EP0126177A2 - Dispositif pour le triage de produits granuleux, en particulier dans le domaine de la moulure - Google Patents

Dispositif pour le triage de produits granuleux, en particulier dans le domaine de la moulure Download PDF

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Publication number
EP0126177A2
EP0126177A2 EP83106679A EP83106679A EP0126177A2 EP 0126177 A2 EP0126177 A2 EP 0126177A2 EP 83106679 A EP83106679 A EP 83106679A EP 83106679 A EP83106679 A EP 83106679A EP 0126177 A2 EP0126177 A2 EP 0126177A2
Authority
EP
European Patent Office
Prior art keywords
product
screening
screened
containers
chamber
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
EP83106679A
Other languages
German (de)
English (en)
Other versions
EP0126177A3 (en
EP0126177B1 (fr
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/fr
Publication of EP0126177A3 publication Critical patent/EP0126177A3/en
Application granted granted Critical
Publication of EP0126177B1 publication Critical patent/EP0126177B1/fr
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 jn the mill grinding field such as incoherent loose products, and in particular floor 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.
  • the task 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 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 unimportant 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.
  • an apparatus for sorting granulated products particularly in the mill grinding field, comprising a stationary frame defining on its interior at least one processing chamber having a screening layer which subdivides said chamber into a first chamber half whereto means for feeding the product to be sorted and first meansjb r discharging the non-screened product are connected, and a second chamber half Whereto second means of discharging the screened product are connected, characterized in that it comprises members for generating a forced air circulation between said feeding means and said discharging means, thereby defining, at said at least one screening layer, a forced flow of air mixed with the product being treabed, and in that within said forced flow said discharging means and said screening layer are positioned such that sorting of the product being fed is accomplished in a substantially spontaneous fashion.
  • the apparatus 1,1' comprises a stationary frame 2,2' extending preferably column-like and being provided on its interior with at least one processing chamber 3,3', and preferably three such processing chambers in superimposed relationship as shown in the drawings.
  • Each processing chamber 3,3' hereinafter simply termed chamber, includes at least one screening layer 4 defined by any suitable plate-like element having holes or openings of a desired size, e.g. a perforated piece of sheet metal, or a sifter silk layer.
  • Figures 1 to 3 evidence how the screening layers 4,4' arranged at each chamber 3,3' are formed with holes or openings of different, decreasing sizes from that end of the frame 2 where the product to be screened is fed in, to that end of the frame wherefrom the finest material fraction comes out.
  • the screening layer 4,4' subdivides the chamber space into a first chamber half 3a,3'a and a second chamber half 3b, 3'b.
  • Fee ding means 5,5' for the product to be sorted and first discharging means 6,6' for the non-screened product converge into the first chamber half 3a,3'a.
  • first discharging means 6,6' are located at the base of each first chamber half 3a,3'a and comprise, inter alia, a discharge port 8, 8' extending in at least one duct 9,9' wherein valving means, e.g. spider valves, 10,10' are inserted.
  • auxiliary means 11,11' for wiping each screening layer 4,4', as defined for example by brush elements 12,12' driven through a chain drives 13,13' .
  • the auxiliary means 11,11' are each arranged in each first chamber half 3a,3'a.
  • An essential feature of the apparatus according to this invention is the provision of members effective to generate a forced air circulation between said feeding and said discharging means so as to achieve a substantially spontaneous sorting process of the granulated product being processed, as well as the fact that the entire internal structure of the apparatus is arranged to accommodate the actions of these members.
  • said members comprise a suction device 14 located at the base of the frame 2 along a pipe 15 forming the final discharge end for the screened product, that is for the granulated product which has also gone through the last screening layer 4.
  • the suction device 14 may be extended into further means, known per se, such as one or more cyclones, to collect the last product screened as well.
  • the feeding means 5 be such as to convey the product to be sorted to the top edge of the respective screening layer 4, which is obliquely arranged from the vertical.
  • the discharge port 8 is located at the opposite, bottom end of the screening layer 4, so as to receive the non-screened product, that is not passed through the screening layer 4, by gravity only.
  • the feeding means 5 which comprise oriented partitions or inlet ducts, create , owing to the provision of the suction device 14, forced flows of air admixed to the product to be screened, which on the one side tend to cause the product to pass through the respective screening layers 4, and on the other side cause, by reflection from the screening layers 4, a component of the forced flow which tends to spontaneously convey the non-screened product toward the respective discharge ports 6.
  • auxiliary means 12 act on the respective screening layers in a direction toward said discharge ports 8, thereby contributing to the conveyance of the non-screened product.
  • said members effective to generate a forced air circulation comprise a device 14' operative to deliver pressurized air to the base of the frame 2.
  • the device 14' is inserted into a delivery pipe 16' which branches off, for example, in three pipes 17' forming at their ends the feeding means 5' for the chamber 3' located at the base of the frame 2'.
  • the figures evidence that the pipes 17' are inserted into an oblique plate 18' constituting the bottom of a first chamber half 3'a.
  • the oblique plate 18' merges at its base with a discharge port 8', and at the connection holes to the pipes 17', the same plate is formed with vanes 19' partly directing the forced air flow mixed with the product being treated and hindering the return of the non-screened material which slides down across the oblique plate 18'.
  • Figures 2 and 3 In practice, shown in Figures 2 and 3 are apparatus with the first chamber half 3'a in a reversed position with respect to Figure 1, i.e. located below the second chamber half 3 'b .
  • the introduction of the product to be screened into the forced air circulation generated by the device 14' may be accomplished in any of several ways, e.g., as shown in Figure 2, it may be accomplished by having a supply duct 20' for the product to be screened led into the pipe 15.
  • the feeding means for the product to be screened namely the pipes 17' and holes formed through each oblique plate 18', with their respective vanes, may be variously arranged.
  • Figure 2 also shows a sliding pull out support 21' for the screening layers 4'.
  • Figure 3 shows, inter alia, the control members for the auxiliary means 11': e.g. an electric motor 22' actuating chain drives 23'.
  • the product to be screened is transported and sorted by a forced air circulation which directly or indirectly causes the product to be screened through the screening layers and the non-screened product to be conveyed toward the discharge ports. Contributing to the latter function is also the simple falling action of the non-screened product.
  • auxiliary means 11 ,11' is important to the constant cleaning of the screening layers but only ancillary to the granulated material sorting operations.
  • said auxiliary means are enabled to only draw very low power.
  • the third 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 physically 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 to 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 those 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 whereinto 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,116 c 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 augen-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 inertia 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 column arrangement of several screening layers for sorting to a desired grading level.
  • the invention is susceptible of many modifications and variations, without departing from the scope of the instant inventive concept.
  • all of the technical details, shapes, dimensions, and materials used may be any selected ones to meet individual requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Sorting Of Articles (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
EP83106679A 1983-05-20 1983-07-07 Dispositif pour le triage de produits granuleux, en particulier dans le domaine de la moulure Expired EP0126177B1 (fr)

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 true EP0126177A2 (fr) 1984-11-28
EP0126177A3 EP0126177A3 (en) 1986-01-08
EP0126177B1 EP0126177B1 (fr) 1988-04-27

Family

ID=11189043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106679A Expired EP0126177B1 (fr) 1983-05-20 1983-07-07 Dispositif pour le triage de produits granuleux, en particulier dans le domaine de la moulure

Country Status (5)

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

Cited By (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
EP0413577A2 (fr) * 1989-08-18 1991-02-20 R.J. Reynolds Tobacco Company Procédé et appareil pour l'analyse automatique de la dégradation de feuilles de tabac traitées
EP0643999A2 (fr) * 1993-09-18 1995-03-22 Dietrich Reimelt Kg Dispositif de tamisage
EP2042244A2 (fr) * 2007-09-25 2009-04-01 Michael Meserle Procédé et dispositif destinés à supprimer des poussières et/ou des impuretés en forme de fibres d'un granulé de matière synthétique
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
EP1987894A3 (fr) * 2007-05-04 2013-07-03 Rhewum GmbH Crible
CN109750544A (zh) * 2017-11-08 2019-05-14 精工爱普生株式会社 分离装置以及纤维原料再生装置
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648326B1 (de) * 1976-10-26 1978-03-30 Lindemann Maschfab Gmbh Windsichter
EP0006295A1 (fr) * 1978-05-25 1980-01-09 Secretary of State for Industry in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland Appareil de classification pneumatique
DE3138430A1 (de) * 1980-10-16 1982-08-05 Adriano Bressana Bottarone Pavia Barbieri Vorrichtung zum sieben, sortieren und klassieren vonkoernigen produkten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648326B1 (de) * 1976-10-26 1978-03-30 Lindemann Maschfab Gmbh Windsichter
EP0006295A1 (fr) * 1978-05-25 1980-01-09 Secretary of State for Industry in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland Appareil de classification pneumatique
DE3138430A1 (de) * 1980-10-16 1982-08-05 Adriano Bressana Bottarone Pavia Barbieri Vorrichtung zum sieben, sortieren und klassieren vonkoernigen produkten

Cited By (13)

* 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
EP0413577A2 (fr) * 1989-08-18 1991-02-20 R.J. Reynolds Tobacco Company Procédé et appareil pour l'analyse automatique de la dégradation de feuilles de tabac traitées
EP0413577A3 (en) * 1989-08-18 1992-12-30 R.J. Reynolds Tobacco Company Method and apparatus for automatically analyzing the degredation of processed leaf tobacco
EP0643999A2 (fr) * 1993-09-18 1995-03-22 Dietrich Reimelt Kg Dispositif de tamisage
EP0643999A3 (fr) * 1993-09-18 1995-09-06 Reimelt Dietrich Kg Dispositif de tamisage.
US5570790A (en) * 1993-09-18 1996-11-05 Dietrich Reimelt Kg Strainer having a main screen and a fore screen
EP1987894A3 (fr) * 2007-05-04 2013-07-03 Rhewum GmbH Crible
EP2042244A3 (fr) * 2007-09-25 2011-03-23 Michael Meserle Procédé et dispositif destinés à supprimer des poussières et/ou des impuretés en forme de fibres d'un granulé de matière synthétique
EP2042244A2 (fr) * 2007-09-25 2009-04-01 Michael Meserle Procédé et dispositif destinés à supprimer des poussières et/ou des impuretés en forme de fibres d'un granulé de matière synthétique
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
CN109750544A (zh) * 2017-11-08 2019-05-14 精工爱普生株式会社 分离装置以及纤维原料再生装置
CN109750544B (zh) * 2017-11-08 2021-11-26 精工爱普生株式会社 分离装置以及纤维原料再生装置
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

Also Published As

Publication number Publication date
IT8321934V0 (it) 1983-05-20
ES8406032A1 (es) 1984-07-01
DE3376390D1 (en) 1988-06-01
ATE33769T1 (de) 1988-05-15
EP0126177A3 (en) 1986-01-08
EP0126177B1 (fr) 1988-04-27
ES524357A0 (es) 1984-07-01

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