CN112403278B - End cover, spiral roll formula reverse osmosis membrane element and water purifier - Google Patents
End cover, spiral roll formula reverse osmosis membrane element and water purifier Download PDFInfo
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- CN112403278B CN112403278B CN202011244808.6A CN202011244808A CN112403278B CN 112403278 B CN112403278 B CN 112403278B CN 202011244808 A CN202011244808 A CN 202011244808A CN 112403278 B CN112403278 B CN 112403278B
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- 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
- B01D63/10—Spiral-wound membrane modules
- B01D63/12—Spiral-wound membrane modules comprising multiple spiral-wound assemblies
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- 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
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- 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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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/21—Specific headers, end caps
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- 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
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an end cover, a spiral roll type reverse osmosis membrane element and a water purifier, wherein the end cover comprises a sleeve part and a covering part, the sleeve part is used for being sleeved with the end parts of a central tube group and a plurality of reverse osmosis membrane groups of the spiral roll type reverse osmosis membrane element, the covering part is positioned at one end of the sleeve part, the covering part is provided with a gluing surface which is used for being hermetically bonded with the end parts of the central tube group and the plurality of reverse osmosis membrane groups, a first annular rib is convexly arranged on the gluing surface to divide the gluing surface into two gluing areas, and the first annular rib is provided with a first glue flowing port which is used for communicating the two gluing areas. When gluing the regional time of beating to gluing in the first annular muscle outside, glue can flow into the inboard region of beating of first annular muscle through first flowing glue mouth and glue, so can beat the flow of the glue on the face of gluing with higher speed, and then can shorten the time of beating of end cover and glue, improved beating of end cover and glued efficiency, be favorable to improving the production efficiency of spiral roll formula reverse osmosis membrane element.
Description
Case information
This application is based on a division of chinese patent application No. 201710008782.7 entitled end cap, spiral wound reverse osmosis membrane element and water purifier, filed on 5/1/2017, and is incorporated by reference in its entirety.
Technical Field
The invention relates to the technical field of water purification, in particular to an end cover, a spiral wound reverse osmosis membrane element and a water purifier.
Background
The spiral roll type reverse osmosis membrane element is also called roll type reverse osmosis membrane element and is a common element in water treatment technology, and comprises a central pipe group and a plurality of reverse osmosis membrane groups wound to the outer side of the central pipe group along the circumferential direction of the central pipe group, wherein the central pipe group comprises a pure water pipe and a plurality of waste water pipes arranged at intervals around the pure water pipe, one end of the pure water pipe is provided with a pure water outlet, and one end of each waste water pipe is provided with a waste water outlet; the front surface of each reverse osmosis membrane group penetrates through between the pure water pipe and the waste water pipe of the central pipe group at one end of the reverse osmosis membrane group and then is folded in half to form a water inlet channel communicated with the waste water pipe, a water production channel communicated with the central pipe is formed between the back surfaces of two adjacent reverse osmosis membrane groups,
the both ends of the length direction of the existing spiral roll type reverse osmosis membrane element are sealed by adopting end covers, namely the end covers are covered at the both ends of the length direction of the spiral central tube group and the plurality of reverse osmosis membrane groups and are in sealing connection with the plurality of reverse osmosis membrane groups through glue water. However, when the edge of the end cover gluing surface is glued, the glue is difficult to flow from the edge of the end cover to the center of the end cover due to poor glue flowability, so that the gluing efficiency of the end cover is reduced.
Disclosure of Invention
The invention mainly aims to provide an end cover and aims to improve the gluing efficiency of the end cover.
In order to achieve the above object, the present invention provides an end cap applied to a spiral roll type reverse osmosis membrane element, where the spiral roll type reverse osmosis membrane element includes a central tube group and a plurality of reverse osmosis membrane groups rolled onto the central tube group, the end cap includes a sleeve portion sleeved with end portions of the central tube group and the plurality of reverse osmosis membrane groups, and a cover portion located at one end of the sleeve portion, the cover portion has a gluing surface for sealing and bonding with end portions of the central tube group and the plurality of reverse osmosis membrane groups, the gluing surface is convexly provided with a first annular rib to divide the gluing surface into two gluing regions, and the first annular rib is provided with a first glue opening for communicating the two gluing regions.
Preferably, the number of the first glue flowing openings is multiple, and the multiple first glue flowing openings are uniformly distributed along the circumferential direction of the first annular rib.
Preferably, the inner surface of the first annular rib is inclined from the inner side to the outer side of the first annular rib.
Preferably, the height of the first annular rib is 1-2 mm.
Preferably, the gluing surface is convexly provided with a second annular rib, and the second annular rib surrounds the first annular rib.
Preferably, the second annular rib is provided with a plurality of second glue flow openings arranged at intervals along the circumferential direction of the second annular rib.
Preferably, the gluing surface is convexly provided with a plurality of reinforcing ribs which are arranged along the circumferential direction of the end cover and extend along the radial direction of the end cover.
Preferably, the cover portion is provided with a pure water outlet pipe and a waste water outlet pipe, the pure water outlet pipe is used for being communicated with the pure water pipe of the central pipe group, and the waste water outlet pipe is used for being communicated with the waste water pipe of the central pipe group.
The invention also provides a spiral roll type reverse osmosis membrane element, which comprises a central tube group, a plurality of reverse osmosis membrane groups rolled to the central tube group and two end covers, wherein the two end covers are respectively arranged at the end parts of the central tube group and the plurality of reverse osmosis membrane groups, and is hermetically connected with the plurality of reverse osmosis membrane groups through glue, at least one of the two end covers is provided with a pure water pipe water outlet pipe and a waste water outlet pipe, the pure water outlet pipe is communicated with the pure water pipe of the central pipe group, the waste water outlet pipe is communicated with the waste water pipe of the central pipe group, wherein the covering part is provided with a gluing surface which is used for being hermetically bonded with the end parts of the central pipe group and the plurality of reverse osmosis membrane groups, the gluing surface is convexly provided with a first annular rib, in order to incite somebody to action it glues the face and separate into two and beat and glue the region, just first annular muscle is provided with two beat the first-class mouth of gluing that glues regional intercommunication.
The invention also provides a water purifier, which comprises a spiral roll type reverse osmosis membrane element, wherein the spiral roll type reverse osmosis membrane element comprises a central tube group, a plurality of reverse osmosis membrane groups rolled to the central tube group and two end covers, the two end covers are respectively arranged at the end parts of the central tube group and the plurality of reverse osmosis membrane groups and are in sealed connection with the plurality of reverse osmosis membrane groups through glue, at least one of the two end covers is provided with a pure water pipe outlet pipe and a waste water outlet pipe, the pure water outlet pipe is communicated with the pure water pipe of the central tube group, the waste water outlet pipe is communicated with the waste water pipe of the central tube group, the covering part is provided with a gluing surface which is in sealed connection with the central tube and the end parts of the plurality of reverse osmosis membrane groups, the gluing surface is convexly provided with a first annular rib so as to divide the gluing surface into two gluing areas, and the first annular rib is provided with a first glue flowing port for communicating the two glue applying areas.
According to the invention, the first annular rib is convexly arranged on the gluing surface of the covering part of the end cover, and the first glue flowing port is arranged on the first annular rib. When gluing the regional time of beating to the beating of first annular muscle outside, glue can flow into the inboard region of beating of first annular muscle through first flowing glue mouth and glue, so can accelerate the flow of the glue on beating the face of gluing, and then can shorten the time of beating of end cover and glue, be favorable to improving the production efficiency of spiral book formula reverse osmosis membrane element.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of an end cap according to the present invention;
FIG. 2 is a schematic structural view of another embodiment of an end cap of the present invention;
FIG. 3 is a cross-sectional view of one embodiment of a spiral wound reverse osmosis membrane element of the present invention;
FIG. 4 is a schematic diagram of the construction of the center tube set of FIG. 3;
FIG. 5 is a schematic view of the deionized water pipe of FIG. 4;
fig. 6 is a schematic view of the assembly of the central tube group and the reverse osmosis membrane stack in fig. 3.
The reference numbers illustrate:
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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection 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 for explaining the relative position relationship between the components, the motion situation, and the like under a certain posture (as shown in the drawing), and if the certain 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 at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In order to facilitate the end cover gluing, the invention provides a new end cover, please refer to fig. 1 and fig. 2, fig. 1 is a schematic structural view of an embodiment of the end cover of the invention; fig. 2 is a schematic structural view of another embodiment of the end cap of the present invention.
Referring to fig. 3, the end cap 10 is applied to a spiral wound reverse osmosis membrane element 100, the spiral wound reverse osmosis membrane element 100 includes a central tube group 20 and a plurality of reverse osmosis membrane groups 30 wound on the central tube group 20, the end cap 10 covers the end portions of the central tube group 20 and the plurality of reverse osmosis membrane groups 30 in the length direction, and seals the plurality of reverse osmosis membrane groups 30; that is, the central tube group 20 and the reverse osmosis membrane stack 30 are covered with the end caps 10 at both ends in the length direction, and at least one end cap 10 of the two end caps 10 is arranged to communicate with the central tube group 20.
The end cap 10 is hermetically connected with the end portions of the plurality of reverse osmosis membrane groups 30 in the length direction by glue, specifically, the end cap 10 includes a sleeve portion 11 for being sleeved with the end portions of the central tube group 20 and the plurality of reverse osmosis membrane groups, and a cover portion 12 located at one end of the sleeve portion, and the cover portion 12 has a gluing surface 121 for being hermetically bonded with the end portions of the central tube group 20 and the plurality of reverse osmosis membrane groups 30.
In order to facilitate the gluing of the gluing surface 121, a first annular rib 122 is convexly arranged on the gluing surface 121 to divide the gluing surface 122 into two gluing areas, and the first annular rib 122 is provided with a first glue flowing opening 122a for communicating the two gluing areas.
When gluing to the gluing surface 121 of the covering part 12, because the area of the gluing area outside the first annular rib 122 is larger than the gluing area inside the first annular rib 122, usually, gluing is performed to the gluing area outside the first annular rib 122, when the glue in the gluing area outside the first annular rib 122 reaches a certain amount, the glue can flow into the gluing area inside the first annular rib 122 from the first glue opening 122a, so that the flow of the glue on the gluing surface 121 can be accelerated, and the gluing time of the end cover 10 can be shortened, which is beneficial to improving the production efficiency of the spiral-wound reverse osmosis membrane element 100.
The invention is provided with a first annular rib 122 protruding from the gluing surface 121 of the cover portion 12 of the end cap 10, and a first glue flowing opening 122a is provided on the first annular rib 122. When gluing the gluing area outside the first annular rib 122, glue can flow into the gluing area inside the first annular rib 122 through the first glue flowing port 122a, so that the flow of the glue on the gluing surface 121 can be accelerated, the gluing time of the end cover 10 can be shortened, and the production efficiency of the spiral-wound reverse osmosis membrane element 100 can be improved.
In order to increase the flowing speed of the glue on the gluing surface 121, a plurality of first glue flowing openings 122a are provided on the first annular rib 122, and the plurality of first glue flowing openings 122a are uniformly distributed along the circumferential direction of the first annular rib 122. So set up for the glue in the regional of beating glue of the first annular muscle 122 outside can be quick flow into the regional of beating glue of first annular muscle 122 inboard through a plurality of first class jiao kou 122a, so set up, can further accelerate the flow of beating the glue on the face of gluing 121, and then can shorten the time of beating of end cover 10 and glue, be favorable to improving spiral coil formula reverse osmosis membrane element 100's production efficiency.
In order to increase the flowing speed of the glue on the gluing surface 121, the inner surface of the first annular rib 122 is inclined from the inner side to the outer side of the first annular rib 122. It should be noted that, if the amount of glue in the gluing area outside the first annular rib 122 is too much, the glue may flow into the gluing area inside the first annular rib 122 over the first annular rib 122, and because the inner surface of the first annular rib 122 is an inclined surface, the glue passing over the first annular rib 122 may flow downward along the inner surface of the first annular rib 122 under the action of its own gravity, compared with the existing vertical surface that sets the inner surface of the first annular rib 122 to be perpendicular to the gluing surface 121, the present invention sets the inner surface of the first annular rib 122 as an inclined surface, which is more favorable for the flow of the glue.
It should be noted that, the inclination angle of the inner surface of the first annular rib 122 is not specifically limited, as long as the inner surface of the first annular rib 122 can play a role in guiding the flow of the glue.
In order to control the glue applying amount, the height of the first annular rib 122 is 1-2 mm, so that the glue applying amount on the glue applying surface 121 is basically consistent with the height of the first annular rib 122, that is, the height of the first annular rib 122 is equal to the thickness of the glue on the glue applying surface 121, and when the thickness of the glue on the glue applying surface 121 reaches the height of the first annular rib 122, the glue applying is stopped. So set up, be convenient for control and beat the volume of gluing, avoided beating glue on the face 121 too much and cause the waste of resource.
In order to facilitate the gluing of the end cap 10, the gluing surface 121 of the end cap 10 is further provided with a second annular rib 123, and the second annular rib 123 is disposed around the first annular rib 122. It should be noted that, the arrangement of the second annular rib 123 further partitions the gluing surface 121 into three gluing areas. Due to the arrangement, glue can be applied to the glue applying areas on the glue applying surface 121 respectively, and the area of each glue applying area is smaller than that of the glue applying surface 121, so that the glue applying amount in each glue applying area can be controlled conveniently; meanwhile, the glue can be spread in each gluing area more quickly, so that the gluing speed of the end cover 10 is further improved, and the production efficiency of the spiral-wound reverse osmosis membrane element 100 is improved.
It should be noted that, when the end cover 10 is glued, glue can be firstly glued to the gluing area outside the second annular rib 123, if the glue thickness in the gluing area outside the second annular rib 123 reaches the thickness of the second annular rib 123, at this time, glue can be glued to the gluing area between the second annular rib 123 and the first annular rib 122, and when the glue amount in the gluing area between the second annular rib 123 and the first annular rib 122 reaches a certain amount, the glue can flow into the gluing area inside the first annular rib 122 through the first glue flow opening 122 a.
In addition, in order to facilitate control of the amount of glue application, the height of the second annular rib 123 corresponds to the height of the first annular rib 122. So set up, guaranteed to beat glue face 121 everywhere glue thickness unanimously, and then be convenient for control and beat the volume of gluing, avoided beating glue on the glue face 121 too much and cause the waste of resource.
To facilitate the gluing of the end cap 10, referring to fig. 2, the second annular rib 123 is provided with a plurality of second glue flow openings 123a arranged along the circumferential direction thereof at intervals. So set up, make the glue in the gluing region outside the second annular member can flow into the gluing region between first annular muscle 122 and the second annular muscle 123 through a plurality of second flow gum mouths 123a to the glue that is in the gluing region between second annular muscle 123 and the second annular muscle 123 can flow into the gluing region to first annular muscle 122 inboard through first flow gum mouth 122 a. That is to say, when gluing the gluing surface 121 of the end cover 10, the gluing surface 121 of the end cover 10 can be filled with glue without adjusting the relative position of the end cover 10 and the gluing equipment, thereby facilitating the gluing of the end cover 10.
Further, the plurality of second glue flow openings 123a on the second annular rib 123 and the first glue flow openings 122a at the corresponding positions on the first annular rib 122 are staggered in the circumferential direction of the end cover 10. When the glue is applied to the gluing surface 121 of the end cover 10, the glue outside the second annular rib 123 flows into the gluing area between the first annular rib 122 and the second annular rib 123 from the second glue flowing port 123a, flows directly to the first annular rib 122, flows along the first annular rib 122 after colliding with the first annular rib 122, and finally flows into the gluing area inside the first annular member through the first glue flowing port 122a on the first annular rib 122. So set up, can avoid flowing into from second flow gum mouth 123a to the glue between first annular muscle 122 and the second annular muscle 123 directly enter into the inboard region of gluing of beating of first annular muscle 122 from first flow gum mouth 122a on first annular muscle 122, and then avoided beating between second annular muscle 123 and the first annular muscle 122 to glue regional problem emergence of beating of gluing the volume not enough.
Further, the inner surface of the second annular rib 123 is inclined from the inner side to the outer side of the second annular rib 123. It should be noted that, if the amount of glue outside the second annular rib 123 is too much, the glue may flow into the gluing area between the first annular rib 122 and the second annular rib 123 over the second annular rib 123, because the inner surface of the second annular rib 123 is an inclined surface, the glue over the second annular rib 123 may flow downward along the inner surface of the second annular rib 123 under the action of its own gravity, and compared with the existing vertical surface that the inner surface of the second annular rib 123 is perpendicular to the gluing surface 121, the flow of the glue is more facilitated by setting the inner surface of the second annular rib 123 as an inclined surface.
Referring to fig. 1 or fig. 2, the gluing surface 121 is further provided with a plurality of ribs 124 that are distributed along the circumferential direction of the end cap 10 and extend along the radial direction of the end cap 10. The arrangement of a plurality of strengthening ribs 124 not only strengthens the strength of the end cover 10, but also can further separate the gluing surface 121 into a plurality of small gluing areas, thereby facilitating the gluing surface 121 of the end cover 10 to glue.
Further, each of the reinforcing ribs 124 extends from a first glue outlet 122a along the radial direction of the end cover 10. So set up, the glue that the region was glued to the outside of being convenient for first annular muscle 122 flows into the region of gluing to the first annular member inboard along strengthening rib 124, and then has been convenient for the flow of glue. Therefore, the flow of the glue on the gluing surface 121 can be accelerated, the gluing time of the end cover 10 can be shortened, and the production efficiency of the spiral wound reverse osmosis membrane element 100 can be improved.
Specifically, one end of the rib 124 is connected to the sleeve portion 11, and the other end of the rib 124 extends toward the first sealant outlet 122 a. One end of the reinforcing rib 124 facing the first glue flow opening 122a is located outside the first glue flow opening 122a and is opposite to the first glue flow opening 122 a. The width of the end of the reinforcing rib 124 close to the first glue flow opening 122a is smaller than the opening width of the first glue flow opening 122 a. The second bead 123a is provided at a portion of the second annular bead 123 between each adjacent two of the reinforcing beads 124.
The cover portion 12 of the end cap 10 is further provided with a pure water outlet pipe 125 and a waste water outlet pipe 126. It should be noted that the number of the pure water outlet pipes 125 and the waste water outlet pipes 126 on the cover portion 12 may be set according to the number of the pure water pipes 21 and the waste water pipes 22 of the central pipe group 20 of the spiral reverse osmosis membrane element 100, that is, when the end cover 10 covers the end portions of the central pipe group 20 and the plurality of reverse osmosis membrane modules 30, the pure water outlet pipes 125 of the cover portion 12 of the end cover 10 are communicated with the pure water pipes 21 of the central pipe group 20, and the waste water outlet pipes 126 are communicated with the waste water pipes 22 of the central pipe group 20. Thus, the design of the waterway of the spiral wound reverse osmosis membrane element 100 is facilitated.
Referring to fig. 3, fig. 3 shows a schematic structural diagram of a spiral wound reverse osmosis membrane element 100 of the present invention, the spiral wound reverse osmosis membrane element 100 includes a central tube group 20, a plurality of reverse osmosis membrane groups 30, and two end caps 10, the specific structure of the end caps 10 refers to the above embodiments, and since the spiral wound reverse osmosis membrane element 100 adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
Referring to fig. 4 and 5, the central tube set 20 includes a plain water tube 21 and a plurality of waste water tubes 22 surrounding the plain water tube 21 and spaced apart from each other; a pure water outlet 211 is provided at least one end of the pure water pipe 21, and a plurality of pure water inlet holes 212 communicated with the inner passage of the pure water pipe 21 are provided on the circumferential wall of the pure water pipe 21; each waste pipe 22 is provided at least at one end thereof with a waste water discharge port 221, and the peripheral wall of the waste pipe 22 is provided with a plurality of waste water inlet holes 222 communicating with the inner passage of the waste pipe 22.
The number of the waste water pipes 22 determines the number of the ro membrane groups 30 and also determines the size of the pure water pipe 21. Specifically, one waste water pipe 22 is disposed corresponding to one RO membrane set 30, that is, the larger the number of waste water pipes 22 is, the larger the number of RO membrane sets 30 is, the larger the flux of the spiral wound RO membrane element 100 is, and accordingly, the pore size of the pure water pipe 21 is increased accordingly. The specific number of the waste water pipes 22 may be set according to actual conditions, and is not particularly limited.
Each reverse osmosis membrane group 30 in the plurality of reverse osmosis membrane groups 30 is provided with a front surface and a back surface which are oppositely arranged, the front surface of each reverse osmosis membrane group 30 penetrates through one end of the reverse osmosis membrane group 30 from a central pipe to a waste water pipe 22 and then is folded in half to form a water inlet channel communicated with the waste water pipe 22, and a water production channel communicated with the pure water pipe 21 is formed between the back surfaces of two adjacent reverse osmosis membrane groups 30.
Specifically, referring to fig. 6, each reverse osmosis membrane group 30 includes a reverse osmosis membrane 31, a water inlet flow guiding net 32 and a pure water flow guiding net 33, the water inlet flow guiding net 32 is installed on the front surface of the reverse osmosis membrane 31, and the pure water flow guiding net 33 is installed on the back surface of the reverse osmosis membrane 31. The front surface of the reverse osmosis membrane 31 passes through the space between the pure water pipe 21 and the waste water pipe 22 at one end of the reverse osmosis membrane 31 and then is folded in half to form the water inlet channel; a water production channel is formed between the reverse sides of the two adjacent reverse osmosis membranes 31; at this time, the inlet water diversion net 32 is positioned in the inlet water passage, and the pure water diversion net 33 is positioned in the pure water passage. Raw water flows in the water inlet channel under the flow guiding action of the water inlet flow guiding net 32, and pure water permeates from the front side of the reverse osmosis membrane 31 to the back side of the reverse osmosis membrane 31 under the action of osmotic pressure; raw water in the water inlet channel passes through the reverse osmosis membrane set 30 and enters the water production channel to form pure water, and the pure water flows to the pure water pipe 21 under the flow guiding action of the pure water flow guiding net 33.
Because the water inlet channel and the water production channel are mutually independent and are thoroughly isolated, the water inlet diversion net 32 of each reverse osmosis membrane group 30 can be effectively ensured not to be contacted with the pure water pipe 21 and the reverse sides of the reverse osmosis membranes 31 of other reverse osmosis membrane groups 30; the pure water diversion net 33 of each reverse osmosis membrane group 30 is not contacted with the waste water pipe 22 and the front surfaces of the reverse osmosis membrane sheets 31 of other reverse osmosis membrane groups 30; that is, the raw water flows only in the water inlet passage and is finally discharged from the waste water pipe 22, and the pure water flows only in the water producing passage and is finally discharged from the pure water pipe 21, thereby preventing the pure water from being contaminated and ensuring the purification effect.
The two end covers 10 are respectively arranged at the end parts of the central pipe group 20 and the plurality of reverse osmosis membrane groups 30 in the length direction and are hermetically connected with the plurality of reverse osmosis membrane groups 30 through glue; and two end caps 10 at least one end cap 10 is disposed in communication with the central tube set 20.
It is understood that at least one of the two end caps 10 is in communication with the center tube set 20, that is, the cover portion 12 of at least one of the end caps 10 is provided with a pure water outlet tube 125 and a waste water outlet tube 126, and the pure water outlet tube 125 is in communication with the pure water tube 21 of the center tube set 20, and the waste water outlet tube 126 is in communication with the waste water tube 22 of the center tube set 20.
Further, referring to fig. 3, the cover portion 12 of the end cap 10, which is not provided with the pure water outlet pipe 125 and the waste water outlet pipe 126, of the two end caps 10 is provided with a positioning protrusion 127, and the positioning protrusion 127 is matched with the central tube group 20 to position the central tube group 20, thereby being beneficial to improving the structural stability of the spiral wound reverse osmosis membrane element 100.
In addition, it should be noted that, since the spiral wound reverse osmosis membrane element 100 of the present invention adopts all technical solutions of all embodiments of the end cap 10, all beneficial effects of the spiral wound reverse osmosis membrane element 100 of the present invention brought by the technical solution of the embodiment of the end cap 10 are correspondingly provided, and are not described in detail herein.
The invention also provides a water purifier, which comprises the spiral-wound reverse osmosis membrane element, the specific structure of the spiral-wound reverse osmosis membrane element refers to the above embodiments, and the water purifier adopts all the technical schemes of all the above embodiments, so that the water purifier at least has all the beneficial effects brought by the technical schemes of the above embodiments, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. An end cover applied to a spiral roll type reverse osmosis membrane element is characterized in that,
the end cover comprises a sleeve part and a covering part positioned at one end of the sleeve part, and the covering part is provided with a gluing surface for sealing and bonding with the end part of the spiral-wound reverse osmosis membrane element;
the gluing device comprises a gluing surface, a gluing device and a control system, wherein a first annular rib is convexly arranged on the gluing surface to divide the gluing surface into two gluing areas, and the first annular rib is provided with a plurality of first glue flowing openings for communicating the two gluing areas;
the gluing surface is also convexly provided with a plurality of reinforcing ribs positioned on the outer side of the first annular rib so as to divide the part of the gluing surface positioned on the outer side of the first annular rib into a plurality of gluing areas and guide the glue in the gluing areas to flow into the gluing areas on the inner side of the first annular rib through the corresponding first glue flowing openings respectively;
the width of one end of the reinforcing rib close to the first glue flowing port is smaller than the width of an opening of the first glue flowing port;
the gluing surface is also convexly provided with a second annular rib which is arranged around the first annular rib and is connected with the plurality of reinforcing ribs; a second glue flowing port is formed in the part, located between every two adjacent reinforcing ribs, of the second annular rib, and the second glue flowing port enables two gluing areas on the inner side and the outer side of the second annular rib to be communicated; and the second glue flowing port of the second annular rib and the first glue flowing port on the first annular rib are arranged in a staggered manner in the circumferential direction of the end cover.
2. The end closure of claim 1, wherein said ribs extend in a radial direction of said end closure, and wherein one end of said ribs is connected to said sleeve portion and the other end of said ribs extends toward said first dispensing opening.
3. The end cap of claim 2, wherein an end of the stiffener facing the first glue outflow opening is located outside and opposite the first glue outflow opening.
4. The end cap of any one of claims 1-3, wherein the first glue opening is plural in number, and the plural first glue openings are evenly distributed along the circumference of the first annular rib.
5. An end closure according to any one of claims 1 to 3, wherein the inner surface of said first annular bead is inclined from the inside to the outside of said first annular bead.
6. An end closure according to any one of claims 1 to 3, wherein the height of the first annular bead is 1 to 2 mm.
7. The end cap of any one of claims 1 to 3, wherein the spiral wound reverse osmosis membrane element comprises a central tube set, the end cap is arranged at the end part of the central tube set, the covering part is provided with a pure water outlet pipe and a waste water outlet pipe, the pure water outlet pipe is used for being communicated with the pure water pipe of the central tube set, and the waste water outlet pipe is used for being communicated with the waste water pipe of the central tube set.
8. A spiral roll type reverse osmosis membrane element, which is characterized by comprising a central tube group, a plurality of reverse osmosis membrane groups rolled to the central tube group and two end covers according to any one of claims 1 to 7, wherein the two end covers are respectively arranged at the end parts of the central tube group and the plurality of reverse osmosis membrane groups and are in sealing connection with the plurality of reverse osmosis membrane groups through glue, at least one of the two end covers is provided with a pure water outlet pipe and a waste water outlet pipe, the pure water outlet pipe is communicated with a pure water pipe of the central tube group, and the waste water outlet pipe is communicated with a waste water pipe of the central tube group.
9. A water purifier comprising the spiral wound reverse osmosis membrane element according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011244808.6A CN112403278B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011244808.6A CN112403278B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
| CN201710008782.7A CN108273387B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
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| CN201710008782.7A Division CN108273387B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
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| CN112403278A CN112403278A (en) | 2021-02-26 |
| CN112403278B true CN112403278B (en) | 2022-05-17 |
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| CN201710008782.7A Active CN108273387B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
| CN202011244808.6A Active CN112403278B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
| CN202011242997.3A Active CN112403277B (en) | 2017-01-05 | 2017-01-05 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
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| CN108273387B (en) * | 2017-01-05 | 2020-12-01 | 佛山市顺德区美的饮水机制造有限公司 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
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|---|---|---|---|---|
| US3712475A (en) * | 1970-08-31 | 1973-01-23 | Baxter Laboratories Inc | Positive pressure lid for dialyzer apparatus |
| US5322381A (en) * | 1992-05-15 | 1994-06-21 | Argo Ii Richard S | Sealant applicator and method for sealing headed fasteners |
| US8003407B2 (en) * | 2004-07-29 | 2011-08-23 | Relia Diagnostic Systems, Llc | Lateral flow system and assay |
| EP1676618B1 (en) * | 2004-12-23 | 2011-01-19 | Millipore Corporation | Method for manufacturing filter cartridge |
| JP5168615B2 (en) * | 2007-02-23 | 2013-03-21 | 三浦工業株式会社 | Reverse osmosis membrane treatment equipment |
| CN101683590B (en) * | 2008-09-24 | 2011-09-21 | 苏州立升净水科技有限公司 | Immersive membrane component, membrane pile and filter system |
| CN101708433B (en) * | 2009-10-30 | 2011-11-23 | 艾欧史密斯（上海）水处理产品有限公司 | Coiled reverse osmosis membrane element |
| CN202366849U (en) * | 2011-09-21 | 2012-08-08 | 上汽通用五菱汽车股份有限公司 | Gluing tool for automobile luggage lid |
| CN203707134U (en) * | 2013-11-21 | 2014-07-09 | 四川虹视显示技术有限公司 | Packaging structure of OLED display device |
| CN204996652U (en) * | 2015-09-18 | 2016-01-27 | 阿特斯(中国)投资有限公司 | Frame gluing squirt head |
| CN205550053U (en) * | 2016-03-24 | 2016-09-07 | 广州泊通过滤膜科技有限公司 | Formula of book membrane shell structure |
| CN106110894B (en) * | 2016-08-26 | 2019-08-13 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse-osmosis membrane element, filter core and anti-penetration water purifier |
| CN106237861B (en) * | 2016-09-20 | 2020-10-13 | 佛山市美的清湖净水设备有限公司 | Reverse osmosis membrane element, preparation method of reverse osmosis membrane element and filter element |
| CN108273387B (en) * | 2017-01-05 | 2020-12-01 | 佛山市顺德区美的饮水机制造有限公司 | End cover, spiral roll formula reverse osmosis membrane element and water purifier |
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| Publication number | Publication date |
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| CN112403278A (en) | 2021-02-26 |
| CN112403277B (en) | 2022-04-15 |
| CN112403277A (en) | 2021-02-26 |
| CN108273387B (en) | 2020-12-01 |
| CN108273387A (en) | 2018-07-13 |
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