CN110255746B - Composite filter element assembly and water purification system - Google Patents
Composite filter element assembly and water purification system Download PDFInfo
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- CN110255746B CN110255746B CN201910713456.5A CN201910713456A CN110255746B CN 110255746 B CN110255746 B CN 110255746B CN 201910713456 A CN201910713456 A CN 201910713456A CN 110255746 B CN110255746 B CN 110255746B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 197
- 239000002131 composite material Substances 0.000 title claims abstract description 73
- 238000000746 purification Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 46
- 239000002351 wastewater Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000108 ultra-filtration Methods 0.000 claims description 6
- 238000001471 micro-filtration Methods 0.000 claims description 5
- 238000001728 nano-filtration Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 5
- 238000001223 reverse osmosis Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 3
- 210000000051 wattle Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920000297 Rayon Polymers 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 244000261422 Lysimachia clethroides Species 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
- C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/002—Processes for the treatment of water whereby the filtration technique is of importance using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/02—Location of water treatment or water treatment device as part of a bottle
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a composite filter element component and a water purification system, wherein the composite filter element component comprises: the filter comprises a bottle body (604) and more than five stages of filter elements arranged in the bottle body (604), wherein the filter elements comprise a first stage pretreatment filter element (201), a second stage pretreatment filter element (202), a fine filter element (203), a first stage post-treatment filter element (204) and a second stage post-treatment filter element (205); fluid is filtered through the first stage pretreatment cartridge (201), the second stage pretreatment cartridge (202), the fine filtration cartridge (203), the first stage post-treatment cartridge (204) and the second stage post-treatment cartridge (205) in that order along the flow direction of the fluid. The filter element integrates five-stage filtering functions, can improve the filtering effect, simultaneously can enable the volume of the filter element assembly and even the water purifier to be miniaturized, matches the service life of each filter element during design, and can solve the problem of frequent core replacement.
Description
Technical Field
The invention belongs to the technical field of water purification, and particularly relates to a composite filter element assembly and a water purification system.
Background
In recent years, the small size of the water purifier becomes an industry development trend, and more multistage composite filter cores are used on products. However, most of the existing composite filter elements are two-stage composite and three-stage composite, and compared with the traditional water purifier comprising a single-stage filter element, the volume of the existing composite filter element is obviously reduced. However, if the multi-stage filter element of the filter element composite water purifier can realize the purification effect, the volume of the water purifier is further reduced.
Because the water purifier in the prior art has the technical problems that the volume is large due to the fact that multistage filtration is additionally arranged for ensuring the filtration effect, and frequent core replacement is caused due to inconsistent core replacement period when each filter core is used independently, the invention designs a composite filter core component and a water purification system.
Disclosure of Invention
Therefore, the invention aims to overcome the defects that the water purifier in the prior art cannot ensure the better filtering effect and simultaneously can reduce the space volume, thereby providing the composite filter element assembly and the water purifying system.
The present invention provides a composite filter element assembly comprising:
the bottle body and the filter element with more than five stages arranged in the bottle body comprise a first-stage pretreatment filter element, a second-stage pretreatment filter element, a fine filter element, a first-stage post-treatment filter element and a second-stage post-treatment filter element; the fluid is filtered by passing through the first stage pretreatment filter element, the second stage pretreatment filter element, the fine filtration filter element, the first stage post-treatment filter element and the second stage post-treatment filter element in this order along the flow direction of the fluid.
Preferably, the method comprises the steps of,
The material of the first-stage pretreatment filter element is PP cotton; and/or, the second stage pretreatment cartridge (202) is a sintered carbon rod; and/or the fine filter element is a coiled reverse osmosis filter element or a coiled nanofiltration filter element; and/or the first stage post-treatment filter element is a sintered carbon rod; and/or the material of the second-stage post-treatment filter element is a microfiltration membrane and/or an ultrafiltration membrane.
Preferably, the method comprises the steps of,
The first-stage pretreatment filter element and the second-stage pretreatment filter element are positioned at the same height and are arranged inside and outside, and the first-stage pretreatment filter element is sleeved outside the second-stage pretreatment filter element.
Preferably, the method comprises the steps of,
The fine filter element is positioned above the first-stage pretreatment element or the second-stage pretreatment element, the first-stage post-treatment element is sleeved in the fine filter element, and the second-stage post-treatment element is sleeved in the fine filter element and positioned above the first-stage post-treatment element.
Preferably, the method comprises the steps of,
The fine filter core is arranged in the fine filter core and is positioned outside the first-stage aftertreatment filter core and the second-stage aftertreatment filter core, a central pipe is further arranged outside the fine filter core, and a first guide groove is formed in the outer wall surface of the central pipe, so that fluid is led to permeate into the first guide groove through the fine filter core.
Preferably, the method comprises the steps of,
The inside of the central tube is provided with a fifth cavity, the first stage post-treatment filter element and the second stage post-treatment filter element are arranged in the fifth cavity, the first guide groove extends linearly or curvilinearly along the axis direction of the central tube, and the first guide groove is not communicated with the fifth cavity.
Preferably, the method comprises the steps of,
The lower extreme of first guide way still communicates and is provided with the second guide way, the second guide way is set up and is located between inner wall and the outer wall of center tube, just the second guide way other end with the lower extreme intercommunication of center tube, in order to with the intercommunication of fifth cavity.
Preferably, the method comprises the steps of,
The interior of the first stage aftertreatment filter element has a seventh cavity, and fluid in the fifth cavity permeates through the first stage aftertreatment filter element into the seventh cavity.
Preferably, the method comprises the steps of,
The seventh cavity in the first stage aftertreatment filter element is upwards communicated with the second stage aftertreatment filter element, a pure water outlet is formed in the top end of the bottle body, and the upper end of the second stage aftertreatment filter element is communicated with the pure water outlet.
Preferably, the method comprises the steps of,
The bottle top still is provided with dense water export, the fine filtration filter core upper end with form ninth cavity between the bottle, just dense water export communicates with the ninth cavity.
Preferably, the method comprises the steps of,
The bottom end of the bottle body is provided with a first connecting end cover for sealing the lower end of the bottle body, and the first connecting end cover is provided with a water inlet; and/or, the bottom ends of the first-stage pretreatment filter element and the second-stage pretreatment filter element are also provided with second connecting end covers, the second connecting end covers are fixedly arranged on the bottle body and/or the first connecting end covers, the outer wall of each second connecting end cover is provided with a thorn, and a space allowing fluid to flow through is arranged between each second connecting end cover and the inner wall of the bottle body; and/or, the top ends of the first-stage pretreatment filter element and the second-stage pretreatment filter element are also provided with a third connecting end cover.
When the center tube is also included:
And/or a fourth connecting end cover is further arranged at the bottom end position of the central tube, and a gap is formed between the bottom end of the central tube and the fourth connecting end cover; and/or a fifth connecting end cover is further arranged between the first-stage aftertreatment filter element and the second-stage aftertreatment filter element, and a channel allowing fluid to circulate is arranged in the middle of the fifth connecting end cover.
Preferably, the method comprises the steps of,
A first sealing element is arranged in the water inlet; and/or a second sealing element is arranged between the third connecting end cover and the inner wall of the bottle body; and/or a third sealing element is arranged between the outer peripheral wall of the central tube and the inner peripheral wall of the fourth connecting end cover; and/or a fourth sealing piece is arranged between the top end of the first stage post-treatment filter element and the inner wall of the central tube; and/or a fifth sealing piece is arranged on the upper part of the fine filter element and the inner wall of the bottle body; and/or a second post-treatment bottle body is arranged between the second-stage post-treatment filter element and the central tube, and a sixth sealing piece is arranged on the outer wall of the upper end of the second post-treatment bottle body; and/or a seventh sealing piece is arranged between the central tube and the pure water outlet of the bottle body.
Preferably, the method comprises the steps of,
A first cavity is formed between the second connecting end cover and the first connecting end cover; and/or a second cavity is formed between the second connecting end cover and the second sealing piece; and/or the interior of the second stage pretreatment filter element is provided with a third cavity extending vertically upwards; and/or a fourth cavity is arranged between the second sealing piece and the fifth sealing piece; and/or the gap between the bottom end of the central tube and the fourth connecting end cover is a sixth cavity; and/or an eighth cavity is formed between the top end of the second stage aftertreatment filter element and the central tube.
The invention also provides a water purification system comprising the composite filter element assembly according to any one of the preceding claims.
Preferably, including water inlet pipeline, pure water pipeline and waste water pipeline, works as when compound filter core subassembly includes water inlet, dense water export and pure water export simultaneously, water inlet pipeline with the water inlet links to each other pure water pipeline with pure water export links to each other, waste water pipeline with dense water export links to each other, just be provided with pump and water intaking valve on the water inlet pipeline, waste water pipeline is provided with the waste water valve, be provided with the pure water valve on the pure water pipeline.
The composite filter element component and the water purification system provided by the invention have the following beneficial effects:
According to the invention, more than five stages of filter elements are arranged in the bottle body, fluid sequentially passes through the first stage pretreatment filter element, the second stage pretreatment filter element, the fine filtration filter element, the first stage post-treatment filter element and the second stage post-treatment filter element along the flowing direction of the fluid to be filtered, and the integrated composite filter element comprises five stages of filter elements which can be independently used on a water purifier to exert a purifying function, compared with the existing single-stage filter elements or two-stage, three-stage and even four-stage filter elements, the five-stage filter effect can be realized in one bottle body, the filter effect can be effectively improved, meanwhile, the filter element assembly and even the water purifier are miniaturized in volume, the filter element integrates the five-stage filter function, the service lives of the filter elements are matched in design, and the volume is considered, so that the integrated composite filter element has a large volume and only smaller volume than that when the filter element is independently used;
and set up the filter core in through a bottle, it is integrative to effectively collect five-stage filtration function, the life-span of each filter core has been matchd in the design, compare in the life-span between the bottle of single-stage filter core or second grade, tertiary even four-stage filter core has the mismatching and leads to the inconsistent problem of core replacement cycle, bring the frequent problem of core replacement, the life of the inside filter core of bottle is unanimous basically when changing inside filter core, therefore the core replacement cycle is unanimous, the integrative core replacement, the frequent problem of core replacement that the core replacement cycle that exists when effectively avoiding each filter core to use alone brings.
Drawings
FIG. 1 is a schematic view of the three-dimensional internal structure (flow path direction) of the composite cartridge assembly of the present invention and the structure of the cartridge portion and center tube identified;
FIG. 2 is a schematic view of the three-dimensional interior structure of the composite filter element assembly of FIG. 1 with seal member portions and cavity portions identified;
FIG. 3 is a schematic view of a partial enlarged structure of a portion C in FIG. 2;
FIG. 4 is a schematic exterior structural view of the composite filter element assembly of the present invention;
FIG. 5 is a schematic illustration of a composite cartridge waterway structure having a composite cartridge assembly of the present invention.
The reference numerals in the drawings are as follows:
10. A composite filter element; 200. a filter element; 201. a first stage pretreatment cartridge; 202. a second stage pretreatment cartridge; 203. a fine filtration cartridge; 204. a first stage post-treatment cartridge; 205. a second stage post-treatment cartridge; 301. a first seal; 302. a second seal; 303. a third seal; 304. a fourth seal; 305. a fifth seal; 306. a sixth seal; 307. a seventh seal; 401. a first connection end cap; 402. a second connecting end cap; 403. a third connecting end cap; 404. a fourth connecting end cap; 405. a fifth connecting end cap; 501. a first cavity; 502. a second cavity; 503. a third cavity; 504. a fourth cavity; 505. a fifth cavity; 506. a sixth cavity; 507. a seventh cavity; 508. an eighth cavity; 509. a ninth cavity; 602. a central tube; 603. a second post-treatment bottle body; 604. a bottle body; 701. a water inlet; 702. a concentrated water outlet; 703. a pure water outlet; 704. a handle; 801. a water inlet valve; 802. a pump; 804. a water outlet valve 805; a tap switch; 806. a gooseneck tap; 807. and a waste water valve.
Detailed Description
As shown in fig. 1-5, the present invention provides a composite filter element assembly comprising:
The bottle 604 and the filter elements with more than five stages are arranged in the bottle 604, and comprise a first stage pretreatment filter element 201, a second stage pretreatment filter element 202, a fine filter element 203, a first stage post-treatment filter element 204 and a second stage post-treatment filter element 205; fluid is filtered through the first stage pretreatment cartridge 201, the second stage pretreatment cartridge 202, the fine filtration cartridge 203, the first stage post-treatment cartridge 204, and the second stage post-treatment cartridge 205 in that order along the direction of fluid flow.
According to the invention, more than five stages of filter elements are arranged in the bottle body, fluid sequentially passes through the first stage pretreatment filter element, the second stage pretreatment filter element, the fine filtration filter element, the first stage post-treatment filter element and the second stage post-treatment filter element along the flowing direction of the fluid to be filtered, and the integrated composite filter element comprises five stages of filter elements which can be independently used on a water purifier to exert a purifying function, compared with the existing single-stage filter elements or two-stage, three-stage and even four-stage filter elements, the five-stage filter effect can be realized in one bottle body, the filter effect can be effectively improved, meanwhile, the filter element assembly and even the water purifier are miniaturized in volume, the filter element integrates the five-stage filter function, the service lives of the filter elements are matched in design, and the volume is considered, so that the integrated composite filter element has a large volume and only smaller volume than that when the filter element is independently used;
and set up the filter core in through a bottle, it is integrative to effectively collect five-stage filtration function, the life-span of each filter core has been matchd in the design, compare in the life-span between the bottle of single-stage filter core or second grade, tertiary even four-stage filter core has the mismatching and leads to the inconsistent problem of core replacement cycle, bring the frequent problem of core replacement, the life of the inside filter core of bottle is unanimous basically when changing inside filter core, therefore the core replacement cycle is unanimous, the integrative core replacement, the frequent problem of core replacement that the core replacement cycle that exists when effectively avoiding each filter core to use alone brings.
Preferably, the method comprises the steps of,
The material of the first stage pretreatment filter element 201 is PP cotton (preferably, PP cotton, paper folding PP cotton, etc.); and/or, the second stage pretreatment cartridge 202 is a sintered carbon rod; and/or, the fine filter element 203 is a roll-type reverse osmosis filter element or a roll-type nanofiltration filter element; and/or, the first stage aftertreatment filter element 204 is a sintered carbon rod; and/or, the material of the second stage post-treatment filter 205 is a microfiltration membrane and/or an ultrafiltration membrane.
The first-stage pretreatment filter element 201 can be spray-melted PP cotton or paper folding PP cotton, and has the main functions of performing first-stage filtration and removing pollutants such as large suspended matters, sediment, rust and the like in the water body; the second stage pretreatment filter element 202 can be a sintered carbon rod, and the function of the second stage pretreatment filter element is mainly to adsorb and remove residual chlorine, micromolecular organic matters and the like in the water body; the fine filter element 203 can be a coiled reverse osmosis filter element or a coiled nanofiltration filter element, and has the function of fine filtration, and can remove heavy metal ions, micromolecular organic matters and the like in the water body so as to realize the deep purification of the water body; the first stage post-treatment filter element 204 may be a sintered carbon rod that serves to improve the water-producing mouthfeel of the fine filter element 203; the second stage post-treatment filter 205 may be a micro-filtration membrane, an ultra-filtration membrane, etc., and is used for preventing the out-water microorganism from exceeding the standard and ensuring the sanitation and safety of the water.
Preferably, the method comprises the steps of,
The first-stage pretreatment filter element 201 and the second-stage pretreatment filter element 202 are located at the same height and are arranged inside and outside, and the first-stage pretreatment filter element 201 is sleeved outside the second-stage pretreatment filter element 202. Thus, the water flow enters the second-stage pretreatment filter element for treatment after the purification treatment of the first-stage pretreatment filter element outside, and the pretreatment or rough filtration before the fine filtration is realized.
Preferably, the method comprises the steps of,
The fine filter element 203 is located above the first stage pretreatment element 201 or the second stage pretreatment element 202, and the first stage post-treatment element 204 and the second stage post-treatment element 205 are both sleeved inside the fine filter element 203, and the second stage post-treatment element 205 is located above the first stage post-treatment element 204.
The layout form of the filter element structure is as follows: the first-stage pretreatment filter element 201 wraps or is nested on the outer surface of the filter element of the second-stage pretreatment filter element 202 to form an internal-external structural layout; the rear three-stage filter element and the front two-stage pretreatment filter element are in an up-down structural layout; the first-stage aftertreatment filter element 204 and the second-stage aftertreatment filter element 205 are filled in the central tube of the fine filter element 203; the structure layout can effectively omit an inner cylinder structure adopted in the prior art, the lower two-stage pretreatment filter element is fixedly arranged through the plurality of connecting end covers, the fixing arrangement of the fine filter element and the fixing arrangement of the two-stage aftertreatment filter element (comprising ultrafiltration) are realized through the arrangement of the plurality of connecting end covers and the central tube, the volume is effectively reduced, and the volume is miniaturized.
Preferably, the method comprises the steps of,
A central pipe 602 is further disposed inside the fine filter element 203 and outside the first stage aftertreatment element 204 and the second stage aftertreatment element 205, and a first guide groove a is disposed on an outer wall surface of the central pipe 602, so that fluid is led after penetrating into the first guide groove a through the fine filter element 203. Through the setting of center tube can realize the supporting role of center pin and can also collect the water of producing to back two-stage treatment filter core and meticulous filter core to can make meticulous water that filters the filter core and come can not directly get into the center tube inside through first guide way, but along first guide way direction at the center tube outer wall, further strengthened the further filterable length of meticulous filter core like this and increased the filter length of the inside two-stage aftertreatment filter core of center tube, further effectively improved the filter effect.
Preferably, the method comprises the steps of,
The center tube 602 has a fifth cavity 505 therein, the first stage aftertreatment filter element 204 and the second stage aftertreatment filter element 205 are disposed in the fifth cavity 505, the first guide groove a extends linearly or curvedly along the axial direction of the center tube 602, and the first guide groove a is not communicated with the fifth cavity 505. This is a preferred structural form of the center tube of the present invention, in which the first guide groove a extends in the axial direction without communicating with the fifth cavity, so that water coming from the fine filter element does not directly enter the inside of the center tube but is guided to the lower portion of the center tube along the first guide groove at the outer wall of the center tube, which effectively increases the further filtering length of the fine filter element and the filtering length of the two-stage post-treatment element inside the center tube, and maximizes the filtering length, further effectively improves the filtering effect.
Preferably, the method comprises the steps of,
The lower end of the first guide groove a is further communicated with a second guide groove B, the second guide groove B is located between the inner wall and the outer wall of the central tube 602, and the other end of the second guide groove B is communicated with the lower end of the central tube 602 so as to be communicated with the fifth cavity 505. Through set up the second guide way rather than leading out the fifth cavity at first guide way lower extreme and the second guide way is located between the inner and outer wall and the lower extreme intercommunication center tube, can lead the water that first guide way comes to the lower part of center tube through the second guide way and direct into the fifth cavity, rather than leading out the fifth cavity, further increase filtration length to prevent rivers leak outwards.
Preferably, the method comprises the steps of,
The first stage aftertreatment filter element 204 has a seventh cavity 507 within, and fluid in the fifth cavity 505 permeates through the first stage aftertreatment filter element 204 into the seventh cavity 507. Through setting up the seventh cavity in first order aftertreatment filter core inside for the water in the fifth cavity gets into the seventh cavity by filtration purification after the first aftertreatment filter core, provides clean water for getting into the second level aftertreatment filter core, makes the filter effect better.
Preferably, the method comprises the steps of,
The seventh cavity 507 inside the first stage aftertreatment filter element 204 is upwards communicated with the second stage aftertreatment filter element 205, a pure water outlet 703 is arranged at the top end of the bottle 604, and the upper end of the second stage aftertreatment filter element 205 is communicated with the pure water outlet 703. And the water after passing through the fine filter element flows out through the first-stage and second-stage post-treatment filter elements and is discharged from the top end, so that pure water is obtained.
Preferably, the method comprises the steps of,
The top end of the bottle 604 is further provided with a concentrated water outlet 702, a ninth cavity 509 is formed between the upper end of the fine filter element 203 and the bottle 604, and the concentrated water outlet 702 is communicated with the ninth cavity 509. The water filtered out from the fine filter element and not passing through the two-stage filter element is discharged through the ninth cavity and the concentrated water outlet, so that concentrated water (with higher salt content and no reference) is obtained.
Preferably, the method comprises the steps of,
The bottom end of the bottle 604 is provided with a first connecting end cover 401 to seal the lower end of the bottle 604, and the first connecting end cover 401 is provided with a water inlet 701; and/or, the bottom ends of the first stage pretreatment filter element 201 and the second stage pretreatment filter element 202 are further provided with a second connection end cover 402, the second connection end cover 402 is fixedly arranged on the bottle 604 and/or the first connection end cover 401, and a space allowing fluid to flow is formed between the outer wall of the second connection end cover 402 and the inner wall of the bottle 604; and/or, the top ends of the first stage pretreatment filter element 201 and the second stage pretreatment filter element 202 are further provided with a third connection end cover 403;
When the center tube 602 is also included:
And/or, a fourth connection end cover 404 is further disposed at the bottom end position of the central tube 602, and a gap is formed between the bottom end of the central tube 602 and the fourth connection end cover 404; and/or, a fifth connecting end cover 405 is further disposed between the first stage aftertreatment filter element 204 and the second stage aftertreatment filter element 205, and a channel allowing fluid to circulate is provided in the middle of the fifth connecting end cover 405.
The bottle body is characterized in that the bottle body is provided with a first connecting end cover, a second connecting end cover, a third connecting end cover, a fourth connecting end cover and a fifth connecting end cover, wherein the first connecting end cover is used for supporting the first and second post-treatment filter elements, the second connecting end cover is used for supporting the first and second post-treatment filter elements, the third connecting end cover is used for supporting the upper ends of the first and second pre-treatment filter elements, the fourth connecting end cover is used for supporting the first and second post-treatment filter elements, and the fifth connecting end cover is used for supporting the second post-treatment filter elements.
In order to successfully manufacture the composite filter element, it is necessary to include an end cap portion. The first connecting end cover 401 is a composite filter element bottle body end cover, can be in sealing connection with the composite filter element bottle body through spin melting and threads, and is provided with a limiting device for pressing the filter element during assembly so as to prevent water leakage caused by the fact that the filter element is not assembled in place; the second connecting end cover 402 is a lower fixed end cover of the first and second-stage pretreatment filter elements, and is fixed with the filter elements in a viscose manner, and a water passing groove is arranged on the end cover, so that water enters the water inlet end of the first-stage pretreatment filter element through the water passing groove; the third connecting end cover 403 is an upper fixed end cover of the first and second stage pretreatment filter element, and is fixed with the filter element in a viscose manner, and meanwhile, a water producing hole is formed in the middle of the end cover and is used for discharging pretreated produced water to the water inlet end of the fine filter element; the fourth connecting end cover 404 is a central tube sealing end cover, and is used for realizing the sealing of a central tube cavity, and is a lower fixed end cover of the first-stage post-treatment filter element, and is provided with a limiting device and a water flow passage limiting and providing function, so that water flowing out of the third connecting end cover 403 can enter the water inlet side of the fine filter element; the fifth connecting end cover 405 is a connecting and fixing end cover between the first post-treatment filter element and the second post-treatment filter element, and is provided with water holes so as to ensure that the produced water passing through the first post-treatment filter element can flow into the second post-treatment filter element.
Preferably, the method comprises the steps of,
The water inlet 701 is provided with a first sealing member 301; and/or, a second sealing member 302 is further disposed between the third connecting end cap 403 and the inner wall of the bottle 604; and/or a third seal 303 is provided between the outer peripheral wall of the central tube 602 and the inner peripheral wall of the fourth connection end cap 404; and/or a fourth seal 304 is disposed between the top end of the first stage aftertreatment filter element 204 and the inner wall of the base pipe 602; and/or the upper part of the fine filter element 203 and the inner wall of the bottle 604 are provided with a fifth sealing member 305; and/or, a second post-treatment bottle body 603 is further arranged between the second stage post-treatment filter element 205 and the central tube 602, and a sixth sealing piece 306 is further arranged on the outer wall of the upper end of the second post-treatment bottle body 603; and/or a seventh seal 307 is further provided between the center pipe 602 and the pure water outlet 703 of the bottle 604.
The water at the water inlet can be partially sealed through the first sealing piece, so that the water flow is reduced; the second sealing piece seals the top ends of the first and second stage pretreatment filter elements, so that water can only flow out of the first and second stage pretreatment filter elements and then fully prefilter.
In order to successfully manufacture the composite filter element, it is necessary to include a seal member portion. The first sealing piece 301 is a one-way check valve, and is used for preventing water in the filter flask body from flowing out when the filter element is replaced, so that experience is improved; the second seal 302 is an O-ring that mates with the end cap to seal; the third sealing element 303 is an O-shaped ring, and is matched with the central tube and the end cover to realize sealing; the fourth sealing element 304 is an O-shaped ring, and is matched with the end cover to realize sealing with the central tube; the fifth sealing piece 305 is a brine sealing ring, is stuck to the fine filter element through an adhesive tape, and is sealed with the composite filter element bottle body to realize separation of concentrated water and inflow water; the sixth sealing piece 306 is an O-shaped ring, and is matched with the bottle body of the second post-treatment filter element to realize sealing with the central tube, so that the produced water of the first-stage post-treatment filter element is prevented from directly flowing out when not treated; the seventh seal 307 is an O-ring, which cooperates with the central tube outlet to seal against the ingress of concentrate into the concentrate side.
Preferably, the method comprises the steps of,
A first cavity 501 is provided between the first connection end cap 401 and the second connection end cap 402; and/or, a second cavity 502 is formed between the second connection end cap 402 and the second seal member 302; and/or the interior of the second stage pretreatment cartridge 202 has a third cavity 503 extending vertically upward; and/or a fourth cavity 504 is provided between the second seal 302 and the fifth seal 305; and/or the gap between the bottom end of the center tube 602 and the fourth connection end cap 404 is a sixth cavity 506; and/or, an eighth cavity 508 is formed between the top end of the second stage aftertreatment cartridge 205 and the base pipe 602.
The first cavity is realized through the first connecting end cover and the second connecting end cover so as to realize the water containing and entering function in an inlet area, the second cavity is a section of cavity for enabling water to enter the first-stage pretreatment filter element, the third cavity is a section of cavity for enabling water to enter the fine-stage pretreatment filter element after passing through the first-stage pretreatment filter element and the second-stage pretreatment filter element, the fourth cavity is a section of cavity for enabling water to enter the fine-stage pretreatment filter element, the fifth cavity is a section of cavity for enabling water to enter the fine-stage filtration filter element after passing through the fine-stage filtration filter element, the sixth cavity is a section of cavity for enabling water flow from a guide groove of the central tube to enter the fifth cavity through the bottom end of the central tube, the cavity function is important, the filtering and growing length of the water flow can be effectively ensured, the filtering effect is improved, the seventh cavity is a containing cavity for enabling water to pass through the first-stage aftertreatment filter element after passing through the first-stage aftertreatment filter element, the eighth cavity is a containing cavity for enabling water to pass through the second-stage aftertreatment filter element, and the ninth cavity is a cavity between the water coming out of the fine-stage filtration filter element and the inner wall of the bottle body; through the cavities, water flows sequentially to each filter element, so that a step-by-step multistage filtering effect is realized, and efficient and refined filtering is realized.
The invention also provides a water purification system comprising the composite filter element assembly according to any one of the preceding claims. According to the invention, more than five stages of filter elements are arranged in the bottle body, fluid sequentially passes through the first stage pretreatment filter element, the second stage pretreatment filter element, the fine filtration filter element, the first stage post-treatment filter element and the second stage post-treatment filter element along the flowing direction of the fluid to be filtered, and the integrated composite filter element comprises five stages of filter elements which can be independently used on a water purifier to exert a purifying function, compared with the existing single-stage filter elements or two-stage, three-stage and even four-stage filter elements, the five-stage filter effect can be realized in one bottle body, the filter effect can be effectively improved, meanwhile, the filter element assembly and even the water purifier are miniaturized in volume, the filter element integrates the five-stage filter function, the service lives of the filter elements are matched in design, and the volume is considered, so that the integrated composite filter element has a large volume and only smaller volume than that when the filter element is independently used;
and set up the filter core in through a bottle, it is integrative to effectively collect five-stage filtration function, the life-span of each filter core has been matchd in the design, compare in the life-span between the bottle of single-stage filter core or second grade, tertiary even four-stage filter core has the mismatching and leads to the inconsistent problem of core replacement cycle, bring the frequent problem of core replacement, the life of the inside filter core of bottle is unanimous basically when changing inside filter core, therefore the core replacement cycle is unanimous, the integrative core replacement, the frequent problem of core replacement that the core replacement cycle that exists when effectively avoiding each filter core to use alone brings.
Preferably, including intake pipe, pure water pipeline and waste water pipeline, works as when compound filter core subassembly includes water inlet, dense water export and pure water export simultaneously, intake pipe with the water inlet links to each other pure water pipeline with pure water export links to each other, waste water pipeline with dense water export links to each other, just intake pipe is provided with pump 802 and water intaking valve 801, waste water pipeline is provided with waste water valve 807, be provided with pure water valve 804 on the pure water pipeline. In order to make this composite filter element function, the waterway system is shown in fig. 5. When in a water making state, the water path direction is as follows: the water gap, the water inlet valve 801, the water inlet valve 802, the pump, the composite filter element 10, the water outlet valve 804, the tap switch 805, the gooseneck tap 806 and the water intake; in the flushing state, the waterway direction is as follows: water inlet-water inlet valve 801-pump 802-composite filter cartridge 10-waste water valve 807.
The composite filter element structure comprises an upper structure, a lower structure and an inner structure and an outer structure. The upper structure and the lower structure are realized by separating the end covers, but the upper space and the lower space are communicated spaces, the communicated mode is that the end covers are provided with openings, and the end covers are the end covers of the pretreatment filter element at the same time, so that the space is saved; the inner and outer structure of the filter element filter material is characterized in that the realization foundation of the inner and outer structure is a central tube, and the central tube is different from the traditional central tube, has large cavity characteristics and can be used for filling the filter element filter material for the post-treatment. The two ends of the water gap are distributed at one end of the water inlet, one end of the concentrated water outlet and one end of the pure water outlet respectively, and the number of the interfaces is small; the system principle is water source-pump-pretreatment-fine filtration filter element-post-treatment filter element, and the composite filter element can be suitable for a table-type water purifier.
In order to successfully prepare the composite filter element, the invention can be realized by the following technical scheme, and the specific implementation modes are as follows:
1) For successful preparation of the composite filter element, the water path direction is shown in fig. 1.
2) In order to successfully manufacture the composite filter element, it is necessary to include multiple stages of filter elements.
A first stage pretreatment cartridge 201, a second stage pretreatment cartridge 202, a fine filtration cartridge 203, a first stage post-treatment cartridge 204, and a second stage post-treatment cartridge 205. The first-stage pretreatment filter element can be spray-melt PP cotton or paper folding PP cotton, and has the main functions of performing first-stage filtration and removing pollutants such as large suspended matters, sediment, rust and the like in the water body; the second-stage pretreatment filter element can be a sintered carbon rod, and has the main functions of adsorbing and removing residual chlorine, micromolecular organic matters and the like in the water body; the fine filter element can be a coiled reverse osmosis filter element or a coiled nanofiltration filter element, has the function of fine filtration, can remove heavy metal ions, micromolecular organic matters and the like in water body, and realizes the deep purification of the water body; the first stage post-treatment filter element can be a sintered carbon rod, and the function of the first stage post-treatment filter element is to improve the water production taste of the fine filter element; the second stage post-treatment filter element can be a micro-filtration membrane, an ultrafiltration membrane and the like, and has the function of preventing the out-of-water microorganism from exceeding the standard and ensuring the sanitation and safety of water. Correspondingly, in order to successfully prepare the composite filter element, the layout form of the filter element structure is as follows: the first-stage pretreatment filter element 201 wraps or is nested on the outer surface of the filter element of the second-stage pretreatment filter element 202 to form an internal-external structural layout; the rear three-stage filter element and the front two-stage pretreatment filter element are in an up-down structural layout; the two-stage post-treatment filter element is filled in the fine filter element central tube.
3) In order to successfully manufacture the composite filter element, it is necessary to include a seal member portion.
The first sealing piece 301 is a one-way check valve, and is used for preventing water in the filter flask body from flowing out when the filter element is replaced, so that experience is improved; the second seal 302 is an O-ring that mates with the end cap to seal; the third sealing element 303 is an O-shaped ring, and is matched with the central tube and the end cover to realize sealing; the fourth sealing element 304 is an O-shaped ring, and is matched with the end cover to realize sealing with the central tube; the fifth sealing piece 305 is a brine sealing ring, is stuck to the fine filter element through an adhesive tape, and is sealed with the composite filter element bottle body to realize separation of concentrated water and inflow water; the sixth sealing piece 306 is an O-shaped ring, and is matched with the bottle body of the second post-treatment filter element to realize sealing with the central tube, so that the produced water of the first-stage post-treatment filter element is prevented from directly flowing out when not treated; the seventh seal 307 is an O-ring, which cooperates with the central tube outlet to seal against the ingress of concentrate into the concentrate side.
4) In order to successfully manufacture the composite filter element, it is necessary to include an end cap portion.
The first connecting end cover 401 is a composite filter element bottle body end cover, can be in sealing connection with the composite filter element bottle body through spin melting and threads, and is provided with a limiting device for pressing the filter element during assembly so as to prevent water leakage caused by the fact that the filter element is not assembled in place; the second connecting end cover 402 is a lower fixed end cover of the first and second-stage pretreatment filter elements, and is fixed with the filter elements in a viscose manner, and a water passing groove is arranged on the end cover, so that water enters the water inlet end of the first-stage pretreatment filter element through the water passing groove; the third connecting end cover 403 is an upper fixed end cover of the first and second stage pretreatment filter element, and is fixed with the filter element in a viscose manner, and meanwhile, a water producing hole is formed in the middle of the end cover and is used for discharging pretreated produced water to the water inlet end of the fine filter element; the fourth connecting end cover 404 is a central tube sealing end cover, and is used for realizing the sealing of a central tube cavity, and is a lower fixed end cover of the first-stage post-treatment filter element, and is provided with a limiting device and a water flow passage limiting and providing function, so that water flowing out of the third connecting end cover 403 can enter the water inlet side of the fine filter element; the fifth connecting end cover 405 is a connecting and fixing end cover between the first post-treatment filter element and the second post-treatment filter element, and is provided with water holes so as to ensure that the produced water passing through the first post-treatment filter element can flow into the second post-treatment filter element.
5) In order to successfully manufacture the composite filter element, it is necessary to include additional features.
The limiting device on the inner wall of the central tube is used for limiting when the second-stage post-treatment filter element is assembled, and meanwhile, the water producing section of the second-stage post-treatment filter element is prevented from being stuck to the wall surface of the central tube, and the water outflow speed is ensured; unlike the traditional central tube, the central tube 602 has no through water diversion hole, the surface is provided with a water diversion groove, the section is provided with a water outflow groove, and the cavity is in a non-closed form; a second post-treatment bottle 603; bottle 604 of composite filter element.
6) The overall appearance of the composite filter element is shown in fig. 4. The upper side and the lower side of the bottle body water gap are respectively provided with a raw water inlet 701 at the lower end; the upper end is a concentrated water outlet 702 and a pure water outlet 703; in addition, the bottle body is provided with a handle 704, so that the bottle body is convenient to take when the core is replaced. It is contemplated that the bottle body is only a structure matched with the composite filter element assembly, can realize water inlet and outlet functions and replacement functions, and is not limited to the appearance provided by the drawings.
The composite filter element can replace the traditional multi-stage filter element, and the water purifying equipment can be prepared by using a single composite filter element.
The filter element of the invention has an up-down and inner-outer structure and an up-down and inner-outer structure of the component which are matched to realize the integrated composite filter element.
7) In order to make this composite filter element function, the waterway system is shown in fig. 5.
When in a water making state, the water path direction is as follows: the water gap, the water inlet valve 801, the water inlet valve 802, the pump, the composite filter element 10, the water outlet valve 804, the tap switch 805, the gooseneck tap 806 and the water intake;
In the flushing state, the waterway direction is as follows: water inlet-water inlet valve 801-pump 802-composite filter cartridge 10-waste water valve 807.
It is contemplated that the composite cartridge may be used in a variety of waterway system situations, the present invention exemplifies the most conventional one.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (14)
1. A composite filter element assembly, characterized in that: comprising the following steps:
The filter comprises a bottle body (604) and more than five stages of filter elements arranged in the bottle body (604), wherein the filter elements comprise a first stage pretreatment filter element (201), a second stage pretreatment filter element (202), a fine filter element (203), a first stage post-treatment filter element (204) and a second stage post-treatment filter element (205); fluid is filtered by passing through the first stage pretreatment filter element (201), the second stage pretreatment filter element (202), the fine filtration filter element (203), the first stage post-treatment filter element (204) and the second stage post-treatment filter element (205) in this order along the flow direction of the fluid;
The fine filter element (203) is positioned above the first-stage pretreatment element (201) or the second-stage pretreatment element (202), the first-stage post-treatment element (204) and the second-stage post-treatment element (205) are sleeved in the fine filter element (203), and the second-stage post-treatment element (205) is positioned above the first-stage post-treatment element (204);
The layout form of the filter element structure is as follows: the first-stage pretreatment filter element (201) is wrapped or nested on the outer surface of the filter element of the second-stage pretreatment filter element (202) to form an internal-external structural layout; the rear three-stage filter element and the front two-stage pretreatment filter element are in an up-down structural layout; the first-stage post-treatment filter element (204) and the second-stage post-treatment filter element (205) are filled in the filter element central tube of the fine filter element (203).
2. A composite filter element assembly according to claim 1, wherein:
The first-stage pretreatment filter element (201) is made of PP cotton; and/or, the second stage pretreatment cartridge (202) is a sintered carbon rod; and/or the fine filter element (203) is a roll-type reverse osmosis filter element or a roll-type nanofiltration filter element; and/or, the first stage post-treatment cartridge (204) is a sintered carbon rod; and/or the material of the second stage post-treatment filter element (205) is a microfiltration membrane and/or an ultrafiltration membrane.
3. A composite filter element assembly according to claim 1, wherein:
The first-stage pretreatment filter element (201) and the second-stage pretreatment filter element (202) are located at the same height and are arranged inside and outside, and the first-stage pretreatment filter element (201) is sleeved outside the second-stage pretreatment filter element (202).
4. A composite filter element assembly according to claim 1, wherein:
the fine filter element (203) is arranged inside the fine filter element (203) and outside the first-stage post-treatment filter element (204) and the second-stage post-treatment filter element (205), a central tube (602) is further arranged, a first guide groove (A) is formed in the outer wall surface of the central tube (602), and fluid is led to permeate into the first guide groove (A) through the fine filter element (203).
5. A composite filter element assembly according to claim 4, wherein:
The inside of the center tube (602) is provided with a fifth cavity (505), the first-stage aftertreatment filter element (204) and the second-stage aftertreatment filter element (205) are arranged in the fifth cavity (505), the first guide groove (A) extends linearly or curvedly along the axis direction of the center tube (602), and the first guide groove (A) is not communicated with the fifth cavity (505).
6. A composite filter element assembly according to claim 5, wherein:
The lower end of the first guide groove (A) is also communicated with a second guide groove (B), the second guide groove (B) is arranged between the inner wall and the outer wall of the central tube (602), and the other end of the second guide groove (B) is communicated with the lower end of the central tube (602) so as to be communicated with the fifth cavity (505).
7. A composite filter element assembly according to claim 5, wherein:
the first stage aftertreatment filter element (204) has a seventh cavity (507) inside, and fluid in the fifth cavity (505) permeates through the first stage aftertreatment filter element (204) into the seventh cavity (507).
8. A composite filter element assembly according to claim 7, wherein:
The seventh cavity (507) in the first stage aftertreatment filter element (204) is upwards communicated with the second stage aftertreatment filter element (205), a pure water outlet (703) is formed in the top end of the bottle body (604), and the upper end of the second stage aftertreatment filter element (205) is communicated with the pure water outlet (703).
9. A composite filter element assembly according to any one of claims 1-8, wherein:
The top end of the bottle body (604) is also provided with a concentrated water outlet (702), a ninth cavity (509) is formed between the upper end of the fine filter element (203) and the bottle body (604), and the concentrated water outlet (702) is communicated with the ninth cavity (509).
10. A composite filter element assembly according to any one of claims 1-8, wherein:
The bottom end of the bottle body (604) is provided with a first connecting end cover (401) so as to seal the lower end of the bottle body (604), and the first connecting end cover (401) is provided with a water inlet (701); and/or, the bottom ends of the first-stage pretreatment filter element (201) and the second-stage pretreatment filter element (202) are further provided with a second connecting end cover (402), the second connecting end cover (402) is fixedly arranged on the bottle body (604) and/or the first connecting end cover (401), and the outer wall of the second connecting end cover (402) is provided with a wattle and forms a space allowing fluid to flow through with the inner wall of the bottle body (604); and/or, the top ends of the first-stage pretreatment filter element (201) and the second-stage pretreatment filter element (202) are also provided with a third connecting end cover (403);
When further comprising a central tube (602):
And/or, a fourth connecting end cover (404) is further arranged at the bottom end position of the central tube (602), and a gap is formed between the bottom end of the central tube (602) and the fourth connecting end cover (404); and/or, a fifth connecting end cover (405) is further arranged between the first-stage aftertreatment filter element (204) and the second-stage aftertreatment filter element (205), and a channel allowing fluid to circulate is arranged in the middle of the fifth connecting end cover (405).
11. A composite filter element assembly according to claim 10, wherein:
The water inlet (701) is provided with a first sealing element (301); and/or, a second sealing piece (302) is further arranged between the third connecting end cover (403) and the inner wall of the bottle body (604); and/or a third seal (303) is arranged between the outer peripheral wall of the central tube (602) and the inner peripheral wall of the fourth connecting end cap (404); and/or a fourth seal (304) is provided between the top end of the first stage aftertreatment cartridge (204) and the inner wall of the base pipe (602); and/or a fifth sealing piece (305) is arranged on the upper part of the fine filter element (203) and the inner wall of the bottle body (604); and/or, a second post-treatment bottle body (603) is further arranged between the second-stage post-treatment filter element (205) and the central tube (602), and a sixth sealing piece (306) is further arranged on the outer wall of the upper end of the second post-treatment bottle body (603); and/or a seventh sealing member (307) is arranged between the central tube (602) and the pure water outlet (703) of the bottle body (604).
12. A composite filter element assembly according to claim 11, wherein:
A first cavity (501) is formed between the first connecting end cover (401) and the second connecting end cover (402); and/or forming a second cavity (502) between the second connection end cap (402) and the second seal (302); and/or the second stage pretreatment cartridge (202) has a third cavity (503) extending vertically upward inside; and/or, a fourth cavity (504) is provided between the second seal (302) and the fifth seal (305); and/or the gap between the bottom end of the central tube (602) and the fourth connection end cap (404) is a sixth cavity (506); and/or, an eighth cavity (508) is formed between the top end of the second stage aftertreatment filter element (205) and the base pipe (602).
13. A water purification system, characterized by: a composite filter element assembly comprising any one of claims 1-12.
14. The water purification system of claim 13, wherein: including intake pipe, pure water pipeline and waste water pipeline, works as when compound filter core subassembly includes water inlet, dense water export and pure water export simultaneously, intake pipe with the water inlet links to each other pure water pipeline with pure water export links to each other waste water pipeline with dense water export links to each other, just be provided with pump (802) and water intaking valve (801) on the intake pipe, be provided with waste water valve (807) on the waste water pipeline, be provided with pure water valve (804) on the pure water pipeline.
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