CN114289425B - Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing - Google Patents

Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing Download PDF

Info

Publication number
CN114289425B
CN114289425B CN202111360349.2A CN202111360349A CN114289425B CN 114289425 B CN114289425 B CN 114289425B CN 202111360349 A CN202111360349 A CN 202111360349A CN 114289425 B CN114289425 B CN 114289425B
Authority
CN
China
Prior art keywords
spool
air cavity
sponge ball
pipeline
nylon rope
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
CN202111360349.2A
Other languages
Chinese (zh)
Other versions
CN114289425A (en
Inventor
满江
韩维良
陈嵩
王宏
张磊
金盈皓
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.)
Bohai Shipyard Group Co Ltd
Original Assignee
Bohai Shipyard Group Co Ltd
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 Bohai Shipyard Group Co Ltd filed Critical Bohai Shipyard Group Co Ltd
Priority to CN202111360349.2A priority Critical patent/CN114289425B/en
Publication of CN114289425A publication Critical patent/CN114289425A/en
Application granted granted Critical
Publication of CN114289425B publication Critical patent/CN114289425B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention provides a pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing. The device consists of a sponge ball and a transmitting and recovering body, wherein the transmitting and recovering body comprises a sealing end cover, a nylon rope, a spool air cavity, a propelling air cavity, a plectrum switch, a high-pressure air interface, a spool pulley and a spool pulley fixing shaft; a sealing end cover connected with the pipeline is arranged at one end of the emission recovery body, a through hole is arranged in the middle of the sealing end cover, and a nylon rope dragging the sponge ball passes through the through hole; the other end of the emission recovery body is provided with a high-pressure air interface, the inner side of the high-pressure air interface is provided with a plectrum switch, and a spool air cavity and a propelling air cavity are connected in parallel between the plectrum switch and the sealing end cover; the spool air cavity is internally provided with a spool pulley around which the nylon rope is wound, the radial surface of the spool pulley is provided with fan blades to form a wind wheel, and high-pressure air in the spool air cavity drives the spool pulley to rotate to recycle the nylon rope. The device is suitable for being used as a pipeline pulling and washing device.

Description

Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing
Technical Field
The invention relates to the field of pipeline inner surface pulling and washing construction, in particular to a pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing.
Background
The existing pipeline is pulled and washed by absorbent cotton and degreasing white cloth without burrs, a small amount of acetone or dilute sulfuric acid is dipped in the absorbent cotton and the degreasing white cloth to wipe the pipeline, and a sponge ball emitter is adopted for individual small-caliber bright stainless steel pipes, so that the inner surface of the pipeline is required to be primarily cleaned and then carefully pulled and washed. At present, the operation of the pipeline pulling and washing device on the market is extremely complicated, the pulling and washing is carried out in a reciprocating operation mode, but a frame with a large size is needed to be used for supporting, the occupied area is large, cotton cloth is needed to be inserted into a pipe, a motor is arranged in the frame, constructors need to hook hooks at two ends of the cotton cloth of the pipeline before operation, the motor is started, the pulling and washing effect is achieved through repeated movement of the cotton cloth in the pipe, the operation is complex, the efficiency is extremely low, and the labor consumption is larger than that of manual operation.
Disclosure of Invention
In order to solve the problem of low pulling and washing efficiency of the inner surface of a pipeline, the invention provides a pneumatic reciprocating sponge ball transmitting device for pulling and washing of the pipeline. The device is through high-pressure air supply kinetic energy, and plectrum switch control impels air cavity and spool air cavity conversion, and the extrusion of propelling movement sponge ball in the pipeline draws and washes or tightens up nylon cotton rope and retrieve the sponge ball, realizes that the sponge ball advances or retreats in the pipeline, adjusts the plectrum switch repeatedly, makes the sponge ball in pipeline internal surface reciprocating motion, solves the technical problem that the pipeline internal surface was drawn and washed.
The technical scheme adopted for solving the technical problems is as follows:
the pneumatic reciprocating sponge ball launching device for pipeline pulling and washing consists of a sponge ball and a launching and recycling body, wherein the launching and recycling body comprises a sealing end cover, a nylon rope, a spool air cavity, a propelling air cavity, a pulling sheet switch, a high-pressure air interface, a spool pulley and a spool pulley fixing shaft; a sealing end cover connected with the pipeline is arranged at one end of the emission recovery body, a through hole is arranged in the middle of the sealing end cover, and a nylon rope dragging the sponge ball passes through the through hole; the other end of the emission recovery body is provided with a high-pressure air interface, a plectrum switch is arranged at the inner side of the high-pressure air interface, a spool air cavity and a propelling air cavity are connected in parallel between the plectrum switch and the sealing end cover, and high-pressure air in the propelling air cavity pushes the sponge ball to extrude on the inner surface of the pipeline, so that stubborn stains are repeatedly pulled, washed and cleaned; a spool pulley around which the nylon rope is wound is arranged in the spool air cavity, fan blades are arranged on the radial surface of the spool pulley to form a wind wheel, and high-pressure air in the spool air cavity drives the spool pulley to rotate to recycle the nylon rope; the high-pressure air is converted between the spool air cavity and the pushing air cavity through the pulling piece switch, and the sponge ball is pushed out and dragged, so that the reciprocating motion of the sponge ball on the inner surface of the pipeline is realized.
In order to further solve the technical problem to be solved, the sponge ball is of an I-shaped structure, the tail of the sponge ball is connected with a towed nylon rope, when the sponge ball is required to retreat, the spool air cavity drives the spool pulley to rotate when the high-pressure air pushes the wind wheel to rotate, and then the nylon rope connected with the sponge ball is tightened, so that the sponge ball retreats.
Further, the spool air cavity and the propelling air cavity are independent cavities connected in parallel, the spool air cavity and the propelling air cavity are mutually isolated, the pulling sheet switch controls the conversion of high-pressure air, when the spool air cavity is pulled, the high-pressure air is directly communicated with the propelling air cavity, and the sponge ball is extruded by pressure to move forwards in the pipeline; when the nylon rope is pulled to the propelling air cavity, high-pressure air is directly communicated with the spool air cavity, the spool pulley is driven to rotate to pull the nylon rope to tighten, and the nylon rope pulls the sponge ball to retreat in the pipeline.
The positive effects are as follows: the invention supplies kinetic energy through connecting high-pressure air, repeatedly pulls and washes the inner surface of the multi-elbow pipeline stubborn stains, has sufficient power, saves energy, reduces consumption and is easy to operate; the pulling sheet switch controls the conversion of high-pressure air between the spool air cavity and the propelling air cavity, so that the sponge ball can move on the inner surface of the pipeline in a reciprocating mode, the labor force for pulling and washing operation is greatly saved, one person can operate the device to rapidly pull and wash the inner surface of the pipeline, the pulling and washing operation efficiency is greatly improved, and the automatic pulling and washing operation process is propelled. The pneumatic reciprocating sponge ball launching device is suitable for being applied to pipeline pulling and washing.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the air cavity of the spool of the present invention.
In the figure: 1. the device comprises a sponge ball, a nylon rope, a sealing end cover, a spool air cavity, a pushing air cavity, a pulling sheet switch, a high-pressure air interface, a spool pulley and a spool pulley fixing shaft.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the present invention, all the embodiments, implementations and features of the invention may be combined with each other without contradiction or conflict. In the present invention, conventional equipment, devices, components, etc., are either commercially available or homemade in accordance with the present disclosure. In the present invention, some conventional operations and apparatuses, devices, components are omitted or only briefly described in order to highlight the gist of the present invention.
According to the figure, the pneumatic reciprocating sponge ball launching device for pipeline pulling and washing consists of a sponge ball 1 and a launching and recovering body, wherein the launching and recovering body comprises a sealing end cover 3, a nylon rope 2, a spool air cavity 4, a propelling air cavity 5, a pulling piece switch 6, a high-pressure air interface 7, a spool pulley 8 and a spool pulley fixing shaft 9; a sealing end cover 3 connected with the pipeline is arranged at one end of the emission recovery body, a through hole is arranged in the middle of the sealing end cover 3, and a nylon rope 2 dragging the sponge ball 1 passes through the through hole; the other end of the emission recovery body is provided with a high-pressure air interface 7, a plectrum switch 6 is arranged at the inner side of the high-pressure air interface 7, a spool air cavity 4 and a propelling air cavity 5 are connected in parallel between the plectrum switch 6 and the sealing end cover 3, and high-pressure air in the propelling air cavity 5 pushes the sponge ball 1 to extrude on the inner surface of the pipeline, and the cleaning of stubborn stains are repeatedly carried out; a spool pulley 8 for winding the nylon rope 2 is arranged in the spool air cavity 4, fan blades are arranged on the radial surface of the spool pulley 8 to form a wind wheel, and high-pressure air in the spool air cavity 4 drives the spool pulley 8 to rotate so as to recycle the nylon rope 2; the high-pressure air is converted between the spool air cavity 4 and the pushing air cavity 5 through the pulling piece switch 6, the sponge ball 1 is pushed out and dragged, and the reciprocating motion of the sponge ball 1 on the inner surface of the pipeline is realized.
In order to optimize the structure of the invention, the sponge ball 1 is in an I-shaped structure, the tail part of the sponge ball is connected with a towed nylon rope 2, and when the sponge ball 1 is required to retreat, the spool air cavity 4 drives the spool pulley 8 to rotate when the wind wheel is pushed to rotate by high-pressure air, so that the nylon rope 2 connected with the sponge ball 1 is tightened, and the sponge ball 1 retreats.
In order to further optimize the structure of the invention, the spool air cavity 4 and the propelling air cavity 5 are independent cavities connected in parallel, the spool air cavity 4 and the propelling air cavity 5 are mutually isolated, the toggle switch 6 controls the conversion of high-pressure air, and when the spool air cavity 4 is dialed, the high-pressure air is directly communicated with the propelling air cavity 5 and the sponge ball 1 is extruded by pressure to move forward in a pipeline; when the nylon rope 2 is pulled to the propelling air cavity 5, high-pressure air is directly communicated with the spool air cavity 4, the spool pulley 8 is driven to rotate to pull the nylon rope 2 to tighten, and the nylon rope 2 pulls the sponge ball 1 to retreat in the pipeline.
In order to further optimize the square structure of the invention, the spool pulley 8 is fixedly arranged on the spool air cavity 4 of the launching and recovering body through a spool pulley fixing shaft 9.
The working principle of the invention is as follows:
the device supplies kinetic energy by connecting high-pressure air, and asynchronous work of the propelling air cavity and the spool air cavity can be realized by adjusting the pulling piece switch, so that the sponge ball at the front end of the device is driven into the pipe by the propelling air cavity to push the sponge ball to advance when the sponge ball needs to advance; when the sponge ball is required to retreat, the spool air cavity drives the spool pulley to rotate when the high-pressure air pushes the wind wheel to rotate, so that nylon ropes connected with the sponge ball are tightened, the sponge ball retreats, and then the air cavity switch is repeatedly adjusted, so that the reciprocating motion of the sponge ball on the inner surface of the pipeline can be realized.
The working process of the invention comprises the following steps:
firstly, a high-pressure air interface 7 is connected with a high-pressure air bag of a construction site;
secondly, when high-pressure air enters the device, the pulling piece switch 6 is firstly adjusted to push the air cavity 5 to be closed, then the sealing end cover 3 of the device is propped against the end face of the pipeline, the sponge ball 1 is inserted into the pipeline, the sponge ball 1 is connected with the nylon rope 2 in advance, and the end part of the nylon rope 2 is in an I-shaped design and can limit the sponge ball 1;
then, the pulling piece switch 6 can be adjusted to close the spool air cavity 4, the pushing air cavity 5 is filled with high-pressure air immediately, the air is extruded, the high-pressure air is filled in the pipe, and the sponge ball 1 is pushed to advance continuously until the sponge ball 1 reaches the pipe end;
finally, the pulling piece switch 6 is adjusted to the opening of the spool air cavity 4, high-pressure air impacts the spool pulley 8 and the welded wind wheel type fan blades of the spool pulley 8 to enable the spool pulley 8 to rotate under the limit of the spool pulley fixing shaft 9, so that the nylon ropes 2 are tightened, the sponge balls 1 are dragged to retreat, and reciprocating operation is achieved.
The invention is characterized in that:
a plectrum switch arranged at the high-pressure air outlet divides the high-pressure air into two air cavities, and a wind wheel type fan blade structure for pushing the spool pulley drives the pulley to operate and tighten the nylon rope; the other is used for directly pumping high-pressure air into the pipeline, the sponge ball is extruded by pressure to advance in the pipeline, the two air cavities are controlled by a pulling sheet switch, the switch is a pulling sheet, and the high-pressure air is not pumped into the air cavity at the other end when the switch is pulled to the other end.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (4)

1. A pneumatic reciprocating type sponge ball emitter for pipeline draws washes, characterized by: the device consists of a sponge ball (1) and a transmitting and recovering body, wherein the transmitting and recovering body comprises a sealing end cover (3), a nylon rope (2), a spool air cavity (4), a propelling air cavity (5), a pulling piece switch (6), a high-pressure air interface (7), a spool pulley (8) and a spool pulley fixing shaft (9); a sealing end cover (3) connected with the pipeline is arranged at one end of the emission recovery body, a through hole is arranged in the middle of the sealing end cover (3), and a nylon rope (2) dragging the sponge ball (1) passes through the through hole; the other end of the emission recovery body is provided with a high-pressure air interface (7), a plectrum switch (6) is arranged on the inner side of the high-pressure air interface (7), a spool air cavity (4) and a propelling air cavity (5) are connected in parallel between the plectrum switch (6) and the sealing end cover (3), and high-pressure air in the propelling air cavity (5) pushes the sponge ball (1) to extrude on the inner surface of a pipeline, so that stubborn stains are repeatedly pulled and cleaned; a spool pulley (8) for winding the nylon rope (2) is arranged in the spool air cavity (4), fan blades are arranged on the radial surface of the spool pulley (8) to form a wind wheel, and high-pressure air in the spool air cavity (4) drives the spool pulley (8) to rotate so as to recycle the nylon rope (2); the high-pressure air is converted between the spool air cavity (4) and the pushing air cavity (5) through the pulling piece switch (6), and the sponge ball (1) is pushed out and dragged, so that the reciprocating motion of the sponge ball (1) on the inner surface of the pipeline is realized.
2. A pneumatic reciprocating sponge ball launching device for pipeline pull-out as claimed in claim 1, wherein:
the sponge ball (1) is of an I-shaped structure, the tail of the sponge ball is connected with a towed nylon rope (2), when the sponge ball (1) is required to retreat, the spool air cavity (4) drives the spool pulley (8) to rotate when the high-pressure air pushes the wind wheel to rotate, and then the nylon rope (2) connected with the sponge ball (1) is tightened, so that the sponge ball (1) retreats.
3. A pneumatic reciprocating sponge ball launching device for pipeline pull-out as claimed in claim 1, wherein:
the spool air cavity (4) and the propelling air cavity (5) are independent cavities connected in parallel, the spool air cavity (4) and the propelling air cavity are mutually isolated, the toggle switch (6) controls the conversion of high-pressure air, and when the spool air cavity (4) is toggled, the high-pressure air is directly communicated with the propelling air cavity (5) and extrudes the sponge ball (1) to move forwards in a pipeline through pressure; when the nylon rope is shifted to the propelling air cavity (5), high-pressure air is directly communicated with the spool air cavity (4), the spool pulley (8) is driven to rotationally pull the nylon rope (2) to tighten, and the nylon rope (2) drags the sponge ball (1) to retreat in the pipeline.
4. A pneumatic reciprocating sponge ball launching device for pipeline pull-out as claimed in claim 1, wherein:
the spool pulley (8) is fixedly arranged in the spool air cavity (4) of the launching and recycling body through a spool pulley fixing shaft (9).
CN202111360349.2A 2021-11-17 2021-11-17 Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing Active CN114289425B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111360349.2A CN114289425B (en) 2021-11-17 2021-11-17 Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111360349.2A CN114289425B (en) 2021-11-17 2021-11-17 Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing

Publications (2)

Publication Number Publication Date
CN114289425A CN114289425A (en) 2022-04-08
CN114289425B true CN114289425B (en) 2023-10-13

Family

ID=80965599

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111360349.2A Active CN114289425B (en) 2021-11-17 2021-11-17 Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing

Country Status (1)

Country Link
CN (1) CN114289425B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114951166B (en) * 2022-07-01 2023-12-19 渤海造船厂集团有限公司 Stainless steel pipeline pulling and washing device and method
CN116652600B (en) * 2023-06-17 2024-03-15 长恩精机(长兴)有限公司 Production line and process for pipe parts

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD237123A1 (en) * 1985-05-10 1986-07-02 Getraenkekombinat Berlin Veb METHOD FOR THE AUTOMATIC CLEANING AND DISINFECTION OF PIPES, ESPECIALLY OF PIPING AND CLEANING DEVICE FOR CARRYING OUT THE PROCESS
CA2126282A1 (en) * 1993-06-22 1994-12-23 Andre Bizard Improvements to installations for cleaning tubes by circulating spongy balls, in particular improvements relating to impregnating the balls with water
CN103192954A (en) * 2013-04-22 2013-07-10 渤海造船厂集团有限公司 System and method for removing ship accumulated water
KR101498719B1 (en) * 2013-09-16 2015-03-06 주식회사 이엠이 Air removal device for sponge ball of heat exchanger tube cleaner
CN106862198A (en) * 2017-03-29 2017-06-20 成都理工大学 A kind of bionical cleaning device of Alternative manifold type pipe inwall and its clean method
CN106964608A (en) * 2017-04-26 2017-07-21 徐丽亚 Oil exploitation cleaning machine for inner wall of oil pipe
CN107138485A (en) * 2017-04-27 2017-09-08 徐州蓝湖信息科技有限公司 A kind of small-bore water route tube cleaning arrangement and method
CN107243489A (en) * 2017-07-21 2017-10-13 山东中佳新材料有限公司 Cleaning device for inner wall of pipeline and the method that pipeline is cleaned using it
CN111112252A (en) * 2019-12-12 2020-05-08 上海龙阳精密复合铜管有限公司 Novel method for cleaning inner groove pipe
CN112547711A (en) * 2020-11-10 2021-03-26 深圳市琦美创科技有限公司 Cleaning device for inner wall of pipeline

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD237123A1 (en) * 1985-05-10 1986-07-02 Getraenkekombinat Berlin Veb METHOD FOR THE AUTOMATIC CLEANING AND DISINFECTION OF PIPES, ESPECIALLY OF PIPING AND CLEANING DEVICE FOR CARRYING OUT THE PROCESS
CA2126282A1 (en) * 1993-06-22 1994-12-23 Andre Bizard Improvements to installations for cleaning tubes by circulating spongy balls, in particular improvements relating to impregnating the balls with water
CN103192954A (en) * 2013-04-22 2013-07-10 渤海造船厂集团有限公司 System and method for removing ship accumulated water
KR101498719B1 (en) * 2013-09-16 2015-03-06 주식회사 이엠이 Air removal device for sponge ball of heat exchanger tube cleaner
CN106862198A (en) * 2017-03-29 2017-06-20 成都理工大学 A kind of bionical cleaning device of Alternative manifold type pipe inwall and its clean method
CN106964608A (en) * 2017-04-26 2017-07-21 徐丽亚 Oil exploitation cleaning machine for inner wall of oil pipe
CN107138485A (en) * 2017-04-27 2017-09-08 徐州蓝湖信息科技有限公司 A kind of small-bore water route tube cleaning arrangement and method
CN107243489A (en) * 2017-07-21 2017-10-13 山东中佳新材料有限公司 Cleaning device for inner wall of pipeline and the method that pipeline is cleaned using it
CN111112252A (en) * 2019-12-12 2020-05-08 上海龙阳精密复合铜管有限公司 Novel method for cleaning inner groove pipe
CN112547711A (en) * 2020-11-10 2021-03-26 深圳市琦美创科技有限公司 Cleaning device for inner wall of pipeline

Also Published As

Publication number Publication date
CN114289425A (en) 2022-04-08

Similar Documents

Publication Publication Date Title
CN114289425B (en) Pneumatic reciprocating sponge ball transmitting device for pipeline pulling and washing
CN103814796B (en) A kind of split type irrigation sprinkler and using method
CN202026656U (en) Automatic telescopic drip irrigation device
CN209810833U (en) Pipeline cleaning device
CN214159227U (en) Textile dye stirring equipment convenient to clean
CN203467366U (en) Pig-house high-pressure flushing device
CN112941760A (en) A high-efficient intelligent dyeing equipment for textile fabric dyeing
CN212742687U (en) Hydraulic engineering pipeline desilting mechanism
CN110153114B (en) Pipeline cleaning device, pipeline and etching equipment
CN209569426U (en) A kind of action stretch pipe
CN116748239A (en) Pipeline cleaning method based on magnetorheological fluid
CN105507420A (en) Method for removing blockage of bends of sewer pipe
CN214184434U (en) High-speed cold advancing device
CN109732588B (en) Soft robot capable of spirally deforming
CN207701342U (en) Pump automatic flushing device
CN216763884U (en) High-pressure hose winding device for shipbuilding
CN215003163U (en) Cleaning device for inner cavity of heat exchange tube
CN220049291U (en) Pump pipe belt cleaning device
CN206868689U (en) High-efficient movable pig house washing dolly
CN215439113U (en) Braided tube coiling mechanism
CN216403441U (en) A receive and release tub device for birds poultry transfer car (buggy) cleaning equipment
CN111509624A (en) Air blowing type threading structure
CN219498762U (en) Electrical pipeline threading device
CN214612942U (en) Weft insertion device of air jet loom
CN218963511U (en) Pipeline inner wall cleaning equipment

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