EP3555541A1 - Dispositif pour sécher des granulés - Google Patents

Dispositif pour sécher des granulés

Info

Publication number
EP3555541A1
EP3555541A1 EP17797049.8A EP17797049A EP3555541A1 EP 3555541 A1 EP3555541 A1 EP 3555541A1 EP 17797049 A EP17797049 A EP 17797049A EP 3555541 A1 EP3555541 A1 EP 3555541A1
Authority
EP
European Patent Office
Prior art keywords
rotor
granules
screen
bores
process fluid
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.)
Withdrawn
Application number
EP17797049.8A
Other languages
German (de)
English (en)
Inventor
Florian Fischer
Alexander Helm
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.)
Maag Automatik GmbH
Original Assignee
Maag Automatik GmbH
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 Maag Automatik GmbH filed Critical Maag Automatik GmbH
Publication of EP3555541A1 publication Critical patent/EP3555541A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/24Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by shooting or throwing the materials, e.g. after which the materials are subject to impact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00Conditioning or physical treatment of the material to be shaped
    • B29B13/06Conditioning or physical treatment of the material to be shaped by drying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/16Auxiliary treatment of granules
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/22Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being vertical or steeply inclined
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/08Granular materials

Definitions

  • the invention relates to a device for drying granules, e.g. of a plastic material having a housing with a granule process fluid inlet, a granulator outlet and a fluid outlet, wherein in the housing a rotatable rotor is arranged with rotor blades arranged thereon, which granules and a process fluid, preferably water, respectively imprinting a direction of movement, so that the process fluid, in which the Granulatkömer are originally, there from the granules in a Fluidab2020 Symposium with at least one at least partially surrounding the rotor outer sieve with sieve openings having a size smaller than the Granulatkömer, by passing from a Siebvorderseite a Siebrückseite is separable, according to the preamble of claim 1.
  • a device for drying granules e.g. of a plastic material having a housing with a granule process fluid inlet, a granulator outlet and a fluid
  • European Patent Application EP 0 653 277 A2 describes a granulate dryer for abrasive and impact-sensitive plastic granules, in which moist air is additionally sucked off through the screen basket there as well as through bores introduced into the rotor there.
  • German Offenlegungsschrift DE 10 2007 040 135 A1 shows a centrifugal dryer with conical sieve and rotor blade arrangement.
  • This object is achieved with a device for drying Granulatkömem with the features of claim 1.
  • Preferred embodiments of the invention are defined in the subclaims.
  • the device according to the invention for drying Granulatkömem has a housing and located thereinnapssaufgargungs worn which locally the Granulatkömem and a process fluid imparts a different direction of movement, so that the process fluid in which the granules are originally, there, d. H. in the housing, can be separated from the Granulatkömem in a drainage area with at least one sieve with sieve openings having a size smaller than the Granulatkömer by passage from a Siebvorderseite to a Siebrückseite.
  • Siebvorderseite or Siebrückseite thereby designate the two sides of the screen surface, namely the side on which the screenings remain, or the back of the screen surface, in the region of the process fluid and the objects, d.
  • Granules or dust which are smaller than the screen openings, pass through the screen openings after passing through.
  • the rotor has a hollow rotor shaft with rotor bores, which are arranged at least in sections in the hollow rotor shaft.
  • a fan wheel is additionally mounted coaxially on the rotor shaft in such a way that air can be sucked into the interior of the hollow rotor shaft via the granulator outlet and the rotor bores by means of the fan wheel and can be discharged from the housing via a fan wheel air outlet.
  • the rotor bores can literally be understood as bores, as punched-out parts or as openings which are otherwise introduced in the rotor shaft as part of a production process.
  • the aspirated air can be aspirated on the one hand, as claimed, on the Granulatgromerauslass, but possibly also on other openings in the dryer housing.
  • the device according to the invention with the corresponding technical features uses the impressed forces or force components on the granules or the process fluid, impressed by the rotor with the rotor blades, thereby forcibly shaping a movement of the granulate grains or the process fluid in the direction of the drainage screen openings, so that the Granulatgromer certain size or the process fluid are separated by the passage through the corresponding sieve openings.
  • the force component used in this case can be a centrifugal force component, which centrifugally moves the process fluid or granules in an otherwise impressed curve movement, in particular a helical movement, namely by the rotor with the rotor blades.
  • the rotor according to the invention with a hollow rotor shaft and the additional fan is preferably in countercurrent an additional air flow in the invention fiction assen drying device imprinted so that a drainage or separation of Granulatkömem and process fluid can be done very easily and reliably.
  • the integration of an additional fan, coaxially mounted on the rotor shaft, results in a structurally simple measure, which in particular can avoid additional storage fiction, according.
  • the device according to the invention preferably has a design of the rotor blades, in which the rotor blades are arranged at least partially helically on the rotor shaft and thereby at least partially have an outer contour which corresponds to the inner contour of the screen. That is, in the installed position, the corresponding rotor blades with their outer contours, i. arranged with the respective outer edges, each in the local area with a predetermined distance from the inner contour of the screen spaced, to improve the transport of the granules, the corresponding rotor blades are designed according to the invention helical.
  • the outer design of the rotor blades can thus be carried out in a structurally simple way for an effective transport of the granules with an effective separation of Granulatkömem and process fluid, at the same time the operation of the thus designed drying device is improved to the effect that the tendency of granules, themselves clumping in the area of the rotor, can be avoided.
  • the helically arranged rotor blades in the installation position of the rotor shaft from bottom to top can have an altered, particularly preferably a helix pitch which is continuously changed over the height.
  • the residence time and the imprinted movement components can be influenced correspondingly at the respective locations.
  • envelopes of the outer contour of the rotor blades and the inner contour of the sieve have a coaxial arrangement, i. they are axially uniformly far away from one another in the respective region, and according to the invention the internal envelope of the rotor blades is radially spaced from the outer envelope of the sieve by four to twenty times the average diameter of the granules.
  • the rotor blades and the sieve at least partially in the installed position in the device according to the invention from top to bottom in the vertical Seen cross section thereof have a conically tapered course. That is, in cross-section, the radial diameter of the rotor with the rotor blades mounted thereon and the surrounding screen are made increasingly increasing from bottom to top in diameter. This allows a particularly efficient dewatering and at the same time allows a largely additionally improved avoidance of the tendency to agglomerate in the upper area already substantially freed from the process fluid Granulatgromer.
  • a device is a preferred structure in which the rotor and the fan are attached to each other so that they are rotatable at the same speed.
  • the rotor and the fan wheel can be screwed together, be welded to each other, or be connected to each other in any other way.
  • the fan is arranged according to a preferred embodiment of the invention in the installed position in the device according to the invention above the rotor.
  • the rotor bores are arranged at least in a central region of the rotor.
  • the rotor bores at least in the central region of the rotor, a diameter in the range of 0.25 to 0.4 times the inner diameter having the hollow rotor shaft.
  • a particularly strong air flow can be realized by the arrangement according to the invention.
  • the arrangement of the rotor bores can be designed so that at least in the lower or upper region of the rotor, these have a diameter in the range of 0.5 to 2 times the diameter of the granules to improve the cross-flow component of the invention.
  • a diameter of the rotor bores in the range of 0.5 to 2 times the diameter of the granules corresponds to a much smaller diameter compared to 0.25 to 0.4 times the inner diameter of the hollow rotor shaft.
  • the rotor bores are substantially larger in the middle region of the hollow rotor shaft of the rotor than in the upper or lower region of the rotor.
  • Fig. 1 is a schematic view of an apparatus for drying Granulatkömem according to an embodiment of the invention
  • Fig. 2 is a schematic longitudinal sectional view of the apparatus for drying Granulatkömem of Fig. 1;
  • Fig. 3 is a schematic view of the rotor and Lüfterradanowski the apparatus for drying Granulatkömem of Figures 1 and 2.
  • FIG. 4 is a schematic longitudinal sectional view of the rotor and fan assembly of FIG. 3.
  • FIG. 4 is a schematic longitudinal sectional view of the rotor and fan assembly of FIG. 3.
  • the device according to the invention comprises a housing 1 with a granules-process fluid inlet 6, a granulator outlet 7 and a fluid outlet (not shown in the figures).
  • the interior of the invention Device can, as described later, be removed by lifting the upper part of the device according to the invention (shown in Figure 1 by the double arrow in the upper area) upwards out of the housing 1 of the device.
  • FIG. 2 shows a schematic longitudinal sectional view of the device for drying Granulatkömem of Figure 1.
  • a rotatable rotor 2 is arranged therein, with rotor blades arranged therein, which impart a direction of movement to the granules and to a process fluid, so that the process fluid in which the granules are still originally located there in the area of rotation of the rotor Granulatkömem in Fluidab Hyundai Scheme by means of a rotor at least partially outer surrounding sieve with sieve openings 5 with a size smaller than the Granulatkömer, by means of passage from the Siebvorderseite to Siebrückseite are separable.
  • the rotor 2 has a hollow rotor shaft 9, in which rotor bores 10 are formed at least in sections.
  • the rotor bores 10 in the middle region of the rotor shaft 9 are larger than the rotor bores 10 in the upper or lower region of the rotor shaft 9.
  • the Granulatkömer revitalizfluidgemisch is supplied there in the lower region of the housing 1 and guided by rotation of the rotor and the correspondingly arranged rotor blades 3 on the rotor with a direction of movement upward, wherein the rotation of the rotor, the process fluid under the influence of this rotation radially to is externally pressed through the screen 4 with screen openings 5 and then discharged via the process fluid outlet (in the figures as I said not) from the housing.
  • the fan wheel mounted coaxially on the rotor shaft 9 air is sucked into the interior of the hollow rotor shaft 9 via the granule chamber outlet 7 and the rotor bores 10 and discharged from the housing via a fan wheel air outlet 8.
  • openings are provided for the outer region of the fan wheel in the upper region of the hollow rotor shaft.
  • the fan and the rotor are rotatably driven by a common motor 12 at the same speed.
  • the rotor 2 can be taken out of the housing 1 together with the fan 1 from the mounting position upwards.
  • the rotor blades 3 are arranged at least partially helically on the rotor shaft 9 and have at least partially an outer contour in the region of its outer edge, which corresponds to the inner contour of the screen at the respective location. That is, in the illustration of Figure 2 that the respective outer edges of the individual rotor blades at a constant distance to the inside of the wire 4.
  • envelopes of the outer contour of the rotor blades and the inner contour of the screen are arranged coaxially and the inner envelope of the respective rotor blades has a radial distance from the outer envelope of the screen, namely in the region of about 5 times the average diameter shown in FIG with such a device from the process fluid to be separated Granulatgromer.
  • the rotor blades 3 and the sieve 4 have a conically tapering profile at least in sections in the installed position from top to bottom in the vertical cross section.
  • the rotor bores 10 are larger in the middle region of the rotor 2, namely approximately in the region of 0.3 times the inside diameter of the hollow rotor shaft.
  • the rotor bores are made with a much smaller diameter, namely about 1.5 times the diameter of the granules.
  • FIG. 3 shows a schematic view of the rotor and fan assembly of the apparatus for drying Granulatkömem of Figure 1 and 2.
  • the fan 11 and the rotor 2 are fixedly attached to each other.
  • the hollow rotor shaft 9 has in particular in the central region rotor bores 10 and the fiction, designed according to the rotor blades 3 are arranged at least partially helically on the rotor shaft 9. In this case, the pitch of the helix increases from below in FIG. 3 as seen in the top in FIG. 3, whereby a different flow component can be imparted to the granulate body in the respective region.
  • FIG. 4 shows a schematic longitudinal sectional view of the rotor and fan assembly of Figure 3. It can be seen in particular that in the upper and lower portions of the hollow rotor shaft 9 arranged rotor bores 10 have substantially smaller diameter than the rotor bores 10 in the central region of the hollow rotor shaft. 9

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un dispositif pour sécher des granulés, ce dispositif comprenant un carter (1) pourvu d'une entrée de fluide de traitement de granulés (6), d'une sortie de granulés (7) et d'une sortie de fluide, ainsi qu'un rotor (2) rotatif qui est agencé dans le carter (1) et sur lequel sont disposées des palettes (3) qui impriment aux granulés et à un fluide de traitement une direction de déplacement respective de sorte que le fluide de traitement, dans lequel se trouvent les granulés initialement, se sépare des granulés dans une zone d'évacuation de fluide au moyen d'au moins un tamis (4), qui entoure extérieurement au moins une partie du rotor (2) et qui comporte des ouvertures (5) dont la taille est inférieure à celle des granulés, par passage d'une face avant à une face arrière du tamis. L'invention se caractérise en ce que le rotor (2) comprend un arbre rotorique (9) creux présentant des trous (10) au moins par endroits, une roue de ventilateur (11) étant disposée coaxialement sur l'arbre rotorique (9) de telle manière que de l'air puisse être aspiré au moyen de cette roue de ventilateur (11) à l'intérieur de l'arbre rotorique (9) creux par la sortie de granulés (7) et les trous (10) du rotor (2) et évacué du carter (1) par une sortie d'air (8) de la roue de ventilateur.
EP17797049.8A 2016-10-17 2017-10-16 Dispositif pour sécher des granulés Withdrawn EP3555541A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016006420.8U DE202016006420U1 (de) 2016-10-17 2016-10-17 Vorrichtung zur Trocknung von Granulatkörnern
PCT/EP2017/001213 WO2018072871A1 (fr) 2016-10-17 2017-10-16 Dispositif pour sécher des granulés

Publications (1)

Publication Number Publication Date
EP3555541A1 true EP3555541A1 (fr) 2019-10-23

Family

ID=57395063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17797049.8A Withdrawn EP3555541A1 (fr) 2016-10-17 2017-10-16 Dispositif pour sécher des granulés

Country Status (8)

Country Link
US (1) US20190240870A1 (fr)
EP (1) EP3555541A1 (fr)
JP (1) JP2019532252A (fr)
KR (1) KR20190070923A (fr)
CN (1) CN109952483A (fr)
DE (1) DE202016006420U1 (fr)
TW (1) TW201815541A (fr)
WO (1) WO2018072871A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109291305A (zh) * 2018-09-25 2019-02-01 合肥瀚鹏新能源有限公司 一种塑料颗粒直式气流搅拌干燥机
CN112326496B (zh) * 2020-04-28 2022-07-19 苏州喜全软件科技有限公司 一种微波技术用材料含水率检测装置
CN112129077B (zh) * 2020-09-12 2022-01-11 杭州中兰新材料有限公司 一种化工塑料颗粒脱水干燥一体机
CN113091426B (zh) * 2021-04-07 2021-11-16 盐城金锐粮机有限公司 一种高效的可除杂质粮食烘干机
CN113739521B (zh) * 2021-09-24 2022-08-23 广东九彩新材料有限公司 一种高含量炭黑色母粒用的干燥装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565015A (en) * 1983-07-27 1986-01-21 Gala Industries, Inc. Centrifugal pellet dryer
DE4133642C1 (fr) * 1991-10-11 1993-02-25 Alb. Klein Gmbh & Co. Kg, 5241 Niederfischbach, De
DE4338030C1 (de) 1993-11-08 1994-11-24 Werner & Pfleiderer Granulattrockner für abrasive und schlagempfindliche Kunststoffgranulate
US6237244B1 (en) * 1998-10-19 2001-05-29 Gala Industries, Inc. Centrifugal pellet dryer for small applications
US7171762B2 (en) * 2004-10-19 2007-02-06 Gala Industries, Inc. Self-cleaning centrifugal pellet dryer and method thereof
ATE532615T1 (de) * 2006-09-20 2011-11-15 Econ Maschb Und Steuerungstechnik Gmbh Vorrichtung zum entwässern und trocknen von feststoffen, insbesondere von unterwassergranulierten kunststoffen
DE102007040135A1 (de) * 2007-08-24 2009-02-26 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh Verfahren zur Herstellung von Polyester-Granulaten aus hochviskosen Polyester-Schmelzen sowie Vorrichtung zur Herstellung der Polyester-Granulate
DE102010034119A1 (de) * 2010-08-12 2012-02-16 Automatik Plastics Machinery Gmbh Vorrichtung zur Trocknung von Granulatkörnern
CN103925783B (zh) * 2014-04-29 2016-01-20 杭州诺通实业有限公司 直立式废塑料脱水装置

Also Published As

Publication number Publication date
CN109952483A (zh) 2019-06-28
DE202016006420U1 (de) 2016-11-07
US20190240870A1 (en) 2019-08-08
WO2018072871A1 (fr) 2018-04-26
KR20190070923A (ko) 2019-06-21
JP2019532252A (ja) 2019-11-07
TW201815541A (zh) 2018-05-01

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