CN215049377U - Thing allies oneself with fuses straight drinking water system of pipeline - Google Patents
Thing allies oneself with fuses straight drinking water system of pipeline Download PDFInfo
- Publication number
- CN215049377U CN215049377U CN202120456082.6U CN202120456082U CN215049377U CN 215049377 U CN215049377 U CN 215049377U CN 202120456082 U CN202120456082 U CN 202120456082U CN 215049377 U CN215049377 U CN 215049377U
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- Prior art keywords
- water
- pipe
- drinking water
- return
- straight drinking
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- 235000020188 drinking water Nutrition 0.000 title claims abstract description 55
- 239000003651 drinking water Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 203
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 32
- 238000000746 purification Methods 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000001954 sterilising effect Effects 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 9
- 230000004927 fusion Effects 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract 2
- 239000007924 injection Substances 0.000 claims abstract 2
- 239000008399 tap water Substances 0.000 claims description 34
- 235000020679 tap water Nutrition 0.000 claims description 34
- 238000001728 nano-filtration Methods 0.000 claims description 31
- 239000008213 purified water Substances 0.000 claims description 29
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract 1
- 239000002365 multiple layer Substances 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 12
- 239000000126 substance Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 235000013619 trace mineral Nutrition 0.000 description 6
- 239000011573 trace mineral Substances 0.000 description 6
- 241000700605 Viruses Species 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000249 desinfective effect Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 231100000357 carcinogen Toxicity 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000035622 drinking Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 208000022362 bacterial infectious disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
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Abstract
The utility model relates to a straight drinking water field, the utility model discloses a thing allies oneself with directly drinks water system of fusion pipeline, including supplying the return water pipe network, supply the return water pipe network including running water inlet tube, water purification pipe, straight drinking water delivery pipe and the wet return that connects gradually, the last former water tank, former water pump, sand filter and carbon filter, high-pressure pump and the host computer of receiving of having connected gradually of running water inlet tube, it passes through the water purification pipe and links to each other with the water purification case to receive the host computer, be equipped with ultraviolet sterilizing equipment in the water purification case, and external straight drinking water delivery pipe, connect converter, feed pump and the user's water injection well choke that are equipped with in proper order on the straight drinking water delivery pipe, the wet return sets up straight drinking water delivery pipe end and with the water purification case links to each other, supply to be equipped with a plurality of solenoid valves on the return water pipe network, the solenoid valve is connected with electrical system. The utility model discloses obtain straight drinking water with running water multiple-layer filtering and disinfection, and can regularly with straight drinking water backward flow carry out the circulation disinfection, guarantee the sanitary safety that supplies water.
Description
Technical Field
The utility model relates to a straight drinking water field, concretely relates to thing allies oneself with fuses straight drinking water system of pipeline.
Background
With the development of national economy, social progress and improvement of health consciousness of the masses of people, the requirements of people on the quality of drinking water for life are gradually improved, but in the current mainstream urban tap water pipe network system, dead water phenomenon can occur when the system is not used for a long time at night, holidays and the like, the city tap water can not be regularly returned and circulated, and secondary pollution of water quality is caused by bacterial infection easily bred in the process of conveying the tap water, so that the quality of the tap water of some urban residents is reduced, and the sanitary safety of water quality drinking is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a thing allies oneself with directly drinks water system of fusion pipeline filters the running water, disinfects to improve running water quality of water, reach the straight drinking water standard, guarantee to drink safety.
In order to achieve the above purpose, the technical scheme of the utility model is that: a direct drinking water system of an internet of things fusion pipeline comprises a water supply and return pipe network, wherein the water supply and return pipe network comprises a tap water inlet pipe, a purified water pipe, a direct drinking water supply pipe and a return pipe which are sequentially connected, a raw water tank, a raw water pump, a sand filter, a carbon filter, a high-pressure pump and a nanofiltration host are sequentially connected on the tap water inlet pipe, the nanofiltration host is connected with the purified water tank through the purified water pipe, an ultraviolet sterilization device is arranged in the purified water tank and is externally connected with the direct drinking water supply pipe, a frequency converter, a water supply pump and a user water nozzle are sequentially connected on the direct drinking water supply pipe, the return pipe is arranged at the tail end of the direct drinking water supply pipe and is connected with the purified water tank, a plurality of electromagnetic valves are arranged on the water supply and return pipe network, the electromagnetic valves are connected with an electric control system, large granular substances are pretreated in the tap water through the sand filter and the carbon filter, and then the nanofiltration host is used for deep treatment, get rid of slight impurity and noxious material, obtain the water purification, the water purification obtains straight drinking water through ultraviolet sterilizing equipment's disinfection of disinfecting, change at different periods according to the user water consumption, utilize PID automatic control technique, combine the converter, periodic change is with the rotational speed of adjusting the feed pump, realize the constant voltage of straight drinking water delivery pipe and supply water, utilize the wet return pipe at last regularly to flow back straight drinking water to the water purification case and carry out the circulation disinfection, guarantee the sanitary safety who supplies water.
Further, the carbon filter is an activated carbon filter and is used for adsorbing organic matters, harmful metal ions and other carcinogens in the tap water and removing residual hydrogen, bacteria and the like in the tap water, so that the content of the oxidant and the organic matters in the treated tap water meets the requirement of the quality of direct drinking water.
Furthermore, the nanofiltration main machine is internally provided with a nanofiltration membrane for separating water molecules and dissolved impurities in the tap water, removing toxic and harmful substances, such as bacteria, viruses and chemical substances, in the tap water, and simultaneously retaining trace elements and mineral substances in the tap water.
Further, install turbidity appearance and conductivity sensor on the carbon filter with the running water inlet tube between the host computer of receiving nanofiltration for the quality of water condition after the monitoring preliminary treatment, for receiving the host computer and handling and provide data support, receive and install the quality of water sensor on the water purification pipe behind the host computer of receiving nanofiltration for the quality of water condition after the host computer of receiving nanofiltration handles is used for the analysis.
Furthermore, the electromagnetic valve comprises a flushing electromagnetic valve, the nanofiltration main machine is connected with a concentrated water pipe, and the flushing electromagnetic valve is arranged on the concentrated water pipe and used for discharging concentrated water.
Furthermore, the water purification tank is externally connected with an air filter for preventing bacteria in the air outside the tank from entering the water purification tank and ensuring that the water source is not polluted by external bacteria.
Further, the ultraviolet sterilization device is an immersed ultraviolet sterilization device, and bacteria and viruses in the purified water are sterilized by ultraviolet rays to obtain the direct drinking water.
Further, the external independent circulation disinfection water pipe of water purification case, circulation disinfection water piping connection has circulating pump and ozone machine for with hydrologic cycle, carry out ozone sterilization simultaneously, improve the water supply reliability.
Further, the solenoid valve still includes a return water solenoid valve, return water solenoid valve and one overflow the ultraviolet lamp and set gradually on the return water pipe for carry out secondary disinfection again when flowing back to the water purification case regularly with straight drinking water.
Furthermore, the raw water tank and the purified water tank are both provided with a water level controller and a water level gauge for ensuring the normal height of the water level of the water tank, adjusting the water supply amount and the water demand of the water treatment equipment, ensuring the normal operation of the equipment and ensuring the safety and reliability of water supply.
The utility model discloses following beneficial effect has:
the utility model discloses well running water passes through sand filter and carbon filter preliminary treatment and falls the large granule material, the rethread is received and is strained the host computer and carry out advanced treatment, get rid of slight impurity and noxious material, obtain the water purification, the water purification obtains straight drinking water through ultraviolet sterilizing equipment's disinfection of disinfecting, change at different periods according to user's water consumption, utilize PID automatic control technique, combine the converter, periodic change is with the rotational speed of adjusting the working shaft, realize the constant voltage water supply of straight drinking water delivery pipe, utilize the wet return to flow back straight drinking water regularly to carry out the circulation disinfection in the water purification case at last, guarantee the sanitary safety who supplies water.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an electromagnetic valve; 2. a raw water tank; 3. a raw water pump; 4. a check valve; 5. a sand filter; 6. a carbon filter; 7. a high pressure pump; 8. a nanofiltration host; 9. adjusting a valve; 10. a flow meter; 11. a tap water inlet pipe; 12. a concentrated water pipe; 13. a water purifying pipe; 14. a direct drinking water supply pipe; 15. circularly disinfecting the water pipe; 16. a water return pipe; 17. a water purifying tank; 18. a water supply pump; 19. a user water nozzle; 20. an ozone machine; 21. a circulation pump; 22. an over-current ultraviolet lamp; 23. and detecting the drain pipe.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
Referring to fig. 1, as a preferred embodiment of the present invention, a direct drinking water system with integrated internet of things is provided, which comprises a water supply and return pipe network, wherein the water supply and return pipe network comprises a tap water inlet pipe 11, a purified water pipe 13, a direct drinking water supply pipe 14 and a water return pipe 16, which are connected in sequence, the tap water inlet pipe 11 is sequentially connected with a raw water tank 2, a raw water pump 3, a sand filter 5, a carbon filter 6, a high pressure pump 7 and a nanofiltration host 8, the nanofiltration host 8 is connected with a purified water tank 17 through the purified water pipe 13, an ultraviolet sterilization device (not shown) is arranged in the purified water tank 17 and is externally connected with the direct drinking water supply pipe 14, the direct drinking water supply pipe 14 is sequentially connected with a frequency converter, a water supply pump 18 and a user water nozzle 19, the water return pipe 16 is arranged at the end of the direct drinking water supply pipe 14 and is connected with the purified water tank 17, the water supply and return pipe network is provided with a plurality of electromagnetic valves 1, the solenoid valve 1 is connected with an electric control system, large granular substances are pre-treated through a sand filter 5 and a carbon filter 6 in tap water, then the main nanofiltration machine 8 is used for deep treatment, fine impurities and toxic substances are removed, purified water is obtained, the purified water is directly drunk by sterilization and disinfection of an ultraviolet sterilization device, the change of water consumption at different periods is realized according to users, the PID automatic control technology is utilized, a frequency converter (not shown) is combined, the rotating speed of a water supply pump 18 is adjusted through periodic change, constant-pressure water supply of a direct drinking water supply pipe 14 is realized, finally, the direct drinking water is regularly returned to a water purification tank 17 through a water return pipe 16 for cyclic disinfection, and the sanitation and safety of water supply are ensured.
The central control component of the electric control system is a programmable controller, and is used for realizing full-automatic and intelligent operation of the system by combining with a plurality of water level sensors (not shown) and a dynamic pressure controller (not shown).
Wherein, electrical system still includes on-line monitoring equipment (not shown in the figure), on-line monitoring equipment with programmable controller carries out MODBUS data communication, utilizes internet of things and cloud service, and real-time on-line monitoring system behavior of monitor terminal or mobile terminal APP and quality of water condition, for example, detect turbidity, conductivity and the PH value etc. of straight drinking water.
Wherein, supply the return water pipe network and install a plurality of check valves 4 and manometer (not shown in the figure), prevent rivers adverse current, observe simultaneously and supply return water pipe network everywhere pressure variation.
Preferably, the carbon filter 6 is an activated carbon filter, and is used for adsorbing organic matters, harmful metal ions and other carcinogens in tap water, and removing residual hydrogen, bacteria and the like in the tap water, so that the content of the oxidant and the organic matters in the treated tap water meets the requirement of the quality of direct drinking water.
Preferably, the nanofiltration main machine 8 is provided with a nanofiltration membrane inside, and is used for separating water molecules and dissolved impurities in the tap water, removing toxic and harmful substances, such as bacteria, viruses and chemical substances, in the tap water, and simultaneously retaining trace elements and minerals in the tap water.
Preferably, a turbidity meter (not shown) and a conductivity sensor (not shown) are installed on a tap water inlet pipe 11 between the carbon filter 6 and the nanofiltration host 8, and are used for monitoring the water quality condition after pretreatment and providing data support for the nanofiltration host 8, and a water quality sensor (not shown) is installed on a purified water pipe 13 behind the nanofiltration host 8 and is used for analyzing the water quality condition after the nanofiltration host 8.
Preferably, the solenoid valve 1 comprises a flushing solenoid valve, the nanofiltration host machine 8 is further connected with a concentrated water pipe 12, the flushing solenoid valve is arranged on the concentrated water pipe 12 and used for discharging concentrated water, and the concentrated water pipe 12 is further provided with a regulating valve 9 and a flowmeter 10 and used for regulating and displaying water flow.
Preferably, the clean water tank 17 is externally connected with an air filter (not shown) for preventing bacteria in the air outside the tank from entering the clean water tank 17, so as to ensure that the water source is not polluted by the external bacteria.
Preferably, the ultraviolet sterilization device is an immersion type ultraviolet sterilization device, and bacteria and viruses in the purified water are sterilized by ultraviolet rays to obtain the direct drinking water.
The immersed ultraviolet sterilization device comprises a quartz tube immersed in the water purification tank 17, a lamp tube outside the water purification tank 17 and electrical facilities, wherein the electrical facilities comprise a power supply display, an accident alarm, an ultraviolet timer and a switch, and the sterilization intensity is reasonably controlled.
Preferably, the purified water tank 17 is externally connected with an independent circulating disinfection water pipe 15, and the circulating disinfection water pipe 15 is connected with a circulating pump 21 and an ozone machine 20, and is used for circulating water and performing ozone sterilization at the same time, so that the water supply reliability is improved.
Preferably, the solenoid valve 1 further comprises a water return solenoid valve, the water return solenoid valve and the overflow ultraviolet lamp 22 are sequentially arranged on the water return pipe 16 and used for regularly returning the direct drinking water to the purified water tank 17 and then performing secondary disinfection.
Preferably, the raw water tank 2 and the purified water tank 17 are both provided with a water level controller and a water level gauge for ensuring the normal height of the water level of the water tank, adjusting the water supply amount and the water demand of the water treatment equipment, ensuring the normal operation of the equipment and ensuring the safety and reliability of water supply.
Wherein, former water tank 2 and water purification case 17 all adopt stainless steel material to make for prevent that the box from corroding to rust and polluting quality of water, and former water tank 2 and water purification case 17 still install additional and detect drain pipe 23, are used for monitoring the quality of water condition in the box.
The utility model discloses a work flow:
tap water flows into a raw water tank 2 under the control of an electromagnetic valve 1, a water level controller is reasonably adjusted according to the display of a water level gauge to ensure the normal height of the water level and store a certain amount of water, the tap water is guided to a sand filter 5 and a carbon filter 6 under the action of a raw water pump 3 to pre-treat large particulate matters in the tap water, the tap water is guided to a nanofiltration host 8 through a high-pressure pump 7, then water molecules and dissolved impurities in the tap water are separated by utilizing the high separation performance of a nanofiltration membrane in the nanofiltration host 8 to remove toxic and harmful substances in the tap water and simultaneously retain trace elements and mineral matters in the tap water, the nanofiltration host 8 discharges the wastewater under the action of the electromagnetic valve 1 through a wastewater pipe, part of the wastewater is adjusted by an adjusting valve 9 and then flows back to the high-pressure pump 7 to be treated by the nanofiltration host 8 again, and the tap water is treated by the nanofiltration host 8 to obtain purified water, under the control of the regulating valve 9, the purified water is drained to the purified water tank 17 through the purified water pipe 13 for storage, and then passes through an air filter, bacteria in the air outside the filter tank, then bacteria and viruses in tap water are killed under the action of an ultraviolet sterilization device, then the purified water circularly flows between the purified water tank 17 and the circular sterilization water pipe 15 under the action of the circulating pump 21, meanwhile, the ozone machine 20 puts ozone into the circular sterilization water pipe 15 to sterilize the circularly flowing purified water, so that direct drinking water is obtained, the PID automatic control technology is reused, the frequency converter and the water supply pump 18 are combined, the frequency conversion constant-pressure water outlet is used for draining the direct drinking water to a user 19 for drinking, the direct drinking water is periodically returned to the purified water tank 17 through the electromagnetic valve 1 and the overflow ultraviolet lamp 22 on the water return pipe 16 and is circularly sterilized at the same time, and the sanitation and safety of the direct drinking water are ensured.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a water system is directly drunk to thing allies oneself with fusion pipeline which characterized in that: including supplying the return water pipe network, supply the return water pipe network including running water inlet tube, water purification pipe, straight drinking water delivery pipe and the wet return that connects gradually, the last former water tank, raw water pump, sand filter and carbon filter, high-pressure pump and the host computer of straining that has connected gradually of running water inlet tube, it passes through the water purification pipe and links to each other with the water purification case to strain the host computer, be equipped with ultraviolet sterilizing equipment in the water purification case, and external straight drinking water delivery pipe, connect converter, feed pump and the user water injection well choke that is equipped with in proper order on the straight drinking water delivery pipe, the wet return sets up straight drinking water delivery pipe terminal and with the water purification case links to each other, be equipped with a plurality of solenoid valves on supplying the return water pipe network, the solenoid valve is connected with electrical system.
2. A direct drinking water system according to claim 1, wherein: the carbon filter is an activated carbon filter.
3. A direct drinking water system according to claim 1, wherein: the nanofiltration membrane is arranged in the nanofiltration main machine.
4. A direct drinking water system according to claim 1, wherein: a turbidity meter and a conductivity sensor are arranged on a tap water inlet pipe between the carbon filter and the nanofiltration host, and a water quality sensor is arranged on a purified water pipe behind the nanofiltration host.
5. A direct drinking water system according to claim 1, wherein: the electromagnetic valve comprises a flushing electromagnetic valve, the nanofiltration main machine is connected with a concentrated water pipe, and the flushing electromagnetic valve is arranged on the concentrated water pipe.
6. A direct drinking water system according to claim 1, wherein: an air filter is externally connected with the water purifying tank.
7. A direct drinking water system according to claim 1, wherein: the ultraviolet sterilization device is an immersed ultraviolet sterilization device.
8. A direct drinking water system according to claim 1, wherein: the water purification tank is externally connected with an independent circulating disinfection water pipe, and the circulating disinfection water pipe is connected with a circulating pump and an ozone machine.
9. A direct drinking water system according to claim 1, wherein: the electromagnetic valve further comprises a water return electromagnetic valve, and the water return electromagnetic valve and the overflow ultraviolet lamp are sequentially arranged on the water return pipe.
10. A direct drinking water system according to claim 1, wherein: and the raw water tank and the purified water tank are both provided with a water level controller and a water level meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120456082.6U CN215049377U (en) | 2021-03-03 | 2021-03-03 | Thing allies oneself with fuses straight drinking water system of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120456082.6U CN215049377U (en) | 2021-03-03 | 2021-03-03 | Thing allies oneself with fuses straight drinking water system of pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215049377U true CN215049377U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120456082.6U Expired - Fee Related CN215049377U (en) | 2021-03-03 | 2021-03-03 | Thing allies oneself with fuses straight drinking water system of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215049377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635474A (en) * | 2022-04-07 | 2022-06-17 | 中冶东方工程技术有限公司 | Urban direct drinking water supply system |
-
2021
- 2021-03-03 CN CN202120456082.6U patent/CN215049377U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635474A (en) * | 2022-04-07 | 2022-06-17 | 中冶东方工程技术有限公司 | Urban direct drinking water supply system |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |