CN204569583U - A kind of intelligent pure water is just rinsing and temperature steady flow water-saving type reverse osmosis water purifier - Google Patents
A kind of intelligent pure water is just rinsing and temperature steady flow water-saving type reverse osmosis water purifier Download PDFInfo
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- CN204569583U CN204569583U CN201520221467.9U CN201520221467U CN204569583U CN 204569583 U CN204569583 U CN 204569583U CN 201520221467 U CN201520221467 U CN 201520221467U CN 204569583 U CN204569583 U CN 204569583U
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Abstract
The utility model discloses a kind of intelligent pure water just rinsing and temperature steady flow water-saving type reverse osmosis water purifier, it comprises three grades of preprocessing filter element, topping-up pump, reverse osmosis membrane group, post active carbon, clear water faucet and pressure pot, is characterized in that, it is also provided with intelligent pure water and is just rinsing Jie Shuixitong temperature steady flow Controlling System and Waste Water Treatment; Smart water quality monitor is arranged in the water inlet pipe of three grades of preprocessing filter element; Entering water electromagnetic valve is arranged on three grades between preprocessing filter element and topping-up pump; First smart valve is arranged on the condensed water exit of reverse osmosis membrane group; Three tunnels of pure water outlet by being divided into connection after the first reverse checkvalve of reverse osmosis membrane group, wherein the 3rd tunnel: the original water inlet of pressure pot, high-voltage switch gear, the second smart valve, the second reverse checkvalve and reverse osmosis membrane group forms positive irrigation channel.It is 1:1 that the utility model can realize purifying waste water with the ratio of condensed water; Extend the life-span of RO film.
Description
Technical field
The utility model belongs to water-treatment technology field, relates to water filtration and water treatment technology, specifically, relates to a kind of intelligent pure water and is just rinsing and temperature steady flow water-saving type reverse osmosis water purifier.
Background technology
Reverse osmosis water purifier is the machine mainly utilizing principle of reverse osmosis to carry out water treatment.Reverse osmosis membrane technology applies certain pressure to water, the mineral element of water molecules and ionic state is made to pass through reverse osmosis membrane, and the most inorganic salt (comprising heavy metal) be dissolved in water, organism and bacterium, virus etc. through reverse osmosis membrane, thus cannot make the pure water penetrated and strict the separating of condensed water that cannot penetrate.It is comparatively reasonable that reverse osmosis water purifier generally arranges Pyatyi filtration: the first step is the cotton filter core of PP, and the second stage preposition particle charcoal filter core, the third stage is extruded activated carbon filter core, and the fourth stage is the RO reverse osmosis membrane filter core of core, and level V is post active carbon (little T33).
The emphasis of the routine maintenance of reverse osmosis water purifier mainly concentrates on the routine cleaning of reverse osmosis (RO) film, general employing carries out low-pressure washing under 60psi (4bar) or power condition at low pressure, namely in pressurized vessel, pump into cleaning water from (or suitable water source) purge tank then to emit, run several minutes.Starting scavenging pump pumps in membrane module by scavenging solution, wash cycles about a hour.At initial period, before scavenging solution is back to RO purge tank, initial phegma is emitted, in order to avoid the water be detained in system causes dilution to cleaning solution.In initial 5 minutes, at leisure by flow rate regulation to 1/3 of design maximum flow velocity, at second in 5 minutes, increase flow velocity to 2/3 of design maximum flow velocity, then, then increase the Peak Flow Rate value of flow velocity to design.If needed, when the change of pH is greater than 1, will again adjust back to former numerical value.As required, wash cycles and immersion program can alternately be adopted.Soak time generally selects 1 to 8 hour, will keep suitable temperature and pH modestly.After cleaning is write as, RO can restart to be placed in working procedure, but initial product water will carry out discharging and monitoring, until RO produces water can meet processing requirement.
As mentioned above, traditional reverse osmosis water purifier utilizes former water or waste water flushing, and rinsing like this is effectively to rinse the impurity such as organic colloid, inorganic salt being attached to RO film surface, and the life-span of film can shorten.Meanwhile, traditional reverse osmosis water purifier condensed water discharge capacity is large, and for 50G reverse osmosis water purifier, waste water ratio valve parameter is 420 ml/min, and pure water flow is 130 ml/min, and pure water flow and Concentrate flow are reached for the ratio of 1:3, suitable water wasting.
Reverse osmosis membrane is in former water water temperature lower than less than 10 DEG C, and water production rate obviously declines, thus causes water purification mechanism water overlong time, and even do not shut down, topping-up pump load increases, and affects film work-ing life.
If can design a kind of cleaning being conducive to reverse osmosis (RO) film, extend the life-span of RO film, meanwhile, realizing purifies waste water with the ratio of condensed water is the technical scheme of 1:1 micro-discharge even, will be conducive to solving the problem.
Utility model content
The purpose of this utility model is for prior art Problems existing, by adopting intelligent positive and negative washing water-saving device, extend the life-span of RO film, can realize again purifying waste water with the ratio of condensed water is 1:1, micro-discharge even, thus provide a kind of intelligent pure water just rinsing and temperature steady flow water-saving type reverse osmosis water purifier.
In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:
A kind of intelligent pure water is just rinsing and temperature steady flow water-saving type reverse osmosis water purifier, and it comprises three grades of preprocessing filter element, topping-up pump, reverse osmosis membrane group, post active carbon, clear water faucet and pressure pot, it is also provided with intelligent pure water and is just rinsing Jie Shuixitong temperature steady flow Controlling System and Waste Water Treatment;
Intelligence pure water is just rinsing water-saving system and is comprising smart water quality monitor, entering water electromagnetic valve, the first reverse checkvalve, the first smart valve, the second smart valve, the second reverse checkvalve and high-voltage switch gear, first smart valve comprises flush valve and waste water ratio valve, and smart water quality monitor is arranged in the water inlet pipe of three grades of preprocessing filter element; Entering water electromagnetic valve is arranged on three grades between preprocessing filter element and topping-up pump; First smart valve is arranged on the condensed water exit of reverse osmosis membrane group; Three tunnels of pure water outlet by being divided into connection after the first reverse checkvalve of reverse osmosis membrane group, high-voltage switch gear of leading up to is communicated with pressure pot, the inlet communication of two tunnels and post active carbon, three tunnels are by being communicated with the original water inlet of reverse osmosis membrane group with the second smart valve, the second reverse checkvalve, and the original water inlet of pressure pot, high-voltage switch gear, the second smart valve, the second reverse checkvalve and reverse osmosis membrane group forms positive irrigation channel.
Described temperature steady flow set-up of control system is between three grades of preprocessing filter element and reverse osmosis membrane group, comprise heating component and temperature probe, the outlet of three grades of preprocessing filter element and the inlet communication of heating component, heating component outlet, by the inlet communication of entering water electromagnetic valve, topping-up pump and reverse osmosis membrane group, the pipeline between topping-up pump and reverse osmosis membrane group is provided with temperature probe and flow inductor.
The pipeline of heating component with entering water electromagnetic valve is provided with export and is connected with overheating protection pressure switch, overheating protection pressure switch is communicated with the water-in of micro pump by pipeline, and the water outlet of micro pump is communicated with the water inlet pipe of three grades of preprocessing filter element.
Described Waste Water Treatment comprises smart water quality monitor and return of waste water device, return of waste water pipeline is provided with between the condensed water outlet and topping-up pump of reverse osmosis membrane group, condensed water outlet by after smart water quality monitor respectively valve port intelligent with first be communicated with the water-in of return of waste water device, pipeline between entering water electromagnetic valve and topping-up pump is provided with backflow water-in, and the water outlet of return of waste water device is communicated with this backflow water-in by the 3rd reverse checkvalve.
The utility model beneficial effect:
1, be 1:1 by being realized by Intelligence Stanza Water System purifying waste water with the ratio of condensed water, even higher.
2, by intelligent positive and negative flushing water-saving Systematical control pure water positive back flushing RO film, dilution and punching de-RO film top layer organic colloid, inorganic salt etc., extend the life-span of RO film.
3, by temperature steady flow Controlling System, the thermostat water inlet water temperature that provides applicable reverse osmosis membrane to use can be started lower than the situation of less than 10 DEG C in former water water temperature, the reverse osmosis membrane water improved under low temperature environment reaches a stable flow, shorten the water purification mechanism water time, by pressure before current inductor block controlling diaphragm, reach the work-ing life of voltage stabilization and current stabilization effect and prolongation reverse osmosis membrane.
4, Waste Water Treatment has water-saving and emission-reducing, improves former Water Sproading rate, can reach the effect of micro-discharge.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the control block diagram of the utility model embodiment.
Embodiment
The utility model is by the following examples can the utility model will be further described, but scope of the present utility model is not limited to following embodiment, can carry out various change in the scope not departing from purport of the present utility model.
Embodiment 1: see Fig. 1-2.
The present embodiment water purification system by inlet triplet for water ball valve 1, smart water quality monitor 2, three grades of preprocessing filter element 3, entering water electromagnetic valve 4, topping-up pump 5, reverse osmosis membrane group 6, first reverse checkvalve 7, first smart valve 8, first smart valve 8 comprises flush valve and waste water ratio valve, post active carbon 9, high-voltage switch gear 10, pressure pot 11, second smart valve 12, second reverse checkvalve 13, clear water faucet 14, parts such as intelligent controller 15 grade form.
Tap water accesses water purification system through inlet triplet for water ball valve 1 by water pipe, be provided with smart water quality monitor 2 therebetween, smart water quality monitor 2 is arranged in the water inlet pipe of three grades of preprocessing filter element 3, the rising pipe of three grades of preprocessing filter element 3 divides two-way, and the first via is directly connected with clear water faucet 14 as domestic water; Second tunnel is connected with the water-in of topping-up pump 5 by entering water electromagnetic valve 4, topping-up pump 5 water outlet is divided into two tunnels of connection, the first via of topping-up pump 5 water outlet is connected with the original water inlet of reverse osmosis membrane group 6, the condensed water outlet of reverse osmosis membrane group 6 is discharged by the first smart valve 8, and pure water outlet is communicated with post active carbon 9 with pressure pot 11 respectively; That is:
Three tunnels of pure water outlet by being divided into connection after the first reverse checkvalve 7 of reverse osmosis membrane group 6,
High-voltage switch gear 10 of leading up to is communicated with pressure pot 11, the inlet communication of two tunnels and post active carbon 9, and namely three tunnels are communicated with the original water inlet of reverse osmosis membrane group 6 by being communicated with the second tunnel of topping-up pump 5 water outlet with the second smart valve 12, second reverse checkvalve 13.The original water inlet of pressure pot 11, high-voltage switch gear 10, second smart valve 12, second reverse checkvalve 13 and reverse osmosis membrane group 6 forms positive irrigation channel.
First reverse checkvalve 7 is the check valve of reverse osmosis membrane group 6 toward post active carbon 9, and the import of post active carbon 9 is communicated with pressure pot 11 by high-voltage switch gear 10.
The check valve direction of the second reverse checkvalve 13 is the original water inlet direction of pure water outlet toward reverse osmosis membrane group 6 of pressure pot 11 and reverse osmosis membrane group 6.
The outlet of post active carbon 9 is connected with clear water faucet 14.
Thermostat:
Thermostat by micro pump 82, overheating protection pressure switch 83, heating component 84, entering water electromagnetic valve 4, topping-up pump 5, temperature probe 87, composition such as flow inductor 88 grade.The outlet of three grades of preprocessing filter element 3 and the inlet communication of heating component 84, heating component 84 exports by the inlet communication of entering water electromagnetic valve 4 with reverse osmosis membrane group 6, the pipeline between topping-up pump 5 and reverse osmosis membrane group 6 is provided with temperature probe 87 and flow inductor 88; The pipeline of heating component 84 with entering water electromagnetic valve 4 is provided with to export and is connected with overheating protection pressure switch 83; overheating protection pressure switch 83 is communicated with by the water-in of pipeline with micro pump 82, and the water outlet of micro pump 82 is communicated with the water inlet pipe of three grades of preprocessing filter element 3.
Water treatment procedure:
1, tap water is through first three grade of preprocessing filter element, large granular impurity and the chlorine residue etc. such as filtering silt particle, iron rust, algae, ensures the influent quality of RO.
2, the pretreated water of the third stage can provide as domestic water, meet wash dish, wash one's face and rinse one's mouth, sanitation and hygiene etc.
3, water after pre-treatment, enters RO film through topping-up pump supercharging.
4, pure water is separated with condensed water by former water after RO membrane filtration, and pure water is for subsequent use through reverse checkvalve cut-in pressure bucket, and condensed water is discharged via the first smart valve 8-1.
When clear water faucet 14 is opened, water for subsequent use and the pure water directly after RO membrane filtration in pressure pot 11, pass into post active carbon process, clear water faucet 14 goes out pure water;
Temperature steady flow process: three grades, water source preprocessing filter element 3; enter heating component 84; temp probe 87 before film responds to inflow temperature; when film inflow temperature is less than 10 DEG C, control heating component 84 by intelligent controller 16 and start, by constant for water temperature before film at 25-30 DEG C; when water temperature over-high before film; control overheating protection pressure switch 83 by temperature probe 87, intelligent controller 16, micro pump 82 starts, and prevents water temperature over-high before film.Flow inductor 88 plays does current stabilization effect.
Reverse osmosis membrane is in former water water temperature lower than less than 10 DEG C, and water production rate obviously declines, thus causes water purification mechanism water overlong time, and even do not shut down, topping-up pump load increases, and affects film work-ing life.Therefore, thermostat generally can not run under normal conditions.
Enter RO film to rinse when pure water stores full in pressure pot 11.
RO film flushing process: when pure water stores full in pressure pot 11, entering water electromagnetic valve 4 is closed, flush valve in first smart valve 8 is closed, second smart valve 12 is opened, waste water ratio valve in first smart valve 8 is opened, the pure water that pressure pot is 11 li enters the original water inlet of reverse osmosis membrane group 6 under the effect of pressure pot pressure through the second smart valve 12, pure water is utilized to have strong solvability, from front by reverse osmosis membrane surface impurity (as: iron, magnesium, calcium, plumbous, plasma) dissolve, dissolution time is 5-8 seconds, be preferably 5 seconds, afterwards, second smart valve 12 is closed, flush valve and the waste water ratio valve of the first smart valve 8 are opened, entering water electromagnetic valve 4 is opened, former water passes into the original water inlet end of reverse osmosis membrane group 6 through topping-up pump, the waste water ratio valve of condensed water in RO film by the first smart valve 8 is discharged, former washing time is 8-10 second, be preferably 8 seconds, complete once flushing thus.
Control section is by TDS value, the SDI value of smart water quality monitor 2 Real-Time Monitoring water-purifying machine; When former water TDS value be greater than 500PPM be less than 1000PPM time, 10 minutes rinse once, when former water TDS value is less than 500PPM, within 20 minutes, rinse once, when the SDI of RO film is less than 5, control to rinse once for 20 minutes, when the SDI of RO film is greater than 5, within 10 minutes, rinse once.
Adopt the utility model purging method when guarantee film work-ing life, water-purifying machine can be realized and only take than being 1:1.
Embodiment 2: be also provided with Waste Water Treatment, comprises return of waste water device the 47, three reverse checkvalve 48, and parts such as smart water quality monitor 412 grade form.
The condensed water outlet of reverse osmosis membrane group 6 is discharged by smart water quality monitor 412 and the first smart valve 8, pipeline between smart water quality monitor 412 with the first smart valve 8 is provided with water outlet be communicated with the water-in of return of waste water device 47, pipeline between entering water electromagnetic valve 4 and topping-up pump 5 is provided with backflow water-in, and the water outlet of return of waste water device 47 is communicated with this backflow water-in by the 3rd reverse checkvalve 48.
Through the waste water of reverse osmosis membrane group 6, under the effect of topping-up pump 5, again pass through return of waste water device 47 with the flow of 300ml/min.Mix with former water after the softening desalination of polishing resin through KDF filtrate, weaker concn, enter reverse osmosis membrane group 6 at a high speed, again filter purification.Because the glassware for drinking water entering reverse osmosis membrane group 6 has the feature of lower concentration and high flow rate, thus reduce the generation of concentration polarization in film, extend the work-ing life of film.
After reverse osmosis membrane group 6, wastewater outlet side is provided with smart water quality monitor 412, can respond to the concentration of waste water salt, feed back to the first smart valve 8.When concentration value reaches certain set(ting)value, the first smart valve 8 opens water route, carries out instantaneous discharge, thus reaches flushing reverse osmosis membrane group 6 surface, reduces the effect of salt concn.
By the way, useless only than being reduced to trace waste water discharge by traditional 3:1.
Claims (4)
1. an intelligent pure water is just rinsing and temperature steady flow water-saving type reverse osmosis water purifier, it comprises three grades of preprocessing filter element (3), topping-up pump (5), reverse osmosis membrane group (6), post active carbon (9), clear water faucet (14) and pressure pot (11), is characterized in that, it is also provided with intelligent pure water and is just rinsing Jie Shuixitong temperature steady flow Controlling System and Waste Water Treatment;
Intelligence pure water is just rinsing water-saving system and is comprising smart water quality monitor (2), entering water electromagnetic valve (4), the first reverse checkvalve (7), the first smart valve (8), the second smart valve (12), the second reverse checkvalve (13) and high-voltage switch gear (10), first smart valve (8) comprises flush valve and waste water ratio valve, and smart water quality monitor (2) is arranged in the water inlet pipe of three grades of preprocessing filter element (3); Entering water electromagnetic valve (4) is arranged between three grades of preprocessing filter element (3) and topping-up pump (5); First smart valve (8) is arranged on the condensed water exit of reverse osmosis membrane group (6); Three tunnels of pure water outlet by being divided into connection after the first reverse checkvalve (7) of reverse osmosis membrane group (6), high-voltage switch gear (10) of leading up to is communicated with pressure pot (11), the inlet communication of two tunnels and post active carbon (9), three tunnels are by being communicated with the original water inlet of reverse osmosis membrane group (6) with the second smart valve (12), the second reverse checkvalve (13), and the original water inlet of pressure pot (11), high-voltage switch gear (10), the second smart valve (12), the second reverse checkvalve (13) and reverse osmosis membrane group (6) forms positive irrigation channel.
2. a kind of reverse osmosis water purifier according to claim 1, it is characterized in that, described temperature steady flow set-up of control system is between three grades of preprocessing filter element (3) and reverse osmosis membrane group (6), comprise heating component (84) and temperature probe (87), the outlet of three grades of preprocessing filter element (3) and the inlet communication of heating component (84), heating component (84) outlet is by entering water electromagnetic valve (4), the inlet communication of topping-up pump (5) and reverse osmosis membrane group (6), pipeline between topping-up pump (5) and reverse osmosis membrane group (6) is provided with temperature probe (87) and flow inductor (88).
3. a kind of reverse osmosis water purifier according to claim 2; it is characterized in that; be connected with overheating protection pressure switch (83) with the pipeline of entering water electromagnetic valve (4) being provided with export at heating component (84); overheating protection pressure switch (83) is communicated with by the water-in of pipeline with micro pump (82), and the water outlet of micro pump (82) is communicated with the water inlet pipe of three grades of preprocessing filter element (3).
4. a kind of reverse osmosis water purifier according to claim 1, it is characterized in that, described Waste Water Treatment comprises smart water quality monitor (412) and return of waste water device (47), return of waste water pipeline is provided with between the condensed water outlet and topping-up pump (5) of reverse osmosis membrane group (6), condensed water outlet is by being communicated with the water-in of the first smart valve (8) with return of waste water device (47) respectively after smart water quality monitor (412), pipeline between entering water electromagnetic valve (4) and topping-up pump (5) is provided with backflow water-in, the water outlet of return of waste water device (47) is communicated with this backflow water-in by the 3rd reverse checkvalve (48).
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585075A (en) * | 2015-12-17 | 2016-05-18 | 珠海格力电器股份有限公司 | Water purifying system and flushing method thereof |
| CN106082475A (en) * | 2016-08-04 | 2016-11-09 | 深圳市汉斯顿净水设备有限公司 | A kind of anti-penetration water purifier full-automatic bactericidal cleaning system |
| CN106186193A (en) * | 2016-08-25 | 2016-12-07 | 浙江沁园水处理科技有限公司 | Anti-penetration water purifier |
| CN106673264A (en) * | 2017-01-16 | 2017-05-17 | 宁波瑞克英诺环保科技有限公司 | Little-waste-water energy-saving type RO (reverse osmosis) water purifier |
| CN106698724A (en) * | 2017-01-23 | 2017-05-24 | 浙江美大新能源科技有限公司 | Micro-wastewater-type reverse osmosis water purifier and water purifying and automatic rinsing method thereof |
| CN107055845A (en) * | 2017-06-15 | 2017-08-18 | 浙江光跃环保科技股份有限公司 | The Cistern flushing reverse osmosis membrane system of water purification machine |
| CN107459157A (en) * | 2016-06-02 | 2017-12-12 | 博乐宝科技有限公司 | Intelligent water-saving type anti-penetration water purifier and its process for purifying water with reflux |
| CN107459105A (en) * | 2016-06-02 | 2017-12-12 | 博乐宝科技有限公司 | Big flux, low waste water reverse osmosis water purifier and its process for purifying water with dual pump apparatus |
| CN108569783A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Cross screening system |
| CN108569728A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Cross screening system |
| CN108569781A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Cross screening system |
| CN111661941A (en) * | 2020-06-03 | 2020-09-15 | 深圳市龙浩科技有限公司 | Intelligent water treatment device with water purification backwashing and reclaimed water recycling functions |
| CN114890562A (en) * | 2022-04-29 | 2022-08-12 | 浙江中广饮水科技有限公司 | Reverse osmosis water purifier and waterway system thereof |
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2015
- 2015-04-14 CN CN201520221467.9U patent/CN204569583U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585075A (en) * | 2015-12-17 | 2016-05-18 | 珠海格力电器股份有限公司 | Water purifying system and flushing method thereof |
| CN105585075B (en) * | 2015-12-17 | 2018-11-30 | 珠海格力电器股份有限公司 | Water purification system and its purging method |
| CN107459157A (en) * | 2016-06-02 | 2017-12-12 | 博乐宝科技有限公司 | Intelligent water-saving type anti-penetration water purifier and its process for purifying water with reflux |
| CN107459105A (en) * | 2016-06-02 | 2017-12-12 | 博乐宝科技有限公司 | Big flux, low waste water reverse osmosis water purifier and its process for purifying water with dual pump apparatus |
| CN106082475A (en) * | 2016-08-04 | 2016-11-09 | 深圳市汉斯顿净水设备有限公司 | A kind of anti-penetration water purifier full-automatic bactericidal cleaning system |
| CN106186193A (en) * | 2016-08-25 | 2016-12-07 | 浙江沁园水处理科技有限公司 | Anti-penetration water purifier |
| CN106673264A (en) * | 2017-01-16 | 2017-05-17 | 宁波瑞克英诺环保科技有限公司 | Little-waste-water energy-saving type RO (reverse osmosis) water purifier |
| CN106698724A (en) * | 2017-01-23 | 2017-05-24 | 浙江美大新能源科技有限公司 | Micro-wastewater-type reverse osmosis water purifier and water purifying and automatic rinsing method thereof |
| CN108569783A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Cross screening system |
| CN108569728A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Cross screening system |
| CN108569781A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Cross screening system |
| CN107055845A (en) * | 2017-06-15 | 2017-08-18 | 浙江光跃环保科技股份有限公司 | The Cistern flushing reverse osmosis membrane system of water purification machine |
| CN111661941A (en) * | 2020-06-03 | 2020-09-15 | 深圳市龙浩科技有限公司 | Intelligent water treatment device with water purification backwashing and reclaimed water recycling functions |
| CN114890562A (en) * | 2022-04-29 | 2022-08-12 | 浙江中广饮水科技有限公司 | Reverse osmosis water purifier and waterway system thereof |
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