CN108623038B - Reverse osmosis membrane water purification device and water purifier - Google Patents
Reverse osmosis membrane water purification device and water purifier Download PDFInfo
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- CN108623038B CN108623038B CN201710177317.6A CN201710177317A CN108623038B CN 108623038 B CN108623038 B CN 108623038B CN 201710177317 A CN201710177317 A CN 201710177317A CN 108623038 B CN108623038 B CN 108623038B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 333
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 45
- 239000012528 membrane Substances 0.000 title claims abstract description 26
- 238000000746 purification Methods 0.000 title claims description 17
- 239000002351 wastewater Substances 0.000 claims abstract description 84
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims description 18
- 238000011045 prefiltration Methods 0.000 claims description 10
- 239000008213 purified water Substances 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 1
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 159000000003 magnesium salts Chemical class 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- HIVGXUNKSAJJDN-UHFFFAOYSA-N [Si].[P] Chemical compound [Si].[P] HIVGXUNKSAJJDN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/001—Upstream control, i.e. monitoring for predictive control
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a reverse osmosis membrane water purifying device and a water purifier, wherein the reverse osmosis membrane water purifying device comprises: the reverse osmosis filter element is provided with a water inlet, a pure water outlet and a wastewater outlet; the raw water pipeline is connected with the water inlet, and a booster pump is arranged on the raw water pipeline; the pure water pipeline is connected with the pure water outlet; and the waste water pipeline is connected with the waste water outlet, a scale inhibitor module and a waste water valve are arranged in the waste water pipeline, and the scale inhibitor module is positioned between the waste water valve and the waste water outlet. The technical scheme of the invention can prevent the scale inhibitor from being contained in drinking water of users.
Description
Technical Field
The invention relates to the field of water purification, in particular to a reverse osmosis membrane water purification device and a water purifier.
Background
For the reverse osmosis water purifier water system, in order to ensure the front pressure of the reverse osmosis membrane and discharge the waste water before the membrane, the waste water valve at the waste water discharge end is generally in a small-hole structure. However, because the concentration of waste water ions in front of the reverse osmosis membrane is high, scale of calcium and magnesium salts is easily formed at the waste water valve, so that the waste water valve is blocked. In order to avoid the blockage of the waste water valve, the scale inhibitor is usually added into a front filter element of the whole water system, and the scale inhibitor in the front filter element is slowly released in the running process of the water system, so that the generation of scale at the rear end is prevented. However, because the scale inhibitor has a certain influence on human health, even if the scale inhibitor is placed in front of the reverse osmosis filter element, the scale inhibitor is difficult to completely filter out through the reverse osmosis filter element, and especially when the function of the reverse osmosis filter element is invalid, the pure water also contains the scale inhibitor, so that the harm to a user is caused.
Disclosure of Invention
The invention mainly aims to provide a reverse osmosis membrane water purifying device which aims to prevent scale inhibitors from being contained in drinking water of users.
In order to achieve the above object, the reverse osmosis membrane water purification device provided by the present invention comprises:
the reverse osmosis filter element is provided with a water inlet, a pure water outlet and a wastewater outlet;
the raw water pipeline is connected with the water inlet, and a booster pump is arranged on the raw water pipeline;
the pure water pipeline is connected with the pure water outlet; a kind of electronic device with high-pressure air-conditioning system
And the waste water pipeline is connected with the waste water outlet, a scale inhibitor module and a waste water valve are arranged in the waste water pipeline, and the scale inhibitor module is positioned between the waste water valve and the waste water outlet.
Preferably, a first one-way valve is further arranged on the waste water pipeline between the scale inhibitor module and the waste water outlet.
Preferably, the raw water pipeline is provided with a pre-filter element and a water purifying pipeline, and the booster pump is positioned between the pre-filter element and the reverse osmosis filter element; one end of the water purifying pipeline is connected between the preposed filter element and the booster pump.
Preferably, the reverse osmosis membrane water purification device further comprises a controller and a water storage pipeline, one end of the water storage pipeline is connected with the pure water pipeline, the other end of the water storage pipeline is provided with a water storage part and a first detection part, the raw water pipeline is further provided with a water inlet valve, the controller is respectively and electrically connected with the first detection part and the water inlet valve, and the controller is used for controlling the water inlet valve to be closed when the first detection part detects that the water quantity in the water storage part reaches a preset value.
Preferably, the water storage part is a pressure tank, the first detection part is a pressure switch arranged at the water inlet end of the pressure tank, and the controller is used for controlling the pressure switch to be disconnected when the pressure switch detects that the pressure in the pressure tank reaches an upper limit value.
Preferably, the water storage part is a water bag, and the pure water pipeline is further provided with a water pump, and the water pump is positioned between the water inlet end of the water storage pipeline and the water outlet end of the pure water pipeline.
Preferably, the water outlet end of the pure water pipeline is provided with a second detection part for detecting opening and closing of the water outlet end, the controller is electrically connected with the second detection part and used for controlling the water pump to be started when the second detection part detects that the water outlet end of the pure water pipeline is opened, and controlling the water pump to be closed when the second detection part detects that the water outlet end of the pure water pipeline is closed.
Preferably, the second detecting member includes a pressure switch and a second check valve, the pressure switch being located between the water outlet end of the pure water pipe and the second check valve for detecting the pressure of the water outlet end of the pure water pipe.
Preferably, a protection pipeline is further arranged on the pure water pipeline, two ends of the protection pipeline are correspondingly connected with the water inlet end and the water outlet end of the water pump, a flow limiting valve electrically connected with the controller is arranged on the protection pipeline, and the controller is used for controlling the flow limiting valve to be closed when the water outlet end of the pure water pipeline is opened and controlling the flow limiting valve to be opened when the water outlet end of the pure water pipeline is closed.
Preferably, the pure water pipeline is further provided with a third one-way valve, and the third one-way valve is positioned between the pure water outlet and the water storage pipeline.
The invention also provides a water purifier, which comprises a reverse osmosis membrane water purifying device, wherein the reverse osmosis membrane water purifying device comprises:
the reverse osmosis filter element is provided with a water inlet, a pure water outlet and a wastewater outlet;
the raw water pipeline is connected with the water inlet, and a booster pump is arranged on the raw water pipeline;
the pure water pipeline is connected with the pure water outlet; a kind of electronic device with high-pressure air-conditioning system
And the waste water pipeline is connected with the waste water outlet, a scale inhibitor module and a waste water valve are arranged in the waste water pipeline, and the scale inhibitor module is positioned between the waste water valve and the waste water outlet.
According to the invention, the scale inhibitor module is arranged in the waste water pipeline between the waste water valve and the waste water outlet, so that when waste water flows through the scale inhibitor module, the scale inhibitor in the scale inhibitor module can be slowly released and forms a soluble complex with calcium ions and magnesium ions in water so as to prevent the generation of scale such as calcium salts and magnesium salts, and the like, thereby avoiding the generation of the phenomenon that the scale adheres to the waste water valve to block the waste water valve. Meanwhile, the scale inhibitor module is arranged on the waste water pipeline, and the waste water after the effect of the scale inhibitor is directly discharged to the outside, so that the phenomenon that the pure water contains the scale inhibitor can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a reverse osmosis membrane water purification device according to an embodiment of the present invention;
FIG. 2 is a schematic view of another embodiment of the reverse osmosis membrane water purification device of the present invention;
FIG. 3 is a schematic view of a reverse osmosis membrane water purification device according to another embodiment of the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a water purifier, which comprises a shell and a reverse osmosis membrane water purifying device positioned in the shell.
In an embodiment of the present invention, as shown in fig. 1, the reverse osmosis membrane water purification apparatus includes:
a reverse osmosis cartridge 100, the reverse osmosis cartridge 100 having a water inlet a, a pure water outlet b, and a waste water outlet c;
a raw water pipeline 200 connected with the water inlet a, wherein a booster pump 230 is arranged on the raw water pipeline 200;
a pure water pipe 300 connected to the pure water outlet b; a kind of electronic device with high-pressure air-conditioning system
And the waste water pipeline 400 is connected with the waste water outlet c, a scale inhibitor module 420 and a waste water valve 430 are arranged in the waste water pipeline 400, and the scale inhibitor module 420 is positioned between the waste water valve 430 and the waste water outlet c.
The scale inhibitor module 420 includes a scale inhibitor, preferably a phosphate species, such as silicon phosphorus crystals. The scale inhibitor can separate out phosphate matters to form soluble complex with calcium and magnesium ions in water, so as to prevent the formation of scale such as calcium and magnesium salts. Of course, the scale inhibitor may be a non-phosphate substance, and the type of the scale inhibitor is not limited in the embodiment of the present invention, so long as the scale inhibitor can be a substance capable of preventing scale formation. In order to prevent the scale inhibitor from being washed away by the wastewater, the scale inhibitor module 420 further includes a filter screen, which may be in a sheet shape and disposed between the wastewater valve 430 and the scale inhibitor, so as to block the scale inhibitor from flowing out along with the wastewater, and of course, the filter screen may also enclose to form a containing cavity, and the scale inhibitor is disposed in the containing cavity.
The waste water valve 430 is preferably an electromagnetic valve or a waste water proportioner, so that the water flow in the waste water pipeline 400 can be regulated, and when the whole system is used for preparing pure water, the excessive water flow in the waste water pipeline 400 and the excessive water flow out of the waste water can be avoided, so that the water pressure at the front end of the reverse osmosis membrane is too low; when the waste water valve 430 needs to be flushed, the waste water valve 430 is preferably flushed by adjusting the waste water valve 430 to a fully open state to increase the water flow in the waste water pipeline 400.
In general, in order to perform multistage filtration on raw water, one or more pre-cartridges 210 are further provided on the raw water line 200, and one or more post-cartridges 330 are provided on the pure water line 300.
Specifically, one end of the raw water pipe 200 is connected to the water inlet a, and the other end is connected to an external water source. One end of the pure water pipe 300 is connected to the pure water outlet b, and the other end thereof protrudes out of the housing of the water purifier to provide pure water for a user. The waste water pipe 400 has one end connected to the waste water outlet c and the other end extended to the outside of the housing to discharge waste water. In a specific operation, an external water source, i.e., raw water, flows into the raw water pipeline 200, is pressurized under the action of the booster pump 230 on the raw water pipeline 200, the pressurized raw water flows to the reverse osmosis filter element 100, the reverse osmosis filter element 100 purifies the raw water to obtain pure water, the pure water flows from the pure water outlet b to the pure water pipeline 300 for drinking by a user, and the residual concentrated water filtered by the reverse osmosis filter element 100, i.e., waste water, is directly discharged through the waste water pipeline 400.
In the invention, by arranging the scale inhibitor module 420 in the waste water pipeline 400 between the waste water valve 430 and the waste water outlet c, when waste water flows through the scale inhibitor module 420, the scale inhibitor in the scale inhibitor module 420 can be slowly released and forms soluble complex with calcium and magnesium ions in water so as to prevent the generation of scale such as calcium and magnesium salts, thereby avoiding the phenomenon that the scale adheres to the waste water valve 430 to block the waste water valve 430. Meanwhile, since the scale inhibitor module 420 is disposed on the waste water pipe 400, the waste water after the effect of the scale inhibitor is directly discharged to the outside, thereby preventing the generation of the scale inhibitor contained in the pure water.
The waste water pipeline 400 is further provided with a first one-way valve 410, and the first one-way valve 410 is positioned between the scale inhibitor module 420 and the waste water outlet c to prevent waste water in the waste water pipeline 400 from flowing back into the reverse osmosis filter element 100. In this embodiment, by providing the first check valve 410, the scale inhibitor dissolved in the wastewater can be prevented from flowing back to the reverse osmosis cartridge 100, and thus pollution to the pure water can be prevented.
As shown in fig. 2, the raw water pipeline 200 is generally provided with a pre-filter 210, the pre-filter 210 is disposed between the water inlet end of the raw water pipeline 200 and the booster pump 230, so that raw water filtered by the pre-filter 210 can be primarily filtered, impurities, bacteria and the like of the raw water are greatly reduced, and the raw water can be used by a user, so that a purified water pipeline 500 is disposed between the pre-filter 210 and the booster pump 230, the purified water pipeline 500 extends out of the casing, and purified water obtained after being filtered by the pre-filter 210 can flow out through the purified water pipeline 500 for the user. Thus, the user can use the water filtered by the front filter element 210 only, and the purpose of quality-classifying water is achieved.
The reverse osmosis membrane water purification device further comprises a controller and a water storage pipeline 600, one end of the water storage pipeline 600 is connected with the pure water pipeline 300, a water storage part 610 and a first detection part 620 are arranged at the other end of the water storage pipeline 600, the raw water pipeline 200 is further provided with a water inlet valve 220, the controller is respectively and electrically connected with the first detection part 620 and the water inlet valve 220, and the controller is used for controlling the water inlet valve 220 to be closed when the first detection part 620 detects that the water volume in the water storage part 610 reaches a preset value. In this embodiment, the first detecting member 620 is configured to detect the amount of water in the water storage member 610, and specifically may detect the water pressure, the liquid level, the weight, etc. in the water storage member 610. The preset value in the preset value of the water storage member 610 may be an upper limit value or a lower limit value, for example, in some embodiments, the preset value refers to an upper limit value, that is, when the water storage member 610 stores more water or is completely full, the controller controls the water inlet valve 220 to be closed so that raw water does not flow in any more, and meanwhile, the controller is further configured to control the booster pump 230 to stop working so that the whole machine is stopped. In other embodiments, the preset value refers to a lower limit value, that is, when there is less water stored in the water storage unit 610, it indicates that the flow of raw water is faulty (for example, the water inlet valve 220 is closed or the water inlet end of the raw water pipeline 200 is not connected to an external water source, etc.), at this time, the controller controls the water inlet valve 220 to be closed, and controls the booster pump 230 to stop working, so that the whole machine is stopped, thereby facilitating the user to remove the fault. In this embodiment, by providing the water storage member 610, pure water obtained after filtration through the reverse osmosis cartridge 100 can be stored for use by a user.
The water storage member 610 may be a pressure tank, a water bag, a normal water tank, or the like, for example, in an embodiment, the water storage member 610 is a pressure tank, the first detecting member 620 is a pressure switch disposed at a water inlet end of the pressure tank, and the controller is configured to control the pressure switch to be turned off when the pressure switch detects that the pressure in the pressure tank reaches an upper limit value. Specifically, when the pressure tank is full of water, the water overflows and flows back, the pressure switch senses the pressure of the backflow and transmits the pressure to the controller, and the controller controls the pressure switch to be turned off according to the detected pressure, i.e., the connection between the water storage pipeline 600 and the pure water pipeline 300 is disconnected, so as to avoid the phenomenon that the water in the pressure tank flows back to the pure water pipeline 300 and even flows back to the reverse osmosis filter cartridge 100, and simultaneously the controller also controls the water inlet valve 220 to be closed, so that the whole system stops water inlet.
In another embodiment, referring to fig. 3 in combination, the water storage member 610 is a water bag, the pure water pipeline 300 is further provided with a water pump 320, and the water pump 320 is located between the water inlet end of the water storage pipeline 600 and the water outlet end of the pure water pipeline 300, so as to pump out pure water in the water bag when the user needs water. In this embodiment, the first detecting member 620 is a liquid level detector or a pressure sensor or a weight detector or the like provided in the water storage bag. Specifically, when the first detecting unit 620 detects that the liquid level in the water storage bag is raised to an upper limit value, or the pressure in the water storage bag is raised to an upper limit value, or the total weight of the water storage bag is up to an upper limit value (of course, a lower limit value may be reached), the controller controls the water inlet valve 220 to be closed, so that the whole system stops water inlet.
Further, in this other embodiment, the water outlet end of the pure water pipe 300 is provided with a second detecting member 340 for detecting that the water outlet end is opened and closed, and the controller is electrically connected to the second detecting member 340 and is used for controlling the water pump 320 to be turned on when the second detecting member 340 detects that the water outlet end of the pure water pipe 300 is opened, and for controlling the water pump 320 to be turned off when the second detecting member 340 detects that the water outlet end of the pure water pipe 300 is closed. In this embodiment, the second detecting member 340 may be a contact sensor or a pressure sensor, etc., that is, it senses whether the water outlet valve is opened by contacting with the water outlet valve at the water outlet end of the pure water line 300, or it determines whether the water outlet end is opened by detecting a change in the pressure of the water outlet end. Preferably, the second detecting member 340 includes a pressure switch 341 and a second check valve 342, and the pressure switch 341 is located between the water outlet end of the pure water pipe 300 and the second check valve 342, for detecting the pressure of the water outlet end of the pure water pipe 300. By providing the second check valve 342, the backflow of pure water flowing to the water outlet end of the pure water pipeline 300 is avoided, when the water outlet end is closed, the pure water continuously flows to the water outlet end, so that the pressure in the pipeline between the water outlet end and the second check valve 342 is increased, when the pressure switch 341 detects that the pressure at the water outlet end of the pure water pipeline 300 is increased, the controller controls the water pump 320 to stop working because pure water is not needed by a user.
The pure water pipeline 300 is further provided with a protection pipeline 700, two ends of the protection pipeline 700 are correspondingly communicated with a water inlet end and a water outlet end of the water pump 320, specifically, one end of the protection pipeline 700 is connected between the water pump 320 and the water storage pipeline 600, the other end of the protection pipeline 700 is connected between the water pump 320 and the second one-way valve 342, the protection pipeline 700 is provided with a flow limiting valve 710 electrically connected with a controller, and the controller is used for controlling the flow limiting valve 710 to be closed when the water outlet end of the pure water pipeline 300 is opened, and controlling the flow limiting valve 710 to be opened when the water outlet end of the pure water pipeline 300 is closed. In this embodiment, when the water outlet end of the pure water pipe 300 is opened, if the flow limiting valve 710 is opened, water pumped by the water pump 320 will flow back from the protection pipe 700 to the water inlet end of the water pump 320, so when the water outlet end of the pure water pipe 300 is opened, the flow limiting valve 710 needs to be closed; when the water outlet end of the pure water pipe 300 is closed, if the water pump 320 is still working to pump water in the water bag, the flow limiting valve 710 needs to be opened, so that the pumped water flows back into the water bag through the protection pipe 700, so as to avoid excessive water pressure in the pure water pipe 300.
In order to prevent the water in the pure water pipeline 300 from flowing back into the reverse osmosis filter element 100, a third check valve 310 is further provided on the pure water pipeline 300, and the third check valve 310 is located between the pure water outlet b and the water storage pipeline 600.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (6)
1. A reverse osmosis membrane water purification apparatus, comprising:
the reverse osmosis filter element is provided with a water inlet, a pure water outlet and a wastewater outlet;
the raw water pipeline is connected with the water inlet, and a booster pump is arranged on the raw water pipeline;
the pure water pipeline is connected with the pure water outlet; a kind of electronic device with high-pressure air-conditioning system
The waste water pipeline is connected with the waste water outlet, a scale inhibitor module and a waste water valve are arranged in the waste water pipeline, the scale inhibitor module is positioned between the waste water valve and the waste water outlet, the scale inhibitor module comprises a scale inhibitor and a filter screen for preventing the scale inhibitor from being washed away by waste water, the filter screen encloses to form a containing cavity, and the scale inhibitor is arranged in the containing cavity;
the water storage pipeline is characterized in that one end of the water storage pipeline is connected with the pure water pipeline, the other end of the water storage pipeline is provided with a water storage part and a first detection part, and the raw water pipeline is also provided with a water inlet valve;
the controller is respectively and electrically connected with the first detection piece and the water inlet valve, and is used for controlling the water inlet valve to be closed when the first detection piece detects that the water quantity in the water storage piece reaches a preset value; the water storage part is a water bag, and the pure water pipeline is also provided with a water pump, and the water pump is positioned between the water inlet end of the water storage pipeline and the water outlet end of the pure water pipeline and is used for pumping out pure water in the water bag;
the water outlet end of the pure water pipeline is provided with a second detection part for detecting the opening and closing of the water outlet end, and the controller is electrically connected with the second detection part; the pure water pipeline is also provided with a protection pipeline, two ends of the protection pipeline are correspondingly connected with the water inlet end and the water outlet end of the water pump, and the protection pipeline is provided with a flow limiting valve electrically connected with the controller;
the controller is used for controlling the water pump to be started and controlling the flow limiting valve to be closed when the second detection part detects that the water outlet end of the pure water pipeline is opened;
the controller is also used for controlling the water pump to be closed and controlling the flow limiting valve to be opened when the second detection part detects that the water outlet end of the pure water pipeline is closed.
2. The reverse osmosis membrane water purification device according to claim 1, wherein a first one-way valve is further provided between the scale inhibitor module and the wastewater outlet.
3. The reverse osmosis membrane water purification device according to claim 1, wherein the raw water pipeline is provided with a pre-filter element and a water purification pipeline, and the booster pump is positioned between the pre-filter element and the reverse osmosis filter element; the water purifying pipeline is connected between the pre-filter element and the booster pump.
4. The reverse osmosis membrane water purification apparatus according to claim 1, wherein the second detecting member comprises a pressure switch and a second check valve, the pressure switch being located between the water outlet end of the pure water pipe and the second check valve for detecting the pressure of the water outlet end of the pure water pipe.
5. The reverse osmosis membrane water purification device according to any one of claims 1 to 4, wherein a third check valve is further provided on the purified water line, and the third check valve is located between the purified water outlet and the water storage line.
6. A water purifier comprising the reverse osmosis membrane water purifier according to any one of claims 1 to 5.
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