WO2020088563A1 - 复合滤芯组件 - Google Patents

复合滤芯组件 Download PDF

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Publication number
WO2020088563A1
WO2020088563A1 PCT/CN2019/114561 CN2019114561W WO2020088563A1 WO 2020088563 A1 WO2020088563 A1 WO 2020088563A1 CN 2019114561 W CN2019114561 W CN 2019114561W WO 2020088563 A1 WO2020088563 A1 WO 2020088563A1
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WO
WIPO (PCT)
Prior art keywords
filter element
bottle
filter
cap
bottle body
Prior art date
Application number
PCT/CN2019/114561
Other languages
English (en)
French (fr)
Inventor
李杨敏
桂鹏
莫祖栋
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.)
Filing date
Publication date
Priority claimed from CN201811290399.6A external-priority patent/CN111115874A/zh
Priority claimed from CN201821786339.9U external-priority patent/CN209307047U/zh
Priority claimed from CN201811289179.1A external-priority patent/CN111115870A/zh
Priority claimed from CN201821795921.1U external-priority patent/CN209397002U/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 WO2020088563A1 publication Critical patent/WO2020088563A1/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

Definitions

  • the present application belongs to the technical field of water purification, and specifically relates to a composite filter element assembly.
  • 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, 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.
  • the whole machine occupies a large space, which is inconvenient to install and replace the filter element. When replacing, it is often necessary to replace the entire filter element with its external shell at the same time, which requires high replacement cost.
  • the bottle body When a variety of different filter elements are integrated in a bottle body, the bottle body is larger, and it is more difficult to connect the bottle body with the end cap, which is prone to leaks due to inadequate fit; The difficulty of processing and the rate of waste materials lead to poor shell integrity and unattractive appearance.
  • This application aims to solve one of the technical problems in the related art at least to a certain extent.
  • the purpose of the present application is to propose a composite filter element assembly that has good integrity, compact structure, and excellent end sealability.
  • a composite filter element assembly includes a housing, the housing includes a bottle body, two bottle caps, and a transition plate, both ends of the bottle body are open, and the transition plate is provided in the bottle body ,
  • the two bottle caps are respectively sealed and connected at both ends of the housing, and a first receiving cavity is defined between the bottle body and the transition plate, and one of the bottle caps, the bottle body and the A second accommodating cavity is defined between the transition plate and the other bottle cap, a transition port is provided on the transition plate;
  • a first filter group, the first filter group is provided in the first accommodation cavity;
  • a second filter group, the second filter group is provided in the second containing cavity, and the water in the second containing cavity is filtered by the second filter group and then flows to the first container through the transition port Cavity;
  • at least one of the bottle caps is connected to the bottle body by a spin welding structure; or at least one of the two bottle caps is removably connected to the bottle body, the openable and closable
  • two accommodation chambers are separated by providing a transition plate in the casing, and two filtration groups can be integrated and installed inside the casing, the filtration functions are diversified, and the filtration effect of tap water is increased.
  • the high integration and small overall volume greatly reduce the space required for installation.
  • the external piping required for connection between the two filter groups is reduced, so that the overall arrangement of the composite filter element assembly is compact, and the cost of materials is saved to a certain extent.
  • the transition plate can also support the filter groups on both sides, so that the filter groups are not easy to skew during long-term use.
  • the connection strength between the end bottle cap and the bottle body can be enhanced, so that the end bottle body connected by the spin welding structure can withstand higher water pressure and maintain Good sealing effect to prevent water leakage.
  • the use of spin welding structure can increase the overall strength and structural stability of the composite filter element assembly.
  • a portion where the end surface of the bottle body contacts the end surface of the bottle cap includes an inclined surface welding area, and the inclined surface is welded
  • the zone is a circular ring arranged around the central axis of the bottle body, and the inclined plane welding zone is the circumferential surface of the circular table.
  • At least one of the end face of the bottle body and the end face of the bottle cap is provided with a spin-welding overflow groove, and the spin-welding overflow groove is located radially outward of the inclined plane welding area.
  • one of the bottle body and the bottle cap is provided with the spin-welding overflow groove and an inner flange, and the inner flange is matched with the other of the bottle body and the bottle cap The inner surface of one.
  • both of the bottle caps are connected to the bottle body by spin welding.
  • the openable and closed bottle cap is connected to the bottle body by threads, or the openable and closed
  • the bottle cap is connected to the bottle body through a buckle; and a bottle body seal ring is provided between the openable and closable bottle cap and the bottle body.
  • the bottle body seal ring on the bottle cap is located on a side of the screw thread away from the transition plate.
  • a first end structure and a second end structure are respectively provided at both ends of the first filter group, and the first filter group is respectively connected to the first end structure and the second end structure
  • the transition plate and the bottle cap the first end structure is rotatable relative to the transition plate, the second end structure is rotatable relative to the bottle cap; the two ends of the second filter group are provided with third End structure and fourth end structure, the second filter group is respectively connected to the transition plate and the bottle cap through the third end structure and the fourth end structure, and the third end structure is opposite to the transition
  • the plate is rotatable, and the fourth end structure is rotatable relative to the bottle cap.
  • the housing is provided with a first inlet, a second inlet, and a third inlet.
  • the first filter group includes a first filter element, a second filter element, and a waterway partition plate.
  • the waterway Separator plates are respectively connected to the first end structure and the second end structure to separate the first accommodating cavity from the first low-pressure area and the second low-pressure area, and the first filter element is disposed on the first In a low pressure area, the water flowing in from the first inlet and outlet flows out of the second inlet and outlet after passing through the first filter element, and the second filter element is provided in the second low pressure area The water flowing into the transition port flows out of the third inlet and outlet after passing through the second filter.
  • the waterway partition plate is cylindrical
  • the second filter element is located on the inner side of the waterway partition plate
  • the first filter element is coated on the outer side of the waterway partition plate
  • the first filter element Both ends of the second filter and the second filter are blocked by the first end structure and the second end structure.
  • the first end structure includes: a first outer end cover, the first outer end cover is sealingly connected to one end of the waterway partition plate, and a communication port is provided on the first outer end cover
  • the first cannula of the second low-pressure area, the first cannula is inserted on the transition plate, and the end face of the first filter element is glued to the first outer end cover.
  • the second end structure includes: a second outer end cap, the second outer end cap is inserted into the bottle cap, and an end face of the first filter member is glued to the second outer end cap An end cap; a second middle end cap, the second middle end cap is hermetically connected to the peripheral wall of the waterway partition plate, and the second middle end cap is plugged on the bottle cap.
  • the second filter element is a cylindrical shape spaced apart from the waterway partition plate
  • the second end structure includes: a second inner end cover, and the second inner end cover is inserted into the On the bottle cap, one end face of the second filter element is glued to the second inner end cap;
  • the first end structure includes: a first inner end cap, and the other end face glue of the second filter element Adhere to the first inner end cover.
  • a fourth inlet and a fifth inlet are provided on the housing
  • the second filter group includes: a reverse osmosis membrane element
  • the reverse osmosis membrane element includes: a central tube group and a plurality of reverse osmosis Membrane bag
  • the central tube group includes a central tube and a plurality of spaced-apart wastewater headers, a plurality of the wastewater headers are arranged around the central tube, and filtered water inlets are provided on the wall of the central tube Hole
  • the waste water header is provided with a waste water inlet hole
  • 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 The waste water header and the central tube are 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 are formed around the central tube group Surrounding multi-layer membrane module; wherein, the water entering the second containing chamber from the fourth in
  • the axial ends of the circular cylinder rolled out of the reverse osmosis membrane bag are glued on the third end structure and the fourth end structure.
  • the other of the bottle caps is provided with a non-circular spin welding tool on the surface of the transition plate facing the side A fixed boss; when both the bottle caps are connected to the bottle body by a spin welding structure, a non-circular spin welding tool fixing boss is provided on at least one surface of the transition plate.
  • At least one circle of fixed-axis protrusions are provided on the outer circumferences of the first filter group and the second filter group, and the plurality of fixed-axis protrusions of each circle respectively stop against the housing On the inner wall.
  • FIG. 1 is a schematic diagram of an internal structure of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 2 is a bottom view of a composite filter element assembly according to an embodiment of this application.
  • FIG. 3 is a schematic view of the internal structure of FIG. 1 omitting the first filter element, the second filter element, and the third filter element.
  • FIG. 4 is a schematic structural view of the composite filter element assembly of an embodiment of the present application omitting the internal filter group.
  • FIG. 5 is a partially enlarged schematic view of area I in FIG. 4.
  • FIG. 6 is a partially enlarged schematic view of the spin-weld structure on the second end cap of area II in FIG. 4.
  • FIG. 7 is a partially enlarged schematic view of the spin-weld structure on the first end cap of area III in FIG. 4.
  • FIG. 8 is a schematic diagram of a bottom view of a transition plate of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 9 is a schematic structural plan view of a transition plate of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 10 is a top view of a third end cap according to an embodiment of the application.
  • FIG. 11 is a bottom view of a third end cap according to an embodiment of the application.
  • FIG. 12 is a bottom view of a fourth end cap according to an embodiment of the application.
  • FIG. 13 is a top view of a fourth end cap according to an embodiment of the application.
  • FIG. 14 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. 15 is a top view of a reverse osmosis membrane bag, a central tube, and a waste water header according to an embodiment of the present application.
  • 16 is a top view of a reverse osmosis membrane element in an embodiment of the present application.
  • FIG. 17 is a schematic diagram of the overall structure of a composite filter element assembly according to yet another embodiment of the present application.
  • FIG. 18 is a schematic diagram of the internal structure of FIG. 17.
  • Fig. 19 is a top view of Fig. 18.
  • Fig. 20 is a bottom view of Fig. 18.
  • FIG. 21 is a schematic view of the internal structure of FIG. 18 omitting the first filter element, the second filter element, and the third filter element.
  • the third import and export 201 The third import and export 201;
  • the third filter 30 The third filter 30; the fifth uniform flow channel 31; the reverse osmosis membrane bag 32; the central tube 33; the wastewater header 34;
  • Third end structure 47 second cannula 471; third cannula 472; first positioning protrusion 473; first fixed shaft protrusion 474;
  • Fourth end structure 48 fourth cannula 481; waste discharge port 482; second positioning protrusion 483; second fixed shaft protrusion 484;
  • Bottle cap 3001
  • First bottle cap 310 first takeover 311; second takeover 312; third takeover 313; handle 314;
  • Bottle body 3002
  • Transition plate 3003 transition port 3004; spin welding tool fixing boss 3005;
  • the composite filter element assembly 1000 according to an embodiment of the present application is described in detail below with reference to the drawings.
  • a composite filter element assembly 1000 includes a housing 300, a first filter group 1001, and a second filter group 2001.
  • the housing 300 includes a bottle body 3002, two bottle caps 3001, and a transition plate 3003. Both ends of the bottle body 3002 are open, and the transition plate 3003 is provided on the bottle body In 3002, two bottle caps 3001 are sealedly connected to both ends of the housing 300, respectively.
  • the bottle cap 3001 seals the housing 300 to form a whole, and protects the internal filter group structure from the external environment.
  • the first receiving cavity 100 is defined between the bottle body 3002 and the transition plate 3003 and one of the bottle caps 3001, and the first body cavity is defined between the bottle body 3002 and the transition plate 3003 and the other bottle cap 3001
  • the transition plate 3003 is provided with a transition port 3004.
  • the transition plate 3003 makes the first accommodating cavity 100 and the second accommodating cavity 200 form two generally spaced cavities in the housing 300, and the two cavities are only communicated through the transition port 3004.
  • one of the bottle caps 3001 is referred to as a first bottle cap 310, and the other bottle cap 3001 is referred to as a second bottle cap 320.
  • first receiving cavity 100 is defined between the bottle body 3002 and the transition plate 3003 and the first bottle cap 310
  • second receiving cavity 200 is defined between the bottle body 3002, the transition plate 3003 and the second bottle cap 320.
  • the two filter groups are a first filter group 1001 and a second filter group 2001, respectively.
  • the first filter group 1001 is provided in the first receiving chamber 100
  • the second filter group 2001 is provided in the second receiving chamber 200 Inside, the water in the second accommodating chamber 200 is filtered by the second filtering group 2001, and then flows to the first accommodating chamber 100 through the transition port 3004.
  • the composite filter element assembly 1000 can have more filtering functions, which increases the degree of integration, and there is no need to arrange the water filtered by the second filtering group 2001 to flow out of the first receiving chamber 100
  • the pipeline simplifies the layout of the pipeline.
  • At least one bottle cap 3001 of the two bottle caps 3001 is connected to the bottle body 3002 through a spin welding structure 400.
  • at least one bottle cap 3001 indicates that either the first bottle cap 310 is connected to the bottle body 3002 through the spin welding structure 400, or the second bottle cap 320 is connected to the bottle body 3002 through the spin welding structure 400, or the first Both the bottle cap 310 and the second bottle cap 320 are connected to the bottle body 3002 through the spin welding structure 400.
  • the so-called spin welding structure 400 refers to a connection structure formed by connecting the contact surfaces of the bottle cap 3001 and the bottle body 3002 after spin welding. Specifically, the bottle cap 3001 and the bottle body 3002 are kept relatively rotated, and the contact surfaces of the two are frictionally generated to generate heat, and the materials of the contact surfaces are heated and melted to be glued and connected together.
  • the connection strength between the end cap 3001 and the bottle body 3002 can be enhanced, so that the end connected by the spin welding structure 400
  • the bottle 3002 can withstand higher water pressure and maintain a good sealing effect.
  • spin welding the contact surface can be heated evenly for one week, and the contact surface can be heated and melted for one week to be adhesively connected, that is, to ensure that the contact surface forms a complete sealing ring for one week. As a result, it is possible to prevent the case 300 from leaking when the internal filter unit is operating.
  • the bottle body 3002 and the bottle cap 3001 connected by the spin welding structure 400 form a stable connection relationship, and the end cap 3001 is not easy to be misplaced, which provides stable support and limiting effect for the internally installed filter group, and is an external piping system
  • the connection provides a stable inlet or outlet, so that the overall structure of the composite filter element assembly 1000 is stable, high strength, and good reliability.
  • the structure at the end connected by the spin welding structure 400 is stable.
  • the filter at this end can be assembled into the corresponding accommodating cavity first, and the filter group installed between the bottle cap 3001 and the transition plate 3003 after being welded to the bottle body 3002 forms a stable structure, and the corresponding filter group and the bottle cap 3001 are not easy.
  • the occurrence of loosening and collision reduces the risk of shaking and damage of the filter group, and also reduces the chance of the bottle cap 3002 cracking.
  • the bottle cap 3001, which can be connected to the bottle body 3002 on the other side, is convenient for replacing the filter group in the corresponding cavity on the side. This design form can meet the needs of local filter material replacement and save the cost of filter material replacement.
  • the entire composite filter element assembly 1000 is made into an integral disposable filter element assembly, so as to realize an integral disposable filter element assembly of the filter material.
  • the external pipe required for connection between each filter group is greatly simplified, making the present
  • the application of the composite filter element assembly 1000 takes up less space, the overall layout is compact, and the internal volume of the cabinet of the user is saved; at the same time, the overall aesthetic performance is enhanced. All filter groups are set in the housing 300, and 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 portion where the end surface of the bottle body 3002 contacts the end surface of the bottle cap 3001 includes a sloped welding area 410, and the sloped welding area 410 is A circular ring is arranged around the central axis of the bottle body 3002, and the bevel welding area 410 is the circumferential surface of the circular table, that is, the bevel welding area 410 has a certain inclination in the radial direction, or the bevel welding area 410 is formed to remove the tapered tip Conical surface.
  • the peripheral surface of the circular table has a self-aligning effect, so that the bottle cap 3001 and the bottle body 3002 can maintain coaxial when rotating and welding, on the other hand, the peripheral surface of the circular table increases the contact area and increases the rotary welding The radial width of the adhesive connection surface formed by the connection, so that the torsion and bending resistance of the connection will be enhanced.
  • the molten material has a certain fluidity after the contact surface is heated and melted, and the provision of the bevel welding zone 410 can guide the molten material in a favorable direction, and it is best to direct the molten material toward the outside of the housing 300 In order to avoid the formation of welding slag and jacket formed by the cooling of the molten material inside the housing 300. And after the flow guide, the melt can be made more uniform, and the adhesive connection surface formed by the spin welding connection is wider.
  • a parallel inclined welding area 410 is formed between the bottle body 3002 and the bottle cap 3001. That is, when the bevel welding area 410 inclined from top to bottom is formed on the bottle body 3002, the corresponding bottle cap 3001 also forms the bevel welding area 410 inclined from top to bottom. Otherwise, it can. It is convenient to form a seamless joint between the bottle body 3002 and the bottle cap 3001 after welding, which is beneficial to improve the local welding strength.
  • the bottle body 3002 is kept in a vertical position during spin welding, and when spin welding a certain bottle cap 3001, the bevel welding area 410 of the bottle cap is kept in a state where the upper diameter is small and the lower diameter is large.
  • the material is directed toward the outside of the housing 300.
  • At least one of the end surface of the bottle body 3002 and the end surface of the bottle cap 3001 is provided with a spin-welding overflow groove 420, which is located radially outward of the bevel welding area 410.
  • the bottle cap 3001 is located above the bottle body 3002 and the upper end diameter of the beveled welding zone 410 between the two is small and the lower end diameter is large, it is preferable to form the spin welding overflow groove 420 on the bottle body 3002. If the bottle body 3002 is located above the bottle cap 3001, and the sloped welding zone 410 therebetween has a small upper end diameter and a large low end diameter, it is preferable to form the spin weld flash tank 420 on the bottle cap 3001.
  • the spin welding overflow tank 420 can collect welding slag during the spin welding process, and the weld slag collected in the spin welding overflow tank 420 can increase local strength after solidification; the spin welding overflow tank 420 can also prevent the welding slag from overflowing to the shell
  • the outer surface of the body 300 prevents the formation of a mantle.
  • the inner edge of the spin weld flash tank 420 is connected to the edge of the largest diameter of the bevel welding zone 410.
  • one of the bottle body 3002 and the bottle cap 3001 is provided with a spin welding overflow groove 420 and an inner flange 430, and the inner flange 430 is matched with the other of the bottle body 3002 and the bottle cap 3001.
  • the inner surface of one when the bottle body 3002 is provided with the spin-weld overflow groove 420 and the inner flange 430, the inner flange 430 is fitted on the inner circumferential surface of the bottle cap 3001.
  • the screw cap overflow groove 420 and the inner flange 430 are provided on the bottle cap 3001, the inner flange 430 is fitted on the inner circumferential surface of the bottle body 3002.
  • the setting of the inner flange 430 enhances the local strength of the welding between the bottle body 3002 and the bottle cap 3001, and provides a limiting relationship between the inner circumferential surfaces of the two.
  • the inner flange 430 can also prevent the melt from flowing into the bottle body 3002 during spin welding.
  • the end surface of the inner flange 430 is higher than the smallest diameter edge of the bevel welding zone 410.
  • an internal overflow groove is provided between the inner flange 430 and the smallest diameter edge of the bevel welding zone 410 to further prevent the inflow of welding slag into The interior of the bottle body 3002 is contained in the cavity.
  • both bottle caps 3001 are connected to the bottle body 3002 by spin welding to form an integral disposable composite filter element assembly 1000.
  • a first end structure 401 and a second end structure 402 are respectively provided at both ends of the first filter group 1001, and the first filter group 1001 is connected to the transition plate 3003 and the bottle cap through the first end structure 401 and the second end structure 402, respectively At 3001, the first end structure 401 is rotatable relative to the transition plate 3003, and the second end structure 402 is rotatable relative to the bottle cap 3001.
  • Both ends of the first filter group 1001 are respectively limited between the bottle cap 3001 and the transition plate 3003, so that the first filter group 1001 is easy to install, has certain adjustability during installation, and does not skew as a whole after installation.
  • the first filter group 1001 When the first filter group 1001 is impacted by the water flow, the first filter group 1001 that can rotate relative to the bottle cap 3001 and the transition plate 3003 has a certain buffer movement space, and is not easily skewed due to too much water pressure. The water flow can be evenly distributed faster.
  • the two ends of the second filter group 2001 are respectively provided with a third end structure 47 and a fourth end structure 48.
  • the second filter group 2001 is connected to the transition plate 3003 and the bottle cap 3001 through the third end structure 47 and the fourth end structure 48, respectively.
  • the third end structure 47 is rotatable relative to the transition plate 3003, and the fourth end structure 48 is rotatable relative to the bottle cap 3001.
  • the two ends of the second filter group 2001 are respectively limited between the bottle cap 3001 and the transition plate 3003, so that the second filter group 2001 has a certain adjustability when installed, and the whole will not be skewed after installation.
  • the filter group is connected to the transition port 3004 on the transition plate 3003 and the inlet and outlet on the bottle cap 3001 through the end structure, the connection is very convenient, and unnecessary pipelines are reduced.
  • the end structure can be rotatably connected so as not to Damage to the filter group.
  • the end structure can be connected to the transition plate 3003 and the bottle cap 3001 more tightly.
  • a non-circular spin welding tool fixing boss 3005 is provided.
  • the non-circular shape may be a polygonal structure such as hexagon, pentagon, and quadrilateral.
  • the spin welding tool fixing boss 3005 can be positioned and connected to the external fixing tool, so that the bottle body 3002 does not rotate relative to the fixed tooling, so that the bottle body during the spin welding process There is no rotation between 3002 and fixed tooling, and it is more stable during the spin welding process.
  • the above embodiment is that at least one of the bottle caps 3001 is connected to the bottle body 3002 by the spin welding structure 400, including one bottle cap 3001 and the bottle body 3002 connected by the spin welding structure 400, and two bottle caps 3001 (first Both the bottle cap 310 and the second bottle cap 320 are connected to the bottle body 3002 through the spin welding structure 400.
  • the room includes a detachable connection between a bottle cap 3001 and a bottle body 3002, and two bottle caps 3001 (first bottle cap 310, second bottle cap 320) can be opened and closed with the bottle body 3002.
  • a composite filter element assembly 1000 according to an embodiment of the present application, as shown in FIGS. 17 and 18, includes a housing 300 and two filter groups (1001, 2001).
  • the housing 300 includes a bottle body 3002, two bottle caps 3001 and a transition plate 3003. Both ends of the bottle body 3002 are open, and the transition plate 3003 is provided in the bottle body 3002.
  • the two bottle caps 3001 are sealingly connected to both ends of the housing 300 respectively.
  • the bottle cap 3001 seals the housing 300 to form a whole, and protects the internal filter group structure from the external environment.
  • a first receiving cavity 100 is defined between the bottle body 3002 and the transition plate 3003 and one of the bottle caps 3001, and a second receiving cavity is defined between the bottle body 3002 and the transition plate 3003 and the other bottle cap 3001 200.
  • a transition port 3004 is provided on the transition plate 3003.
  • the transition plate 3003 makes the first accommodating cavity 100 and the second accommodating cavity 200 form two generally spaced cavities in the housing 300, and the two cavities are only communicated through the transition port 3004.
  • first bottle cap 310 one of the bottle caps 3001 is referred to as a first bottle cap 310
  • second bottle cap 320 the other bottle cap 3001 is referred to as a second bottle cap 320.
  • first receiving cavity 100 is defined between the bottle body 3002 and the transition plate 3003 and the first bottle cap 310
  • second receiving cavity 200 is defined between the bottle body 3002 and the transition plate 3003 and the second bottle cap 320.
  • the two filter groups are a first filter group 1001 and a second filter group 2001, respectively.
  • the first filter group 1001 is provided in the first receiving chamber 100
  • the second filter group 2001 is provided in the second In the accommodating chamber 200, after being filtered by the second filter group 2001, the water in the second accommodating chamber 200 flows to the first accommodating chamber 100 through the transition port 3004.
  • the composite filter element assembly 1000 can have more filtering functions, which increases the degree of integration, and there is no need to arrange the water filtered by the second filtering group 2001 to flow out of the first receiving chamber 100
  • the pipeline simplifies the layout of the pipeline.
  • At least one of the two bottle caps 3001 is removably connected to the bottle body 3002, and the filter group corresponding to the openable and closable bottle cap 3001 is removably connected between the bottle cap 3001 and the transition plate 3003.
  • the first bottle cap 310 may be removably connected to one end of the bottle body 3002, and the second bottle cap 320 and the bottle body 3002 may not be opened and closed.
  • the second bottle cap 3002 can be opened and closed at one end of the bottle body 3002, and the first bottle cap 310 and the bottle body 3002 cannot be opened and closed.
  • the first bottle cap 310 and the second bottle cap 320 each form an openable and closable connection relationship with the bottle body 3002.
  • the open and close bottle cap 3001 and the corresponding detachable filter set provide the possibility and convenience for the user to change the core independently. Compared with the traditional disposable filter element assembly, the replacement cost is reduced.
  • the form of the opening and closing design may be a form of covering, a form of screw connection, or a form of plug-in buckling, which is not specifically limited here.
  • each filter group communicates through an external pipe
  • only one filter group is provided in each housing, which greatly simplifies the external pipes required for connection between each filter group .
  • Making the composite filter element assembly 1000 of the present application occupy less space, the overall layout is compact, and the internal volume of the cabinet of the user is saved; at the same time, the overall aesthetic performance is enhanced. All filter groups are set in the housing 300, and only one set of positioning and installation structure is needed for the overall installation of the composite filter element assembly 1000, which is simple and time-saving to assemble.
  • the composite filter element assembly 1000 does not need to be completely discarded, forming an environmentally friendly filter assembly, saving the use cost and replacement of the filter group cost.
  • the cap 3001 at one end and the bottle body 3002 may be designed as a spin welding structure to form a fixed connection, that is, one of the cap 3001 or the bottle body 3002 is provided with a spin welding overflow groove , And spin welding flanging, and the other inner peripheral surface is welded in cooperation with the spin welding overflow groove and the spin welding flanging.
  • spin welding at one end can ensure the tightness of the composite filter element assembly 1000 at the end of the spin welding, and make the integrity of the composite filter element assembly 1000 stronger.
  • the internal filter group can be manually replaced through the bottle cap 3001 and the bottle body 3002 opened and closed at the other end.
  • the openable bottle cap 3001 is connected to the bottle body 3002 by a screw, and a bottle body seal is provided between the openable bottle cap 3001 and the bottle body 3002 ring. That is, one end of the bottle body 3002 and the bottle cap 3001 are provided with external threads, and the other is provided with matching internal threads.
  • the bottle sealing ring can ensure that the liquid inside the casing 300 does not overflow, and ensure that the end of the composite filter element assembly 1000 is sealed, thereby ensuring the effectiveness and reliability during filtration.
  • the openable bottle cap 3001 is connected to the bottle body 3002 by a buckle, and a bottle body seal ring is provided between the openable bottle cap 3001 and the bottle body 3002.
  • the snap-connected bottle body 3002 and bottle cap 3001 are easier to connect, making it easier to open and close between the bottle cap 3001 and the bottle body 3002.
  • the bottle cap 3001 and the bottle body 3002 of the present application can also be connected by a snap connection, that is, the end of the bottle body 3002 is provided with a buckle, and the first bottle cap 310 and the second bottle cap 320 at both ends of the bottle body 3002 are provided with card holes , So that the bottle body 3002 and the first bottle cap 310 and the second bottle cap 320 respectively form a clamping relationship.
  • a snap connection that is, the end of the bottle body 3002 is provided with a buckle, and the first bottle cap 310 and the second bottle cap 320 at both ends of the bottle body 3002 are provided with card holes , So that the bottle body 3002 and the first bottle cap 310 and the second bottle cap 320 respectively form a clamping relationship.
  • other easily detachable connection methods that can be thought of can also be used in this application, which is not limited here.
  • the bottle body seal ring on the bottle cap 3001 is located on the side of the thread away from the transition plate 3003.
  • the screw-connected bottle cap 3001 and the bottle body 3002 have a certain tightness. If liquid passes through the joint, it needs to leak out along the spiral joint of the two, so it is provided on the side away from the transition plate 3003 As the final sealing measure, the sealing ring increases the sealing effect and prevents the liquid inside the casing 300 from leaking out.
  • the provision of the sealing ring in this way also eases the pressure difference between the inside and outside when the core is changed, and prevents the water flow from splashing when the cap 3001 is opened. Specifically, there is a pressure difference between the inside and the outside of the housing 300.
  • the spiral between the bottle cap 3001 and the bottle body 3002 is slowly unscrewed, and the outside air gradually flows inward from the threaded gap. Since the sealing ring on the bottle cap 3001 is located on the side of the thread away from the transition plate 3003, the blocking of the sealing ring slows the entry of outside air, and the sealing ring is not easy to fall out during the opening process of the bottle cap 3001, thereby avoiding the cap opening process Water overflows.
  • a multi-ring bottle sealing ring is provided between the bottle cap 3001 and the bottle body 3002. Further enhance the sealing effect between the two.
  • a first end structure 401 and a second end structure 402 are provided at both ends of the first filter group 1001 respectively, and the first filter group 1001 passes through the first end structure 401 and the second end structure 402 respectively Connecting the transition plate 3003 and the bottle cap 3001, the first end structure 401 is rotatable relative to the transition plate 3003, and the second end structure 402 is rotatable relative to the bottle cap 3001.
  • the first filter group 1001 is connected to the transition port 3004 on the transition plate 3003 through the first end structure 401, and the first filter group 1001 is connected to the inlet and outlet on the bottle cap 3001 through the second end structure 402.
  • This connection is very convenient and reduces Unnecessary piping.
  • the process of closing or loosening the bottle cap 3001 through rotation may be necessary.
  • the first end structure 401 Relative to the transition plate 3003 is rotatable
  • the second end structure 402 is rotatable relative to the bottle cap 3001, so as not to damage the first filter group 1001.
  • the first end structure 401 and the transition plate 3003 can be connected more tightly, and the second end structure 402 can be connected more tightly to the bottle cap 3001.
  • Both ends of the first filter group 1001 are respectively limited between the bottle cap 3001 and the transition plate 3003, so that the first filter group 1001 is easy to install, has certain adjustability during installation, and does not skew as a whole after installation.
  • the first filter group 1001 When the first filter group 1001 is impacted by the water flow, the first filter group 1001 that can rotate relative to the bottle cap 3001 and the transition plate 3003 has a certain buffer movement space, and is not easily skewed due to too much water pressure. The water flow can be evenly distributed faster.
  • the two ends of the second filter group 2001 are respectively provided with a third end structure 47 and a fourth end structure 48.
  • the second filter group 2001 is connected to the transition plate 3003 and the bottle cap 3001 through the third end structure 47 and the fourth end structure 48, respectively.
  • the third end structure 47 is rotatable relative to the transition plate 3003, and the fourth end structure 48 is rotatable relative to the bottle cap 3001.
  • the two ends of the second filter group 2001 are respectively limited between the bottle cap 3001 and the transition plate 3003, so that the second filter group 2001 has a certain adjustability when installed, and the whole will not be skewed after installation.
  • the housing 300 is provided with a first inlet 101, a second inlet 102, a third At the inlet / outlet 201, the first filter group 1001 includes a first filter element 10, a second filter element 20, and a waterway partition plate 46.
  • the waterway partition plate 46 is connected to the first end structure 401 and the second end structure 402, respectively, so as to separate the first accommodating chamber 100 from the first low pressure area 1002 and the second low pressure area 1003 (as shown in FIGS. 3 and 18).
  • the first filter element 10 is provided in the first low-pressure area 1002, the water flowing in from the first inlet and outlet 101 passes through the first filter element 10 and flows out from the second inlet and outlet 102, and the second filter element 20 is provided in the second low-pressure area 1003 Inside, the water flowing in from the transition port 3004 passes through the second filter 20 and flows out from the third inlet 201.
  • 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.
  • the low-pressure region here indicates that the first filter element 10 and the second filter element 20 can work normally without additional external pressure during filtration.
  • the water pressure of the first low-pressure area 1002 and the second low-pressure area 1003 is less than or equal to the water pressure of the municipal water supply. Convenient tap water enters the entrance of the low-pressure area.
  • the water pressure in the first low-pressure zone 1002 is 0.1-0.4 MPa.
  • the tap water can easily enter the first low-pressure zone 1002 from the external pipe network system and be filtered by the first filter 10.
  • the waterway partition plate 46 is cylindrical, the second filter element 20 is located inside the waterway partition plate 46, and the first filter element 10 The outer cover is outside the waterway partition plate 46, and both ends of the first filter element 10 and the second filter element 20 are blocked by the first end structure 401 and the second end structure 402.
  • a first uniform flow channel 11 is defined between the first filter element 10 and the inner wall of the first accommodating cavity 100
  • a second uniform flow channel 12 is defined between the waterway partition plate 46 and the first filter element 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; .
  • a third uniformly distributed flow channel 21 is defined between the waterway partition plate 46 and the second filter element 20.
  • the first filter element 10, the waterway partition plate 46 and the second filter element 20 are in the form of a sleeve, and the second filter element
  • the central cavity of 20 is the fourth uniform flow 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 first end structure 401 includes: a first outer end cover 42, and a peripheral edge of one end of the first outer end cover 42 and the waterway partition plate 46 Sealed connection.
  • 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 The liquid to be purified on both sides of a filter element 10 and the purified liquid are connected in series at the bottom to ensure the filtering effect of the first filter element 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 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 first outer end cover 42 is provided with a first insertion tube 421 communicating with the second low-pressure area 1003, and the first insertion tube 421 is inserted into the transition plate 3003.
  • the first cannula 421 is inserted into the transition plate 3003, on the one hand, the transition port 3004 is further closed, preventing unnecessary liquid flow between the first accommodating chamber 100 and the second accommodating chamber 200; on the other hand, The flow channel connection between the second filter 20 and the second filter group 2001 is easier.
  • the end face of the first filter element 10 is glued to the first outer end cover 42. This 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.
  • the second end structure 402 includes: a second outer end cover 44 and a second middle end cover 45.
  • the second outer end cap 44 is inserted into the bottle cap 3001 (the first bottle cap 310 in FIGS. 1 and 18), and the end surface of the first filter 10 is glued to the second outer end cap 44.
  • 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, and separates the first inlet 101 and the second inlet 102 This effectively prevents 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 cap 44 is fitted on the axial end surface of the first filter element 10 away from the transition port 3004 to block the first filter element 10, and the second outer end cap 44 is provided with a plug connected to the bottle cap External port 441 on 3001.
  • 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 face 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 second outer end cap 44 is formed with a sixth cannula 442, 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.
  • first filter element 10 is inserted into the transition port 3004 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.
  • the second middle end cap 45 is hermetically connected to the peripheral wall of the waterway partition plate 46, and the second middle end cap 45 is inserted into the bottle cap 3001 (the first bottle cap 310 in FIGS. 1 and 18).
  • a third connecting pipe 313 is provided on the inner peripheral wall of the first bottle cap 310 toward the bottle body 3002, and a middle port 451 and a third connecting pipe are provided on the second middle end cap 45 313 plug connection.
  • 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 first bottle cap 310, and the third connecting tube 313 is plug-connected to the middle port 451, and the step of fixing the end of the waterway partition 46 is only a plug-in process.
  • the assembly is very simple, time-saving, and reliable high.
  • a seventh cannula 452 is formed on the second middle end cap 45, and the nozzle of the seventh cannula 452 forms the above-mentioned 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 relatively small, so that the water pressure when the water flows through the first filter 10 can reach a delicate balance. 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.
  • the second filter 20 has a cylindrical shape spaced apart from the waterway partition plate 46.
  • the third uniform flow channel 21 is formed between the cylindrical second filter 20 and the water channel partition 46.
  • the second end structure 402 further includes: a second inner end cap 43, and the second inner end cap 43 is inserted into the bottle cap 3001 (the first bottle cap 310 in FIGS. 1 and 18).
  • the plug-and-fit form is convenient for assembly.
  • the second inner end cap 43 is fitted on the axial end surface of the second filter element 20 away from the transition port 3004 to block the second filter element 20, and the third inner end cap 43 is provided with a third inlet The inner port 431 of the outlet 201.
  • 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 assembly 20 collects in the fourth uniform flow channel 22 and is discharged outward through the inner port 431.
  • the periphery of the second inner end cover 43 is provided with a downward burring, and the inner side of the burring is in contact with the outer peripheral surface of the second filter 20.
  • the second inner end cover 43 is provided with an inner flange extending into the fourth uniform flow channel 22, and the outer peripheral surface of the inner flange contacts the inner peripheral surface of the second filter 20.
  • the same arrangement of the inner flange and the outer flange makes the connection between the second inner end cap 43 and the second filter element 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.
  • one 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 first end structure 401 further includes: a first inner end cover 41, and the other end face of the second filter 20 is glued on the first inner end cover 41.
  • One end of the second filter element 20 is inserted into the first connecting pipe 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 second An outer end cap 42 is very closely spaced, corresponding to the other end of the second filter element 20 being 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.
  • the inner peripheral wall of the first bottle cap 310 of the housing 300 is provided with a first nozzle 311 and a second nozzle 312, and the inner port 431 of the second inner end cap 43 is
  • the first connection 311 is plug-in connected, and the outer port 441 of the second outer end cover 44 is connected to the second connection 312 in a plug-in manner.
  • 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.
  • a fifth insertion tube 432 is formed on the second inner end cap 43, and the nozzle of the fifth insertion tube 432 forms the above-mentioned inner port 431.
  • 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.
  • 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 pre-connected to be integrated into a front and rear integrated filter element. 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 a front-rear integrated filter element can be directly inserted between the transition plate 3003 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 3002, the user can also replace the front and rear integrated filter elements (filter element components in the low-pressure area) after use, and the operation steps when the user replaces them It is also very easy, which improves the user's core replacement experience and reduces the core replacement cost.
  • 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 disposed in the second receiving chamber 200 as a part of the second filter group 2001, that is, the third The filter 30 is located in the high-pressure area 2002.
  • 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 water pressure in the high-pressure area 2002 is 0.7-0.85Mpa.
  • the higher water pressure here is conducive to the filtration of the third filter element 30, and accelerates the speed of the water flow through the membrane, and provides more possibilities for the material selection of the third filter element 10, enhancing the filtration of the third filter element 30 ability.
  • a fourth inlet 302 and a fifth inlet 301 are provided on the housing 300.
  • the fourth inlet 302 is the inlet of the third filter 30
  • the fifth inlet 301 is the outlet of the third filter 30; conversely, when the fourth inlet 302 is the outlet of the third filter 30 At this time, the fifth inlet 301 is the water inlet of the third filter 30.
  • the third filter 30 is formed into a cylindrical shape, a fifth uniform distribution channel 31 is defined between the third filter 30 and the inner wall of the second receiving chamber 200, and the fourth inlet and outlet 302 communicate with the fifth uniform distribution flow In the channel 31, the center of the third filter 30 is directly opposite to the transition port 3004.
  • 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 3004.
  • the composite filter element assembly 1000 further includes a center tube 33.
  • the center tube 33 is disposed in the center of the third filter 30, and the center tube 33
  • the wall of the tube is provided with a filtered water inlet, and the central tube 33 may be pure water filtered by the third filter 30.
  • a fifth inlet 301 is provided on the housing 300, and a waste water header 34 is provided in the center of the third filter 30, and the waste water header 34 is The fifth inlet and outlet 301 are connected, and the waste water collecting pipe 34 can discharge the waste liquid with high ion concentration.
  • the second filtration group 2001 includes: a reverse osmosis membrane element
  • the reverse osmosis membrane element includes: a central tube group and a plurality of reverse osmosis membrane sheet bags 32, a central tube group It includes a central pipe 33 and a plurality of spaced wastewater headers 34.
  • the multiple wastewater headers 34 are arranged around the central pipe 33.
  • the wall of the central pipe 33 is provided with filtered water inlets, and the wastewater header 34 is provided on the wall With waste water inlet.
  • the reverse osmosis membrane bag 32 includes a plurality of sets of filtration membranes spirally wound.
  • the reverse osmosis membrane bag 32 has a first portion located inside the central tube group and a second portion located outside the central tube group, each waste water header 34 and central tube 33 are separated by at least one first portion of the reverse osmosis membrane bag 32
  • the second part of the plurality of reverse osmosis membrane bag 32 forms a multi-layer membrane module surrounding the central tube group.
  • the multi-layer membrane module is a cylinder wound by a plurality of reverse osmosis membrane bag 32, and the cylinder constitutes the third filter 30 described above.
  • the water entering the second accommodating chamber 200 from the fourth inlet and outlet 302 is filtered by the reverse osmosis membrane bag 32 and flows to the filtered water inlet hole, the wastewater header 34 is connected to the fifth inlet and outlet 301, and the central pipe 33 and the transition port 3004 Connected.
  • the water flowing from the fourth inlet and outlet 302 to the fifth uniform flow channel 31 passes through the reverse osmosis membrane bag 32 in the radial direction and flows in the direction of the central tube group.
  • water molecules continuously penetrate into In the reverse osmosis membrane bag 32, the part of the purified water that has penetrated into the reverse osmosis membrane bag 32 continues to flow toward the center tube 33 in the radial direction, and partly flows toward the center tube 33 in the spiral direction under the influence of the membrane extension direction.
  • the purified water enters the central tube 33 from the filtered water inlet hole, and then flows toward the transition port 3004.
  • the water that has not penetrated into the reverse osmosis membrane bag 32 is concentrated at the waste water header 34, and the remaining waste water flows to the waste water collector hole on the wall of the waste water header 34.
  • the reverse osmosis membrane element adopts a lateral flow water-saving membrane, and 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 reverse osmosis membrane bag 32.
  • 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.
  • At least one circle of fixed-axis protrusions is provided on the outer circumferences of the first filter group 1001 and the second filter group 2001, and the multiple fixed-axis protrusions of each circle respectively stop against the housing 300 On the inner wall.
  • the fixed-axis bump diagram of the first filter group 1001 is not shown.
  • the fixed axis protrusions of the second filter group 2001 are respectively provided on the third end structure 47 and the fourth end structure 48.
  • the fixed axis protrusions on the third end structure 47 are described as the first fixed axis in the following
  • the bump 474 describes the fixed-axis projection on the fourth end structure 48 as the second fixed-axis projection 484.
  • the setting of the fixed-axis protrusions causes the fixed-axis protrusions to align the filter group when the bottle cap 3001 rotates relative to the bottle body 3002, so as to ensure the coaxiality of the filter group and the bottle body 3002.
  • the axial ends of the reverse osmosis membrane element are connected to the third end structure 47 and the fourth end structure 48, respectively.
  • the third end structure 47 and the fourth end structure 48 are inserted into the transition plate 3003 and the bottle cap 3001, respectively.
  • the third end structure 47 and the fourth end structure 48 close the two ends of the reverse osmosis membrane element, so that the water between the different channels of the reverse osmosis membrane element does not cross-flow and does not interfere, ensuring the filtration effect of the reverse osmosis membrane element .
  • the assembly of the reverse osmosis membrane element is easy, and the assembly structure is stable, preventing long-term use Skew during the process.
  • the third end structure 47 is fitted on the end surface of the third filter 30 facing the transition port 3004, and the two ends of the third end structure 47 are provided with communication
  • the second cannula 471 and the third cannula 472, the second cannula 471 is inserted in the transition port 3004, and the third cannula 472 is connected to the central tube 33.
  • the third end structure 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 structure 47 is inserted into the transition port 3004 through the second cannula 471, on the one hand, it is convenient to seal, and prevents the high-pressure water in the second containing chamber 200 from flowing to the transition port 3004 without filtering by the reverse osmosis membrane bag 32
  • the use of the transition 3004 for positioning improves positioning accuracy while reducing assembly difficulty.
  • the third end structure 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.
  • a first positioning protrusion 473 is provided on the third end structure 47, and the first positioning protrusion 473 is provided 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 structure 47 and the waste water collection pipe 34, and prevents the waste water collection pipe 34 from skewing after long-term use.
  • a first fixed-axis protrusion 474 is provided on the peripheral wall of the third end structure 47, and a plurality of first fixed-axis protrusions 474 are spaced apart in the circumferential direction, and a plurality of first The certain shaft protrusion 474 stops against the inner wall of the housing 300 to increase the centering degree of the third filter 30 in the second accommodating chamber 200, so as to prevent the third filter 30 from being skewed as a whole and failing to be good at the transition port 3004 Cooperate.
  • a sealing ring is provided between the second cannula 471 and the transition port 3004.
  • the fourth end structure 48 of the composite filter element assembly 1000 fits in the remote transition of the third filter 30 On the end surface of the port 3004, the fourth end structure 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 structure 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 structure 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 fixed shaft protrusion 484 is provided on the peripheral wall of the fourth end structure 48, and a plurality of second fixed shaft protrusions 484 are spaced apart along the circumferential direction, and a plurality of The two fixed-axis protrusions 484 stop against the inner wall of the housing 300 to increase the centering degree of the third filter 30 in the second accommodating cavity 200, to prevent the third filter 30 from being skewed as a whole Good coordination.
  • the fourth end structure 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 the third filter
  • the liquid to be purified on both sides of the 30 and the purified liquid 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 is provided on the second bottle cap 320 in FIGS. 5 and 21.
  • the fourth connecting pipe 321 communicates with the fifth inlet and outlet 301
  • a fourth insertion pipe 481 is provided on the fourth end structure 48
  • the fourth insertion pipe 481 is connected to the fourth connecting pipe 321 in a plug-in manner.
  • 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 structure 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 an integral piece, that is, the central tube 33, the wastewater header 34, the reverse osmosis membrane bag 32, the third end structure 47, and the fourth end structure 48 are pre-connected Into an integrated reverse osmosis membrane filter. Even the sealing ring at the transition port 3004 and the fourth connection tube 321 can be pre-assembled to the second insertion tube 471 and the fourth insertion tube 481.
  • Such an integrated reverse osmosis membrane filter element can be directly inserted between the transition plate 3003 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 3002, the user can also replace the integrated reverse osmosis membrane filter element after use, and the operation procedure when the user replaces it is also very easy, which improves the user The core replacement experience reduces the core replacement cost.
  • 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.
  • 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 element 10 in the first filter group 1001 is described by taking a roll-type primary filter element wound by a nonwoven fabric, a polypropylene layer, carbon fiber, and a spacer 49 as an example; the second filter group 2001
  • the third filter element 30 in the description uses a high-water-saving lateral flow reverse osmosis water-saving membrane as an example of intermediate filtration.
  • the second filter 20 in the first filter group 1001 will be described by using a cylindrical hollow carbon rod as a final filter.
  • a composite filter element assembly 1000 As shown in FIGS. 1, 2, 3, and 4, a composite filter element assembly 1000, the entire composite filter element assembly 1000 is normally installed in a vertical state.
  • the case 300 includes a bottle body 3002 with open ends and a first bottle cap 310 and a second bottle cap 320 closed at both ends.
  • Each bottle cap 3001 and the bottle body 3002 are formed by a spin welding structure 400 Sealed connection.
  • FIGS. 1 and 4 are formed by a spin welding structure 400 Sealed connection.
  • the spin-welding structure 400 includes a beveled welding zone 410 that is a circumferential surface of a circular table, and the first bottle cap 310 and the second bottle cap 320 are respectively at the ends of the beveled welding zone 410
  • a spin-weld overflow groove 420 is provided, and an inner flange 430 fitted on the inner circumferential surface of the bottle body 3002 is provided at the beginning of the inclined surface welding area 410.
  • the first bottle cap 310 is provided with a first inlet and outlet 101 for tap water, a second inlet and outlet 102 for pre-water outlet, and a third inlet 201 for drinking water outlet.
  • the first bottle cap 310 extends laterally to form a handle 314, the first inlet 101, the second inlet 102, and the third inlet 201 are located on the side near the handle 314, and the second bottle cap 320 is provided with a reverse The fourth inlet and outlet 302 of the infiltration front water inlet and the fifth inlet and outlet 301 of the reverse osmosis high-salinity wastewater drainage.
  • the interior of the housing 300 is integrally formed with a transition plate 3003 that is perpendicular to the wall of the cylinder.
  • the transition plate 3003 axially separates the housing 300 to form a first receiving cavity 100 and a second receiving cavity 200 .
  • a transition port 3004 is provided in the middle of the transition plate 3003 in the axial direction.
  • the first accommodating chamber 100 and the second accommodating chamber 200 communicate with each other through a transition port 3004.
  • the transition port 3004 protrudes outward to form a non-circular spin welding tool fixing boss 3005, and the transition port 3004 is a circular via.
  • the first filter group 1001 includes a first filter element 10, a second filter element 20, and a water channel partition plate 46.
  • the water channel partition plate 46 is connected to the first end structure 401 and the second end structure 402, respectively, to connect
  • the first accommodating chamber 100 is spaced apart from the first low-pressure area 1002 and the second low-pressure area 1003.
  • the first filter element 10 is provided in the first low-pressure area 1002.
  • the second inlet and outlet 102 flow out, the second filter 20 is provided in the second low-pressure region 1003, and the water flowing in from the transition port 3004 flows out of the third inlet 201 after passing through the second filter 20.
  • first filter element 10 with a cylindrical shape provided in the center of the first receiving chamber 100 as a primary filtering unit is provided outside the first receiving chamber 100
  • the second filter element 20 serves as a final filter 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 accommodating cavity 100. As shown in FIG. 1, 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 distribution channel 21 is connected to the transition port 3004, and the fourth uniform distribution channel 22 is connected to the third inlet 201.
  • a second inner end cap 43 is provided on the upper end of the second filter element 20, and a first inner end cap 41 is provided on the lower end of the second filter element 20.
  • the second inner end cover 43 is provided with an inner port 431 communicating with the third inlet 201.
  • 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 3004 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 Port 451.
  • 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 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 second filter group 2001 is provided in the second receiving chamber 200
  • the second filter group 2001 includes a third filter 30, and a cylindrical third filter 30 is provided in the second accommodating 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 disposed directly opposite the transition port 3004.
  • the wall of the central pipe 33 is provided with filtered water inlet holes.
  • the third filter element 30 is composed of a plurality of reverse osmosis membrane bag 32, and the reverse osmosis membrane bag 32 has a first part and a second part, and each waste water collection pipe 34 It is separated from the central tube 33 by at least one first part of the reverse osmosis membrane bag 32, and the second part of the plurality of reverse osmosis membrane bags 32 is formed around the central tube 33 and a plurality of wastewater headers 34 , To form a multi-layer 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 reverse osmosis membrane bag 32.
  • the third filter element 30 is provided with a third end structure 47 and a fourth end structure 48 at both ends, and the third end structure 47 is sealed in the third filter channel 32 and the waste water circulation At the end of the cavity facing the first accommodating cavity 100, the fourth end structure 48 is sealed at the end of the third filter channel 32 and the filtered water circulation cavity away from the first accommodating cavity 100.
  • the two ends of the third end structure 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 3004, and the third cannula 472 is connected to the central tube 33.
  • the third end structure 47 is provided with a first positioning protrusion 473 which cooperates with the waste pipe 34 in a foolproof manner.
  • the peripheral wall of the third end structure 47 is provided with a first fixed-axis protrusion 474 to be fitted with the top of the third filter 30.
  • the fourth end structure 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 structure 48, 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 structure 48 Plug-in connection with the fourth connection 321.
  • the fourth end structure 48 is provided with a second positioning protrusion 483 which is blocked and matched with the central tube 33.
  • a second fixed shaft protrusion 484 is provided to cooperate with the bottom of the third filter 30.
  • a sealing ring is added between the third end structure 47 and the first outer end cover 42.
  • a sealing ring is added between the first outer end cover 42 and the transition port 3004.
  • 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 3004. Pure water enters the third uniform flow channel 21 from the transition port 3004, and is filtered by 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.
  • the case 300 includes a bottle body 3002 with two ends open, a first bottle cap 310 and a second bottle cap 320 closed at both ends, and each bottle cap 3001 and the bottle body 3002 form a seal by matching threads connection. Add bottle sealing ring at the seal.
  • the first bottle cap 310 is provided with a first inlet and outlet 101 for tap water, a second inlet and outlet 102 for pre-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 3003 that is perpendicular to the wall of the cylinder.
  • the transition plate 3003 axially separates the housing 300 to form a first receiving cavity 100 and a second receiving cavity 200 .
  • a transition port 3004 is provided in the middle of the transition plate 3003 in the axial direction.
  • the first accommodating chamber 100 and the second accommodating chamber 200 communicate with each other through a transition port 3004.
  • the first filter group 1001 includes a first filter element 10, a second filter element 20, and a water channel partition plate 46.
  • the water channel partition plate 46 is connected to the first end structure 401 and the second end structure 402, respectively, to
  • the first accommodating chamber 100 is spaced apart from the first low-pressure area 1002 and the second low-pressure area 1003.
  • the first filter element 10 is provided in the first low-pressure area 1002.
  • the second inlet and outlet 102 flow out, the second filter 20 is provided in the second low-pressure region 1003, and the water flowing in from the transition port 3004 flows out of the third inlet 201 after passing through the second filter 20.
  • first filter element 10 with a cylindrical shape provided in the center of the first receiving chamber 100 as a primary filtering unit is provided outside the first receiving chamber 100
  • the second filter element 20 serves as a final filter 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 accommodating cavity 100. As shown in FIG. 18, 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 distribution channel 21 is connected to the transition port 3004, and the fourth uniform distribution channel 22 is connected to the third inlet 201.
  • a second inner end cap 43 is provided at the upper end of the second filter element 20, and a first inner end cap 41 is provided at the lower end of the second filter element 20.
  • the second inner end cover 43 is provided with an inner port 431 communicating with the third inlet 201.
  • 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 3004 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 Port 451.
  • 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 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 second filter group 2001 is provided in the second receiving chamber 200
  • the second filter group 2001 includes a third filter 30, and the cylindrical third filter 30 is provided in the second housing Cavity 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 disposed directly opposite the transition port 3004.
  • the wall of the central pipe 33 is provided with filtered water inlet holes.
  • the third filter element 30 is composed of a plurality of reverse osmosis membrane bag 32, and the reverse osmosis membrane bag 32 has a first part and a second part, and each waste water collection pipe 34 It is separated from the central tube 33 by at least one first part of the reverse osmosis membrane bag 32, and the second part of the plurality of reverse osmosis membrane bags 32 is formed around the central tube 33 and a plurality of wastewater headers 34 , To form a multi-layer spiral wound film module.
  • the central pipe 33 has 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 reverse osmosis membrane bag 32.
  • the third filter element 30 is provided with a third end structure 47 and a fourth end structure 48 at both ends, and the third end structure 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 structure 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 structure 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 3004, and the third cannula 472 is connected to the central tube 33.
  • the third end structure 47 is provided with a first positioning protrusion 473 which cooperates with the waste pipe 34 in a foolproof manner.
  • the peripheral wall of the third end structure 47 is provided with a first fixed-axis protrusion 474 to be fitted with the top of the third filter 30.
  • the fourth end structure 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 structure 48, 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 structure 48 Plug-in connection with the fourth connection 321.
  • the fourth end structure 48 is provided with a second positioning protrusion 483 which is blocked and matched with the central tube 33.
  • a second fixed shaft protrusion 484 is provided to cooperate with the bottom of the third filter 30.
  • a sealing ring is added between the third end structure 47 and the first outer end cover 42.
  • a sealing ring is added between the first outer end cover 42 and the transition port 3004.
  • 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 3004. Pure water enters the third uniform flow channel 21 from the transition port 3004, and is filtered by the second filter 20 in the radial direction, enters the fourth uniform flow channel 22, and flows out of the third inlet 201 for 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)，包括：壳体(300)和两个过滤组。壳体包括瓶体(3002)、两个瓶盖(3001)和过渡板(3003)，瓶体的两端敞开并由两个瓶盖密封，过渡板设在瓶体内。瓶体与过渡板、两个瓶盖分别限定出第一容纳腔(100)和第二容纳腔(200)，并分别设有两个过滤组。瓶盖通过旋焊结构连接在瓶体上或/和瓶盖可开合地连接在瓶体上。

Description

复合滤芯组件
相关申请的交叉引用
本申请基于申请号为201811289179.1、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201821786339.9、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201811290399.6、申请日为2018年10月31日的中国专利申请“复合滤芯组件”、以及申请号为201821795921.1、申请日为2018年10月31日的中国专利申请“复合滤芯组件”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
本申请属于净水技术领域，具体是一种复合滤芯组件。
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。在更换时，往往需要将整个滤芯与其外部的壳体同时更换，更换成本较高。
当多种不同的滤芯集成在一个瓶体中时，瓶身较大，瓶体与端盖连接时较为困难，容易出现配合不紧密而导致漏水现象；或瓶体与瓶盖不适配，增加加工难度和废材率，导致壳体整体性差，不美观。
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，本申请的目的在于提出一种复合滤芯组件，所述复合滤芯组件整体性好、结构紧 凑，端部密封性优良。
根据本申请实施例的复合滤芯组件，包括：壳体，所述壳体包括瓶体、两个瓶盖和过渡板，所述瓶体的两端敞开，所述过渡板设在所述瓶体内，两个所述瓶盖分别密封连接在所述壳体的两端，所述瓶体与所述过渡板、其中一个所述瓶盖之间限定出第一容纳腔，所述瓶体与所述过渡板、另一个所述瓶盖之间限定出第二容纳腔，所述过渡板上设有过渡口；第一过滤组，所述第一过滤组设在所述第一容纳腔内；第二过滤组，所述第二过滤组设在所述第二容纳腔内，所述第二容纳腔内水经所述第二过滤组过滤后，经所述过渡口流向所述第一容纳腔；其中，至少一个所述瓶盖通过旋焊结构连接在所述瓶体上；或两个所述瓶盖中至少一个可开合地连接在所述瓶体上，可开合的所述瓶盖对应的所述过滤组可拆卸地连接在所述瓶盖和所述过渡板之间。
根据本申请实施例的复合滤芯组件，通过在壳体内设置过渡板隔出了两个容纳腔，其壳体内部能够集成安装有两个过滤组，过滤功能多样化，增加了自来水的过滤效果。集成度高、整体体积小，极大地减少了安装时所需的空间。减少了两组过滤组之间连接时所需的外部管道，使复合滤芯组件整体布置紧凑，一定程度上节省用材成本。过渡板还可以支撑两侧的过滤组，使过滤组在长期使用的过程中不易歪斜。当瓶盖与瓶体之间通过旋焊结构连接，可增强该端瓶盖与瓶体之间的连接强度，使得经过旋焊结构连接的该端瓶体内可承受更高的水压，并保持良好的密封作用，防止漏水。采用旋焊结构可增加复合滤芯组件整体的强度和结构稳定性。当过渡板和可拆卸的瓶盖配合设置，可形成便于安装和更换相应滤芯组的结构，极大地降低了换芯成本，降低了换芯的难度，提高了换芯效率。
可选的，当至少一个所述瓶盖通过旋焊结构连接在所述瓶体上时，所述瓶体的端面与所述瓶盖的端面相接触的部分包括斜面焊接区，所述斜面焊接区为环绕所述瓶体的中轴线设置的圆环形，且所述斜面焊接区为圆台周面。
可选的，所述瓶体的端面和所述瓶盖的端面至少一个上设有旋焊溢料槽，所述旋焊溢料槽位于所述斜面焊接区的径向外侧。
可选的，所述瓶体和所述瓶盖中的一个上设有所述旋焊溢料槽和内侧翻边，所述内侧翻边配合在所述瓶体和所述瓶盖中的另一个的内周面上。
可选的，两个所述瓶盖均旋焊连接在所述瓶体上。
可选的，当两个所述瓶盖中至少一个可开合地连接在所述瓶体上，可开合的所述瓶盖通过螺纹连接在所述瓶体上，或者可开合的所述瓶盖通过搭扣连接在所述瓶体上；且，可开合的所述瓶盖与所述瓶体之间设有瓶体密封圈。
可选的，当所述瓶盖通过螺纹连接在所述瓶体上时，所述瓶盖上的所述瓶体密封圈 位于所述螺纹的远离所述过渡板的一侧。
可选的，所述第一过滤组的两端分别设有第一端结构和第二端结构，所述第一过滤组通过所述第一端结构、所述第二端结构分别连接所述过渡板、所述瓶盖，所述第一端结构相对所述过渡板可转动，所述第二端结构相对所述瓶盖可转动；所述第二过滤组的两端分别设有第三端结构和第四端结构，所述第二过滤组通过所述第三端结构、所述第四端结构分别连接所述过渡板、所述瓶盖，所述第三端结构相对所述过渡板可转动，所述第四端结构相对所述瓶盖可转动。
可选的，所述壳体上设有第一进出口、第二进出口、第三进出口，所述第一过滤组包括第一过滤件、第二过滤件和水路间隔板，所述水路间隔板分别与所述第一端结构和所述第二端结构相连，以将所述第一容纳腔间隔出第一低压区和第二低压区，所述第一过滤件设在所述第一低压区内，由所述第一进出口流入的水经所述第一过滤件后从所述第二进出口流出，所述第二过滤件设在所述第二低压区内，从所述过渡口流入的水经所述第二过滤件后从所述第三进出口流出。
可选的，所述水路间隔板为筒形，所述第二过滤件位于所述水路间隔板的内侧，所述第一过滤件外套在所述水路间隔板的外侧，所述第一过滤件的两端及所述第二过滤件的两端均由所述第一端结构和所述第二端结构配合封堵。
可选的，所述第一端结构包括：第一外端盖，所述第一外端盖与所述水路间隔板的一端周沿密封连接，所述第一外端盖上设有连通所述第二低压区的第一插管，所述第一插管插接在所述过渡板上，所述第一过滤件的端面胶粘在所述第一外端盖上。
可选的，所述第二端结构包括：第二外端盖，所述第二外端盖插接在所述瓶盖上，所述第一过滤件的端面胶粘在所述第二外端盖上；第二中端盖，所述第二中端盖与所述水路间隔板的周壁密封连接，所述第二中端盖插接在所述瓶盖上。
可选的，所述第二过滤件为与所述水路间隔板间隔开设置的筒形，所述第二端结构包括：第二内端盖，所述第二内端盖插接在所述瓶盖上，所述第二过滤件的一端端面胶粘在所述第二内端盖上；所述第一端结构包括：第一内端盖，所述第二过滤件的另一端端面胶粘在所述第一内端盖上。
可选的，所述壳体上设有第四进出口和第五进出口，所述第二过滤组包括：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，从所述第四进出口进入所述第二容纳腔的水经所述反渗透膜片袋过滤后流向所述过滤水入孔，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。
可选的，所述反渗透膜片袋卷出的圆形筒的轴向两端胶粘在所述第三端结构和所述第四端结构上。
可选的，当一个所述瓶盖通过旋焊结构连接在所述瓶体上时，另一个所述瓶盖正对一侧的所述过渡板表面上，设有非圆形的旋焊工装固定凸台；当两个所述瓶盖均通过旋焊结构连接在所述瓶体上时，所述过渡板的至少一侧表面上设有非圆形的旋焊工装固定凸台。
可选的，所述第一过滤组和所述第二过滤组的外周上均设有至少一圈定轴凸块，每一圈的多个所述定轴凸块分别止抵在所述壳体的内壁上。
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
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1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2为本申请一个实施例的复合滤芯组件的仰视图。
图3为图1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4为本申请一个实施例的复合滤芯组件省去内部过滤组的结构示意图。
图5为图4中区域I的局部放大示意图。
图6为图4中区域Ⅱ的第二端盖上旋焊结构的局部放大示意图。
图7为图4中区域Ⅲ的第一端盖上旋焊结构的局部放大示意图。
图8为本申请一个实施例的复合滤芯组件的过渡板的仰视结构示意图。
图9为本申请一个实施例的复合滤芯组件的过渡板的俯视结构示意图。
图10为本申请一个实施例的第三端盖的俯视图。
图11为本申请一个实施例的第三端盖的仰视图。
图12为本申请一个实施例的第四端盖的仰视图。
图13为本申请一个实施例的第四端盖的俯视图。
图14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15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16为本申请一个实施例中反渗透膜元件的俯视图。
图17为本申请又一个实施例的复合滤芯组件的总体结构示意图。
图18为图17的内部结构示意图。
图19为图18的俯视图。
图20为图18的仰视图。
图21为图18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。
附图标记：
复合滤芯组件1000；
第一容纳腔100；第一过滤组1001；第一低压区1002；第二低压区1003；
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；
第一端结构401；第二端结构402；
第一内端盖41；
第一外端盖42；第一插管421；
第二内端盖43；内端口431；第五插管432；
第二外端盖44；外端口441；第六插管442；
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；
第二容纳腔200；第二过滤组2001；高压区2002；
第三过滤件30；第五均布流道31；反渗透膜片袋32；中心管33；废水集管34；
第五进出口301；第四进出口302；
第三端结构47；第二插管471；第三插管472；第一定位凸起473；第一定轴凸块474；
第四端结构48；第四插管481；排废口482；第二定位凸起483；第二定轴凸块484；
壳体300；
瓶盖3001；
第一瓶盖310；第一接管311；第二接管312；第三接管313；提手314；
第二瓶盖320；第四接管321；
瓶体3002；
过渡板3003；过渡口3004；旋焊工装固定凸台3005；
旋焊结构400；
斜面焊接区410；
旋焊溢料槽420；
内侧翻边430。
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。
下面参考附图来详细描述根据本申请实施例的复合滤芯组件1000。
根据本申请实施例的一种复合滤芯组件1000，如图1所示，包括：壳体300、第一过滤组1001，第二过滤组2001。
其中，如图1、图2、图3、图4所示，壳体300包括瓶体3002、两个瓶盖3001和过渡板3003，瓶体3002的两端敞开，过渡板3003设在瓶体3002内，两个瓶盖3001分别密封连接在壳体300的两端。瓶盖3001将壳体300密封形成整体，保护内部的各过滤组结构不受外部环境的影响。
如图3、图4所示，瓶体3002与过渡板3003、其中一个瓶盖3001之间限定出第一容纳腔100，瓶体3002与过渡板3003、另一个瓶盖3001之间限定出第二容纳腔200，过渡板3003上设有过渡口3004。这里，过渡板3003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3004连通。
为方便描述，下文中将其中一个瓶盖3001记为第一瓶盖310，另一个瓶盖3001则记为第二瓶盖320。瓶体3002与过渡板3003、第一瓶盖310之间限定出第一容纳腔100时，瓶体3002与过渡板3003、第二瓶盖320之间限定出第二容纳腔200。
如图1所示，两个过滤组分别为第一过滤组1001和第二过滤组2001，第一过滤组1001设在第一容纳腔100内，第二过滤组2001设在第二容纳腔200内，第二容纳腔200内水经第二过滤组2001过滤后，经过渡口3004流向第一容纳腔100。壳体300中通过设置两个过滤组，可使复合滤芯组件1000具有更多的过滤功能，增加了集成度，且无需布置由第二过滤组2001过滤后的水流向第一容纳腔100的外部管道，简化了管路布 置形式。
其中，如图4所示，两个瓶盖3001中至少一个瓶盖3001通过旋焊结构400连接在瓶体3002上。这里至少一个瓶盖3001表明，或为第一瓶盖310通过旋焊结构400连接在瓶体3002上，或为第二瓶盖320通过旋焊结构400连接在瓶体3002上，或为第一瓶盖310和第二瓶盖320均通过旋焊结构400连接在瓶体3002上。
所谓的旋焊结构400，指的是瓶盖3001与瓶体3002的接触面在旋焊后相连接而形成的连接结构。具体而言，将瓶盖3001与瓶体3002保持相对转动，二者接触面摩擦生热，接触面材料受热熔化而胶着连接为一体。
可以理解的是，当瓶盖3001与瓶体3002之间通过旋焊结构400连接时，可增强该端瓶盖3001与瓶体3002之间的连接强度，使得经过旋焊结构400连接的该端瓶体3002内可承受更高的水压，并保持良好的密封作用。而点焊或者其他焊接方式，有的需要预埋焊料，有的需要用焊枪沿瓶盖3001的一周加热，有一处没有焊到该处就容易漏水。而采用旋焊，接触面一周都能均匀加热，接触面一周都能受热熔化而胶着连接，即保证接触面一周形成完整的密封环。由此，可防止壳体300在内部过滤组工作时发生漏水现象。
采用旋焊结构400连接的瓶体3002和瓶盖3001，形成稳定的连接关系，端盖3001不易错位，为内部安装好的过滤组提供了稳定的支撑和限位作用，为外部的管路系统的连接提供了稳定的接入口或接出口，使得复合滤芯组件1000整体结构稳定，强度高，可靠性好。
当一端的瓶盖3001采用旋焊结构400与瓶体3002相连，另一端的瓶盖3001可开合地连接在瓶体3002上时，经旋焊结构400连接的一端结构稳定，在装配时，可先将此端的过滤组装入对应的容纳腔中，与瓶体3002焊接后的瓶盖3001与过渡板3003之间安装的过滤组形成稳定的结构，相应的过滤组和瓶盖3001之间不易发生松动和碰撞，降低了过滤组晃动和受损的风险，也降低了瓶盖3002开裂的几率。另一侧与瓶体3002可开合连接的瓶盖3001则方便更换该侧对应的容纳腔中的过滤组。此种设计形式，可满足局部滤材更换的需要，节省滤材的更换成本。
当两端的瓶盖3001均采用旋焊结构400与瓶体3002相连后，则整个复合滤芯组件1000做成整体可抛弃式的滤芯组件，实现滤材的整体抛弃式滤芯组件。
另外，相比于每个壳体中只设置一个过滤组，各个过滤组之间通过外部管道连通的现有滤芯组件来讲，大大简化了各个过滤组之间连接所需的外部管道，使得本申请复合滤芯组件1000的占用空间少、整体布局紧凑、节省用户的橱柜内部体积；同时，增强了整体的美观性能。所有过滤组均设置在壳体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。
在本申请的一些实施例中，如图4、图5、图6、图7所示，瓶体3002的端面与瓶盖3001的端面相接触的部分包括斜面焊接区410，斜面焊接区410为环绕瓶体3002的中轴线设置的圆环形，且斜面焊接区410为圆台周面，即斜面焊接区410在径向上具有一定的倾斜度，或者说斜面焊接区410形成为去掉了锥尖的圆锥面。
如此设置斜面焊接区410，一方面是圆台周面具有调心的作用，使瓶盖3001和瓶体3002转动旋焊时能够保持同轴，另一方面圆台周面增加了接触面积，增加旋焊连接形成的胶着连接面的径向宽度，这样连接处抗扭、抗弯性能都会增强。还有一点非常重要之处在于，接触面受热熔化后熔料具有一定流动性，斜面焊接区410的设置可以将熔料朝向有利的方向导流，最好是将熔料朝向壳体300外部导出，避免熔料冷却成的焊渣、披锋形成在壳体300内部。而且导流后，能使熔料更均匀，使旋焊连接形成的胶着连接面更宽。
可选地，瓶体3002与瓶盖3001之间形成相平行的斜面焊接区410。即，当瓶体3002上形成由上到下倾斜的斜面焊接区410时，其对应的瓶盖3001也形成由上到下倾斜的斜面焊接区410。反之，亦可。方便瓶体3002与瓶盖3001之间焊接后形成无缝接合，有利于提高局部焊接强度。
有利地，瓶体3002旋焊时保持竖向设置，对某个瓶盖3001进行旋焊时，就将该瓶盖的斜面焊接区410保持上端直径小、下端直径大的状态，这样能将熔料朝向壳体300的外部导流。
在本申请的一些实施例中，瓶体3002的端面和瓶盖3001的端面至少一个上设有旋焊溢料槽420，旋焊溢料槽420位于斜面焊接区410的径向外侧。
这里，如果当瓶盖3001位于瓶体3002的上方，二者间的斜面焊接区410的上端直径小、下端直径大时，最好将旋焊溢料槽420形成在瓶体3002上。如果瓶体3002位于瓶盖3001的上方，二者间的斜面焊接区410的上端直径小、下端直径大时，最好将旋焊溢料槽420形成在瓶盖3001上。
此旋焊溢料槽420可在旋焊过程中收集焊渣，旋焊溢料槽420中收集的焊渣凝固后可增加局部的强度；旋焊溢料槽420还可防止焊渣溢出到壳体300的外表面，防止形成披锋。
可选地，旋焊溢料槽420的内边缘连接斜面焊接区410的最大直径边缘处。配合焊渣的导流工作，有利于收集旋焊时的所有焊渣。
在本申请的一些实施例中，瓶体3002和瓶盖3001中的一个上设有旋焊溢料槽420和内侧翻边430，内侧翻边430配合在瓶体3002和瓶盖3001中的另一个的内周面上。这里，当瓶体3002上设有旋焊溢料槽420和内侧翻边430时，则内侧翻边430配合在瓶盖3001的内周面上。当瓶盖3001上设有旋焊溢料槽420和内侧翻边430时，则内侧翻边430配合在瓶体3002的内周面上。内侧翻边430的设置，增强了瓶体3002和瓶盖3001之间的焊接局部强度，且为两者提供了内周面的限位关系。另外，内侧翻边430还可阻挡旋焊时熔料流入在瓶体3002内部。
可选地，当斜面焊接区410的轴线竖向设置，且上端直径小、下端直径大时，内侧翻边430的端面高于斜面焊接区410的最小直径边缘。进一步可选地，设置有内侧翻边430的瓶体3002或瓶盖3001上，在内侧翻边430与斜面焊接区410的最小直径边缘之间设置有内溢料槽，进一步防止焊渣流入到瓶体3002内部容纳腔中。
在本申请的一些实施例中，如图1、图3、图4所示，两个瓶盖3001均旋焊连接在瓶体3002上，形成整体可抛弃式复合滤芯组件1000。
且，第一过滤组1001的两端分别设有第一端结构401和第二端结构402，第一过滤组1001通过第一端结构401、第二端结构402分别连接过渡板3003、瓶盖3001，第一端结构401相对过渡板3003可转动，第二端结构402相对瓶盖3001可转动。
第一过滤组1001的两端分别限位在瓶盖3001、过渡板3003之间，使第一过滤组1001安装方便，安装时具有一定的可调性，且安装后整体不会发生歪斜。当第一过滤组1001受到水流的冲击时，可相对瓶盖3001和过渡板3003转动的第一过滤组1001有一定的缓冲移动空间，不易因水压太大而歪斜。可更快地实现水流均匀的分布。
第二过滤组2001的两端分别设有第三端结构47和第四端结构48，第二过滤组2001通过第三端结构47、第四端结构48分别连接过渡板3003、瓶盖3001，第三端结构47相对过渡板3003可转动，第四端结构48相对瓶盖3001可转动。
第二过滤组2001的两端分别限位在瓶盖3001、过渡板3003之间，使第二过滤组2001安装时具有一定的可调性，且安装后整体不会发生歪斜。
这样设置，过滤组通过端结构连接过渡板3003上的过渡口3004、瓶盖3001上的进出口，连接非常方便，减少不必要的管路。而且瓶盖3001在装配过程中，难免会需要通过旋转使瓶盖3001盖紧或者松开的过程，尤其当瓶盖3001旋焊连接在瓶体3002时，将端结构可转动连接，才不会对过滤组产生损坏。另外，瓶盖3001在旋紧的过程中，可以使端结构与过渡板3003、瓶盖3001连接更紧。
在本申请的一些实施例中，如图4、图8所示，当一个瓶盖3001通过旋焊结构400连接在瓶体3002上时，另一个瓶盖3001正对一侧的过渡板3003表面上，设有非圆形的旋焊工装固定凸台3005。例如，非圆形可以为六边形、五边形、四边形等多角形结构。当需要瓶盖3001旋焊连接于瓶体3002上时，此旋焊工装固定凸台3005与外部的固定工装可定位连接，使瓶体3002相对于固定工装不转动，使旋焊过程中瓶体3002与固定工装之间不发生转动，旋焊过程中较为稳定。
如图1、图3、图4、图8、图9所示，当两个瓶盖3001均通过旋焊结构400连接在瓶体3002上时，过渡板3003的至少一侧表面上设有非圆形的旋焊工装固定凸台3005。方便在焊接一端的端盖3001于瓶体3002时，将瓶体3002保持在固定位置，防止瓶体3002旋转。
上述实施例为瓶盖3001中至少有一个是通过旋焊结构400连接在瓶体3002上的，包括一个瓶盖3001与瓶体3002通过旋焊结构400连接，以及两个瓶盖3001(第一瓶盖310、第二瓶盖320)均通过旋焊结构400连接在瓶体3002的情况。
下述的具体方式将描述两个瓶盖3001中至少一个可开合地连接在瓶体3002上，可开合的瓶盖3001对应的过滤组可拆卸地连接在瓶盖3001和过渡板3003之间，包括一个瓶盖3001与瓶体3002之间可拆卸连接，以及两个瓶盖3001(第一瓶盖310、第二瓶盖320)均与瓶体3002可开合连接的情况。
根据本申请实施例的一种复合滤芯组件1000，如图17和图18所示，包括：壳体300、两个过滤组(1001，2001)。
其中，如图17、图18、图21所示，壳体300包括瓶体3002、两个瓶盖3001和过渡板3003，瓶体3002的两端敞开，过渡板3003设在瓶体3002内，两个瓶盖3001分别密封连接在壳体300的两端。瓶盖3001将壳体300密封形成整体，保护内部的各过滤组结构不受外部环境的影响。
如图21所示，瓶体3002与过渡板3003、其中一个瓶盖3001之间限定出第一容纳腔100，瓶体3002与过渡板3003、另一个瓶盖3001之间限定出第二容纳腔200，过渡板3003上设有过渡口3004。这里，过渡板3003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3004连通。
为方便描述，下文中将其中一个瓶盖3001记为第一瓶盖310，另一个瓶盖3001则记为第二瓶盖320。瓶体3002与过渡板3003、第一瓶盖310之间限定出第一容纳腔100 时，瓶体3002与过渡板3003、第二瓶盖320之间限定出第二容纳腔200。
如图18、图21所示，两个过滤组分别为第一过滤组1001和第二过滤组2001，第一过滤组1001设在第一容纳腔100内，第二过滤组2001设在第二容纳腔200内，第二容纳腔200内水经第二过滤组2001过滤后，经过渡口3004流向第一容纳腔100。壳体300中通过设置两个过滤组，可使复合滤芯组件1000具有更多的过滤功能，增加了集成度，且无需布置由第二过滤组2001过滤后的水流向第一容纳腔100的外部管道，简化了管路布置形式。
其中，两个瓶盖3001中至少一个可开合地连接在瓶体3002上，可开合的瓶盖3001对应的过滤组可拆卸地连接在瓶盖3001和过渡板3003之间。这里，至少一个表明：或为第一瓶盖310可开合地连接在瓶体3002一端，第二瓶盖320与瓶体3002之间不可开合。或为第二瓶盖3002可开合地连接在瓶体3002一端，第一瓶盖310与瓶体3002之间则不可开合。或为第一瓶盖310和第二瓶盖320均与瓶体3002之间形成可开合的连接关系。当仅有其中一个瓶盖3001可开合时，则可对应更换局部的过滤组，当两边的瓶盖3001均可开合时，则可对应更换所有的过滤组。
开合设计的瓶盖3001以及与之对应的可拆卸过滤组为用户自主换芯提供了可能性和便利性，相比于传统抛弃式滤芯组件，降低了更换成本。
这里，开合设计的形式可以为盖合形式，也可以为螺纹连接的形式，还可以为插接扣合的形式，在这里不做具体限制。
可以理解的是，相比于每个壳体中只设置一个过滤组，各个过滤组之间通过外部管道连通的现有滤芯组件来讲，大大简化了各个过滤组之间连接所需的外部管道，使得本申请复合滤芯组件1000的占用空间少、整体布局紧凑、节省用户的橱柜内部体积；同时，增强了整体的美观性能。所有过滤组均设置在壳体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。
通过拆卸一端或两端的瓶盖3001并更换相对应的过滤组，可完成相应过滤组的更换，复合滤芯组件1000无需全部抛弃，形成了环境友好型过滤组件，节省了使用成本和过滤组的更换成本。
在本申请的一些示例中，也可以将其中一端的瓶盖3001与瓶体3002之间设计成旋焊结构，形成固定连接，即瓶盖3001或瓶体3002中的一个设置旋焊溢流槽，以及旋焊翻边，另一个的内周面则与旋焊溢流槽、旋焊翻边配合焊接。这种一端旋焊的结构，可以保证复合滤芯组件1000在旋焊的一端的密封性，且使复合滤芯组件1000的整体性更强。另外，可通过另一端开合的瓶盖3001和瓶体3002对内部的过滤组进行手动更换。
在本申请的一些实施例中，如图18所示，可开合的瓶盖3001通过螺纹连接在瓶体3002上，且可开合的瓶盖3001与瓶体3002之间设有瓶体密封圈。即瓶体3002的端部和瓶盖3001上一个设置外螺纹，另一个设置相配合的内螺纹。当需要更换相应的过滤组时，仅需要打开螺纹配合的瓶体3002上的瓶盖3001，则可进行更换操作。瓶体密封圈可保证壳体300内部的液体不溢出，保证复合滤芯组件1000的端部密封，进而保证过滤时的有效性和可靠性。
在本申请的一些实施例中，可开合的瓶盖3001通过搭扣连接在瓶体3002上，可开合的瓶盖3001与瓶体3002之间设有瓶体密封圈。搭扣连接的瓶体3002和瓶盖3001更容易进行连接，使瓶盖3001和瓶体3002之间开合更加容易。
本申请的瓶盖3001和瓶体3002之间也可以为卡接连接，即瓶体3002的端部设置卡扣，瓶体3002两端的第一瓶盖310和第二瓶盖320上设置卡孔，使得瓶体3002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。
在本申请的一些实施例中，当瓶盖3001通过螺纹连接在瓶体3002上时，瓶盖3001上的瓶体密封圈位于螺纹的远离过渡板3003的一侧。螺纹连接的瓶盖3001和瓶体3002之间本身具有一定的密封性，若有液体通过其接合处，需要沿着两者的螺旋接合处向外渗，因此在远离过渡板3003的一侧设置密封圈作为最终的密封措施，增加了密封效果，防止壳体300内部的液体向外渗。
如此设置密封圈，还在于换芯时能够缓和内外压差，避免瓶盖3001打开时水流外溅。具体而言，壳体300内外存在压差，打开瓶盖3001过程中，瓶盖3001与瓶体3002之间的螺旋慢慢旋开，外部空气逐渐从螺纹空隙处向内流动。而由于瓶盖3001上的密封圈位于螺纹的远离过渡板3003的一侧，密封圈的阻挡使外部空气的进入放缓，而且瓶盖3001打开过程中密封圈不易掉出，从而避免开盖过程水溢出。
可选地，瓶盖3001与瓶体3002之间设有多圈瓶体密封圈。进一步增强两者之间的密封效果。
在本申请的一些实施例中，第一过滤组1001的两端分别设有第一端结构401和第二端结构402，第一过滤组1001通过第一端结构401、第二端结构402分别连接过渡板3003、瓶盖3001，第一端结构401相对过渡板3003可转动，第二端结构402相对瓶盖3001可转动。
这样设置，第一过滤组1001通过第一端结构401连接过渡板3003上的过渡口3004， 第一过滤组1001通过第二端结构402连接瓶盖3001上的进出口，这样连接非常方便，减少不必要的管路。而且可开合的瓶盖3001在开合过程中，难免会需要通过旋转使瓶盖3001盖紧或者松开的过程，甚至当瓶盖3001螺旋连接在瓶体3002时，将第一端结构401相对过渡板3003可转动，第二端结构402相对瓶盖3001可转动，才不会对第一过滤组1001产生损坏。另外，瓶盖3001在旋紧的过程中，可以使第一端结构401与过渡板3003连接更紧，第二端结构402与瓶盖3001连接更紧。
第一过滤组1001的两端分别限位在瓶盖3001、过渡板3003之间，使第一过滤组1001安装方便，安装时具有一定的可调性，且安装后整体不会发生歪斜。当第一过滤组1001受到水流的冲击时，可相对瓶盖3001和过渡板3003转动的第一过滤组1001有一定的缓冲移动空间，不易因水压太大而歪斜。可更快地实现水流均匀的分布。
第二过滤组2001的两端分别设有第三端结构47和第四端结构48，第二过滤组2001通过第三端结构47、第四端结构48分别连接过渡板3003、瓶盖3001，第三端结构47相对过渡板3003可转动，第四端结构48相对瓶盖3001可转动。
第二过滤组2001的两端分别限位在瓶盖3001、过渡板3003之间，使第二过滤组2001安装时具有一定的可调性，且安装后整体不会发生歪斜。
在上述的所有示例中，下述技术方案均可与其技术方案进行组合。
在本申请的一些实施例中，如图1、图2、图3、图4、图18、图21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，第一过滤组1001包括第一过滤件10、第二过滤件20和水路间隔板46。水路间隔板46分别与第一端结构401和第二端结构402相连，以将第一容纳腔100间隔出第一低压区1002和第二低压区1003(如图3、图18所示)。
第一过滤件10设在第一低压区1002内，由第一进出口101流入的水经第一过滤件10后从第二进出口102流出，第二过滤件20设在第二低压区1003内，从过渡口3004流入的水经第二过滤件20后从第三进出口201流出。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。
此处的低压区表明第一过滤件10和第二过滤件20在过滤时，无需额外施加外部的压力则可正常工作。
可选地，第一低压区1002和第二低压区1003的水压小于等于市政供水水压。方便 自来水进入低压区的入口处。
可选地，第一低压区1002内水压为0.1～0.4MPa。使得自来水容易从外部的管网系统中进入到第一低压区1002中并由第一过滤件10进行过滤。
在本申请的一些实施例中，如图1、图3、图18和图21所示，水路间隔板46为筒形，第二过滤件20位于水路间隔板46的内侧，第一过滤件10外套在水路间隔板46的外侧，第一过滤件10的两端及第二过滤件20的两端均由第一端结构401和第二端结构402配合封堵。
可选地，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，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。
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1、图3、图18所示，第一端结构401包括：第一外端盖42，第一外端盖42与水路间隔板46的一端周沿密封连接。如图1、图18中所示，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，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。
第一外端盖42上设有连通第二低压区1003的第一插管421，第一插管421插接在 过渡板3003上。第一插管421插接在过渡板3003中，一方面进一步封闭了过渡口3004，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和第二过滤组2001之间的流道连接更为容易。
第一过滤件10的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1、图3、图18所示，第二端结构402包括：第二外端盖44、第二中端盖45。
其中，第二外端盖44插接在瓶盖3001上(图1、图18中为第一瓶盖310)，第一过滤件10的端面胶粘在第二外端盖44上。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。
具体地，第二外端盖44配合在第一过滤件10的远离过渡口3004的轴向端面上，以堵住第一过滤件10，第二外端盖44上设有插接在瓶盖3001上的外端口441。
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。
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。
在图3、图21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。
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3004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。
另外，第二中端盖45与水路间隔板46的周壁密封连接，第二中端盖45插接在瓶 盖3001上(图1、图18中为第一瓶盖310)。
可选地，如图3、图21所示，第一瓶盖310的内周壁上朝着瓶体3002设有第三接管313，第二中端盖45上设有中端口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。
在第一瓶盖310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3、图21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1、图18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。
在本申请的一些实施例中，第二过滤件20为与水路间隔板46为间隔开设置的筒形。筒形的第二过滤件20与水路间隔板46之间形成了上述第三均布流道21。
在本申请的一些实施例中，如图1、图3、图18、图21所示，第二端结构402还包括：第二内端盖43，第二内端盖43插接在瓶盖3001上(图1、图18中为第一瓶盖310)。插接配合的形式方便装配。
可选地，第二内端盖43配合在第二过滤件20的远离过渡口3004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 组件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。
可选地，第二内端盖43的周边设有向下的外翻边，外翻边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中的内凸缘，内凸缘的外周面与第二过滤件20的内周面接触。内凸缘和外翻边每一样的设置，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的一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。
具体地，第一端结构401还包括：第一内端盖41，而第二过滤件20的另一端端面胶粘在第一内端盖41上。
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。
在一些示例中，如图3、图21所示，壳体300的第一瓶盖310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。
在图3、图21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。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预先连接成一体成前后置一体化滤芯。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。
这样的前后置一体化滤芯，在装配时可直接插在过渡板3003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3002上的，那用户在使用后，也可以自行更换前后置一体化滤芯(低压区内的滤芯组件)，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3、图21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1、图3、图18和图21所示，第三过滤件30设在第二容纳腔200内，作为第二过滤组2001的一部分，即第三过滤件30位于高压区2002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。
可选地，高压区2002(如图3、图4、图21所示)内水压为0.7-0.85Mpa。此处较高的水压有利于第三过滤件30的过滤，加快水流的过膜速度，且为第三过滤件10的用材选择提供了更多的可能性，增强第三过滤件30的过滤能力。
在本申请的一些实施例中，如图1、图18所示，壳体300上设有第四进出口302和第五进出口301。当第四进出口302为第三过滤件30的进水口时，第五进出口301则为第三过滤件30的出水口；反之，当第四进出口302为第三过滤件30的出水口时，第五进出口301则为第三过滤件30的进水口。
可选地，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3004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3004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1、图3、图18、图21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1、图2、图3、图18和图21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1、图18所示，第二过滤组2001包括：反渗透膜元件，反渗透膜元件包括：中心管组和多个反渗透膜片袋32，中心管组包括中心管33和多个间隔开设置的废水集管34，多个废水集管34环绕中心管33设置，中心管33的管壁上设有过滤水入孔，废水集管34的管壁上设有废水入孔。
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。
如图14-图16所示，反渗透膜片袋32包括螺旋卷绕的多组过滤膜。反渗透膜片袋32具有位于中心管组内部的第一部分和位于中心管组外部的第二部分，每一废水集管34和中心管33被至少一个反渗透膜片袋32的第一部分隔开，多个反渗透膜片袋32的第二部分形成围绕在中心管组的周围的多层薄膜组件。多层薄膜组件为多个反渗透膜片袋32卷制出的圆筒，该圆筒构成上述第三过滤件30。
其中，从第四进出口302进入第二容纳腔200的水经反渗透膜片袋32过滤后流向过滤水入孔，废水集管34与第五进出口301相连，中心管33与过渡口3004相连。
从第四进出口302流到第五均布流道31内的水，沿径向穿过反渗透膜片袋32并朝着中心管组的方向流动，流动的过程中水分子不断地渗透到反渗透膜片袋32内，渗透到反渗透膜片袋32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3004流动。而未渗透进反渗透膜片袋32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，以及反渗透膜片袋32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，第一过滤组1001和第二过滤组2001的外周上均设有至少一圈定轴凸块，每一圈的多个定轴凸块分别止抵在壳体300的内壁上。其中，第一过 滤组1001的定轴凸块图未示出。第二过滤组2001的定轴凸块分别设在第三端结构47和第四端结构48上，为方便描述，下文中将第三端结构47上的定轴凸块描述为第一定轴凸块474，将第四端结构48上的定轴凸块描述为第二定轴凸块484。
定轴凸块的设置使瓶盖3001相对瓶体3002转动时，定轴凸块对过滤组产生调心的作用，保证过滤组与瓶体3002的同轴度。
在本申请的一些实施例中，反渗透膜元件的轴向两端分别连接在第三端结构47和第四端结构48上。第三端结构47和第四端结构48分别插接在过渡板3003和瓶盖3001上。第三端结构47和第四端结构48封闭了反渗透膜元件的两端，使反渗透膜元件不同的流道之间的水不发生串流，不干扰，保证反渗透膜元件的过滤效果。通过分别插接在过渡板3003和瓶盖3001(如图1、图2、图18中的第二瓶盖320)上，使反渗透膜元件装配容易，且装配结构稳定，防止在长时间使用的过程中出现歪斜。
具体地，如图1、图3、图18、图21所示，第三端结构47配合在第三过滤件30的朝向过渡口3004的端面上，第三端结构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3004内，第三插管472与中心管33相连。这里，第三端结构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，第三端结构47通过第二插管471插接在过渡口3004内，一方面便于密封，防止第二容纳腔200内高压水未经反渗透膜片袋32过滤就流向过渡口3004，另一方面利用过渡口3004定位，提高定位精度的同时还能降低装配难度。
第三端结构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11所示，第三端结构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，方便第三端结构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10、图11所示，第三端结构47的周壁上设有第一定轴凸块474，多个第一定轴凸块474沿周向间隔开设置，多个第一定轴凸块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3004处良好配合。
有利地，第二插管471与过渡口3004之间设有密封圈。
在本申请的一些实施例中，如图1、图3、图12、图13、图18、图21所示，复合滤芯组件1000的第四端结构48配合在第三过滤件30的远离过渡口3004的端面上，第四端结构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13所示，第四端结构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，方便第四端结构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12、图13所示，第四端结构48的周壁上设有第二定轴凸块484，多个第二定轴凸块484沿周向间隔开设置，多个第二定轴凸块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1、图18中，第四端结构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1、图21所示，壳体300的内周壁上设有第四接管321，在图5、图21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，第四端结构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，保证了第四端结构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、反渗透膜片袋32、第三端结构47、第四端结构48预先连接成一体化反渗透膜滤芯。甚至过渡口3004、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膜滤芯，在装配时可直接插在过渡板3003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3002上的，那用户在使用后，也可以自行更换一体化反渗透膜滤芯，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。
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。
为更好理解本申请实施例的方案，下面结合图1-图21描述本申请的两个具体实施例中的复合滤芯组件1000的结构。
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，第一过滤组1001中的第一过滤件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；第二过滤组2001中的第三过滤件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。第一过滤组1001中的第二过滤件20以圆筒形的中空碳棒作为终级过滤为例进行说明。
实施例1
如图1、图2、图3、图4所示，一种复合滤芯组件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3002和封闭在两端的第一瓶盖310以及第二瓶盖320，每个瓶盖3001均与瓶体3002通过旋焊结构400形成密封连接。如图4、图5、图6、图7所示，旋焊结构400包括呈圆台周面的斜面焊接区410，第一瓶盖310和第二瓶盖320上分别在斜面焊接区410的末端设有旋焊溢料槽420，在斜面焊接区410的始端设有配合在瓶体3002内周面上的内侧翻边430。
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。第一瓶盖310向侧边延伸形成提手314，第一进出口101、第二进出口102、第三进出口201均靠近提手314设置在一侧，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1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3003，过渡板3003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3003的中部沿轴向设有过渡口3004。第一容纳腔100和第二容纳腔200之间通过过渡口3004连通。如图8、图9所示，过渡口3004向外凸出形成非圆形的旋焊工装固定凸台3005，过渡口3004为圆形过孔。
如图1所示，第一过滤组1001包括第一过滤件10、第二过滤件20和水路间隔板46，水路间隔板46分别与第一端结构401和第二端结构402相连，以将第一容纳腔100间隔出第一低压区1002和第二低压区1003，第一过滤件10设在第一低压区1002内，由第一进出口101流入的水经第一过滤件10后从第二进出口102流出，第二过滤件20设在第二低压区1003内，从过渡口3004流入的水经第二过滤件20后从第三进出口201流出。进而，第一容纳腔100中形成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1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3004，第四均布流道22连接第三进出口201。
如图1、图3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3004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3004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。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3004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。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。
如图3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1、图14、图15、图16所示，第二过滤组2001设在所述第二容纳腔200内，第二过滤组2001包括第三过滤件30，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3004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32组成，反渗透膜片袋32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32的第一部分隔开，多个反渗透膜片袋32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3、图14、图15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对应一个反渗透膜片袋32。
如图1、图3、图10所示，第三过滤件30的两端分别设有第三端结构47和第四端结构48，第三端结构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，第四端结构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。第三端结构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3004内，第三插管472与中心管33相连。第三端结构47上设有与废水管34防呆配合的第一定位凸起473。第三端结构47的周壁设有第一定轴凸块474与第三过滤件30的顶部配合装配。第四端结构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结构48设有第四接管321，第四接管321连通第五进出口301，第四端结构48上设有第四插管481，第四插管481与第四接管321插接相连。第四端结构48上设有与中心管33封堵配合的第二定位凸起483。第四端结构48的周壁上设有第二定轴凸块484与第三过滤件30的底部配合装配。第三端结构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3004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3004。纯水从过渡口3004进入第三均布流道21，并沿径向经第二过滤件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17、图18、图19、图20、图21所示，一种复合滤芯组件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3002和封闭在两端的第一瓶盖310以及第二瓶盖320，每个瓶盖3001均与瓶体3002通过相配的螺纹形成密封连接。在密封处增设瓶体密封圈。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18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3003，过渡板3003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3003的中部沿轴向设有过渡口3004。第一容纳腔100和第二容纳腔200之间通过过渡口3004连通。
如图18所示，第一过滤组1001包括第一过滤件10、第二过滤件20和水路间隔板46，水路间隔板46分别与第一端结构401和第二端结构402相连，以将第一容纳腔100间隔出第一低压区1002和第二低压区1003，第一过滤件10设在第一低压区1002内，由第一进出口101流入的水经第一过滤件10后从第二进出口102流出，第二过滤件20设在第二低压区1003内，从过渡口3004流入的水经第二过滤件20后从第三进出口201流出。进而，第一容纳腔100中形成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18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3004，第四均布流道22连接第三进出口201。
如图18、图21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3004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3004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。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3004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。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。
如图21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15、图18所示，第二过滤组2001设在所述第二容纳腔200内，第二过滤组2001包括第三过滤件30，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3004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32组成，反渗透膜片袋32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32的第一部分隔开，多个反渗透膜片袋32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14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对应一个反渗透膜片袋32。
如图10、图11、图12、图13、图18、图21所示，第三过滤件30的两端分别设有第三端结构47和第四端结构48，第三端结构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，第四端结构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。第三端结构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3004内，第三插管472与中心管33相连。第三端结构47上设有与废水管34防呆配合的第一定位凸起473。第三端结构47的周壁设有第一定轴凸块474与第三过滤件30的顶部配合装配。第四端结构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结构48设有第四接管321，第四接管321连通第五进出口301，第四端结构48上设有第四插管481，第四插管481与第四接管321插接相连。第四端结构48上设有与中心管33封堵配合的第二定位凸起483。第四端结构48的周壁上设有第二定轴凸块484与第三过滤件30的底部配合装配。第三端结构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3004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3004。纯水从过渡口3004进入第三均布流道21，并沿径向经第二过滤件20过滤，进入第四均布流道22，并从第三进出口201流出饮用。
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“实施例”、“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 (17)

  1. 一种复合滤芯组件，其特征在于，包括：
    壳体，所述壳体包括瓶体、两个瓶盖和过渡板，所述瓶体的两端敞开，所述过渡板设在所述瓶体内，两个所述瓶盖分别密封连接在所述壳体的两端，所述瓶体与所述过渡板、其中一个所述瓶盖之间限定出第一容纳腔，所述瓶体与所述过渡板、另一个所述瓶盖之间限定出第二容纳腔，所述过渡板上设有过渡口；
    第一过滤组，所述第一过滤组设在所述第一容纳腔内；
    第二过滤组，所述第二过滤组设在所述第二容纳腔内，所述第二容纳腔内水经所述第二过滤组过滤后，经所述过渡口流向所述第一容纳腔；其中，
    至少一个所述瓶盖通过旋焊结构连接在所述瓶体上；或两个所述瓶盖中至少一个可开合地连接在所述瓶体上，可开合的所述瓶盖对应的所述过滤组可拆卸地连接在所述瓶盖和所述过渡板之间。
  2. 根据权利要求1所述的复合滤芯组件，其特征在于，当至少一个所述瓶盖通过旋焊结构连接在所述瓶体上时，所述瓶体的端面与所述瓶盖的端面相接触的部分包括斜面焊接区，所述斜面焊接区为环绕所述瓶体的中轴线设置的圆环形，且所述斜面焊接区为圆台周面。
  3. 根据权利要求2所述的复合滤芯组件，其特征在于，所述瓶体的端面和所述瓶盖的端面至少一个上设有旋焊溢料槽，所述旋焊溢料槽位于所述斜面焊接区的径向外侧。
  4. 根据权利要求3所述的复合滤芯组件，其特征在于，所述瓶体和所述瓶盖中的一个上设有所述旋焊溢料槽和内侧翻边，所述内侧翻边配合在所述瓶体和所述瓶盖中的另一个的内周面上。
  5. 根据权利要求1～4中任一项所述的复合滤芯组件，其特征在于，两个所述瓶盖均旋焊连接在所述瓶体上。
  6. 根据权利要求1所述的复合滤芯组件，其特征在于，当两个所述瓶盖中至少一个可开合地连接在所述瓶体上，可开合的所述瓶盖通过螺纹连接在所述瓶体上，或者可开合的所述瓶盖通过搭扣连接在所述瓶体上；且，
    可开合的所述瓶盖与所述瓶体之间设有瓶体密封圈。
  7. 根据权利要求6所述的复合滤芯组件，其特征在于，当所述瓶盖通过螺纹连接在所述瓶体上时，所述瓶盖上的所述瓶体密封圈位于所述螺纹的远离所述过渡板的一侧。
  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，
    所述第一过滤组的两端分别设有第一端结构和第二端结构，所述第一过滤组通过所述第一端结构、所述第二端结构分别连接所述过渡板、所述瓶盖，所述第一端结构相对所述过渡板可转动，所述第二端结构相对所述瓶盖可转动；
    所述第二过滤组的两端分别设有第三端结构和第四端结构，所述第二过滤组通过所述第三端结构、所述第四端结构分别连接所述过渡板、所述瓶盖，所述第三端结构相对所述过渡板可转动，所述第四端结构相对所述瓶盖可转动。
  9. 根据权利要求8所述的复合滤芯组件，其特征在于，所述壳体上设有第一进出口、第二进出口、第三进出口，所述第一过滤组包括第一过滤件、第二过滤件和水路间隔板，
    所述水路间隔板分别与所述第一端结构和所述第二端结构相连，以将所述第一容纳腔间隔出第一低压区和第二低压区，所述第一过滤件设在所述第一低压区内，由所述第一进出口流入的水经所述第一过滤件后从所述第二进出口流出，所述第二过滤件设在所述第二低压区内，从所述过渡口流入的水经所述第二过滤件后从所述第三进出口流出。
  10. 根据权利要求9所述的复合滤芯组件，其特征在于，所述水路间隔板为筒形，所述第二过滤件位于所述水路间隔板的内侧，所述第一过滤件外套在所述水路间隔板的外侧，所述第一过滤件的两端及所述第二过滤件的两端均由所述第一端结构和所述第二端结构配合封堵。
  11. 根据权利要求9或10所述的复合滤芯组件，其特征在于，所述第一端结构包括：第一外端盖，所述第一外端盖与所述水路间隔板的一端周沿密封连接，所述第一外端盖上设有连通所述第二低压区的第一插管，所述第一插管插接在所述过渡板上，所述第一过滤件的端面胶粘在所述第一外端盖上。
  12. 根据权利要求9、10或11所述的复合滤芯组件，其特征在于，所述第二端结构包括：
    第二外端盖，所述第二外端盖插接在所述瓶盖上，所述第一过滤件的端面胶粘在所述第二外端盖上；
    第二中端盖，所述第二中端盖与所述水路间隔板的周壁密封连接，所述第二中端盖插接在所述瓶盖上。
  13. 根据权利要求12所述的复合滤芯组件，其特征在于，所述第二过滤件为与所述水路间隔板间隔开设置的筒形，所述第二端结构包括：第二内端盖，所述第二内端盖插接在所述瓶盖上，所述第二过滤件的一端端面胶粘在所述第二内端盖上；
    所述第一端结构包括：第一内端盖，所述第二过滤件的另一端端面胶粘在所述第一 内端盖上。
  14. 根据权利要求8～13中任一项所述的复合滤芯组件，其特征在于，所述壳体上设有第四进出口和第五进出口，
    所述第二过滤组包括：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，
    从所述第四进出口进入所述第二容纳腔的水经所述反渗透膜片袋过滤后流向所述过滤水入孔，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，所述反渗透膜片袋卷出的圆形筒的轴向两端胶粘在所述第三端结构和所述第四端结构上。
  16. 根据权利要求1～5中任一项所述的复合滤芯组件，其特征在于，当一个所述瓶盖通过旋焊结构连接在所述瓶体上时，另一个所述瓶盖正对一侧的所述过渡板表面上，设有非圆形的旋焊工装固定凸台；
    当两个所述瓶盖均通过旋焊结构连接在所述瓶体上时，所述过渡板的至少一侧表面上设有非圆形的旋焊工装固定凸台。
  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，所述第一过滤组和所述第二过滤组的外周上均设有至少一圈定轴凸块，每一圈的多个所述定轴凸块分别止抵在所述壳体的内壁上。
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