CN214715718U - Water purification system and water purifier with same - Google Patents
Water purification system and water purifier with same Download PDFInfo
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- CN214715718U CN214715718U CN202023312123.9U CN202023312123U CN214715718U CN 214715718 U CN214715718 U CN 214715718U CN 202023312123 U CN202023312123 U CN 202023312123U CN 214715718 U CN214715718 U CN 214715718U
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- pure water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 326
- 238000000746 purification Methods 0.000 title claims abstract description 43
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 58
- 238000001914 filtration Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000011045 prefiltration Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The application discloses water purification system and have its purifier includes: a main pipeline; the reverse osmosis filter element is connected to the main pipeline and comprises a water inlet and a pure water outlet, and the water inlet is communicated with a raw water source; the water taking switch is connected to the main pipeline and communicated with the pure water outlet; the return pipeline is connected to the main pipeline, and two ends of the return pipeline are respectively communicated with the pure water outlet and the pure water inlet so as to mix the pure water into the raw water to flush the reverse osmosis filter element; only a first one-way valve is arranged on the return pipeline, and the first one-way valve is configured to be not conducted when the water taking switch is in an open state and to be kept conducted within a preset time after the water taking switch is switched to a closed state. This application is through setting up the return line, can make the pure water backward flow wash the reverse osmosis filter core to reduce the TDS difference value of reverse osmosis filter core both sides, improve quality of water, only set up a check valve can control return line's break-make on the return line simultaneously, simple structure, effectively the cost is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a purifier technical field especially relates to a water purification system and have its purifier.
[ background of the invention ]
With the improvement of public health awareness, more and more people choose to install the water purifier in own home. The reverse osmosis water purifier has the filter core of reverse osmosis filter element and its working principle is that water molecule and ionic mineral elements pass through the reverse osmosis filter element by applying certain pressure to raw water, and most of inorganic salt (including heavy metal), organic matter, bacteria, virus, etc. dissolved in water can not permeate through the reverse osmosis filter element, so that the permeated pure water and the concentrated wastewater which can not permeate through the reverse osmosis filter element are strictly separated.
The reverse osmosis filter core of present purifier is when using, when stopping system water state, and the filter core is inside to deposit water, and the reverse osmosis membrane both sides pure water in the filter core is very big with the TDS (Total dissolved solids) value difference of raw water, and the reverse osmosis membrane is the raw water that the TDS value is higher outward, is the pure water of the low TDS value after the purification in the membrane, because reverse osmosis membrane's desalination can't reach 100%.
When the purifier is operated again, the TDS value of the former section of effluent can be relatively large, and the TDS value can only decline after the purifier continues to work for a period of time. Due to the reasons, when the water purifier is shut down for a period of time and is not used, and the water purifier is started again to produce water, the TDS of the received first cup of water is too high, and the water purifier is not healthy for drinking.
[ Utility model ] content
To the weak point that exists in the above-mentioned technique, this application provides a but water purification system that backward flow washed and purifier that has it to solve the too high problem of the first cup of water TDS of traditional purifier.
In order to solve the technical problem, the technical scheme adopted by the application is as follows: a backwashable water purification system comprising: the main pipeline is used for connecting a raw water source; the reverse osmosis filter element is connected to the main pipeline and comprises a water inlet and a pure water outlet, and the water inlet is communicated with the raw water source; the water taking switch is connected to the main pipeline and communicated with the pure water outlet; the return pipeline is connected to the main pipeline, and two ends of the return pipeline are respectively communicated with the pure water outlet and the water inlet so as to mix pure water into the raw water to flush the reverse osmosis filter element; the water taking switch is arranged on the water outlet of the water purifier, and the water taking switch is arranged on the water outlet of the water purifier.
In an embodiment of the present application, the water purification system further includes a booster pump connected to the main pipeline on the side of the water inlet, and two ends of the booster pump are respectively communicated with the water inlet and the return pipeline; wherein the booster pump is configured to continue to operate for the preset time after the water intake switch is switched to the off state and then stop.
In an embodiment of the present application, the predetermined time is 20s to 40 s.
The utility model discloses still provide another kind of water purification system that can flow back and wash, include: the main pipeline is used for connecting a raw water source; the reverse osmosis filter element is connected to the main pipeline and comprises a water inlet and a pure water outlet, and the water inlet is communicated with the raw water source; the water taking switch is connected to the main pipeline and communicated with the pure water outlet; the return pipeline is connected to the main pipeline, and two ends of the return pipeline are respectively communicated with the pure water outlet and the water inlet so as to mix pure water into the raw water to flush the reverse osmosis filter element; wherein a backflow control valve is arranged at the joint of the main pipeline positioned at the water inlet side and the backflow pipeline, the backflow control valve is configured to control the raw water source to be communicated with the water inlet when the water taking switch is in an open state, and the backflow pipeline is controlled to be communicated with the water inlet within a preset time after the water taking switch is switched to a closed state.
In an embodiment of the present application, the water purification system further includes a booster pump connected to the main pipeline on the water inlet side, the booster pump being located between the reverse osmosis filter element and the backflow control valve; wherein the booster pump is configured to continue to operate for the preset time after the water intake switch is switched to the on state and the off state.
In an embodiment of the present application, the predetermined time is 20s to 40 s.
In an embodiment of the present application, only a first check valve is connected to the return line, and the first check valve is configured to prevent raw water from flowing from the return line to the pure water outlet.
In an embodiment of the present application, the backflow control valve is a two-position three-way solenoid valve or a two-position three-way solenoid valve.
In an embodiment of the application, a post-filter is connected to the main pipeline, the post-filter is used for filtering pure water flowing out from the pure water outlet, and one end of the return pipeline, which is connected to the main pipeline on the outlet side of the pure water, is located between the reverse osmosis filter element and the post-filter or between the post-filter and the water intake switch.
Furthermore, the utility model also provides a water purifier, including the aforesaid water purification system.
Compared with the prior art, the application has the beneficial effects that: the utility model discloses water purification system is through setting up the return line, can make the pure water backward flow and combine the raw water to wash the reverse osmosis filter core, thereby reduce the TDS difference value of reverse osmosis filter core both sides water, do not use in order to improve a period, the quality of water of first cup of water when the water intaking is used again, return line's when only setting up a first check valve on the return line simultaneously can control the water intaking switch and open blocking of return line and switching on of return line when the water intaking switch is closed, water path structure is simple, the cost is effectively reduced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of a first embodiment of the water purification system of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the water purification system of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the water purification system of the present invention.
In the figure:
1. a main pipeline; 2. a source of raw water; 3. a reverse osmosis filter element; 31. a water inlet; 32. a pure water outlet; 33. a waste water outlet; 4. a return line; 5. a first check valve; 6. a booster pump; 7. a water inlet control valve; 8. a water taking switch; 9. a pre-filter; 10. a pure water line; 11. a high voltage switch; 12. a post-filter; 13. a second one-way valve; 14. a waste water line; 15. a waste water control valve; 16. and a reflux control valve.
[ detailed description ] embodiments
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
As shown in fig. 1, the water purification system capable of back-flow flushing according to a preferred embodiment of the present invention includes: the main pipeline 1 is used for connecting a raw water source 2; the reverse osmosis filter element 3 is connected to the main pipeline 1 and comprises a water inlet 31 and a pure water outlet 32, and the water inlet 31 is communicated with the raw water source 2; the water taking switch 8 is connected to the main pipeline 1 and communicated with the pure water outlet 32; the return pipeline 4 is connected to the main pipeline 1, and two ends of the return pipeline are respectively communicated with the pure water outlet 32 and the water inlet 31 so as to mix the pure water into the raw water to flush the reverse osmosis filter element 3; the return line 4 is provided with only a first check valve 5 for preventing raw water from flowing from the return line 4 to the pure water outlet 32, and the first check valve 5 is configured to be non-conductive when the water intake switch 8 is in an open state and to be kept conductive for a preset time after the water intake switch 8 is switched to a closed state.
The utility model discloses water purification system is through setting up return line 4, can make the pure water backward flow and combine the raw water to wash reverse osmosis filter core 3, thereby reduce the TDS difference value of reverse osmosis filter core 3 both sides water, do not use in order to improve a period of time, the quality of water of first cup of water when using once more, return line 4 only sets up the switching on of return line 4 when only setting up a first check valve 5 can control water intaking switch 8 and open and return line 4 when water intaking switch 8 closes on return line 4 simultaneously, water path structure is simple, the cost is effectively reduced.
Further, the water purification system further comprises a booster pump 6, and the booster pump 6 is connected to the main pipeline 1 on the side of the water inlet 31 so as to boost the raw water flowing to the reverse osmosis filter element 3. Two ends of the booster pump 6 are respectively communicated with the water inlet 31 and the return pipeline 4. The booster pump 6 is configured to continue to operate for a preset time after the water intake switch 8 is switched to the off state, and then to stop. In the present embodiment, the preset time is between 20s and 40 s. The booster pump 6 is specifically controlled by an electric control board (not shown) of the water purification system, and the preset time is adjusted by the electric control board, and it is common knowledge in the art that the electric control board controls the working state of the components in the water purification system, and the structure thereof is not described in detail herein.
Through 6 time delays of booster pump after to the water intaking and closing for when opening or closing water intaking switch 8, there is the difference in the pressure of the water of the first check valve 5 of flow direction, thereby can preconditioning first check valve 5 to suitable pressure, break return line 4 when realizing that water intaking switch 8 opens and switch on return line 4 when blocking return line 4 and water intaking switch 8 and closing.
Specifically, when the water intake switch 8 is turned on, the water pressure flowing to the first check valve 5 is small, and at this time, pure water is not enough to push the valve core (not shown) of the first check valve 5; when closing water intaking switch 8 and being in when predetermineeing the time, when booster pump 6 continues to carry out the pressure boost to the raw water, reverse osmosis filter core 3 is flowed the pure water by pure water outlet 32, and at this in-process, the water pressure increase of the first check valve 5 of flow direction to can push the case, make first check valve 5 switch on, the pure water flows to reverse osmosis filter core 3's water inlet 31 through return line 4, thereby reduces the water quality difference of reverse osmosis filter core 3 water inlet 31 side and pure water outlet 32 side.
Preferably, the main pipe 1 is further connected to a water inlet control valve 7 for controlling on/off of raw water flowing to the booster pump 6, and the water inlet control valve 7 is connected to a front end of the booster pump 6 to open the raw water source 2 when the water purification system starts to produce water and to shut off the raw water source 2 when the water purification system stops producing water. The water inlet control valve 7 is specifically an electromagnetic valve or an electric valve, and can be electrically connected with an electric control board, so that automatic regulation and control are realized.
In addition, in order to prolong the service life of the reverse osmosis filter element 3, a pre-filter 9 positioned at the upstream of the reverse osmosis filter element 3 is connected to the main pipeline 1 so as to primarily filter the raw water flowing to the reverse osmosis filter element 3. Specifically, the pre-filter 9 is located between the raw water source 2 and the water inlet control valve 7, and the pre-filter 9 may include a single filter element or a plurality of filter elements, which specifically include at least one of a PP cotton filter element, a carbon rod, or a carbon fiber filter element.
In this embodiment, a section of the main line 1 connected to the pure water outlet 32 is defined as a pure water line 10, one end of the water intake switch 8 and one end of the return line 4 are both connected to the pure water line 10, and pure water produced by the reverse osmosis filter element 3 flows through the pure water line 10 to the water intake switch 8 and the return line 4.
The pure water pipeline 10 is also connected with a high-voltage switch 11 for detecting the water pressure of the pure water pipeline 10, and the high-voltage switch 11 is electrically connected with the electric control board so as to transmit signals to the electric control board and further control the working state of the booster pump 6.
Further, a post-filter 12 for filtering pure water is connected between the pure water outlet 32 and the high voltage switch 11, and is used for performing secondary filtration on pure water to improve the quality of pure water. The post-filter 12 may comprise a single filter element or a plurality of filter elements, including in particular at least one of PP cotton filter elements, carbon rods or carbon fibre filter elements.
In this embodiment, the end of the return line 4 connected to the pure water line 10 may be located between the reverse osmosis filter cartridge 3 and the post-filter 12 or between the post-filter 12 or the water intake switch 8, and the application is not limited herein.
Preferably, a second check valve 13 is connected between the post-filter 12 and the high-pressure switch 11, and the second check valve 13 is configured to prevent reverse flow of pure water back to the post-filter 12. Through setting up second check valve 13, can avoid pure water to flow back reverse osmosis filter core 3 through rearmounted filter 12 to prevent pure water pipeline 10 decompression, ensure high-pressure switch 11 normal operating.
The water purification system further comprises a waste water pipeline 14, the reverse osmosis filter element 3 further comprises a waste water outlet 33 connected with one end of the waste water pipeline 14, and waste water generated by water production of the reverse osmosis filter element 3 flows into the waste water pipeline 14 through the waste water outlet 33. Preferably, a wastewater control valve 15 for controlling a ratio of pure water to wastewater is connected to the wastewater line 14 to control wastewater to be discharged in a certain ratio, so that water is saved while a water production rate of the reverse osmosis filter element 3 is ensured. In this embodiment, the waste water control valve 15 may specifically adopt an electromagnetic valve or an electrically operated valve to electrically connect with an electric control board of the water purification system, so as to achieve automatic regulation and control.
The utility model discloses water purification system working process as follows: when in a water making state, the water inlet control valve 7 is communicated, raw water flows into the main pipeline 1 from the raw water source 2, is primarily filtered by the pre-filter 9 and then flows into the booster pump 6;
the raw water enters the reverse osmosis filter element 3 after being pressurized by the booster pump 6, the pure water flows into the pure water pipeline 10 from the pure water outlet 32 and flows to the water taking switch 8 through the post-filter 12, the second one-way valve 13 and the high-voltage switch 11 in sequence, and a user can open the water taking switch 8 to receive the pure water;
in this process, wastewater flows into the wastewater line 14 from the wastewater outlet 33 and is discharged through the wastewater control valve 15;
when the water taking switch 8 is closed to stop water making, the booster pump 6 continues to work within a preset time, the water inlet control valve 7 and the waste water control valve 15 are both in an open state, at the moment, the water pressure provided by the booster pump 6 is greater than the opening pressure of the first one-way valve 5, pure water flowing out of the pure water outlet 32 flows into the main pipeline 1 at the inlet side of the booster pump 6 along the return pipeline 4, is mixed with raw water and flows into the reverse osmosis filter element 3 from the water inlet 31 again, so that the TDS difference between two sides of the reverse osmosis filter element 3 is reduced, and the water quality of a first cup of water when the water purifying system is reused after a period of time is improved;
when the preset time is exceeded, the booster pump 6, the water inlet control valve 7 and the waste water control valve 15 are closed, and the water purification system enters a standby state. Preferably, the water purification system is programmed to control the water inlet control valve 7, the booster pump 6 and the waste water control valve 15 to be opened by the electric control board at intervals, so as to replace water in the reverse osmosis filter element 3, thereby preventing water quality from being deteriorated when the water purification system is not used for a long time.
In an embodiment, referring to fig. 2, the first check valve 5 may be eliminated, and the water inlet control valve 7 may be replaced with a backflow control valve 16, the backflow control valve 16 is located at a position where the main pipeline 1 on the side of the water inlet 31 is connected to the backflow pipeline 4, the backflow control valve 16 is configured to control the raw water source 2 and the water inlet 31 to be conducted when the water taking switch 8 is in the open state, and to control the backflow pipeline 4 and the water inlet 31 to be conducted within a preset time after the water taking switch 8 is switched to the closed state.
The booster pump 6 is located between the reverse osmosis filter cartridge 3 and the return flow control valve 16. The backflow control valve 16 is specifically a two-position three-way electromagnetic valve or a two-position three-way electromagnetic valve, and can control the raw water source 2 to be communicated with the water inlet 31 or the backflow pipeline 4 to be communicated with the water inlet 31 through an electric control plate.
When the water purification system is in a water production state, the water taking switch 8 is opened, raw water enters the booster pump 6 and the reverse osmosis filter element 3 in sequence through the backflow control valve 16 and flows out of the water taking switch 8, and in the process, the backflow control valve 16 prevents pure water flowing into the backflow pipeline 4 from flowing into the main pipeline 1 on the inlet side of the booster pump 6;
when water is not required to be taken, the water taking switch 8 is closed, the booster pump 6 continues to work within a preset time, meanwhile, the waste water control valve 15 is in an open state, the return pipeline 4 is communicated with the water inlet 31, pure water in the return pipeline 4 flows into the main pipeline 1 on the inlet side of the booster pump 6 and is mixed with raw water in the main pipeline 1, and the reverse osmosis filter element 3 is flushed after the booster pump 6 is boosted so as to reduce TDS difference values at two sides of the reverse osmosis filter element 3.
The water purification system adopting the structure has the advantages that the water purification system can control the on-off of raw water and the on-off of the return pipeline 4 without additionally arranging the water inlet control valve 7, so that the water path structure is further simplified; meanwhile, compared with the situation that the first check valve 5 is adopted to control the on-off of the return pipeline 4 in the water making state and the water making stopping state, the reliability of the return control valve 16 is better.
In another embodiment, referring to fig. 3, the return line 4 may be further connected with a first check valve 5, which functions as a one-way connection, and the first check valve 5 is configured to prevent raw water from flowing from the return line 4 to the pure water outlet 32, so as to prevent raw water from flowing into the return line 4 due to leakage of the return control valve 16, thereby further improving the reliability of the return line 4.
Furthermore, the present invention further provides a water purifier, which comprises a housing (not shown) and the water purifying system installed inside the housing and capable of washing back.
To sum up, the utility model connects the return line on the main line, and in the preset time after closing the water intake switch, the pure water in the reverse osmosis filter element can flow back to the water inlet of the reverse osmosis filter element through the return line and be washed by mixing the raw water, so as to reduce the TDS difference value at the two sides of the reverse osmosis filter element, improve the water quality in the subsequent use, and simultaneously, the mixed washing has better washing effect on the surface of the reverse osmosis filter element, reduces the pollution, thereby improving the service life of the reverse osmosis filter element;
the on-off of the return pipeline under the opening state and the closing state of the water taking switch can be realized only by connecting the return pipeline with the first one-way valve, the structure is simple, and the cost can be effectively reduced;
adopt the backward flow control valve to be connected between one side that main line and water inlet are linked together and the return line to realize that water inlet and raw water source switch on or return line and water inlet switch on, compare in first check valve, the reliability is better, and need not to additionally set up into water control valve again, and water purification system structure is simpler.
The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.
Claims (10)
1. A water purification system, comprising:
the main pipeline (1) is used for connecting a raw water source (2);
the reverse osmosis filter element (3) is connected to the main pipeline (1) and comprises a water inlet (31) and a pure water outlet (32), and the water inlet (31) is communicated with the raw water source (2);
the water taking switch (8) is connected to the main pipeline (1) and communicated with the pure water outlet (32); and
the return pipeline (4) is connected to the main pipeline (1), and two ends of the return pipeline are respectively communicated with the pure water outlet (32) and the water inlet (31) so as to mix pure water into the raw water to flush the reverse osmosis filter element (3);
wherein the return pipeline (4) is only provided with a first one-way valve (5) for preventing raw water from flowing to the pure water outlet (32) from the return pipeline (4), and the first one-way valve (5) is configured to be not conducted when the water taking switch (8) is in an open state and to be kept conducted within a preset time after the water taking switch (8) is switched to a closed state.
2. The water purification system according to claim 1, further comprising a booster pump (6) connected to the main pipeline (1) on the side of the water inlet (31), wherein two ends of the booster pump (6) are respectively communicated with the water inlet (31) and the return pipeline (4);
wherein the booster pump (6) is configured to continue to operate for the preset time after the water intake switch (8) is switched to the off state and then stop.
3. The water purification system of claim 2, wherein the predetermined time is 20s to 40 s.
4. A water purification system, comprising:
the main pipeline (1) is used for connecting a raw water source (2);
the reverse osmosis filter element (3) is connected to the main pipeline (1) and comprises a water inlet (31) and a pure water outlet (32), and the water inlet (31) is communicated with the raw water source (2);
the water taking switch (8) is connected to the main pipeline (1) and communicated with the pure water outlet (32); and
the return pipeline (4) is connected to the main pipeline (1), and two ends of the return pipeline are respectively communicated with the pure water outlet (32) and the water inlet (31) so as to mix pure water into the raw water to flush the reverse osmosis filter element (3);
wherein a backflow control valve (16) is arranged at the joint of the main pipeline (1) positioned at the side of the water inlet (31) and the backflow pipeline (4), the backflow control valve (16) is configured to control the raw water source (2) and the water inlet (31) to be conducted when the water taking switch (8) is in an open state, and to control the backflow pipeline (4) and the water inlet (31) to be conducted within a preset time after the water taking switch (8) is switched to a closed state.
5. Water purification system according to claim 4, further comprising a booster pump (6) connected to the main line (1) on the side of the water inlet (31), the booster pump (6) being located between the reverse osmosis cartridge (3) and the return flow control valve (16);
wherein the booster pump (6) is configured to continuously operate within the preset time after the water intake switch (8) is in an open state and switched to a closed state.
6. The water purification system of claim 5, wherein the predetermined time is 20s to 40 s.
7. A water purification system according to claim 4, wherein only a first one-way valve (5) is connected to the return line (4), the first one-way valve (5) being configured to prevent raw water from flowing from the return line (4) to the pure water outlet (32).
8. Water purification system according to claim 4, wherein the return flow control valve (16) is a two-position three-way solenoid valve or a two-position three-way electro valve.
9. The water purification system according to claim 1 or 4, wherein a post-filter (12) is connected to the main pipeline (1), the post-filter (12) is used for filtering pure water flowing out from the pure water outlet (32), and one end of the return pipeline (4) connected with the main pipeline (1) on the pure water outlet (32) side is located between the reverse osmosis filter element (3) and the post-filter (12) or between the post-filter (12) and the water intake switch (8).
10. A water purification machine comprising a water purification system as claimed in any one of claims 1 to 9.
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| CN202023312123.9U CN214715718U (en) | 2020-12-31 | 2020-12-31 | Water purification system and water purifier with same |
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| CN202023312123.9U CN214715718U (en) | 2020-12-31 | 2020-12-31 | Water purification system and water purifier with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115475519A (en) * | 2021-11-25 | 2022-12-16 | 青岛海尔施特劳斯水设备有限公司 | Water purifier and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115475519A (en) * | 2021-11-25 | 2022-12-16 | 青岛海尔施特劳斯水设备有限公司 | Water purifier and control method thereof |
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