CN221191731U - Reverse osmosis membrane waterway switching structure and water purifier - Google Patents
Reverse osmosis membrane waterway switching structure and water purifier Download PDFInfo
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- CN221191731U CN221191731U CN202322799274.9U CN202322799274U CN221191731U CN 221191731 U CN221191731 U CN 221191731U CN 202322799274 U CN202322799274 U CN 202322799274U CN 221191731 U CN221191731 U CN 221191731U
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- reverse osmosis
- osmosis membrane
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 257
- 239000012528 membrane Substances 0.000 title claims abstract description 205
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 200
- 239000002351 wastewater Substances 0.000 claims description 47
- 239000008213 purified water Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000008399 tap water Substances 0.000 abstract description 2
- 235000020679 tap water Nutrition 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- MPOKJOWFCMDRKP-UHFFFAOYSA-N gold;hydrate Chemical compound O.[Au] MPOKJOWFCMDRKP-UHFFFAOYSA-N 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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 utility model relates to the technical field of reverse osmosis water purifiers, and discloses a reverse osmosis membrane waterway switching structure and a water purifier. According to the utility model, the pressure relief pipeline is connected between the water producing end and the water inlet end of each reverse osmosis membrane unit, and the pressure relief valve is arranged on the pressure relief pipeline, so that pure water can be refluxed, the reverse osmosis membrane is filled with mixed water of pure water and tap water, the risk of the reverse osmosis membrane structure is reduced, and the service life of the reverse osmosis membrane is prolonged. Meanwhile, when water is prepared next time, the TDS value of the first cup of water is reduced, and user experience is improved. In addition, when the whole machine heats, only 400ml/min of water is theoretically needed, when the water yield of the system is larger than the flow, pure water can be returned through the pressure release valve, the pipeline pressure of the pure water pipe is reduced, namely the water inlet pressure of the heating module is stabilized, and the heating system is stabilized.
Description
Technical Field
The utility model relates to the technical field of reverse osmosis water purifiers, in particular to a reverse osmosis membrane waterway switching structure and a water purifier.
Background
At present, in the use process of a Reverse Osmosis (RO) membrane, the surface pressure of the RO membrane gradually decreases from water inlet to water outlet, the concentration of wastewater is gradually increased, the water yield is gradually decreased, and the tail end is at risk of scaling and blocking. The utilization rate of the whole RO membrane is uneven, and finally the RO membrane is replaced after the service life is ended. Increasing consumer burden.
The Chinese patent application with the publication number of CN 105217732A discloses a reverse osmosis membrane pile structure with a variable water inlet direction, which comprises a water inlet valve, a reverse water inlet valve, a water inlet pipe and a concentrated water pipe which are connected with the membrane pile in parallel, wherein the water inlet valve is connected with the water inlet pipe, the water inlet pipe is connected with the reverse concentrated water valve, the reverse concentrated water valve is connected with a reversing pipe, the reverse water inlet valve is connected with the concentrated water pipe, and the concentrated water pipe is connected with the concentrated water valve. The invention adopts the alternate water inlet technology, which can reduce the running cost to a certain extent and prolong the service life of the RO membrane. However, the serial-parallel connection mode of each RO membrane is fixed, so that uniform utilization of each RO membrane is difficult to achieve, and the life extension effect of the RO membrane is not ideal.
Disclosure of utility model
The utility model aims to provide a reverse osmosis membrane waterway switching structure with better RO membrane service life prolonging effect, which at least provides a beneficial selection or creation condition for solving one or more technical problems existing in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
The utility model provides a reverse osmosis membrane waterway switching structure, includes a plurality of reverse osmosis membrane units that the equipment is in the same place, wherein, is connected with the pressure release pipeline between the water producing end and the water inlet end of each reverse osmosis membrane unit be equipped with the relief valve on the pressure release pipeline.
More preferably, a water inlet pump is connected to the water inlet end of each reverse osmosis membrane unit, and the pressure relief pipeline is connected to the water inlet end of the water inlet pump. Preferably, the water inlet pump is one, and can simultaneously provide water inlet pressure for each reverse osmosis membrane unit.
More preferably, a waste water return pipeline is connected between the concentrated water end and the water inlet end of each reverse osmosis membrane unit, and a waste water proportional valve is connected to the waste water return pipeline.
More preferably, a water inlet pump is connected to the water inlet end of each reverse osmosis membrane unit, and the wastewater return line is connected to the water inlet end of the water inlet pump.
More preferably, the number of the reverse osmosis membrane units is at least two, and each reverse osmosis membrane unit forms a parallel structure; raw water of the total water inlet pipeline simultaneously flows through the reverse osmosis membrane units which are connected in parallel through the water inlet ends of the reverse osmosis membrane units, and then purified water and concentrated water are output from the reverse osmosis membrane units.
More preferably, water inlet valves are connected to the water inlet ends of at least two reverse osmosis membrane units, the concentrated water end of the reverse osmosis membrane unit provided with a water inlet valve is connected with a waste water pipe through a concentrated water on-off pipeline, and flows to the other reverse osmosis membrane unit provided with a water inlet valve in a unidirectional way through a unidirectional pipeline to form a serial-parallel connection selection structure.
More preferably, the number of the reverse osmosis membrane units is at least two, each reverse osmosis membrane unit forms a series structure, and water flows through each reverse osmosis membrane unit in turn.
More preferably, the raw water of the total water inlet pipeline is respectively connected to the water inlet end of the first reverse osmosis membrane unit and the concentrated water end of the last reverse osmosis membrane unit through two water inlet pipes, and the two water inlet pipes are respectively provided with corresponding water inlet valves; the water inlet end of the first reverse osmosis membrane unit and the concentrated water end of the last reverse osmosis membrane unit are respectively connected with the waste water pipe through corresponding concentrated water on-off pipelines.
More preferably, the reverse osmosis membrane unit is one, raw water of the total water inlet pipeline is respectively connected to the water inlet end and the concentrated water end of the reverse osmosis membrane unit through two water inlet pipes, the two water inlet pipes are respectively provided with corresponding water inlet valves, and the water inlet end and the concentrated water end of the reverse osmosis membrane unit are respectively connected with the waste water pipe through corresponding concentrated water on-off pipelines.
On the other hand, the utility model also provides a water purifier, which is provided with the reverse osmosis membrane waterway switching structure.
The technical scheme provided by the utility model has at least the following technical effects or advantages.
1. Through connect the pressure release pipeline between the water producing end and the water inlet end of each reverse osmosis membrane unit to set up the relief valve on the pressure release pipeline, can flow back pure water, make the reverse osmosis membrane be full of the mixed water of pure water + running water, reduce reverse osmosis membrane structure risk, extension reverse osmosis membrane life. Meanwhile, when water is prepared next time, the TDS value of the first cup of water is reduced, and user experience is improved. In addition, when the whole machine heats, only 400ml/min of water is theoretically needed, when the water yield of the system is larger than the flow, pure water can be returned through the pressure release valve, the pipeline pressure of the pure water pipe is reduced, namely the water inlet pressure of the heating module is stabilized, and the heating system is stabilized.
2. The pressure release pipeline and the waste water return pipeline are combined, and when the TDS is good, the waste water is returned to the RO membrane, namely, the concentrated water is reused, so that the discharge of the concentrated water can be reduced, and the recovery rate of the whole machine is improved. When the whole machine heats, the waste water can be returned to the front of the water inlet pump through the waste water return pipeline, so that the surface flow velocity of the membrane is improved, and the risk of membrane blockage is reduced; meanwhile, the pressure of the gold water pump behind the gold water pump is reduced, the load of the gold water pump is reduced, and the noise of the gold water pump is reduced.
Drawings
Fig. 1 is a schematic diagram of a reverse osmosis membrane waterway switching structure provided in embodiment 1 of the present utility model.
Fig. 2 is a schematic diagram of a reverse osmosis membrane waterway switching structure provided in embodiment 2 of the present utility model.
Fig. 3 is a schematic diagram of a reverse osmosis membrane waterway switching structure provided in embodiment 3 of the present utility model.
Fig. 4 is a schematic diagram of a reverse osmosis membrane waterway switching structure provided in embodiment 4 of the present utility model.
Fig. 5 is a schematic diagram of a reverse osmosis membrane waterway switching structure provided in embodiment 5 of the present utility model.
Fig. 6 is a schematic diagram of a reverse osmosis membrane waterway switching structure provided in embodiment 6 of the present utility model.
Reference numerals illustrate.
1: A first reverse osmosis membrane unit, 2: a second reverse osmosis membrane unit, 3: third reverse osmosis membrane unit, 4: first water inlet valve, 5: second water inlet valve, 6: first unidirectional pipeline, 7: second unidirectional pipeline, 8: normally closed valve, 9: waste pipe, 10: waste water valve, 11: total water inlet line, 12: pressure release pipeline, 13: relief valve, 14: third water inlet valve, 15: third unidirectional pipe, 16: intake pump, 17: waste water return line, 18: waste water proportional valve, 19: first normally closed valve, 20: water inlet branch, 21: fourth inlet valve, 22: fifth inlet valve, 23: concentrated water branch, 24: and a second normally closed valve.
Detailed Description
The following description of the specific embodiments of the present utility model is further provided with reference to the accompanying drawings, so that the technical scheme and the beneficial effects of the present utility model are more clear and definite. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, or may be learned by practice of the utility model.
Example 1
Referring to fig. 1, a reverse osmosis membrane waterway switching structure of a water purifier includes a first reverse osmosis membrane unit 1, a second reverse osmosis membrane unit 2 and a third reverse osmosis membrane unit 3 connected in parallel; a first water inlet valve 4 and a second water inlet valve 5 are respectively arranged at the water inlet ends of the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3; the concentrated water of the first reverse osmosis membrane unit 1 and the second reverse osmosis membrane unit 2 flows into the water inlet end of the third reverse osmosis membrane unit 3 in one way through a first unidirectional pipeline 6, and the water outlet end of the first unidirectional pipeline 6 is connected to the water outlet side of the second water inlet valve 5; the concentrated water of the first reverse osmosis membrane unit 1 and the third reverse osmosis membrane unit 3 flows into the water inlet end of the second reverse osmosis membrane unit 2 in one way through a second unidirectional pipeline 7, and the water outlet end of the second unidirectional pipeline 7 is connected to the water outlet side of the first water inlet valve 4; a pressure relief pipeline 12 is connected between the water producing ends of the first reverse osmosis membrane unit 1, the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 and the total water inlet pipeline 11, and a pressure relief valve 13 is arranged on the pressure relief pipeline 12.
It should be noted that the unidirectional flow of the water flow in the unidirectional pipeline is controlled by a plurality of unidirectional valves, and the specific structural form of the unidirectional pipeline and the number and the position of the unidirectional valves in the unidirectional pipeline are common technical knowledge known to those skilled in the art, and are not described in detail herein.
During operation, the first reverse osmosis membrane unit 1 and the second reverse osmosis membrane unit 2 can be conveniently connected in parallel and then connected with the third reverse osmosis membrane unit 3 in series by controlling the on-off combination of the first water inlet valve 4 and the second water inlet valve 5, or the first reverse osmosis membrane unit 1 and the third reverse osmosis membrane unit 3 are connected in parallel and then connected with the second reverse osmosis membrane unit 2 in series, or the first reverse osmosis membrane unit 1, the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 are connected in parallel. In the case of poor water quality, it is preferable to perform water quality purification by adopting a parallel structure of the first reverse osmosis membrane unit 1, the second reverse osmosis membrane unit 2, and the third reverse osmosis membrane unit 3.
Like this, through changing the serial-parallel connection position of first reverse osmosis membrane unit 1, second reverse osmosis membrane unit 2 and third reverse osmosis membrane unit 3, can effectively balance the life-span of second reverse osmosis membrane unit 2 and third reverse osmosis membrane unit 3, solve reverse osmosis membrane use in-process, the inhomogeneous problem of utilization ratio makes reverse osmosis membrane evenly consume the life-span, accomplishes reverse osmosis membrane long-term use, reduces the user and trades core cost.
In particular, to ensure the normal operation of the waterway switching, it is preferable that the concentrate ends of the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 are respectively connected with a waste water pipe 9 through corresponding concentrate pipelines with normally closed valves 8, and a waste water valve 10 is provided on the waste water pipe 9.
In the embodiment, the pressure release pipeline 12 and the pressure release valve 13 are arranged, so that when the whole machine heats, only 400ml/min of water is theoretically needed, and during the heating process, when the water yield of the system is greater than the flow, pure water can be returned through the pressure release pipeline 12 and the pressure release valve 13, and the pressure of the pure water pipe pipeline is reduced; namely, the water inlet pressure of the heating module is stabilized, so that the heating system is stabilized. In addition, by adopting the design of the pure water reflux structure, the water inlet end can be used as mixed water of pure water and tap water, so that the structural risk of the reverse osmosis membrane is reduced, the service life of the reverse osmosis membrane is prolonged, and meanwhile, the TDS value of first water is reduced and the user experience is improved when water is prepared next time.
Example 2
Referring to fig. 2, the reverse osmosis membrane waterway switching structure of the water purifier provided in this embodiment is basically identical to that of embodiment 1, and is different in that a third water inlet valve 14 is provided at the water inlet end of the first reverse osmosis membrane unit 1, the concentrated water ends of the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 flow into the water inlet end of the first reverse osmosis membrane unit 1 in one direction through a third unidirectional pipeline 15, and the water outlet end of the third unidirectional pipeline 15 is connected to the water outlet side of the first water inlet valve 14; the concentrated water end of the first reverse osmosis membrane unit 1 is connected with a waste water pipe 9 through a corresponding normally closed valve 8.
In this way, the first reverse osmosis membrane unit 1 can be connected in series after the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 are connected in parallel by changing the serial-parallel connection positions of the first reverse osmosis membrane unit 1, the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3. Compared with the embodiment 1, the embodiment can better and evenly consume the service life of each reverse osmosis membrane, realize long-term use and ultra-long membrane service life, has the advantages of no core replacement and high waste water ratio in 10 years, and the waste water ratio is started to be 3:1, limit can reach 5:1.
Example 3
Referring to fig. 3, the reverse osmosis membrane waterway switching structure of the water purifier provided in this embodiment is basically identical to that of embodiment 1, except that the first reverse osmosis membrane unit 1, the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 are in a series structure, the first reverse osmosis membrane unit 1 enters the second reverse osmosis membrane unit 2, and the concentrate of the second reverse osmosis membrane unit 2 enters the third reverse osmosis membrane unit 3; the two water inlet pipes are respectively connected with the water inlet end of the first reverse osmosis membrane unit 1 and the concentrated water end of the third reverse osmosis membrane unit 3, and the two water inlet pipes are respectively provided with corresponding water inlet valves; the water inlet end of the first reverse osmosis membrane unit 1 and the concentrated water end of the third reverse osmosis membrane unit are respectively connected with a waste water pipe 9 through corresponding normally closed valves 8, and a waste water valve 10 is arranged on the waste water pipe 9.
According to the reverse osmosis membrane waterway switching structure of the water purifier, when the reverse osmosis membrane waterway switching structure is in operation, the first reverse osmosis membrane unit 1, the second reverse osmosis membrane unit 2 and the third reverse osmosis membrane unit 3 can be connected in series, the third reverse osmosis membrane unit 3, the second reverse osmosis membrane unit 2 and the first reverse osmosis membrane unit 1 can be connected in series, the first reverse osmosis membrane unit 1 and the third reverse osmosis membrane unit 3 can be sequentially exchanged, meanwhile, the water inlet and outlet directions of each membrane are exchanged, the service lives of the reverse osmosis membranes are uniformly consumed, and long-acting is achieved.
Example 4
Referring to fig. 4, a reverse osmosis membrane waterway switching structure of a water purifier includes a first reverse osmosis membrane unit 1 and a second reverse osmosis membrane unit 2 connected in parallel, wherein water producing ends of the first reverse osmosis membrane unit 1 and the second reverse osmosis membrane unit 2 are connected to a water inlet end of a water inlet pump 16 through a pressure relief pipeline 12, and a pressure relief valve 13 is arranged on the pressure relief pipeline 12; the concentrated water ends of the first reverse osmosis membrane unit 1 and the second reverse osmosis membrane unit 2 are connected to the water inlet end of a water inlet pump 16 through a waste water return pipeline 17, and a waste water proportional valve 18 is arranged on the waste water return pipeline 17.
The reverse osmosis membrane waterway switching structure of the water purifier provided by the embodiment can return waste water to the reverse osmosis membrane when TDS is good through the arrangement of the waste water return pipeline 17 and the waste water proportional valve 18, namely, the secondary utilization of the concentrated water can reduce the discharge of the concentrated water, and the recovery rate of the whole machine is improved. In addition, when the whole machine heats, only 400ml/min of water is theoretically needed, and when the reverse osmosis membrane system is larger than the flow, the wastewater can be returned to the front of the water inlet pump through the wastewater proportional valve, so that the surface flow rate of the membrane is improved, and the risk of membrane blockage is reduced; meanwhile, the pressure behind the water inlet pump is reduced, the load of the water inlet pump is reduced, and the noise of the whole machine is reduced.
Example 5
Referring to fig. 5, the reverse osmosis membrane waterway switching structure of the water purifier provided in this embodiment is basically identical to that of embodiment 4, and is different in that respective water inlet valves are provided at the water inlet ends of the first reverse osmosis membrane unit 1 and the second reverse osmosis membrane unit 2, the concentrated water of the first reverse osmosis membrane unit 1 flows into the water inlet end of the second reverse osmosis membrane unit 2 through respective unidirectional pipelines, and the concentrated water of the second reverse osmosis membrane unit 2 flows into the water inlet end of the first reverse osmosis membrane unit 1 through unidirectional pipelines; the concentrated water end of the first reverse osmosis membrane unit 1 and the concentrated water end of the second reverse osmosis membrane unit 2 are respectively connected with a waste water pipe 9 through corresponding normally closed valves 8, and a waste water valve 10 is arranged on the waste water pipe 9.
Compared with embodiment 4, the reverse osmosis membrane waterway switching structure of the water purifier can realize the parallel connection of two reverse osmosis membranes and the serial connection in the forward and reverse directions, so that the service lives of the two reverse osmosis membranes are balanced, and the service lives are uniformly consumed.
Example 6
Referring to fig. 6, a reverse osmosis membrane waterway switching structure of a water purifier includes a first reverse osmosis membrane unit 1, a water inlet pump 16 and a fourth water inlet valve 21 are connected to a water inlet end of the first reverse osmosis membrane unit 1, and the fourth water inlet valve 21 is connected to a water outlet end of the water inlet pump 16; the water producing end of the first reverse osmosis membrane unit 1 is connected to the water inlet end of the water inlet pump 16 through a pressure relief pipeline 12, and a pressure relief valve 13 is arranged on the pressure relief pipeline 12; the concentrated water end of the first reverse osmosis membrane unit 1 is connected to the water inlet end of the water inlet pump 16 through a waste water return pipeline 17, and a waste water proportional valve 18 is arranged on the waste water return pipeline 17; a first normally closed valve 19 and a water inlet branch 20 are connected to the concentrated water end of the first reverse osmosis membrane unit 1, one end of the water inlet branch 20 is connected between the first normally closed valve 19 and the concentrated water end of the first reverse osmosis membrane unit 1, the other end is connected between the water inlet pump 16 and the fourth water inlet valve 21, and a fifth water inlet valve 22 is arranged on the water inlet branch 20; a concentrated water branch 23 is connected to the water inlet end of the first reverse osmosis membrane unit 1, one end of the concentrated water branch is connected between the water inlet end of the first reverse osmosis membrane unit 1 and the fourth water inlet valve 21, the other end of the concentrated water branch is connected with one side, away from the first reverse osmosis membrane unit 1, of the first normally closed valve 19, and a second normally closed valve 24 is arranged on the concentrated water branch 23.
The reverse osmosis membrane waterway switching structure of the water purifier provided by the embodiment not only has the effects of concentrated water backflow and produced water pressure relief, but also realizes forward and reverse water inflow of a single reverse osmosis membrane, so that the service lives of the front section and the rear section of the single reverse osmosis membrane are uniformly consumed, and the service life of the single reverse osmosis membrane is prolonged.
It should be noted that, the normally closed valve in the embodiments of the present utility model may be replaced by other types of on-off valves that are known in the prior art or can be implemented in the future; the waste water proportional valve and the pressure relief valve are all existing valve structures, and the specific construction of the waste water proportional valve and the pressure relief valve is common technical knowledge mastered by a person skilled in the art.
It should be further noted that, in the description of the present utility model, terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. refer to the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such features, and in the description of the utility model, "at least" means one or more, unless clearly specifically defined otherwise.
In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "below," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply representing the first feature as having a higher level than the second feature. The first feature being "above," "below," and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or simply indicating that the first feature is level below the second feature.
It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present utility model is not limited to the specific embodiments described above, but is intended to cover modifications and alternatives falling within the spirit and scope of the utility model as defined by the appended claims and their equivalents. The portions of the detailed description that are not presented are all prior art or common general knowledge.
Claims (5)
1. The reverse osmosis membrane waterway switching structure comprises a plurality of reverse osmosis membrane units which are assembled together, and is characterized in that a pressure relief pipeline is connected between a water producing end and a water inlet end of each reverse osmosis membrane unit, and a pressure relief valve is arranged on the pressure relief pipeline;
The number of the reverse osmosis membrane units is at least two, and each reverse osmosis membrane unit forms a parallel structure; raw water of a total water inlet pipeline simultaneously flows through the reverse osmosis membrane units which are connected in parallel through the water inlet ends of the reverse osmosis membrane units, and purified water and concentrated water are output from the reverse osmosis membrane units; the water inlet ends of at least two reverse osmosis membrane units are connected with water inlet valves, the concentrated water end of the reverse osmosis membrane unit provided with the water inlet valves is connected with a waste water pipe through a concentrated water on-off pipeline, and flows to the other reverse osmosis membrane unit provided with the water inlet valves in a unidirectional way through a unidirectional pipeline to form a serial-parallel connection selection structure;
Or, the number of the reverse osmosis membrane units is at least two, each reverse osmosis membrane unit forms a serial structure, and water flows through each reverse osmosis membrane unit in sequence; raw water of the total water inlet pipeline is respectively connected to the water inlet end of the first reverse osmosis membrane unit and the concentrated water end of the last reverse osmosis membrane unit through two water inlet pipes, and the two water inlet pipes are respectively provided with corresponding water inlet valves; the water inlet end of the first reverse osmosis membrane unit and the concentrated water end of the last reverse osmosis membrane unit are respectively connected with the waste water pipe through corresponding concentrated water on-off pipelines;
Or the reverse osmosis membrane unit is one, raw water of the total water inlet pipeline is respectively connected to the water inlet end and the concentrated water end of the reverse osmosis membrane unit through two water inlet pipes, the two water inlet pipes are respectively provided with corresponding water inlet valves, and the water inlet end and the concentrated water end of the reverse osmosis membrane unit are respectively connected with the waste water pipe through corresponding concentrated water on-off pipelines.
2. The reverse osmosis membrane waterway switching structure according to claim 1, wherein a water inlet pump is connected to a water inlet end of each reverse osmosis membrane unit, and the pressure relief pipeline is connected to a water inlet end of the water inlet pump.
3. The reverse osmosis membrane waterway switching structure according to claim 1, wherein a wastewater return line is connected between a concentrated water end and a water inlet end of each reverse osmosis membrane unit, and a wastewater proportional valve is connected to the wastewater return line.
4. A reverse osmosis membrane waterway switching structure according to claim 3, characterized in that a water inlet pump is connected to a water inlet end of each reverse osmosis membrane unit, and the wastewater return line is connected to a water inlet end of the water inlet pump.
5. A water purifier, characterized by comprising a reverse osmosis membrane waterway switching structure according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799274.9U CN221191731U (en) | 2023-10-18 | 2023-10-18 | Reverse osmosis membrane waterway switching structure and water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799274.9U CN221191731U (en) | 2023-10-18 | 2023-10-18 | Reverse osmosis membrane waterway switching structure and water purifier |
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| CN221191731U true CN221191731U (en) | 2024-06-21 |
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| CN202322799274.9U Active CN221191731U (en) | 2023-10-18 | 2023-10-18 | Reverse osmosis membrane waterway switching structure and water purifier |
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