净水设备，其特征在于，包括如权利要求1所述的复合滤芯。
  11. 如权利要求10所述的净水设备，其特征在于，所述内桶的第一开口周缘朝上设有呈环状的内桶接头，所述内桶接头上设有用于密封连接所述滤芯接头的密封结构。
  12. 如权利要求11所述的净水设备，其特征在于，所述密封结构包括凹设于所述内桶接头周面的密封环槽以及设于所述密封环槽内的密封连接件。
  13. 如权利要求12所述的净水设备，其特征在于，所述密封连接件为弹性密封圈。
  14. 如权利要求10所述的净水设备，其特征在于，所述内桶的下端与所述外桶的下壁呈间隔设置，所述第一滤材设于所述内桶的下端与所述外桶的下壁之间。
  15. 如权利要求14所述的净水设备，其特征在于，所述复合滤芯还包括：
    中心管；所述内桶的下端还设有连通于所述第一滤材内部空间的第二开口，所述中心管穿设第一开口和第二开口，以连通所述第一滤材的内部空间和所述滤芯接头。
  16. 如权利要求15所述的净水设备，其特征在于，所述复合滤芯还包括：
    分隔盘，呈环状设置；所述内桶为朝下敞口设置，所述内桶的敞口形成所述第二开口，所述分隔盘盖设于所述内桶的敞口处，所述中心管穿设所述分隔盘的内口和所述第一开口。
  17. 如权利要求10所述的净水设备，其特征在于，所述外桶为朝上敞口设置，所述滤芯接头盖合所述外桶的敞口。
  18. 如权利要求10所述的净水设备，其特征在于，所述内桶由ABS塑料或PP塑料制成。
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