WO2020088557A1 - Structure de canal d'écoulement pour un ensemble cartouche filtrante composite et système de purification d'eau - Google Patents

Structure de canal d'écoulement pour un ensemble cartouche filtrante composite et système de purification d'eau Download PDF

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Publication number
WO2020088557A1
WO2020088557A1 PCT/CN2019/114555 CN2019114555W WO2020088557A1 WO 2020088557 A1 WO2020088557 A1 WO 2020088557A1 CN 2019114555 W CN2019114555 W CN 2019114555W WO 2020088557 A1 WO2020088557 A1 WO 2020088557A1
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WIPO (PCT)
Prior art keywords
filter
flow channel
channel
inlet
water
Prior art date
Application number
PCT/CN2019/114555
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English (en)
Chinese (zh)
Inventor
李杨敏
桂鹏
郑跃东
高宏
Original Assignee
佛山市顺德区美的饮水机制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201811291164.9A external-priority patent/CN111115878A/zh
Priority claimed from CN201821786755.9U external-priority patent/CN209481320U/zh
Priority claimed from CN201821790153.0U external-priority patent/CN209367960U/zh
Priority claimed from CN201821786338.4U external-priority patent/CN209307046U/zh
Priority claimed from CN201811289134.4A external-priority patent/CN111115868A/zh
Priority claimed from CN201811291171.9A external-priority patent/CN111115879A/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 WO2020088557A1 publication Critical patent/WO2020088557A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially

Definitions

  • the present application belongs to the technical field of water purification, in particular to a flow channel structure and water purification system of 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, and the inlet and outlet ports of each filter element assembly are connected in series in sequence.
  • To achieve high-quality drinking water it is often necessary to connect three-stage and four-stage filter core components in series. Both the outlet and inlet flow channels between different filter core components require external pipes to connect, so that the internal pipeline system of the water purifier is complicated and clean.
  • the whole water machine occupies a large space, which is inconvenient to install and replace the filter element. Water leakage is likely to occur at the connection of external pipes, and the overall purifiable water volume has a relatively large limit.
  • each pipe of the water purification system composed of the filter element of the water purifier is complicated, and the filter units at all levels are connected by external pipes with poor reliability and low control accuracy.
  • reverse osmosis filter components when used in multi-stage filter elements, they often discharge concentrated salinity wastewater with higher salinity, which makes the wastewater valve on the wastewater pipeline clogged during long-term use, resulting in a reliable water purification system Poor performance, low service life of reverse osmosis membrane.
  • This application aims to solve one of the technical problems in the related art at least to a certain extent.
  • an object of the present application is to propose a flow channel structure of a composite filter element assembly.
  • the flow channel structure of the composite filter element assembly is compactly arranged, takes up little space, and has multiple filtering effects.
  • Another object of the present application is to propose a water purification system with a flow channel structure of the above composite filter element assembly.
  • the design of the water purification system is simplified, stable and reliable, and has a long service life.
  • the flow channel structure of a composite filter element assembly includes: a first filter unit and a second filter unit spaced apart in the axial direction, the first filter unit having a first inlet and a second inlet A third inlet and outlet, the second filter unit has a fourth inlet and outlet, a transition flow channel is provided between the first filter unit and the second filter unit, wherein the first filter unit is radially A first uniform flow channel, a first filter channel, a second uniform flow channel, a third uniform flow channel, a second filter channel, and a fourth uniform flow channel are provided in this order from outside to inside A first filter element is provided in the channel, and a second filter element is provided in the second filter channel.
  • the first uniform flow channel and the second uniform flow channel communicate with each other through the first filter channel.
  • the third uniformly distributed flow channel and the fourth uniformly distributed flow channel communicate with each other through the second filter channel, the second uniformly distributed flow channel is isolated from the third uniformly distributed flow channel, and does not circulate, the
  • the first uniform flow channel is connected to the first inlet and outlet, and the second uniform flow channel is connected to the first Inlet and outlet, one of the third uniformly distributed flow channel and the fourth uniformly distributed flow channel is connected to the third inlet and outlet, the other of the third uniformly distributed flow channel and the fourth uniformly distributed flow channel
  • the transition flow channel is connected; a third filter element is provided in the second filter unit.
  • the flow channel structure of the composite filter element assembly of the embodiment of the present application four uniformly distributed flow channels and two channels are sequentially arranged in the radial direction in the first filter unit, and a group of filter elements are respectively arranged in the two channels so that the first
  • the overall structure of the filter unit is compact, and two filter functions are integrated.
  • the second uniformly distributed flow channel and the third uniformly distributed flow channel are isolated from each other and do not circulate, so that the first filter element and the second filter element respectively form front and rear filters, forming two different filter systems.
  • the first filter unit and the second filter unit are spaced apart in the axial direction and connected by a transition flow channel.
  • the two filter units are compactly matched and save some external connecting pipes.
  • a third filter element is provided in the second filter unit, which can further increase the overall filtering function of the composite filter element assembly, and improve the quality of the final effluent.
  • the second filter unit has a fifth inlet and outlet
  • the second filter unit is provided with a filtered water circulation cavity and a waste water circulation cavity
  • the filtered water circulation cavity and the waste water circulation cavity are provided between In the filtration membrane, the filtered water circulation cavity communicates with the transition flow channel, and the waste water circulation cavity communicates with the fifth inlet and outlet.
  • a fifth uniform flow channel and a third filter channel are sequentially arranged in the second filter unit from outside to inside in the radial direction, and the third filter channel surrounds the filtered water circulation cavity and the wastewater A flow cavity is provided, the third filter element is provided in the third filter channel, the waste water flow cavity and the fifth uniform flow channel communicate with each other through the third filter channel, and the fifth uniform flow
  • the road connects to the fourth import and export.
  • the fourth uniform flow channel is cylindrical, the first uniform flow channel, the first filter channel, the second uniform flow channel, and the third uniform flow channel,
  • the second filter channel is a ring arranged in layers.
  • a first inner end cover is provided in the first filter unit, and the first inner end cover is sealed in the second filter channel and the fourth uniformly distributed flow channel toward the second filter On the end surface of the unit, the transition flow channel is connected to the third uniform flow channel.
  • a first outer end cap and a waterway spacer are provided in the first filter unit, and the first outer end cap is sealed in the direction of the first filter channel and the second uniform flow channel
  • the water channel spacer is connected to the first outer end cover and is spaced between the second uniform distribution channel and the third uniform distribution channel.
  • a second inner end cap and a second outer end cap are provided in the first filter unit, and the second outer end cap is sealed on an end surface of the first filter channel away from the second filter unit , The second inner end cover is sealed on an end surface of the second filter channel away from the second filter unit.
  • the method further includes: a third end cover and a fourth end cover, the third end cover is sealed at an end of the third filtration channel and the waste water circulation cavity facing the first filtration unit, the The fourth end cap is sealed at an end of the third filter channel and the filtered water circulation cavity away from the first filter unit.
  • a center tube and a plurality of waste water headers are provided in the second filter unit, and a plurality of the waste water headers are disposed around the center tube, the filter membrane is a reverse osmosis membrane bag, and the reverse
  • the osmotic membrane bag has a first part and a second part, each of the wastewater header and the central pipe are separated by at least one first part of the reverse osmosis membrane bag, a plurality of the reverse osmosis membrane bag
  • the second part forms a multi-layer membrane module surrounding the central tube group, and a plurality of reverse osmosis membrane bag roll-formed cylinders constitute the third filter element, and the central tube communicates with the
  • the transition flow channel is provided with a filtered water inlet hole on the pipe wall, the waste water header is connected to the fifth inlet and outlet and a waste water inlet hole is provided on the pipe wall.
  • a spacer bracket is provided in the first filter unit, and the spacer bracket is provided in the second uniform flow channel.
  • a water purification system includes: a composite filter element assembly, and a first filter unit and a second filter unit are axially spaced apart in a housing of the composite filter element assembly, the first filter unit having a first The second inlet and outlet, the second inlet and the third inlet, the second filter unit has a fourth inlet and outlet, and a transition flow channel is provided between the first filter unit and the second filter unit, wherein A first uniform flow channel, a first filter channel, a second uniform flow channel, a third uniform flow channel, a second filter channel and a fourth uniform flow channel are arranged in this order in the first filtering unit A first filter element is provided in the filter channel, and a second filter element is provided in the second filter channel, and the first uniform flow channel and the second uniform flow channel communicate through the first filter channel, The third uniformly distributed flow channel and the fourth uniformly distributed flow channel communicate with each other through the second filtering channel, and the second uniformly distributed flow channel is isolated from the third uniformly distributed flow channel
  • the first uniform flow channel is
  • the first filter unit and the second filter unit are spaced apart in the axial direction and connected by the transition flow channel, the two filter units are compactly matched, and the third filter and the second filter are saved
  • the external connecting pipes connected between the pieces save the number of external pipes and increase the ease of layout and reliability of the overall water purification system. All pipelines are relatively centralized and easy to arrange.
  • the first filtering unit is provided with four uniform flow channels and two channels in sequence, and a filter element is arranged in each of the two channels, so that the overall structure of the first filtering unit is compact and two filtering functions are integrated.
  • the second uniformly distributed flow channel and the third uniformly distributed flow channel are isolated from each other and do not circulate, so that the first filter element and the second filter element respectively form front and rear filters, forming two different filter systems.
  • a third filter element is provided in the second filter unit, which can further increase the overall filtering function of the water purification system and improve the quality of the final water output.
  • the composite filter element assembly is arranged in such a way that the filter elements that can be filtered under normal pressure or low pressure are concentrated in the first filter unit, and the filter elements that require high-pressure filtration are concentrated in the second filter unit, and the two are separately set.
  • the connection of each part of the unit can be assembled according to the requirements of normal pressure to avoid excessive assembly cost, and the connection of each part of the second filter unit is assembled according to the requirements of high pressure.
  • the water purification system further includes: a second switching control valve connected in series to the first switching tube.
  • the water purification system further includes a high-pressure switch connected in series on the pure water pipe, and the high-pressure switch is electrically connected to the second conversion control valve.
  • the water purification system further includes: a first one-way valve connected in series on the pure water pipe.
  • the second filter unit has a fifth inlet and outlet
  • the second filter unit is provided with a filtered water circulation cavity and a waste water circulation cavity
  • the filtered water circulation cavity and the waste water circulation cavity are provided between In the filtration membrane, the filtered water circulation cavity communicates with the transition flow channel, and the waste water circulation cavity communicates with the fifth inlet and outlet.
  • the water purification system further includes: a waste water pipe connected to the fifth inlet and outlet of the composite filter element assembly; a waste water valve connected in series to the waste water pipe.
  • the water purification system further includes: a first switching control valve, the first switching control valve is connected in series to the waste water pipe, the first switching control valve is located between the waste water valve and the fifth inlet Between outlets; a second conversion tube, the second conversion tube is connected to the first conversion tube and the waste water pipe, the connection point of the second conversion tube and the waste water pipe is located in the waste water valve and the Between the first switching control valve, the connection point of the second switching tube and the first switching tube is located between the booster pump and the second inlet and outlet.
  • a first switching control valve the first switching control valve is connected in series to the waste water pipe, the first switching control valve is located between the waste water valve and the fifth inlet Between outlets; a second conversion tube, the second conversion tube is connected to the first conversion tube and the waste water pipe, the connection point of the second conversion tube and the waste water pipe is located in the waste water valve and the Between the first switching control valve, the connection point of the second switching tube and the first switching tube is located between the booster pump and the second inlet and outlet.
  • the water purification system further includes: a second switching control valve connected in series to the first switching tube, and the second switching control valve is located between the second switching tube and the second A connection point between a conversion tube and the second inlet and outlet.
  • the water purification system further includes a high-pressure switch connected in series on the pure water pipe, and the high-pressure switch is electrically connected to the booster pump.
  • the booster pump is electrically connected to the first switching control valve, and the booster pump and the first switching control valve are both open and closed.
  • the water purification system further includes: a first one-way valve connected in series on the pure water pipe.
  • the water purification system further includes: a second one-way valve connected in series on the waste water pipe, the second one-way valve located on the connection point of the second conversion pipe on the waste water pipe and the Between the waste valves.
  • the waste water valve is an adjustable waste water valve, and the waste water valve is cumulative flushing or standby flushing.
  • the first filter element is a roll made of non-woven fabric, polypropylene layer, and carbon fiber
  • the second filter element is a carbon tube
  • the first filter element is coated on the outer side of the second filter element, and the first filter element and the second filter element are separated by a waterway spacer, the first filter element
  • the first uniformly distributed flow channel is formed on the outer peripheral side, and the second uniformly distributed flow channel is defined between the first filter element and the waterway spacer, and the second filter element and the waterway spacer
  • the third uniformly distributed flow channel is defined between them, and the inner cavity surrounded by the second filter element constitutes the fourth uniformly distributed flow channel.
  • the second filtration unit 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
  • the central tube group includes a central tube and a plurality of spaced apart
  • a waste water pipe is provided, and a plurality of the waste water pipes are arranged around the central pipe.
  • the wall of the central pipe is provided with a filtered water inlet hole, and the waste water pipe is provided with a waste water inlet hole;
  • the permeable membrane bag has a first part located inside the central tube group and a second part located outside the central tube group, each of the waste water tube and the central tube is separated by at least one of the reverse osmosis membrane bag The first part is spaced apart, and the second parts of the plurality of reverse osmosis membrane sheet bags form a multi-layer membrane module surrounding the central tube group; wherein, the second inlet and outlet enter the second
  • the water of the filtering unit is filtered by the reverse osmosis membrane bag and flows to the filtered water inlet hole.
  • the lumen of the center tube constitutes the filtered water circulation cavity, and the lumen of the wastewater pipe constitutes the wastewater circulation cavity ,
  • the reverse osmosis membrane bag constitutes the filtration membrane
  • FIG. 1 is a schematic diagram of the overall structure of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the overall structure of the flow channel structure of a composite filter element assembly according to an embodiment of the present application.
  • FIG. 3 is a schematic top view of FIG. 2.
  • FIG. 4 is a schematic diagram of the bottom view of FIG. 2.
  • FIG. 5 is a schematic structural side view of a third end cap according to an embodiment of the present application.
  • FIG. 6 is a top view of a third end cap according to an embodiment of the application.
  • FIG. 7 is a bottom view of a third end cap according to an embodiment of this application.
  • FIG 8 is a bottom view of a fourth end cap according to an embodiment of the application.
  • FIG. 9 is a top view of a fourth end cap according to an embodiment of the application.
  • FIG. 10 is a schematic diagram of a three-dimensional structure of a center pipe and a waste water header according to an embodiment of the present application.
  • FIG. 11 is a plan view of a reverse osmosis filter membrane bag, a central tube, and a waste water collecting pipe according to an embodiment of the present application.
  • FIG. 12 is a top view of a spiral wound reverse osmosis membrane element in an embodiment of the present application.
  • FIG. 13 is a schematic diagram of the overall structure of the water purification system of the first embodiment of the present application.
  • FIG. 14 is an overall schematic diagram of the water purification system of the second embodiment of the present application when normally filtering and returning water to make water.
  • FIG. 15 is an overall schematic diagram of the second embodiment of the present application when flushing a waste water valve with a water purification system.
  • 16 is a schematic diagram of the overall structure of a composite filter element assembly in a water purification system according to two embodiments of this application.
  • Fig. 17 is a top view of Fig. 16.
  • Fig. 18 is a bottom view of Fig. 16.
  • the first filter unit 100 The first filter unit 100;
  • the first filter 10 the first uniform flow channel 11; the second uniform flow channel 12; the first filter channel 13;
  • Second filter 20 third uniform flow channel 21; fourth uniform flow channel 22; second filter channel 23; transition flow channel 24;
  • the third import and export 201 The third import and export 201;
  • the second filter unit 200 The second filter unit 200;
  • the third filter 30 The third filter 30; the fifth uniform flow channel 31; the third filter channel 32; the central tube 33; the waste water header 34; the filter membrane 35;
  • Third end cap 47 second cannula 471; third cannula 472; first positioning protrusion 473; first assembly positioning structure 474;
  • Housing 300 housing upper cover 310; housing lower cover 320;
  • Pure water pipe 500 high pressure switch 510; first check valve 520;
  • Waste water pipe 600 waste water valve 610; first switching control valve 620; second check valve 630;
  • a flow channel structure of a composite filter element assembly 1000 includes: a first filter unit 100 and a second filter unit 200 spaced apart in the axial direction.
  • the first filter unit 100 has a first inlet 101, a second inlet 102, and a third inlet 201, the second filter unit 200 has a fourth inlet 302, and a first filter unit 100 and a second filter unit 200 are provided between There is a transition channel 24.
  • the first filter unit 100 and the second filter unit 200 are spaced apart in the axial direction and are connected by the transition flow channel 24.
  • the first filter unit 100 and the second filter unit 200 are compactly matched to form a whole and save part External connection pipes.
  • the first filtering unit 100 is provided with a first uniform flow channel 11, a first filtering channel 13, a second uniform flow channel 12, a third uniform flow channel 21, a second The filter channel 23 and the fourth uniformly distributed flow channel 22.
  • a first filter element 10 is provided in the first filter channel 13, and a second filter element 20 is provided in the second filter channel 23.
  • the two purified water paths of the first filter element 10 and the second filter element 20 can increase the filtration performance of the first filter unit 100 and meet different requirements of water quality water discharge effect.
  • the first uniform flow channel 11 and the second uniform flow channel 12 communicate with each other through the first filter channel 13, and the third uniform flow channel 21 and the fourth uniform flow channel 22 communicate with the second filter channel 23.
  • one of the uniform flow channels on both sides of the first filter channel 13 can evenly distribute the liquid before the first filter 10 is filtered, and the other can evenly distribute the liquid after the first filter 10 is filtered, the first filter 10 Both sides are evenly pressed.
  • one of the uniform flow channels on both sides of the second filter channel 23 can evenly distribute the liquid before the second filter 20 is filtered, and the other can evenly distribute the liquid after the second filter 20 is filtered, and both sides of the second filter 20 Even pressure.
  • the second uniformly distributed flow channel 12 and the third uniformly distributed flow channel 21 are isolated and not in circulation.
  • the two evenly distributed flow channels are isolated, so that the two independent purified water channels in the first filter unit 100 do not interfere with each other during operation.
  • the effluent of one purified water channel can be directly used as the influent of another purified water channel; the effluent of one purified water channel can also be filtered by other external filtering components and then used as the inlet water of another purified water channel.
  • the first uniform flow channel 11 is connected to the first inlet 101, and the second uniform flow channel 12 is connected to the second inlet 102.
  • the second inlet 102 is used as the liquid outlet of the first filter 10; if the first inlet 101 is used as the liquid outlet of the first filter 10
  • the second inlet 102 serves as the liquid inlet of the first filter 10.
  • One of the third uniform flow channel 21 and the fourth uniform flow channel 22 is connected to the third inlet and outlet 201, and the other of the third uniform flow channel 21 and the fourth uniform flow channel 22 is connected to the transition flow channel 24.
  • the fourth uniform distribution channel 22 is connected to the third inlet 201; when the third uniform distribution channel 21 is connected to the third inlet 201, the first The four uniformly distributed flow channels 22 are connected to the transition flow channels 24.
  • the second filter unit 200 is provided with a third filter 30.
  • 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.
  • first filter unit 100 four uniformly distributed flow channels and two filter channels are sequentially arranged in the first filter unit 100 in the radial direction to form two mutually independent purified water channels, and filter elements are respectively arranged in the two filter channels.
  • the overall structure of the first filter unit 100 is made compact, and two water quality filtration links are integrated in the first filter unit 100, and a set of filter elements in the second filter unit 200 makes the composite filter element assembly of the present application
  • the whole 1000 has three water quality filtration links.
  • the first filter unit 100 and the second filter unit 200 are spaced apart in the axial direction, and one of the evenly distributed flow channels on both sides of the second filter element 20 is connected to the third filter element 30 through the transition flow channel 24.
  • the two filter units (100, 200) With a compact fit, it saves the external connection pipes that the filtered water of the third filter 30 needs to lay when flowing to the second filter 20; or saves the filtered water of the second filter 20 when flowing to the third filter
  • the external connection pipes required for the filtering of the piece 30 It is advantageous for the composite filter element assembly 1000 to reduce the overall size, and for simplifying the arrangement of external piping.
  • the first filter channel 13 From the layout position of the first uniform flow channel 11, the first filter channel 13, the second uniform distribution channel 12, the third uniform distribution channel 21, the second filter channel 23, and the fourth uniform distribution channel 22,
  • the passing path is short and the flow volume is large.
  • it has a flushing effect on the impurities on the surface of the filter when passing radially, and the water flow is more likely to wash away the impurities and then pass through the filter.
  • each filter element basically flows in the axial direction when entering and exiting the water, which is not only conducive to the uniform distribution of the water flow, but also helps to carry the washed impurities to the axial end of the first filter unit 100 to avoid the impurities from blocking Filter surface.
  • the first filter unit 100 and the second filter unit 200 are arranged in the same composite filter element assembly 1000, and the degree of integration is high, which is conducive to reducing the structural size.
  • the composite filter element assembly 1000 When the composite filter element assembly 1000 is installed, only one set of positioning and installation structure is required. Simple assembly and time saving.
  • the composite filter element assembly 1000 includes a housing 300, and a housing upper cover 310 and a housing lower cover 320 are provided at both ends of the housing 300.
  • a first filter unit 100 and a second filter unit 200 are formed in the housing 300 along the axial length.
  • a spacer bracket 49 is provided in the first filter unit 100, and the spacer bracket 49 is provided in the second uniform flow channel 12.
  • the spacing bracket 49 maintains the second uniform flow channel 12 with a specific width and a specific shape, ensuring good fluid circulation performance.
  • the spacer bracket 49 is rolled together with the first filter 10.
  • the spacing bracket 49 can ensure the tightness and strength of the entire rolled first filter element 10.
  • the first filter 10 is a roll made of non-woven fabric, polypropylene layer, and carbon fiber. 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 second filter unit 200 has a fifth inlet and outlet 301.
  • the second filter unit 200 is provided with a filtered water circulation cavity and a waste water circulation cavity, a filter membrane 35 is provided between the filtered water circulation cavity and the waste water circulation cavity, the filtered water circulation cavity is connected to the transition flow channel 24, and the waste water circulation cavity is connected to the fifth inlet Exit 301.
  • the fifth inlet and outlet 301 here is the outlet of the waste water generated by the second filter unit 200 after being filtered.
  • the fourth inlet 302 is the inlet of the liquid to be filtered of the second filter unit 200.
  • the third filter 30 includes a filter membrane 35 that filters the water circulation chamber and the waste water circulation chamber.
  • This application is limited to “first”, “second”, “third”, “fourth”, “fifth” features can explicitly or implicitly include one or more of the features, used to distinguish the description of features , No order, no importance.
  • a second uniformly distributed flow channel 31 and a third filter channel 32 are provided in this order from the outside to the inside of the second filter unit 200, and the third filter channel 32 surrounds the filtered water circulation cavity It is provided with the waste water circulation cavity.
  • the third filter channel 32 is provided with a third filter element 30.
  • the waste water circulation cavity and the fifth uniform distribution channel 31 communicate with each other through the third filter channel 32, and the fifth uniform distribution channel 31 communicates with the fourth inlet Exit 302.
  • the liquid entering from the fourth inlet and outlet 302 is distributed and distributed in the fifth uniform distribution channel 31, and is evenly distributed on the outer side of the third filter 30.
  • the high salinity The waste water flows to the waste water circulation chamber and is discharged through the fifth inlet and outlet 301 (as shown in FIG. 4).
  • the passing path is short, and the flow rate is large, and it has a scouring effect on the impurities on the surface of the filter membrane 35 when passing radially
  • the water flow is easier to wash away impurities and pass through the filter membrane 35.
  • the inlet and outlet water of the fifth uniform distribution channel 31 outside the third filter 30 and the inlet and outlet water inside the central tube 33 mostly flow in the axial direction, which is not only conducive to the uniform distribution of the water flow, but also to the third filter
  • the impurities washed by the surface are brought to the axial end of the second filter unit 200 to prevent the impurities from being blocked on the filter surface.
  • the second filter unit 200 is provided with a central tube 33 and a plurality of wastewater headers 34, which are surrounded by a plurality of wastewater headers 34
  • the central tube 33 is provided.
  • a filter membrane 35 is provided on the outer periphery of the central tube 33.
  • the central tube 33 communicates with the transition channel 24 and a filtered water inlet hole is provided on the tube wall.
  • the filter membrane 35 on the outer periphery of the central tube 33 is a reverse osmosis membrane, and can only pass pure water with a lower salinity and better water quality.
  • the meaning of "plurality" is two or more.
  • the central tube 33, a plurality of wastewater headers 34, and the filtration membrane 35 constitute a spiral wound reverse osmosis membrane element.
  • the lumen of the center tube 33 constitutes the above-mentioned filtered water circulation cavity, and the lumen of the wastewater header 34 constitutes the above-mentioned wastewater circulation cavity.
  • the filtration membrane 35 is a plurality of groups.
  • the filtration membrane 35 is a reverse osmosis membrane bag.
  • the reverse osmosis membrane bag has a first part and a second part.
  • Each wastewater header 34 and central tube 33 are separated by at least one reverse osmosis membrane bag.
  • a part is separated, and the second part of the plurality of reverse osmosis membrane bag is formed around the tube group composed of the central tube 33 and the plurality of waste water collecting pipes 34 to form a multi-layer membrane module.
  • the water that enters the second filter unit 200 from the fourth inlet and outlet 302 is filtered by the reverse osmosis membrane bag, and spirally flows along the second part of the reverse osmosis membrane bag toward the central tube 33.
  • the purified water that has penetrated into the reverse osmosis membrane bag also flows toward the central tube 33 in the spiral direction.
  • pure water flows from the filtered water inlet hole of the central tube 33 toward the transition flow channel 24.
  • the high salinity wastewater remaining after the filtration flows to the wastewater collection hole on the wall of the wastewater header 34, which is connected to the fifth inlet 301 and discharges the wastewater from the fifth inlet 301.
  • the third filter 30 of the present application is a reverse osmosis membrane element (RO membrane element).
  • the reverse osmosis membrane element adopts a lateral flow water-saving membrane, and the lateral flow enters water to increase the flow rate of the membrane surface, ensure a high recovery rate of pure water, and a longer service life of the filtration membrane 35.
  • the third filter element 30 may also be an ultrafiltration membrane module, specifically, an ultrafiltration membrane filter element available on the market may be used.
  • an ultrafiltration membrane filter element available on the market may be used.
  • the principles and techniques of ultrafiltration filtration and reverse osmosis filtration are all well-known technologies known to those skilled in the art, and will not be repeated in this application.
  • the third filter 30 uses the above filter, the liquid needs to be pressurized in advance and then pumped into the fourth inlet 302.
  • the fourth uniform flow channel 22 is cylindrical, the first uniform flow channel 11, the first filter channel 13, the second uniform flow channel 12, and the third The uniformly distributed flow channel 21 and the second filter channel 23 are ring-shaped arranged in layers.
  • the fourth uniform flow channel 22 is at the center of the first filter unit 100, which is cylindrical.
  • a circle of the second filter channel 23 is sleeved on the outside of the fourth uniform flow channel 22
  • a circle of the third uniform flow channel 21 is sleeved on the outer side of the second filter channel 23
  • a circle of the third uniform flow channel 21 is sleeved on the outside
  • a circle of the second uniformly distributed flow channel 12 is enclosed.
  • a circle of the first filter channel 13 is sheathed on the outside of the second uniformly distributed channel 12, and a circle of the first uniformly distributed channel 11 is sheathed on the outside of the first filter channel 13.
  • the filter area of each layer of filter elements is large, the filter elements are evenly distributed, the first filter unit 100 has a compact overall layout, occupies less installation space, and has a high degree of integration.
  • a first inner end cover 41 is provided in the first filter unit 100, and the first inner end cover 41 is sealed in the second filter channel 23 and the fourth uniform flow channel
  • the end surface of 22 faces the second filtering unit 200 to block the second uniform filtering channel 23 and the fourth uniformly distributed flow channel 22.
  • the first inner end cover 41 blocks the second uniform filtering channel 23 and the fourth uniform distribution channel 22, which means that the first inner end cover 41 seals the second uniform filtering channel 23 and the fourth uniform distribution channel
  • the axial end surface of the channel 22 prevents the water in the second uniform filtering channel 23 and the fourth uniform distribution channel 22 from flowing out or flowing in from the axial end surface toward the transition channel 24.
  • the transition flow channel 24 is connected to the third uniform flow channel 21.
  • the liquid in the central tube 33 of the third filter 30 in the second filter unit 200 can be connected to the liquid in the third uniform flow channel 21 on the second filter 20 side of the first filter unit 100 by the transition channel 24.
  • the two ends of the second filter element 20 are flush with the end faces of the second filter channel 23 respectively. Since the first inner end cover 41 closes the second filter channel 23, the first inner end cover 41 also closes the second The bottom of the filter element 20 and the fourth uniform flow channel 22, and provides the bottom support for the second filter element 20, effectively preventing the liquid to be purified on both sides of the second filter element 20, and the liquid after purification It is connected at the bottom to ensure the filtering effect of the second filter 20.
  • the first inner end cover 41 is provided with an inner flange extending into the fourth uniform flow channel 22, and the outer circumferential surface of the inner flange contacts the inner circumferential surface of the second filter element 20.
  • the outer periphery of the first inner end cover 41 is provided with a flange, and the inner side of the flange is in contact with the outer surface of the second filter 20.
  • the same arrangement of the inner flange and the outer flange can enhance the liquid blocking effect of the first inner end cover 41 on the end surfaces of the fourth uniform flow channel 22 and the second filter element 20;
  • the end cover 41 and the second filter element 20 have a foolproof fit, and are easy to assemble.
  • the axial end surface of the second filter 20 is glued to the first inner end cover 41, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the second filter element 20 is sealingly connected to the first inner end cover 41 by a ring of hot melt adhesive.
  • the first filter unit 100 is provided with a first outer end cover 42 and a waterway spacer 46.
  • the first outer end cover 42 is sealed in the first filter channel 13 and the second The end surface of the second uniform flow channel 12 facing the second filter unit 200, the waterway spacer 46 is connected to the first outer end cover 42 and is spaced between the second uniform flow channel 12 and the third uniform flow channel 21.
  • the first outer end cover 42 closes the bottoms of the first filter element 10 and the second uniform flow channel 12 and provides support for the first filter element 10, effectively preventing the first filter element 10 from The liquid to be purified on the side and the liquid that has been purified are connected in series at the bottom, ensuring the filtering effect of the first filter 10.
  • the waterway spacer 46 produces a reliable separation of the second uniformly distributed flow channel 12 and the third uniformly distributed flow channel 21, avoids cross-flow of the liquid in the first filter element 10 and the second filter element 20, and prevents each uniformly distributed flow channel The water quality is reduced.
  • the waterway spacer 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 water channel spacer 46 and the first outer end cover 42 is less likely to occur, and the position is relatively stable.
  • the one-piece molding is also convenient for assembly, and after long-term use, it is not easy for cross-flow between the third uniformly distributed flow channel 21 and the second uniformly distributed flow channel 12.
  • the first filter element 10 and the second filter element 20 can play a good supporting role.
  • the middle of the first outer end cover 42 protrudes upward to form a boss, and the first inner end cover 41 is suspended above the boss.
  • the first inner end cover 41 separates the first filter unit 100 and the second filter unit 200 in the axial direction, and the first outer end cover 42 is provided with a transition flow channel 24 in the axial direction.
  • the first outer end cap 42 makes the first filter element 10, the second filter element 20, and the third filter element 30 separate in the axial direction, and the transition flow channel 24 thereon makes the second filter element 20 and the third filter element Form a series relationship between 30.
  • the external piping required for the connection between the second filter element 20 and the third filter element 30 is saved.
  • the outer periphery of the first outer end cover 42 is provided with a flange, and the inner side of the flange is in contact with the outer surface of the first filter 10.
  • the outer burring jacket is on the outside of the middle boss of the first outer end cover 42. The outer burring blocks both sides of the middle boss, which can enhance the liquid blocking of the first outer end cover 42 from the end surface of the first filter 10 Effect; and can form a foolproof first filter 10, easy to assemble.
  • the end surface of the first filter element 10 is glued to the first outer end cover 42, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the first filter element 10 is sealingly connected to the first outer end cover 42 by a ring of hot melt adhesive.
  • the gap between the first inner end cover 41 and the first outer end cover 42 is small, and the first inner end cover 41 is in contact with the first outer end cover 42 when subjected to a force toward the first outer end cover 42 In contact, when the transition flow channel 24 enters the water and squeezes the first inner end cover 41, the gap becomes larger, and the water flow is more smooth.
  • the first inner end cover 41 is arranged in a suspension design at a small distance from the first outer end cover 42, so that the water pressure can reach a delicate balance when the water flows through the second filter 20. That is, when the water pressure in the fourth uniform flow channel 22 is greater than the water pressure at the transition channel 24, the first inner end cover 41 can temporarily seal the transition channel 24.
  • a second inner end cap 43 and a second outer end cap 44 are provided in the first filter unit 100, and the second outer end cap 44 is sealed in the first filter channel 13
  • the second inner end cap 43 is sealed on the end surface of the second filter channel 23 that is away from the second filter unit 200.
  • the second inner end cover 43 closes the top of the second filter channel 23, 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 can be discharged outward from the third inlet 201.
  • the second outer end cover 44 closes the tops of the first filter channel 13 and the second uniform flow channel 12, and provides a connection for the first filter element 10 in the first filter channel 13 to provide the first inlet and outlet 101.
  • the second inlet and outlet 102 are separated, which 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 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.
  • the axial end surface of the second filter element 20 is glued to the second inner end cover 43, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the second filter element 20 is sealingly connected to the second inner end cover 43 by a ring of hot melt adhesive.
  • the second outer end cap 44 is fitted on the axial end surface of the first filter element 10 away from the transition channel 24 to block the first filter element 10.
  • the periphery of the second outer end cover 44 is provided with a downward burring edge, and the inner side of the burring edge is in contact with the outer circumferential surface of the first filter 10.
  • the setting of the outer flange makes the connection between the second outer end cover 44 and the first filter element 10 tighter, and increases the reliability of the connection. Both of them can enhance the liquid blocking effect of the second outer end cover 44 on the end surface of the first filter 10, and can form a foolproof fit for the first filter 10, which is easy to assemble.
  • the axial end surface of the first filter element 10 is glued to the second outer end cover 44, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the first filter element 10 is sealingly connected to the second outer end cover 44 by a ring of hot melt adhesive.
  • the second outer end cap 44 is sleeved on the outer side of the second inner end cap 43, and a second middle end cap 45 and a second middle end are also sleeved between the second outer end cap 44 and the second inner end cap 43
  • the flow path between the cover 45 and the second outer end cover 44 communicates with the second inlet and outlet 102.
  • the second middle end cap 45 further seals the upper part of the first filter unit 100, further separating the second uniform flow channel 12 and the third uniform flow channel 21, which is also beneficial to the second inlet 102 and The partition arrangement of the third inlet 201.
  • Providing the second middle end cap 45 instead of integrally forming the second middle end cap 45 and the waterway spacer 46 is advantageous for mold opening on the one hand, and assembly needs on the other hand, improving the reliability of the overall assembly.
  • the second middle end cap 45 may not be provided, so that the waterway spacer 46 can be directly connected to the second inner end cap 43, which saves the number of parts.
  • the second filter 20 since the second filter 20 is to be assembled to the inside of the water channel spacer 46, the opening of the water channel spacer 46 is too small to fit in, and the large opening of the water channel spacer 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 cap 45 When assembling, first install the second filter 20 and other parts into the waterway spacer 46, and then connect the second middle end cap 45 to the waterway spacer 46, then the assembly is satisfied Need to improve the reliability of the overall assembly.
  • the waterway spacer 46 is integrally formed with the first outer end cap 42, it can be manufactured by an integral injection method. At this time, it is not convenient to integrally inject the second middle end cap 45 to facilitate mold opening.
  • 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 sealing the first filter unit 100 by the upper cover 310 of the casing, and is convenient for assembly.
  • the distance between the second middle end cap 45 and the second outer end cap 44 is small, so that the water pressure can reach a delicate balance when the water flows through the first filter 10. That is, when the water pressure inside the water channel spacer 46 is greater than the outside water pressure, the second middle end cap 45 may be squeezed on the second outer end cap 44 to slow down the filtering speed of the first filter 10. During normal operation, the water flow squeezes away the second middle end cap 45 and normally flows toward the second inlet and outlet 102.
  • all parts in the first filter unit 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 sealing ring can be pre-assembled.
  • Such a front-rear integrated filter element can be directly inserted between the partition plate in the casing 300 and the upper cover 310 of the casing during assembly, and the assembly process of the whole machine is greatly simplified. Moreover, if the upper cover 310 of the casing is detachably connected to the bottle body, the user can also replace the front and rear integrated filter elements after use, and the operation steps when the user replaces it are also very easy, which improves the user's replacement. Core experience, reducing the cost of core replacement.
  • the flow channel structure of the composite filter element assembly 1000 further includes: a third end cap 47 and a fourth end
  • the cover 48 and the third end cap 47 are sealed at the end of the third filter channel 32 and the waste water circulation cavity facing the first filter unit 100, and the fourth end cap 48 is sealed at the third filter channel 32 and the first end of the filtered water circulation cavity away from the first One end of the filter unit 100.
  • the third end cap 47 and the fourth end cap 48 provide limit installation for the third filter 30, the central pipe 33, and the waste water header 34.
  • the third end cap 47 closes the top of the third filter 30 and the waste water circulation cavity, and provides the top connection for the third filter 30, effectively preventing the liquid to be purified on both sides of the third filter 30 It is connected with the purified liquid at the top;
  • the fourth end cap 48 closes the bottom of the third filter element 30 and the filtered water circulation cavity, and provides the bottom seal and support for the third filter element 30, which effectively prevents The liquid to be purified on both sides of the third filter 30 and the liquid after purification are connected at the bottom to ensure the filtering effect of the third filter 30.
  • both ends of the third end cap 47 are provided with a second cannula 471 and a third cannula 472 that communicate with each other.
  • the third insertion tube 472 is connected to the center tube 33.
  • the third end cap 47 closes the top of the third filter 30 and provides a top support connection for the third filter 30, effectively preventing the liquid to be purified on both sides of the third filter 30 and the Liquids are tandem at the top.
  • the third end cap 47 is inserted into the transition flow channel 24 through the second insertion tube 471, on the one hand, it is convenient to seal, and prevents the high-pressure water in the second filtration unit 200 from flowing to the transition flow channel 24 without being filtered by the third filter 30
  • the use of the transition runner 24 for positioning improves positioning accuracy while reducing assembly difficulty.
  • the third end cap 47 is inserted into the central tube 33 through the third insertion tube 472.
  • the surface contact between the third insertion tube 472 and the wall of the central tube 33 is used to achieve sealing, and on the other hand, the positioning of the central tube 33 is facilitated. With the installation, the center tube 33 is prevented from skewing and leaking after long-term use.
  • the third end cap 47 is provided with a first positioning protrusion 473, which is corresponding to the wastewater header 34, and one end of the wastewater header 34 is inserted in the first positioning protrusion On the 473, the first positioning protrusion 473 has a certain foolproof coordination function, which is convenient for the positioning and installation of the third end cap 47 and the waste water header 34, and prevents the waste water header 34 from skewing after long-term use.
  • a first assembly positioning structure 474 is provided on the peripheral wall of the third end cap 47, and a plurality of first assembly positioning structures 474 are spaced apart in the circumferential direction, and a plurality of first assemblies The positioning structure 474 abuts against the inner wall of the housing 300 to increase the centering of the third filter 30 in the second filter unit 200, and to prevent the third filter 30 from being skewed as a whole to prevent the transition channel 24 from fitting well.
  • a sealing ring is provided between the second cannula 471 and the transition flow channel 24.
  • the fourth end cap 48 is provided with a fourth insertion tube 481, and the fourth end cap 48 is provided with waste discharges connected to the wastewater header 34 and the fifth inlet 301 respectively Mouth 482.
  • a second positioning protrusion 483 is protruded from the middle of the fourth end cover 48.
  • the second positioning protrusion 483 is corresponding to the central tube 33, and one end of the central tube 33 is inserted into the second positioning protrusion From 483, the second positioning protrusion 483 has a blocking function, and also has a certain foolproof coordination function, which facilitates the positioning and installation of the fourth end cap 48 and the central tube 33, prevents the central tube 33 from skewing and can be closed during long-term use
  • the lower portion of the center tube 33 prevents the liquid in the center tube 33 from flowing out.
  • a second assembly positioning structure 484 is provided on the peripheral wall of the fourth end cap 48, a plurality of second assembly positioning structures 484 are spaced apart along the circumferential direction, and a plurality of second assemblies
  • the positioning structure 484 stops against the inner wall of the housing 300 to improve the alignment of the third filter element 30 in the second filter unit 200, and to prevent the third filter element 30 from being skewed as a whole Good coordination at the takeover.
  • the housing 300 of the composite filter element assembly 1000 is provided with a first filter unit 100 and a second filter unit 200 that are spaced apart in the axial direction.
  • the first filter unit 100 has a first inlet 101, a second inlet 102, and a third inlet 201, the second filter unit 200 has a fourth inlet 302, and a first filter unit 100 and a second filter unit 200 are provided between There is a transition channel 24.
  • the first filter unit 100 and the second filter unit 200 are spaced apart in the axial direction and are connected by the transition flow channel 24.
  • the first filter unit 100 and the second filter unit 200 are compactly matched to form a whole and save part External connection pipes.
  • the first filtering unit 100 is provided with a first uniform flow channel 11, a first filtering channel 13, a second uniform flow channel 12, a third uniform flow channel 21, a second The filter channel 23 and the fourth uniformly distributed flow channel 22.
  • a first filter element 10 is provided in the first filter channel 13, and a second filter element 20 is provided in the second filter channel 23.
  • the two purified water paths of the first filter element 10 and the second filter element 20 can increase the filtration performance of the first filter unit 100 and meet different requirements of water quality water discharge effect.
  • the first uniform flow channel 11 and the second uniform flow channel 12 communicate with each other through the first filter channel 13, and the third uniform flow channel 21 and the fourth uniform flow channel 22 communicate with the second filter channel 23.
  • one of the uniform flow channels on both sides of the first filter channel 13 can evenly distribute the liquid before the first filter 10 is filtered, and the other can evenly distribute the liquid after the first filter 10 is filtered, the first filter 10 Both sides are evenly pressed.
  • one of the uniform flow channels on both sides of the second filter channel 23 can evenly distribute the liquid before the second filter 20 is filtered, and the other can evenly distribute the liquid after the second filter 20 is filtered, and both sides of the second filter 20 Even pressure.
  • the second uniformly distributed flow channel 12 and the third uniformly distributed flow channel 21 are isolated and not in circulation.
  • the two evenly distributed flow channels are isolated, so that the two independent purified water channels in the first filter unit 100 do not interfere with each other during operation.
  • the effluent of one purified water channel can be directly used as the influent of another purified water channel; the effluent of one purified water channel can also be filtered by other external filtering components and then used as the inlet water of another purified water channel.
  • the first uniform flow channel 11 is connected to the first inlet 101, and the second uniform flow channel 12 is connected to the second inlet 102.
  • the second inlet 102 is used as the liquid outlet of the first filter 10; if the first inlet 101 is used as the liquid outlet of the first filter 10
  • the second inlet 102 serves as the liquid inlet of the first filter 10.
  • One of the third uniform flow channel 21 and the fourth uniform flow channel 22 is connected to the third inlet and outlet 201, and the other of the third uniform flow channel 21 and the fourth uniform flow channel 22 is connected to the transition flow channel 24.
  • the fourth uniform distribution channel 22 is connected to the third inlet 201; when the third uniform distribution channel 21 is connected to the third inlet 201, the first The four uniformly distributed flow channels 22 are connected to the transition flow channels 24.
  • the second filter unit 200 is provided with a third filter 30.
  • 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.
  • first filter unit 100 four uniformly distributed flow channels and two filter channels are sequentially arranged in the first filter unit 100 in the radial direction to form two mutually independent purified water channels, and filter elements are respectively arranged in the two filter channels.
  • the overall structure of the first filter unit 100 is made compact, and two water quality filtration links are integrated in the first filter unit 100, and a set of filter elements in the second filter unit 200 makes the composite filter element assembly of the present application
  • the whole 1000 has three water quality filtration links.
  • the first filter unit 100 and the second filter unit 200 are spaced apart in the axial direction, and one of the evenly distributed flow channels on both sides of the second filter element 20 is connected to the third filter element 30 through the transition flow channel 24.
  • the two filter units (100, 200) With a compact fit, it saves the external connection pipes that the filtered water of the third filter 30 needs to lay when flowing to the second filter 20; or saves the filtered water of the second filter 20 when flowing to the third filter
  • the external connection pipes required for the filtering of the piece 30 It is advantageous for the composite filter element assembly 1000 to reduce the overall size, and for simplifying the arrangement of external piping.
  • the first filter channel 13 From the layout position of the first uniform flow channel 11, the first filter channel 13, the second uniform distribution channel 12, the third uniform distribution channel 21, the second filter channel 23, and the fourth uniform distribution channel 22,
  • the passing path is short and the flow volume is large.
  • it has a flushing effect on the impurities on the surface of the filter when passing radially, and the water flow is more likely to wash away the impurities and then pass through the filter.
  • each filter element basically flows in the axial direction when entering and exiting the water, which is not only conducive to the uniform distribution of the water flow, but also helps to carry the washed impurities to the axial end of the first filter unit 100 to avoid the impurities from blocking Filter surface.
  • the first filter unit 100 and the second filter unit 200 are arranged in the same composite filter element assembly 1000, and the degree of integration is high, which is conducive to reducing the structural size.
  • the composite filter element assembly 1000 When the composite filter element assembly 1000 is installed, only one set of positioning and installation structure is required. Simple assembly and time saving.
  • both ends of the housing 300 of the composite filter element assembly 1000 are open, and both ends of the housing 300 are provided with a housing upper cover 310 and a housing lower cover 320.
  • both ends of the housing 300 are provided with a housing upper cover 310 and a housing lower cover 320.
  • the first filter unit 100 is provided with a spacer bracket 49, and the spacer bracket 49 is disposed in the second uniform flow channel 12.
  • the spacing bracket 49 maintains the second uniform flow channel 12 with a specific width and a specific shape, ensuring good fluid circulation performance.
  • the spacer bracket 49 is rolled together with the first filter 10.
  • the spacing bracket 49 can ensure the tightness and strength of the entire rolled first filter element 10.
  • the first filter 10 is a roll made of non-woven fabric, polypropylene layer, and carbon fiber. 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 can control the drinking water quality after the water is discharged, and improve 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 second filter unit 200 has a fifth inlet and outlet 301.
  • the second filter unit 200 is provided with a filtered water circulation cavity and a waste water circulation cavity, a filter membrane 35 is provided between the filtered water circulation cavity and the waste water circulation cavity, the filtered water circulation cavity is connected to the transition flow channel 24, and the waste water circulation cavity is connected to the fifth inlet Exit 301.
  • the fifth inlet and outlet 301 here is the outlet of the waste water generated by the second filter unit 200 after being filtered.
  • the fourth inlet 302 is the inlet of the liquid to be filtered of the second filter unit 200.
  • the third filter 30 includes a filter membrane 35 that filters the water circulation chamber and the waste water circulation chamber.
  • This application is limited to “first”, “second”, “third”, “fourth”, “fifth” features can explicitly or implicitly include one or more of the features, used to distinguish the description of features , No order, no importance.
  • the second filtering unit 200 is provided with a fifth uniform flow channel 31 and a third filtering channel 32 in this order from the outside to the inside in the radial direction, and the third filtering channel 32 surrounds the filtered water circulation cavity It is provided with the waste water circulation cavity.
  • the third filter channel 32 is provided with a third filter element 30.
  • the waste water circulation cavity and the fifth uniform distribution channel 31 communicate with each other through the third filter channel 32, and the fifth uniform distribution channel 31 communicates with the fourth inlet Exit 302.
  • the liquid entering from the fourth inlet and outlet 302 is distributed and distributed in the fifth uniform distribution channel 31, and is evenly distributed on the outer side of the third filter 30.
  • the high salinity The waste water flows to the waste water circulation chamber and is discharged through the fifth inlet and outlet 301 (as shown in FIG. 18).
  • the passing path is short, and the flow rate is large, and it has a scouring effect on the impurities on the surface of the filter membrane 35 when passing radially
  • the water flow is easier to wash away impurities and pass through the filter membrane 35.
  • the inlet and outlet water of the fifth uniform distribution channel 31 outside the third filter 30 and the inlet and outlet water inside the central tube 33 mostly flow in the axial direction, which is not only conducive to the uniform distribution of the water flow, but also to the third filter
  • the impurities washed by the surface are brought to the axial end of the second filter unit 200 to prevent the impurities from being blocked on the filter surface.
  • the second filter unit 200 is provided with a central tube 33 and a plurality of wastewater headers 34, which are surrounded by a plurality of wastewater headers 34
  • the central tube 33 is provided.
  • a filter membrane 35 is provided on the outer periphery of the central tube 33.
  • the central tube 33 communicates with the transition channel 24 and a filtered water inlet hole is provided on the tube wall.
  • the filter membrane 35 on the outer periphery of the central tube 33 is a reverse osmosis membrane, and can only pass pure water with a lower salinity and better water quality.
  • plural means two or more.
  • the central tube 33, a plurality of wastewater headers 34, and the filtration membrane 35 constitute a spiral wound reverse osmosis membrane element.
  • the lumen of the center tube 33 constitutes the above-mentioned filtered water circulation cavity, and the lumen of the wastewater header 34 constitutes the above-mentioned wastewater circulation cavity.
  • the filtration membrane 35 is a plurality of groups.
  • the filtration membrane 35 is a reverse osmosis membrane bag.
  • the reverse osmosis membrane bag has a first part and a second part.
  • Each wastewater header 34 and central tube 33 are separated by at least one reverse osmosis membrane bag.
  • a part is separated, and the second part of the plurality of reverse osmosis membrane bag is formed around the tube group composed of the central tube 33 and the plurality of waste water collecting pipes 34 to form a multi-layer membrane module.
  • the water that enters the second filter unit 200 from the fourth inlet and outlet 302 is filtered by the reverse osmosis membrane bag, and spirally flows along the second part of the reverse osmosis membrane bag toward the central tube 33.
  • the purified water that has penetrated into the reverse osmosis membrane bag also flows toward the central tube 33 in the spiral direction.
  • pure water flows from the filtered water inlet hole of the central tube 33 toward the transition flow channel 24.
  • the high salinity wastewater remaining after the filtration flows to the wastewater collection hole on the wall of the wastewater header 34, which is connected to the fifth inlet 301 and discharges the wastewater from the fifth inlet 301.
  • the third filter 30 of the present application is a reverse osmosis membrane element (RO membrane element).
  • the reverse osmosis membrane element adopts a lateral flow water-saving membrane, and the lateral flow enters water to increase the flow rate of the membrane surface, ensure a high recovery rate of pure water, and a longer service life of the filtration membrane 35.
  • the third filter element 30 may also be an ultrafiltration membrane module, specifically, an ultrafiltration membrane filter element available on the market may be used.
  • an ultrafiltration membrane filter element available on the market may be used.
  • the principles and techniques of ultrafiltration filtration and reverse osmosis filtration are all well-known technologies known to those skilled in the art, and will not be repeated in this application.
  • the third filter 30 uses the above filter, the liquid needs to be pressurized in advance and then pumped into the fourth inlet 302.
  • the fourth uniform flow channel 22 is cylindrical, the first uniform flow channel 11, the first filter channel 13, the second uniform flow channel 12, and the third The uniformly distributed flow channel 21 and the second filter channel 23 are ring-shaped arranged in layers.
  • the fourth uniform flow channel 22 is at the center of the first filter unit 100, which is cylindrical.
  • a circle of the second filter channel 23 is sleeved on the outside of the fourth uniform flow channel 22
  • a circle of the third uniform flow channel 21 is sleeved on the outer side of the second filter channel 23
  • a circle of the third uniform flow channel 21 is sleeved on the outside
  • a circle of the second uniformly distributed flow channel 12 is enclosed.
  • a circle of the first filter channel 13 is sheathed on the outside of the second uniformly distributed channel 12, and a circle of the first uniformly distributed channel 11 is sheathed on the outside of the first filter channel 13.
  • the filter area of each layer of filter elements is large, the filter elements are evenly distributed, the first filter unit 100 has a compact overall layout, occupies less installation space, and has a high degree of integration.
  • a first inner end cover 41 is provided in the first filter unit 100, and the first inner end cover 41 is sealed in the second filter channel 23 and the fourth uniform flow channel
  • the end surface of 22 faces the second filtering unit 200 to block the second uniform filtering channel 23 and the fourth uniformly distributed flow channel 22.
  • the first inner end cover 41 blocks the second uniform filtering channel 23 and the fourth uniform distribution channel 22, which means that the first inner end cover 41 seals the second uniform filtering channel 23 and the fourth uniform distribution channel
  • the axial end surface of the channel 22 prevents the water in the second uniform filtering channel 23 and the fourth uniform distribution channel 22 from flowing out or flowing in from the axial end surface toward the transition channel 24.
  • the transition flow channel 24 is connected to the third uniform flow channel 21.
  • the liquid in the central tube 33 of the third filter 30 in the second filter unit 200 can be connected to the liquid in the third uniform flow channel 21 on the second filter 20 side of the first filter unit 100 by the transition channel 24.
  • the two ends of the second filter element 20 are flush with the end faces of the second filter channel 23 respectively. Since the first inner end cover 41 closes the second filter channel 23, the first inner end cover 41 also closes the second The bottom of the filter element 20 and the fourth uniform flow channel 22, and provides the bottom support for the second filter element 20, effectively preventing the liquid to be purified on both sides of the second filter element 20, and the liquid after purification It is connected at the bottom to ensure the filtering effect of the second filter 20.
  • the first inner end cover 41 is provided with an inner flange extending into the fourth uniform flow channel 22, and the outer circumferential surface of the inner flange contacts the inner circumferential surface of the second filter element 20.
  • the outer periphery of the first inner end cover 41 is provided with a flange, and the inner side of the flange is in contact with the outer surface of the second filter 20.
  • the same arrangement of the inner flange and the outer flange can enhance the liquid blocking effect of the first inner end cover 41 on the end surfaces of the fourth uniform flow channel 22 and the second filter element 20;
  • the end cover 41 and the second filter element 20 have a foolproof fit, and are easy to assemble.
  • the axial end surface of the second filter 20 is glued to the first inner end cover 41, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the second filter element 20 is sealingly connected to the first inner end cover 41 by a ring of hot melt adhesive.
  • the first filter unit 100 is provided with a first outer end cover 42 and a waterway spacer 46, and the first outer end cover 42 is sealed in the first filter channel 13, the first The end surface of the second uniform flow channel 12 facing the second filter unit 200, the waterway spacer 46 is connected to the first outer end cover 42 and is spaced between the second uniform flow channel 12 and the third uniform flow channel 21.
  • the first outer end cover 42 closes the bottoms of the first filter element 10 and the second uniform flow channel 12, and provides support for the first filter element 10, effectively preventing the first filter element 10 from The liquid to be purified on the side and the liquid that has been purified are connected in series at the bottom, ensuring the filtering effect of the first filter 10.
  • the waterway spacer 46 produces a reliable separation of the second uniformly distributed flow channel 12 and the third uniformly distributed flow channel 21, avoids cross-flow of the liquid in the first filter element 10 and the second filter element 20, and prevents each uniformly distributed flow channel The water quality is reduced.
  • the waterway spacer 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 water channel spacer 46 and the first outer end cover 42 is less likely to occur, and the position is relatively stable.
  • the one-piece molding is also convenient for assembly, and after long-term use, it is not easy for cross-flow between the third uniformly distributed flow channel 21 and the second uniformly distributed flow channel 12.
  • the first filter element 10 and the second filter element 20 can play a good supporting role.
  • the middle of the first outer end cover 42 protrudes upward to form a boss, and the first inner end cover 41 is suspended above the boss.
  • the first inner end cover 41 separates the first filter unit 100 and the second filter unit 200 in the axial direction, and the first outer end cover 42 is provided with a transition flow channel 24 in the axial direction.
  • the first outer end cap 42 makes the first filter element 10, the second filter element 20, and the third filter element 30 separate in the axial direction, and the transition flow channel 24 thereon makes the second filter element 20 and the third filter element Form a series relationship between 30.
  • the external piping required for the connection between the second filter element 20 and the third filter element 30 is saved.
  • the outer periphery of the first outer end cover 42 is provided with a flange, and the inner side of the flange is in contact with the outer surface of the first filter 10.
  • the outer burring jacket is on the outside of the middle boss of the first outer end cover 42. The outer burring blocks both sides of the middle boss, which can enhance the liquid blocking of the first outer end cover 42 from the end surface of the first filter 10 Effect; and can form a foolproof first filter 10, easy to assemble.
  • the end surface of the first filter element 10 is glued to the first outer end cover 42, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the first filter element 10 is sealingly connected to the first outer end cover 42 by a ring of hot melt adhesive.
  • the gap between the first inner end cover 41 and the first outer end cover 42 is small, and the first inner end cover 41 is in contact with the first outer end cover 42 when subjected to a force toward the first outer end cover 42 In contact, when the transition flow channel 24 enters the water and squeezes the first inner end cover 41, the gap becomes larger, and the water flow is more smooth.
  • the first inner end cover 41 is arranged in a suspension design at a small distance from the first outer end cover 42, so that the water pressure can reach a delicate balance when the water flows through the second filter 20. That is, when the water pressure in the fourth uniform flow channel 22 is greater than the water pressure at the transition channel 24, the first inner end cover 41 can temporarily seal the transition channel 24.
  • a second inner end cap 43 and a second outer end cap 44 are provided in the first filter unit 100, and the second outer end cap 44 is sealed in the first filter channel 13
  • the second inner end cap 43 is sealed on the end surface of the second filter channel 23 that is away from the second filter unit 200.
  • the second inner end cover 43 closes the top of the second filter channel 23, 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 is collected in the fourth uniform flow channel 22, and can be discharged outward through the third inlet and outlet 201.
  • the second outer end cover 44 closes the tops of the first filter channel 13 and the second uniform flow channel 12, and provides a connection for the first filter element 10 in the first filter channel 13 to provide the first inlet and outlet 101.
  • the second inlet and outlet 102 are separated, which 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 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.
  • the axial end surface of the second filter element 20 is glued to the second inner end cover 43, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the second filter element 20 is sealingly connected to the second inner end cover 43 by a ring of hot melt adhesive.
  • the second outer end cap 44 is fitted on the axial end surface of the first filter element 10 away from the transition channel 24 to block the first filter element 10.
  • the periphery of the second outer end cover 44 is provided with a downward burring edge, and the inner side of the burring edge is in contact with the outer circumferential surface of the first filter 10.
  • the setting of the outer flange makes the connection between the second outer end cover 44 and the first filter element 10 tighter, and increases the reliability of the connection. Both of them can enhance the liquid blocking effect of the second outer end cover 44 on the end surface of the first filter 10, and can form a foolproof fit for the first filter 10, which is easy to assemble.
  • the axial end surface of the first filter element 10 is glued to the second outer end cover 44, which not only facilitates assembly, but also facilitates the installation of the integrated core.
  • the first filter element 10 is sealingly connected to the second outer end cover 44 by a ring of hot melt adhesive.
  • the second outer end cap 44 is sleeved on the outer side of the second inner end cap 43, and a second middle end cap 45 and a second middle end are also sleeved between the second outer end cap 44 and the second inner end cap 43
  • the flow path between the cover 45 and the second outer end cover 44 communicates with the second inlet and outlet 102.
  • the second middle end cap 45 further seals the upper part of the first filter unit 100, further separating the second uniform flow channel 12 and the third uniform flow channel 21, which is also beneficial to the second inlet 102 and The partition arrangement of the third inlet 201.
  • Providing the second middle end cap 45 instead of integrally forming the second middle end cap 45 and the waterway spacer 46 is advantageous for mold opening on the one hand, and assembly needs on the other hand, improving the reliability of the overall assembly.
  • the second middle end cap 45 may not be provided, so that the waterway spacer 46 can be directly connected to the second inner end cap 43, which saves the number of parts.
  • the second filter 20 since the second filter 20 is to be assembled to the inside of the water channel spacer 46, the opening of the water channel spacer 46 is too small to fit in, and the large opening of the water channel spacer 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 cap 45 When assembling, first install the second filter 20 and other parts into the waterway spacer 46, and then connect the second middle end cap 45 to the waterway spacer 46, then the assembly is satisfied Need to improve the reliability of the overall assembly.
  • the waterway spacer 46 is integrally formed with the first outer end cap 42, it can be manufactured by an integral injection method. At this time, it is not convenient to integrally inject the second middle end cap 45 to facilitate mold opening.
  • 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 sealing the first filter unit 100 by the upper cover 310 of the casing, and is convenient for assembly.
  • the distance between the second middle end cap 45 and the second outer end cap 44 is small, so that the water pressure can reach a delicate balance when the water flows through the first filter 10. That is, when the water pressure inside the water channel spacer 46 is greater than the outside water pressure, the second middle end cap 45 may be squeezed on the second outer end cap 44 to slow down the filtering speed of the first filter 10. During normal operation, the water flow squeezes away the second middle end cap 45 and normally flows toward the second inlet and outlet 102.
  • all parts in the first filter unit 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 sealing ring can be pre-assembled.
  • Such a front-rear integrated filter element can be directly inserted between the partition plate in the casing 300 and the upper cover 310 of the casing during assembly, and the assembly process of the whole machine is greatly simplified. Moreover, if the upper cover 310 of the casing is detachably connected to the bottle body, the user can also replace the front and rear integrated filter elements after use, and the operation steps when the user replaces it are also very easy, which improves the user's replacement. Core experience, reducing the cost of core replacement.
  • the composite filter element assembly 1000 further includes: a third end cover 47 and a fourth end cover 48,
  • the three end cap 47 is sealed at the end of the third filter channel 32 and the waste water circulation cavity facing the first filter unit 100
  • the fourth end cap 48 is sealed at the third filter channel 32 and the end of the filtered water circulation cavity away from the first filter unit 100 One end.
  • the third end cap 47 and the fourth end cap 48 provide limit installation for the third filter 30, the central pipe 33, and the waste water header 34.
  • the third end cap 47 closes the top of the third filter 30 and the waste water circulation cavity, and provides the top connection for the third filter 30, effectively preventing the liquid to be purified on both sides of the third filter 30 It is connected with the purified liquid at the top;
  • the fourth end cap 48 closes the bottom of the third filter element 30 and the filtered water circulation cavity, and provides the bottom seal and support for the third filter element 30, which effectively prevents The liquid to be purified on both sides of the third filter 30 and the liquid after purification are connected at the bottom to ensure the filtering effect of the third filter 30.
  • the two ends of the third end cap 47 are provided with the second cannula 471 and the third cannula 472 communicating with each other.
  • the third insertion tube 472 is connected to the center tube 33.
  • the third end cap 47 closes the top of the third filter 30 and provides a top support connection for the third filter 30, effectively preventing the liquid to be purified on both sides of the third filter 30 and the Liquids are tandem at the top.
  • the third end cap 47 is inserted into the transition flow channel 24 through the second insertion tube 471, on the one hand, it is convenient to seal, and prevents the high-pressure water in the second filtration unit 200 from flowing to the transition flow channel 24 without being filtered by the third filter 30
  • the use of the transition runner 24 for positioning improves positioning accuracy while reducing assembly difficulty.
  • the third end cap 47 is inserted into the central tube 33 through the third insertion tube 472.
  • the surface contact between the third insertion tube 472 and the wall of the central tube 33 is used to achieve sealing, and on the other hand, the positioning of the central tube 33 is facilitated. With the installation, the center tube 33 is prevented from skewing and leaking after long-term use.
  • the third end cap 47 is provided with a first positioning protrusion 473, which is corresponding to the wastewater header 34, and one end of the wastewater header 34 is inserted in the first positioning protrusion On the 473, the first positioning protrusion 473 has a certain foolproof coordination function, which is convenient for the positioning and installation of the third end cap 47 and the waste water header 34, and prevents the waste water header 34 from skewing after long-term use.
  • a first assembly positioning structure 474 is provided on the peripheral wall of the third end cap 47, and a plurality of first assembly positioning structures 474 are spaced apart in the circumferential direction, and a plurality of first assemblies The positioning structure 474 abuts against the inner wall of the housing 300 to increase the centering of the third filter 30 in the second filter unit 200, and to prevent the third filter 30 from being skewed as a whole to prevent the transition channel 24 from fitting well.
  • a sealing ring is provided between the second cannula 471 and the transition flow channel 24.
  • the fourth end cap 48 is provided with a fourth insertion tube 481, and the fourth end cap 48 is provided with waste discharges connected to the wastewater header 34 and the fifth inlet 301 respectively Mouth 482.
  • a second positioning protrusion 483 is protruded from the middle of the fourth end cover 48.
  • the second positioning protrusion 483 is corresponding to the central tube 33, and one end of the central tube 33 is inserted into the second positioning protrusion From 483, the second positioning protrusion 483 has a blocking function, and also has a certain foolproof coordination function, which facilitates the positioning and installation of the fourth end cap 48 and the central tube 33, prevents the central tube 33 from skewing and can be closed during long-term use
  • the lower portion of the center tube 33 prevents the liquid in the center tube 33 from flowing out.
  • a second assembly positioning structure 484 is provided on the peripheral wall of the fourth end cap 48, a plurality of second assembly positioning structures 484 are spaced apart along the circumferential direction, and a plurality of second assemblies
  • the positioning structure 484 stops against the inner wall of the housing 300 to improve the alignment of the third filter element 30 in the second filter unit 200, and to prevent the third filter element 30 from being skewed as a whole Good coordination at the takeover.
  • the water purification system 2000 of the first embodiment of the present application will be described below with reference to FIG. 13.
  • a water purification system 2000 includes: a composite filter element assembly 1000, a water inlet pipe 400, a pure water pipe 500, a first conversion pipe 700, and a booster pump 710.
  • the water inlet pipe 400 is connected to the first inlet and outlet 101 of the composite filter element assembly 1000.
  • tap water or raw water from other water sources
  • the first filter 10 will perform preliminary filtering on the tap water.
  • the pure water pipe 500 is connected to the third inlet 201 of the composite filter element assembly 1000.
  • the pure water after the multi-stage filtration of the composite filter element assembly 1000 can be led out by the pure water pipe 500.
  • the first conversion tube 700 is respectively connected to the second inlet 102 and the fourth inlet 302, and the booster pump 710 is connected in series to the first conversion tube 700.
  • the first conversion tube 700 communicates with the flow path between the first filter element 10 and the third filter element 20, so that the pre-filtered water filtered by the first filter element 10 enters the fifth uniform distribution in the third filter element 20 In the flow channel 31.
  • the filtering speed can be accelerated and the filtering efficiency can be improved.
  • the third filter element 20 adopts a reverse osmosis membrane module or an ultrafiltration membrane module, the conversion of low-ion concentration pre-effluent to high-ion concentration wastewater and pure water can be completed.
  • the first filter unit 100 and the second filter unit 200 are spaced apart in the axial direction, and are connected by the transition flow channel 24, the two filter units are compactly matched, and the transition flow channel 24 replaces the third filter element
  • the external connection pipes required for communication between 30 and the second filter element 20 save the external water inlet connection pipe of the second filter element 20 and the external water outlet connection pipe of the third filter element 30 to make the water purification system 2000 as a whole saves the number of external pipes and the difficulty of layout, increases the simplicity of the overall design of the water purification system 2000, and increases the reliability of the operation of the water purification system 2000.
  • the water purification system 2000 of the present application greatly reduces the overall layout space and saves In addition to the layout of external pipelines, the external pipelines arranged in the system are relatively concentrated and easy to arrange.
  • the raw water entering the water purification system 2000 is preliminarily purified by the first filtering element 10 of the first filtering unit 100, then enters the second filtering unit 200 for filtering, and then returns to the first filtering
  • the unit 100 is filtered by the second filter 20.
  • it before entering the second filter unit 200, it is pressurized by the booster pump 710, so that the water flow can pass through the third filter 30 at a high pressure, and the filtration efficiency is improved.
  • the composite filter element assembly 1000 is arranged in such a manner that the filter elements (first filter element 10, second filter element 20) that can be filtered under normal pressure or low pressure are concentrated in the first filter unit 100, and the filter element that requires high-pressure filtration (section Three filter elements 30) are concentrated in the second filter unit 200, and the two are arranged separately.
  • the connection of each part of the first filter unit 100 can be assembled according to the requirements of normal pressure, to avoid excessive assembly costs, and the second filter unit 200 The connection of each part is assembled according to the high voltage requirements.
  • the water purification system 2000 further includes: a second switching control valve 720.
  • the second switching control valve 720 is connected in series to the first switching tube 700, and the second switching control valve 720 can control the circulation and shutoff of the water flow in the first switching tube 700.
  • the system is judged by blocking the flow of water on the first switching tube 700.
  • the second switching control valve 720 is close to the booster pump 710 to ensure that there is no longer any water flow in the booster pump 710 during the judgment, which protects the booster pump 710 effect.
  • a second switch control valve 720 is provided on the first switch tube 700 to control the entire system, and the second filter unit 200 can be avoided.
  • the water flow is countercurrent along the first conversion tube 700.
  • the water purification system 2000 further includes: a high-pressure switch 510 connected in series on the pure water pipe 500, and the high-pressure switch 510 is electrically coupled to the second transfer control valve 720.
  • the high-pressure switch 510 is provided on the pure water pipe 500.
  • the second switching control valve 720 is closed, so that the composite filter element assembly 1000 stops purifying water.
  • the high-pressure switch 510 is electrically connected to the second switching control valve 720, and can control the opening and closing of the second switching control valve 720, so that the water pressure in the outlet pipe 500 and the first switching pipe 700 is kept stable, so that the entire water purification system 2000 Coordinated operation of various waterways.
  • the water purification system 2000 further includes: a first one-way valve 520 connected in series on the pure water pipe 500.
  • the first one-way valve 520 ensures that the drinking water filtered from the second filter 20 flows to the final water end without reverse flow, so that the water purification system 2000 operates stably and reliably.
  • the end of the pure water pipe 500 is connected to a faucet 900 for drinking water for the user, which is convenient for the user to directly use high-quality pure water.
  • the water purification system 2000 further includes: a waste water pipe 600 and a waste water valve 610.
  • the waste water pipe 600 is connected to the fifth inlet 301 of the composite filter element assembly 1000, and the waste water valve 610 is connected in series to the waste water pipe 600.
  • the opening of the waste water valve 610 can control the discharge of waste water with high salt content in the third filter unit 30 to ensure the normal operation of the third filter assembly 30.
  • the waste water valve 610 is an adjustable waste water valve.
  • the waste water valve 610 is a cumulative flush. That is, when the waste liquid accumulates to a certain amount, the control system controls the waste water valve 610 to open once.
  • the waste water valve 610 is a standby flush.
  • the adjustable waste water valve ensures that the waste water valve 610 itself is not blocked, and at the same time ensures the service life of the third filter 30. After the third filter 30 has been working for a period of time, a certain amount of waste water has been accumulated, and the waste water valve 610 is opened to discharge liquid, so as to prevent the long-term accumulation of waste water on the surface of the third filter 30 to damage the third filter 30, and enhance the entirety of the third filter 30
  • the utilization rate of water can increase the flow rate of filtered water; reduce the continuous corrosion of waste water valve 610 by high-salinity waste water and prolong the service life of waste water valve 610.
  • the water purification system 2000 of the second embodiment of the present application will be described below with reference to FIGS. 14-15.
  • a water purification system 2000 includes: a composite filter element assembly 1000, an inlet pipe 400, a pure water pipe 500, a waste water pipe 600, a waste water valve 610, a first switching control valve 620, a first switching pipe 700, Booster pump 710, second conversion tube 800.
  • the structure of the composite filter element assembly 1000 has been described in detail at the front, and will not be repeated here.
  • the water inlet pipe 400 is connected to the first inlet 101 of the composite filter element assembly 1000.
  • tap water or raw water from other water sources
  • the first filter 10 will perform preliminary filtering on the tap water.
  • the pure water pipe 500 is connected to the third inlet 201 of the composite filter element assembly 1000.
  • the pure water after the multi-stage filtration of the composite filter element assembly 1000 flows out through the third inlet and outlet 201, and then is led out by the pure water pipe 500.
  • the waste water pipe 600 is connected to the fifth inlet 301 of the composite filter element assembly 1000. Here, through the waste water pipe 600, the high-salinity waste water generated after being filtered by the second filter 20 can be led out.
  • the waste water valve 610 is connected to the waste water pipe 600 in series.
  • the opening of the waste water valve 610 can control the discharge of waste water with high salt content in the third filter unit 30 to ensure the normal operation of the third filter assembly 30.
  • the first switching control valve 620 is connected in series to the waste water pipe 600, and the first switching control valve 620 is located between the waste water valve 610 and the fifth inlet 301.
  • the first switching control valve 620 can control whether the fifth inlet and outlet 301 and a section of the waste water pipe 600 connected thereto discharge liquid to the waste water pipe 600 at the rear end.
  • the setting of the first switching control valve 620 can prevent the waste water in the third filter 30 from reaching the waste water valve 610 through the connected waste water pipe 600 under pressure, which can slow down the conductivity increase of the waste water valve 610 and initially guarantee the waste water valve 610 is not easy to scale.
  • the first conversion tube 700 is respectively connected to the second inlet 102 and the fourth inlet 302, and the booster pump 710 is connected in series to the first conversion tube 700.
  • the first conversion tube 700 communicates with the flow path between the first filter element 10 and the third filter element 20, so that the pre-filtered water filtered by the first filter element 10 enters the fifth uniform distribution in the third filter element 30 In the flow channel 31.
  • the filtering speed can be accelerated and the filtering efficiency can be improved.
  • the third filter element 20 adopts a reverse osmosis membrane module or an ultrafiltration membrane module, the conversion of low-ion concentration pre-effluent to high-ion concentration wastewater and pure water can be completed.
  • the second conversion pipe 800 is connected to the first conversion pipe 700 and the waste water pipe 600 respectively.
  • the connection point of the second conversion pipe 800 and the waste water pipe 600 is located between the waste water valve 610 and the first conversion control valve 620, and the second conversion pipe 800 is connected to the first
  • the connection point of a conversion tube 700 is located between the booster pump 710 and the second inlet and outlet 102.
  • the second conversion tube 800 here serves as a branch connecting the low-salinity pre-water.
  • the second switching tube 800 can introduce low salinity pre-water into the waste water valve 610, replace the high salinity waste liquid in the waste water valve 610, reduce the probability of scaling in the waste water valve 610, increase the service life of the waste water valve 610, and further ensure the waste water Valve 610 is not structurally reliable.
  • the first switching control valve 620 and the booster pump 710 are opened, and the waste water valve 610 is closed.
  • the second conversion tube 800 can The pre-membrane pressure of the third filter 30 is reduced to prevent the membrane from being damaged due to the high pre-membrane pressure, and the service life of the third filter 30 is extended.
  • the water filtered by the third filter 30 can be filtered from the second conversion tube 800, the first conversion tube 700, and then returned to the second filter unit 200. Under multiple filtration, most of the water molecules can pass through the third filter The piece 30 flows to the first filtering unit 100, so that the amount of waste water is not discharged much, and the recovery rate of pure water can be ensured.
  • the first filter unit 100 and the second filter unit 200 are spaced apart in the axial direction, and are connected by the transition flow channel 24.
  • the two filter units are compactly matched.
  • the transition flow channel 24 replaces the third filter 30 and the second filter.
  • the external connection pipes required for the communication between the pieces 20 not only save the external water inlet connection pipe of the second filter element 20, but also save the external water outlet connection pipe of the third filter element 30, so that the water purification system 2000 overall saves the external
  • the number of pipes and the difficulty of layout increase the simplicity of the overall design of the water purification system 2000, prevent system clogging, and increase the reliability of the water purification system 2000 operation.
  • the water purification system 2000 of the present application greatly reduces the overall layout space and saves In addition to the layout of external pipelines, the external pipelines arranged in the system are relatively concentrated and easy to arrange.
  • the raw water entering the water purification system 2000 is preliminarily purified by the first filtering element 10 of the first filtering unit 100, then enters the second filtering unit 200 for filtering, and then returns to the first filtering
  • the unit 100 is filtered by the second filter 20.
  • it before entering the second filter unit 200, it is pressurized by the booster pump 710, so that the water flow can pass through the third filter 30 at a high pressure, and the filtration efficiency is improved.
  • the composite filter element assembly 1000 is arranged in such a manner that the filter elements (first filter element 10, second filter element 20) that can be filtered under normal pressure or low pressure are concentrated in the first filter unit 100, and the filter element that requires high-pressure filtration (section Three filter elements 30) are concentrated in the second filter unit 200, and the two are arranged separately.
  • the connection of each part of the first filter unit 100 can be assembled according to the requirements of normal pressure, to avoid excessive assembly costs, and the second filter unit 200 The connection of each part is assembled according to the high voltage requirements.
  • the water purification system 2000 further includes: a second switching control valve 720, the second switching control valve 720 is connected in series to the first switching tube 700, the second The switching control valve 720 is located between the connection point of the second switching tube 800 and the first switching tube 700 and the second inlet and outlet 102.
  • the second switching control valve 720 may control the circulation and cutoff of the water flow of the pre-exit water in the first switching tube 700 and the second switching tube 800. The system is judged by blocking the flow of the water flow on the first switching tube 700.
  • a second switching control valve 720 is provided on the first switching tube 700 to control the entire system, it can also prevent the water flow in the second filter unit 200 from flowing back along the first conversion tube 700.
  • the water purification system 2000 further includes: a high-pressure switch 510 connected in series on the pure water pipe 500, and the high-pressure switch 510 is electrically coupled with the booster pump 710.
  • the high-pressure switch 510 is provided on the pure water pipe 500.
  • the booster pump 710 is turned off to stop the composite filter element assembly 1000 from purifying water .
  • the high-pressure switch 510 is electrically connected to the booster pump 710, and can control the opening and closing of the booster pump 710, so that the third filter 30 can operate normally and purify the water.
  • the booster pump 710 is electrically connected to the first switching control valve 620, and the booster pump 710 and the first switching control valve 620 are opened and closed at the same time. If any one of the booster pump 710 and the first switching control valve 620 is stopped, the other is stopped in conjunction, so that the water purification system 2000 stops normal filtration, and then the high-salinity waste water in the reflux replacement filtration waste water valve 610 is opened. Facilitates the switching and control of the two flow path states.
  • the water purification system 2000 further includes: a first one-way valve 520 connected in series on the pure water pipe 500.
  • the first one-way valve 520 ensures that the drinking water filtered from the second filter 20 flows to the final water end without reverse flow, so that the water purification system 2000 operates stably and reliably.
  • the water purification system 2000 further includes: a second one-way valve 630 connected in series to the waste water pipe 600, and the second one-way valve 630 is located in the second conversion pipe 800 is between the connection point on the waste water pipe 600 and the waste water valve 610.
  • This second one-way valve 630 ensures that the high-salinity waste water flowing out from the front end of the waste water pipe 600 during normal filtration always flows toward the waste water valve 610 without reverse flow; it ensures that the low outflow from the second conversion pipe 800 when replacing the waste water valve 610 The pre-salted water of the salinity always flows toward the waste water valve 620 without reverse flow, which ensures the stable and reliable operation of the water purification system 2000 and the interference of each pipeline system.
  • the waste water valve 610 is an adjustable waste water valve.
  • the waste water valve 610 is a cumulative flush. That is, when the waste liquid accumulates to a certain amount, or when the total time for normal filtration and purification of water production accumulates to a certain time, the control system controls the waste water valve 610 to open once.
  • the waste water valve 610 is a standby flush.
  • a third switching control valve 810 is provided on the second switching tube 800.
  • the third switching control valve 810 can control the flow path of the second switching tube 800 or cut off.
  • the third switching control valve 810 is high salinity wastewater; during backwashing replacement, the third switching control valve 810 is low salinity pre-effluent.
  • the third switching valve 810 is a common waste water solenoid valve, which is in the form of one-way outflow waste water holding pressure and reverse straight discharge.
  • the following specific embodiments use purified tap water as an example to describe the three-stage filtration function of the composite filter element assembly 1000, and explain the highly integrated integrated design structure of the composite filter element assembly 1000.
  • the first filter 10 will be described as an example of the primary filter; the third filter 30 will be described as an example of intermediate filter.
  • the second filter 20 will be described as an example of final filtration.
  • the entire composite filter element assembly 1000 is normally installed in a vertical state. It includes a housing 300, and a first filter unit 100 and a second filter unit 200 that are spaced apart in the axial direction in the housing 300, and a transition flow channel 24 is provided between the first filter unit 100 and the second filter unit 200 to communicate .
  • first filtering unit 100 a first uniformly distributed flow channel 11, a first filter channel 13, a second uniformly distributed flow channel 12, a third uniformly distributed flow channel 21, a third The second filter channel 23 and the fourth uniform distribution channel 22.
  • the first filter channel 13 is provided with a roll-shaped first filter element 10 rolled by a non-woven fabric, a polypropylene layer, carbon fiber, and a spacer 49.
  • the first filter element 10 serves as a preliminary filtering unit for tap water, and a spacer 49 is supported in the second uniform flow channel 12.
  • the first uniformly distributed flow channel 11 and the second uniformly distributed flow channel 12 communicate with each other through the first filter channel 13.
  • the first uniformly distributed flow channel 11 is connected to the first inlet and outlet 101 of tap water raw water, and the second uniformly distributed flow channel 11
  • the flow channel 12 is connected to the second inlet and outlet 102, and the pre-water filtered by the first filter 10 flows out from the second inlet and outlet 102.
  • a hollow carbon rod is provided in the second filter channel 23 as the second filter 20.
  • the second filter 20 serves as a final filtering unit before drinking water is discharged.
  • the third uniform flow channel 21 and the fourth uniform flow channel 22 communicate with each other through the second filter channel 23.
  • the third uniform distribution channel 21 is connected to the transition channel 24, and the fourth uniform distribution channel 22 is connected to the third inlet 201, which serves as the final outlet of drinking water.
  • the second uniformly distributed flow path 12 and the third uniformly distributed flow path 21 are spaced apart by a waterway spacer 46.
  • the first filter unit 100 is provided with a first inner end cap 41, a first outer end cap 42, a second middle end cap 45, a second inner end cap 43, a second outer end cap 44, and the first inner end cap 41 is sealed At the end surfaces of the second filter channel 23 and the fourth uniform flow channel 22 facing the second filter unit 200.
  • the first outer end cover 42 is sealed on the end surfaces of the first filter channel 13 and the second uniform flow channel 12 facing the second filter unit 200. A certain gap is formed between the bottom of the first inner end cover 41 and the top of the first outer end cover 42.
  • the first outer end cap 42 is connected to the bottom of the waterway spacer 46 and the two are integrally formed.
  • the second outer end cap 44 is sealed on the end surface of the first filter channel 13 away from the second filter unit 200, and the second inner end cap 43 is sealed on the end surface of the second filter channel 23 away from the second filter unit 200.
  • a second middle end cap 45 is also sleeved between the second outer end cap 44 and the second inner end cap 43, and the flow path between the second middle end cap 45 and the second outer end cap 44 communicates with the second inlet 102.
  • the second filter unit 200 is provided with a third filter 30 composed of a lateral flow reverse osmosis membrane module.
  • the third filter 30 serves as an intermediate filter before carbon filtration.
  • a fifth uniform flow channel 31 and a third filter channel 32 are provided in this order from outside to inside in the radial direction.
  • the third filter channel 32 is disposed around the filtered water circulation chamber and the waste water circulation chamber, and the third filter passage
  • the third filter 30 is provided in the 32, the waste water circulation cavity and the fifth uniform distribution channel 31 are communicated through the third filter channel 32, and the waste water circulation cavity is also connected to the wastewater header 34 in the reverse osmosis membrane module, the fifth uniform distribution
  • the flow channel 31 communicates with the fourth inlet and outlet 302, and the fourth inlet and outlet 302 and the second inlet and outlet 102 are communicated through an external pipeline, and before the pre-water enters the fourth inlet and outlet 302, pressurization is required.
  • the second filter unit 200 is provided with a filtered water circulation chamber and a waste water circulation chamber.
  • a filter membrane 35 is provided between the filtered water circulation chamber and the waste water circulation chamber.
  • the filtered water circulation chamber communicates with the transition channel 24, and the transition channel 24 communicates with reverse osmosis
  • the central pipe 33 of the membrane module and the waste water circulation cavity communicate with the fifth inlet 301, and the fifth inlet 301 serves as a waste water outlet for the reverse osmosis membrane module to purify the pre-water.
  • the second filter unit 200 is provided with a third end cap 47 and a fourth end cap 48.
  • the third end cap 47 is sealed at the end of the third filter channel 32 and the waste water circulation cavity facing the first filter unit 100
  • the fourth end cap 48 is sealed at the third filter channel 32 and the end of the filtered water circulation cavity away from the first filter unit 100 At the end.
  • Five wastewater headers 34 are supported between the third end cover 47 and the fourth end cover 48.
  • the middle of the fourth end cover 48 supports the bottom end of the central tube 33, and the middle of the third end cover 47 is provided with a through hole.
  • a second cannula 471 and a third cannula 472 nested in each other are provided in the through hole, the top end of the central tube 33 is connected to the third cannula 472, and the second cannula 471 is connected to the transition flow channel 24.
  • the first filter unit 100 is a low-pressure part, and the water pressure of the uniform distribution channel and the filter channel is low.
  • the second filter unit 200 is a high-pressure part, and the water pressure of the uniform distribution channel and the filter channel is high.
  • the water discharged from the second inlet and outlet 102 flows to the fourth inlet and outlet 302 after being pressurized by the pump.
  • 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 channel 24.
  • the pure water enters the third uniform distribution channel 21 from the transition channel 24, and is filtered by the second filter 20, enters the fourth uniform distribution channel 22, and flows out of the third inlet 201 for drinking.
  • a water purification system 2000 includes: a composite filter element assembly 1000, a water inlet pipe 400, a pure water pipe 500, a high-pressure switch 510, a first check valve 520, a waste water pipe 600, a waste water valve 610, a first conversion pipe 700, a boost The pump 710, the second switching control valve 720 and the faucet 900.
  • a composite filter element assembly 1000 As shown in FIG. 13 and FIG. 16, a composite filter element assembly 1000, the entire composite filter element assembly 1000 is normally installed in a vertical state. It includes a housing 300, and a first filter unit 100 and a second filter unit 200 that are spaced apart in the axial direction in the housing 300, and a transition flow channel 24 is provided between the first filter unit 100 and the second filter unit 200 to communicate .
  • first filtering unit 100 a first uniformly distributed flow channel 11, a first filter channel 13, a second uniformly distributed flow channel 12, a third uniformly distributed flow channel 21, a third The second filter channel 23 and the fourth uniform distribution channel 22.
  • the first filter channel 13 is provided with a roll-shaped first filter element 10 rolled by a non-woven fabric, a polypropylene layer, carbon fiber, and a spacer 49.
  • the first filter element 10 serves as a preliminary filtering unit for tap water, and a spacer 49 is supported in the second uniform flow channel 12.
  • the first uniform flow channel 11 and the second uniform flow channel 12 communicate with each other through the first filter channel 13.
  • the first uniform flow channel 11 is connected to the first inlet 101 of the tap water raw water, and the second uniform distribution channel 11
  • the flow channel 12 is connected to the second inlet and outlet 102, and the pre-water filtered by the first filter 10 flows out from the second inlet and outlet 102.
  • a hollow carbon rod is provided in the second filter channel 23 as the second filter 20.
  • the second filter 20 serves as a final filtering unit before drinking water is discharged.
  • the third uniform flow channel 21 and the fourth uniform flow channel 22 communicate with each other through the second filter channel 23.
  • the third uniform distribution channel 21 is connected to the transition channel 24, and the fourth uniform distribution channel 22 is connected to the third inlet 201, which serves as the final outlet of drinking water.
  • the second uniformly distributed flow path 12 and the third uniformly distributed flow path 21 are spaced apart by a waterway spacer 46.
  • the first filter unit 100 is provided with a first inner end cap 41, a first outer end cap 42, a second middle end cap 45, a second inner end cap 43, a second outer end cap 44, and the first inner end cap 41 is sealed At the end surfaces of the second filter channel 23 and the fourth uniform flow channel 22 facing the second filter unit 200.
  • the first outer end cover 42 is sealed on the end surfaces of the first filter channel 13 and the second uniform flow channel 12 facing the second filter unit 200. A certain gap is formed between the bottom of the first inner end cover 41 and the top of the first outer end cover 42.
  • the first outer end cover 42 is connected to the bottom of the waterway spacer 46 and the two are integrally formed.
  • the second outer end cap 44 is sealed on the end surface of the first filter channel 13 away from the second filter unit 200, and the second inner end cap 43 is sealed on the end surface of the second filter channel 23 away from the second filter unit 200.
  • a second middle end cap 45 is also sleeved between the second outer end cap 44 and the second inner end cap 43, and the flow path between the second middle end cap 45 and the second outer end cap 44 communicates with the second inlet 102.
  • the second filter unit 200 is provided with a third filter 30 composed of a lateral flow reverse osmosis membrane module.
  • the third filter 30 serves as an intermediate filter before carbon filtration.
  • a fifth uniform flow channel 31 and a third filter channel 32 are provided in this order from outside to inside in the radial direction.
  • the third filter channel 32 is disposed around the filtered water circulation chamber and the waste water circulation chamber, and the third filter passage
  • the third filter 30 is provided in the 32, the waste water circulation cavity and the fifth uniform distribution channel 31 are communicated through the third filter channel 32, and the waste water circulation cavity is also connected to the wastewater header 34 in the reverse osmosis membrane module, the fifth uniform distribution
  • the flow channel 31 communicates with the fourth inlet and outlet 302, and the fourth inlet and outlet 302 and the second inlet and outlet 102 are communicated through an external pipeline, and before the pre-water enters the fourth inlet and outlet 302, pressurization is required.
  • the second filter unit 200 is provided with a filtered water circulation chamber and a waste water circulation chamber.
  • a filter membrane 35 is provided between the filtered water circulation chamber and the waste water circulation chamber.
  • the filtered water circulation chamber communicates with the transition channel 24, and the transition channel 24 communicates with reverse osmosis
  • the central pipe 33 of the membrane module and the waste water circulation cavity communicate with the fifth inlet 301, and the fifth inlet 301 serves as a waste water outlet for the reverse osmosis membrane module to purify the pre-water.
  • the second filter unit 200 is provided with a third end cap 47 and a fourth end cap 48.
  • the third end cap 47 is sealed at the end of the third filter channel 32 and the waste water circulation cavity facing the first filter unit 100
  • the fourth end cap 48 is sealed at the third filter channel 32 and the end of the filtered water circulation cavity away from the first filter unit 100 At the end.
  • Five wastewater headers 34 are supported between the third end cover 47 and the fourth end cover 48.
  • the middle of the fourth end cover 48 supports the bottom end of the central tube 33, and the middle of the third end cover 47 is provided with a through hole.
  • a second cannula 471 and a third cannula 472 nested in each other are provided in the through hole, the top end of the central tube 33 is connected to the third cannula 472, and the second cannula 471 is connected to the transition flow channel 24.
  • the upper cover 310 of the housing of the composite filter element assembly 1000 is provided with a first inlet 101 for tap water, and the first inlet 101 is connected to a water inlet pipe 400 for tap water.
  • the upper cover 310 of the housing of the composite filter element assembly 1000 is provided with a third inlet 201 that can output high-quality pure water, and the third inlet 201 is connected to one end of the pure water pipe 500.
  • a first check valve 520 is provided on the pure water pipe 500 near the third inlet 201.
  • a high-pressure switch 510 is also provided on the pure water pipe 500, and the end of the pure water pipe 500 is connected to the faucet 900 for water.
  • the upper cover 310 of the housing of the composite filter element assembly 1000 is provided with a second inlet and outlet 102 that can supply pre-water, and the second inlet and outlet 102 is connected to one end of the first conversion tube 700.
  • the lower cover 320 of the housing of the composite filter element assembly 1000 is provided with a fourth inlet 302 into which reverse osmosis pre-water can enter.
  • the fourth inlet 302 is connected to the other end of the first conversion tube 700.
  • the first switching tube 700 is provided with a booster pump 710 and a second switching control valve 720 in series, and the second switching control valve 720 is located at an end close to the second inlet and outlet 102.
  • the high-pressure switch 510 and the second switching control valve 720 are electrically connected.
  • the lower cover 320 of the housing of the composite filter element assembly 1000 is provided with a fifth inlet and outlet 301 that can discharge high salinity waste water during reverse osmosis filtration.
  • One end of the fifth inlet and outlet is connected to the waste water pipe 600. 610.
  • the waste water valve 610 adopts an adjustable waste water valve for flushing.
  • the entire tap water filtration process is to keep the second switching control valve 720, booster pump 710, first check valve 520, and high pressure switch 510 open.
  • the tap water enters from the inlet pipe 400 and enters the first uniform flow channel 11 from the first inlet and outlet 101, and flows radially inward, passing through the first filter element 10 (with nonwoven fabric, polypropylene layer, carbon fiber, and spacer bracket 49 is a roll-shaped primary filter element after being filtered, flows to the second uniform distribution channel 12, and flows out from the second inlet and outlet 102 at the upper part as pre-water into the first conversion tube 700.
  • the outgoing pre-water is pressurized and pumped into the fourth inlet and outlet 302, and is evenly distributed in the fifth uniform distribution channel 31, from the side of the third filter 30 (side flow reverse osmosis water-saving membrane) Inflow and filtering by the third filter 30, high salinity wastewater is collected by the wastewater header 34 and discharged from the fifth inlet 301 to the wastewater pipe 600, after a certain time or the amount of waste liquid is accumulated, the wastewater valve 610 opens Discharge once.
  • the pure water is collected by the central tube 33 upward and passes through the transition port 332.
  • Pure water enters the third uniform flow channel 21 from the transition port 332, and is filtered by the second filter 20 (carbon cartridge), enters the fourth uniform distribution channel 22, and flows out from the third inlet 201 to the pure water pipe 500 On the first, after the first one-way valve 520 flows out to the faucet 900 for the user to drink.
  • the second filter 20 carbon cartridge
  • a water purification system 2000 includes: a composite filter element assembly 1000, an inlet pipe 400, a pure water pipe 500, a high-pressure switch 510, a first check valve 520, a waste pipe 600, and a waste valve 610
  • a composite filter element assembly 1000 As shown in FIG. 14 and FIG. 15, a composite filter element assembly 1000, the entire composite filter element assembly 1000 is normally installed in a vertical state. It includes a housing 300, and a first filter unit 100 and a second filter unit 200 that are spaced apart in the axial direction in the housing 300, and a transition flow channel 24 is provided between the first filter unit 100 and the second filter unit 200 to communicate .
  • first filtering unit 100 a first uniformly distributed flow channel 11, a first filter channel 13, a second uniformly distributed flow channel 12, a third uniformly distributed flow channel 21, a third The second filter channel 23 and the fourth uniform distribution channel 22.
  • the first filter channel 13 is provided with a roll-shaped first filter element 10 rolled by a non-woven fabric, a polypropylene layer, carbon fiber, and a spacer 49.
  • the first filter element 10 serves as a preliminary filtering unit for tap water, and a spacer 49 is supported in the second uniform flow channel 12.
  • the first uniformly distributed flow channel 11 and the second uniformly distributed flow channel 12 communicate with each other through the first filter channel 13, the first uniformly distributed flow channel 11 is connected to the first inlet and outlet 101 of tap water raw water, and the second uniformly distributed flow channel 11
  • the flow channel 12 is connected to the second inlet and outlet 102, and the pre-water filtered by the first filter 10 flows out from the second inlet and outlet 102.
  • a hollow carbon rod is provided in the second filter channel 23 as the second filter 20.
  • the second filter 20 serves as a final filtering unit before drinking water is discharged.
  • the third uniform distribution channel 21 and the fourth uniform distribution channel 22 communicate with each other through the second filtering channel 23.
  • the third uniform distribution channel 21 is connected to the transition channel 24, and the fourth uniform distribution channel 22 is connected to the third inlet 201, which serves as the final outlet of drinking water.
  • the second uniformly distributed flow path 12 and the third uniformly distributed flow path 21 are spaced apart by a waterway spacer 46.
  • the first filter unit 100 is provided with a first inner end cap 41, a first outer end cap 42, a second middle end cap 45, a second inner end cap 43, a second outer end cap 44, and the first inner end cap 41 is sealed At the end surfaces of the second filter channel 23 and the fourth uniform flow channel 22 facing the second filter unit 200.
  • the first outer end cover 42 is sealed on the end surfaces of the first filter channel 13 and the second uniform flow channel 12 facing the second filter unit 200. A certain gap is formed between the bottom of the first inner end cover 41 and the top of the first outer end cover 42.
  • the first outer end cover 42 is connected to the bottom of the waterway spacer 46 and the two are integrally formed.
  • the second outer end cap 44 is sealed on the end surface of the first filter channel 13 away from the second filter unit 200, and the second inner end cap 43 is sealed on the end surface of the second filter channel 23 away from the second filter unit 200.
  • a second middle end cap 45 is also sleeved between the second outer end cap 44 and the second inner end cap 43, and the flow path between the second middle end cap 45 and the second outer end cap 44 communicates with the second inlet 102.
  • the second filter unit 200 is provided with a third filter 30 composed of a lateral flow reverse osmosis membrane module.
  • the third filter 30 serves as an intermediate filter before carbon filtration.
  • a fifth uniform flow channel 31 and a third filter channel 32 are provided in this order from outside to inside in the radial direction.
  • the third filter channel 32 is disposed around the filtered water circulation chamber and the waste water circulation chamber, and the third filter passage
  • the third filter 30 is provided in the 32, the waste water circulation cavity and the fifth uniform distribution channel 31 are communicated through the third filter channel 32, and the waste water circulation cavity is also connected to the wastewater header 34 in the reverse osmosis membrane module, the fifth uniform distribution
  • the flow channel 31 communicates with the fourth inlet and outlet 302, and the fourth inlet and outlet 302 and the second inlet and outlet 102 are communicated through an external pipeline, and before the pre-water enters the fourth inlet and outlet 302, pressurization is required.
  • the second filter unit 200 is provided with a filtered water circulation chamber and a waste water circulation chamber.
  • a filter membrane 35 is provided between the filtered water circulation chamber and the waste water circulation chamber.
  • the filtered water circulation chamber communicates with the transition channel 24, and the transition channel 24 communicates with reverse osmosis
  • the central pipe 33 of the membrane module and the waste water circulation cavity communicate with the fifth inlet 301, and the fifth inlet 301 serves as a waste water outlet for the reverse osmosis membrane module to purify the pre-water.
  • the second filter unit 200 is provided with a third end cap 47 and a fourth end cap 48.
  • the third end cap 47 is sealed at the end of the third filter channel 32 and the waste water circulation cavity facing the first filter unit 100
  • the fourth end cap 48 is sealed at the third filter channel 32 and the end of the filtered water circulation cavity away from the first filter unit 100 At the end.
  • Five wastewater headers 34 are supported between the third end cover 47 and the fourth end cover 48.
  • the middle of the fourth end cover 48 supports the bottom end of the central tube 33, and the middle of the third end cover 47 is provided with a through hole.
  • a second cannula 471 and a third cannula 472 nested in each other are provided in the through hole, the top end of the central tube 33 is connected to the third cannula 472, and the second cannula 471 is connected to the transition flow channel 24.
  • the upper cover 310 of the housing of the composite filter element assembly 1000 is provided with a first inlet 101 for tap water, and the first inlet 101 is connected to the inlet pipe 400 for tap water.
  • the upper cover 310 of the housing of the composite filter element assembly 1000 is provided with a third inlet 201 that can output high-quality pure water.
  • a first check valve 520 is provided on the pure water pipe 500 near the third inlet 201.
  • a high-pressure switch 510 is also provided on the pure water pipe 500. The end of the pure water pipe 500 communicates with the water tap 900.
  • the upper cover 310 of the housing of the composite filter element assembly 1000 is provided with a second inlet and outlet 102 that can supply pre-water, and the second inlet and outlet 102 is connected to one end of the first conversion tube 700.
  • the lower cover 320 of the housing of the composite filter element assembly 1000 is provided with a fourth inlet 302 into which reverse osmosis pre-water can enter.
  • the fourth inlet 302 is connected to the other end of the first conversion tube 700.
  • the first switching tube 700 is provided with a booster pump 710 and a second switching control valve 720 in series, and the second switching control valve 720 is close to one end of the second inlet and outlet 102.
  • the high-pressure switch 510 and the booster pump 710 are electrically connected.
  • the lower cover 320 of the housing of the composite filter element assembly 1000 is provided with a fifth inlet and outlet 301 that can discharge high salinity wastewater during reverse osmosis filtration.
  • One end of the fifth inlet and outlet 301 communicates with the wastewater pipe 600, and the wastewater pipe 600 is provided with wastewater Valve 610.
  • the waste water valve 610 adopts an adjustable waste water valve for flushing.
  • the first switching control valve 620 is located between the waste water valve 610 and the fifth inlet and outlet 301.
  • the second conversion pipe 800 as a branch is connected to the first conversion pipe 700 and the waste water pipe 600 respectively.
  • the connection point of the second conversion pipe 800 and the waste water pipe 600 is located between the waste water valve 610 and the first conversion control valve 620.
  • the connection point of the tube 800 and the first switching tube 700 is located between the booster pump 710 and the second switching control valve 720.
  • a third switching control valve 810 is provided on the second switching tube 800.
  • the second one-way valve 630 is located between the connection point of the second switching tube 800 on the waste water pipe 600 and the waste water valve 610.
  • the entire tap water filtration and purification process is to maintain the first switching control valve 620, the second switching control valve 720, the booster pump 710, the first check valve 520, the second check valve 630, the high-pressure switch 510, the third switching The control valve 810 opens.
  • the tap water enters from the water inlet pipe 400, enters the first uniform flow channel 11 from the first inlet and outlet 101, and flows radially inward, passing through the first filter 10 (with nonwoven fabric, polypropylene layer, carbon fiber, and spacer bracket) 49 is a roll-shaped primary filter element after being filtered, flows to the second uniform distribution channel 12, and flows out from the second inlet and outlet 102 at the upper part as pre-water into the first conversion tube 700.
  • the outgoing pre-water is pressurized and pumped into the fourth inlet and outlet 302, and is evenly distributed in the fifth uniform distribution channel 31, circumferentially from the side of the third filter 30 (side flow reverse osmosis water-saving membrane) Inflow and filtering by the third filter 30, high salinity wastewater is collected by the wastewater header 34 and discharged from the fifth inlet 301 to the wastewater pipe 600, after a certain time or the amount of waste liquid is accumulated, the wastewater valve 610 opens Discharge once. A part of the high-salinity wastewater enters the second conversion tube 800 and returns to the booster pump 710 before it improves the recovery rate of pure water. The pure water is collected by the central tube 33 upward and passes through the transition port 332.
  • Pure water enters the third uniform flow channel 21 from the transition port 332, and is filtered by the second filter 20 (charcoal cartridge), enters the fourth uniform distribution channel 22, and flows out from the third inlet 201 to the pure water pipe 500 On the first, after the first one-way valve 520 flows out to the faucet 900 for the user to drink.
  • the second filter 20 charcoal cartridge
  • the first switching control valve 620 is closed, and the high salinity water in the waste water valve 610 is replaced by the tap water pressure. This process lasts 15 to 20 seconds to ensure that the waste water valve 610 has no residual water with high conductivity.
  • the replacement water is the pre-outlet water after the initial filtration.
  • the entire flushing process of the waste water valve 610 is to close the booster pump 710 and the first switching control valve 620 to stop the filtration of purified water, and maintain the second switching control valve 720, the first check valve 520, the second check valve 630, and the high pressure
  • the switch 510 and the third switching control valve 810 are opened.
  • the pre-water flowing out of the second inlet and outlet 102 flows into the first conversion pipe 700 and then directly flows into the second conversion pipe 800, and before passing to the waste water valve 610, the waste water valve 610 is opened to completely replace the high-concentration waste water To prevent scaling of the waste water valve 610.
  • 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.
  • the flow channel structure of the composite filter element assembly 1000 and other components of the water purification system 2000 according to the embodiments of the present application, such as the filtration function of each filter assembly and the selection of the material of each filter assembly, are known to those of ordinary skill in the art. , Will not be described in detail here.

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

Abstract

L'invention concerne une structure de canal d'écoulement pour un ensemble cartouche filtrante composite (1000) et un système de purification d'eau (2000). La structure de canal d'écoulement pour un ensemble cartouche filtrante composite comprend une première unité filtrante (100) et une seconde unité filtrante (200) espacées l'une de l'autre dans la direction axiale, la seconde unité filtrante étant pourvue intérieurement d'un élément filtrant. La première unité filtrante comporte intérieurement, en séquence de l'extérieur vers l'intérieur dans la direction radiale, un premier canal d'écoulement de distribution uniforme (11) et un second canal d'écoulement de distribution uniforme (12) communiquant l'un avec l'autre au moyen d'un premier canal filtrant (13), et un troisième canal d'écoulement de distribution uniforme (21) et un quatrième canal d'écoulement de distribution uniforme (22) communiquant l'un avec l'autre au moyen d'un second canal filtrante (23), chacun des canaux filtrants est pourvu d'un élément filtrant, et le second canal de distribution uniforme et le troisième canal de distribution uniforme ne sont pas en communication l'un avec l'autre.
PCT/CN2019/114555 2018-10-31 2019-10-31 Structure de canal d'écoulement pour un ensemble cartouche filtrante composite et système de purification d'eau WO2020088557A1 (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
CN201811291164.9A CN111115878A (zh) 2018-10-31 2018-10-31 净水系统
CN201821786755.9 2018-10-31
CN201821786755.9U CN209481320U (zh) 2018-10-31 2018-10-31 净水系统
CN201811291171.9 2018-10-31
CN201811291164.9 2018-10-31
CN201821790153.0 2018-10-31
CN201821790153.0U CN209367960U (zh) 2018-10-31 2018-10-31 净水系统
CN201811289134.4 2018-10-31
CN201821786338.4U CN209307046U (zh) 2018-10-31 2018-10-31 复合滤芯组件的流道结构
CN201821786338.4 2018-10-31
CN201811289134.4A CN111115868A (zh) 2018-10-31 2018-10-31 复合滤芯组件的流道结构
CN201811291171.9A CN111115879A (zh) 2018-10-31 2018-10-31 净水系统

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WO2020088557A1 true WO2020088557A1 (fr) 2020-05-07

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