EP1141643B1 - Deshydrateur centrifuge - Google Patents

Deshydrateur centrifuge Download PDF

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Publication number
EP1141643B1
EP1141643B1 EP00901054A EP00901054A EP1141643B1 EP 1141643 B1 EP1141643 B1 EP 1141643B1 EP 00901054 A EP00901054 A EP 00901054A EP 00901054 A EP00901054 A EP 00901054A EP 1141643 B1 EP1141643 B1 EP 1141643B1
Authority
EP
European Patent Office
Prior art keywords
hollow body
centrifugal dryer
dryer according
rotor
centrifugal
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 - Lifetime
Application number
EP00901054A
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German (de)
English (en)
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EP1141643A1 (fr
Inventor
Günther Hultsch
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP1141643A1 publication Critical patent/EP1141643A1/fr
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Publication of EP1141643B1 publication Critical patent/EP1141643B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/24—Machines 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment

Definitions

  • the invention relates to a device for a centrifugal dehumidifier for the separation and dehumidification of granules.
  • Centrifugal dehumidifiers are used, for example, to dehumidify Plastic granules used. It is easy to clean Process rooms important because when changing the granulate color or Sort the mix of granules or fragments of the previous one must be avoided with the new batch. Furthermore are long service life of the device parts, low abrasion of the parts to be dehumidified Granules and low noise emissions are important.
  • centrifugal dehumidifiers according to the German published documents DE 195 37 41 A1, DE 43 30 078 A1 and DE 28 19 443 A1 and according to US patent 5,611,150 consist of a housing in which a Hollow body made of seven, rotatable with conveyor blades mounted, vertically arranged rotor coaxially encloses.
  • the sieves either form a closed cylinder or are segmented. she extend from the floor to the one at the top, Granules drop zone and are only used by fasteners as well possibly interrupted by a feed chute.
  • the suspension of granules and liquid becomes the lower area the centrifugal dehumidifier continuously fed, in the Space between the rotor and the hollow body formed from sieves. It is gripped by the rotating blades of the rotor, which is both an upward transport pulse and Transfer centrifugal forces to the suspension.
  • the Granules both transported upwards and between the sieves and tossing the shovels back and forth while those of the Granules separate liquid through the sieves and through the drain nozzle of the housing that houses the centrifugal dehumidifier is derived.
  • Centrifugal dehumidifiers of this type have proven themselves in principle. adversely is the contamination of the sieves with fragments of the granules, so that these screens are disassembled and cleaned before every color or type change or need to be replaced. Sieves also wear out relatively strong, are easily damaged when they are changed frequently generate abrasion on the granules to be dehumidified. For dehumidification of highly abrasive granules, such as with glass fibers filled plastic granules, they are therefore unsuitable. Still is the sound emitted by the impact of the granules on the sieves is considerable.
  • centrifugal dehumidifiers can be used isolate against excessive sound emissions, but this insulation is complex, because the accessibility of the sieves can be closed, such as folding doors, etc., on the housings.
  • the invention has for its object to a centrifugal dehumidifier create that reduces the abrasion of the granules.
  • an essential part is preferred at least in the upper area of the hollow body, as an unperforated jacket educated.
  • the liquid separated from the granules flows in Influence of centrifugal and gravitational acceleration on the inner wall of the unpunched jacket spiral down.
  • the unperforated Coat with its smooth inner surfaces causes little wear.
  • the unperforated cladding causes little sound, so that the hollow body where it is designed as an unperforated jacket, can also serve as an outer housing.
  • the lower region of the hollow body is preferably with sieve segments populated, or the hollow body is completely unperforated Sheath formed with a sieve in the lower region of the hollow body.
  • the main advantage of the invention is that, if at all, only small screen areas cleaned before changing color or grade or must be replaced. Remains of granules adhering to smooth walls are easy with the help of washing nozzles or by flooding the washable in the entire process room, whereas they are in sieve holes wedge. In addition, the elimination, at least in part, is reduced of an outer casing enclosing the process space the costs.
  • the shaft (5) of the rotor (1) is a centrifugal dehumidifier in a bearing housing (2) rotatably and over a pulley (3) from a, shown in Figure 2, motor (4) in Rotation can be set.
  • the rotor (1) consists of one, the bearing housing (2) enclosing pot (6), on which several holders (7) for the lower Conveyor blades (8) are mounted, and an intermediate disc (9) and an upper disc (10) for. Fastening the middle and top Holder (11, 12) for the middle and upper conveyor blades (13, 14).
  • the pot (6) of the rotor (1) is coaxial with fixed sieve segments (15) and a filling shaft (16) enclosed on a cubic Outer housing (17) are attached, with at least one removable or a hinged plate (18) for screen installation, a drain pipe (19) and an air blow-off pipe (20) is provided.
  • the top one Area of the rotor (1) encloses a flange-mounted on the outer housing (17), Unperforated jacket, flared in the shape of a truncated cone (21) with a granulate discharge nozzle (22) which is supported by a cover (23) with an air intake grate (24), a filter mat (25) and a support grille (26) is closed.
  • FIG. 3 shows a centrifugal dehumidifier, the one with conveyor blades (27) equipped rotor (28) designed as a closed hollow body is completely enclosed by an unperforated jacket (29), one has a cylindrical / conical shape.
  • the one with the rotor (28) coupled motor (30) is flanged onto the cover (31).
  • the lid (31) contains air intake openings (32).
  • the lower shaft (35) of the rotor (28) is rotatably mounted in a bearing housing (34), which is located in the base (33).
  • a tangential granulate discharge nozzle (36), in the lower area a filling shaft (37) and a downcomer (38) is arranged.
  • the downcomer (38) enters Air blow-off pipe (39) and has a vertical pipe (40) which in the Flow tank (41) with siphon (42) is immersed. Between the unpunched A screen (43) can be attached to the jacket (29) and the downcomer (38) become.
  • the filling shaft (16) is continuously loaded with suspension.
  • the liquid is in the lower area against the sieve segments (15) the outer housing (17) flung.
  • the unperforated jacket (21) flows down the inside of the wall until it Flows through sieve segments (15). All of the liquid leaves the Centrifugal dehumidifier through the drain port (19).
  • Through the lid (23) Air sucked in is partly with the granules, partly through blown off the air blow-off pipe (20).
  • a suction fan can be connected to the air blow-off pipe (20).
  • centrifugal dehumidifier differs differ from that of Figures 1 and 2 in that the rotor is completely enclosed by an unperforated jacket (29), so that all the liquid flows down the inside wall and if available, the relatively small sieve (43) in front of the downcomer (38) happens.
  • the vertical tube (40) the drain shaft into the liquid level of the flow container (41) with siphon (42). This arrangement is provided in the event that a suction fan is connected to the air blow-off pipe (39).
  • the area of the small sieve (43) is particularly sufficient if the liquid content of the supplied suspension is low.
  • the drain shaft (38) of a central dehumidifier 3 can be designed in such a way that the screen (43) with is interchangeable in a few simple steps. It is also possible to be complete to dispense with the sieve (43) and the draining liquid in the some granules may be contained in an upstream thickener to recirculate. Suspensions from liquids and granules are easy to thicken, the screens of static thickeners hardly incline for clogging, easy to clean and more accessible, than the screens of centrifugal dehumidifiers that only take safety measures may be opened.
  • the unperforated jacket (21, 29) can also be cylindrical throughout.
  • the liquid flows on the inner wall of a cylinder slower than in an extended one Cone, but ultimately the cost decides which form of the jacket and the rotor (1, 28) is more appropriate.

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)
  • Centrifugal Separators (AREA)
  • Drying Of Solid Materials (AREA)

Claims (12)

  1. Déshydrateur à force centrifuge pour des granulés, avec un rotor (1 ; 28) disposé verticalement muni de pales transporteuses (8,13,14 ;27), un corps creux (15, 21 ; 29) fixe entourant coaxialement le rotor, une tubulure d'évacuation des granulés (22 ; 36) disposée à l'extrémité supérieure du corps creux et une décharge (19 ;38) pour le liquide éliminé à l'extrémité inférieure du corps creux, une suspension de granulés dans un liquide pouvant être introduite dans l'espace entre le rotor et le corps creux, cette suspension pouvant être accélérée au moyen du rotor et projetée contre la paroi intérieure du corps creux et sa fraction liquide s'écoulant sur la paroi intérieure du corps creux, dans lequel une partie essentielle du corps creux se trouvant dans la zone de projection du rotor forme une enveloppe (21;29) non perforée.
  2. Déshydrateur à force centrifuge selon la revendication 1, caractérisé en ce qu'au moins une zone supérieure du corps creux forme l'enveloppe non perforée (21 ; 29).
  3. Déshydrateur à force centrifuge selon la revendication 1 ou la revendication 2, caractérisé en ce que la zone inférieure, tout au plus, du corps creux (15,21) entourant le rotor (21) est munie de segments perforés (15), qui sont disposés dans une enveloppe extérieure (17) pour l'élimination du liquide séparé des granulés.
  4. Déshydrateur à force centrifuge selon la revendication 1 ou la revendication 2, caractérisé en ce que le corps creux (29) entourant le rotor (28) est totalement conçu comme une enveloppe non perforée avec un tamis (43) dans la zone inférieure du corps creux pour l'élimination du liquide séparé des granulés.
  5. Déshydrateur à force centrifuge selon la revendication 4, caractérisé en ce que le corps creux (29) est conçu avec des ouvertures pour un tuyau de remplissage (37), une tubulure d'évacuation des granulés (36) et un tuyau d'évacuation (38) derrière le tamis (43) pour le liquide.
  6. Déshydrateur à force centrifuge selon la revendication 5, caractérisé en ce que le tuyau d'évacuation (38) est relevable.
  7. Déshydrateur à force centrifuge selon la revendication 5 ou la revendication 6, caractérisé en ce qu'un tube perpendiculaire (40) du tuyau d'évacuation (38) plonge dans un récipient de passage (41) avec un siphon (42) et un aspirateur est relié à une conduite de dégazage dans l'atmosphère (39) fixée au tuyau d'évacuation (38).
  8. Déshydrateur à force centrifuge selon l'une des revendications 1 à 7, caractérisé en ce que l'évacuation du déshydrateur à force centrifuge conduit à un épaisseur.
  9. Déshydrateur à force centrifuge selon l'une des revendications 1 à 8, caractérisé en ce que l'enveloppe non perforée (21 ;29) est cylindrique.
  10. Déshydrateur à force centrifuge selon l'une des revendications 1 à 9, caractérisé en ce que l'enveloppe non perforée (21 ;29) est tronconique.
  11. Déshydrateur à force centrifuge selon l'une des revendications 1 à 10, caractérisé en ce que la zone supérieure de l'enveloppe non perforée (21 ;29) élargie vers le bas en un tronc de cône est en desssous cylindrique.
  12. Déshydrateur à force centrifuge selon l'une des revendications 1 à 11, caractérisé en ce que la zone du corps creux conçue comme une enveloppe non perforée constitue une partie de l'enveloppe extérieure du déshydrateur à force centrifuge.
EP00901054A 1999-01-04 2000-01-03 Deshydrateur centrifuge Expired - Lifetime EP1141643B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19900042 1999-01-04
DE19900042A DE19900042A1 (de) 1999-01-04 1999-01-04 Fliehkraft-Entfeuchter
PCT/EP2000/000006 WO2000040911A1 (fr) 1999-01-04 2000-01-03 Deshydrateur centrifuge

Publications (2)

Publication Number Publication Date
EP1141643A1 EP1141643A1 (fr) 2001-10-10
EP1141643B1 true EP1141643B1 (fr) 2003-04-16

Family

ID=7893551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00901054A Expired - Lifetime EP1141643B1 (fr) 1999-01-04 2000-01-03 Deshydrateur centrifuge

Country Status (4)

Country Link
US (1) US6655039B2 (fr)
EP (1) EP1141643B1 (fr)
DE (2) DE19900042A1 (fr)
WO (1) WO2000040911A1 (fr)

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
US6467188B1 (en) * 2000-10-10 2002-10-22 The Conair Group, Inc. Centrifugal pellet dryer apparatus
JP2004311858A (ja) * 2003-04-10 2004-11-04 Nec Electronics Corp 半導体集積回路装置
US6938357B2 (en) * 2003-09-09 2005-09-06 Carter Day International, Inc. Forced air circulation for centrifugal pellet dryer
US8079158B2 (en) * 2004-09-02 2011-12-20 Grupo Petrotemex, S.A. De C.V. Process for separating and drying thermoplastic particles under high pressure
CN100397014C (zh) * 2006-07-20 2008-06-25 曹永良 离心甩干机的转子
ATE532615T1 (de) * 2006-09-20 2011-11-15 Econ Maschb Und Steuerungstechnik Gmbh Vorrichtung zum entwässern und trocknen von feststoffen, insbesondere von unterwassergranulierten kunststoffen
US9925694B2 (en) 2009-02-24 2018-03-27 Gala Industries, Inc. Continuous bagging processes and systems
KR101517455B1 (ko) * 2009-02-24 2015-05-04 갈라 인더스트리스 인코포레이티드 연속 배깅 방법 및 시스템
JP5680635B2 (ja) * 2009-06-22 2015-03-04 ガラ・インダストリーズ・インコーポレイテッドＧａｌａ Ｉｎｄｕｓｔｒｉｅｓ， Ｉｎｃ． 処理能力が向上したペレット化、乾燥、及び袋詰めの連続システム
DE102010032350A1 (de) * 2010-07-27 2012-02-02 Automatic Plastics Machinery Gmbh Vorrichtung zur Trocknung von Granulatkörnern
CN102519226A (zh) * 2011-12-28 2012-06-27 洛阳中原矿山机械制造有限公司 离心脱水机
CN109163511B (zh) * 2018-08-10 2020-05-19 南京永杰化工机械制造有限公司 一种塑料粒子离心脱水装置

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US2727631A (en) * 1952-10-07 1955-12-20 Mcnally Pittsburg Mfg Corp Centrifugal drier
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US3194492A (en) * 1962-06-28 1965-07-13 Richard A Koffinke Pressurized centrifuge
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US3458045A (en) * 1966-08-26 1969-07-29 Gala Inc Centrifugal pellet drier
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DE2819443C2 (de) 1978-05-03 1986-11-20 Gala Industries, Inc., Virginia Rotor für einen Fliehkraftabscheider
CH663273A5 (en) * 1984-12-18 1987-11-30 Fershan Holding S A Method of continuous drying of a powdered substance and apparatus for implementing it
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Also Published As

Publication number Publication date
US20020014019A1 (en) 2002-02-07
WO2000040911A1 (fr) 2000-07-13
DE19900042A1 (de) 2000-07-06
US6655039B2 (en) 2003-12-02
EP1141643A1 (fr) 2001-10-10
DE50001785D1 (de) 2003-05-22

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