WO2018161455A1 - 过滤水系统 - Google Patents

过滤水系统 Download PDF

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Publication number
WO2018161455A1
WO2018161455A1 PCT/CN2017/087307 CN2017087307W WO2018161455A1 WO 2018161455 A1 WO2018161455 A1 WO 2018161455A1 CN 2017087307 W CN2017087307 W CN 2017087307W WO 2018161455 A1 WO2018161455 A1 WO 2018161455A1
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WO
WIPO (PCT)
Prior art keywords
water
pipeline
filter element
valve body
pure water
Prior art date
Application number
PCT/CN2017/087307
Other languages
English (en)
French (fr)
Inventor
杨旅
Original Assignee
佛山市顺德区美的饮水机制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201720222524.4U external-priority patent/CN206562358U/zh
Priority claimed from CN201710132132.3A external-priority patent/CN108569781A/zh
Application filed by 佛山市顺德区美的饮水机制造有限公司, 美的集团股份有限公司 filed Critical 佛山市顺德区美的饮水机制造有限公司
Priority to KR1020177023660A priority Critical patent/KR102016703B1/ko
Priority to RU2017132992A priority patent/RU2681035C1/ru
Priority to EP17749593.4A priority patent/EP3392205A4/en
Priority to US15/863,687 priority patent/US10500543B2/en
Publication of WO2018161455A1 publication Critical patent/WO2018161455A1/zh

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/006—Cartridges
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/06—Mounted on or being part of a faucet, shower handle or showerhead
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/10—Location of water treatment or water treatment device as part of a potable water dispenser, e.g. for use in homes or offices

Definitions

  • the present invention relates to the field of household appliances, and in particular to a filtered water system.
  • the filtered water system is only filtered by the primary filter membrane, and the fine filtration treatment is not performed, and the filtration effect is not satisfactory, and direct drinking may affect the health of the body.
  • the pipeline is complicated, the joint is large, and the volume is large.
  • the pure water treated by the multi-stage filter is used as a waste of water for washing clothes, bathing, watering, and the like.
  • the wastewater generated during the filtration process is directly discharged, and the utilization rate is not high, resulting in waste of water resources.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a filtered water system that has the advantages of compact structure and resource saving.
  • a filtered water system includes: a filter element assembly having a water inlet, a purified water outlet, a purified water return port, a pure water outlet, and a sewage outlet; an inlet pipe, the inlet pipe and the inlet a water outlet connected; a water purification pipeline for connecting the purified water outlet and the purified water return outlet, the purified water pipeline having a clean water outer interface and a first for controlling the water purification pipeline to be turned on and off a valve body; a pure water line, the pure water line is in communication with the pure water outlet, and the pure water line has a pure water outer interface and a second valve for controlling the passage of the pure water line a sewage discharge pipe, one end of the sewage pipe is connected to the sewage outlet, and the other end is connected to the outside; and a circulation pipeline, one end of the circulation pipeline is connected with the water purification pipeline, and the other end is The sewage pipeline is in communication, wherein when the filtered water system makes clean water, the purified
  • the filtered water system of the embodiment of the present invention by providing the filter element assembly, the filtered water system can be made compact and the layout of the pipeline can be optimized. Moreover, the water purification pipeline and the pure water pipeline are respectively disposed in the filtered water system, whereby different water outlets can be selected according to different water consumption requirements in the living, the operation is convenient, and waste, energy saving and consumption reduction can be reduced. Moreover, by providing a circulation line on the filtered water system, the wastewater can be recycled, thereby saving water resources.
  • the filtered water system further includes: a pump body assembly for driving water flow in the pure water line, the pump body assembly being disposed on the clean water pipe and located in the purified water Between the outer interface and the purified water return. Thereby, sufficient water pressure can be provided for fine filtration of the water stream.
  • the pump body assembly is a booster pump. Thereby, sufficient water pressure can be provided by the booster pump for fine filtration of the water flow.
  • the first valve body is located upstream of the pump body assembly. Therefore, the water flow control of the filtered water system is facilitated to prevent damage to the filtered water system due to erroneous operation.
  • one end of the circulation line is connected between the first valve body and the pump body assembly.
  • the first valve body is a solenoid valve and the second valve body is a one-way valve.
  • the first valve body is a solenoid valve
  • the second valve body is a one-way valve.
  • the sewage line is provided with a third valve body for controlling its opening and closing.
  • the opening and closing of the sewage line can be controlled by the third valve body, and the size of the wastewater flow can be adjusted by the third valve body.
  • the third valve body is a solenoid valve. Therefore, the sensitivity and accuracy of the third valve body control can be improved.
  • a throttle valve is provided on the circulation line. Thereby, the amount of waste water flow in the circulation line can be controlled by the throttle valve.
  • the filter element assembly includes: a pre-filter cartridge located between the water inlet and the purified water outlet; a fine filter cartridge, the fine filter cartridge being located at the net a water return port; and a rear filter element, the rear filter element is located at the pure water outlet, and the sewage outlet is located between the fine filter element and the rear filter element.
  • the multi-stage filter element can be integrated into the filter element assembly, so that the overall structure of the filtered water system is compact; on the other hand, the filtration effect of the filtered water system can be further improved, and the water quality of the filtered water can be improved.
  • the fine filter element is a reverse osmosis filter or a nanofiltration filter. Therefore, the reverse osmosis membrane can effectively filter out impurities, bacteria and viruses in the water; the nanofiltration membrane filter can reduce the water pressure requirement in the fine filtration process of the filtered water system, thereby saving energy consumption.
  • FIG. 1 is a schematic structural view of a filtered water system according to an embodiment of the present invention, wherein the filtered water system is in a state of obtaining purified water, the dotted line shown in the figure is in a disconnected state, and the direction indicated by the arrow is a water flow in the filtered water system.
  • FIG. 2 is a schematic structural view of a filtered water system according to an embodiment of the present invention, wherein the filtered water system is in a working state of obtaining pure water, the dotted line shown in the figure is in a disconnected state, and the direction indicated by the arrow is a water flow in the filtered water system. The direction of flow.
  • the filter element assembly 10 the water inlet 110, the purified water outlet 120, the purified water return port 130, the pure water outlet 140, the sewage outlet 150,
  • a water purification pipe 30 a water purification external interface 310, a water purification external interface switch 311, a first valve body 320,
  • Pure water pipeline 40 Pure water outer interface 410, pure water outer interface switch 411, second valve body 420,
  • Circulation line 70 Circulation line 70, throttle valve 710.
  • a filtered water system 100 in accordance with an embodiment of the present invention is described below with reference to FIGS. 1 and 2.
  • the filtered water system 100 includes: The filter element assembly 10, the inlet pipe 20, the purified water line 30, the pure water line 40, the drain line 50, and the circulation line 70.
  • the filter element assembly 10 has a water inlet 110, a purified water outlet 120, a purified water return port 130, a pure water outlet 140, and a drain outlet 150.
  • the filter element assembly 10 can be an integrated composite filter element.
  • the cartridge assembly 10 can include a pre-filter, a fine filter cartridge, and a post filter cartridge.
  • the integrated composite filter element can simplify the filtration water system 100, optimize the pipeline layout, and realize the simultaneous replacement of different filter elements, which is convenient to use.
  • the inlet pipe 20 is in communication with the water inlet 110, and the raw water can be filtered from the inlet pipe 20 through the water inlet 110 into the filter element assembly 10.
  • the filtering order of the raw water in the filter element assembly 10 may be: a pre-filter element ⁇ a fine filter element ⁇ a post-filter element.
  • the term "raw water” as used herein may refer to water that flows directly from a faucet, and may also refer to well water or water storage.
  • the purified water pipe 30 communicates with the clean water outlet 120 and the purified water return port 130.
  • the purified water pipe 30 has a clean water outer interface 310 and a first valve body 320 for controlling the water purification pipe 30 to open and close.
  • the pure water line 40 is in communication with the pure water outlet 140, and the pure water line 40 has a pure water outer interface 410 and a second valve body 420 for controlling the passage of the pure water line 40.
  • One end of the drain line 50 communicates with the drain outlet 150, and the other end communicates with the outside.
  • One end of the circulation line 70 is in communication with the purified water line 30, and the other end is in communication with the drain line 50. Thereby, the wastewater flowing out of the waste water line 50 can be partially returned from the circulation line 70 to the purified water line 30 for re-filtration, thereby recycling the waste water and reducing waste of water resources.
  • the purified water pipeline 30 is partially connected, and the pure water pipeline 40, the sewage pipeline 50, and the circulation pipeline 70 are disconnected (as shown in FIG. 1).
  • the dotted line is the disconnected line), and the water flows in the filtered water system 100 in the direction indicated by the arrow: a1 ⁇ a2 ⁇ a3 ⁇ a4.
  • the raw water enters the filter element assembly 10 through the water inlet port 110 to perform preliminary filtration to obtain purified water
  • the purified water flows out of the filter element assembly 10 through the purified water outlet 120, and flows out through the water purification outer interface 310. So, get clean water.
  • the purified water obtained by preliminary filtration can be used as domestic water for washing clothes, watering flowers, bathing, etc.
  • the purified water line 30, the pure water line 40, and the sewage line 50 are connected, and the water flow is in the filtered water system 100 along the arrow: b1 ⁇ b2 ⁇ b3 ⁇ Flows in the direction indicated by b4 ⁇ b5.
  • the first valve body 320 on the purified water line 30 is opened, and the second valve body 420 of the pure water line 40 is opened.
  • the raw water enters the filter element assembly 10 from the inlet pipe 20 through the water inlet 110 for preliminary filtration to obtain purified water.
  • the purified water is discharged from the purified water outlet 120 and returned to the filter element assembly 10 along the purified water return pipe 130 to be finely filtered again.
  • the pure water obtained after the fine filtration flows out from the pure water outlet 140 and passes through the pure water.
  • the line 40 flows out, whereby pure water is obtained.
  • the pure water obtained after fine filtration can be directly consumed.
  • waste water is generated in the process of preparing pure water, and the waste water can be discharged from the sewage outlet 150 and directly discharged out of the filtered water system 100 through the sewage pipeline 50 (the flow shown by the arrow: c50 ⁇ d60 in Fig. 2) Direction); Part of the wastewater may also be returned to the purified water line 30 via the circulation line 70 (in the direction of flow indicated by arrows: c50 ⁇ e60 ⁇ e70 in Fig. 2), and flows into the filter element assembly 10 for filtration again. Thereby, the wastewater is recycled and water resources are saved.
  • the filtered water system 100 can be made compact and the layout of the pipeline can be optimized. Moreover, the water purification pipeline 30 and the pure water pipeline 40 are respectively disposed in the filtered water system 100, whereby different water outlets can be selected according to different water needs in life, which is convenient to operate, and can reduce waste and save energy. Reduce consumption. Moreover, by providing a circulation loop on the filtered water system 100, the wastewater can be recycled, thereby saving water resources.
  • the filtered water system 100 may further include: a pump body assembly 60 for driving water flow in the pure water line 40, the pump body assembly 60 being disposed in the net
  • the water line 30 is located between the clean water outer interface 310 and the clean water return port 130.
  • the water flow pressure can be increased by the pump body assembly 60, which is advantageous for improving the filtration efficiency of the filtered water system 100.
  • the purified water needs to be finely filtered, the purified water needs to reach a certain water pressure, and by providing the pump body assembly 60 between the purified water outer interface 310 and the purified water return port 130, the purified water flow can be increased.
  • the water pressure is such that the purified water flow flows into the filter element assembly 10 for fine filtration.
  • the pump body assembly 60 can be a booster pump.
  • a booster pump By providing a booster pump, sufficient water pressure can be provided for the purified water flow for the clean water to flow through the filter cartridge assembly 10 for fine filtration.
  • the first valve body 320 is located upstream of the pump body assembly 60.
  • the on/off of the water passage can be controlled in time by controlling the first valve body 320.
  • upstream may refer to the upstream as understood in the direction of water flow when preparing pure water as shown in FIG. It can be understood that when the first valve body 320 is closed, the pure water water path is in an off state (as shown by the dotted line in FIG. 1); when the first valve body 320 is opened, as shown in FIG. 2, pure The water line 40 is in a connected state. Providing the first valve body 320 upstream of the pump body assembly 60 prevents damage to the filtered water system 100 due to erroneous operation.
  • the first valve body 320 is disposed downstream of the pump body assembly 60, when the first valve body 320 is closed and the pump body assembly 60 is not closed, the water flow after being pressurized by the pump body assembly 60 is liable to cause cracking of the pipeline. The filtered water system 100 is damaged.
  • the first valve body 320 and the pump body assembly 60 are disposed between the purified water outlet 120 and the purified water return port 130 before the water flow flows into the first valve body 320 and the pump body assembly 60.
  • Initial filtration is required within the cartridge assembly 10. Thereby, large particle impurities in the raw water can be prevented from flowing into the first valve body 320 and the pump body assembly 60, damaging the first valve body 320 and the pump body assembly 60, thereby protecting the first valve body 320 and the pump body assembly 60.
  • the service life of the first valve body 320 and the pump body assembly 60 is extended.
  • one end of the circulation line 70 is coupled between the first valve body 320 and the pump body assembly 60. As shown in FIG. 2, the downstream connection end of the circulation line 70 is connected between the first valve body 320 and the pump body assembly 60.
  • downstream of the recycle line 70 may refer to the downstream of water as understood in the direction of flow in the recycle line 70, as shown in FIG.
  • part of the generated wastewater can be returned to the purified water pipe 30 through the circulation line 70, and can be pressurized by the pump body assembly 60, and the pressurized water can flow again into the water.
  • the inside of the filter element assembly 10 is again filtered to make full use of the waste water.
  • the first valve body 320 is disposed upstream of the return end of the circulation line 70 to facilitate control of the filtered water system 100. For example, when the first valve body 320 is closed, the waterway system downstream of the first valve body 320 can be shut off in time (as shown by the broken line in FIG. 1).
  • the first valve body 320 may be a solenoid valve.
  • the solenoid valve is operated accurately and reliably, which is advantageous for improving the reliable stability of the operation of the filtered water system 100; on the other hand, the solenoid valve can be lightened or opened relative to the manual valve. This physical exertion when the first valve body 320 is closed is advantageous for improving the overall performance of the filtered water system 100.
  • the second valve body 420 may be a one-way valve.
  • the second valve body 420 adopts a one-way valve, so that the pure water flowing out of the pure water pipe 40 can flow in one direction, that is, from the pure water outlet 140 to the pure water outer port 410 (the flow direction shown by the arrow b5 in FIG. 2) ).
  • the checkwater system 100 can be feedback controlled using a one-way valve.
  • a pure water outer interface switch 411 can be disposed at the pure water outer interface 410 of the pure water pipeline 40, and the second valve body 420 can be set as a one-way valve high-voltage switch, a one-way valve high-voltage switch.
  • the pressure change downstream of the check valve can be detected and the pressure change signal can be fed back to the system, and the system can adjust the on and off of the first valve body 320 and the pump body assembly 60 according to the feedback signal.
  • the check valve high pressure switch detects that the downstream water pressure becomes large, so that the system can cut off the first valve body 320 and the pump according to the water pressure increase signal.
  • the body assembly 60 switches to cut off the pure water line 40, and the clean water flow can flow out from the clean water outer interface 310; as shown in FIG. 2, when the pure water outer interface switch 411 is opened, the check valve high pressure switch detects the downstream The water pressure is reduced, and the system opens the first valve body 320 and the pump body assembly 60 according to the water pressure reduction signal. At this time, the water purification outer interface switch 311 is closed to prepare and use pure water.
  • the drain line 50 is provided with a third valve body 510 for controlling its opening and closing.
  • the sewage pipe 50 can be cut or connected by providing the third valve body 510, and the flow rate of the wastewater can be adjusted.
  • the size of the wastewater flow can be controlled by the third valve body 510.
  • the third valve body 510 is controlled to increase the wastewater flow rate, and the pure water outer interface switch 411 and the clean water outer interface switch 311 are closed, at this time, as shown in FIG. 2, the water flow in the filtered water system 100 can be as shown in the figure.
  • the arrow flows in the direction indicated by b1 ⁇ b2 ⁇ b3 ⁇ c4 ⁇ c5. It should be noted that in the process of fine filtration, impurities are accumulated in the fine filter element, and after long time use, the impurities on the fine filter element are accumulated more. Thus, by adjusting the wastewater water flow and closing The pure water outer interface switch 411 and the clean water outer interface switch 311 can flush and clean the fine filter element. Thereby, the fine filter element can be protected and the service life of the fine filter element can be extended.
  • the third valve body 510 may be a solenoid valve. Thereby, the on and off of the third valve body 510 can be conveniently and accurately controlled. It should be noted that the third valve body 510 may be in a non-energized state when the purified water and the pure water are normally prepared. When the third valve body 510 is in different electrical states, the third valve body 510 is provided with a small flow through hole, on the one hand, the water pressure required for the pure water preparation of the filtered water system 100 can be maintained; on the other hand, the pure water can be discharged. Waste water produced. When the fine filter element needs to be cleaned, the third valve body 510 can be energized to open the third valve body 510. At this time, the pure water outer interface switch 411 and the clean water outer interface switch 311 are closed, thereby increasing the size. The wastewater flow rate can increase the throughput of the wastewater to clean the fine filter element.
  • a throttle valve 710 is provided on the circulation line 70.
  • the amount of waste water flow in the circulation line 70 can be controlled by the throttle valve 710.
  • the third valve body 510 can be adjusted down and the throttle valve 710 can be adjusted to increase the flow rate of the wastewater in the circulation line 70 to improve the utilization rate of the wastewater;
  • the third valve body 510 can be adjusted, and the throttle valve 710 can be adjusted to be small or closed, so that the flow rate of the waste water in the circulation line 70 is reduced, so as to prevent the excessive waste water from returning to the water purification pipe 30. Damage to the pump body assembly 60 and the filter element assembly 10 affects the normal operation of the filtered water system 100.
  • the cartridge assembly 10 may include a pre-filter, a fine filter cartridge, and a post-filter cartridge.
  • the pre-filter element is located between the water inlet 110 and the purified water outlet 120, and the pre-filter element can filter out large particle impurities in the raw water to obtain purified water.
  • the purified water can be used as domestic water for washing clothes and watering flowers.
  • the fine filter element is located at the water purification water inlet 130. The fine filter element can further filter the purified water and filter out fine impurities in the water, such as excessive inorganic salts, organic substances, heavy metal ions, bacteria, viruses, pesticides, and chloroform.
  • a rear filter element is further disposed at the pure water outlet 140, and the sewage outlet 150 is located between the fine filter element and the rear filter element.
  • the water passing through the fine filter element is further filtered through the post filter.
  • the rear filter element can use activated carbon.
  • the activated carbon can utilize a large amount of internal fiber voids to adsorb pigments and odors in the water; on the other hand, it can also add fruit flavor to the activated carbon, thereby passing through the rear filter element.
  • the pure water is clean and safe, and the taste is improved.
  • the fine filter element may be a reverse osmosis filter or a nanofiltration filter. That is to say, the fine filter element can be selected to use a reverse osmosis filter or a nanofiltration filter.
  • the reverse osmosis filter has a very small pore size, and the pore size can reach one millionth (0.0001 micrometer) of the hair filament. Only water molecules and some mineral ions can pass, so the impurities in the water can be effectively filtered. , bacteria and viruses.
  • the water flow has a characteristic of flowing from a low concentration to a high concentration without being subjected to an external force. Therefore, it is necessary to apply enough water to the water flow.
  • Nanofiltration membrane nanofiltration has a pore size range of about several nanometers. Nanofiltration is a pressure-driven membrane separation process between reverse osmosis and ultrafiltration. The nanofiltration membrane filter can reduce the fineness of the filtered water system 100. The water pressure requirement during the filtration process saves energy.
  • the pump body assembly 60 may not be disposed between the water purification external interface 310 and the purified water return port 130, and the third valve body 510 on the sewage pipeline 50 may be configured as a waste water manual valve, and the water purification external interface switch 311 is a clean water manual valve, and the pure water outer interface switch 411 can be selected as a pure water manual valve, the first valve body 320 is a manual first valve body, and the second valve body 420 is a manual second valve body. Therefore, during the use of the filtered water system 100, it is possible to eliminate the need for a power device such as a pump, and only need to adjust the clean water manual valve, the pure water manual valve, the manual first valve body, the manual second valve body, and the waste water manual valve. It can be closed, and thus achieve the purpose of saving electricity and reducing costs.
  • the clean water manual valve can be opened, and the pure water manual valve is kept in the closed state, the raw water is filtered through the filter element assembly 10, and flows out from the purified water outlet 120, and passes through the purified water pipe 30.
  • the water external interface 310 flows out for the user to use, and basically no waste water is generated, and the waste water manual valve can be kept in a closed state; when pure water is required, the pure water manual valve, the waste water manual valve, the manual first valve body and Manually installing the second valve body and keeping the clean water manual valve closed, the raw water can be infiltrated into the fine filter element by its own pressure for filtration, and flows out of the filter element assembly 10 from the pure water outlet 140, and finally passes through the pure water line 40 from the pure
  • the water outlet port 410 flows out for use by the user, and the wastewater flows out through the drain line 50.
  • a filtered water system 100 in accordance with an embodiment of the present invention will now be described in detail with reference to Figures 1 and 2 in two specific embodiments. It is to be understood that the following description is only illustrative and not restrictive.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the filtered water system 100 includes a filter element assembly 10, an inlet pipe 20, a purified water line 30, a pure water line 40, a drain line 50, and a circulation line 70.
  • the filter element assembly 10 has a water inlet 110, a purified water outlet 120, a purified water return port 130, a pure water outlet 140, and a drain outlet 150.
  • the filter element assembly 10 is an integrated composite filter element, and the filter element assembly 10 includes a front filter element, a fine filter element and a rear filter element.
  • the pre-filter element is located between the water inlet 110 and the purified water outlet 120.
  • the fine filter element is a reverse osmosis membrane filter and is located at the purified water return port 130, and the rear filter element is located at the pure water outlet 140.
  • the inlet pipe 20 is in communication with the water inlet 110, one end of the water purification pipe 30 is connected to the purified water outlet 120, and the other end of the purified water pipe 30 is connected to the purified water return port 130.
  • the purified water pipeline 30 is provided with a clean water outer interface 310 and a first valve body 320 for controlling the water purification pipeline 30 to open and close, and a pump body assembly 60 for driving the water flow in the pure water pipeline 40, the pump body The assembly 60 is disposed between the first valve body 320 and the purified water return port 130.
  • the first valve body 320 is a solenoid valve
  • the pump body assembly 60 is a booster pump
  • a water purification outer interface switch 311 is further disposed at the water purification outer interface 310.
  • a pure water pipe 40 is connected to the pure water outlet 140.
  • the pure water pipe 40 is provided with a pure water outer port 410 and a second valve body 420 for controlling the passage of the pure water pipe 40, wherein the second valve
  • the body 420 is a one-way valve, and a pure water outer interface switch 411 is further disposed at the pure water outer interface 410.
  • One end of the sewage line 50 communicates with the sewage outlet 150, and the other end communicates with the outside.
  • the sewage line 50 is provided with a third valve body 510 for controlling its opening and closing, and the third valve body 510 is a solenoid valve.
  • One end of the circulation line 70 is in communication with the sewage line 50, and the other end of the circulation line 70 is located between the first valve body 320 and the pump body assembly 60.
  • a throttle valve 710 is disposed on the circulation line 70.
  • the clean water external interface switch 311 is opened, the purified water pipeline 30 is partially connected, and the first valve body 320 and the pump body assembly 60 are in a closed state, pure water.
  • the line 40 and the drain line 50 are disconnected (as shown in Figure 1 for the pure water line 40 and the drain line 50 are dashed), and the water flow is within the filtered water system 100 along the arrow shown in Figure 1: a1 ⁇ a2 ⁇ a3 ⁇
  • the direction indicated by a4 flows.
  • the raw water enters the filter element assembly 10 from the inlet pipe 20 through the water inlet 110, and is pre-filtered through the pre-filter to obtain purified water.
  • the purified water flows out of the filter element assembly 10 through the purified water outlet 120 and passes through the purified water.
  • the interface 310 flows out, whereby the purified water can be used as domestic water for washing clothes, watering flowers, and the like.
  • the clean water outer interface switch 311 When the filtered water system 100 produces pure water, as shown in FIG. 2, the clean water outer interface switch 311 is closed, and the pure water outer interface switch 411 is opened.
  • the second valve body 420 detects the downstream water pressure drop and transmits a water pressure reduction signal to the system, and the system controls the first valve body 320 and the pump body assembly 60 to open, and the water is cleaned.
  • the line 30, the pure water line 40, and the drain line 50 are in communication.
  • the clean water outer interface 310 is disconnected (as indicated by the dashed line at the clean water outer interface 310 in FIG. 2).
  • the water flow flows in the filtered water system 100 in the direction indicated by the arrow: b1 ⁇ b2 ⁇ b3 ⁇ b4 ⁇ b5.
  • the raw water enters the filter element assembly 10 from the inlet pipe 20 through the water inlet 110, and is preliminarily filtered through the pre-filter to obtain purified water.
  • the purified water is discharged from the purified water outlet 120 and returned to the cartridge assembly 10 from the purified water return port 130 along the purified water line 30 through the first valve body 320 and the pump body assembly 60.
  • the pump body assembly 60 can pressurize the purified water flow, and the pressurized purified water flow is returned from the purified water return port 130 to the filter element assembly 10 and further filtered through the fine filter element, and filtered again by the rear filter element. Further, the water quality is improved and the water quality is improved.
  • the finally obtained pure water flows out from the pure water outlet 140 and flows out through the pure water pipe 40, whereby pure water can be used as drinking water or for cooking.
  • waste water is generated in the process of preparing pure water, and the waste water can be discharged from the sewage outlet 150 and directly discharged out of the filtered water system 100 through the sewage pipeline 50 (the flow shown by the arrow: c50 ⁇ d60 in Fig. 2) Direction))
  • Part of the wastewater may also be returned to the purified water line 30 through the circulation line 70 (in the flow direction shown by the arrow: c50 ⁇ e60 ⁇ e70 in Fig. 2), and flows into the filter element assembly 10 to be filtered again.
  • the wastewater is recycled Utilization saves water resources.
  • the filtered water system 100 can be made compact and the layout of the pipeline can be optimized. Moreover, the water purification pipeline 30 and the pure water pipeline 40 are respectively disposed in the filtered water system 100, whereby different water outlets can be selected according to different water needs in life, which is convenient to operate, and can reduce waste and save energy. Reduce consumption. Moreover, by providing the circulation line 70 on the filtered water system 100, the waste water can be recycled, thereby saving water resources.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the pump body assembly 60 is eliminated between the clean water outer interface 310 and the clean water return port 130, and the third valve body 510 on the sewage line 50 is set as a waste water manual valve.
  • the water purification external interface switch 311 is a clean water manual valve, and the pure water outer interface switch 411 can be selected as a pure water manual valve, the first valve body 320 is a manual first valve body, and the second valve body 420 is a manual second valve body. .
  • the clean water manual valve can be opened, and the pure water manual valve is kept in the closed state, the raw water is filtered through the filter element assembly 10, and flows out from the purified water outlet 120, and is passed through the purified water pipe 30 from the purified water.
  • the interface 310 flows out for the user to use.
  • the waste water manual valve can be kept in a closed state; when pure water is required, the pure water manual valve, the waste water manual valve, the manual first valve body and the manual first can be opened.
  • the two valve body and the clean water manual valve are kept closed, the raw water can be infiltrated into the fine filter element by its own pressure for filtration, and flows out of the filter element assembly 10 from the pure water outlet 140, and finally passes through the pure water line 40 from the pure water.
  • the interface 410 flows out for use by the user, and the wastewater flows out through the drain line 50.
  • the filtered water system 100 can be used without using a pump or the like during use, and only needs to adjust the water purification manual valve, the pure water manual valve, the manual first valve body, the manual second valve body, and the waste water manual valve.
  • the opening and closing can be achieved, thereby achieving the purpose of saving electricity and reducing costs.

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Abstract

一种过滤水系统（100），包括：滤芯组件（10）、进水管（20）、净水管路（30）、纯水管路（40）、排污管路（50）和循环管路（70）。其中滤芯组件（10）具有进水口（110）、净水出口（120）、净水回水口（130）、纯水出口（140）和排污口（150）。净水管路（30）连通净水出口（120）和净水回水口（130），且净水管路（30）具有净水外接口（310）和用于控制净水管路通断的第一阀体（320）。纯水管路（40）与纯水出口（140）连通，且纯水管路（40）具有纯水外接口（410）和用于控制纯水管路（40）通断的第二阀体（420）。排污管路（50）的一端与排污口（150）连通，另一端与外界连通。循环管路（70）的一端与净水管路（30）连通，另一端与排污管路（50）连通。

Description

过滤水系统 技术领域
本发明涉及家用电器技术领域，具体而言，尤其涉及一种过滤水系统。
背景技术
相关技术中，过滤水系统仅采用一级滤膜过滤，没有经过精细过滤处理，过滤效果不理想，直接饮用会影响身体健康。相关技术中，采用多级滤芯的过滤水系统中，存在管路复杂、接头较多、体积大的缺点。而且经过多级滤芯处理后的纯净水作为清洗衣物、沐浴、浇花等生活用水时，造成了浪费。而且，在过滤过程中产生的废水直接排掉，利用率不高，造成了水资源的浪费。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种过滤水系统，所述过滤水系统具有结构紧凑，节约资源的优点。
根据本发明实施例的过滤水系统，包括：滤芯组件，所述滤芯组件具有进水口、净水出口、净水回水口、纯水出口和排污口；进水管，所述进水管与所述进水口连通；用于连通所述净水出口和所述净水回水口的净水管路，所述净水管路具有净水外接口和用于控制所述净水管路通断的第一阀体；纯水管路，所述纯水管路与所述纯水出口连通，且所述纯水管路具有纯水外接口和用于控制所述纯水管路通断的第二阀体；排污管路，所述排污管路的一端与所述排污口连通，另一端与外界连通；和循环管路，所述循环管路的一端与所述净水管路连通，另一端与所述排污管路连通，其中，当所述过滤水系统制净水时，所述净水管路连通，所述纯水管路断开；当所述过滤水系统制纯水时，所述净水管路、所述纯水管路以及所述排污管路连通。
根据本发明实施例的过滤水系统，通过设置滤芯组件，可以使过滤水系统结构紧凑，优化管路的布局。而且，在该过滤水系统中分别设置有净水管路和纯水管路，由此，可以根据生活中不同的用水需求选择不同的水质出口，操作方便，而且可以减轻浪费，节能减耗。而且，通过在过滤水系统上设置循环管路，可以使废水得到循环利用，从而节约了水资源。
根据本发明的一些实施例，过滤水系统还包括：用于驱动所述纯水管路内水流动的泵体组件，所述泵体组件设在所述净水管路上且位于所述净水外接口与所述净水回水口之间。由此，可以为水流进行精细过滤提供足够的水压。
根据本发明的一些实施例，所述泵体组件为增压泵。由此，可以通过增压泵为水流进行精细过滤提供足够的水压。
根据本发明的一些实施例，所述第一阀体位于所述泵体组件的上游。由此，便于过滤水系统的水流控制，防止因误操作后导致过滤水系统的损坏。
根据本发明的一些实施例，所述循环管路的一端连接在所述第一阀体和所述泵体组件之间。由此，可以提高第一阀体对整体过滤水系统的控制效果，并可利用泵体组件对循环管路中返回至净水管路中的废水进行增压，以使水流再次流入到滤芯组件进行再次过滤。
根据本发明的一些实施例，所述第一阀体为电磁阀，所述第二阀体为单向阀。由此，通过将第一阀体设置为电磁阀，可以提高第一阀体操作的精确性和灵敏性，便于第一阀体的控制。通过将第二阀体设置为单向阀，可以使纯水管路中的水流单向流动。
根据本发明的一些实施例，所述排污管路上设有用于控制其通断的第三阀体。由此，可以通过第三阀体控制排污管路的通断，并可以通过第三阀体调节废水流量的大小。
根据本发明的一些实施例，所述第三阀体为电磁阀。由此，可以提高第三阀体控制的灵敏度和精确度。
根据本发明的一些实施例，所述循环管路上设有节流阀。由此，可以通过节流阀对循环管路中废水流量的大小进行控制。
根据本发明的一些实施例，所述滤芯组件包括：前置滤芯，所述前置滤芯位于所述进水口和所述净水出口之间；精细过滤滤芯，所述精细过滤滤芯位于所述净水回水口处；和后置滤芯，所述后置滤芯位于所述纯水出口处，所述排污口位于所述精细过滤滤芯和所述后置滤芯之间。由此，一方面可以使多级滤芯整合在滤芯组件内，使过滤水系统整体结构紧凑；另一方面，可以进一步提高过滤水系统的过滤效果，提高过滤水的水质。
根据本发明的一些实施例，所述精细过滤滤芯为反渗透滤芯或纳滤膜滤芯。由此，采用反渗透膜可以有效地过滤掉水中的杂质、细菌和病毒等；采用纳滤膜滤芯可以降低过滤水系统中精细过滤过程中对水压的要求，从而可以节省能耗。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明实施例的过滤水系统的结构示意图，其中过滤水系统处于制取净水工作状态，图中所示的虚线线路为断开状态，箭头所示方向为水流在过滤水系统的流动方向；
图2是根据本发明实施例的过滤水系统的结构示意图，其中过滤水系统处于制取纯水工作状态，图中所示的虚线线路为断开状态，箭头所示方向为水流在过滤水系统的流动方向。
附图标记：
过滤水系统100，
滤芯组件10，进水口110，净水出口120，净水回水口130，纯水出口140，排污口150，
进水管20，
净水管路30，净水外接口310，净水外接口开关311，第一阀体320，
纯水管路40，纯水外接口410，纯水外接口开关411，第二阀体420，
排污管路50，第三阀体510，
泵体组件60,
循环管路70,节流阀710。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
下面参考图1和图2描述根据本发明实施例的过滤水系统100。
如图1和图2所示，根据本发明实施例的过滤水系统100，过滤水系统100包括： 滤芯组件10、进水管20、净水管路30、纯水管路40、排污管路50和循环管路70。
具体而言，如图1和图2所示，滤芯组件10具有进水口110、净水出口120、净水回水口130、纯水出口140和排污口150。需要说明的是，滤芯组件10可以为一体化复合滤芯。例如，滤芯组件10可以包括：前置滤芯、精细过滤滤芯和后置滤芯。采用一体化复合滤芯，可以简化过滤水系统100，优化管路布局，而且可以实现同步更换不同滤芯，使用方便。进水管20与进水口110连通，原水可以从进水管20经过进水口110进入到滤芯组件10内进行过滤。例如，原水在滤芯组件10内的过滤顺序可以为：前置滤芯→精细过滤滤芯→后置滤芯。这里所述的“原水”可以是指从水龙头直接流出的水，也可以是指井水或储水等。净水管路30连通净水出口120和净水回水口130，净水管路30具有净水外接口310和用于控制净水管路30通断的第一阀体320。纯水管路40与纯水出口140连通，且纯水管路40具有纯水外接口410和用于控制纯水管路40通断的第二阀体420。
排污管路50的一端与排污口150连通，另一端与外界连通。循环管路70的一端与净水管路30连通，另一端与排污管路50连通。由此，从废水管路50中流出的废水，可以部分从循环管路70返回至净水管路30进行再次过滤，从而，使废水得到重复利用，减少了水资源的浪费。
其中，当过滤水系统100制净水时，如图1所示，净水管路30部分连通，纯水管路40、排污管路50和循环管路70断开(如图1中所示的虚线管路为断开管路)，水流在过滤水系统100内沿箭头：a1→a2→a3→a4所示的方向流动。如图1所示，原水从进水管20经过进水口110进入到滤芯组件10内进行初步过滤得到净水，净水经过净水出口120流出滤芯组件10，并经过净水外接口310流出，由此，得到净水。经过初步过滤得到的净水可以作为清洗衣物、浇花、沐浴等生活用水。
当过滤水系统100制纯水时，如图2所示，净水管路30、纯水管路40以及排污管路50连通，水流在过滤水系统100内沿箭头：b1→b2→b3→b4→b5所示的方向流动。如图2所示，制备纯水时，净水管路30上的第一阀体320打开，纯水管路40的第二阀体420打开。原水从进水管20经过进水口110进入到滤芯组件10进行初步过滤，得到净水。净水从净水出口120排出并沿净水管路30从净水回水口130返回至滤芯组件10再次进行精细过滤，经过精细过滤后得到的纯水从纯水出口140流出，并经过纯水管路40流出，由此，得到纯水。经过精细过滤后得到的纯水可以直接饮用。
需要说明的是，在制备纯水的过程中会产生废水，废水可以从排污口150排出后，经过排污管路50直接排出过滤水系统100(如图2中箭头：c50→d60所示的流动方向)； 部分废水也可以经过循环管路70返回至净水管路30中(如图2中箭头：c50→e60→e70所示的流动方向)，并流入至滤芯组件10内再次进行过滤。由此，使废水得到了循环利用，节约了水资源。
根据本发明实施例的过滤水系统，通过设置滤芯组件10，可以使过滤水系统100结构紧凑，优化管路的布局。而且，在该过滤水系统100中分别设置有净水管路30和纯水管路40，由此，可以根据生活中不同的用水需求选择不同的水质出口，操作方便，而且可以减轻浪费，节能减耗。而且，通过在过滤水系统100上设置循环回路，可以使废水得到循环利用，从而节约了水资源。
在本发明的一些实施例中，如图1和图2所示，过滤水系统100还可以包括：用于驱动纯水管路40内水流动的泵体组件60，泵体组件60设在净水管路30上且位于净水外接口310与净水回水口130之间。由此，可以通过泵体组件60可以增加水流压力，有利于提高过滤水系统100的过滤效率。需要说明的是，当净水需要进行精细过滤时，需要净水达到一定的水压，通过在净水外接口310和净水回水口130之间设置泵体组件60，可以增加净水水流的水压，以使净水水流流入滤芯组件10进行精细过滤。
进一步地，泵体组件60可以为增压泵。由此，通过设置增压泵可以为净水水流提供足够的水压，以供净水水流穿过滤芯组件10进行精细过滤。
可选地，第一阀体320位于泵体组件60的上游。由此，可以通过控制第一阀体320及时控制水路的通断。这里所述的“上游”可以是指如图2所示，在制备纯水时，按照水流方向所理解的上游。可以理解的是，当第一阀体320关闭时，纯水水路处于断开状态(如图1中所示的虚线管路)；当第一阀体320打开时，如图2所示，纯水管路40处于连通状态。将第一阀体320设置在泵体组件60的上游，可以防止因误操作造成过滤水系统100损坏。例如，若将第一阀体320设置在泵体组件60的下游，当第一阀体320关闭而泵体组件60未关闭时，经泵体组件60加压后的水流容易导致管路的崩裂而损坏过滤水系统100。
另外，如图2所示，将第一阀体320和泵体组件60设置在净水出口120和净水回水口130之间，水流在流入到第一阀体320和泵体组件60之前，需要在滤芯组件10内进行初步过滤。由此，可以防止原水中的大颗粒杂质流入到第一阀体320和泵体组件60中，损坏第一阀体320和泵体组件60，从而保护了第一阀体320和泵体组件60，延长了第一阀体320和泵体组件60的使用寿命。
在本发明的一些实施例中，循环管路70的一端连接在第一阀体320和泵体组件60之间。如图2所示，循环管路70的下游连接端连接在第一阀体320和泵体组件60之间。 这里所述的“循环管路70的下游”可以是指图2中所示，废水在循环管路70中流动方向所理解的下游。由此，在制备纯水的过程中，产生的部分废水可以经过循环管路70返回至净水管路30中，并可以经过泵体组件60进行增压，增压后的水流可以再次流入到滤芯组件10内进行再次过滤，使废水得到充分利用。将第一阀体320设置在循环管路70回水端的上游，有利于过滤水系统100的控制。例如，当关闭第一阀体320时，可以及时切断第一阀体320下游的水路系统(如图1中虚线管路所示)。
根据本发明的一些实施例，第一阀体320可以为电磁阀。通过将第一阀体320设置为电磁阀，一方面，电磁阀操作精确、可靠，有利于提高过滤水系统100运行的可靠稳定性；另一方面，电磁阀相对于手动阀门，可以减轻打开或这关闭第一阀体320时的体力劳作，有利于提高过滤水系统100的整体性能。
可选地，第二阀体420可以为单向阀。第二阀体420采用单向阀，可以使从纯水管路40流出的纯水单向流动，即从纯水出口140流向纯水外接口410(如图2中箭头b5所示的流动方向)。而且，在本发明的一些示例中，可以采用单向阀对过滤水系统100进行反馈控制。如图1和图2所示，在纯水管路40的纯水外接口410处可以设置纯水外接口开关411，第二阀体420可以设置为单向阀高压开关，单向阀高压开关可以检测单向阀下游的压力变化，并将压力变化信号反馈至系统，系统可以根据反馈信号调整第一阀体320和泵体组件60的通断。
例如，如图1所示，当纯水外接口开关411关闭时，单向阀高压开关检测到下游的水压变大，从而系统可以根据水压变大的信号切断第一阀体320和泵体组件60开关，从而切断纯水管路40，净水流可以从净水外接口310流出；如图2所示，当纯水外接口开关411打开时，单向阀高压开关检测到下游的水压减小，系统根据水压降低的信号打开第一阀体320和泵体组件60，此时，关闭净水外接口开关311，进行纯水的制备和使用。
在本发明的一些实施例中，排污管路50上设有用于控制其通断的第三阀体510。由此，通过设置第三阀体510可以切断或连通排污管路50，还可以对废水的流量大小进行调节。值得理解的是，通过第三阀体510可以控制废水流量的大小。例如，当通过控制第三阀体510调小废水流量时，可以使水流具有足够的水压进行精细过滤。而当通过控制第三阀体510调大废水流量，并且关闭纯水外接口开关411和净水外接口开关311，此时，如图2所示，过滤水系统100中的水流可以按照图中箭头：b1→b2→b3→c4→c5所示的方向流动。需要说明的是，在精细过滤的过程中，会在精细过滤滤芯处积累杂质，长时间使用后，精细过滤滤芯上的杂质积累较多。由此，通过调大废水水路流量并关闭 纯水外接口开关411和净水外接口开关311，可以对精细过滤滤芯进行冲刷清洗。由此，可以保护精细过滤滤芯，延长精细过滤滤芯的使用寿命。
进一步地，第三阀体510可以为电磁阀。由此，可以方便精确的控制第三阀体510的通断。需要说明的是，在正常制备净水和纯水时，第三阀体510可以处于不通电状态。当第三阀体510处于不同电状态时，第三阀体510开有小流量通孔，一方面可以维持过滤水系统100制备纯水时所需的水压；另一方面可以排出制备纯水时产生的废水。当需要对精细过滤滤芯进行清洗时，可以对第三阀体510通电，使第三阀体510处于敞开状态，此时，关闭纯水外接口开关411和净水外接口开关311，从而调大废水流量，可以提高废水的流通量，以对精细过滤滤芯进行清洗处理。
根据本发明的一些实施例，循环管路70上设有节流阀710。由此，可以通过节流阀710控制循环管路70中废水流量的大小。例如，当原水的水质较好时，可以调小第三阀体510并调大节流阀710，使循环管路70中的废水流量增大，以提高废水的利用率；当原水的水质较差时，可以调大第三阀体510，并调小或关闭节流阀710，使循环管路70中的废水流量减小，以防止杂质过多的废水返回至净水管路30中，对泵体组件60和滤芯组件10造成损坏，影响过滤水系统100的正常运行。
根据本发明的一些实施例，滤芯组件10可以包括：前置滤芯、精细过滤滤芯和后置滤芯。其中，前置滤芯位于进水口110和净水出口120之间，前置滤芯可以过滤掉原水中的大颗粒杂质，得到净水。净水可以作为清洗衣物、浇花等生活用水。精细过滤滤芯位于净水回水口130处，精细过滤滤芯可以对净水进一步过滤，过滤掉水中的细微杂质，如将过多的无机盐、有机物、重金属离子、细菌、病毒、农药、三氯甲烷废物等其它有害物质统统截留下来，并通过连续排放的废水将这些水中有害异物及盐分排出，进而使水质进一步提高。在纯水出口140处还设置有后置滤芯，排污口150位于精细过滤滤芯和后置滤芯之间。经过精细过滤滤芯的水流经后置滤芯进一步过滤。例如，后置滤芯可以使用活性炭，一方面，活性炭可以利用内部大量的纤维空隙，吸附水中的色素和异味等；另一方面还可以在活性炭中添加果味，由此，通过后置滤芯流出后的纯水清洁安全，而且口感得到了改善。
进一步地，精细过滤滤芯可以为反渗透滤芯或纳滤膜滤芯。也就是说，精细过滤滤芯可以选择使用反渗透滤芯，也可以选择使用纳滤膜滤芯。需要说明的是，反渗透滤芯具有极小的孔径，孔径可以达到头发丝的一百万分之一(0.0001微米)，只有水分子及部分矿物离子能够通过，因此可以有效地过滤掉水中的杂质、细菌和病毒等。然而，水流在不受外力的作用下具有从低浓度向高浓度流动的特性。因此，需要对水流施加足 够的压力，保证水流穿过反渗透滤芯起到精细过滤的效果。而纳滤膜滤芯纳滤的孔径范围在几个纳米左右，纳滤是一种介于反渗透和超滤之间的压力驱动膜分离过程，采用纳滤膜滤芯可以降低过滤水系统100中精细过滤过程中对水压的要求，从而可以节省能耗。
可以理解的是，净水外接口310与净水回水口130之间可以不设置泵体组件60，排污管路50上的第三阀体510可以设置为废水手动阀，且净水外接口开关311为净水手动阀，纯水外接口开关411可选为纯水手动阀，第一阀体320为手动第一阀体，第二阀体420为手动第二阀体。从而过滤水系统100在使用过程中，可以不需要泵等用电的设备，只需调整净水手动阀、纯水手动阀、手动第一阀体、手动第二阀体和废水手动阀的开闭即可，进而达到省电、降低成本的目的。
例如，当需要获得净水时，可以打开净水手动阀，且使纯水手动阀保持在关闭状态，原水经滤芯组件10过滤后从净水出口120流出，并通过净水管路30由净水外接口310流出以供用户使用，此时基本没有废水产生，废水手动阀可以保持在关闭状态；当需要获得纯水时，可以打开纯水手动阀、废水手动阀、手动第一阀体和手动第二阀体且使净水手动阀保持关闭状态，原水可以依靠自身的压力渗透到精细过滤滤芯内进行过滤，并从纯水出口140流出滤芯组件10，最终通过纯水管路40由纯水外接口410流出以供用户使用，废水通过排污管路50流出。
下面参照图1和图2以两个具体的实施例详细描述根据本发明实施例的过滤水系统100。值得理解的是，下述描述仅是示例性说明，而不是对本发明的具体限制。
实施例一：
如图1和图2所示，过滤水系统100包括：滤芯组件10、进水管20、净水管路30、纯水管路40、排污管路50和循环管路70。
其中，如图1和图2所示，滤芯组件10具有进水口110、净水出口120、净水回水口130、纯水出口140和排污口150。滤芯组件10为一体化复合滤芯，且滤芯组件10包括：前置滤芯、精细过滤滤芯和后置滤芯。前置滤芯位于进水口110和净水出口120之间，精细过滤滤芯为反渗透膜滤芯且位于净水回水口130处，后置滤芯位于纯水出口140处。
进水管20与进水口110连通，净水管路30的一端连接在净水出口120，净水管路30的另一端连接在净水回水口130。净水管路30上设置有净水外接口310和用于控制净水管路30通断的第一阀体320以及用于驱动纯水管路40内水流动的泵体组件60，泵体组件60设在第一阀体320与净水回水口130之间。其中，第一阀体320为电磁阀， 泵体组件60为增压泵，在净水外接口310处还设置有净水外接口开关311。
在纯水出口140处连接有纯水管路40，纯水管路40上设置有纯水外接口410和用于控制纯水管路40通断的第二阀体420，其中，第二阀体420为单向阀在纯水外接口410处还设置有纯水外接口开关411。排污管路50的一端与排污口150连通，另一端与外界连通，排污管路50上设有用于控制其通断的第三阀体510，第三阀体510为电磁阀。循环管路70的一端与排污管路50连通，循环管路70的另一端位于第一阀体320和泵体组件60之间。循环管路70上设置有节流阀710。
其中，如图1所示，当过滤水系统100制净水时，打开净水外接口开关311，净水管路30部分连通，第一阀体320和泵体组件60处于关闭状态，纯水管路40和排污管路50断开(如图1中所示纯水管路40和排污管路50为虚线)，水流在过滤水系统100内沿图1所示箭头：a1→a2→a3→a4所示的方向流动。如图1所示，原水从进水管20经过进水口110进入到滤芯组件10内，经过前置滤芯进行初步过滤得到净水，净水经过净水出口120流出滤芯组件10，并经过净水外接口310流出，由此，得到净水可以作为清洗衣物、浇花等生活用水。
当过滤水系统100制纯水时，如图2所示，关闭净水外接口开关311，并打开纯水外接口开关411。当打开纯水外接口开关411时，第二阀体420检测到下游的水压降低，并将水压降低的信号传递给系统，系统控制第一阀体320和泵体组件60打开，净水管路30、纯水管路40以及排污管路50连通。净水外接口310处断开(如图2中净水外接口310处虚线所示)。水流在过滤水系统100中沿箭头：b1→b2→b3→b4→b5所示的方向流动。
如图2所示，制备纯水时，原水从进水管20经过进水口110进入到滤芯组件10，经过前置滤芯进行初步过滤得到净水。净水从净水出口120排出并沿净水管路30经过第一阀体320和泵体组件60从净水回水口130返回至滤芯组件10。其中，泵体组件60可以对净水水流进行加压，增压后的净水水流从净水回水口130返回至滤芯组件10内并经过精细过滤滤芯进一步过滤，并经后置滤芯再次过滤以进一步改善水质并提高水质口感，最后得到的纯水从纯水出口140流出，并经过纯水管路40流出，由此，得到纯水可以作为饮用水或用以做饭等。
需要说明的是，在制备纯水的过程中会产生废水，废水可以从排污口150排出后，经过排污管路50直接排出过滤水系统100(如图2中箭头：c50→d60所示的流动方向)；部分废水也可以经过循环管路70返回至净水管路30中(如图2中箭头：c50→e60→e70所示的流动方向)，并流入至滤芯组件10内再次进行过滤。由此，使废水得到了循环 利用，节约了水资源。
由此，通过设置滤芯组件10，可以使过滤水系统100结构紧凑，优化管路的布局。而且，在该过滤水系统100中分别设置有净水管路30和纯水管路40，由此，可以根据生活中不同的用水需求选择不同的水质出口，操作方便，而且可以减轻浪费，节能减耗。而且，通过在过滤水系统100上设置循环管路70，可以使废水得到循环利用，从而节约了水资源。
实施例二：
与实施例一不同的是，在该实施例中，净水外接口310与净水回水口130之间取消泵体组件60，且排污管路50上的第三阀体510设置为废水手动阀，净水外接口开关311为净水手动阀，纯水外接口开关411可选为纯水手动阀，第一阀体320为手动第一阀体，第二阀体420为手动第二阀体。
当需要获得净水时，可以打开净水手动阀，且使纯水手动阀保持在关闭状态，原水经滤芯组件10过滤后从净水出口120流出，并通过净水管路30由净水外接口310流出以供用户使用，此时基本没有废水产生，废水手动阀可以保持在关闭状态；当需要获得纯水时，可以打开纯水手动阀、废水手动阀、手动第一阀体和手动第二阀体且使净水手动阀保持关闭状态，原水可以依靠自身的压力渗透到精细过滤滤芯内进行过滤，并从纯水出口140流出滤芯组件10，最终通过纯水管路40由纯水外接口410流出以供用户使用，废水通过排污管路50流出。
由此，过滤水系统100在使用过程中，可以不需要泵等用电的设备，只需调整净水手动阀、纯水手动阀、手动第一阀体、手动第二阀体和废水手动阀的开闭即可，进而达到省电、降低成本的目的。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种过滤水系统，其特征在于，包括：
    滤芯组件，所述滤芯组件具有进水口、净水出口、净水回水口、纯水出口和排污口；
    进水管，所述进水管与所述进水口连通；
    用于连通所述净水出口和所述净水回水口的净水管路，所述净水管路具有净水外接口和用于控制所述净水管路通断的第一阀体；
    纯水管路，所述纯水管路与所述纯水出口连通，且所述纯水管路具有纯水外接口和用于控制所述纯水管路通断的第二阀体；
    排污管路，所述排污管路的一端与所述排污口连通，另一端与外界连通；和
    循环管路，所述循环管路的一端与所述净水管路连通，另一端与所述排污管路连通，
    其中，当所述过滤水系统制净水时，所述净水管路连通，所述纯水管路断开；当所述过滤水系统制纯水时，所述净水管路、所述纯水管路以及所述排污管路连通。
  2. 根据权利要求1所述的过滤水系统，其特征在于，还包括：
    用于驱动所述纯水管路内水流动的泵体组件，所述泵体组件设在所述净水管路上且位于所述净水外接口与所述净水回水口之间。
  3. 根据权利要求2所述的过滤水系统，其特征在于，所述泵体组件为增压泵。
  4. 根据权利要求2或3所述的过滤水系统，其特征在于，所述第一阀体位于所述泵体组件的上游。
  5. 根据权利要求4所述的过滤水系统，其特征在于，所述循环管路的一端连接在所述第一阀体和所述泵体组件之间。
  6. 根据权利要求1-5中任一项所述的过滤水系统，其特征在于，所述第一阀体为电磁阀，所述第二阀体为单向阀。
  7. 根据权利要求1-6中任一项所述的过滤水系统，其特征在于，所述排污管路上设有用于控制其通断的第三阀体。
  8. 根据权利要求7所述的过滤水系统，其特征在于，所述第三阀体为电磁阀。
  9. 根据权利要求1-8中任一项所述的过滤水系统，其特征在于，所述循环管路上设有节流阀。
  10. 根据权利要求1-9中任一项所述的过滤水系统，其特征在于，所述滤芯组件包括：
    前置滤芯，所述前置滤芯位于所述进水口和所述净水出口之间；
    精细过滤滤芯，所述精细过滤滤芯位于所述净水回水口处；和
    后置滤芯，所述后置滤芯位于所述纯水出口处，所述排污口位于所述精细过滤滤芯和所述后置滤芯之间。
  11. 根据权利要求10所述的过滤水系统，其特征在于，所述精细过滤滤芯为反渗透滤芯或纳滤膜滤芯。
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