CN109876588A - A kind of metal burning soot processing device - Google Patents
A kind of metal burning soot processing device Download PDFInfo
- Publication number
- CN109876588A CN109876588A CN201910140612.3A CN201910140612A CN109876588A CN 109876588 A CN109876588 A CN 109876588A CN 201910140612 A CN201910140612 A CN 201910140612A CN 109876588 A CN109876588 A CN 109876588A
- Authority
- CN
- China
- Prior art keywords
- bevel gear
- fixedly installed
- fixedly connected
- gear
- chamber
- 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- Withdrawn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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Abstract
The present invention relates to industrial fumes process fields, specially a kind of metal burning soot processing device, the lower end of apparatus main body is fixedly installed with smoke inlet, the upper end of smoke inlet is fixedly connected with into smoke pipe, the right end outer surface for entering smoke pipe is fixedly installed with flight, the right end for entering smoke pipe is fixedly connected with disengagement chamber, left side in disengagement chamber is fixedly installed with baffle, right side in disengagement chamber is fixedly installed with bull stick, interior bar is socketed in bull stick, the upper end of bull stick is fixedly connected with second bevel gear, third hand tap gear and the 4th bevel gear are driven by first motor, pass through the different and difference for connecting upper and lower side of bevel gear diameter again, realize that bull stick and the different and revolving speed of interior bar steering are also different, reaching, which makes to generate negative pressure inside disengagement chamber, externally generates suction while can also carry out initial gross separation to the metal particle powder that cold analysis goes out, it is driven by the second motor Gear makes the reciprocal lead screw rotation of single rotation realize gap open and close water inlet pipe to drive switchboard or so to move back and forth.
Description
Technical field
The present invention relates to industrial fumes process field, specially a kind of metal burning soot processing device.
Background technique
Flue dust be due to oxidation, distillation, evaporation condensation thermal process in the solia particle being suspended in gas that is formed
Referred to as flue dust, what is generated when metal burning is exactly metal fumes, metal fumes be mainly characterized by high temperature and its ingredient is main
For oxides such as silica, aluminium oxide, iron oxide, calcium oxide, can be obtained one including metal fume fever etc. after human body sucking
The respiratory disease of series, therefore metal fumes have to pass through processing and could externally discharge.
But existing soot processing device can only be simply centrifugated, can not be the harmful substance inside flue dust
Completely remove, and without cooling device make high temperature flue gas directly contact soot processing device substantially reduce device use the longevity
Life.
Summary of the invention
A kind of metal burning soot processing device, the device can first separate the cooling of high-temperature metal flue dust again, and point
From removing flue dust further by dedusting plate and atomizer later, and the water generated is re-used the cold of flue dust
But on, the steam generated after cooling is recovered again achievees the effect that water recycles.
A kind of metal burning soot processing device, including apparatus main body, the lower end of described device main body be fixedly installed with into
Mouth, the upper end of the smoke inlet are fixedly connected with into smoke pipe, it is described enter smoke pipe right end outer surface be fixedly installed with flight,
It is described enter smoke pipe right end be fixedly connected with disengagement chamber, the left side in the disengagement chamber is fixedly installed with baffle, the disengagement chamber
Lower end be fixedly connected with metal recovery box, the right side in the disengagement chamber is fixedly installed with bull stick, is socketed in the bull stick
Interior bar, the upper end of the bull stick are fixedly connected with second bevel gear, and the upper end of the interior bar, which is connected, is connected to first bevel gear, described
It is fixedly installed with first motor on the left of the upper end of interior bar, the right end of the first motor is fixedly connected with third hand tap gear and the 4th
Bevel gear, the 4th bevel gear is on the right side of third hand tap gear:
Fixation offers water mist chamber above the left end of described device body interior, and the water mist chamber is connected with disengagement chamber, described
Water mist chamber upper end is fixedly connected with water tank, and the intracavitary portion's right end of water mist is fixedly installed with the first dedusting plate and the second dedusting plate,
It is fixedly installed with atomizer above the intracavitary portion left end of water mist, the left end of the water mist chamber is fixedly connected with gas outlet, institute
It states and is fixedly installed with active carbon inside gas outlet:
The lower end of the water mist chamber is fixedly connected with water inlet pipe, and switch enclosure, the switch enclosure are fixedly installed on the water inlet pipe
Inside is fixedly installed with switchboard, convex block is fixedly installed in the switchboard, it is reciprocal that the switchboard movable sleeve is connected to single rotation
Lead screw, the lower end of the water inlet pipe are fixedly connected with lock chamber, and the left end of the lock chamber is connected with cooler bin, described solid
The upper end for determining chamber is fixedly connected with steam pipe, and the lower end of the lock chamber is connected with residue box, the appearance of the cooler bin
Face is fixedly installed with gear, and the lower end of the gear is fixedly connected with the second motor.
Preferably, the cooler bin is fixedly connected with smoke pipe socket, the lock chamber is entered with smoke pipe is entered.
Preferably, the gap of first dedusting plate and the gap of the second dedusting plate are staggered.
Preferably, the third hand tap gear connects first bevel gear, the 4th bevel gear connects second bevel gear,
And the diameter of first bevel gear and third hand tap gear is bigger than second bevel gear and the 4th bevel gear.
Preferably, the upper end of the first bevel gear connection third hand tap gear, the second bevel gear connection the 4th
The lower end of bevel gear.
Preferably, the baffle upper surface is wave setting.
Preferably, single reciprocal lead screw of rotation is engaged with gear upper end.
Preferably, the convex block and single threaded engagement for revolving reciprocal lead screw.
Preferably, the inside with cooler bin is fixedly mounted in the flight.
Compared with prior art the invention has the following advantages:
1. drive third hand tap gear and the 4th bevel gear by first motor, then by the difference of bevel gear diameter with connect above and below
The difference at end realizes that bull stick and the different and revolving speed of interior bar steering are also different, and reaching generates generation negative pressure inside disengagement chamber externally
Suction can also carry out initial gross separation to the metal particle powder that cold analysis goes out simultaneously.
2. keeping the reciprocal lead screw rotation of single rotation real to drive switchboard or so to move back and forth by the second motor driven gear
Existing intermittently starting cooler bin can also be made to rotate while closing water inlet pipe so as to cause the dregs on inner wall flight work
The residue box easy cleaning on right side is scraped and is pushed under.
It is lost 3. wave setting by baffle and thereon hits big metal particle powder under the drive of air on its surface
It goes power to be recovered hence into the metal recovery box of lower section, passes through the friendship of the first dedusting plate and the second dedusting sheet separation again later
Mistake setting removes remaining fine powder further, is finally reached the purpose of removal harmful substance safety dumping.
Detailed description of the invention
Fig. 1 is whole main view of the invention;
Fig. 2 is overall perspective of the present invention;
Fig. 3 is enlarged drawing at Fig. 2A of the present invention;
Fig. 4 is cooler bin position of the present invention perspective view;
Fig. 5 is cooler bin position of the present invention left view;
Fig. 6 is dedusting plate schematic diagram of the present invention;
Fig. 7 is switch enclosure perspective view of the present invention;
Fig. 8 is switchboard perspective view of the present invention.
In figure: 1- apparatus main body, the gas outlet 2-, 201- active carbon, 3- residue box, 4- metal recovery box, 5- smoke inlet,
501- enter smoke pipe, 6- flight, 7- cooler bin, 8- gear, 9- steam pipe, 10- water mist chamber, 11- atomizer, 12- water tank,
The first dedusting plate of 13-, the second dedusting plate of 14-, 15- first motor, 16- bull stick, 17- water inlet pipe, 18- disengagement chamber, 19- baffle,
20- interior bar, 21- blade, 22- first bevel gear, 23- second bevel gear, 24- third hand tap gear, the 4th bevel gear of 25-, 26- are opened
Close the reciprocal lead screw of the mono- rotation of box, 27-, 2701- switchboard, 2702- convex block, 28- lock chamber, the second motor of 29-.
Specific embodiment
Please refer to Fig. 1 to 8, a kind of metal burning soot processing device planar structure schematic diagram and stereochemical structure signal
Figure.
A kind of metal burning soot processing device, including apparatus main body 1, the lower end of apparatus main body 1 are fixedly installed with into cigarette
Mouthfuls 5, the upper end of smoke inlet 5, which is fixedly connected with, to be entered the right end outer surface of smoke pipe 501 into smoke pipe 501 and is fixedly installed with flight 6,
The right end for entering smoke pipe 5 is fixedly connected with disengagement chamber 18, and the left side in disengagement chamber 18 is fixedly installed with baffle 19, the disengagement chamber
(18) lower end is fixedly connected with metal recovery box 4, and the right side in disengagement chamber 18 is fixedly installed with bull stick 16, socket in bull stick 16
There is interior bar 20, the upper end of bull stick 16 is fixedly connected with second bevel gear 23, and the upper end of interior bar 20, which is connected, is connected to first bevel gear 22,
Be fixedly installed with first motor 15 on the left of the upper end of interior bar 20, the right end of first motor 15 be fixedly connected with third hand tap gear 24 with
4th bevel gear 25, the 4th bevel gear 25 is on the right side of third hand tap gear 24:
Fixation offers water mist chamber 10 above left end inside apparatus main body 1, and water mist chamber 10 is connected with disengagement chamber 18, water mist chamber
10 upper ends are fixedly connected with water tank 12, and 10 inside right end of water mist chamber is fixedly installed with the first dedusting plate 13 and the second dedusting plate 14,
It is fixedly installed with atomizer 11 above 10 inside left end of water mist chamber, the left end of water mist chamber 10 is fixedly connected with gas outlet 2, outlet
Active carbon 201 is fixedly installed with inside mouth 2:
The lower end of water mist chamber 10 is fixedly connected with water inlet pipe 17, is fixedly installed with switch enclosure 26 on water inlet pipe 17, in switch enclosure 26
Portion is fixedly installed with switchboard 2701, and convex block 2702 is fixedly installed in switchboard 2701, and 2701 movable sleeve of switchboard is connected to list
Reciprocal lead screw 27 is revolved, the lower end of water inlet pipe 17 is fixedly connected with lock chamber 28, and the left end of lock chamber 28 is connected with cooler bin
7, the upper end of lock chamber 28 is fixedly connected with steam pipe 9, and the lower end of lock chamber 28 is connected with residue box 3, cooler bin 7 it is outer
Surface is fixedly installed with gear 8, and the lower end of gear 8 is fixedly connected with the second motor 29.
In specific implementation, cooler bin 7 is fixedly connected with smoke pipe 501 is entered, makes cold with the socket of smoke pipe 501, lock chamber 28 is entered
But the liquid in case 7 can provide the effect of cooling down to enter the high-temperature flue gas in smoke pipe 501, make the service life of separator
Increase, and cooler bin 7 is by being connected up to rotatable effect with lock chamber 28.
In specific implementation, the gap of the first dedusting plate 13 and the gap of the second dedusting plate 14 are staggered, and make by first
Probability when remaining fine powder passes through dedusting plate after step separation by contact removal greatly increases.
In specific implementation, third hand tap gear 24 connects first bevel gear 22, and the 4th bevel gear 25 connects second bevel gear
23, and the diameter of first bevel gear 22 and third hand tap gear 24 is bigger than second bevel gear 23 and the 4th bevel gear 25, causes to turn
While bar 16 and interior bar 20 rotate, bull stick 16 faster, makes large and medium-sized particle powder all by downward suction than 20 turns of interior bar
Power fetters only tiny particle powder and can just move up, and achievees the purpose that initial gross separation.
In specific implementation, first bevel gear 22 connects the upper end of third hand tap gear 24, in specific implementation, the second cone tooth
The lower end of 23 the 4th bevel gear 25 of connection of wheel, rotates 21 opposite direction of blade in bull stick 16 and interior bar 20, arrival is separating
The purpose that negative pressure externally generates suction is generated in chamber 18.
In specific implementation, middle 19 upper surface of baffle is wave setting, makes biggish metal particle powder in the band of air
It hits under dynamic and is moved down on it to run out of steam.
In specific implementation, single reciprocal lead screw 27 of rotation is engaged with 8 upper end of gear, and the second motor 29 is made to drive cooling by gear 8
Case 7 can also drive single reciprocal lead screw 27 of rotation to rotate while rotation.
In specific implementation, convex block 2702 and single threaded engagement for revolving reciprocal lead screw 27 rotate single reciprocal lead screw 27 of rotation
When can drive switchboard 2701 or so move back and forth, achieve the purpose that interval open close water inlet pipe 17.
In specific implementation, flight 6 be fixedly mounted with the inside of cooler bin 7, make heat in smoke pipe 501 more rapidly
Transmitting while so that dregs on inner wall is scraped by flight 6 and is pushed into 3 easy cleaning of residue box on right side.
A kind of working principle of metal burning soot processing device of the present invention.
Firstly, water tank 12 is filled water, water falls into water with atomizer 11 and the first dedusting plate 13, the second dedusting plate 14
The bottom end of mist chamber 10, then cooler bin 7 is entered by water inlet pipe 17, start first motor 15 later, first motor 15 drives third
Bevel gear 24 and the 4th bevel gear 25 rotate, so that third hand tap gear 24 drives first bevel gear 22 to rotate, the 4th bevel gear 25
It drives second bevel gear 23 to rotate, makes the interior bar 20 being attached thereto and bull stick 16 that blade 21 thereon be driven to rotate, and because the
One bevel gear 22 connects the upper end of third hand tap gear 24, and second bevel gear 23 connects the lower end of the 4th bevel gear 25, leads to interior bar
20 with the rotation side of bull stick 16 on the contrary, making in disengagement chamber 18 negative pressure generate suction outward by smoke inlet 5, suction makes metal burning
The high-temperature flue gas of generation enters smoke pipe 501 by smoke inlet 5, and be cooled precipitating metal powder particle when reaching cooler bin 7
Then enter disengagement chamber 18, metal powder granulates reach 18 left end of disengagement chamber when stopped by baffle 19, wherein biggish particle without
Method hits the metal recovery box 4 for running out of steam and falling under gravity into lower section on baffle 19 with air turns, and keeps off
Wave setting on 19 surface of plate makes the more efficient of its barrier metal particle, due to the 4th bevel gear 25 and second bevel gear 23
Diameter it is smaller than third hand tap gear 24 and first bevel gear 22, cause 20 revolving speed of rotating ratio interior bar of bull stick 16 fast, make more thin
Small metal powder could flow into water mist chamber 10 with air, and fine powder first contacts the second dedusting in 10 right end of water mist chamber
Plate 14, gap present on the second dedusting plate 14 and upper end connection water tank 12 make to generate water membrane, fine powder on its surface
The bottom end for flowing to water mist chamber 10 is wrapped up by water after encountering moisture film, can be encountered behind the gap that fine powder passes through the second dedusting plate 14
First dedusting plate 13, and the gap of the first dedusting plate 13 and the second dedusting plate 14 is staggered fine powder is made to touch moisture film
Probability improves, and air continues to flow at atomizer 11, and atomization water curtain removes fine powder further, finally passes through again
Gas outlet 2 is discharged in the filtering of active carbon 201, starts the second motor 29 while fine powder reaches water mist chamber 10 before, electricity
Machine 29 is rotated with moving gear 8, and gear 8 drives the cooler bin 7 being firmly connected with it to rotate, and it is past that 8 upper end of gear is fixedly connected with Dan Xuan
Multifilament thick stick 27 makes it that switchboard 2701 be driven to do left and right in switch enclosure 26 and moves back and forth, reaches interval closing and open water inlet pipe
17 purpose, inside plus thermogenetic steam can be returned in water tank 12 by steam pipe 9 when turning off, inside cooler bin
Water is evaporated after a part and can open in time the normal work that supplement water guarantees cooler bin 7, and water includes after water is evaporated
Dregs are precipitated the inner wall for being adhered to cooler bin 7, and because of flight 6 is equipped on the surface for entering smoke pipe 501, flight 6 makes
Making hot cooler bin 7 while heat transfer is more efficient, the dregs on inner wall by flight 6 are pushed to right side lock chamber when rotated
Easy cleaning in 28 residue box 3.
Claims (9)
1. a kind of metal burning soot processing device, including apparatus main body (1), it is characterised in that: under described device main body (1)
End is fixedly installed with smoke inlet (5), and the upper end of the smoke inlet (5) is fixedly connected with into smoke pipe (501), it is described enter smoke pipe
(501) right end outer surface is fixedly installed with flight (6), it is described enter smoke pipe (5) right end be fixedly connected with disengagement chamber (18),
Left side in the disengagement chamber (18) is fixedly installed with baffle (19), and the lower end of the disengagement chamber (18) is fixedly connected with metal and returns
It receives box (4), the right side in the disengagement chamber (18) is fixedly installed with bull stick (16), is socketed with interior bar in the bull stick (16)
(20), the upper end of the bull stick (16) is fixedly connected with second bevel gear (23), and the upper end of the interior bar (20), which is connected, is connected to the
The upper end left side of one bevel gear (22), the interior bar (20) is fixedly installed with first motor (15), the first motor (15)
Right end is fixedly connected with third hand tap gear (24) and the 4th bevel gear (25), and the 4th bevel gear (25) is in third hand tap gear
(24) right side:
Fixation offers water mist chamber (10) above the internal left end of described device main body (1), the water mist chamber (10) and disengagement chamber
(18) it is connected, water mist chamber (10) upper end is fixedly connected with water tank (12), the fixed peace of the internal right end of the water mist chamber (10)
Equipped with the first dedusting plate (13) and the second dedusting plate (14), the water mist chamber (10) is fixedly installed with atomization spray above internal left end
Head (11), the left end of the water mist chamber (10) are fixedly connected with gas outlet (2), are fixedly installed with work inside the gas outlet (2)
Property charcoal (201):
The lower end of the water mist chamber (10) is fixedly connected with water inlet pipe (17), is fixedly installed with switch enclosure on the water inlet pipe (17)
(26), it is fixedly installed with switchboard (2701), is fixedly installed in the switchboard (2701) convex inside the switch enclosure (26)
Block (2702), switchboard (2701) movable sleeve are connected to single reciprocal lead screw (27) of rotation, and the lower end of the water inlet pipe (17) is fixed
It is connected with lock chamber (28), the left end of the lock chamber (28) is connected with cooler bin (7), the upper end of the lock chamber (28)
It is fixedly connected with steam pipe (9), the lower end of the lock chamber (28) is connected with residue box (3), outside the cooler bin (7)
Surface is fixedly installed with gear (8), and the lower end of the gear (8) is fixedly connected with the second motor (29).
2. a kind of metal burning soot processing device according to claim 1, it is characterised in that: the cooler bin (7) with
Enter smoke pipe (501) socket, the lock chamber (28) is fixedly connected with smoke pipe (501) is entered.
3. a kind of metal burning soot processing device according to claim 1, it is characterised in that: first dedusting plate
(13) gap in gap and the second dedusting plate (14) is staggered.
4. a kind of metal burning soot processing device according to claim 1, it is characterised in that: the third hand tap gear
(24) first bevel gear (22) are connected, the 4th bevel gear (25) connects second bevel gear (23), and first bevel gear (22)
It is bigger than second bevel gear (23) and the 4th bevel gear (25) with the diameter of third hand tap gear (24).
5. a kind of metal burning soot processing device according to claim 1, it is characterised in that: the first bevel gear
(22) upper end of third hand tap gear (24) is connected, the second bevel gear (23) connects the lower end of the 4th bevel gear (25).
6. a kind of metal burning soot processing device according to claim 1, it is characterised in that: table on the baffle (19)
Face is wave setting.
7. a kind of metal burning soot processing device according to claim 1, it is characterised in that: single reciprocal lead screw of rotation
(27) it is engaged with gear (8) upper end.
8. a kind of metal burning soot processing device according to claim 1, it is characterised in that: the convex block (2702) with
Single threaded engagement for revolving reciprocal lead screw (27).
9. a kind of metal burning soot processing device according to claim 1, it is characterised in that: the flight (6) is solid
The inside of Dingan County dress and cooler bin (7).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910140612.3A CN109876588A (en) | 2019-02-26 | 2019-02-26 | A kind of metal burning soot processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910140612.3A CN109876588A (en) | 2019-02-26 | 2019-02-26 | A kind of metal burning soot processing device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109876588A true CN109876588A (en) | 2019-06-14 |
Family
ID=66929257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910140612.3A Withdrawn CN109876588A (en) | 2019-02-26 | 2019-02-26 | A kind of metal burning soot processing device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109876588A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110314913A (en) * | 2019-06-26 | 2019-10-11 | 张春喜 | A kind of metal fumes environmental protection receipts slag disintegrating slag device |
-
2019
- 2019-02-26 CN CN201910140612.3A patent/CN109876588A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110314913A (en) * | 2019-06-26 | 2019-10-11 | 张春喜 | A kind of metal fumes environmental protection receipts slag disintegrating slag device |
CN110314913B (en) * | 2019-06-26 | 2022-02-15 | 张春喜 | Environment-friendly metal smoke slag collecting and crushing device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111829355B (en) | Flue gas treatment equipment | |
CN106594835A (en) | Range hood | |
CN109876588A (en) | A kind of metal burning soot processing device | |
CN205307995U (en) | Centrifugal dust remover | |
CN205447915U (en) | Energy -concerving and environment -protective type petticoat pipe of front end wet -type | |
CN203474493U (en) | Flue gas cooling and dedusting brine wastewater evaporation device | |
CN219149635U (en) | High temperature dust-containing tail gas environmental protection treatment device | |
CN201093879Y (en) | Cast iron smelting furnace high temperature flue gas processing eqiupment | |
CN107158819B (en) | A kind of automatically cleaning fume dust remover and method | |
CN213790682U (en) | Rotary dust remover for lime kiln furnace | |
CN206681818U (en) | A kind of vehicle exhaust collection and treatment device | |
CN215572402U (en) | Waste heat recovery utilizes formula industrial waste gas to administer device | |
CN108800959A (en) | A kind of furnace of calcium carbide bag-type dust equipment | |
CN209302470U (en) | A kind of flue gas dust deduster | |
CN111207404A (en) | Composite flue gas desulfurization, denitrification, whitening and dedusting integrated equipment | |
CN113457342A (en) | Waste gas treatment device for hot blast stove | |
CN102261688A (en) | Cyclone cooking hood | |
CN220853186U (en) | Quick fume extractor is used to industrial kiln | |
CN212362073U (en) | Composite flue gas desulfurization, denitrification, whitening and dedusting integrated equipment | |
CN208536069U (en) | A kind of anti-pollution cooking fume extractor | |
CN209819551U (en) | Integrated smoke treatment equipment | |
CN216174217U (en) | Efficient submerged arc furnace flue gas micro silicon powder recovery system | |
CN211822568U (en) | Novel hypergravity oil smoke purifies device | |
CN213286196U (en) | Asphalt flue gas treatment device | |
CN220194409U (en) | Dust removing equipment of shaft kiln |
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: 20190614 |
|
WW01 | Invention patent application withdrawn after publication |