CN101544442A - Water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter - Google Patents
Water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter Download PDFInfo
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- CN101544442A CN101544442A CN200910022308A CN200910022308A CN101544442A CN 101544442 A CN101544442 A CN 101544442A CN 200910022308 A CN200910022308 A CN 200910022308A CN 200910022308 A CN200910022308 A CN 200910022308A CN 101544442 A CN101544442 A CN 101544442A
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Abstract
The invention relates to a water treatment method and a device. The water treatment method comprises a magnetic water and filtering water treating course and a return backwash course. The high-efficiency magnetic carbon ultrasonic return secondary filter is characterized in that an inlet flange (1) is connected with a cylinder body (12) which is internally provided with a cylindrical cavity, and the cylindrical cavity is partitioned into an inner region and an outer region by an electric butterfly valve (2); the outer region is a magnetization treatment region, and the inner region is an ultrasonic oscillatory wave high-frequency impact region; the joint between the inner side of the inlet flange (1) and the cylinder body (12) is provided with an electromagnet (13), so that the outer region of an inlet forms a strong magnetic field region which first magnetizes and adsorbs water to be treated; the inner region of the inlet is provided with a plurality of ultrasonic electrodes (11) which produce ultrasonic oscillatory wave to impact impurity in water and the whole pipe network with high frequency. The method and the device can improve the fine filtration degree of water quality, reduces the cost without chemical agent or changing or destroying the chemical property of water, is convenient for installation, and occupies small area.
Description
Technical field
The present invention relates to water treatment method and equipment, is a kind of water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter specifically.
Background technology
Existing water treatment method and equipment are to adopt the method for filtration and magnetized water to purify waste water, as the electronic descaling water treatment facilities as shown in Figure 1, it passes through in the centre of cylindrical shell installing electrodes, and the periphery of electrode is the space fully, water can not have the position of electrode to pass through from other, and the water yield of passing through through the electrode place is considerably less, and therefore, the effect of electrode does not reach fully; Simultaneously, be subjected to the restriction of Inlet and outlet water flange, again can not unconfined increase electrode, otherwise the available circulation area of the intravital reality of tube reduces, resistance strengthened when water passed through this equipment, whole pipe is caused disadvantageous effect, improved the lift of water pump, strengthened pipe wear, shorten the work-ing life of whole pipeline, equipment, caused the loss of the wasting of resources and power consumption.In addition, because the size of cylindrical shell has been subjected to the restriction of Inlet and outlet water flange, cylindrical shell can not be done greatly, therefore, intravital number of electrodes of tube and number are restricted, the electrode maximum can be launched the high frequency of 3MW, can not form powerful high frequency alternating electromagnetic field, and the purpose that the inhibition of descaling and antiscaling sterilization algae removal is derusted can not reach fully.
In the general water treatment procedure, treating water can cause solid particulate, mechanical impurity, sand, scale crust and various foreign matter to filter, cause inner-walls of duct to whole pipe network to clash into and collide, formed noise, pipeline has been caused damage, all kinds of valves, water pump and other equipment in the system have been caused influence, even made structure deteriorate, when pressure is high, can cause danger such as booster, blast.When solid particulate, mechanical impurity, sand, scale crust and various foreign matter are too many, need to have a power failure by stopping work, overhaul processing, can influence production efficiency, improve production cost.
Summary of the invention
The purpose of this invention is to provide a kind of water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter, it increase water quality smart filter fly degree, reduce cost, need not chemical agent, the chemical property that does not change and destroy water, simple installation, little, the unmanned of floor space.
The object of the present invention is achieved like this, designs a kind of water treatment method: it comprises magnetized water and filtered water treating processes and return-stroke type backwash process.
According to the high-efficiency magnetic carbon ultrasonic return secondary filter of the method for this water treatment design, it is characterized in that: suction flange is connected with cylindrical shell, and circular cylindrical cavity is arranged in the cylindrical shell, and circular cylindrical cavity is divided into inside and outside two districts by electric butterfly valve; Outskirt is the magnetization treatment zone, and inner region is a sonic oscillation wave height impact zone frequently; Suction flange is inboard to have electro-magnet with the cylindrical shell connection portion, makes the outskirt of ingress form a high-intensity magnetic field district; The high-intensity magnetic field district treats at first that treating water magnetizes, adsorption treatment; Inner region is that the sonic oscillation ripple that has a plurality of ultrasonic electrodes to send carries out high-frequency percussion to impurity in the water and whole pipe network.
Be built into by ceramic layer of sand and active carbon layer between circular cylindrical cavity and the barrel in the described cylindrical shell, internal layer is ceramic layer of sand, is active carbon layer between internal layer and the barrel; The ceramic sand laminar surface of high-intensity magnetic field outskirt and high-frequency percussion inner region has filtering net.
The filtering net port of described inner region is communicated with it by the reception room of pipe connection to the cylindrical shell lower end downwards, reception room is connected with electronic wash water valve and emergent sewage draining exit, port upwards communicates with the ceramic sand feeding port, ceramic sand feeding port one side has the active carbon filler mouth, and the treating water of high-intensity magnetic field district and high-frequency percussion inner region continues forward through ceramic layer of sand and the straight-through discharge flange of active carbon layer.
There is filtering net on active carbon layer surface between described discharge flange and the cylindrical shell, and filtering net and cylinder inboard wall form the space region of a non-filler, space region fixation pressure probe.
Described treating processes is: the pressure probe at discharge flange place detects mouth pressure and equals outskirt pressure, and electric butterfly valve is opened, and electronic wash water valve cuts out simultaneously; Handle the water that outskirt and high-frequency percussion inner region handle through magnetization and enter ceramic layer of sand, broken through the stranding of ceramic sand, pulverize, small-particle is absorbed by active carbon layer; And the solid macrobead directly be filtered the net tackle, enter reception room; The water that processed, smart filter finishes flows out by discharge flange.
Described backwash process is: the pressure probe at discharge flange place detects top hole pressure when being lower than outskirt pressure, electro-magnet at first cuts off the power supply, impurity on the electro-magnet all comes off, be flushed in the reception room by current, subsequently, electric butterfly valve cuts out with electronic wash water valve and opens, at this moment, backwash institute water loss 80% by the aqueous reflux of the cleaning at discharge flange place to cylindrical shell, backwash institute water loss 20% by the pending water following current at suction flange place to cylindrical shell, the two supports mutually and dashes, and forms whirlpool, and the impurity of charcoal absorption is flushed in the ceramic sand by filtering net, form the return-stroke type backwash process, all be flushed to then in the reception room, discharge through electronic wash water valve, afterwards, electric butterfly valve is opened, electronic wash water valve cuts out simultaneously, and backwash process finishes, and equipment reruns.
The present invention is with respect to prior art, because circular cylindrical cavity is arranged in cylindrical shell, circular cylindrical cavity is divided into inside and outside two districts by electric butterfly valve; Outskirt is the magnetization treatment zone, and inner region is that the sonic oscillation wave height is impacted inner region frequently.The outskirt of ingress forms a high-intensity magnetic field outskirt; The high-intensity magnetic field district treats at first that treating water magnetizes, adsorption treatment.Inner region is that the sonic oscillation ripple that has a plurality of ultrasonic electrodes to send carries out high-frequency percussion (vibration) to impurity in the water and whole pipe network.And communicate by the reception room of pipe connection to the cylindrical shell lower end downwards at the filtering net port of inner region, reception room is connected with electronic wash water valve and emergent sewage draining exit, between discharge flange and cylindrical shell, make active carbon layer and cylinder inboard wall form the space region of a non-filler by filtering net, pressure probe can detect space region, when finishing treating processes, after being flushed in the reception room by current, electric butterfly valve cuts out with electronic wash water valve and opens, at this moment, the aqueous reflux of the cleaning at discharge flange place is flushed to the impurity of charcoal absorption in the ceramic sand by filtering net to cylindrical shell, form the return-stroke type backwash, all be flushed to then in the reception room, discharge through electronic wash water valve, afterwards, electric butterfly valve is opened, electronic wash water valve cuts out simultaneously, and backwash process finishes, and equipment reruns.Whole process full automatic control, unmanned is realized the operation of moving back flushing and a whole set of program of automatic pollution discharge; Craft science of the present invention, easy access, process pipe is convenient to install, and applied widely, market outlook are wide, economic benefit height, and long service life, be more than 25 years general work-ing life.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the structural representation of existing electronic descaling water treatment facilities;
Fig. 2 is the structural representation of the embodiment of the invention.
Among the figure, 1, suction flange; 2, electric butterfly valve; 3, micro computer visual operation housing; 4, ceramic sand feeding port; 5, active carbon filler mouth; 6, pressure probe; 7, filtering net; 8, electronic wash water valve; 9, emergent sewage draining exit; 10, reception room; 11, electrode; 12, cylindrical shell; 13, electro-magnet; 14, ceramic layer of sand; 15, active carbon layer; 16, discharge flange; 17, housing.
Embodiment
Embodiment as shown in Figure 2, this high-efficiency magnetic carbon ultrasonic return secondary filter, suction flange 1 is connected with cylindrical shell 12, in the cylindrical shell 12 circular cylindrical cavity is arranged, circular cylindrical cavity is divided into inside and outside two districts by electric butterfly valve 2; There is electro-magnet 13 suction flange 1 inboard with cylindrical shell 12 connection portions, makes the outskirt of ingress form a high-intensity magnetic field district; Inner region has ultrasonic electrode 11, and the sonic oscillation ripple that ultrasonic electrode 11 sends carries out high-frequency percussion to impurity in the water and whole pipe network.Be made of ceramic layer of sand 14 and active carbon layer between circular cylindrical cavity and the barrel in the cylindrical shell 12, internal layer is ceramic layer of sand 14, is active carbon layer 15 between internal layer and the barrel; There is filtering net 7 on ceramic layer of sand 14 surfaces of high-intensity magnetic field outskirt and high-frequency percussion inner region.Filtering net 7 ports of inner region are communicated with it by the reception room 10 of pipe connection to cylindrical shell 12 lower ends downwards, reception room 10 is connected with electronic wash water valve 8 and emergent sewage draining exit 9, port upwards communicates with ceramic sand feeding port 4, ceramic sand feeding port 4 one sides have active carbon filler mouth 5, and the treating water of high-intensity magnetic field district and high-frequency percussion inner region continues forward through ceramic layer of sand and the straight-through discharge flange 16 of active carbon layer.There is filtering net 7 on active carbon layer 15 surfaces between discharge flange 16 and the cylindrical shell 12, and filtering net 7 and cylindrical shell 12 inwalls form the space region of a non-filler, space region fixation pressure probe 6.
Pending water enters in the cylindrical shell 12 by flange-interface 1 during use, and microscler cavity is arranged in the cylindrical shell 12, and microscler cavity is divided into inside and outside two districts by electric butterfly valve 2; Outskirt is the magnetization treatment zone, constitutes by the flange-interface 1 inboard electro-magnet partly 13 that is connected with cylindrical shell 12, makes the outskirt of ingress form a high-intensity magnetic field district; The high-intensity magnetic field district treats at first that treating water magnetizes, adsorption treatment.
When electric butterfly valve 2 was opened, the water of magnetization, adsorption treatment entered the high-frequency percussion inner region that ultrasonic wave constitutes, and the sonic oscillation ripple that a plurality of ultrasonic electrodes 11 of inner region send carries out high-frequency percussion (vibration) to impurity in the water and whole pipe network.
Be built into two-layerly in the cylindrical shell 12 between microscler cavitys and the barrel by ceramic layer of sand 14 and active carbon layer 15, internal layer is ceramic layer of sand 14, is active carbon layer 15 between internal layer and the barrel; By ceramic layer of sand 14 surface with circular cylindrical cavity relative separate of filtering net 7 with high-intensity magnetic field district and high-frequency percussion inner region.Filtering net 7 ports through inner region are communicated by the reception room 10 of pipe connection to cylindrical shell 12 lower ends downwards, reception room 10 is connected with electronic wash water valve 8 and emergent sewage draining exit 9, port upwards communicates with ceramic sand feeding port 4, ceramic sand feeding port 4 one sides have active carbon filler mouth 5, and the treating water of high-intensity magnetic field district and high-frequency percussion inner region continues forward through ceramic layer of sand 14 and active carbon layer 15 straight-through discharge flanges 16.Make active carbon layer 15 and cylindrical shell 12 inwalls form the space region of a non-filler by filtering net 7 between discharge flange 16 and cylindrical shell 12, pressure probe 6 can detect the pressure of space region.Initial operating stage is water treatment procedure just, and the pressure probe 6 at discharge flange 16 places detects top hole pressure and equals outskirt pressure, and electric butterfly valve 2 is opened, and electronic wash water valve 8 cuts out simultaneously; The water of handling through magnetization treatment zone and high-frequency percussion inner region enters ceramic layer of sand 14, and is broken through the stranding of ceramic sand, pulverize, and got off by charcoal absorption; The solid macrobead directly is filtered net 7 and tackles, and enters reception room 10; The water that processed, smart filter finishes flows out by discharge flange 16.Enter the return-stroke type backwash process after operation for some time, the pressure probe 6 at discharge flange 16 places detects top hole pressure when being lower than outskirt pressure, electro-magnet 13 at first cuts off the power supply, impurity on the electro-magnet 13 all comes off, be flushed in the reception room 10 by current, afterwards, electric butterfly valve 2 cuts out with electronic wash water valve 8 and opens, at this moment, backwash institute water loss 80% by the aqueous reflux of the cleaning at discharge flange 16 places to cylindrical shell 12, backwash institute water loss 20% by the pending water following current at suction flange 1 place to cylindrical shell 12, the two supports mutually and dashes, form whirlpool, the impurity of gac 15 absorption is flushed in the ceramic sand 14 by filtering net 7, forms the backwash of intensive return-stroke type, all be flushed in the reception room 10 then, discharge through electronic wash water valve 8, afterwards, electric butterfly valve 2 is opened, and electronic wash water valve 8 cuts out simultaneously, backwash process finishes, and equipment reruns.
High-efficiency magnetic carbon ultrasonic return secondary filter adopts circle shell-type structure, compact construction is attractive in appearance, volume is little, and weighting material is with low cost, saves land area and building height, micro computer visual operation housing adopts the engineering explosion-proof structure, have waterproof, explosion-proof characteristics, can be suitable for outdoor, mine and install, reduce investment outlay, be convenient to design arrangement, operation simultaneously is convenient, reliable.Adopt Low Alloy Steel Plate and non-ferrous alloy to make the limited corrosion that prevented.The bearing capacity height is pressed droop loss little, and backwash institute water loss is few, and (be about 1 ‰ of equipment throughput, for example: equipment is by being 100m
3/ h, the backwash water loss is 100L), performance such as heat resistance is good, and manufacture craft is good, and cost is lower, and the maintenance management operation is easy reaches more than 25 years work-ing life, effectively prevented some disadvantages of other strainers, secondary filter, electric water treatment device.Embodiments of the invention are not limited only to this, above embodiment is a kind of performance price rational in infrastructure than high example, some equipment simple in structure realize magnetized water and filtered water treating processes and backwash process but effect does not have this equipment good, for example: pressure probe 6 can be removed, change the low time control of cost into, also ceramic sand 14 can be changed into the lower quartz sand of cost, also electro-magnet 13 can be changed into the lower permanent magnet of cost, also gac 15 can be replaced with the graphite that has adsorption function equally; Also available structures more complex apparatus realize magnetized water and filtered water treating processes and backwash process but the cost height, for example: pressure probe 6 can be replaced with the higher pressure transmitter of cost, also gac 15 can be replaced with the material that has adsorption function equally.
For the processing power of raising equipment to water quality, the magneticstrength of high-intensity magnetic field outskirt is between 4000-10000 Gausses, diamagnetic substance in the impurity such as lime carbonate, yellow soda ash, magnesiumcarbonate, calcium hydroxide and paraffin etc. are usually electrical to have, inert particle, molecule, molecular grouping form exist, when trash flow through the high-intensity magnetic field outskirt, changed the physical structure of impurity by the action of a magnetic field, with hydromagneticization.And the sonic oscillation wave height is impacted the wave of oscillation of inner region frequently it is gone by the water (flow) direction spread out, its speed is higher than the flow velocity of water itself far away, even in the pipeline seldom the mobile dead angle also carry to be gone up a this wave of oscillation, under the effect of the wave of oscillation, the activity of water is greatly strengthened, big water clusters becomes little molecular grouping even one water molecules, dissolve and comprise the ability enhancing of dirt, established rust/dirt is divided and disintegrated, make the position that deposits, forms dirt in each corner in the whole pipe, obtain vibration, it is come off.And some impurity in the water can not be adsorbed by magnetic field magnetisation, insoluble impurity---compound and other impurity that is insoluble in water of silicon and silicon that can not be removed by the sonic oscillation ripple are handled by ceramic layer of sand and the active carbon layer between microscler cavitys and the barrel in the cylindrical shell 12.The pottery layer of sand will be insoluble in the impurity of water and rub with the hands broken, gac adsorbs then, this reason similarly is the mill disc that we are easy to see in the rural area, mill disc can grind into Semen Maydis powder to corn grain when promoting, flowing of water just brought promotion, ground the power of exhibition to ceramic sand in the equipment, make to squeeze mutually between each ceramic sand and rub with the hands, insoluble impurity rub with the hands broken, pulverize, when impurity broken by rubbing with the hands when these, that pulverize is flushed to activated carbon filter layer by current, got off by charcoal absorption.Simultaneously; high high-intensity magnetic field, the high frequency ultrasound wave of oscillation act on the pipeline of new installation and can not tie hard scale, get rusty or long bacterium algae; old ducted original corrosion, old dirt etc. also progressively soften, dissolve, eliminate, and finally form protective oxide layer at inner-walls of duct, and corrosion no longer appears in inner-walls of duct.Three treating processess, three links, the equipment that makes is enhanced to the limit to the processing power of water quality, and none is slipped through the net to make impurity, all is filtered to absorb.
Claims (7)
1, a kind of water treatment method: it comprises magnetized water and filtered water treating processes and return-stroke type backwash process.
2, according to the high-efficiency magnetic carbon ultrasonic return secondary filter of the method for this water treatment design, it is characterized in that: suction flange (1) is connected with cylindrical shell (12), and cylindrical shell has circular cylindrical cavity in (12), and circular cylindrical cavity is divided into inside and outside two districts by electric butterfly valve (2); Outskirt is the magnetization treatment zone, and inner region is a sonic oscillation wave height impact zone frequently; Suction flange (1) is inboard to have electro-magnet (13) with cylindrical shell (12) connection portion, makes the outskirt of ingress form a high-intensity magnetic field district; The high-intensity magnetic field district treats at first that treating water magnetizes, adsorption treatment; Inner region carries out high-frequency percussion for the sonic oscillation ripple that has a plurality of ultrasonic electrodes (11) to send to impurity in the water and whole pipe network.
3, high-efficiency magnetic carbon ultrasonic return secondary filter according to claim 2, it is characterized in that: be built into by ceramic layer of sand and active carbon layer between interior circular cylindrical cavity of described cylindrical shell (12) and the barrel, internal layer is ceramic layer of sand (14), is active carbon layer (15) between internal layer and the barrel; There is filtering net (7) on ceramic layer of sand (14) surface of high-intensity magnetic field outskirt and high-frequency percussion inner region.
4, high-efficiency magnetic carbon ultrasonic return secondary filter according to claim 2, it is characterized in that: the filtering net of described inner region (7) port is communicated with it by the reception room (10) of pipe connection to cylindrical shell (12) lower end downwards, reception room (10) is connected with electronic wash water valve (8) and emergent sewage draining exit (9), port upwards communicates with ceramic sand feeding port (4), ceramic sand feeding port (4) one sides have active carbon filler mouth (5), and the treating water of high-intensity magnetic field district and high-frequency percussion inner region continues forward through ceramic layer of sand and the straight-through discharge flange (16) of active carbon layer.
5, high-efficiency magnetic carbon ultrasonic return secondary filter according to claim 2, it is characterized in that: there is filtering net (7) on active carbon layer (15) surface between described discharge flange (16) and the cylindrical shell (12), filtering net (7) and cylindrical shell (12) inwall form the space region of a non-filler, space region fixation pressure probe (6).
6, water treatment method according to claim 1: described treating processes is; The pressure probe (6) that mouth flange (16) is located detects mouth pressure and equals outskirt pressure, and electric butterfly valve (2) is opened, and electronic wash water valve (8) cuts out simultaneously; Handle the water that outskirt and high-frequency percussion inner region handle through magnetization and enter ceramic layer of sand (14), broken through the stranding of ceramic sand, pulverize, small-particle is absorbed by active carbon layer (15); Tackle and the solid macrobead directly is filtered net (7), enter reception room (10); The water that processed, smart filter finishes flows out by discharge flange (16).
7, water treatment method according to claim 1: described return-stroke type backwash process is; The pressure probe (6) that mouthful flange (16) is located detects top hole pressure when being lower than outskirt pressure, electro-magnet (13) at first cuts off the power supply, impurity on the electro-magnet (13) all comes off, be flushed in the reception room (10) by current, subsequently, electric butterfly valve (2) cuts out with electronic wash water valve (8) and opens, at this moment, the aqueous reflux of 80% cleaning of being located by discharge flange (16) of backwash institute water loss is to cylindrical shell (12), the 20% pending water following current of being located by suction flange (1) of backwash institute water loss is to cylindrical shell (12), the two supports mutually and dashes, and forms whirlpool, and the impurity that gac (15) is adsorbed is flushed in the ceramic sand (14) by filtering net (7), form the return-stroke type backwash process, all be flushed to then in the reception room (10), discharge through electronic wash water valve (8), afterwards, electric butterfly valve (2) is opened, electronic wash water valve (8) cuts out simultaneously, and the return-stroke type backwash process finishes, and equipment reruns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100223085A CN101544442B (en) | 2009-04-30 | 2009-04-30 | Water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100223085A CN101544442B (en) | 2009-04-30 | 2009-04-30 | Water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter |
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| Publication Number | Publication Date |
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| CN101544442A true CN101544442A (en) | 2009-09-30 |
| CN101544442B CN101544442B (en) | 2011-12-07 |
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| CN2009100223085A Expired - Fee Related CN101544442B (en) | 2009-04-30 | 2009-04-30 | Water treatment method and high-efficiency magnetic carbon ultrasonic return secondary filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436745A (en) * | 2013-09-18 | 2015-03-25 | 福建金源泉科技发展有限公司 | Herb extraction skin beautifying and moisturizing water apparatus and preparation method for filtration core of herb extraction skin beautifying and moisturizing water apparatus |
| CN115259533A (en) * | 2022-08-09 | 2022-11-01 | 北京图南医疗设备有限公司 | Intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050037U (en) * | 1989-03-29 | 1989-12-27 | 陈锡连 | Fast-speed magnetization mineral water-making device |
| CN2454013Y (en) * | 2000-11-08 | 2001-10-17 | 四川冶金环能工程有限责任公司 | Permanent magnetic high-gradient filter |
| CN2457122Y (en) * | 2000-11-29 | 2001-10-31 | 林进源 | Improved device for pure water treatment system |
| US7258781B2 (en) * | 2002-09-09 | 2007-08-21 | Clarity Filters Llc | Single-use long-life faucet-mounted water filtration devices |
-
2009
- 2009-04-30 CN CN2009100223085A patent/CN101544442B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436745A (en) * | 2013-09-18 | 2015-03-25 | 福建金源泉科技发展有限公司 | Herb extraction skin beautifying and moisturizing water apparatus and preparation method for filtration core of herb extraction skin beautifying and moisturizing water apparatus |
| CN104436745B (en) * | 2013-09-18 | 2016-06-01 | 福建金源泉科技发展有限公司 | Draft extracts the preparation method of beautiful skin moistening water device and filter core thereof |
| CN115259533A (en) * | 2022-08-09 | 2022-11-01 | 北京图南医疗设备有限公司 | Intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment |
| CN115259533B (en) * | 2022-08-09 | 2024-01-26 | 北京图南医疗设备有限公司 | Intelligent dynamic water-saving two-stage reverse osmosis water treatment equipment |
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