CN112774271A - Two sections water filter core - Google Patents

Two sections water filter core Download PDF

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Publication number
CN112774271A
CN112774271A CN202110287131.2A CN202110287131A CN112774271A CN 112774271 A CN112774271 A CN 112774271A CN 202110287131 A CN202110287131 A CN 202110287131A CN 112774271 A CN112774271 A CN 112774271A
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CN
China
Prior art keywords
section
filter
filter element
filtering
pleat
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202110287131.2A
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Chinese (zh)
Inventor
徐承彬
罗刚
袁初
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United Filtration Technology Wuhan Co ltd
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United Filtration Technology Wuhan Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Filtration Technology Wuhan Co ltd filed Critical United Filtration Technology Wuhan Co ltd
Priority to CN202110287131.2A priority Critical patent/CN112774271A/en
Publication of CN112774271A publication Critical patent/CN112774271A/en
Pending legal-status Critical Current

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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
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • 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
    • B01D29/01—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 flat filtering elements
    • B01D29/016—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 flat filtering elements with corrugated, folded or wound filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B01D29/213—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B01D29/232—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets
    • B01D29/235—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets having a concertina shape
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/04—Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/08—Apparatus therefor

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Nanotechnology (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention discloses a double-section water filtering element, which is formed by connecting two sections of filtering elements with different filtering precisions and comprises a water inlet end cover, a first section of obliquely-folded filtering material and a first section of filtering element sleeve, wherein the double-section filtering element is connected with the end cover, a second section of obliquely-folded filtering material and a second section of filtering element sleeve, and a water outlet end cover is sequentially connected; the water inlet end cover, the first section of inclined pleat filter material and the first section of filter element sleeve form a first section of filter element with lower precision, and the second section of inclined pleat filter material, the second section of filter element sleeve and the water outlet end cover form a second section of filter element with higher precision. The first section of the oblique-fold filter material and the second section of the oblique-fold filter material are both formed through a pleating process and are composed of multiple layers of oblique-fold folded filter materials. The integrated double-section filter element is novel in structural design, and skillfully provided, so that the two precision filter elements can be integrated in the same volume, the integrated double-section filter element is applied to more fields, and the performance and the filtering capacity of the filter element are effectively improved.

Description

Two sections water filter core
Technical Field
The invention relates to the technical field of water filtering equipment, in particular to a double-section water filtering filter element.
Background
The water filtration is widely applied to the industries of petrochemical industry, coal chemical industry, medicine, food, electronics and the like, and mainly removes impurities and unnecessary components in materials through filtration, so that the materials containing the impurities are clean again and are reused in life and production. In water filtration treatment systems, reverse osmosis filtration is essential. Reverse osmosis membranes have high requirements on the quality of inlet water, particularly the content and the size of particle impurities, and therefore, in order to ensure the reverse osmosis filtering effect and the service life of the reverse osmosis membranes in practical application, security filters need to be arranged before reverse osmosis. The security filter is used for removing large-particle impurities in the wastewater in advance, and the particle size of the impurities in the wastewater treated by the security filter is less than or equal to 10 mu m, so that the normal use of the subsequent reverse osmosis membrane can be ensured.
The cartridge filter adopts a high-flux filter element, the filtering precision is usually 5 mu m, the cartridge filter belongs to an easily-consumed product, and the replacement period of the cartridge filter element is 5-15 days as short as 2-3 months as long as the water quality of the incoming water is different. Particularly, coal chemical industry and chemical industry enterprises in northwest regions have poor water quality and lack of local water resources, so that the quality of produced wastewater is generally poor, the replacement period of the filter elements of the security filters of the enterprises is short, generally about 7 days, and the replaced waste filter elements can only be used for solid waste treatment. Therefore, the operating cost pressure of the security filter is very high for enterprises with large wastewater treatment capacity (tens of thousands of parties/day).
At present, most of cartridge filter elements are straight-pleat single-stage filter elements, namely, the filter elements only have one-stage filter materials, and the filter materials are formed by folding straight pleats. The straight-pleat single-stage filter element has the advantages of fixed flow area and single filtering precision, is only suitable for the condition of stable quality of incoming water, and particularly can block membranes quickly when the quality of the incoming water is poor and the particle size of impurities is increased, so that the replacement period of the filter element is shortened greatly.
Theoretically, the pleat length L of the straight-pleat folded filter material can be increased by increasing the difference between the inner diameter and the outer diameter of the filter element, so as to increase the filtering area and the filtering performance of the filter element, and if the outer diameter of the existing filter element with the inner diameter of 80mm/160mm is increased to 185mm, the flow of fluid is increased, and the filtering performance is improved, and fig. 1 is a structural schematic diagram of a straight-pleat filter element commonly used in the market at present. Its disadvantages are:
however, due to the limitation of the straight pleat folding method, the increase of the outer diameter of the filter element may not achieve satisfactory effect, mainly because of the following reasons: when the outer diameter is increased, the straight pleat L is increased, when the filter element structure is manufactured, the alpha angle is also increased, the gap between the pleat and the pleat is increased, the straight pleat folding filter material can be looser in the inner and outer cylinders, the filter material strength is lower, the instability of fluid can be caused by water flow impact, the stress of the filter element is uneven, the local folding filter material or the filter element can be pressed and deformed, thereby the filtering performance is lost, the limitation of the straight pleat type mode is received, the inner diameter and the outer diameter of the filter element in the market are basically 80mm/160mm, the filtering area is basically about 5 square meters per filter, the area limitation is received, and the performance of the filter element can be limited.
As shown in figure 1, for traditional straight pleat filter core appearance structure, cross section and rivers direction, the filter core is when using, and sewage passes through the filter core from A direction, and the solid particle pollutant is intercepted to the filter core, and the sewage after the filtration flows out by B direction, has reached the filterable effect of sewage. The traditional filter element generally has the filter area with the pleat height of 25mm and the pleat number of 100, the filter area is about 5 square meters, and the filter precision can only be one precision, generally 5 micrometers.
Patent CN207187243U provides a slant fold water filter element, which changes the straight fold filter form into slant fold filter form, and increases the filter area and performance of the filter element. The utility model discloses a shortcoming of structure is: the single-stage inclined pleat filter element has single filtering precision and limited filtering circulation area, and can still not meet the requirements of the prior security filter on the water filtering filter element.
Disclosure of Invention
The invention aims to provide a double-section water filtering filter element, which can achieve larger filtering area under the same volume state through an integrated double-section structure filter element with any section length, and can also adjust the length and precision of two sections according to water quality, thereby improving the performance and filtering capacity of the filter element, and being beneficial to prolonging the replacement period and service life of the filter element.
In order to achieve the purpose, the invention provides the following technical scheme:
a double-section water filtering element is formed by connecting two sections of filtering elements with different filtering precisions and comprises a water inlet end cover, a first section of obliquely-folded filtering material and a first section of filtering element sleeve, wherein the double-section filtering element is connected with the end cover, a second section of obliquely-folded filtering material, a second section of filtering element sleeve and a water outlet end cover; the water inlet end cover, the first section of inclined pleat filter material and the first section of filter element sleeve form a first section of filter element with lower precision, and the second section of inclined pleat filter material, the second section of filter element sleeve and the water outlet end cover form a second section of filter element with higher precision.
The first section of the oblique-fold filter material and the second section of the oblique-fold filter material are both formed through a pleating process and are composed of multiple layers of oblique-fold folded filter materials.
Furthermore, the filtering precision of the first section of filter element is 20um, the first section of the oblique-pleat filter material is wrapped on the periphery of the first section of the filter element sleeve, the pleat height of the oblique-pleat filter material is 36mm, the pleat number is 110 pleats, and the filter material has four layers; the length of the first section of filter element is adjusted according to different water qualities, and the first section of filter element is used for pre-filtering the whole filter element and is used for mainly intercepting pollutants.
The filtering precision of the second section of filter element is 5 mu m, the second section of slanting pleat filter material is wrapped on the periphery of the second section of filter element sleeve, the height of the slanting pleat filter material is 36mm, the number of pleats is 110 pleats, and the filter material is four layers; the length of the second section of filter element can be adjusted according to different water qualities and is used for fine filtration of the whole filter element, and the second section of filter element is used for fine treatment to intercept fine particles which cannot be intercepted in one section, so that the quality of the effluent water is ensured.
Preferably, the surface of the double-section filter element connecting end cover is uniformly distributed with circular water flow through holes for water flow to pass through.
And filter sealing plates are arranged on the outer sides of the first section of filter element and the second section of filter element, and the outer diameter of the double-section filter element connecting end cover is consistent with the inner diameter of the filter sealing plate, so that the sealing state of the joint is kept.
When the double-section filter element is used, water flows through the first section of filter element, passes through the first section of obliquely-folded filter material in an internal pressure mode, passes through a flow passage formed by the filter sealing plate and the first section of filter element, passes through the water flow through hole of the end cover of the double-section filter element, and is filtered by the second section of filter element, and finally water is discharged.
The invention can increase the filtering area of the filter element by the double-section filter element with any section length, one double-section filter element is equivalent to two common straight-pleat filter elements under the same volume, and the length and the precision of the two sections can be adjusted according to the water quality, thereby improving the performance and the filtering capacity of the filter element.
Compared with the prior art, the invention has the beneficial effects that: structural design is novel, ingenious setting up the two section filter cores of integral type, can realize two kinds of precision filter cores with the body in the same volume, be applied to more fields, also make filter core life greatly increased, because the volume of two section filter cores is unanimous with the straight pleat filter core volume of tradition, only need change the filter just can perfectly replace the straight pleat filter core of tradition, do not increase the area of user's side.
Drawings
Fig. 1 is a schematic view of a conventional straight-pleated filter element.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a schematic view of the pleated filter of FIG. 2.
In the figure: 01. the filter comprises a first section of filter element, 02, a second section of filter element, 1, a water inlet end cover, 2, a first section of slanting pleat filter material, 3, a first section of filter element sleeve, 4, a double-section filter element connecting end cover, 5, a second section of filter element sleeve, 6, a water outlet end cover, 7, a second section of slanting pleat filter material, 8 and a filter sealing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2 and fig. 3, the present invention provides a technical solution:
a double-section water filter element is formed by connecting two sections of filter elements with different filter precisions, and comprises a water inlet end cover 1, a first section of slanting pleat filter material 2 and a first section of filter element sleeve 3, wherein the double-section filter element is connected with an end cover 4, a second section of slanting pleat filter material 7, a second section of filter element sleeve 5 and a water outlet end cover 6, and the double-section filter element end cover 4 is provided with a water flow through hole; the water inlet end cover 1, the first section of inclined pleat filter material 2 and the first section of filter element sleeve form a first section of filter element 01 with lower precision, and the second section of inclined pleat filter material 7, the second section of filter element sleeve 5 and the water outlet end cover 6 form a second section of filter element 02 with higher precision.
Circular water flow through holes are uniformly distributed on the surface of the double-section filter element connecting end cover 4 and are used for water flow to pass through.
The double-section filter element is formed by combining a first section filter element 01 and a second section filter element 02 as shown in figure 2, and the length and the volume of the double-section filter element are consistent with those of a common straight-pleat filter element.
The first section of filter element 01 is composed of a water inlet end cover 1, a first section of filter element sleeve 3 and a first section of filter element 2 which is formed by a diagonal pleat process, the length L1 of the first section of filter element 01 is adjusted according to different water qualities and is used for pre-filtering of the whole filter element, the general precision is 20 microns, the pleat height of the first section of filter element 2 is 36mm, the pleat number is 110 pleats, four layers of filter elements are arranged, and the filter area is 36/1000x110x2xL 1. under the general condition, the first section is used for mainly intercepting pollutants, the L1 is more than 0.6m, if the L1 is 0.6m, the filter area of the first section of filter element 01 is about 5 square meters, the filter area of the common straight pleat filter element is consistent with the filter area of the common straight pleat filter element, the common straight pleat filter element has the function of the common straight pleat filter element, the precision can only be selected by 5 microns in order to ensure the water quality, so the pollutant receiving capacity and the flux are, the dirt holding capacity and the service life of the filter element are all longer than those of the common straight-pleat filter element.
The second section of filter element 02 is formed by connecting a water outlet end cover 6, a second section of filter element with inclined folds 7 and a second section of filter element sleeve 5, the second section of filter element with inclined folds 7 is also formed by an inclined folds process, the length L2 of the second section of filter element 02 is adjusted according to different water qualities and is used for fine filtration of the whole filter element, the general precision is selected to be 5 microns, the fold height of the second section of filter element with inclined folds 7 mm, the fold number is 110 folds, the filter elements are four layers, the filter area is 36/1000x110x2xL2, under the general condition, the second section is used for fine treatment, and can intercept fine particles which can not be intercepted at the first section, so as to ensure the water quality of the discharged water, the L2 is less than 0.4m, if the L1 is 0.4m, the filtering area of the second section of the filter element 02 is about 3 square meters, although smaller than the filter area of a conventional straight pleated filter cartridge, the second stage cartridge 02 is simply treated as a final polishing because the first stage cartridge 01 has already intercepted most of the contaminants, and will also have a longer service life than a conventional straight pleated filter cartridge. Synthesize and get off, whole two sections filter core segmentation interception pollutants, whole filter area is more than 1.5 times of ordinary straight pleat filter core, has possessed the function of ordinary filter core, has improved more than 1.5 times the filter core life-span moreover, has promoted the performance of whole filter core greatly.
Because the volume length of two sections filter cores is unanimous basically with ordinary straight pleat filter core, a two sections filter core connection end cover 4 has only been enlarged, two sections filter core connection end cover 4 not only has the effect of connecting two sections filter cores, still as the effect of rivers flow direction, its external diameter just unanimous with filter closing plate 8, rivers enter first section filter core 01 through one section A, with interior pressure's mode through first section twill filter media 2 filter stay to B, pass through filter closing plate 8 and the runner that first section filter core 01 formed and pass the flowing water through-hole that two sections filter core connection end cover 4 and reach C, pass through second section filter core 02 and reach D, final play water.
According to the invention, the filtering area of the filter element can be increased by the double-section filter element with any section length, and the length L1 of the first section filter element 01 and the length L2 of the first section filter element 02 can be adjusted at will according to different water qualities, so that the filter element is flexible and changeable.
Under the same volume, one double-section filter element is equivalent to two common straight-pleat filter elements, and the length and the precision of the two sections can be adjusted at will according to the water quality, so that the performance and the filtering capacity of the filter element are improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A double-section water filtering element is characterized by being formed by connecting two sections of filtering elements with different filtering precisions and comprising a water inlet end cover, a first section of obliquely-folded filtering material and a first section of filtering element sleeve, wherein the double-section filtering element is connected with the end cover, a second section of obliquely-folded filtering material, a second section of filtering element sleeve and a water outlet end cover; the water inlet end cover, the first section of inclined pleat filter material and the first section of filter element sleeve form a first section of filter element with lower precision, and the second section of inclined pleat filter material, the second section of filter element sleeve and the water outlet end cover form a second section of filter element with higher precision.
2. A two-stage water filtration cartridge according to claim 1 wherein: the first section of the oblique-fold filter material and the second section of the oblique-fold filter material are both formed through a pleating process and are composed of multiple layers of oblique-fold folded filter materials.
3. A two-stage water filtration cartridge according to claim 1 wherein: the filter fineness of first section filter core is 20um, first section oblique pleat filter media parcel is peripheral at first section filter core sleeve, and oblique pleat filter media pleat height 36mm, the 110 pleats of pleat number, filter media four layers.
4. The dual stage water filter cartridge of claim 1 wherein the second stage cartridge has a filtration capacity of 5um, and said second stage of pleated filter media is wrapped around the second stage cartridge sleeve with a pleat height of 36mm and a pleat count of 110 pleats, with four layers of filter media.
5. A two-stage water filtration cartridge according to claim 1 or 2 wherein: circular water flow through holes are uniformly distributed on the surface of the double-section filter element connecting end cover.
6. The dual stage water filter cartridge of claim 1 wherein a filter seal plate is disposed on the outside of the first and second stages of filter elements, and the outer diameter of the dual stage filter element connection end cap is identical to the inner diameter of the filter seal plate.
CN202110287131.2A 2021-03-17 2021-03-17 Two sections water filter core Pending CN112774271A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202110287131.2A CN112774271A (en) 2021-03-17 2021-03-17 Two sections water filter core

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Publication Number Publication Date
CN112774271A true CN112774271A (en) 2021-05-11

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205569871U (en) * 2016-03-21 2016-09-14 西安天厚滤清技术有限责任公司 Range upon range of formula multiple stages of filtering core
CN106422472A (en) * 2016-11-22 2017-02-22 镇江市和云工业废水处置有限公司 Efficient curve-type water purifying device
CN207187243U (en) * 2017-08-24 2018-04-06 联合滤洁流体过滤与分离技术（北京）有限公司 A kind of water filtration filter element
CN108211466A (en) * 2018-03-06 2018-06-29 陈凯旋 Stainless steel layer stacked candle filter core
CN208893746U (en) * 2018-10-12 2019-05-24 杨莎莎 Oil field gathering and transportation sewage-treatment plant
CN111185096A (en) * 2019-08-02 2020-05-22 珠海格力电器股份有限公司 Compound filter element group spare and water purification system
CN215137234U (en) * 2021-03-17 2021-12-14 联合滤洁过滤技术(武汉)有限公司 Two sections water filter core

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205569871U (en) * 2016-03-21 2016-09-14 西安天厚滤清技术有限责任公司 Range upon range of formula multiple stages of filtering core
CN106422472A (en) * 2016-11-22 2017-02-22 镇江市和云工业废水处置有限公司 Efficient curve-type water purifying device
CN207187243U (en) * 2017-08-24 2018-04-06 联合滤洁流体过滤与分离技术（北京）有限公司 A kind of water filtration filter element
CN108211466A (en) * 2018-03-06 2018-06-29 陈凯旋 Stainless steel layer stacked candle filter core
CN208893746U (en) * 2018-10-12 2019-05-24 杨莎莎 Oil field gathering and transportation sewage-treatment plant
CN111185096A (en) * 2019-08-02 2020-05-22 珠海格力电器股份有限公司 Compound filter element group spare and water purification system
CN215137234U (en) * 2021-03-17 2021-12-14 联合滤洁过滤技术(武汉)有限公司 Two sections water filter core

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