CN109665611A - A kind of heavy metal wastewater thereby recyclable device - Google Patents
A kind of heavy metal wastewater thereby recyclable device Download PDFInfo
- Publication number
- CN109665611A CN109665611A CN201810210725.1A CN201810210725A CN109665611A CN 109665611 A CN109665611 A CN 109665611A CN 201810210725 A CN201810210725 A CN 201810210725A CN 109665611 A CN109665611 A CN 109665611A
- Authority
- CN
- China
- Prior art keywords
- housing
- cavity
- vallecular cavity
- heavy metal
- splash guard
- 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- Withdrawn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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- 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
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
-
- 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
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of heavy metal wastewater thereby recyclable devices, including the first housing and the second housing for being fixed at the first housing bottom, cavity is provided in the first housing, left and right offers the first import and the second import at the top of the first housing, the first motor is fixedly embedded in the first housing inner roof wall, the first electronic motor spindle power is connected with main shaft, the main shaft periphery is installed with the first paddle of multi-disc, vallecular cavity is symmetrically set in the main shaft, the vallecular cavity is connected with the cavity, sliding splash guard is provided in the vallecular cavity, magnetic strips are embedded in the sliding splash guard inner sidewall；Overall structure of the present invention is simple, easy to use, carries out heavy metal precipitation twice using two kinds of medicaments to heavy metal wastewater thereby, greatly reduces the content of beary metal in waste water, harm when reducing discharge to environment protects environment.
Description
Technical field
The present invention relates to heavy metal containing wastewater treatment field, in particular to a kind of heavy metal wastewater thereby recyclable device.
Background technique
Heavy metal wastewater thereby waste water is primarily referred to as containing the significant heavy metal of the bio-toxicities such as mercury, lead, cadmium, chromium and arsenic
Waste water further includes having heavy metal such as zinc, copper, cobalt, nickel, tin, vanadium of certain toxicity etc..They run up to certain in water body
Limit will generate serious harm to one water plant of water body, one aquatic animal system, and may influence the mankind by food chain
Own health.Heavy metal wastewater thereby is difficult to administer, and traditional administration way needs manually mix chemical agent and heavy metal wastewater thereby
It is staticly settled after closing stirring, the water for isolating upper layer after precipitating discharges, and waste water is easy to splash in whipping process, to artificial
At injury, meanwhile, when waste discharge, is easy to mix lower layer's heavy metal precipitation, influences treatment effect.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of heavy metal wastewater thereby recyclable devices, are able to solve above-mentioned present
The problems in technology.
To solve the above problems, the present invention adopts the following technical scheme: a kind of heavy metal wastewater thereby recyclable device of the invention,
Including the first housing and the second housing for being fixed at the first housing bottom, it is provided with cavity in the first housing,
Left and right offers the first import and the second import at the top of the first housing, and the is fixedly embedded in the first housing inner roof wall
One motor, the first electronic motor spindle power are connected with main shaft, and the main shaft periphery is installed with multi-disc first
Paddle is symmetrically set with vallecular cavity in the main shaft, and the vallecular cavity is connected with the cavity, is arranged in the vallecular cavity
There is sliding splash guard, magnetic strips are embedded in the sliding splash guard inner sidewall, the sliding splash guard and the vallecular cavity slide
It is cooperatively connected, through-hole symmetrical above and below, the two pieces of sliding splash guards in left and right is provided with and communicated between two vallecular cavities in left and right
Strength top pressure spring is fixedly connected between inner sidewall, the strength top pressure spring passes through the through-hole, two slots in left and right
Connection setting through slot between in the middle part of chamber, the through slot bottom are fixedly installed strut, and fixed setting is cored at the top of the strut,
The outer diameter is twined equipped with conductance coil, and the main shaft bottom stage is provided with tube channel, the tube channel and the vallecular cavity
It can be connected to setting, the first housing bottom offers link slot, and the tube channel is connected to setting with the link slot, and described
Inlet channel is offered at the top of two bodies, the link slot is connected to setting with the inlet channel, and the second housing bottom left connects
It is logical to be provided with the inlet tube towards outside, the second motor, second electricity are fixedly embedded in the second housing left side wall
Motivation right end power is connected with shaft, is equidistantly fixedly installed the second paddle of multi-disc on the shaft, and described second
Right side of machine body wall top offers rhone, is provided with and communicated with lifting carriage slot, the lifting carriage slot on the downside of the rhone
Bottom is fixedly installed third motor, and power is connected with lifting screw, the lifting spiral shell at the top of the third motor
It is threadedly engaged on bar and is connected with water fender, the water fender and the lifting carriage slot are slidably connected, the first housing
On be provided with lighting device.
Wherein, when the water fender rises to top, sealing process can be played to the rhone；When the water fender retracts
When in the lifting carriage slot, the rhone is opened.
Wherein, when the conductance coil no power, the two pieces of sliding splash guards in left and right are in the strength top pressure spring
The vallecular cavity is realized under press effect and is closed, when the conductance coil is powered, the iron core generation is magnetic, anti-to the sliding
Magnetic strips in water plate generate attraction, move inward so that controlling two pieces of sliding splash guards, at this time the tube channel
Be connected with the vallecular cavity, at this time the water in the cavity by the vallecular cavity by the tube channel, the link slot and
The inlet channel flows into the second housing.
Wherein, the lighting device includes being fixed at the illuminating lamp holder of first housing right end face bottom and consolidating
The headlamp of the illuminating lamp holder bottom, the headlamp and power electric connection are set calmly.
The beneficial effects of the present invention are:
1. by pouring in cavity heavy metal wastewater thereby by the first import, then pouring the first medicament into sky by the second import
In chamber, the first electric motor operation is controlled, the first motor drives main shaft and the first paddle to medicament and heavy metal wastewater thereby
It is mixed, controls the first electric motor operation after mixing evenly and stop working, be then allowed to stand precipitating；After precipitation and separation, control
Conductance coil processed is powered, and iron core generates magnetism, generates attraction to the magnetic strips in sliding splash guard, so that the sliding of two pieces of left and right
Splash guard moves inward, and tube channel is connected with vallecular cavity at this time, at this time the water by the upper layer of processing for the first time in cavity
It is flowed into the second housing by vallecular cavity by tube channel, link slot and inlet channel, then second of medicament is added by inlet tube,
Controlling the second motor operation, the second motor drives shaft and the second paddle to be stirred, after mixing evenly, control the
Three-motor work, third motor drive lifting screw rotation, and lifting screw drives water fender to decline retraction lifting carriage slot
In, the waste water by second processing is discharged by rhone at this time, while can according to the height of lower sediment thing come
The degree in water fender decline retraction lifting carriage slot is controlled, so that heavy metal precipitation be effectively prevent to be mixed into water again.
2. overall structure of the present invention is simple, easy to use, heavy metal twice is carried out using two kinds of medicaments to heavy metal wastewater thereby
Precipitating, greatly reduces the content of beary metal in waste water, harm when reducing discharge to environment protects environment.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the overall structure diagram of heavy metal wastewater thereby recyclable device of the present invention；
Fig. 2 is the structural schematic diagram of main shaft in the present invention；
Fig. 3 is the structural schematic diagram that vallecular cavity is opened in main shaft in the present invention；
Fig. 4 is structural schematic diagram when heavy metal wastewater thereby recyclable device vallecular cavity of the present invention is opened；
Fig. 5 is structural schematic diagram when heavy metal wastewater thereby recyclable device rhone of the present invention is opened.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
A kind of heavy metal wastewater thereby recyclable device shown in -5 refering to fig. 1, including the first housing 10 and be fixed at described
The second housing 20 of 10 bottom of the first housing is provided with cavity 14,10 top left of the first housing in the first housing 10
The right side offers the first import 11 and the second import 13, is fixedly embedded at the first motor 12 in 10 inner roof wall of the first housing,
First motor, the 12 bottom power is connected with main shaft 30, and 30 periphery of main shaft is installed with the stirring of multi-disc first
Leaf 15 is symmetrically set with vallecular cavity 31 in the main shaft 30, and the vallecular cavity 31 is connected with the cavity 14, the vallecular cavity
It is provided with sliding splash guard 32 in 31, is embedded with magnetic strips, the sliding splash guard 32 in 32 inner sidewall of sliding splash guard
It is slidably connected with the vallecular cavity 31, is provided with and communicated with through-hole 33 symmetrical above and below between two vallecular cavities 31 in left and right, it is left
It is fixedly connected with strength top pressure spring 34 between right two pieces of 32 inner sidewalls of sliding splash guard, the strength top pressure spring 34 is worn
Cross the through-hole 33, connection setting through slot 37 between 31 middle part of vallecular cavity of left and right two, 37 bottom of the through slot fixed setting
There is strut 38, cored 36 is fixedly installed at the top of the strut 38,36 periphery of iron core is twined equipped with conductance coil 35, the master
30 bottom stage of axis body is provided with tube channel 39, and the tube channel 39 can be connected to setting, the first housing 10 with the vallecular cavity 31
Bottom offers link slot 16, and the tube channel 39 is connected to setting with the link slot 16, opens up at the top of the second housing 20
There is inlet channel 17, the link slot 16 is connected to setting, 20 bottom left of the second housing connection setting with the inlet channel 17
There is the inlet tube 18 towards outside, the second motor 21, second electricity are fixedly embedded in 20 left side wall of the second housing
21 right end power of motivation is connected with shaft 22, and the second paddle of multi-disc 23 is equidistantly fixedly installed on the shaft 22,
The 20 right side wall top of the second housing offers rhone 24, is provided with and communicated with lifting carriage slot on the downside of the rhone 24
26,26 bottom of lifting carriage slot is fixedly installed third motor 28, and 28 top power of the third motor cooperation connects
It is connected to lifting screw 27, is threadedly engaged on the lifting screw 27 and is connected with water fender 25, the water fender 25 and the lifting
Sliding groove 26 is slidably connected, and is provided with lighting device on the first housing 10.
Wherein, when the water fender 25 rises to top, sealing process can be played to the rhone 24；When the water fender
When in the 25 retraction lifting carriage slots 26, the rhone 24 is opened.
Wherein, when 35 no power of conductance coil, the two pieces of sliding splash guards 32 in left and right press bullet in the strength
The vallecular cavity 31 to be realized under the press effect of spring 34 and is closed, when the conductance coil 35 is powered, the iron core 36 generates magnetism,
Attraction is generated to the magnetic strips in the sliding splash guard 32, so that the two pieces of inside sidesways of the sliding splash guard 32 in left and right
Dynamic, the tube channel 39 is connected with the vallecular cavity 31 at this time, and the water in the cavity 14 is passed through by the vallecular cavity 31 at this time
The tube channel 39, the link slot 16 and the inlet channel 17 flow into the second housing 20.
Wherein, the lighting device includes the illuminating lamp holder 43 for being fixed at the 10 right end face bottom of the first housing
With the headlamp 44 for being fixed at 43 bottom of illuminating lamp holder, the headlamp 44 and power electric connection, the illumination dress
It sets and facilitates present apparatus night use and maintenance.
The present apparatus is in use, heavy metal wastewater thereby is poured into the cavity 14 by the first import 11, then by the first medicine
Agent is poured into the cavity 14 by second import 13, is controlled first motor 12 and is worked, first motor
Medicament and heavy metal wastewater thereby is mixed in the 12 drive main shafts 30 and first paddle 15, stirs evenly
After control first motor 12 work and stop working, be then allowed to stand precipitating；After precipitation and separation, the conductance coil 35 is controlled
It is powered, the iron core 36 generates magnetism, attraction is generated to the magnetic strips in the sliding splash guard 32, so that the two pieces of institutes in left and right
It states sliding splash guard 32 to move inward, the tube channel 39 is connected with the vallecular cavity 31 at this time, at this time in the cavity 14
The water by the upper layer of processing for the first time pass through the vallecular cavity 31 process tube channel 39, the link slot 16 and described
Inlet channel 17 flows into the second housing 20, then second of medicament is added by the inlet tube 18, controls second electricity
Motivation 21 operates, and second motor 21 drives the shaft 22 and second paddle 23 to be stirred, and stirring is equal
After even, control the third motor 28 and work, the third motor 28 drives the lifting screw 27 to rotate, the lifting
Screw rod 27 drives the water fender 25 to decline in lifting carriage slot 26 described in retraction, and the waste water by second of processing passes through at this time
The rhone 24 discharges, while can control the water fender 25 according to the height of lower sediment thing and decline retraction institute
The degree in lifting carriage slot 26 is stated, so that heavy metal precipitation be effectively prevent to be mixed into water again.
The beneficial effects of the present invention are:
1. by pouring in cavity heavy metal wastewater thereby by the first import, then pouring the first medicament into sky by the second import
In chamber, the first electric motor operation is controlled, the first motor drives main shaft and the first paddle to medicament and heavy metal wastewater thereby
It is mixed, controls the first electric motor operation after mixing evenly and stop working, be then allowed to stand precipitating；After precipitation and separation, control
Conductance coil processed is powered, and iron core generates magnetism, generates attraction to the magnetic strips in sliding splash guard, so that the sliding of two pieces of left and right
Splash guard moves inward, and tube channel is connected with vallecular cavity at this time, at this time the water by the upper layer of processing for the first time in cavity
It is flowed into the second housing by vallecular cavity by tube channel, link slot and inlet channel, then second of medicament is added by inlet tube,
Controlling the second motor operation, the second motor drives shaft and the second paddle to be stirred, after mixing evenly, control the
Three-motor work, third motor drive lifting screw rotation, and lifting screw drives water fender to decline retraction lifting carriage slot
In, the waste water by second processing is discharged by rhone at this time, while can according to the height of lower sediment thing come
The degree in water fender decline retraction lifting carriage slot is controlled, so that heavy metal precipitation be effectively prevent to be mixed into water again.
2. overall structure of the present invention is simple, easy to use, heavy metal twice is carried out using two kinds of medicaments to heavy metal wastewater thereby
Precipitating, greatly reduces the content of beary metal in waste water, harm when reducing discharge to environment protects environment.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (4)
1. a kind of heavy metal wastewater thereby recyclable device, including the first housing and the second machine for being fixed at the first housing bottom
Body, it is characterised in that: be provided with cavity in the first housing, left and right offers the first import and the at the top of the first housing
Two imports, the first motor is fixedly embedded in the first housing inner roof wall, and the first electronic motor spindle power cooperation connects
It is connected to main shaft, the main shaft periphery is installed with the first paddle of multi-disc, is symmetrically set with vallecular cavity in the main shaft,
The vallecular cavity is connected with the cavity, is provided with sliding splash guard in the vallecular cavity, embedding in the sliding splash guard inner sidewall
Equipped with magnetic strips, the sliding splash guard and the vallecular cavity are slidably connected, and are connected to setting between two vallecular cavities in left and right
There is through-hole symmetrical above and below, is fixedly connected with strength top pressure spring between the two pieces of sliding splash guard inner sidewalls in left and right, it is described
Strength top pressure spring passes through the through-hole, and through slot is arranged in connection between the vallecular cavity middle part of left and right two, and the through slot bottom is solid
Surely it is provided with strut, fixed setting is cored at the top of the strut, and the outer diameter is twined equipped with conductance coil, the main shaft
Bottom stage is provided with tube channel, and the tube channel can be connected to setting with the vallecular cavity, and the first housing bottom offers connection
Slot, the tube channel are connected to setting with the link slot, offer inlet channel, the link slot and institute at the top of the second housing
Inlet channel connection setting is stated, the second housing bottom left is provided with and communicated with towards external inlet tube, the second housing
It is fixedly embedded at the second motor in left side wall, the second motor right end power is connected with shaft, on the shaft
It equidistantly is fixedly installed the second paddle of multi-disc, second housing right side wall top offers rhone, the rhone
Downside is provided with and communicated with lifting carriage slot, and the lifting carriage trench bottom is fixedly installed third motor, and the third is electronic
Power is connected with lifting screw at the top of machine, is threadedly engaged on the lifting screw and is connected with water fender, the water fender with
The lifting carriage slot is slidably connected, and is provided with lighting device on the first housing.
2. heavy metal wastewater thereby recyclable device according to claim 1, it is characterised in that: when the water fender rises to top,
Sealing process can be played to the rhone；When the water fender retracts in the lifting carriage slot, the rhone is opened.
3. heavy metal wastewater thereby recyclable device according to claim 1, it is characterised in that: when the conductance coil no power,
Two pieces of the left and right sliding splash guard realizes closing, the electricity to the vallecular cavity under the press effect of the strength top pressure spring
When loop is powered, the iron core generates magnetism, attraction is generated to the magnetic strips in the sliding splash guard, so that left and right two
Sliding splash guard described in block moves inward, and the tube channel is connected with the vallecular cavity at this time, at this time the water in the cavity
It is flowed into the second housing by the vallecular cavity by the tube channel, the link slot and the inlet channel.
4. heavy metal wastewater thereby recyclable device according to claim 1, it is characterised in that: the lighting device includes that fixation is set
Set first housing right end face bottom illuminating lamp holder and be fixed at the headlamp of the illuminating lamp holder bottom, institute
State headlamp and power electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210725.1A CN109665611A (en) | 2018-03-14 | 2018-03-14 | A kind of heavy metal wastewater thereby recyclable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210725.1A CN109665611A (en) | 2018-03-14 | 2018-03-14 | A kind of heavy metal wastewater thereby recyclable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109665611A true CN109665611A (en) | 2019-04-23 |
Family
ID=66142672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810210725.1A Withdrawn CN109665611A (en) | 2018-03-14 | 2018-03-14 | A kind of heavy metal wastewater thereby recyclable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109665611A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005075367A1 (en) * | 2004-02-03 | 2005-08-18 | Andrzej Panuszewski | The method of water treatment and the device for water treatment |
| KR20130060909A (en) * | 2011-11-30 | 2013-06-10 | 주순기 | Anaerobic digester having automatic discharge function of sediments |
| CN107376689A (en) * | 2017-07-26 | 2017-11-24 | 徐俊芳 | Feed-processing device |
| CN206980577U (en) * | 2017-06-14 | 2018-02-09 | 杭州特种纸业有限公司 | Slurry agitation dispersal device is used in waterleaf paper for velcanized fiber production |
-
2018
- 2018-03-14 CN CN201810210725.1A patent/CN109665611A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005075367A1 (en) * | 2004-02-03 | 2005-08-18 | Andrzej Panuszewski | The method of water treatment and the device for water treatment |
| KR20130060909A (en) * | 2011-11-30 | 2013-06-10 | 주순기 | Anaerobic digester having automatic discharge function of sediments |
| CN206980577U (en) * | 2017-06-14 | 2018-02-09 | 杭州特种纸业有限公司 | Slurry agitation dispersal device is used in waterleaf paper for velcanized fiber production |
| CN107376689A (en) * | 2017-07-26 | 2017-11-24 | 徐俊芳 | Feed-processing device |
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| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190423 |