CN107060005A - A kind of sanitary wastewater recovery system - Google Patents

A kind of sanitary wastewater recovery system Download PDF

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Publication number
CN107060005A
CN107060005A CN201710173835.0A CN201710173835A CN107060005A CN 107060005 A CN107060005 A CN 107060005A CN 201710173835 A CN201710173835 A CN 201710173835A CN 107060005 A CN107060005 A CN 107060005A
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CN
China
Prior art keywords
water
water tank
tank
sanitary wastewater
toilet bowl
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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.)
Pending
Application number
CN201710173835.0A
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Chinese (zh)
Inventor
鲍建中
鲍帅汶
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to CN201710173835.0A priority Critical patent/CN107060005A/en
Publication of CN107060005A publication Critical patent/CN107060005A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03CDOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122Pipe-line systems for waste water in building
    • E03C1/1222Arrangements of devices in domestic waste water pipe-line systems
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041Greywater supply systems
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041Greywater supply systems
    • E03B2001/045Greywater supply systems using household water

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

The present invention discloses a kind of sanitary wastewater recovery system, including the water tank for collecting sanitary wastewater, the water tank bottom is provided with delivery port, the delivery port is connected with one end of drainpipe, and the other end of the drainpipe is connected with water storage tank of toilet bowl, and the water tank bottom is higher than the water storage tank of toilet bowl bottom, so that the sanitary wastewater in the water tank is flowed into the water storage tank of toilet bowl by the drainpipe.In application sanitary wastewater recovery system provided by the present invention, sanitary wastewater is flowed in water tank, water tank bottom sets delivery port and drainpipe, and drainpipe is connected with water storage tank of toilet bowl, because water tank bottom is higher than water storage tank of toilet bowl bottom, so, under sanitary wastewater self gravitation and liquid level atmospheric pressure collective effect, sanitary wastewater in water tank is quickly added in water storage tank of toilet bowl, without external impetus auxiliary, sanitary wastewater is effectively collected, and water storage tank of toilet bowl hydraulic pressure can be supplemented rapidly, meeting closestool needs the pressure of water.

Description

A kind of sanitary wastewater recovery system
Technical field
The present invention relates to sanitary wastewater recovery and reuse technology field, it is related to a kind of sanitary wastewater recovery system.
Background technology
In city, kitchen and toilet largely use water, vegetable sink, laundry tray, washbowl etc. use after water-white be discharged into vain Wastewater drainage pipe, fails to make full use of, and the closestool of toilet, bedpan are rinsed with clean water, very big to water resource waste;And And in house ornamentation equipment in the market, or during house decoration, all use and utilize device by sanitary wastewater application To the secondary Utilization plan of flush toilets between toilet, to find out its cause, being because disclosed waste water utilization device is used at present Get up not convenient, otherwise it is that closestool hydraulic pressure does not reach, it is impossible to closestool is timely and effectively rushed, otherwise it is that structure is excessively complicated, cost Height, and secondary water-supply device and electric power system are needed, noise pollution is big, and secondary energy consumption is high.
Some reutilizing device for waste water in toilet room are disclosed in current patent database, after emphasis uses washbowl, bathtub Wastewater collection after, be used further to rinse closestool, the excrement in bedpan.Its general simple method is set at the basin such as hand washing sink bottom Water tank, is then connected on the storage tank of closestool by one water tank by pipeline, the water outlet that the used water of hand washing sink passes through basin bottom Mouth is flowed into water tank, is then flowed into from water tank in the storage tank of closestool, still, because hand washing sink etc. is not advised with water frequency Restrain, when frequently using closestool, hydraulic pressure can not be fed in time, it is impossible to meet and frequently rushes closestool, cistern water level rising is slow, and hydraulic pressure is not It is enough, enough hydraulic pressure can not be mended rapidly again, high water level in short-term is unsustainable, when needing to flush the toilet especially with complete closestool, it is necessary to Deng for a long time, the storage tank of closestool could be washed by water after continuing full water, cumbersome, motor knot will be set by also having on water tank The waste water of collection, is input in water storage tank of toilet bowl by structure using external impetus, and its structure is more complicated, does not save, perishable, it is difficult to push away Extensively.
Therefore, how sanitary wastewater is effectively collected, is those skilled in the art while cistern hydraulic pressure can be supplemented rapidly Technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of sanitary wastewater recovery system, without external impetus auxiliary, life is effectively collected Waste water, and cistern hydraulic pressure can be supplemented rapidly, while simple in construction, it is easy to production and processing manufacture.
In order to solve the above technical problems, the present invention provides a kind of sanitary wastewater recovery system, including it is useless for collecting life The water tank of water, the water tank bottom is provided with delivery port, and the delivery port connects with one end of drainpipe, and the drainpipe is another One end is connected with water storage tank of toilet bowl, and the water tank bottom is higher than the water storage tank of toilet bowl bottom, so that in the water tank Sanitary wastewater is flowed into the water storage tank of toilet bowl by the drainpipe.
Preferably, the water tank includes some small water tanks, and a side of each small water tank opens up an opening, so that institute State after small water tank collection full water, unnecessary water is flowed in the adjacent small water tank through the opening.
Preferably, each small water tank bottom is provided with delivery port, and one end with the drainpipe is connected.
Preferably, in addition to it is arranged on water outlet, the check valve for preventing sanitary wastewater in the drainpipe from flowing back.
Preferably, in addition to be arranged on along catchment flow direction least significant end small water tank along, in waste waste suspend The overfall of impurity, and the overfall position is less than the top of each small water tank.
Preferably, in addition to be arranged on each small water tank bottom, in waste waste settle impurity blowoff valve, and The discharge outlet of the blowoff valve is connected with blow-off line.
Preferably, in addition to be arranged on along catchment flow direction head end small water tank along, for water in subsidiary water tank Running water water inlet, and be arranged on the running water water inlet end, the ball float of quantity of water in water tank is automatically replenished for control Threshold switch.
Preferably, in addition to be arranged on along along the small water tank for the flow direction head end that catchments, for directly will life it is useless The water receiving tank that water is imported into the water storage tank of toilet bowl by the drainpipe, and the top of the water receiving tank and closestool storage The top of water tank is located at same horizontal line.
Sanitary wastewater recovery system provided by the present invention, including for collecting the water tank of sanitary wastewater, water tank bottom is set There is delivery port, delivery port is connected with one end of drainpipe, and the other end of drainpipe is connected with water storage tank of toilet bowl, and water tank bottom Portion is higher than water storage tank of toilet bowl bottom, so that the sanitary wastewater in water tank is flowed into water storage tank of toilet bowl by drainpipe.In application originally When inventing provided sanitary wastewater recovery system, sanitary wastewater is flowed in water tank, and water tank bottom sets delivery port and drainpipe, And drainpipe is connected with water storage tank of toilet bowl, because water tank bottom is higher than water storage tank of toilet bowl bottom, in this way, in sanitary wastewater itself weight Under power and liquid level atmospheric pressure collective effect, the sanitary wastewater in water tank is quickly added in water storage tank of toilet bowl, without outside Power-assisted, effectively collects sanitary wastewater, and can supplement water storage tank of toilet bowl hydraulic pressure rapidly, and meeting closestool needs the pressure of water, Meanwhile, sanitary wastewater recovery system internal structure is simple, it is easy to production and processing manufacture.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of overall structure diagram of embodiment provided by the present invention;
Fig. 2 is the water tank bottom structural representation shown in Fig. 1;
Fig. 3 is the cisten mechanism schematic diagram shown in Fig. 1;
Fig. 4 is the small cisten mechanism schematic diagram shown in Fig. 2;
Fig. 5 is water receiving tank concrete structure schematic diagram.
Wherein, in Fig. 1-Fig. 5:
Water tank -1, delivery port -101, overfall -102, running water water inlet -103, blowoff valve -104, ball-cock assembly Switch -105, check valve -106, deflector -107, drainpipe -2, water storage tank of toilet bowl -3, water receiving tank -4.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is refer to, Fig. 1 is a kind of overall structure diagram of embodiment provided by the present invention.
In a kind of embodiment provided by the present invention, sanitary wastewater recovery system mainly includes water tank 1, draining Pipe 2 and water storage tank of toilet bowl 3.
Wherein, the bottom of water tank 1 is provided with delivery port 101, and delivery port 101 is connected with one end of drainpipe 2, and drainpipe 2 The other end is connected with water storage tank of toilet bowl 3, and the bottom of water tank 1 is higher than the bottom of water storage tank of toilet bowl 3, so that the life in water tank 1 is given up Water is flowed into water storage tank of toilet bowl 3 by drainpipe 2.
Specifically, in application sanitary wastewater recovery system provided by the present invention, sanitary wastewater is flowed in water tank 1, water The bottom of case 1 sets delivery port 101 and drainpipe 2, and drainpipe 2 is connected with water storage tank of toilet bowl 3, because the bottom of water tank 1 is higher than horse Bucket storage tank 3 bottom, in this way, under sanitary wastewater self gravitation and liquid level atmospheric pressure collective effect, by the life in water tank 1 Waste water is quickly added in water storage tank of toilet bowl 3, without external impetus auxiliary, effectively collects sanitary wastewater, and can mend rapidly The hydraulic pressure of water storage tank of toilet bowl 3 is filled, meeting closestool needs the pressure of water.
Fig. 2 and Fig. 3 are refer to, Fig. 2 is the polycrystalline substance schematic diagram of water tank 1 shown in Fig. 1;Fig. 3 is the water tank 1 shown in Fig. 1 Structural representation.Wherein, the direction of arrow is the direction of flowing of catchmenting
It is the water supply effect of water storage tank of toilet bowl 3 to optimize water tank 1 in above-described embodiment, water tank 1 is designed as multiple independences Small water tank composition, its arrangement mode can be uniform for longitudinal direction or laterally uniform, or direction array is set in length and breadth, small water tank Quantity is at two or more, and the top of small water tank is opening-like, and small water tank bottom is provided with delivery port 101, and adjacent Two small water tanks opening at connection wall on be provided with the deflector 107 of continuity, the deflector 107 makes each small water tank tool There is the delivery port continued successively, waste water is first filled with first small water tank, that is, the corresponding small water tank of hand washing sink discharge outlet, then Acted on by deflector 107, catchment, it is ensured that sequentially pour water, that is to say by suitable into the small water tank closest to lowest part successively Sequence is successively around the full small water tank of stream, and the bottom of each small water tank is communicated to the water inlet of the cistern of closestool by delivery port, When rushing closestool, the small water tank work of peak level, other are standby, by independent small cisten mechanism, can make the waste water of collection Hydraulic pressure closestool hydraulic demand is met in the case of less water, unnecessary water is discharged into the small water tank closed on, is filled with successively Multiple small water tanks, it is ensured that in the case of different collecting water from runoff, the hydraulic pressure in small water tank remains the demand for meeting closestool hydraulic pressure Situation, the water of water storage tank of toilet bowl 3 after the completion of closet flushing, can be filled rapidly.
Further, check valve 106 is provided with below each small water tank, makes each each self-sustaining of small water tank oneself Water in hydraulic pressure, small water tank can only be discharged by delivery port 101, it is impossible to intake, will not passed through between water tank by delivery port 101 Delivery port 101 and the diconnected of drainpipe 2.
Further, after whole small water tanks all collects full water, unnecessary water flows to drainage pipeline by gap 102 In, the floating pollutant particularly in waste water can be discharged in sewer by gap 102, will not block closestool and water tank Pipeline.
Due to there may be sedimentation impurity in sanitary wastewater, if irregularly removed, sewage taste may be caused big.It is based on This, settles the blowoff valve 104 of impurity in each small water tank bottom is respectively provided with for waste waste, can by opening blowoff valve 104 So that the sedimentation impurity of each small water tank bottom quickly to be discharged, the purpose of removing is reached.
So that small water tank quantity is nine as an example, certainly, small water tank quantity can be two, five, 12 etc., also may be used It is designed according to actual needs.Specifically, the first small water tank is located at the underface of hand washing sink discharge outlet, the life of hand washing sink discharge Waste water living is first fallen in the first small water tank, and 3/4ths sides of the first small water tank are stopped by deflector, is to open in one side Mouth shape, after the first small water tank collection full water, unnecessary water is flowed in the second small water tank by relatively low opening, the second small water tank Upper end is connected with the first small water tank and the 3rd small water tank junction, and after the water in the second small water tank is filled with, unnecessary water can lead to Cross the second small water tank to accept to the 3rd small water tank, and then fill with each small water tank successively, hand washing sink is less with water, the waste water of generation When less, it is concentrated mainly in the first small water tank, because the first small water tank volume is smaller, it is ensured that the height catchmented, Jin Erbao Having demonstrate,proved closestool needs the pressure of water., just can be according to namely waste water, first toward catchmenting in the first small water tank, the only first small water tank is filled with after water It is secondary to transmit waste water to the small water tank closed on, so, in the case where ensureing overall larger collecting space, pass through less independence Space, can meet the high water level requirement of low wash water, and then can meet the hydraulic demand of water storage tank of toilet bowl 3, you can fill rapidly Water in water storage tank of toilet bowl 3, changes a traditional flood box mode, and when the only first small water tank collection has waste water, first is small Water tank is supplied water by delivery port to water storage tank of toilet bowl 3, when the first small water tank and the second small water tank collect and have waste water, if the two Water level is identical, then is supplied water simultaneously to water storage tank of toilet bowl 3, if the water level of the second small water tank is less than the first small water tank, first is small Water tank first supplies water to water storage tank of toilet bowl 3, after then maintaining an equal level with the first small water tank level, is supplied water together to water storage tank of toilet bowl 3, until Three's water level is flushed, similarly, when also collection has water in the 3rd small water tank, if itself and the first small water tank and the water of the second small water tank Position is relatively low, then the first small water tank and the second small water tank first supply water to water storage tank of toilet bowl 3, until with the first small water tank and the second small water After case maintains an equal level, supplied water together to water storage tank of toilet bowl 3, until four water levels are flushed, the like, according to each small water tank in water tank Water storage collective or part supplied water to water storage tank of toilet bowl 3.
Fig. 4 is refer to, Fig. 4 is the small cisten mechanism schematic diagram shown in Fig. 2.
When living wastewater water shortage in water tank 1, namely water level are low, it is impossible to meet closestool and use.Therefore, on In a kind of preferred embodiment of one small water tank, a running water inlet 103 can be set on the first small water tank, and in running water Ball float threshold switch 105 is set at import 103, i.e., when not having water in the first small water tank or when water level is relatively low, passes through running water Automatic water supplement, water level are until reach the height that ball float threshold switch 105 is closed, it is ensured that demand of normally washing by water.
Fig. 5 is refer to, Fig. 5 is the concrete structure schematic diagram of water receiving tank 4.
Further, water receiving tank 4 can also be set up in the first small water tank, what the water receiving tank 4 directly discharged hand washing sink Sanitary wastewater, is imported into water storage tank of toilet bowl 3 by household waste water collecting by coupled drainpipe 2, and the water receiving tank 4 Highly it is less than the top of water tank 1.When water level meets peak level in water storage tank of toilet bowl 3, the sanitary wastewater of hand washing sink discharge is again Overflowed to from water receiving tank in the first small water tank.So, it is possible to realize directly, effectively collect sanitary wastewater, and can be rapid The hydraulic pressure of water storage tank of toilet bowl 3 is supplemented, meeting closestool needs the pressure of water.
In summary, the sanitary wastewater recovery system sanitary wastewater recovery system that the present embodiment is provided mainly includes water tank 1st, drainpipe 2 and water storage tank of toilet bowl 3.Wherein, the bottom of water tank 1 is provided with delivery port 101, and one end of delivery port 101 and drainpipe 2 connects Lead to, and the other end of drainpipe 2 is connected with water storage tank of toilet bowl 3, and the bottom of water tank 1 is higher than the bottom of water storage tank of toilet bowl 3, so that water Sanitary wastewater in case 1 is flowed into water storage tank of toilet bowl 3 by drainpipe 2.Reclaimed in application sanitary wastewater provided by the present invention During system, sanitary wastewater is flowed in water tank 1, and the bottom of water tank 1 sets delivery port 101 and drainpipe 2, and drainpipe 2 is stored up with closestool Water tank 3 is connected, because the bottom of water tank 1 is higher than the bottom of water storage tank of toilet bowl 3, in this way, in sanitary wastewater self gravitation and liquid level air Under pressure collective effect, the sanitary wastewater in water tank 1 is quickly added in water storage tank of toilet bowl 3, without external impetus auxiliary, had Sanitary wastewater is collected on effect ground, and can supplement the hydraulic pressure of water storage tank of toilet bowl 3 rapidly, and meeting closestool needs the pressure of water, it is ensured that it is received The sanitary wastewater of collection is all discharged in water storage tank of toilet bowl 3, no stagnant water, is all circulating water, is not in that water fouls, becomes sour feelings Condition, meanwhile, sanitary wastewater recovery system internal structure is simple, it is easy to production and processing manufacture, with splendid application value.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention. A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope caused.

Claims (8)

1. a kind of sanitary wastewater recovery system, it is characterised in that including the water tank (1) for collecting sanitary wastewater, the water tank (1) bottom is provided with delivery port (101), and the delivery port (101) connects with one end of drainpipe (2), and the drainpipe (2) The other end is connected with water storage tank of toilet bowl (3), and the water tank (1) bottom is higher than the water storage tank of toilet bowl (3) bottom, so that institute The sanitary wastewater stated in water tank (1) is flowed into the water storage tank of toilet bowl (3) by the drainpipe (2).
2. sanitary wastewater recovery system according to claim 1, it is characterised in that the water tank (1) includes some small water Case, and a side of each small water tank opens up an opening, so that after the small water tank collection full water, unnecessary water is through the opening Flow in the adjacent small water tank.
3. sanitary wastewater recovery system according to claim 2, it is characterised in that each small water tank bottom is provided with Delivery port (101), and one end with the drainpipe (2) connects.
4. sanitary wastewater recovery system according to claim 3, it is characterised in that also including being arranged on delivery port (101) Place, the check valve (106) for preventing the interior sanitary wastewater backflow of the drainpipe (2).
5. sanitary wastewater recovery system according to claim 4, it is characterised in that also including being arranged on along the flowing side that catchments Overfall (102) into the small water tank of least significant end, for suspended impurity in waste waste, and the overfall (102) position Less than the top of the water tank (1).
6. sanitary wastewater recovery system according to claim 5, it is characterised in that also including being arranged on each small water tank Bottom, the blowoff valve (104) for settling impurity in waste waste, and the discharge outlet and blow-off line of the blowoff valve (104) Connection.
7. sanitary wastewater recovery system according to claim 6, it is characterised in that also including being arranged on along the flowing side that catchments Running water water inlet (103) into the small water tank of head end, for water in subsidiary water tank, and be arranged on it is described originally Water water inlet (103) end, for controlling to be automatically replenished the ball float threshold switch (105) of quantity of water in water tank.
8. sanitary wastewater recovery system according to claim 7, it is characterised in that also including being arranged on along the flowing side that catchments Into the small water tank of head end, for directly importeding into sanitary wastewater in the water storage tank of toilet bowl (3) by the drainpipe (2) Water receiving tank (4), and the top of top and the water storage tank of toilet bowl (3) of the water receiving tank (4) is located at same horizontal line.
CN201710173835.0A 2017-03-22 2017-03-22 A kind of sanitary wastewater recovery system Pending CN107060005A (en)

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CN201710173835.0A CN107060005A (en) 2017-03-22 2017-03-22 A kind of sanitary wastewater recovery system

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Application Number Priority Date Filing Date Title
CN201710173835.0A CN107060005A (en) 2017-03-22 2017-03-22 A kind of sanitary wastewater recovery system

Publications (1)

Publication Number Publication Date
CN107060005A true CN107060005A (en) 2017-08-18

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CN201710173835.0A Pending CN107060005A (en) 2017-03-22 2017-03-22 A kind of sanitary wastewater recovery system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112758879A (en) * 2021-01-15 2021-05-07 成都市新都区是几个商贸有限公司 Waste water collecting device capable of automatically replacing barrel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2020824A1 (en) * 1989-09-28 1991-03-29 Bradford G. Baruh Arrangement for reusing gray water
TWM265405U (en) * 2003-06-18 2005-05-21 Ching-Hua Li Environmental water saving toilet apparatus
CN200946314Y (en) * 2006-07-19 2007-09-12 蒙朝干 Water-saving flushing cistern
CN202466704U (en) * 2012-03-01 2012-10-03 冯志刚 Domestic wastewater recycling system
CN202559444U (en) * 2012-04-14 2012-11-28 于双辰 Recycling device for house waste water
CN206646589U (en) * 2017-03-22 2017-11-17 鲍建中 A kind of sanitary wastewater recovery system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2020824A1 (en) * 1989-09-28 1991-03-29 Bradford G. Baruh Arrangement for reusing gray water
TWM265405U (en) * 2003-06-18 2005-05-21 Ching-Hua Li Environmental water saving toilet apparatus
CN200946314Y (en) * 2006-07-19 2007-09-12 蒙朝干 Water-saving flushing cistern
CN202466704U (en) * 2012-03-01 2012-10-03 冯志刚 Domestic wastewater recycling system
CN202559444U (en) * 2012-04-14 2012-11-28 于双辰 Recycling device for house waste water
CN206646589U (en) * 2017-03-22 2017-11-17 鲍建中 A kind of sanitary wastewater recovery system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112758879A (en) * 2021-01-15 2021-05-07 成都市新都区是几个商贸有限公司 Waste water collecting device capable of automatically replacing barrel
CN112758879B (en) * 2021-01-15 2023-03-28 华东理工大学工程设计研究院有限公司 Waste water collecting device capable of automatically replacing barrel

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Application publication date: 20170818

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