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CN109396042B - Broken particle sorting device and method for lithium ion batteries - Google Patents

Broken particle sorting device and method for lithium ion batteries Download PDF

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Publication number
CN109396042B
CN109396042B CN201811562445.3A CN201811562445A CN109396042B CN 109396042 B CN109396042 B CN 109396042B CN 201811562445 A CN201811562445 A CN 201811562445A CN 109396042 B CN109396042 B CN 109396042B
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China
Prior art keywords
air inlet
fixed
particles
lithium ion
middle cylinder
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CN201811562445.3A
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Chinese (zh)
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CN109396042A (en
Inventor
李亚辉
孙万兴
金光龙
岳明权
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Jilin Tieyang Shengri Cycle Technology Co ltd
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Jilin Tieyang Shengri Cycle Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/54Reclaiming serviceable parts of waste accumulators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/84Recycling of batteries or fuel cells

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

The invention discloses a broken particle sorting device of a lithium ion battery, which comprises a working cavity, wherein the working cavity comprises a powder discharging pipe, a first funnel part fixedly connected with the powder discharging pipe, a middle cylinder part fixedly connected with the first funnel part, a second funnel part fixedly connected with the middle cylinder part and an overweight discharging pipe fixedly connected with the second funnel part, a plurality of feeding pipes are fixed on the outer wall of the first funnel part, a plurality of second filter screens are fixed in the middle cylinder part, a plurality of air inlet holes are formed in the middle cylinder part in an annular manner, an air inlet mechanism is fixed in the air inlet holes, and a plurality of discharging pipes are fixed in the outer wall of the middle cylinder part corresponding to the discharging end position of the screen surface of the second filter screen in an annular manner; the sorting device provided by the invention has the advantages of simple structure and convenience in operation, and can also improve the sorting efficiency of broken particles of the lithium battery.

Description

Broken particle sorting device and method for lithium ion batteries
Technical Field
The invention relates to the field of mechanical automation, in particular to a sorting method and a sorting device for broken particles of lithium ion batteries and a sorting method thereof.
Background
With the rapid development of new energy automobiles and lithium ion power batteries, waste batteries are generated in large quantities. In the process of treating waste batteries by a physical method, the batteries are firstly crushed by using equipment, and then the main components such as copper, aluminum and the like, graphite and plastics are separated. In the batch recovery treatment process, high requirements are placed on separation efficiency, separation material purity, energy consumption, dust and gas diffusion. In application number 200920314152.3, a metal plastic sorting device is a similar technology, and a method and a device for analyzing metal particles and plastic particles according to different densities are also mentioned, wherein the technology mainly aims at waste wires and electric products to sort metal particles, nonmetal particles and powder, and air flow is adopted to sort rubber particles in the technology of grant publication number CN 2657800Y.
Drawbacks of the prior art solutions:
(1) The separation efficiency is low: the broken lithium battery particles have complex metal components, nonmetal such as graphite is in powder shape and has strong adhesiveness, and in addition, a small amount of harmful gas is also contained, so that various components of the metal particles are difficult to separate by adopting the prior art, and nonmetal powder attached to the metal particles is difficult to clean, so that the purity of metal sorting matters is not high;
(2) The structure is complex, and automatic control is difficult to realize;
(3) High energy consumption and high noise: generally, a high-power motor is used as power, the motor is always in a full-load running state in the sorting process, and the working mechanism always keeps a rotating or reciprocating working state.
Disclosure of Invention
The invention aims to provide a sorting device for broken particles of a lithium ion battery, which solves the problems in the prior art, has a simple structure, is simple and convenient to operate, and can improve the sorting efficiency of the broken particles of the lithium ion battery.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a broken particle sorting device of a lithium ion battery, which comprises a working cavity, wherein the working cavity comprises a powder discharging pipe, a first funnel part, a middle cylinder part, a second funnel part and an overweight discharging pipe, the powder discharging pipe is fixedly connected to the first funnel part, the first funnel part is fixedly connected to the middle cylinder part, the middle cylinder part is fixedly connected to the second funnel part, the second funnel part is fixedly connected to the overweight discharging pipe, a plurality of feeding pipes are fixed on the outer wall of the first funnel part, a plurality of second filter screens are fixed in the middle cylinder part, a plurality of air inlet holes are annularly formed in the middle cylinder part, an air inlet mechanism is fixed in the air inlet holes, the air inlet mechanism comprises a support base, a middle shaft fixed in the middle of the support base, a cylinder sleeved outside the middle shaft and a plurality of arc blades fixed on the cylinder, first baffles are fixedly connected to the arc blades, the areas between the adjacent first baffles are different, the fixing angles between the adjacent first baffles are different, a plurality of air inlet holes are formed in the middle cylinder part, a plurality of air inlet grooves are formed in the middle cylinder part, a plurality of air inlet holes are formed in the middle cylinder part, and are matched with a plurality of air inlet holes are formed in the upper detection assembly, and the upper end of the middle cylinder is fixedly arranged on the outer wall, and the upper end of the discharge pipe is fixedly matched with the lower end.
Preferably, the area difference between adjacent first baffles is 1.5-2 times.
Preferably, the angle difference between adjacent first baffles is 5 ° -10 °.
Preferably, the screen surface of the second filter screen is a curved surface, a plurality of protruding parts are annularly fixed on the screen surface of the second filter screen, and a second baffle is fixedly arranged on the protruding parts.
Preferably, the fixed angles between adjacent second baffles are different.
Preferably, the number of the air inlet holes is 12-24.
There is also provided a sorting method using the sorting apparatus for broken particles of lithium ion battery of claim 1, the steps of the sorting method for broken particles of lithium battery comprising:
a. firstly, primary broken lithium battery particles are put into the working cavity through a feed inlet of the feed pipe;
b. starting a blower to ventilate the air inlet hole, and starting the arc-shaped blades of the air inlet mechanism to rotate to form spiral upward wind in the working cavity;
c. setting or adjusting the wind speed of an air inlet mechanism, sequentially sorting sorted lithium battery broken particles on the screen surface of the second filter screen according to the required sequence, and discharging the sorted lithium battery broken particles on the screen surface of the second filter screen out of the working cavity through the discharge port of the discharge pipe;
d. and after the sorted lithium battery broken particles are sorted according to the required sequence, finally discharging the overweight lithium battery broken particles through a discharge hole of the overweight discharge pipe.
Preferably, the upward wind speed of the spiral generated by each air inlet mechanism is the same as the gravity of the crushed particles to be sorted.
Preferably, the fixed installation direction of the second baffle plate on the screen surface of the second filter screen is the same as the wind direction of spiral upwind generated by the air inlet mechanism corresponding to the second filter screen.
The invention discloses the following technical effects: the sorting device provided by the invention has the advantages that the structure is simple, the operation is simple and convenient, the sorting device is used for providing spiral upward wind by adopting the air inlet mechanism, the crushed particles of the selected lithium batteries are sorted step by step according to the requirement, and the sorting efficiency is high by being matched with the second filter screen structure with the curved surface, so that the sorting is more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a sorting apparatus according to the present invention;
FIG. 2 is an enlarged view of part of the portion C of FIG. 1;
FIG. 3 is a schematic view of a part of the exhaust mechanism in the present invention;
FIG. 4 is a schematic view of a second filter screen according to the present invention;
FIG. 5 is a schematic view of the structure of the fixed installation of the support base of the exhaust mechanism in the present invention;
wherein, 1-a powder discharging pipe; 2-a first funnel portion; 3-an intermediate cylindrical portion; 4-a second funnel portion; 5-an overweight material discharging pipe; 6-a first filter screen; 7-feeding pipe; 8-a second filter screen; 9-an air inlet mechanism; 10-a discharging pipe; 11-an air inlet hole; 12-a detection assembly; 13-a support base; 14-an intermediate shaft; 15-a cylinder; 16-arc-shaped blades; 17-a first baffle; 18-a protrusion; 19-a second baffle; 20-grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to the accompanying drawings 1-5, the invention provides a broken particle sorting device of a lithium ion battery, which comprises a working cavity, wherein the working cavity comprises a powder discharging pipe 1, a first funnel part 2, a middle cylinder part 3, a second funnel part 4 and an overweight discharging pipe 5, the powder discharging pipe 1 is fixedly connected to the first funnel part 2, when an air inlet mechanism 9 ventilates, negative pressure is generated in the working cavity, dust and gas are discharged from a discharge hole of the powder discharging pipe 1, but large particles are prevented from being discharged upwards, and a first filter screen 6 is fixed on the inner wall of the top of the first funnel part 2 below the powder discharging pipe 1, so that the discharge of the large-particle lithium battery from the powder discharging pipe 1 can be well blocked; the first funnel part 2 is fixedly connected to the middle cylinder part 3, the middle cylinder part 3 is fixedly connected to the second funnel part 4, the second funnel part 4 is fixedly connected to the overweight material discharging pipe 5, a plurality of feeding pipes 7 are fixed on the outer wall of the first funnel part 2, a plurality of second filtering screens 8 are fixed in the middle cylinder part 3, and broken particles of lithium batteries with different components can be separated in a grading manner, so that separation efficiency is high, and separation is accurate; a plurality of air inlet holes 11 are annularly formed in the middle cylinder part 3, an air inlet mechanism 9 is fixed in the air inlet holes 11, the air inlet mechanism 9 comprises a support base 13, a middle shaft 14 fixed in the middle of the support base 13, a cylinder 15 sleeved outside the middle shaft 14, and a plurality of arc blades 16 annularly fixed on the cylinder 15, first baffle plates 17 are fixed on the arc blades 16, areas between adjacent first baffle plates 17 are different, fixing angles between the adjacent first baffle plates 17 are different, spiral upward wind can be provided, and the direction can be changed; the inner wall of the air inlet hole 11 is provided with the groove 20, and the groove 20 is in clearance fit with the support base 13, so that the air inlet mechanism 9 is more stable, and the phenomenon of falling off is not easy to occur when the wind speed is increased; wherein a plurality of discharging pipes 10 are fixed to annular on the middle drum part 3 outer wall, and the inside feed end of discharging pipe 10 is in second filter screen 8 lower extreme to make things convenient for the broken granule of lithium cell on the sifter to discharge from the discharge end of discharging pipe 10, install detection component 12 in the below of discharging pipe 10 feed end, wherein detection component 12 is the sensor preferably for detect the composition of selection thing, make the selection more accurate.
Further optimizing scheme, in order to make the wind direction change of wind generated by the wind inlet mechanism 9 more flexible, the area difference between adjacent first baffles 17 is set to be 1.5-2 times, and the angle difference between adjacent first baffles 17 is set to be 5-10 DEG
According to the further optimization scheme, the screen surface of the second filter screen 8 is a curved surface, so that the sorted target particles can all fall on the screen surface of the second filter screen 8, and other particles to be selected can smoothly pass through for the next screening; a plurality of protruding parts 18 are annularly fixed on the screen surface of the second filter screen 8, a second baffle 19 is fixedly arranged on the protruding parts 18, and a plurality of protruding parts 18 are annularly arranged on the screen surface of the second filter screen 8, so that scattered particles to be sorted can accurately fall on the screen surface, can pass through the protruding parts 18 at the same time, and finally are discharged from a discharge hole of the discharge pipe 10, so that sorting efficiency is high, and sorting is more accurate; the fixed angles between the adjacent second baffles 19 are different, broken particles falling from the feed pipe 7 fall downwards, and when the air inlet mechanism 9 ventilates, selected particles fall onto the screen surface of the second filter screen 8, when the particles fall downwards, the wind direction blown into the screen surface is changed due to the different angles of the second baffles 19 on the screen surface of the second filter screen 8, and meanwhile, the selected particles can accurately fall onto the screen surface of the second filter screen 8, and then are discharged from the discharge hole of the discharge pipe 10.
Further optimizing the solution, in order to make the second filter screen 8 perform better in sorting, so that the sorting efficiency is higher, the angle between the second filter screen 8 and the intermediate cylindrical portion 3 is 30 ° -60 °, preferably 45 °.
In a further preferred embodiment, the wall thickness of the working chamber is set to 3-5cm for better fixation of the air exhaust mechanism 9.
The invention further provides a sorting method for the broken particles of the lithium ion battery based on the sorting device for the broken particles of the lithium ion battery, which is characterized in that firstly, the primarily broken particles of the lithium ion battery are thrown into a working cavity through a feed inlet of a feed pipe 7; then, starting a blower to ventilate the air inlet hole 11, and after the air inlet hole 11 ventilates, starting the arc-shaped blades 16 of the air inlet mechanism 9 to rotate, so that the blown air is spirally upward, and when the arc-shaped blades 16 rotate, the first baffle 17 on the arc-shaped blades 16 can change the wind direction of the air introduced by the air inlet mechanism 9, so that the purpose of sorting broken particles of the lithium battery step by step is realized; the sorted lithium battery broken particles are sequentially sorted on the screen surface of the second filter screen 8 according to the required sequence, the lithium battery broken particles sorted on the screen surface of the second filter screen 8 are discharged out of the working cavity through the discharge port of the discharge pipe 10, and after the sorted lithium battery broken particles are sorted according to the required sequence, the overweight lithium battery particles are finally discharged through the discharge port of the overweight discharge pipe 5.
According to a further optimization scheme, the wind speed of wind generated by each air inlet mechanism 9 is the same as the gravity of the separated broken particles, so that the broken particles of the lithium battery can be separated layer by layer, the separated particles of each layer are different in substance, the separated broken particles are scattered on the screen surface of the second filter screen 8 and are discharged through the discharging pipe 10, and the broken particles to be separated fall on the next separation procedure from the middle of the second filter screen 8.
In order to ensure that the sorting accuracy of the lithium battery broken particles is high, the sorted lithium battery broken particles can be scattered on the screen surface of the corresponding second filter screen 8, and finally discharged through the discharge hole of the discharge pipe 10, the fixed installation direction of the second baffle plate 19 on the screen surface of the second filter screen 8 and the wind direction of spiral upwind generated by the air inlet mechanism 9 corresponding to the second filter screen 8 are set to be the same.
The sorting device has the advantages of simple structure, simple and convenient operation, automatic control, low energy consumption and low cost; according to the sorting device, the air inlet mechanism 9 is adopted to provide spiral upward air, the crushed particles of the selected lithium batteries are sorted step by step according to the requirement, and the structure of the curved second filter screen 8 is matched, the screen surface of the curved second filter screen 8 is annularly provided with the plurality of protruding parts 18, so that scattered particles to be sorted can not only accurately fall on the screen surface, but also pass through the protruding parts 18, and finally are discharged from the discharge hole of the discharge pipe 10, the sorting efficiency is high, and the sorting is more accurate.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims (7)

1. The utility model provides a broken granule sorting unit of lithium ion battery which characterized in that: comprises a working cavity, the working cavity comprises a powder discharging pipe (1), a first funnel part (2), a middle cylinder part (3), a second funnel part (4) and an overweight discharging pipe (5), the powder discharging pipe (1) is fixedly connected to the first funnel part (2), the first funnel part (2) is fixedly connected to the middle cylinder part (3), the middle cylinder part (3) is fixedly connected to the second funnel part (4), the second funnel part (4) is fixedly connected to the overweight discharging pipe (5), a plurality of feeding pipes (7) are fixed to the outer wall of the first funnel part (2), a plurality of second filtering screens (8) are fixed to the inner wall of the middle cylinder part (3), a plurality of air inlet holes (11) are annularly formed in the middle cylinder part (3), an air inlet mechanism (9) is fixed to the inner side of the air inlet holes (11), the air inlet mechanism (9) comprises a supporting base (13), a middle shaft (14) fixedly connected to the supporting base (13), a plurality of blades (16) are fixedly connected to the middle shaft (14) and a plurality of blades (16) are sleeved on the outer wall of the middle cylinder part (3), a plurality of blades (17) are not sleeved with a plurality of blades (17) and are fixedly connected to one another, the fixed angles between the adjacent first baffles (17) are different, grooves (20) are formed in the inner wall of the air inlet hole (11), the grooves (20) are in clearance fit with the supporting base (13), a plurality of discharging pipes (10) are annularly fixed on the outer wall of the middle cylinder part (3), a detection assembly (12) is arranged on the inner wall below the feeding end of each discharging pipe (10), and the area difference between the adjacent first baffles (17) is 1.5-2 times; the screening surface of the second filter screen (8) is a curved surface, a plurality of protruding parts (18) are annularly fixed on the screening surface of the second filter screen (8), and a second baffle (19) is fixed on the protruding parts (18).
2. The lithium ion battery crushed particle sorting apparatus according to claim 1, wherein: the angle difference between the adjacent first baffles (17) is 5-10 degrees.
3. The lithium ion battery crushed particle sorting apparatus according to claim 1, wherein: the fixed angles between adjacent second baffles (19) are different.
4. The lithium ion battery crushed particle sorting apparatus according to claim 1, wherein: the number of the air inlet holes (11) is 12-24.
5. A method for sorting broken particles of lithium ion batteries, characterized in that the device for sorting broken particles of lithium ion batteries according to any one of claims 1 to 4 is used, comprising the steps of:
a. firstly, primary broken lithium battery particles are put into a working cavity through a feed inlet of a feed pipe (7);
b. starting a blower to ventilate into the air inlet hole (11), and starting to rotate the arc-shaped blades (16) of the air inlet mechanism (9) to form spiral upward wind in the working cavity;
c. setting or adjusting the wind speed of an air inlet mechanism (9), sequentially sorting sorted lithium battery broken particles on the screen surface of a second filter screen (8) according to the required sequence, and discharging the sorted lithium battery broken particles on the screen surface of the second filter screen (8) to the outside of a working cavity through a discharge port of a discharge pipe (10);
d. and after the sorted lithium battery crushed particles are sorted according to the required sequence, finally discharging the overweight lithium battery crushed particles through a discharge hole of an overweight material discharge pipe (5).
6. The method for sorting broken particles of a lithium ion battery according to claim 5, wherein: the wind speed of spiral upwind generated by each air inlet mechanism (9) is the same as the gravity of the separated broken particles.
7. The method for sorting broken particles of a lithium ion battery according to claim 5, wherein: the fixed installation direction of the second baffle plate (19) on the screen surface of the second filter screen (8) is the same as the wind direction of spiral upwind generated by the air inlet mechanism (9) corresponding to the second filter screen (8).
CN201811562445.3A 2018-12-19 2018-12-19 Broken particle sorting device and method for lithium ion batteries Active CN109396042B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110918459A (en) * 2019-12-13 2020-03-27 周文杰 Waste lithium battery sorting device capable of automatically adjusting air flow based on coanda effect
CN114870974A (en) * 2022-04-29 2022-08-09 中铁华源(成都)环保科技有限公司 Coating raw material crushing device

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US4470902A (en) * 1981-09-05 1984-09-11 Nobuo Yoshimori Method and apparatus for classifying particles
CN86104947A (en) * 1986-08-06 1987-07-22 唐平科 Rectangular vane-type vertical shaft wind mill
CN201168700Y (en) * 2008-03-20 2008-12-24 中国石油化工股份有限公司 Centrifugal type airflow classifier
CN101446265A (en) * 2008-12-18 2009-06-03 上海交通大学 Refraction wind-guiding type fan blade system
CN202238667U (en) * 2011-10-13 2012-05-30 上海凯盛节能工程技术有限公司 Angle-adjustable guide vane device
CN102921635A (en) * 2012-10-26 2013-02-13 安徽理工大学 Screw air elutriation fine-coal remover for dry classification before fine coal preparation
CN204253278U (en) * 2014-11-03 2015-04-08 西南科技大学 A kind of S type wind energy conversion system based on variable pitch control principle
CN204564285U (en) * 2014-12-04 2015-08-19 嘉善申嘉科技有限公司 Powder screening system
CN209439011U (en) * 2018-12-19 2019-09-27 吉林铁阳盛日循环科技有限公司 A kind of lithium ion battery crushed particles sorting unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1090578A (en) * 1964-09-18 1967-11-08 Rheinische Kalksteinwerke Wind sifter
US4470902A (en) * 1981-09-05 1984-09-11 Nobuo Yoshimori Method and apparatus for classifying particles
CN86104947A (en) * 1986-08-06 1987-07-22 唐平科 Rectangular vane-type vertical shaft wind mill
CN201168700Y (en) * 2008-03-20 2008-12-24 中国石油化工股份有限公司 Centrifugal type airflow classifier
CN101446265A (en) * 2008-12-18 2009-06-03 上海交通大学 Refraction wind-guiding type fan blade system
CN202238667U (en) * 2011-10-13 2012-05-30 上海凯盛节能工程技术有限公司 Angle-adjustable guide vane device
CN102921635A (en) * 2012-10-26 2013-02-13 安徽理工大学 Screw air elutriation fine-coal remover for dry classification before fine coal preparation
CN204253278U (en) * 2014-11-03 2015-04-08 西南科技大学 A kind of S type wind energy conversion system based on variable pitch control principle
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