CN211367189U - Pure water bubble membrane water purification system - Google Patents
Pure water bubble membrane water purification system Download PDFInfo
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- CN211367189U CN211367189U CN201922101971.6U CN201922101971U CN211367189U CN 211367189 U CN211367189 U CN 211367189U CN 201922101971 U CN201922101971 U CN 201922101971U CN 211367189 U CN211367189 U CN 211367189U
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Abstract
The utility model discloses a pure water bubble membrane water purification system, wherein a water inlet, a water outlet and a pure water outlet are arranged in a filter component; the filter assembly comprises a preposed filter element group, a water storage tank, a reverse osmosis filter element and a postposition filter element group; the water storage tank comprises a shell, an inner container capable of storing pure water is arranged in the shell, and a water flow channel is arranged between the inner container and the shell; a pressurizing assembly for pressurizing a water path is arranged between the water storage tank and the reverse osmosis filter element. This pure water bubble membrane water purification system washes route, in-core water reflux route, pure water bubble membrane route and pure water reflux route through setting up pure water system water route, raw water, makes the pure water of saving in the inner bag and the water that stays in the former water side of reverse osmosis filter core mix through pressure boost subassembly, makes the water TDS value of the former water side reduce in the reverse osmosis filter core. The utility model has the advantages of can reduce the first cup of water TDS value that restarts after the water purification system standby, effectively avoid a large amount of pure water to wash the osmotic membrane and lead to the pure water extravagant.
Description
Technical Field
The utility model relates to a water purification field especially relates to a pure water bubble membrane water purification system.
Background
At present, the normal nominal models such as 400G, 500G, 600G of current domestic big flux RO/NF water purification machine, because reverse osmosis and the used core member of nanofiltration water purification are the pellicle, when the water purifier standby, the TDS value of the water that stops in the former water side is higher than the TDS value that stops in the water of pure water side, make in the water of the easy infiltration of salt of the water of former water side to the water of pure water side, finally can make the water salt concentration of the former water side of pellicle and pure water side both sides unanimous basically. Therefore, when the water purifier is in standby for a period of time, the TDS value of the first cup of water taken by a user is high, and the water quality cannot meet the filtering requirement. In order to reduce the water salinity of both sides of the RO membrane/NF membrane of the water purifier in a standby state, the conventional reverse osmosis and nanofiltration water purifier uses the pure water stored in the water purifier to flush the raw water side of the RO membrane/NF membrane and discharges the water after flushing the membrane so as to reduce the water salinity of the raw water side of the RO membrane/NF membrane and further prolong the service life of the RO membrane/NF membrane, but the water salinity is wasted on pure water resources.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a need not to use large-traffic water washing rete still can effectively reduce the pure water bubble membrane water purification system of the first cup of water TDS value that restarts after the water purification system standby.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a pure water bubble membrane water purification system comprises a filter assembly, wherein a water inlet for raw water to flow in, a water outlet for concentrated water to discharge and a pure water outlet for pure water to flow out are arranged in the filter assembly; the filter assembly comprises a preposed filter element group, a water storage tank, a reverse osmosis filter element and a postposition filter element group; the reverse osmosis filter element is provided with a raw water inlet, a concentrated water outlet and a pure water outlet; particularly, the water storage tank comprises a shell, an inner container capable of storing pure water is arranged in the shell, and a water flow channel is arranged between the inner container and the shell; a pressurizing assembly for pressurizing a water path is arranged between the water storage tank and the reverse osmosis filter element;
the water flows along the water inlet, the preposed filter element group, the water flow channel, the pressurizing assembly, the raw water inlet, the reverse osmosis filter element, the pure water outlet, the postposition filter element group and the pure water outlet to form a pure water making path;
the water flows along the water inlet, the preposed filter element group, the water flow channel, the pressurizing assembly, the raw water inlet, the fine filter element, the concentrated water outlet and the water outlet to form a raw water washing path;
the water flow circulates along the reverse osmosis filter element, the concentrated water outlet, the pressurizing assembly and the water flow channel to form an in-core water return flow path;
water flows are communicated with the reverse osmosis filter element along the inner container and the raw water inlet to form a pure water bubble film path;
the water flow circulates with the inner container along the pure water outlet to form a pure water reflux path.
The principle of the utility model is as follows:
the water purification system has three working states, namely a pure water production state, a raw water flushing state and a pure water bubble film state.
And (3) pure water making state: when the water purification system is in a water purification state, tap water or other raw water flows into the filter assembly through the water inlet, flows into the water flow channel through the preposed filter element group and flows to the reverse osmosis filter element through the water flow channel. And after being filtered by the reverse osmosis filter element, most of the purified water flows out through the pure water outlet for users to use, and a small part of the purified water is shunted to the inner container through the pure water backflow path and is stored. The concentrated water generated in the filtering process is discharged through a concentrated water outlet.
Raw water flushing state: after the user stops getting water, the water purification system can enter a flushing state. At this time, the pure water outlet stops discharging water. Running water or other raw water flows along the raw water flushing path, flows into the water flow channel through the preposed filter element group, flows to the raw water inlet of the reverse osmosis filter element through the water flow channel, enters the raw water side of the reverse osmosis filter element, and extrudes the water staying at the raw water side of the reverse osmosis filter element to the concentrated water outlet for discharge. In the process, the pressurizing assembly acts to enable the pure water bubble film path to form negative pressure, and the pure water stored in the liner does not flow into the reverse osmosis filter element along the pure water bubble film path.
The pure water bubble film state: after the user stops getting water, this water purification system can switch to the pure water bubble membrane state. At this time, no external water flows into the water purification system, and no water is discharged to the outside. The pressurizing assembly acts to enable water staying on the raw water side in the reverse osmosis filter element to flow along the water return path in the reverse osmosis filter element, the water staying in the reverse osmosis filter element is pumped out from the concentrated water outlet and flows into the water flow channel of the water storage tank through the pressurizing assembly, so that pressure difference is formed between the raw water side of the reverse osmosis filter element and the inner container, and the pure water stored in the inner container flows out and flows to the raw water inlet and then flows to the raw water side of the reverse osmosis filter element. The water flowing to the raw water side of the reverse osmosis filter element flows out from the concentrated water outlet and returns to the water flow channel of the water storage tank under the pressurization effect of the pressurization component.
In the above-mentioned in-process, the pure water of depositing originally in the inner bag can replace the water that stays originally in reverse osmosis filter core raw water side gradually, make the water TDS value of raw water side reduce in the reverse osmosis filter core, tend to be close with the water TDS value of reverse osmosis filter core pure water side, even the raw water side and the pure water side of reverse osmosis filter core take place the osmosis phenomenon under water purification system standby state, the water TDS value that also can not lead to the pure water side rises by a wide margin, thereby avoid the problem that water purification system first cup water TDS value exceeds standard after long-time standby.
Under the pure water bubble membrane state, the flow of the water that flows in water purification system is not many, and water purification system accessible time control or TDS value detect the mode control such as originally save the outflow of the pure water in the inner bag, guarantee originally that the outflow of the pure water of saving in the inner bag can satisfy in the reverse osmosis filter core that the water TDS value of former water side reduces to the setting value can.
The water circulating in the water purification system stays at the raw water side of the water flow channel and the reverse osmosis filter element after the pure water bubble membrane state is finished, and cannot be discharged out of the water purification system. When the water purification system produces water for the next time, the water staying in the water flow channel and the reverse osmosis filter element is completely reused, and pure water and concentrated water are obtained by filtering through the reverse osmosis filter element.
The liner of this water storage tank preferably adopts the liner that can receive the pressure deformation, therefore, after this water purification system switches to the bubble membrane state, the hydroenergy that gets into the rivers passageway extrudees the liner and makes the liner produce deformation to the pure water that makes to save in the liner can flow out to the reverse osmosis filter core more smoothly.
The switching of the water preparation state, the flushing state and the bubble membrane state of the water purification system can be realized based on the opening and closing control of a valve, specifically, a first control valve can be arranged between the preposed filter element group and the water flow channel, a second control valve can be arranged between the water flow channel and the inlet of the pressurizing component, a third control valve can be arranged between the concentrated water outlet and the inlet of the pressurizing component, a fourth control valve can be arranged between the outlet of the pressurizing component and the raw water inlet, a fifth control valve can be arranged between the concentrated water outlet and the water outlet, and a sixth control valve can be arranged between the outlet of the pressurizing component and the water flow channel. The first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve and the sixth control valve can be manually operated or electronically controlled to open or close the valves, so that the working state switching of the water purification system is realized.
The utility model has the advantages of can reduce the first cup of water TDS value that restarts after the water purification system standby, effectively avoid a large amount of pure water to wash the osmotic membrane and lead to the pure water extravagant.
Drawings
Fig. 1 is a schematic diagram of a water purification system in an embodiment of the present invention.
Description of reference numerals: 1-a water inlet; 2-preposing a filter element group; 3-water storage tank; 4-a booster pump; 5-a reverse osmosis filter element; 6-post filter element group; 7-a water outlet; 8-water outlet; 9-raw water inlet; 10-a concentrated water outlet; 11-a pure water outlet; 12-a housing; 13-inner container; 14-a water flow channel; 15-a first control valve; 16-a second control valve; 17-a third control valve; 18-a fourth control valve; 19-a sixth control valve; 20-a first check valve; 21-a second check valve; 22-a fifth control valve; 23-a third check valve; 24-a pressurized inlet; 25-a pressurized outlet; 26-a pressure reducing valve; 27-high voltage switch.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
A water purification system as shown in fig. 1, which comprises a water inlet 1, a pre-filter element group 2, a water storage tank 3, a booster pump 4 as a boosting component, a reverse osmosis filter element 5, a post-filter element group 6, a water outlet 7 and a pure water outlet 8, wherein the reverse osmosis filter element 5 is provided with a raw water inlet 9 for raw water to flow into the reverse osmosis filter element 5, a concentrated water outlet 10 for concentrated water to flow out of the reverse osmosis filter element 5 and a pure water outlet 11 for pure water to flow out of the reverse osmosis filter element 5; the water storage tank 3 comprises a shell 12, a pressure deformable inner container 13 is arranged in the shell 12, a water flow channel 14 is arranged between the inner container 13 and the shell 12, and the water flow channel 14 is arranged around the inner container 13 in the shell 12.
In this embodiment, the water inlet 1 is used as a water inlet for raw water and is communicated with the pre-filter element group 2. The pre-filter element group 2 is used as a primary filter element in the water purification system, and the material of the pre-filter element group can adopt the existing conventional material, such as PP cotton. The water storage tank 3 is arranged at the downstream of the preposed filter element group 2, a pressure reducing valve 26 and a first control valve 15 are arranged between the preposed filter element group 2 and the water storage tank 3, and the preposed filter element group 2 is communicated to a water flow channel 14 of the water storage tank 3 through the first control valve 15.
In this embodiment, the booster pump 4 is provided with a booster inlet 24 and a booster outlet 25, wherein the booster inlet 24 is communicated with the water flow channel 14, and a second control valve 16 is arranged between the booster inlet 24 and the water flow channel 14; in addition, the pressurizing inlet 24 is also communicated with the concentrated water outlet 10, and a third control valve 17 is arranged between the pressurizing inlet 24 and the concentrated water outlet 10. The pressurized outlet 25 is communicated with the raw water inlet 9, and a fourth control valve 18 is arranged between the raw water inlet 9 and the pressurized outlet 25; further, the booster outlet 25 is also communicated with the water flow passage 14, and a sixth control valve 19 is provided between the booster outlet 25 and the water flow passage 14.
In this embodiment, the raw water inlet 9 is communicated with the inner container 13, and a first check valve 20 is disposed between the raw water inlet 9 and the inner container 13 to ensure that water can only flow from the inner container 13 to the raw water inlet 9 when the water flows between the inner container 13 and the raw water inlet 9.
In this embodiment, the concentrated water outlet 10 of the reverse osmosis filter element 5 is further communicated with the water outlet 7, and a second check valve 21 and a fifth control valve 22 are arranged between the concentrated water outlet 10 and the water outlet 7. The second non-return valve 21 ensures that the water flow only flows from the concentrate outlet 10 to the drain 7 when the water flow is between the concentrate outlet 10 and the drain 7.
In this embodiment, the pure water outlet 11 of the reverse osmosis filter element 5 is communicated with the post-filter element group 6, and a third check valve 23 is arranged between the pure water outlet 11 and the post-filter element group 6. The third check valve 23 can ensure that when water flows between the pure water outlet 11 and the rear filter element group 6, the water can only flow from the pure water outlet 11 to the rear filter element group 6. A high-voltage switch 27 is also arranged at the downstream of the post-filter element group 6 to detect the internal pressure of the pipeline. In addition, the pure water outlet 11 is also communicated with the inner container 13.
In this embodiment, the purified water outlet 8 is used as an outlet of purified water and is communicated with the post-filter element group 6. The post-filter element group 6 is used as a post-filter element of the water purification system and is mainly used for improving the taste of purified water filtered by the reverse osmosis filter element 5. The material of the post-filter element group 6 can adopt the conventional design, such as carbon rods and the like.
In the present embodiment, the first control valve 15, the second control valve 16, the third control valve 17, the fourth control valve 18, the fifth control valve 22, and the sixth control valve 19 are all solenoid valves. The water purification system can control the on-off state of the first control valve 15, the second control valve 16, the third control valve 17, the fourth control valve 18, the fifth control valve 22 and the sixth control valve 19 within a set time through the setting of a control module, such as a PLC control panel, so as to realize the switching of the water flow path of the water purification system.
In this embodiment, water flows along the water inlet 1, the pressure reducing valve 26, the pre-filter element group 2, the first control valve 15, the water flow channel 14, the second control valve 16, the booster pump 4, the fourth control valve 18, the raw water inlet 9, the reverse osmosis filter element 5, the pure water outlet 11, the third check valve 23, the post-filter element group 6, the high-pressure switch 27 and the pure water outlet 8 in sequence to form a pure water making path of the pure water system;
the water flows along the water inlet 1, the pressure reducing valve 26, the preposed filter element group 2, the first control valve 15, the water flow channel 14, the second control valve 16, the booster pump 4, the fourth control valve 18, the raw water inlet 9, the reverse osmosis filter element 5, the pure water outlet 11 and the liner 13 in sequence to form a pure water return path of the water purification system;
the water flow flows in sequence along the water inlet 1, the pressure reducing valve 26, the preposed filter element group 2, the first control valve 15, the water flow channel 14, the second control valve 16, the booster pump 4, the fourth control valve 18, the raw water inlet 9, the reverse osmosis filter element 5, the concentrated water outlet 10, the second check valve 21, the fifth control valve 22 and the water outlet 7 to form a raw water flushing path of the water purification system;
the water flow is communicated with the water flow channel 14 along the reverse osmosis filter element 5, the concentrated water outlet 10, the third control valve 17, the booster pump 4 and the sixth control valve 19 in sequence to form an in-core water return flow path of the water purification system;
the water flows along the inner container 13, the first check valve 20, the raw water inlet 9, the reverse osmosis filter element 5 and the concentrated water outlet 10 in sequence to form a pure water bubble film path of the water purification system.
Based on the water flow path, the pure water bubble film water purification system has three working states, namely a pure water production state, a raw water flushing state and a pure water bubble film state.
When the water purification system is in a pure water production state, the water inlet 1 is opened, the pure water outlet 8 is opened, the first control valve 15 is opened, the second control valve 16 is opened, the third control valve 17 is closed, the fourth control valve 18 is opened, the fifth control valve 22 is opened, and the sixth control valve 19 is closed, at this time, tap water flows into the preposed filter element group 2 from the water inlet 1 through the reducing valve 26, flows into the water flow channel 14 through the first control valve 15, then flows to the pressurizing inlet 24 of the pressurizing pump 4 through the second control valve 16, and flows to the fourth control valve 18 from the pressurizing outlet 25. After passing through the fourth control valve 18, the water flows into the reverse osmosis cartridge 5 through the raw water inlet 9. After being filtered by the reverse osmosis filter element 5, most of the purified water flows to the post-arranged filter element group 6 through the pure water outlet 11 and the third check valve 23, flows out from the purified water outlet 8 after being filtered by the post-arranged filter element group 6, and is used by a user, while a small part of the purified water is shunted through the pure water backflow path, flows to the inner container 13 from the pure water outlet 11 and is stored in the inner container 13. The concentrated water generated during the filtering process flows to the fifth control valve 22 through the concentrated water outlet 10 and is then discharged from the drain port 7.
When the water purification system is in a raw water flushing state, the water inlet 1 is opened, the purified water outlet 8 is closed, the first control valve 15 is opened, the second control valve 16 is opened, the third control valve 17 is closed, the fourth control valve 18 is opened, the fifth control valve 22 is opened, and the sixth control valve 19 is closed, at this time, tap water flows into the preposed filter element group 2 from the water inlet 1 through the pressure reducing valve 26, flows into the water flow channel 14 through the first control valve 15, then flows to the pressurizing inlet 24 of the pressurizing pump 4 through the second control valve 16, and flows to the fourth control valve 18 from the pressurizing outlet 25. After passing through the fourth control valve 18, the water flows into the reverse osmosis cartridge through the raw water inlet 9. Since the purified water outlet 8 is closed, the reverse osmosis filter element 5 does not filter the purified water, and the tap water flowing into the reverse osmosis filter element 5 washes the raw water side of the reverse osmosis membrane, flows to the fifth control valve 22 through the concentrated water outlet 10, and is then discharged from the water outlet 7. This process of washing's effect lies in the water that the discharge stayed in 5 former water sides of reverse osmosis filter core, clean reverse osmosis membrane and tentatively reduce the water TDS value of 5 former water sides of reverse osmosis filter core.
When the water purification system is in a pure water bubble membrane state, the water inlet 1 is closed, the pure water outlet 8 is closed, the first control valve 15 is closed, the second control valve 16 is closed, the third control valve 17 is opened, the fourth control valve 18 is closed, the fifth control valve 22 is closed, the sixth control valve 19 is opened, at the moment, the booster pump 4 acts, so that the water staying at the raw water side in the reverse osmosis filter element 5 flows along the in-core water return path, the water staying in the reverse osmosis filter element 5 is pumped out from the concentrated water outlet 10, flows to the booster component through the third control valve 17, then flows to the sixth control valve 19 through the booster outlet 25 and finally flows into the water flow channel 14 of the water storage tank 3, at the same time, the inner container 13 of the water storage tank 3 is pressed by the water in the water flow channel 14 to deform, so that the pure water stored in the inner container 13 is extruded from the inner container 13, flows to the raw water inlet 9 through the first check valve 20, and further flows into the raw water side of the reverse osmosis filter element 5. The water flowing to the raw water side of the reverse osmosis filter element 5 flows out from the concentrated water outlet and returns to the water flow channel 14 of the water storage tank 3 under the boosting action of the booster pump 4.
In the above-mentioned in-process, the pure water of originally saving in inner bag 13 can replace the water that stays in the former water side of reverse osmosis filter core 5 gradually, makes the water TDS value of the former water side reduce in the reverse osmosis filter core 5, makes the water TDS value of the former water side of reverse osmosis filter core 5 and the water TDS value of the pure water side of reverse osmosis filter core 5 tend to be close, has avoided water purification system under the standby state, and the former water side of reverse osmosis filter core 5 and the pure water side appear the osmosis phenomenon and lead to the water TDS value of pure water side to rise by a wide margin. When the water purification system is switched from the pure water bubble membrane state to the pure water making state, most of water in the core water return path, the pure water bubble membrane path and the inner container 13 enters the reverse osmosis filter element 5 again through the raw water inlet 9 for filtration and reuse.
The preferred embodiment of the present invention is only listed in the present specification, and all the technical changes equivalent to those made under the working principle and thought of the present invention are considered as the protection scope of the present invention.
Claims (10)
1. A pure water bubble membrane water purification system is characterized by comprising a filter assembly, wherein a water inlet for raw water to flow in, a water outlet for concentrated water to discharge and a pure water outlet for pure water to flow out are arranged in the filter assembly; the filter assembly comprises a preposed filter element group, a water storage tank, a reverse osmosis filter element and a postposition filter element group; the reverse osmosis filter element is provided with a raw water inlet, a concentrated water outlet and a pure water outlet; particularly, the water storage tank comprises a shell, an inner container capable of storing pure water is arranged in the shell, and a water flow channel is arranged between the inner container and the shell; a pressurizing assembly for pressurizing a water path is arranged between the water storage tank and the reverse osmosis filter element;
the water flows along the water inlet, the preposed filter element group, the water flow channel, the pressurizing assembly, the raw water inlet, the reverse osmosis filter element, the pure water outlet, the postposition filter element group and the pure water outlet to form a pure water making path;
the water flows along the water inlet, the preposed filter element group, the water flow channel, the pressurizing assembly, the raw water inlet, the fine filter element, the concentrated water outlet and the water outlet to form a raw water washing path;
the water flow circulates along the reverse osmosis filter element, the concentrated water outlet, the pressurizing assembly and the water flow channel to form an in-core water return flow path;
water flows are communicated with the reverse osmosis filter element along the inner container and the raw water inlet to form a pure water bubble film path;
the water flow circulates with the inner container along the pure water outlet to form a pure water reflux path.
2. The pure water bubble membrane water purification system of claim 1, wherein the inner container is a pressure deformable inner container, and water in the water flow channel can squeeze the inner container and deform the inner container.
3. The system of claim 2, wherein the water channel is disposed around the inner container in the housing.
4. The pure water bubble membrane water purification system according to claim 1, wherein a first control valve is arranged between the preposed filter element group and the water flow channel; a second control valve is arranged between the water flow channel and the inlet of the pressurizing assembly; a third control valve is arranged between the concentrated water outlet and the inlet of the pressurizing assembly; a fourth control valve is arranged between the outlet of the pressurizing assembly and the raw water inlet; a fifth control valve is arranged at the concentrated water outlet and the water outlet; and a sixth control valve is arranged between the outlet of the pressurizing assembly and the water flow channel.
5. The pure water bubble membrane water purification system according to claim 4, wherein water flows along the water inlet, the pre-filter element group, the first control valve, the water flow channel, the second control valve, the pressurizing assembly, the fourth control valve, the raw water inlet, the reverse osmosis filter element, the pure water outlet and the inner container in sequence to form a pure water backflow path.
6. The pure water bubble membrane water purification system according to claim 4, wherein water flows along the water inlet, the pre-filter element group, the first control valve, the water flow channel, the second control valve, the pressure boosting component, the fourth control valve, the raw water inlet, the reverse osmosis filter element, the pure water outlet, the third check valve, the post-filter element group and the pure water outlet in sequence to form a pure water making path.
7. The pure water bubble membrane water purification system of claim 4, wherein the water flows along the water inlet, the pre-filter element group, the first control valve, the water flow channel, the second control valve, the pressure boosting component, the fourth control valve, the raw water inlet, the reverse osmosis filter element, the concentrated water outlet, the second check valve, the fifth control valve and the water outlet in sequence to form a raw water flushing path.
8. The pure water bubble membrane water purification system of claim 4, wherein the water flow flows along the concentrated water outlet, the third control valve, the pressure boosting component, the sixth control valve and the water flow channel in sequence to form an in-core water return flow path.
9. The pure water bubble membrane water purification system according to claim 1, wherein a first check valve is arranged between the raw water inlet and the inner container; a second check valve is arranged between the concentrated water outlet and the water outlet; and a third check valve is arranged between the pure water outlet and the rear filter element group.
10. The pure water bubble membrane water purification system according to claim 9, wherein the water flows along the inner container, the first check valve, the raw water inlet, the reverse osmosis filter element and the concentrated water outlet in sequence to form a pure water bubble membrane path.
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| CN201922101971.6U CN211367189U (en) | 2019-11-27 | 2019-11-27 | Pure water bubble membrane water purification system |
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| CN201922101971.6U CN211367189U (en) | 2019-11-27 | 2019-11-27 | Pure water bubble membrane water purification system |
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| CN211367189U true CN211367189U (en) | 2020-08-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786732A (en) * | 2021-10-21 | 2021-12-14 | 佛山市惠特普环保科技有限公司 | Driving water storage tank for water purifying equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786732A (en) * | 2021-10-21 | 2021-12-14 | 佛山市惠特普环保科技有限公司 | Driving water storage tank for water purifying equipment |
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Effective date of registration: 20210521 Address after: Room 18, 6th floor, 77 Longzhou West Road, Xixi community residents committee, Longjiang Town, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong lingshang water purification technology Co.,Ltd. Address before: 528000 one of the third industrial zones of Xixi, Longjiang Town, Shunde District, Foshan, Guangdong. Patentee before: GUANGDONG WAPU TECHNOLOGY Co.,Ltd. Patentee before: Guangdong Welland Life Technology Co.,Ltd. |
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