CN201978582U - Pulse-type back-flushing device of filter - Google Patents
Pulse-type back-flushing device of filter Download PDFInfo
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- CN201978582U CN201978582U CN2011200836918U CN201120083691U CN201978582U CN 201978582 U CN201978582 U CN 201978582U CN 2011200836918 U CN2011200836918 U CN 2011200836918U CN 201120083691 U CN201120083691 U CN 201120083691U CN 201978582 U CN201978582 U CN 201978582U
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- water
- lock body
- chamber
- barrier film
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Abstract
The utility model relates to the technology and the device of an agricultural water-saving irrigating filter, in particular to a pulse-type back-flushing device of a filter. By driving a pulse valve through water power to change a continuous water flow into a pulse water flow, of which the pressure ascends quickly and descends slowly, and then to perform back flushing on a filter screen, the quickly ascending pressure can form a strong impact on obstructions on the filter screen of the filter, so that the adhered obstructions can fall off more easily; the slowly descending pressure does not cause a water hammer, so that the filter is protected from damage; the regulating range of pulse frequency is large and the pulse frequency is regulated to enable the pulse-type back-flushing device to adapt to different filters so as to achieve the best back-flushing effect; and the pulse-type back-flushing device has the characteristics of simple installation, easy restructuring process, low cost, high back-flushing efficiency and good back-flushing effect.
Description
Technical field:
The utility model relates to agricultural water-saving irrigation filter technology and device, relates in particular to a kind of filter pulsed back purge system.
Background technology:
The filter that agricultural water-saving irrigation uses, the filter screen of work a period of time after-filter can be stopped up by the impurity in the water, and the reverse water filling of needs is carried out backwash to the filter screen of filter.The mode of the reverse water filling of traditional employing solid stream of water flushing, time-consuming, water wasting, power consumption, efficient is low.
The utility model content:
The purpose of this utility model is to provide a kind of water-saving, energy-conservation, filter pulsed back purge system efficiently.
The purpose of this utility model is achieved in that
A kind of filter pulsed back purge system, after pulse valve being installed in the Water filling valve of filter backwash water injection pipe, again filter screen is carried out backwash after by pulse valve solid stream of water being become the pulse current, pulse valve comprises: valve body, water inlet, intake antrum, lock body guide bar support, lock body guide rod, the lock body, the lock groove, water chamber, lock body push-and-pull spring, delivery port, barrier film, control chamber, the barrier film extension spring, the control chamber intake-outlet, the control chamber water inlet pipe and water outlet pipe, screw rod, thumb wheel, intake antrum, water chamber, laterally main cross section is circle in the control chamber chamber, the lock body, the lock groove is truncated cone-shaped and contact-making surface coincide mutually, the lock body is made by elastomeric material, lock body push-and-pull spring is a volute spring, barrier film is by the ripply soft silastic material circular film of outer rim, cover on the two sides of circular film middle part and fixing circular corrosion resistant plate and making, the area of circular corrosion resistant plate is greater than the major part area of lock body, the control chamber water inlet pipe and water outlet pipe is a circular cross section, one end of control chamber water inlet pipe and water outlet pipe communicates with intake antrum, the other end communicates with control chamber by the control chamber intake-outlet, the control chamber intake-outlet is the narrow slit of width less than control chamber water inlet pipe and water outlet pipe diameter, narrow slit is positioned at the below of close control chamber one end of control chamber water inlet pipe and water outlet pipe and communicates with it, one section of close control chamber one end of narrow slit length direction and control chamber water inlet pipe and water outlet pipe is parallel, screw thread is arranged on the screw rod, Jie Chu valve body also has respective threads with it, screw thread adopts elastomeric material (for example poly fourfluoroplastics) to make, make it have stagnant water effect, one end of screw rod is positioned at outside the valve body and is fixed with thumb wheel, the other end of screw rod enters into the inside of control chamber water inlet pipe and water outlet pipe near control chamber one end, and block the narrow slit runner of control chamber intake-outlet, screw rod enters into the degree of depth of control chamber water inlet pipe and water outlet pipe near the inside of control chamber one end, determined the size of the area of passage of control chamber intake-outlet narrow slit runner, can enter into the degree of depth of control chamber water inlet pipe and water outlet pipe by rotation thumb wheel adjusting screw(rod) near the inside of control chamber one end, and then the size of regulating the area of passage of control chamber intake-outlet narrow slit runner, intake antrum is communicated with water inlet, lock body guide bar support is arranged in the intake antrum, lock body guide rod, one end of lock body guide rod is fixed in the center of the big first end of lock body, the other end of lock body guide rod passes the guide hole of lock body guide bar support, intake antrum is communicated with water chamber by the lock groove, water chamber is provided with delivery port, lock body push-and-pull spring is arranged in the water chamber, the cone point of lock body push-and-pull spring is fixed in microcephaly's one end of lock body, the tapered bottom end of lock body push-and-pull spring is fixed on the barrier film, water chamber and control chamber separate by barrier film, an end that is positioned at the barrier film extension spring of control chamber is fixed on the barrier film, the other end of barrier film extension spring is fixed on the valve body, water inlet, lock body guide rod, the lock body, the lock groove, lock body push-and-pull spring, barrier film, the center of barrier film extension spring lateral cross section all point-blank.
The process that pulse valve forms the pulse current is as follows:
Pressure water enters intake antrum from water inlet, and what be subjected to lock groove inner brake body stops that pressure water can not enter water chamber, and flows out pulse valve.Pressure water in the intake antrum is by the control chamber water inlet pipe and water outlet pipe, the control chamber intake-outlet enters control chamber, pressure in the control chamber and the pressure in the intake antrum reach unanimity, owing to there is not pressure water to flow in the water chamber, the pressure of control chamber is greater than the pressure in the water chamber, barrier film is subjected to the promotion of this pressure reduction, direction to water chamber moves, pressure water in the intake antrum is by the control chamber water inlet pipe and water outlet pipe, the control chamber intake-outlet continues to enter control chamber, barrier film is continued to be moved to the direction of water chamber, the tensile membrane extension spring, lock body push-and-pull spring is compressed, the lock body of attempting to promote to be fixed on the lock body push-and-pull spring leaves the lock groove, allow current pass through, but owing to there is not pressure water to flow in the water chamber, there is huge pressure reduction in lock body both sides, the lock body wouldn't be pushed away the lock groove, lock body push-and-pull spring continues to be compressed, savings energy (elastic force), be enough to obey the huge pressure reduction of lock body both sides up to lock body push-and-pull spring because of being compressed the elastic force of putting aside, the lock body is pushed away the lock groove, the lock body is pushed away the moment of lock groove, the huge pressure reduction that lock body both sides exist rapidly disappears, compressed lock body push-and-pull spring discharges rapidly, promote the lock body and leave the lock groove fast, pressure water stream enters water chamber by the lock groove fast and goes out delivery port, finishes the process of opening pulse valve.
After pressure water enters water chamber, pressure in the water chamber and the pressure in the control chamber reach unanimity, barrier film resets under the pulling of barrier film extension spring gradually, unnecessary water in the control chamber is clamp-oned intake antrum, simultaneously, the barrier film that resets gradually newly enters the lock groove by lock body push-and-pull spring pulling lock body weight, and the blocking-up pressure water enters water chamber, pulse valve is closed, and delivery port does not have pressure water to flow out.
Because, pressure water in the intake antrum is by the control chamber water inlet pipe and water outlet pipe, the control chamber intake-outlet is communicated with control chamber, pressure in the control chamber is consistent with the pressure in the intake antrum, owing to there is not pressure water to flow in the water chamber, the water chamber internal pressure reduces gradually, the pressure of control chamber is greater than the pressure in the water chamber, barrier film is subjected to the promotion of this pressure reduction, direction to water chamber moves, pressure water in the intake antrum is by the control chamber water inlet pipe and water outlet pipe, the control chamber intake-outlet enters control chamber, barrier film is continued to be moved to the direction of water chamber, the tensile membrane extension spring, lock body push-and-pull spring is compressed, the lock body of attempting to promote to be fixed on the lock body push-and-pull spring leaves the lock groove, allow current pass through, but owing to there is not pressure water to flow in the water chamber, there is huge pressure reduction in lock body both sides, the lock body wouldn't be pushed away the lock groove, lock body push-and-pull spring continues to be compressed, savings energy (elastic force), be enough to obey the huge pressure reduction of lock body both sides up to lock body push-and-pull spring because of being compressed the elastic force of putting aside, the lock body is pushed away the lock groove, the lock body is pushed away the moment of lock groove, the huge pressure reduction that lock body both sides exist rapidly disappears, and compressed lock body push-and-pull spring discharges rapidly, promotes the lock body and leaves the lock groove fast, pressure water stream enters water chamber by the lock groove fast and goes out delivery port, finishes the process of opening pulse valve once more.
After pressure water enters water chamber, pressure in the water chamber and the pressure in the control chamber reach unanimity, barrier film resets under the pulling of barrier film extension spring gradually, unnecessary water in the control chamber is clamp-oned intake antrum, simultaneously, the barrier film that resets gradually newly enters the lock groove by lock body push-and-pull spring pulling lock body weight, and the blocking-up pressure water enters water chamber, pulse valve is closed once more, and delivery port does not have pressure water to flow out.
So repeatedly, form the pulse current.Pulse frequency depends on the speed of pressure water turnover control chamber, and the speed of pressure water turnover control chamber depends on the size of control chamber inlet and outlet channel area of passage, and the big I of control chamber inlet and outlet channel area of passage realizes by the degree that rotation thumb wheel adjusting screw(rod) blocks control chamber intake-outlet narrow slit runner.
The utlity model has following good effect:
1, the pulse valve of filter pulsed back purge system of the present utility model, the outstanding feature of the pulse current of formation as shown in Figure 4, it is fast that pressure rises, and descend slow.Zooming pressure can form strong impact to the tamper of strainer screen, make that the tamper that adheres to is easier to come off.Pressure descends then can not produce " water hammer " slowly and causes filter to damage;
2, the pulse valve of filter pulsed back purge system of the present utility model, pulse frequency is adjustable on a large scale, and the adjustment by pulse frequency makes backwash effect best to adapt to different filters;
3, filter pulsed back purge system of the present utility model is installed simply, and repacking is easy, and input cost is low, and backwash efficient height is effective.
Description of drawings:
Fig. 1 is a pulse valve original state schematic diagram.
Fig. 2 opens preceding momentary status schematic diagram for pulse valve.
Fig. 3 opens the back view for pulse valve.
Fig. 4 changes schematic diagram for the pulsating water flowing pressure that pulse valve forms.
The specific embodiment:
A kind of filter pulsed back purge system, after pulse valve being installed in the Water filling valve of filter backwash water injection pipe, again filter screen is carried out backwash after by pulse valve solid stream of water being become the pulse current, pulse valve such as Fig. 1, Fig. 2, shown in Figure 3, comprise: valve body 1, water inlet 2, intake antrum 3, lock body guide bar support 4, lock body guide rod 5, lock body 6, lock groove 7, water chamber 8, lock body push-and-pull spring 9, delivery port 10, barrier film 11, control chamber 12, barrier film extension spring 13, control chamber intake-outlet 14, control chamber water inlet pipe and water outlet pipe 15, screw rod 16, thumb wheel 17, intake antrum 3, water chamber 8, laterally main cross section is circle in control chamber 12 chambeies, lock body 6, lock groove 7 is truncated cone-shaped and contact-making surface coincide mutually, lock body 6 is made by elastomeric material, lock body push-and-pull spring 9 is a volute spring, barrier film 11 is by the ripply soft silastic material circular film of outer rim, cover on the two sides of circular film middle part and fixing circular corrosion resistant plate and making, the area of circular corrosion resistant plate is greater than the major part area of lock body 6, control chamber water inlet pipe and water outlet pipe 15 is a circular cross section, one end of control chamber water inlet pipe and water outlet pipe 15 communicates with intake antrum 3, the other end communicates with control chamber 12 by control chamber intake-outlet 14, control chamber intake-outlet 14 is width narrow slits less than control chamber water inlet pipe and water outlet pipe 15 diameters, narrow slit is positioned at the below of control chamber water inlet pipe and water outlet pipe 15 close control chamber 12 1 ends and communicates with it, one section of close control chamber 12 1 ends of narrow slit length direction and control chamber water inlet pipe and water outlet pipe 15 is parallel, on the screw rod 16 screw thread is arranged, Jie Chu valve body 1 also has respective threads with it, screw thread adopts elastomeric material (for example poly fourfluoroplastics) to make, make it have stagnant water effect, one end of screw rod 16 is positioned at outside the valve body 1 and is fixed with thumb wheel 17, the other end of screw rod 16 enters into the inside of control chamber water inlet pipe and water outlet pipe 15 near control chamber 12 1 ends, and block the narrow slit runner of control chamber intake-outlet 14, screw rod 16 enters into the degree of depth of control chamber water inlet pipe and water outlet pipe 15 near the inside of control chamber 12 1 ends, determined the size of the area of passage of control chamber intake-outlet 14 narrow slit runners, can enter into the degree of depth of control chamber water inlet pipe and water outlet pipe 15 by rotation thumb wheel 17 adjusting screw(rod)s 16 near the inside of control chamber 12 1 ends, and then the size of regulating the area of passage of control chamber intake-outlet 14 narrow slit runners, intake antrum 3 is communicated with water inlet 2, lock body guide bar support 4 is arranged in the intake antrum 3, lock body guide rod 5, one end of lock body guide rod 5 is fixed in the center of the big first end of lock body 6, the other end of lock body guide rod 5 passes the guide hole of lock body guide bar support 4, intake antrum 3 is communicated with water chamber 8 by lock groove 7, water chamber 8 is provided with delivery port 10, lock body push-and-pull spring 9 is arranged in the water chamber 8, the cone point of lock body push-and-pull spring 9 is fixed in microcephaly's one end of lock body 6, the tapered bottom end of lock body push-and-pull spring 9 is fixed on the barrier film 11, water chamber 8 and control chamber 12 separate by barrier film 11, an end that is positioned at the barrier film extension spring 13 of control chamber 12 is fixed on the barrier film 11, the other end of barrier film extension spring 13 is fixed on the valve body 1, water inlet 2, lock body guide rod 5, lock body 6, lock groove 7, lock body push-and-pull spring 9, barrier film 11, the center of barrier film extension spring 13 lateral cross section all point-blank.
The process that pulse valve forms the pulse current is as follows:
As shown in Figure 1, pressure water enters intake antrum 3 from water inlet 2, is subjected to stopping of lock groove 7 inner brake bodies 6, and pressure water can not enter water chamber 8, and flows out pulse valve.Pressure water in the intake antrum 3 is by control chamber water inlet pipe and water outlet pipe 15, control chamber intake-outlet 14 enters control chamber 12, pressure in pressure in the control chamber 12 and the intake antrum 3 reaches unanimity, owing to there is not pressure water to flow in the water chamber 8, the pressure of control chamber 12 is greater than the pressure in the water chamber 8, barrier film 11 is subjected to the promotion of this pressure reduction, direction to water chamber 8 moves, pressure water in the intake antrum 3 is by control chamber water inlet pipe and water outlet pipe 15, control chamber intake-outlet 14 continues to enter control chamber 12, barrier film 11 is continued to be moved to the direction of water chamber 8, tensile membrane extension spring 13, lock body push-and-pull spring 9 is compressed, the lock body of attempting to promote to be fixed on the lock body push-and-pull spring 96 leaves lock groove 7, allow current pass through, but owing to there is not pressure water to flow in the water chamber 8, there is huge pressure reduction in lock body 6 both sides, lock body 6 wouldn't be pushed away lock groove 7, lock body push-and-pull spring 9 continues to be compressed, savings energy (elastic force), as shown in Figure 2, be enough to obey the huge pressure reduction of lock body 6 both sides up to lock body push-and-pull spring 9 because of being compressed the elastic force of putting aside, lock body 6 is pushed away lock groove 7, lock body 6 is pushed away the moment of lock groove 7, the huge pressure reduction that lock body 6 both sides exist rapidly disappears, compressed lock body push-and-pull spring 9 discharges rapidly, promote lock body 6 and leave lock groove 7 fast, pressure water stream enters water chamber 8 by lock groove 7 fast and goes out delivery port 10, as shown in Figure 3, finish the process of opening pulse valve.
After pressure water enters water chamber 8, pressure in pressure in the water chamber 8 and the control chamber 12 reaches unanimity, barrier film 11 resets under the pulling of barrier film extension spring 13 gradually, unnecessary water in the control chamber 12 is clamp-oned intake antrum 3, and simultaneously, the barrier film 11 that resets gradually reenters lock groove 7 by lock body push-and-pull spring 9 pulling lock bodies 6, the blocking-up pressure water enters water chamber 8, pulse valve is closed, and delivery port 10 does not have pressure water to flow out, as shown in Figure 1.
Because, pressure water in the intake antrum 3 is by control chamber water inlet pipe and water outlet pipe 15, control chamber intake-outlet 14 is communicated with control chamber 12, pressure in the control chamber 12 is consistent with the pressure in the intake antrum 3, owing to there is not pressure water to flow in the water chamber 8, water chamber 8 internal pressures reduce gradually, the pressure of control chamber 12 is greater than the pressure in the water chamber 8, barrier film 11 is subjected to the promotion of this pressure reduction, direction to water chamber 8 moves, pressure water in the intake antrum 3 is by control chamber water inlet pipe and water outlet pipe 15, control chamber intake-outlet 14 enters control chamber 12, barrier film 11 is continued to be moved to the direction of water chamber 8, tensile membrane extension spring 13, lock body push-and-pull spring 9 is compressed, the lock body of attempting to promote to be fixed on the lock body push-and-pull spring 96 leaves lock groove 7, allow current pass through, but owing to there is not pressure water to flow in the water chamber 8, there is huge pressure reduction in lock body 6 both sides, lock body 6 wouldn't be pushed away lock groove 7, lock body push-and-pull spring 9 continues to be compressed, savings energy (elastic force), as shown in Figure 2, be enough to obey the huge pressure reduction of lock body 6 both sides up to lock body push-and-pull spring 9 because of being compressed the elastic force of putting aside, lock body 6 is pushed away lock groove 7, lock body 6 is pushed away the moment of lock groove 7, the huge pressure reduction that lock body 6 both sides exist rapidly disappears, compressed lock body push-and-pull spring 9 discharges rapidly, promotes lock body 6 and leaves lock groove 7 fast, and pressure water stream enters water chamber 8 by lock groove 7 fast and goes out delivery port 10, as shown in Figure 3, finish the process of opening pulse valve once more.
After pressure water enters water chamber 8, pressure in pressure in the water chamber 8 and the control chamber 12 reaches unanimity, barrier film 11 resets under the pulling of barrier film extension spring 13 gradually, unnecessary water in the control chamber 12 is clamp-oned intake antrum 3, and simultaneously, the barrier film 11 that resets gradually reenters lock groove 7 by lock body push-and-pull spring 9 pulling lock bodies 6, the blocking-up pressure water enters water chamber 8, pulse valve is closed once more, and delivery port 10 does not have pressure water to flow out, as shown in Figure 1.
So repeatedly, form the pulse current.Pulse frequency depends on the speed of pressure water turnover control chamber 12, and the speed of pressure water turnover control chamber 12 depends on the size of control chamber 12 inlet and outlet channel area of passages, and the big I of control chamber 12 inlet and outlet channel area of passages realizes by the degree that rotation thumb wheel 17 adjusting screw(rod)s 16 block control chamber intake-outlet 14 narrow slit runners.
Claims (1)
1. filter pulsed back purge system, it is characterized in that: after pulse valve being installed in the Water filling valve of filter backwash water injection pipe, again filter screen is carried out backwash after by pulse valve solid stream of water being become the pulse current, pulse valve is by valve body (1), water inlet (2), intake antrum (3), lock body guide bar support (4), lock body guide rod (5), lock body (6), lock groove (7), water chamber (8), lock body push-and-pull spring (9), delivery port (10), barrier film (11), control chamber (12), barrier film extension spring (13), control chamber intake-outlet (14), control chamber water inlet pipe and water outlet pipe (15), screw rod (16), thumb wheel (17) is formed, intake antrum (3), water chamber (8), laterally main cross section is circle in control chamber (12) chamber, lock body (6), lock groove (7) is truncated cone-shaped and contact-making surface coincide mutually, lock body (6) is made by elastomeric material, lock body push-and-pull spring (9) is a volute spring, barrier film (11) is by the ripply soft silastic material circular film of outer rim, cover on the two sides of circular film middle part and fixing circular corrosion resistant plate and making, the area of circular corrosion resistant plate is greater than the major part area of lock body (6), control chamber water inlet pipe and water outlet pipe (15) is a circular cross section, one end of control chamber water inlet pipe and water outlet pipe (15) communicates with intake antrum (3), the other end communicates with control chamber (12) by control chamber intake-outlet (14), control chamber intake-outlet (14) is the narrow slit of width less than control chamber water inlet pipe and water outlet pipe (15) diameter, narrow slit is positioned at the below of close control chamber (12) one ends of control chamber water inlet pipe and water outlet pipe (15) and communicates with it, one section of close control chamber (12) one ends of narrow slit length direction and control chamber water inlet pipe and water outlet pipe (15) is parallel, screw rod has screw thread on (16), Jie Chu valve body (1) also has respective threads with it, screw thread adopts elastomeric material to make, make it have stagnant water effect, one end of screw rod (16) is positioned at outside the valve body (1) and is fixed with thumb wheel (17), the other end of screw rod (16) enters into the inside of control chamber water inlet pipe and water outlet pipe (15) near control chamber (12) one ends, and block the narrow slit runner of control chamber intake-outlet (14), screw rod (16) enters into the degree of depth of control chamber water inlet pipe and water outlet pipe (15) near the inside of control chamber (12) one ends, determined the size of the area of passage of control chamber intake-outlet (14) narrow slit runner, can enter into the degree of depth of control chamber water inlet pipe and water outlet pipe (15) by rotation thumb wheel (17) adjusting screw(rod) (16) near the inside of control chamber (12) one ends, and then the size of regulating the area of passage of control chamber intake-outlet (14) narrow slit runner, intake antrum (3) is communicated with water inlet (2), lock body guide bar support (4) is arranged in the intake antrum (3), lock body guide rod (5), one end of lock body guide rod (5) is fixed in the center of the big first end of lock body (6), the other end of lock body guide rod (5) passes the guide hole of lock body guide bar support (4), intake antrum (3) is communicated with water chamber (8) by lock groove (7), water chamber (8) is provided with delivery port (10), lock body push-and-pull spring (9) is arranged in the water chamber (8), the cone point of lock body push-and-pull spring (9) is fixed in microcephaly's one end of lock body (6), the tapered bottom end of lock body push-and-pull spring (9) is fixed on the barrier film (11), water chamber (8) and control chamber (12) separate by barrier film (11), an end that is positioned at the barrier film extension spring (13) of control chamber (12) is fixed on the barrier film (11), the other end of barrier film extension spring (13) is fixed on the valve body (1), water inlet (2), lock body guide rod (5), lock body (6), lock groove (7), lock body push-and-pull spring (9), barrier film (11), the center of barrier film extension spring (13) lateral cross section all point-blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200836918U CN201978582U (en) | 2011-03-28 | 2011-03-28 | Pulse-type back-flushing device of filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200836918U CN201978582U (en) | 2011-03-28 | 2011-03-28 | Pulse-type back-flushing device of filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201978582U true CN201978582U (en) | 2011-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200836918U Expired - Lifetime CN201978582U (en) | 2011-03-28 | 2011-03-28 | Pulse-type back-flushing device of filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201978582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179097A (en) * | 2011-03-28 | 2011-09-14 | 中国农业科学院农田灌溉研究所 | Pulse type backwashing device for filter |
-
2011
- 2011-03-28 CN CN2011200836918U patent/CN201978582U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179097A (en) * | 2011-03-28 | 2011-09-14 | 中国农业科学院农田灌溉研究所 | Pulse type backwashing device for filter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110921 Effective date of abandoning: 20130306 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110921 Effective date of abandoning: 20130306 |
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| RGAV | Abandon patent right to avoid regrant |