CN104193020B - A kind of water purifier with intelligent water-saving function - Google Patents
A kind of water purifier with intelligent water-saving function Download PDFInfo
- Publication number
- CN104193020B CN104193020B CN201410454726.2A CN201410454726A CN104193020B CN 104193020 B CN104193020 B CN 104193020B CN 201410454726 A CN201410454726 A CN 201410454726A CN 104193020 B CN104193020 B CN 104193020B
- Authority
- CN
- China
- Prior art keywords
- water
- filter core
- valve
- reverse osmosis
- main control
- Prior art date
- 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.)
- Active
Links
Abstract
The invention discloses a kind of water purifier with intelligent water-saving function, the water purifier body of tank is provided with in comprising, be provided with water-in and water outlet, reverse osmosis filter is provided with in water purifier body, water inlet pipe is connected with between reverse osmosis filter and water-in, rising pipe is connected with between itself and water outlet, water inlet pipe is provided with water intaking valve, tank is connected with rising pipe, reverse osmosis filter is also provided with condensed water delivery pipe, this condensed water delivery pipe is provided with bleed valve, backflow branch road is connected with between condensed water delivery pipe and water inlet pipe, this backflow branch road is provided with reverse flow valve, also be provided with main control chip in water purifier body, this main control chip be connected with TDS sensor, TDS sensor is placed in exit end, main control chip and water intaking valve, bleed valve and the reverse flow valve control linkage of backflow branch road.Its advantage is: structure is simple, easy to use, can control condensed water discharge by condensed water recycle and automatically.
Description
Technical field
The present invention relates to water purifier and manufacture field, especially a kind of water purifier with intelligent water-saving function.
Background technology
Water dispenser has become application drinking equipment very widely in house, office and public place.Water dispenser was mainly with bottled water as former water in the past, and when summer, water consumption was larger, usually because send, water conservancy project people is too busy often can not be sent water in time and affect the normal use of water dispenser.Along with the continuous progress of water dispenser technology, nowadays water purifier progressively instead of the water dispenser with bottled water.Water purifier directly accesses municipal water use, and by the impurity in the purifier removal water of its inside and peculiar smell, to reach standard for drinking, use very convenient, use cost is low.
Water purifier develops into now, no matter is filtration process, structure construction, or control techniques, use popularization, is obtained for very large development and lifting.Water purifier changes the water way of people, facilitates healthy living, is of great significance human development tool.
With reverse osmosis membrane in existing filtration unit, namely the filter effect of RO film is best.In reverse osmosis membrane water process, be take pressure difference as impellent, from former water, removing foreign matter obtains the membrane separation technique of water purification.Apply pressure to the former water of film side, when pressure exceedes its osmotic pressure, former water can make inverse osmosis against the direction of naturally osmotic; In reverse osmosis process, the impurity in former water cannot be separated by reverse osmosis membrane, and the former water through reverse osmosis membrane is then made into water purification.But in water process processed, Yuan Shui side can produce concentrated solution, i.e. condensed water.
Condensed water cannot be drunk, and often directly drains, and the discharge of this part condensed water will cause a large amount of wastes of water resources; And different areas are because of the difference of water quality, the condensed water produced is also different, and therefore need to condensed water discharge than adjusting, therefore the structure of existing reverse osmosis membrane water purifier is further improved.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provides a kind of water purifier with intelligent water-saving function that structure is simple, easy to use, condensed water recycle also can be controlled automatically condensed water discharge.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of water purifier with intelligent water-saving function, the water purifier body of tank is provided with in comprising, water purifier body is provided with water-in and water outlet, wherein, reverse osmosis filter is provided with in water purifier body, water inlet pipe is connected with between reverse osmosis filter and described water-in, rising pipe is connected with between itself and described water outlet, described water inlet pipe is provided with water intaking valve, tank is connected with described rising pipe, reverse osmosis filter is also provided with condensed water delivery pipe, this condensed water delivery pipe is provided with bleed valve, backflow branch road is connected with between condensed water delivery pipe and water inlet pipe, this backflow branch road is provided with reverse flow valve, also be provided with main control chip in water purifier body, this main control chip be connected with TDS sensor, TDS sensor is placed in the exit end of backflow branch road, main control chip and water intaking valve, bleed valve and reverse flow valve control linkage, the opening and closing of the TDS value control discharge valve 43a that main control chip 5 detects according to TDS sensor 51 and reverse flow valve 44a, makes TDS value reach running balance.
The technical measures optimized also comprise:
The upstream of above-mentioned reverse osmosis membrane filter element is provided with preposition Combination filter element, this preposition Combination filter element by the first preposition filter core and the second preposition filter core in series.
Above-mentioned first preposition filter core and the second preposition filter core are followed successively by the cotton filter core of PP and active carbon filter core.
The first rearmounted filter core is provided with between above-mentioned reverse osmosis filter and described tank.
Above-mentioned first rearmounted filter core is granulated active carbon filter core.
Be provided with between above-mentioned tank and water outlet for preventing second of secondary pollution the rearmounted filter core.
Above-mentioned second rearmounted filter core is granulated active carbon filter core.
Above-mentioned backflow branch road is provided with the first check valve.
The second check valve is provided with between above-mentioned first rearmounted filter core and described tank.
The entrance end of above-mentioned reverse osmosis filter arranges topping-up pump.
A kind of water purifier with intelligent water-saving function of the present invention, the water purifier body of tank and reverse osmosis filter is provided with in comprising, by arranging a backflow branch road at the condensed water delivery pipe of reverse osmosis filter, condensed water is back to water inlet pipe to recycle, thus decreases the waste of water resources; And be also provided with main control chip at water purifier body, this main control chip is connected with TDS sensor, TDS sensor is placed in the exit end of backflow branch road, for detecting the TDS value entering water in reverse osmosis filter advance water pipe, main control chip is by the opening and closing according to measured TDS value control discharge valve and reverse flow valve.This water purifier is by main control chip control discharge valve and reverse flow valve opening and closing, the quantity discharged of condensed water is controlled by both cooperations, the TDS value of the water in water purifier is made to reach running balance, under the prerequisite ensureing reverse osmosis filter filter effect, reduce the discharge of condensed water as much as possible, make water resources obtain fully, reasonably utilizing.
In addition, the upstream of this water purifier reverse osmosis membrane filter element is provided with preposition Combination filter element, this this preposition Combination filter element by the first preposition filter core and the second preposition filter core in series.And the first preposition filter core and the second preposition filter core adopt different cartridge combination, utilize the characteristic of different filter core, to reach better prefilter effect, reduce the filtration burden of reverse osmosis membrane filter element, improve the work-ing life of reverse osmosis membrane filter element.
Be provided with the first rearmounted filter core between reverse osmosis filter and described tank, the water filtered through reverse osmosis filter is filtered again, the impurity of water can be removed more up hill and dale, make the water in inflow tank purer.
And the arrange between tank and water outlet second rearmounted filter core, water tank being flowed to water outlet filters, and effectively can avoid the secondary pollution of flowing out from tank, ensures the water quality flowing out water from water outlet.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Be illustrated in figure 1 structural representation of the present invention,
Reference numeral is wherein: water purifier body 1, water-in 11, water outlet 12, tank 2, reverse osmosis filter 3, water inlet pipe 41, water intaking valve 41a, rising pipe 42, condensed water delivery pipe 43, bleed valve 43a, backflow branch road 44, reverse flow valve 44a, the first check valve 44b, main control chip 5, rearmounted filter core 63, the second check valve 63a of TDS sensor 51, first preposition filter core the 61, second preposition filter core 62, first, the second rearmounted filter core 64, topping-up pump 7.
As shown in Figure 1,
A kind of water purifier with intelligent water-saving function, the water purifier body 1 of tank 2 is provided with in comprising, water purifier body 1 is provided with water-in 11 and water outlet 12, wherein, reverse osmosis filter 3 is provided with in water purifier body 1, water inlet pipe 41 is connected with between reverse osmosis filter 3 and described water-in 11, rising pipe 42 is connected with between itself and described water outlet 12, described water inlet pipe 41 is provided with water intaking valve 41a, tank 2 is connected with described rising pipe 42, reverse osmosis filter 3 is also provided with condensed water delivery pipe 43, this condensed water delivery pipe 43 is provided with bleed valve 43a, the branch road 44 that refluxes is connected with between condensed water delivery pipe 43 and water inlet pipe 41, this backflow branch road 44 is provided with reverse flow valve 44a, also be provided with main control chip 5 in water purifier body 1, this main control chip 5 be connected with the exit end that TDS sensor 51, TDS sensor 51 is placed in backflow branch road 44, main control chip 5 and water intaking valve 42a, bleed valve 43a and reverse flow valve 44a control linkage.
TDS sensor 51 is for detecting the TDS value of water, and TDS value refers to the number of total dissolved solids in water, and unit of measure is mg/litre, and it shows to be dissolved with how many milligrams of soluble solids in 1 premium on currency.TDS value is higher, represents that the impurity contained in water is more.The TDS value size of water to be filtered, not only can affect the filter quality of reverse osmosis filter 3, also can affect the work-ing life of reverse osmosis filter 3.
In embodiment, the upstream of reverse osmosis membrane filter element 3 is provided with preposition Combination filter element, this preposition Combination filter element by the first preposition filter core 61 and the second preposition filter core 62 in series.
In embodiment, the first preposition filter core 61 and the second preposition filter core 62 are followed successively by the cotton filter core of PP and active carbon filter core.
The cotton filter core of PP has another name called fusion-jet type PP filter core, adopts nonpoisonous and tasteless polypropylene particles, the tubulose filter core that core is shaped through heating and melting, spray silk, traction, acceptance and makes; It effectively can remove the various granule foreigns in institute's filter liquide, has multi-layer type depth structure, and pollutant holding capability is large, is suitable for the preceding processing stages of purification of water quality.Active carbon filter core take gac as main raw material, effectively can remove the organism, particulate, iron rust, chlorine residue, peculiar smell etc. in water.Cotton for PP filter core and active carbon filter core are connected as the preposition Combination filter element of reverse osmosis filter 3, utilizes the characteristic of two kinds of different filter cores, remove the impurity in water and peculiar smell, to reach good pre-process effect.The setting of preposition Combination filter element can reduce the filtration burden of reverse osmosis membrane filter element 3, improves the work-ing life of reverse osmosis membrane filter element 3, from the use cost of the maintenance cost and water purifier that to a certain degree reduce equipment.
In embodiment, between reverse osmosis filter 3 and described tank 2, be provided with the first rearmounted filter core 63.
In embodiment, the first rearmounted filter core 63 is granulated active carbon filter core.
In embodiment, be provided with between tank 2 and water outlet 12 for preventing second of secondary pollution the rearmounted filter core 64.
In embodiment, the second rearmounted filter core 64 is granulated active carbon filter core.
The effect of the first rearmounted filter core 63 is again filtered the water filtered through reverse osmosis filter 3, can remove the impurity of water more up hill and dale, make the water in inflow tank 2 purer.The effect of the second rearmounted filter core 64 is filtered the water that tank 2 flows to water outlet 12, effectively can avoid the secondary pollution of flowing out from tank 2, ensure the water quality flowing out water from water outlet 12.
Granulated active carbon filter core adopts nonpoisonous and tasteless efficient cocoanut active charcoal and coal mass active carbon to make main body; be aided with food grade materials tackiness agent; through special process machine-shaping, it effectively can remove organism in water, chlorine residue and other radioactive substances, can also remove the peculiar smell in water.Its surface-area is large, and pollutant holding capability is large, long service life.
In embodiment, backflow branch road 44 is provided with the first check valve 44b; The setting of the first check valve 44b can water reverse flow in anti-backflow branch road 44 to reverse osmosis membrane filter element 3.
In embodiment, between the first rearmounted filter core 63 and described tank 2, be provided with the second check valve 63a; The setting of the second check valve 63a can prevent the water reverse flow of tank 2 to the first rearmounted filter core 63.
In embodiment, the entrance end of reverse osmosis filter 3 arranges topping-up pump 7; The more enough increase hydraulic pressure of setting of topping-up pump 7, makes the operation of current in whole water purifier more smooth and easy.
Principle of work:
Water to be filtered enters in water inlet pipe 41 from water-in 11, then through the filtration of the first preposition filter core 61 and the second preposition filter core 62, pre-process is carried out to water successively, remove a part of impurity and the peculiar smell of water, again through the depth type filtration of reverse osmosis filter 3, impurity in further removal water and peculiar smell, to reach the object purified water.
Water after reverse osmosis filter 3 purifies flows in tank 2 stand-by after the filtration again of the first rearmounted filter core 63.When water outlet 12 is opened, the water of tank 2 flows to rising pipe 42 through the second rearmounted filter core 64, and flows out from water outlet 12.The water flowed out effectively can prevent secondary pollution through the filtration of the second rearmounted filter core 64.
Reverse osmosis filter 3 purifies the condensed water part produced and discharges through condensed water delivery pipe 43, and remainder is recycled before backflow branch road 44 is back to the preposition Combination filter element of rising pipe 42.Water purifier body 1 is provided with main control chip 5, and this main control chip 5 is connected with the exit end that TDS sensor 51, TDS sensor 51 is placed in backflow branch road 44, namely the TDS value of entrance end to water of preposition Combination filter element carries out Real-Time Monitoring.The TDS value detected is transferred to main control chip 5 by TDS sensor 51, the size control discharge valve 43a of main control chip 5 according to obtained TDS value and the opening and closing of reverse flow valve 44a.
When detecting that TDS value is less, when namely reaching the lower value of water purifier setting, the opening time of emissions reduction valve 43a is controlled by main control chip 5, and open reverse flow valve 44a, a small amount of condensed water is discharged, and a large amount of condensed water is recycled, and reduces the quantity discharged of condensed water through backflow branch road 44, thus reduce the waste of water resources, water resources is fully used.After condensed water refluxes in a large number and utilizes, the TDS value in water raises, and when TDS value is larger, when namely reaching the higher limit of water purifier setting, will affect the filter effect of reverse osmosis filter 3, and the water that reverse osmosis filter 3 filters TDS value large for a long time can cause damage; Now, main control chip 5 controls the opening time increasing bleed valve 43a, and closing volume valve 44a, temporarily stop the backflow of condensed water, TDS value is reduced, so circulates.Above-mentioned lower value and higher limit can carry out adjusting, setting according to the difference of water quality.
The opening and closing of the TDS value control discharge valve 43a that main control chip 5 detects according to TDS sensor 51 and reverse flow valve 44a, thus make the TDS value of water reach running balance, under the prerequisite ensureing the normal work of reverse osmosis filter 3 and filter effect, reduce the waste of water resources, make that water resources obtains fully, Appropriate application.
Most preferred embodiment of the present invention is illustrated, and the various change made by those of ordinary skill in the art or remodeling all can not depart from the scope of the present invention.
Claims (1)
1. one kind has the water purifier of intelligent water-saving function, the water purifier body (1) of tank (2) is provided with in comprising, described water purifier body (1) is provided with water-in (11) and water outlet (12), reverse osmosis filter (3) is provided with in described water purifier body (1), water inlet pipe (41) is connected with between described reverse osmosis filter (3) and described water-in (11), rising pipe (42) is connected with between itself and described water outlet (12), described tank (2) is connected with described rising pipe (42), described reverse osmosis filter (3) is also provided with condensed water delivery pipe (43), this condensed water delivery pipe (43) is provided with bleed valve (43a), the branch road (44) that refluxes is connected with between described condensed water delivery pipe (43) and water inlet pipe (41), this backflow branch road (44) is provided with reverse flow valve (44a), be provided with for preventing second of secondary pollution the rearmounted filter core (64) between described tank (2) and water outlet (12), described second rearmounted filter core (64) is granulated active carbon filter core, described backflow branch road (44) is provided with the first check valve (44b), it is characterized in that: described water inlet pipe (41) is provided with water intaking valve (41a), main control chip (5) is also provided with in described water purifier body (1), this main control chip (5) is connected with TDS sensor (51), described TDS sensor (51) is placed in the exit end of backflow branch road (44), described main control chip (5) and water intaking valve (42a), bleed valve (43a) and reverse flow valve (44a) control linkage, the TDS value detected is transferred to main control chip (5) by TDS sensor (51), the opening and closing of TDS value control discharge valve (43a) that described main control chip (5) detects according to TDS sensor (51) and reverse flow valve (44a), when detect TDS value less reach water purifier setting lower value time, the opening time of emissions reduction valve (43a) is controlled by main control chip (5), and open reverse flow valve (44a), a small amount of condensed water is discharged, and a large amount of condensed water is recycled through backflow branch road (44), thus reduce the waste of water resources, water resources is fully used, when TDS value reaches more greatly the higher limit of water purifier setting, main control chip (5) controls the opening time increasing bleed valve (43a), and closing volume valve (44a), the backflow of temporary transient stopping condensed water, TDS value is reduced, circulation like this, makes TDS value reach running balance, the upstream of described reverse osmosis membrane filter element (3) is provided with preposition Combination filter element, this preposition Combination filter element by the first preposition filter core (61) and the second preposition filter core (62) in series, described first preposition filter core (61) and the second preposition filter core (62) are followed successively by the cotton filter core of PP and active carbon filter core, the first rearmounted filter core (63) is provided with between described reverse osmosis filter (3) and described tank (2), described first rearmounted filter core (63) is granulated active carbon filter core, the second check valve (63a) is provided with between described first rearmounted filter core (63) and described tank (2), the entrance end of described reverse osmosis filter (3) arranges topping-up pump (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454726.2A CN104193020B (en) | 2014-09-09 | 2014-09-09 | A kind of water purifier with intelligent water-saving function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454726.2A CN104193020B (en) | 2014-09-09 | 2014-09-09 | A kind of water purifier with intelligent water-saving function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104193020A CN104193020A (en) | 2014-12-10 |
| CN104193020B true CN104193020B (en) | 2015-11-04 |
Family
ID=52078443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410454726.2A Active CN104193020B (en) | 2014-09-09 | 2014-09-09 | A kind of water purifier with intelligent water-saving function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104193020B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556303A (en) * | 2014-12-26 | 2015-04-29 | 上海璞玉环保科技有限公司 | Water-saving type reverse osmosis membrane water purifier |
| CN108218002B (en) | 2016-12-01 | 2022-12-02 | 滨特尔民用水处理有限责任公司 | Water filtration system and method |
| CN108623024B (en) * | 2017-03-22 | 2023-10-31 | 佛山市顺德区美的饮水机制造有限公司 | Water purifier and water purification system |
| CN108619912A (en) * | 2017-03-22 | 2018-10-09 | 佛山市顺德区美的饮水机制造有限公司 | Purifier and water purifier |
| CN108793325A (en) * | 2017-04-27 | 2018-11-13 | 佛山市顺德区美的饮水机制造有限公司 | Water cleaning systems |
| CN108793326A (en) * | 2017-04-27 | 2018-11-13 | 佛山市顺德区美的饮水机制造有限公司 | Water cleaning systems and its control method |
| CN109095559B (en) * | 2017-06-20 | 2024-03-08 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2875574Y (en) * | 2006-02-17 | 2007-03-07 | 佳尼特(上海)纯水设备有限公司 | Intermittent drain water saving type reverse osmosis water purification device |
| CN101302049A (en) * | 2008-06-19 | 2008-11-12 | 黄彪 | Water-saving pure water making system |
| JP2010149030A (en) * | 2008-12-24 | 2010-07-08 | Duskin Co Ltd | Ro water purifier |
| CN202139121U (en) * | 2011-07-19 | 2012-02-08 | 上海奔泰水处理设备有限公司 | Water-purifying machine with reverse osmosis membrane |
| CN203700062U (en) * | 2014-03-03 | 2014-07-09 | 山东中宇环保科技有限公司 | Full-automatic household water purification machine with concentrated water backflow function |
| CN203700063U (en) * | 2014-03-03 | 2014-07-09 | 山东中宇环保科技有限公司 | Household water purification machine with concentrated water backflow function |
| CN103951013A (en) * | 2014-05-21 | 2014-07-30 | 珠海格力电器股份有限公司 | Reverse osmosis water purification machine and reverse osmosis water purification system |
| CN204039166U (en) * | 2014-09-09 | 2014-12-24 | 浙江沁园水处理科技有限公司 | A kind of water purifier with intelligent water-saving function |
-
2014
- 2014-09-09 CN CN201410454726.2A patent/CN104193020B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2875574Y (en) * | 2006-02-17 | 2007-03-07 | 佳尼特(上海)纯水设备有限公司 | Intermittent drain water saving type reverse osmosis water purification device |
| CN101302049A (en) * | 2008-06-19 | 2008-11-12 | 黄彪 | Water-saving pure water making system |
| JP2010149030A (en) * | 2008-12-24 | 2010-07-08 | Duskin Co Ltd | Ro water purifier |
| CN202139121U (en) * | 2011-07-19 | 2012-02-08 | 上海奔泰水处理设备有限公司 | Water-purifying machine with reverse osmosis membrane |
| CN203700062U (en) * | 2014-03-03 | 2014-07-09 | 山东中宇环保科技有限公司 | Full-automatic household water purification machine with concentrated water backflow function |
| CN203700063U (en) * | 2014-03-03 | 2014-07-09 | 山东中宇环保科技有限公司 | Household water purification machine with concentrated water backflow function |
| CN103951013A (en) * | 2014-05-21 | 2014-07-30 | 珠海格力电器股份有限公司 | Reverse osmosis water purification machine and reverse osmosis water purification system |
| CN204039166U (en) * | 2014-09-09 | 2014-12-24 | 浙江沁园水处理科技有限公司 | A kind of water purifier with intelligent water-saving function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104193020A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104193020B (en) | A kind of water purifier with intelligent water-saving function | |
| CN205613286U (en) | Control wastewater discharge's water preparation system is detected through waste water TDS | |
| CN202379821U (en) | Reverse osmosis water-saving device | |
| CN204039166U (en) | A kind of water purifier with intelligent water-saving function | |
| CN205965523U (en) | Water purifier with reduce pure water TDS value function | |
| CN201473366U (en) | Water-saving type water purification machine | |
| CN205933318U (en) | Take big flux of double pump device, low waste water reverse osmosis water purifier | |
| CN205258174U (en) | Ultrafiltration sewage treatment system | |
| CN202850094U (en) | Household water supply system | |
| CN203946970U (en) | A kind of water purifier with zero release function | |
| CN211141695U (en) | Little effluent disposal system of water bag machine | |
| CN206142935U (en) | Water -saving type water purifier | |
| CN202400917U (en) | Purifying device for car washing circulating water | |
| CN201686571U (en) | Double-core water-saving reverse osmosis water purifier | |
| CN207959370U (en) | Different water supply system | |
| CN208883594U (en) | It is a kind of can automatic scale inhibition household water filter | |
| CN207243579U (en) | A kind of water-saving water purifier with concentrate recirculation device | |
| CN202046948U (en) | Ecological reverse osmosis water treatment machine | |
| CN207973522U (en) | Waste water intelligence recycling device | |
| CN207108696U (en) | A kind of rainwater advanced purification treatment system | |
| CN205258082U (en) | Reverse osmosis water purification system | |
| CN205258151U (en) | Reverse osmosis system | |
| CN106830463A (en) | A kind of rainwater advanced purification treatment system | |
| CN208517190U (en) | A kind of domestic central water purification system | |
| CN207286899U (en) | A kind of solid-liquid separating sewage disposal cleaning equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |