CN113559710A - Reverse osmosis membrane element, filter element and water purifier - Google Patents
Reverse osmosis membrane element, filter element and water purifier Download PDFInfo
- Publication number
- CN113559710A CN113559710A CN202110065811.XA CN202110065811A CN113559710A CN 113559710 A CN113559710 A CN 113559710A CN 202110065811 A CN202110065811 A CN 202110065811A CN 113559710 A CN113559710 A CN 113559710A
- Authority
- CN
- China
- Prior art keywords
- pipe
- reverse osmosis
- osmosis membrane
- pure water
- positioning column
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 239000012528 membrane Substances 0.000 title claims abstract description 81
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 66
- 239000002351 wastewater Substances 0.000 claims abstract description 77
- 210000001503 joint Anatomy 0.000 claims abstract description 32
- 239000002699 waste material Substances 0.000 claims description 17
- 238000003032 molecular docking Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims 2
- 239000008367 deionised water Substances 0.000 description 15
- 229910021641 deionized water Inorganic materials 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/16—Rotary, reciprocated or vibrated modules
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a reverse osmosis membrane element, a filter element and a water purifier, wherein the reverse osmosis membrane element comprises a central tube group, a first end cover and a second end cover, the central tube group comprises a pure water pipe and a waste water pipe, and the central tube group is provided with a first end and a second end; the first end cover is arranged at the first end, the second end cover is arranged at the second end, and the first end cover is provided with a wastewater outlet and a pure water outlet; or the first end cover is provided with a wastewater outlet, and the second end cover is provided with a pure water outlet; the waste water pipe is communicated with the waste water outlet, and the pure water pipe is communicated with the pure water outlet; the first end cover is provided with a first butt joint structure matched with the first end in shape and size, and the first butt joint structure is connected with the first end in a matched manner; the second end cover is provided with a second butt joint structure matched with the second end in shape and size, and the second butt joint structure is connected with the second end in a matched mode. The technical scheme of the invention can prevent the first end cover and the second end cover from being reversely assembled.
Description
Case information
This application is based on a division of the chinese patent application No. 201611033620.0 entitled reverse osmosis membrane element, filter element and water purifier, filed on 2016, 11, 16, 2016, and is incorporated herein by reference in its entirety.
Technical Field
The invention relates to the technical field of water purification, in particular to a reverse osmosis membrane element, a filter element and a water purifier.
Background
The spiral roll type reverse osmosis membrane element comprises a central tube group, a reverse osmosis membrane group rolled on the central tube group, and a first end cover and a second end cover which are covered at two ends of the central tube group and the water-saving membrane group. The central pipe group comprises a pure water pipe and a waste water pipe, pure water and waste water flow in the pure water pipe and the waste water pipe along a set direction respectively, and the first end cover and the second end cover are used for positioning the central pipe group and the reverse osmosis membrane group. The structures of the two ends of the central tube group of the reverse osmosis membrane element are the same, and the positioning structures of the inner sides of the first end cover and the second end cover are similar, so that the first end cover and the second end cover are easy to install reversely. When the reverse osmosis membrane element is applied to the filter element, the first end cover or the second end cover is also required to be used as a switching part, the water channel of the central pipe group and the filter element cover is in butt joint, and the reverse assembly of the first end cover and the second end cover can cause the blockage of the water channel inside the reverse osmosis membrane element.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a reverse osmosis membrane element, aiming at preventing a first end cover and a second end cover from being reversely mounted.
In order to achieve the purpose, the reverse osmosis membrane element provided by the invention comprises a central pipe group, a first end cover and a second end cover, wherein the central pipe group comprises a pure water pipe and a waste water pipe arranged at an interval with the pure water pipe, and the central pipe group is provided with a first end and a second end in the length direction of the pure water pipe; the first end cover is arranged at the first end of the central pipe group, the second end cover is arranged at the second end of the central pipe group, and the first end cover is provided with a wastewater outlet and a pure water outlet; or the first end cover is provided with a wastewater outlet, and the second end cover is provided with a pure water outlet; the waste water pipe is communicated with the waste water outlet, and the pure water pipe is communicated with the pure water outlet; the first end of the central pipe group is different from the second end of the central pipe group in shape or/and size, the first end cover is provided with a first butt joint structure matched with the first end of the central pipe group in shape and size, and the first butt joint structure is matched and connected with the first end of the central pipe group; the second end cover is provided with a second butt joint structure matched with the second end of the central pipe group in shape and size, and the second butt joint structure is connected with the second end of the central pipe group in a matched mode.
Preferably, the orifice of the plain water pipe at the first end of the center pipe group is different from the orifice of the plain water pipe at the second end of the center pipe group in shape and/or size; the first butting structure comprises a first positioning column, and the shape and the size of the first positioning column are matched with the pipe orifice of the pure water pipe at the first end of the central pipe group; the second butt joint structure comprises a second positioning column, and the shape and the size of the second positioning column are matched with the pipe orifice of the pure water pipe, which is positioned at the second end of the central pipe group.
Preferably, the cross sections of the pipe orifices at the two ends of the deionized water pipe are both circular, the inner diameter of the pipe orifice of the deionized water pipe at the first end of the central pipe group is smaller than the inner diameter of the pipe orifice of the deionized water pipe at the second end of the central pipe group, and the cross section of the first positioning column is smaller than the cross section of the second positioning column.
Preferably, the pure water outlet is formed in the first end cover, a first through hole is formed in the first positioning column, and the first through hole extends along the axial direction of the first positioning column and is communicated with an internal channel of the pure water pipe and the pure water outlet on the first end cover; and/or the second end cover is provided with the pure water outlet, a second through hole is formed in the second positioning column, extends along the axial direction of the second positioning column, and is communicated with the inner channel of the pure water pipe and the pure water outlet on the second end cover.
Preferably, the pipe orifice of the waste at the first end of the central pipe set is of a different shape and/or size to the pipe orifice of the waste at the second end of the central pipe set; the first butting structure comprises a plurality of third positioning columns, and the shapes and the sizes of the third positioning columns are matched with pipe orifices of the waste water pipes at the first ends of the central pipe groups; the second butting structure comprises a plurality of fourth positioning columns, and the shapes and the sizes of the fourth positioning columns are matched with the pipe orifices of the waste water pipes at the second end of the central pipe group.
Preferably, the inner wall of the pipe orifice of the wastewater pipe located at the first end of the central pipe group is smooth, the peripheral wall of the third positioning column is correspondingly and smoothly arranged, a plurality of limiting protrusions are convexly arranged on the inner wall of the pipe orifice of the wastewater pipe located at the second end of the central pipe group, and limiting grooves for accommodating the limiting protrusions are formed in the peripheral wall of the fourth positioning column corresponding to the limiting protrusions.
Preferably, the first end cover is provided with the wastewater outlet, a third through hole is formed in the third positioning column, and the third through hole extends along the axial direction of the third positioning column and is communicated with an internal channel of the wastewater pipe and the wastewater outlet on the third end cover; and/or the second end cover is provided with the wastewater outlet, a fourth through hole is formed in the fourth positioning column, extends along the axial direction of the fourth positioning column, and is communicated with the internal channel of the wastewater pipe and the wastewater outlet on the fourth end cover.
Preferably, the ro membrane element further comprises a plurality of ro membrane groups, each of said ro membrane groups having a first portion located inside said central tube group and a second portion located outside said central tube group, each of said waste water tubes and said plain water tubes being separated by a first portion of one of said ro membrane groups; a second portion of the plurality of reverse osmosis membrane modules forming a multi-layer membrane module surrounding the central tube bank; the first end cover and the second end cover are respectively covered and sealed at two ends of the reverse osmosis membrane groups.
The invention also provides a filter element, which comprises a reverse osmosis membrane element, wherein the reverse osmosis membrane element comprises a central tube group, a first end cover and a second end cover, the central tube group comprises a pure water pipe and a waste water pipe arranged at an interval with the pure water pipe, and the central tube group is provided with a first end and a second end in the length direction of the pure water pipe; the first end cover is arranged at the first end of the central pipe group, the second end cover is arranged at the second end of the central pipe group, and the first end cover is provided with a wastewater outlet and a pure water outlet; or the first end cover is provided with a wastewater outlet, and the second end cover is provided with a pure water outlet; the waste water pipe is communicated with the waste water outlet, and the pure water pipe is communicated with the pure water outlet; the first end of the central pipe group is different from the second end of the central pipe group in shape or/and size, the first end cover is provided with a first butt joint structure matched with the first end of the central pipe group in shape and size, and the first butt joint structure is matched and connected with the first end of the central pipe group; the second end cover is provided with a second butt joint structure matched with the second end of the central pipe group in shape and size, and the second butt joint structure is connected with the second end of the central pipe group in a matched mode.
The invention also provides a water purifier, which comprises a filter element, wherein the filter element comprises a reverse osmosis membrane element, the reverse osmosis membrane element comprises a central tube group, a first end cover and a second end cover, the central tube group comprises a pure water tube and a waste water tube arranged at an interval with the pure water tube, and the central tube group is provided with a first end and a second end in the length direction of the pure water tube; the first end cover is arranged at the first end of the central pipe group, the second end cover is arranged at the second end of the central pipe group, and the first end cover is provided with a wastewater outlet and a pure water outlet; or the first end cover is provided with a wastewater outlet, and the second end cover is provided with a pure water outlet; the waste water pipe is communicated with the waste water outlet, and the pure water pipe is communicated with the pure water outlet; the first end of the central pipe group is different from the second end of the central pipe group in shape or/and size, the first end cover is provided with a first butt joint structure matched with the first end of the central pipe group in shape and size, and the first butt joint structure is matched and connected with the first end of the central pipe group; the second end cover is provided with a second butt joint structure matched with the second end of the central pipe group in shape and size, and the second butt joint structure is connected with the second end of the central pipe group in a matched mode.
The central pipe group of the reverse osmosis membrane element in the technical scheme of the invention comprises a pure water pipe and a waste water pipe; the two ends of the central pipe group are respectively clamped through the first end cover and the second end cover to be positioned, and the first end cover is provided with a pure water outlet and a waste water outlet to form a flow channel communicated with a pipeline corresponding to the central pipe group; meanwhile, the first end of the central pipe group and the second end of the central pipe group are different in shape or/and size, the first end cover is provided with a first butt joint structure matched with the first end of the central pipe group in shape and size, and the first butt joint structure is matched and connected with the first end of the central pipe group; the second end cover is provided with a second butt joint structure matched with the shape and the size of the second end of the central pipe group, and the second butt joint structure is matched and connected with the second end of the central pipe group; so, when first end cover and second end cover dress were in the opposite direction, first butt joint structure with the second end of central nest of tubes is unmatched, unable assembly, and second butt joint structure is unmatched with the first end of central nest of tubes, unable assembly to lead to first end cover and second end cover unable and central nest of tubes assembly, thereby prevent that first end cover and second end cover dress are in the opposite direction, and then guarantee that reverse osmosis membrane element inside water route is unobstructed.
Drawings
FIG. 1 is a schematic view of the construction of one embodiment of a reverse osmosis membrane element of the present invention;
FIG. 2 is a cross-sectional view of the reverse osmosis membrane element of FIG. 1 taken along line A-B-C;
FIG. 3 is P in FIG. 21An enlarged view of (a);
FIG. 4 is P in FIG. 22An enlarged view of (a);
FIG. 5 is a schematic diagram of the construction of the center tube bank of the reverse osmosis membrane element of FIG. 1;
FIG. 6 is a schematic diagram of the construction of a first end of the center tube set shown in FIG. 5;
FIG. 7 is a schematic illustration of the second end of the center tube set shown in FIG. 5;
FIG. 8 is a schematic view of a first end cap of the reverse osmosis membrane element of FIG. 1;
fig. 9 is a schematic structural view of a second end cap of the reverse osmosis membrane element of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
200 | |
| 300 | |
400 | Reverse |
| 110 | |
11a | |
| 11b | |
120 | |
| 121 | |
12a | |
| 12b | The |
201 | |
| 202 | |
210 | First butt |
| 211 | |
212 | |
| 218 | First through |
219 | Third through |
| 310 | Second butt |
311 | |
| 312 | |
313 | Limiting groove |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include that feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a reverse osmosis membrane element.
Referring to fig. 1 and 2, in the embodiment of the present invention, the ro membrane element includes a center tube group 100, a first end cap 200 and a second end cap 300, the center tube group 100 includes a plain water tube 110 and a waste water tube 120 spaced apart from the plain water tube 110, the center tube group 100 has a first end and a second end in a length direction of the plain water tube 110; the first end cover 200 is arranged at the first end of the central pipe group 100 in a covering manner, the second end cover 300 is arranged at the second end of the central pipe group 100 in a covering manner, and the first end cover 200 is provided with a pure water outlet 201 and a waste water outlet 202; alternatively, the first end cap 200 is provided with a waste water outlet 202, and the second end cap 300 is provided with a pure water outlet 201; the waste water pipe 120 is communicated with a waste water outlet 202, and the pure water pipe 110 is communicated with the pure water outlet 201; the first end of the center tube group 100 and the second end of the center tube group 100 have different shapes and/or sizes, the first end cap 200 is provided with a first abutting structure 210 matching with the first end of the center tube group 100 in shape and size, and the first abutting structure 210 is connected with the first end of the center tube group 100 in a matching manner; the second end cap 300 is provided with a second docking structure 310 matching the shape and size of the second end of the center tube set 100, and the second docking structure 310 is connected to the second end of the center tube set 100.
The central pipe group 100 of the reverse osmosis membrane element of the technical proposal of the invention comprises a pure water pipe 110 and a waste water pipe 120; the two ends of the central pipe group 100 are respectively clamped through the first end cover 200 and the second end cover 300 for positioning, and the pure water outlet 201 and the waste water outlet 202 are arranged on the first end cover 200 to form a flow passage communicated with the corresponding pipeline of the central pipe group 100; meanwhile, the first end of the center tube group 100 and the second end of the center tube group 100 have different shapes and/or sizes, the first end cap 200 is provided with a first abutting structure 210 matching with the first end of the center tube group 100 in shape and size, and the first abutting structure 210 is connected with the first end of the center tube group 100 in a matching manner; the second end cap 300 is provided with a second docking structure 310 matching with the shape and size of the second end of the central tube group 100, and the second docking structure 310 is connected with the second end of the central tube group 100 in a matching manner; thus, when the first end cap 200 and the second end cap 300 are reversely assembled, the first butt joint structure 210 is not matched with the second end of the central tube group 100 and cannot be assembled, and the second butt joint structure 310 is not matched with the first end of the central tube group 100 and cannot be assembled, so that the first end cap 200 and the second end cap 300 cannot be assembled with the central tube group 100, the first end cap 200 and the second end cap 300 are prevented from being reversely assembled, and the internal waterway of the reverse osmosis membrane element is ensured to be unobstructed.
The first end of the central tube group 100 and the second end of the central tube group 100 have different shapes and/or sizes, and the specific arrangement manner may be that, when the shapes and/or sizes of the pipe orifices of the waste water pipe 120 and the pure water pipe 110 of the central tube group 100 at the first end, or the shapes and/or sizes of the pipe walls are different from the arrangement manner of the waste water pipe 120 and the pure water pipe 110 of the central tube group 100 at the second end, when the shapes and/or sizes of the pipe orifices are different, the first and second docking structures 210 and 310 are provided with different protrusions extending into the corresponding pipe orifices, so as to achieve matching, and when the shapes and/or sizes of the pipe walls are different, the first and second docking structures 210 and 310 are provided with different grooves for accommodating the corresponding pipe walls, so as to achieve matching. Referring to fig. 3 to 8, in the present embodiment, the orifice of the deionized water pipe 110 at the first end of the center pipe group 100 is different from the orifice of the deionized water pipe 110 at the second end of the center pipe group 100 in shape and/or size; the first docking structure 210 comprises a first positioning post 211, the first positioning post 211 having a shape and size that match the orifice of the plain water pipe 110 at the first end of the center pipe set 100; the second alignment structure 310 includes a second alignment post 311, and the shape and size of the second alignment post 311 match with the pipe opening of the deionized water pipe 110 at the second end of the center pipe set 100. In this way, the first positioning column 211 cannot be installed in a matching manner with the pipe opening of the deionized water pipe 110 at the second end of the center pipe group 100, and the second positioning column 311 cannot be installed in a matching manner with the pipe opening of the deionized water pipe 110 at the first end of the center pipe group 100, specifically, the cross sections of the pipe openings at both ends of the deionized water pipe 110 are both circular, the inner pipe diameter of the pipe opening of the deionized water pipe 110 at the first end of the center pipe group 100 is smaller than the inner pipe diameter of the pipe opening of the deionized water pipe 110 at the second end of the center pipe group 100, and the cross section of the first positioning column 211 is smaller than the cross section of the second positioning column 311. At this time, the first positioning column 211 is too small to be reliably received in the orifice of the deionized water pipe 110 at the second end of the center pipe group 100; the second positioning post 311 is too large to extend into the pipe opening of the pure water pipe 110 at the first end of the central pipe group 100; thus, fool-proofing is realized, and the first end cap 200 and the second end cap 300 are prevented from being reversely assembled.
The two end orifices of the deionized water pipe 110 are respectively a first orifice 11a located at the first end of the center pipe group 100 for the first positioning column 211 to be adapted to extend into, and a second orifice 11b located at the second end of the center pipe group 100 for the second positioning column 311 to be adapted to extend into, and the first orifice 11a and the second orifice 11b have different shapes and/or sizes.
Specifically, the cross sections of the first nozzle 11a and the second nozzle 11b are both circular, and the inner diameter of the first nozzle 11a is smaller than that of the second nozzle 11 b; accordingly, the cross section of the first positioning column 211 is smaller than that of the second positioning column 311.
Referring to FIG. 2, in the embodiment shown in FIG. 2, h1Expressed as the height, h, of the first positioning stud 211 protruding into the first orifice 11a2Indicated as the height at which the second positioning post 311 extends into the second nozzle 11 b. In this embodiment, the height of the first positioning column 211 extending into the first pipe orifice 11a is greater than the height of the second positioning column 311 extending into the first pipe orificeThe height of the second nozzle 11 b. Therefore, during assembly, by comparing the height of the first positioning column 211 with the height of the second positioning column 311, it can be known that the larger one (i.e. the first positioning column 211) corresponds to the first pipe opening 11a, and the smaller one (i.e. the second positioning column 311) corresponds to the second pipe opening 11 b.
Referring to FIGS. 2 to 4, in FIG. 3, h3Expressed as the height of the third positioning post 311; in FIG. 4, h4As indicated by the height of fourth locator post 312. Optionally, the height of the first positioning column 211 is greater than the height of the third positioning column 311; and/or the height of second positioning post 212 is greater than the height of fourth positioning post 312.
Referring to fig. 1 and 8, at this time, the pure water outlet 201 may be disposed on the first end cap 200, and only a first through hole 218 needs to be disposed in the first positioning column 211, the first through hole 218 extends along the axial direction of the first positioning column 211, and communicates the inner passage of the deionized water pipe 110 and the deionized water outlet 201 of the first cap 200, the pure water outlet 201 can be communicated with the internal passage of the pure water pipe 110, and of course, the pure water outlet 201 may be provided in the second end cap 300, a second through hole (not shown) is formed in the second positioning column 311, the second through hole extends along the axial direction of the second positioning column 311, the pure water outlet 201 and the internal passage of the pure water pipe 110 can be communicated with each other by communicating the internal passage of the pure water pipe 110 with the pure water outlet 201 of the second cap 300; the specific setting position of pure water outlet 201 can be selected according to the water route design needs, in this embodiment, in order to cooperate with the filter cover, set up pure water outlet 201 on first end cover 200, set up the one end shutoff that pure water pipe 110 is close to second end cover 300 simultaneously for pure water flows towards first end cover 200, is favorable to the directional collection of pure water.
To further ensure the foolproof effect, referring to fig. 5-7, and fig. 9, in this embodiment, the pipe opening of the waste pipe 120 at the first end of the center pipe set 100 is different from the pipe opening of the waste pipe 120 at the second end of the center pipe set 100 in shape and/or size; the first docking structure 210 comprises a plurality of third positioning pillars 212, and the shape and size of the third positioning pillars 212 match with the pipe openings of the waste pipes 120 at the first ends of the central pipe groups 100; the second docking structure 310 includes a plurality of fourth positioning posts 312, and the shape and size of the fourth positioning posts 312 match with the pipe openings of the waste 120 at the second end of the central pipe set 100. Thus, the third positioning post 212 cannot be installed in a matching manner with the pipe orifice of the waste pipe 120 located at the second end of the central pipe group 100, and the fourth positioning post 312 cannot be installed in a matching manner with the pipe orifice of the waste pipe 120 located at the first end of the central pipe group 100, specifically, the inner wall of the pipe orifice of the waste pipe 120 located at the first end of the central pipe group 100 is smooth, the peripheral wall of the third positioning post 212 is correspondingly arranged smoothly, a plurality of limiting protrusions 121 are protruded on the inner wall of the pipe orifice of the waste pipe 120 located at the second end of the central pipe group 100, and a limiting groove 313 for accommodating the limiting protrusion 121 is formed on the peripheral wall of the fourth positioning post 312 corresponding to the limiting protrusion 121. At this time, the third positioning column 212 cannot extend into the pipe opening of the pure water pipe 110 at the second end of the central pipe group 100; the first end cap 200 is further prevented from being fitted to the second end of the center tube set 100, thereby achieving reliable fool-proofing.
The pipe orifices at the two ends of the waste water pipe 120 are respectively a third pipe orifice 12a positioned at the first end of the central pipe group 100 and a fourth pipe orifice 12b positioned at the second end of the central pipe group 100; the first butting structure comprises a plurality of third positioning columns 212, and the third positioning columns 212 are matched with the third pipe orifices 12 a; the second docking structure includes a plurality of fourth positioning pillars 312, and the fourth positioning pillars 312 are matched with the fourth pipe openings 12 b.
At this time, the first end cap 200 may be provided with the waste water outlet 202, a third through hole 219 is formed in the third positioning column 212, and the third through hole 219 extends along the axial direction of the third positioning column 212 and communicates the internal passage of the waste water pipe 120 and the waste water outlet 202 on the third end cap; communication between the waste water outlet 202 and the internal passage of the waste water pipe 120 can be realized; of course, if necessary, said waste water outlet 202 may be provided in said second end cap 300, and a fourth through hole (not shown) is provided in said fourth positioning column 312, said fourth through hole extending along the axial direction of said fourth positioning column 312 and communicating the internal channel of said waste water pipe 120 and said waste water outlet 202 on said fourth end cap; communication of the waste water outlet 202 with the internal passage of the waste pipe 120 may also be achieved; referring to fig. 1 and 8, in order to cooperate with the filter element cover, the specific installation position of the waste water outlet 202 is set on the first end cap 200, and meanwhile, one end of the waste water pipe 120 close to the second end cap 300 is plugged, so that the waste water flows toward the first end cap 200, which is beneficial to directional collection of the waste water; at this time, the waste water outlet 202 and the pure water outlet 201 are both concentrated on the first end cap 200, and the water path design of the corresponding filter element can be simplified.
Referring to fig. 1 and 2, the ro membrane unit further comprises a plurality of ro membrane groups 400, each of the ro membrane groups 400 having a first portion located inside the central tube group 100 and a second portion located outside the central tube group 100, each of the waste water tubes 120 and the pure water tubes 110 being separated by the first portion of one of the ro membrane groups 400; a second portion of the plurality of reverse osmosis membrane modules 400 form a multi-layer membrane module surrounding the center tube stack 100; the first end cap 200 and the second end cap 300 also respectively cover and seal two ends of the plurality of reverse osmosis membrane groups 400. Each reverse osmosis membrane group 400 comprises a reverse osmosis separation membrane and a flow guide net, each waste water pipe 120 of the reverse osmosis membrane element corresponds to one reverse osmosis membrane group 400, a plurality of waste water pipes 120 can be arranged so as to realize multi-membrane coiling, the number of flow channels can be increased, the raw water flux is favorably improved, and the problem that part of reverse osmosis membranes cannot achieve the purpose of filtration due to overlong reverse osmosis membranes and insufficient osmotic pressure is solved; the periphery wall of the pure water pipe 110 is provided with a pure water inlet hole communicated with the internal passage of the pure water pipe 110, the periphery wall of the waste water pipe 120 is provided with a waste water inlet hole communicated with the internal passage of the waste water pipe 120, after the first end cover 200 and the second end cover 300 seal the two ends of the reverse osmosis membrane groups 400, because the central pipe group 100 is wound at the central position by the reverse osmosis membrane groups 400, a raw water channel for feeding water from the side of the outer sides of the reverse osmosis membrane groups 400 and discharging waste water from the middle waste water pipe 120 can be formed; when the reverse osmosis membrane element is used, raw water flows in through a side flow, a flow channel is narrowed, the water inlet area is reduced, a low-thickness flow guide net can be adopted, the water inlet area is continuously reduced, the flow is greatly increased, the contact time of the raw water and a reverse osmosis membrane can be prolonged, and the raw water recovery rate is improved; meanwhile, the water inlet area of raw water is reduced, and the water flow speed on the surface of the reverse osmosis membrane can be increased (when the water inlet flux is constant, the relation between the water inlet flux Q and the water flow speed V is Q/S, wherein S is the water inlet area, specifically S is Ld, L is the length of the membrane at the water inlet end, d is the section thickness, the side flow is mainly reduced by L, and in addition, the thickness d is naturally reduced by a small flow guide net), so that the concentration polarization on the surface of the reverse osmosis membrane can be reduced, the pollution speed of the reverse osmosis membrane element is reduced, the recovery rate of the raw water is favorably improved, and the waste problem of the raw water is solved.
The invention also provides a filter element, which comprises a reverse osmosis membrane element, the specific structure of the reverse osmosis membrane element refers to the above embodiments, and the filter element adopts all the technical schemes of all the above embodiments, so that the filter element also has all the beneficial effects brought by the technical schemes of the above embodiments, and details are not repeated herein.
The invention also provides a water purifier, which comprises a filter element, wherein the specific structure of the filter element refers to the embodiments, and the water purifier adopts all the technical schemes of all the embodiments, so that all the beneficial effects brought by the technical schemes of the embodiments are also achieved, and the detailed description is omitted.
It should be noted that the technical solutions of the embodiments of the present invention can be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should be considered to be absent and not to be within the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A reverse osmosis membrane element, comprising:
the water purification device comprises a water purification pipe, a central pipe group and a water purification pipe, wherein the central pipe group comprises a pure water pipe and a waste water pipe arranged at an interval with the pure water pipe and is provided with a first end and a second end in the length direction of the pure water pipe;
the first end cover is arranged at the first end of the central pipe group and provided with a first butt joint structure which is matched and connected with the first end of the central pipe group, and the first butt joint structure comprises a first positioning column; and
the second end cover is arranged at the second end of the central pipe group, a second butt joint structure matched and connected with the second end of the central pipe group is arranged on the second end cover, and the second butt joint structure comprises a second positioning column;
the two end orifices of the pure water pipe are respectively a first orifice located at the first end for the first positioning column to stretch into in a matching way and a second orifice located at the second end for the second positioning column to stretch into in a matching way, and the first orifice and the second orifice are different in shape and/or size.
2. The reverse osmosis membrane element of claim 1, wherein the first and second orifices of the plain water pipe are each circular in cross-section and the first orifice has an internal diameter smaller than the internal diameter of the second orifice; the cross section of the first positioning column is smaller than that of the second positioning column.
3. The reverse osmosis membrane element of claim 2, wherein the first positioning post extends into the first port to a greater height than the second positioning post extends into the second port.
4. The reverse osmosis membrane element of any one of claims 1-3, wherein the first end cap is provided with a waste water outlet and a pure water outlet; or the first end cover is provided with a wastewater outlet, and the second end cover is provided with a pure water outlet; the waste water pipe is communicated with the waste water outlet, and the pure water pipe is communicated with the pure water outlet.
5. The reverse osmosis membrane element of claim 4, wherein the first end cap is provided with the pure water outlet, and wherein the first positioning column has a first through hole formed therein, the first through hole extending in an axial direction of the first positioning column and communicating the inner passage of the pure water pipe and the pure water outlet in the first end cap.
6. The reverse osmosis membrane element of claim 4, wherein the second end cap defines the pure water outlet, and the second positioning post defines a second through hole therein, the second through hole extending in an axial direction of the second positioning post and communicating the inner passage of the pure water pipe and the pure water outlet of the second end cap.
7. The reverse osmosis membrane element of any one of claims 1-3, wherein the first docking structure further comprises a third positioning post, and the second docking structure further comprises a fourth positioning post;
the pipe orifices at the two ends of the wastewater pipe are respectively a third pipe orifice located at the first end and used for the third positioning column to stretch into in an adaptive manner, and a fourth pipe orifice located at the second end and used for the fourth positioning column to stretch into in an adaptive manner, and the third pipe orifice and the fourth pipe orifice are different in shape and/or size.
8. The reverse osmosis membrane element of claim 7, wherein the inner wall of the third pipe orifice of the waste pipe is smooth, and the peripheral wall of the third positioning column is correspondingly and smoothly arranged; the inner wall of a fourth pipe orifice of the waste water pipe is convexly provided with a plurality of limiting bulges, and the peripheral wall of the fourth positioning column is provided with a limiting groove for correspondingly accommodating the limiting bulges on the inner wall of the fourth pipe orifice.
9. The reverse osmosis membrane element of claim 7, wherein the first locating post has a height greater than a height of the third locating post; and/or the height of the second positioning column is greater than that of the fourth positioning column.
10. The reverse osmosis membrane element of claim 7, wherein the first end cap defines a waste outlet, and wherein the third locating post defines a third through hole therein, the third through hole extending axially of the third locating post and communicating the internal passage of the waste conduit with the waste outlet defined in the third end cap.
11. The reverse osmosis membrane element of any one of claims 1 to 4, further comprising a plurality of reverse osmosis membrane modules, each said reverse osmosis membrane module having a first portion located inside said central tube module and a second portion located outside said central tube module, each said waste water line and said plain water line being separated by a first portion of one said reverse osmosis membrane module; a second portion of the plurality of reverse osmosis membrane modules forming a multi-layer membrane module surrounding the central tube bank; the first end cover and the second end cover are respectively covered and sealed at two ends of the reverse osmosis membrane groups.
12. A filter cartridge comprising a reverse osmosis membrane element according to any one of claims 1 to 11.
13. A water purifier comprising the filter cartridge according to claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110065811.XA CN113559710B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110065811.XA CN113559710B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
| CN201611033620.0A CN107998884B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611033620.0A Division CN107998884B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113559710A true CN113559710A (en) | 2021-10-29 |
| CN113559710B CN113559710B (en) | 2023-03-10 |
Family
ID=62048632
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611033620.0A Active CN107998884B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
| CN202110065811.XA Active CN113559710B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
| CN202110061195.0A Active CN112892215B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611033620.0A Active CN107998884B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110061195.0A Active CN112892215B (en) | 2016-11-16 | 2016-11-16 | Reverse osmosis membrane element, filter element and water purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN107998884B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8807558A (en) * | 1987-06-03 | 1990-04-10 | Eastman Kodak Co | MEMBRANE AND REVERSE OSMOSIS FILTER CARTRIDGE AND WATER FILTRATION EQUIPMENT |
| CN104258733A (en) * | 2014-07-02 | 2015-01-07 | 深圳市诚德来实业有限公司 | A water purifier and a reverse osmosis membrane element thereof |
| CN105645519A (en) * | 2016-01-13 | 2016-06-08 | 碧克仑(北京)净水科技有限公司 | One-end-inlet high-efficiency water-saving reverse osmosis membrane assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM287709U (en) * | 2005-08-19 | 2006-02-21 | Chao Lung Plastics Co Ltd | Improved structure specifically for use with sealing and waste/pure water ports on an outer shell of RO reverse osmosis membrane |
| CN105498544B (en) * | 2016-01-13 | 2019-02-22 | 佛山市美的清湖净水设备有限公司 | A filter equipment that is used for center tube of filter core and has it |
| CN205381989U (en) * | 2016-01-29 | 2016-07-13 | 佛山市麦克罗美的滤芯设备制造有限公司 | High water conservation reverse osmosis membrane side flow structure |
| CN205388143U (en) * | 2016-03-15 | 2016-07-20 | 佛山市吉泉净水科技有限公司 | Pressure water storage bucket convenient to dismouting |
-
2016
- 2016-11-16 CN CN201611033620.0A patent/CN107998884B/en active Active
- 2016-11-16 CN CN202110065811.XA patent/CN113559710B/en active Active
- 2016-11-16 CN CN202110061195.0A patent/CN112892215B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8807558A (en) * | 1987-06-03 | 1990-04-10 | Eastman Kodak Co | MEMBRANE AND REVERSE OSMOSIS FILTER CARTRIDGE AND WATER FILTRATION EQUIPMENT |
| CN104258733A (en) * | 2014-07-02 | 2015-01-07 | 深圳市诚德来实业有限公司 | A water purifier and a reverse osmosis membrane element thereof |
| CN105645519A (en) * | 2016-01-13 | 2016-06-08 | 碧克仑(北京)净水科技有限公司 | One-end-inlet high-efficiency water-saving reverse osmosis membrane assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113559710B (en) | 2023-03-10 |
| CN107998884B (en) | 2021-02-26 |
| CN112892215B (en) | 2022-10-04 |
| CN112892215A (en) | 2021-06-04 |
| CN107998884A (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107998887B (en) | Reverse osmosis filter core, reverse osmosis water purification system and reverse osmosis water purifier | |
| CN107986393B (en) | Filter core and reverse osmosis water purifier | |
| CN103201021B (en) | Spiral wound membrane element product water tube with external flow grooves | |
| CN107998886B (en) | Reverse osmosis filter core, reverse osmosis water purification system and reverse osmosis water purifier | |
| CN108404670B (en) | Reverse osmosis membrane element and water purification equipment with same | |
| CN108404674B (en) | Filter element and water purifier | |
| CN106237861B (en) | Reverse osmosis membrane element, preparation method of reverse osmosis membrane element and filter element | |
| CN108421416B (en) | Spiral wound reverse osmosis membrane element and water purifier | |
| CN107998884B (en) | Reverse osmosis membrane element, filter element and water purifier | |
| US20120228208A1 (en) | Interconnector for filtration apparatus with reduced permeate pressure loss | |
| CN107998894B (en) | Spiral wound reverse osmosis membrane element and water purifier | |
| CN210752127U (en) | Reverse osmosis membrane element and water purification system | |
| CN107998885B (en) | Reverse osmosis filter core, reverse osmosis water purification system and reverse osmosis water purifier | |
| CN113083020A (en) | Reverse osmosis filter element and end cover thereof | |
| CN115779693A (en) | Composite reverse osmosis membrane assembly and water purifier with same | |
| US20170036168A1 (en) | Side Stream Flow Type Reverse Osmosis Membrane Filter | |
| CN108273387B (en) | End cover, spiral roll formula reverse osmosis membrane element and water purifier | |
| KR102610683B1 (en) | Perforated flux pipe for forward osmosis | |
| CN211871483U (en) | Reverse osmosis membrane element and water purification unit | |
| CN217868221U (en) | Nanofiltration roll type membrane filter core | |
| CN211813576U (en) | A reposition of redundant personnel end plate for OCRO membrane module | |
| CN212799744U (en) | Reverse osmosis membrane module and water purification device | |
| CN107983160B (en) | Reverse osmosis water purification system and reverse osmosis water purifier | |
| CN206315681U (en) | Reverse osmosis membrane element, filter element and water purifier | |
| CN111252856A (en) | Water purification filter core and water purification unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |