WO2018036064A1 - Élément de membrane d'osmose inverse enroulé en spirale, élément de filtre et purificateur d'eau d'osmose inverse - Google Patents

Élément de membrane d'osmose inverse enroulé en spirale, élément de filtre et purificateur d'eau d'osmose inverse Download PDF

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Publication number
WO2018036064A1
WO2018036064A1 PCT/CN2016/113101 CN2016113101W WO2018036064A1 WO 2018036064 A1 WO2018036064 A1 WO 2018036064A1 CN 2016113101 W CN2016113101 W CN 2016113101W WO 2018036064 A1 WO2018036064 A1 WO 2018036064A1
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WO
WIPO (PCT)
Prior art keywords
reverse osmosis
pure water
osmosis membrane
waste water
water pipe
Prior art date
Application number
PCT/CN2016/113101
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English (en)
Chinese (zh)
Inventor
蔡雪刚
桂鹏
郑防震
宋国栋
Original Assignee
佛山市顺德区美的饮水机制造有限公司
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Application filed by 佛山市顺德区美的饮水机制造有限公司 filed Critical 佛山市顺德区美的饮水机制造有限公司
Publication of WO2018036064A1 publication Critical patent/WO2018036064A1/fr
Priority to US16/286,540 priority Critical patent/US11077406B2/en

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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
    • B01D63/10—Spiral-wound membrane modules
    • B01D63/101—Spiral winding
    • 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
    • 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

Definitions

  • the invention relates to the field of reverse osmosis water purification technology, in particular to a spiral wound reverse osmosis membrane element, a filter element and a reverse osmosis water purifier.
  • a spiral wound reverse osmosis membrane element also known as a roll-type reverse osmosis membrane element, is a commonly used component in water treatment technology and generally comprises a central tube with a plurality of holes and an alternating stack of layers wound on the central tube. Reverse osmosis membrane and diversion network. The center tube and the two ends of the housing are connected by a connector.
  • the raw water enters the casing from one end of the casing, and a part of the water passes through the reverse osmosis membrane to form a lower concentration of water under the action of the pressure.
  • the water After entering the central pipe, the water flows out from one end or both ends of the central pipe.
  • the main object of the present invention is to provide a spiral wound reverse osmosis membrane element which aims to improve the recovery rate of raw water and achieve high water saving.
  • a spiral wound reverse osmosis membrane element comprises a central tube group, a multi-page reverse osmosis membrane group, a first end cover and a second end cover;
  • the central tube group includes a pure water pipe and a plurality of waste water pipes arranged at intervals, a plurality of the waste water pipes are arranged around the pure water pipe, and a peripheral wall of the pure water pipe is provided with a pure water inlet hole communicating with the internal passage of the pure water pipe, and each a peripheral wall of the waste water pipe is provided with a wastewater inlet hole communicating with an internal passage of the waste pipe;
  • each of the reverse osmosis membrane groups has a first portion located inside the central pipe group and located at the central pipe a second portion external to the group, each of said waste water pipe and said pure water pipe being separated by a first portion of said reverse osmosis membrane group; a plurality of said second portion of said reverse osmosis membrane group being formed around a multilayer film assembly
  • the waste water discharge port and the pure water discharge port are both disposed on the first end cover.
  • the inner side of the first end cap is coated with a sealant, and the first end cap and the reverse osmosis membrane group are sealed by a sealant; and/or the second end cap The inner side is coated with a sealant, and the second end cap is sealed with the reverse osmosis membrane sheet by a sealant.
  • the inner side of the first end cover has a plurality of first extending pipes communicating with the waste water discharge port corresponding to the position and the quantity of the waste water pipe, and the first extending pipe extends into the corresponding
  • the waste water pipe is connected to the waste water discharge port and the corresponding waste water pipe;
  • the inner side of the first end cover is convexly disposed at a position corresponding to the pure water pipe and is connected to the second water supply outlet Extending into the tube, the second extension tube extends into the pure water pipe and communicates with the pure water discharge port and the pure water pipe.
  • a plurality of first positioning protrusions are protruded from the inner side of the second end cover corresponding to the position and the quantity of the waste water pipe, and the first positioning protrusions are protruded into the corresponding waste pipe;
  • a second positioning protrusion is protruded from an inner side of the second end cover corresponding to the position of the pure water pipe, and the second positioning protrusion extends into the pure water pipe.
  • the pure water pipe is blocked away from one end of the first end cover, so that pure water flows to the pure water discharge port of the first end cover; the waste pipe is away from the first One end of the end cap is blocked to allow waste water to flow to the waste water discharge port of the first end cap.
  • each of the reverse osmosis membranes comprises a reverse osmosis membrane, an influent diversion network, and a pure water diversion network; each of the reverse osmosis membranes has a reverse osmosis membrane disposed inwardly inwardly, a second portion of the plurality of the reverse osmosis membrane sheets is stacked and wound circumferentially around the central tube group; an inflow channel is formed between the front interlayer of the same reverse osmosis membrane; two adjacent reverse osmosis A water producing flow path is formed between the opposite sandwich layers of the diaphragm; the influent diversion net and the waste water pipe are located in the influent flow channel, and the pure water diversion net is located in the product water flow channel.
  • the water producing flow passage is closedly sealed except for the side edges adjacent to the side of the pure water pipe, so that the water producing flow path has only a pure water outlet toward the pure water pipe.
  • the number of the waste water pipes is N, and N is greater than or equal to 3;
  • the cross section of the pure water pipe is N-shaped and correspondingly has N side surfaces, each of which is provided on the side surface The pure water is introduced into the water hole; each of the waste water pipes is disposed corresponding to a position of the side surface.
  • each of the side surfaces is spaced apart from the plurality of pure water inlet holes, and the plurality of pure water inlet holes are evenly arranged along the length direction of the pure water pipe, and/or each A plurality of the wastewater inlet holes are disposed on the waste pipe, and a plurality of the wastewater inlet holes are evenly arranged along the longitudinal direction of the waste pipe.
  • the pure water pipe has a circular cross section, and the peripheral wall of the pure water pipe is divided into a plurality of arc surface segments corresponding to the plurality of the waste water pipes in a circumferential direction thereof, and each of the arc surface segments is The pure water inlet holes are respectively provided; each of the waste water pipes is disposed corresponding to a position of one of the curved surface segments.
  • each of the curved surface segments is spaced apart from the plurality of pure water inlet holes, and the plurality of pure water inlet holes are evenly arranged along the length direction of the pure water pipe, and/or A plurality of the waste water inlet holes are disposed on each of the waste water pipes, and a plurality of the waste water inlet holes are evenly arranged along a longitudinal direction of the waste water pipe.
  • a waste water guiding groove is defined in a peripheral wall of the waste water pipe, and the wastewater inlet water hole is disposed in the waste water guiding groove.
  • the peripheral wall of the pure water pipe is provided with a first letting opening extending along the length of the pure water pipe.
  • a first reinforcing rib is disposed in the first retaining opening, and two ends of the first reinforcing rib are respectively connected to different two sides of the first letting opening.
  • the peripheral wall of the waste pipe is provided with a second yielding opening extending along the length of the waste pipe.
  • a second reinforcing rib is disposed in the second retaining opening, and two ends of the second reinforcing rib are respectively connected to different two sides of the second retaining opening.
  • the pure water pipe and the plurality of waste water pipes are combined to form a cylindrical shape.
  • the invention also provides a filter cartridge comprising a casing, a waterway converter and a spiral wound reverse osmosis membrane element, the spiral wound reverse osmosis membrane element comprising a central tube group, a multi-page reverse osmosis membrane group, and a first end a cover and a second end cover;
  • the central tube set includes a pure water pipe and a plurality of waste water pipes arranged at a distance, and the plurality of waste water pipes are arranged around the pure water pipe, and the peripheral wall of the pure water pipe is opened a pure water inlet hole communicating with the internal passage of the pure water pipe, and a peripheral wall of each of the waste water pipes is provided with a waste water inlet hole communicating with an internal passage of the waste pipe;
  • each of the reverse osmosis membrane groups is Having a first portion located inside the central tube group and a second portion located outside the center tube group, each of the waste water tube and the pure water tube being separated by a first portion of one of the reverse osmosis
  • the invention also provides a reverse osmosis water purifier comprising a filter element;
  • the filter element comprises a casing, a water path converter and a spiral wound reverse osmosis membrane element, the spiral wound reverse osmosis membrane element comprising a central tube a group, a multi-page reverse osmosis membrane group, a first end cap and a second end cap;
  • the central tube set comprises a pure water pipe and a plurality of waste water pipes arranged at a distance, and the plurality of waste water pipes surround the pure water a pipe arrangement, the peripheral wall of the pure water pipe is provided with a pure water inlet hole communicating with the internal passage of the pure water pipe, and the peripheral wall of each of the waste pipe is provided with a waste water connecting the internal passage of the waste pipe a water inlet hole;
  • each of the reverse osmosis membrane groups has a first portion located inside the central tube group and a second portion located outside the center tube group, each of the waste water tube and the pure water tube being
  • the central tube set of the spiral wound reverse osmosis membrane element of the technical solution of the present invention comprises a pure water pipe and a plurality of waste water pipes surrounding the pure water pipe; each of the waste water pipes of the spiral wound reverse osmosis membrane element corresponds to a reverse osmosis membrane Group, which can realize multi-film sheet winding, can increase the number of flow channels, is beneficial to increase the raw water flux, and solve the problem that the diaphragm is too long and the osmotic pressure is insufficient, so that some of the diaphragms do not achieve the filtering purpose, through the first end cover And the second end cover respectively clamps the two ends of the central tube group and the reverse osmosis membrane group for positioning, and at the same time, a pure water discharge port and a waste water discharge port are arranged on the first end cover to form a communication line with the corresponding pipeline of the central pipe group; After the first end cover and the second end cover seal the two ends of the reverse osmosis membrane group, since the
  • Low thickness water can also be used The flow net continues to reduce the inflow area, and the flow is greatly increased. Therefore, the contact time between the raw water and the reverse osmosis membrane can be increased, and the recovery rate of the raw water can be increased. Meanwhile, the reverse osmosis membrane can be enlarged because the original water inlet area is reduced.
  • the surface water flow velocity of the sheet can reduce the concentration polarization of the reverse osmosis membrane surface, reduce the pollution speed of the spiral wound reverse osmosis membrane element, and improve the recovery rate of the raw water, thereby improving the waste of raw water and achieving high water saving.
  • FIG. 1 is a schematic structural view of an embodiment of a spiral wound reverse osmosis membrane element of the present invention
  • Figure 2 is a cross-sectional view taken along line A-B-C-D of Figure 1;
  • Figure 3 is an enlarged view of E in Figure 2;
  • Figure 4 is an enlarged view of the portion F in Figure 2;
  • Figure 5 is a schematic view showing the structure of the first end cover of the spiral wound reverse osmosis membrane element shown in Figure 1;
  • Figure 6 is a schematic view showing the winding film of the reverse osmosis membrane group and the central tube group of the spiral wound reverse osmosis membrane element shown in Figure 1;
  • Figure 7 is a plan view of a reverse osmosis membrane group of the spiral wound reverse osmosis membrane element shown in Figure 1 in cooperation with a waste water pipe and a pure water pipe;
  • Figure 8 is a schematic structural view of a central tube set of the spiral wound reverse osmosis membrane element shown in Figure 1;
  • Figure 9 is a plan view of the central tube set of Figure 8.
  • Figure 10 is a schematic view showing the structure of a pure water pipe of the spiral wound reverse osmosis membrane element shown in Figure 1;
  • FIG 11 is a schematic structural view of a waste water pipe of the spiral wound reverse osmosis membrane element shown in Figure 1;
  • Figure 12 is a plan view showing a central tube set of another embodiment of the spiral wound reverse osmosis membrane element of the present invention.
  • Figure 13 is a schematic exploded view of the filter element of the present invention.
  • the directional indication is only used to explain in a certain posture (as shown in the drawing)
  • the relative positional relationship between the components, the motion situation, and the like if the specific posture changes, the directional indication also changes accordingly.
  • first”, “second”, etc. in the embodiments of the present invention, the description of the "first”, “second”, etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the invention provides a spiral wound reverse osmosis membrane element.
  • the spiral roll reverse osmosis membrane element 700 includes: a multi-page reverse osmosis membrane
  • the group 100, the central tube set 200, the first end cap 300 and the second end cap 400, the central tube set 200 includes a pure water pipe 210 and a plurality of waste water pipes 220 spaced apart from each other, and the plurality of waste water pipes 220 surround
  • the pure water pipe 210 is arranged, and the peripheral wall of the pure water pipe 210 is provided with a pure water inlet hole 211 communicating with the internal passage of the pure water pipe 210, and the peripheral wall of each of the waste water pipes 220 is opened for communication.
  • each of the reverse osmosis membrane groups 100 has a first portion located inside the center tube group 200 and a second portion located outside the center tube group 200
  • Each of the waste water pipe 220 and the pure water pipe 210 is separated by a first portion of the reverse osmosis membrane group 100;
  • a plurality of the second portion of the reverse osmosis membrane group 100 is formed around the a multilayer film assembly around the central tube set 200;
  • the first end cap 300 and the The end caps 400 are respectively sleeved on the two ends of the central tube set 200 and the multi-page reverse osmosis membrane group 100 to position the central tube set 200 and the reverse osmosis membrane 100 group;
  • the first end cover 300 is provided with a waste water discharge port 310 and a pure water discharge port 320 (please refer to FIG.
  • the first end cover 300 is provided with a waste water discharge port, and the second end cover 400 is provided.
  • There is a pure water discharge port (not shown in this way); the waste water pipe 220 is connected to the waste water discharge port 310, and the pure water pipe 210 is connected to the pure water discharge port 320.
  • the central tube set 200 of the spiral wound reverse osmosis membrane element 700 of the technical solution of the present invention comprises a pure water pipe 210 and a plurality of waste water pipes 220 surrounding the pure water pipe 210; each waste water pipe 220 of the spiral wound reverse osmosis membrane element 700 Corresponding to one page of reverse osmosis membrane group 100, multi-film sheet winding can be realized, the number of flow channels can be increased, the raw water flux can be improved, and the reverse osmosis membrane 110 can be solved for excessive reverse osmosis pressure, resulting in partial reverse osmosis membrane.
  • the first end cap 300 and the second end cap 400 respectively clamp the ends of the central tube set 200 and the reverse osmosis membrane group 100 for positioning while being on the first end cap 300
  • the pure water discharge port 320 and the waste water discharge port 310 are disposed to form a flow path communicating with the corresponding pipeline of the central pipe group 200; after the first end cover 300 and the second end cover 400 seal the ends of the reverse osmosis membrane group 100 Since the central tube set 200 is wound around the center position by the multi-page reverse osmosis membrane group 100, the outer side water flowing into the multi-page reverse osmosis membrane group 100 can be formed, and the intermediate waste water pipe 220 discharges the raw water water path of the wastewater;
  • the spiral wound reverse osmosis membrane element 700 of the present invention When used, the raw water enters the water through the side stream, the flow channel is narrowed, the water inlet area is reduced, and the low-inflow water guiding net 120 can be used to continue to reduce the water inlet area
  • the contact time of the reverse osmosis membrane 110 increases the recovery rate of the raw water; meanwhile, since the water inlet area of the raw water is reduced, the surface water velocity of the reverse osmosis membrane 110 can be increased (the influent flux Q when the influent flux is constant)
  • the small inflow water guiding net 120 naturally reduces the thickness d), thereby reducing the concentration polarization of the surface of the reverse osmosis membrane 110 and reducing the contamination speed of the spiral wound reverse osmosis membrane element 700. It is beneficial to improve the recovery rate of raw water, thereby improving the waste of raw water and achieving high water saving.
  • a pure water inlet hole 211 is formed in the peripheral wall of the pure water pipe 210 to communicate with the internal passage of the pure water pipe 210;
  • a waste water inlet hole 221 that communicates with the internal passage of the waste water pipe 220 is opened on the peripheral wall of the waste water pipe 220.
  • the pure water and the wastewater enter the corresponding passage through the pure water inlet hole 211 and the waste water inlet hole 221, respectively.
  • the specific quantity of the waste water pipe 220 determines the number of pages of the reverse osmosis membrane group 100, and also determines the size of the pure water pipe 210.
  • one page of the reverse osmosis membrane group 100 corresponds to one waste water pipe 220, and the waste water pipe
  • the specific number and shape of the waste water pipe 220 and the shape of the corresponding pure water pipe 210 can be referred to the specific embodiment of the present invention and set according to actual conditions.
  • the waste water discharge port 310 and the pure water discharge port 320 may be disposed on the same end cover (the first end cover 300 or the second end cover 400), or may be respectively disposed on different end covers, and both can be used to discharge waste water and pure
  • the waste water discharge port 310 and the pure water discharge port 320 are disposed on the first end cover 300.
  • the wastewater discharge port 310 and the pure water discharge port 320 are both disposed on the same side.
  • the inner side of the first end cover 300 is coated with a sealant
  • the first end cover 300 is The reverse osmosis membrane group 100 is sealed by a sealant, similar to the arrangement of the first end cover 300; in the embodiment, the inner side of the second end cover 400 is coated with a sealant.
  • the second end cover 400 and the reverse osmosis membrane group 100 are sealed and sealed by a sealant. After bonding, the first end cover 300 and the second end cover 400 are not easily detached, and the installation reliability is greatly improved.
  • the sealant seals both ends of the reverse osmosis membrane group 100, and blocks the water from flowing toward the first end cap 300 or the second end cap 400, thereby realizing the water path of the water flowing out in the middle of one side.
  • the inner side of the first end cover 300 has a plurality of communicating with the waste water discharge corresponding to the position and the quantity of the waste water pipe 220.
  • a first extending tube 311 of the outlet 310 the first extending tube 311 extending into the corresponding waste water pipe 220 to communicate the waste water discharge port 310 and the waste water pipe 220; specifically, the first extending pipe One end of the 311 extends into the waste water pipe 220 to communicate with the waste water pipe 220, and the other end of the first extended pipe 311 communicates with the waste water discharge port 310, thereby reliably achieving the connection of the waterway, and the first extending pipe 311 also has a positioning function.
  • the alignment of the first end cap 300 with the central tube set 200 can be assisted to improve the structural compactness and reliability of the spiral wound reverse osmosis membrane element 700.
  • the inner side of the first end cover 300 is convexly disposed at a position corresponding to the pure water pipe 210 to be connected to the second water inlet pipe 320.
  • the second extension pipe 321 extends into the pure water pipe 210 to communicate the pure water discharge port 320 and the pure water pipe 210.
  • the action and effect of the second extension tube 321 can be analogized to the first extension tube 311, and will not be described herein.
  • a plurality of first positioning protrusions 401 are protruded from the inner side of the second end cover 400 corresponding to the position and the quantity of the waste water pipe 220.
  • the first positioning protrusion 401 extends into the corresponding waste pipe 220; the inner side of the second end cover 400 is convexly disposed with a second positioning protrusion 402 corresponding to the position of the pure water pipe 210.
  • Two positioning projections 402 extend into the pure water pipe 210.
  • the first positioning protrusion 401 is engaged with the waste water pipe 220, and the second positioning protrusion 402 is engaged with the pure water pipe 210, so that the alignment operation of the second end cover 400 can be simplified, and the central tube set 200 and the second end cover 400 pass.
  • the first positioning protrusion 401 and the second positioning protrusion 402 are connected to further improve the structural compactness and reliability of the entire spiral wound reverse osmosis membrane element 700.
  • the second end cap 400 can also be designed to correspond to the water outlet of the first end cap 300 when needed, so that a pure water flow path or/and a waste water flow path is also formed at the second end cover 400. Please refer to FIG. 2 .
  • the second end cover 400 in order to simplify the water path, is not provided with a water outlet, and the pure water and the waste water in the pure water pipe 210 are sealed when the second end cover 400 is sealed with the central pipe set.
  • the waste water in the tube 220 does not flow toward the second end cap 400 to be discharged, but when the sealing effect between the second end cap 400 and the center tube 200 is not good, pure water and waste water may flow to the second end cap 400.
  • the end of the pure water pipe 210 away from the first end cover 300 is blocked. Pure water is caused to flow to the pure water discharge port 320 of the first end cap 300; the end of the waste water pipe 220 remote from the first end cover 300 is blocked, so that the waste water is directed to the first end The cover 300 flows.
  • the pure water flows in a certain direction, and the pure water can be collected reliably. After the plugging, the flow direction of the wastewater is constant, and the wastewater can be collected reliably.
  • the spiral wound reverse osmosis membrane element 700 is generally placed vertically, in which case the corresponding pure water pipe 210 and the plurality of the waste water pipes 220 are also placed in a vertical direction, the first end The cover 300 is above, the second end cover 400 is below, the lower port of the pure water pipe 210 is blocked, and the lower ports of the plurality of waste pipes 220 are blocked, and pure water and waste water are collected from the upper end.
  • the water flow is uniform and the piping design is convenient.
  • each of the reverse osmosis membrane groups includes a reverse osmosis membrane 110, an influent diversion network 120, and a pure water diversion network 130; an influent diversion network 120 and a pure water diversion network.
  • the raw water flows on the front surface of the reverse osmosis membrane 110, and under the action of the osmotic pressure, from the front surface of the reverse osmosis membrane 110 to the reverse osmosis membrane 110
  • the reverse side penetrates the pure water, and the pure water is generated on the reverse side of the reverse osmosis membrane 110 and flows to the pure water pipe 210 under the diversion of the pure water flow guiding net 130.
  • the reverse osmosis membrane 110 can be adjacent to the front surface by folding in the opposite direction, and the reverse surface and the reverse surface are adjacent to each other to avoid unnecessary contact, thereby preventing the pure water from being contaminated; in actual operation, the reverse osmosis membrane 110 can be folded in frontally and inwardly. The fold can also be reversed inwardly and folded in half, and can be reasonably selected according to the actual situation. Please refer to FIG. 7. In this embodiment, the reverse osmosis membrane 110 of each of the reverse osmosis membrane groups 100 is folded inwardly in the front direction, and the second partial fusion of the plurality of the reverse osmosis membrane groups 100 is combined.
  • the central tube group 200 is wound together in a circumferential direction; an inflow channel is formed between the front interlayers of the reverse osmosis membrane 110; and a water production channel is formed between the opposite sandwich layers of the two adjacent reverse osmosis membranes 110;
  • the influent diversion network 120 and the waste water pipe 220 are located in an influent flow channel, and the pure water diversion net 130 is located in a product water flow channel.
  • the inlet flow passage and the production water flow passage are independent from each other and completely isolated, and can effectively ensure that the inlet water guiding net 120 of each of the reverse osmosis membrane groups 100 is not associated with the pure water pipe 210 and the like.
  • the reverse osmosis membrane 110 of the reverse osmosis membrane group 100 is in reverse contact; the pure water flow grid 130 of each of the reverse osmosis membrane groups 100 is not associated with the waste water pipe 220 and other said reverse osmosis
  • the front side of the reverse osmosis membrane 110 of the membrane group 100 is in contact; the raw water flows only in the influent water channel and is finally discharged by the waste water pipe 220.
  • the pure water flows only in the water producing flow passage and is finally discharged by the pure water pipe 210, thereby avoiding pure water pollution. Guarantee the purification effect.
  • the water producing flow passage may be closed and sealed except for the side adjacent to the side of the pure water pipe 210, so that the water producing flow path is only Having a pure water outlet toward the pure water pipe 210; at this time, the product water flow channel forms a membrane bag with a three-side sealed side opening, and the membrane bag mouth faces the pure water pipe 210, and the pure water in the film bag can only be defined
  • the pure water pipe 210 flows; the raw water generates pure water after the action of the reverse osmosis membrane 110, and the pure water is formed in the membrane bag and flows into the bag opening into the pure water pipe 210.
  • the sealing can be achieved by the operation of the film winding, and the sealing position of the two ends can also be sealed for a second time by the sealing effect of the sealing glue of the first end cover 300 and the second end cover 400, thereby achieving better sealing. Sealing effect.
  • the number of the waste water pipes 220 is N, N is greater than or equal to 3; the cross section of the pure water pipe 210 is N sides.
  • the plurality of side surfaces are disposed on the side surface 212, and each of the side surfaces 212 is provided with the pure water inlet hole 211; and each of the waste water pipes 220 is disposed corresponding to a position of the side surface 212.
  • the side of each of the waste water pipes 220 facing the side surface 212 may be a flat surface for facilitating the penetration and winding of the reverse osmosis membrane group 100.
  • the cross section of the pure water pipe 210 is substantially in the shape of a regular pentagon, corresponding to five side surfaces 212, each of the waste water pipes. 220 corresponds to the positional setting of one of the side surfaces 212. This arrangement ensures that each of the waste water pipes 220 individually corresponds to one side surface 212 of the pure water pipe 210, and does not interfere with each other during the film winding operation, facilitating the operation of the film winding.
  • the pure water produced by the reverse osmosis membrane group 100 corresponding to each of the waste water pipes 220 can be collected into the pure water pipe 210 in time, it is preferable to provide a plurality of the pure ones on each of the side surfaces 212.
  • the water enters the water hole 211, and a plurality of the pure water inlet holes 211 are evenly arranged along the length direction of the pure water pipe 210, whereby the pure water at each position can quickly flow to the near pure water into the water.
  • each of the waste water pipes 220 is spaced apart from the internal passage of the waste water inlet hole 221 into the waste water pipe 220, and a plurality of the waste water inlet holes 221 are along The length direction of the waste water pipe 220 is evenly arranged, so that the waste water at each position can be quickly flowed into the internal passage of the waste water inlet hole 221 into the waste water pipe 220.
  • the pure water pipe 210' has a circular cross section, and the peripheral wall of the pure water pipe 210' corresponds to a plurality of the waste pipes along the circumferential direction thereof.
  • the 220' is divided into a plurality of curved surface segments 213, and each of the curved surface segments 213 is provided with the pure water inlet holes (not shown); each of the waste water pipes 220' corresponds to one of the curved surface segments Position setting of 213.
  • the number of the waste water pipes 220' is six, and the peripheral wall of the pure water pipe 210' is divided into six arc surface segments 213 corresponding to the plurality of the waste water pipes 220' in the circumferential direction thereof, and each of the waste water pipes 220' corresponds to the position setting of one of the arcuate segments 213.
  • This arrangement ensures that each of the waste water pipes 220' individually corresponds to a curved surface section 213 of the pure water pipe 210', and does not interfere with each other during the film winding operation, facilitating the operation of the film winding.
  • each waste water pipe 220' In order to ensure that the pure water produced by the reverse osmosis membrane group 100 corresponding to each waste water pipe 220' can be collected into the pure water pipe 210' in time, it is preferable to provide a plurality of intervals on each of the curved surface segments 213.
  • the pure water enters a water hole (not shown), and a plurality of the pure water inlet holes are evenly arranged along the length direction of the pure water pipe 210', whereby the pure water at each position can flow rapidly To the nearest pure water inlet hole; in order to be able to remove the waste water in time, each of the waste water pipes 220' is spaced apart from a plurality of the waste water inlet holes (not shown) into the internal passage of the waste water pipe 220'. And a plurality of the wastewater water inlet holes are evenly arranged along the length direction of the waste water pipe 220', so that the wastewater at each position can be quickly flowed into the internal passage of the near waste water inlet hole into the waste water pipe 2
  • the pure water pipe 210 and the plurality of the waste water pipes 220 may be combined to form a cylindrical shape; when the film is wound, the central pipe group 200 is relatively uniform when rotated, is not prone to skew, and is rolled up at the same time.
  • the appearance of the article will also be relatively uniform, facilitating the mounting of the rolled product into the housing of the spiral wound reverse osmosis membrane element 700, and also facilitating the alignment of the end cap of the spiral wound reverse osmosis membrane element 700 with the rolled product. And sealed.
  • a waste water guiding groove is opened on the peripheral wall of the waste water pipe 220. 222.
  • the wastewater inlet hole 221 is disposed in the waste water guiding channel 222.
  • the specific position, shape and quantity of the waste water guiding channel 222 can be selected according to the specific situation.
  • the waste water pipe 220 is provided with a plurality of waste water guiding channels 222 extending along the circumferential direction of the waste water pipe 220.
  • Each of the wastewater guiding channels 222 is provided with a wastewater inlet hole 221.
  • the wastewater guiding channel 222 has the effects of collecting water and diverting water, and can help the wastewater to enter the wastewater pipe 220 more accurately and quickly.
  • Other shapes of the waste water guiding groove 222 can also achieve the effects of water collecting and guiding, and are not further limited herein.
  • the pure water pipe 210 When the pure water pipe 210 is actually produced, since the pure water pipe 210 generally has a long length and a small radius, it is difficult to draw the core in the axial direction during production, which causes the pure water pipe 210 to be mass-produced in a rapid manner, in order to solve this problem.
  • the first retaining opening 214 extending along the length of the pure water pipe 210 is opened on the peripheral wall of the pure water pipe 210 to produce the pure water pipe.
  • the entire inner slide can be split into upper, middle and lower three sliders. The middle slide can be pulled laterally through the first letment opening 214, and the upper and lower slides can be respectively pulled through the nozzles at both ends.
  • the first yielding opening 214 can also function as a pure water inlet hole for the pure water to pass into the internal passage of the pure water pipe 210. Since the entire outer peripheral wall of the pure water pipe 210 is pressed at the time of winding the film, in order to prevent the film from being deformed at the first yielding opening 214 after being pressed, the first insufficiency is caused.
  • a first reinforcing rib 215 is disposed in the opening 214 , and two ends of the first reinforcing rib 215 are respectively connected to different two sides of the first letting opening 214 .
  • the diaphragm of the reverse osmosis membrane group 100 is supported by the first rib 215, and the diaphragm crush of the reverse osmosis membrane group 100 can be effectively prevented.
  • the first reinforcing rib 215 extends along the length direction, and the two ends of the first reinforcing rib 215 are respectively connected to the two short sides of the first letting opening 214; obviously, the first reinforcing rib 215 is not disposed.
  • the specific number, position, and shape of the first reinforcing rib 215 are all applicable to the technical solution of the present invention as long as it can be applied to the technical solution of the present invention as long as it can be supported without affecting the water passage and does not affect the production molding. It can be selected according to actual needs, and will not be described here.
  • the circumferential wall of the waste water pipe 220 is opened along the length of the waste water pipe 220.
  • the second yielding opening 223 reduces the production difficulty of the waste water pipe 220, and is beneficial to the rapid mass production of the waste water pipe 220.
  • the second yielding opening 223 can also function as a waste water inlet hole 221 for the wastewater to pass into the internal passage of the waste water pipe 220.
  • the second yielding opening 223 is disposed in the waste water pipe 220 toward the pure water pipe 210, so that the diaphragm at the waste water pipe 220 is deformed at the second retaining opening 223 to cause crushing. On one side, this position is relatively small and is not susceptible to damage.
  • a second reinforcing rib 224 is further disposed in the second retaining opening 223, and two ends of the second reinforcing rib 224 are respectively connected to different two sides of the second retaining opening 223.
  • Supporting the diaphragm of the reverse osmosis membrane group 100 by the second reinforcing rib 224 can effectively prevent the membrane of the reverse osmosis membrane group 100 from being pressed into the first yielding opening 214 during the filtration process, thereby causing crushing, thereby causing The problem of the reduction of the salt rejection rate; as long as the second reinforcement rib 224 structure capable of achieving the support, not affecting the water passage and not affecting the production molding can be applied to the technical solution of the present invention, the specific number and position of the second reinforcement rib 224
  • the shapes and shapes can be selected according to actual needs, and will not be described here.
  • the present invention further provides a filter cartridge including a housing 900, a waterway converter 800, and a spiral wound reverse osmosis membrane element 700.
  • the specific structure of the spiral wound reverse osmosis membrane element 700 is referred to the above embodiment. Since all the technical solutions of all the above embodiments are adopted, the present invention also has all the beneficial effects brought about by the technical solutions of the foregoing embodiments, and details are not described herein again.
  • the spiral wound reverse osmosis membrane element 700 is housed in the casing 900; the waterway converter 800 is provided with two independent waterways, one of which is connected to the waste water discharge outlet 310, and the other One of the water passages communicates with the pure water discharge port 320.
  • the housing 900 includes a receiving portion 910 and a filter head 920 disposed on the receiving portion 910.
  • the second end cover 400 of the spiral rolled reverse osmosis membrane element 700 extends inwardly into the receiving portion 910.
  • the waterway converter 800 is mounted between the first end cap 300 and the filter head 920.
  • the present invention also provides a reverse osmosis water purifier, the reverse osmosis water purifier comprising a filter element, the specific structure of the filter element is referred to the above embodiment, and since the reverse osmosis water purifier adopts all the technical solutions of all the above embodiments, All the beneficial effects brought about by the technical solutions of the above embodiments are not repeated here.

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  • 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

L'invention concerne un élément de membrane d'osmose inverse enroulé en spirale (700), un élément de filtre et un purificateur d'eau d'osmose inverse. L'élément de membrane d'osmose inverse enroulé en spirale (700) comprend: un ensemble de membranes d'osmose inverse à feuilles multiples (100), un ensemble de tubes centraux (200), un premier capuchon d'extrémité (300) et un second capuchon d'extrémité (400). L'ensemble de tubes centraux (200) comprend un tube d'eau pure (210) et une pluralité de tubes d'eaux usées (220) qui sont disposés à intervalles les uns par rapport aux autres, et la pluralité de tubes d'eaux usées (220) sont disposés autour du tube d'eau pure (210). Chaque ensemble de membranes d'osmose inverse (100) a une première partie située dans l'ensemble de tubes centraux (200) et une seconde partie située à l'extérieur de l'ensemble de tubes centraux (200), et chacun des tubes d'eaux usées (220) et le tube d'eau pure (210) sont séparés par la première partie d'un ensemble de membranes d'osmose inverse (100); la seconde partie de la pluralité de l'ensemble de membranes d'osmose inverse (100) forme un ensemble membrane multicouche entourant le groupe de tubes centraux (200). Le premier capuchon d'extrémité (300) et le second capuchon d'extrémité (400) sont respectivement gainés sur les deux extrémités de l'ensemble de tubes centraux (200) et de l'ensemble de membranes d'osmose inverse à feuilles multiples (100). L'ensemble de tubes centraux (200) correspondant au premier capuchon d'extrémité (300) ou au second capuchon d'extrémité (400) est pourvu d'une sortie d'eau pure (320) et d'une sortie d'eau usée (310).
PCT/CN2016/113101 2016-08-26 2016-12-29 Élément de membrane d'osmose inverse enroulé en spirale, élément de filtre et purificateur d'eau d'osmose inverse WO2018036064A1 (fr)

Priority Applications (1)

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US16/286,540 US11077406B2 (en) 2016-08-26 2019-02-26 Central tube set, spiral wound reverse osmosis membrane component, and reverse osmosis water purifier

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CN201610743900.4A CN106110894B (zh) 2016-08-26 2016-08-26 螺旋卷式反渗透膜元件、滤芯和反渗透净水器
CN201610743900.4 2016-08-26

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PCT/CN2016/113094 Continuation WO2018036063A1 (fr) 2016-08-26 2016-12-29 Élément de membrane d'osmose inverse enroulée en spirale, procédé de membrane enroulée de celui-ci et purificateur d'eau à osmose inverse

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CN110508144A (zh) * 2019-09-20 2019-11-29 珠海格力电器股份有限公司 反渗透组件、反渗透过滤器和净水系统
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CN111115879A (zh) * 2018-10-31 2020-05-08 佛山市顺德区美的饮水机制造有限公司 净水系统
CN111115864A (zh) * 2018-10-31 2020-05-08 佛山市顺德区美的饮水机制造有限公司 复合滤芯组件
CN110357215B (zh) * 2019-08-22 2023-05-26 吴红平 并联式双水质膜元件及其加工方法
CN110357215A (zh) * 2019-08-22 2019-10-22 吴红平 并联式双水质膜元件及其加工方法
CN110508144A (zh) * 2019-09-20 2019-11-29 珠海格力电器股份有限公司 反渗透组件、反渗透过滤器和净水系统
CN110508143A (zh) * 2019-09-20 2019-11-29 珠海格力电器股份有限公司 M型卷式反渗透膜元件及其制作方法和净水系统
CN110508143B (zh) * 2019-09-20 2023-10-03 珠海格力电器股份有限公司 M型卷式反渗透膜元件及其制作方法和净水系统
CN113651442A (zh) * 2021-09-16 2021-11-16 佛山市顺德区盈沣泰环保科技有限公司 一种使用出水支架的净水装置
CN113651442B (zh) * 2021-09-16 2024-04-30 佛山市顺德区盈沣泰环保科技有限公司 一种使用出水支架的净水装置
CN114259873A (zh) * 2021-12-28 2022-04-01 佛山市麦克罗美的滤芯设备制造有限公司 多膜页反渗透膜元件卷制方法
WO2023179012A1 (fr) * 2022-03-25 2023-09-28 珠海格力电器股份有限公司 Élément de filtre à étages, ensemble élément de filtre à étages, dispositif de purification d'eau, et système de purification d'eau
CN115782140A (zh) * 2022-11-28 2023-03-14 珠海格力电器股份有限公司 反渗透膜组件制作方法及反渗透膜元件、净水机
CN116199306A (zh) * 2023-03-03 2023-06-02 陕西化工研究院有限公司 一种低浓度盐水的低压低成本高浓缩反渗透工艺

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