CN110818001A - Evaporation chamber for low-temperature high-concentration sewage treatment - Google Patents
Evaporation chamber for low-temperature high-concentration sewage treatment Download PDFInfo
- Publication number
- CN110818001A CN110818001A CN201911042458.2A CN201911042458A CN110818001A CN 110818001 A CN110818001 A CN 110818001A CN 201911042458 A CN201911042458 A CN 201911042458A CN 110818001 A CN110818001 A CN 110818001A
- Authority
- CN
- China
- Prior art keywords
- evaporation
- plate
- overflow
- plates
- sewage treatment
- 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.)
- Pending
Links
Images
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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses an evaporation chamber for low-temperature high-concentration sewage treatment, which relates to the technical field of sewage treatment equipment and comprises an evaporation box, wherein a plurality of evaporation plates distributed in an S shape are fixedly arranged on the inner wall of the evaporation box, the overflow ends of the evaporation plates are provided with slots penetrating through the evaporation plates up and down, the overflow plates are in clearance fit in the slots on the same side, the upper ends of the overflow plates on the same side are respectively and integrally formed with a connecting plate vertically crossed with the overflow plates, the other ends of the connecting plates transversely penetrate out of the evaporation box, the evaporation box is provided with sliding grooves corresponding to the connecting plates one by one, the outer ends of the connecting plates on the same side are jointly and fixedly connected with vertical rods, the outer wall of the evaporation box is welded with a U-shaped part in clearance fit with the vertical rods, locking bolts for fastening the vertical rods are spirally connected on the U-shaped part, and the outer wall of, thereby adjusting the liquid into continuous laminar liquid films with different thicknesses and improving the evaporation efficiency.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to an evaporation chamber for low-temperature high-concentration sewage treatment.
Background
Some sewage treatment enterprises use low temperature evaporation technique to handle sewage at present, and the principle utilizes hot-air and sewage liquid film contact, and comparatively clean moisture in the liquid film is taken away in the evaporation, and then the sewage crystallization, and this kind of mode hot-air can recycle, and is with low costs to place and raw and other materials are practiced thrift to this kind of processing mode.
When the device is actually used, a plurality of evaporation plates which are distributed in an S shape are arranged in the evaporation box, sewage flows from top to bottom, the arrangement of the plurality of evaporation plates promotes the sewage to form a continuous laminar liquid film and descend in the S-shaped mode, meanwhile, hot air is injected into the lower part of the evaporation box, continuously rising hot air flow is in countercurrent contact with the continuous laminar liquid film in the S-shaped mode, after the device continuously runs for a period of time, moisture is evaporated away, and the sewage forms crystals.
However, in actual use, the thickness of the continuous laminar liquid film is not easy to adjust, and the continuous laminar liquid film cannot be adjusted to a proper thickness according to the type of sewage, so that the evaporation efficiency is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an evaporation chamber for low-temperature high-concentration sewage treatment, which solves the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: including the evaporation case, the inner wall fixed mounting of evaporation case has a plurality of evaporating plates that are S type and distribute, the fluting that runs through from top to bottom is seted up to the overflow end of evaporating plate, and the equal clearance fit of while evaporating plate is located the fluting of homonymy has the overflow board, and the equal integrated into one piece in upper end that is located the overflow board of homonymy has rather than crossing connecting plate perpendicularly, and the other end of connecting plate transversely wears out the evaporation case, set up the sliding tray with the connecting plate one-to-one on the evaporation case, and the sliding tray is upper and lower direction, the common fixedly connected with montant of the outer end of the connecting plate of homonymy, the outer wall welding of evaporation case has the U type spare with montant clearance fit, spiral connection has the locking bolt that is used for fastening the montant on the U type.
Optionally, the lower surface of the evaporation plate is provided with a concave-convex toothed or wavy structure, so that when passing through each layer of evaporation plate, the ascending hot air meets resistance to form local vortex turbulence, the hot air is forced to repeatedly contact with the liquid film for multiple times, and the hot air forms multiple vortex type small cycles above the liquid film of the evaporation plate.
Optionally, the homogeneous shaping in both sides has L type fixed plate around the overflow end of evaporating plate, and the equal spiro union of the other end of L type fixed plate is on the inner wall of evaporating box for the both ends homoenergetic of evaporating plate is supported, has improved evaporating plate life.
Optionally, the upper end of the vertical rod is integrally formed with an extension plate vertically intersected with the vertical rod, so that the vertical rod is convenient to adjust.
Optionally, an overflow hole is formed in the overflow plate, rubber is wrapped on the overflow plate, and the rubber has certain sealing performance.
Optionally, the top of the evaporation box is communicated with a water inlet pipe, and the lower part of the evaporation box is provided with an air inlet pipe.
Optionally, the thickness of the overflow plate is the same as the thickness of a gap between the evaporation plate and the L-shaped fixing plate, and two sides of the overflow plate are respectively in contact with one side of the evaporation plate and one side of the L-shaped fixing plate.
Optionally, the length of the vertical rod is far greater than that of the U-shaped part, and the width of the vertical rod is matched with that of the U-shaped part.
(III) advantageous effects
The invention provides an evaporation chamber for low-temperature high-concentration sewage treatment, which has the following beneficial effects:
according to the invention, the overflow plates positioned on the same side are connected to the outside of the evaporation box together through the connecting plate and the vertical rod, and the U-shaped piece in clearance fit with the vertical rod is fixed on the evaporation box, so that the positions of the overflow plates can be conveniently and synchronously adjusted, the positions of the overflow holes are changed and adjusted into continuous laminar liquid films with different thicknesses, and the evaporation efficiency is improved.
Drawings
FIG. 1 is a schematic view of the internal structure of an evaporation tank according to the present invention;
FIG. 2 is a schematic view of a partial structure of the outer end of the vertical rod of the present invention;
FIG. 3 is a schematic view of the overflow end structure of the evaporating plate of the present invention.
In the figure: 1. an evaporation tank; 101. a sliding groove; 2. an evaporation plate; 201. grooving; 3. an overflow plate; 301. an overflow aperture; 4. a connecting plate; 5. a vertical rod; 6. a U-shaped member; 7. locking the bolt; 8. scale lines; 9. an L-shaped fixing plate; 10. an extension plate; 11. a water inlet pipe; 12. an air inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 3, the present invention provides a technical solution: an evaporation chamber for low-temperature high-concentration sewage treatment comprises an evaporation box 1, a plurality of S-shaped evaporation plates 2 are fixedly arranged on the inner wall of the evaporation box 1, a slot 201 which penetrates through the evaporation plates 2 from top to bottom is arranged at the overflow end of the evaporation plates 2, meanwhile, the overflow plates 3 are in clearance fit in the slots 201 of the evaporation plates 2 positioned on the same side, the upper ends of the overflow plates 3 positioned on the same side are integrally formed with connecting plates 4 which are vertically crossed with the overflow plates, the other end of the connecting plate 4 transversely penetrates out of the evaporation box 1, the evaporation box 1 is provided with sliding grooves 101 which are in one-to-one correspondence with the connecting plate 4, and the sliding tray 101 is the upper and lower direction, the common fixedly connected with montant 5 of the outer end of the connecting plate 4 of homonymy, the outer wall welding of evaporation case 1 has the U type spare 6 with montant 5 clearance fit, and threaded connection has the locking bolt 7 that is used for fastening montant 5 on the U type spare 6, and the outer wall of evaporation case 1 is equipped with the scale mark 8 that uses with montant 5 cooperation simultaneously.
Wherein, the lower surface of the evaporation plate 2 is provided with a concave-convex tooth-shaped or wave-shaped structure: the homogeneous shaping in both sides has L type fixed plate 9 around the overflow end of evaporating plate 2, and the equal spiro union of the other end of L type fixed plate 9 is on the inner wall of evaporating box 1, and the upper end integrated into one piece of montant 5 has rather than the vertically crossing extension board 10, has seted up overflow hole 301 on the overflow plate 3, and the parcel has rubber on the overflow plate, and the top intercommunication of evaporating box 1 has inlet tube 11, and the lower part of evaporating box 1 is equipped with intake pipe 12.
The thickness of the overflow plate 3 is consistent with the thickness of a gap between the evaporation plate 2 and the L-shaped fixing plate 9, and two sides of the overflow plate 3 are respectively contacted with one sides of the evaporation plate 2 and the L-shaped fixing plate 9, so that the sealing performance between every two layers is improved.
Wherein, the length of montant 5 is far greater than the length of U type spare 6, and the width of montant 5 and the width phase-match of U type spare 6 have slight frictional resistance when removing montant 5, avoid excessive operation.
In conclusion, when the device is used, the thickness of the continuous laminar liquid film needs to be adjusted according to the conditions of different sewage qualities, so that evaporation can be more effectively carried out, during adjustment, the vertical rod 5 is moved along the U-shaped part 6 welded on the outer side of the evaporation box 1, and the thickness is observed according to the scale mark 8 arranged on the outer wall of the evaporation box 1, because the overflow plate 3 is correspondingly connected to the vertical rod 5 through the connecting plate 4, the movement of the vertical rod 5 can drive the overflow plate 3 to move, so that the position adjustment of the overflow hole 301 on the overflow plate 3 is completed, so that the thickness adjustment is realized, meanwhile, when the vertical rod 5 moves, the connecting plate 4 moves along the sliding groove 101 arranged on the evaporation box 1 in one-to-one correspondence, after the movement is completed, the vertical rod 5 can be tightly abutted to the outer wall of the evaporation box 1 through the locking bolt 7 spirally connected to the U-shaped part 6, and the position fixation is realized by increasing, the thickness of the continuous laminar liquid film is adjusted by synchronously adjusting the overflow plate 3, so that the evaporation efficiency is improved; l-shaped fixing plates 9 are integrally formed on the front side and the rear side of the overflow end of the evaporation plate 2, and the other ends of the L-shaped fixing plates 9 are screwed on the inner wall of the evaporation box 1, so that both ends of the evaporation plate 2 can be supported, the damage caused by long-time single-end support is avoided, and the service life of the evaporation plate 2 is prolonged; the lower surface of the evaporation plate 2 is provided with a concave-convex tooth-shaped or wave-shaped structure, so that the ascending hot air can meet resistance to form local vortex turbulence when passing through each layer of evaporation plate 2, the hot air is forced to repeatedly contact with the liquid film for many times, and the hot air can form a plurality of vortex type small cycles above the liquid film of the evaporation plate 2.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an evaporation chamber for low temperature high concentration sewage treatment, includes evaporating case (1), the inner wall fixed mounting of evaporating case (1) has a plurality of evaporating boards (2) that are S type distribution, its characterized in that: the overflow end of the evaporation plate (2) is provided with a slot (201) which penetrates up and down, the overflow plates (3) are in clearance fit in the slots (201) on the same side of the evaporation plate (2), the upper ends of the overflow plates (3) on the same side are integrally formed with connecting plates (4) which are vertically crossed with the overflow plates, the other end of the connecting plate (4) transversely penetrates out of the evaporation box (1), the evaporation box (1) is provided with sliding grooves (101) which are in one-to-one correspondence with the connecting plate (4), the sliding groove (101) is in the vertical direction, the outer ends of the connecting plates (4) at the same side are fixedly connected with a vertical rod (5) together, the outer wall of the evaporation box (1) is welded with a U-shaped piece (6) which is in clearance fit with the vertical rod (5), the U-shaped piece (6) is spirally connected with a locking bolt (7) used for fastening the vertical rod (5), meanwhile, the outer wall of the evaporation box (1) is provided with scale marks (8) matched with the vertical rod (5).
2. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: the lower surface of the evaporation plate (2) is provided with a concave-convex tooth-shaped or wave-shaped structure.
3. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: l-shaped fixing plates (9) are integrally formed on the front side and the rear side of the overflow end of the evaporation plate (2), and the other ends of the L-shaped fixing plates (9) are screwed on the inner wall of the evaporation box 1 (1).
4. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: the upper end of the vertical rod (5) is integrally formed with an extension plate (10) which is vertically crossed with the vertical rod.
5. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: an overflow hole (301) is formed in the overflow plate (3), and rubber is wrapped on the overflow plate (3).
6. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: the top of evaporation tank (1) is communicated with a water inlet pipe (11), and the lower part of evaporation tank (1) is provided with an air inlet pipe (12).
7. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: the thickness of the overflow plate (3) is consistent with the thickness of a gap between the evaporation plate (2) and the L-shaped fixing plate (9), and two sides of the overflow plate (3) are respectively contacted with one sides of the evaporation plate (2) and the L-shaped fixing plate (9).
8. The evaporation chamber for low-temperature high-concentration sewage treatment as claimed in claim 1, wherein: the length of the vertical rod (5) is far greater than that of the U-shaped part (6), and the width of the vertical rod (5) is matched with that of the U-shaped part (6).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911042458.2A CN110818001A (en) | 2019-10-29 | 2019-10-29 | Evaporation chamber for low-temperature high-concentration sewage treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911042458.2A CN110818001A (en) | 2019-10-29 | 2019-10-29 | Evaporation chamber for low-temperature high-concentration sewage treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110818001A true CN110818001A (en) | 2020-02-21 |
Family
ID=69551204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911042458.2A Pending CN110818001A (en) | 2019-10-29 | 2019-10-29 | Evaporation chamber for low-temperature high-concentration sewage treatment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110818001A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112744882A (en) * | 2021-01-22 | 2021-05-04 | 嘉兴港区工业污水处理有限公司 | Recycling system of toxic and harmful degradation-resistant wastewater |
CN114620884A (en) * | 2022-05-16 | 2022-06-14 | 深圳市同创环保科技有限公司 | Method and device for low-temperature fractional condensation and deep recycling of medical waste liquid |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421606A (en) * | 1979-03-22 | 1983-12-20 | Oriental Metal Mfg. Co. | Process for distilling water |
KR101383565B1 (en) * | 2013-03-21 | 2014-04-09 | 박용희 | Seawater evaporation device and evaporation rope module |
CN103848479A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Reverse osmosis device and reverse osmosis treatment system for treating high-concentration sewage |
CN103848463A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Treatment device of low-temperature evaporation high-concentration sewage |
CN103848529A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Reverse osmosis-based high-concentration sewage treatment method |
CN204065846U (en) * | 2014-09-09 | 2014-12-31 | 新疆维吾尔自治区计量测试研究院 | A kind of adjustable liquid level from spill box |
CN105600853A (en) * | 2015-12-30 | 2016-05-25 | 台州盛世环境工程有限公司 | Evaporation system of wastewater treatment equipment |
CN107117676A (en) * | 2017-06-08 | 2017-09-01 | 江苏新奇环保有限公司 | A kind of low temperature and high concentration sewage disposal vaporization chamber |
-
2019
- 2019-10-29 CN CN201911042458.2A patent/CN110818001A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421606A (en) * | 1979-03-22 | 1983-12-20 | Oriental Metal Mfg. Co. | Process for distilling water |
KR101383565B1 (en) * | 2013-03-21 | 2014-04-09 | 박용희 | Seawater evaporation device and evaporation rope module |
CN103848479A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Reverse osmosis device and reverse osmosis treatment system for treating high-concentration sewage |
CN103848463A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Treatment device of low-temperature evaporation high-concentration sewage |
CN103848529A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Reverse osmosis-based high-concentration sewage treatment method |
CN204065846U (en) * | 2014-09-09 | 2014-12-31 | 新疆维吾尔自治区计量测试研究院 | A kind of adjustable liquid level from spill box |
CN105600853A (en) * | 2015-12-30 | 2016-05-25 | 台州盛世环境工程有限公司 | Evaporation system of wastewater treatment equipment |
CN107117676A (en) * | 2017-06-08 | 2017-09-01 | 江苏新奇环保有限公司 | A kind of low temperature and high concentration sewage disposal vaporization chamber |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112744882A (en) * | 2021-01-22 | 2021-05-04 | 嘉兴港区工业污水处理有限公司 | Recycling system of toxic and harmful degradation-resistant wastewater |
CN114620884A (en) * | 2022-05-16 | 2022-06-14 | 深圳市同创环保科技有限公司 | Method and device for low-temperature fractional condensation and deep recycling of medical waste liquid |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110818001A (en) | Evaporation chamber for low-temperature high-concentration sewage treatment | |
CN208465211U (en) | A kind of falling film evaporator liquid distributor | |
CN204853414U (en) | Exhaust steam heat recovery unit | |
CN203663471U (en) | Improved falling film evaporator | |
CN205119897U (en) | A flat heat pipe | |
WO2007074112A1 (en) | Circuit arrangement comprising a heat exchanging device | |
CN201306335Y (en) | Novel thermotube-cooling oil tank | |
CN101050926A (en) | Liquid lift film evaporator | |
CN107866087A (en) | A kind of falling film evaporator | |
CN211357783U (en) | Falling film material distributor and falling film evaporation heater with same | |
CN212166570U (en) | Floating valve plate type rectifying tower | |
CN208645248U (en) | A kind of pvc pipe mounting device having high stability | |
CN210304258U (en) | High-efficient spraying device is used in production of inside and outside plastic-coated steel pipe | |
CN210434020U (en) | Reboiler matched with super-gravity rotating bed | |
CN211570152U (en) | Vacuum distillation type water treatment device | |
CN209247114U (en) | A kind of water treatment equipment with water level detection | |
CN211486599U (en) | Distillation tower for rectification | |
CN105115331B (en) | Flat-plate heat pipe and application method thereof | |
CN214971825U (en) | A laboratory organic solvent separation and recovery device | |
CN211936990U (en) | Liquid bath device | |
CN105691580A (en) | Water heater type seawater desalination fresh water support vessel | |
CN213342142U (en) | Solar photovoltaic photo-thermal combined system | |
CN106310695A (en) | Kettle-type reboiler | |
CN218923806U (en) | Uniform liquid distribution device suitable for horizontal tube falling film evaporator | |
CN202304541U (en) | Novel sheet bar for rising and falling film evaporator |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
|
RJ01 | Rejection of invention patent application after publication |