CN108525523B - Spiral-wound reverse osmosis membrane element and water purifier - Google Patents
Spiral-wound reverse osmosis membrane element and water purifier Download PDFInfo
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- CN108525523B CN108525523B CN201710130623.4A CN201710130623A CN108525523B CN 108525523 B CN108525523 B CN 108525523B CN 201710130623 A CN201710130623 A CN 201710130623A CN 108525523 B CN108525523 B CN 108525523B
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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
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
Abstract
The invention discloses a spiral-wound reverse osmosis membrane element and a water purifier, wherein the spiral-wound reverse osmosis membrane element comprises: the central pipe group comprises a pure water pipe and a plurality of waste water pipes arranged around the pure water pipe at intervals, and the peripheral wall of each waste water pipe comprises a splicing surface facing the pure water pipe and at least one mounting surface connected with the splicing surface; the reverse osmosis membrane group is rolled to the outer side of the central pipe group along the circumferential direction of the central pipe group and comprises a plurality of reverse osmosis membranes and a plurality of water inlet separation nets, each reverse osmosis membrane penetrates through a waste water pipe and a pure water pipe at one side end and then is folded in half, so that the front side of each reverse osmosis membrane is surrounded to form a water inlet channel communicated with the waste water pipe, and the back sides of two adjacent reverse osmosis membranes are surrounded together to form a water production channel communicated with the pure water pipe; and water inlet separation nets are arranged in the water inlet channels, and one side of each water inlet separation net, which is adjacent to the corresponding waste water pipe, is not in contact with the splicing surface of the waste water pipe. So set up, made things convenient for the system of rolling up of reverse osmosis membrane piece.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to 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, is a common element in water treatment technology, and comprises a central pipe group and a reverse osmosis membrane group 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; the reverse osmosis membrane group comprises a plurality of reverse osmosis membranes and a plurality of water inlet separation nets, wherein each reverse osmosis membrane penetrates through one end of each reverse osmosis membrane from a pure water pipe to a waste water pipe and then is folded, so that the front side of each reverse osmosis membrane jointly surrounds a water inlet channel communicated with the waste water pipe, a water production channel communicated with the pure water pipe is formed between the back sides of two adjacent reverse osmosis membranes, a water inlet separation net is arranged in each water inlet channel, and the water inlet separation net is used for guiding water in the water production channel to enter the pure water pipe.
When the existing spiral roll type reverse osmosis membrane element is rolled, one side of the water inlet isolation net is firstly coated with the waste water pipe, then the waste water pipe and the pure water pipe are assembled, and because the clearance between each waste water pipe and the pure water pipe is limited, and the water inlet isolation net has a certain thickness, poor assembly between the waste water pipe and the pure water pipe is easily caused, and further the rolling of the spiral roll type reverse osmosis membrane element is influenced.
Disclosure of Invention
The invention mainly aims to provide a spiral-wound reverse osmosis membrane element, and aims to facilitate the winding of the spiral-wound reverse osmosis membrane element.
In order to achieve the above object, the present invention provides a spiral wound reverse osmosis membrane element, comprising:
the central pipe group comprises a pure water pipe and a plurality of waste water pipes arranged around the pure water pipe at intervals, and the peripheral wall of each waste water pipe comprises a splicing surface facing the pure water pipe and at least one mounting surface connected with the splicing surface;
the reverse osmosis membrane group is rolled to the outer side of the central pipe group along the circumferential direction of the central pipe group and comprises a plurality of reverse osmosis membranes and a plurality of water inlet separation nets, one side end of each reverse osmosis membrane penetrates through a position between one waste water pipe and one pure water pipe and then is folded in half, so that the front side of each reverse osmosis membrane is surrounded to form a water inlet channel communicated with the waste water pipe, and the back sides of two adjacent reverse osmosis membranes are surrounded together to form a water production channel communicated with the pure water pipe; and a water inlet separation net is arranged in each water inlet channel, and one side of each water inlet separation net, which is adjacent to the corresponding waste water pipe, is not contacted with the splicing surface of the waste water pipe.
Preferably, one side of each water inlet separation net adjacent to the corresponding waste water pipe is fixedly connected with the mounting surface of the waste water pipe.
Preferably, each said water inlet screen is secured to a mounting surface of said waste by ultrasonic welding adjacent a side corresponding to said waste.
Preferably, two ends of one side of each water inlet separation net, which is adjacent to the waste water pipe, are fixedly connected with the mounting surface of the waste water pipe through ultrasonic welding.
Preferably, the installation surface of the waste water pipe is provided with a clamping groove extending along the axial direction of the waste water pipe, and the clamping groove is used for clamping one side of the water inlet separation net adjacent to the waste water pipe, so that one side of the water inlet separation net adjacent to the waste water pipe is fixed to the installation surface.
Preferably, one side of each water inlet isolation net adjacent to the waste water pipe is located on one side of the water inlet channel away from the pure water pipe, and is arranged at a distance from the waste water pipe.
Preferably, each waste pipe is provided with a plurality of waste water collecting holes, and the plurality of waste water collecting holes are uniformly distributed along the axial direction of the waste pipe.
Preferably, the spiral wound reverse osmosis membrane element further comprises a plurality of pure water guide cloths; pure water guide cloth is arranged in each water production channel.
Preferably, one side of each pure water guide cloth, which is adjacent to the pure water pipe, is fixedly connected with the pure water pipe.
The present invention also provides a water purifier including a spiral wound reverse osmosis membrane element, the spiral wound reverse osmosis membrane element including:
the central pipe group comprises a pure water pipe and a plurality of waste water pipes arranged around the pure water pipe at intervals, and the peripheral wall of each waste water pipe comprises a splicing surface facing the pure water pipe and at least one mounting surface connected with the splicing surface;
the reverse osmosis membrane group is rolled to the outer side of the central pipe group along the circumferential direction of the central pipe group and comprises a plurality of reverse osmosis membranes and a plurality of water inlet separation nets, one side end of each reverse osmosis membrane penetrates through a position between one waste water pipe and one pure water pipe and then is folded in half, so that the front side of each reverse osmosis membrane is surrounded to form a water inlet channel communicated with the waste water pipe, and the back sides of two adjacent reverse osmosis membranes are surrounded together to form a water production channel communicated with the pure water pipe; and a water inlet separation net is arranged in each water inlet channel, and one side of each water inlet separation net, which is adjacent to the corresponding waste water pipe, is not contacted with the splicing surface of the waste water pipe.
The technical scheme of the invention is that a central group is arranged to be a pure water pipe and a plurality of waste water pipes arranged around the pure water pipe at intervals, one end of each reverse osmosis membrane in a reverse osmosis membrane group passes through between the pure water pipe and one waste water pipe and then is folded, so that the front side of each reverse osmosis membrane jointly surrounds and forms a water inlet channel communicated with the waste water pipe, and the back sides of two adjacent reverse osmosis membranes jointly form a water production channel communicated with the pure water pipe; and a water inlet separation net is arranged in each water inlet channel, and one side of each water inlet separation net, which is adjacent to the corresponding waste water pipe, is not contacted with the splicing surface of the waste water pipe, which faces the pure water pipe. By the arrangement, on one hand, the normal assembly of the pure water pipe and the waste water pipe is prevented from being influenced by the excessively thick thickness of the water inlet separation net, and further the spiral-wound reverse osmosis membrane element is convenient to wind; on the other hand, the problem that the pure water on the periphery of the pure water pipe is not smooth in circulation due to insufficient gaps between the pure water pipe and the waste water pipes caused by the fact that the thickness of the water inlet separation net is too thick can be avoided, and the pure water of the spiral-wound reverse osmosis membrane element is convenient to discharge.
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 one embodiment of a spiral wound reverse osmosis membrane element of the present invention;
FIG. 2 is a schematic structural view of the deionized water pipe of FIG. 1;
FIG. 3 is a schematic diagram of the waste of FIG. 1;
FIG. 4 is an expanded schematic view of one embodiment of a spiral wound reverse osmosis membrane element of the present invention;
FIG. 5 is an expanded schematic view of another embodiment of a spiral wound reverse osmosis membrane element of the present invention;
fig. 6 is an expanded view of the central tube set, the reverse osmosis membrane and the water inlet separation net in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Spiral roll type reverse |
122 | |
| 10 | |
123 | Waste |
| 20 | Reverse |
21 | |
| 11 | |
22 | Pure |
| 12 | |
23 | Water |
| 111 | Pure |
124 | |
| 121 | Splicing surface |
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 at least one such 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.
In order to facilitate the assembly of the spiral wound reverse osmosis membrane element, the present invention provides a new spiral wound reverse osmosis membrane element, please refer to fig. 1, fig. 1 shows a schematic structural diagram of the spiral wound reverse osmosis membrane element of the present invention.
The spiral wound type reverse osmosis membrane element 100 includes a central tube group 10, a reverse osmosis membrane stack 20 wound on the central tube along the circumference of the central tube group 10, and other components.
The central tube group 10 includes a plain water tube 11 and a plurality of waste water tubes 12, and the plurality of waste water tubes 12 are circumferentially arranged at intervals along the circumferential direction of the plain water tube 11.
The deionized water pipe 11 may be cylindrical, prismatic or other shapes, and preferably, the deionized water pipe 11 is prismatic, and referring to fig. 2, the prism is pentagonal. Furthermore, each side surface of the deionized water pipe 11 is provided with a plurality of deionized water inlet holes 111, and the plurality of deionized water inlet holes 111 are uniformly distributed along the axial direction of the deionized water pipe 11, so that the water outside the deionized water pipe 11 can flow into the deionized water pipe 11.
Referring to fig. 3, the outer peripheral wall of each waste pipe 12 has a joint surface 121 facing the pure water pipe 11 and at least one mounting surface 122 connected to the joint surface 121. The splicing surface 121 is adapted to the shape of the outer peripheral wall of the plain water pipe 11, in this embodiment, the outer wall surface of the plain water pipe 11 is a plane, the splicing surface 121 of the waste water pipe 12 is also a plane, the number of the installation surfaces 122 may be one or more, and the installation surfaces 122 may be a plane, an arc surface, or a sequentially pieced plane and arc surface, where the number and the shape of the installation surfaces 122 are not specifically limited.
Be provided with a plurality of waste water inlet holes 123 on each waste pipe 12, and a plurality of waste water inlet holes 123 evenly arrange along the length direction of this waste pipe 12, so set up, be convenient for during each waste pipe 12 outside rivers flow into waste pipe 12.
Referring to fig. 4, the reverse osmosis membrane module 20 includes a plurality of reverse osmosis membranes 21, a plurality of pure water guides 22, a plurality of water inlet screens 23, and the like.
Each reverse osmosis membrane 21 has a front surface and a back surface which are oppositely arranged, and one end of each reverse osmosis membrane 21 passes through between the pure water pipe 11 and a waste water pipe 12 and then is folded in half, so that the front surface of the reverse osmosis membrane 21 can enclose a water inlet channel communicated with the corresponding waste water pipe 12, and simultaneously the back surfaces of two adjacent reverse osmosis membrane groups 20 can enclose a water production channel communicated with the pure water pipe 11. It should be noted that, because the front and the back of each reverse osmosis membrane 21 are spaced, that is, the front and the back of each reverse osmosis membrane 21 are not in contact, it is ensured that the water inlet channel and the water producing channel are isolated from each other, so that the raw water in the water inlet channel is prevented from being mixed with the pure water in the water producing channel, that is, the pure water in the water producing channel is prevented from being polluted.
A pure water guide cloth 22 is arranged in each water production channel, the pure water guide cloth 22 is clamped between two adjacent reverse osmosis membranes 21, the length of the pure water guide cloth 22 is equivalent to that of the water production channel, and the pure water guide cloth is mainly used for guiding pure water in the water production channel to flow to the pure water pipe 11. Since the pure water guide cloth 22 has a certain thickness, the water producing passage has a certain water passing area, and the flow speed of the pure water in the water producing passage is ensured.
The water inlet separation net 23 is arranged in each water inlet channel, the water inlet separation net 23 is mainly used for guiding raw water to flow in the water inlet channel, so that raw water exists in each position of the water inlet channel, and the water inlet separation net 23 has a certain thickness, so that the water inlet channel has a certain water passing area, and the water inlet speed of the spiral-wound reverse osmosis membrane element 100 is further guaranteed.
Since the minimum length of the water inlet screen 23 and the pure water guide cloth 22 determines the filtering area of the reverse osmosis membrane 21, in the embodiment of the present invention, it is preferable to set the length of the water inlet screen 23 and the length of the pure water guide cloth 22 to be approximately equal, and the length of the water inlet screen 23 and the length of the pure water guide cloth 22 are equal to half of the length of the reverse osmosis membrane 21, that is, the length of the water inlet screen 23 and the length of the water inlet channel are approximately equal, and the length of the pure water guide cloth 22 and the length of the water production channel are approximately equal, so that the reverse osmosis membrane 21 is utilized to the maximum extent, which is favorable for increasing the water production speed of the spiral wound reverse osmosis membrane element 100.
And, the side of each water inlet screen 23 adjacent to the waste pipe 12 is not in contact with the splicing surface 121 of the waste pipe 12. Due to the arrangement, the wastewater pipe 12 is prevented from being coated on one side, adjacent to the wastewater pipe 12, of the water inlet separation net 23 along the circumferential direction of the wastewater pipe 12, so that the problem that the pure water pipes 11 and the wastewater pipes 12 cannot be normally assembled due to the fact that the thickness of the water inlet separation net 23 is too thick is solved, the assembly between the pure water pipes 11 and the wastewater pipes 12 is facilitated, and the spiral-wound reverse osmosis membrane element 100 is further convenient to roll; meanwhile, the assembly between the pure water pipe 11 and each waste water pipe 12 is not affected by the water inlet separation net 23, so that the spiral wound reverse osmosis membrane element 100 can use the water inlet separation nets 23 with different thicknesses, which is beneficial to the production and manufacture of the spiral wound reverse osmosis membrane element 100. In addition, the side of each water inlet separation net 23 adjacent to the waste water pipe 12 is set to be not contacted with the splicing surface 121 of the waste water pipe 12, so that the problem that the gap between the pure water pipe 11 and each waste water pipe 12 is insufficient due to the over-thick thickness of the water inlet separation net 23, and further the circulation of the pure water at the periphery of the pure water pipe 11 is not smooth can be avoided.
The technical scheme of the invention is that a central pipe group 10 is arranged into a pure water pipe 11 and a plurality of waste water pipes 12 arranged around the pure water pipe 11 at intervals, one end of each reverse osmosis membrane 21 in a reverse osmosis membrane group 20 passes through between the pure water pipe 11 and one waste water pipe 12 and then is folded in half, so that the front side of each reverse osmosis membrane 21 is commonly surrounded to form a water inlet channel communicated with the waste water pipe 12, and the back sides of two adjacent reverse osmosis membranes 21 jointly form a water production channel communicated with the pure water pipe 11; and a water inlet isolation net 23 is arranged in each water inlet channel, and one side of each water inlet isolation net 23, which is adjacent to the corresponding waste water pipe 12, is not contacted with the splicing surface 121 of the waste water pipe 12, which faces the pure water pipe 11. By the arrangement, on one hand, the normal assembly of the pure water pipe 11 and the waste water pipe 12 is prevented from being influenced by the water inlet separation net 23, and the spiral-wound reverse osmosis membrane element 100 is convenient to roll; on the other hand, it is possible to prevent the occurrence of a problem that the circulation of pure water around the pure water pipe 11 is not smooth due to insufficient clearance between the pure water pipe 11 and each of the waste water pipes 12 caused by an excessively large thickness of the water inlet spacer 23, that is, to facilitate the discharge of pure water from the spiral reverse osmosis membrane element 100.
In an embodiment of the present invention, referring to fig. 4, one side of each water inlet isolation net 23 adjacent to the corresponding waste pipe 12 is fixedly connected to the mounting surface 122 of the waste pipe 12. So set up for each inhalant canal communicates with the waste pipe 12 that corresponds all the time, has avoided each intaking to separate one side that net 23 is close to waste pipe 12 to appear the displacement when spiral roll formula reverse osmosis membrane element 100 is rolled up the system, thereby leads to the problem that one side overwater area undersize of inhalant canal close to waste pipe 12 was blocked even to take place, and then has ensured that the waste water in the inhalant canal can in time be discharged, has also guaranteed inhalant canal's the speed of intaking simultaneously.
Furthermore, the side of each water inlet isolation net 23 adjacent to the corresponding waste pipe 12 is connected and fixed with the mounting surface 122 of the waste pipe 12 by ultrasonic welding. The ultrasonic welding has the characteristics of high welding speed, firm welding and the like, and the high welding speed is convenient for quickly welding one side of the water inlet separation net 23 to the mounting surface 122 of the waste water pipe 12, so that the production efficiency of the spiral-wound reverse osmosis membrane element 100 is improved. The firm welding has ensured that each is intake and has separated net 23 when spiral roll formula reverse osmosis membrane element 100 is rolled up the system, can not drop from the waste pipe 12 that corresponds, thereby guaranteed that the problem that the water area of crossing of the adjacent waste pipe 12 one side of inhalant canal can not diminish or be blockked up appears, and then guaranteed that the waste water in each inhalant canal can in time pass through waste pipe 12 and discharge, avoided the impurity scale deposit in the waste water and influenced reverse osmosis membrane 21's performance, be favorable to prolonging reverse osmosis membrane 21's life.
In addition, compared with the traditional welding process, the ultrasonic welding has the characteristics of low cost, cleanness, no damage and the like. The low cost makes the production cost of the spiral wound reverse osmosis membrane element 100 lower, which brings more benefits to the producer; the cleaning enables the water inlet separation net 23 and the waste water pipe 12 to be assembled without interference of sundries generated by welding, so that the water inlet separation net 23 and the corresponding waste water pipe 12 can be welded and fixed conveniently; the damage-free waste water pipe 12 and the water inlet separation net 23 are prevented from being damaged during welding, and further the raw material consumption is saved through phase change.
Furthermore, in order to improve the assembling efficiency of the water inlet separation net 23 and the waste pipe 12, the two ends of the water inlet separation net 23 adjacent to one side of the waste pipe 12 are fixedly connected with the waste pipe 12 through ultrasonic welding. So set up, reduced the area of welding of intaking and separating net 23 and waste pipe 12, be favorable to improving like this and intake and separate net 23 and waste pipe 12 packaging efficiency.
Further, in order to ensure the firmness of the connection between the water inlet separation net 23 and the waste water pipe 12, the middle of the side of the water inlet separation net 23 adjacent to the waste water pipe 12 can be fixedly connected with the waste water pipe 12 through ultrasonic welding.
Obviously, each water inlet partition 23 may be connected and fixed with the corresponding waste pipe 12 in other manners, for example, referring to fig. 3, a mounting surface 122 of each waste pipe 12 is provided with a clamping groove 124 extending along the axial direction thereof. When the water inlet separation net 23 is assembled with the corresponding waste pipe 12, the water inlet separation net 23 and the waste pipe 12 can be fixedly connected only by inserting one end of the water inlet separation net 23 into the clamping groove 124 of the corresponding waste pipe 12, so that the waste pipe 12 and the water inlet separation net 23 can be conveniently assembled; when spiral roll formula reverse osmosis membrane element 100 is rolled up and is made, because the one end of the net 23 that separates of intaking is connected fixedly with waste pipe 12, just so can avoid intaking to separate the net 23 and produce the displacement when convoluteing along the circumference of central nest of tubes 10, thereby guaranteed to enclose the inhalant canal who establishes the formation by the front of reverse osmosis membrane 21 and communicate with waste pipe 12 all the time, and then guaranteed that the waste water in each inhalant canal can in time discharge through waste pipe 12, avoided the impurity scale deposit in the waste water and influenced reverse osmosis membrane 21's performance, be favorable to prolonging reverse osmosis membrane 21's life.
Further, the clip groove 124 is provided through one end of the waste pipe 12 in order to facilitate the assembly of the water inlet screen 23 and the waste pipe 12. When the waste 12 is assembled with the inlet screen 23, one side of the inlet screen 23 may be inserted into the clamping groove 124 from the open end of the clamping groove 124 and the inlet screen 23 pulled axially of the waste 12 to fit the inlet screen 23 in place. Compared with the method that one side of the water inlet separation net 23 is inserted into the clamping groove 124 along the radial direction of the waste water pipe 12, the method is easier to install one side of the water inlet separation net 23 into the clamping groove 124.
Further, in order to further secure the connection between the water inlet screen 23 and the waste pipe 12, two clamping grooves 124 extending in the axial direction of the waste pipe 12 may be provided at intervals on the mounting surface 122 of each waste pipe 12, and the two clamping grooves 124 may be provided through the same end of the waste pipe 12. When the water inlet separation net 23 is assembled with the waste pipe 12, one side of the water inlet separation net 23 is bent to form a U shape or a V shape, so that the water inlet separation net 23 can be installed in place at one time, and when the water inlet separation net 23 is installed in place, the water inlet separation net 23 surrounds the outer peripheral wall of the waste pipe 12 between the two clamping grooves 124, so that the water inlet separation net 23 is prevented from being separated from the waste pipe 12 under the action of external force.
Of course, the water inlet screen 23 may be fixed to the corresponding waste pipe 12 by other fixing means, which are not listed here.
In another embodiment of the present invention, referring to fig. 5, the side of each water inlet isolation net 23 adjacent to the waste water pipe 12 is located on the side of the water inlet channel away from the plain water pipe 11, and the side of the water inlet isolation net 23 adjacent to the waste water pipe 12 is spaced from the waste water pipe 12. Because the water inlet isolation net 23 and the waste water pipe 12 are arranged at intervals, the water inlet isolation net 23 is not positioned between the waste water pipe 12 and the pure water pipe 11, thereby avoiding the water inlet isolation net 23 from influencing the assembly of each waste water pipe 12 and each pure water pipe 11, being beneficial to the assembly of the waste water pipe 12 and each pure water pipe 11, and being convenient for the rolling of the spiral-wound reverse osmosis membrane element 100.
It should be noted that, the distance between one side of the water inlet separation net 23 adjacent to the waste water pipe 12 and the waste water pipe 12 is small, so that the water inlet passage formed by surrounding the front surface of the reverse osmosis membrane 21 is always communicated with the waste water pipe 12, the normal discharge of waste water in the water inlet passage is further ensured, the influence of impurities in the waste water on the performance of the reverse osmosis membrane 21 due to scaling is avoided, and the service life of the reverse osmosis membrane 21 is prolonged.
When the spiral-wound reverse osmosis membrane element 100 is assembled, the water inlet separation net 23 may be fixed to the front surface of the reverse osmosis membrane 21, and it should be noted that the length of the water inlet separation net 23 is less than or equal to half of the length of the reverse osmosis membrane 21, so that when the fold of the folded reverse osmosis membrane 21 abuts against the waste water pipe 12, the water inlet separation net 23 is not in contact with the splicing surface 121 of the waste water pipe 12, and further, the splicing and assembling of each waste water pipe 12 and the pure water pipe 11 are facilitated.
In order to facilitate the assembly of the spiral wound reverse osmosis membrane element 100, in the embodiment of the present invention, referring to fig. 4 or 5, one side of each pure water guide 22 adjacent to the pure water pipe 11 is fixedly connected to the pure water pipe 11. With such arrangement, displacement of each pure water guide cloth 22 is avoided when the membrane is rolled along the circumferential direction of the central tube group 10, and a water production channel formed by the common enclosing of the reverse surfaces of two adjacent reverse osmosis membranes 21 is ensured to be communicated with the pure water tube 11 all the time, so that the water production speed of the spiral-wound reverse osmosis membrane element 100 is ensured.
Further, the deionized water guides 22 are connected and fixed to the deionized water pipes 11 by ultrasonic welding at the side adjacent to the deionized water pipes 11. The effect of the pure water guide cloth 22 being connected and fixed to the pure water pipe 11 by ultrasonic welding can be referred to the effect of the waste water pipe 12 and the water inlet isolation net 23 by ultrasonic welding, and will not be described herein again.
Obviously, the side of each pure water guide 22 adjacent to the pure water pipe 11 can be fixed to the pure water pipe 11 by other fixing methods, for example, the pure water pipe 11 is provided with a plurality of slits extending along the axial direction thereof, and when each pure water guide 22 is assembled with the pure water pipe 11, only one side of each pure water guide 22 needs to be inserted into the corresponding slit.
It is understood that the slits are similar to the slits 124 of the waste pipe 12, and the slits may be disposed through one end of the plain water pipe 11, so as to facilitate the assembly of the plain water guides 22 with the plain water pipe 11, and the assembly of the plain water guides 22 with the waste pipe 12 may be referred to the assembly of the waste pipe 12 with the water inlet isolation net 23, and will not be described herein again.
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 (10)
1. A spiral wound reverse osmosis membrane element, comprising:
the central pipe group comprises a pure water pipe and a plurality of waste water pipes arranged around the pure water pipe at intervals, and the peripheral wall of each waste water pipe comprises a splicing surface facing the pure water pipe and at least one mounting surface connected with the splicing surface;
the reverse osmosis membrane group is rolled to the outer side of the central pipe group along the circumferential direction of the central pipe group and comprises a plurality of reverse osmosis membranes and a plurality of water inlet separation nets, one side end of each reverse osmosis membrane penetrates through a position between one waste water pipe and one pure water pipe and then is folded in half, so that the front side of each reverse osmosis membrane is surrounded to form a water inlet channel communicated with the waste water pipe, and the back sides of two adjacent reverse osmosis membranes are surrounded together to form a water production channel communicated with the pure water pipe; and a water inlet separation net is arranged in each water inlet channel, one side of each water inlet separation net, which is adjacent to the waste water pipe, is positioned on one side of the water inlet channel, which is far away from the pure water pipe, and one side of each water inlet separation net, which is adjacent to the corresponding waste water pipe, is not in contact with the splicing surface of the waste water pipe.
2. The spiral wound reverse osmosis membrane element of claim 1, wherein each of the water inlet spacer screens is fixedly attached to the installation surface of the waste adjacent to the side corresponding to the waste.
3. The spiral wound reverse osmosis membrane element of claim 2, wherein each of the water inlet spacers is secured to the mounting surface of the waste adjacent a side corresponding to the waste by ultrasonic welding.
4. The spiral wound reverse osmosis membrane element of claim 3, wherein both ends of one side of each of the water inlet spacers adjacent to the waste pipe are fixedly attached to the installation surface of the waste pipe by ultrasonic welding.
5. The spiral wound reverse osmosis membrane element of claim 2, wherein the installation surface of the waste pipe is provided with a clamping groove extending along the axial direction of the waste pipe, the clamping groove is used for clamping one side of the water inlet separation net adjacent to the waste pipe, so that one side of the water inlet separation net adjacent to the waste pipe is fixed to the installation surface.
6. The spiral wound reverse osmosis membrane element of claim 5, wherein the clamp groove is disposed through an end of the waste pipe.
7. The spiral wound reverse osmosis membrane element of claim 1, wherein the side of each of the water inlet screens adjacent the waste is on the side of the water inlet channel remote from the plain water pipe and is spaced from the waste.
8. The spiral wound reverse osmosis membrane element of claim 1, wherein a pure water conducting cloth is disposed in each of the water production channels, and one side of each of the pure water conducting cloth adjacent to the pure water pipe is fixedly connected with the pure water pipe.
9. The spiral wound reverse osmosis membrane element of claim 8, wherein each of the pure water guide cloths is fixedly connected to the pure water pipe at a side adjacent to the pure water pipe by ultrasonic welding.
10. A water purifier comprising the spiral wound reverse osmosis membrane element according to any one of claims 1 to 9.
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| CN201710130623.4A CN108525523B (en) | 2017-03-06 | 2017-03-06 | Spiral-wound reverse osmosis membrane element and water purifier |
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| CN201710130623.4A CN108525523B (en) | 2017-03-06 | 2017-03-06 | Spiral-wound reverse osmosis membrane element and water purifier |
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| CN108525523B true CN108525523B (en) | 2020-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106110894A (en) * | 2016-08-26 | 2016-11-16 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse-osmosis membrane element, filter element and anti-penetration water purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106110894A (en) * | 2016-08-26 | 2016-11-16 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse-osmosis membrane element, filter element and anti-penetration water purifier |
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