CN106673082A - Efficient domestic sewage separation device - Google Patents
Efficient domestic sewage separation device Download PDFInfo
- Publication number
- CN106673082A CN106673082A CN201611057044.3A CN201611057044A CN106673082A CN 106673082 A CN106673082 A CN 106673082A CN 201611057044 A CN201611057044 A CN 201611057044A CN 106673082 A CN106673082 A CN 106673082A
- Authority
- CN
- China
- Prior art keywords
- filter vat
- rotating shaft
- filter
- water treatment
- treatment box
- 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.)
- Withdrawn
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 44
- 238000000926 separation method Methods 0.000 title abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000004065 wastewater treatment Methods 0.000 claims description 19
- 210000002275 spiral lamina Anatomy 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
- B01D29/356—Self-supporting filtering elements arranged for outward flow filtration open-ended, the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
Abstract
The invention provides an efficient domestic sewage separation device, which comprises a hollow cylindrical sewage treatment tank with a cover plate at the top end, a filter vat, a stirring scraper and a hole cleaning barrel, wherein the filter vat is arranged at the center of the sewage treatment tank, filter holes are uniformly distributed in the side wall of the filter vat, a sundry opening is formed in the bottom of the filter vat and the top end of the filter vat is connected with a first rotating shaft; the first rotating shaft is driven by a first motor; the bottom of the sewage treatment tank is connected with the lower segment of the filter vat through an annular bottom plate which inclines towards the center of the inner side; the stirring scraper is arranged in the filter vat and comprises a second rotating shaft and a spiral plate arranged on the second rotating shaft; the second rotating shaft is driven by a second motor; and the hole cleaning barrel is arranged at one side of the filter vat, the top end is rotationally connected with the cover plate through a third rotating shaft and bumps matched with the filter holes of the filter vat are uniformly distributed on the side wall. The efficient domestic sewage separation device has the advantages that the structure is compact and reasonable, the sewage filter effect is good, insoluble waste sundries can be effectively separated, sundry residues in the filter holes are automatically cleaned and the filtering efficiency of the filter device is ensured.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of efficient sanitary sewage separation device.
Background technology
With the continuous progress of society, and the continuous development of industry, the living environment of the mankind is inevitably destroyed,
The pollution problem of environment has caused the great attention and concern of countries in the world.Sewage disposal is widely used in building, agriculture
The every field such as industry, traffic, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink, also come into more and more common people
Daily life, city domestic sewage is mainly sewage, rubbish, feces that the mankind produce in urban life etc., wherein rubbish
Comprising some plastics in plastic bag, paper and daily life etc., these rubbish enter into sewage disposal with sewage
In device.
At present, the stirring area of existing sewage-treatment plant is substantially what is be provided separately with filtering area on market, device
Floor space is big, and filter efficiency is low, simultaneously because the debris such as rubbish in city domestic sewage are more, usually easily blocks up during filtration
The filtering holes of plug defecator, affect filter efficiency, and long-term to easily cause device damage in the past, maintenance cost is high, and if taking
Labor cleaning's defecator, operates suffering, and cost of labor is high, cures the symptoms, not the disease.
The content of the invention
To solve the above problems, the invention discloses a kind of efficient sanitary sewage separates device.
In order to reach object above, the present invention provides following technical scheme：
A kind of efficient sanitary sewage separates device, it is characterised in that：Including top be provided with cover plate hollow cylindrical waste water treatment box,
Filter vat, curette and borehole cleaning cylinder are stirred, the filter vat is arranged on the center of waste water treatment box, is evenly equipped with the side wall of filter vat
Filter opening, bottom is provided with debris mouth, and top is connected with first rotating shaft, and the first rotating shaft is by being arranged on the of cover plate top center
One Motor drive, the waste water treatment box bottom to the centroclinal annular bottom plate in inner side and filter vat hypomere side wall by connecting
Connect, the curette that stirs is arranged in filter vat, and including the second rotating shaft and the spiral lamina being arranged on from top to bottom in the second rotating shaft,
Second rotating shaft is arranged on the mistake in waste water treatment box by the second Motor drive being arranged on below filter vat, the borehole cleaning cylinder
Lauter tub side, top is rotated with cover plate by the 3rd rotating shaft and is connected, and is evenly equipped with the wall of side and is filtered the filtering holes phase on barrel side wall
The projection of adaptation.
Further, the top of the filter vat is connected by connecting rod with first rotating shaft, the connecting rod at least three
It is individual, and two ends are distributed on respectively in the circumferential direction of filter vat top and first rotating shaft bottom.
Further, the projection is tapered.
Further, it is provided with sealing ring with the contact jaw of filter vat on the annular bottom plate.
Further, feeding mouth is provided with by the first rotating shaft on the top of the waste water treatment box, the feeding mouth was located at
The bung top of lauter tub.
Further, the bottom sidewall of the waste water treatment box is provided with discharging opening.
Compared with prior art, the beneficial effects of the present invention is：The side combined using defecator and agitating device
Formula, rationally, sewage water filtration effect is good for compact conformation；While solable matter in stirring sewage, can effectively cross and separate life
The insoluble rubbish incidental being mingled with sewage, simple structure is effective；Additionally, in filtering holes that can be on automatic clean filtrating equipment
Debris residual, it is ensured that filtering holes it is unobstructed, so as to ensure the filter efficiency of defecator.
Description of the drawings
Fig. 1 is the structural representation that a kind of efficient sanitary sewage of the present invention separates device.
Fig. 2 is that a kind of efficient sanitary sewage of the present invention separates device.
Reference numerals list：
1- waste water treatment boxes, 11- cover plates, 12- feeding mouths, 13- discharging openings, 14- sealing rings, 2- filter vats, 21- filtering holes, 22-
Debris mouth, 3- stirs curette, and the rotating shafts of 31- second, 32- spiral laminas, 4- borehole cleaning cylinders, 41- is raised, 5- first rotating shafts, the motors of 6- first
Drive, 7- annular bottom plates, the motors of 8- second, the rotating shafts of 9- the 3rd, 10- connecting rods.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is further elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the present invention.
As illustrated in fig. 1 and 2, a kind of efficient sanitary sewage separates device, including top is provided with the hollow cylindrical dirt of cover plate 11
Water treatment case 1, filter vat 2, curette 3 and borehole cleaning cylinder 4 are stirred, filter vat 2 is arranged on the center of waste water treatment box 1, the side of filter vat 2
It is evenly equipped with filtering holes 21 on wall, bottom is provided with debris mouth 22, and top is connected with first rotating shaft 5, first rotating shaft 5 is by being arranged on lid
First motor 6 at the top center of plate 11 drives, and the bottom of waste water treatment box 1 is by the centroclinal annular bottom plate 7 in inner side and mistake
The hypomere side wall connection of lauter tub 2, stirs curette 3 and is arranged in filter vat 2, and is arranged on including the second rotating shaft 31 and from top to bottom second
Spiral lamina 32 in rotating shaft 31, the second rotating shaft 31 is driven by the second motor 8 for being arranged on the lower section of filter vat 2.Wherein, sewage disposal
Feeding mouth 12 is provided with by the first rotating shaft 5 on the top of case 1, feeding mouth 12 is located at the bung top of filter vat 2, waste water treatment box 1
Bottom sidewall be provided with discharging opening 13.
Operationally, sewage is entered in filter vat 2 by feeding mouth 12, and filter vat 2 drives rotation by the first motor 6,
Spiral lamina 32 drives rotation by the second motor 8, and in the present embodiment, from terms of depression angle, spiral lamina 32 turns clockwise, and filters
Bucket 2 is in rotate counterclockwise, the direction of rotation of 5 and second rotating shaft of first rotating shaft 31 conversely, thus, sewage is entered into after cartridge filter, by
Spiral lamina 32 is stirred, and solubility rubbish stirring is dissolved in the water body of sewage, the effect of the centrifugal force for then rotating in filter vat 2
Under, the solubility debris in sewage water body are incorporated as sewage together injects to the inwall of waste water treatment box 1 from filtering holes 21
On, finally the inwall along waste water treatment box 1 is flowed into the bottom of waste water treatment box 1, and discharges from discharging opening 13；And it is insoluble
Rubbish incidental, under contrary turning effort of the spiral lamina 32 with filter vat 2, is gradually scraped to the bottom of filter vat 2, so by rotating by 32
Afterwards after the completion of sewage water filtration in filter vat 2, stop filter vat 2 and rotate, the debris mouth 22 of the bottom of filter vat 2 is opened, in spiral shell
Under the rotation of rotating plate 32, the debris of the bottom of filter vat 2 are finally discharged from debris mouth 2.Thus, using defecator and agitating device
The mode for combining, rationally, sewage water filtration effect is good for compact conformation；And while solable matter in stirring sewage, can
Effectively cross and separate the insoluble rubbish incidental being mingled with sanitary sewage, simple structure is effective.
In the present embodiment, the top of filter vat 2 is connected by connecting rod 10 with first rotating shaft 5, and connecting rod 10 is at least
Three, and two ends are distributed on respectively in the circumferential direction of the top of filter vat 2 and the bottom of first rotating shaft 5, so as to ensure that filter vat 2 exists
Under first rotating shaft 5 drives, the stability of rotation.
The present invention, the filter vat 2 that the borehole cleaning cylinder 4 that a kind of efficient sanitary sewage separates device is arranged in waste water treatment box 1
Side, top is rotated with cover plate 11 by the 3rd rotating shaft 9 and is connected, and is evenly equipped with the wall of side and the filtering holes 21 on the side wall of filter vat 2
The projection 41 being adapted, because projection 41 is meshed with filtering holes 21, when filter vat 2 rotates, the synchronous axial system of borehole cleaning cylinder 4, from
And can be on automatic clean filtrating equipment filtering holes 21 in debris residual, it is ensured that filtering holes it is unobstructed, so as to ensure to filter dress
The filter efficiency put. in the present embodiment, raised 41 is tapered.
In order to prevent the sewage that filters out on filter vat 2 from flowing out waste water treatment box from filter vat bottom, on annular bottom plate 7 with
The contact jaw of filter vat 2 is provided with sealing ring 14, can effectively prevent effluent seepage.
Technological means disclosed in the present invention program are not limited only to the technological means disclosed in above-mentioned embodiment, also include
The technical scheme being made up of above technical characteristic combination in any.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of efficient sanitary sewage separates device, it is characterised in that：Cover plate is provided with including top（11）Hollow cylindrical sewage
Treatment box（1）, filter vat（2）, stir curette（3）With borehole cleaning cylinder（4）, the filter vat（2）It is arranged on waste water treatment box（1）In
The heart, filter vat（2）Side wall on be evenly equipped with filtering holes（21）, bottom is provided with debris mouth（22）, and top is connected with first rotating shaft
（5）, the first rotating shaft（5）By being arranged on cover plate（11）First motor at top center（6）Drive, the waste water treatment box
（1）Bottom is by the centroclinal annular bottom plate in inner side（7）With filter vat（2）The wall connection of hypomere side, it is described to stir curette（3）If
Put in filter vat（2）It is interior, and including the second rotating shaft（31）The second rotating shaft is arranged on from top to bottom（31）On spiral lamina（32）,
Second rotating shaft（31）By being arranged on filter vat（2）Second motor of lower section（8）Drive, the borehole cleaning cylinder（4）It is arranged on dirt
Water treatment case（1）Interior filter vat（2）Side, top passes through the 3rd rotating shaft（9）With cover plate（11）Connection is rotated, it is uniform on the wall of side
Have and filter vat（2）Filtering holes on the wall of side（21）The projection being adapted（41）.
2. a kind of efficient sanitary sewage according to claim 1 separates device, it is characterised in that：The filter vat（2）'s
Top passes through connecting rod（10）With first rotating shaft（5）Connection, the connecting rod（10）At least three, and two ends are distributed on respectively
Filter vat（2）Top and first rotating shaft bottom（5）Circumferential direction on.
3. a kind of efficient sanitary sewage according to right wants 1 separates device, it is characterised in that：The projection（41）In cone
Shape.
4. a kind of efficient sanitary sewage according to right wants 1 separates device, it is characterised in that：The annular bottom plate（7）On
With filter vat（2）Contact jaw be provided with sealing ring（14）.
5. a kind of efficient sanitary sewage according to right wants 4 separates device, it is characterised in that：The waste water treatment box（1）
Top first rotating shaft（5）Side is provided with feeding mouth（12）, the feeding mouth（12）Positioned at filter vat（2）Bung top.
6. a kind of efficient sanitary sewage according to right wants 5 separates device, it is characterised in that：The waste water treatment box（1）
Bottom sidewall be provided with discharging opening（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057044.3A CN106673082A (en) | 2016-11-26 | 2016-11-26 | Efficient domestic sewage separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057044.3A CN106673082A (en) | 2016-11-26 | 2016-11-26 | Efficient domestic sewage separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106673082A true CN106673082A (en) | 2017-05-17 |
Family
ID=58866736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611057044.3A Withdrawn CN106673082A (en) | 2016-11-26 | 2016-11-26 | Efficient domestic sewage separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106673082A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107362611A (en) * | 2017-08-16 | 2017-11-21 | 山西省农业科学院现代农业研究中心 | A kind of centrifugation squash type equipment for separating liquid from solid applied to biogas engineering |
| CN108097698A (en) * | 2017-12-08 | 2018-06-01 | 长沙雷邦环保科技有限公司 | Organic waste microbiological treatment equipment |
| CN108580495A (en) * | 2018-04-12 | 2018-09-28 | 宁波清智环保科技有限公司 | Environmental protection sound deadening device |
| CN108654157A (en) * | 2018-04-26 | 2018-10-16 | 刘兴海 | A kind of movable type prevents the sewage treatment unit of blocking |
| CN109205865A (en) * | 2018-11-30 | 2019-01-15 | 傅少宇 | A kind of domestic waste water processing unit |
| CN110655126A (en) * | 2019-10-08 | 2020-01-07 | 吴远光 | Bury formula sewage rubbish cleaning device |
| CN110817937A (en) * | 2019-11-26 | 2020-02-21 | 湖南力泓新材料科技股份有限公司 | Purifier is used in zinc sulfate production |
| CN111282335A (en) * | 2020-03-10 | 2020-06-16 | 兰石生 | Rotary disc filter for sewage treatment |
| CN111359300A (en) * | 2020-03-06 | 2020-07-03 | 大连民族大学 | Self-cleaning formula sewage filter equipment |
| CN112591923A (en) * | 2021-03-02 | 2021-04-02 | 诸城市中裕机电设备有限公司 | Breeding wastewater treatment device |
| CN113069980A (en) * | 2021-04-05 | 2021-07-06 | 王振涛 | Liquid suspension mixing arrangement |
| CN113813790A (en) * | 2021-10-29 | 2021-12-21 | 杨波 | Sewage micro-filtration equipment |
-
2016
- 2016-11-26 CN CN201611057044.3A patent/CN106673082A/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107362611A (en) * | 2017-08-16 | 2017-11-21 | 山西省农业科学院现代农业研究中心 | A kind of centrifugation squash type equipment for separating liquid from solid applied to biogas engineering |
| CN108097698A (en) * | 2017-12-08 | 2018-06-01 | 长沙雷邦环保科技有限公司 | Organic waste microbiological treatment equipment |
| CN108097698B (en) * | 2017-12-08 | 2020-09-22 | 长沙雷邦环保科技有限公司 | Organic garbage microbiological treatment equipment |
| CN108580495A (en) * | 2018-04-12 | 2018-09-28 | 宁波清智环保科技有限公司 | Environmental protection sound deadening device |
| CN108654157A (en) * | 2018-04-26 | 2018-10-16 | 刘兴海 | A kind of movable type prevents the sewage treatment unit of blocking |
| CN108654157B (en) * | 2018-04-26 | 2020-10-02 | 陕西标远环保科技有限公司 | Mobile domestic sewage treatment device capable of preventing blockage |
| CN109205865B (en) * | 2018-11-30 | 2021-10-01 | 刘创建 | Household wastewater treatment device |
| CN109205865A (en) * | 2018-11-30 | 2019-01-15 | 傅少宇 | A kind of domestic waste water processing unit |
| CN110655126A (en) * | 2019-10-08 | 2020-01-07 | 吴远光 | Bury formula sewage rubbish cleaning device |
| CN110817937A (en) * | 2019-11-26 | 2020-02-21 | 湖南力泓新材料科技股份有限公司 | Purifier is used in zinc sulfate production |
| CN110817937B (en) * | 2019-11-26 | 2022-07-26 | 湖南力泓新材料科技股份有限公司 | Purifier is used in zinc sulfate production |
| CN111359300A (en) * | 2020-03-06 | 2020-07-03 | 大连民族大学 | Self-cleaning formula sewage filter equipment |
| CN111359300B (en) * | 2020-03-06 | 2021-08-03 | 大连民族大学 | Self-cleaning formula sewage filter equipment |
| CN111282335A (en) * | 2020-03-10 | 2020-06-16 | 兰石生 | Rotary disc filter for sewage treatment |
| CN112591923B (en) * | 2021-03-02 | 2021-05-18 | 诸城市中裕机电设备有限公司 | Breeding wastewater treatment device |
| CN112591923A (en) * | 2021-03-02 | 2021-04-02 | 诸城市中裕机电设备有限公司 | Breeding wastewater treatment device |
| CN113069980A (en) * | 2021-04-05 | 2021-07-06 | 王振涛 | Liquid suspension mixing arrangement |
| CN113069980B (en) * | 2021-04-05 | 2022-08-19 | 山东汉申化工科技有限公司 | Liquid suspension mixing arrangement |
| CN113813790A (en) * | 2021-10-29 | 2021-12-21 | 杨波 | Sewage micro-filtration equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170517 |
|
| WW01 | Invention patent application withdrawn after publication |