CN108894296A - The micro-nano bubble closestool accessory device of splashproof - Google Patents
The micro-nano bubble closestool accessory device of splashproof Download PDFInfo
- Publication number
- CN108894296A CN108894296A CN201810905747.XA CN201810905747A CN108894296A CN 108894296 A CN108894296 A CN 108894296A CN 201810905747 A CN201810905747 A CN 201810905747A CN 108894296 A CN108894296 A CN 108894296A
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- China
- Prior art keywords
- micro
- solenoid valve
- bubble
- closestool
- nano
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
- E03D11/06—Bowls with downwardly-extending flanges for the sake of flushing
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
- E03D2009/028—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a liquid substance
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Epidemiology (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Bathtubs, Showers, And Their Attachments (AREA)
Abstract
The present invention relates to a kind of micro-nano bubble closestool accessory device of splashproof, inlet pipeline is connected to flashing valve through micro-nano bubble generator, and flashing valve is connected to closestool bucket cylinder by flushing pipe；Inlet water solenoid valve is set on inlet pipeline, and control unit is connect with the solenoid valve and inductor signal respectively；The signal that inductor reception user generates when close, feeds back to control unit, and control unit controls the opening and closing of inlet water solenoid valve.The micro-nano air-bubble that the present invention generates is directly entered closestool bucket cylinder without water tank, and then guarantees the bubble concentration into the micro-nano air-bubble of bucket cylinder to greatest extent；Micro-nano air-bubble prepares instant use immediately, avoid its in the next use before disappear totally；In closestool formed one layer of above super dense foam layer of bubbling through the water column, play the role of splashproof, isolation peculiar smell while can before every use after the bucket inside wall of cylinder formed one layer of fine and close nano bubble interface moisture film, to improve the stain resistance of inner wall.
Description
Technical field
The present invention relates to a kind of closestool accessory devices, are a kind of micro-nano bubble closestool accessory devices of splashproof specifically.
Background technique
Date of publication is on August 29th, 2012, and document number is the Chinese patent literature of CN101228325B, is proposed a kind of micro-
Nano bubble closestool can play and improve closet flushing effect, reduce amount of flush water, prevent the various effects such as splashing.However, above-mentioned
Flush toilet apparatus proposes the control unit described in it, is controlled in the case where closet flushing, so as to mix with the bath
Bubble be the mm grade of bubble, and to closestool accumulation water to the bubble generated by the fine gas bubbles generator into
Row control, but the closestool discharges microbubble to water tank under conditions of closestool accumulates water, but the micron bubble in water tank will be
Next time, totally using preceding disappearance effect was poor.
Summary of the invention
The technical problem to be solved in the invention is：Existing micro-nano bubble closestool, under conditions of closestool accumulates water
Microbubble is discharged to water tank, but the micron bubble in water tank preceding in the next use will disappear totally, effect is poor.
The present invention uses following technical scheme：
A kind of micro-nano bubble closestool accessory device of splashproof, including：Micro-nano bubble generator 8, flashing valve, inductor,
Control unit；Inlet pipeline 2 is connected to flashing valve through micro-nano bubble generator 8, and flashing valve is connected to horse by flushing pipe 3
Bucket bucket cylinder；Inlet water solenoid valve 7 is set on inlet pipeline 2, and control unit is connect with the solenoid valve and inductor signal respectively；Induction
The signal that device reception user generates when close, feeds back to control unit, and control unit controls the opening and closing of inlet water solenoid valve 7.
Further, the inlet water solenoid valve 7 is equipped with delays time to control component, controls solenoid valve time-delay closing.
It further, further include detergent container 10, detergent container is directly connected to bubble generator 8；Or it is logical
It crosses Venturi tube structure 9 to be connected to bubble generator 8, detergent container 10 is equipped with check valve 11, and the opening and closing of the check valve 11 is controlled
The control of component processed.
Further, tourie 9 is additionally provided with before being located at microbubble generator 8 on inlet pipeline 2, tourie 9 is used for water
Internal air comes into full contact with, dissolves with it；Tourie 9 is equipped with the upper emptying solenoid valve 13 for emptying internal gas-liquid；It inhales
Intermediate solenoid valve 14 is equipped between closed cans 9 and micro-nano bubble generator 8；Tourie 9 is connected to flushing pipe 3, is equipped with therebetween
Lower emptying solenoid valve 15；The opening and closing of the intermediate solenoid valve 14, upper emptying solenoid valve 13, lower emptying solenoid valve 15 is by control unit
Control.
Further, the flashing valve is bath valve base 4, is fixed at the bottom of cistern；The inductor
For infrared inductor 6.
Further, the inlet pipeline 2 is equipped with hydroelectric generator charge controller 5, for control unit and each
Solenoid valve power supply.
Further, there is layer-by-layer flow restriction, which, which has, is parallel to each other in the bubble generator 8
Multiple current limliting layers, the tapered shape of current limliting layer.
A kind of working method of the micro-nano bubble closestool accessory device of above-mentioned splashproof, when inductor senses that user connects
When nearly closestool, inlet water solenoid valve 7 is opened, and the water of inlet pipeline 2 reaches micro-nano bubble generator 8, and static pressure is reduced suddenly, former
The gas being dissolved in water starts to discharge into water, and immediately by turbulent flow area, the bubble moment of release is by cutting and grinding, shape
At micro/nano level bubble；The water for carrying above-mentioned bubble secretly flows through the Venturi tube structure 9 that can produce certain negative pressure, detergent container 10
In cleaning agent be mixed into outlet pipeline 3 by check valve 11 and micro-nano air-bubble, then pass to the bucket cylinder of closestool 1, if
After the dry second, inlet water solenoid valve 7 is automatically closed, and the bubble layer of 3-7cm densification is formed in bucket cylinder, and horse can be used normally in user
Bucket.
A kind of working method of the micro-nano bubble closestool accessory device of above-mentioned splashproof, when inductor senses that user connects
When nearly closestool, inlet water solenoid valve 7, intermediate solenoid valve 14 starts, and the water of inlet pipeline 2 reaches tourie 9, fills with internal air
Tap touching, dissolution, reach micro-nano bubble generator 8, flow velocity sharply increases, and being formed by negative pressure will be in detergent container 10
Cleaning agent sucking, while the former gas being dissolved in water starts to discharge into water, forms micro/nano level bubble；Then pass to closestool
1 bucket cylinder, after several seconds, inlet water solenoid valve 7, intermediate solenoid valve 14 is automatically closed, and is led in cylinder and is formed the bubble of 3-7cm densification
Closestool can be used normally in layer, user；After user leaves, upper emptying solenoid valve 13, lower emptying solenoid valve 15 is opened, and will be inhaled
Closed cans 9 empties, and waits use next time.
The beneficial effects of the present invention are：
1) the micro-nano air-bubble generated is directly entered closestool bucket cylinder without water tank, so guarantee to greatest extent into
Enter the bubble concentration of the micro-nano air-bubble of barrel cylinder；
2) micro-nano air-bubble prepares instant use immediately, avoid its in the next use before disappear totally；
3) by automatic sensing and control and time delay, preparation immediately uses, emptying immediately, high degree of automation immediately；
4) negative pressure generated using micro-nano bubble generator or Venturi tube structure, cleaning agent is automatically drawn into, one action two
?；
5) accounting that nano grade air bubbles in fine gas bubbles can be improved, reduces the accounting of microbubble, and solution is currently received
The excessive problem of microbubble generation quantity during meter level bubble formation, and then reach reduction amount of flush water, prevent splashing etc.
The effect of various effects.
6) in closestool formed one layer bubble through the water column more than 0.5-10cm super dense foam layer, play splashproof, isolation
While the effect of peculiar smell can before every use after the bucket inside wall of cylinder formed one layer of fine and close nano bubble interface moisture film, from
And improve the stain resistance of inner wall.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of micro-nano bubble generator in embodiment one.
Fig. 3 is the structural schematic diagram of the embodiment of the present invention two.
In figure, 1. closestools, 2. inlet pipelines, 3. sell pipeline, 4. bath valve bases, 5. hydroelectric generator charge controls
Device, 6. infrared inductors, 7. inlet water solenoid valves, 8. microbubble generators, 9. touries, 10. detergent containers, 11. check valves,
Emptying solenoid valve on 13., 14. intermediate solenoid valves, 15. lower emptying solenoid valves.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific examples.
Embodiment one：
Referring to Fig. 1, a kind of micro-nano bubble closestool accessory device of splashproof, including：Micro-nano bubble generator 8, flashing valve,
Inductor, control unit；Inlet pipeline 2 is connected to flashing valve through micro-nano bubble generator 8, and flashing valve passes through flushing pipe 3
It is connected to closestool bucket cylinder；On inlet pipeline 2 be arranged inlet water solenoid valve 7, control unit respectively with the solenoid valve and inductor signal
Connection；The signal that inductor reception user generates when close, feeds back to control unit, and control unit controls inlet water solenoid valve 7
Opening and closing.
In this embodiment, the inlet water solenoid valve 7 is equipped with delays time to control component, controls solenoid valve time-delay closing (attached drawing
In do not show).
It in this embodiment, further include detergent container 10 referring to Fig. 1, detergent container directly connects with bubble generator 8
It is logical；Or be connected to by Venturi tube structure 9 with bubble generator 8, detergent container 10 is equipped with check valve 11, the check valve 11
Control of the opening and closing by control unit.
In this embodiment, referring to Fig. 1, the flashing valve is bath valve base 4, is fixed at the bottom of cistern
Portion；The inductor is infrared inductor 6.
In this embodiment, micro-nano bubble generator is using including pressure releasing process or including waterpower driven rotary
One or more of combinations of shear history or including mechanical shearing process micro-nano bubble occurring mode；Specifically, ginseng
See Fig. 2, there is layer-by-layer flow restriction in the bubble generator 8, which has the multiple current limlitings being parallel to each other
Layer, the tapered shape of current limliting layer.
When the work of the above-mentioned micro-nano bubble closestool accessory device of splashproof：When inductor senses user close to closestool
When, inlet water solenoid valve 7 is opened, and the water of inlet pipeline 2 reaches micro-nano bubble generator 8, and static pressure is reduced suddenly, and original is dissolved in
Gas in water starts to discharge into water, and immediately by turbulent flow area, the bubble moment of release by cutting and grinding, forms micro-nano
Meter level bubble；The water for carrying above-mentioned bubble secretly flows through the Venturi tube structure 9 that can produce certain negative pressure, clear in detergent container 10
Lotion is mixed into outlet pipeline 3 by check valve 11 and micro-nano air-bubble, then passes to the bucket cylinder of closestool 1, after several seconds,
Inlet water solenoid valve 7 is automatically closed, and the bubble layer of 3-7cm densification is formed in bucket cylinder, and closestool can be used normally in user.
In this embodiment, detergent container is filled by pipeline with inlet pipeline or outlet pipeline or micro-nano bubble
It sets and is connected, check valve is also provided on connecting line, effect is cleaning agent only in micro-nano bubble generator
It, just can loss by negative pressure suction line caused by the process, without will cause cleaning agent during work；
In this embodiment, it can be controlled by modes such as manual key, infrared inductor, voice controller, remote controlers
The unlatching of a solenoid valve；
In this embodiment, the electric power of a whole set of accessory can be powered by direct current, AC power source, can also be by using often
Secondary water-rinsing process utilize water for producing electric power machine generation electricity be powered；
In this embodiment, detergent container installs cleaning agent or just has the liquid of surface active ingredient；By being highly concentrated
Spend the mixing of micro-nano bubble, formed in closestool bucket cylinder one layer bubble through the water column more than 0.5-10cm super dense foam layer；
Embodiment two：
Embodiment two and embodiment one the difference is that：
Referring to Fig. 3, be additionally provided with tourie 9 before being located at microbubble generator 8 on inlet pipeline 2, tourie 9 for water with
Its internal air comes into full contact with, dissolves；Tourie 9 is equipped with the upper emptying solenoid valve 13 for emptying internal gas-liquid；It absorbs
Intermediate solenoid valve 14 is equipped between tank 9 and micro-nano bubble generator 8；Tourie 9 is connected to flushing pipe 3, is equipped with down therebetween
Emptying solenoid valve 15；The opening and closing of the intermediate solenoid valve 14, upper emptying solenoid valve 13, lower emptying solenoid valve 15 is by control unit
Control.
In this embodiment, with continued reference to Fig. 3, the inlet pipeline 2 is equipped with hydroelectric generator charge controller 5, is used for
It powers to control unit and each solenoid valve.
In this embodiment, gas needed for micro-nano bubble generator can come from closestool inlet pipeline in water body
The gas of dissolution can also pass through negative pressure self-priming or air pump injection (not showing in attached drawing).
When the above-mentioned micro-nano bubble closestool accessory device of splashproof works：When inductor senses user close to closestool,
Inlet water solenoid valve 7, intermediate solenoid valve 14 start, and the water of inlet pipeline 2 reaches tourie 9, come into full contact with internal air, is molten
Solution, reaches micro-nano bubble generator 8, and flow velocity sharply increases, and is formed by negative pressure and inhales the cleaning agent in detergent container 10
Enter, while the former gas being dissolved in water starts to discharge into water, forms micro/nano level bubble；The bucket cylinder of closestool 1 is then passed to,
After several seconds, inlet water solenoid valve 7, intermediate solenoid valve 14 is automatically closed, and is led in cylinder and is formed the bubble layer of 3-7cm densification, user
Closestool can be used normally；After user leaves, upper emptying solenoid valve 13, lower emptying solenoid valve 15 is opened, by 9 row of tourie
Sky waits use next time.
Embodiment is second is that preferred embodiment.
Above two embodiments are alternative embodiments of the invention, and those of ordinary skill in the art can also be basic herein
Upper to carry out various transformation or improvement, under the premise of not departing from the present invention total design, these transformation or improve all be should belong to
Within the scope of protection of present invention.
Claims (9)
1. a kind of micro-nano bubble closestool accessory device of splashproof, which is characterized in that including：
Micro-nano bubble generator (8), flashing valve, inductor, control unit；
Inlet pipeline (2) is connected to flashing valve through micro-nano bubble generator (8), and flashing valve is connected to by flushing pipe (3)
Closestool bucket cylinder；
Inlet water solenoid valve (7) are set on inlet pipeline (2), control unit is connect with the solenoid valve and inductor signal respectively；Sense
The signal generated when answering device reception user close, feeds back to control unit, control unit control inlet water solenoid valve (7) is opened
It closes.
2. the micro-nano bubble closestool accessory device of splashproof as described in claim 1, which is characterized in that the inlet water solenoid valve
(7) it is equipped with delays time to control component, controls solenoid valve time-delay closing.
3. the micro-nano bubble closestool accessory device of splashproof as claimed in claim 2, which is characterized in that further include detergent container
(10), detergent container is directly connected to bubble generator (8)；Or even by Venturi tube structure (9) and bubble generator (8)
Logical, detergent container (10) is equipped with check valve (11), the control of the opening and closing of the check valve (11) by control unit.
4. the micro-nano bubble closestool accessory device of splashproof as described in claim 1, which is characterized in that inlet pipeline (2) is upper
It is additionally provided with tourie (9) before microbubble generator (8), tourie (9) comes into full contact with its internal air for water, is molten
Solution；Tourie (9) is equipped with the upper emptying solenoid valve (13) for emptying internal gas-liquid；Tourie (9) and micro-nano bubble are sent out
Intermediate solenoid valve (14) are equipped between raw device (8)；Tourie (9) is connected to flushing pipe (3), is equipped with lower emptying solenoid valve therebetween
(15)；The intermediate solenoid valve (14), upper emptying solenoid valve (13), lower emptying solenoid valve (15) opening and closing by control unit control
System.
5. the micro-nano bubble closestool accessory device of splashproof as described in claim 1, it is characterised in that：The flashing valve is bath
Valve base (4), is fixed at the bottom of cistern；The inductor is infrared inductor (6).
6. the micro-nano bubble closestool accessory device of splashproof as described in claim 1, it is characterised in that：The inlet pipeline (2)
Equipped with hydroelectric generator charge controller (5), for powering to control unit and each solenoid valve.
7. the micro-nano bubble closestool accessory device of splashproof as described in claim 1, it is characterised in that：The bubble generator
(8) there is layer-by-layer flow restriction, which has the multiple current limliting layers being parallel to each other, and the current limliting layer is tapered in
Shape.
8. a kind of working method of the micro-nano bubble closestool accessory device of splashproof as claimed in claim 3, it is characterised in that：
When inductor senses user close to closestool, inlet water solenoid valve (7) is opened, and the water of inlet pipeline (2) reaches micro-nano
Rice bubble generator (8), static pressure is reduced suddenly, and the gas that original is dissolved in water starts to discharge into water, is immediately passed through
Turbulent flow area, the bubble moment of release by cutting and grinding, form micro/nano level bubble；
The water for carrying above-mentioned bubble secretly flows through the Venturi tube structure (9) that can produce certain negative pressure, clear in detergent container (10)
Lotion is mixed into outlet pipeline (3) by check valve (11) and micro-nano air-bubble, then passes to the bucket cylinder of closestool (1), if
After the dry second, inlet water solenoid valve (7) is automatically closed, and the bubble layer of 3-7cm densification is formed in bucket cylinder, and horse can be used normally in user
Bucket.
9. a kind of working method of the micro-nano bubble closestool accessory device of splashproof as claimed in claim 4, it is characterised in that：
When inductor senses user close to closestool, inlet water solenoid valve (7), intermediate solenoid valve (14) starting, inlet pipeline
(2) water reaches tourie (9), comes into full contact with, dissolves with internal air, reach micro-nano bubble generator (8), flow velocity is anxious
Increase severely and add, be formed by negative pressure and suck the cleaning agent in detergent container (10), while the former gas being dissolved in water starts
Xiang Shuizhong release, forms micro/nano level bubble；The bucket cylinder for then passing to closestool (1), after several seconds, inlet water solenoid valve (7) is intermediate
Solenoid valve (14) is automatically closed, and leads in cylinder and forms the bubble layer of 3-7cm densification, and closestool can be used normally in user；
After user leaves, upper emptying solenoid valve (13), lower emptying solenoid valve (15) is opened, and tourie (9) is emptied, under waiting
Secondary use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905747.XA CN108894296B (en) | 2018-08-10 | 2018-08-10 | Splash-proof micro-nano bubble toilet accessory device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905747.XA CN108894296B (en) | 2018-08-10 | 2018-08-10 | Splash-proof micro-nano bubble toilet accessory device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108894296A true CN108894296A (en) | 2018-11-27 |
| CN108894296B CN108894296B (en) | 2021-04-27 |
Family
ID=64353773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810905747.XA Active CN108894296B (en) | 2018-08-10 | 2018-08-10 | Splash-proof micro-nano bubble toilet accessory device |
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| Country | Link |
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| CN (1) | CN108894296B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101228325A (en) * | 2005-07-26 | 2008-07-23 | 松下电工株式会社 | Flush toilet apparatus |
| KR20120045871A (en) * | 2010-11-01 | 2012-05-09 | 엘지전자 주식회사 | Washing apparatus for toilet |
| CN102635156A (en) * | 2012-05-16 | 2012-08-15 | 郭东箭 | Jet-type foaming toilet device |
| CN202627155U (en) * | 2012-06-14 | 2012-12-26 | 郭东箭 | Induction type foam flushing urinal |
| JP2013123676A (en) * | 2011-12-14 | 2013-06-24 | Sharp Corp | Ozone water generator, cleaning apparatus for sanitary fixture equipped with the same and ozone water generating method |
| CN206189545U (en) * | 2016-11-01 | 2017-05-24 | 段平华 | Increasingly in healthy closestool |
| CN206793439U (en) * | 2017-03-02 | 2017-12-26 | 淮南市知产创新技术研究有限公司 | A kind of microbubble generating mechanism |
-
2018
- 2018-08-10 CN CN201810905747.XA patent/CN108894296B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101228325A (en) * | 2005-07-26 | 2008-07-23 | 松下电工株式会社 | Flush toilet apparatus |
| KR20120045871A (en) * | 2010-11-01 | 2012-05-09 | 엘지전자 주식회사 | Washing apparatus for toilet |
| JP2013123676A (en) * | 2011-12-14 | 2013-06-24 | Sharp Corp | Ozone water generator, cleaning apparatus for sanitary fixture equipped with the same and ozone water generating method |
| CN102635156A (en) * | 2012-05-16 | 2012-08-15 | 郭东箭 | Jet-type foaming toilet device |
| CN202627155U (en) * | 2012-06-14 | 2012-12-26 | 郭东箭 | Induction type foam flushing urinal |
| CN206189545U (en) * | 2016-11-01 | 2017-05-24 | 段平华 | Increasingly in healthy closestool |
| CN206793439U (en) * | 2017-03-02 | 2017-12-26 | 淮南市知产创新技术研究有限公司 | A kind of microbubble generating mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 张希衡: "《废水治理工程》", 30 June 1984, 冶金工业出版社 * |
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| CN108894296B (en) | 2021-04-27 |
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