CN214734886U - Water purification system and water purification unit - Google Patents
Water purification system and water purification unit Download PDFInfo
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- CN214734886U CN214734886U CN202120153716.0U CN202120153716U CN214734886U CN 214734886 U CN214734886 U CN 214734886U CN 202120153716 U CN202120153716 U CN 202120153716U CN 214734886 U CN214734886 U CN 214734886U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 406
- 238000000746 purification Methods 0.000 title claims abstract description 70
- 239000002351 wastewater Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 abstract description 85
- 238000005406 washing Methods 0.000 abstract description 35
- 238000011010 flushing procedure Methods 0.000 abstract description 30
- 238000004519 manufacturing process Methods 0.000 abstract description 28
- 238000004140 cleaning Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 14
- 230000004907 flux Effects 0.000 abstract description 13
- 238000002360 preparation method Methods 0.000 description 9
- 239000012141 concentrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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Abstract
The utility model discloses a water purification system and water purification equipment, open first solenoid valve and second solenoid valve under the system water mode, close third solenoid valve and fourth solenoid valve, the dense water that first filter core produced gets into the second filter core and is filtered and become pure water output, has increased the water flux of production in the water purification system unit interval with the mode of two membrane system water; in the first flushing mode, the first electromagnetic valve and the second electromagnetic valve are closed, the third electromagnetic valve and the fourth electromagnetic valve are opened, the pure water produced by the first filter element enters the raw water side of the second filter element to flush the second filter element before the membrane, the pure water produced by the second filter element flows back to the front end of the booster pump through the first return pipeline to flush the second filter element before the membrane again, and the TDS value is lower, and the cleaning effect is better; the self-cleaning of the first filter element can be realized in the second flushing mode; make the utility model provides a water purification system has realized two membrane system water increase fluxes, and the single membrane all can implement the washing before the membrane, the technological effect of the life-span homoenergetic of membrane effectively prolonging.
Description
Technical Field
The utility model belongs to the technical field of the water purification, specifically speaking relates to a water purification system and water purification unit.
Background
RO water purification machines (or RO reverse osmosis water purification machines/RO water purification machines) are water purification machines that use the principle of reverse osmosis technology for water filtration, and RO reverse osmosis technology is widely used in various fields such as military, medical treatment, industry, civilian use, and the like. Is known as one of the six high technologies in this century.
Along with the increasing severity of environmental pollution and water pollution, the drinking water health of people is seriously threatened, and the RO machine water purification technology is a better way for preparing purified water because various harmful impurities, heavy metals, viruses, bacteria and the like in water can be removed, the efficiency is high, and the removal is thorough.
However, due to the nature of the RO membrane, the water before the membrane and the water after the membrane tend to approach each other after standing for a while by ion diffusion TSD, resulting in a higher TDS of the first cup of pure water. In addition, after a period of time of use, especially for areas with high water hardness, the high concentration of raw water ions on the raw water side of the membrane surface can cause membrane surface crystallization, wherein the joint of the RO membrane bottom and a wastewater port is easy to crystallize, and the membrane blockage is caused.
In order to solve the problem that the TDS value of first cup of pure water is on the high side and the easy crystallization of membrane raw water side, adopt raw water or pure water or raw water pure water mixed liquor to wash the mode of RO membrane raw water side among the prior art more, with the log raft play of the high TDS concentration of raw water side, use raw water/pure water and pure water mixed liquor to soak the raw water side, thereby reduce the ion diffusion before the diaphragm, guarantee to stew the TDS value of first cup of pure water after a period of time and be normal, and avoided the problem of crystallization before the membrane.
In the existing scheme for washing the raw water side of the RO membrane, there is a double-membrane system, in which a first membrane is used for producing water, the water producing side of a second membrane is connected to the water inlet of the first membrane, the second membrane is started after the water production of the first membrane is finished, and the produced water enters the raw water side of the first membrane from the water inlet of the first membrane to perform pre-membrane washing.
In the double-membrane system, the second membrane is only used for flushing the first membrane before the membrane is washed, so that the utilization rate is low, and self-cleaning cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water purification system and water purification unit, implement the transformation on the basis of current two membrane water purification systems, all be used for making water with two filter cores, increase the product flux in the system unit interval, and adopt first filter core product water to carry out the membrane washing to the second filter core simultaneously, the product water of second filter core during washing returns the water inlet of first filter core and is used for producing water again and carries out the membrane washing to the second filter core, make the water source of first filter core be the product water of second filter core, TDS value is lower, the cleaning performance is better; and the first filter element can adopt raw water to carry out self-cleaning, so that the technical effects that the flux is increased by double-membrane water production, the single membrane can carry out pre-membrane cleaning, and the service life of the membrane can be effectively prolonged are achieved.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a water purification system is proposed, comprising: a water inlet pipeline and a pure water outlet pipeline; a water inlet of the booster pump is connected with the water inlet pipeline; the water inlet of the first filter element is connected with the water outlet of the booster pump, and the water outlet of the first filter element is connected with the pure water outlet pipeline; further comprising: the water inlet of the second filter element is connected with the concentrated water outlet of the first filter element, and the water outlet of the second filter element is connected with the pure water outlet pipeline; the first return pipeline is connected between the water outlet of the second filter element and the water inlet side of the booster pump; the first branch pipeline is connected between the water outlet of the first filter element and the water inlet of the second filter element; the first electromagnetic valve is arranged on the pure water outlet pipeline; the second electromagnetic valve is arranged on a connecting pipeline between the concentrated water outlet of the first filter element and the water inlet of the second filter element; the third electromagnetic valve is arranged on a concentrated water outlet pipeline of the first filter element; and the fourth electromagnetic valve is arranged on the first branch pipeline.
Further, the system further comprises: the fifth electromagnetic valve is arranged on a concentrated water outlet pipeline of the second filter element; and the concentrated water outlet pipeline of the first filter element is communicated with the concentrated water outlet pipeline of the second filter element, and the communication point is positioned on the water inlet side of the fifth electromagnetic valve.
Furthermore, the fifth electromagnetic valve is a combined electromagnetic valve, and is fully opened when opened and is in a wastewater ratio when closed.
Further, the system further comprises: and the sixth electromagnetic valve is arranged on the first return pipeline.
Further, the system further comprises: and the second return pipeline is connected between the water outlet and the water inlet of the second filter element, and a seventh electromagnetic valve is installed on the second return pipeline.
Further, the water purification system still includes: and the water quality detection element is arranged on the water inlet pipeline.
Further, the water purification system still includes: the preposed main filter element component is arranged on the water inlet pipeline.
Further, the water purification system still includes: and the rear main filter element assembly is arranged on the pure water outlet pipeline.
Further, the flow ratio of the first filter element to the second filter element is 1:1-3: 1.
The utility model provides a water purification unit, includes water purification system, water purification system includes: a water inlet pipeline and a pure water outlet pipeline; a water inlet of the booster pump is connected with the water inlet pipeline; the water inlet of the first filter element is connected with the water outlet of the booster pump, and the water outlet of the first filter element is connected with the pure water outlet pipeline; further comprising: the water inlet of the second filter element is connected with the concentrated water outlet of the first filter element, and the water outlet of the second filter element is connected with the pure water outlet pipeline; the first return pipeline is connected between the water outlet of the second filter element and the water inlet side of the booster pump; the first branch pipeline is connected between the water outlet of the first filter element and the water inlet of the second filter element; the first electromagnetic valve is arranged on the pure water outlet pipeline; the second electromagnetic valve is arranged on a connecting pipeline between the concentrated water outlet of the first filter element and the water inlet of the second filter element; the third electromagnetic valve is arranged on a concentrated water outlet pipeline of the first filter element; and the fourth electromagnetic valve is arranged on the first branch pipeline.
Compared with the prior art, the utility model discloses an advantage is with positive effect: in the water purification system and the water purification equipment provided by the utility model, under the water preparation mode, the first electromagnetic valve and the second electromagnetic valve are opened, the third electromagnetic valve and the fourth electromagnetic valve are closed, the concentrated water generated by the first filter element enters the second filter element to be filtered to be pure water output, and the water production flux of the water purification system in unit time is increased in a double-membrane water preparation mode; in a first flushing mode, the first electromagnetic valve and the second electromagnetic valve are closed, the third electromagnetic valve and the fourth electromagnetic valve are opened, pure water produced by the first filter element enters the raw water side of the second filter element to flush the second filter element before the membrane, pure water produced by the second filter element flows back to the front end of the booster pump through the first return pipeline, and returns to the water inlet of the first filter element to flush the second filter element before the membrane again, so that the water source of the first filter element is produced water of the second filter element, the TDS value is lower, and the cleaning effect is better; in the second flushing mode, the second electromagnetic valve is closed, the third electromagnetic valve and the fifth electromagnetic valve are opened, and raw water enters the first filter element to flush the first filter element before the membrane, so that the self-cleaning of the first filter element is realized; it is thus clear that, based on the aforesaid the utility model provides a water purification system combines control, has realized two membrane system water increase fluxes, and the single membrane all can be implemented and wash before the membrane, the technological effect of the life-span homoenergetic of membrane effectively prolonged.
Further, the utility model discloses still provide the third and wash the mode, open third solenoid valve, fourth solenoid valve and fifth solenoid valve under this mode, close first solenoid valve and second solenoid valve, the pure water of first filter core output gets into the former water side of second filter core and implements the washing before the membrane to the second filter core, and the dense water of two filter cores is all discharged.
Further, the utility model discloses still provide the fourth mode of washing, open the third solenoid valve under this mode, fourth solenoid valve and seventh solenoid valve, close first solenoid valve, the second solenoid valve, fifth solenoid valve and sixth solenoid valve, the pure water of first filter core output gets into and washes before the membrane is implemented to the second filter core former water side, the pure water of second filter core output then flows back to self former water side through second return line for the water source of second filter core is the pure water of self output, the TDS value is lower, the cleaning performance is better.
Further, the utility model discloses still provide the fifth mode of washing, open first solenoid valve and third solenoid valve under this mode, close second solenoid valve, fourth solenoid valve and fifth solenoid valve, the pure water of first filter core output flows back to self former water side through first return line for the water source of first filter core is the pure water of self output, implements another mode of automatically cleaning for first filter core.
Further, the utility model discloses set up water quality testing component detection raw water quality of water on water purification system's the inlet line, implement best cleaning performance to two filter cores according to the foretell washing mode of the quality of water combination of raw water, guarantee that the big logical volume of two membranes produces water effectively prolongs the life-span of two membranes simultaneously.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.
Drawings
Fig. 1 is a system architecture diagram of a water purification system provided by the present invention;
fig. 2 is a second system architecture diagram of the water purification system of the present invention;
fig. 3 is a third system architecture diagram of the water purification system provided by the utility model.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The utility model provides a water purification system, as shown in figure 1, this water purification system includes water intake pipe 1, pure water outlet pipe way 2, booster pump 3, first filter core 4, second filter core 5, first return line 6 and first branch pipeline 7.
The water inlet of the booster pump 3 is connected with the water inlet pipeline 1; the water inlet of the first filter element 4 is connected with the water outlet of the booster pump 3, and the water outlet thereof is connected with the pure water outlet pipeline 2; the water inlet of the second filter element 5 is connected with the concentrated water outlet of the first filter element 4, and the water outlet thereof is connected with the pure water outlet pipeline 2.
The first return pipeline 6 is connected between the water outlet of the second filter element 5 and the water inlet side of the booster pump 3; the first branch pipe 7 is connected between the water outlet of the first filter element 4 and the water inlet of the second filter element 5.
A first electromagnetic valve 81 is arranged on the pure water outlet pipeline 2; a second electromagnetic valve 82 is arranged on a connecting pipeline between the concentrated water outlet of the first filter element 4 and the water inlet of the second filter element 5; a third electromagnetic valve 83 is arranged on the concentrated water outlet pipeline of the first filter element 4; a fourth solenoid valve 84 is mounted on the first branch line 7.
In addition, a preposed main filter element component 01, such as a PPF primary filter, a UDF filter, a CTO filter and the like, is connected to the water inlet pipeline 1; a post main filter element component 02, such as a post active carbon filter, a water tap, etc., is connected to the pure water outlet pipe 2.
Based on the utility model provides a water purification system, when making water, open first solenoid valve 81 and second solenoid valve 82, close third solenoid valve 83 and fourth solenoid valve 84, water gets into first filter core 4 through booster pump 3, flow from pure water outlet pipe way 2 after first filter core 4 filters, the dense water that first filter core 4 produced simultaneously gets into the former water side of second filter core 5, also flow from pure water outlet pipe way 2 after filtering by second filter core 5 to the mode of two membrane system water has increased the water production flux of water purification system list for the time.
Based on the above-mentioned the water purification system, after the water production, first solenoid valve 81 and second solenoid valve 82 are closed to the accessible, open third solenoid valve 83 and fourth solenoid valve 84, start booster pump 3, implement first washing mode, under this mode, water gets into first filter core 4 through booster pump 3, the pure water after first filter core 4 filters flows in the former water side of second filter core 5 from first branch pipeline 7 and washes before its implementation membrane, the thick water of production flows out from its thick water outlet pipe way 92, and simultaneously, the pure water that second filter core 5 produced returns booster pump 3 income water side through first return pipeline 6, get into first filter core 4 product water once more, the pure water of production implements the membrane washing to second filter core 5, the TDS value is lower, the cleaning performance is better.
Based on the above, the utility model provides a water purification system, after the water production to and the first mode of washing is implemented and is accomplished the back, the second solenoid valve is closed to the accessible, opens the mode of third solenoid valve 83, and the former water side that uses the raw water to get into first filter core 4 washes before its implementation membrane, has realized that the automatically cleaning of first filter core 4 washes, the embodiment of the utility model provides a decide the second mode of washing.
It is thus clear that, based on the aforesaid the utility model provides a water purification system combines the switching of each solenoid valve, has realized the technological effect of two membrane system water increase system flux to, washing before the membrane can all be implemented to single membrane, realized the technological effect of the life-span homoenergetic of membrane effectively prolonging.
As shown in fig. 1, the water purification system provided by the utility model further comprises a fifth solenoid valve 85, which is installed on the concentrated water outlet pipeline of the second filter element 5, and the concentrated water outlet pipeline 91 of the first filter element 4 is communicated with the concentrated water outlet pipeline of the second filter element 5, and the communication point is located at the fifth solenoid valve 85.
In some embodiments of the present invention, the fifth solenoid valve 85 is a combined solenoid valve, which is fully opened when opened and is waste water ratio when closed; the closing of the fifth solenoid valve 85 in the water producing mode is effective as a waste water ratio, the closing of the fifth solenoid valve 85 in the first flushing mode is effective as a waste water ratio, and the opening of the fifth solenoid valve 85 in the second cleaning mode is effective as a full open.
The following will describe in detail the water purification apparatus applied to water production and cleaning.
Example one
Referring to the water purification system shown in fig. 1, after a faucet is opened, a water production mode is started, and in the water production mode, a first electromagnetic valve 81 and a second electromagnetic valve 82 are controlled to be opened, a third electromagnetic valve 83 and a fourth electromagnetic valve 84 are closed, water enters a first filter element 4 through a booster pump 3, flows out from a pure water outlet pipeline 2 after being filtered by the first filter element 4, and simultaneously, concentrated water generated by the first filter element 4 enters a raw water side of a second filter element 5 and flows out from the pure water outlet pipeline 2 after being filtered by the second filter element 5, so that the water production flux of the water purification system in one time is increased in a double-membrane water production mode.
In the water production mode, the second filter element 5 uses the concentrated water produced after the water production by the first filter element 4 as raw water to perform filtration to produce water, so in the embodiment, after the water production is finished, the first flushing mode is started to perform pre-membrane flushing on the second filter element.
Specifically, after the water preparation is finished, the first washing mode is performed after the water preparation is left for 1 minute, and the second filter element 5 is subjected to pre-membrane washing: the first electromagnetic valve 81 and the second electromagnetic valve 82 are closed, the third electromagnetic valve 83 and the fourth electromagnetic valve 84 are opened, the booster pump 3 is started, water enters the first filter element 4 through the booster pump 3, pure water filtered by the first filter element 4 flows into the raw water side of the second filter element 5 from the first branch pipeline 7 to perform pre-membrane washing on the pure water, generated concentrated water flows out of the concentrated water outlet pipeline 92, meanwhile, the pure water generated by the second filter element 5 returns to the water inlet side of the booster pump 3 through the first return pipeline 6 and enters the water generated by the first filter element 4 again, the generated pure water performs pre-membrane washing on the second filter element 5, the TDS value is lower, the cleaning effect is better, the water source TDS value of the first filter element 4 is effectively reduced, the pre-membrane ion concentration of the first filter element 4 is indirectly reduced, and a certain washing effect is achieved before the membrane of the first filter element 4.
In this embodiment, the ratio of the waste water in the concentrate outlet pipes of the first filter element 4 and the second filter element 5 is maintained in the same state in the conventional water production control manner.
In this embodiment, the flow ratio of the first filter element 4 to the second filter element 5 is designed to be 1:1-3:1, when the system recovery rate is 75%, the flow ratio is preferably 2:1, and when the system recovery rate is 66%, the flow ratio is preferably 3:1, so as to ensure that the water produced by the first filter element 4 meets the water inflow requirement of the second filter element 5 in the first flushing mode.
Example two
Referring to the water purification system shown in fig. 1, after a faucet is opened, a water production mode is started, and in the water production mode, a first electromagnetic valve 81 and a second electromagnetic valve 82 are controlled to be opened, a third electromagnetic valve 83 and a fourth electromagnetic valve 84 are closed, water enters a first filter element 4 through a booster pump 3, flows out from a pure water outlet pipeline 2 after being filtered by the first filter element 4, and simultaneously, concentrated water generated by the first filter element 4 enters a raw water side of a second filter element 5 and flows out from the pure water outlet pipeline 2 after being filtered by the second filter element 5, so that the water production flux of the water purification system in one time is increased in a double-membrane water production mode.
After the water preparation is finished, the first washing mode is implemented after the standing for 1 minute, and the second filter element 5 is washed before the membrane: the first electromagnetic valve 81 and the second electromagnetic valve 82 are closed, the third electromagnetic valve 83 and the fourth electromagnetic valve 84 are opened, the booster pump 3 is started, water enters the first filter element 4 through the booster pump 3, pure water filtered by the first filter element 4 flows into the raw water side of the second filter element 5 from the first branch pipeline 7 to perform membrane pre-washing on the pure water, generated concentrated water flows out of the concentrated water outlet pipeline 92, meanwhile, pure water produced by the second filter element 5 returns to the water inlet side of the booster pump 3 through the first return pipeline 6 and enters the first filter element 4 to produce water again, the produced pure water performs membrane pre-washing on the second filter element 5, the TDS value is lower, and the cleaning effect is better.
In this embodiment, after the second filter element 5 is subjected to pre-membrane washing in the first washing mode, the second washing mode may be started, and the first filter element 4 is used to perform pre-membrane self-cleaning, so that the technical effects of the first filter element 4 and the second filter element 5 both being capable of performing pre-membrane washing and effectively prolonging the service life of the two membranes are achieved.
Specifically, in this embodiment, as shown in fig. 1, a fifth electromagnetic valve 85 is installed on a concentrate outlet pipe 92 of the second filter element 5, and a concentrate outlet pipe 91 of the first filter element 4 is communicated with the concentrate outlet pipe 92 of the second filter element 5, and a communication point is located on a water inlet side of the fifth electromagnetic valve 85; the fifth electromagnetic valve 85 is implemented by a combined electromagnetic valve, which is fully opened when it is opened and is used as a waste water ratio when it is closed, so that the fifth electromagnetic valve 85 is set to be closed for use as a waste water ratio when it is applied to the first embodiment.
In this embodiment, after the first flushing mode is finished, the first flushing mode is set aside for 1 minute, the second flushing mode is started to flush the first filter element 4 before the membrane, the first electromagnetic valve 81 and the second electromagnetic valve 82 are closed, and the third electromagnetic valve 83 and the fifth electromagnetic valve 85 are opened, so that the concentrated water outlet pipeline of the first filter element 4 is fully opened, the booster pump 3 is opened, and raw water enters the raw water side of the first filter element 4 from the water inlet and flows out from the concentrated water outlet thereof, thereby realizing the membrane flushing of the first filter element 4 before the membrane.
The second washes the mode and can implement according to fixed length of time or fixed raw water inflow, according to actual demand design can.
EXAMPLE III
In the control method of the water purification system provided in this embodiment, in combination with the fifth electromagnetic valve 85 provided in the second embodiment, referring to the water purification system shown in fig. 1, after the faucet is turned on, the water production mode is started, and in the water production mode, the first electromagnetic valve 81 and the second electromagnetic valve 82 are controlled to be turned on, the third electromagnetic valve 83, the fourth electromagnetic valve 84 and the fifth electromagnetic valve 85 are turned off, so that water enters the first filter element 4 through the booster pump 3, flows out from the pure water outlet pipeline 2 after being filtered by the first filter element 4, and simultaneously, concentrated water generated by the first filter element 4 enters the raw water side of the second filter element 5 and also flows out from the pure water outlet pipeline 2 after being filtered by the second filter element 5, thereby increasing the water flux of the water purification system in a single time in a double-membrane water production manner.
After the water preparation is finished, the second filter element 5 is subjected to pre-membrane washing in a third washing mode after standing for 1 minute: the first electromagnetic valve 81 and the second electromagnetic valve 82 are closed, the third electromagnetic valve 83, the fourth electromagnetic valve 84 and the fifth electromagnetic valve are opened, the booster pump 3 is started, water enters the first filter element 4 through the booster pump 3, pure water filtered by the first filter element 4 flows into the raw water side of the second filter element 5 from the first branch pipeline 7 to carry out membrane pre-washing on the pure water, because the fifth electromagnetic valve 85 is fully opened, the concentrated water outlet pipeline 91 of the first filter element 4 and the concentrated water outlet pipeline 92 of the second filter element 5 are fully opened, and concentrated water generated by the two flows out from the concentrated water outlet pipelines.
This third washes the mode and is applicable to the better condition of raw water quality of water, need not second filter core 5 from producing the pure water backward flow to first filter core 4 front end and implement better clean effect.
Example four
In this embodiment, the water purification system shown in fig. 2 is combined.
As shown in fig. 2, the water purifying system further includes a sixth solenoid valve 86 and a second return line 62, the sixth solenoid valve 85 is installed on the first return line 6, the second return line 62 is connected between the water outlet and the water inlet of the second filter element 5, and a seventh solenoid valve 87 is installed thereon.
Based on the water purification system, under the water preparation mode, the first electromagnetic valve 81 and the second electromagnetic valve 82 are controlled to be opened, the third electromagnetic valve 83, the fourth electromagnetic valve 84, the fifth electromagnetic valve 85, the sixth electromagnetic valve 86 and the seventh electromagnetic valve 87 are closed, water enters the first filter element 4 through the booster pump 3 and flows out of the pure water outlet pipeline 2 after being filtered by the first filter element 4, meanwhile, concentrated water generated by the first filter element 4 enters the raw water side of the second filter element 5 and also flows out of the pure water outlet pipeline 2 after being filtered by the second filter element 5, and the water production flux of the water purification system in single time is increased in a double-membrane water preparation mode.
After the water preparation is finished, the second filter element 5 is subjected to pre-membrane washing in a fourth washing mode after standing for 1 minute: the first electromagnetic valve 81, the second electromagnetic valve 82, the fifth electromagnetic valve 85 and the sixth electromagnetic valve 86 are closed, the third electromagnetic valve 83, the fourth electromagnetic valve 84 and the seventh electromagnetic valve 87 are opened, the booster pump 3 is started, water enters the first filter element 4 through the booster pump 3, pure water filtered by the first filter element 4 flows into the raw water side of the second filter element 5 from the first branch pipeline 7 to perform pre-membrane flushing on the raw water side, generated concentrated water flows out from a concentrated water outlet pipeline 92, meanwhile, pure water generated by the second filter element 5 returns to the front water inlet side of the second filter element 5 through the second return pipeline 62, and enters the second filter element 5 again to perform pre-membrane flushing on the raw water side.
This fourth mode of washing is applicable to the better condition of raw water quality of water, need not second filter core 5 from producing the pure water backward flow to first filter core 4 front end and implements better clean effect.
EXAMPLE five
The present embodiment can be used in the case of poor quality of raw water, and can be implemented in combination with the water purification system shown in fig. 1 or the water purification system shown in fig. 2, and the water purification system is implemented after the water production mode and the first flushing mode are finished, which corresponds to the fifth flushing mode.
Specifically, after the first flushing mode is finished, the fifth flushing mode is started, the first solenoid valve 81 and the third solenoid valve 83 are controlled to be opened, the second solenoid valve 82, the fourth solenoid valve 84, and the fifth solenoid valve 85 are controlled to be closed, and the sixth solenoid valve 86 is also opened when the sixth solenoid valve 86 is installed on the first return line 6. Starting the booster pump 3, raw water enters the raw water side of the first filter element 4 to implement membrane front washing, and meanwhile, produced pure water flows back to the raw water side of the first filter element through the first return pipeline 6 to continuously participate in washing and water production, so as to implement self-cleaning for the first filter element 4.
The embodiment is suitable for the condition that the quality of raw water is better.
The fifth flush mode may also be scheduled to be performed after the second flush mode.
EXAMPLE six
In this embodiment, it is performed in combination with a water purification system as shown in fig. 3, in which a raw water detecting element 11 is provided in the water inlet line 1 for detecting the quality of raw water.
Based on the water purification system, in the embodiment, according to the quality of raw water detected by the raw water detection element 11, the water purification system is adaptively combined with various flushing modes as given in the first to fifth embodiments, so that the technical effects of increasing the system flux, thoroughly cleaning, effectively prolonging the membrane life and saving power consumption are achieved by adapting the flushing modes according to the quality of water.
Specifically, the raw water quality can be classified: primary water quality (TDS is less than or equal to 100), secondary water quality (100< TDS is less than or equal to 200) and tertiary water quality (TDS is more than or equal to 200); if the raw water quality is first-grade water quality, the combined flushing mode is set as follows: a first flushing mode + a fifth flushing mode, or a first flushing mode + a fourth flushing mode; if the raw water quality is three-level water quality, the combined flushing mode is set as follows: the first flushing mode, the second flushing mode, the fifth flushing mode, etc., and the specific combination conditions or rules may be designed according to actual situations, which is not specifically limited in this embodiment.
Of course, in the above-mentioned embodiment, still install the solenoid valve of intaking on water intake pipe 1 (showing in fig. 1 and fig. 2), can combine the control of intaking and stopping intaking of above-mentioned embodiment to implement according to prior art stack can, the embodiment of the utility model provides an unnecessary redundancy.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the present invention.
Claims (10)
1. A water purification system comprising:
a water inlet pipeline and a pure water outlet pipeline;
a water inlet of the booster pump is connected with the water inlet pipeline;
the water inlet of the first filter element is connected with the water outlet of the booster pump, and the water outlet of the first filter element is connected with the pure water outlet pipeline;
it is characterized by also comprising:
the water inlet of the second filter element is connected with the concentrated water outlet of the first filter element, and the water outlet of the second filter element is connected with the pure water outlet pipeline;
the first return pipeline is connected between the water outlet of the second filter element and the water inlet side of the booster pump;
the first branch pipeline is connected between the water outlet of the first filter element and the water inlet of the second filter element;
the first electromagnetic valve is arranged on the pure water outlet pipeline;
the second electromagnetic valve is arranged on a connecting pipeline between the concentrated water outlet of the first filter element and the water inlet of the second filter element;
the third electromagnetic valve is arranged on a concentrated water outlet pipeline of the first filter element;
and the fourth electromagnetic valve is arranged on the first branch pipeline.
2. The water purification system of claim 1, further comprising:
the fifth electromagnetic valve is arranged on a concentrated water outlet pipeline of the second filter element;
and the concentrated water outlet pipeline of the first filter element is communicated with the concentrated water outlet pipeline of the second filter element, and the communication point is positioned on the water inlet side of the fifth electromagnetic valve.
3. The water purification system of claim 2,
the fifth electromagnetic valve is a combined electromagnetic valve, is fully opened when opened, and is in a wastewater ratio when closed.
4. The water purification system of claim 1, further comprising:
and the sixth electromagnetic valve is arranged on the first return pipeline.
5. The water purification system of claim 4, further comprising:
and the second return pipeline is connected between the water outlet and the water inlet of the second filter element, and a seventh electromagnetic valve is installed on the second return pipeline.
6. The water purification system of claim 1, further comprising:
and the water quality detection element is arranged on the water inlet pipeline.
7. The water purification system of claim 1, further comprising:
the preposed main filter element component is arranged on the water inlet pipeline.
8. The water purification system of claim 1, further comprising:
and the rear main filter element assembly is arranged on the pure water outlet pipeline.
9. The water purification system of claim 1,
the flow ratio of the first filter element to the second filter element is 1:1-3: 1.
10. Water purification apparatus, characterized in that it comprises a water purification system according to any one of claims 1-9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2020114318797 | 2020-12-09 | ||
| CN202011431879 | 2020-12-09 |
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| CN214734886U true CN214734886U (en) | 2021-11-16 |
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| CN202120153716.0U Active CN214734886U (en) | 2020-12-09 | 2021-01-20 | Water purification system and water purification unit |
| CN202110076693.2A Pending CN114602317A (en) | 2020-12-09 | 2021-01-20 | Water purification system and control method thereof |
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| CN202110076693.2A Pending CN114602317A (en) | 2020-12-09 | 2021-01-20 | Water purification system and control method thereof |
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| CN114602317A (en) | 2022-06-10 |
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