CN104941512A - Reciprocating drum-type bio-organic fertilizer granulating machine - Google Patents

Reciprocating drum-type bio-organic fertilizer granulating machine Download PDF

Info

Publication number
CN104941512A
CN104941512A CN201510399114.2A CN201510399114A CN104941512A CN 104941512 A CN104941512 A CN 104941512A CN 201510399114 A CN201510399114 A CN 201510399114A CN 104941512 A CN104941512 A CN 104941512A
Authority
CN
China
Prior art keywords
cylinder
drum
hopper
finished
pipe
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.)
Granted
Application number
CN201510399114.2A
Other languages
Chinese (zh)
Other versions
CN104941512B (en
Inventor
周洪亮
韩正青
楚宪省
董新刚
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.)
SHANDONG HUAYI HEAVY INDUSTRY MACHINERY Co Ltd
Original Assignee
SHANDONG HUAYI HEAVY INDUSTRY MACHINERY Co Ltd
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 SHANDONG HUAYI HEAVY INDUSTRY MACHINERY Co Ltd filed Critical SHANDONG HUAYI HEAVY INDUSTRY MACHINERY Co Ltd
Priority to CN201510399114.2A priority Critical patent/CN104941512B/en
Publication of CN104941512A publication Critical patent/CN104941512A/en
Application granted granted Critical
Publication of CN104941512B publication Critical patent/CN104941512B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums

Abstract

The invention relates to fertilizer production equipment, in particular to a reciprocating drum-type bio-organic fertilizer granulating machine. The reciprocating drum-type bio-organic fertilizer granulating machine comprises a support, an upper drum rotatably installed at the upper end of the support and a driving motor; a rail ring and gear rings are fixedly installed on the outer wall of the upper drum, the gear rings are in transmission connection with the driving motor through driving gears, and the rail ring is installed on a carrier roller in a rolling mode; an inner cavity of the upper drum is of a cone-shaped structure which is small in front end diameter and large in back end diameter, the back end of the upper drum is provided with a transferring hopper, the upper end of the transferring hopper is provided with an air hole, the lower end of the transferring hopper is provided with a discharging pipe, and the side wall of the transferring hopper is connected with the upper drum in a butt-joint mode; a lower drum is rotatably installed under the support, an inner cavity of the lower drum is of a cone-shaped structure which is large in front end diameter and small in back end diameter, and the back end of the lower drum is connected with the discharging pipe in a butt-joint mode. According to the reciprocating drum-type bio-organic fertilizer granulating machine, the structure is reasonable, the production efficiency is high, the processes of film coating, sieving and drying can be completed at one time, and meanwhile wall attachment materials can be removed without needing to stop the machine.

Description

Reciprocal drum-type microbial organic fertilizer pelleting machine
Technical field
The present invention relates to a kind of fertilizer production equipment, is a kind of back and forth drum-type microbial organic fertilizer pelleting machine specifically.
Background technology
In the production process of biological organic fertilizer; conventional roller pelletizer carries out granulation to biological organic fertilizer raw material; traditional roller pelletizer outer wall is provided with multiple circular orbit; wherein at least one track is rack rails; rotated by gears meshing head roll; at least two rail supported are on the reeded support wheel of band in addition, make cylinder keep balance.For making fertiliser granulates can be rolled to rear end from front end, also drum-inclined to be arranged, utilizing the gravity of material to make it move backward, the lateral force of cylinder will be increased like this, require higher to the moving component of back-up roller.The two ends of the cylinder that the feeding mouth of this roller pelletizer and discharging opening are arranged respectively, granulation process can only complete in the one way moving process of the inner chamber of cylinder.Owing to inevitably producing the powder of non-granulating in granulation process, so namely increase screening process load, increase again the transport of a lot of material, turnover work, cause that energy consumption is high, production efficiency is low.In addition, in actual use, because microbial organic fertilizer pelleting raw material humidity is large, be easy to be bonded on inner wall of rotary drum, if clear up not in time will be more poly-more for these knot wall materials, have a strong impact on granulation quality and balling ratio.If cleaning knot wall material time, must stop, frequent parking can affect again continuously, steady production requirement, reduction production efficiency.
Summary of the invention
The object of this invention is to provide a kind of rational in infrastructure, production efficiency is high, without the need to the reciprocal drum-type microbial organic fertilizer pelleting machine can clearing up knot wall material that stops.
For achieving the above object, the present invention is by the following technical solutions:
One of the present invention reciprocal drum-type microbial organic fertilizer pelleting machine comprises support, be rotatably installed in upper cylinder and the drive motors of pedestal upper end, the outer wall of described upper cylinder is installed with orbit ring and ring gear, described ring gear is in transmission connection by driven wheel and drive motors, described orbit ring rolls and is arranged on carrying roller, the inner chamber of described upper cylinder is that point diameter is little, the cone structure that rear end diameter is large, the rear end of upper cylinder is provided with passes on hopper, described upper end of passing on hopper is provided with air vent, lower end is provided with discharge nozzle, sidewall is to connecting cylinder, rotatably be provided with bottom roll in the below of support, the inner chamber of described bottom roll is the cone structure that point diameter is large, rear end diameter is little, and the rear end of bottom roll is docked with discharge nozzle.
Described side of passing on hopper is provided with the butt hole holding upper cylinder end, the rear end of described upper cylinder is rotatably inserted in butt hole, described discharge nozzle comprises reclaimed materials pipe and finished product material pipe, the recovery hopper that lower end is communicated with reclaimed materials pipe is provided with in what described reclaimed materials pipe was corresponding pass on hopper inner chamber, the finished product hopper that lower end is communicated with finished product material pipe is provided with in what described finished product material pipe was corresponding pass on hopper inner chamber, the upper end of described recovery hopper is with the screen cloth be obliquely installed, and described screen cloth is to the inclined upward of finished product hopper; Described bottom roll comprises the recovery cylinder of docking reclaimed materials pipe, the finished product cylinder of docking finished product material pipe, and be provided with shotcrete pipe in the inner chamber of described recovery cylinder, the front end of described finished product cylinder is provided with air drier.
The inwall of described upper cylinder is fixedly connected with inside lining sleeve, described inside lining sleeve is the cylinder-like structure be made up of flexible material, coaxially arranged with cylinder, the two ends of inside lining sleeve are fixedly connected on the two ends ring seal of upper cylinder respectively by annular seal band, the outer wall of inside lining sleeve is fixedly connected with axially extended positioning strip, many positioning strips are uniformly distributed around inside lining sleeve and are fixedly connected on the inwall of upper cylinder, on the barrel of inside lining sleeve, between adjacent two positioning strips, be fixedly connected with bar shaped balance weight iron.
Carrying roller is provided with the annular groove that cross section is U-shaped, described orbit ring is installed in the annular groove of carrying roller.
After adopting technique scheme, reciprocal drum-type microbial organic fertilizer pelleting machine of the present invention is rational in infrastructure, production efficiency is high, can once complete the operations such as coating, screening, oven dry, can clear up knot wall material without the need to stopping simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the section sectional structure schematic diagram of Fig. 1 embodiment.
Fig. 3 passes on the planar structure schematic diagram of hopper.
Fig. 4 is the section sectional structure schematic diagram of upper cylinder.
Fig. 5 is the partial enlargement structural representation of carrying roller and orbit ring.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1 and Figure 2; reciprocal drum-type microbial organic fertilizer pelleting machine of the present invention comprises support 1, is rotatably installed in upper cylinder 2 drive motors of support 1 upper end; the outer wall of described upper cylinder 2 is installed with orbit ring 3 and ring gear 4; described ring gear 4 is in transmission connection by driven wheel 5 and drive motors 6; described orbit ring 3 rolls and is arranged on carrying roller 31; as shown in Figure 5, described carrying roller 31 is provided with the annular groove that cross section is U-shaped, described orbit ring 3 is installed in the annular groove of carrying roller 31.
The inner chamber of described upper cylinder 2 is the cone structure that point diameter is little, rear end diameter is large, as long as ensure the minimum point of minimum point lower than front end of upper cylinder 2 rear end during installation, material can move to rear end from front end in the rolling, therefore, the cylinder of this taper need not tilt to install, as long as level is installed, during running, orbit ring 3 lateral force is little, is conducive to the service life extending bearing.
The rear end of upper cylinder 2 is provided with passes on hopper 8, described in pass on hopper 8 upper end is provided with air vent 81, lower end is provided with discharge nozzle 82, sidewall is to connecting cylinder 2; Rotatably be provided with bottom roll 7 in the below of support 1, the inner chamber of described bottom roll 7 is the cone structure that point diameter is large, rear end diameter is little, and the rear end of bottom roll 7 is docked with discharge nozzle 82.The material that in upper cylinder 2, coating completes enters from the rear end of upper cylinder 2 and passes on hopper 8, then enters bottom roll 7 by discharge nozzle 82, along with the rotation material of bottom roll 7 is carried again from back to front.
As shown in Figure 3, described side of passing on hopper 8 is provided with the butt hole 83 holding upper cylinder 2 end, the rear end of described upper cylinder 2 is rotatably inserted in butt hole 83, described discharge nozzle 82 comprises reclaimed materials pipe 82A and finished product material pipe 82B, the recovery hopper that lower end is communicated with reclaimed materials pipe 82A is provided with in what described reclaimed materials pipe 82A was corresponding pass on hopper 8 inner chamber, the finished product hopper that lower end is communicated with finished product material pipe 82B is provided with in what described finished product material pipe 82B was corresponding pass on hopper 8 inner chamber, the upper end of described recovery hopper is with the screen cloth 84 be obliquely installed, described screen cloth 84 is to the inclined upward of finished product hopper, described bottom roll 7 comprises the recovery cylinder 71 of docking reclaimed materials pipe 82A, the finished product cylinder 72 of docking finished product material pipe 82B, and be provided with shotcrete pipe in the inner chamber of described recovery cylinder 71, the front end of described finished product cylinder 72 is provided with air drier 73.The mixed material that upper cylinder 2 flows out enters and passes on the upper end of hopper 8, through the screening of screen cloth 84, fine particle and powder are dropped to by screen cloth 84 and reclaim in hopper, again through reclaiming hopper and reclaimed materials pipe 82A importing recovery cylinder 71, along with the rolling of reclaiming cylinder 71, receive the slurry of shotcrete pipe spray, roll coating again, finally exports from the front end of reclaiming cylinder 71.Sieve qualified particle through screen cloth 84 and entered finished product hopper by screen cloth 84 guiding, and import finished product cylinder 72 through finished product hopper and finished product material pipe 82B, along with the rolling of finished product cylinder 72, dried up by air drier 73, finally export from the front end of finished product cylinder 72.
As shown in Figure 4, the inwall of described upper cylinder 2 is fixedly connected with inside lining sleeve 21, described inside lining sleeve 21 be made up of flexible material, the cylinder-like structure that arrange coaxial with cylinder 2, the two ends of inside lining sleeve 21 are fixedly connected on the two ends ring seal of upper cylinder 2 respectively by annular seal band, the outer wall of inside lining sleeve 21 is fixedly connected with axially extended positioning strip 22, many positioning strips 22 are uniformly distributed around inside lining sleeve 21 and are fixedly connected on the inwall of upper cylinder 2, on the barrel of inside lining sleeve 21, between adjacent two positioning strips 22, be fixedly connected with bar shaped balance weight iron 23.Because inside lining sleeve 21 is made up of flexible material, and balance weight iron 23 is not connected with cylinder 2, and along with the rotation of cylinder 2, balance weight iron 23 drives inside lining sleeve barrel around to produce vibrations, the material sticked on barrel can be shaken off, play the effect preventing adhesion.

Claims (2)

1. reciprocal drum-type microbial organic fertilizer pelleting machine, comprise support (1), be rotatably installed in upper cylinder (2) and the drive motors of support (1) upper end, the outer wall of described upper cylinder (2) is installed with orbit ring (3) and ring gear (4), described ring gear (4) is in transmission connection by driven wheel (5) and drive motors (6), described orbit ring (3) rolls and is arranged on carrying roller (31), it is characterized in that: the inner chamber of described upper cylinder (2) is that point diameter is little, the cone structure that rear end diameter is large, the rear end of upper cylinder (2) is provided with passes on hopper (8), described upper end of passing on hopper (8) is provided with air vent (81), lower end is provided with discharge nozzle (82), sidewall is to connecting cylinder (2), rotatably be provided with bottom roll (7) in the below of support (1), the inner chamber of described bottom roll (7) is the cone structure that point diameter is large, rear end diameter is little, and the rear end of bottom roll (7) is docked with discharge nozzle (82).
2. reciprocal drum-type microbial organic fertilizer pelleting machine according to claim 1, it is characterized in that: described in pass on the side of hopper (8) and be provided with the butt hole (83) holding upper cylinder (2) end, the rear end of described upper cylinder (2) is rotatably inserted in butt hole (83), described discharge nozzle (82) comprises reclaimed materials pipe (82A) and finished product material pipe (82B), the recovery hopper that lower end is communicated with reclaimed materials pipe (82A) is provided with in what described reclaimed materials pipe (82A) was corresponding pass on hopper (8) inner chamber, the finished product hopper that lower end is communicated with finished product material pipe (82B) is provided with in what described finished product material pipe (82B) was corresponding pass on hopper (8) inner chamber, the upper end of described recovery hopper is with the screen cloth be obliquely installed (84), described screen cloth (84) is to the inclined upward of finished product hopper, described bottom roll (7) comprises the recovery cylinder (71) of docking reclaimed materials pipe (82A), the finished product cylinder (72) of docking finished product material pipe (82B), be provided with shotcrete pipe in the inner chamber of described recovery cylinder (71), the front end of described finished product cylinder (72) is provided with air drier (73).
CN201510399114.2A 2015-07-09 2015-07-09 Reciprocal drum-type microbial organic fertilizer pelleting machine Active CN104941512B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510399114.2A CN104941512B (en) 2015-07-09 2015-07-09 Reciprocal drum-type microbial organic fertilizer pelleting machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510399114.2A CN104941512B (en) 2015-07-09 2015-07-09 Reciprocal drum-type microbial organic fertilizer pelleting machine
CN201710366569.3A CN107042081B (en) 2015-07-09 2015-07-09 Drum-type bio-organic fertilizer granulator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN201710366569.3A Division CN107042081B (en) 2015-07-09 2015-07-09 Drum-type bio-organic fertilizer granulator

Publications (2)

Publication Number Publication Date
CN104941512A true CN104941512A (en) 2015-09-30
CN104941512B CN104941512B (en) 2017-07-07

Family

ID=54156895

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201710366569.3A Active CN107042081B (en) 2015-07-09 2015-07-09 Drum-type bio-organic fertilizer granulator
CN201510399114.2A Active CN104941512B (en) 2015-07-09 2015-07-09 Reciprocal drum-type microbial organic fertilizer pelleting machine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201710366569.3A Active CN107042081B (en) 2015-07-09 2015-07-09 Drum-type bio-organic fertilizer granulator

Country Status (1)

Country Link
CN (2) CN107042081B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045723A (en) * 2016-08-10 2016-10-26 广州薪光合环保技术有限公司 Fertilizer coating device
CN106902706A (en) * 2017-04-07 2017-06-30 习水县和平有机肥业有限公司 For the device of organic fertilizer production
CN107519816A (en) * 2017-09-09 2017-12-29 安徽瑞虎肥业有限公司 A kind of composite heat transfer drum granulating machine
CN110436152A (en) * 2019-09-03 2019-11-12 徐州工业职业技术学院 A kind of electric automatization blanking device
CN110694548A (en) * 2019-11-05 2020-01-17 洛阳双瑞特种合金材料有限公司 Granulation device for non-smelting welding flux

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1025061A (en) * 1963-01-17 1966-04-06 Chemical & Ind Corp Apparatus for making spherical pellets of water soluble substances and method of operation
CN2395792Y (en) * 1998-12-08 2000-09-13 董安城 Multifunctional equipment for producing ball-shaped granules
WO2004096426A1 (en) * 2003-04-30 2004-11-11 Research & Design Institute Of Urea And Organic Synthesis Products, Joint Stock Company (Oao Niic) Drum granulator
RU2436754C1 (en) * 2010-06-16 2011-12-20 Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) Method of producing granular carbamide
CN203212496U (en) * 2013-04-14 2013-09-25 天津博生源肥料科技发展有限公司 Pelletizer for producing controlled-release resin coated fertilizer
CN204017787U (en) * 2014-08-22 2014-12-17 临沭县宇博机械配件有限公司 For the slurry-spraying pelletizing machine that ecological organic fertilier is produced
CN204752556U (en) * 2015-07-09 2015-11-11 山东华屹重工有限公司 Bio - organic fertilizer apparatus for producing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB711102A (en) * 1951-07-04 1954-06-23 Reymersholms Gamla Ind Ab Improvements relating to the pelletizing of material
CN101863100A (en) * 2009-04-20 2010-10-20 上海冠生园食品有限公司 Molding device of edible packaging film
CN202849278U (en) * 2012-09-03 2013-04-03 宁波致富宝生物科技有限公司 Rotary drum for producing chemical fertilizer
CN203183972U (en) * 2013-03-31 2013-09-11 山东金山化肥有限公司 Pelletizer for production of nitryl and sulfenyl compound fertilizer
CN203281281U (en) * 2013-06-17 2013-11-13 鄂州飞亚利废有限责任公司 Granulating device
CN103933896B (en) * 2014-04-26 2016-02-03 绍兴仁飞炭黑有限公司 The drying-granulating device of a kind of carbon black or high moisture content powder
CN204022696U (en) * 2014-08-22 2014-12-17 临沭县宇博机械配件有限公司 A kind of ecological organic fertilizer is produced and is used microorganism coating machine
CN104209057A (en) * 2014-09-01 2014-12-17 无锡市华牧机械有限公司 Cam type packing auger granulation machine
CN204320651U (en) * 2014-11-17 2015-05-13 成都彼斯特生物科技有限公司 For the Multilayer screening apparatus of sponging granulator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1025061A (en) * 1963-01-17 1966-04-06 Chemical & Ind Corp Apparatus for making spherical pellets of water soluble substances and method of operation
CN2395792Y (en) * 1998-12-08 2000-09-13 董安城 Multifunctional equipment for producing ball-shaped granules
WO2004096426A1 (en) * 2003-04-30 2004-11-11 Research & Design Institute Of Urea And Organic Synthesis Products, Joint Stock Company (Oao Niic) Drum granulator
RU2436754C1 (en) * 2010-06-16 2011-12-20 Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) Method of producing granular carbamide
CN203212496U (en) * 2013-04-14 2013-09-25 天津博生源肥料科技发展有限公司 Pelletizer for producing controlled-release resin coated fertilizer
CN204017787U (en) * 2014-08-22 2014-12-17 临沭县宇博机械配件有限公司 For the slurry-spraying pelletizing machine that ecological organic fertilier is produced
CN204752556U (en) * 2015-07-09 2015-11-11 山东华屹重工有限公司 Bio - organic fertilizer apparatus for producing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
化工部化肥司: "《农化服务手册》", 30 September 1993, 化学工业出版社 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045723A (en) * 2016-08-10 2016-10-26 广州薪光合环保技术有限公司 Fertilizer coating device
CN106902706A (en) * 2017-04-07 2017-06-30 习水县和平有机肥业有限公司 For the device of organic fertilizer production
CN106902706B (en) * 2017-04-07 2019-04-30 习水县和平有机肥业有限公司 Device for organic fertilizer production
CN107519816A (en) * 2017-09-09 2017-12-29 安徽瑞虎肥业有限公司 A kind of composite heat transfer drum granulating machine
CN110436152A (en) * 2019-09-03 2019-11-12 徐州工业职业技术学院 A kind of electric automatization blanking device
CN110694548A (en) * 2019-11-05 2020-01-17 洛阳双瑞特种合金材料有限公司 Granulation device for non-smelting welding flux
CN110694548B (en) * 2019-11-05 2022-03-11 中国船舶重工集团公司第七二五研究所 Granulation device for non-smelting welding flux

Also Published As

Publication number Publication date
CN107042081A (en) 2017-08-15
CN104941512B (en) 2017-07-07
CN107042081B (en) 2021-01-08

Similar Documents

Publication Publication Date Title
CN104941512A (en) Reciprocating drum-type bio-organic fertilizer granulating machine
CN201702686U (en) Full-automatic steel pipe inner wall shot blasting cleaning machine
CN204787658U (en) Production of microorganism bacterial manure is with low temperature drying machine
CN202212339U (en) Roller sand sieving machine
CN203196693U (en) Total radial discharging ball mill
CN203955341U (en) Cleaning screen subset
CN203862325U (en) Vertical type centrifugal mill
CN104034134A (en) Rotary drum dryer internally provided with screen cloth
CN204752556U (en) Bio - organic fertilizer apparatus for producing
CN104888951B (en) High-efficiency drum type magnetic separator
CN204854211U (en) Granule bio - organic fertilizer backward flow formula cryodrying machine
CN207770259U (en) A kind of efficient sieving equipment for producing powdered oil
CN105032288A (en) Functional soil repairing agent production device
CN204768560U (en) Agent apparatus for producing is restoreed to functional soil
CN204981686U (en) Coating machine is used in biological organic inorganic fertile production of prevention and control vegetables plant diseases and insect pests type
CN105043047A (en) Reverse-flow type low-temperature drying machine for particle bio-organic fertilizer
CN105032589A (en) Automatic feeding system of grinding mill
CN204620193U (en) A kind of have the cylinder magnetic separator roughly selecting, scan function
CN104961589B (en) Rice weeding special bio bacterial manure production coating machine
CN107469924A (en) A kind of sieving approach device for surface mining
CN204017787U (en) For the slurry-spraying pelletizing machine that ecological organic fertilier is produced
CN103449912B (en) A kind of slowly/controlled releasing fertilizer synchronous mode photocuring coating cylinder
CN204752557U (en) Fertile apparatus for producing of diolame controlled release
CN204620192U (en) A kind of high efficiency cylinder magnetic separator
CN204737895U (en) Production of functional fertilizer is used medicine to fertilize and is wrapped up machine

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant