CN111099776A - Self-cleaning degerming purifier - Google Patents
Self-cleaning degerming purifier Download PDFInfo
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- CN111099776A CN111099776A CN202010040637.9A CN202010040637A CN111099776A CN 111099776 A CN111099776 A CN 111099776A CN 202010040637 A CN202010040637 A CN 202010040637A CN 111099776 A CN111099776 A CN 111099776A
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- water
- purifier shell
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- cleaning
- water purifier
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- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000012535 impurity Substances 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000000746 purification Methods 0.000 claims description 13
- 239000008213 purified water Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 244000005700 microbiome Species 0.000 abstract description 11
- 241000894006 Bacteria Species 0.000 abstract description 10
- 230000010355 oscillation Effects 0.000 abstract description 10
- 230000002829 reductive effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 229920002521 macromolecule Polymers 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 1
- 235000020188 drinking water Nutrition 0.000 description 6
- 239000003651 drinking water Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000035622 drinking Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- -1 silver ions Chemical class 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Abstract
The invention discloses a self-cleaning degerming water purifying device, and relates to the technical field. This self-cleaning degerming purifier's filter core is copper fibre composite filter core, the filter core is enclosed construction and forms and purifies the chamber, be equipped with on the purifier shell and be used for being the clear ultrasonic cleaning mechanism of filter core, be equipped with compound copper fibre layer on the inner wall with water contact in the purifier shell, purifier shell bottom is equipped with the blow off pipe, be equipped with the suction pump that is used for discharging the filth on the blow off pipe, purifier shell bottom surface all sets up towards blow off pipe lopsidedness, can make full use of ultrasonic oscillation change little the processing to the macromolecule group of aquatic, reach the purpose of demineralized water, high frequency oscillation piles up impurity to the filter core outside and carries out the self-cleaning simultaneously, and can restrain and kill harmful bacterium and microorganism, avoid microorganism impurity to block up the filter core, the filter effect is reduced, the filter core is changed to.
Description
Technical Field
The invention relates to the technical field of water treatment equipment, in particular to a self-cleaning and sterilizing water purification device.
Background
At present, 80% of global diseases are derived from drinking water, the problem of secondary pollution of water delivery is not effectively solved and the drinking water cannot be directly drunk, in a Chinese water supply system, water can reach drinking standards when being output from a tap water company, and 99% of drinking water for users cannot be directly drunk after secondary pollution after delivery.
The water treatment mode comprises physical treatment and chemical treatment. The mode of human being's water treatment has been quite a lot of years history, and the physical method includes utilizing the different filter media of various aperture sizes, utilizes absorption or separation mode, gets rid of the impurity in aquatic outside, and the more important person in the absorption mode is for adsorbing with active carbon, and separation method is to pass through the filter media with water, lets the impurity of bigger volume can't pass through, and then obtains comparatively clean water.
The water purifier is also called water purifier and water quality purifier, and is water treatment equipment for deeply filtering and purifying water according to the use requirement of water. The water purifier is generally used as a small purifier for household use. The technical core is a filtering membrane in a filter element device, and the current main technology is derived from an ultrafiltration membrane and an RO reverse osmosis membrane.
At present, chinese patent publication No. CN209815712U discloses a water purifier with a quick-assembly filter element, which comprises: the filter comprises a machine body, a mounting base and a plurality of groups of filter element components arranged in the mounting base; the filter element component comprises a filter cartridge cover component and a detachable filter cartridge component, and the filter cartridge cover component is fixed on the mounting base; the filter cartridge assembly is provided with a water inlet, a water outlet and a waste water port, and two-way pressure valves are respectively arranged in the water inlet, the water outlet and the waste water port.
The water purifier with the quickly-assembled filter element is provided with the bidirectional pressure valve and the plug-in safety valve, so that the filter cartridge cover component and the filter cartridge component have a water stopping function respectively, and the water stopping effect is good; the whole structure is simple and reliable, the installation and the disassembly are convenient, but when the water purifier is used, the defects that bacteria filtration and beneficial mineral substance retention cannot be achieved simultaneously exist, meanwhile, the filter element needs to be replaced every 2-6 months, a large amount of manpower is wasted for replacement, and a lot of resources are wasted (hundreds of millions of resources need to be replaced every year).
Disclosure of Invention
Aiming at the technical problems, the invention overcomes the defects of the prior art and provides a self-cleaning degerming water purifying device.
In order to solve the technical problems, the invention provides a self-cleaning degerming water purifying device.
The technical effects are as follows: can make full use of ultrasonic oscillation carry out the little processing of changing to the macromolecule group of aquatic, reach the purpose of demineralized water, high frequency oscillation piles up impurity to the filter core outside simultaneously and carries out the self-cleaning, and can restrain and exterminate harmful bacterium and microorganism, avoids microorganism impurity to block up the filter core, reduces the filter effect, and the filter core is changed to a large amount of manpowers of while surface cost, reduces the wasting of resources.
The technical scheme of the invention is further defined as follows: the utility model provides a self-cleaning degerming purifier, including the purifier shell, be equipped with running water import and purified water export on the purifier shell, be equipped with the filter core in the purifier shell, the filter core is copper fiber composite filter core, the filter core is enclosed construction and forms and purifies the chamber, be equipped with on the purifier shell and be used for being the clear ultrasonic cleaning mechanism of filter core, be equipped with composite copper fiber layer on the inner wall with water contact in the purifier shell, purifier shell bottom is equipped with the blow off pipe, be equipped with the suction pump that is used for discharging the filth on the blow off pipe, purifier shell bottom surface all sets up towards blow.
Furthermore, ultrasonic cleaning mechanism includes that a plurality of locates the ultrasonic frequency power on the water purifier shell lateral wall to and connect the ultrasonic transducer between ultrasonic frequency power and water purifier shell.
The self-cleaning degerming water purification device is characterized in that the ultrasonic transducer is fixed on the shell of the water purifier and arranged towards one side of the filter element, and the ultrasonic frequency power supply and the ultrasonic transducer are provided with a plurality of ultrasonic frequency power supplies around the shell of the water purifier.
According to the self-cleaning degerming water purifying device, the tap water inlet is communicated between the inner wall of the shell of the water purifying device and the filter element, and the purified water outlet is communicated to the bottom of the purifying cavity in the filter element.
The self-cleaning degerming water purifying device is characterized in that the top of the shell of the water purifying machine is provided with an exhaust hole, and a hydrophobic breathable film used for blocking water flow and being breathable is arranged on the exhaust hole.
The self-cleaning degerming water purifying device has the advantages that the ultrasonic transducers are divided into a plurality of groups, and the ultrasonic frequency power supply can control the ultrasonic transducers of different groups to work independently.
The self-cleaning degerming water purification device is characterized in that the filter element is provided with an impurity detection point for feeding back impurity detection data for the ultrasonic control system so as to automatically determine a cleaning mode.
The invention has the beneficial effects that:
(1) according to the invention, after the water purifier is used for a certain time, more dirt blocks can be generated on the filter screen, the ultrasonic cleaning mechanism on the shell of the water purifier can be started at the moment, the ultrasonic cleaning mechanism can generate micro bubbles in water in the shell of the water purifier by transmitting ultrasonic waves and keep high-speed vibration, so that the dirt can be damaged and separated from the adsorption of the filter element, the fatigue damage of a dirt layer is caused and the dirt layer is separated, meanwhile, the vibration of gas bubbles can be used for scrubbing the solid surface, and finally, the cleaned and filtered dirt is discharged under the action of the suction pump and the sewage discharge pipe, so that the purpose of cleaning the filter element is achieved;
(2) according to the invention, the macromolecule groups can be reduced through ultrasonic oscillation, the purpose of softening water is achieved, meanwhile, impurities accumulated outside the filter element are self-cleaned through high-frequency oscillation, and meanwhile, the characteristics of partial metal ions, such as bacteriostasis of copper and silver ions, can kill 99% of bacteria and microorganisms harmful to human bodies in water, effectively solve the problems of large amount of bacteria breeding in water, killing by using a chemical agent, harmful to human bodies, chemical residues and the like, and blocking by a large amount of microorganism impurities in the using process, and the like;
(3) according to the invention, the defect that bacteria filtration and beneficial mineral retention cannot be achieved in the water purifier penetration is solved, meanwhile, the replacement of the filter element can be reduced, the workload of replacing the filter element and the resource waste are reduced, the purified water can reach the standard of direct drinking, and the mineral components beneficial to human bodies are retained, so that the probability of diseases caused by drinking water is greatly reduced, and the healthy drinking water environment of many people is improved;
(4) according to the invention, the ultrasonic oscillation can be fully utilized to carry out small treatment on the macromolecular groups in the water to achieve the purpose of softening the water, meanwhile, the high-frequency oscillation carries out self-cleaning on impurities accumulated outside the filter element, harmful bacteria and microorganisms can be inhibited and killed, the filter element is prevented from being blocked by the microorganism impurities, the filtering effect is reduced, meanwhile, the filter element is replaced by a large amount of manpower on the surface, and the resource waste is reduced.
Drawings
FIG. 1 is a structural view of a vertical water purifier;
fig. 2 is a structural view of the horizontal water purifier.
Wherein: 1. a water purifier shell; 11. a tap water inlet; 12. a purified water outlet; 13. a blow-off pipe; 14. an exhaust hole; 15. a hydrophobic, breathable film; 16. a composite copper fiber layer; 2. a filter element; 21. a purification chamber; 3. an ultrasonic cleaning mechanism; 31. an ultrasonic frequency power supply; 32. an ultrasonic transducer; 4. a suction pump.
Detailed Description
The self-cleaning degerming purifier that this embodiment provided, the structure is as shown in fig. 1 and fig. 2, including purifier shell 1, is equipped with running water import 11 and purified water export 12 on the purifier shell 1, is equipped with filter core 2 in the purifier shell 1, and filter core 2 is copper fiber composite filter element 2, and filter core 2 is enclosed construction and forms and purifies chamber 21, is equipped with on the purifier shell 1 to be used for being the clear ultrasonic cleaning mechanism 3 of filter core 2.
As shown in fig. 1 and 2, the inner wall of the water purifier shell 1 contacting with water is provided with a copper fiber layer, the bottom of the water purifier shell 1 is provided with a sewage discharge pipe 13, the sewage discharge pipe 13 is provided with a suction pump 4 for discharging sewage, and the bottom surface of the water purifier shell 1 is inclined towards one side of the sewage discharge pipe 13.
As shown in fig. 1 and 2, the ultrasonic cleaning mechanism 3 includes a plurality of ultrasonic frequency power sources 31 disposed on the outer side wall of the water purifier housing 1, and an ultrasonic transducer 32 connected between the ultrasonic frequency power sources 31 and the water purifier housing 1. The ultrasonic transducer 32 is fixed on the water purifier shell 1 and arranged towards one side of the filter element 2, and the ultrasonic frequency power supply 31 and the ultrasonic transducer 32 are arranged around the water purifier shell 1.
As shown in fig. 1 and 2, the tap water inlet 11 is connected between the inner wall of the water purifier housing 1 and the filter element 2, and the purified water outlet 12 is connected to the bottom of the purification chamber 21 in the filter element 2. The top of the water purifier shell 1 is provided with an exhaust hole 14, and the exhaust hole 14 is provided with a hydrophobic breathable film 15 for blocking water flow and ventilating. The ultrasonic transducers 32 are divided into a plurality of groups, and the ultrasonic frequency power supply 31 can control the ultrasonic transducers 32 of different groups to work independently.
As shown in fig. 1 and 2, the filter element 2 is provided with an impurity detection point for feeding back impurity detection data for the ultrasonic control system to automatically determine the cleaning mode. The drain pipe 13 is provided with an opening and closing valve for controlling the opening and closing of the drain pipe 13.
The invention can fully utilize ultrasonic oscillation to reduce the size of the macromolecular groups so as to achieve the aim of softening water, and simultaneously self-clean impurities accumulated outside the filter element 2 by high-frequency oscillation. Meanwhile, due to the characteristics of partial metal ions, such as bacteriostasis of copper and silver ions, 99% of bacteria and microorganisms harmful to human bodies in water can be killed, the problems that a large amount of bacteria in water are bred, chemical agents are used for killing, the bacteria and the microorganisms are harmful to human bodies, chemical residues and the like, and a large amount of microorganism impurities are blocked in the using process, so that the effect of the filter element 2 is reduced and the like are solved. The probability of diseases caused by drinking water can be greatly reduced, and the healthy drinking environment of many people is improved.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a self-cleaning degerming purifier, includes water purifier shell (1), is equipped with running water inlet (11) and purified water export (12) on water purifier shell (1), is equipped with filter core (2), its characterized in that in water purifier shell (1): the water purifier is characterized in that the filter element (2) is a copper fiber composite filter element (2), the filter element (2) is of a closed structure and forms a purification cavity (21), an ultrasonic cleaning mechanism (3) for cleaning the filter element (2) is arranged on the water purifier shell (1), a composite copper fiber layer (16) is arranged on the inner wall of the water purifier shell (1) and in contact with water, a drain pipe (13) is arranged at the bottom of the water purifier shell (1), a suction pump (4) for discharging dirt is arranged on the drain pipe (13), and the bottom surface of the water purifier shell (1) is inclined towards one side of the drain pipe (13).
2. The self-cleaning degerming water purification unit of claim 1, characterized in that: the ultrasonic cleaning mechanism (3) comprises a plurality of ultrasonic frequency power supplies (31) arranged on the outer side wall of the water purifier shell (1) and an ultrasonic transducer (32) connected between the ultrasonic frequency power supplies (31) and the water purifier shell (1).
3. The self-cleaning degerming water purification unit of claim 2, characterized in that: the ultrasonic transducer (32) is fixed on the water purifier shell (1) and arranged towards one side of the filter element (2), and the ultrasonic frequency power supply (31) and the ultrasonic transducer (32) are arranged in a plurality of ways surrounding the water purifier shell (1).
4. The self-cleaning degerming water purification unit of claim 1, characterized in that: the tap water inlet (11) is communicated between the inner wall of the water purifier shell (1) and the filter element (2), and the purified water outlet (12) is communicated to the bottom of the purification cavity (21) in the filter element (2).
5. The self-cleaning degerming water purification unit of claim 1, characterized in that: the top of the water purifier shell (1) is provided with an exhaust hole (14), and the exhaust hole (14) is provided with a hydrophobic breathable film (15) for blocking water flow and ventilating.
6. The self-cleaning degerming water purification unit of claim 3, characterized in that: the ultrasonic transducers (32) are divided into a plurality of groups, and the ultrasonic frequency power supply (31) can control the ultrasonic transducers (32) of different groups to work independently.
7. The self-cleaning degerming water purification unit of claim 6, characterized in that: and an impurity detection point is arranged on the filter element (2) and used for feeding back impurity detection data for the ultrasonic control system so as to automatically determine the cleaning mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010040637.9A CN111099776A (en) | 2020-01-15 | 2020-01-15 | Self-cleaning degerming purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010040637.9A CN111099776A (en) | 2020-01-15 | 2020-01-15 | Self-cleaning degerming purifier |
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| Publication Number | Publication Date |
|---|---|
| CN111099776A true CN111099776A (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010040637.9A Pending CN111099776A (en) | 2020-01-15 | 2020-01-15 | Self-cleaning degerming purifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324801A (en) * | 2021-05-29 | 2021-08-31 | 林孔亮 | Sampler for detecting content of two insects in water and sampling method thereof |
| CN113599889A (en) * | 2021-04-25 | 2021-11-05 | 唐腊辉 | Ultrasonic water purifying device with vibration/noise reduction function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203065276U (en) * | 2012-11-29 | 2013-07-17 | 索拉诺半导体科技股份有限公司 | Purified water producer |
| CN107376452A (en) * | 2016-05-16 | 2017-11-24 | 魏华山 | A kind of intelligent self-cleaning ceramic water purifier |
| CN211847540U (en) * | 2020-01-15 | 2020-11-03 | 杨金刚 | Self-cleaning degerming purifier |
-
2020
- 2020-01-15 CN CN202010040637.9A patent/CN111099776A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203065276U (en) * | 2012-11-29 | 2013-07-17 | 索拉诺半导体科技股份有限公司 | Purified water producer |
| CN107376452A (en) * | 2016-05-16 | 2017-11-24 | 魏华山 | A kind of intelligent self-cleaning ceramic water purifier |
| CN211847540U (en) * | 2020-01-15 | 2020-11-03 | 杨金刚 | Self-cleaning degerming purifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113599889A (en) * | 2021-04-25 | 2021-11-05 | 唐腊辉 | Ultrasonic water purifying device with vibration/noise reduction function |
| CN113324801A (en) * | 2021-05-29 | 2021-08-31 | 林孔亮 | Sampler for detecting content of two insects in water and sampling method thereof |
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