CN101254967B - Water purifier and working method thereof - Google Patents

Water purifier and working method thereof Download PDF

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Publication number
CN101254967B
CN101254967B CN2007101248080A CN200710124808A CN101254967B CN 101254967 B CN101254967 B CN 101254967B CN 2007101248080 A CN2007101248080 A CN 2007101248080A CN 200710124808 A CN200710124808 A CN 200710124808A CN 101254967 B CN101254967 B CN 101254967B
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water
treatment
pretreating
filter
purification machine
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CN101254967A (en
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蒋鼎山
赵凯
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YINGNIKE ELECTRIC APPLIANCE CO Ltd SHENZHEN CITY
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YINGNIKE ELECTRIC APPLIANCE CO Ltd SHENZHEN CITY
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Abstract

The invention relates to a water treatment device, in particular to a full automatic flushing and double-film purifying water saving and long acting water purifier and the working method of the water purifier. The water purifier comprises a water inlet opening, a water outlet opening, a filtering device arranged between the water inlet opening and the water outlet opening, a pre-treatment device, a post-treatment device, an automatic flushing device, a dense water discharging opening and a booster pump, wherein the pre-treatment device adopts an ultra filtration membrane filter, the post-treatment device adopts a reverse osmosis filter, and the filtering device is provided with a N-KDF filter element; the automatic flushing device comprises two electromagnetic valves which are respectively arranged between the dense water discharging opening and the pre-treatment device and between the dense water discharging opening and the post treatment device. The water purifier adopts the working method that the electromagnetic valve connected with the pre-treatment device works periodically, each working is opening and closing which are alternately performed, and at least two times of the opening and closing are performed for each time; the electromagnetic valve connected with the pre-treatment device works all the time, and the working mode adopts opening and closing which are alternately performed.

Description

Water purification machine and water purification machine method of work
Technical field
The present invention relates to water treatment device, relate in particular to a kind of full-automatic flushing, the water saving long-acting type water purification machine of two film purification and the method for work of this water purification machine.
Background technology
Serious day by day in view of the pollution of physical environment ecology, people are direct drinking public water supply, must be by just drinking after the purifying treatment.Chinese patent literature CN1686834A discloses a kind of water saving, sealing type pure water appliances, it uses valve by setting up condensed water pressure water storage barrel device and storing, supply condensed water or the condensed water that is connected through the condensed water pressure switch directly is set according to the demand of bath water, reaches condensed water 100% and is recovered utilization.Yet this patented technology is the same with prior art, has the following disadvantages: the reverse osmosis preprocessing filter element life-span is shorter, often need change; The pre-treatment precision is limited, can't effectively protect reverse osmosis membrane, and film is easily dirty stifled; What therefore filter core can not design is too meticulous, and then causes the precision of prior art water purifying treatment not high.The method of work of existing water purification machine is that water advances from a side of filter core, goes out from opposite side, and dirty spy accumulates in filter core; This method of work not only water quality of pure water is difficult to guarantee, and the life-span of filter core is very low.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art, and the water saving long-acting type water purification machine that provides a kind of full-automatic flushing, two film to purify.Another object of the present invention is to provide a kind of pure water water quality that makes to reach the long water purification machine method of work of filter element life well.
Purpose of the present invention can be achieved through the following technical solutions:
Water purification machine, comprise water-in, water outlet, be arranged at the filtration unit between water-in and the water outlet, it is characterized in that, also comprise pretreating device, after-treatment device, automatic flushing device and concentrated water discharge mouth, pretreating device is arranged between water-in and the filtration unit, after-treatment device is arranged between filtration unit and the water outlet, and automatic flushing device is arranged between concentrated water discharge mouth and pretreating device and the after-treatment device; Also comprise topping-up pump, topping-up pump is arranged between filtration unit and the after-treatment device; Pretreating device is the ultrafiltration membrance filter device, and after-treatment device is a reverse osmosis filter, and filtration unit has the N-KDF filter core; Automatic flushing device comprises and is arranged between concentrated water discharge mouth and the pretreating device concentrated water spout respectively and two magnetic valves between concentrated water discharge mouth and the after-treatment device concentrated water spout.
Water purification machine is characterized in that, is provided with entering water electromagnetic valve between pretreating device and the filtration unit.
Water purification machine is characterized in that, is provided with post-filter between after-treatment device and the water outlet, and post-filter has activated carbon cartridge.
Water purification machine is characterized in that, after-treatment device water outlet port also connects a pure water water tank by high-voltage switch gear.
Water purification machine is characterized in that, also comprises the check valve that is connected between topping-up pump entry port and the after-treatment device concentrated water spout, and the direction that is provided with of check valve is that water can only flow to the topping-up pump port of intaking.
Water purification machine is characterized in that, also is connected a flushing water tank between pretreating device water outlet port and the entering water electromagnetic valve.
Water purification machine is characterized in that, the N-KDF filter core comprises filter-core shell, and the filter-core shell inner chamber is filled the filtrate of being made by diatomite copper, Zinc material, the filtrate spongy layer that a side is provided with of axially intaking, and axial water outlet one side of filtrate is provided with non-woven fabrics.
Water purification machine is characterized in that, pretreating device is the ultrafiltration membrance filter device, and after-treatment device is a reverse osmosis filter, and filtration unit has the N-KDF filter core; Automatic flushing device comprises two magnetic valves that are connected between concentrated water discharge mouth and dense water end (W.E.) mouth of pretreating device and the dense water end (W.E.) mouth of after-treatment device; Be provided with entering water electromagnetic valve between pretreating device and the filtration unit; Be provided with post-filter between after-treatment device and the water outlet, post-filter has activated carbon cartridge; After-treatment device water outlet port also connects a pure water water tank by high-voltage switch gear; Also comprise the check valve that is connected between topping-up pump entry port and the after-treatment device concentrated water spout, the direction that is provided with of check valve is that water can only flow to the topping-up pump port of intaking; Also be connected a flushing water tank between pretreating device water outlet port and the entering water electromagnetic valve; The N-KDF filter core comprises filter-core shell, and the filter-core shell inner chamber is filled the filtrate of being made by diatomite copper, Zinc material, the filtrate spongy layer that a side is provided with of axially intaking, and axial water outlet one side of filtrate is provided with non-woven fabrics.
Purpose of the present invention can also be achieved through the following technical solutions:
The water purification machine method of work, be used for aforementioned any described water purification machine of claim, it is characterized in that, connect the magnetic valve timing working of pretreating device, each work is the opening and closing that hocket, and the opening and closing number of times of each work is at least secondary; The magnetic valve that connects after-treatment device is then worked always, and its mode of operation is the opening and closing that hocket.
The water purification machine method of work is characterized in that, worked once in the every interval of magnetic valve that connects pretreating device in 4 to 12 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 30 to 120 seconds, opens 4 to 20 seconds.
The water purification machine method of work is characterized in that, worked once in the every interval of magnetic valve that connects pretreating device in 8 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 60 seconds, opens 5 seconds.
The water purification machine that the present invention relates to has automatic flushing device, regularly the pretreating device filter core is washed, and in real time the after-treatment device filter core is washed, and dense water is discharged via the concentrated water discharge mouth.Compare with prior art, filter core is difficult for blocking, thereby can adopt meticulousr filter core, so that reach better water treatment effect; On the other hand, because of being provided with automatic flushing device, in time remove dirty blocking up, thereby also prolonged the work-ing life of reverse osmosis filter core.
The water purification machine method of work that the present invention relates to by to the timing of pretreating device flushing with to the real-time flushing of after-treatment device, keeps the cleaning of filter core, and one of contrast prior art side is advanced the method for work that a side goes out, and has improved the life-span of water quality and filter core.
Compared with prior art, the present invention also has following advantage:
By replace conventional P P filter core with ultra-filtration membrane (or microfiltration membrane), ultra-filtration membrane (or microfiltration membrane) can carry out the forward flushing by tap water, also can carry out counterflush to it by external flushing water tank and make it can keep the ultra-filtration membrane flux, increases the service life.Replace the traditional active carbon filter core with the N-KDF filter core, and add the generation that Si-P crystal stops incrustation scale, make it adapt to the different water quality in various places, thereby significantly prolonged the work-ing life of preprocessing filter element, really accomplish the free of replacement filter core.Water inlet enters reverse osmosis membrane filt after process ultra-filtration membrane (or microfiltration membrane) filter process earlier again, thereby can significantly optimize the reverse osmosis membrane influent quality, avoids the dirt of reverse osmosis membrane stifled, significantly prolongs the work-ing life of reverse osmosis membrane.The N-KDF filter core is compared active carbon filter core, and to have a life-span long, not the advantage of breed bacteria.The present invention adopts intermittent type flushing and after-treatment device that dense reusing device for waste water can be set, so also have the advantage of water saving.
Description of drawings
Fig. 1 is the schematic diagram of first embodiment of the invention.
Fig. 2 is the schematic circuit of first embodiment of the invention.
Fig. 3 is the schematic diagram of second embodiment of the invention.
Fig. 4 is the schematic circuit of second embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
First embodiment of the invention is a kind of water purification machine, with reference to figure 1, Fig. 2, water purification machine comprises water-in 101, water outlet 102, is arranged at the filtration unit 106 between water-in 101 and the water outlet 102, also comprise pretreating device 104, after-treatment device 108, automatic flushing device and concentrated water discharge mouth 103, pretreating device 104 is arranged between water-in 101 and the filtration unit 106, after-treatment device 108 is arranged between filtration unit 106 and the water outlet 102, and automatic flushing device is arranged between concentrated water discharge mouth 103 and pretreating device 104 and the after-treatment device 108; Also comprise topping-up pump 107, topping-up pump 107 is arranged between filtration unit 106 and the after-treatment device 108.Pretreating device 104 is ultrafiltration membrance filter devices, and after-treatment device 108 is reverse osmosis filters, and filtration unit 106 has the N-KDF filter core; Automatic flushing device comprises two magnetic valves, promptly is connected in the magnetic valve 114 between concentrated water discharge mouth 103 and the pretreating device 104 dense water end (W.E.) mouths 1043, and is connected in the magnetic valve 113 between concentrated water discharge mouth 103 and the after-treatment device 108 dense water end (W.E.) mouths 1083; Be provided with entering water electromagnetic valve 105 between pretreating device 104 and the filtration unit 106; Be provided with post-filter 111 between after-treatment device 108 and the water outlet 102, post-filter 111 has activated carbon cartridge; After-treatment device 108 water outlet ports also connect a pure water water tank 110 by high-voltage switch gear 109, and pure water water tank 110 has pressurised airbag; Also comprise the check valve 112 that is connected between topping-up pump 107 entry ports 1071 and the after-treatment device 108 dense water end (W.E.) mouths 1083, the direction that is provided with of check valve 112 is that water can only flow to topping-up pump 107 water inlet ports, check valve 112 is the check valves with current-limiting function, advances and also plays pressure stabilization function in this water purification machine.Water purification machine of the present invention connects magnetic valve 114 every intervals of pretreating device 104 worked once in 4 to 12 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve 113 that connects after-treatment device 108 is being worked always, and sequence of operation is every interval 30 to 120 seconds, opens 4 to 20 seconds.
This pair film purifies, and the working process of wash type water purification machine is as follows automatically:
1, normally makes water state
After tap water at first enters the ultrafiltration membrance filter device and filters by water-in, enter topping-up pump after by entering water electromagnetic valve and N-KDF filter element filtering from the water outlet of ultrafiltration membrance filter device water purification mouth.After the supercharging, water enters reverse osmosis membrane filt.The water outlet of reverse osmosis membrane filt pure water enters the pure water water tank and is connected to the dense water water outlet of pure water outlet reverse osmosis membrane filt again and inserts threeway by the road and be divided into two branch roads, and one connects the concentrated water discharge mouth; Another connects current limiting control apparatus by the road--and-waste water is realized the recycling to dense water than the water-in of (check valve 112) water inlet topping-up pump device.
2, ultrafiltration flushing state
What this type adopted is that the ultrafiltration intermittent type washes bleed valve automatically, noiseless in the put in circuit in parallel with other circuit, the ultrafiltration intermittent type washes bleed valve automatically and picks up counting automatically when connecting power supply, will open flushing automatically after reaching the time that computer program writes.
Second embodiment of the present invention also is a kind of water purification machine, with reference to figure 3, Fig. 4, present embodiment and the difference of first embodiment are to be connected a flushing water tank 301 between the water purification mouth of pretreating device and entering water electromagnetic valve, flushing water tank 301 has the pressure air bag, can guarantee the stable of washing pressure and water supply.Be with another difference of first embodiment of the invention, the magnetic valve 314 that connects pretreating device is by main electric control gear 391 controls, and the magnetic valve 313 that connects after-treatment device is controlled by secondary electric control gear 392, and the mode of connection of high-voltage switch gear 309, entering water electromagnetic valve 305 and topping-up pump 307 is identical with first embodiment.
The 3rd embodiment of the present invention is a kind of water purification machine method of work, use the described water purification machine of first embodiment of the present invention, the magnetic valve that connects pretreating device was controlled with the opening and closing time of the magnetic valve that is connected aftertreatment, concrete job order is, worked once in the every interval of magnetic valve that connects pretreating device in 8 hours, each work 20 seconds, sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 60 seconds, opens 5 seconds.Be provided with this water purification machine that is provided with first embodiment of the invention, by probationary certificate, filter core does not smoulder dirt, and be improved the work-ing life of pure water water quality and filter core.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.

Claims (11)

1. water purification machine, comprise water-in, water outlet, be arranged at the filtration unit between water-in and the water outlet, it is characterized in that, also comprise pretreating device, after-treatment device, automatic flushing device and concentrated water discharge mouth, pretreating device is arranged between water-in and the filtration unit, after-treatment device is arranged between filtration unit and the water outlet, and automatic flushing device is arranged between concentrated water discharge mouth and pretreating device and the after-treatment device; Also comprise topping-up pump, topping-up pump is arranged between filtration unit and the after-treatment device; Pretreating device is the ultrafiltration membrance filter device, and after-treatment device is a reverse osmosis filter, and filtration unit has the N-KDF filter core; Automatic flushing device comprises and is arranged between concentrated water discharge mouth and the pretreating device concentrated water spout respectively and two magnetic valves between concentrated water discharge mouth and the after-treatment device concentrated water spout.
2. according to the described water purification machine of claim 1, it is characterized in that, be provided with entering water electromagnetic valve between pretreating device and the filtration unit.
3. according to the described water purification machine of claim 1, it is characterized in that be provided with post-filter between after-treatment device and the water outlet, post-filter has activated carbon cartridge.
4. according to the described water purification machine of claim 1, it is characterized in that after-treatment device water outlet port also connects a pure water water tank by high-voltage switch gear.
5. according to the described water purification machine of claim 1, it is characterized in that, also comprise the check valve that is connected between topping-up pump entry port and the after-treatment device concentrated water spout, the direction that is provided with of check valve is that water can only flow to the topping-up pump port of intaking.
6. according to the described water purification machine of claim 2, it is characterized in that, also be connected a flushing water tank between pretreating device water outlet port and the entering water electromagnetic valve.
7. according to the described water purification machine of claim 1, it is characterized in that the N-KDF filter core comprises filter-core shell, the filter-core shell inner chamber is filled the filtrate of being made by diatomite copper, Zinc material, the filtrate spongy layer that a side is provided with of axially intaking, and axial water outlet one side of filtrate is provided with non-woven fabrics.
8. according to the described water purification machine of claim 1, it is characterized in that pretreating device is the ultrafiltration membrance filter device, after-treatment device is a reverse osmosis filter, and filtration unit has the N-KDF filter core; Automatic flushing device comprises two magnetic valves that are connected between concentrated water discharge mouth and dense water end (W.E.) mouth of pretreating device and the dense water end (W.E.) mouth of after-treatment device; Be provided with entering water electromagnetic valve between pretreating device and the filtration unit; Be provided with post-filter between after-treatment device and the water outlet, post-filter has activated carbon cartridge; After-treatment device water outlet port also connects a pure water water tank by high-voltage switch gear; Also comprise the check valve that is connected between topping-up pump entry port and the after-treatment device concentrated water spout, the direction that is provided with of check valve is that water can only flow to the topping-up pump port of intaking; Also be connected a flushing water tank between pretreating device water outlet port and the entering water electromagnetic valve; The N-KDF filter core comprises filter-core shell, and the filter-core shell inner chamber is filled the filtrate of being made by diatomite copper, Zinc material, the filtrate spongy layer that a side is provided with of axially intaking, and axial water outlet one side of filtrate is provided with non-woven fabrics.
9. water purification machine method of work, be used for aforementioned any described water purification machine of claim, it is characterized in that, connect the magnetic valve timing working of pretreating device, each work is the opening and closing that hocket, and the opening and closing number of times of each work is at least secondary; The magnetic valve that connects after-treatment device is then worked always, and its mode of operation is the opening and closing that hocket.
10. water purification machine method of work according to claim 9 is characterized in that, worked once in the every interval of magnetic valve that connects pretreating device in 4 to 12 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 30 to 120 seconds, opens 4 to 20 seconds.
11. water purification machine method of work according to claim 10 is characterized in that, worked once in the every interval of magnetic valve that connects pretreating device in 8 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 60 seconds, opens 5 seconds.
CN2007101248080A 2007-12-04 2007-12-04 Water purifier and working method thereof Active CN101254967B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101597110B (en) * 2009-07-06 2011-04-13 浙江沁园水处理科技股份有限公司 Anti-pollution reverse-osmosis water purification machine
WO2012155353A1 (en) * 2011-05-19 2012-11-22 艾欧史密斯(上海)水处理产品有限公司 Water-saving type reverse osmosis water purifying machine
CN102786166A (en) * 2012-07-18 2012-11-21 瞿星 Tap water purifying method
CN103721568B (en) * 2014-01-07 2016-05-11 深圳市英尼克电器有限公司 Two circulation reverse osmosis units and reverse osmosis treatent method
WO2017206135A1 (en) * 2016-06-02 2017-12-07 Honeywell International Inc. Water purification system
CN106673137B (en) * 2016-12-27 2019-12-06 北京四季沐歌太阳能技术集团有限公司 Double-membrane long-acting water production system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2566938Y (en) * 2002-09-04 2003-08-20 马秀民 Mousehold hyperfilevation purification water and soften water supply machine
US6863822B2 (en) * 2002-10-16 2005-03-08 Anthony Pipes Method and apparatus for parallel desalting
CN2763255Y (en) * 2004-07-08 2006-03-08 北京爱思泰克科技开发有限责任公司 Electric deionization high purity water prodn. equipment
CN1800040A (en) * 2006-01-16 2006-07-12 王建华 Direct drinking machine for purified water (water-saving civil pipeline type quality-classifying water supplying machine )
CN101036857A (en) * 2006-09-15 2007-09-19 邹国南 Water-saving type RO purifier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2566938Y (en) * 2002-09-04 2003-08-20 马秀民 Mousehold hyperfilevation purification water and soften water supply machine
US6863822B2 (en) * 2002-10-16 2005-03-08 Anthony Pipes Method and apparatus for parallel desalting
CN2763255Y (en) * 2004-07-08 2006-03-08 北京爱思泰克科技开发有限责任公司 Electric deionization high purity water prodn. equipment
CN1800040A (en) * 2006-01-16 2006-07-12 王建华 Direct drinking machine for purified water (water-saving civil pipeline type quality-classifying water supplying machine )
CN101036857A (en) * 2006-09-15 2007-09-19 邹国南 Water-saving type RO purifier

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