WO2020088559A1 - 复合滤芯组件、前后置复合滤芯和净水机 - Google Patents

复合滤芯组件、前后置复合滤芯和净水机 Download PDF

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Publication number
WO2020088559A1
WO2020088559A1 PCT/CN2019/114557 CN2019114557W WO2020088559A1 WO 2020088559 A1 WO2020088559 A1 WO 2020088559A1 CN 2019114557 W CN2019114557 W CN 2019114557W WO 2020088559 A1 WO2020088559 A1 WO 2020088559A1
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WIPO (PCT)
Prior art keywords
filter element
flow channel
port
end cover
end cap
Prior art date
Application number
PCT/CN2019/114557
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English (en)
French (fr)
Inventor
李杨敏
桂鹏
郑跃东
高宏
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201811287556.8A external-priority patent/CN111115864A/zh
Priority claimed from CN201811289015.9A external-priority patent/CN111111290A/zh
Priority claimed from CN201821791610.8U external-priority patent/CN209307053U/zh
Priority claimed from CN201821786831.6U external-priority patent/CN209361983U/zh
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 WO2020088559A1 publication Critical patent/WO2020088559A1/zh

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    • 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
    • B01D29/56—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 series connection
    • B01D29/58—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 series connection arranged concentrically or coaxially

Definitions

  • This application relates to the technical field of water purification, in particular to a composite filter element assembly, front and rear composite filter elements and a water purifier.
  • the tap water transported from the city water plant to each user usually contains a certain amount of salt ions, metal substances, chlorides, microorganisms, sediment and other substances.
  • a water purifier In order to improve the quality of drinking water, more and more families choose to install a water purifier on the tap water outlet pipe.
  • the water purifier has a multi-function filter element to remove different types of harmful substances in the tap water.
  • the existing water purifier filter element is generally 3 to 4 grades, and some manufacturers of water purifier filter element are double core.
  • a variety of filter element assemblies are usually arranged in the water purifier, and the inlet and outlet ports of each filter element assembly are connected in series in sequence, and the inlet and outlet chambers are formed on both sides of the different filter elements.
  • Both the water outlet and the water inlet between the different filter element components need to be connected by external pipes, so that the composite filter element piping system is complicated and the water purifier
  • the whole machine occupies a large space, which is inconvenient to install and replace the filter element.
  • each filter element is separately made into a functional filter component. The installation and replacement of the entire filter element are complicated, occupying a large space, and high replacement cost, which reduces the user's core replacement experience.
  • This application aims to solve one of the technical problems in the related art at least to a certain extent.
  • an object of the present application is to propose a composite filter element assembly, which has a small volume and a good filtration effect.
  • the second purpose of this application is to propose a front and rear composite filter element.
  • the third object of the present application is to propose a water purifier including the above composite filter element assembly.
  • a composite filter element assembly includes: a housing, wherein a first accommodating cavity and a second accommodating cavity are defined in the housing, and the first accommodating cavity and the second accommodating cavity are separated by a transition plate Open, the transition plate is provided with a transition port, the housing is provided with a first inlet, a second inlet, a third inlet and a fourth inlet; a first filter element, the first filter element Set in the first accommodating cavity, a first uniform flow channel is defined between the first filter element and the inner wall of the first accommodating cavity, the first uniform flow channel and the first inlet The outlet is connected; a second filter element, the second filter element is provided in the first accommodating cavity; a waterway partition plate, the waterway partition plate is spaced between the first filter element and the second filter element , A second uniformly distributed flow channel is defined between the waterway partition plate and the first filter element, a third uniformly distributed flow channel is defined between the waterway partition plate and the second filter element, the first The second filter element is provided with a fourth uniform distribution channel
  • the composite filter element assembly of the embodiment of the present application three sets of filter elements are integrated and installed therein, and the filtering functions are diversified, which ensures the final filtering effect of the tap water.
  • the high integration and small overall volume greatly reduce the space required for installation.
  • the third filter element in the second accommodating cavity forms a series relationship with the second filter element in the first accommodating cavity through the transition port, and there is no need to arrange an external connecting pipeline, which saves material cost and space to a certain extent. It can be seen from the arrangement of the uniformly distributed flow channels on both sides of each filter element that the filtered water flow has a short path and a large circulation.
  • the first filter element, the waterway partition plate, and the second filter element are in the form of a sleeve sleeved in sequence, and the central cavity of the second filter element is the fourth uniform flow channel.
  • the composite filter element assembly further includes: a first inner end cover, the first inner end cover is fitted on an axial end surface of the second filter element facing the transition port to block the second The filter element and the fourth uniform distribution channel.
  • the composite filter element assembly further includes: a first outer end cover, the first outer end cover is fitted on an axial end surface of the first filter element facing the transition port, and the waterway partition plate is connected at The first outer end cover is used to block the first filter element and the second uniform flow channel.
  • a first cannula is provided on the first outer end cap, the first cannula is inserted into the transition port, and the first cannula is tightly fitted with the inner wall of the transition port .
  • the transition port is directly opposite to the first inner end cap, and the first inner end cap contacts the first outer end cap when subjected to a force toward the first outer end cap When the inlet of the transition port squeezes the first inner end cover, it communicates with the third uniform flow channel.
  • the waterway partition plate and the first outer end cover are an integrally formed piece.
  • the composite filter element assembly further includes: a second inner end cover and a second outer end cover, the second inner end cover is fitted on an axial end surface of the second filter element away from the transition port, to Blocking the second filter, the second inner end cover is provided with an inner port communicating with the third inlet and outlet, the inner port communicates with the third uniform flow channel, and the second outer end The cover is fitted on the axial end surface of the first filter element away from the transition port to block the first filter element, and the second outer end cover is provided with an outer port which is sheathed on the inner port .
  • a first connection pipe and a second connection pipe are provided on the inner peripheral wall of the housing, the inner port of the second inner end cover is plug-connected to the first connection pipe, and the second outer end The external port of the cover is plug-connected with the second connecting pipe.
  • a third connecting pipe is provided on the inner peripheral wall of the housing, and a second middle end cover is also provided in the first accommodating cavity, and the second middle end cover is fitted on the peripheral wall of the waterway partition plate
  • the second middle end cap is provided with a middle port which is sheathed on the inner port, the middle port of the second middle end cap is plug-connected with the third connecting pipe, and the second outer end
  • the outer port is defined between the cover and the second middle end cover, and the outer port communicates with the second uniform flow channel.
  • the second middle end cap contacts the second outer end cap and seals the outer port when subjected to a force toward the second outer end cap, when the second uniformly distributed
  • the water flow in the flow channel communicates with the outer port when the second middle end cover is squeezed open.
  • the first filter element is a roll made of non-woven fabric, polypropylene layer, and carbon fiber.
  • the third filter element is formed in a cylindrical shape, a fifth uniform distribution channel is defined between the third filter element and the inner wall of the second accommodating cavity, and the fourth inlet and outlet communicate with the The fifth evenly distributed flow channel, and the center of the third filter element is directly opposite to the transition port.
  • a fifth inlet and outlet are provided on the casing, the composite filter element assembly further includes a reverse osmosis membrane element, and the reverse osmosis membrane element includes: a central tube group and a plurality of reverse osmosis membrane sheet bags, the The central tube group includes a central tube and a plurality of spaced-apart wastewater headers, and a plurality of the wastewater headers are arranged around the central tube, and the wall of the central tube is provided with filtered water inlet holes, and the wastewater collector The wall of the tube is provided with a waste water inlet; the reverse osmosis membrane bag has a first part located inside the central tube group and a second part located outside the central tube group, each of the waste water headers and The central tube is separated by at least one first portion of the reverse osmosis membrane bag, and the second portions of the plurality of reverse osmosis membrane bags form a multi-layer membrane assembly surrounding the central tube group ; Wherein the multi-layer membrane module constitutes the third filter element
  • the composite filter element assembly further includes: a third end cover, the third end cover is fitted on an end surface of the reverse osmosis membrane element facing the transition port, and both ends of the third end cover are provided There are a second cannula and a third cannula communicating with each other, the second cannula is inserted in the transition port, the third cannula is connected with the central tube; the fourth end cap, the fourth end The cover is fitted on the end surface of the reverse osmosis membrane element away from the transition port, and the fourth end cover is provided with waste discharge ports respectively connected to the wastewater header and the fifth inlet and outlet.
  • a fourth connection pipe is provided on the inner peripheral wall of the housing, the fourth connection pipe communicates with the fifth inlet and outlet, and a fourth insertion pipe is provided on the fourth end cover, and the fourth insertion pipe The tube is plug-connected with the fourth connection tube.
  • the spacer bracket is provided in the second uniform flow channel, the spacer bracket is cylindrical and grid-shaped, and the spacer bracket is sleeved outside the waterway partition plate .
  • the front-rear composite filter element includes: a second filter element, the second filter element is formed in a cylindrical shape, and a fourth uniform flow channel is defined in the second filter element; the first filter element, The first filter element is formed in a cylindrical shape, the first filter element is sleeved on the outer side of the second filter element; the waterway partition plate, the waterway spacer plate is sleeved on the second filter element and the first Between the filter elements, a third uniform flow channel is defined between the water channel partition plate and the second filter element, and a second uniform flow channel is defined between the water channel partition plate and the first filter element , The third uniform flow channel and the second uniform flow channel are separated by the waterway partition plate; an end cover assembly, the end cover assembly is fitted at both ends of the first filter, The end cover assembly is provided with an inner port communicating with the fourth uniform flow channel, a transition port communicating with the third uniform flow channel, and an outer port communicating with the second uniform flow channel.
  • the second filter element is sleeved in the first filter element, but the flow path between the two is separated by the waterway partition plate, and the two filter elements will not interfere with each other when working,
  • the total space occupied by the two filter elements is approximately the space occupied by the first filter element, eliminating the need for external installation space that is required when installing the second filter element.
  • the two filter elements are integrated into one body, and the end cover assemblies at both ends can isolate the inlet and outlet ports of each filter element, control the inlet and outlet directions of each filter element, and also facilitate the replacement of one filter element separately.
  • the front and rear composite filter elements use the end cover assembly to support the axial ends and install them, and the waterway spacers are used to form two different purified water channels.
  • the front and rear composite filter elements can be integrally disassembled and assembled through the end cover assembly. Convenient.
  • This front and rear composite filter element realizes the integrated design of small volume and large flux, which not only realizes the reduction of the size of the whole machine, but for the user, the integrated core replacement improves the user core replacement experience and reduces the user core replacement cost At the same time, it has obvious help to the manufacturing process of the whole machine.
  • the front-rear composite filter element further includes: a spacer bracket, and the spacer bracket is disposed in the second uniform flow channel.
  • the spacing bracket is cylindrical and grid-shaped, and the spacing bracket is sleeved on the outside of the waterway partition plate.
  • the end cap assembly includes: a first inner end cap and a first outer end cap, the first inner end cap is fitted at one end of the second filter element and closes the fourth uniform flow channel , The first outer end cover is fitted on the first filter element and connected with the waterway partition plate, and the first outer end cover is provided with the transition port.
  • the transition port is directly opposite to the first inner end cap, and the first inner end cap contacts the first outer end cap when subjected to a force toward the first outer end cap When the inlet of the transition port squeezes the first inner end cover, it communicates with the third uniform flow channel.
  • the waterway partition plate and the first outer end cover are an integrally formed piece.
  • the end cap assembly includes: a second inner end cap and a second outer end cap, the second inner end cap is fitted on the second filter element, and the second inner end cap is provided with For the inner port, the second outer end cover is provided with the outer port over the inner port.
  • the end cover assembly includes: a second middle end cover, the second middle end cover is fitted on the waterway partition plate, and between the second outer end cover and the second middle end cover The external port is defined.
  • the second middle end cap contacts the second outer end cap and seals the outer port when subjected to a force toward the second outer end cap, when the second uniformly distributed
  • the water flow in the flow channel communicates with the outer port when the second middle end cover is squeezed open.
  • the first filter element is a roll made of non-woven fabric, polypropylene layer, and carbon fiber.
  • the water purifier according to the embodiment of the present application includes the composite filter element assembly described in any one of the above.
  • an integrated composite filter element assembly is adopted, which reduces the size of the whole machine, occupies less space, is easy to install, and simplifies the flow path.
  • Integrated compounding is the future development trend of water purifiers.
  • the integrated core replacement also improves the user's core replacement experience, reduces the user's core replacement cost, and simplifies the manufacturing process of the whole machine.
  • FIG. 1 is a schematic diagram of the overall structure of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the internal structure of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 3 is a top view of FIG. 2.
  • FIG. 4 is a bottom view of FIG. 2.
  • FIG. 5 is a schematic view of the internal structure of FIG. 2 omitting the first filter element, the second filter element, and the third filter element.
  • FIG. 6 is a top view of a third end cap according to an embodiment of the application.
  • FIG. 7 is a bottom view of a third end cap according to an embodiment of this application.
  • FIG 8 is a bottom view of a fourth end cap according to an embodiment of the application.
  • FIG. 9 is a top view of a fourth end cap according to an embodiment of the application.
  • FIG. 10 is a schematic diagram of a three-dimensional structure of a center pipe and a waste water header according to an embodiment of the present application.
  • FIG. 11 is a plan view of a reverse osmosis membrane bag, a central tube, and a waste water header in accordance with an embodiment of the present application.
  • FIG. 12 is a top view of a reverse osmosis membrane element in an embodiment of the present application.
  • FIG. 13 is a schematic structural view of the first filter element, the second filter element, and the waterway partition plate in the first accommodating cavity omitting the upper end cover.
  • FIG. 14 is a schematic structural view of the first filter element and the second filter element in the first accommodating cavity after removing the lower end cover.
  • 15 is a schematic diagram of the external structure of a front and rear composite filter element according to an embodiment of the present application.
  • 16 is a schematic diagram of a longitudinal cross-sectional structure of a front and rear composite filter element according to an embodiment of the present application.
  • 17 is a bottom view of the lower end cover assembly of FIG. 15.
  • FIG. 18 is a top view of the upper end cap assembly of FIG. 15.
  • FIG. 19 is a simplified schematic diagram of a water purifier and a composite filter element assembly according to an embodiment of the present application.
  • the third import and export 201 The third import and export 201;
  • the second accommodating cavity 200 is formed from
  • the third filter 30 the fifth uniform flow channel 31; the filter membrane 32; the central tube 33; the wastewater header 34;
  • Third end cap 47 second cannula 471; third cannula 472; first positioning protrusion 473; first assembly positioning structure 474;
  • First bottle cap 310 first takeover 311; second takeover 312; third takeover 313;
  • Bottle 330 transition plate 331; transition port 332;
  • the composite filter element assembly 1000 includes a housing 300, a first filter element 10, a second filter element 20, a waterway partition plate 46, and a third filter element 30.
  • the housing 300 defines a first receiving cavity 100 and a second receiving cavity 200.
  • the first receiving cavity 100 and the second receiving cavity 200 are separated by a transition plate 331.
  • the transition plate 331 is provided with a transition port 332.
  • the transition plate 331 makes the first accommodating cavity 100 and the second accommodating cavity 200 form two generally spaced apart cavities in the housing 300, and the two cavities communicate only through the transition port 332.
  • the housing 300 is provided with a first inlet 101, a second inlet 102, a third inlet 201, and a fourth inlet 302.
  • the first filter element 10 is disposed in the first accommodating cavity 100, and a first uniform flow channel 11 is defined between the first filter element 10 and the inner wall of the first accommodating cavity 100, and the first uniform flow channel 11 and the first inlet Exit 101 is connected.
  • the liquid to be purified by the first filter element 10 may be evenly distributed in the first uniform flow channel 11, or the purified liquid of the first filter element 10 may be evenly distributed.
  • the second filter element 20 is provided in the first accommodating cavity 100, and the water channel partition plate 46 is spaced between the first filter element 10 and the second filter element 20.
  • the water channel partition plate 46 separates the first filter 10 and the second filter 20 in the first accommodating chamber 100 to form two independent purified water channels.
  • Other filter elements can be connected between the two sets of filter elements; the water inlet of the first filter element 10 and the water outlet of the second filter element 20 can also be directly connected, or the water outlet of the first filter element 10 and the second filter can be directly connected
  • the water inlets of the member 20 are connected, so that the purified water path between the first filter member 10 and the second filter member 20 forms a front-to-rear series relationship.
  • a second uniform flow channel 12 is defined between the waterway partition plate 46 and the first filter 10.
  • the liquid to be purified of the first filter 10 is uniformly distributed in the first uniform flow channel 11
  • the liquid after the purification of the first filter 10 is uniformly distributed in the second uniform distribution channel 12; .
  • the second uniform flow channel 12 is connected to the second inlet and outlet 102. That is, when the first import and export 101 is an import, the second import and export 102 is an export; when the first import and export 101 is an export, the second import and export 102 is an import.
  • a third uniformly distributed flow channel 21 is defined between the waterway partition plate 46 and the second filter element 20.
  • a fourth uniformly distributed flow channel 22 is provided on the side of the second filter element 20 away from the third uniformly distributed flow channel 21.
  • One of the three uniform distribution channels 21 and the fourth uniform distribution channel 22 is connected to the third inlet and outlet 201, and the other of the third uniform distribution channel 21 and the fourth uniform distribution channel 22 is connected to the transition port 332.
  • the fourth uniform distribution channel 22 is connected to the third inlet 201; when the third uniform distribution channel 21 is connected to the third inlet 201, the fourth The uniform flow channel 22 is connected to the transition port 332.
  • the third filter 30 is provided in the second receiving chamber 200.
  • the third filter element 30 can further increase the overall filtering function of the composite filter element assembly 1000 to improve the quality of the water.
  • the degree of integration is high and the structure is compact, which is beneficial to reduce the size of the structure, the filtration function is diversified, and the preliminary filtration can be formed separately , Re-filtering, final filtering, at the same time to filter out different impurities, high filtration efficiency, to ensure the overall filtration effect of the composite filter assembly 1000.
  • a set of filter elements is provided in the housing, and each filter filter element is connected by an external pipeline. This application reduces the installation of external connection pipelines to a certain extent, thereby reducing the external required for installation Space, save the internal volume of the user's cabinet; at the same time, enhance the overall aesthetic performance.
  • the first accommodating chamber 100 and the second accommodating chamber 200 are spaced apart in the axial direction, and one of the uniformly distributed flow channels on both sides of the second filter element 20 communicates with the second accommodating chamber 200 through the transition port 332 on the transition plate 331.
  • the cavity (100, 200) is compact, which saves the external connection pipes that need to be laid when the filtered water of the third filter element 30 flows to the second filter element 20; it can also be saved by the second filter element 20
  • the water flow passes through the first filter 10 and the second
  • the filter member 20 When the filter member 20 is used, most of it passes through in the radial direction of the first accommodating chamber 100, and the passing path is short and the flow volume is large. In addition, it has a flushing effect on the impurities on the surface of the filter when passing radially, and the water flow is more likely to wash away the impurities and then pass through the filter.
  • each filter element Most of the water flow of each filter element flows in the axial direction when entering and leaving the water, which is not only conducive to the uniform distribution of the water flow, but also helps to bring the impurities under scouring to the axial end and avoid the impurities from being blocked on the surface of the filter element.
  • the present application has a higher degree of integration and stronger functions.
  • it is only necessary to disassemble the different ends of the housing 300 and the corresponding end caps of each filter element, and the corresponding filter element can be replaced.
  • the replacement is simple and easy to operate, which provides the possibility for the customer to perform the replacement in person. Reduced maintenance costs.
  • the composite filter element assembly 1000 needs only one set of positioning and installation structure for overall installation, which is simple and time-saving to assemble.
  • the inner cavity of the housing is divided into a first accommodating cavity 100 and a second accommodating cavity 200 by a transition plate 331, and its design can also meet the requirements of different filtering structures on water pressure.
  • the filtration resistance in the first accommodating cavity 100 is small, so the first accommodating cavity 100 is designed as a low-pressure cavity, so that the water purification system does not need to configure a booster pump for the first accommodating cavity 100, the internal parts of the first accommodating cavity 100 and the corresponding joint
  • the pressure is small, and the reliability of parts assembly sealing is low.
  • the resistance to filtration and circulation in the second accommodating chamber 200 is large.
  • a booster pump can be separately configured for the second accommodating chamber 200, and at the same time, the pressure-bearing capacity of the internal parts of the second accommodating chamber 200 and the corresponding nozzles must be guaranteed. Setting them separately in this way helps to reduce costs.
  • the housing 300 includes: a bottle body 330 and two bottle caps, both ends of the bottle body 330 are open, and the two bottle caps are fitted on the bottle body 330 At both ends, each bottle cap can be detachably sealed and connected to the bottle body 330.
  • the detachable connection may be a threaded connection, that is, one end of the bottle body 330 and the bottle cap are provided with an external thread, and the other is provided with a matching internal thread.
  • a snap connection that is, a buckle is provided at the end of the bottle body 330, and the first bottle cap 310 and the second bottle cap 320 at both ends of the bottle body 330 are provided with clip holes, so that the bottle body 330 and the first bottle cap 310, The second bottle caps 320 respectively form a snap relationship.
  • other easily detachable connection methods that can be thought of can also be used in this application, which is not limited here.
  • the transition plate 331 has a transition hole 332 penetrating in the thickness direction at the center.
  • the transition plate 331 and the bottle body 330 are integrally injection molded, which is convenient for manufacturing and manufacturing, and the sealed connection between the transition plate 331 and the bottle body 330 is very reliable In order to avoid deflection and water leakage of the transition plate 331 in the bottle body 330 when subjected to force impact or excessive pressure difference between the two sides.
  • the transition plate 331 can also be welded to the bottle body 330, which is not limited here.
  • the first filter element 10, the waterway partition plate 46 and the second filter element 20 are in the shape of a cylinder sleeved in turn, and the central cavity of the second filter element 20 ⁇ ⁇ average distribution channel 22.
  • the fourth uniform flow channel 22 is at the center of the first accommodating cavity 100 and is cylindrical.
  • the outer side of the fourth uniform flow channel 22 is arranged with a layer of second filter element 20, a layer of third uniform distribution channel 21, a layer of waterway partition plate 46, and a layer of second uniform distribution channel in the radial direction 12.
  • a layer of the first filter element 10, a layer of the first uniform flow channel 11, the third uniform flow channel 21 and the second uniform flow channel 12 are separated from each other by a waterway partition plate 46 and do not circulate.
  • the first accommodating cavity 100 has a compact overall arrangement, occupies less installation space, and has a high degree of integration. It is convenient to install the first filter element 10 and the second filter element 20.
  • the composite filter element assembly 1000 further includes: a first inner end cover 41 that is fitted in the axial direction of the second filter element 20 toward the transition port 332 On the end surface, the second filter element 20 and the fourth uniform flow channel 22 are blocked.
  • the first inner end cover 41 blocks the second filter element 20 and the fourth uniform flow channel 22, which means that the first inner end cover 41 seals the second filter element 20 and the fourth uniform flow channel 22
  • the axial end face of the second filter element 20 and the fourth uniform flow channel 22 cannot flow out or flow in from the axial end face toward the transition port 332.
  • the first inner end cover 41 closes the bottoms of the second filter element 20 and the fourth uniform flow channel 22, and provides bottom support for the second filter element 20, effectively preventing the second filter element
  • the liquid to be purified on both sides of 20 and the liquid after purification are connected in series at the bottom to ensure the filtering effect of the second filter 20.
  • the first inner end cover 41 is provided with a first flange 412 extending into the fourth uniform flow channel 22, the outer surface of the first flange 412 and the second filter element 20 inner surface contact.
  • the first flange 412 further enhances the connection between the first inner end cover 41 and the second filter 20, preventing the liquid in the fourth uniform flow channel 22 from penetrating outward from the bottom of the second filter 20.
  • the outer periphery of the first inner end cover 41 is provided with an upward first flange 411, and the inner side of the first flange 411 contacts the outer peripheral surface of the second filter 20.
  • the first flanging 411 makes the connection between the first inner end cover 41 and the second filter 20 tighter, increases the reliability of the connection, and further prevents the fluid in the third uniform flow channel 21 from the second filter 20 The bottom of the flowed into the fourth uniform flow channel 22, to ensure the filtering effect of the second filter 20.
  • first flange 412 and the first flange 411 can enhance the liquid blocking effect of the first inner end cover 41 on the end surfaces of the fourth uniform flow channel 22 and the second filter 20; It forms a foolproof fit for the first inner end cover 41 and the second filter element 20 and is easy to assemble.
  • the axial end surface of the second filter 20 is glued to the first inner end cover 41, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the second filter element 20 is sealingly connected to the first inner end cover 41 by a ring of hot melt adhesive.
  • the composite filter element assembly 1000 further includes: a first outer end cover 42 that fits in the transition opening 332 of the first filter 10 On the axial end surface, the waterway partition plate 46 is connected to the first outer end cover 42 to block the first filter element 10 and the second uniform flow channel 12.
  • the first outer end cover 42 closes the bottoms of the first filter element 10 and the second uniform flow channel 12 and provides support for the first filter element 10, effectively preventing the first filter element 10 from The liquid to be purified on the side and the liquid that has been purified are connected in series at the bottom, ensuring the filtering effect of the first filter 10.
  • the waterway partition plate 46 is connected to the first outer end cover 42, which is conducive to the first outer end cover 42 being securely arranged at a specific position, so that the second uniform distribution flow channel 12 and the third uniform distribution flow channel 21 can be reliably separated. Avoid cross-flow of the liquid in the first filter element 10 and the second filter element 20, and reduce the water quality in each uniformly distributed flow path.
  • the first outer end cover 42 is provided with a first groove 424, and the first filter 10 and the bottom of the spacer 49 are fitted in the first groove 424.
  • the outer peripheral surface of the first filter 10 is attached to the peripheral surface of the first groove 424
  • the inner peripheral surface of the spacer 49 is attached to the peripheral surface of the first groove 424
  • the bottom surface of the first filter 10 and the spacer 49 It fits with the groove surface of the first groove 424.
  • the arrangement of the first groove 424 facilitates the fixed installation of the first filter element 10 and the spacer bracket 49, and further increases the connection between the first filter element 10, the spacer bracket 49 and the first outer end cover 42, ensuring the first There is no cross-flow between the fluid outside the filter element 10 and different water channels in the second uniform flow channel 12, which ensures the filtration performance of the first filter element 10.
  • the waterway partition plate 46 and the first outer end cover 42 are an integrally formed piece.
  • One-piece molding is convenient for processing and manufacturing. After the integral molding, the gap between the waterway partition plate 46 and the first outer end cover 42 is less likely to occur, and the position is relatively stable.
  • the one-piece molding is also convenient for assembly, and after long-term use, it is not easy for cross-flow between the third uniformly distributed flow channel 21 and the second uniformly distributed flow channel 12.
  • the second filter element 20 and the first filter element 10 can play a good supporting role.
  • a middle portion of the first outer end cover 42 protrudes upward to form a boss 422, and the first inner end cover 41 is suspended above the boss 422. That is, there is a certain gap between the first inner end cover 41 and the boss 422, so that the third uniform flow channel 21 and the transition port 332 communicate under appropriate conditions, so that the second filter element 20 and the third filter element 30
  • the purified water channels are connected in series. That is to say, the water filtered by the second filter element 20 can flow to the third filter element 30 through the transition port 332 and be filtered again by the third filter element 30; or, the water filtered by the third filter element 30 can flow to the third filter element 30 through the transition port 332
  • the second filter 20 is filtered by the second filter 20 again.
  • a lower portion of the boss 422 extends downward to form a first external interface 423, and a transition port 332 is formed in the first external interface 423.
  • the first external interface 423 here can be used to connect an external pipe or other filter element assembly, and the length of the first external interface 423 here can be designed according to needs.
  • a seal 50 is provided on the first outer interface 423 to separate the fluid entering the inner port 120 from the fluid in other external channels.
  • the outer periphery of the first outer end cover 42 is provided with a third flange 425.
  • the inner side of the third flange 425 is in contact with the outer periphery of the first filter 10.
  • the third flange 425 is coated on the outer side of the middle boss 422 of the first outer end cover 42.
  • the third flange 425 is blocked from both sides of the middle boss 422, which can enhance the first outer end 42 to filter the first The liquid blocking effect of the end surface of the member 10; and can form a foolproof fit for the first filter member 10, and is easy to assemble.
  • the end surface of the first filter element 10 is glued to the first outer end cover 42, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the first filter element 10 is sealingly connected to the first outer end cover 42 by a ring of hot melt adhesive.
  • a first cannula 421 is provided on the first outer end cover 42, the first cannula 421 is inserted into the transition port 332, and the first cannula 421 is connected to the transition The inner walls of the port 332 are tightly fitted.
  • the first cannula 421 is inserted into the transition port 332.
  • the transition port 332 is further closed to prevent unnecessary liquid flow between the first containing chamber 100 and the second containing chamber 200; on the other hand, the The flow channel connection between the second filter element 20 and the third filter element 30 is easier.
  • the first cannula 421 and the first inner end cap 41 are coaxially disposed, the inner diameter of the first cannula 421 is smaller than the outer diameter of the first inner end cap 41, so that the first inner end cap 41 and the second filter 20 Blocked in the first outer end cover 42.
  • the gap between the first inner end cover 41 and the first outer end cover 42 is small, and the first inner end cover 41 is in contact with the first outer end cover 42 when subjected to a force toward the first outer end cover 42 In contact, when the transition port 332 enters the water and squeezes the first inner end cover 41, the gap becomes larger, and the water channel is more smoothly circulated.
  • the first inner end cover 41 is arranged in a suspension design at a small distance from the first outer end cover 42, so that the water pressure can reach a delicate balance when the water flows through the second filter 20. That is, when the water pressure in the fourth uniform flow channel 22 is greater than the water pressure at the transition port 332, the first inner end cover 41 can temporarily seal the transition port 332.
  • the composite filter element assembly 1000 further includes: a second inner end cover 43 and a second outer end cover 44.
  • the second inner end cap 43 is fitted on the axial end surface of the second filter element 20 away from the transition port 332 to block the second filter element 20, and the second inner end cap 43 is provided with a third inlet 201 The internal port 431.
  • the second inner end cover 43 closes the top of the second filter element 20, and provides the top connection for the second filter element 20, provides a direction for the third inlet and outlet 201, and effectively prevents the second filter element 20
  • the liquid to be purified on both sides is in series with the liquid after purification on the top, which further ensures the filtering effect of the second filter 20.
  • the fluid filtered by the second filter 20 collects in the fourth uniform flow channel 22 and is discharged outward through the inner port 431.
  • the aforementioned transition port 332 is disposed directly opposite the first inner end cover 41, and the first inner end cover 41 contacts the first outer end cover 42 when subjected to a force toward the first outer end cover 42, When the transition port 332 enters the water and squeezes away the first inner end cover 41, it communicates with the third uniform flow channel 21.
  • the transition port 332 provides an inlet for the fluid to be purified of the second filter element 20 to facilitate the fluid to be purified to enter the third uniform flow channel 21.
  • the first inner end cover 41 and the first outer end cover 42 are not stably connected, and only when the first inner end cover 41 is subjected to a squeezing force toward the first outer end cover 42 Will be in close contact. When the first inner end cover 41 is pressed away from the first outer end cover 42, a gap will be formed between the two, and the fluid will enter the third uniform flow channel 21 from the transition port 332.
  • the periphery of the second inner end cover 43 is provided with a downward second flange 433.
  • the inner side of the second flange 433 is in contact with the outer peripheral surface of the second filter 20.
  • the second flanging 433 makes the connection between the second inner end cap 43 and the second filter 20 tighter, increases the reliability of the connection, and further prevents the fluid in the third uniform flow channel 21 from the second filter 20 The top of the flowed into the fourth uniform flow channel 22, to ensure the filtering effect of the second filter 20.
  • the second inner end cover 43 is provided with a second flange 434 extending into the fourth uniform flow channel 22.
  • the outer peripheral surface of the second flange 434 and the inner periphery of the second filter 20 Face contact.
  • the second flange 434 further enhances the connection between the second inner end cap 43 and the second filter element 20, preventing the liquid in the fourth uniform flow channel 22 from penetrating outward from the top of the second filter element 20.
  • the same arrangement of the second flange 434 and the second flange 433 makes the connection between the second inner end cover 43 and the second filter 20 tighter, and increases the reliability of the connection. Both of them can enhance the liquid blocking effect of the second inner end cover 43 on the end surface of the second filter 20, and can form a foolproof fit for the second inner end cover 43, which is easy to assemble.
  • the axial end surface of the second filter element 20 is glued to the second inner end cover 43, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the second filter element 20 is sealingly connected to the second inner end cover 43 by a ring of hot melt adhesive.
  • the second outer end cap 44 is fitted on the axial end surface of the first filter element 10 away from the transition port 332 to block the first filter element 10, and the second outer end cap 44 is provided with an outer port that covers the inner port 431 441.
  • the second outer end cap 44 closes the tops of the first filter element 10 and the second uniform flow channel 12, and provides a connection for the first filter element 10, which is the first inlet 101 and the second inlet 102
  • the separation is performed to effectively prevent the liquid to be purified on both sides of the first filter element 10 and the purified liquid from intersecting at the top, further ensuring the filtering effect of the first filter element 10.
  • the second outer end cover 44 is provided with a second groove 443, and the tops of the first filter element 10 and the space bracket 49 are fitted in the second groove 443.
  • the outer circumferential surface of the first filter 10 is in contact with the outer circumferential surface of the second groove 443, the outer circumferential surface of the spacer 49 is in contact with the inner circumferential surface of the second groove 443, the first filter 10 and the spacer 49
  • the top surface of the is in close contact with the groove surface of the second groove 443.
  • the arrangement of the second groove 443 further increases the connection between the first filter element 10 and the spacing bracket 49 and the second outer end cover 44 to ensure that the fluid outside the first filter element 10 and the second uniform flow channel 12 There is no cross-flow between different water qualities in the medium, which ensures the filtering performance of the first filter element 10.
  • the middle of the second outer end cap 44 protrudes upward to form a second outer interface 444, and the middle of the second inner end cap 43 extends upward to form an inner port 431.
  • the top of the inner port 431 is connected to the second The top of the outer interface 444 is flush, and the inner port 431 and the second outer interface 444 are spaced apart in the radial direction.
  • the middle port 451 is provided in the reserved space between the second outer interface 444 and the inner port 431 which are spaced apart in the radial direction. The top is flush to facilitate final assembly.
  • a seal 50 is provided on the second external interface 444 to separate the fluid to be filtered from the fluid filtered by the first filter 10.
  • the periphery of the second outer end cover 44 is provided with a downward burring edge, and the inner side of the burring edge is in contact with the outer circumferential surface of the first filter 10.
  • the setting of the outer flange makes the connection between the second outer end cover 44 and the first filter element 10 tighter, and increases the reliability of the connection. Both of them can enhance the liquid blocking effect of the second outer end cover 44 on the end surface of the first filter 10, and can form a foolproof fit for the first filter 10, which is easy to assemble.
  • the axial end surface of the first filter element 10 is glued to the second outer end cover 44, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the first filter element 10 is sealingly connected to the second outer end cover 44 by a ring of hot melt adhesive.
  • the inner peripheral wall of the housing 300 is provided with a first connection tube 311 and a second connection tube 312, and the inner port 431 of the second inner end cover 43 is plug-connected with the first connection tube 311, the first The outer port 441 of the second outer end cap 44 is plug-in connected with the second connecting tube 312.
  • This plug-in connection assembly method makes it easy to fix the first filter element 10 and the second filter element 20 in the housing 300.
  • first filter element 10 is inserted into the transition port 332 through the first outer end cover 42, and the other end of the first filter element 10 is inserted into the second connection tube 312 through the second outer end cover 44
  • the position of the first filter element 10 is basically fixed, and the step of assembling is only the process of inserting at both ends, which shows that the assembly is very simple and time-saving.
  • both ends of the first filter 10 will not come out, which shows that the assembly reliability of the first filter 10 is high.
  • One end of the second filter element 20 is inserted into the first connecting tube 311 through the second inner end cap 43, the other end of the second filter element 20 is sealed by the first inner end cap 41, and the first inner end cap 41 and The interval between the first outer end caps 42 is very small, which is equivalent to that the other end of the second filter element 20 is held by the first outer end cap 42.
  • the position of the second filter element 20 is also substantially fixed, and the step of assembling is only the process of inserting at one end, which shows that its assembly is very simple and time-saving.
  • both ends of the second filter 20 will not come out, which shows that the assembly reliability of the second filter 20 is high.
  • a fifth insertion tube 432 is formed on the second inner end cover 43, and the nozzle of the fifth insertion tube 432 forms the above-mentioned inner port 431, and the inner port 431 communicates with the fourth uniform flow channel 22.
  • the fifth insertion tube 432 may be inserted into the first connection tube 311, and the fifth insertion tube 432 may also be inserted outside the first connection tube 311.
  • a sealing ring is provided between the fifth insertion tube 432 and the first connecting tube 311.
  • a sixth cannula 442 is formed on the second outer end cap 44, and the nozzle of the sixth cannula 442 forms the aforementioned outer port 441.
  • the sixth insertion tube 442 may be inserted into the second connection tube 312, and the sixth insertion tube 442 may also be inserted outside the second connection tube 312.
  • a sealing ring is provided between the sixth insertion tube 442 and the second connecting tube 312.
  • a third connecting tube 313 is provided on the inner peripheral wall of the housing 300, and a second middle end cap 45 is also provided in the first accommodating cavity 100, and the second middle end cap 45 is fitted in the waterway
  • a middle port 451 of the inner port 431 is provided on the second middle end cap 45, and the middle port 451 of the second middle end cap 45 is plug-connected with the third connecting tube 313.
  • the second middle end cap 45 may not be provided, so that the waterway partition plate 46 may be directly connected to the third connecting pipe 313, which saves the number of parts.
  • the second filter 20 since the second filter 20 is to be assembled inside the waterway partition 46, the opening of the waterway partition 46 is too small to fit in, and the large opening of the waterway partition 46 will affect the second outer end cap 44 and the first filter The assembly of 10 makes the overall assembly more difficult.
  • a second middle end cover 45 When assembling, first install the second filter 20 and other parts into the waterway partition plate 46, and then connect the second middle end cover 45 to the waterway partition plate 46, then the assembly is satisfied Need to improve the reliability of the overall assembly.
  • the waterway partition plate 46 is integrally formed with the first outer end cover 42, it can be manufactured by one-piece injection molding. At this time, in order to facilitate mold opening, it is not appropriate to integrally inject the second middle end cover 45.
  • a third connecting tube 313 is provided on the housing 300, and the third connecting tube 313 is plug-connected to the middle port 451.
  • the step of fixing the end of the waterway partition 46 is only a plug-in process.
  • the assembly is very simple, saves time, and has high reliability.
  • a seventh cannula 452 is formed on the second middle end cap 45, and the nozzle of the seventh cannula 452 forms the aforementioned middle port 451.
  • the seventh cannula 452 can be inserted into the third connection 313, and the seventh cannula 452 can also be inserted outside the third connection 313.
  • a sealing ring is provided between the seventh insertion tube 452 and the third connecting tube 313, and a sealing ring is also provided between the second middle end cap 45 and the waterway partition plate 46.
  • the distance between the second middle end cap 45 and the second outer end cap 44 is small, so that the water pressure can reach a delicate balance when the water flows through the first filter 10. That is, when the inner water pressure of the waterway partition plate 46 is greater than the outer water pressure, the second middle end cap 45 may be squeezed on the second outer end cap 44 to slow down the filtering speed of the first filter 10. During normal operation, the water flow squeezes away the second middle end cap 45 and normally flows toward the second inlet and outlet 102.
  • all the parts in the first accommodating cavity 100 are pre-assembled into an integral piece, that is, the first filter element 10, the second filter element 20, the first inner end cap 41, the first outer end cap 42, the second inner The end cap 43, the second outer end cap 44, and the second middle end cap 45 are connected in advance to form an integrated front and rear composite filter element 400.
  • Even the seals at the first connection 311, the second connection 312, and the third connection 313 may be pre-assembled to the fifth insertion tube 432, the sixth insertion tube 442, and the seventh insertion tube 452.
  • Such an integrated front and rear composite filter element 400 can be directly inserted between the transition plate 331 and the first bottle cap 310 during assembly, and the assembly process of the whole machine is greatly simplified. Moreover, if the first bottle cap 310 is detachably connected to the bottle body 330, the user can also replace the integrated front and rear composite filter cartridge 400 after use, and the operation procedure when the user replaces it is also very easy and improves The user's core replacement experience reduces core replacement costs.
  • the tops of the second middle end cap 45, the second inner end cap 43, and the second outer end cap 44 are flush. It is advantageous for the first bottle cap 310 to seal the top of the first receiving cavity 100.
  • the third filter element 30 is formed in a cylindrical shape, and a fifth uniform flow channel 31 is defined between the third filter element 30 and the inner wall of the second receiving chamber 200,
  • the fourth inlet / outlet 302 communicates with the fifth uniform distribution channel 31, and the center of the third filter 30 is disposed directly opposite the transition port 332.
  • the inner and outer sides of the cylindrical third filter element 30 form different uniformly distributed flow channels, one is the fluid to be purified by the third filter element 30, and the other is the fluid after purification by the third filter element 30, of which The circulation cavity in the middle of the three filter elements 30 communicates with the transition port 332.
  • the composite filter element assembly 1000 further includes a central tube 33, which is disposed in the center of the third filter 30, and the wall of the central tube 33 is provided with filtered water inlet
  • the hole and the central tube 33 may be pure water filtered by the third filter 30.
  • the housing 300 is provided with a fifth inlet and outlet 301, and a waste water header 34 is provided in the center of the third filter element 30.
  • the waste water header 34 is connected to the fifth inlet and outlet 301, and the waste water is collected
  • the pipe 34 can discharge waste liquid having a high ion concentration.
  • the central tube 33, multiple wastewater headers 34, and the filtration membrane 32 constitute a reverse osmosis membrane element, which may be a spiral wound reverse osmosis membrane element, or other Roll reverse osmosis membrane element.
  • the following reverse osmosis membrane element will be described with a spiral wound reverse osmosis membrane element structure.
  • the filtration membrane 32 is a plurality of groups, and the filtration membrane 32 is a reverse osmosis membrane bag.
  • the reverse osmosis membrane bag has a first part and a second part.
  • Each wastewater header 34 and central tube 33 are separated by at least one reverse osmosis membrane bag.
  • a part is separated, and the second part of the plurality of reverse osmosis membrane bag is formed around the tube group composed of the central tube 33 and the plurality of waste water collecting pipes 34 to form a multi-layer membrane module.
  • the multi-layer membrane module is a cylinder rolled from a plurality of reverse osmosis membrane bag bags, and the cylinder constitutes the third filter 30 described above.
  • the water flowing into the fifth uniform flow channel 31 flows in the radial direction toward the central tube 33.
  • water molecules continuously permeate into the reverse osmosis membrane bag, and penetrate into the reverse osmosis membrane bag Part of the pure water continues to flow toward the center tube 33 in the radial direction, and partly flows toward the center tube 33 in the spiral direction due to the film extension direction.
  • the purified water enters the central tube 33 from the filtered water inlet hole, and then flows toward the transition port 332.
  • the water that has not penetrated into the reverse osmosis membrane bag is concentrated at the waste water collection pipe 34, and the remaining waste water flows to the waste water collection hole on the wall of the waste water collection pipe 34.
  • the waste water collection pipe 34 is connected to the fifth inlet 301 , Discharge the waste water from the fifth entrance 301.
  • the reverse osmosis membrane element adopts a lateral flow water-saving membrane.
  • the lateral flow enters the water to increase the flow rate of the membrane surface, ensure a higher recovery rate of pure water, and a longer service life of the membrane bag.
  • the third filter element 30 may also be an ultrafiltration membrane module, specifically, an ultrafiltration membrane filter element available on the market may be used.
  • an ultrafiltration membrane filter element available on the market may be used.
  • the principles and techniques of ultrafiltration filtration and reverse osmosis filtration are all well-known technologies known to those skilled in the art, and will not be repeated in this application.
  • the third filter 30 uses the above filter, the liquid needs to be pressurized in advance and then pumped into the fourth inlet 302.
  • the composite filter element assembly 1000 further includes: a third end cap 47 that is fitted on the third filter element 30 On the end surface facing the transition port 332, the two ends of the third end cap 47 are provided with a second cannula 471 and a third cannula 472, the second cannula 471 is inserted into the transition port 332, the third cannula 472 Connected to the central tube 33.
  • the third end cap 47 closes the top of the third filter 30 and provides a top support connection for the third filter 30, effectively preventing the liquid to be purified on both sides of the third filter 30 and the Liquids are tandem at the top.
  • the third end cap 47 is inserted into the transition port 332 through the second insertion tube 471, on the one hand, it is convenient to seal, and prevents the high-pressure water in the second accommodating chamber 200 from flowing to the transition port 332 without being filtered by the filter 32, on the other hand Using the transition port 332 for positioning improves the positioning accuracy while reducing the difficulty of assembly.
  • the third end cap 47 is inserted into the central tube 33 through the third insertion tube 472.
  • the surface contact between the third insertion tube 472 and the wall of the central tube 33 is used to achieve sealing, and on the other hand, the positioning of the central tube 33 is facilitated. With the installation, the center tube 33 is prevented from skewing and leaking after long-term use.
  • the third end cap 47 is provided with a first positioning protrusion 473, which is corresponding to the wastewater header 34, and one end of the wastewater header 34 is inserted in the first positioning protrusion On the 473, the first positioning protrusion 473 has a certain foolproof coordination function, which is convenient for the positioning and installation of the third end cap 47 and the waste water header 34, and prevents the waste water header 34 from skewing after long-term use.
  • a first assembly positioning structure 474 is provided on the peripheral wall of the third end cap 47, and a plurality of first assembly positioning structures 474 are spaced apart in the circumferential direction, and a plurality of first assemblies
  • the positioning structure 474 abuts against the inner wall of the housing 300 to increase the centering degree of the third filter 30 in the second accommodating cavity 200, so as to prevent the third filter 30 from being skewed as a whole and preventing the transition 332 from fitting well.
  • a sealing ring is provided between the second cannula 471 and the transition port 332.
  • the composite filter element assembly 1000 further includes: a fourth end cap 48 that is fitted on the third filter element 30 On the end surface away from the transition port 332, the fourth end cap 48 is provided with waste discharge ports 482 connected to the wastewater header 34 and the fifth inlet and outlet 301, respectively.
  • a second positioning protrusion 483 is protruded from the middle of the fourth end cover 48.
  • the second positioning protrusion 483 is corresponding to the central tube 33, and one end of the central tube 33 is inserted into the second positioning protrusion From 483, the second positioning protrusion 483 has a blocking function, and also has a certain foolproof coordination function, which facilitates the positioning and installation of the fourth end cap 48 and the central tube 33, prevents the central tube 33 from skewing and can be closed during long-term use
  • the lower portion of the center tube 33 prevents the liquid in the center tube 33 from flowing out.
  • a second assembly positioning structure 484 is provided on the peripheral wall of the fourth end cap 48, a plurality of second assembly positioning structures 484 are spaced apart along the circumferential direction, and a plurality of second assemblies
  • the positioning structure 484 abuts against the inner wall of the housing 300 to improve the centering of the third filter 30 in the second receiving chamber 200, and to prevent the third filter 30 from being skewed as a whole to prevent it from fitting well at the fifth inlet 301 .
  • the fourth end cap 48 closes the bottoms of the third filter 30 and the central tube 33, and provides bottom sealing and support for the third filter 30, effectively preventing both sides of the third filter 30
  • the liquid to be purified and the liquid that has been purified are connected in series at the bottom, ensuring the filtering effect of the third filter 30.
  • the waste water header 34 connects the waste discharge port 482 and the fifth inlet and outlet 301 so that the high-salinity waste water flows out of the housing 300 fast enough.
  • a fourth nozzle 321 is provided on the inner peripheral wall of the housing 300, and the fourth nozzle 321 and the fourth nozzle 321 are provided on the second bottle cap 320 in FIG. 5
  • a fourth insertion tube 481 is provided on the fourth end cap 48, and the fourth insertion tube 481 is connected to the fourth connection tube 321 in a plug connection.
  • the fourth insertion tube 481 is connected to the fourth connection tube 321 to ensure that there is no cross-flow between the high-concentration waste liquid and the liquid to be purified.
  • the fourth end cap 48 is stably connected to the bottom of the housing 300 to prevent the position of the third filter 30 from changing during the filtering process.
  • a sealing ring is provided between the fourth insertion tube 481 and the fourth connecting tube 321 to improve the sealing degree.
  • all the parts in the second accommodating chamber 200 are pre-assembled into one piece, that is, the central tube 33, the wastewater header 34, the filter membrane 32, the third end cap 47, and the fourth end cap 48 are pre-connected to be integrated Reverse osmosis filter. Even the sealing ring at the transition port 332 and the fourth connecting pipe 321 can be pre-assembled to the second cannula 471 and the fourth cannula 481.
  • Such an integrated reverse osmosis filter element can be directly inserted between the transition plate 331 and the second bottle cap 320 during assembly, and the assembly process of the whole machine is greatly simplified. Moreover, if the second bottle cap 320 is detachably connected to the bottle body 330, the user can also replace the integrated reverse osmosis filter after use, and the operation steps when the user replaces it are also very easy, which improves the user's Core replacement experience reduces core replacement cost.
  • the first accommodating chamber 100 is provided with a spacer bracket 49, and the spacer bracket 49 is disposed in the second uniform flow channel 12.
  • the spacing bracket 49 maintains the second uniform flow channel 12 with a specific width and a specific shape, ensuring good fluid circulation performance.
  • the spacer bracket 49 is provided between the inner peripheral surface of the first filter element 10 and the outer peripheral surface of the water channel partition plate 46, and can support the first filter element 10 and the water channel partition plate 46, respectively, to maintain a fixed relative distance between the two.
  • the second uniform flow channel 12 maintains a specific shape, ensures that the flow channel has a certain width, and ensures good fluid circulation performance.
  • the spacing bracket 49 is cylindrical and grid-shaped, and the spacing bracket 49 is sleeved on the outside of the waterway partition plate 46.
  • the grid-shaped spacing bracket 49 saves material and makes the supporting frame lighter, which is beneficial to the lightweight design of the filter element; facilitates the flow of fluid in the second uniform flow channel 12 and has low flow resistance; facilitates the installation and fixing of the spacing bracket 49 .
  • the spacer bracket 49 is rolled together with the first filter 10. The spacing bracket 49 can ensure the tightness and strength of the entire rolled first filter element 10.
  • the first filter element 10 is a roll made of non-woven fabric, polypropylene layer, and carbon fiber, and has a long service life. When used in the filtration of tap water, it can initially remove sediment, rust and residual chlorine.
  • the first filter element 10 may also be formed by rolling only one or two materials of the filter layer, which is not specifically limited here.
  • the second filter 20 is a hollow carbon rod. It can be used for the final filtration of tap water.
  • the carbon rod can filter out the odor, organic matter, colloid, iron and residual chlorine in the water body, so that the second filter 20 controls the drinking water quality conditions after the water is discharged, and improves the taste.
  • the second filter 20 can also be formed by a combination of activated carbon particles, filter screens and frames, and is not limited to the arrangement of carbon rods.
  • the carbon filter medium can also be replaced with KDF55 treatment medium (high purity copper / zinc alloy medium) to remove residual chlorine in water through electrochemical reaction, reduce mineral scaling, reduce suspended solids such as ferrous oxide, and inhibit microorganisms, Remove heavy metals.
  • a front and rear composite filter element 400 includes: a second filter element 20, a first filter element 10, a waterway partition plate 46, and an end cover assembly 40.
  • the second filter 20 is formed in a cylindrical shape, and a fourth uniform flow channel 22 is defined in the second filter 20.
  • the first filter 10 is also formed in a cylindrical shape, and the first filter 10 is sleeved on the outside of the second filter 20.
  • the second filter element 20 and the first filter element 10 are nested to save installation space and have a high degree of integration.
  • the cylindrical second filter element 20 and the first filter element 10 are convenient for processing, and are also convenient for nesting and integration between the two.
  • the waterway partition plate 46 is sleeved between the second filter element 20 and the first filter element 10, and a third uniform flow channel 21 is defined between the waterway partition plate 46 and the second filter element 20, and the waterway interval
  • a second uniform flow channel 12 is defined between the plate 46 and the first filter element 10, and the third uniform flow channel 21 and the second uniform flow channel 12 are separated by a waterway partition plate 46.
  • the water channel partition plate 46 separates the second filter element 20 and the first filter element 10 to separate the flow paths of the two filter elements, and does not interfere independently during operation, and can form two independent purified water channels.
  • the effluent of one purified water channel can be directly used as the influent of the other purified water channel; the effluent of one purified water channel can also be used as the inlet of another purified water channel after being filtered by other external filtering components.
  • the end cap assembly 40 is fitted on both ends of the first filter element 10, and the end cap assembly 40 is provided with an inner port 431 communicating with the fourth uniform flow channel 22, a transition port 332 communicating with the third uniform flow channel 21, and a first The outer port 441 of the flow channel 12 is evenly distributed.
  • the outer port 441 communicates with the second uniform flow channel 12, and the water to be treated (such as tap water) can enter the second uniform flow channel 12 after being purified by the first filter 10 from the outer peripheral surface of the first filter 10 And discharged from the external port 441.
  • the water to be treated may also enter the second uniform flow channel 12 from the outer port 441, and then be purified by the first filter 10 to flow to the outer peripheral side of the first filter 10 and then be discharged.
  • the transition port 332 communicates with the third uniformly distributed flow channel 21, and the third uniformly distributed flow channel 21 enters the inlet water of another water channel, and is purified by the second filter 20 to enter the fourth uniformly distributed flow channel 22, and then Discharge from the inner port 431.
  • the inlet water of the other water channel may also enter the fourth uniform distribution channel 22 from the inner port 431, and after being purified by the second filter 20, flow through the third uniform distribution channel 21 and be discharged from the transition port 332.
  • the cooperation of the end cover assembly 40 and the waterway partition plate 46 controls the filtering direction, water inlet direction and water outlet direction of each filter element of the front and rear composite filter element 400.
  • the passing path is short, the flow rate is large, and The impurities on the surface of the filter element have a flushing effect, and the water flow is easier to wash away the impurities and then pass through the filter element.
  • Most of the water flow of each filter element basically flows in the axial direction when entering and leaving the water, which is not only conducive to the uniform distribution of the water flow, but also helps to bring the impurities washed off the surface of the filter element to the axial end of the front and rear composite filter element 400 to avoid impurities Blocked on the surface of the filter.
  • the end cap assembly 40 forms a relatively fixed independent flow channel between the second filter element 20, the first filter element 10, and the water channel partition plate 46, and forms an inner port 431 that communicates with the fourth uniform flow channel 22, forming a communication
  • the outer port 441 of the second uniform flow channel 12 of the water channel forms a transition port 332 that communicates with the third uniform distribution channel 21 of the water channel; the end cap assembly 40 plays a supporting role and a sealing role.
  • the front and rear composite filter element 400 supports and installs the two axial ends using the end cover assembly 40, and forms two different purified water channels using the waterway partition plate 46.
  • the front and rear composite filter element 400 can be integrally disassembled and assembled by the end cover assembly 40. The installation and replacement of 400 is more convenient and fast.
  • This front and rear composite filter element 400 realizes the integrated design of small volume and large flux, which not only realizes the reduction of the size of the whole machine, but for the user, the integrated core replacement improves the user core replacement experience and reduces the user core replacement Cost, at the same time, have obvious help to the manufacturing process of the whole machine.
  • the end cap assembly 40 includes: a first inner end cap 41 and a first outer end cap 42, the first inner end cap 41 is fitted in the first One end of the second filter element 20 closes the fourth uniform flow channel 22, the first outer end cap 42 is fitted on the first filter element 10 and connected to the waterway partition plate 46, and the first outer end cap 42 is provided with a transition port 332 .
  • the structures of the first inner end cover 41 and the first outer end cover 42 are the same as the aforementioned structures, and will not be repeated here.
  • the end cap assembly 40 further includes: a second inner end cap 43 and a second outer end cap 44, the second inner end cap 43 is fitted in On the second filter 20, an inner port 431 is provided on the second inner end cap 43, and an outer port 441 is provided on the second outer end cap 44 to cover the inner port 431.
  • the structures of the second inner end cover 43 and the second outer end cover 44 are the same as the aforementioned structures, and will not be repeated here.
  • the end cap assembly 40 further includes: a second middle end cap 45, the second middle end cap 45 is fitted on the waterway partition plate 46, and the second outer end cap 44 is An outer port 441 is defined between the second middle end caps 45.
  • the second middle end cap 45 further separates the second uniform flow channel 12 and the third uniform flow channel 21, and seals the top of the third uniform flow channel 21 to prevent the third uniform flow channel 21 from The fluid is mixed with the fluid in other flow paths.
  • the other structure of the second middle end cap 45 is the same as the aforementioned structure, and will not be repeated here.
  • all the components in the front and rear composite filter element 400 are pre-assembled into an integral piece, that is, the second filter element 20, the first filter element 10, the first inner end cap 41, the first outer end cap 42, the second inner The end cap 43, the second outer end cap 44, and the second middle end cap 45 are pre-connected to be integrated into a front and rear integrated filter element. Even the seal 50 can be pre-assembled.
  • Such a front-rear integrated filter element can be directly inserted between the pallet in the housing 300 and the first bottle cap 310 and the second bottle cap 320 during assembly, and the assembly process of the whole machine is greatly simplified. Moreover, if the first bottle cap 310 and the second bottle cap 320 are detachably connected to the bottle body 330, the user can also replace the front and rear integrated filter cartridge 400 after use, and the operation steps when the user replaces It is very easy, improves the user's core replacement experience, and reduces the core replacement cost.
  • the spacer bracket 49, the first filter element 10, and the second filter element 20 in the front and rear composite filter element 400 are the same as the corresponding structures of the aforementioned composite filter element assembly 1000, which will not be repeated here.
  • the water purifier 2000 according to an embodiment of the present application, as shown in FIG. 19, includes the aforementioned composite filter element assembly 1000.
  • the water purifier 2000 can be used to purify tap water.
  • the use of the composite filter element assembly 100 is beneficial to the diversification of the functions of the water purifier 2000.
  • the composite filter element assembly 100 is adopted to realize the integrated design of small volume and large flux, the size reduction of the entire machine, and the integrated design is convenient Installation and replacement reduce the arrangement of connecting pipelines.
  • the integrated core replacement improves the user's core replacement experience and reduces the user's core replacement cost. At the same time, it has obvious help for the manufacturing process of the whole machine and has high reliability.
  • the structure of the composite filter element assembly 1000 in a specific embodiment of the present application will be described below with reference to FIGS. 1-12, and a specific embodiment of the present application will be described with reference to FIGS. 13-18
  • the following specific embodiments use purified tap water as an example to describe the three-stage filtration function of the composite filter element assembly 1000, and explain the highly integrated integrated design structure of the composite filter element assembly 1000.
  • the first filter 10 is described by taking a roll-type primary filter wound by rolling a nonwoven fabric, a polypropylene layer, carbon fiber, and a spacer 49 as an example;
  • the third filter 30 uses a side stream with high water saving
  • the reverse osmosis water-saving membrane will be described as an example of intermediate filtration.
  • the second filter 20 will be described by using a cylindrical hollow carbon rod as a final filtration.
  • the entire composite filter element assembly 1000 is normally installed in a vertical state. It includes a housing 300, which includes a bottle body 330 with open ends and a first bottle cap 310 and a second bottle cap 320 closed at both ends. Each bottle cap and the bottle body 330 form a sealed connection by matching threads . Add seals at the seals.
  • the first bottle cap 310 is provided with a first inlet and outlet 101 for tap water, a second inlet and outlet 102 for front water outlet, and a third inlet 201 for drinking water outlet.
  • the second bottle cap 320 is provided with a fourth inlet 302 for reverse osmosis pre-water intake and a fifth inlet 301 for reverse osmosis high-salinity wastewater drainage.
  • the interior of the housing 300 is integrally formed with a transition plate 331 that is perpendicular to the wall of the cylinder.
  • the transition plate 331 axially separates the housing 300 to form a first receiving cavity 100 and a second receiving cavity 200 .
  • a transition port 332 is provided in the middle of the transition plate 331 in the axial direction.
  • the first accommodating chamber 100 and the second accommodating chamber 200 communicate through a transition port 332.
  • two sets of filter units are provided in the first containing chamber 100, that is, the first filter element 10 with a cylindrical shape provided in the center of the first containing chamber 100 as the primary filter unit is provided in The second filter element 20 outside the first accommodating chamber 100 serves as a final filtering unit.
  • the axial length of the first filter 10 is greater than the axial length of the second filter 20.
  • the first filter 10 and the second filter 20 are separated by a cylindrical waterway partition 46.
  • An annular first uniform flow channel 11 is defined between the first filter element 10 and the inner wall of the first receiving cavity 100. As shown in FIG. 2, the first uniform flow channel 11 is connected to the first inlet 101.
  • An annular second uniform flow channel 12 is defined between the waterway partition plate 46 and the first filter element 10, and the second uniform flow channel 12 is connected to the second inlet and outlet 102.
  • An annular third uniform flow channel 21 is defined between the waterway partition plate 46 and the second filter 20, and a cylindrical fourth uniform distribution is provided on the side of the second filter 20 away from the third uniform flow channel 21 ⁇ ⁇ 22.
  • the third uniform flow channel 21 is connected to the transition port 332, and the fourth uniform flow channel 22 is connected to the third inlet 201.
  • the upper end of the second filter element 20 is provided with a second inner end cap 43, and the lower end of the second filter element 20 is provided with a first inner end cap 41.
  • the first inner end cap 41 is fitted in the first The axial end surface of the second filter element 20 facing the transition port 332 to block the second filter element 20 and the fourth uniform flow channel 22; the second inner end cap 43 is fitted on the second filter element 20 away from the transition port 332
  • the second inner end cap 43 is provided with an inner port 431 communicating with the third inlet 201, and at the same time, the inner port 431 communicates with the third uniform flow channel 21 .
  • the upper end of the first filter element 10 is provided with a second outer end cap 44, and the second outer end cap 44 is provided with an outer port 441 that covers the inner port 431; the axial end surface of the first filter element 10 facing the transition port 332 With the first outer end cover 42.
  • a water channel partition plate 46 is integrally formed on the first outer end cover 42. The first outer end cover 42 blocks the lower portion of the first filter element 10 and the third uniformly distributed flow channel 21.
  • a second middle end cap 45 is sleeved between the second outer end cap 44 and the second inner end cap 43, the second middle end cap 45 is fitted on the peripheral wall of the waterway partition plate 46, and the second middle end cap 45 is formed with a middle
  • the port 45 defines an outer port 441 between the second outer end cap 44 and the second middle end cap 45, and the outer port 441 communicates with the second uniform flow channel 12.
  • the second middle end cap 45 further separates the second uniform flow channel 12 and the third uniform flow channel 21, and seals the top of the third uniform flow channel 21 to prevent the third uniform flow channel 21 from The fluid is mixed with the fluid in other flow paths.
  • a seal is added between the second middle end cap 45 and the third connection pipe 313, and a seal is added between the second inner end cover 43 and the first connection pipe 311.
  • the second middle end cap 45 is in contact with the second outer end cap 44 and seals the outer port 441 when receiving the force toward the second outer end cap 44.
  • the end cap 45 communicates with the external port 441.
  • the inner peripheral wall of the housing 300 is provided with a first connecting pipe 311 toward the second inner end cover 43, and the inner peripheral wall of the housing 300 is provided with a second connecting pipe 312 toward the second outer end cover 44.
  • a third connecting pipe 313 is provided on the inner peripheral wall of 300 toward the second middle end cover 45, and the middle port 451 of the second middle end cover 45 is plug-connected with the third connecting pipe 313.
  • a channel connecting the second inlet and outlet 102 is formed between the third connecting tube 313 and the second outer end cover 44.
  • the cylindrical third filter 30 is provided in the second receiving chamber 200.
  • a fifth uniform flow channel 31 is defined between the third filter element 30 and the inner wall of the second receiving chamber 200, and the central central tube 33 of the third filter element 30 is directly opposite to the transition port 332.
  • the wall of the central tube 33 is provided with a filtered water inlet hole, and the third filter element 30 is composed of a plurality of reverse osmosis membrane bag, the reverse osmosis membrane bag has a first part and a second part, each waste water collection pipe 34 and the center
  • the tubes 33 are separated by at least one first part of the reverse osmosis membrane bag, and the second parts of the plurality of reverse osmosis membrane bags are formed around the central tube 33 and the plurality of wastewater headers 34 to form a multilayer Spiral wound film module.
  • the central pipe 33 is formed in a ring shape and is provided with five wastewater headers 34.
  • Each wastewater header 34 is connected to the fifth inlet 301 through the second end cover 320.
  • Each wastewater header 34 corresponds to a membrane bag.
  • a third end cap 47 and a fourth end cap 48 are provided at both ends of the third filter 30 respectively, and the third end cap 47 seals At the end of the third filter channel 32 and the waste water circulation cavity facing the first accommodation cavity 100, the fourth end cap 48 is sealed at the end of the third filter channel 32 and the filtered water circulation cavity away from the first accommodation cavity 100.
  • the two ends of the third end cap 47 are provided with a second cannula 471 and a third cannula 472 communicating with each other.
  • the second cannula 471 is inserted into the transition port 332, and the third cannula 472 is connected to the central tube 33.
  • the third end cover 47 is provided with a first positioning protrusion 473 which is in a foolproof cooperation with the waste water pipe 34.
  • the peripheral wall of the third end cover 47 is provided with a first assembling positioning structure 474 and fitted with the top of the third filter 30.
  • the fourth end cap 48 is provided with a waste discharge port 482 connected to the wastewater header 34.
  • a fourth connecting tube 321 is provided on the inner peripheral wall of the housing 300 toward the fourth end cover 48, and the fourth connecting tube 321 communicates with the fifth inlet and outlet 301, and a fourth insertion tube 481 and a fourth insertion tube 481 are provided on the fourth end cover 48 Plug-in connection with the fourth connection 321.
  • the fourth end cap 48 is provided with a second positioning protrusion 483 which is blocked and matched with the central tube 33.
  • a second assembly positioning structure 484 is provided on the peripheral wall of the fourth end cover 48 to cooperate with the bottom of the third filter 30.
  • a sealing ring is added between the third end cover 47 and the first outer end cover 42.
  • a sealing ring is added between the first outer end cover 42 and the transition port 332.
  • the entire tap water filtration process is that tap water enters the first uniform flow channel 11 from the first inlet and outlet 101 and flows radially inward, and after filtering by the first filter 10, flows to the second uniform flow channel 12 and from The upper second inlet / outlet 102 flows out as pre-water.
  • the outgoing pre-water is pressurized and pumped into the fourth inlet and outlet 302, and is evenly distributed in the fifth uniform flow channel 31, flowing in from the side of the lateral flow reverse osmosis water-saving membrane and passed by the third filter 30
  • the high-salinity wastewater is collected by the wastewater header 34 and discharged from the fifth inlet and outlet 301, and the pure water is collected by the central tube 33 and passes through the transition port 332. Pure water enters the third uniform flow channel 21 from the transition port 332, and is filtered through the second filter 20 in the radial direction, enters the fourth uniform flow channel 22, and flows out from the third inlet 201 for drinking.
  • a front-rear composite filter element 400 includes a cylindrical first filter element 10 and a cylindrical second filter element 20 sleeved inside the first filter element 10, and is disposed on the second The waterway partition plate 46 between the filter element 20 and the first filter element 10 and the end cap assemblies 40 provided at both ends of the second filter element 20 and the first filter element 10.
  • the second filter element 20, the first filter element 10, and the water channel partition plate 46 are coaxially arranged, the second filter element 20 defines a fourth uniform flow channel 22, the water channel partition plate 46 and the second filter A third uniform flow channel 21 is defined between the pieces 20, a second uniform flow channel 12, a third uniform flow channel 21 and a second uniform flow channel are defined between the waterway partition plate 46 and the first filter element 10 The 12 are separated by a waterway partition 46.
  • the second uniformly distributed flow channel 12 is provided with a cylindrical and grid-shaped spacer bracket 49 which is sleeved on the outer side of the waterway partition plate 46, and the spacer bracket 49 and the first filter element 10 are rolled together.
  • the filter layer of the first filter element 10 includes a nonwoven fabric layer, a polypropylene layer layer, and a composite layer wound with a carbon fiber layer.
  • the first filter element 10 serves as a primary filter element of tap water.
  • the second filter element 20 is a hollow carbon rod, which is used as tap water for final filtration before drinking water.
  • the end cap assembly 40 is provided with an inner port 431 communicating with the fourth uniform flow channel 22, a transition port 332 communicating with the third uniform flow channel 21, and an outer port 441 communicating with the second uniform flow channel 12.
  • the end cap assembly 40 includes a first inner end cap 41 and a first outer end cap 42 provided at the bottom of the front and rear composite filter element 400, and provided at the front and rear The second inner end cap 43, the second outer end cap 44, and the second middle end cap 45 on the top of the composite filter element 400 are placed.
  • the first inner end cover 41 is fitted on the bottom end of the second filter element 20 and closes the fourth uniform flow channel 22.
  • the periphery of the first inner end cover 41 is provided with a first upward turn In the side 411, the inner side surface of the first flange 411 is in contact with the outer circumferential surface of the second filter 20.
  • the first inner end cover 41 is provided with a first flange 412 extending into the fourth uniform flow channel 22.
  • the outer circumferential surface of the first flange 412 is in contact with the inner circumferential surface of the second filter 20.
  • the first outer end cover 42 is fitted on the bottom end of the first filter 10.
  • the first outer end cover 42 is provided with a first groove 424, and the first filter 10 and the bottom of the spacing bracket 49 are fitted in the first groove 424.
  • a middle portion of the first outer end cover 42 protrudes upward to form a boss 422, and a gap is left between the boss 422 and the first inner end cover 41.
  • the lower portion of the boss 422 extends downward to form a first outer interface 423, and a transition opening 332 opening toward the first inner end cover 41 is formed in the first outer interface 423.
  • the transition port 332 is directly opposite to the first inner end cap 41.
  • the first inner end cover 41 communicates with the third uniform flow channel 21.
  • the first outer end cover 42 and the waterway partition plate 46 are an integrally formed piece.
  • a seal 50 is provided outside the first external interface 423.
  • the second inner end cap 43 is fitted on the second filter element 20.
  • the periphery of the second inner end cap 43 is provided with a downward second flange 433, and the upper end of the second flange 433 Exposed in the third uniform flow channel 21, the inner surface of the second flange 433 is in contact with the outer surface of the second filter 20.
  • the second inner end cover 43 is provided with a second flange 434 extending into the fourth uniform flow channel 22, and the outer circumferential surface of the second flange 434 is in contact with the inner circumferential surface of the second filter 20.
  • the middle portion of the second inner end cover 43 extends upward to form an inner port 431.
  • the second outer end cap 44 is fitted on the top of the first filter element 10, the second outer end cap 44 is provided with a second groove 443, and the tops of the first filter element 10 and the spacer bracket 49 are fitted in the second groove 443 , The middle of the second outer end cap 44 protrudes upward to form a second outer port 444, the top of the second outer port 444 is flush with the top of the inner port 431, the inner port 431 and the second outer port 444 are spaced apart in the radial direction .
  • the second middle end cap 45 is fitted on the waterway partition plate 46, and a middle port 451 is defined between the second outer end cap 44 and the second middle end cap 45.
  • the upper portion of the second middle end cap 45 extends and is flush with the top of the second outer interface 444.
  • a seal 50 is provided on the outside of the second middle end cap 45.
  • the tap water When the tap water enters the second uniform flow channel 12 after the initial purification from the outer peripheral wall of the first filter 10, the water is discharged from the outer port 441.
  • Other filter element components can be connected between the outer port 441 and the transition port 332 to increase the water purification once, and then enter the transition port 332; it can also be directly connected by a pipeline to form a two-stage filter element in series.
  • the finally filtered tap water enters the third uniform flow channel 21 outside the second filter 20, and the drinking water filtered by the second filter 20 enters the fourth uniform flow channel 22 and passes through the inner port 431 outflow drinking.
  • connection should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • installation should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

一种复合滤芯组件(1000)、前后置复合滤芯(400)和净水机(2000)，复合滤芯组件包括：壳体(300)，壳体内由过渡板(331)隔出两容纳腔。第一、第二过滤件设在一容纳腔并由水路间隔板(46)间隔，第三过滤件(30)设在另一容纳腔。第一过滤件(10)两侧形成第一均布流道(11)和第二均布流道(12)。水路间隔板与第二过滤件(20)间限定出第三均布流道(21)，第二过滤件另一侧形成第四均布流道(22)。

Description

复合滤芯组件、前后置复合滤芯和净水机
相关申请的交叉引用
本申请基于申请号为201811287556.8、申请日为2018年10月31日的中国专利申请“复合滤芯组件”、申请号为201821791610.8、申请日为2018年10月31日的中国专利申请“复合滤芯组件”、申请号为201811289015.9、申请日为2018年10月31日的中国专利申请“前后置复合滤芯和净水机”、申请号为201821786831.6、以及申请日为2018年10月31日的中国专利申请“前后置复合滤芯和净水机”提出，并要求上述中国专利申请的优先权，上述中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及净水技术领域，具体是一种复合滤芯组件、前后置复合滤芯和净水机。
背景技术
从城市自来水厂输送到各用户的自来水中，通常会含有一定量的盐离子、金属物质、氯化物、微生物、泥沙等物质。为了提高饮水质量，越来越多的家庭选择在自来水的出水管上安装净水机，净水机内带有多种功能的滤芯，以去除自来水中不同种类的有害物质。
通常，现有的净水机滤芯一般为3～4级，部分厂家净水机滤芯为双芯。为了改善复合滤芯组件的过滤效果，通常在净水机内布置多种滤芯组件，各个滤芯组件之间的进、出水口依次串联，不同的滤芯两侧分别形成进水腔体、出水腔体，为了达到高品质的饮用水，往往需要串联三级、四级滤芯组件，不同滤芯组件之间的出水口和进水口之间均需要外部管道进行连接，使复合滤芯组件管道系统庞杂，净水机整机占用空间较大，不方便安装和更换滤芯。此外，各个滤芯分别单独制成一个功能性的过滤组件，整套滤芯的安装、更换复杂，占用空间大，更换成本高，降低了用户的换芯体验。
发明内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本申请的一个目的在于提出一种复合滤芯组件，所述复合滤芯组件体积小，过滤效果好。
本申请第二目的在于提出一种前后置复合滤芯。
本申请的第三目的在于提出一种包括上述复合滤芯组件的净水机。
根据本申请实施例的复合滤芯组件，包括：壳体，所述壳体内限定出第一容纳腔和第二 容纳腔，所述第一容纳腔和所述第二容纳腔之间通过过渡板间隔开，所述过渡板上设有过渡口，所述壳体上设有第一进出口、第二进出口、第三进出口和第四进出口；第一过滤件，所述第一过滤件设在所述第一容纳腔内，所述第一过滤件与所述第一容纳腔的内壁之间限定出第一均布流道，所述第一均布流道与所述第一进出口相连；第二过滤件，所述第二过滤件设在所述第一容纳腔内；水路间隔板，所述水路间隔板间隔在所述第一过滤件和所述第二过滤件之间，所述水路间隔板与所述第一过滤件之间限定出第二均布流道，所述水路间隔板与所述第二过滤件之间限定出第三均布流道，所述第二过滤件的远离所述第三均布流道的一侧设有第四均布流道，所述第二均布流道连接所述第二进出口，所述第三均布流道和所述第四均布流道中的一个连接所述第三进出口，所述第三均布流道和所述第四均布流道中的另一个连接所述过渡口；第三过滤件，所述第三过滤件设在所述第二容纳腔内。
根据本申请实施例的复合滤芯组件，其内部集成安装有三组过滤件，过滤功能多样化，保证了最终的自来水的过滤效果。集成度高、整体体积小，极大地减少了安装时所需的空间。通过在壳体内设置过渡板、水路间隔板，使得第一过滤件、第二过滤件、第三过滤件分别相隔，且整体布置紧凑。第二容纳腔中的第三过滤件通过过渡口与第一容纳腔中的第二过滤件形成串联关系，无需布置外部的连接管路，一定程度上节省用材成本和空间。从每个过滤件两侧的均布流道的布置可以看出，过滤水流穿过路径短、流通量大。
可选的，所述第一过滤件、所述水路间隔板和所述第二过滤件为依次套设的筒形，所述第二过滤件的中心腔为所述第四均布流道。
可选的，复合滤芯组件还包括：第一内端盖，所述第一内端盖配合在所述第二过滤件的朝向所述过渡口的轴向端面上，以堵住所述第二过滤件及所述第四均布流道。
可选的，复合滤芯组件还包括：第一外端盖，所述第一外端盖配合在所述第一过滤件的朝向所述过渡口的轴向端面上，所述水路间隔板连接在所述第一外端盖上，以堵住所述第一过滤件及所述第二均布流道。
可选的，所述第一外端盖上设有第一插管，所述第一插管插接在所述过渡口内，所述第一插管与所述过渡口的内壁之间密封配合。
可选的，所述过渡口正对所述第一内端盖设置，所述第一内端盖在受到朝向所述第一外端盖的作用力时与所述第一外端盖相接触，当所述过渡口进水挤开所述第一内端盖时与所述第三均布流道连通。
可选的，所述水路间隔板与所述第一外端盖为一体成型件。
可选的，复合滤芯组件还包括：第二内端盖和第二外端盖，所述第二内端盖配合在所述第二过滤件的远离所述过渡口的轴向端面上，以堵住所述第二过滤件，所述第二内端盖上设有连通所述第三进出口的内端口，所述内端口连通所述第三均布流道，所述第二外端盖 配合在所述第一过滤件的远离所述过渡口的轴向端面上，以堵住所述第一过滤件，所述第二外端盖上设有外套在所述内端口的外端口。
可选的，所述壳体的内周壁上设有第一接管、第二接管，所述第二内端盖的所述内端口与所述第一接管插接连接，所述第二外端盖的所述外端口与所述第二接管插接连接。
可选的，所述壳体的内周壁上设有第三接管，所述第一容纳腔内还设有第二中端盖，所述第二中端盖配合在所述水路间隔板的周壁上，所述第二中端盖上设有外套在所述内端口的中端口，所述第二中端盖的所述中端口与所述第三接管插接连接，所述第二外端盖与所述第二中端盖之间限定出所述外端口，所述外端口连通所述第二均布流道。
可选的，所述第二中端盖在受到朝向所述第二外端盖的作用力时与所述第二外端盖相接触并封住所述外端口，当所述第二均布流道内水流挤开所述第二中端盖时与所述外端口连通。
可选的，所述第一过滤件为由无纺布、聚丙烯层、碳纤维卷制而成的卷筒。
可选的，所述第三过滤件形成为筒形，所述第三过滤件与所述第二容纳腔的内壁之间限定出第五均布流道，所述第四进出口连通所述第五均布流道，第三过滤件的中心正对所述过渡口设置。
可选的，所述壳体上设有第五进出口，所述复合滤芯组件还包括反渗透膜元件，所述反渗透膜元件包括：中心管组和多个反渗透膜片袋，所述中心管组包括中心管和多个间隔开设置的废水集管，多个所述废水集管环绕所述中心管设置，所述中心管的管壁上设有过滤水入孔，所述废水集管的管壁上设有废水入孔；所述反渗透膜片袋具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水集管和所述中心管被至少一个所述反渗透膜片袋的第一部分隔开，多个所述反渗透膜片袋的所述第二部分形成围绕在所述中心管组的周围的多层薄膜组件；其中，所述多层薄膜组件构成所述第三过滤件，所述废水集管与所述第五进出口相连，所述中心管与所述过渡口相连。
具体可选的，复合滤芯组件还包括：第三端盖，所述第三端盖配合在所述反渗透膜元件的朝向所述过渡口的端面上，所述第三端盖的两端设有相通的第二插管和第三插管，所述第二插管插接在所述过渡口内，所述第三插管与所述中心管相连；第四端盖，所述第四端盖配合在所述反渗透膜元件的远离所述过渡口的端面上，所述第四端盖上设有分别与所述废水集管、所述第五进出口相连的排废口。
可选的，所述壳体的内周壁上设有第四接管，所述第四接管连通所述第五进出口，所述第四端盖上设有第四插管，所述第四插管与所述第四接管插接相连。
可选的，还包括间隔支架，所述间隔支架设在所述第二均布流道内，所述间隔支架为筒形且为格栅状，所述间隔支架套在所述水路间隔板的外侧。
根据本申请实施例的前后置复合滤芯，包括：第二过滤件，所述第二过滤件形成为筒形，所述第二过滤件内限定出第四均布流道；第一过滤件，所述第一过滤件形成为筒形，所述第一过滤件套在所述第二过滤件的外侧；水路间隔板，所述水路间隔板套在所述第二过滤件和所述第一过滤件之间，所述水路间隔板与所述第二过滤件之间限定出第三均布流道，所述水路间隔板与所述第一过滤件之间限定出第二均布流道，所述第三均布流道和所述第二均布流道之间通过所述水路间隔板隔开；端盖组件，所述端盖组件配合在所述第一过滤件的两端，所述端盖组件上设有连通所述第四均布流道的内端口、连通所述第三均布流道的过渡口及连通所述第二均布流道的外端口。
根据本申请实施例的前后置复合滤芯，第二过滤件套在第一过滤件内，但两者之间的流道由水路间隔板隔开，两过滤件之间工作时不会相互干扰，且两过滤件所占的总空间近似为第一过滤件所占的空间，省去了第二过滤件安装时需占用的外部安装空间。两种过滤件集成为一体，两端的端盖组件可隔绝各过滤件的进、出水口，控制各个过滤件的进水方向和出水方向，也方便单独更换一种过滤件。前后置复合滤芯利用端盖组件将轴向两端支撑安装，利用水路间隔板形成两个不同净化水路，前后置复合滤芯可通过端盖组件进行整体拆装，前后置复合滤芯的安装及更换更加方便、快捷。这种前后置复合滤芯，实现了小体积、大通量的一体化设计，既实现了整机的尺寸降低，对于用户来说，一体换芯提高了用户换芯体验也降低了用户换芯成本，同时对整机的制造工艺都有明显的帮助。
可选的，前后置复合滤芯还包括：间隔支架，所述间隔支架设在所述第二均布流道内。
可选的，所述间隔支架为筒形且为格栅状，所述间隔支架套在所述水路间隔板的外侧。
可选的，所述端盖组件包括：第一内端盖和第一外端盖，所述第一内端盖配合在所述第二过滤件的一端且封闭所述第四均布流道，所述第一外端盖配合在所述第一过滤件上且与所述水路间隔板相连，所述第一外端盖上设有所述过渡口。
可选的，所述过渡口正对所述第一内端盖设置，所述第一内端盖在受到朝向所述第一外端盖的作用力时与所述第一外端盖相接触，当所述过渡口进水挤开所述第一内端盖时与所述第三均布流道连通。
可选的，所述水路间隔板与所述第一外端盖为一体成型件。
可选的，所述端盖组件包括：第二内端盖和第二外端盖，所述第二内端盖配合在所述第二过滤件上，所述第二内端盖上设有所述内端口，所述第二外端盖上设有外套在所述内端口上的所述外端口。
可选的，所述端盖组件包括：第二中端盖，所述第二中端盖配合在所述水路间隔板上，所述第二外端盖与所述第二中端盖之间限定出所述外端口。
可选的，所述第二中端盖在受到朝向所述第二外端盖的作用力时与所述第二外端盖相接 触并封住所述外端口，当所述第二均布流道内水流挤开所述第二中端盖时与所述外端口连通。
可选的，所述第一过滤件为由无纺布、聚丙烯层、碳纤维卷制而成的卷筒。
根据本申请实施例的净水机，包括上述任一项所述的复合滤芯组件。
根据本申请实施例的净水机，采用集成式的复合滤芯组件，使得整机尺寸降低占用空间少、且安装方便、简化流路。集成复合化是未来净水机的发展趋势，对于用户来说，一体换芯也提高了用户换芯体验、降低了用户换芯成本，简化了整机的制造工艺。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1为本申请一个实施例的复合滤芯组件的总体结构示意图。
图2为本申请一个实施例的复合滤芯组件的内部结构示意图。
图3为图2的俯视图。
图4为图2的仰视图。
图5为图2省去第一过滤件、第二过滤件、第三过滤件的内部结构示意图。
图6为本申请一个实施例的第三端盖的俯视图。
图7为本申请一个实施例的第三端盖的仰视图。
图8为本申请一个实施例的第四端盖的仰视图。
图9为本申请一个实施例的第四端盖的俯视图。
图10为本申请一个实施例的中心管和废水集管的立体结构示意图。
图11为本申请一个实施例的一片反渗透膜片袋和中心管、一个废水集管配合的俯视图。
图12为本申请一个实施例中反渗透膜元件的俯视图。
图13为第一容纳腔中的第一过滤件、第二过滤件、水路间隔板省去上部的端盖的结构示意图。
图14为第一容纳腔内的第一过滤件、第二过滤件去掉下部的端盖后的结构示意图。
图15为本申请一个实施例的前后置复合滤芯的外部结构示意图。
图16为本申请一个实施例的前后置复合滤芯的纵向剖面结构示意图。
图17为图15下部的端盖组件的仰视图。
图18为图15上部的端盖组件的俯视图。
图19为本申请一个实施例的净水机和复合滤芯组件的简易示意图。
附图标记：
复合滤芯组件1000；
前后置复合滤芯400；第一容纳腔100；
第一过滤件10；第一均布流道11；第二均布流道12；
第一进出口101；第二进出口102；
第二过滤件20；第三均布流道21；第四均布流道22；
第三进出口201；
端盖组件40；
第一内端盖41；第一翻边411；第一凸缘412；
第一外端盖42；第一插管421；凸台422；第一外接口423；第一凹槽424；第三翻边425；
第二内端盖43；内端口431；第五插管432；第二翻边433；第二凸缘434；
第二外端盖44；外端口441；第六插管442；第二凹槽443；第二外接口444；
第二中端盖45；中端口451；第七插管452；
水路间隔板46；
间隔支架49；
密封件50；
第二容纳腔200；
第三过滤件30；第五均布流道31；过滤膜32；中心管33；废水集管34；
第五进出口301；第四进出口302；
第三端盖47；第二插管471；第三插管472；第一定位凸起473；第一装配定位结构474；
第四端盖48；第四插管481；排废口482；第二定位凸起483；第二装配定位结构484；
壳体300；
第一瓶盖310；第一接管311；第二接管312；第三接管313；
第二瓶盖320；第四接管321；
瓶体330；过渡板331；过渡口332；
净水机2000。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
下面参考附图描述本申请实施例的复合滤芯组件1000。
根据本申请实施例的复合滤芯组件1000，如图1和图2所示，包括：壳体300、第一过滤件10、第二过滤件20、水路间隔板46、第三过滤件30。
其中，如图2、图5所示，壳体300内限定出第一容纳腔100和第二容纳腔200，第一容纳腔100和第二容纳腔200之间通过过渡板331间隔开。过渡板331上设有过渡口332。这里，过渡板331使第一容纳腔100和第二容纳腔200在壳体300内形成两个总体相隔的腔体，两腔体之间仅通过过渡口332连通。
如图3所示，壳体300上设有第一进出口101、第二进出口102、第三进出口201和第四进出口302。
第一过滤件10设在第一容纳腔100内，第一过滤件10与第一容纳腔100的内壁之间限定出第一均布流道11，第一均布流道11与第一进出口101相连。此处，第一均布流道11中可均布第一过滤件10待净化的液体，也可以均布第一过滤件10已净化后的液体。
第二过滤件20设在第一容纳腔100内，水路间隔板46间隔在第一过滤件10和第二过滤件20之间。水路间隔板46使同在第一容纳腔100中的第一过滤件10和第二过滤件20分隔开来，形成两个独立的净化水路。两组过滤件之间可连接其他过滤件；也可以直接将第一过滤件10的进水口和第二过滤件20的出水口相连，或直接将第一过滤件10的出水口和第二过滤件20的进水口相连，使得第一过滤件10和第二过滤件20之间的净化水路形成前、后串联的关系。
水路间隔板46与第一过滤件10之间限定出第二均布流道12。此处，当第一均布流道11内均布第一过滤件10待净化的液体，则第二均布流道12内均布第一过滤件10已净化后的液体；反之，亦可。
第二均布流道12连接第二进出口102。即，当第一进出口101为进口时，第二进出口102则为出口；当第一进出口101为出口时，第二进出口102则为进口。
水路间隔板46与第二过滤件20之间限定出第三均布流道21，第二过滤件20的远离第三均布流道21的一侧设有第四均布流道22，第三均布流道21和第四均布流道22中的一个连接第三进出口201，第三均布流道21和第四均布流道22中的另一个连接过渡口332。此处，当第三均布流道21连接过渡口332时，第四均布流道22则连接第三进出口201；当第三均布流道21连接第三进出口201时，第四均布流道22则连接过渡 口332。
第三过滤件30设在第二容纳腔200内。此处，第三过滤件30可进一步增加复合滤芯组件1000整体的过滤功能，提升出水的品质。
可以理解的是，本申请复合滤芯组件1000内通过在一个壳体300中设置三组过滤件，一体化程度高，结构紧凑，有利于减小结构尺寸，过滤功能多样化，可分别形成初滤、再滤、终滤，与此同时针对不同的杂质进行滤除，过滤效率高，保证复合滤芯组件1000整体的过滤效果。
三组过滤件分别分布在不同的腔体内，第一过滤件10、第二过滤件20在同一个腔体，第三过滤件30在另一个腔体，相比于现有技术中每个滤芯壳体中设置一组过滤件，各过滤滤芯再通过外部的管路相连接而成的方式，本申请在一定程度上减少了外部连接管路的设置，进而减小了安装时所需的外部空间，节省用户的橱柜内部体积；同时，增强了整体的美观性能。
第一容纳腔100和第二容纳腔200在轴向间隔开设置，第二过滤件20两侧的其中一个均布流道通过过渡板331上的过渡口332连通第二容纳腔200，两容纳腔(100，200)配合紧凑，节省了第三过滤件30过滤后的水在流向第二过滤件20过滤时所需要铺设的外部连接管道；也可以是，节省第二过滤件20过滤后的水在流向第三过滤件30过滤时所需要铺设的外部连接管道。有利于复合滤芯组件1000减小整体尺寸。有利于简化外部管路的布置。
从第一均布流道11、第二均布流道12、第三均布流道21和第四均布流道22的布局位置来看，水流在穿过第一过滤件10和第二过滤件20时，大部分沿第一容纳腔100的径向穿过，穿过路径短、流通量大。而且径向穿过时对过滤件表面的杂质具有冲刷作用，水流更易冲开杂质后穿过过滤件。而每个过滤件在进出水时大部分水流基本沿轴向流动，这样不仅有利于水流均布，也有利于将冲刷下的杂质带到轴向端部，避免杂质堵在过滤件表面。
相比于现有技术中一个滤芯组件中集成两组过滤件，本申请的集成度更高，功能更强。更换滤芯时，仅需要拆卸壳体300不同的端部，以及各个过滤件对应的封端，便可以实施相应的过滤件的更换，更换简单、操作容易，为客户亲自进行更换提供了可能性，降低了维护成本。即使容纳腔内过滤件安装好后不能再拆出，但是由于所有过滤件均设置在壳体300内，复合滤芯组件1000整体安装时只需要一套定位、安装结构，装配简单、省时。
本申请实施例中，将壳体内腔通过过渡板331分隔成第一容纳腔100和第二容纳腔200，其设计还能满足不同过滤结构对水压的要求。例如，第一容纳腔100内过滤流通 阻力小，因而第一容纳腔100设计为低压腔，这样净水系统无需为第一容纳腔100配置增压泵，第一容纳腔100内部零件及相应接头承压小，零件装配密封可靠性要求低。而第二容纳腔200内过滤流通阻力大，此时可单独为第二容纳腔200配置增压泵，同时要保证第二容纳腔200内部零件及相应接管的承压能力。这样分开设置，有利于降低成本。
在本申请的一些实施例中，如图1、图5所示，壳体300包括：瓶体330和两个瓶盖，瓶体330的两端敞开，两个瓶盖配合在瓶体330的两端，每个瓶盖均可拆卸地密封连接在瓶体330上。此处，可拆卸地连接可以为螺纹连接，即瓶体330的端部和瓶盖上一个设置外螺纹，另一个设置相配合的内螺纹。也可以为卡接连接，即瓶体330的端部设置卡扣，瓶体330两端的第一瓶盖310和第二瓶盖320上设置卡孔，使得瓶体330和第一瓶盖310、第二瓶盖320分别形成卡接关系。当然，其他容易想到的可拆卸的连接方式，也可以用于本申请中，这里不做限制。
过渡板331的中部设有在厚度方向上贯通的过渡口332。可选地，如图5所示，当瓶体330为塑胶件时，过渡板331与瓶体330一体注塑成型，一体成型方便加工制造，且过渡板331与瓶体330之间密封连接非常可靠，避免在受力冲击或者两侧压差过大时，过渡板331在瓶体330内偏斜、漏水等。当然，过渡板331也可以焊接连接在瓶体330，这里不作限制。
在本申请的一些实施例中，如图2、图5所示，第一过滤件10、水路间隔板46和第二过滤件20为依次套设的筒形，第二过滤件20的中心腔为第四均布流道22。此处，第四均布流道22处于第一容纳腔100的中心，其为柱形。第四均布流道22的外侧在径向方向上分别紧凑布置一层第二过滤件20、一层第三均布流道21、一层水路间隔板46、一层第二均布流道12、一层第一过滤件10、一层第一均布流道11，第三均布流道21和第二均布流道12之间通过水路间隔板46隔绝不流通。第一容纳腔100整体布置紧凑、占用的安装空间少、集成度高。方便安装第一过滤件10和第二过滤件20。
在本申请的一些实施例中，如图2所示，复合滤芯组件1000还包括：第一内端盖41，第一内端盖41配合在第二过滤件20的朝向过渡口332的轴向端面上，以堵住第二过滤件20及第四均布流道22。这里说的第一内端盖41堵住第二过滤件20及第四均布流道22，指的是第一内端盖41封住了第二过滤件20及第四均布流道22的轴向端面，使第二过滤件20及第四均布流道22内的水不能从朝向过渡口332的轴向端面流出或者流入。下文提及到的某端盖堵住某过滤件和某均布流道时，其含义也均是如此，后文将 不再赘述。
在图2中，第一内端盖41封闭了第二过滤件20和第四均布流道22的底部，且为第二过滤件20提供了底部的支撑，有效地防止了第二过滤件20两侧的待净化的液体，和已经净化后的液体在底部相串，保证了第二过滤件20的过滤效果。
可选地，如图13所示，第一内端盖41上设有伸入到第四均布流道22中的第一凸缘412，第一凸缘412的外周面与第二过滤件20的内周面接触。第一凸缘412进一步增强了第一内端盖41和第二过滤件20之间的连接，防止第四均布流道22中的液体从第二过滤件20的底部向外渗透。
可选地，如图13所示，第一内端盖41的外周边设有向上的第一翻边411，第一翻边411的内侧面与第二过滤件20的外周面接触。第一翻边411使第一内端盖41与第二过滤件20之间的连接更为紧密，增加连接的可靠性，进一步防止第三均布流道21中的流体从第二过滤件20的底部流入到第四均布流道22中，保证了第二过滤件20的过滤效果。
上述第一凸缘412和第一翻边411每一样的设置，都可增强第一内端盖41对第四均布流道22和第二过滤件20的端面的液体封挡效果；且能够形成对第一内端盖41和第二过滤件20的防呆配合，容易装配。具体地，第二过滤件20的轴端端面胶粘在第一内端盖41上，这样不仅装配方便，而且便于一体芯的安装。可选地，第二过滤件20通过一圈热熔胶密封连接在第一内端盖41上。
在本申请的一些实施例中，如图2、图5所示，复合滤芯组件1000还包括：第一外端盖42，第一外端盖42配合在第一过滤件10的朝向过渡口332的轴向端面上，水路间隔板46连接在第一外端盖42上，以堵住第一过滤件10及第二均布流道12。如图2中，第一外端盖42封闭了第一过滤件10、第二均布流道12的底部，且为第一过滤件10提供了支撑，有效地防止了第一过滤件10两侧的待净化的液体和已经净化后的液体在底部相串，保证了第一过滤件10的过滤效果。水路间隔板46连接在第一外端盖42上，有利于第一外端盖42牢靠地设置在特定位置，使得第二均布流道12和第三均布流道21产生可靠的分隔，避免第一过滤件10和第二过滤件20内的液体发生串流、避免各均布流道中的水质降低。
可选地，如图13所示，第一外端盖42上设有第一凹槽424，第一过滤件10和间隔支架49的底部配合在第一凹槽424中。第一过滤件10的外周面与第一凹槽424的周面贴合，间隔支架49的内周面与第一凹槽424的周面贴合，第一过滤件10和间隔支架49的底面与第一凹槽424的槽面贴合。第一凹槽424的设置，方便了第一过滤件10和 间隔支架49的固定安装，进一步增加了第一过滤件10、间隔支架49与第一外端盖42之间的连接，保证了第一过滤件10外的流体和第二均布流道12中不同的水路之间不发生串流，保证了第一过滤件10的过滤性能。
可选地，水路间隔板46与第一外端盖42为一体成型件。一体成型方便加工制造。一体成型后水路间隔板46与第一外端盖42之间不易出现间隙，位置相对稳定。一体成型也方便装配，且保证长期使用后，第三均布流道21和第二均布流道12之间不易串流。而且形成整体件后对第二过滤件20、第一过滤件10都能起到良好的支撑作用。
可选地，第一外端盖42中部向上凸出形成凸台422，第一内端盖41悬置于凸台422上方。即，第一内端盖41与凸台422之间有一定间隙，使第三均布流道21与过渡口332在合适的条件下连通，使第二过滤件20和第三过滤件30之间的净化水路串联。也就是说，第二过滤件20过滤后的水可经过渡口332流向第三过滤件30，由第三过滤件30再次过滤；或者，第三过滤件30过滤后的水可经过渡口332流向第二过滤件20，由第二过滤件20再次过滤。可选地，凸台422的下部向下延伸形成第一外接口423，第一外接口423内形成有过渡口332。此处的第一外接口423可用来连接外部管道或者其他滤芯组件，此处的第一外接口423的长度可根据需要进行设计。
可选地，第一外接口423上设有密封件50，以分隔进入内路口120的流体和外界的其他流路的流体。
可选地，第一外端盖42的外周边设有第三翻边425，第三翻边425的内侧面与第一过滤件10的外周面接触。第三翻边425外套在第一外端盖42的中部的凸台422的外侧，第三翻边425与中部的凸台422的两侧阻挡，可增强第一外端盖42对第一过滤件10的端面的液体封挡效果；且能够形成对第一过滤件10的防呆配合，容易装配。具体地，第一过滤件10的轴端端面胶粘在第一外端盖42上，这样不仅装配方便，而且便于一体芯的安装。可选地，第一过滤件10通过一圈热熔胶密封连接在第一外端盖42上。
在本申请的一些实施例中，如图5所示，第一外端盖42上设有第一插管421，第一插管421插接在过渡口332内，第一插管421与过渡口332的内壁之间密封配合。第一插管421插接在过渡口332中，一方面进一步封闭了过渡口332，防止第一容纳腔100和第二容纳腔200之间的液体发生不必要的串流；另一方面，使第二过滤件20和第三过滤件30之间的流道连接更为容易。
具体地，第一插管421与第一内端盖41同轴设置，第一插管421的内径小于第一内端盖41的外径，这样第一内端盖41、第二过滤件20挡在第一外端盖42内。
可选地，第一内端盖41与第一外端盖42之间的缝隙较小，第一内端盖41在受到朝向第一外端盖42的作用力时与第一外端盖42相接触，当过渡口332进水挤开第一内 端盖41时，缝隙变大，水路流通更加畅通。将第一内端盖41设置成与第一外端盖42小距离的悬置设计，能使水流在经第二过滤件20时水压能达到微妙的平衡。即当第四均布流道22内水压大于过渡口332处水压时，第一内端盖41能够暂时封住过渡口332。
在本申请的一些实施例中，如图2、图5所示，复合滤芯组件1000还包括：第二内端盖43和第二外端盖44。其中，第二内端盖43配合在第二过滤件20的远离过渡口332的轴向端面上，以堵住第二过滤件20，第二内端盖43上设有连通第三进出口201的内端口431。这里，第二内端盖43封闭了第二过滤件20的顶部，且为第二过滤件20提供了顶部的连接，为第三进出口201提供了走向，有效地防止了第二过滤件20两侧的待净化的液体，和已经净化后的液体在顶部相串，进一步保证了第二过滤件20的过滤效果。经第二过滤件20过滤后的流体聚集在第四均布流道22中，经由内端口431向外排出。
在具体的示例中，前述的过渡口332正对第一内端盖41设置，第一内端盖41在受到朝向第一外端盖42的作用力时与第一外端盖42相接触，当过渡口332进水挤开第一内端盖41时与第三均布流道21连通。过渡口332为第二过滤件20的待净化流体提供了入口，方便待净化的流体进入到第三均布流道21中。这里需要说明的是，第一内端盖41与第一外端盖42之间非稳定相连，只有在第一内端盖41受到朝向第一外端盖42的挤压力时，两者才会紧密接触。而当第一内端盖41受到朝向远离第一外端盖42的挤压力时，两者之间会形成缝隙，流体会从过渡口332进入到第三均布流道21中。
可选地，如图14所示，第二内端盖43的周边设有向下的第二翻边433，第二翻边433的内侧面与第二过滤件20的外周面接触。第二翻边433使第二内端盖43与第二过滤件20之间的连接更为紧密，增加连接的可靠性，进一步防止第三均布流道21中的流体从第二过滤件20的顶部流入到第四均布流道22中，保证了第二过滤件20的过滤效果。
如图14所示，第二内端盖43上设有伸入到第四均布流道22中的第二凸缘434，第二凸缘434的外周面与第二过滤件20的内周面接触。第二凸缘434进一步增强了第二内端盖43和第二过滤件20之间的连接，防止第四均布流道22中的液体从第二过滤件20的顶部向外渗透。安装第二内端盖43于第二过滤件20顶部时，定位准确。
上述第二凸缘434和第二翻边433每一样的设置，使第二内端盖43与第二过滤件20之间的连接更为紧密，增加连接的可靠性。且都可增强第二内端盖43对第二过滤件20的端面的液体封挡效果，且能够形成对第二内端盖43的防呆配合，容易装配。
具体地，第二过滤件20的轴端端面胶粘在第二内端盖43上，这样不仅装配方便， 而且便于一体芯的安装。可选地，第二过滤件20通过一圈热熔胶密封连接在第二内端盖43上。
第二外端盖44配合在第一过滤件10的远离过渡口332的轴向端面上，以堵住第一过滤件10，第二外端盖44上设有外套在内端口431的外端口441。相应地，第二外端盖44封闭了第一过滤件10、第二均布流道12的顶部，且为第一过滤件10提供了连接，为第一进出口101、第二进出口102进行了分隔，有效地防止了第一过滤件10两侧的待净化的液体和已经净化后的液体在顶部相串，进一步保证了第一过滤件10的过滤效果。
可选地，如图14所示，第二外端盖44上设有第二凹槽443，第一过滤件10和间隔支架49的顶部配合在第二凹槽443中。第一过滤件10的外周面与第二凹槽443的外层周面贴合，间隔支架49的外周面与第二凹槽443的内层周面接触，第一过滤件10和间隔支架49的顶面与第二凹槽443的槽面贴合。第二凹槽443的设置，进一步增加了第一过滤件10和间隔支架49与第二外端盖44之间的连接，保证了第一过滤件10外的流体和第二均布流道12中不同的水质之间不发生串流，保证了第一过滤件10的过滤性能。
可选地，如图14所示，第二外端盖44中部向上凸出形成第二外接口444，第二内端盖43的中部向上延伸形成内端口431，内端口431的顶部与第二外接口444的顶部平齐，内端口431和第二外接口444在径向方向上间隔设置。径向方向间隔设置的第二外接口444和内端口431之间预留空间设置中端口451。顶部平齐方便最终的装配。
可选地，第二外接口444上设有密封件50，以分隔待过滤的流体和经第一过滤件10过滤后的流体。
可选地，第二外端盖44的周边设有向下的外翻边，外翻边的内侧面与第一过滤件10的外周面接触。外翻边的设置，使第二外端盖44与第一过滤件10之间的连接更为紧密，增加连接的可靠性。且都可增强第二外端盖44对第一过滤件10的端面的液体封挡效果，且能够形成对第一过滤件10的防呆配合，容易装配。
具体地，第一过滤件10的轴端端面胶粘在第二外端盖44上，这样不仅装配方便，而且便于一体芯的安装。可选地，第一过滤件10通过一圈热熔胶密封连接在第二外端盖44上。
在一些示例中，如图5所示，壳体300的内周壁上设有第一接管311、第二接管312，第二内端盖43的内端口431与第一接管311插接连接，第二外端盖44的外端口441与第二接管312插接连接。这种插接连接的装配方式，使第一滤芯10、第二滤芯20在壳体300内的固定变得非常容易。
从这里可以看出，第一过滤件10的一端通过第一外端盖42插接在过渡口332上，第一过滤件10的另一端通过第二外端盖44插接在第二接管312上，这样第一过滤件10的位置得到基本固定，且装配的步骤只有两端插接的过程，由此可见其装配非常简单、省时。而且只要壳体300不变形，第一过滤件10的两端就不会脱出，由此可见第一过滤件10的装配可靠性较高。
而第二过滤件20的一端通过第二内端盖43插接在第一接管311上，第二过滤件20的另一端由第一内端盖41封住，且第一内端盖41与第一外端盖42间隔非常小，相当于第二过滤件20的另一端由第一外端盖42托住。这样第二过滤件20的位置也得到基本固定，且装配的步骤只有一端插接的过程，由此可见其装配非常简单、省时。而且只要壳体300不变形，第二过滤件20的两端就不会脱出，由此可见第二过滤件20的装配可靠性较高。
在图5的示例中，第二内端盖43上形成有第五插管432，第五插管432的管口形成上述内端口431，内端口431连通第四均布流道22。第五插管432可以插在第一接管311内，第五插管432也可以插在第一接管311外。为提高密封效果，第五插管432与第一接管311之间设有密封圈。
在图5的示例中，第二外端盖44上形成有第六插管442，第六插管442的管口形成上述外端口441。第六插管442可以插在第二接管312内，第六插管442也可以插在第二接管312外。为提高密封效果，第六插管442与第二接管312之间设有密封圈。
在一些示例中，如图5所示，壳体300的内周壁上设有第三接管313，第一容纳腔100内还设有第二中端盖45，第二中端盖45配合在水路间隔板46的周壁上，第二中端盖45上设有外套在内端口431的中端口451，第二中端盖45的中端口451与第三接管313插接连接。
在本申请实施例中，也可以不设置第二中端盖45，这样水路间隔板46可以直接与第三接管313相连，这样节省零件数量。但是由于第二过滤件20要装配到水路间隔板46的内侧，水路间隔板46开口小了则装不进去，水路间隔板46开口大了则会影响第二外端盖44与第一过滤件10的装配，整体装配难度加大。
因此这里提出设置第二中端盖45，装配时先将第二过滤件20等零件装入水路间隔板46内，然后再将第二中端盖45连接在水路间隔板46上，则满足装配需要，提高整体装配的可靠性。另一方面，当水路间隔板46与第一外端盖42一体成型时，可利用一体注塑方式制造，此时为方便开模，不宜一体注塑出第二中端盖45。
在壳体300上设置第三接管313，第三接管313与中端口451插接连接，水路间隔板46端部固定的步骤只有插接的过程，装配非常简单、省时，可靠性较高。在图5的 示例中，第二中端盖45上形成有第七插管452，第七插管452的管口形成上述中端口451。第七插管452可以插在第三接管313内，第七插管452也可以插在第三接管313外。为提高密封效果，第七插管452与第三接管313之间设有密封圈，第二中端盖45与水路间隔板46之间也设有密封圈。
在图2的示例中，第二中端盖45与第二外端盖44之间的距离较小，能使水流在经第一过滤件10时水压能达到微妙的平衡。即当水路间隔板46内侧水压大于外侧水压时，第二中端盖45可能被挤在第二外端盖44上，减缓第一过滤件10的过滤速度。当正常运转时，水流挤开第二中端盖45，正常朝向第二进出口102流动。
在一些具体示例中，第一容纳腔100内所有零件预先装配成一体件，即将第一过滤件10、第二过滤件20、第一内端盖41、第一外端盖42、第二内端盖43、第二外端盖44、第二中端盖45预先连接成一体成一体化前后置复合滤芯400。甚至第一接管311、第二接管312、第三接管313处的密封圈，也可以预先装配到第五插管432、第六插管442、第七插管452上。
这样的一体化前后置复合滤芯400，在装配时可直接插在过渡板331和第一瓶盖310之间，整机装配过程得到了大大简化。而且如果第一瓶盖310是可拆卸连接在瓶体330上的，那用户在使用后，也可以自行更换一体化前后置复合滤芯400，而且用户自己更换时的操作步骤也非常容易，提高了用户的换芯体验、减小了换芯成本。
可选地，如图5所示，第二中端盖45、第二内端盖43、第二外端盖44的顶部平齐。有利于第一瓶盖310对第一容纳腔100顶部的盖封。
在本申请的一些实施例中，如图2所示，第三过滤件30形成为筒形，第三过滤件30与第二容纳腔200的内壁之间限定出第五均布流道31，第四进出口302连通第五均布流道31，第三过滤件30的中心正对过渡口332设置。筒形的第三过滤件30的内、外两侧分别形成不同的均布流道，一个为第三过滤件30待净化的流体，另一个为第三过滤件30净化后的流体，其中第三过滤件30中间的流通腔与过渡口332连通。
从第三过滤件30、第五均布流道31的布局来看，水流在穿过第三过滤件30时，大部分沿第三过滤件30的径向穿过，穿过路径短、流通量大。而且径向穿过时对过滤件表面的杂质具有冲刷作用，水流更易冲开杂质后穿过过滤件。而过滤件在进水时大部分水流基本沿轴向流动，这样不仅有利于水流均布，也有利于将冲刷下的杂质带到轴向一端，避免杂质堵在过滤件表面。
在本申请的一些示例中，如图5所示，复合滤芯组件1000还包括中心管33，中心管33设在第三过滤件30的中心内，中心管33的管壁上设有过滤水入孔，中心管33 内可为经第三过滤件30过滤后的纯水。
如图2、图5所示，壳体300上设有第五进出口301，第三过滤件30的中心内设有废水集管34，废水集管34与第五进出口301相连，废水集管34可以排出离子浓度较高的废液。
本申请限定有“第一”、“第二”、“第三”、“第四”、“第五”的特征可以明示或者隐含地包括一个或者更多个该特征，用于区别描述特征，无顺序之分，无轻重之分。
在一些具体实施例中，如图10-图12所示，中心管33、多个废水集管34和过滤膜32构成反渗透膜元件，可以为螺旋卷式反渗透膜元件，也可以为其他的卷式反渗透膜元件。下述反渗透膜元件以螺旋卷式反渗透膜元件的构造进行说明。
过滤膜32为多组，过滤膜32为反渗透膜片袋，反渗透膜片袋具有第一部分和第二部分，每一废水集管34和中心管33被至少一个反渗透膜片袋的第一部分隔开，多个反渗透膜片袋的第二部分形成围绕在中心管33及多个废水集管34组成的管组的周围，形成多层薄膜组件。多层薄膜组件为多个反渗透膜片袋卷制出的圆筒，该圆筒构成上述第三过滤件30。
流到第五均布流道31内的水，沿径向朝向中心管33的方向流动，流动的过程中水分子不断地渗透到反渗透膜片袋内，渗透到反渗透膜片袋内的纯净水部分沿径向继续朝向中心管33流动，部分受膜延伸方向影响沿螺旋方向朝向中心管33流动。最终纯净水从过滤水入孔进入中心管33，然后朝向过渡口332流动。而未渗透进反渗透膜片袋的水则集中到废水集管34处，剩下的废水则流向废水集管34的管壁上的废水集孔，废水集管34与第五进出口301相连，从第五进出口301处排出废水。
反渗透膜元件采用侧流节水膜，通过侧流进水，提高膜表面流速，保证较高的纯水回收率，以及膜袋较长的使用寿命。
可选地，第三过滤件30也可为超滤膜组件，具体可选用市场上已有的超滤膜滤芯。超滤过滤以及反渗透过滤的原理和技术均为本领域技术人员所熟知的现有技术，在本申请中不再赘述。另外，当第三过滤件30采用上述过滤件时，需要对液体提前进行加压再泵入第四进出口302中。
在本申请的一些实施例中，如图2、图5、图6、图7所示，复合滤芯组件1000还包括：第三端盖47，第三端盖47配合在第三过滤件30的朝向过渡口332的端面上，第三端盖47的两端设有相通的第二插管471和第三插管472，第二插管471插接在过渡口332内，第三插管472与中心管33相连。这里，第三端盖47封闭了第三过滤件 30的顶部，且为第三过滤件30提供了顶部的支撑连接，有效防止了第三过滤件30两侧的待净化的液体和已经净化后的液体在顶部相串。
其中，第三端盖47通过第二插管471插接在过渡口332内，一方面便于密封，防止第二容纳腔200内高压水未经过滤膜32过滤就流向过渡口332，另一方面利用过渡口332定位，提高定位精度的同时还能降低装配难度。
第三端盖47通过第三插管472插接在中心管33上，一方面利用第三插管472与中心管33管壁之间的面接触实现密封，另一方面方便中心管33的定位与安装，防止长期使用后中心管33歪斜、漏水。
另外，如图7所示，第三端盖47上设有第一定位凸起473，第一定位凸起473与废水集管34对应设置，废水集管34的一端插在第一定位凸起473上，此第一定位凸起473具有一定的防呆配合功能，方便第三端盖47与废水集管34定位安装，防止长期使用后废水集管34歪斜。
可选地，如图6、图7所示，第三端盖47的周壁上设有第一装配定位结构474，多个第一装配定位结构474沿周向间隔开设置，多个第一装配定位结构474止抵在壳体300的内壁上，提高第三过滤件30在第二容纳腔200内的对中度，避免第三过滤件30整体歪斜导致无法在过渡口332处良好配合。
有利地，第二插管471与过渡口332之间设有密封圈。
在本申请的一些实施例中，如图2、图5、图8、图9所示，复合滤芯组件1000还包括：第四端盖48，第四端盖48配合在第三过滤件30的远离过渡口332的端面上，第四端盖48上设有分别与废水集管34、第五进出口301相连的排废口482。
另外，如图9所示，第四端盖48的中部凸出设有第二定位凸起483，第二定位凸起483与中心管33对应设置，中心管33的一端插在第二定位凸起483上，此第二定位凸起483具有封堵功能，也具有一定的防呆配合功能，方便第四端盖48与中心管33定位安装，防止长期使用时中心管33歪斜，且可封闭中心管33下部，防止中心管33中的液体流出。
可选地，如图8、图9所示，第四端盖48的周壁上设有第二装配定位结构484，多个第二装配定位结构484沿周向间隔开设置，多个第二装配定位结构484止抵在壳体300的内壁上，提高第三过滤件30在第二容纳腔200内的对中度，避免第三过滤件30整体歪斜导致无法在第五进出口301处良好配合。
在图2中，第四端盖48封闭了第三过滤件30和中心管33的底部，且为第三过滤件30提供了底部的密封和支撑，有效地防止了第三过滤件30两侧的待净化的液体和已 经净化后的液体在底部相串，保证了第三过滤件30的过滤效果。废水集管34连通了排废口482和第五进出口301，使高盐度的废水足够快地流出壳体300。
在本申请的一些示例中，如图5所示，壳体300的内周壁上设有第四接管321，在图5中第二瓶盖320上设有上述第四接管321，第四接管321连通第五进出口301，第四端盖48上设有第四插管481，第四插管481与第四接管321插接相连。第四插管481与第四接管321插接相连保证了高浓度的废液和待净化的液体之间不发生串流。另外，保证了第四端盖48稳定地连接在壳体300的底部，防止第三过滤件30在过滤过程中位置发生变化。
可选地，第四插管481和第四接管321之间设有密封圈，以提高密封度。
在一些具体示例中，第二容纳腔200内所有零件预先装配成一体件，即中心管33、废水集管34、过滤膜32、第三端盖47、第四端盖48预先连接成一体化反渗透滤芯。甚至过渡口332、第四接管321处的密封圈，也可以预先装配到第二插管471、第四插管481上。
这样的一体化反渗透滤芯，在装配时可直接插在过渡板331和第二瓶盖320之间，整机装配过程得到了大大简化。而且如果第二瓶盖320是可拆卸连接在瓶体330上的，那用户在使用后，也可以自行更换一体化反渗透滤芯，而且用户自己更换时的操作步骤也非常容易，提高了用户的换芯体验，降低了换芯成本。
在本申请的一些实施例中，如图2、图5所示，第一容纳腔100内设有间隔支架49，间隔支架49设在第二均布流道12内。间隔支架49使第二均布流道12保持特定的宽度，以及特定的形状，保证了良好的流体流通性能。间隔支架49设在第一过滤件10的内周面和水路间隔板46的外周面之间，可分别支撑第一过滤件10和水路间隔板46，使两者之间保持固定的相对距离，使第二均布流道12保持特定的形状，保证流道具有一定的宽度，保证良好的流体流通性能。
可选地，间隔支架49为筒形且为格栅状，间隔支架49套在水路间隔板46的外侧。格栅状的间隔支架49节省材料，使支撑骨架更轻，有利于滤芯的轻质化设计；便于第二均布流道12内的流体的流通，流动阻力小；便于间隔支架49的安装固定。可选地，间隔支架49与第一过滤件10共同卷制而成。间隔支架49可保证第一过滤件10整体卷制的松紧度及强度。
在本申请一些示例中，第一过滤件10为由无纺布、聚丙烯层、碳纤维卷制而成的 卷筒，使用寿命较长。当用于自来水的过滤时，可初步去除泥沙、铁锈及余氯。当然，第一过滤件10也可以仅由其中一种或两种材料的滤层卷制而成，这里不做具体限制。
在本申请一些示例中，第二过滤件20为中空的碳棒。可用于自来水的终滤，碳棒可滤除水体中异味、有机物、胶体、铁及余氯等，使第二过滤件20控制出水后的饮用水水质条件，改善口感。当然，第二过滤件20也可由活性炭颗粒、滤网及框架组合而成，不局限于碳棒的设置形式。另外，碳过滤介质，也可以更换成KDF55处理介质(高纯铜/锌合金介质)，通过电化学反应去除水中的余氯、减少矿物结垢、减少氧化亚铁等悬浮固体物质、抑制微生物、去除重金属。
根据本申请实施例的一种前后置复合滤芯400，如图15、图16所示，包括：第二过滤件20、第一过滤件10、水路间隔板46、端盖组件40。
具体地，第二过滤件20形成为筒形，第二过滤件20内限定出第四均布流道22。第一过滤件10也形成为筒形，第一过滤件10套在第二过滤件20的外侧。第二过滤件20和第一过滤件10相嵌套，节省安装空间，集成度高。筒形的第二过滤件20和第一过滤件10方便加工制作，也便于两者之间嵌套和集成。
如图16所示，水路间隔板46套在第二过滤件20和第一过滤件10之间，水路间隔板46与第二过滤件20之间限定出第三均布流道21，水路间隔板46与第一过滤件10之间限定出第二均布流道12，第三均布流道21和第二均布流道12之间通过水路间隔板46隔开。水路间隔板46将第二过滤件20和第一过滤件10隔开，使两种过滤件的流道分开，工作时独立不发生干扰，可形成两个相互独立的净化水路。其中一个净化水路的出水可直接作为另一个净化水路的进水；也可以为其中一种净化水路的出水通到外部其他过滤组件过滤后，再作为另一个净化水路的进水。
端盖组件40配合在第一过滤件10的两端，端盖组件40上设有连通第四均布流道22的内端口431、连通第三均布流道21的过渡口332及连通第二均布流道12的外端口441。
其中，外端口441连通第二均布流道12，待处理的水(如自来水)可从第一过滤件10的外周面经第一过滤件10净化后进入到第二均布流道12中，并从外端口441中排出。待处理的水也可以从外端口441进入第二均布流道12中，再经第一过滤件10净化后流向第一过滤件10的外周侧后排出。
过渡口332连通第三均布流道21，第三均布流道21中通入另一水路的进水，并经第二过滤件20净化后进入到第四均布流道22中，然后从内端口431排出。另一水路的进水也可以从内端口431进入第四均布流道22，再经过第二过滤件20的净化后，从第 三均布流道21流过，并从过渡口332排出。
端盖组件40和水路间隔板46的配合，控制了前后置复合滤芯400的各个滤芯的过滤方向、进水方向和出水方向。
具体而言，水流在穿过第二过滤件20和第一过滤件10时，大部分沿前后置复合滤芯400的径向穿过，穿过路径短、流通量大，而且径向穿过时对滤芯表面的杂质具有冲刷作用，水流更易冲开杂质后穿过滤芯。而每个滤芯在进出水时大部分水流基本沿轴向流动，这样不仅有利于水流均布，也有利于将过滤件表面冲刷下的杂质带到前后置复合滤芯400的轴向一端，避免杂质堵在过滤件表面。
端盖组件40使第二过滤件20、第一过滤件10、水路间隔板46之间形成相对固定的独立流道，并形成了连通第四均布流道22的内端口431，形成了连通水路第二均布流道12的外端口441，形成了连通水路第三均布流道21的过渡口332；端盖组件40起到了支撑作用和密封作用。
前后置复合滤芯400利用端盖组件40将轴向两端支撑安装，利用水路间隔板46形成两个不同净化水路，前后置复合滤芯400可通过端盖组件40进行整体拆装，前后置复合滤芯400的安装及更换更加方便、快捷。这种前后置复合滤芯400，实现了小体积、大通量的一体化设计，既实现了整机的尺寸降低，对于用户来说，一体换芯提高了用户换芯体验也降低了用户换芯成本，同时对整机的制造工艺都有明显的帮助。
在本申请的一些实施例中，如图13、图16、图17所示，端盖组件40包括：第一内端盖41和第一外端盖42，第一内端盖41配合在第二过滤件20的一端且封闭第四均布流道22，第一外端盖42配合在第一过滤件10上且与水路间隔板46相连，第一外端盖42上设有过渡口332。第一内端盖41和第一外端盖42的结构与前述的结构相同，这里不做赘述。
在本申请的一些实施例中，如图14、图16、图18所示，端盖组件40还包括：第二内端盖43和第二外端盖44，第二内端盖43配合在第二过滤件20上，第二内端盖43上设有内端口431，第二外端盖44上设有外套在内端口431上的外端口441。第二内端盖43和第二外端盖44的结构与前述的结构相同，这里不做赘述。
在本申请的一些实施例中，如图16所示，端盖组件40还包括：第二中端盖45，第二中端盖45配合在水路间隔板46上，第二外端盖44与第二中端盖45之间限定出外端口441。第二中端盖45将第二均布流道12和第三均布流道21进一步分隔开来，且对第三均布流道21的顶部密封，防止第三均布流道21中的流体与其他流路中的流体相混。第二中端盖45的其他结构与前述的结构相同，这里不做赘述。
在一些具体示例中，前后置复合滤芯400内所有零件预先装配成一体件，即将第二过滤件20、第一过滤件10、第一内端盖41、第一外端盖42、第二内端盖43、第二外端盖44、第二中端盖45预先连接成一体成前后置一体化滤芯。甚至密封件50，也可以预先装配。
这样的前后置一体化滤芯，在装配时可直接插在壳体300内的托板和第一瓶盖310、第二瓶盖320之间，整机装配过程得到了大大简化。而且如果第一瓶盖310、第二瓶盖320是可拆卸连接在瓶体330上的，那用户在使用后，也可以自行更换前后置一体化滤芯400，而且用户自己更换时的操作步骤也非常容易，提高了用户的换芯体验、减小了换芯成本。
前后置复合滤芯400中的间隔支架49、第一过滤件10、第二过滤件20与前述的复合滤芯组件1000的相应结构相同，在此不做赘述。
根据本申请实施例的净水机2000，如图19所示，包括前述复合滤芯组件1000。净水机2000可用来净化自来水。
采用复合滤芯组件100有利于净水机2000整机的功能多样化，采用了复合滤芯组件100，实现了小体积、大通量的一体化设计，实现了整机的尺寸降低，一体化设计方便安装、更换，减少了连接管路的布置。对于用户来说，一体换芯提高了用户换芯体验也降低了用户换芯成本，同时对整机的制造工艺都有明显的帮助，可靠性高。
为更好理解本申请实施例的方案，下面结合图1-图12描述本申请的一个具体实施例中的复合滤芯组件1000的结构，结合图13-图18描述本申请的一个具体实施例中的前后置复合滤芯400的结构。
实施例1
下述具体实施例以净化自来水为例来讲述复合滤芯组件1000的三级过滤功能，并说明复合滤芯组件1000的高度集成化一体设计结构。另外，第一过滤件10以无纺布、聚丙烯层、碳纤维和间隔支架49卷制而成的卷筒型的初级过滤件为例进行说明；第三过滤件30以高节水的侧流反渗透节水膜作为中间过滤为例进行说明。第二过滤件20以圆筒形的中空碳棒作为终级过滤为例进行说明。
如图1、图2、图3、图4、图5所示，复合滤芯组件1000，整个复合滤芯组件1000常态下呈竖直状态装设。包括壳体300，壳体300包括两端敞口的瓶体330和封闭在两端的第一瓶盖310以及第二瓶盖320，每个瓶盖均与瓶体330通过相配的螺纹形成密封连接。在密封处增设密封件。第一瓶盖310上设有进自来水的第一进出口101，前置水 出水的第二进出口102，以及饮用水出水的第三进出口201。第二瓶盖320上设有反渗透的前置水进水的第四进出口302，以及反渗透的高盐度废水排水的第五进出口301。
如图2所示，壳体300的内部一体成型设有与筒壁垂直设置的过渡板331，过渡板331将壳体300沿轴向间隔开，形成第一容纳腔100和第二容纳腔200。过渡板331的中部沿轴向设有过渡口332。第一容纳腔100和第二容纳腔200之间通过过渡口332连通。
如图2所示，在第一容纳腔100中设有两组相套的过滤单元，即设在第一容纳腔100中心的带有筒形的第一过滤件10作为初级过滤单元，设在第一容纳腔100外侧的第二过滤件20作为终级过滤单元。第一过滤件10的轴向长度大于第二过滤件20的轴向长度。第一过滤件10和第二过滤件20之间通过设置筒形的水路间隔板46分隔。第一过滤件10与第一容纳腔100的内壁之间限定出环形的第一均布流道11，如图2所示，第一均布流道11与第一进出口101相连。水路间隔板46与第一过滤件10之间限定出环形的第二均布流道12，第二均布流道12连接第二进出口102。水路间隔板46与第二过滤件20之间限定出环形的第三均布流道21，第二过滤件20的远离第三均布流道21的一侧设有柱形的第四均布流道22。第三均布流道21连接过渡口332，第四均布流道22连接第三进出口201。
如图2、图5所示，第二过滤件20的上端设有第二内端盖43，第二过滤件20的下端设有第一内端盖41，第一内端盖41配合在第二过滤件20的朝向过渡口332的轴向端面上，以堵住第二过滤件20及第四均布流道22；第二内端盖43配合在第二过滤件20的远离过渡口332的轴向端面上，以堵住第二过滤件20，第二内端盖43上设有连通第三进出口201的内端口431，与此同时，内端口431连通第三均布流道21。第一过滤件10的上端设有第二外端盖44，第二外端盖44上设有外套在内端口431的外端口441；第一过滤件10的朝向过渡口332的轴向端面上设有第一外端盖42。第一外端盖42上一体成型有水路间隔板46，第一外端盖42堵住第一过滤件10及第三均布流道21的下部。第二外端盖44和第二内端盖43之间套有第二中端盖45，第二中端盖45配合在水路间隔板46的周壁上，第二中端盖45上形成有中端口451，确切地说，第二外端盖44与第二中端盖45之间限定出外端口441，外端口441连通第二均布流道12。第二中端盖45将第二均布流道12和第三均布流道21进一步分隔开来，且对第三均布流道21的顶部密封，防止第三均布流道21中的流体与其他流路中的流体相混。第二中端盖45与第三接管313之间加设密封件，第二内端盖43和第一接管311之间加设密封件。第二中端盖45在受到朝向第二外端盖44的作用力时与第二外端盖44相接触并封住外端口441，当第二均布流道12内水流挤开第二中端盖45时与外端口441连通。
如图5所示，壳体300的内周壁上朝向第二内端盖43设有第一接管311，壳体300的内周壁上朝向第二外端盖44设有第二接管312，壳体300的内周壁上朝向第二中端盖45设有第三接管313，第二中端盖45的中端口451与第三接管313插接连接。第三接管313和第二外端盖44之间形成连接第二进出口102的通道。
如图2、图11所示，筒形的第三过滤件30设在第二容纳腔200内。第三过滤件30与第二容纳腔200的内壁之间限定出第五均布流道31，第三过滤件30的中心的中心管33正对过渡口332设置。中心管33的管壁上设有过滤水入孔，第三过滤件30由多个反渗透膜片袋组成，反渗透膜片袋具有第一部分和第二部分，每一废水集管34和中心管33被至少一个反渗透膜片袋的第一部分隔开，多个反渗透膜片袋的第二部分形成围绕在中心管33及多个废水集管34组成的管组的周围，形成多层螺旋卷式薄膜组件。
如图10所示，中心管33的周围呈环形并设有五根废水集管34，各废水集管34穿过第二端盖320与第五进出口301相连。每根废水集管34对应一个膜袋。
如图2、图5、图6、图7、图8、图9所示，第三过滤件30的两端分别设有第三端盖47和第四端盖48，第三端盖47封在第三过滤通道32和废水流通腔的朝向第一容纳腔100的一端，第四端盖48封在第三过滤通道32和过滤水流通腔的远离第一容纳腔100的一端。第三端盖47的两端设有相通的第二插管471和第三插管472，第二插管471插接在过渡口332内，第三插管472与中心管33相连。第三端盖47上设有与废水管34防呆配合的第一定位凸起473。第三端盖47的周壁设有第一装配定位结构474与第三过滤件30的顶部配合装配。第四端盖48上设有与废水集管34相连的排废口482。壳体300的内周壁上朝向第四端盖48设有第四接管321，第四接管321连通第五进出口301，第四端盖48上设有第四插管481，第四插管481与第四接管321插接相连。第四端盖48上设有与中心管33封堵配合的第二定位凸起483。第四端盖48的周壁上设有第二装配定位结构484与第三过滤件30的底部配合装配。第三端盖47与第一外端盖42之间加设密封圈。第一外端盖42与过渡口332之间加设密封圈。
整个自来水的过滤过程为，自来水从第一进出口101进入第一均布流道11，并向径向内侧流动，经过第一过滤件10的过滤后流向第二均布流道12，并从上部的第二进出口102作为前置水流出。流出后的前置水经过加压并泵入第四进出口302，并在第五均布流道31中均布，从侧流反渗透节水膜的侧向流入并由第三过滤件30过滤，高盐度的废水由废水集管34收集并从第五进出口301排出，纯水则由中心管33向上收集穿过过渡口332。纯水从过渡口332进入第三均布流道21，并沿着径向经第二过滤件20过滤，进入第四均布流道22，并从第三进出口201流出饮用。
实施例2
如图15、图16所示，一种前后置复合滤芯400，包括呈筒形的第一过滤件10和套在第一过滤件10内部的筒形的第二过滤件20、设置在第二过滤件20和第一过滤件10之间的水路间隔板46、及设置在第二过滤件20和第一过滤件10两端的端盖组件40。
如图16所示，第二过滤件20、第一过滤件10、水路间隔板46同轴设置，第二过滤件20内限定出第四均布流道22，水路间隔板46与第二过滤件20之间限定出第三均布流道21，水路间隔板46与第一过滤件10之间限定出第二均布流道12，第三均布流道21和第二均布流道12之间通过水路间隔板46隔开。
第二均布流道12内设有筒形且呈格栅状的间隔支架49，间隔支架49套在水路间隔板46的外侧，间隔支架49与第一过滤件10共同卷制而成。
第一过滤件10的过滤层包括无纺布层、聚丙烯层层、碳纤维层卷制的复合层，第一过滤件10作为自来水的初级的过滤滤芯。
第二过滤件20为中空的碳棒，作为自来水作为饮用水前的终级过滤。
端盖组件40上分别设有连通第四均布流道22的内端口431、连通第三均布流道21的过渡口332及连通第二均布流道12的外端口441。
如图13、图14、图16、图17、图18所示，端盖组件40包括设在前后置复合滤芯400底部的第一内端盖41和第一外端盖42，以及设在前后置复合滤芯400顶部的第二内端盖43、第二外端盖44、第二中端盖45。
如图13、图17所示，第一内端盖41配合在第二过滤件20的底端且封闭第四均布流道22，第一内端盖41的周边设有向上的第一翻边411，第一翻边411的内侧面与第二过滤件20的外周面接触。第一内端盖41上设有伸入到第四均布流道22中的第一凸缘412，第一凸缘412的外周面与第二过滤件20的内周面接触。
如图13所示，第一外端盖42配合在第一过滤件10的底端。第一外端盖42上设有第一凹槽424，第一过滤件10和间隔支架49的底部配合在第一凹槽424中。第一外端盖42中部向上凸出形成凸台422，凸台422与第一内端盖41之间留有间隙。凸台422的下部向下延伸形成第一外接口423，第一外接口423内形成有朝向第一内端盖41方向开口的过渡口332。过渡口332正对第一内端盖41设置，第一内端盖41在受到朝向第一外端盖42的作用力时与第一外端盖42相接触，当过渡口332进水挤开第一内端盖41时与第三均布流道21连通。第一外端盖42与水路间隔板46为一体成型件。第一外接口423外设有密封件50。
如图14、图18所示，第二内端盖43配合在第二过滤件20上，第二内端盖43的周 边设有向下的第二翻边433，第二翻边433的上端外露在第三均布流道21中，第二翻边433的内侧面与第二过滤件20的外周面接触。第二内端盖43上设有伸入到第四均布流道22中的第二凸缘434，第二凸缘434的外周面与第二过滤件20的内周面接触。第二内端盖43的中部向上延伸形成内端口431。
第二外端盖44配合在第一过滤件10的顶部，第二外端盖44上设有第二凹槽443，第一过滤件10和间隔支架49的顶部配合在第二凹槽443中，第二外端盖44中部向上凸出形成第二外接口444，第二外接口444的顶部与内端口431的顶部平齐，内端口431和第二外接口444在径向方向上间隔设置。
第二中端盖45配合在水路间隔板46上，第二外端盖44与第二中端盖45之间限定出中端口451。第二中端盖45的上部延伸并与第二外接口444的顶部平齐。第二中端盖45的外部设有密封件50。
当自来水从第一过滤件10的外周壁经过初次净化进入到第二均布流道12后，由外端口441出水。外端口441和过渡口332之间可以连接其他的滤芯组件，增加一次水质净化，再进入到过渡口332；也可以为直接由管道连通，形成串联的两级滤芯。最终经过初级过滤的自来水进入到第二过滤件20外侧的第三均布流道21中，通过第二过滤件20过滤后的饮用水进入到第四均布流道22中，并由内端口431向外流出饮用。
在本申请的描述中，需要理解的是，术语“中心”、“长度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“顶”、“底”、“内”、“外”、“轴向”、“径向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
根据本申请实施例的复合滤芯组件1000、前后置复合滤芯400和净水机200的其他构成例如各个过滤组件的过滤功能、各过滤组件的材质的选择、各个过滤组件的排列顺序对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料 或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (28)

  1. 一种复合滤芯组件，其特征在于，包括：
    壳体，所述壳体内限定出第一容纳腔和第二容纳腔，所述第一容纳腔和所述第二容纳腔之间通过过渡板间隔开，所述过渡板上设有过渡口，所述壳体上设有第一进出口、第二进出口、第三进出口和第四进出口；
    第一过滤件，所述第一过滤件设在所述第一容纳腔内，所述第一过滤件与所述第一容纳腔的内壁之间限定出第一均布流道，所述第一均布流道与所述第一进出口相连；
    第二过滤件，所述第二过滤件设在所述第一容纳腔内；
    水路间隔板，所述水路间隔板间隔在所述第一过滤件和所述第二过滤件之间，所述水路间隔板与所述第一过滤件之间限定出第二均布流道，所述水路间隔板与所述第二过滤件之间限定出第三均布流道，所述第二过滤件的远离所述第三均布流道的一侧设有第四均布流道，所述第二均布流道连接所述第二进出口，所述第三均布流道和所述第四均布流道中的一个连接所述第三进出口，所述第三均布流道和所述第四均布流道中的另一个连接所述过渡口；
    第三过滤件，所述第三过滤件设在所述第二容纳腔内。
  2. 根据权利要求1所述的复合滤芯组件，其特征在于，所述第一过滤件、所述水路间隔板和所述第二过滤件为依次套设的筒形，所述第二过滤件的中心腔为所述第四均布流道。
  3. 根据权利要求1或2所述的复合滤芯组件，其特征在于，还包括：第一内端盖，所述第一内端盖配合在所述第二过滤件的朝向所述过渡口的轴向端面上，以堵住所述第二过滤件及所述第四均布流道。
  4. 根据权利要求3所述的复合滤芯组件，其特征在于，还包括：第一外端盖，所述第一外端盖配合在所述第一过滤件的朝向所述过渡口的轴向端面上，所述水路间隔板连接在所述第一外端盖上，以堵住所述第一过滤件及所述第二均布流道。
  5. 根据权利要求4所述的复合滤芯组件，其特征在于，所述第一外端盖上设有第一插管，所述第一插管插接在所述过渡口内，所述第一插管与所述过渡口的内壁之间密封配合。
  6. 根据权利要求4所述的复合滤芯组件，其特征在于，所述过渡口正对所述第一内端盖设置，所述第一内端盖在受到朝向所述第一外端盖的作用力时与所述第一外端盖相接触，当所述过渡口进水挤开所述第一内端盖时与所述第三均布流道连通。
  7. 根据权利要求4、5或6所述的复合滤芯组件，其特征在于，所述水路间隔板与 所述第一外端盖为一体成型件。
  8. 根据权利要求1～7中任一项所述的复合滤芯组件，其特征在于，还包括：第二内端盖和第二外端盖，所述第二内端盖配合在所述第二过滤件的远离所述过渡口的轴向端面上，以堵住所述第二过滤件，所述第二内端盖上设有连通所述第三进出口的内端口，所述内端口连通所述第三均布流道，
    所述第二外端盖配合在所述第一过滤件的远离所述过渡口的轴向端面上，以堵住所述第一过滤件，所述第二外端盖上设有外套在所述内端口的外端口。
  9. 根据权利要求8所述的复合滤芯组件，其特征在于，所述壳体的内周壁上设有第一接管、第二接管，所述第二内端盖的所述内端口与所述第一接管插接连接，所述第二外端盖的所述外端口与所述第二接管插接连接。
  10. 根据权利要求8或9所述的复合滤芯组件，其特征在于，所述壳体的内周壁上设有第三接管，所述第一容纳腔内还设有第二中端盖，所述第二中端盖配合在所述水路间隔板的周壁上，所述第二中端盖上设有外套在所述内端口的中端口，所述第二中端盖的所述中端口与所述第三接管插接连接，所述第二外端盖与所述第二中端盖之间限定出所述中端口，所述中端口连通所述第二均布流道。
  11. 根据权利要求10所述的复合滤芯组件，其特征在于，所述第二中端盖在受到朝向所述第二外端盖的作用力时与所述第二外端盖相接触并封住所述中端口，当所述第二均布流道内水流挤开所述第二中端盖时与所述中端口连通。
  12. 根据权利要求1～11中任一项所述的复合滤芯组件，其特征在于，所述第一过滤件为由无纺布、聚丙烯层、碳纤维卷制而成的卷筒。
  13. 根据权利要求1～12中任一项所述的复合滤芯组件，其特征在于，所述第三过滤件形成为筒形，所述第三过滤件与所述第二容纳腔的内壁之间限定出第五均布流道，所述第四进出口连通所述第五均布流道，第三过滤件的中心正对所述过渡口设置。
  14. 根据权利要求13所述的复合滤芯组件，其特征在于，所述壳体上设有第五进出口，所述复合滤芯组件还包括反渗透膜元件，所述反渗透膜元件包括：中心管组和多个反渗透膜片袋，所述中心管组包括中心管和多个间隔开设置的废水集管，多个所述废水集管环绕所述中心管设置，所述中心管的管壁上设有过滤水入孔，所述废水集管的管壁上设有废水入孔；
    所述反渗透膜片袋具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水集管和所述中心管被至少一个所述反渗透膜片袋的第一部分隔开，多个所述反渗透膜片袋的所述第二部分形成围绕在所述中心管组的周围的多层薄膜组件；其中，所述多层薄膜组件构成所述第三过滤件，所述废水集管与所述第五进 出口相连，所述中心管与所述过渡口相连。
  15. 根据权利要求14所述的复合滤芯组件，其特征在于，还包括：第三端盖，所述第三端盖配合在所述反渗透膜元件的朝向所述过渡口的端面上，所述第三端盖的两端设有相通的第二插管和第三插管，所述第二插管插接在所述过渡口内，所述第三插管与所述中心管相连；
    第四端盖，所述第四端盖配合在所述反渗透膜元件的远离所述过渡口的端面上，所述第四端盖上设有分别与所述废水集管、所述第五进出口相连的排废口。
  16. 根据权利要求15所述的复合滤芯组件，其特征在于，所述壳体的内周壁上设有第四接管，所述第四接管连通所述第五进出口，所述第四端盖上设有第四插管，所述第四插管与所述第四接管插接相连。
  17. 根据权利要求1～16中任一项所述的复合滤芯组件，其特征在于，还包括间隔支架，所述间隔支架设在所述第二均布流道内，所述间隔支架为筒形且为格栅状，所述间隔支架套在所述水路间隔板的外侧。
  18. 一种前后置复合滤芯，其特征在于，包括：
    第二过滤件，所述第二过滤件形成为筒形，所述第二过滤件内限定出第四均布流道；
    第一过滤件，所述第一过滤件形成为筒形，所述第一过滤件套在所述第二过滤件的外侧；
    水路间隔板，所述水路间隔板套在所述第二过滤件和所述第一过滤件之间，所述水路间隔板与所述第二过滤件之间限定出第三均布流道，所述水路间隔板与所述第一过滤件之间限定出第二均布流道，所述第三均布流道和所述第二均布流道之间通过所述水路间隔板隔开；
    端盖组件，所述端盖组件配合在所述第一过滤件的两端，所述端盖组件上设有连通所述第四均布流道的内端口、连通所述第三均布流道的过渡口及连通所述第二均布流道的外端口。
  19. 根据权利要求18所述的前后置复合滤芯，其特征在于，还包括：间隔支架，所述间隔支架设在所述第二均布流道内。
  20. 根据权利要求19所述的前后置复合滤芯，其特征在于，所述间隔支架为筒形且为格栅状，所述间隔支架套在所述水路间隔板的外侧。
  21. 根据权利要求18或19所述的前后置复合滤芯，其特征在于，所述端盖组件包括：第一内端盖和第一外端盖，所述第一内端盖配合在所述第二过滤件的一端且封闭所述第四均布流道，所述第一外端盖配合在所述第一过滤件上且与所述水路间隔板相连，所述第一外端盖上设有所述过渡口。
  22. 根据权利要求21所述的前后置复合滤芯，其特征在于，所述过渡口正对所述第一内端盖设置，所述第一内端盖在受到朝向所述第一外端盖的作用力时与所述第一外端盖相接触，当所述过渡口进水挤开所述第一内端盖时与所述第三均布流道连通。
  23. 根据权利要求21或22所述的前后置复合滤芯，其特征在于，所述水路间隔板与所述第一外端盖为一体成型件。
  24. 根据权利要求18～23中任一项所述的前后置复合滤芯，其特征在于，所述端盖组件包括：第二内端盖和第二外端盖，所述第二内端盖配合在所述第二过滤件上，所述第二内端盖上设有所述内端口，所述第二外端盖上设有外套在所述内端口上的外端口。
  25. 根据权利要求24所述的前后置复合滤芯，其特征在于，所述端盖组件包括：第二中端盖，所述第二中端盖配合在所述水路间隔板上，所述第二外端盖与所述第二中端盖之间限定出所述外端口。
  26. 根据权利要求25所述的前后置复合滤芯，其特征在于，所述第二中端盖在受到朝向所述第二外端盖的作用力时与所述第二外端盖相接触并封住所述外端口，当所述第二均布流道内水流挤开所述第二中端盖时与所述外端口连通。
  27. 根据权利要求18～26中任一项所述的前后置复合滤芯，其特征在于，所述第一过滤件为由无纺布、聚丙烯层、碳纤维卷制而成的卷筒。
  28. 一种净水机，其特征在于，包括根据权利要求1～17中任一项所述的复合滤芯组件，或者包括根据权利要求18～27中任一项所述的前后置复合滤芯。
PCT/CN2019/114557 2018-10-31 2019-10-31 复合滤芯组件、前后置复合滤芯和净水机 WO2020088559A1 (zh)

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