CN108558053A - A kind of water-saving water purifier - Google Patents

A kind of water-saving water purifier Download PDF

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Publication number
CN108558053A
CN108558053A CN201810711181.7A CN201810711181A CN108558053A CN 108558053 A CN108558053 A CN 108558053A CN 201810711181 A CN201810711181 A CN 201810711181A CN 108558053 A CN108558053 A CN 108558053A
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CN
China
Prior art keywords
water
waste water
reverse
processed
proportioner
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201810711181.7A
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Chinese (zh)
Inventor
韩金亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jin Jin Liang Machinery Co.,Ltd.
Original Assignee
Weifang Jinliang Intelligent Household Electrical Appliance Co Ltd
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
Application filed by Weifang Jinliang Intelligent Household Electrical Appliance Co Ltd filed Critical Weifang Jinliang Intelligent Household Electrical Appliance Co Ltd
Priority to CN201810711181.7A priority Critical patent/CN108558053A/en
Publication of CN108558053A publication Critical patent/CN108558053A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02Membrane cleaning or sterilisation ; Membrane regeneration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The present invention provides a kind of water-saving water purifiers, including the first filter device, the water outlet of first filter device is equipped with water pump, the water outlet of the water pump is equipped with RO reverse-osmosis filtering devices, the RO reverse-osmosis filtering devices are equipped with pure water outlet pipe and waste water outlet pipe, the waste water outlet pipe is equipped with waste water proportioner, and the waste water proportioner is parallel with scouring electromagnetic valve, and the discharge ratio of pure water and waste water is greater than or equal to 1 in the waste water proportioner:1, water pressure sensor processed is equipped between the water pump and the RO reverse-osmosis filtering devices;The setting of the ratio of the waste water proportioner can largely save water resource, the setting of the ratio of the waste water proportioner is but easy to block the small filter opening of its in the RO reverse-osmosis filtering devices, and the setting of the water pressure sensor processed and the scouring electromagnetic valve regular can rinse the RO reverse-osmosis filtering devices repeatedly, it is therefore prevented that the RO reverse-osmosis filtering devices are blocked.

Description

A kind of water-saving water purifier
Technical field
The present invention relates to a kind of purifier fields, specifically, being to be related to a kind of water-saving water purifier.
Background technology
Water purifier, or also known as water purifier can be used for filtering out floating material, heavy metal, germ etc. in water, for that filter Except the water purifier of bacterial virus, water outlet can directly be drunk.
At present on water purifier using a plurality of types of filter devices to water quality carry out purified treatment, remove traditional PP cottons, The filtering materials such as activated carbon, newer filtering material include ultrafiltration membrane and RO reverse osmosis membranes, and both of which can will be in water quality Bacterium and virus filtration remove, water outlet can directly be drunk, and RO reverse osmosis membranes can more further filter out in water Heavy metal ion, it is various have several macromolecular substances etc., water belongs to pure water after RO film purified treatments, and water quality is more preferable, and mouthfeel is more preferably. But require uninterruptedly to rinse film when RO reverse osmosis membrane filtrations, that is, necessarily will produce during water processed a large amount of Waste water, it is however generally that the ratio of RO water-purifying machine with reverse osmosis membrane output pure water and waste water is 1:2 or 1:3, as soon as a glass pure water is drunk, The waste water of two glasss or three glasss must be discharged, water resource waste is serious.And if the ratio that pure water and waste water is discharged improved, it rinses Wastewater flow rate it is insufficient, then can be easy to block RO films, and then scrap, and the cost of RO films is far above other filtering materials, from And cause to safeguard and reduce waste water, reduce huge opposition between waste, the cost for considerably increasing maintenance and using.
Invention content
It is an object of the invention to overcome the shortcoming of above-mentioned traditional technology, provide a kind of waste water yield it is few while The longer water-saving water purifier of RO membrane lifetimes can be maintained again.
The purpose of the present invention is what is reached by following technical measures:A kind of water-saving water purifier, including with carry out water lines The water outlet of first filter device of connection, first filter device is equipped with water pump, and the water outlet of the water pump is anti-equipped with RO Osmosis filtration device, the RO reverse-osmosis filtering devices are equipped with pure water outlet pipe and waste water outlet pipe, in the waste water outlet pipe Equipped with waste water proportioner, the waste water proportioner is parallel with scouring electromagnetic valve, and the pure water outlet pipe is equipped with non-return valve, special Sign is:The discharge ratio of pure water and waste water is greater than or equal to 1 in the waste water proportioner:1, the water pump and the RO reverse osmosis It is equipped with water pressure sensor processed between saturating filter device, the water pressure sensor processed is electrically connected with control circuit, the control Circuit is electrically connected with scouring electromagnetic valve, and the pressure value that the control circuit is measured in water pressure sensor processed is set beyond flushing pressure Start scouring electromagnetic valve after definite value to rinse.
Preferably, the discharge ratio of pure water and waste water is set as 2 ~ 4 in the waste water proportioner:1.
It is highly preferred that the discharge ratio of pure water and waste water is set as 4 in the waste water proportioner:1.
Preferably, the control circuit includes display/warning circuit, and water pressure processed senses the control circuit after rinsing RO film information warnings are sent out by display/warning circuit when the pressure value that device measures exceeds flushing pressure setting value.
Preferably, the control circuit includes TDS observation circuits, and the TDS observation circuits are electrically connected with TDS detections and visit Head, the TDS detection probes are placed on the pure water outlet pipe of RO reverse-osmosis filtering devices, and the TDS observation circuits detect TDS The pure water TDS values that detection probe is surveyed exceed after predetermined value sends out RO film information warnings by display/warning circuit.
Preferably, the control circuit includes time circuit, and the time circuit calculates recent washing time and system in the recent period The ratio of water time, time circuit when recent washing time and the ratio of recent water time processed exceed predetermined value by display/ Warning circuit sends out RO film information warnings.
Preferably, first filter device includes the level-one PP cotton filters with water piping connection, with the level-one The secondary granule active carbon filter of PP cotton filters connection, the three stage compression activated carbon being connect with the secondary granule activated carbon Filter.
Preferably, first filter device includes level Four ultrafiltration membrane filter, the level Four ultrafiltration membrane filter into Water end (W.E.) is connect with the three stage compression active carbon filter, and the water outlet of the level Four ultrafiltration membrane filter is connect with water pump.
Preferably, the pure water outlet pipe is equipped with Postposition carbon filter.
Compared with prior art, it is an advantage of the invention that:The setting of the ratio of the waste water proportioner can be saved largely The filtering accuracy of about water resource, the RO reverse-osmosis filtering devices reaches a ten thousandth micron, the ratio of the waste water proportioner Setting be but easy to block the small filter opening of its in the RO reverse-osmosis filtering devices, and the water pressure sensor processed and institute Stating the setting of scouring electromagnetic valve regular can rinse the RO reverse-osmosis filtering devices repeatedly, it is therefore prevented that the RO is reverse osmosis Filter device is blocked, to extend the service life of the RO reverse-osmosis filtering devices;It has saved and has also improved it with water The cost of maintenance.
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Description of the drawings
Attached drawing 1 is a kind of water-saving water purifier structural schematic diagram of the present invention.
Attached drawing 2 is a kind of water-saving water purifier another kind structural schematic diagram of the present invention.
Specific implementation mode
Embodiment one:As shown in Fig. 1, a kind of water-saving water purifier includes and the first filter device for carrying out water lines 1 and connecting 2, first filter device 2 includes and comes 1 level-one PP cottons filter 21 connected in sequence of water lines, secondary granule activated carbon mistake Filter 22 and three stage compression active carbon filter 23, the three stage compression active carbon filter 23 of first filter device 2 go out Water end (W.E.) is connected with water pump 3, and the water outlet of the water pump 3 is equipped with RO reverse-osmosis filtering devices 4, the RO reverse-osmosis filtering devices 4 Equipped with pure water outlet pipe 5 and waste water outlet pipe 6, the pure water outlet pipe 5 is equipped with Postposition carbon filter 7, the waste water Outlet pipe 6 is equipped with waste water proportioner 8, and the waste water proportioner 8 is parallel with scouring electromagnetic valve 9, is set on the pure water outlet pipe 5 There is a non-return valve 10, the discharge ratio of pure water and waste water is greater than or equal to 1 in the waste water proportioner 8:1, the waste water proportioner 8 The discharge ratio of middle pure water and waste water is preferably arranged to 2 ~ 4:1, pure water and waste water in the waste water proportioner 8 in the present embodiment Discharge ratio be set as 4:1.
It is equipped with low-pressure sensor 11 between the water pump 3 and the first filter device 2, the non-return valve 10 and goes out the fire hose It is equipped with high-pressure pressure sensor 12 between head, the low-pressure sensor 11 and high-pressure pressure sensor 12 are and control circuit Electrical connection.
Water pressure sensor 13 processed, the water pressure processed are equipped between the water pump 3 and the RO reverse-osmosis filtering devices 4 Sensor 13 is electrically connected with control circuit, and the control circuit is electrically connected with scouring electromagnetic valve 9, and the control circuit is in hydraulic pressure processed The pressure value that force snesor 13 measures is rinsed beyond startup scouring electromagnetic valve 9 after flushing pressure setting value.
The control circuit includes display/warning circuit, and the control circuit after rinsing survey by water pressure sensor 13 processed RO film information warnings are sent out by display/warning circuit when fixed pressure value exceeds flushing pressure setting value.Display/warning circuit Display screen can be used, and either the modes such as light or sound send out information.
The control circuit includes TDS observation circuits, and the TDS observation circuits are electrically connected with TDS detection probes, described TDS detection probes are placed on the pure water outlet pipe 5 of RO reverse-osmosis filtering devices 4, the TDS observation circuits detection TDS detections The pure water TDS values that probe is surveyed exceed after predetermined value sends out RO film information warnings by display/warning circuit;The TDS detections are visited It is attached to be not shown in figure.
The control circuit includes time circuit, the time circuit calculate recent washing time and recent water time processed it Ratio, time circuit pass through display/warning circuit when recent washing time and the ratio of recent water time processed exceed predetermined value Send out RO film information warnings.
The process for preparing water flow of the equipment is as follows:
Booting operation, control circuit detect low-pressure sensor 11, and 11 signal of low-pressure sensor, which is shown, carrys out water pressure mistake Low, control system sends out water shortage alarm signal by display/warning circuit, and 11 signal of low-pressure sensor, which is shown, carrys out water pressure Normally, into normal Water flow-path processed;
Control system detects high-pressure pressure sensor 12, and 12 pressure of high-pressure pressure sensor is normal, and water pump 3 is not run, high pressure pressure Less than normally, control system starts water pump 3 and starts water processed 12 pressure of force snesor;
Control system detects water pressure sensor 13 processed during water processed, and 13 pressure of water pressure sensor processed is set less than flushing pressure Definite value and time circuit calculate the continuous water time processed and are less than continuous water predetermined value processed, persistently water processed;
Until
13 pressure of water pressure sensor processed is higher than flushing pressure setting value, and control system starts scouring electromagnetic valve 9 and starts one in advance Surely the flushing for rinsing duration continues normal Water flow-path processed after flushing;
Time circuit calculates the continuous water time processed more than continuous water predetermined value processed, and control system starts scouring electromagnetic valve 9 and starts one A predetermined flushing for rinsing duration, continues normal Water flow-path processed after flushing.
Certainly, in the present invention, control circuit is timed flushing by time circuit or the accumulative water time processed rinses, or Booting flushing of person's more low side etc., these are the conventional arrangements on current water purification machine, and physical circuit is known, there is a large amount of cities Product is sold, is not repeated.
The continuous water predetermined value processed of flushing pressure setting value and continuously water time processed are according to the logistics performance setting of RO films, punching It washes pressure set points and is set in the certain amplitude higher than the normal hydraulic pressure force value processed of RO films, be with the pressure that RO films will not be caused to damage High limit high limit and RO films can be selected normally between hydraulic pressure force value processed herein, and continuously the continuous water predetermined value processed of water time processed is determined The frequency of normal flushing is determined, the application uses high purity water proportional manner, and continuously water predetermined value processed is traditional water dispenser value A quarter is more advantageous to half and extends RO membrane lifetimes.Compared with the water mode processed of the high waste water ratio of tradition, the present invention RO membrane lifetimes slightly shorten, and are the 80-90% in traditional approach service life, depending on water source quality.Slightly have the feelings shortened in RO membrane lifetimes Under condition, pole of the present invention significantly increases pure water amount, wastewater flow rate is reduced an order of magnitude, water has significantly been saved in pole Resource.
Embodiment two:As shown in Fig. 2, in the present embodiment, first filter device 2 includes level Four ultrafiltration membrane filter 24, the water inlet end of the level Four ultrafiltration membrane filter 24 is connect with 23 filter of three stage compression activated carbon, and the level Four is super The water outlet of membrane filter 24 is connect with water pump 3.Rest part is same as Example 1 in the present embodiment.
Ultrafiltration membrane can cross particulate matter, bacterium and virus in drainage etc., and the impurity into RO films can be greatly reduced Quantity can be extended for 90% or more of traditional approach service life to the significantly more efficient service life for extending RO films, replace RO The number of film is close with traditional approach.And ultrafiltration membrane manufacturing cost and use cost itself is relatively low, reduce replace RO film saving at Originally the equipment cost after increasing ultrafiltration membrane can be offset, in the case of keeping equipment entirety use cost not increased, is realized lower Maintenance times are replaced, there is better usage experience.

Claims (9)

1. a kind of water-saving water purifier includes the first filter device with water piping connection, the water outlet of first filter device End is equipped with water pump, and the water outlet of the water pump is equipped with RO reverse-osmosis filtering devices, and the RO reverse-osmosis filtering devices are equipped with pure water Outlet pipe and waste water outlet pipe, the waste water outlet pipe are equipped with waste water proportioner, and the waste water proportioner is parallel with flushing electricity Magnet valve, the pure water outlet pipe are equipped with non-return valve, it is characterised in that:The delivery ratio of pure water and waste water in the waste water proportioner Example is greater than or equal to 1:1, water pressure sensor processed, the water processed are equipped between the water pump and the RO reverse-osmosis filtering devices Pressure sensor is electrically connected with control circuit, and the control circuit is electrically connected with scouring electromagnetic valve, and the control circuit is in water processed The pressure value of determination of pressure sensor starts scouring electromagnetic valve flushing after exceeding flushing pressure setting value.
2. a kind of water-saving water purifier according to claim 1, it is characterised in that:Pure water and waste water in the waste water proportioner Discharge ratio be set as 2 ~ 4:1.
3. a kind of water-saving water purifier according to claim 2, it is characterised in that:Pure water and waste water in the waste water proportioner Discharge ratio be set as 4:1.
4. a kind of water-saving water purifier according to claim 1, it is characterised in that:The control circuit includes display/alarm Circuit, by aobvious when the control circuit pressure value that water pressure sensor processed measures after rinsing exceeds flushing pressure setting value Show/warning circuit sends out RO film information warnings.
5. a kind of water-saving water purifier according to claim 4, it is characterised in that:The control circuit includes TDS monitoring electricity Road, the TDS observation circuits are electrically connected with TDS detection probes, and the TDS detection probes are placed in RO reverse-osmosis filtering devices On pure water outlet pipe, pure water TDS values that TDS observation circuits detection TDS detection probes are surveyed beyond after predetermined value by display/ Warning circuit sends out RO film information warnings.
6. a kind of water-saving water purifier according to claim 4, it is characterised in that:The control circuit includes time circuit, The time circuit calculates the ratio of recent washing time and recent water time processed, and time circuit is in recent washing time and in the recent period RO film information warnings are sent out by display/warning circuit when the ratio of water time processed exceeds predetermined value.
7. according to a kind of one of them described water-saving water purifier of claim 1 to 6, it is characterised in that:The first filtering dress It sets including the level-one PP cotton filters with water piping connection, the secondary granule activated carbon being connect with the level-one PP cotton filters Filter, the three stage compression active carbon filter being connect with the secondary granule activated carbon.
8. a kind of water-saving water purifier according to claim 7, it is characterised in that:First filter device includes that level Four is super Membrane filter, the water inlet end of the level Four ultrafiltration membrane filter are connect with the three stage compression active carbon filter, and described four The water outlet of grade ultrafiltration membrane filter is connect with water pump.
9. according to a kind of one of them described water-saving water purifier of claim 1 to 6, it is characterised in that:The pure water outlet pipe It is equipped with Postposition carbon filter.
CN201810711181.7A 2018-07-03 2018-07-03 A kind of water-saving water purifier Pending CN108558053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810711181.7A CN108558053A (en) 2018-07-03 2018-07-03 A kind of water-saving water purifier

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Application Number Priority Date Filing Date Title
CN201810711181.7A CN108558053A (en) 2018-07-03 2018-07-03 A kind of water-saving water purifier

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CN108558053A true CN108558053A (en) 2018-09-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111925032A (en) * 2020-08-06 2020-11-13 广东蓝鸥净水设备制造有限公司 Water tank-free mutual-flushing water purification equipment and ultrafiltration membrane mutual-flushing control method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205115161U (en) * 2015-10-25 2016-03-30 合肥荣事达水工业设备有限责任公司 Energy saving and emission reduction type reverse osmosis water purification machine
CN105621754A (en) * 2014-10-31 2016-06-01 道易(青岛)净水设备制造有限公司 Backwash osmotic water purification machine with monitoring function
CN105906081A (en) * 2016-05-09 2016-08-31 佛山市云米电器科技有限公司 Reverse osmosis water purifying machine and flushing method of reverse osmosis filter core of reverse osmosis water purifying machine
CN205613286U (en) * 2016-05-10 2016-10-05 张世海 Control wastewater discharge's water preparation system is detected through waste water TDS
CN205676297U (en) * 2016-06-21 2016-11-09 沂水净润康净水设备厂 A kind of numerical control and energy saving water purifier
CN206204030U (en) * 2016-11-09 2017-05-31 深圳市丰达源环保设备有限公司 A kind of pulse water saving anti-penetration water purifier
CN206407990U (en) * 2016-11-18 2017-08-15 范广忠 Micro- useless water purification machine
CN107673499A (en) * 2017-10-27 2018-02-09 杭州德意电器股份有限公司 A kind of intelligent decision changes the RO water purification machines of filter core
CN208545214U (en) * 2018-07-03 2019-02-26 潍坊金亮智能家电有限公司 A kind of water-saving water purifier

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105621754A (en) * 2014-10-31 2016-06-01 道易(青岛)净水设备制造有限公司 Backwash osmotic water purification machine with monitoring function
CN205115161U (en) * 2015-10-25 2016-03-30 合肥荣事达水工业设备有限责任公司 Energy saving and emission reduction type reverse osmosis water purification machine
CN105906081A (en) * 2016-05-09 2016-08-31 佛山市云米电器科技有限公司 Reverse osmosis water purifying machine and flushing method of reverse osmosis filter core of reverse osmosis water purifying machine
CN205613286U (en) * 2016-05-10 2016-10-05 张世海 Control wastewater discharge's water preparation system is detected through waste water TDS
CN205676297U (en) * 2016-06-21 2016-11-09 沂水净润康净水设备厂 A kind of numerical control and energy saving water purifier
CN206204030U (en) * 2016-11-09 2017-05-31 深圳市丰达源环保设备有限公司 A kind of pulse water saving anti-penetration water purifier
CN206407990U (en) * 2016-11-18 2017-08-15 范广忠 Micro- useless water purification machine
CN107673499A (en) * 2017-10-27 2018-02-09 杭州德意电器股份有限公司 A kind of intelligent decision changes the RO water purification machines of filter core
CN208545214U (en) * 2018-07-03 2019-02-26 潍坊金亮智能家电有限公司 A kind of water-saving water purifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111925032A (en) * 2020-08-06 2020-11-13 广东蓝鸥净水设备制造有限公司 Water tank-free mutual-flushing water purification equipment and ultrafiltration membrane mutual-flushing control method

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Effective date of registration: 20220705

Address after: 262400 No. 3, East Xinchang Road, Changle County Economic Development Zone, Weifang City, Shandong Province (300 meters north of the expressway intersection, east of the road)

Applicant after: Jin Jin Liang Machinery Co.,Ltd.

Address before: 262400 Building 1, building 3, east 3, Xinchang Road, Changle Economic Development Zone, Weifang City, Shandong Province

Applicant before: WEIFANG JINLIANG INTELLIGENT HOUSEHOLD ELECTRICAL APPLIANCE Co.,Ltd.

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180921