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EP0126177B1 - Vorrichtung zum Sortieren von körnigem Material, insbesondere für Mühlen - Google Patents

Vorrichtung zum Sortieren von körnigem Material, insbesondere für Mühlen Download PDF

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Publication number
EP0126177B1
EP0126177B1 EP83106679A EP83106679A EP0126177B1 EP 0126177 B1 EP0126177 B1 EP 0126177B1 EP 83106679 A EP83106679 A EP 83106679A EP 83106679 A EP83106679 A EP 83106679A EP 0126177 B1 EP0126177 B1 EP 0126177B1
Authority
EP
European Patent Office
Prior art keywords
screening
containers
product
container
casing
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
Application number
EP83106679A
Other languages
English (en)
French (fr)
Other versions
EP0126177A3 (en
EP0126177A2 (de
Inventor
Adriano Barbieri
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 AT83106679T priority Critical patent/ATE33769T1/de
Publication of EP0126177A2 publication Critical patent/EP0126177A2/de
Publication of EP0126177A3 publication Critical patent/EP0126177A3/en
Application granted granted Critical
Publication of EP0126177B1 publication Critical patent/EP0126177B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/52—Cleaning with brushes or scrapers
    • B07B1/522—Cleaning with brushes or scrapers with brushes
    • B07B1/524—Cleaning with brushes or scrapers with brushes the brushes being rotating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/08—Cleaning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/06—Selective separation of solid materials carried by, or dispersed in, gas currents by impingement against sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Definitions

  • This invention relates to an apparatus for sorting granulated products particularly in the mill grinding field according to the first part of claim 1.
  • Such products are, for example, incoherent loose products, and in particular flour products from break-up equipment.
  • sifters which comprise essentially a hollow cylinder having its wall perforated with holes of a desired size for product screening, and plansifters comprising freely oscillating flat sifters.
  • DE-A-3 138 430 is an apparatus for sorting granulated products which include a forced air circulation.
  • the forced air circulation is created by a suction device and a device for generating a pressurized air flow, and defines at a screening layer, a forced flow of air mixed with the product being treated.
  • an aim of the present invention is to provide an apparatus for sorting granular products which is not susceptible to clogging of the screening member, even when granulated products have to be sorted which contain substances which are difficult to remove.
  • an object of the invention is to provide an apparatus for sorting granulated products which can be easily serially combined together with similar apparatuses to fulfill special sorting application requirements.
  • Another object of the invention is to provide an apparatus for sorting granular products, wherein the screening layers are fully utilized and the formation of "dead pockets" is thus avoided.
  • a further object of the invention is to provide an apparatus for sorting granular products which has a greatly reduced bulk.
  • Yet another object of the invention is to provide an apparatus for sorting granular products which is very easy to clean, even upon the screening member becoming contaminated by substances which are difficult to remove.
  • a further object of this invention is to provide an apparatus which can solve the technical problem of a reduction of the moving members for sorting granulated products in general.
  • An even further object of the invention is to provide such an apparatus which is specially versatile, in that it may be constructed in a number of versions to meet varying applicational requirements.
  • a not least object of the invention is to provide such an apparatus which is quite simple construction-wise and can be readily formed from commercially available elements and materials, as well as being highly competitive from a purely economical standpoint.
  • a further object of this invention is to provide particular embodiments of the apparatus which are advantageous per se and lead to technical advance, and embodiments which, while using moving parts of greatly reduced mass, can achieve important results even in the presence of such contaminants as paper or the like.
  • the embodiment of the invention is generally designated with the reference numeral 101 and comprises essentially a casing 102 wherein is mounted a screening member 103 including one, and preferably several substantially cylindrical containers 104a, 104b, 104c, inserted coaxially within one another and having walls 105a, 105b, 105c, respectively, which are partially pervious to the flow of air and granulated material fed thereto bordering corresponding retaining chambers.
  • the means for feeding air and material to the screening member comprise feeder members 106 of conventional design and provided, for example with a fan 107 the delivery pipe 108 whereof is connected to a feeder device 109, e.g. of the spider valve type, and, after passing through the casing 102 in sealed relationship therewith, opens to the interior of the first container 104a.
  • a feeder device 109 e.g. of the spider valve type
  • the processing chambers are thus separated from the cylindrical containers whose walls define the screening layers, thereby a first chamber half will coincide with the second chamber half of the container directly inside it.
  • the containers 104a, 104b, 104c cooperate with a rotary drive 110, e.g. a gear motor, optionally driving each container at a different angular velocity, such as through the use of a gear motor having several coaxial shafts acting each on one of the cited cylindrical containers and being connected to the motor at different drive ratios.
  • a gear motor having several coaxial shafts acting each on one of the cited cylindrical containers and being connected to the motor at different drive ratios.
  • the casing 102 is provided with an access door 111 for optionally cleaning the cylindrical containers manually, which are open at the door side end for optional emptying thereof.
  • discharge ducts which constitute the discharging means for the screened and/or non-screened materials, respectively indicated at 112a, 112b, 112c along which valving means 113a, 113b, 113c are inserted, e.g. as comprising spider valves of the same type as previously indicated at 109.
  • the door(s) 111 can be opened at the casing to make for easier inspection of the screening member, and in a preferred embodiment, wiping members 115 are mounted on the latter which comprise, as an example, for all these cylindrical containers which are inserted coaxially within at least another, brushes 116a and 116b which are mounted on the external surfaces of the corresponding containers 104a and 104b in a helical or auger-like arrangement and act on the internal surface of the directly adjacent container where- into the former is inserted.
  • An additional helical brush 116c is mounted inside the cylinder 104a so as to produce a relative movement between the cited cylinder and brush 116c, e.g. by mounting it onto an open support, not shown and connected to a shaft of the gear motor.
  • a second wiping member acting on the screening surface 105c may be formed, for example, from a bank of stationary brushes 117 carried on the interior of the casing 102 and acting on the external surface of the screening cylinder 105c.
  • One possible alternative contemplates the use of perforated tubes, not shown, which are effective to direct compressed air jets onto the screening surface of the cylinder 105c.
  • each cylinder be rotated at a different speed from the cylinders directly adjacent it.
  • the fan 107 is located upstream of the material infeed by way of example only, as the same machine operation may be implemented by connecting the fan 107 suction side to an inlet duct 120 of the casing 102 wherethrough air and product of a sufficiently fine grain size are flown to pass through the screening surfaces of the member 103, to trigger vacuum operation of the apparatus.
  • the screening surfaces of the various containers are shaped to hold back material in decreasing grain size from the innermost container 104a to the outermost container 104c.
  • the product to be screened is introduced into the container 104a of the sorting machine as fed in by the feeding members 106 such that a mixture of pressurized air and product to be screened is conducted to the interior of the cited container.
  • the containers are rotatively driven by the gear motor 110 preferably at different speeds from one another such that the brushes 116a, 116b, 116c can effect, in wiping the screening surfaces clean, the discharge of the product which has not been moved through the respective containers via the ducts 112, which are regulated by the valving members 113, said residual product being conveyed toward the cited ducts owing to their motion relatively to the walls on which they act as well as to their auger-like shape.
  • the product is passed through the first screening surface 105a to only deposit inside the first container that coarse grain size material which is either picked up by occasionally opening the door 111 or discharged through the ducts 112a, 112b, 112c by the combined rotary motion of the brushes and cylinders and owing to the air thrust, since the duct 108 will preferably extend over a significant distance through the container 104a and create a labyrinth passageway.
  • the product leaves behind deposits of materials having different grain sizes, and just the material which has a desired grain size will be able to go through the screening surface 105c to discharge through the duct 120 along with the air forced in by the fan 107.
  • doors 111 greatly facilitates the maintenance and occasional cleaning operations of the containers where the latter are not provided with the members 115.
  • the invention fully achieves its objects. It should be pointed out that not only the high interia moving masses have been virtually removed and volume requirements reduced, but also the screening layers can be fully utilized because they have no dead pockets. Also quite easy is the arrangement of several screening layers for sorting to a desired grading level.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)
  • Sorting Of Articles (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Claims (10)

1. Vorrichtung zum Sortieren von körnigem Material, insbesondere für Mühlen, bestehend aus einem stationären Gehäuse (102), das in seinem Inneren wenigstens eine Aufbereitungskammer mit wenigstens einem Siebkörper (103) definiert, an welchen Einrichtungen (106) zur Zufuhr von zu sortierendem Material und Austragseinrichtungen (112) zum Austrag des nicht gesiebten Materials und/oder gesiebten Materials angeschlossen sind und wobei zwischen den Zuführungseinrichtungen (106) und den Austragsinrichtungen (112) Einrichtungen (107) für die Erzeugung einer Zwangsluftzirkulation eingeschaltet ist, um dadurch an wenigstens dem einen Siebkörper (103) einen Zwangsluftstrom, vermischt mit dem zu behandelnden Material, zu schaffen, dadurch gekennzeichnet, daß der genannte Siebkörper (103) drehbar im Gehäuse (102) gelagert ist und mit einem Drehantrieb (110) zusammenwirkt.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Siebkörper (103) aus einer Vielzahl von Behältern (104a-104c) besteht, die gegenseitig einander koaxial zugeordnet und je mit einer Siebwand (105a-105b) zur Zurückhaltung von Teilchen des zu behandelnden Materials mit abnehmendem Querschnitt vom innersten Behälter (104a) aus bis zum äußersten Behälter (104c) versehen sind.
3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß jedem der Behälter (104) ein Wischer (115) zugeordnet ist.
4. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Behälter (104a­104c) eine im wesentlichen zylindrische Form besitzen und koaxial ineinander eingesetzt sind, wobei die Wischer Bürsten (116a-116c) aufweisen, welche auf die Siebwände (105) der Behälter (104) wirken.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Siebkörper (103) aus wenigstens einem zylindrischen Behälter (104) mit einer Siebfläche (105) besteht, die mit schraubenförmigen Bürsten (116) zusammenwirkt, um das auf den Siebflächen (103) zurückgehaltene Material zu den Austragseinrichtungen (112) hin zu befördern.
6. Vorrichtung nach den Ansprüchen 2, 3, 4 oder 5, dadurch gekennzeichnet, daß benachbarte Behälter (104) mit verschiedenen Winkelgeschwindigkeiten in Drehung angetrieben werden.
7. Vorrichtung nach den Ansprüchen 2, 3, 4, 5 oder 6, dadurch gekennzeichnet, daß wenigstens an einem Ende der Behälter (104) Schautüren (111) im Gehäuse (102) vorgesehen sind.
8. Vorrichtung nach einem der mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Austragseinrichtungen (112) aus Austragsleitungen (112a-112c) bestehen, die an wenigstens einem Ende der Behälter (104) vorgesehen sind, wobei die Austragsleitungen (112a-112c) am Gehäuse angeordnet und durch Ventile (113) gesperrt sind.
9. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wischer (115) aus einem Bürstenteil (117) bestehen, der auf die Siebfläche (105c) des äußersten Behälters (104c) wirkt und am Gehäuse (102) gehaltert ist.
10. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Bürsten (116a-116c) aus schraubenförmigen Bürsten bestehen, von denen jede an Außenflächen eines Behälters (104a­104c) montiert ist und auf eine Innerfläche eines benachbarten Behälters wirkt.
EP83106679A 1983-05-20 1983-07-07 Vorrichtung zum Sortieren von körnigem Material, insbesondere für Mühlen Expired EP0126177B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106679T ATE33769T1 (de) 1983-05-20 1983-07-07 Vorrichtung zum sortieren von koernigem material, insbesondere fuer muehlen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8321934U IT8321934V0 (it) 1983-05-20 1983-05-20 Macchina selezionatrice di prodotti granulari in genere.
IT2193483U 1983-05-20

Publications (3)

Publication Number Publication Date
EP0126177A2 EP0126177A2 (de) 1984-11-28
EP0126177A3 EP0126177A3 (en) 1986-01-08
EP0126177B1 true EP0126177B1 (de) 1988-04-27

Family

ID=11189043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106679A Expired EP0126177B1 (de) 1983-05-20 1983-07-07 Vorrichtung zum Sortieren von körnigem Material, insbesondere für Mühlen

Country Status (5)

Country Link
EP (1) EP0126177B1 (de)
AT (1) ATE33769T1 (de)
DE (1) DE3376390D1 (de)
ES (1) ES524357A0 (de)
IT (1) IT8321934V0 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386363B (de) * 1986-06-27 1988-08-10 Heid Ag Maschf Verfahren und vorrichtung zur saatgutaufbereitung
US4991598A (en) * 1989-08-18 1991-02-12 R. J. Reyolds Tobacco Company Method of and apparatus for automatically analyzing the degradation of processed leaf tobacco
DE4331782C1 (de) * 1993-09-18 1994-08-18 Reimelt Dietrich Kg Siebeinrichtung
DE102007021004B3 (de) * 2007-05-04 2008-05-15 Rhewum Gmbh Siebmaschine
DE102007045664B3 (de) * 2007-09-25 2009-03-19 Michael Meserle Verfahren und Vorrichtung zum Entfernen von Staub und/oder faserförmigen Beimengungen aus einem Kunststoffgranulat
CN101596526B (zh) * 2009-06-01 2012-01-04 徐州腾宇羽绒制品设备有限公司 羽绒分毛机筛网清扫机构
JP6996238B2 (ja) * 2017-11-08 2022-01-17 セイコーエプソン株式会社 繊維原料再生装置
CN114160406A (zh) * 2021-12-26 2022-03-11 江苏吉能达环境能源科技有限公司 一种全自动多能筛选机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648326C2 (de) * 1976-10-26 1978-11-23 Lindemann Maschinenfabrik Gmbh, 4000 Duesseldorf Windsichter
GB1599547A (en) * 1978-05-25 1981-10-07 Motherwell Bridge Tacol Ltd Air classification apparatus
IT1133933B (it) * 1980-10-16 1986-07-24 Adriano Barbieri Apparecchiatura per abburattare,selezionare,classificare prodotti granulari in genere

Also Published As

Publication number Publication date
ATE33769T1 (de) 1988-05-15
ES8406032A1 (es) 1984-07-01
ES524357A0 (es) 1984-07-01
IT8321934V0 (it) 1983-05-20
DE3376390D1 (en) 1988-06-01
EP0126177A3 (en) 1986-01-08
EP0126177A2 (de) 1984-11-28

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