CN108793496A - A kind of municipal wastewater processing unit - Google Patents
A kind of municipal wastewater processing unit Download PDFInfo
- Publication number
- CN108793496A CN108793496A CN201810674553.3A CN201810674553A CN108793496A CN 108793496 A CN108793496 A CN 108793496A CN 201810674553 A CN201810674553 A CN 201810674553A CN 108793496 A CN108793496 A CN 108793496A
- Authority
- CN
- China
- Prior art keywords
- water
- subsider
- pipe
- tank
- flocculation
- 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- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F2001/007—Processes including a sedimentation step
Abstract
The invention discloses municipal wastewater processing units, include the blending tank of integration connection, flocculation tank and subsider, the blending tank, flocculation tank and subsider are sequentially communicated according to the vertical sequence of technological process, water inlet pipe is arranged in the front end of the blending tank, chemical feed pipe is connected on water inlet pipe, blending tank inner vertical direction is evenly equipped with partition board, the flocculation tank top is equipped with water spraying pipe, rabbling mechanism is equipped in the flocculation tank, on the right side of flocculation tank water distributing pore is offered on bottom wall, the water distributing pore is connected with subsider, the subsider is equipped with central tube, central tube vertebra bucket, helical baffle, collection bucket and water outlet.Blending tank, flocculation tank and the subsider that the present invention passes through the integration integration connection of setting, so that treated water quality and volumetric loading are all greatly enhanced, it is strong to the removal efficiency height of pollutant, detergent power, device structure is compact simultaneously, floor space is small, is suitble to small-scale sewage farm.
Description
Technical field
The present invention relates to field of sewage treatment equipment more particularly to a kind of municipal wastewater processing units.
Background technology
Sewage typically refers to waste water centainly polluted, from life and production discharge.Sewage disposal, refer to for
Sewage is set to reach the water quality requirement for draining a certain water body or reusing, the process purified to it.Sewage disposal is extensive
Applied to building, agriculture, the every field such as traffic, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink, also more and more
Come into the daily life of common people.Such as Chinese Patent Application No.：201510694980.4 the applying date：2015.10.22 specially
The invention of the entitled sewage-treatment plant of profit and sewage disposal component, solves the problems, such as that current sewage purification is halfway, but
It is the apparatus structure due to too complex, and not high to wastewater purification efficiency, cannot be satisfied higher sewage purification now
Technology requirement.
Invention content
In view of the above problems, the present invention provides a kind of municipal wastewater processing unit, structure is relatively easy, can to sewage into
Row fast filtering purifies, and clean-up effect is notable, also improves the purification efficiency of municipal wastewater, can effectively solve background in this way
The problems in technology.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of municipal wastewater processing unit, including sequentially connected blending tank, flocculation tank and subsider, the blending tank are closing
Tank body, and its inner wall both sides alternately be equipped with horizontal baffle, described horizontal baffle one end be fixed on mixing top tank structure on, the other end with
Top tank structure is mixed there are channel, blending tank top is equipped with the pipeline being connected with flocculation tank, and the pipeline is equipped with water pump and lock
Valve, the flocculation tank top are equipped with water spraying pipe, and the water inlet end of the water spraying pipe is connected with pipeline, and wadding is directed toward in water spraying pipe water outlet
Solidifying slot, the flocculation tank is interior to be equipped with rabbling mechanism, and water distributing pore, the water distributing pore and subsider are offered on the bottom wall of flocculation tank right side
It is connected, the subsider is equipped with central tube, central tube vertebra bucket, spiral plate, collection bucket and water outlet, and the collection bucket setting exists
Trench bottom is settled, the central tube is located at subsider center and its top is connected with central tube cone bucket, and the spiral plate setting exists
Between center pipe outer wall and subsider inner wall, and spiral plate is located at below water distributing pore, and the water outlet is arranged on the right side of subsider
On roof, baffle is equipped with below water outlet, baffle one end is fixed on subsider inner wall, the baffle other end and subsider inner wall it
Between there are channel, be equipped with dismountable water treatment plant at the top of the subsider, the water treatment plant includes sliding shoe, filter pipe,
The sliding shoe is movably connected at the top of subsider, and the filter pipe upper end is fixed on sliding shoe, and filter pipe lower end is provided with
Convex block is provided with the groove to fasten with convex block on the baffle.
Further, the rabbling mechanism includes agitating shaft, pushes blade and turn over blade, and the agitating shaft is located at flocculation
It the center of slot and rotates clockwise, the pushing blade and turns over blade and be respectively three pieces and be uniformly distributed around agitating shaft, institute
It states pushing blade to be located at agitating shaft top and water body can be involved in and be pushed, the blade that turns over is located at agitating shaft lower part and can incite somebody to action
Water body is involved in and turns over.
Further, the water spraying pipe includes main pipe and branch pipe, and the branch pipe is that multiple and one end is connected with main pipe,
The branch pipe is uniformly distributed around main pipe.
Further, the central tube vertebra bucket and central tube junction are equipped with tilt clapboard, on the tilt clapboard inferior horn
Fang Kaiyou is connected to the communicating pipe of subsider lower part.
Further, the angle of the tilt clapboard and horizontal plane is not less than 45 degree.
Further, water inlet pipe is arranged in the front end of the blending tank, and chemical feed pipe is connected on water inlet pipe.
Further, the top of the flocculation basin slot is equipped with stirring motor.
Further, the rotating speed of the rabbling mechanism is 50-100r/min.
It should be noted that in use, being entered in blending tank by water inlet pipe after pending waste water and medicament mixing, in water
Under flat partition board effect, forming curves flowing makes pending waste water and medicament be uniformly mixed, pending then again under water pump effect
Waste water is entered by water spraying pipe in flocculation tank, and rabbling mechanism is stirred it, is being pushed blade and is being turned under blade matches, is making
Water body realizes the convection current turnup from four angular centers, and making water body, tumble mixed is abundant up and down, then enters sedimentation by water distributing pore
In slot, into subsider in the helical flow path that is formed along helical baffle of pending waste water flow downward, it is in the process, pending
Particulate matter in waste water forms big floccule body under the action of medicament, then sinks in underflow collection bucket, then proceed to by
Central tube flows up, and enters subsider top into central tube vertebra bucket, the flco that part does not settle be further deposited to inclination every
It on plate, and flows downward along tilt clapboard, through entering communicating pipe in the collection bucket of subsider lower part, water body flows upward through filter
Water installations Filtration Filtration, the clear water after clarification are discharged by water outlet.
Compared with prior art, the present invention having following advantageous effect：
（1）The present invention passes through blending tank, flocculation tank and the subsider of the integration integration connection of setting so that treated water
Matter and volumetric loading are all greatly enhanced, strong to the removal efficiency height of pollutant, detergent power, while device structure is tight
Gather, floor space it is small, be suitble to small-scale sewage farm；
（2）Setting rabbling mechanism can make water body realize pair from four angular centers by turning over blade and pushing blade cooperation
Flow turnup, tumbling effect is good up and down for the water body for making under the flocculation reaction, and mixing is abundant and soft, be conducive to flocculation reaction into
Row；
（3）The setting of water spraying pipe is set, water can be uniformly injected into flocculation basin, is conducive to subsequent dispersion and mixing, keeps away
Exempt from the concentration of homogeneity water body；Water spraying pipe is laid out using diverging simultaneously, and plane water distribution effect is good, and water outlet is evenly dispersed.；
（4）The helical flow path that helical baffle formation is arranged flows downward, and increases sinking path, makes the particulate matter in pending waste water
Big floccule body is formed under the action of medicament, then sinks to underflow collection bucket, while what is be arranged can make communicating pipe not settle
Flco be further deposited in collection bucket so that flocculating setting effect is more notable；
（5）The water treatment plant of setting solves the untreated pollution sources in flocculating setting end, is further ensured that quality of water treatment,
Water treatment plant detachable connection simultaneously, can be replaced and be cleaned to filter pipe.
Description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is magnified partial view in Fig. 1；
Fig. 3 is rabbling mechanism schematic diagram of the present invention；
Fig. 4 is water spraying pipe sectional view of the present invention；
In figure：1, blending tank, 2, flocculation tank, 3, subsider, 4, horizontal baffle, 6, pipeline, 7, water pump, 8, gate valve, 9, water spraying pipe,
10, rabbling mechanism, 11, water distributing pore, 12, central tube, 13, central tube vertebra bucket, 14, helical baffle, 15, collection bucket, 16, water outlet
Mouthful, 17, baffle, 18, sliding shoe, 19, filter pipe, 20, convex block, 21, groove, 22, agitating shaft, 23, push blade, 24, turn over
Blade, 25, main pipe, 26, branch pipe, 27, tilt clapboard, 28, communicating pipe, 29, water inlet pipe, 30, chemical feed pipe, 31, stirring motor.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give several embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to unless another
It is defined, all of technologies and scientific terms used here by the article is usually managed with the those skilled in the art for belonging to the present invention
The meaning of solution is identical.
Used term is only for the purpose of describing specific embodiments not in the description of the invention herein
It is intended in the limitation present invention.Term " and or " used herein includes the arbitrary of one or more relevant Listed Items
And all combination.Embodiment described herein.Make to public affairs of the invention on the contrary, purpose of providing these embodiments is
It is more thorough and comprehensive to open content.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of municipal wastewater processing unit, including sequentially connected blending tank 1, wadding
Solidifying slot 2 and subsider 3, wherein blending tank 1, flocculation tank 2 and subsider 3 connect successively according to the vertical sequence of technological process
It is logical, so that pending waste water and medicament is first mixed in blending tank, then be sufficiently mixed under rabbling mechanism effect in flocculation tank, finally
In precipitation tank flocculation sediment, achieve the purpose that purify sewage.
Wherein, water inlet pipe 29 is arranged in the front end of blending tank 1, and chemical feed pipe 30 is connected on water inlet pipe 29
Water inlet pipe 4 is arranged in the front end of blending tank 1, chemical feed pipe 5 is connected on water inlet pipe 4, and blending tank 1 is closed tank, and its
Inner wall both sides are alternately equipped with horizontal baffle 4, and 4 one end of the horizontal baffle is fixed on 1 inner wall of blending tank, the other end and blending tank
There are channel, 1 tops of blending tank to be equipped with the pipeline 6 being connected with flocculation tank 2 for 1 inner wall, and the pipeline 6 is equipped with water pump 7 and lock
Enter in blending tank 1 after valve 8, pending waste water and medicament mixing, under the effect of multiple-layer horizontal partition board 6, forming curves flowing makes
Pending waste water and medicament are uniformly mixed.
Wherein, 2 top of flocculation tank is equipped with water spraying pipe 9, and the water inlet end of the water spraying pipe 9 is connected with pipeline 6, water spraying pipe 9
Flocculation tank 2 is directed toward in water outlet, and rabbling mechanism 10 is equipped in the flocculation tank 2, water distributing pore is offered on 2 right side bottom wall of flocculation tank
11, the water distributing pore 11 is connected with subsider 3, and water can be uniformly injected into flocculation tank, be conducive to by the setting of water spraying pipe 9
Subsequent dispersion and mixing, in addition, passing through 10 stirring action of rabbling mechanism again so that pending waste water and medicament are uniformly mixed,
The progress of more conducively follow-up flocculation reaction.
Wherein, subsider 3 is equipped with central tube 12, central tube vertebra bucket 13, spiral plate 14, collection bucket 15 and water outlet 16, institute
It states collection bucket 15 to be arranged in 3 bottom of subsider, the central tube 12 is located at 3 center of subsider and its top is connected with central tube cone
Bucket 13, between 14 centrally disposed pipe of the spiral plate, 12 outer wall and 3 inner wall of subsider, and spiral plate 14 is located under water distributing pore 11
Side, the water outlet 16 are arranged on 3 right side roof of subsider, and 16 lower section of water outlet is equipped with baffle 17, and 17 one end of baffle is fixed
There are channels, the helical baffle 14 of setting to increase on 3 inner wall of subsider, between 3 inner wall of 17 other end of baffle and subsider
Settling height, the particulate matter be conducive in the pending waste water of deposition coalescence of flocculate form big flocculation under the action of medicament
Body is sunk to then along helical baffle 14 in collection bucket 15, then proceedes to be flowed up by central tube 12, by central tube vertebra
Bucket 13 enters 3 top of subsider, due to the central tube cone bucket 13 of setting so that aperture becomes smaller when water body flows out, and is formed in sewage
Floccule body be all deposited in collection bucket 15 substantially.
Wherein, rabbling mechanism 10 includes agitating shaft 22, pushes blade 23 and turn over blade 24, and the agitating shaft 22 is located at wadding
It coagulates the center of slot 2 and rotates clockwise, the pushing blade 23 is respectively three pieces and surround agitating shaft 22 with blade 24 is turned over
Even distribution, the pushing blade 23 are located at 22 top of agitating shaft and water body can be involved in and be pushed, and the blade 24 that turns over is located at
22 lower part of agitating shaft and water body can be involved in and be turned over, is matched by pushing blade 23 and turning over blade 24, water body can be made
It realizes from the convection current turnup in four angular centers, keeps the tumbling effect above and below the water body under flocculation reaction good, mixing is abundant and soft
Be conducive to the progress of flocculation reaction.
Wherein, water spraying pipe 9 includes main pipe 25 and branch pipe 26, and the branch pipe 26 is that multiple and one end is connected with main pipe 25
Logical, the branch pipe 26 is uniformly distributed around main pipe 25, the water spraying pipe 9 of setting, for further dispersing water flow and is mitigated impulse force, is made
The soft and fine and closely woven injection settling tank of flow avoids water body tranquil in disturbance settling tank, ensures continuing efficiently for sedimentation.
Wherein, central tube vertebra bucket 13 and 12 junction of central tube are equipped with tilt clapboard 27, on 27 inferior horn of the tilt clapboard
Fang Kaiyou is connected to the communicating pipe 28 of 3 lower part of subsider, the flco that the pending useless water part into flocculation tank top does not settle
It is further deposited on tilt clapboard 24, and flows downward along tilt clapboard 27, enter in collection bucket 15 through communicating pipe 25, and incline
The angle of inclined clapboard 27 and horizontal plane is not less than 45 degree, and more conducively flco declines.
Wherein, 3 top of subsider is equipped with dismountable water treatment plant, and the water treatment plant includes sliding shoe 18, filter pipe
19, the sliding shoe 18 is movably connected in 3 top of subsider, and 19 upper end of the filter pipe is fixed on sliding shoe 18, filter pipe
19 lower ends are provided with convex block 20, and the groove 21 to fasten with convex block 20 is provided on the baffle 17, and the water treatment plant of setting solves
Flocculating setting end untreated complete pollution sources, are further ensured that quality of water treatment, while the water treatment plant side of being detachably connected
Formula can be replaced and be cleaned to filter pipe.
Wherein, the top of flocculation basin slot 2 is equipped with stirring motor 31, wherein the rotating speed of rabbling mechanism 11 is 50-100r/
Min so that stirring is soft fully, ensures the complete of flocculate and agglutination.
Operation principle：Entered in blending tank by water inlet pipe after pending waste water and medicament mixing, is acted in horizontal baffle 6
Under, forming curves flowing makes pending waste water and medicament be uniformly mixed, and under then water pump 7 acts on again, pending waste water is by aproll
Pipe enters in flocculation tank 2, and rabbling mechanism 10 is stirred it, is pushing blade 23 and is turning under blade 24 matches, is making water
Body realizes the convection current turnup from four angular centers, and making water body, tumble mixed is abundant up and down, then enters sedimentation by water distributing pore 11
In slot, into subsider 3 in the helical flow path that is formed along helical baffle 14 of pending waste water flow downward, in the process, wait for
Particulate matter in processing waste water forms big floccule body under the action of medicament, then sinks in underflow collection bucket 15, then
Continuation is flowed up by central tube 12, enters 3 top of subsider into central tube vertebra bucket 13, the flco that part does not settle further sinks
It drops on tilt clapboard 24, and flows downward along tilt clapboard 27, enter through communicating pipe 28 in the collection bucket 15 of subsider lower part,
Water body flows upward through water treatment plant filtering, and the clear water after clarification is discharged by water outlet.
Blending tank, flocculation tank and the subsider that the present invention passes through the integration integration connection of setting so that treated
Water quality and volumetric loading are all greatly enhanced, strong to the removal efficiency height of pollutant, detergent power, while device structure
It is compact, floor space is small, be suitble to small-scale sewage farm.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of municipal wastewater processing unit, including sequentially connected blending tank（1）, flocculation tank（2）And subsider（3）, special
Sign is：The blending tank（1）For closed tank, and its inner wall both sides is alternately equipped with horizontal baffle（4）, the horizontal baffle
（4）Blending tank is fixed in one end（1）On inner wall, the other end and blending tank（1）There are channel, blending tanks for inner wall（1）Top is equipped with
With flocculation tank（2）The pipeline being connected（6）, the pipeline（6）It is equipped with water pump（7）And gate valve（8）, the flocculation tank（2）Top
End is equipped with water spraying pipe（9）, the water spraying pipe（9）Water inlet end and pipeline（6）It is connected, water spraying pipe（9）It is directed toward flocculation in water outlet
Slot（2）, the flocculation tank（2）It is interior to be equipped with rabbling mechanism（10）, flocculation tank（2）Water distributing pore is offered on the bottom wall of right side（11）, institute
State water distributing pore（11）With subsider（3）It is connected, the subsider（3）Equipped with central tube（12）, central tube vertebra bucket（13）, spiral
Plate（14）, collection bucket（15）And water outlet（16）, the collection bucket（15）It is arranged in subsider（3）Bottom, the central tube
（12）Positioned at subsider（3）Central and its top is connected with central tube cone bucket（13）, the spiral plate（14）Centrally disposed pipe
（12）Outer wall and subsider（3）Between inner wall, and spiral plate（14）Positioned at water distributing pore（11）Lower section, the water outlet（16）Setting
In subsider（3）On the roof of right side, water outlet（16）Lower section is equipped with baffle（17）, baffle（17）One end is fixed on subsider（3）
On inner wall, baffle（17）The other end and subsider（3）There are channel, the subsiders between inner wall（3）Top is equipped with detachable
Water treatment plant, the water treatment plant includes sliding shoe（18）, filter pipe（19）, the sliding shoe（18）It is movably connected in sedimentation
Slot（3）Top, the filter pipe（19）Upper end is fixed on sliding shoe（18）On, filter pipe（19）Lower end is provided with convex block（20）,
The baffle（17）On be provided with and convex block（20）The groove to fasten（21）.
2. municipal wastewater processing unit according to claim 1, it is characterised in that：The rabbling mechanism（10）Including stirring
Axis（22）, push blade（23）With turn over blade（24）, the agitating shaft（22）Positioned at flocculation tank（2）Center and clockwise turn
It is dynamic, the pushing blade（23）With turn over blade（24）Respectively three pieces and circular agitating shaft（22）It is uniformly distributed, the pushing
Blade（23）Positioned at agitating shaft（22）Top and water body can be involved in and be pushed, it is described to turn over blade（24）Positioned at agitating shaft（22）
Lower part and water body can be involved in and be turned over.
3. municipal wastewater processing unit according to claim 1, it is characterised in that：The water spraying pipe（9）Including main pipe
（25）And branch pipe（26）, the branch pipe（26）For multiple and one end and main pipe（25）It is connected, the branch pipe（26）Around mother
Pipe（25）It is uniformly distributed.
4. municipal wastewater processing unit according to claim 1, it is characterised in that：The central tube vertebra bucket（13）With center
Pipe（12）Junction is equipped with tilt clapboard（27）, the tilt clapboard（27）It is provided with connection subsider above inferior horn（3）Lower part
Communicating pipe（28）.
5. municipal wastewater processing unit according to claim 4, it is characterised in that：The tilt clapboard（27）With horizontal plane
Angle be not less than 45 degree.
6. municipal wastewater processing unit according to claim 1, it is characterised in that：The blending tank（1）Front end setting
Water inlet pipe（29）, water inlet pipe（29）On be connected with chemical feed pipe（30）.
7. municipal wastewater processing unit according to claim 1, it is characterised in that：The flocculation basin slot（2）Top set
There is stirring motor（31）.
8. municipal wastewater processing unit according to claim 1, it is characterised in that：The rabbling mechanism（10）Rotating speed be
50-100r/min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810674553.3A CN108793496A (en) | 2018-06-27 | 2018-06-27 | A kind of municipal wastewater processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810674553.3A CN108793496A (en) | 2018-06-27 | 2018-06-27 | A kind of municipal wastewater processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108793496A true CN108793496A (en) | 2018-11-13 |
Family
ID=64070937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810674553.3A Withdrawn CN108793496A (en) | 2018-06-27 | 2018-06-27 | A kind of municipal wastewater processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108793496A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745042A (en) * | 2022-11-23 | 2023-03-07 | 呼伦贝尔健城环保科技有限公司 | Environment-friendly and energy-saving treatment system for urban sewage |
-
2018
- 2018-06-27 CN CN201810674553.3A patent/CN108793496A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745042A (en) * | 2022-11-23 | 2023-03-07 | 呼伦贝尔健城环保科技有限公司 | Environment-friendly and energy-saving treatment system for urban sewage |
| CN115745042B (en) * | 2022-11-23 | 2023-09-15 | 呼伦贝尔健城环保科技有限公司 | Environment-friendly energy-saving treatment system for urban sewage |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181113 |