CN102192142B - Annular air bag compensation sealing four-space rotor pump - Google Patents
Annular air bag compensation sealing four-space rotor pump Download PDFInfo
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- CN102192142B CN102192142B CN 201110165254 CN201110165254A CN102192142B CN 102192142 B CN102192142 B CN 102192142B CN 201110165254 CN201110165254 CN 201110165254 CN 201110165254 A CN201110165254 A CN 201110165254A CN 102192142 B CN102192142 B CN 102192142B
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Abstract
The invention discloses an annular air bag compensation sealing four-space rotor pump, which comprises a pump body 4, a shaft rotor 1 arranged on a center through hole 41 of the pump body 4, and a driven rotor 2 arranged on an eccentric half-hole 42 of the pump body 4, wherein working inner end faces of the two rotors are close to a bottom plane 40 of the eccentric half-hole 42; working outer end faces of the two rotors are close to a horizontal frontal plane of a compensating disc 6; the work area outer end face of the eccentric half-hole 42 is provided with an eccentric end cover 5 which is hermetically fixed by using at least three bolts 8; a positioning pin 7 and an annular air bag 9 are arranged between the backside of the compensating disc 6 and the eccentric end cover 5; and the shaft rotor 1 and the driven rotor 2 synchronously generate four axially-stretching sealing strips to form four working spaces A, B, C and D. The structure achieves end face abrasion seal compensation and radial abrasion seal compensation at the same time, and ensures that a high-pressure cavity and a low-pressure cavity are in a good dynamic isolation sealing state for a long time.
Description
Technical field
The invention belongs to mechanical engineering field, International Classification of Patents is the FO4D non-varactor pump, relate to a kind of with mechanical energy be converted to fluid pressure can the transformation of energy displacement pump, refer to a kind of ring-shaped gasbag compensation sealing four Space Rotor pumps especially.
Background technique
Known displacement pump main structure form has: plunger pump, screw pump, Roots pump and sliding vane pump.Have the high advantage of efficient as displacement pump, but all exist its efficient of long-time running wearing and tearing back obviously to reduce, cause the main cause of above-mentioned defective to be that movable isolation of end face between hyperbaric chamber and the low-pressure cavity fail to play effective sealing.The undersized easy heat expansion of end face fit tolerance is stuck firmly, the end face fit tolerance is oversize then fails to play effective sealing, and long-time running wearing and tearing back sealing effect is poorer, and the production line of having to stop is changed pumping unit, causes very big direct waste and indirect loss.
Plunger pump is fit to high pressure but pulse is big, does not possess self-compensating after the wearing and tearing; Screw pump be fit to high viscosity but on unit volume the manufacture cost height, do not possess self-compensating after the wearing and tearing yet; Roots pump is fit to liquids and gases but radially there is the gap in it, and radially with behind the end wear does not possess self-compensating; Sliding vane pump can be accomplished self-compensating after the gauge wear, but does not still possess self-compensating behind the end wear, and the slide plate stuck phenomenon happens occasionally.So far fail to see a kind of effective displacement pump both at home and abroad, can possess the structure function of end wear sealing compensation and gauge wear sealing compensation simultaneously.(its English full name of " SCI " U.S. " science citation index " is Science Citation Index to the U.S.'s three large-engineerings science and technology magazine, is called for short SCI; " EI " U.S. its English full name of Engineering Index is The Engineering Index, is called for short EI; Its English full name of " ISTP " U.S. " scientific and technical conference record index " is Index to Scientific﹠amp; Technical Proceedings is called for short ISTP.) take in global engineering science and technology paper, also not seen has a kind of displacement pump that can possess end wear sealing compensation and gauge wear sealing compensation simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of ring-shaped gasbag compensation sealing four Space Rotor pumps, the technology that possesses end wear sealing compensation and gauge wear sealing compensation simultaneously, to realize being in good movable isolating seal state for a long time between hyperbaric chamber and the low-pressure cavity, remedy the deficiencies in the prior art, fill up the technological gap that displacement pump possesses end wear sealing compensation and gauge wear sealing compensation simultaneously.
To achieve these goals, the invention provides following technological scheme: a kind of ring-shaped gasbag compensation sealing four Space Rotor pumps, comprise the pump housing 4 and be installed in the axle rotor 1 on the central through bore 41 of the pump housing 4 and be installed on off-centre half hole 42 of the pump housing 4 from transferring to 2, the two work inner ends of transferring to are pasting the bottom plane 40 in eccentric half hole 42, the horizontal frontal plane of compensating disc 6 is also being pasted in the work exterior edge face of two rotors, the exterior edge face, working area in eccentric half hole 42 has the screw 8 of at least three of eccentric end cap 5 usefulness airtight fixing, locating stud 7 and ring-shaped gasbag 9 are arranged between the back side of described compensating disc 6 and the eccentric end cap 5, locating stud 7 restriction compensating discs 6 can only be done and endwisely slip, the rebounding force of ring-shaped gasbag 9 makes the back side of compensating disc 6 stressed stressed greater than the front, the work exterior edge face that can be close to two rotors, then force the work inner end of two rotors also to be close to bottom plane 40, possess the end wear sealing compensation; And axle rotor 1 and produce four axially extended sealing strips synchronously from rotor 2, constitute A, B, C and four working spaces of D, can guarantee that still four axially extended sealing strips form synchronously after the long-term use of the experience uniform wear, four axially extended sealing strips that produce guarantee that radially sliding of four working spaces is in effective sealing all the time synchronously.This structure has accomplished to possess simultaneously end wear sealing compensation and gauge wear sealing compensation, realizes being in good dynamic isolation sealing state for a long time between hyperbaric chamber and the low-pressure cavity.
Central through bore on the described pump housing 4 is with " O " type ring recess, the central axis O of central through bore 41 for 41 li
2Eccentric axis O with off-centre half hole 42
1Between eccentric distance t, the preferred value of t is 5 to 20 millimeters, crescent shape suction inlet 47 UNICOMs on the bottom plane 40 import 46, another crescent shape row mouthful 48 UNICOMs outlet 49, and the exterior edge face, working area in eccentric half hole 42 has at least three screws 45 to fixedly connected with screw 8, and screw 45 is with eccentric axis O
1For branches such as the center of circle are arranged.
Described axle rotor 1 comprises four five equilibrium cambered surface active sections 13 and does not have keyway shaft part 11 and shaft with keyway section 12, the inner end of four five equilibrium cambered surface active sections 13 is pasting bottom plane 40, the exterior edge face of four five equilibrium cambered surface active sections 13 is being pasted by the horizontal frontal plane of compensating disc 6, from rotor 2 complete section of five five equilibrium cambered surfaces are arranged, the width of full section both ends of the surface equates consistent with the size of the both ends of the surface width of four five equilibrium cambered surface active sections 13.
Band " O " type ring recess through hole 51 and central axis O on the described eccentric end cap 5
2Coaxial, band " O " type ring recess through hole 51 is slidingly matched with no keyway shaft part 11, has three unthreaded holes 55 that can pass screw 8 at least along the outer circular edge of eccentric end cap 5, and unthreaded hole 55 is with eccentric axis O
1For branches such as the center of circle arrange that locating stud 7 is fastened on eccentric end cap 5 inner ends.
The central axis O of band " O " the type ring recess through hole 61 on the described compensating disc 6
2Eccentric axis O with band " O " type ring recess cylindrical 62
1Between eccentric distance t, hold a ring-shaped gasbag 9 in the back side re-entrant angle 69 of compensating disc 6, the eccentric positioning hole of compensating disc 6 67 is slidingly matched with locating stud 7.Lean against the rebounding force that the inner end at eccentric end cap 5 produces by means of ring-shaped gasbag 9, the horizontal frontal plane of compensating disc 6 is close to the exterior edge face of two rotors all the time, then force the inner end of two rotors also to be close to bottom plane 40, guarantee that the end face slip of four dynamic spaces is in effective sealing all the time.
The central axis O of described axle rotor 1
2With the eccentric axis O from rotor 2
1Between the eccentric distance t that works, four five equilibrium cambered surface active sections 13 of axle rotor 1 with from four point of contact of generation synchronously between five five equilibrium cambered surfaces of rotor 2, cross point of contact and form four axially extended sealing strips, in conjunction with the horizontal frontal plane of bottom plane 40 and compensating disc 6, constitute A, B, C and four dynamic spaces of D.Can guarantee that still four axially extended sealing strips form synchronously after the long-term use of the experience uniform wear, four axially extended sealing strips that produce guarantee that radially sliding of four dynamic spaces is in effective sealing all the time synchronously.
The invention has the beneficial effects as follows: possess end wear sealing compensation and gauge wear sealing compensation simultaneously, realized being in for a long time between hyperbaric chamber and the low-pressure cavity good movable isolating seal state.
Description of drawings
Fig. 1 is that integral body of the present invention is by the sectional drawing of axis.
Fig. 2 is the sectional drawing in W-W cross section among Fig. 1.
Fig. 3 is interior axle rotor 1 and the relative position relation of four dynamic spaces of generation synchronously that is in operation from rotor 2.
Fig. 4 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 50 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 40 the degree after relative position relation.
Fig. 5 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 100 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 80 the degree after relative position relation.
Fig. 6 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 150 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 120 the degree after relative position relation.
Fig. 7 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 200 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 160 the degree after relative position relation.
Fig. 8 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 250 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 200 the degree after relative position relation.
Fig. 9 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 300 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 240 the degree after relative position relation.
Figure 10 is with respect to Fig. 3, and axle rotor 1 is around central axis O
2Be rotated counterclockwise 350 the degree, from rotor 2 around eccentric axis O
1Be rotated counterclockwise 280 the degree after relative position relation.
Figure 11 is the perspective view of a rotor 1.
Figure 12 is a rotor 1 and from the camberline construction drawing of rotor 2.
Embodiment
In conjunction with the accompanying drawings and embodiments, further structure of the present invention and working principle are elaborated.
A kind of ring-shaped gasbag compensation sealing four Space Rotor pumps, comprise the pump housing 4 and be installed in the axle rotor 1 on the central through bore 41 of the pump housing 4 and be installed on off-centre half hole 42 of the pump housing 4 from rotor 2, the work inner end of two rotors is pasting the bottom plane 40 in eccentric half hole 42, the horizontal frontal plane of compensating disc 6 is also being pasted in the work exterior edge face of two rotors, the exterior edge face, working area in eccentric half hole 42 has the screw 8 of eight M6 of eccentric end cap 5 usefulness airtight fixing, locating stud 7 and ring-shaped gasbag 9 are arranged between the back side of described compensating disc 6 and the eccentric end cap 5, locating stud 7 restriction compensating discs 6 can only be done and endwisely slip, the rebounding force of ring-shaped gasbag 9 makes the back side of compensating disc 6 stressed stressed greater than the front, the work exterior edge face that can be close to two rotors, then force the work inner end of two rotors also to be close to bottom plane 40, possess the end wear sealing compensation; And axle rotor 1 and produce four axially extended sealing strips synchronously from rotor 2, constitute A, B, C and four working spaces of D, can guarantee that still four axially extended sealing strips form synchronously after the long-term use of the experience uniform wear, four axially extended sealing strips that produce guarantee that radially sliding of four working spaces is in effective sealing all the time synchronously.This structure has accomplished to possess simultaneously end wear sealing compensation and gauge wear sealing compensation, realizes being in good dynamic isolation sealing state for a long time between hyperbaric chamber and the low-pressure cavity.
Central through bore on the pump housing 4 is with " O " type ring recess, the central axis O of central through bore 41 for 41 li
2Eccentric axis O with off-centre half hole 42
1Between eccentric distance be 6 millimeters, crescent shape suction inlet 47 UNICOMs on the bottom plane 40 import 46, another crescent shape row mouthful 48 UNICOMs outlet 49, and the exterior edge face, working area in eccentric half hole 42 has eight screws 45 to fixedly connected with screw 8, and screw 45 is with eccentric axis O
1For branches such as the center of circle are arranged.
Band " O " type ring recess through hole 51 and central axis O on the eccentric end cap 5
2Coaxial, band " O " type ring recess through hole 51 is slidingly matched with no keyway shaft part 11, and along the outer circular edge of eccentric end cap 5 eight diameters that can pass screw 8 being arranged is 7 millimeters unthreaded hole 55, and unthreaded hole 55 is with eccentric axis O
1For branches such as the center of circle arrange that locating stud 7 is fastened on eccentric end cap 5 inner ends.
The central axis O of the band on the compensating disc 6 " O " type ring recess through hole 61
2Eccentric axis O with band " O " type ring recess cylindrical 62
1Between eccentric distance be 6 millimeters, hold a ring-shaped gasbag 9 in the back side re-entrant angle 69 of compensating disc 6, the eccentric positioning hole of compensating disc 6 67 is slidingly matched with locating stud 7.
Among Figure 12, illustrate a rotor 1 and from the camberline working process of rotor 2 by means of CAD:
The setting-out X of elder generation and vertical line Y1 and line Y2 with it, intersection point is respectively O
1, O
2, O
1With O
2Be 6mm at a distance of get eccentric distance t distance here for eccentric distance t.;
With O
1Be the center of circle, R1 is that radius is made basic circle R1.Here getting the R1 radius is 60mm;
An intersection point with basic circle R1 and line X is the center of circle, and R2 is that radius is made arc section R2, again with O
1Be the center of circle, with arc section R2 around O
1Five five equilibrium annular arrays.Here getting the R2 radius is 33mm;
The distance that is extended to R3 with the intersection point of arc section R2 and line X is the center of circle, is that the intersection point that radius is crossed arc section R2 and line X is made arc section R3 with R3, again with O
2Be the center of circle, with arc section R3 around O
2Quartering annular array.Here getting the R3 radius is 50mm;
Choose two arc section R3 and an arc section R2 respectively, the tangent arc section R4 that does of four lines gets the R4 radius here and is approximately 4.8mm;
Be that radius is made arc section R5 respectively and connected two adjacent arc section R2 with R5, the R5 radius is 40mm here.
Article four, four point of contact alternately producing synchronously with four arc section R2 of arc section R4 are crossed point of contact and are formed four axially extended sealing strips, constitute A, B, C and four dynamic spaces of D.Experience is long-term use uniform wear after, four point of contact that produce synchronously form four axially extended sealing strips can guarantee that still four axially extended sealing strips form synchronously, that guarantees four dynamic spaces radially is in effective sealing all the time.
The both ends of the surface width of four five equilibrium cambered surface active sections 13 of axle rotor 1 is equal consistent with size from the both ends of the surface width of rotor 2, here getting the both ends of the surface width all is 50mm, the inner end of two rotors is all pasting bottom plane 40, and the horizontal frontal plane of compensating disc 6 is pasting the exterior edge face of two rotors simultaneously.Lean against the rebounding force that the inner end at eccentric end cap 5 produces by means of ring-shaped gasbag 9, the horizontal frontal plane of compensating disc 6 is close to the exterior edge face of two rotors all the time, then force the inner end of two rotors also to be close to bottom plane 40, guarantee that the end face slip of four dynamic spaces is in effective sealing all the time.
Installation steps and working principle:
The shaft with keyway section 12 of axle rotor 1 is 40 1 sides from the bottom plane, pass central through bore 41 and are slidingly matched with it, and the inner end of four five equilibrium cambered surface active sections 13 is pasting bottom plane 40.Be placed in eccentric half hole 42 from rotor 2 and be slidingly matched, also pasting bottom plane 40 from the inner end of rotor 2;
The horizontal frontal plane of compensating disc 6 inwardly, band " O " type ring recess through hole 61 is inserted in from no keyway shaft part 11 1 ends of axle rotor 1 and is slidingly matched, band " O " type ring recess cylindrical 62 is slidingly matched with eccentric half hole 42, the horizontal frontal plane of compensating disc 6 is pasting the work exterior edge face of two rotors, and the inner ring of ring-shaped gasbag 9 is enclosed within on the back side re-entrant angle 69 of compensating disc 6.
The back side of compensating disc 6 has positioning hole 67 and locating stud 7 to be slidingly matched, and locating stud 7 is fastenedly connected with eccentric end cap 5, thereby compensating disc 6 can only be made axial slip with respect to eccentric end cap 5.
Band " O " type ring recess through hole 51 on the eccentric end cap 5 is inserted in from no keyway shaft part 11 1 ends of axle rotor 1 and is slidingly matched, and makes locating stud 7 aim at eccentric positioning hole 67.Eight M6 screws 8 pass unthreaded hole 55, on the airtight screw 45 that is fixed on the pump housing 4 of eccentric end cap 5 shimmings 54.
" O " type circle in all " O " type ring recess plays the motive sealing effect at position of living in.
During work, external force drives 1 rotation of axle rotor by shaft with keyway section 12, stirs then from rotor 2 rotations.It is 6 millimeters from both rotating center deviation distances of rotor 2 and axle rotor 1, four five equilibrium cambered surface active sections 13 of axle rotor 1 with from four axially extended sealing strips of generation synchronously between five five equilibrium cambered surfaces of rotor 2, in conjunction with the horizontal frontal plane of bottom plane 40 and compensating disc 6, constitute A, B, C and four dynamic spaces of D.During rotation, A, B, C and four dynamic spaces of D along with rotation will become a big side gradually and be crescent shape suction inlet 47, lead to import 46; One side that will diminish gradually along with rotation of A, B, C and four dynamic spaces of D is crescent shape row mouth 48, leads to outlet 49.Axle rotor 1 rotation continuously orders about A, B, C and four dynamic spaces of D and goes round and begins again and finish suction, row's work.
At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be regarded as protection scope of the present invention.
Claims (1)
1. ring-shaped gasbag compensation sealing four Space Rotor pumps, comprise the pump housing (4) and be installed in the axle rotor (1) on the central through bore (41) of the pump housing (4) and be installed on off-centre half hole (42) of the pump housing (4) from rotor (2), the work inner end of two rotors is pasting the bottom plane (40) in eccentric half hole (42), the horizontal frontal plane of compensating disc (6) is also being pasted in the work exterior edge face of two rotors, the exterior edge face, working area in eccentric half hole (42) has eccentric end cap (5) next airtight fixing with at least three screw (8), it is characterized in that: locating stud (7) and ring-shaped gasbag (9) are arranged between the back side of compensating disc (6) and the eccentric end cap (5); " O " type ring recess, the central axis O of central through bore (41) are with in central through bore (41) lining on the described pump housing (4)
2Eccentric axis O with off-centre half hole (42)
1Between eccentric distance t, crescent shape suction inlet (47) UNICOM on the bottom plane (40) import (46), another crescent shape row mouthful (48) UNICOM outlet (49), and the exterior edge face, working area in eccentric half hole (42) has at least three screws (45) to fixedly connected with screw (8), and screw (45) is with eccentric axis O
1For branches such as the center of circle are arranged; Described axle rotor (1) comprises four five equilibrium cambered surface active sections (13) and does not have keyway shaft part (11) and shaft with keyway section (12), the inner end of four five equilibrium cambered surface active sections (13) is pasting bottom plane (40), the exterior edge face of four five equilibrium cambered surface active sections (13) is being pasted by the horizontal frontal plane of compensating disc (6), from rotor (2) complete section of five five equilibrium cambered surfaces are arranged, the width of full section both ends of the surface equates consistent with the size of the both ends of the surface width of four five equilibrium cambered surface active sections (13); Band " O " type ring recess through hole (51) on the described eccentric end cap (5) and central axis O
2Coaxial, band " O " type ring recess through hole (51) is slidingly matched with no keyway shaft part (11), has three unthreaded holes (55) that can pass screw (8) at least along the outer circular edge of eccentric end cap (5), and unthreaded hole (55) is with eccentric axis O
1For branches such as the center of circle arrange that locating stud (7) is fastened on eccentric end cap (5) inner end; The central axis O of band " O " the type ring recess through hole (61) on the described compensating disc (6)
2Eccentric axis O with band " O " type ring recess cylindrical (62)
1Between eccentric distance t, hold a ring-shaped gasbag (9) in the back side re-entrant angle (69) of compensating disc (6), the eccentric positioning hole (67) of compensating disc (6) and locating stud (7) are slidingly matched; The central axis O of described axle rotor (1)
2With the eccentric axis O from rotor (2)
1Between the eccentric distance t that works, four five equilibrium cambered surface active sections (13) of axle rotor (1) with from synchronous four point of contact of generation between five five equilibrium cambered surfaces of rotor (2), cross point of contact and form four axially extended sealing strips, in conjunction with the horizontal frontal plane of bottom plane (40) and compensating disc (6), constitute A, B, C and four dynamic spaces of D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110165254 CN102192142B (en) | 2011-06-07 | 2011-06-07 | Annular air bag compensation sealing four-space rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110165254 CN102192142B (en) | 2011-06-07 | 2011-06-07 | Annular air bag compensation sealing four-space rotor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102192142A CN102192142A (en) | 2011-09-21 |
| CN102192142B true CN102192142B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110165254 Expired - Fee Related CN102192142B (en) | 2011-06-07 | 2011-06-07 | Annular air bag compensation sealing four-space rotor pump |
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| CN (1) | CN102192142B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410211B (en) * | 2011-12-06 | 2015-04-01 | 温州市张衡科技服务有限公司 | Annular gasbag compensation inner and outer gear wheel pump |
| CN102536797B (en) * | 2011-12-23 | 2016-10-05 | 温州市张衡科技服务有限公司 | A kind of compensation gear pump for air pocket rings |
| CN109124726A (en) * | 2018-07-11 | 2019-01-04 | 芜湖帮许来诺医疗设备科技有限公司 | A kind of artery turnery interposers |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2742821C2 (en) * | 1977-09-23 | 1982-11-25 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Gear pump with constant flow direction when the drive direction changes |
| DE2936066A1 (en) * | 1978-09-12 | 1980-03-20 | Concentric Pumps Ltd | Gear pump with gear ring rotating in eccentric bush - has stops limiting its rotation and friction elements between ring and bush |
| CN2074382U (en) * | 1990-08-08 | 1991-04-03 | 武汉市硚口区永泰机械五金厂 | Automatic control flow direction cycloidal rotary lubricating pump |
| CN2104325U (en) * | 1991-04-19 | 1992-05-13 | 田昌桃 | New-type cycloidal lubricating pump |
| CN2443175Y (en) * | 2000-10-11 | 2001-08-15 | 张茂华 | Submersible pump |
| CN201391437Y (en) * | 2009-04-24 | 2010-01-27 | 杭州千岛湖陆行泵业有限公司 | Lubricant pump of semi-enclosed refrigerating compressor |
| CN202082094U (en) * | 2011-06-07 | 2011-12-21 | 张意立 | Annular air bag compensation seal four-space rotor pump |
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2011
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Effective date of registration: 20170308 Address after: 226100 Guangzhou road Jiangsu city Nantong Province Haimen Economic and Technological Development Zone No. 999 Patentee after: JIANGSU CHANGJIANGKOU DEVELOPMENT GROUP CO., LTD. Address before: 325000 Zhejiang Province, Lucheng District, South Gate Street, building, room No. 1, building, Room 303 Patentee before: Zhang Yili |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20170607 |