CN106382391A - Three-way planar reversing valve - Google Patents
Three-way planar reversing valve Download PDFInfo
- Publication number
- CN106382391A CN106382391A CN201610962516.3A CN201610962516A CN106382391A CN 106382391 A CN106382391 A CN 106382391A CN 201610962516 A CN201610962516 A CN 201610962516A CN 106382391 A CN106382391 A CN 106382391A
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- China
- Prior art keywords
- rotor
- stator
- rotating shaft
- hole
- valve body
- 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.)
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Classifications
-
- 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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/10—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members with special arrangements for separating the sealing faces or for pressing them together
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Abstract
The invention relates to a three-way planar reversing valve. The three-way planar reversing valve comprises a valve body, a stator, a rotor and a rotating shaft, wherein the stator, the rotor and the rotating shaft are sequentially mounted inside the valve body from top to bottom; the stator is fixedly arranged inside the valve body and forms compression-seal with the rotor; the rotor is fixedly connected with the rotating shaft and is capable of rotating inside the valve body together with the rotating shaft; the stator is provided with three connecting holes which are uniformly distributed along a center shaft; the three connecting holes are through from top to bottom and do not communicate with one another; the rotor is provided with an arc-shaped liquid guide groove which communicates with two of the three connecting holes; the contact surface of the stator and the rotor is a smooth sealing plane; the rotor and the rotating shaft are fixed by a fixing pin which is vertical to the sealing plane and can only have axial relative movement there-between; a pressing spring along the axial direction is also arranged between the rotor and the rotating shaft. Compared with the prior art, the three-way planar reversing valve disclosed by the invention adopts planar seal, an elastic force can be loaded on a sealing surface more uniformly, and a better sealing effect can be realized; meanwhile, a limiting pin and the like are used for limiting the rotation angle, so the problem that blind rotation may cause incorrect-position rotation and the like can be solved.
Description
Technical field
The present invention relates to a kind of threeway plane reversal valve, especially relate to a kind of Zi Dongkashi moisture determination instrument that is applied to
Threeway plane reversal valve.
Background technology
Ka Shi moisture determination instrument is as laboratory analytical instrument in the row such as oil, chemical industry, medicine, leather, cold-producing medium, grain
Industry is widely used in the detection of water content in the detection of water content and final products in product raw material.Karl Fischer solution is
The titrant of Ka Shi moisture determination instrument, has compared with severe corrosive and toxic, the titration manually of traditional glass burette manual
Ka Shi moisture determination instrument, due to filling karl Fischer solution or discharge waste reaction solution all in unlimited environment in titration process
In, making toxic substance in titrant be diffused in the air affects the healthy of experimenter, so Shou Dongkashi moisture determination instrument
The demand to environmental protection for the lab analysis far can not be met, progressively by market.
Carry out automatic sampling sample introduction as karl Fischer solution under total enclosing state and not with experimenter's directly contact
Semi-automatic, full-automatic Ka Shi moisture determination instrument has more and more been applied in laboratory moisture analysis in recent years, for control
Piston in formulation amount syringe cylinder does upper and lower piston movement to extract or to inject the pass that karl Fischer solution participates in drop reaction
Key member ----fluid path three-way diverter valve, its sealing quality, corrosion resistance quality, the patency degree of fluid path, uses the longevity
Life etc. all directly affects the quality of instrument.
Traditional three-way diverter valve being applied to Ka Shi moisture determination instrument adopts conical surface seal mode.Holddown spring is by compressing
Circle compression produces compression and forms upper and lower elastic force, due to direction and the conical surface out of plumb of the active force of elastic force, holddown spring
Little part elastic force act on conical surface seal face, easily cause conical surface seal face seal pressure and not cause in fluid path pipeline
Liquid spill between the body cavity wall and valve element conical outer wall of three-way diverter valve, cause the leakage of three-way diverter valve.
In addition, in existing three-way diverter valve, because valve element can be rotated with 360 degree in body cavity, with control three
When the motor device that logical reversal valve rotates connects, aperture para-position connection is highly difficult, easily causes install failure.
Content of the invention
The purpose of the present invention is exactly to overcome the defect of above-mentioned prior art presence to provide a kind of threeway plane commutation
Valve.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of threeway plane reversal valve, including valve body, and be sequentially arranged at from top to bottom stator in valve body, rotor and
Rotating shaft, described stator is fixedly installed in valve body, and compresses sealing with rotor, and described rotor is fixedly connected with rotating shaft, and
Rotate in valve body with rotating shaft, stator be provided with and connect hole along uniform three of central shaft, described three connect hole up/down perforation and
Mutually do not connect, the arc intake chute for connecting described three two connecing in hole be provided with rotor, during work, rotor with turn
Axle rotates, and arc intake chute is connected different two and connect hole, realizes commutation, and described stator is smooth with the contact surface of rotor
Sealing plane, fixed by the steady pin perpendicular to sealing plane between described rotor and rotating shaft, and make between the two
It is only capable of axially opposing movement, be additionally provided with holddown spring vertically between rotor and rotating shaft.
Preferably, the upper surface of described stator is " middle high, periphery is low " cone structure, also adopts on stator upper surface
It is fixed with fixed spiro, radially fixed also by dowel pins pump ring between described stator side and valve interior wall.
It is furthermore preferred that the taper of described cone structure is 7～8 °.So it is designed with two advantages：(1) meeting threeway
On the premise of plane reversal valve compact, the size of the diameter of the sealing surface of rotor and stator is limited in certain limit, is
Guarantee there is more preferable flat seal effect, small through hole must maintain a certain distance use from sealing surface extension on seal stator face
In tight seal, aperture must be split into inside inclined hole, and this invention is designed to 7～8 °.(2) need on hickey to use nipple
Fluid path pipeline is connected with ancillary equipment, general nipple is directly to be screwed on and tightened with two fingers, and such design is also
Can make the nipple outwards oblique separate, expand the mutual distance of three nipples, convenient operate.
It is furthermore preferred that the side of described stator is provided with locating slot vertically, described valve interior wall runs through and is provided with
Stretch into the dowel pins pump ring of described locating slot, and make radially fixed between valve body and stator.
Preferably, described stator is processed by PCTFE, and described rotor is processed by PTFE, and it is fixed to be located at respectively
The fineness of two sealing planes on son and rotor all reaches more than 0.8.
Preferably, the top of described rotating shaft is provided with T-shaped hole slot, and described rotor and holddown spring are placed in T from top to bottom
In type hole groove, the alignment pin installing hole for placing rotor fixed position pin is also machined with the step of T-shaped hole slot, described rotor
Side be machined with half slot,
Preferably, described half slot and the position of alignment pin installing hole meet：It is placed in the rotor that in the hole installed by alignment pin
Alignment pin stretches in half slot, and blocks described rotor.
Preferably, the radian of described arc intake chute is 120 °, and its size meets：Arc intake chute just can turn on fixed
The adjacent hole of any two on son.
Preferably, the positive stop with stopper slot, the lower side of described rotating shaft are formed in the processing of the bottom of valve body
It is provided with the spacer pin stretching in stopper slot, the described size of stopper slot is met with position：
During axis of rotation, when spacer pin touches two ends of stopper slot respectively, the arc intake chute of rotor is just complete
Become two different connections connecing hole.
Preferably, described connect top hickey and the lower through-hole that hole includes, described top hickey is vertical
And connecting stator upper surface, described lower through-hole extends downwardly along described top hickey central axis direction, and is communicated to
The sealing plane of described stator.
The three-way diverter valve of the present invention when mounted, first holddown spring is installed in the inner chamber of rotating shaft, rotor fixed position pin
In the installing hole of insertion rotating shaft internal chamber wall, the sealing plane of rotor upwards, put into and turn by the half slot be aligned rotor fixed position pin of side
In axle inner chamber, above-mentioned mounted rotating assembly is vertically put into body cavity, in the screwed hole of rotating shaft lower end, installs limit
Position pin, installs into dowel pins pump ring, the sealing plane of stator is downward, stator in two relative screwed holes of the side of valve body
Two locating slots put into body cavity along dowel pins pump ring, with fixed spiro, stator are inwardly tightened, and so that holddown spring is compressed
Deformation, makes stator and the sealing surface of rotor fit tightly completely using holddown spring elastic force upwards, forms flat seal.
Compared with prior art, the present invention has advantages below：
(1) the threeway plane reversal valve of the present invention adopts flat seal mode, the compression elasticity perpendicular acting of holddown spring
In the sealing plane of stator and the sealing plane of rotor, elastic force is fully loaded on sealing surface rather than the component of elastic force loads on
Sealing surface, is more prone to seal.
(2) three on the stator of threeway plane reversal valve connect the center in seal stator face for the pore size distribution, by rotor
On arc intake chute form fluid path, the elastic force of holddown spring is evenly distributed in sealing surface, and the air outside sealing surface can not
Entering sealing surface makes fluid path pipeline air inlet affect testing precision.
(3) stator of threeway plane reversal valve and rotor are absolute construction, and the processing of the sealing plane of stator and rotor is relatively
Easily reach smoothness requirements.
(4) holddown spring of threeway plane reversal valve of the present invention and rotor are installed in rotating shaft, and rotating shaft is changed rotating
To during action, the dowel pins pump ring rotor driven in rotating shaft rotates, and the relative position of rotor and holddown spring is constant, solves pressure
The force variation of tight spring makes the inadequate problem of thrust.
(5) rotating shaft positive stop installed by the threeway plane reversal valve of the present invention, when can guarantee that each rotation, goes to limiting block
The left limit end of block, spacer pin encounters the left end of positive stop, two hickey phases in three on stator hickey
Logical, turn right 120 degree, spacer pin encounters the right-hand member of positive stop, one of two hickeys are connect with the 3rd screw thread
Mouth communicates, and realizes path conversion, solves the problems, such as that blind turn may make rotation not in place, make fluid path handoff failure.
Brief description
Fig. 1 is the structural representation of the three-way diverter valve of the present invention；
Fig. 2 is the A-A of Fig. 1 to cross-sectional schematic；
Fig. 3 is the structural representation of the stator of the present invention；
Fig. 4 is the B-B direction cross-sectional schematic of Fig. 3；
Fig. 5 is the structural representation of the rotor of the present invention；
Fig. 6 is the C-C of Fig. 5 to cross-sectional schematic；
In figure, 1- fixed spiro, 2- stator, 3- valve body, 4- dowel pins pump ring, 5- rotor, 6- rotor fixed position pin, 7- compresses
Spring, 8- rotating shaft, 9- positive stop, 10- spacer pin, 11- top hickey, 12- lower through-hole, 13- seal stator plane,
14- locating slot, 15- rotor seal plane, 16- arc intake chute, 17- half slot.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of three-way diverter valve being applied to Ka Shi moisture determination instrument, its structure is as shown in figure 1, by valve body 3, stator 2, turn
Son 5, holddown spring 7, rotating shaft 8, fixed spiro 1, dowel pins pump ring 4, rotor fixed position pin 6, spacer pin 10 and 9 groups of positive stop
Become.
As shown in figure 3, stator 2 is processed from PCTFE polytrifluorochloroethylene material, PCTFE has good corrosion resistant
Corrosion and machining property, the upper surface of stator is designed to the low cone structure in middle high two ends, and taper is 7～8 degree, in upper end
On face, 120 degree of indexing of central angle are designed with three top hickeys 11 vertical with upper surface, in three top hickeys
The central axis direction of 11 bottoms respectively has the lower through-hole 12 of a 1～1.5mm, and three lower through-hole are communicated to seal stator plane
13, and do not connect each other, the fineness of seal stator plane 13 must reach more than 0.8.
As shown in figure 4, the side relative position of stator 2 has a locating slot 14, the width of locating slot 14 is about 3.5mm,
Depth is about 2.5mm～3mm.
As shown in Figure 5 and Figure 6, rotor 5 is processed by PTFE politef, and the upper surface of rotor 5 is rotor seal plane
15, its fineness must reach more than 0.8, and rotor seal plane 15 has an arc intake chute 16, the width of arc intake chute 16
It is respectively 2mm with depth, the radian of arc intake chute 16 is 120 degree,
The side processing of rotor 5 forms the half slot 17 of a diameter of 3.1mm.
As shown in Fig. 2 the processing of valve body 3 bottom forms the positive stop 9 with stopper slot, stopper slot is 120 degree of radians, valve
Two opposite faces of the side of body 3 respectively process a dowel pins pump ring location hole, for fixed stator alignment pin 4.
Rotating shaft 8 inner chamber is T-shape hole slot, and processing on the step of T-shape hole slot forms rotor fixed position pin installing hole, position
Rotor fixed position pin 6 just can be made to stretch in half slot 17 and block rotor 5.
Holddown spring 7 is installed to the T-slot of rotating shaft 8, and rotor fixed position pin 6 inserts the rotor fixed position pin peace of rotating shaft 8 internal chamber wall
In dress hole, rotor seal plane 15 upwards, put in rotating shaft 8 inner chamber, above-mentioned by the half slot 17 be aligned rotor fixed position pin 6 of side
Mounted rotating assembly vertically puts into valve body 3 inner chamber, installs spacer pin 10, spacer pin in the screwed hole of rotating shaft 8 lower end
In 10 stopper slots stretching into positive stop 9, two relative screwed holes of the side of valve body 3 load dowel pins pump ring 4, stator
Downwards, two locating slots 14 of stator 2 put into valve body 3 inner chamber along stator positioning slightly 4 for sealing plane 13, with fixed spiro 1
Stator 2 is inwardly tightened, and makes holddown spring 7 compression, makes stator 2 and the sealing of rotor 5 using holddown spring 7 elastic force upwards
Plane fits tightly completely, forms flat seal.
The above-mentioned description to embodiment is to be understood that and use invention for ease of those skilled in the art.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
, according to the announcement of the present invention, the improvement made without departing from scope and modification all should be the present invention's for field technique personnel
Within protection domain.
Claims (9)
1. a kind of threeway plane reversal valve, including valve body (3), and is sequentially arranged at the stator in valve body (3) from top to bottom
(2), rotor (5) and rotating shaft (8), described stator (2) is fixedly installed in valve body (3), and compresses sealing, institute with rotor (5)
The rotor (5) stated is fixedly connected with rotating shaft (8), and rotates in valve body (3) with rotating shaft (8), is provided with along center on stator (2)
Uniform three of axle connect hole, and described three connect hole up/down perforation and mutually do not connect, and are provided with for connecting described three on rotor (5)
The arc intake chute (16) of individual two connecing in hole, during work, rotor (5) rotates with rotating shaft (8), and arc intake chute (16) is connected
Different two connect hole, realize commutation it is characterised in that the contact surface of described stator (2) and rotor (5) is smooth close
Envelope plane, fix by the steady pin perpendicular to sealing plane between described rotor (5) and rotating shaft (8), and so that both it
Between be only capable of axially opposing movement, be additionally provided with holddown spring (7) vertically between rotor (5) and rotating shaft (8).
2. a kind of threeway plane reversal valve according to claim 1 is it is characterised in that the upper surface of described stator (2)
For " middle high, periphery is low " cone structure, stator (2) upper surface is also fixed using fixed spiro (2), described determines
Radially fixed also by dowel pins pump ring (4) between sub (2) side and valve body (3) inwall.
3. a kind of threeway plane reversal valve according to claim 2 is it is characterised in that the taper of described cone structure is
7～8 °.
4. a kind of threeway plane reversal valve according to claim 2 is it is characterised in that the side of described stator (2) sets
There is locating slot (14) vertically, described valve body (3) inwall runs through and is provided with the stator positioning stretching into described locating slot (14)
Pin (4), and make radially fixed between valve body (3) and stator (2).
5. a kind of threeway plane reversal valve according to claim 1 it is characterised in that described stator (2) by PCTFE plus
Work forms, and described rotor (5) is processed by PTFE, two sealing planes being located on stator (2) and rotor (5) respectively
Fineness all reaches more than 0.8.
6. a kind of threeway plane reversal valve according to claim 1 is it is characterised in that the top of described rotating shaft (8) sets
There is T-shaped hole slot, described rotor (5) and holddown spring (7) are placed in T-shaped hole slot from top to bottom, on the step of T-shaped hole slot also
It is machined with the alignment pin installing hole for placing rotor fixed position pin (6), the side of described rotor (5) is machined with half slot
(17),
Described half slot (17) is met with the position of alignment pin installing hole：It is placed in the rotor fixed position pin that in the hole installed by alignment pin
(6) stretch in half slot (17), and block described rotor (5).
7. a kind of threeway plane reversal valve according to claim 1 is it is characterised in that described arc intake chute (16)
Radian is 120 °, and its size meets：Arc intake chute (16) just can turn on the adjacent hole of any two on stator (2).
8. a kind of threeway plane reversal valve according to claim 1 is it is characterised in that process shape in the bottom of valve body (3)
Become the positive stop (9) with stopper slot, the lower side of described rotating shaft (8) is provided with the spacer pin stretching in stopper slot
(10), the size of described stopper slot and position meet：
When rotating shaft (8) rotates, when spacer pin (10) touches two ends of stopper slot respectively, the arc intake chute of rotor (5)
(16) just complete the connection that different two connect hole.
9. a kind of threeway plane reversal valve according to claim 1 is it is characterised in that described connects the top spiral shell that hole includes
Stricture of vagina interface (11) and lower through-hole (12), described top hickey (11) is vertical and connects stator (2) upper surface, described
Lower through-hole (12) extends downwardly along described top hickey (11) central axis direction, and is communicated to the close of described stator (2)
Envelope plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962516.3A CN106382391A (en) | 2016-11-04 | 2016-11-04 | Three-way planar reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962516.3A CN106382391A (en) | 2016-11-04 | 2016-11-04 | Three-way planar reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106382391A true CN106382391A (en) | 2017-02-08 |
Family
ID=57957264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610962516.3A Pending CN106382391A (en) | 2016-11-04 | 2016-11-04 | Three-way planar reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382391A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662196A (en) * | 2018-07-20 | 2018-10-16 | 广东格匠实业有限公司 | A kind of steam generating device of back flush |
| EP3779252A4 (en) * | 2018-03-27 | 2022-01-05 | Shimadzu Corporation | Multiport valve for water quality analyzer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804522Y (en) * | 2004-12-13 | 2006-08-09 | 江苏江分电分析仪器有限公司 | Mini plane reversal valve |
| CN2878829Y (en) * | 2005-11-30 | 2007-03-14 | 竺明君 | Manual rotary valve |
| WO2012083895A1 (en) * | 2010-12-21 | 2012-06-28 | Li Wanhong | Constant-pressure flat-seal multiplex valve |
| CN104482249A (en) * | 2014-11-19 | 2015-04-01 | 苏州福润机械有限公司 | Light vacuum rotary valve based on large-caliber joints |
-
2016
- 2016-11-04 CN CN201610962516.3A patent/CN106382391A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804522Y (en) * | 2004-12-13 | 2006-08-09 | 江苏江分电分析仪器有限公司 | Mini plane reversal valve |
| CN2878829Y (en) * | 2005-11-30 | 2007-03-14 | 竺明君 | Manual rotary valve |
| WO2012083895A1 (en) * | 2010-12-21 | 2012-06-28 | Li Wanhong | Constant-pressure flat-seal multiplex valve |
| CN104482249A (en) * | 2014-11-19 | 2015-04-01 | 苏州福润机械有限公司 | Light vacuum rotary valve based on large-caliber joints |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3779252A4 (en) * | 2018-03-27 | 2022-01-05 | Shimadzu Corporation | Multiport valve for water quality analyzer |
| US11781660B2 (en) | 2018-03-27 | 2023-10-10 | Shimadzu Corporation | Multiport valve for water quality analyzer |
| CN108662196A (en) * | 2018-07-20 | 2018-10-16 | 广东格匠实业有限公司 | A kind of steam generating device of back flush |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 200062 Shanghai city Putuo District Yunling Road No. 345 Applicant after: Shanghai Chemical Research Institute Co., Ltd. Address before: 200062 Shanghai city Putuo District Yunling Road No. 345 Applicant before: Shanghai Research Institute of Chemical Industry |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |