CN202046957U - Full-automatic high-purity water producing system - Google Patents
Full-automatic high-purity water producing system Download PDFInfo
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- CN202046957U CN202046957U CN2011201700281U CN201120170028U CN202046957U CN 202046957 U CN202046957 U CN 202046957U CN 2011201700281 U CN2011201700281 U CN 2011201700281U CN 201120170028 U CN201120170028 U CN 201120170028U CN 202046957 U CN202046957 U CN 202046957U
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Abstract
The utility model relates to the technical field of water treatment equipment, in particular to a full-automatic high-purity water producing system. The full-automatic high-purity water producing system comprises a raw water tank, a raw water pump, a filter device, a high-pressure pump, a reverse osmosis device, a pure water tank, a pure water pump, an ion exchange mixing bed and a sterilizing device, wherein the filter device comprises a sand filter, a carbon filter and a softener; and a first electromagnetic water valve is arranged at the water inlet side of the raw water tank. In the utility model, a PLC (Programmable Logic Controller) control system is adopted to coordinate and control the operation of the first electromagnetic water valve, the raw water pump, the high-pressure pump and the pure water pump, and the sand filter, the carbon filter, the softener, the reverse osmosis device, the ion exchange mixing bed and the sterilizing device are adopted to ensure treated water reaches the standard of high-purity water, so that the full-automatic high-purity water producing system can be used for realizing the automatic production of high-purity water and can effectively prevent high-purity water quality from bad effects caused by the traditional manual control means so as to guarantee the final water quality.
Description
Technical field
The utility model relates to the water treating equipment technical field, relates in particular to a kind of full-automatic high purity water production system.
Background technology
High purity water is meant almost all to be removed the conducting medium in the water, again Undec colloidalmaterial, gas and organism in the water is all handled to the water of low degree very, and wherein, the saltiness of high purity water is below 0. 3mg/L, and specific conductivity is less than 0. 2 μ s/cm.For reaching above-mentioned quality standard, high purity water preparation technology and treating processes all require very strict, and treating processes has mistake will make water quality not up to standard slightly.
Along with high purity water preparation technology is constantly ripe, the high purity water production system also constantly is modified; Yet, existing high purity water production system generally adopts mechanical manual control mode to carry out the high purity water preparation, and the control mode of this manual type can produce detrimentally affect and the final water quality that influences the high purity water of being produced to the stability and the accuracy of system unavoidably.
Therefore, influence the water quality of high purity water, be necessary to provide a kind of high purity water production system of automatic production for avoiding manual control mode.
Summary of the invention
The purpose of this utility model is to provide a kind of full-automatic high purity water production system at the deficiencies in the prior art, this full-automatic high purity water production system can realize the high purity water automatic production, has avoided the detrimentally affect to the water quality of high purity water of traditional manual control mode effectively.
For achieving the above object, the utility model is achieved through the following technical solutions.
A kind of full-automatic high purity water production system includes the raw water box, raw water pump, filtration unit, high-pressure pump, reverse osmosis unit, pure water case, pure water pump, ion exchangemixed bed and the sterilizing unit that connect successively by pipeline; Filtration unit includes sand-bed filter, carbon filter and the softening agent that connects successively by pipeline, and the water-in of sand-bed filter is connected with the water outlet of raw water pump by pipeline, and the water outlet of softening agent is connected with the water-in of high-pressure pump by pipeline; The water inlet oral-lateral of raw water box is equiped with the first electromagnetism water valve that water-in is connected with Automatic Water System, and the water outlet of the first electromagnetism water valve is connected with the water-in of raw water box by pipeline; Also include the PLC Controlling System, the PLC Controlling System is electrically connected with the first electromagnetism water valve, raw water pump, high-pressure pump, pure water pump respectively.
Wherein, described high-pressure pump is fitted with pressure-regulator, and a coupling end of pressure-regulator is connected with the water-in of high-pressure pump, and another coupling end of pressure-regulator is connected with the water outlet of high-pressure pump; The water inlet oral-lateral of high-pressure pump is equiped with the second electromagnetism water valve, and described softening agent, the second electromagnetism water valve and high-pressure pump connect successively by pipeline, and the second electromagnetism water valve is electrically connected with described PLC Controlling System.
Wherein, the water outlet oral-lateral of described softening agent is equiped with the chemicals dosing plant that is used to add scale remover, the metering dosing pump that chemicals dosing plant includes the liquid medicine bucket and is used to pump scale remover, the water outlet of metering dosing pump is by the pipe connection of pipeline with the water outlet that is connected described softening agent, and the metering dosing pump is electrically connected with described PLC Controlling System.
Wherein, this full-automatic high purity water production system also includes fine filtering apparatus, fine filtering apparatus includes first secondary filter and second secondary filter, first secondary filter is installed between described softening agent and the described second electromagnetism water valve, the water-in of first secondary filter is connected with the water outlet of softening agent and described metering dosing pump respectively by pipeline, and the water outlet of first secondary filter is connected by the water-in of pipeline with the second electromagnetism water valve; Second secondary filter is installed between described ion exchangemixed bed and the described sterilizing unit, and the water-in of second secondary filter is connected with the water outlet of ion exchangemixed bed by pipeline, and the water outlet of second secondary filter is connected with the water-in of sterilizing unit by pipeline.
Wherein, this full-automatic high purity water production system also includes pressure protective device; pressure protective device includes the first high voltage protective device; the second high voltage protective device and low-voltage variation device; the first high voltage protective device is installed in the pipeline that connects described sand-bed filter and described raw water pump; the second high voltage protective device is installed in the pipeline that connects described pure water pump and described ion exchangemixed bed; the low-voltage variation device is installed in the pipeline that connects described first secondary filter and the described second electromagnetism water valve, the first high voltage protective device; the second high voltage protective device and low-voltage variation device are electrically connected with described PLC Controlling System respectively.
Wherein, described sterilizing unit is a ultraviolet sterilizer.
The beneficial effects of the utility model are: a kind of full-automatic high purity water production system described in the utility model includes raw water box, raw water pump, filtration unit, high-pressure pump, reverse osmosis unit, pure water case, pure water pump, ion exchangemixed bed and the sterilizing unit that connects successively by pipeline; Filtration unit includes sand-bed filter, carbon filter and the softening agent that connects successively by pipeline; The water inlet oral-lateral of raw water box is equiped with the first electromagnetism water valve that water-in is connected with Automatic Water System; The first electromagnetism water valve, raw water pump, high-pressure pump and pure water pump action are coordinated and controlled to the utility model by the PLC Controlling System; Simultaneously, the utility model also makes treated water reach the high purity water standard by sand-bed filter, carbon filter, softening agent, reverse osmosis unit, ion exchangemixed bed and sterilizing unit; Therefore, the utility model can be realized the high purity water automatic production and can avoid the detrimentally affect to the water quality of high purity water of traditional manual control mode effectively, and then guarantee final water quality.
Description of drawings
Utilize accompanying drawing to come the utility model is further described below, but the embodiment in the accompanying drawing does not constitute any restriction of the present utility model.
Fig. 1 is a structural representation of the present utility model.
In Fig. 1, include:
10---raw water box 11---raw water pump 12---the first electromagnetism water valves
20---filtration unit 21---sand-bed filter 22---carbon filters
23---softening agent 30---high-pressure pump 31---pressure-regulators
32---the second electromagnetism water valve 40---reverse osmosis unit 50---pure water casees
51---pure water pump 60---ion exchangemixed bed 70---sterilizing units
80---chemicals dosing plant 81---liquid medicine bucket 82---metering dosing pumps
91---first secondary filters 92---, second secondary filter
100---first high voltage protective devices 101---, the second high voltage protective device
102---the low-voltage variation device.
Embodiment
Come the utility model is further detailed below in conjunction with embodiment.
Embodiment one
As shown in Figure 1, the full-automatic high purity water production system of present embodiment one includes raw water box 10, raw water pump 11, filtration unit 20, high-pressure pump 30, reverse osmosis unit 40, pure water case 50, pure water pump 51, ion exchangemixed bed 60 and the sterilizing unit 70 that connects successively by pipeline; Filtration unit 20 includes sand-bed filter 21, carbon filter 22 and the softening agent 23 that connects successively by pipeline, the water-in of sand-bed filter 21 is connected by the water outlet of pipeline with raw water pump 11, and the water outlet of softening agent 23 is connected by the water-in of pipeline with high-pressure pump 30; The water outlet that the water inlet oral-lateral of raw water box 10 is equiped with the first electromagnetism water valve, 12, the first electromagnetism water valves 12 that water-in is connected with Automatic Water System is connected by the water-in of pipeline with raw water box 10; Also include the PLC Controlling System, the PLC Controlling System is electrically connected with the first electromagnetism water valve 12, raw water pump 11, high-pressure pump 30, pure water pump 51 respectively.
Wherein, the inside of sand-bed filter 21 is loaded with quartz sand, and sand-bed filter 21 can be removed large granular impurity in the water and organism etc. effectively by its inner quartz sand; The inside of carbon filter 22 is loaded with gac, and carbon filter 22 can be removed peculiar smell in the water, remaining chlorine and granulometric impurity etc. effectively by the adsorptive power of utilizing gac; The inside of softening agent 23 is equipped with sodium type cationic exchange coloum resin layer, and softening agent 23 can be removed calcium, the magnesium ion in the water effectively and make hard water become soft water by sodium type cationic exchange coloum resin layer; The inside of reverse osmosis unit 40 is equipped with reverse osmosis membrane, and reverse osmosis unit 40 can divide the bigger organism of all solutes in dried up and molecular weight effectively by reverse osmosis membrane and make water purifying further after softening agent 23 is handled; The inside of ion exchangemixed bed 60 is filled with blended yin and yang resin according to a certain percentage, and ion exchangemixed bed 60 can generate the very low water of solubleness effectively and prepare high purity water; Sterilizing unit 70 is mainly used in carrying out last germicidal treatment by the prepared high purity water of the full-automatic high purity water production system of present embodiment one, and wherein, this sterilizing unit 70 is a ultraviolet sterilizer.In addition, the Automatic Water System in the present embodiment one is anastomosing running water pipe or water tower, and the water that present embodiment one is utilized can be tap water, also can be well water.
In the course of the work, the first electromagnetism water valve 12, raw water pump 11, high-pressure pump 30 and pure water pump 51 actions are coordinated and controlled to present embodiment one by the PLC Controlling System, its concrete control process is as follows: when the water in the raw water box 10 was not enough, the PLC Controlling System drove 12 unlatchings of the first electromagnetism water valve and passes through interpolation water in the automatically past raw water box 10 of Automatic Water System; When the water in the raw water box 10 was enough, the PLC Controlling System drove the first electromagnetism water valve 12 and closes and block the Automatic Water System continuation toward the raw water box 10 interior water that add; When the water in the pure water case 50 was not enough, the PLC Controlling System drove raw water pump 11, high-pressure pump 30 is opened in the lump and add water in pure water case 50; When the water in the pure water case 50 was enough, the PLC Controlling System drove raw water pump 11, high-pressure pump 30 is closed.In addition, must point out further that raw water pump 11 and high-pressure pump 30 only have in raw water box 10 under the situation of water and can start, pure water pump 51 only has in pure water case 50 under the situation of water and can start.
In present embodiment one working process, well water or tap water under the driving effect of raw water pump 11, high-pressure pump 30 and pure water pump 51 successively by sand-bed filter 21, carbon filter 22, softening agent 23, reverse osmosis unit 40, ion exchangemixed bed 60 and sterilizing unit 70 and finish purge process; Therefore, the full-automatic high purity water production system of present embodiment one can realize the high purity water automatic production and can avoid the detrimentally affect to the water quality of high purity water of traditional manual control mode effectively, and then guarantee final water quality.
Further, high-pressure pump 30 is fitted with pressure-regulator 31, and a coupling end of pressure-regulator 31 is connected with the water-in of high-pressure pump 30, and another coupling end of pressure-regulator 31 is connected with the water outlet of high-pressure pump 30; The water inlet oral-lateral of high-pressure pump 30 is equiped with the second electromagnetism water valve 32, and softening agent 23, the second electromagnetism water valve 32 and high-pressure pump 30 connect successively by pipeline, and the second electromagnetism water valve 32 is electrically connected (as shown in Figure 1) with the PLC Controlling System.The pressure difference that present embodiment one is regulated high-pressure pump 30 water-ins and water outlet by pressure-regulator 31, and then realization is regulated the seepage water pressure of the inside of reverse osmosis unit 40 and make reverse osmosis unit 40 can reach purification effect preferably.Control in the process of the second electromagnetism water valve 32 and high-pressure pump 30 actions in the PLC Controlling System, the second electromagnetism water valve 32 and high-pressure pump 30 consistent actions, promptly the second electromagnetism water valve 32 closes with opening together with high-pressure pump 30; The purpose that present embodiment one is set up the second electromagnetism water valve 32 is: when high-pressure pump 30 was closed, the full-automatic high purity water production system of present embodiment one can avoid the ducted hydraulic pressure of leading portion that reverse osmosis unit 40 is exerted an influence by the mode of closing the second electromagnetism water valve 32.
Further, the water outlet oral-lateral of softening agent 23 is equiped with the chemicals dosing plant 80 that is used to add scale remover, the metering dosing pump 82 that chemicals dosing plant 80 includes liquid medicine bucket 81 and is used to pump scale remover, the water outlet of metering dosing pump 82 is by the pipe connection of pipeline with the water outlet that is connected softening agent 23, and metering dosing pump 82 is electrically connected with described PLC Controlling System.The metering dosing pump 82 of present embodiment one can be adjusted the amount that is added to ducted scale remover according to the actual needs, the effect of scale remover is: remove inner incrustation scale such as follow-up pipeline, high-pressure pump 30, reverse osmosis unit 40, and then make follow-up pipeline, high-pressure pump 30, reverse osmosis unit 40 etc. can keep working order preferably.Wherein, metering dosing pump 82 and high-pressure pump 30 consistent actions promptly measure dosing pump 82 and close with opening together with high-pressure pump 30.
As preferred embodiment, the full-automatic high purity water production system of present embodiment one also includes fine filtering apparatus, fine filtering apparatus includes first secondary filter 91 and second secondary filter 92, first secondary filter 91 is installed between the softening agent 23 and the second electromagnetism water valve 32, the water-in of first secondary filter 91 is connected with the water outlet of softening agent 23 and metering dosing pump 82 respectively by pipeline, and the water outlet of first secondary filter 91 is connected by the water-in of pipeline with the second electromagnetism water valve 32; Second secondary filter 92 is installed between ion exchangemixed bed 60 and the sterilizing unit 70, the water-in of second secondary filter 92 is connected by the water outlet of pipeline with ion exchangemixed bed 60, and the water outlet of second secondary filter 92 is connected by the water-in of pipeline with sterilizing unit 70.Present embodiment one is set up first secondary filter 91 and set up second secondary filter 92 between ion exchangemixed bed 60 and sterilizing unit 70 between the softening agent 23 and the second electromagnetism water valve 32, its purpose is: the water after handling via softening agent 23 by 91 pairs of first secondary filters carries out secondary filter, and the water after handling via ion exchangemixed bed 60 by 92 pairs of second secondary filters closely filters.Wherein, first secondary filter 91 and second secondary filter 92 that are adopted of present embodiment one can be millipore filter.
Embodiment two
As shown in Figure 1; present embodiment two is with the difference of embodiment one: the full-automatic high purity water production system of present embodiment two includes pressure protective device; pressure protective device includes the first high voltage protective device 100; the second high voltage protective device 101 and low-voltage variation device 102; the first high voltage protective device 100 is installed in the pipeline that connects sand-bed filter 21 and raw water pump 11; the second high voltage protective device 101 is installed in the pipeline that connects pure water pump 51 and ion exchangemixed bed 60; low-voltage variation device 102 is installed in the pipeline that connects first secondary filter 91 and the second electromagnetism water valve 32, the first high voltage protective device 100; the second high voltage protective device 101 and low-voltage variation device 102 are electrically connected with the PLC Controlling System respectively.
The full-automatic high purity water production system of this enforcement two comes corresponding parts are carried out pressure protect by pressure protective device, be specially: for the first high voltage protective device 100, when the hydraulic pressure value of the water outlet of raw water pump 11 is higher than the specified force value of the first high voltage protective device 100, the first high voltage protective device 100 feeds back to the PLC Controlling System with high-voltage signal, the PLC Controlling System is receiving high-voltage signal rear drive raw water pump 11, the second electromagnetism water valve 32 and high-pressure pump 30 are out of service, in addition, only be lower than under the situation of the specified force value of the first high voltage protective device 100 at the hydraulic pressure value of the water outlet of raw water pump 11, raw water pump 11, the second electromagnetism water valve 32 and high-pressure pump 30 can be unlocked, therefore, the first high voltage protective device 100 can play the high voltage protective effect to raw water pump 11; For the second high voltage protective device 101, when the hydraulic pressure value of the water outlet of pure water pump 51 is higher than the specified force value of the second high voltage protective device 101, the second high voltage protective device 101 feeds back to the PLC Controlling System with high-voltage signal, the PLC Controlling System is out of service in reception high-voltage signal rear drive pure water pump 51, in addition, pure water pump 51 only can be activated when the water outlet force value is lower than the specified force value of the second high voltage protective device 101, therefore, the second high voltage protective device 101 can play the high voltage protective effect to pure water pump 51; For low-voltage variation device 102; when the hydraulic pressure value of the water outlet of first secondary filter 91 is lower than the specified force value of low-voltage variation device 102; low-voltage variation device 102 feeds back to the PLC Controlling System with low-voltage signal; the PLC Controlling System is out of service at reception low-voltage signal rear drive second electromagnetism water valve 32 and high-pressure pump 30; in addition; the second electromagnetism water valve 32 and high-pressure pump 30 only can be activated when the hydraulic pressure value of the water outlet of first secondary filter 91 is higher than the specified force value of low-voltage variation device 102; therefore, low-voltage variation device 102 can carry out low-voltage variation to the second electromagnetism water valve 32 and high-pressure pump 30.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (6)
1. a full-automatic high purity water production system is characterized in that: include the raw water box (10), raw water pump (11), filtration unit (20), high-pressure pump (30), reverse osmosis unit (40), pure water case (50), pure water pump (51), ion exchangemixed bed (60) and the sterilizing unit (70) that connect successively by pipeline; Filtration unit (20) includes sand-bed filter (21), carbon filter (22) and the softening agent (23) that connects successively by pipeline, the water-in of sand-bed filter (21) is connected by the water outlet of pipeline with raw water pump (11), and the water outlet of softening agent (23) is connected by the water-in of pipeline with high-pressure pump (30); The water inlet oral-lateral of raw water box (10) is equiped with the first electromagnetism water valve (12) that water-in is connected with Automatic Water System, and the water outlet of the first electromagnetism water valve (12) is connected by the water-in of pipeline with raw water box (10); Also include the PLC Controlling System, the PLC Controlling System is electrically connected with the first electromagnetism water valve (12), raw water pump (11), high-pressure pump (30), pure water pump (51) respectively.
2. a kind of full-automatic high purity water production system according to claim 1, it is characterized in that: described high-pressure pump (30) is fitted with pressure-regulator (31), one coupling end of pressure-regulator (31) is connected with the water-in of high-pressure pump (30), and another coupling end of pressure-regulator (31) is connected with the water outlet of high-pressure pump (30); The water inlet oral-lateral of high-pressure pump (30) is equiped with the second electromagnetism water valve (32), and described softening agent (23), the second electromagnetism water valve (32) and high-pressure pump (30) connect successively by pipeline, and the second electromagnetism water valve (32) is electrically connected with described PLC Controlling System.
3. a kind of full-automatic high purity water production system according to claim 2, it is characterized in that: the water outlet oral-lateral of described softening agent (23) is equiped with the chemicals dosing plant (80) that is used to add scale remover, the metering dosing pump (82) that chemicals dosing plant (80) includes liquid medicine bucket (81) and is used to pump scale remover, the water outlet of metering dosing pump (82) is by the pipe connection of pipeline with the water outlet that is connected described softening agent (23), and metering dosing pump (82) is electrically connected with described PLC Controlling System.
4. a kind of full-automatic high purity water production system according to claim 3, it is characterized in that: also include fine filtering apparatus, fine filtering apparatus includes first secondary filter (91) and second secondary filter (92), first secondary filter (91) is installed between described softening agent (23) and the described second electromagnetism water valve (32), the water-in of first secondary filter (91) is connected with the water outlet of softening agent (23) and described metering dosing pump (82) respectively by pipeline, and the water outlet of first secondary filter (91) is connected by the water-in of pipeline with the second electromagnetism water valve (32); Second secondary filter (92) is installed between described ion exchangemixed bed (60) and the described sterilizing unit (70), the water-in of second secondary filter (92) is connected by the water outlet of pipeline with ion exchangemixed bed (60), and the water outlet of second secondary filter (92) is connected by the water-in of pipeline with sterilizing unit (70).
5. a kind of full-automatic high purity water production system according to claim 4; it is characterized in that: also include pressure protective device; pressure protective device includes the first high voltage protective device (100); the second high voltage protective device (101) and low-voltage variation device (102); the first high voltage protective device (100) is installed in the pipeline that connects described sand-bed filter (21) and described raw water pump (11); the second high voltage protective device (101) is installed in the pipeline that connects described pure water pump (51) and described ion exchangemixed bed (60); low-voltage variation device (102) is installed in the pipeline that connects described first secondary filter (91) and the described second electromagnetism water valve (32), the first high voltage protective device (100); the second high voltage protective device (101) and low-voltage variation device (102) are electrically connected with described PLC Controlling System respectively.
6. according to any described a kind of full-automatic high purity water production system of claim 1 to 5, it is characterized in that: described sterilizing unit (70) is a ultraviolet sterilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201700281U CN202046957U (en) | 2011-05-25 | 2011-05-25 | Full-automatic high-purity water producing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201700281U CN202046957U (en) | 2011-05-25 | 2011-05-25 | Full-automatic high-purity water producing system |
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| CN202046957U true CN202046957U (en) | 2011-11-23 |
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| CN2011201700281U Expired - Fee Related CN202046957U (en) | 2011-05-25 | 2011-05-25 | Full-automatic high-purity water producing system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684454A (en) * | 2012-04-27 | 2012-09-19 | 广州高澜节能技术股份有限公司 | Composite external cooling system for DC power transmission converter valve |
| CN103601324A (en) * | 2013-10-21 | 2014-02-26 | 安徽省华森电源有限公司 | Full-automatic preparation device of high-purity water used for lead-acid cells |
| CN103880217A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Drained water recycling model for soft water preparation system and recycling method |
| CN104310630A (en) * | 2014-09-29 | 2015-01-28 | 滁州友林科技发展有限公司 | Oilfield produced water purification system and control method thereof |
| CN105233694A (en) * | 2015-11-11 | 2016-01-13 | 珠海格力电器股份有限公司 | Water treatment system |
| CN106396208A (en) * | 2016-11-21 | 2017-02-15 | 浙江水利水电学院 | Pure water preparation process for clinical laboratory of hospital |
| CN107879513A (en) * | 2017-11-30 | 2018-04-06 | 东南大学成贤学院 | A kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity |
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2011
- 2011-05-25 CN CN2011201700281U patent/CN202046957U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684454A (en) * | 2012-04-27 | 2012-09-19 | 广州高澜节能技术股份有限公司 | Composite external cooling system for DC power transmission converter valve |
| CN103601324A (en) * | 2013-10-21 | 2014-02-26 | 安徽省华森电源有限公司 | Full-automatic preparation device of high-purity water used for lead-acid cells |
| CN103880217A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Drained water recycling model for soft water preparation system and recycling method |
| CN104310630A (en) * | 2014-09-29 | 2015-01-28 | 滁州友林科技发展有限公司 | Oilfield produced water purification system and control method thereof |
| CN104310630B (en) * | 2014-09-29 | 2016-01-20 | 滁州友林科技发展有限公司 | Oil field extracted water water cleaning systems and control method thereof |
| CN105233694A (en) * | 2015-11-11 | 2016-01-13 | 珠海格力电器股份有限公司 | Water treatment system |
| CN106396208A (en) * | 2016-11-21 | 2017-02-15 | 浙江水利水电学院 | Pure water preparation process for clinical laboratory of hospital |
| CN107879513A (en) * | 2017-11-30 | 2018-04-06 | 东南大学成贤学院 | A kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity |
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Granted publication date: 20111123 Termination date: 20120525 |