CN205714789U - A kind of high accuracy noise reduction check valve - Google Patents
A kind of high accuracy noise reduction check valve Download PDFInfo
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- CN205714789U CN205714789U CN201620622185.4U CN201620622185U CN205714789U CN 205714789 U CN205714789 U CN 205714789U CN 201620622185 U CN201620622185 U CN 201620622185U CN 205714789 U CN205714789 U CN 205714789U
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- noise reduction
- flow duct
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Abstract
nullThe utility model discloses a kind of high accuracy noise reduction check valve，Including valve seat shell、Piston and hush pipe，Valve seat shell be internally provided with air-flow duct，Air-flow duct includes the first air-flow duct and the second air-flow duct，Piston is positioned at the second air-flow duct，Piston be provided above elastic pressure bar，Hush pipe is positioned at the top of valve seat shell，Hush pipe includes housing、Noise reduction coil pipe and acoustical panel，Noise reduction coil pipe and acoustical panel are respectively positioned on the inside of housing，Acoustical panel is positioned at above the gas outlet of noise reduction coil pipe，This utility model simple in construction，By piston and the design of elastic pressure bar，The use enhanced convenience making check valve is simple，Improve the usage safety performance of screw compressor，Check valve is possible not only to the flowing according to air-flow and carries out the opening and closing of valve，And the resilience force that piston can rely on elastic pressure bar resets，Effectively prevent back flow of gas，Simultaneously by the design of hush pipe，The noise in air-flow conveying can be reduced，Improve comprehensive utilization ratio.
Description
Technical field
This utility model relates to a kind of high accuracy noise reduction check valve.
Background technology
In recent years, screw compressor owing to its efficiency is high, noise is low, running balance and be subject to the people's attention.Vortex
Compressor is the compressor of a kind of positive displacement compression, and compression section is made up of orbiter and fixed scroll.Screw compressor
Unique design so that it is become the energy-saving compressor of the world today.Screw compressor operates steadily, it is little to vibrate, working environment is quiet,
It is described as again " super static compression machine ", is widely used in the row such as industry, agricultural, transportation, medical apparatus and instruments, food decoration and weaving
Industry and other compressed-air actuated occasion of needs.Scroll compressor is to have the dynamic and static whirlpool dish of two digamma function equation molded line mutual
Occlusion forms.Air-breathing, compression, aerofluxus work process in, quiet dish is fixed in frame, and Moving plate is driven by eccentric shaft and by preventing
Free-wheeling system restricts, and around quiet dish basic circle center, makees the Plane Rotation of very minor radius.Gas sucks quiet dish by air filtering core
Periphery, along with the rotation of eccentric shaft, gas is progressively compressed in several crescent compression chambers that conjunction is formed bitten by sound dish,
Then discharged continuously by the axial hole of quiet disk center parts.
Check valve is one of vitals in screw compressor, and the compression effectiveness for screw compressor has great shadow
Ring.Check valve primarily serves the effect of isolation, by compressed sky before preventing the piston of compressor from sucking in breathing process
Gas.Screw compressor can be played a protective role by arranging of check valve, effectively prevents high pressure reflow from causing the damage of machine.
During the use of screw compressor, have found that gas causes check valve in use to there is the biggest noise
Problem.And existing check valve in use there will be gas backstreaming phenomenon, screw compressor is caused certain damage
Evil.
Utility model content
This utility model purpose is to provide a kind of high accuracy noise reduction check valve for the deficiency existing for prior art
Technical scheme, by piston and the design of elastic pressure bar so that the use enhanced convenience of check valve is simple, improves vortex
The usage safety performance of compressor, check valve is possible not only to the flowing according to air-flow and carries out the opening and closing of valve, and piston
The resilience force that can rely on elastic pressure bar resets, and effectively prevents back flow of gas, simultaneously by the design of hush pipe, can drop
Noise in low-flow conveying, improves comprehensive utilization ratio.
In order to solve above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of high accuracy noise reduction check valve, including valve seat shell, piston and hush pipe, it is characterised in that: valve seat shell
Being internally provided with air-flow duct, air-flow duct includes the first air-flow duct and the second air-flow duct, and piston is positioned at the second airflow hole
In road, the left and right sides of piston is provided with guide post, piston be provided above elastic pressure bar, the lower end of elastic pressure bar and work
Plug is connected, and the upper end of elastic pressure bar connects by the inwall in fixing snap ring and the second air-flow duct is fixing, and hush pipe is positioned at valve
The top of seat shell, hush pipe includes housing, noise reduction coil pipe and acoustical panel, and noise reduction coil pipe and acoustical panel are respectively positioned on the interior of housing
Portion, acoustical panel is positioned at above the escape pipe of noise reduction coil pipe, and the air inlet pipe of noise reduction coil pipe is fixedly connected with the casing by baffle plate；Air-flow
The design in duct can be so that the flowing of air-flow, and the design in the first air-flow duct and the second air-flow duct is possible not only to be easy to piston
Installation with elastic pressure bar and placement, and by limiting the first air-flow duct and the diameter in the second air-flow duct, so that
The buffer action of check valve is more preferable, can be realized unlatching and the Guan Bi of check valve by the design of piston, when air motion drives
Piston moves up, and piston and the first air-flow duct separate so that gas can flow to the second airflow hole from the first air-flow duct
Road, but if having compressed gas to reflux, compressed gas drives piston to move down, until the lower surface of piston and the first gas
Discharge orifice road contacts so that the first air-flow duct is stopped by piston, it is to avoid the backflow of gas, and overall structure is simple, easy to use,
The movement that can be designed so that piston of guide post is the most stable, effectively prevents piston from offseting in moving process, from
And ensure piston when moving down, the bottom surface of piston can be just to the first air-flow duct, by resistance tight for the first air-flow duct
Gear, effectively prevents the backflow of air-flow, and the design of elastic pressure bar is possible not only to play cushioning effect, reduces the air-flow impact to piston
Effect, plays a protective role to piston, extends the service life of piston, and the isolation that can improve again check valve further is made
With, while air-flow drives piston to move up, elastic pressure bar compresses, and after air-flow has carried, piston can rely on elastic pressure
The resilience force of bar moves down, until elastic pressure bar returns to original state, fixing snap ring can be designed so that elastic pressure bar
Fixing enhanced convenience is firm, and the design of hush pipe can absorb noise in air current flow, reduces the pulsation of air current flow so that
The use enhanced convenience of check valve, noise reduction coil pipe is designed by its spiral helicine shape, is possible not only to reduce pulse pneumatic
Amplitude, and the path of gas flowing can be changed, make the pressure fluctuation of air-flow obtain a certain degree of mitigation, thus reduce gas
The microseismic noise of stream, the design of acoustical panel can reduce the noise in air-flow conveying further, improve the erasure effect of check valve.
Further, housing includes shell and inner shell, is provided with silencing cotton in the cavity between shell and inner shell, and silencing cotton is
Polyester silencing cotton, noise absorbent gas flowing produced by silencing cotton, improves noise reduction, polyester silencing cotton material further
The silencing cotton good muffling effect of material, cuts out conveniently, moderate, simple in construction.
Further, the top and bottom of valve seat shell are provided with fixing hole, and the design of fixing hole can be so that check valve
With fixing and being connected between screw compressor casing so that the installation of check valve is the most convenient, and two ends are all provided with the most up and down
It is equipped with fixing hole, so that check valve is fixing more stable firm, reduces the mechanicalness noise during non-return valve operational.
Further, the diameter in the first air-flow duct is less than the diameter in the second air-flow duct, and the diameter in the first air-flow duct is little
In the diameter of piston, piston diameter is less than the diameter in the second air-flow duct, and the first air-flow duct, the second air-flow duct and piston are straight
The design in footpath so that total is the compactest, when closed check valve, it is ensured that the first air-flow duct is stopped by piston, from
And make the buffer action of check valve more preferably, effectively prevent the backflow of gas, screw compressor is played a protective role, improve
Security performance.
Further, the medial wall, left and right two in the second air-flow duct being provided with draw-in groove, guide post matches with draw-in groove, lives
Filling in spacing in draw-in groove by guide post, move up and down along draw-in groove, the design of draw-in groove can be so that guide post spacing and installing.
Further, fixing snap ring includes that first fixes snap ring and second and fix snap ring, first fix arrange on snap ring limited
Position groove, second fixes and is provided with limited block on snap ring, and limited block matches with stopper slot, and first fixes snap ring and second fixing blocks
The design of ring can be so that the fixing and dismounting of elastic pressure bar, with stopper slot, limited block can be designed so that first fixes snap ring
And second fixes the more close and firm of the connection between snap ring, improve the stability of whole device, reduce non-return valve operational
Mechanical noise.
Further, first fixes snap ring and second fixes and is provided with connecting plate on snap ring, and first fixes snap ring, second solid
Determining snap ring to be all connected by the inwall of connecting plate and the second air-flow duct, the design of connecting plate can be so that first fixes card
Ring, second fix the installation of snap ring and fixing.
Further, the escape pipe of noise reduction coil pipe being provided with air guide port, air guide port is inverted cone, and the design of air guide port is permissible
Guiding air-flow to discharge from hush pipe, accelerate deflation rate, improve the work efficiency of check valve, the design of inverted cone is permissible simultaneously
Increase airflow exits volume, structure design more rationally science further, use also enhanced convenience.
Further, baffle plate being provided with screwed hole with air inlet pipe relative to place, the lower end of air inlet pipe is provided with screw thread, air inlet
Pipe matches with screwed hole, and the connection that can be designed so that between air inlet pipe and baffle plate of screw thread and screwed hole the most firmly may be used
Lean on, the impact preventing air-flow from noise reduction coil pipe being caused, improve the stability of whole noise reduction coil pipe, the later stage can also be easy to simultaneously
Maintenance and replacing.
This utility model, owing to have employed technique scheme, has the advantages that
1, the design in air-flow duct can be so that the flowing of air-flow, and the design in the first air-flow duct and the second air-flow duct is not
Only can be so that piston and the installation of elastic pressure bar and placement, and by limiting the first air-flow duct and the second air-flow duct
Diameter, so that the buffer action of check valve is more preferable；
2, unlatching and the Guan Bi of check valve can be realized by the design of piston, when air motion drives piston upwards to move
Dynamic, piston and the first air-flow duct separate so that gas can flow to the second air-flow duct from the first air-flow duct, but if
When having compressed gas to reflux, compressed gas drives piston to move down, until the lower surface of piston connects with the first air-flow duct
Touching so that the first air-flow duct is stopped by piston, it is to avoid the backflow of gas, overall structure is simple, easy to use；
3, the movement that can be designed so that piston of guide post is the most stable, effectively prevents piston from sending out in moving process
Raw skew, thus ensure piston when moving down, the bottom surface of piston can be just to the first air-flow duct, by the first air-flow duct
Tight stop, effectively prevents the backflow of air-flow；
4, the design of elastic pressure bar is possible not only to play cushioning effect, reduces the air-flow impact effect to piston, to piston
Playing a protective role, extend the service life of piston, and can improve again the buffer action of check valve further, air-flow drives
While piston moves up, elastic pressure bar compresses, and after air-flow has carried, piston can rely on the resilience force of elastic pressure bar
Moving down, until elastic pressure bar returns to original state, that fixes snap ring can be designed so that fixing more of elastic pressure bar
Convenient firm；
5, the design of hush pipe can absorb noise in air current flow, reduces the pulsation of air current flow so that check valve
Using enhanced convenience, noise reduction coil pipe is designed by its spiral helicine shape, is possible not only to reduce the amplitude of pulse pneumatic, and
Also can change the path of gas flowing, make the pressure fluctuation of air-flow obtain a certain degree of mitigation, thus reduce the pulsation of air-flow
Noise, the design of acoustical panel can reduce the noise in air-flow conveying further, improve the erasure effect of check valve.
This utility model simple in construction, practical, by piston and the design of elastic pressure bar so that the use of check valve
Enhanced convenience is simple, improves the usage safety performance of screw compressor, and the flowing that check valve is possible not only to according to air-flow is entered
The opening and closing of row valve, and the resilience force that piston can rely on elastic pressure bar resets, and effectively prevents back flow of gas, with
Time by the design of hush pipe, the noise in air-flow conveying can be reduced, improve comprehensive utilization ratio.
Accompanying drawing explanation
The utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of this utility model a kind of high accuracy noise reduction check valve；
Fig. 2 is the structural representation fixing snap ring in this utility model.
In figure: 1-valve seat shell；2-piston；3-hush pipe；4-the first air-flow duct；5-the second air-flow duct；6-guides
Bar；7-elastic pressure bar；8-fixes snap ring；9-air guide port；10-noise reduction coil pipe；11-acoustical panel；12-escape pipe；13-air inlet pipe；
14-shell；15-inner shell；16-silencing cotton；17-fixing hole；18-draw-in groove；The fixing card of 19-first；20-second fixes snap ring；21-
Stopper slot；22-limited block；23-connecting plate；24-baffle plate.
Detailed description of the invention
As shown in Figure 1 to Figure 2, for this utility model one high accuracy noise reduction check valve, including valve seat shell 1, piston 2 and
Hush pipe 3, the top and bottom of valve seat shell 1 are provided with fixing hole 17, the design of fixing hole 17 can so that check valve with
Fixing and connection between screw compressor casing so that the installation of check valve is the most convenient, and two ends are respectively provided with the most up and down
There is fixing hole 17, so that the fixing more stable of check valve firmly reduces the mechanicalness noise during non-return valve operational,
Valve seat shell 1 be internally provided with air-flow duct, air-flow duct includes the first air-flow duct 4 and the second air-flow duct 5, the first gas
The diameter in discharge orifice road 4 is less than the diameter in the second air-flow duct 5, and the diameter in the first air-flow duct 4 is less than the diameter of piston 2, piston 2
Diameter is less than the diameter in the second air-flow duct 5, the 4, second air-flow duct 5, the first air-flow duct and the design of piston 2 diameter so that
Total is the compactest, when closed check valve, it is ensured that the first air-flow duct 4 is stopped by piston 2, so that check valve
Buffer action more preferable, effectively prevent the backflow of gas, screw compressor played a protective role, improve security performance, the
Being provided with draw-in groove 18 on the medial wall, left and right two in two air-flow ducts 5, guide post 6 matches with draw-in groove 18, and piston 2 is by guiding
Bar 6 is spacing in draw-in groove 18, moves up and down along draw-in groove 18, and the design of draw-in groove 18 can be so that guide post 6 spacing and installing, gas
The design in discharge orifice road can be so that the flowing of air-flow, and the design in the first air-flow duct 4 and the second air-flow duct 5 is possible not only to be easy to
Piston 2 and the installation of elastic pressure bar 7 and placement, and by limiting the first air-flow duct 4 and diameter in the second air-flow duct 5,
So that the buffer action of check valve is more preferable.
Piston 2 is positioned at the second air-flow duct 5, can be realized unlatching and the Guan Bi of check valve by the design of piston 2, when
Air motion drives piston 2 to move up, and piston 2 separates with the first air-flow duct 4 so that gas can be from the first air-flow duct
4 flow to the second air-flow duct 5, but if having compressed gas to reflux, compressed gas drives piston 2 to move down, until living
The lower surface of plug 2 contacts with the first air-flow duct 4 so that the first air-flow duct 4 is stopped by piston 2, it is to avoid the backflow of gas,
Overall structure is simple, and easy to use, the left and right sides of piston 2 is provided with guide post 6, guide post 6 can be designed so that work
The movement of plug 2 is the most stable, effectively prevents piston 2 from offseting in moving process, thus ensures that piston 2 is moving down
Time, the bottom surface of piston 2 by stop tight for the first air-flow duct 4, can effectively prevent air-flow just to the first air-flow duct 4
Backflow, piston 2 be provided above elastic pressure bar 7, the lower end of elastic pressure bar 7 is connected with piston 2, the upper end of elastic pressure bar 7
Being connected by fixing snap ring 8 is fixing with the inwall in the second air-flow duct 5, the design of elastic pressure bar 7 is possible not only to play buffering and makees
With, reduce the air-flow impact effect to piston 2, piston 2 is played a protective role, extend the service life of piston 2, and again may be used
To improve the buffer action of check valve further, while air-flow drives piston 2 to move up, elastic pressure bar 7 compresses, and works as air-flow
After having carried, piston 2 can rely on the resilience force of elastic pressure bar 7 to move down, until elastic pressure bar 7 returns to original state.
Fixing snap ring 8 includes that snap ring 20 fixed by the first fixing card 19 and second, and the first fixing card 19 is provided with stopper slot
21, second fixes and is provided with limited block 22 on snap ring 20, and limited block 22 matches with stopper slot 21, the first fixing card 19 and second
The design of fixing snap ring 20 can be so that the fixing and dismounting of elastic pressure bar 7, and limited block 22 can make with the design of stopper slot 21
Obtain the first fixing card 19 and second and fix the more close and firm of the connection between snap ring 20, improve the stability of whole device
Can, reducing the mechanical noise of non-return valve operational, the first fixing card 19 and second is fixed and is provided with connecting plate 23 on snap ring 20, the
One fix card 19, second fix snap ring 20 and be all connected by the inwall of connecting plate 23 with the second air-flow duct 5, connecting plate 23
Design can so that first fixing card 19, second fixing the installation of snap ring 20 and fixing, fixing snap ring 8 can be designed so that bullet
The fixing enhanced convenience of property depression bar 7 is firm.
Hush pipe 3 is positioned at the top of valve seat shell 1, and hush pipe 3 includes housing, noise reduction coil pipe 10 and acoustical panel 11, housing
Including shell 14 and inner shell 15, being provided with silencing cotton 16 in the cavity between shell 14 and inner shell 15, the material of silencing cotton 16 is
Polyester silencing cotton 16, noise absorbent gas flowing produced by silencing cotton 16, improves noise reduction, polyester noise reduction further
Silencing cotton 16 good muffling effect of cotton 16 materials, cuts out conveniently, moderate, simple in construction, noise reduction coil pipe 10 and acoustical panel 11
Being respectively positioned on the inside of housing, acoustical panel 11 is positioned at above the escape pipe 12 of noise reduction coil pipe 10, on the escape pipe 12 of noise reduction coil pipe 10
Being provided with air guide port 9, air guide port 9 is in inverted cone, and the design of air guide port 9 can guide air-flow to discharge from hush pipe 3, accelerates row
Gas speed, improves the work efficiency of check valve, and the design of inverted cone simultaneously can increase airflow exits volume further, and structure sets
Meter more rationally science, uses also enhanced convenience, and the air inlet pipe 13 of noise reduction coil pipe 10 is fixing even by baffle plate 24 and housing
Connecing, baffle plate 24 is provided with screwed hole with air inlet pipe 13 relative to place, the lower end of air inlet pipe 13 is provided with screw thread, air inlet pipe 13 with
Screwed hole matches, and the connection that can be designed so that between air inlet pipe 13 and baffle plate 24 of screw thread and screwed hole the most firmly may be used
Lean on, the impact preventing air-flow from noise reduction coil pipe 10 being caused, improve the stability of whole noise reduction coil pipe 10, can also be easy to simultaneously
The maintenance in later stage and replacing, the design of hush pipe 3 can absorb noise in air current flow, reduces the pulsation of air current flow so that
The use enhanced convenience of check valve, noise reduction coil pipe 10 is designed by its spiral helicine shape, is possible not only to reduce pulse pneumatic
Amplitude, and can change gas flowing path, make the pressure fluctuation of air-flow obtain a certain degree of mitigation, thus reduce
The microseismic noise of air-flow, the design of acoustical panel 11 can reduce the noise in air-flow conveying further, improve the noise reduction of check valve
Effect.
These are only specific embodiment of the utility model, but technical characteristic of the present utility model is not limited thereto.Appoint
How based on this utility model, for realizing essentially identical technique effect, done ground simple change, equivalent or repair
Decorations etc., are all covered by among protection domain of the present utility model.
Claims (9)
1. a high accuracy noise reduction check valve, including valve seat shell, piston and hush pipe, it is characterised in that: described valve seat shell
Be internally provided with air-flow duct, described air-flow duct includes the first air-flow duct and the second air-flow duct, and described piston is positioned at
In described second air-flow duct, the left and right sides of described piston is provided with guide post, and being provided above of described piston is flexible
Depression bar, the lower end of described elastic pressure bar is connected with described piston, the upper end of described elastic pressure bar by fixing snap ring with described
The inwall in the second air-flow duct is fixing to be connected, and described hush pipe is positioned at the top of described valve seat shell, and described hush pipe includes shell
Body, noise reduction coil pipe and acoustical panel, described noise reduction coil pipe and described acoustical panel are respectively positioned on the inside of described housing, described acoustical panel position
Above the escape pipe of described noise reduction coil pipe, the air inlet pipe of described noise reduction coil pipe is connected by baffle plate and described housing are fixing.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: described housing includes shell and interior
Shell, is provided with silencing cotton in the cavity between described shell and described inner shell, described silencing cotton is polyester silencing cotton.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: the upper end of described valve seat shell and
Lower end is provided with fixing hole.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: described first air-flow duct straight
Footpath is less than the diameter in described second air-flow duct, and the diameter in described first air-flow duct is less than the diameter of described piston, described work
Plug diameter is less than the diameter in described second air-flow duct.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: the left side in described second air-flow duct
Being provided with draw-in groove on right two medial walls, described guide post matches with described draw-in groove, and described piston is limited by described guide post
Position, in described draw-in groove, moves up and down along described draw-in groove.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: described fixing snap ring includes first
Fixing snap ring and second fixes snap ring, and described first fixes and be provided with stopper slot on snap ring, and described second fixes and arrange on snap ring
Limited location block, described limited block matches with described stopper slot.
A kind of high accuracy noise reduction check valve the most according to claim 6, it is characterised in that: described first fixes snap ring and institute
State second to fix and on snap ring, be provided with connecting plate, described first fix snap ring, described second fix snap ring all by described company
Fishplate bar is connected with the inwall in described second air-flow duct.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: the escape pipe of described noise reduction coil pipe
On be provided with air guide port, described air guide port is inverted cone.
A kind of high accuracy noise reduction check valve the most according to claim 1, it is characterised in that: with described air inlet on described baffle plate
Pipe is provided with screwed hole relative to place, and the lower end of described air inlet pipe is provided with screw thread, described air inlet pipe and described screwed hole phase
Join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620622185.4U CN205714789U (en) | 2016-06-21 | 2016-06-21 | A kind of high accuracy noise reduction check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620622185.4U CN205714789U (en) | 2016-06-21 | 2016-06-21 | A kind of high accuracy noise reduction check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714789U true CN205714789U (en) | 2016-11-23 |
Family
ID=57315464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620622185.4U Active CN205714789U (en) | 2016-06-21 | 2016-06-21 | A kind of high accuracy noise reduction check valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN205714789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674132A (en) * | 2018-05-24 | 2018-10-19 | 文丹 | A kind of new-energy automotive air-conditioning refrigeration pipeline muffler |
| CN113339234A (en) * | 2021-07-09 | 2021-09-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Amortization subassembly, compressor and refrigeration plant |
-
2016
- 2016-06-21 CN CN201620622185.4U patent/CN205714789U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674132A (en) * | 2018-05-24 | 2018-10-19 | 文丹 | A kind of new-energy automotive air-conditioning refrigeration pipeline muffler |
| CN113339234A (en) * | 2021-07-09 | 2021-09-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Amortization subassembly, compressor and refrigeration plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 312500 Xinchang City, Shaoxing Province Ling Ling Road, No. 1, building 1, No. Patentee after: Zhejiang Fuji Seiko technology Co., Ltd. Address before: 312599, No. 1, 1 Ling Chi Road, Qixing street, Xinchang County, Zhejiang, Shaoxing Patentee before: Xinchang Ciunty Fuji Fine Technology Co., Ltd. |
|
| CP03 | Change of name, title or address |