[go: up one dir, main page]

CN112191037B - Oil and gas filtering device with external flange - Google Patents

Oil and gas filtering device with external flange Download PDF

Info

Publication number
CN112191037B
CN112191037B CN202011204362.4A CN202011204362A CN112191037B CN 112191037 B CN112191037 B CN 112191037B CN 202011204362 A CN202011204362 A CN 202011204362A CN 112191037 B CN112191037 B CN 112191037B
Authority
CN
China
Prior art keywords
fixedly connected
flange
filter screen
oil
lining
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.)
Active
Application number
CN202011204362.4A
Other languages
Chinese (zh)
Other versions
CN112191037A (en
Inventor
张坤
张健
汤鱼
张博晗
徐天龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
703th Research Institute of CSIC
Original Assignee
703th Research Institute of CSIC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 703th Research Institute of CSIC filed Critical 703th Research Institute of CSIC
Priority to CN202011204362.4A priority Critical patent/CN112191037B/en
Publication of CN112191037A publication Critical patent/CN112191037A/en
Application granted granted Critical
Publication of CN112191037B publication Critical patent/CN112191037B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/02Flanged joints the flanges being connected by members tensioned axially
    • F16L23/032Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • General Details Of Gearings (AREA)

Abstract

An oil gas filtering device with an external flange relates to the technical field of power transmission. The invention aims to solve the problem that the existing ventilation hood can discharge a small part of oil mist in the gear box by being mixed with air while exhausting and releasing pressure, thereby bringing about the risk of environmental pollution. The invention comprises an outer housing, a lining, an upper cover, a first filter screen and a second filter screen, wherein the air inlet end of the outer housing is connected with the air outlet end of the box body, the lining is fixedly connected with the air outlet end of the outer housing, the first filter screen is fixedly connected with the air inlet end of the lining, the upper cover is fixedly connected with the outer side end of the lining, the second filter screen is fixedly connected with the air inlet end of the upper cover, and the air outlet end of the upper cover is provided with a flange plate. The invention is used for filtering oil gas of the gear box.

Description

Oil gas filtering device with flange
Technical Field
The invention relates to the technical field of power transmission, in particular to an oil gas filtering device with an external flange.
Background
The gear transmission device that uses at present is mostly oil spout lubrication, and when the during operation, the heat that gear, bearing friction produced can make the inside lubricating oil temperature of gear box rise, and inside pressure increases, if do not take the exhaust pressure release gear box shaft seal department to have oil leakage, oil leak risk, produces a large amount of oil gas and pressure especially when the gear rotational speed is higher, therefore ventilation unit is especially necessary in order to realize the inside pressure of gear box and external atmospheric pressure balance. The ventilation cover which is usually adopted can mix a small part of oil mist in the gear box in the air for discharge while exhausting and releasing pressure, so that the risk of environmental pollution is brought. With the increasing environmental requirements in modern society, the physical and mental health of the working environment of human beings is particularly important, so that higher requirements on the exhaust of a gear box are necessary, and particularly, the requirements on the oil mist discharge of the gear box are more strict in the environment with unsmooth air circulation.
The invention provides an out-of-band flange professional oil gas filtering device which adopts a double-layer net and a multi-channel airflow passing structure, and meanwhile, the output is connected by adopting a flange, so that the filtered air in a gear box is discharged to a designated place through an external pipeline, and zero pollution discharge is ensured.
Disclosure of Invention
The invention aims to solve the problem that the existing ventilation hood can discharge a small part of oil mist in a gear box by being mixed with air while exhausting pressure, so as to bring the risk of environmental pollution, and further provides an oil gas filtering device with an external flange.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides an out-of-band flange oil gas filter equipment, includes outer housing, bush, upper cover, first filter screen and second filter screen, and the income gas end of outer housing is connected with the end of giving vent to anger of box, and the end rigid coupling that gives vent to anger of outer housing has the bush, and the income gas end rigid coupling of bush has first filter screen, and the outside end rigid coupling of bush has the upper cover, and the income gas end rigid coupling of upper cover has the second filter screen, and the end of giving vent to anger of upper cover is equipped with the ring flange.
Compared with the prior art, the invention has the following beneficial effects:
The multi-channel secondary oil gas filter has the characteristics of simple processing, consistent interface, convenient disassembly and assembly, no maintenance under normal conditions and the like, and is connected with the exhaust hole of the speed reducer through the connecting bolt. And discharging the filtered air to a designated position through an external pipeline, so that zero emission and zero pollution are realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the bushing 4 of the present invention;
fig. 3 is a schematic view of the structure of the sleeve 6 in the present invention;
fig. 4 is a schematic view of the structure of the upper cover 5 of the present invention;
fig. 5 is a schematic view of the structure of the outer housing 2 in the present invention.
Detailed Description
In a first embodiment, referring to fig. 1 to 5, the oil-gas filtering device with flange comprises an outer casing 2, a liner 4, an upper cover 5, a first filter screen 7 and a second filter screen 8, wherein the gas inlet end of the outer casing 2 is connected with the gas outlet end of the box body 1, the liner 4 is fixedly connected with the gas outlet end of the outer casing 2, the first filter screen 7 is fixedly connected with the gas inlet end of the liner 4, the upper cover 5 is fixedly connected with the outer side end of the liner 4, the second filter screen 8 is fixedly connected with the gas inlet end of the upper cover 5, and the flange plate 5-1 is arranged at the gas outlet end of the upper cover 5.
In a second embodiment, referring to fig. 1 to 5, the shape of the bushing 4 in this embodiment is a cylinder with an open outer side and a closed inner side, a fixed disc 4-1 is disposed on the outer side wall of the bushing 4 along the circumferential direction, the fixed disc 4-1 is fixedly connected with a port of the air outlet end of the outer casing 2, a plurality of air inlets 4-2 are uniformly disposed on the outer side wall of the inner side end of the bushing 4 along the circumferential direction, and the first filter screen 7 is fixedly connected on the inner side wall of the inner side end of the bushing 4 and is located inside the air inlets 4-2. Other compositions and connection modes are the same as in the first embodiment.
In the third embodiment, referring to fig. 1 to 5, in the present embodiment, a sleeve 6 is fixedly connected to the inner side of the liner 4, the sleeve 6 is fixedly connected between the end surface of the inner side end of the liner 4 and the end surface of the air inlet end of the upper cover 5, a horizontal partition plate 6-1 is fixedly connected to the middle part of the outer side wall of the sleeve 6 along the circumferential direction, the outer side of the horizontal partition plate 6-1 is fixedly connected to the inner circumferential side wall of the liner 4, multiple groups of ventilation holes 6-2 are uniformly distributed on the pipe wall of the sleeve 6 along the circumferential direction, and each group of ventilation holes 6-2 respectively comprises multiple ventilation holes 6-2 uniformly distributed along the length direction. Other compositions and connection modes are the same as those of the second embodiment.
In the fourth embodiment, the first screen 7 is disposed below the horizontal partition 6-1 as described in the present embodiment, with reference to fig. 1 to 5. Other compositions and connection modes are the same as those of the third embodiment.
In a fifth embodiment, referring to fig. 1 to 5, in the present embodiment, a vent pipe 5-2 is disposed in the middle of the upper cover 5, a flange 5-1 is fixedly connected to an air outlet end of the vent pipe 5-2, a connection end plate 5-3 is fixedly connected to an air inlet end of the vent pipe 5-2, the connection end plate 5-3 is fixedly connected to an outer open end of the liner 4, an exhaust through hole 5-4 is disposed in the middle of the connection end plate 5-3, a plurality of air outlet holes 5-5 are uniformly distributed in the outer side of the exhaust through hole 5-4 along the circumferential direction, the exhaust through hole 5-4 is disposed inside the sleeve 6, the air outlet holes 5-5 are disposed outside the sleeve 6, a second filter screen 8 is fixedly connected to an upper end surface of the connection end plate 5-3 and disposed inside the vent pipe 5-2, and the second filter screen 8 is disposed inside the exhaust through hole 5-4 and the air outlet holes 5-5. Other compositions and connection modes are the same as those of the third embodiment.
In a sixth embodiment, referring to fig. 1 to 5, the outer casing 2 of the present embodiment is funnel-shaped, the small end of the outer casing 2 is an air inlet end, and the large end of the outer casing 2 is an air outlet end. Other compositions and connection modes are the same as those of the first, second, third, fourth or fifth embodiments.
In a seventh embodiment, referring to fig. 1 to 5, a connecting disc 2-1 is fixedly connected to the outer sidewall of the air inlet end of the outer casing 2 in the circumferential direction, the connecting disc 2-1 is fixedly connected to the box body 1, a connecting flange 2-2 is fixedly connected to the outer sidewall of the air outlet end of the outer casing 2 in the circumferential direction, and the connecting flange 2-2 is fixedly connected to the fixed disc 4-1. Other compositions and connection modes are the same as those of the fifth embodiment.
In the eighth embodiment, referring to fig. 1 to 5, a fixing flange 4-3 is provided on the outer sidewall of the outer end of the bushing 4 in the present embodiment along the circumferential direction, and the fixing flange 4-3 is fixedly connected with the connecting end plate 5-3. Other compositions and connection manners are the same as those of the seventh embodiment.
In the ninth embodiment, referring to fig. 1 to 5, washers 3 are provided between the connection flange 2-2 and the fixing disk 4-1 and between the fixing flange 4-3 and the connection end plate 5-3. Other compositions and connection modes are the same as those of the eighth embodiment.
In the tenth embodiment, referring to fig. 1 to 5, a plurality of first oil return holes 4-4 are uniformly distributed on the end surface of the inner side end of the liner 4 in the embodiment, the first oil return holes 4-4 are disposed on the inner side of the sleeve 6, and a plurality of second oil return holes 6-3 are uniformly distributed on the horizontal partition 6-1 along the circumferential direction. Other compositions and connection modes are the same as those of the third embodiment.
Principle of operation
When the gear box operates, friction heat of the gears and the bearings enables the temperature of lubricating oil in the gear box to rise, oil gas in the gear box is increased, the oil gas enters the outer cover shell through the exhaust port of the gear box, the bushing is arranged on the outer cover shell through bolt connection, the oil gas enters the inner part through primary filtration of a side hole of the bushing and a first filter screen metal net embedded in the inner wall of the bushing, porous characteristics are arranged on the pipe sleeve, the oil gas is circulated through a plurality of channels to be subjected to secondary filtration through a second filter screen metal net arranged on the upper cover, purified air is discharged through an external pipeline, and oil returns to the inside of the gear box through the oil hole.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (7)

1. The oil-gas filtering device with the flange is characterized by comprising an outer housing (2), a lining (4), an upper cover (5), a first filter screen (7) and a second filter screen (8), wherein the gas inlet end of the outer housing (2) is connected with the gas outlet end of a box body (1), the lining (4) is fixedly connected with the gas outlet end of the outer housing (2), the first filter screen (7) is fixedly connected with the gas inlet end of the lining (4), the upper cover (5) is fixedly connected with the outer side end of the lining (4), the second filter screen (8) is fixedly connected with the gas inlet end of the upper cover (5), and the gas outlet end of the upper cover (5) is provided with a flange plate (5-1);
the shape of the lining (4) is a cylinder with an open outer side end and a closed inner side end, a fixed disc (4-1) is arranged on the outer side wall of the lining (4) along the circumferential direction, the fixed disc (4-1) is fixedly connected with a port of the air outlet end of the outer cover shell (2), a plurality of air inlets (4-2) are uniformly distributed on the outer side wall of the inner side end of the lining (4) along the circumferential direction, and a first filter screen (7) is fixedly connected on the inner side wall of the inner side end of the lining (4) and is positioned on the inner side of the air inlets (4-2);
The inner side of the bushing (4) is fixedly connected with a sleeve (6), the sleeve (6) is fixedly connected between the end face of the inner side end of the bushing (4) and the end face of the air inlet end of the upper cover (5), the middle part of the outer side wall of the sleeve (6) is fixedly connected with a horizontal partition plate (6-1) along the circumferential direction, the outer side of the horizontal partition plate (6-1) is fixedly connected with the inner circumferential side wall of the bushing (4), a plurality of groups of vent holes (6-2) are uniformly distributed on the pipe wall of the sleeve (6) along the circumferential direction, and each group of vent holes (6-2) respectively comprise a plurality of vent holes (6-2) uniformly distributed along the length direction;
a plurality of first oil return holes (4-4) are uniformly distributed on the end face of the inner side end of the bushing (4), the first oil return holes (4-4) are arranged on the inner side of the sleeve (6), and a plurality of second oil return holes (6-3) are uniformly distributed on the horizontal partition plate (6-1) along the circumferential direction.
2. The oil and gas filtering device with the flange is characterized in that the first filter screen (7) is arranged on the lower side of the horizontal partition plate (6-1).
3. The oil-gas filtering device with the flange is characterized in that the middle of the upper cover (5) is provided with a vent pipe (5-2), a flange plate (5-1) is fixedly connected to the air outlet end of the vent pipe (5-2), the air inlet end of the vent pipe (5-2) is fixedly connected with a connecting end plate (5-3), the connecting end plate (5-3) is fixedly connected with the outer open end of the bushing (4), the middle of the connecting end plate (5-3) is provided with an exhaust through hole (5-4), the outer side of the exhaust through hole (5-4) is uniformly provided with a plurality of air outlet holes (5-5) along the circumferential direction, the exhaust through hole (5-4) is arranged on the inner side of the sleeve (6), the air outlet holes (5-5) are arranged on the outer side of the sleeve (6), a second filter screen (8) is fixedly connected to the upper end surface of the connecting end plate (5-3) and is arranged on the inner side of the vent pipe (5-2), and the second filter screen (8) is positioned on the inner side of the exhaust through hole (5-4) and the air outlet holes (5-5).
4. The oil-gas filtering device with flange outside according to claim 1,2 or 3, wherein the outer casing (2) is funnel-shaped, the small end of the outer casing (2) is an air inlet end, and the large end of the outer casing (2) is an air outlet end.
5. The oil-gas filtering device with the flange is characterized in that a connecting disc (2-1) is fixedly connected to the outer side wall of the gas inlet end of the outer cover shell (2) along the circumferential direction, the connecting disc (2-1) is fixedly connected with the box body (1), a connecting flange (2-2) is fixedly connected to the outer side wall of the gas outlet end of the outer cover shell (2) along the circumferential direction, and the connecting flange (2-2) is fixedly connected with the fixing disc (4-1).
6. The oil-gas filtering device with flange according to claim 5, wherein the outer side wall of the outer side end of the bushing (4) is provided with a fixing flange (4-3) along the circumferential direction, and the fixing flange (4-3) is fixedly connected with the connecting end plate (5-3).
7. The oil-gas filtering device with flange according to claim 6, wherein washers (3) are arranged between the connecting flange (2-2) and the fixed disk (4-1) and between the fixing flange (4-3) and the connecting end plate (5-3).
CN202011204362.4A 2020-11-02 2020-11-02 Oil and gas filtering device with external flange Active CN112191037B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011204362.4A CN112191037B (en) 2020-11-02 2020-11-02 Oil and gas filtering device with external flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011204362.4A CN112191037B (en) 2020-11-02 2020-11-02 Oil and gas filtering device with external flange

Publications (2)

Publication Number Publication Date
CN112191037A CN112191037A (en) 2021-01-08
CN112191037B true CN112191037B (en) 2025-03-07

Family

ID=74011334

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011204362.4A Active CN112191037B (en) 2020-11-02 2020-11-02 Oil and gas filtering device with external flange

Country Status (1)

Country Link
CN (1) CN112191037B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101884862A (en) * 2010-04-09 2010-11-17 江苏金通灵风机股份有限公司 Single-stage high-speed centrifugal fan oil mist separator
CN207941307U (en) * 2018-02-05 2018-10-09 中国工程物理研究院流体物理研究所 Vacuum pump oil gas knockout drum
CN211273900U (en) * 2019-11-22 2020-08-18 昆山新皓环境设备有限公司 Simple oil mist filtering equipment
CN213492542U (en) * 2020-11-02 2021-06-22 中国船舶重工集团公司第七0三研究所 Oil gas filtering device with external flange

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR979470A (en) * 1942-05-27 1951-04-26 Compressed gas filter
GB8703314D0 (en) * 1987-02-13 1987-03-18 Process Scient Innovations Air/oil separator
ITTO20021120A1 (en) * 2002-12-24 2004-06-25 Cornaglia G Off Met Spa SUPPLY AIR FILTERING DEVICE FOR ONE
CN201074671Y (en) * 2007-09-27 2008-06-18 贵州群建齿轮有限公司 Multifunctional ventilation cover
US7947100B1 (en) * 2009-12-15 2011-05-24 Gast Manufacturing, Inc. Combination vertical rotary vane suction pump and liquid separator
DE102014015941A1 (en) * 2013-11-20 2015-05-21 Mann + Hummel Gmbh Tank ventilation filter with downpipe
WO2016085147A1 (en) * 2014-11-28 2016-06-02 서울바이오시스 주식회사 Air cleaner
US9656199B2 (en) * 2015-03-04 2017-05-23 Tung-Tsai Lee Oil mist filter
DE102015014113A1 (en) * 2015-11-04 2017-05-04 Mann+Hummel Gmbh Filter element and filter assembly
CN108779773B (en) * 2016-03-22 2020-04-28 加特可株式会社 Exhaust structure of oil pump for automatic transmission and exhaust structure assembling method
CN108266516A (en) * 2018-03-06 2018-07-10 杭州前进齿轮箱集团股份有限公司 A kind of air filter for wind turbine gearbox
CN208859196U (en) * 2018-09-27 2019-05-14 江苏欧瑞德石油机械有限公司 A kind of gas production elbow connection pipe
CN109307057B (en) * 2018-11-08 2024-03-29 山西维达传动科技有限公司 Double-channel dustproof ventilation plug
CN109364533A (en) * 2018-11-29 2019-02-22 靳职雄 The equipment for recycling lubricating oil
CN111594743A (en) * 2020-05-25 2020-08-28 中国船舶重工集团公司第七0三研究所 Gas Turbine Oil Filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101884862A (en) * 2010-04-09 2010-11-17 江苏金通灵风机股份有限公司 Single-stage high-speed centrifugal fan oil mist separator
CN207941307U (en) * 2018-02-05 2018-10-09 中国工程物理研究院流体物理研究所 Vacuum pump oil gas knockout drum
CN211273900U (en) * 2019-11-22 2020-08-18 昆山新皓环境设备有限公司 Simple oil mist filtering equipment
CN213492542U (en) * 2020-11-02 2021-06-22 中国船舶重工集团公司第七0三研究所 Oil gas filtering device with external flange

Also Published As

Publication number Publication date
CN112191037A (en) 2021-01-08

Similar Documents

Publication Publication Date Title
CN102094845B (en) Shaft seal device of air compressor
CN108711997B (en) Multifunctional motor bearing sealing structure
CN108019281B (en) Lubricating oil system of miniature gas turbine
CN110917734B (en) Centrifugal impeller type ventilator and gear box
RU2003135539A (en) ROTARY COMPRESSOR UNIT AND HEAT EXCHANGER FOR INSTALLATION IN SUCH UNIT (OPTIONS)
CN213492542U (en) Oil gas filtering device with external flange
US2703674A (en) Turbine driven fan unit
CN112191037B (en) Oil and gas filtering device with external flange
CN104930165A (en) Wind turbine gearbox and sun gear and planet carrier spline pair connection structure thereof
CN109084123B (en) Compact closed flywheel housing and elastic damping coupling arrangement
CN202560621U (en) Blower rolling bearing set with two cooling types
GB937826A (en) Engine driven fan
CN218673095U (en) Sealing cover with elastic composite seal for rotary kiln gear ring seal
US1908627A (en) Pipe line pump assembly
CN106969133A (en) A kind of and hydraulic pump direct-connected power take-off gear tank shell and power take-off gear case
CN208203969U (en) Air filter for wind turbine gearbox
CA2919909A1 (en) Gearbox having gear baffle apparatus
CN208153693U (en) Realizing active sealing formula gear-box
CN202560329U (en) Improved screw expander
CN209557628U (en) Connection spline lubrication structure of electric commercial vehicle motor and gearbox
CN113357343A (en) Structure of generator shafting integrated in gear box
CN206860482U (en) Technique blower fan and technique blower fan system
CN114069916A (en) Combined oil-cooled motor system
CN213145296U (en) Ventilation cap of gear box
CN222650161U (en) A fan and its oil tank gland

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
GR01 Patent grant
GR01 Patent grant