CN112648406A - Wear-resistant turnover plate reversing valve - Google Patents
Wear-resistant turnover plate reversing valve Download PDFInfo
- Publication number
- CN112648406A CN112648406A CN202011515616.4A CN202011515616A CN112648406A CN 112648406 A CN112648406 A CN 112648406A CN 202011515616 A CN202011515616 A CN 202011515616A CN 112648406 A CN112648406 A CN 112648406A
- Authority
- CN
- China
- Prior art keywords
- valve
- clack
- wear
- shaft
- valve clack
- 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
- 230000007306 turnover Effects 0.000 title abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 230000008676 import Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a wear-resistant turnover plate reversing valve, which relates to the field of valves and comprises a valve body and a valve cover, wherein the valve cover is provided with an inlet, two outlets are arranged in the valve body, a valve shaft which is rotatably arranged is arranged at a position between the two outlets of the valve body, a valve seat is arranged at the outlet, a valve clack assembly which corresponds to the valve seat and is in sealing fit with the valve seat is arranged on the valve shaft, and the valve clack assembly rotates along with the valve shaft to close one outlet and open the other outlet; the valve flap assembly comprises: the valve clack support frame is fixedly arranged on the valve shaft, and side plates distributed in an acute angle are arranged on two sides of the valve clack support frame; the valve clacks are two in number and are respectively arranged on the side plates at the two sides of the valve clack support frame; the two valve clacks are respectively arranged in a back-to-back mode. The invention has the advantages of simple structure and good sealing effect.
Description
Technical Field
The invention relates to the field of valves, in particular to a wear-resistant flap reversing valve.
Background
The existing reversing valve is generally applied to bidirectional distribution when gravity feeding is carried out from upstream equipment to downstream equipment, the valve shaft controls the valve plate to swing left and right, the valve plate is only a single plate, and the problem of poor sealing effect exists.
Disclosure of Invention
In order to overcome the defects of the background technology, the invention provides the wear-resistant flap reversing valve which is simple in structure and good in sealing effect.
The technical scheme adopted by the invention is as follows: a wear-resistant turnover plate reversing valve comprises a valve body and a valve cover, wherein the valve cover is provided with an inlet, two outlets are arranged in the valve body, a valve shaft which is rotatably installed is arranged between the two outlets of the valve body, a valve seat is installed at the outlet, a valve clack assembly which corresponds to the valve seat and is in sealing fit with the valve seat is installed on the valve shaft, and the valve clack assembly rotates along with the valve shaft to close one outlet and open the other outlet; the valve flap assembly comprises:
the valve clack support frame is fixedly arranged on the valve shaft, and side plates distributed in an acute angle are arranged on two sides of the valve clack support frame;
the valve clacks are two in number and are respectively arranged on the side plates at the two sides of the valve clack support frame;
the two valve clacks are respectively arranged in a back-to-back mode.
The valve clack includes valve clack spiale, valve clack backing plate, valve clack clamp plate and valve clack sealing washer, the common centre gripping of valve clack backing plate and valve clack clamp plate the valve clack sealing washer, the valve clack spiale runs through and connects valve clack backing plate, valve clack clamp plate and valve clack sealing washer three, the valve clack spiale fixed mounting be in on the curb plate.
The valve clack sealing ring is made of wear-resistant rubber materials; hard alloy is welded on the valve seat in a surfacing mode; the valve clack sealing ring and the valve seat form a conical surface sealing pair.
The valve seat is circumferentially and fixedly installed on the valve body through bolts.
The valve cover is provided with a hard alloy sleeve at the position corresponding to the inlet.
The inner wall of the valve cover adopts a streamline structure.
The valve cover is provided with a manhole for manual operation.
The valve shaft is arranged on the valve seat, the valve shaft penetrates through the bearing seat, and a bearing is arranged between the bearing seat and the valve shaft.
The invention has the beneficial effects that: the technical scheme changes the flow direction of the material by utilizing the back-and-forth rotation of the valve clack assembly in the middle of the valve body, can change the direction with the material, has the advantages of simple structure and convenient and quick operation, is suitable for being installed on a conveying pipeline, and is mainly applied to the bidirectional distribution when solid materials such as powder, granular materials and the like are fed by gravity from upstream equipment to downstream equipment; in addition, the valve clacks on the two sides of the valve clack support frame are respectively in sealing fit with respective valve seats, a medium discharged from an inlet generates pressure on the valve clack positioned above, and the sealing performance of the valve clack positioned below and the valve seats can be improved.
Drawings
Fig. 1 is a schematic structural diagram of a wear-resistant flap reversing valve according to an embodiment of the invention.
Fig. 2 is a schematic diagram of the internal structure of the wear-resistant flap-type reversing valve.
Detailed Description
The embodiments of the invention will be further described with reference to the accompanying drawings in which:
as shown in the figure, the wear-resistant flap reversing valve comprises a valve body 1 and a valve cover 2, wherein the valve cover 2 is provided with an inlet 21, two outlets 11 are arranged in the valve body 1, a valve shaft 3 which is rotatably installed is arranged at a position between the two outlets 11 of the valve body 1, a valve seat 4 is installed at the outlet 11, a valve flap assembly 5 which corresponds to the valve seat 4 and is in sealing fit with the valve seat 4 is installed on the valve shaft 3, and the valve flap assembly 5 rotates along with the valve shaft 3 to close one outlet 11 and open the other outlet 11; the valve flap assembly 5 includes:
a valve flap support frame 51 fixedly mounted on the valve shaft 3 and having side plates 511 disposed at acute angles on both sides thereof;
two valve flaps 52 which are respectively arranged on the side plates 511 at two sides of the valve flap support frame 51;
the two valve flaps 52 are respectively arranged oppositely; the technical scheme changes the flow direction of the material by utilizing the back-and-forth rotation of the valve clack assembly in the middle of the valve body, can change the direction with the material, has the advantages of simple structure and convenient and quick operation, is suitable for being installed on a conveying pipeline, and is mainly applied to the bidirectional distribution when solid materials such as powder, granular materials and the like are fed by gravity from upstream equipment to downstream equipment; in addition, the valve clacks on the two sides of the valve clack support frame are respectively in sealing fit with respective valve seats, a medium discharged from an inlet generates pressure on the valve clack positioned above, and the sealing performance of the valve clack positioned below and the valve seats can be improved.
The angle of the two valve clacks is 30 degrees, so that the impulse force of the medium can be converted into the pressure of the valve clacks to the valve seat most reasonably, and the sealing performance is ensured.
The valve clack 52 comprises a valve clack connecting shaft 521, a valve clack base plate 522, a valve clack pressing plate 523 and a valve clack sealing ring 524, the valve clack base plate 522 and the valve clack pressing plate 523 clamp the valve clack sealing ring 524 together, the valve clack connecting shaft 521 is connected with the valve clack base plate 522, the valve clack pressing plate 523 and the valve clack sealing ring 524 in a penetrating mode, and the valve clack connecting shaft 521 is fixedly installed on the side plate 511.
The valve clack sealing ring 524 is made of wear-resistant rubber; the valve seat 4 is made of hard alloy through surfacing; the valve clack sealing ring 524 and the valve seat 4 form a conical surface sealing pair; the sealing performance is good, and the service life is prolonged.
The valve seat 4 is circumferentially and fixedly arranged on the valve body 1 through bolts; can be maintained and replaced, and saves the cost.
The valve cover 2 is provided with a hard alloy sleeve 22 at the position corresponding to the inlet 21, so that the valve cover is wear-resistant and has the function of prolonging the service life of equipment.
The inner wall of the valve cover 2 adopts a streamline structure; the impact of the material on the side surface of the valve cover when the valve clack is reversed is favorably reduced.
A manhole 23 for manual operation is arranged on the valve cover 2; the replacement of the valve flap and valve seat can be performed on-line.
The valve shaft is characterized by further comprising a platform 6 for mounting the valve body 1 and a driving piece 7 for driving the valve shaft 3 to rotate, wherein a bearing seat 8 is mounted on the platform 6, the valve shaft 3 penetrates through the bearing seat 8, and a bearing 9 is arranged between the bearing seat 8 and the valve shaft 3; the driving piece adopts a motor, the motor drives the valve shaft and the valve clack to do reciprocating motion together, the direction of the valve clack assembly is changed to change the direction, and the flexible reversing action of the product is ensured.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.
Claims (8)
1. The utility model provides a wear-resisting board switching-over valve that turns over, its includes valve body (1) and valve gap (2), valve gap (2) are equipped with one import (21), be equipped with two export (11) in valve body (1), its characterized in that: the valve body (1) is provided with a valve shaft (3) which is rotatably installed at a position between two outlets (11), a valve seat (4) is installed at the outlet (11), a valve flap assembly (5) which corresponds to the valve seat (4) and is in sealing fit with the valve seat (4) is installed on the valve shaft (3), and the valve flap assembly (5) rotates along with the valve shaft (3) to close one outlet (11) and open the other outlet (11); the valve flap assembly (5) comprises:
the valve clack support frame (51) is fixedly arranged on the valve shaft (3) and two sides of the valve clack support frame are provided with side plates (511) distributed in an acute angle;
the valve clacks (52) are two in number and are respectively arranged on the side plates (511) at two sides of the valve clack support frame (51);
the two valve flaps (52) are each arranged facing away from one another.
2. The wear-resistant reverse-turning valve according to claim 1, characterized in that: the valve clack (52) comprises a valve clack connecting shaft (521), a valve clack base plate (522), a valve clack pressing plate (523) and a valve clack sealing ring (524), the valve clack base plate (522) and the valve clack pressing plate (523) clamp the valve clack sealing ring (524) together, the valve clack connecting shaft (521) penetrates through the valve clack base plate (522), the valve clack pressing plate (523) and the valve clack sealing ring (524), and the valve clack connecting shaft (521) is fixedly installed on the side plate (511).
3. The wear-resistant reverse-turning valve according to claim 2, characterized in that: the valve clack sealing ring (524) is made of wear-resistant rubber material; hard alloy is welded on the valve seat (4) in a surfacing mode; the valve clack sealing ring (524) and the valve seat (4) form a conical surface sealing pair.
4. A wear-resistant reverse-turning valve according to claim 3, wherein: the valve seat (4) is circumferentially and fixedly installed on the valve body (1) through bolts.
5. The wear-resistant reverse-turning valve according to claim 1, characterized in that: the valve cover (2) is provided with a hard alloy sleeve (22) at the position corresponding to the inlet (21).
6. The wear-resistant reverse-turning valve according to claim 1, characterized in that: the inner wall of the valve cover (2) adopts a streamline structure.
7. The wear-resistant reverse-turning valve according to claim 1, characterized in that: a manhole (23) for manual operation is arranged on the valve cover (2).
8. The wear-resistant reverse-turning valve according to claim 1, characterized in that: the valve shaft is characterized by further comprising a platform (6) for installing the valve body (1) and a driving piece (7) for driving the valve shaft (3) to rotate, a bearing seat (8) is installed on the platform (6), and the valve shaft (3) penetrates through the bearing seat (8) and a bearing (9) is arranged between the bearing seat (8) and the valve shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011515616.4A CN112648406A (en) | 2020-12-21 | 2020-12-21 | Wear-resistant turnover plate reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011515616.4A CN112648406A (en) | 2020-12-21 | 2020-12-21 | Wear-resistant turnover plate reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112648406A true CN112648406A (en) | 2021-04-13 |
Family
ID=75360276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011515616.4A Pending CN112648406A (en) | 2020-12-21 | 2020-12-21 | Wear-resistant turnover plate reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112648406A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2443202Y (en) * | 2000-09-04 | 2001-08-15 | 湖南华源电力新技术产业有限公司 | Electrocontrolled tee valve |
| CN101260943A (en) * | 2008-04-14 | 2008-09-10 | 浪达科技（深圳）有限公司 | Low pressure drop high-temperature gas changing-over valve |
| CN201651413U (en) * | 2009-08-17 | 2010-11-24 | 江苏亿金环保设备工程有限公司 | Pneumatic three-way change valve |
| CN202526815U (en) * | 2011-11-10 | 2012-11-14 | 浙江港龙消防机械有限公司 | Tilted petal type wet alarm valve |
| CN102865391A (en) * | 2011-07-08 | 2013-01-09 | 朱奇 | Integral pre-acting alarm valve |
| CN203770745U (en) * | 2013-09-26 | 2014-08-13 | 芜湖杰诺科技有限公司 | Automatic check valve |
| CN203979430U (en) * | 2014-07-29 | 2014-12-03 | 弗络肯机械科技(上海)有限公司 | Wet alarm valve |
| CN204062024U (en) * | 2014-07-29 | 2014-12-31 | 弗络肯机械科技(上海)有限公司 | Safety check |
| CN204153237U (en) * | 2014-10-15 | 2015-02-11 | 永嘉县恒正阀门有限公司 | Safety check |
| CN104455576A (en) * | 2014-10-30 | 2015-03-25 | 芜湖杰诺科技有限公司 | Swing check valve |
| CN205937968U (en) * | 2016-08-03 | 2017-02-08 | 圣博莱阀门有限公司 | Pneumatic tee bend switching -over valve |
| CN206159562U (en) * | 2016-11-14 | 2017-05-10 | 天津银河阀门有限公司 | Board -like check valve that opens soon of combination valve |
| CN107339463A (en) * | 2017-06-26 | 2017-11-10 | 辽宁科技大学 | A kind of wear-resistant turn-plate T-junction material distributing valve of shock resistance |
| CN206904306U (en) * | 2017-06-08 | 2018-01-19 | 江苏圣泰阀门有限公司 | A kind of swing type low temperature check-valves |
| CN209990957U (en) * | 2019-06-04 | 2020-01-24 | 德维阀门铸造（苏州）股份有限公司 | Novel soft seal full open check valve |
| CN211901669U (en) * | 2020-03-27 | 2020-11-10 | 南京威普粉体工程有限公司 | Reversing three-way valve |
| CN111946857A (en) * | 2020-08-10 | 2020-11-17 | 扬州高标机械有限公司 | Chute is with sealed tee bend depiler valve that high performance material mouth is convenient for adjust |
-
2020
- 2020-12-21 CN CN202011515616.4A patent/CN112648406A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2443202Y (en) * | 2000-09-04 | 2001-08-15 | 湖南华源电力新技术产业有限公司 | Electrocontrolled tee valve |
| CN101260943A (en) * | 2008-04-14 | 2008-09-10 | 浪达科技（深圳）有限公司 | Low pressure drop high-temperature gas changing-over valve |
| CN201651413U (en) * | 2009-08-17 | 2010-11-24 | 江苏亿金环保设备工程有限公司 | Pneumatic three-way change valve |
| CN102865391A (en) * | 2011-07-08 | 2013-01-09 | 朱奇 | Integral pre-acting alarm valve |
| CN202526815U (en) * | 2011-11-10 | 2012-11-14 | 浙江港龙消防机械有限公司 | Tilted petal type wet alarm valve |
| CN203770745U (en) * | 2013-09-26 | 2014-08-13 | 芜湖杰诺科技有限公司 | Automatic check valve |
| CN203979430U (en) * | 2014-07-29 | 2014-12-03 | 弗络肯机械科技(上海)有限公司 | Wet alarm valve |
| CN204062024U (en) * | 2014-07-29 | 2014-12-31 | 弗络肯机械科技(上海)有限公司 | Safety check |
| CN204153237U (en) * | 2014-10-15 | 2015-02-11 | 永嘉县恒正阀门有限公司 | Safety check |
| CN104455576A (en) * | 2014-10-30 | 2015-03-25 | 芜湖杰诺科技有限公司 | Swing check valve |
| CN205937968U (en) * | 2016-08-03 | 2017-02-08 | 圣博莱阀门有限公司 | Pneumatic tee bend switching -over valve |
| CN206159562U (en) * | 2016-11-14 | 2017-05-10 | 天津银河阀门有限公司 | Board -like check valve that opens soon of combination valve |
| CN206904306U (en) * | 2017-06-08 | 2018-01-19 | 江苏圣泰阀门有限公司 | A kind of swing type low temperature check-valves |
| CN107339463A (en) * | 2017-06-26 | 2017-11-10 | 辽宁科技大学 | A kind of wear-resistant turn-plate T-junction material distributing valve of shock resistance |
| CN209990957U (en) * | 2019-06-04 | 2020-01-24 | 德维阀门铸造（苏州）股份有限公司 | Novel soft seal full open check valve |
| CN211901669U (en) * | 2020-03-27 | 2020-11-10 | 南京威普粉体工程有限公司 | Reversing three-way valve |
| CN111946857A (en) * | 2020-08-10 | 2020-11-17 | 扬州高标机械有限公司 | Chute is with sealed tee bend depiler valve that high performance material mouth is convenient for adjust |
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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: 20210413 |
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| RJ01 | Rejection of invention patent application after publication |