CN201764045U - Cavitation-proof static balance valve - Google Patents
Cavitation-proof static balance valve Download PDFInfo
- Publication number
- CN201764045U CN201764045U CN2010205391013U CN201020539101U CN201764045U CN 201764045 U CN201764045 U CN 201764045U CN 2010205391013 U CN2010205391013 U CN 2010205391013U CN 201020539101 U CN201020539101 U CN 201020539101U CN 201764045 U CN201764045 U CN 201764045U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- valve body
- rod
- valve rod
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a cavitation-proof static balance valve, which comprises a valve flap, a jaw opening locking apparatus and a valve body provided with a water inlet and a water outlet, wherein, the valve flap is mounted at the position of the valve body between the water inlet and the water outlet and is controlled by the jaw opening locking apparatus for vertically moving to be communicated or blocked with the water inlet and the water outlet; the utility model is characterized in that, an opening is arranged at the bottom of the valve flap to enable the lower part of the valve flap to form a cylinder communicated with the water outlet of the valve body all the time, the wall of the cylinder is provided with a plurality of spiral through slots, spiral through slots are arranged at the position communicated with the water inlet of the valve body during the valve flap moves upwardly from a lowest position. According to the spiral through slots arranged at the lower part of the static balance valve flap, the over flow area is enlarged, when the valve is opened, liquid enters into the cylinder along the outside of the cylinder spirally, accordingly, the molecular collision inside the fluid can be decreased, the fluid flowing is smooth and steady, the pressure fluctuation impact and the vibration cavitation can be overcome to enable the operation performance of the valve to be stable and the service life of the valve to be long.
Description
Affiliated technical field
The utility model relates to a kind of static balancing valve, specifically is a kind of static balancing valve that can overcome hydrodynamic pressure fluctuation impact and vibrations cavitation erosion well, and this static balancing valve has stable service behaviour, and long service life.
Background technique
Static balancing valve (also claiming equilibrium valve) is a kind of modulating valve that numeral shows and lock the aperture function that has, and it reaches the purpose of regulating flow by changing the aperture between spool and the valve seat; Equilibrium valve has good adjusting function and ends function, thereby all is widely used in a plurality of fields such as comprising heating and air-conditioner water system.Yet in use, the valve interior wall of equilibrium valve and fluid relative movement, cavitating easily, (so-called cavitation erosion is meant that the corrosion phenomenon of impact crater scar appears in valve interior wall owing to the long term that is subjected to local hydraulic impact if the air pocket production process occurs near the valve interior wall of equilibrium valve.) influence the normal use of static balancing valve.Therefore, how to prevent from effectively to cavitate be that static balancing valve improves service behaviour, one of the key factor that increases the service life.
The model utility content
The technical problems to be solved in the utility model provides a kind of static balancing valve that can overcome hydrodynamic pressure fluctuation impact and vibrations cavitation erosion well, and this static balancing valve has stable service behaviour, and long service life.
The technical problems to be solved in the utility model, can realize by following technological scheme: a kind of anti-cavitation erosion static balancing valve, comprise flap 2, aperture locking device and be provided with the valve body 1 of water intake 101, water outlet 102, wherein, described flap 2 is installed in the position of valve body 1 between water intake 101, water outlet 102, and this flap 2 is controlled upper and lower mobile connection or blocking-up valve body 1 water intake 101 and water outlet 102 by the aperture locking device; It is characterized in that: described flap 2 bottoms are provided with opening, this opening makes flap 2 bottoms form the cylindrical shell 201 that is communicated with the water outlet 102 of valve body 1 all the time, the barrel of described cylindrical shell 201 has some spirality grooves 202, and each spirality groove 202 is arranged in flap 2 is communicated with valve body 1 water intake 11 by the process of moving on the extreme lower position position.
During the utility model work, flap 2 is by moving to the position that needs in the control of aperture locking device, the a plurality of spirality grooves 202 that are opened in cylindrical shell 201 are communicated with the water intake 101 of valve body 1 in last process of moving, form the water intake 101 of valve body 1 and the connecting passage of water outlet 102, this moment, equilibrium valve was in open mode; Fluid (being generally water) is entered in the cylindrical shell 201 through above-mentioned a plurality of spirality grooves 202 whirlpool shapes by the water intake 101 of valve body 1, and flow to the water outlet 102 of valve body 1.When closing equilibrium valve, aperture locking device control flap 2 moves down, and a plurality of spiral grooves 202 of cylindrical shell 201 water intake 101 also corresponding and valve body 1 cuts off, and fluid remains static.
On the basis of the above, the spiral angle β of spirality groove 202 described in the utility model is 10～30 °.Static balancing valve commonly used designs the spiral angle of spirality groove by above-mentioned number range, has reached effectively to prevent the purpose that cavitates; For some static balancing valves that in particular cases uses, can design the spiral angle of spirality groove according to actual needs, to obtain best using effect.
On the basis of the above, spirality groove 202 circumference described in the utility model are evenly distributed in the barrel of described cylindrical shell 21; The quantity of spirality groove 202 also can design according to actual Environmental Conditions.
The inner chamber of valve body 1 described in the utility model is airflow design.
Aperture locking device described in the utility model comprises that valve rod 11, plug screw 17, the numeral of valve gap 9, adjusting screw rod 10, hollow show handwheel 19 and position-limited lever 22, and described valve gap 9 has axial hole; Described valve gap 9 is enclosed within the outside on flap 2 tops and fixing with valve body 1, is through in the axial hole of valve gap 9 described valve rod 11 axial restraints, and valve rod 11 upper ends and numeral show that handwheel 19 is fixing and by numeral demonstration handwheel driven rotary; The top of described valve rod 11 bottoms and flap 2 is provided with respective threads, and both assemble and constitute the screw thread transmission; Described adjusting screw rod 10 is contained in the bar chamber of valve rod 11 and valve rod 11 inwalls are provided with and adjusting screw rod 10 respective threads, and both form screw pair; Described numeral shows that handwheel 19 has axial hole, this axial hole is communicated with the axial hole of valve gap 9, and described plug screw 17 is installed in the axial hole of numeral demonstration handwheel 19, and plug screw 17 top edge are pushed down digital handwheel 19 inner edges that show; The top of the bottom of described adjusting screw rod 10 and position-limited lever 22 offsets, and fixedlys connected with flap 2 in described position-limited lever 22 lower ends; Described valve body 1 inwall is provided with the ring boss, and this ring boss is formed for limiting the valve seat 103 that flap moves down extreme lower position, and described flap 2 is displaced downwardly to extreme lower position and offsets with the ring boss.
Opening and closing by artificial forward or reverse numeral of the static balancing valve that the utility model provides shows that handwheel 19 drives correspondingly forward and backward of valve rod 11, valve rod 11 can make flap 2 move up and down with the power screw pair that flap 2 tops constitute, thereby make the spirality groove of flap bottom be communicated with or cut off, reach the purpose of keying with the water intake of valve body.
On the basis of the above, the utility model can be done following improvement: described valve rod 11 outer walls are provided with lug boss, and the axial hole of described valve gap 9 is a shoulder hole; Described valve rod 11 is through in the axial hole of valve gap 9, and the shoulder hole of the lug boss of valve rod 11 and valve gap 9 offsets; Described valve rod 11 outer walls also are provided with clip spring seat 16, and the top of described clip spring seat 16 and valve rod 11 outer wall contacting points are provided with check ring 18; Be with spring 15 between the clip spring seat 16 of described valve rod 11 and the lug boss.Spring 15 is pressed to valve gap 9 with the lug boss of valve rod 11 and is thought adaptive shoulder hole with it, realizes the axial restraint of valve rod 11.
On the basis of the above, the utility model can also be done following improvement:
Described flap 2 is positioned at the position that the valve seat 103 of extreme lower position and valve body 1 offsets and is provided with O shape circle 3; Be provided with antifriction ring 5 and O shape circle 6 between the outer wall of described valve gap 9 bottoms and the inside on flap 2 tops; Described valve gap 9 is provided with O shape circle 7 with valve body 1 contacting point.During valve closing, the sealing pair that the outer wall of the valve seat 103 on the valve body 1 and the bottom of flap 2, flap 2 and the inwall of valve gap 9 constitute remains static fluid, prevents the fluid leakage better.
The outer wall of the inwall of described valve rod 11 and adjusting screw rod 10 is provided with O shape circle 21; The internal interface synapsis of the axial hole of the outer wall of described valve rod 11 and valve gap 9 is provided with O shape circle 20, is provided with packing ring 14 and wear-resisting circle 13 between the lug boss of valve rod 11 and the spring 15, and the lug boss of valve rod 11 and valve gap 9 synapsis that connects is provided with wear-resisting circle 12.
The utility model comprises that also two test splices, 4, two test splices 4 are separately positioned on the outer wall of valve body 1 near water intake 101, water outlet 102.Two test splices connect other supplementary equipment, for example measuring instrument when being convenient to the test of this equilibrium valve.
Valve body 1 described in the utility model, valve gap 9 are cast by spheroidal graphite cast iron; Described flap 2 is cast by stainless steel.
Compared with prior art, the static balancing valve that the utility model provides has good adjusting function and by function, also has aperture simultaneously and show and the aperture locking framework.The spirality groove has been offered in the flap bottom of this static balancing valve, area of passage is big, and the valve pocket of valve body 1 is streamlined, and flow resistance is little, when valve open, liquid swirl shape outside cylindrical shell enters in the cylindrical shell, reduce the collision of fluid interior molecules, fluid flows steadily, can overcome pressure surge well and impact and shake cavitation erosion, make the service behaviour of valve more stable, the longer service life of valve.In heating and air-conditioner water system, use this valve, can reach the purpose of energy-saving and water-saving.This valve has good adjusting function and by function, also has aperture simultaneously and show and the aperture locking framework.
Description of drawings
Fig. 1 is a structure cross-sectional schematic of the present utility model, and this moment, equilibrium valve was in closed condition.
Embodiment
Anti-cavitation erosion static balancing valve as shown in Figure 1, be embodiment of the present utility model, it has comprised flap 2, valve gap 9, aperture locking device and has been provided with the valve body 1 of water intake 101, water outlet 102, flap 2 is installed in the position of valve body 1 between water intake 101, water outlet 102, and this flap 2 is controlled upper and lower mobile connection or blocking-up valve body 1 water intake 101 and water outlet 102 by the aperture locking device.The inner chamber of valve body 1 is airflow design, on the outer wall of valve body 1 near water intake 101, water outlet 102 test splice 4 is housed respectively; Valve body 1, valve gap 9 are cast by spheroidal graphite cast iron; Flap 2 is cast by stainless steel.
Inwall between valve body 1 water intake 101, the water outlet 102 is provided with the ring boss, and this ring boss is formed for limiting the valve seat 103 that flap moves down extreme lower position.
The aperture locking device comprises that valve rod 11, plug screw 17, the numeral of valve gap 9, adjusting screw rod 10, hollow show handwheel 19 and position-limited lever 22.
Wherein, valve gap 9 has step-like axial hole; Valve gap 9 is enclosed within the outside on flap 2 tops and fixes by socket head screw 8 and valve body 1.Valve rod 11 outer walls are provided with lug boss and clip spring seat 16, and the top of clip spring seat 16 and valve rod 11 outer wall contacting points are provided with check ring 18; Be with spring 15 between the clip spring seat 16 of valve rod 11 and the lug boss.Valve rod 11 is through in the axial hole of valve gap 9, and spring 15 is pressed to valve gap 9 with the lug boss of valve rod 11 and thought adaptive shoulder hole with it, realizes the axial restraint of valve rod 11.
Valve rod 11 upper ends are fixed with numeral demonstration handwheel 19 and are shown the handwheel driven rotary by numeral; The top of valve rod 11 bottoms and flap 2 is provided with respective threads, and both assemble and constitute the screw thread transmission; Adjusting screw rod 10 is through in the bar chamber of valve rod 11 and valve rod 11 inwalls are provided with and adjusting screw rod 10 respective threads, and both form screw pair; Numeral shows that handwheel 19 has axial hole, this axial hole is communicated with the axial hole of valve gap 9, plug screw 17 is installed in the axial hole of numeral demonstration handwheel 19, and plug screw 17 top edge are pushed down the inner edge that numeral shows handwheel 19, the top of the bottom of adjusting screw rod 10 and position-limited lever 22 offsets, and fixedlys connected with flap 2 in position-limited lever 22 lower ends.
The outer wall of the inwall of valve rod 11 and adjusting screw rod 10 is provided with O shape circle 21; The internal interface synapsis of the axial hole of the outer wall of valve rod 11 and valve gap 9 is provided with O shape circle 20, is provided with packing ring 14 and wear-resisting circle 13 between the lug boss of valve rod 11 and the spring 15, and the lug boss of valve rod 11 and valve gap 9 synapsis that connects is provided with wear-resisting circle 12.
When opening this static balancing valve, unload plug screw 17 earlier, with inner hexagon spanner rotation adjusting screw rod 10, make it to move, another mistake clock rotation numeral shows that handwheel 19 drives valve rod 11 and rotates; Required traffic figure according to showing on the handwheel is controlled at certain aperture with valve.
Because valve rod 11 is axially fixing by valve gap 9, valve rod 11 is in rotation process, feasible flap 2 with its composition power screw pair moves synchronously, this moment, flap 2 was owing to rising separates with the valve seat 103 of valve body 1, the a plurality of spirality grooves 202 that are opened in cylindrical shell 201 are communicated with the water intake 101 of valve body 1 in last process of moving, and form the water intake 101 of valve body 1 and the connecting passage of water outlet 102.Fluid (being generally water) is entered in the cylindrical shell 201 through above-mentioned a plurality of spirality grooves 202 whirlpool shapes by the water intake 101 of valve body 1, and flow to the water outlet 102 of valve body 1.
When the aperture of valve reaches when needing, with inner hexagon spanner rotation adjusting screw rod 10, make it to hold out against position-limited lever 22, prevent position-limited lever generation axial motion; Because of position-limited lever 22 and flap 2 are integral for being threaded, so flap 2 has also just obtained locking, promptly aperture obtains locking, vibrations in the time of so just preventing valve working and reduce noise; After setting finishes, screw on cock 17.
When closing this static balancing valve, the numeral that turns clockwise shows that handwheel 19 drives valve rod and rotates, flap 2 is moved down synchronously, when flap 2 is displaced downwardly to valve seat 103 with valve body 1 and offsets, the spirality groove 32 of flap 2 bottoms is cut off with the water intake 101 of valve body 1, valve closing, fluid remains static.
Claims (10)
1. prevent the cavitation erosion static balancing valve for one kind, comprise flap (2), aperture locking device and be provided with the valve body (1) of water intake (101), water outlet (102), wherein, described flap (2) is installed in valve body (1) and is positioned at position between water intake (101), the water outlet (102), and this flap (2) is controlled upper and lower mobile connection or blocking-up valve body (1) water intake (101) and water outlet (102) by the aperture locking device; It is characterized in that: described flap (2) bottom is provided with opening, this opening makes flap (2) bottom form the cylindrical shell (201) that is communicated with the water outlet (12) of valve body (1) all the time, the barrel of described cylindrical shell (201) has some spirality grooves (202), and each spirality groove (202) is arranged in flap (2) is communicated with valve body (1) water intake (101) by the process of moving on the extreme lower position position.
2. equilibrium valve according to claim 1 is characterized in that: the spiral angle β of described spirality groove (202) is 10～30 °.
3. equilibrium valve according to claim 1 and 2 is characterized in that: described spirality groove (202) circumference is evenly distributed in the barrel of described cylindrical shell (201).
4. equilibrium valve according to claim 3 is characterized in that: the inner chamber of described valve body (1) is airflow design.
5. equilibrium valve according to claim 4, it is characterized in that: described aperture locking device comprises that valve rod (11), plug screw (17), the numeral of valve gap (9), adjusting screw rod (10), hollow show handwheel (19) and position-limited lever (22), and described valve gap (9) has axial hole; Described valve gap (9) is enclosed within the outside on flap (2) top and fixes with valve body (1), be through in the axial hole of valve gap (9), valve rod (11) upper end is fixed with numeral demonstration handwheel (19) and is shown handwheel (19) driven rotary by numeral described valve rod (11) axial restraint; The top of described valve rod (11) bottom and flap (2) is provided with respective threads, and both assemble and constitute the screw thread transmission; Described adjusting screw rod (10) is through in the bar chamber of valve rod (11) and valve rod (11) inwall is provided with and adjusting screw rod (10) respective threads, and both form screw pair; Described numeral shows that handwheel (19) has axial hole, this axial hole is communicated with the axial hole of valve gap (9), described plug screw (17) is installed in the axial hole of numeral demonstration handwheel (19), and plug screw (17) top edge is pushed down the inner edge that numeral shows handwheel (19), the top of the bottom of described adjusting screw rod (10) and position-limited lever (22) offsets, and fixedlys connected with flap (2) in described position-limited lever (22) lower end; Described valve body (1) inwall is provided with the ring boss, and this ring boss is formed for limiting the valve seat (103) that flap moves down extreme lower position, and described flap (2) is displaced downwardly to extreme lower position and offsets with the ring boss.
6. equilibrium valve according to claim 5 is characterized in that: described valve rod (11) outer wall is provided with lug boss, and the axial hole of described valve gap (9) is a shoulder hole; Described valve rod (11) is through in the axial hole of valve gap (9), and the shoulder hole of the lug boss of valve rod (11) and valve gap (9) offsets; Described valve rod (11) outer wall also is provided with clip spring seat (16), and the top of described clip spring seat (16) and valve rod (11) outer wall contacting point are provided with check ring (18); Be with spring (15) between the clip spring seat (16) of described valve rod (11) and the lug boss.
7. equilibrium valve according to claim 6 is characterized in that: described flap (2) is positioned at the position that the valve seat (103) of extreme lower position and valve body (1) offsets and is provided with O shape circle (3); Be provided with antifriction ring (5) and O shape circle (6) between the inside on the outer wall of described valve gap (9) bottom and flap (2) top; Described valve gap (9) is provided with O shape circle (7) with valve body (1) contacting point.
8. equilibrium valve according to claim 7 is characterized in that: the outer wall of the inwall of described valve rod (11) and adjusting screw rod (10) is provided with O shape circle (21); The internal interface synapsis of the axial hole of the outer wall of described valve rod (11) and valve gap (9) is provided with O shape circle (20), be provided with packing ring (14) and wear-resisting circle (13) between the lug boss of valve rod (11) and the spring (15), the lug boss of valve rod (11) and valve gap (9) synapsis that connects is provided with wear-resisting circle (12).
9. equilibrium valve according to claim 8 is characterized in that: also comprise two test splices (4), two test splices (4) are separately positioned on the outer wall of valve body (1) near water intake (101), water outlet (102).
10. equilibrium valve according to claim 9 is characterized in that: described valve body (1), valve gap (2) are cast by spheroidal graphite cast iron; Described flap (2) is cast by stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205391013U CN201764045U (en) | 2010-09-21 | 2010-09-21 | Cavitation-proof static balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205391013U CN201764045U (en) | 2010-09-21 | 2010-09-21 | Cavitation-proof static balance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764045U true CN201764045U (en) | 2011-03-16 |
Family
ID=43716650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205391013U Expired - Fee Related CN201764045U (en) | 2010-09-21 | 2010-09-21 | Cavitation-proof static balance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764045U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061337A (en) * | 2014-06-30 | 2014-09-24 | 广东永泉阀门科技有限公司 | Improved piston-type control valve |
| CN104089026A (en) * | 2014-06-30 | 2014-10-08 | 广东永泉阀门科技有限公司 | Integral piston with cavitation cover and water valve with same |
| CN104251336A (en) * | 2013-06-27 | 2014-12-31 | 王志敏 | Novel energy-saving valve |
-
2010
- 2010-09-21 CN CN2010205391013U patent/CN201764045U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251336A (en) * | 2013-06-27 | 2014-12-31 | 王志敏 | Novel energy-saving valve |
| CN104061337A (en) * | 2014-06-30 | 2014-09-24 | 广东永泉阀门科技有限公司 | Improved piston-type control valve |
| CN104089026A (en) * | 2014-06-30 | 2014-10-08 | 广东永泉阀门科技有限公司 | Integral piston with cavitation cover and water valve with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101504088B (en) | Multifunctional general balance valve | |
| CN201764045U (en) | Cavitation-proof static balance valve | |
| CN205859274U (en) | Adjustable dynamic balance valve | |
| CN111795190A (en) | Piston-driven straight-through pressure-regulating flow-regulating valve | |
| CN102086946B (en) | Multifunctional dynamic flow balancing valve | |
| CN204004722U (en) | Balance cage type single seat regulating valve | |
| CN201909078U (en) | Multifunctional dynamic flow rate balance valve | |
| CN202182222U (en) | Piston type balanced self-reliance pressure-regulating valve | |
| CN103322243B (en) | A kind of Multifunctional combined valve that can dismantle online | |
| CN209638487U (en) | A kind of novel flow control valve | |
| CN2846936Y (en) | Flow self control valve | |
| CN201680021U (en) | Unloading self-operated flow control valve | |
| CN102829222A (en) | Pressure-difference-variable flow control valve | |
| CN203115114U (en) | Double-guidance single-seated valve device | |
| CN205118420U (en) | A piston valve | |
| CN105757297A (en) | Multifunctional self-operated check valve | |
| CN206637082U (en) | The single-seat adjusting valve of high reliability | |
| CN201233538Y (en) | Stepped liquid saving flow regulating apparatus | |
| CN219975359U (en) | Opening limiting device and opening limiting diaphragm valve | |
| CN212616576U (en) | Squirrel-cage flow regulating valve with regulating window | |
| CN202972071U (en) | Double differential pressure regulation valve | |
| CN220816581U (en) | Valve sleeve type pollution discharge throttle valve | |
| CN202708137U (en) | Regulating valve special for high viscosity heavy oil | |
| CN210423745U (en) | Integrated injection molding butterfly valve | |
| RU2439408C2 (en) | Throttle valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG YONGQUAN VALVE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: FOSHAN NANHAI YONGXIN VALVE MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528203 Guangdong Province Nanhai District of Foshan City, Jiujiang Longgao Road No. 1 East Mei Patentee after: Guangdong Yongquan Valve Technology Co., Ltd. Address before: 528203 Guangdong Province Nanhai District of Foshan City, Jiujiang Longgao Road No. 1 East Mei Patentee before: Foshan Nanhai Yongxin Valve Manufacturing Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Cavitation-proof static balance valve Effective date of registration: 20151113 Granted publication date: 20110316 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd Pledgor: Guangdong Yongquan Valve Technology Co., Ltd. Registration number: 2015990001000 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20171103 Granted publication date: 20110316 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd Pledgor: Guangdong Yongquan Valve Technology Co., Ltd. Registration number: 2015990001000 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20190921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |