CN106195327B - Pneumatic cut-off reversal valve - Google Patents
Pneumatic cut-off reversal valve Download PDFInfo
- Publication number
- CN106195327B CN106195327B CN201610718455.6A CN201610718455A CN106195327B CN 106195327 B CN106195327 B CN 106195327B CN 201610718455 A CN201610718455 A CN 201610718455A CN 106195327 B CN106195327 B CN 106195327B
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- China
- Prior art keywords
- block
- valve body
- discharge port
- spool
- valve
- 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
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
Abstract
The present invention relates to pneumatic cut-off reversal valves, including valve seat, upper valve body, lower valve body, in upper valve body and lower valve body sliding and can be around the spool of own rotation, with valve spool and stretch out the valve rod of valve body, the Pneumatic assembly of driving stem movement, the upper valve body is respectively provided with the feed inlet and discharge port of liquid medium inflow or outflow with lower valve body side, the spool is equipped with the upper end flap that can be tightly connected respectively with feed inlet and discharge port and lower end flap, the orifice union of the liquid medium for the discharge port outflow that throttles is installed on the inside of the discharge port, the orifice union includes restriction and throttling unit, discharge port is separated into medium throttle and medium all-pass portion by the orifice union.
Description
Technical field
The present invention relates to valve field, especially a kind of pneumatic cut-off reversal valve.
Background technology
Cut-off reversal valve is the directional control valve for having two or more liquid forms and more than two hydraulic fluid ports.It is to realize hydraulic pressure
Communication, cut-out and the commutation of oil stream and discharge degree and the valve of sequentially-operating control.Wherein, cut-off reversal valve is according to drive
Dynamic principle difference can be respectively divided into pneumatic cut-off reversal valve, manual shutoff reversal valve, electromagnetism cut-off reversal valve.And each reversal valve
The big Supreme Being of used sealing principle is identical.Such as Patent No. CN201320654988, patent name commutate for manual shutoff
The existing cut-off reversal valve being previously mentioned in valve includes the valve seat of mutual unicom and valve body at different levels connects and composes, and valve body is equipped with
Inlet port and outlet port, the valve rod in valve seat pass through each valve body, and the flap on valve rod matches with entrance end, by valve rod
Slip drive the flap to be sealed with each port.Wherein, the structure function of discharge port is more single, can only realize single
The medium of flow velocity flows outwardly, if it is desired to increasing throttling function, must just be adapted to a kind of throttle valve again, such set-up mode is not
It is more inconvenient only on using, and reversal valve and throttle valve are required for set corresponding interface, increase larger cost.
On the other hand, the sealing means wherein between flap and valve body are sealed using face, although this face sealing to lean
Realization method is relatively simple, and sealing effect is also preferable, but is influenced in some and external force higher on valve liquid control accuracy
Under larger use environment, the flap of spool is once detached from valve body, and face sealing is just unable to reach desired effect, so as to cause valve
The liquid of intracavitary mutually circulates, and stability is poor.So some, which pneumatically end, would generally set a compensation dress on reversal valve
It puts, which is usually spring, and reversal valve is compensated using the opposition of spring.So as to make some external force smaller
In the case of, the sealing effect of flap is more stablized.But spring is as a vulnerable part, in long-term and high load capacity use
Often will appear damage in the process, service life is significantly shorter than the service life of valve, not only results in the waste of material, and
And maintenance cost can be increased.
Invention content
The problem to be solved in the present invention is to provide one kind and carries throttling function, and the cut-off reversal valve of good seal performance.
In order to solve the above technical problems, including valve seat, upper valve body, lower valve body slides simultaneously in upper valve body and lower valve body
With valve spool and the valve rod of valve body, the Pneumatic assembly of driving stem movement, the upper valve can be stretched out around the spool of own rotation
Body is respectively provided with the feed inlet and discharge port of liquid medium inflow or outflow with lower valve body side, and the spool is equipped with
The upper end flap and lower end flap that can be tightly connected respectively with feed inlet and discharge port, the discharge port inside are fixed useful
In the orifice union of the liquid medium of throttling discharge port outflow, the orifice union includes restriction and throttling unit, described
Discharge port is separated into medium throttle and medium all-pass portion by orifice union, and being additionally provided between the valve body and orifice union can
The control assembly of throttle and all-pass portion break-make is controlled, the control assembly includes linkage end and control terminal, the control group
The linkage end of part is connect with valve spool, and the control terminal of the control assembly includes the first control terminal and the second control terminal, institute
State the first control terminal and the second control terminal controls control throttle and the liquid in all-pass portion to flow to respectively, and control assembly with
When valve core rotation, when the first control terminal is by throttle unicom, the second control terminal separates all-pass portion, the lower end flap point
The connector being flexibly connected with lower valve body is not equipped with the arranged on left and right sides side wall place of leaning of lower valve body, is set in the lower valve body
There is a slot being inserted into for connector, the connector is equipped with for by the close-fitting unit of connector and slot close-fitting.
After employing above structure, discharge port is separated into medium throttle and medium all-pass portion by orifice union, is passed through
Throttling function and medium all-pass portion in medium throttle by medium all by function divide, discharge port can be flowed out
Medium adds the function of a throttling again, when needing throttling, throttle only need to be connected, when needing all-pass, then to close
Throttle, conducting all-pass portion, and the setting of control assembly then ensure that the logical relation for realizing above-mentioned break-make.Another aspect spool
It is mutually connected with orifice union, and spool can rotate in valve body, so, when valve body rotates, the first control terminal and second
Control terminal will be to corresponding throttle or all-pass portion break-make.
As a further improvement on the present invention, the restriction on the orifice union is towards spool side, and the throttling is singly
Member includes the case body being wholely set with restriction and the Throttle module being arranged in case body.
After employing above structure, the setting of restriction and Throttle module can be such that the medium entered in the restriction all obtains
Throttling function.Preferably control the uninterrupted to flowing out medium.
As a further improvement on the present invention, the Throttle module include setting with case body in moving mass and
The control block of the moving mass relative displacement is controlled, the moving mass includes sliding block and fixed block, the fixed block fixed setting
In in the lower wall of case body inside, the control block is to be set to the tooth block that hull outside is located on the side wall of discharge port, outside
The tooth road coordinated with tooth block gear is equipped on shell case inside upper side wall with tooth block corresponding section, the sliding block connects with the linkage of tooth block
Connect, and the position of sliding block and fixed block and size are set, when so that the sliding block is slid onto on fixed block, sliding block and fixed block it
Between can contact with each other, and the medium flowed into from restriction is blocked before discharge port, face that the sliding block is contacted with fixed block
It is equipped with the rubber face with leakproofness between enhancing fixed block and sliding block.
The sliding block that can be slid using one after employing above structure and a fixed block, by control slide block with
Relative position between fixed block, when sliding block is all overlapped with fixed block, orifice union is completely plugged, when sliding block and fixed block
Between relative distance it is more and more remote when, between by flow also can be increasing.
As a further improvement on the present invention, the control assembly includes being movably connected on upper and lower the two of discharge port inner wall
It holds and can be around the shaft of itself rotation, the shaft includes upper surface and lower face, and the vertical lower face in the upper surface is set,
The shape and size of the upper surface and lower face can block the medium channel between spool and discharge port completely respectively.
After employing above structure, the control assembly is can be around the shaft of itself rotation, and shaft is divided into two ends
Face, using being vertically arranged for upper surface and lower face, when can simply realize that upper surface blocks, lower face is opened, lower face
During unlatching, upper surface blocks.
As a further improvement on the present invention, the linkage end of the control assembly is the first linkage being set on upper surface
Block, the spool are equipped with the second linkage block, and first linkage block is set in the rotation projection of the second linkage block of spool.
After employing above structure, linkage block is set on the upper surface of shaft and spool respectively, when valve core rotation,
Second linkage block also rotates therewith, while first linkage block that links again, so as to rotate shaft, plays the role of controlling break-make.
As a further improvement on the present invention, the connector is vertically located in flap surface for one end, and one end is inserted vertically
Enter the inserted block of slot, the close-fitting unit is fixedly installed on inserted block.
After employing above structure, the setting structure of inserted block is relatively simple, and in the process of grafting, and inserted block is with inserting
The cooperation of slot also allows user that can more easily use inserted block.
As a further improvement on the present invention, the close-fitting unit is the rubber ring being sheathed on inserted block.
After employing above structure, due to the physical characteristic of rubber ring in itself, the journey being squeezed on a surface of an
Degree is higher, and frictional force is bigger, so, only it need to utilize rubber ring that can play the role of limiting close-fitting.
As a further improvement on the present invention, the slot is U-shaped slot, and the cross-sectional area of the U-shaped slot is along slotting
Oral area is gradually reduced to slot bottom, and when the diameter setting of the rubber ring can make inserted block insertion U-shaped slot, rubber ring can be clamped
In U-shaped slot.
After employing above structure, since the work response time of valve is a very important measurement valve working performance
Standard, when rubber ring and the slot close-fitting for being provided with limiting close-fitting effect, the work of valve can be influenced to a certain extent
Response time, so, when there is provided after U-shaped slot, the way of contact of rubber ring and slot is point contact, only needs valve opening power
The sufficiently large frictional force that can overcome rubber ring, so as to contact of the instantaneous touch rubber ring with slot.It ensure that valve working is rung
Between seasonable.
As a further improvement on the present invention, the rubber material of the rubber ring is thermoplastic elastomer.
After employing above structure, due to the physical characteristic of thermoplastic elastomer, keep rubbery state at normal temperatures and
Plastic state is kept under high temperature, so, it is possible to rubber not only undergoes no deterioration under some conditions of high temperature well, but also meeting
So that the stability of rubber is more preferable.
Description of the drawings
Fig. 1 show the front view of the pneumatic cut-off reversal valve of throttling；
Fig. 2 show the side sectional view of the pneumatic cut-off reversal valve of throttling；
Fig. 3 show orifice union front view；
Fig. 4 show the rearview of the pneumatic cut-off reversal valve of throttling；
Fig. 5 show control assembly front view；
Fig. 6 show pneumatic cut-off reversal valve front section view；
Specific embodiment
As shown in drawings, including valve seat 1, upper valve body 2, lower valve body 3 slides and can be around in upper valve body 2 and lower valve body 3
The spool 4 of own rotation with spool 4 links and stretches out the valve rod 5 of valve body, the Pneumatic assembly that driving stem 5 moves, the upper valve
Body 2 is respectively provided with liquid medium inflow or the feed inlet 21 of outflow and discharge port 31, the spool with 3 side of lower valve body
4 are equipped with the upper end flap 6 that can be tightly connected respectively with feed inlet 21 and discharge port 31 and lower end flap 7, the discharging
31 inside of mouth is installed with the orifice union 8 of the liquid medium for the discharge port outflow that throttles, and the orifice union includes restriction
81 and throttling unit 82, the orifice union discharge port is separated into medium throttle 311 and medium all-pass portion 312, institute
State the control assembly 9 that controllable throttle and all-pass portion break-make are additionally provided between lower valve body 3 and orifice union, the control assembly
9 connect including linkage end 91 and control terminal 92, the linkage end of the control assembly with valve spool, the control assembly 9
Control terminal includes the first control terminal and the second control terminal, and first control terminal controls control to throttle respectively with the second control terminal
The liquid in portion and all-pass portion flows to, and when control assembly is with valve core rotation, when the first control terminal is by throttle unicom,
Second control terminal separates all-pass portion.Discharge port 31 is separated into medium throttle 311 and medium all-pass portion by orifice union
312, by the throttling function in medium throttle 311 and medium all-pass portion by medium all by function divide, can will
The medium that discharge port 31 flows out adds the function of a throttling again, and when needing throttling, throttle only need to be connected, complete when needing
When logical, then throttle, conducting all-pass portion are closed, and the setting of control assembly then ensure that the logic for realizing above-mentioned break-make is closed
System.Another aspect spool is mutually connected with orifice union, and spool can rotate in valve body, so, when valve body rotates, the
One control terminal will be to corresponding throttle or all-pass portion break-make with the second control terminal.
Towards spool side, the throttling unit 82 includes and 81 one of restriction restriction 81 on the orifice union
The case body of setting and the Throttle module 821 being arranged in case body.The setting of restriction 81 and Throttle module 821
The medium entered in the restriction can be made all to obtain throttling function.Preferably control the uninterrupted to flowing out medium.It is described
Throttle module 821 includes the moving mass 8211 in setting and case body and controls the control of 8211 relative displacement of moving mass
Clamp dog 8212, the moving mass include sliding block 82111 and fixed block 82112, and the fixed block is fixedly installed on case body
In the lower wall of inside, the control block 8212 is to be set to the tooth block 8212 that hull outside is located on the side wall of discharge port, shell
The tooth road 10 coordinated with tooth block gear, the sliding block and tooth block 8212 are equipped on case inside upper side wall with tooth block corresponding section
Dynamic connection, and the position and size of sliding block and fixed block are set, when so that the sliding block is slid onto on fixed block, sliding block 82111
It can contact with each other, and the medium flowed into from restriction be blocked before discharge port, the sliding block between fixed block 82112
82111 faces contacted with fixed block 82112 are equipped with the rubber with leakproofness between enhancing fixed block 82112 and sliding block 82111
Glue surface.The sliding block that can be slid using one and a fixed block, by the relative position between control slide block and fixed block,
When sliding block is all overlapped with fixed block, orifice union is completely plugged, when opposite between sliding block 82111 and fixed block 82112
Distance it is more and more remote when, between by flow also can be increasing.
The upper/lower terminal that the control assembly 9 includes being movably connected on discharge port inner wall simultaneously can be around the shaft of itself rotation
91, the shaft includes upper surface 911 and lower face 912, and the vertical lower face 912 in the upper surface is set, the upper surface
911 and the shape and size of lower face 912 can block medium channel between spool and discharge port completely respectively.The control
Component processed is can be around the shaft of itself rotation, and shaft is divided into two end faces, using being vertically arranged for upper surface and lower face,
When can simply realize that upper surface blocks, lower face is opened, and when lower face is opened, upper surface blocks.The control assembly
Linkage end is the first linkage block 11 being set on upper surface, and the spool is equipped with the second linkage block 12, first linkage
Block is set in the rotation projection of the second linkage block of spool.Linkage block is set on the upper surface of shaft and spool respectively,
When valve core rotation, the second linkage block also rotates therewith, while first linkage block that links again, so as to rotate shaft, plays control
The effect of break-make processed.
The lower valve body be equipped with for connector be inserted into slot 13, the connector be equipped with for by connector with insert
The close-fitting unit of slot close-fitting.Connector and slot 13 are equipped between lower Disc and valve body, passes through setting for connector and slot 13
Protection spool is can be very good in the case where being acted on by certain external force even if putting, and can also be maintained current state well, be increased
Add the stability of entire valve operation, and using the setting of close-fitting unit, instead of original spring part, overcome spring part
The technical issues of rapid wear.The connector is vertically located in lower end flap surface for one end, and one end is inserted vertically into inserting for slot 13
Block 14, the close-fitting unit are fixedly installed on inserted block.The setting structure of inserted block is relatively simple, and works as in the process of grafting
In, inserted block 13 and the cooperation of slot 14 also allow user that can more easily use inserted block.The close-fitting unit is slotting to be sheathed on
Rubber ring 15 on block.Due to the physical characteristic of of rubber ring 15 itself, the degree being squeezed on a surface of an is higher,
Frictional force is bigger, so, only it need to utilize rubber ring that can play the role of limiting close-fitting.The slot be U-shaped slot, the U
The cross-sectional area of type slot is gradually reduced along socket to slot bottom, and the diameter setting of the rubber ring can be inserted into inserted block
During U-shaped slot, rubber ring can be connected in U-shaped slot.Since the work response time of valve is a very important measurement valve
The standard of door working performance when being provided with the rubber ring of limiting close-fitting effect with slot close-fitting, can influence to a certain extent
The work response time of valve, so, when there is provided after U-shaped slot, the way of contact of rubber ring and slot is point contact, is only needed
The sufficiently large frictional force that can overcome rubber ring of valve opening power, so as to contact of the instantaneous touch rubber ring 15 with slot.Ensure
Valve working response time.The rubber material of the rubber ring is thermoplastic elastomer.Due to the physical characteristic of thermoplastic elastomer,
It keeps rubbery state and keeps plastic state at high temperature at normal temperatures, so, it is possible to well in some conditions of high temperature
Lower rubber not only undergoes no deterioration, but also can so that the stability of rubber is more preferable.
Claims (9)
1. pneumatically cut-off reversal valve, including valve seat, upper valve body, lower valve body, the sliding and can be around oneself in upper valve body and lower valve body
The spool of body rotation with valve spool and stretches out the valve rod of valve body, and the Pneumatic assembly of driving stem movement, the upper valve body is under
Valve body side is respectively provided with the feed inlet and discharge port that liquid medium is flowed into or flowed out, and the spool is equipped with respectively can
The upper end flap and lower end flap being tightly connected with feed inlet and discharge port, it is characterised in that：It is solid on the inside of the discharge port
Orifice union equipped with the liquid medium for the discharge port outflow that throttles, the orifice union includes restriction and throttling is single
Discharge port is separated into throttle and all-pass portion by member, the orifice union, and being additionally provided between the valve body and orifice union can
The control assembly of throttle and all-pass portion break-make is controlled, the control assembly includes linkage end and control terminal, the control group
The linkage end of part is connect with valve spool, and the control terminal of the control assembly includes the first control terminal and the second control terminal, institute
State the first control terminal controls throttle and the liquid in all-pass portion to flow to, and in control assembly with valve respectively with the second control terminal
Core rotate when, when the first control terminal is by throttle unicom, the second control terminal separates all-pass portion, the lower end flap respectively with
The arranged on left and right sides side wall place of leaning of lower valve body is equipped with the connector being flexibly connected with lower valve body, and the lower valve body, which is equipped with, to be supplied
The slot that connector is inserted into, the connector are equipped with for by the close-fitting unit of connector and slot close-fitting.
2. pneumatic cut-off reversal valve according to claim 1, it is characterised in that：Restriction direction on the orifice union
Spool side, the throttling unit include the case body being wholely set with restriction and the section being arranged in case body
Flow module.
3. pneumatic cut-off reversal valve according to claim 2, it is characterised in that：The Throttle module includes setting and shell
Moving mass in housing and the control block for controlling the moving mass relative displacement, the moving mass include sliding block and fixed block,
The fixed block is fixedly installed on the inside of case body in lower wall, and the control block is located at discharge port to be set to hull outside
Side wall on tooth block, be equipped with the tooth road coordinated with tooth block gear, institute with tooth block corresponding section on upper side wall on the inside of case body
It states sliding block to be connected with tooth block, and the position and size of sliding block and fixed block are set, and sliding block can be made to be slid onto fixed block
It when upper, can contact with each other, and the medium flowed into from restriction be blocked before discharge port, the cunning between sliding block and fixed block
The face that block is contacted with fixed block is equipped with the rubber face with leakproofness between enhancing fixed block and sliding block.
4. pneumatic cut-off reversal valve according to claim 1, it is characterised in that：The control assembly includes being movably connected on
The upper/lower terminal of discharge port inner wall simultaneously can around itself rotation shaft, the shaft include upper surface and lower face, it is described on
The vertical lower face setting in end face, the shape and size of the upper surface and lower face can block spool and discharging completely respectively
Medium channel between mouthful.
5. pneumatic cut-off reversal valve according to claim 4, it is characterised in that：The linkage end of the control assembly is setting
In the first linkage block on upper surface, the spool is equipped with the second linkage block, and first linkage block is set to the of spool
In the rotation projection of two linkage blocks.
6. pneumatic cut-off reversal valve according to claim 1, it is characterised in that：The connector is vertically located in for one end
Flap surface, one end are inserted vertically into the inserted block of slot, and the close-fitting unit is fixedly installed on inserted block.
7. pneumatic cut-off reversal valve according to claim 6, it is characterised in that：The close-fitting unit is is sheathed on inserted block
Rubber ring.
8. pneumatic cut-off reversal valve according to claim 7, it is characterised in that：The slot is U-shaped slot, described U-shaped
The cross-sectional area of slot is gradually reduced along socket to slot bottom, and the diameter setting of the rubber ring can make inserted block be inserted into U
During type slot, rubber ring can be connected in U-shaped slot.
9. pneumatic cut-off reversal valve according to claim 8, it is characterised in that：The rubber material of the rubber ring is thermoplastic
Property rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718455.6A CN106195327B (en) | 2016-08-17 | 2016-08-17 | Pneumatic cut-off reversal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718455.6A CN106195327B (en) | 2016-08-17 | 2016-08-17 | Pneumatic cut-off reversal valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106195327A CN106195327A (en) | 2016-12-07 |
| CN106195327B true CN106195327B (en) | 2018-07-03 |
Family
ID=57524594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718455.6A Active CN106195327B (en) | 2016-08-17 | 2016-08-17 | Pneumatic cut-off reversal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106195327B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1323265A (en) * | 1971-03-30 | 1973-07-11 | Abramov V P | Device for filter cake pulsating blast discharge |
| DE10123157C1 (en) * | 2001-04-27 | 2002-11-14 | Demag Cranes & Components Gmbh | pneumatic valve |
| CN201764006U (en) * | 2010-08-21 | 2011-03-16 | 无锡气动技术研究所有限公司 | Normally open type pneumatic delay reversing valve |
| CN203500560U (en) * | 2013-10-23 | 2014-03-26 | 温州龙泽轻工机械有限公司 | Manual shut-off reversing valve |
-
2016
- 2016-08-17 CN CN201610718455.6A patent/CN106195327B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106195327A (en) | 2016-12-07 |
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