CN105174378A - Wastewater proportioner - Google Patents
Wastewater proportioner Download PDFInfo
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- CN105174378A CN105174378A CN201510582252.4A CN201510582252A CN105174378A CN 105174378 A CN105174378 A CN 105174378A CN 201510582252 A CN201510582252 A CN 201510582252A CN 105174378 A CN105174378 A CN 105174378A
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- waste water
- branch road
- water
- proportioner
- water ratio
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Abstract
The invention aims to provide a wastewater proportioner which mainly solves the technical problem of low wastewater proportion selectivity in the existing wastewater proportioner. The wastewater proportioner comprises a first wastewater proportion branch, a second wastewater proportion branch, a first control switch and a second control switch, wherein the first wastewater proportion branch and second wastewater proportion branch are arranged in parallel; and the first control switch and second control switch are used for respectively controlling the connecting state of the first wastewater proportion branch and second wastewater proportion branch. By arranging the parallel wastewater proportion branches capable of independently controlling the on-off state, the wastewater proportioner can implement higher wastewater proportion selectivity.
Description
Technical field
The present invention relates to water purifying plant field, be specifically related to a kind of waste water proportioner.
Background technology
Waste water proportioner is called for short waste water ratio, is the important devices in reverse osmosis water purifier and nanofiltration water-purifying machine.Its effect is by carrying out having sufficiently high pressure before throttling makes reverse osmosis membrane or nanofiltration membrane to dense water end (W.E.), to ensure that current through diaphragm, thus can reach the object of water processed.
Current waste water ratio electromagnetic valve in the industry can only arrange single waste water ratio mostly, and namely the flow of waste water ratio is fixing, cannot carry out multiple choices according to the water quality of different areas.In the place of water quality inferiority, rinse not enough, very big to the damage of reverse osmosis membrane; In the place that water quality is good, cause the serious waste of wash-down water.
The patent No. is that the patent of CN202181228U provides a kind of adjustable waste water ratio electromagnetic valve, adjusting water outlet flow is carried out by changing aperture, its principle is by TDS probe measurement dense water TDS value and sends feedback signal, then passes to motor through electric-controlled plate process, regulates porose disc outlet water orifice diameter size.This patent structure is comparatively complicated, and the selection mode of waste water ratio is less, and cost is higher.
The patent No. is that the patent of CN203176370U provides a kind of waste water ratio electromagnetic valve, and realized the selection of two kinds of waste water ratios by Controlling solenoid valve, relatively general waste water ratio electromagnetic valve has certain improvement.Its weak point be the selection mode of waste water ratio very little, only have two kinds of waste water ratios to select, there is no pre-washing function, use magnetic valve to realize the opening and closing of waste water ratio, not simply.
Summary of the invention
In view of this, the invention provides one can provide waste water ratio adjustable, has the waste water proportioner of various wastewater ratio.
For reaching this object, the present invention by the following technical solutions:
A kind of waste water proportioner, comprises the first waste water ratio branch road in parallel and the second waste water ratio branch road, also comprises the first trip switch and the second trip switch for controlling the connection state of the first waste water ratio branch road and the second waste water ratio branch road respectively.
Preferably, in aforesaid waste water proportioner, described waste water proportioner comprises intake antrum, the first water chamber, the second water chamber, the first kapillary, the second kapillary and water exit; Wherein first water chamber one end connects intake antrum, and the other end connects water exit by the first kapillary; Second water chamber one end connects intake antrum, and the other end connects water exit by the second kapillary; Described intake antrum, the first water chamber, the first kapillary and water exit form the first waste water ratio branch road; Described intake antrum, the second water chamber, the second kapillary and water exit form the second waste water ratio branch road.
Preferably, in aforesaid waste water proportioner, described first trip switch is for controlling the connection state between intake antrum and the first water chamber; Described second trip switch is for controlling the connection state between intake antrum and the second water chamber.
Preferably, in aforesaid waste water proportioner, also comprise the 3rd branch road and the 3rd trip switch, the 3rd branch road is connected with described first waste water ratio branch road and the second waste water ratio branch circuit parallel connection, and the 3rd trip switch is for controlling the connection state of the 3rd branch road; Described 3rd branch road is the 3rd waste water ratio branch road or rinses branch road.
Preferably, in aforesaid waste water proportioner, also comprise the 3rd branch road and the 3rd trip switch, the 3rd branch road is connected with described first waste water ratio branch road and the second waste water ratio branch circuit parallel connection, and the 3rd trip switch is for controlling the connection state of the 3rd branch road; Described 3rd branch road is the 3rd waste water ratio branch road or rinses branch road.
Preferably, in aforesaid waste water proportioner, described 3rd branch road is the 3rd waste water ratio branch road; Described waste water proportioner also comprises the 3rd water chamber, three capillary; 3rd water chamber one end connects intake antrum, and the other end connects water exit by three capillary; Described intake antrum, the 3rd water chamber, three capillary and water exit form the 3rd waste water ratio branch road.
Preferably, in aforesaid waste water proportioner, described 3rd branch road rinses branch road; Described waste water proportioner also comprises the 3rd water chamber; 3rd water chamber one end connects intake antrum, and the other end connects water exit; Described intake antrum, the 3rd water chamber and water exit form flushing branch road.
Preferably, in aforesaid waste water proportioner, described 3rd trip switch is for controlling the connection state between intake antrum and the 3rd water chamber.
Preferably, in aforesaid waste water proportioner, described trip switch is manually operated control valve or magnetic valve.
Preferably, in aforesaid waste water proportioner, the diameter of described kapillary is identical or different.
The invention has the beneficial effects as follows:
1, by arranging at least two waste water ratio branch roads in parallel and controlling the trip switch of break-make of every bar waste water ratio branch road respectively, at least three kinds of waste water ratios can be realized selective, add the range of choice of waste water ratio.
2, by arranging three waste water ratio branch roads in parallel, the range of choice of nearly 7 kinds of waste water ratios can be realized.
3, rinsing branch road by increasing, can also pre-washing function be realized waste water ratio is selectable while, extending the work-ing life of water-purifying machine, do not need to set up extra flush valve simultaneously, reduce cost.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:
Fig. 1 is the schematic diagram of the first embodiment of the present invention.
Fig. 2 is the schematic diagram of the second embodiment of the present invention
Embodiment
Based on embodiment, present invention is described below, but the present invention is not restricted to these embodiments.In hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.In order to avoid obscuring essence of the present invention, known method, process, flow process, element do not describe in detail.
Embodiment one is the first embodiment of waste water proportioner of the present invention.
As shown in Figure 1.Waste water proportioner comprises valve body 2, is provided with water entry 2, water exit 11, intake antrum 3 and at least two water chambers in valve body.Water entry 2 is connected with intake antrum 3, and at least two water chambers are connected in parallel between intake antrum 3 and water exit 11.Be provided with water eliminator 4 between intake antrum 3 and water chamber, water eliminator 4 is respectively equipped with posticum 5 in the position relative with each water chamber position, be communicated with water chamber by posticum 5 intake antrum 3.Kapillary can be set in water chamber throttling is carried out to dense water, before ensureing filter membrane, there is sufficiently high pressure.
As one preferably embodiment, water chamber comprises the first water chamber 63, second water chamber 62.Wherein first water chamber 63 one end connects intake antrum 3, and the other end connects water exit 11 by the first kapillary 73; Second water chamber 62 one end connects intake antrum 3, and the other end connects water exit 11 by the second kapillary 72; Described intake antrum 3, first water chamber 63, first kapillary 73 and water exit 11 form the first waste water ratio branch road; Described intake antrum 3, second water chamber 62, second kapillary 71 and water exit 11 form the second waste water ratio branch road.Position relative with the first water chamber 63, second water chamber 62 position on valve body is respectively equipped with the first trip switch 10 and the second trip switch 9, first trip switch 10 disconnects for the connected sum controlled between the first water chamber 63 and intake antrum 3; Second trip switch 9 disconnects for the connected sum controlled between the second water chamber 62 and intake antrum 3.Preferably, the first trip switch 10 and the second trip switch 9 control to realize being communicated with or disconnection of control first waste water ratio branch road and the second waste water ratio branch road by closing with the mode of the posticum 5 opened on water eliminator 4.First trip switch 10 and the second trip switch 9 preferably can adopt the mode of manually operated control valve or magnetic valve, in the present embodiment in order to simplified construction, reduce costs the mode that have employed manually operated control valve.There is the projection suitable with posticum 5 shape on water eliminator the lower end of manually operated control valve.Manually operated control valve realizes manually moving up and down by the screw thread between valve body 1, thus realizes posticum 5 that is closed or that open on water eliminator 4.Preferably, the posticum 5 of water eliminator 4 arranges sealing-ring (not shown), to improve the effect of sealing.
When control first trip switch 10 is opened, when the second trip switch 9 cuts out, the first waste water ratio branch road is communicated with, and the second waste water ratio branch road disconnects.Now the waste water ratio of whole waste water proportioner is the waste water ratio size of the first kapillary 73.When control second trip switch 9 is opened, when the first trip switch 10 cuts out, the second waste water ratio branch road is communicated with, and the first waste water ratio branch road disconnects.Now the waste water ratio of whole waste water proportioner is the waste water ratio size of the second kapillary 72.When the first trip switch 10 and the second trip switch 9 are opened simultaneously, the one the second waste water ratio branch roads are communicated with simultaneously, and now the waste water ratio of whole waste water proportioner is the waste water ratio size sum of the first kapillary 73 and the second kapillary 72.Like this when the first kapillary 73 and the second kapillary 72 have different diameters, the selection of three kinds of waste water ratios can be realized.
Preferably, the first kapillary can be identical with the diameter of the second kapillary, also can be different, in different situations, can realize maximum three kinds of waste water ratios.
As one preferably embodiment, as shown in Figure 1, the 3rd waste water ratio branch road and the 3rd trip switch is also provided with in valve body, 3rd waste water ratio branch road is connected with described first waste water ratio branch road and the second waste water ratio branch circuit parallel connection, and the 3rd trip switch is for controlling the connection state of the 3rd waste water ratio branch road.
Concrete, waste water proportioner also comprises the 3rd water chamber 61, three capillary 71; 3rd water chamber 61 one end connects intake antrum 3, and the other end connects water exit 11 by three capillary 71; Described intake antrum 3, the 3rd water chamber 61, three capillary 71 and water exit 11 form the 3rd waste water ratio branch road.By being arranged at the relative posticum of the 3rd water chamber 61 and being communicated with on water eliminator 4 between intake antrum 3 and the 3rd water chamber 61.The similar of the 3rd trip switch 8 and the first trip switch 10 and the second trip switch 9, realizes being communicated with or disconnection of control the 3rd waste water ratio branch road by closing with the mode of the posticum 5 opened on water eliminator 4.3rd trip switch 8 also can adopt manually operated control valve or magnetic valve.
Also controlling the break-make of three waste water ratio branch roads by arranging three waste water ratio branch roads respectively, seven kinds of waste water ratios can be realized at most, be specially:
1, the first waste water ratio branch road is communicated with, and second, third waste water ratio branch road disconnects, and the waste water ratio of waste water proportioner is the waste water ratio of the first kapillary 73;
2, the second waste water ratio branch road is communicated with, and the first, the 3rd waste water ratio branch road disconnects, and the waste water ratio of waste water proportioner is the waste water ratio of the second kapillary 72;
3, the 3rd waste water ratio branch road is communicated with, and first, second waste water ratio branch road disconnects, and the waste water ratio of waste water proportioner is the waste water ratio of three capillary 71;
4, the first waste water ratio branch road disconnects, and second, third waste water ratio branch road is communicated with, and the waste water ratio of waste water proportioner is the waste water ratio that the second kapillary 72 adds three capillary 71;
5, the second waste water ratio branch road disconnects, and the first, the 3rd waste water ratio branch road is communicated with, and the waste water ratio of waste water proportioner is the waste water ratio that the first kapillary 73 adds three capillary 71;
6, the 3rd waste water ratio branch road disconnects, and first, second waste water ratio branch road is communicated with, and the waste water ratio of waste water proportioner is the waste water ratio that the first kapillary 73 adds the second kapillary 72;
7, first, second, third waste water ratio branch road is all communicated with, and the waste water ratio of waste water proportioner is that the first kapillary 73 adds that the second kapillary 72 adds the waste water ratio of three capillary 71;
The diameter of the first kapillary 73, second kapillary 72, three capillary 71 can be identical or different, 7 kinds of different waste water ratios can be realized at most by combining the kapillary of different diameter, increase the waste water ratio regulation range of water purifier, improve the conformability of water purifier.
Embodiment two
Embodiment two is second embodiments of waste water proportioner of the present invention.The effect of waste water proportioner is generally: 1, keep filter membrane to have sufficiently high pressure in dense water side, to ensure that current pass filter membrane and have enough flow dynamics; 2, constantly discharge dense water in certain flow ratio, to ensure that current have larger tangential flow velocity in filter membrane dense water side, the ion in anti-sealing, particulate matter etc. cause filter membrane to block in filter membrane surface deposition.Existing filter membrane will make it filter not block for a long time, need regularly to clean filter membrane.The waste water proportioner of embodiment two is exactly problem in order to solve flushing and designs, be with the embodiment difference with three waste water ratio branch roads in embodiment one, in embodiment two, the 3rd waste water ratio branch road is replaced with flushing branch road, to realize the function of rinsing water-purifying machine.As shown in Figure 2, concrete mode is as follows: the connection of rinsing branch road and the first waste water ratio branch road and the second waste water ratio branch circuit parallel connection.Waste water proportioner also comprises the 3rd water chamber 61; 3rd water chamber 61 one end connects intake antrum 3, and the other end connects water exit 11; Described intake antrum 3, the 3rd water chamber 3 and water exit 11 form the 3rd waste water ratio branch road.Preferably, the 3rd water chamber 3 is provided with water outlet 84, is connected with water exit 11 by water outlet 84.4th trip switch 8 realizes controlling to rinse being communicated with or disconnection of branch road with the mode of the posticum 5 opened on water eliminator 4 by closing.4th trip switch 8 can adopt manually operated control valve or magnetic valve, and as shown in Figure 2, what the 4th trip switch 8 adopted is magnetic valve, comprises spool 83 and spring 82, and under off-position, spool 82 disconnects under the action of the spring and rinses branch road; In the energized state, spool 82 leaves the posticum relative with the 3rd water chamber 61 on water eliminator 4, rinses branch road and is communicated with.Preferably, the posticum of water eliminator 4 relative to spool 82 is provided with sealing-ring to strengthen sealing effectiveness.
The effect of rinsing branch road is: after water purifier work for some time, open the 4th trip switch 8, throttling set is not had owing to rinsing on branch road, dense water enters intake antrum 3 by water entry 2 and enters the 3rd water chamber 61 by the posticum on water eliminator 4 and enter into water exit 11 through water outlet 84, at this moment the flow velocity flowing through filter membrane dense water one side surface is very large, to rinse the tamper that filter membrane surface may deposit.
While water purifier function is rinsed in realization, the waste water proportioner in embodiment two also has the waste water ratio of maximum three kinds selective, and this can also realize the function of rinsing water purifier while improving the scope of waste water ratio, extends the work-ing life of water purifier.
Although the scheme of three parallel branches that the waste water proportioner of the application adopts in both embodiments; but should not be restricted in the scheme that can only be applied in three parallel branches; all schemes comprising the also chord road of at least two independent control break-makes; and also chord road all should be considered as being any amendment done within spirit of the present invention and principle, equivalent replacement, improvement for schemes such as waste water ratio branch road or flushing branch roads, all should be included within protection scope of the present invention
In addition, it should be understood by one skilled in the art that the accompanying drawing provided at this is all for illustrative purposes, and accompanying drawing is not necessarily drawn in proportion.
Meanwhile, should be appreciated that example embodiment is provided, to make the disclosure be comprehensive, and its scope is fully conveyed to those skilled in the art.A lot of specific detail (such as the example of particular elements, equipment and method) is presented to provide thorough understanding of the disclosure.It will be apparent to one skilled in the art that and do not need to adopt specific detail, example embodiment can be implemented with much different forms, and example embodiment should not be understood to limit the scope of the present disclosure.In some example embodiments, well-known device structure and well-known technology are not described in detail.
When an element or layer be mentioned as another element or layer " on ", " being engaged to ", " being connected to " or " being coupled to " another element or layer time, its can directly on another element or layer, directly engaged, connected or be connected to another element or layer, or intermediary element or layer can be there is.By contrast, when an element be mentioned as " directly " another element or layer " on ", " being directly engaged to ", " being directly connected to " or " being directly coupled to " another element or layer time, intermediary element or layer can not be there is.Other word for describing relation between element should be explained in a similar manner (such as, " between " and " directly between ", " vicinity " and " being directly close to " etc.).As used herein, term "and/or" comprises arbitrary in the Listed Items of one or more association or all combines.
Although term first, second, third, etc. can be used to describe each element, parts, region, layer and/or section at this, these elements, parts, region, layer and/or section should not limited by these terms.These terms can only for distinguishing element, parts, region, layer or a section and another element, region, layer or section.The term of such as " first ", " second " and other numerical value term when not meaning that order or sequentially when this uses, unless context explicitly points out.Thus, the first element discussed below, parts, region, layer or section can be called as the second element, parts, region, layer or section, and do not deviate from the instruction of example embodiment.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Claims (10)
1. a waste water proportioner, comprises the first in parallel waste water ratio branch road and the second waste water ratio branch road, it is characterized in that: also comprise the first trip switch and the second trip switch for controlling the connection state of the first waste water ratio branch road and the second waste water ratio branch road respectively.
2. waste water proportioner as claimed in claim 1, is characterized in that: described waste water proportioner comprises intake antrum (3), the first water chamber (63), the second water chamber (62), the first kapillary (73), the second kapillary (72) and water exit (11);
Wherein the first water chamber (63) one end connects intake antrum (3), and the other end connects water exit (11) by the first kapillary (73);
Second water chamber (62) one end connects intake antrum (3), and the other end connects water exit (11) by the second kapillary (72);
Described intake antrum (3), the first water chamber (63), the first kapillary (73) and water exit (11) form the first waste water ratio branch road;
Described intake antrum (3), the second water chamber (62), the second kapillary (72) and water exit (11) form the second waste water ratio branch road.
3. waste water proportioner as claimed in claim 2, is characterized in that: described first trip switch (10) is for controlling the connection state between intake antrum (3) and the first water chamber (63); Described second trip switch (9) is for controlling the connection state between intake antrum (3) and the second water chamber (62).
4. waste water proportioner as claimed in claim 1, it is characterized in that: also comprise the 3rd branch road and the 3rd trip switch (8), 3rd branch road is connected with described first waste water ratio branch road and the second waste water ratio branch circuit parallel connection, and the 3rd trip switch (8) is for controlling the connection state of the 3rd branch road; Described 3rd branch road is the 3rd waste water ratio branch road or rinses branch road.
5. waste water proportioner as claimed in claim 2 or claim 3, it is characterized in that: also comprise the 3rd branch road and the 3rd trip switch (8), 3rd branch road is connected with described first waste water ratio branch road and the second waste water ratio branch circuit parallel connection, and the 3rd trip switch (8) is for controlling the connection state of the 3rd branch road; Described 3rd branch road is the 3rd waste water ratio branch road or rinses branch road.
6. waste water proportioner as claimed in claim 5, is characterized in that: described 3rd branch road is the 3rd waste water ratio branch road; Described waste water proportioner also comprises the 3rd water chamber (61), three capillary (71); 3rd water chamber (61) one end connects intake antrum (3), and the other end connects water exit (11) by three capillary (71); Described intake antrum (3), the 3rd water chamber (61), three capillary (71) and water exit (11) form the 3rd waste water ratio branch road.
7. waste water proportioner as claimed in claim 5, is characterized in that: described 3rd branch road rinses branch road; Described waste water proportioner also comprises the 3rd water chamber (61); 3rd water chamber (61) one end connects intake antrum (3), and the other end connects water exit (11); Described intake antrum (3), the 3rd water chamber (61) and water exit (3) form flushing branch road.
8. waste water proportioner as claimed in claim 7, is characterized in that: described 3rd trip switch (8) is for controlling the connection state between intake antrum (3) and the 3rd water chamber (11).
9. the waste water proportioner as described in claim 1 or 4 or 8, is characterized in that: described trip switch is manually operated control valve or magnetic valve.
10. the waste water proportioner as described in claim 2 or 6, is characterized in that: the diameter of described kapillary is identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582252.4A CN105174378B (en) | 2015-09-14 | 2015-09-14 | A kind of waste water proportioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582252.4A CN105174378B (en) | 2015-09-14 | 2015-09-14 | A kind of waste water proportioner |
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| Publication Number | Publication Date |
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| CN105174378A true CN105174378A (en) | 2015-12-23 |
| CN105174378B CN105174378B (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510582252.4A Expired - Fee Related CN105174378B (en) | 2015-09-14 | 2015-09-14 | A kind of waste water proportioner |
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| Country | Link |
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| CN (1) | CN105174378B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195397A (en) * | 2016-09-13 | 2016-12-07 | 北京碧水源净水科技有限公司 | Stepless adjustable waste water proportional controller |
| CN110803790A (en) * | 2019-11-21 | 2020-02-18 | 杭州欧泉科技有限公司 | RO reverse osmosis membrane water purification treatment device |
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| JP2002035515A (en) * | 2000-07-26 | 2002-02-05 | Matsushita Electric Works Ltd | Bathtub water cleaning apparatus |
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| CN200968441Y (en) * | 2006-10-11 | 2007-10-31 | 佳尼特(上海)纯水设备有限公司 | Flushing electromagnetic valve |
| CN201268604Y (en) * | 2008-08-07 | 2009-07-08 | 杨克庆 | Wastewater proportional controller with manual flushing function |
| CN203176370U (en) * | 2013-02-04 | 2013-09-04 | 深圳安吉尔饮水产业集团有限公司 | Waste water ratio electromagnetic valve |
| CN203641551U (en) * | 2013-12-24 | 2014-06-11 | 上海梅诺环保科技有限公司无锡分公司 | Ball valve with waste water ratio device |
| CN103964595A (en) * | 2013-02-04 | 2014-08-06 | 深圳安吉尔饮水产业集团有限公司 | Water purifier, and pulse wastewater discharging apparatus and control method thereof |
| CN205045854U (en) * | 2015-09-14 | 2016-02-24 | 珠海格力电器股份有限公司 | Waste water proportioner |
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2015
- 2015-09-14 CN CN201510582252.4A patent/CN105174378B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002035515A (en) * | 2000-07-26 | 2002-02-05 | Matsushita Electric Works Ltd | Bathtub water cleaning apparatus |
| KR20030073159A (en) * | 2002-03-08 | 2003-09-19 | 김성현 | Advanced water treatment method using crossflow-microfiltration and powdered activated carbon and equipment therefor |
| CN200968441Y (en) * | 2006-10-11 | 2007-10-31 | 佳尼特(上海)纯水设备有限公司 | Flushing electromagnetic valve |
| CN201268604Y (en) * | 2008-08-07 | 2009-07-08 | 杨克庆 | Wastewater proportional controller with manual flushing function |
| CN203176370U (en) * | 2013-02-04 | 2013-09-04 | 深圳安吉尔饮水产业集团有限公司 | Waste water ratio electromagnetic valve |
| CN103964595A (en) * | 2013-02-04 | 2014-08-06 | 深圳安吉尔饮水产业集团有限公司 | Water purifier, and pulse wastewater discharging apparatus and control method thereof |
| CN203641551U (en) * | 2013-12-24 | 2014-06-11 | 上海梅诺环保科技有限公司无锡分公司 | Ball valve with waste water ratio device |
| CN205045854U (en) * | 2015-09-14 | 2016-02-24 | 珠海格力电器股份有限公司 | Waste water proportioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195397A (en) * | 2016-09-13 | 2016-12-07 | 北京碧水源净水科技有限公司 | Stepless adjustable waste water proportional controller |
| CN110803790A (en) * | 2019-11-21 | 2020-02-18 | 杭州欧泉科技有限公司 | RO reverse osmosis membrane water purification treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105174378B (en) | 2018-08-07 |
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