CN2861278Y - Floating material processor - Google Patents

Floating material processor Download PDF

Info

Publication number
CN2861278Y
CN2861278Y CN 200520006457 CN200520006457U CN2861278Y CN 2861278 Y CN2861278 Y CN 2861278Y CN 200520006457 CN200520006457 CN 200520006457 CN 200520006457 U CN200520006457 U CN 200520006457U CN 2861278 Y CN2861278 Y CN 2861278Y
Authority
CN
China
Prior art keywords
floating thing
lifting
support
collector
hydrodynamic
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
Application number
CN 200520006457
Other languages
Chinese (zh)
Inventor
宋宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 200520006457 priority Critical patent/CN2861278Y/en
Application granted granted Critical
Publication of CN2861278Y publication Critical patent/CN2861278Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

Disclosed is a floater handling device pertaining to water treatment system. A floater collecting system is provided on right supporting frame (2) and left supporting frame (34) with combined axle (3) and central axle (33); a hydro-power wheel equipment (30) is provided on the central axle; a conveying belt system consists of a primary conveying belt and a secondary conveying belt, which are separately provided on a lifting transmission rod (44) and a secondary conveying support frame (62); a sundries suck collecting system is provided on the lifting transmission rod (52), lifting is controlled by lifting rod. The sloping board sedimentation and mud ejecting bed system is provided on the left supporting frame (34) of floater collector and connected to the lifting transmission rod (44). The floater collector controls the lifting of the primary conveying system, the floater collection system and the sloping board sedimentation and mud ejecting bed system by integrating the lifting rod. The utility model adopts machine to deal and collect floater. Operation capability is strong, collection speed is fast, and the power of equipment adopts combination of out supplied power source and hydropower. The utility model would save operation cost; and can deal with floating pollution on water surface and river quickly and safely.

Description

The floating thing processor
Technical field: the utility model relates to sewage-treatment plant, particularly a kind of floating thing processor.
Background technology: the floating thing of handling at present on the water surface adopts two kinds of methods substantially, a kind of is that the water surface is manually caught salvaging, and second kind is to be lower than the water surface in check dam one place perforate to release, to increase water surface water flow velocity, make floating thing accumulate in the mudhole place, salvage and handle or be discharged into the downstream.The shortcoming of first method is, method is simply original, and hand labor intensity is big, and is dangerous high, and prosperous water is during season, and floater increases severely, and this processing method can not solve floating thing fully and remove problem.Though second method has solved the safety issue and the labour intensity problem of manual work, but concentrate floating thing is disposed to the downstream water surface, finally cause the pollution of the downstream river course water surface, and floating thing quickens to compile to pile up Ba Kongchu by current, strengthened bearing load to check dam, made dam, river levee outlet grid place bury hidden danger.
Summary of the invention: the purpose of this utility model is to provide a kind of floating thing processor, utilizes this floating thing processor can handle the water surface, river course floating pollutants better, fast, safely, reaches the purpose of clean water.
Formation of the present utility model: by the floating thing acquisition system, belt system, the dirt sucking device system, sloping plate deposition spoil disposal bed system, support workbench protective guard member, lifting gear system and hydrodynamic force wheel system are formed, floating thing processor main body rack is by floating thing collector right support 2, left socle 34, dirt sucking device system frame 53 and collector dirt sucking device sectional shelf-unit 55,56 constitute, plate impeller blade 17 between the floating thing collector, 19,21,23,26,27,29 are connected above the fixed disc 41, fixed disc 41 is connected plectane 42 and is installed on floating thing collector right support 2 and the left socle 34 by floating thing collector assembly axle 3 and hydrodynamic(al) wheels central axis 33 with central axis, hydrodynamic force wheel apparatus 30 is installed on hydrodynamic(al) wheels central axis 33, dirt sucking device lifting swing arm 15,24,32 are installed on the dirt sucking device lifting swing arm external fixer 54, and the floating thing collector assembly is integrated lifting swing arm 16,20,25,28,31 are installed on the collector assembly lifting swing arm external fixer 58; Break-in arbor wheel 63 on the main conveyor belt assembly, main transmission arbor wheel 12 and driven pulley 65 are separately fixed on the support support 57 by power transmission shaft wheel axle center 64, main conveyor belt carrier bar 13 wraps on break-in arbor wheel 63, main transmission arbor wheel 12 and driven pulley 65, main conveyor belt grid 22 is fixed on the support support 57, motor 10 is fixed on the support support 57, is connected with main transmission arbor wheel 12 with driving-belt 11 by belt pulley; Tail end at main conveyor belt carrier bar 13 is secondary conveyer belt, secondary conveyer belt break-in live roller 7, transmission arbor wheel 61, initiatively arbor wheel 60 and motor 4 are separately fixed on the support 62, motor 4 is connected with active arbor wheel 60 with driving-belt by belt pulley 59, secondary conveyer belt carrier bar 9 is sleeved on secondary conveyer belt break-in live roller 7, initiatively on arbor wheel 60 and the transmission arbor wheel 61, on secondary conveyer belt carrier bar 9, install and load holder bucket 8, place pollutant loading and unloading trolley 6 on the ground below support 62 is high-end, on workbench guard rail 18, take dress stair 5 motors 46, discharge tube 45, connecting rod pulley 48 is separately fixed on the support 47, form dirt sucking device main component and integral installation on guide rail 50, guide rail 50 is fixed on the grid component pedestal 49 with grid, and this dirt sucking device system is fixed on the lifting kinematic link 52; Sloping plate deposition spoil disposal bed system, swash plate 36 is fixed between holder bed side end panel 1 and the holder bed bottom plate 40, holder bed side end panel 1 and holder bed bottom plate 40 are contained in hydrodynamic(al) wheels central axis 33 and go on the mud pipeline 37, go the mud pipeline to be connected holder bed side end panel 1 and holder bed bottom plate 40 bottoms, water inlet 38 is arranged on it, check mechanism 39 is connected on mud pipeline 37 and the disk control device 43, and sloping plate deposition spoil disposal bed system is fixed on the floating thing collector left socle 34 and with lifting kinematic link 44 and is connected.
Hydrodynamic force wheel apparatus 30 is made up of oblique angle blade, collection blade and hydrodynamic(al) wheels central axis, oblique angle blade 66 is arranged on hydrodynamic force wheel apparatus 30, on oblique angle blade 66, be equipped with and gather blade 67, there is hydrodynamic(al) wheels central axis 33 at two ends, one end of hydrodynamic(al) wheels central axis 33 is connected with floating thing collector left socle 34, and the other end is connected plectane 42 and connects with floating thing collector central axis.
Compared with the prior art, the utility model adopts machine processing to collect floating thing, and work capacity is big, and gathering speed is fast, makes floating thing can not be deposited in dam, river levee delivery port, has solved the dykes and dams safety issue.This floating thing processor has solved floating thing and has reclaimed problem, avoided secondary pollution, great advantage of the present utility model is that equipment dynamic takes outer power supply source power to combine with hydrodynamic force, be the little or river of discharge when flat, withered season, the equipment operation just can normally move by hydrodynamic apparatus, and this has reduced the running cost of equipment greatly.
Description of drawings: Fig. 1 is the utility model structural representation; Fig. 2 is the A place enlarged drawing of Fig. 1; Fig. 3 is the left view of Fig. 1; Fig. 4 is the main conveyor belt schematic diagram; Fig. 5 is secondary conveyer belt schematic diagram; Fig. 6 is a hydrodynamic force wheel apparatus schematic diagram.
1. holder bed side end panel among the figure, 2. floating thing collector right support, 3. floating thing collector assembly axle, 4. motor, 5. stair, 6. pollutant loads and unloads trolley, 7. secondary conveyer belt break-in live roller, 8. load the holder bucket, 9. secondary conveyer belt carrier bar, 10. motor, 11. driving-belt, 12. main transmission arbor wheel, 13. main conveyor belt carrier bar, 14. the support of table, 15. dirt sucking device lifting swing arm, 16. the floating thing collector assembly is integrated the lifting swing arm, 17. plate impeller blade between the floating thing collector, 18. workbench protection railing, 19. plate impeller blade between the floating thing collector, 20. the lifting swing arm is integrated in the floating thing collection, 21. plate impeller blade between the floating thing collector, 22. main conveyor belt grids, plate impeller blade between 23. floating thing collectors, 24. dirt sucking device lifting swing arm, 25. the floating thing collector is integrated lifting swing arm, plate impeller blade between 26. floating thing collectors, plate impeller blade between 27. floating thing collectors, 28. the floating thing collector is integrated the lifting swing arm, 29. plate impeller blade between the floating thing collector, 30. hydrodynamic force wheel apparatus, 31. floating thing collectors are integrated the lifting swing arm, 32. dirt sucking device lifting swing arm, 33. hydrodynamic(al) wheels central axis, 34. floating thing collector left socles, 35. tilted plate separator holder bed side end panel, 36. swash plate, 37. remove the mud pipeline, 38. water inlets, 39. check mechanism, 40. holder bed bottom plate, 41. fixed disc, 42. central axiss connect plectane, 43. disk control devices, 44. lifting kinematic link, 45. discharge tube, 46. motors, 47. supports, 48. connecting rod pulley, 49. the grid component pedestal, 50. guide rails, 51. dirt sucking device soil pick-up covers, 52. lifting kinematic link, 53. the dirt sucking device system frame, 54. dirt sucking device lifting swing arm external fixers, 55. collector dirt sucking device sectional shelf-units, 56. collector dirt sucking device sectional shelf-unit, 57. the support support, 58. collector assembly lifting swing arm external fixers, 59. belt pulleys, 6 (). the active arbor wheel, 61. the transmission arbor wheel, 62. supports, 63. break-in arbor wheels, 64. power transmission shaft wheel axle center, 65. driven pulley, 66. oblique angle blades, 67. gather blade.
The specific embodiment: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, floating thing processor main body rack is made of floating thing collector right support 2, left socle 34, dirt sucking device system frame 53 and collector dirt sucking device sectional shelf-unit 55,56, it plays the support bearing effect to other system, workbench guard rail 18, stair 5 are fixed on the main body rack, and the support of table 14 is installed on the floating thing collector right support 2.
Plate impeller blade 17,19,21,23,26,27,29 is connected above the fixed disc 41 between the floating thing collector, fixed disc 41 is installed on floating thing collector right support 2 and the left socle 34 by floating thing collector assembly axle 3 and hydrodynamic(al) wheels central axis 33, and hydrodynamic force wheel apparatus 30 is installed on hydrodynamic(al) wheels central axis 33.When water impact hydrodynamic force impeller blade, the hydrodynamic(al) wheels obtains rotating energy, between the plate impeller blade hold up floating pollutant of coming thereupon, when the hydrodynamic(al) wheels is rotated further and is moved to main conveyor belt carrier bar 13 tops and becomes certain angle of inclination, floating thing slips on the main conveyor belt carrier bar 13 voluntarily, finishes the collection and treatment action.
The conveyer belt component system: the break-in arbor wheel 63 on the main conveyor belt assembly, main transmission arbor wheel 12 and driven pulley 65 are separately fixed on the support support 57 by power transmission shaft wheel axle center 64, main conveyor belt carrier bar 13 wraps on break-in arbor wheel 63, main transmission arbor wheel 12 and driven pulley 65, main conveyor belt grid 22 is fixed on the support support 57, motor 10 is fixed on the support support 57, be connected with main transmission arbor wheel 12 with driving-belt 11 by belt pulley, drive main conveyor belt carrier bar 13 behind the starter motor and do circulatory motion, floating thing is transported on the secondary conveyer belt.
Tail end at main conveyor belt carrier bar 13 is secondary conveyer belt, secondary conveyer belt break-in live roller 7, transmission arbor wheel 61, initiatively arbor wheel 60 and motor 4 are separately fixed on the support 62, motor 4 is connected with active arbor wheel 60 with driving-belt by belt pulley 59, secondary conveyer belt carrier bar 9 is sleeved on secondary conveyer belt break-in live roller 7, initiatively on arbor wheel 60 and the transmission arbor wheel 61, on secondary conveyer belt carrier bar 9, install and load holder bucket 8, motor 4 is connected power supply, driving initiatively by belt pulley 59, arbor wheel 60 rotates, drive secondary conveyer belt carrier bar 9 and do the triangular ring operation, loading holder bucket 8 connects down the floating thing that main conveyor belt carrier bar 13 slips into and moves to high-end place, load 8 upsets of holder bucket floating thing is poured in the following pollutant loading and unloading trolley 6, finish and collect the loading and unloading action.
The dirt sucking device assembly, motor 46, discharge tube 45, connecting rod pulley 48 are separately fixed on the support 47, dirt sucking device soil pick-up cover 51 links to each other with support 47, form dirt sucking device main component and integral installation on guide rail 50, guide rail 50 is fixed on the grid component pedestal 49 with grid, and this dirt sucking device system is fixed on the lifting kinematic link 52, behind the connection power supply, pulley rotates along the guide rail back and forth movement, finishes absorption, the work of discharging floating thing.
Lifting gear, dirt sucking device lifting swing arm 15,24,32 are installed on the dirt sucking device lifting swing arm external fixer 54, the floating thing collector assembly is integrated lifting swing arm 16,20,25,28,31 are installed on the collector assembly lifting swing arm external fixer 58, lifting kinematic link 52 and dirt sucking device lifting swing arm 32 are formed the lifting gear of dirt sucking devices, rotation dirt sucking device lifting swing arm 32, make lifting kinematic link 52 do operation up and down, to reach the purpose of lifting, lifting kinematic link 44 is integrated lifting swing arm 31 with the floating thing collector and is formed the main conveyor belt system, the integration lifting gear of floating thing acquisition system and sloping plate deposition spoil disposal bed three big systems, operate this lifting gear, coordinate the lifting problem of the three big systems that solved.The water surface fluctuation occurs with seasonal variations, dirt sucking device, collector is coordinated in the appropriate position of the water surface, for accurate, overall treatment floating thing provide assurance.
Sloping plate deposition spoil disposal bed system, swash plate 36 is fixed between holder bed side end panel 1 and the holder bed bottom plate 40, holder bed side end panel 1 and holder bed bottom plate 40 are contained in hydrodynamic(al) wheels central axis 33 and go on the mud pipeline 37, go the mud pipeline to be connected holder bed side end panel 1 and holder bed bottom plate 40 bottoms, water inlet 38 is arranged on it, check mechanism 39 is connected on mud pipeline 37 and the disk control device 43, and tilted plate separator holder bed side end panel 35 is fixed on the floating thing collector left socle 34 and with lifting kinematic link 44 with sloping plate deposition spoil disposal bed system and is connected.When water goes mud pipeline 37 to flow to the top from the settler bottom; current between the swash plate are in laminar condition; each layer separates mutually and do not disturb; for very favourable hydraulics has been created in the sedimentation of immobilized particles in the water; particle behind sloping plate deposition slips into mud pipeline 37; go the mud pipeline to connect suction pump, will precipitate silt particle and discharge.
As shown in Figure 6, it is the hydrodynamic force wheel apparatus, hydrodynamic force wheel apparatus 30 is made up of oblique angle blade, collection blade and hydrodynamic(al) wheels central axis, oblique angle blade 66 is arranged on hydrodynamic force wheel apparatus 30, on oblique angle blade 66, be equipped with and gather blade 67, there is hydrodynamic(al) wheels central axis 33 at two ends, and an end of hydrodynamic(al) wheels central axis 33 is connected with floating thing collector left socle 34, and the other end is connected plectane 42 and connects with floating thing collector central axis.Hydrodynamic(al) wheels 30 is starting drives of each collector.

Claims (2)

1. floating thing processor, by the floating thing acquisition system, belt system, the dirt sucking device system, sloping plate deposition spoil disposal bed system, support workbench protective guard member, lifting gear system and hydrodynamic force wheel system are formed, it is characterized in that: floating thing processor main body rack is by floating thing collector right support (2), left socle (34), dirt sucking device system frame (53) and collector dirt sucking device sectional shelf-unit (55) (56) constitute, plate impeller blade (17) (19) (21) (23) (26) (27) (29) is connected above the fixed disc (41) between the floating thing collector, fixed disc (41) is connected plectane (42) and is installed on floating thing collector right support (2) and the left socle (34) by floating thing collector assembly axle (3) and hydrodynamic(al) wheels central axis (33) with central axis, go up installation hydrodynamic force wheel apparatus (30) at hydrodynamic(al) wheels central axis (33), dirt sucking device lifting swing arm (15) (24) (32) is installed on the dirt sucking device lifting swing arm external fixer (54), and the floating thing collector assembly is integrated lifting swing arm (16) (20) (25) (28) (31) and is installed on the collector assembly lifting swing arm external fixer (58); Break-in arbor wheel (63) on the main conveyor belt assembly, main transmission arbor wheel (12) and driven pulley (65) are separately fixed on the support support (57) by power transmission shaft wheel axle center (64), main conveyor belt carrier bar (13) wraps on break-in arbor wheel (63), main transmission arbor wheel (12) and driven pulley (65), main conveyor belt grid (22) is fixed on the support support (57), motor (10) is fixed on the support support (57), is connected with main transmission arbor wheel (12) with driving-belt (11) by belt pulley; Tail end at main conveyor belt carrier bar (13) is secondary conveyer belt, secondary conveyer belt break-in live roller (7), transmission arbor wheel (61), initiatively arbor wheel (60) and motor (4) are separately fixed on the support (62), motor (4) is connected with active arbor wheel (60) with driving-belt by belt pulley (59), secondary conveyer belt carrier bar (9) is sleeved on secondary conveyer belt break-in live roller (7), initiatively on arbor wheel (60) and the transmission arbor wheel (61), go up installation at secondary conveyer belt carrier bar (9) and load holder bucket (8), on the ground of the high-end below of support (62), place pollutant loading and unloading trolley (6), on workbench guard rail (18), take dress stair (5); Motor (46), discharge tube (45), connecting rod pulley (48) are separately fixed on the support (47), form dirt sucking device main component and integral installation on guide rail (50), guide rail (50) is fixed on the grid component pedestal (49) with grid, and this dirt sucking device system is fixed on the lifting kinematic link (52); Sloping plate deposition spoil disposal bed system, swash plate (36) is fixed between holder bed side end panel (1) and the holder bed bottom plate (40), holder bed side end panel (1) and holder bed bottom plate (40) are contained in hydrodynamic(al) wheels central axis (33) and go on the mud pipeline (37), go the mud pipeline to be connected holder bed side end panel (1) and holder bed bottom plate (40) bottom, water inlet (38) is arranged on it, check mechanism (39) is connected on mud pipeline (37) and the disk control device (43), and sloping plate deposition spoil disposal bed system is fixed in floating thing collector left socle (34) and upward and with lifting kinematic link (44) is connected.
2. floating thing processor according to claim 1, it is characterized in that: hydrodynamic force wheel apparatus (30) is made up of oblique angle blade, collection blade and hydrodynamic(al) wheels central axis, oblique angle blade (66) is arranged on hydrodynamic force wheel apparatus (30), on oblique angle blade (66), be equipped with and gather blade (67), there is hydrodynamic(al) wheels central axis (33) at two ends, one end of hydrodynamic(al) wheels central axis (33) is connected with floating thing collector left socle (34), and the other end is connected plectane (42) and connects with floating thing collector central axis.
CN 200520006457 2005-12-15 2005-12-15 Floating material processor Expired - Fee Related CN2861278Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520006457 CN2861278Y (en) 2005-12-15 2005-12-15 Floating material processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520006457 CN2861278Y (en) 2005-12-15 2005-12-15 Floating material processor

Publications (1)

Publication Number Publication Date
CN2861278Y true CN2861278Y (en) 2007-01-24

Family

ID=37658907

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520006457 Expired - Fee Related CN2861278Y (en) 2005-12-15 2005-12-15 Floating material processor

Country Status (1)

Country Link
CN (1) CN2861278Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409649A (en) * 2011-09-19 2012-04-11 河海大学 Collector for floating pollutants in water transfer channel
CN104264645A (en) * 2014-10-24 2015-01-07 贵州师范大学 River course garbage salvage device
CN104652376A (en) * 2015-01-29 2015-05-27 无锡昊瑜节能环保设备有限公司 Cut-off equipment for solid waste in river
CN106799084A (en) * 2017-03-17 2017-06-06 衢州图艺工业设计有限公司 A kind of many filter screen circulating collection floating bead devices
CN107711682A (en) * 2017-11-09 2018-02-23 上海能正渔业科技开发有限公司 A kind of cableway draws sewage suction device
CN108824394A (en) * 2018-06-28 2018-11-16 宋海军 A kind of cleaning plant for river shallow water beach gentle slope hydrodynamic force floating refuse

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102409649A (en) * 2011-09-19 2012-04-11 河海大学 Collector for floating pollutants in water transfer channel
CN104264645A (en) * 2014-10-24 2015-01-07 贵州师范大学 River course garbage salvage device
CN104652376A (en) * 2015-01-29 2015-05-27 无锡昊瑜节能环保设备有限公司 Cut-off equipment for solid waste in river
CN106799084A (en) * 2017-03-17 2017-06-06 衢州图艺工业设计有限公司 A kind of many filter screen circulating collection floating bead devices
CN106799084B (en) * 2017-03-17 2022-07-01 衢州图艺工业设计有限公司 Multi-filter-screen circulating collection floating bead device
CN107711682A (en) * 2017-11-09 2018-02-23 上海能正渔业科技开发有限公司 A kind of cableway draws sewage suction device
CN107711682B (en) * 2017-11-09 2023-12-12 上海能正渔业科技开发有限公司 Cableway traction dirt suction device
CN108824394A (en) * 2018-06-28 2018-11-16 宋海军 A kind of cleaning plant for river shallow water beach gentle slope hydrodynamic force floating refuse
CN108824394B (en) * 2018-06-28 2020-06-12 谢文浩 Cleaning device for hydrodynamic floating garbage on gentle slope of river channel shoal

Similar Documents

Publication Publication Date Title
CN2861278Y (en) Floating material processor
WO2024016531A1 (en) Caterpillar track robot for cleaning photovoltaic panel
CN112722172A (en) Hybrid power type water surface garbage cleaning device and control method thereof
US7357872B2 (en) Lift station and method
CN107882092A (en) A kind of dredger
EP1122024B1 (en) Lift station and method for shallow depth liquid flows
CN113565072A (en) Special floater interception cleaning device of reservoir
CN112359782A (en) Ocean current garbage cleaning equipment for water inlet of hydropower station
WO2024016537A1 (en) Unpowered filtering and debris-clearing device
CN212477893U (en) Dig quick-witted dust device
CN112942277A (en) Unmanned ship for cleaning duckweeds on river surface and using method thereof
CN110593231B (en) Water surface leaf cleaning device for pumped storage power station
CN209686490U (en) A kind of underwater silt remover
CN219343360U (en) Sluice bottom plate silt cleaning equipment
CN205995093U (en) A kind of purlin vehicle type bagger
CN111330729A (en) Swamp mud stone and yellow sand separating device
CN216304752U (en) River course sediment removal device for hydraulic engineering
CN215290336U (en) River course desilting equipment is used in hydraulic engineering construction
CN111420431B (en) Sand setting device for sewage treatment
CN206750092U (en) A kind of deck network chain conveying device
CN213775627U (en) Water pumping device for underground coal mine
CN217053276U (en) Vertical double-beam trash remover
CN220301511U (en) Municipal road drainage dredging device
CN218148235U (en) Water conservancy river course upper garbage fishing device with good collecting effect
CN218061583U (en) Wall skin removing device for interior decoration

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee