CN112081944A - Right-angle type regulating ball valve - Google Patents
Right-angle type regulating ball valve Download PDFInfo
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- CN112081944A CN112081944A CN202011026383.1A CN202011026383A CN112081944A CN 112081944 A CN112081944 A CN 112081944A CN 202011026383 A CN202011026383 A CN 202011026383A CN 112081944 A CN112081944 A CN 112081944A
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- valve body
- right angle
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- ball
- sphere
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- 230000001105 regulatory effect Effects 0.000 title abstract description 19
- 230000009467 reduction Effects 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 238000009991 scouring Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
- F16K47/045—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member and the closure member being rotatable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to a right-angle regulating ball valve, which comprises a main valve body, wherein a side valve body and a lower valve body which is distributed at a right angle with the side valve body are arranged in the main valve body, a right-angle flow passage is formed among the main valve body, the side valve body and the lower valve body, one end of the right-angle flow passage is a medium inlet end, the other end of the right-angle flow passage is a medium outlet end, the medium inlet end is positioned at the side valve body, the medium outlet end is positioned at the lower valve body, a ball body is arranged in the main valve body, a ball body flow passage which is communicated with the right-angle flow passage is arranged in the ball body, a valve rod which is connected with the ball body is arranged at one end of the main valve body in a penetrating manner, the other end of the valve rod is: the right-angle regulating ball valve has the advantages of scouring resistance, accurate regulation, good sealing performance, long service life and low noise, can completely replace an inlet angle regulating valve, and has longer service life.
Description
Technical Field
The invention relates to a regulating valve used in the field of coal chemical industry, in particular to a right-angle regulating ball valve.
Background
The gasification and slag water treatment section of the coal chemical industry process has the characteristics of high pressure difference, strong scouring, strong corrosion, solid particles contained in media and the like, originally, an angle-shaped regulating valve is used for flow regulation, but the use effect is still not ideal, valve internal leakage and valve external leakage are often caused by scouring, and meanwhile, the equipment has larger noise in the operation process.
Disclosure of Invention
The technical problem to be solved by the present invention is to solve the above-mentioned deficiencies of the prior art,
the right-angle regulating ball valve has the advantages of scouring resistance, accurate regulation, good sealing performance, long service life and low noise.
In order to achieve the purpose, the invention provides the following technical scheme: right angle type ball valve of adjusting, including the main valve body, be equipped with the side valve body in the main valve body and be the lower valve body that the right angle distributes with the side valve body, the main valve body, the side valve body, form the right angle runner between the lower valve body, right angle runner one end is the medium entrance point other end and is the medium exit end, the medium entrance point is located the side valve body, the medium exit end is located lower valve body, be equipped with the spheroid in the main valve body, be equipped with the spheroid runner with right angle runner intercommunication in the spheroid, the valve rod of being connected with the spheroid is worn to be equipped with by main valve body one end, thereby the valve rod other end is connected with the executor and: the ball body flow passage is L-shaped, the valve rod drives the ball body to rotate, and the ball body is limited in the main valve body through the limiting structure.
Adopt above-mentioned technical scheme, the spheroid adopts the angle of L type to lead to the structure, firstly can be without changing gasification and slag water treatment workshop section pipeline alright with direct replacement angle type governing valve, secondly through the 90 turns of spheroid runner logical passageway department produce the frictional force loss, the propagation of noise reduction, the experiment proves that the frictional force loss of the direct pipeline of 18m equals the frictional force loss that 90 elbows produced, the switch of valve is realized to the spheroid under the drive of executor, the spheroid can only carry out rotary motion under limit structure's effect, can not float from beginning to end, the effect of acting as the fixed ball.
The right-angle regulating ball valve can be further arranged as follows: limiting structure is including setting up in spheroid both sides and with medium entrance point be in collinear preceding disk seat and back supporting seat, preceding disk seat and back supporting seat all outwards bulge and form the arc and scrape the face and scrape face and spheroid contact through the arc, be equipped with the elastic component between preceding disk seat and the right angle runner and make the other end that preceding disk seat set up the elastic component relatively contact with the spheroid all the time.
Adopt above-mentioned technical scheme, the spheroid is in the front under the combined action of disk seat and back supporting seat, can only carry out rotary motion, can not carry out floating around, the effect of acting as the fixed ball, when the valve is in the closed condition, the elasticity of elastic component provides the sealed specific pressure of pretension for preceding disk seat and realizes initial sealing, when the valve is preceding back production pressure differential, preceding disk seat can produce piston effect, press close to the sealed face of spheroid and produce sealedly under the effect of medium thrust, produce the structure for preventing the stronger medium of adhesion from producing on the spheroid and cause the valve bite or leak outward, we can be in the sealed department of disk seat and do the scraper design, the switching process can go to clean the spheroid.
The right-angle regulating ball valve can be further arranged as follows: the end of the sphere flow channel corresponding to the medium inlet end is a sphere inlet end, the cross section of the sphere inlet end is V-shaped, the end of the sphere corresponding to the medium outlet end is a sphere outlet end, the cross section of the sphere outlet end is circular, and the right-angle flow channel is provided with a noise reduction pore plate close to the sphere outlet end.
By adopting the technical scheme, the inlet end of the ball body of the ball valve is designed into an optimized V-shaped runner port, so that the valve has a good percentage flow regulation function, the outlet end of the ball body is a circular runner hole, so that a medium has a large flow capacity when flowing out of the ball body, the outlet end is prevented from being seriously washed by the medium, the outlet end of the ball body is not provided with a valve seat, and the medium in the middle cavity of the valve can directly fall down due to self weight by adopting an open design, so that the problems of valve torque increase and even locking caused by accumulation of solid medium in the middle cavity of the valve or coking of the medium in the middle cavity of the valve are prevented, when the liquid medium passes through the V-shaped port of the ball body, because the area of the throttling port is sharply changed, the flow capacity is reduced, the flow rate is increased, the pressure is reduced, the blocking flow is easy to generate the flash evaporation and cavitation, so that, therefore, the orifice plate with the functions of noise reduction, rectification and cavitation erosion prevention is arranged at the outlet end of the ball body, and the effects of reducing noise, weakening medium shock waves and reducing valve erosion are achieved.
The right-angle regulating ball valve can be further arranged as follows: the middle part of the noise reduction pore plate is provided with an overflowing hole, and the noise reduction pore plate is uniformly provided with a plurality of overflowing small holes along the circumferential direction of the overflowing hole.
By adopting the technical scheme, the orifice plate is provided with a plurality of small overflowing holes, and the orifice plate moves high-frequency sound to an ultrasonic range insensitive to human ears on the premise of ensuring the flow rate by controlling three parameters of the aperture, the pitch and the number of the small overflowing holes, so that the purpose of reducing noise is achieved, and meanwhile, the structure of the orifice plate also weakens shock waves so as to reduce valve erosion.
The right-angle regulating ball valve can be further arranged as follows: and a hard alloy layer is welded on the medium inlet end of the sphere in a surfacing mode.
By adopting the technical scheme, when the valve is in an adjusting state, the position of the ball opening is most seriously scoured, and in order to enhance the scouring resistance, hard alloy with the thickness of 3mm is firstly surfacing-welded at the position of the ball opening.
The right-angle regulating ball valve can be further arranged as follows: the actuator is an angular travel pneumatic actuator.
By adopting the technical scheme, the valve rod is controlled by the angular travel pneumatic actuator to drive the ball body to rotate so as to realize the opening and closing of the ball valve.
The right-angle regulating ball valve can be further arranged as follows: one end of the medium inlet end, which is far away from the main valve body, is in a horn mouth shape
The right-angle regulating ball valve can be further arranged as follows: and tungsten carbide is spray-welded at the medium inlet end and the medium outlet end.
By adopting the technical scheme, the tungsten carbide is sprayed and welded, so that the flushing resistance of the medium inlet end and the medium outlet end is better.
The invention has the beneficial effects that: the right-angle regulating ball valve has the advantages of scouring resistance, accurate regulation, good sealing performance, long service life and low noise, can completely replace an inlet angle regulating valve, and has longer service life.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a sphere according to an embodiment of the invention.
Fig. 3 is a schematic perspective view of a sphere according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a noise reduction orifice plate according to an embodiment of the present invention.
Fig. 5 is an enlarged schematic view of a portion a of fig. 1.
Detailed Description
Referring to fig. 1-5: a right-angle type regulating ball valve comprises a main valve body 1, wherein a side valve body 2 and a lower valve body 3 which is distributed at a right angle with the side valve body 2 are arranged in the main valve body 1, a right-angle flow passage is formed among the main valve body 1, the side valve body 2 and the lower valve body 3, one end of the right-angle flow passage is a medium inlet end 21, the other end of the right-angle flow passage is a medium outlet end 31, the medium inlet end 21 is positioned at the side valve body 2, the medium outlet end 31 is positioned at the lower valve body 3, a ball body 4 is arranged in the main valve body 1, a ball body flow passage 41 communicated with the right-angle flow passage is arranged in the ball body 4, a valve rod 5 connected with the ball body 4 is arranged at one end of the main valve body 1 in a penetrating mode, the other end of the valve rod 5 is connected with an angle stroke pneumatic actuator 6 to drive the valve rod, the limiting structure comprises a front valve seat 6 and a rear supporting seat 7 which are arranged at two sides of a sphere 4 and are in the same straight line with a medium inlet 21, the front valve seat 6 and the rear supporting seat 7 both protrude outwards to form an arc scraping surface 61 and are contacted with the sphere 4 through the arc scraping surface 61, an elastic member 8 is arranged between the front valve seat 6 and a right-angle flow passage to ensure that the other end of the front valve seat 6 opposite to the elastic member 8 is always contacted with the sphere 4, the elastic member 8 is a disc spring, one end of the sphere flow passage 41 corresponding to the medium inlet 21 is a sphere inlet 411, the cross section of the sphere inlet 411 is V-shaped, one end of the sphere 4 corresponding to the medium outlet 31 is a sphere outlet 412, the cross section of the sphere outlet 412 is circular, a noise reduction 10 is arranged at the position of the right-angle flow passage close to the sphere outlet 412, an overflowing hole 101 is arranged at the middle part of the noise reduction, the medium inlet end 411 of the sphere 4 is welded with a hard alloy layer 413 in a surfacing mode, and after the sphere is machined, the supersonic speed spray welding technology is adopted to integrally spray-weld tungsten carbide 414 to improve the erosion resistance.
Claims (8)
1. Right angle type ball valve of adjusting, including the main valve body, be equipped with the side valve body in the main valve body and be the lower valve body that the right angle distributes with the side valve body, the main valve body, the side valve body, form the right angle runner between the lower valve body, right angle runner one end is the medium entrance point other end and is the medium exit end, the medium entrance point is located the side valve body, the medium exit end is located lower valve body, be equipped with the spheroid in the main valve body, be equipped with the spheroid runner with right angle runner intercommunication in the spheroid, the valve rod of being connected with the spheroid is worn to be equipped with by main valve body one end, thereby the valve rod other end is connected with the executor and: the ball body flow passage is L-shaped, the valve rod drives the ball body to rotate, and the ball body is limited in the main valve body through the limiting structure.
2. The right angle regulator ball valve of claim 1, wherein: limiting structure is including setting up in spheroid both sides and with medium entrance point be in collinear preceding disk seat and back supporting seat, preceding disk seat and back supporting seat all outwards bulge and form the arc and scrape the face and scrape face and spheroid contact through the arc, be equipped with the elastic component between preceding disk seat and the right angle runner and make the other end that preceding disk seat set up the elastic component relatively contact with the spheroid all the time.
3. The right angle modulating ball valve of claim 1 or 2, wherein: the end of the sphere flow channel corresponding to the medium inlet end is a sphere inlet end, the cross section of the sphere inlet end is V-shaped, the end of the sphere corresponding to the medium outlet end is a sphere outlet end, the cross section of the sphere outlet end is circular, and the right-angle flow channel is provided with a noise reduction pore plate close to the sphere outlet end.
4. The right angle regulator ball valve of claim 3, wherein: the middle part of the noise reduction pore plate is provided with an overflowing hole, and the noise reduction pore plate is uniformly provided with a plurality of overflowing small holes along the circumferential direction of the overflowing hole.
5. The right angle regulator ball valve of claim 4, wherein: and a hard alloy layer is welded on the medium inlet end of the sphere in a surfacing mode.
6. The right angle regulator ball valve of claim 5, wherein: the actuator is an angular travel pneumatic actuator.
7. The right angle regulator ball valve of claim 6, wherein: one end of the medium inlet end, which is far away from the main valve body, is in a bell mouth shape.
8. The right angle regulator ball valve of claim 6, wherein: and tungsten carbide is spray-welded at the medium inlet end and the medium outlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026383.1A CN112081944A (en) | 2020-09-25 | 2020-09-25 | Right-angle type regulating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026383.1A CN112081944A (en) | 2020-09-25 | 2020-09-25 | Right-angle type regulating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112081944A true CN112081944A (en) | 2020-12-15 |
Family
ID=73739088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011026383.1A Pending CN112081944A (en) | 2020-09-25 | 2020-09-25 | Right-angle type regulating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112081944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984148A (en) * | 2021-03-03 | 2021-06-18 | 维克托阀门集团有限公司 | Cut-off ball valve with flow regulation function and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952460A (en) * | 2005-10-18 | 2007-04-25 | 株式会社山武 | Diffuser for fluid control valve and fluid control valve |
| US20100258193A1 (en) * | 2007-12-07 | 2010-10-14 | Mogas Industries, Inc. | Ball Valve Impedance Seat |
| CN206159533U (en) * | 2016-10-14 | 2017-05-10 | 大连津利流体设备开发有限公司 | Fire prevention, prevent leading to at bottom of static ball valve |
| CN107489783A (en) * | 2017-09-22 | 2017-12-19 | 兰州理工大学 | A kind of noise elimination V-type ball valve with combined pore plate |
| CN109340407A (en) * | 2018-09-14 | 2019-02-15 | 镇江努塞尔热能科技有限公司 | Right angle ball valve with decompression function |
-
2020
- 2020-09-25 CN CN202011026383.1A patent/CN112081944A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952460A (en) * | 2005-10-18 | 2007-04-25 | 株式会社山武 | Diffuser for fluid control valve and fluid control valve |
| US20100258193A1 (en) * | 2007-12-07 | 2010-10-14 | Mogas Industries, Inc. | Ball Valve Impedance Seat |
| CN206159533U (en) * | 2016-10-14 | 2017-05-10 | 大连津利流体设备开发有限公司 | Fire prevention, prevent leading to at bottom of static ball valve |
| CN107489783A (en) * | 2017-09-22 | 2017-12-19 | 兰州理工大学 | A kind of noise elimination V-type ball valve with combined pore plate |
| CN109340407A (en) * | 2018-09-14 | 2019-02-15 | 镇江努塞尔热能科技有限公司 | Right angle ball valve with decompression function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984148A (en) * | 2021-03-03 | 2021-06-18 | 维克托阀门集团有限公司 | Cut-off ball valve with flow regulation function and using method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201215 |
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| RJ01 | Rejection of invention patent application after publication |