EP0611937B1 - Malaxeur-sécheur - Google Patents

Malaxeur-sécheur Download PDF

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Publication number
EP0611937B1
EP0611937B1 EP93120513A EP93120513A EP0611937B1 EP 0611937 B1 EP0611937 B1 EP 0611937B1 EP 93120513 A EP93120513 A EP 93120513A EP 93120513 A EP93120513 A EP 93120513A EP 0611937 B1 EP0611937 B1 EP 0611937B1
Authority
EP
European Patent Office
Prior art keywords
housing
mixer
drying gas
longitudinal axis
central longitudinal
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
EP93120513A
Other languages
German (de)
English (en)
Other versions
EP0611937A1 (fr
Inventor
Peter Illing
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.)
Draiswerke GmbH
Original Assignee
Draiswerke 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6889417&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0611937(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Draiswerke GmbH filed Critical Draiswerke GmbH
Publication of EP0611937A1 publication Critical patent/EP0611937A1/fr
Application granted granted Critical
Publication of EP0611937B1 publication Critical patent/EP0611937B1/fr
Anticipated expiration legal-status Critical
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
    • F26B17/18—Machines 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
    • F26B17/20—Machines 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 horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F26B25/007—Dust filtering; Exhaust dust filters

Definitions

  • the invention relates to a mixer-dryer according to the preamble of Claim 1.
  • DE-U-91 06 640 describes a device for conditioning powder Bulk, especially powdered sugar, known.
  • a device has a gas vent that is provided above the housing receiving a mixer.
  • the longitudinal extension the gas discharge in the direction of the axis of rotation of the mixer amounts to at most 1/4 of the length of the housing.
  • the bottom of the case is only for Part gas permeable, the gas permeable parts made of sintered material, which a drying gas can only flow through to a small extent.
  • the high delicacy the pores of the soil material are necessary for the conditioning of powdered sugar. Therefore, no strong airflow can be generated inside the housing, so that not all areas inside the housing can be reached by the air flow.
  • the conditioning device thus has the disadvantage that a strong flow of the medium to be dried is not possible and that with the drying gas flow entrained dust particles are deflected in the upper area of the housing, until they reach the filter in the gas exhaust. This creates a significant one Pressure drop outside the material bed, which is a highly effective drying of the material prevented.
  • a drying device with an air filter in which Dried goods are conveyed into a drying room via a conveyor mechanism is where the material to be dried comes to rest.
  • the drying room is up limited by a gas-permeable plate that is round. Laterally over a nozzle of drying gas is blown or sucked into the drying room. A large number of filters are provided above the gas-permeable plate; Remove dust particles from the drying gas. Because the drying gas is on the side is blown into the drying room through a nozzle, that is The material to be dried does not have the same pressure at all points. It is also Material to be dried is not evenly distributed in the drying room because there is no mixer is provided. A special spatial allocation of the filters for the pressure distribution of the gas escaping from the drying chamber does not occur. A highly effective one It is therefore not possible to dry the material to be dried.
  • an apparatus for drying explosives is known.
  • a moist material to be dried is placed on a fluidized bed in an elongated, closed housing transported.
  • a drying gas is passed through gas inlet openings blown in and escaping through gas outlet openings. Both openings are above the items to be dried.
  • the drying gas only circulates above the items to be dried and does not penetrate them.
  • the gas inlet and - outlet openings are arranged alternately side by side. A highly effective one The items to be dried are not dried.
  • the invention has for its object a mixer-dryer Generic type so that on the one hand a good mixture and on the other hand achieves a highly effective drying of the material becomes.
  • the mixer-dryer shown in the drawing has one in principle cylindrical housing 1 with a horizontal central longitudinal axis 2.
  • the housing 1 is closed at its end faces with end walls 6, 7.
  • the housing 1 is on supports 8, 9 opposite a floor foundation 10 supported.
  • Shaft bearings 11, 12 are attached to the end walls 6, 7, in which one arranged concentrically to the central longitudinal axis 2 Shaft 13 of a mixer 14 is rotatably mounted.
  • the mixer 14 is can be driven in rotation about the axis 2 by means of a motor 15 which is connected via a V-belt drive 16 is coupled to the shaft 13.
  • a material feed nozzle 18, which is on top of the housing 1 is appropriate.
  • the housing 1 opens from the interior 17 a material outlet nozzle 19th
  • Numerous mixing tools are located on the shaft 13 of the mixer 14 20, each consisting essentially of a in the region of the inner wall 21st of the housing 1 mixing blade 22 and one with the Shaft 13 connecting rod 23 exist.
  • the mixing blades 22 are relatively large and in the axial conveying direction 24 and in the direction of rotation 25 of the shaft 13 employed so that they through the feed pipe 18 supplied pourable material 26 in the direction of rotation 25 and Take along or promote in conveying direction 24.
  • In the area of the end walls 6, 7 are attached to the shaft 13 scraper tools 27, 28 by means of of which material 26 adhering to the end walls 6, 7 is stripped off becomes.
  • the mixing blades 22 overlap each other in the direction of the Axis 2 completely, so that all peripheral areas of the inner wall 21st can be swept by the mixing blades 22, whereby the formation of Dead dreams is excluded.
  • the mixer-dryer is a continuously operating push or Throwing mixer in which the material 26 by means of the mixing blades 22 each shifted in the mixed material bed or torn out of it and in a parabolic lane back into the mix bed falls behind.
  • Such push or throw mixers are with 0.5 to 10 times critical speed driven. Under the critical speed is understood the speed of the mixer 14 at which the radial outer ends of the mixing blades 22 gravitational acceleration occurs.
  • the outside Drying gas supply chambers 34, 35 attached, which - as Fig. 1 can be removed is - each over almost half the length of the housing 1 extend, namely from its end wall 6, the material feed nozzle 18 faces up to the material outlet port 19.
  • This Drying gas supply chambers 34, 35 are via perforated plates 36, 37 with the Interior 17 of the housing 1 connected.
  • the perforated plates 36, 37 are partially cylindrical formed and adapted to the inner wall 21 of the housing 1. As can be seen in FIG. 2, they extend approximately symmetrically to vertical center-symmetry plane 38 of the housing 1 by 30 ° each.
  • the Compressed gas supply boxes 34, 35 have on their perforated plates 36 and 37, respectively opposite side each have a drying gas connection 39, 40, to which a compressed gas supply line, not shown, can be connected, can be supplied by the compressed gas according to the flow direction arrow 41 is.
  • a box-shaped structure 43 is attached to the top 42 of the housing 1, which - in the conveying direction 24 - from the material feed connector 18 extends to the rear end wall 7 of the housing 1.
  • a filter box 44 is placed in which - in Conveying direction 24 one behind the other - several cylindrical filters 45 arranged are to a drying gas extraction box placed on the filter box 44 46 are connected.
  • the drying gas exhaust box 46 opens into a drying gas vent 47, through the compressed gas flows out in the outflow direction 48.
  • disagglomeration devices can be used in a known manner 49 in the form of so-called knife mills, which are provided in essentially from an attached to the outside of the housing 1 Motor 50 and a lead into the interior 17 of the housing 1, from the motor 50 high-speed shaft 51 exist on the Knives 52 are attached, by means of which material packings, so-called agglomerates can be crushed.
  • Material 26 is moist and should be dried while mixing will.
  • the compressed gas supply boxes 34, 35 and the perforated plates 36, 37 optionally heated drying gas supplied flows through the mixer 14 loosened material bed 26, and over its full length from the end wall 6 to the overflow weir 30.
  • the drying gas moistened with the moisture of the material 26 occurs in approximately the full length of the housing 1 Filter box 44, where the entrained by the drying gas Material 26 is separated by the filter 45. Passes through the filter 45 only the drying gas loaded with moisture.
  • perforated plates 36, 37 can be of different sizes. Farther the width of a perforated base 36 can vary over the length of the housing 1 change, for example, such a perforated bottom 36, 37 can be trapezoidal be trained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Claims (7)

  1. Malaxeur-sécheur comportant un carter (1) fondamentalement cylindrique et à poste fixe, dans lequel est placé un mélangeur (14) propre à être entraíné en rotation en continu autour de son axe longitudinal médian, et qui est pourvu, par rapport à l'axe longitudinal médian, au niveau d'une extrémité, d'un conduit d'amenée de matière (18) et, à l'extrémité opposée, par rapport à l'axe longitudinal médian, dans le sens d'acheminement (24), d'un conduit d'évacuation de matière (19), ce carter recevant, dans son espace intérieur (17), un lit de matière (26) à sécher, et étant pourvu, dans sa zone de fond (33), d'au moins une chambre d'amenée de gaz de dessiccation (34, 35), qui s'étend sur une partie substantielle de la longueur du carter (1) et qui est raccordée à un branchement de gaz de dessiccation (39, 40) et est reliée, par l'intermédiaire d'un fond (36, 37) perméable aux gaz, à l'espace intérieur (17) du carter (1), tandis qu'il est prévu, dans la zone de son côté supérieur (42), une extraction de gaz, caractérisé en ce que l'extraction de gaz est réalisée sous la forme d'un caisson filtrant (44), de forme approximativement parallélépipédique, s'étendant sur une partie substantielle de la longueur du carter (1), en direction de l'axe longitudinal médian, et relié à l'espace intérieur (17) du carter, plusieurs filtres (45), raccordés à une extraction de gaz de dessiccation (47), étant disposés les uns derrière les autres sur la longueur du carter (1).
  2. Malaxeur-sécheur selon la revendication 1, caractérisé en ce que les filtres (45) sont réalisés de forme très allongée et disposés à peu près verticalement et transversalement à l'axe longitudinal médian (2) du mélangeur (14).
  3. Malaxeur-sécheur selon l'une des revendications 1 ou 2, caractérisé en ce qu'il est réalisé en tant que malaxeur à poussée ou à jet.
  4. Malaxeur-sécheur selon l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu plusieurs chambres d'amenée de gaz de dessiccation (34, 35) successivement les unes derrière les autres dans le sens d'acheminement (24).
  5. Malaxeur-sécheur selon l'une des revendications 1 à 4, caractérisé en ce qu'au moins une chambre d'amenée de gaz de dessiccation (34, 35) est reliée à l'espace intérieur (17) du carter (1) par l'intermédiaire d'un fond (36, 37) réalisé sous la forme d'un fond perforé.
  6. Malaxeur-sécheur selon l'une des revendications 1 à 5, caractérisé en ce qu'il est prévu au moins un dispositif de désagglomération (49).
  7. Malaxeur-sécheur selon l'une des revendications 1 à 6, caractérisé en ce que le fond perméable aux gaz (36, 37) réalisé sous la forme d'au moins un fond perforé, s'étend sur 40° à 90°.
EP93120513A 1993-02-15 1993-12-20 Malaxeur-sécheur Expired - Lifetime EP0611937B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9302136U 1993-02-15
DE9302136U DE9302136U1 (fr) 1993-02-15 1993-02-15

Publications (2)

Publication Number Publication Date
EP0611937A1 EP0611937A1 (fr) 1994-08-24
EP0611937B1 true EP0611937B1 (fr) 1998-10-14

Family

ID=6889417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120513A Expired - Lifetime EP0611937B1 (fr) 1993-02-15 1993-12-20 Malaxeur-sécheur

Country Status (3)

Country Link
EP (1) EP0611937B1 (fr)
DE (2) DE9302136U1 (fr)
ES (1) ES2123610T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7132564B2 (en) 2004-10-07 2006-11-07 Bayer Materialscience Ag Process for preparing cyclic ketones

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712076B1 (fr) * 1993-11-04 1996-01-26 Gwozdz Eugene Séchoir pour produits humides, notamment de boues de station d'épuration.
NO322684B1 (no) 2001-05-16 2006-11-27 Stord Bartz As Fremgangsmate og anordning for torke av limholdige materialer
ES2192980B2 (es) * 2002-01-16 2006-06-01 Baucis, S.A. Mezcladora-secadora-reactor por microondas.
DE50208794D1 (de) * 2002-10-04 2007-01-04 Edwin Eisenegger Vorrichtung zum Behandeln von Schüttgut
NO339254B1 (no) * 2013-05-22 2016-11-21 Multivector As Anordning for virvling og tørking av minst ett fragmentert stoff
EP3482829B1 (fr) 2013-05-22 2020-08-05 Waister AS Dispositif permettant de fluidiser au moins une substance
NO339253B1 (no) * 2013-05-22 2016-11-21 Multivector As Fremgangsmåte og system for behandling av minst ett stoff til et tørket, fragmentert, virvlet sluttprodukt

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE174842C (fr) *
DE125361C (fr) * 1899-10-20 1901-11-23
US1642469A (en) * 1926-07-13 1927-09-13 Compton J Tucker Apparatus for drying hay or other products
US2639515A (en) * 1948-12-16 1953-05-26 Ruth Rand Simon Drier and method
US3456357A (en) * 1968-02-05 1969-07-22 Commercial Solvents Corp Process for continuous automated vibrational drying of explosives and apparatus
HU184671B (en) * 1979-03-21 1984-09-28 Richter Gedeon Vegyeszet Apparatus for drying and granulating wet pastelike and/or fusible materials
DE3024710C2 (de) * 1980-06-30 1982-06-09 Helmut 4740 Oelde Haupt Trockner für rieselfähige Güter
IT8221133V0 (it) * 1982-03-15 1982-03-15 Essiccatoi S P A Caleppio Di S Gruppo essiccatoio-filtro con dispositivo per la pulitura dei filtri.
JPS58168880A (ja) * 1982-03-30 1983-10-05 株式会社栗本鉄工所 伝導受熱型撹拌乾燥機
DE4002099A1 (de) * 1990-01-25 1991-08-01 Draiswerke Gmbh Mischer
DE9106640U1 (fr) * 1991-05-30 1991-07-18 Dietrich Reimelt Kg, 6074 Roedermark, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7132564B2 (en) 2004-10-07 2006-11-07 Bayer Materialscience Ag Process for preparing cyclic ketones

Also Published As

Publication number Publication date
DE9302136U1 (fr) 1993-04-01
EP0611937A1 (fr) 1994-08-24
DE59309062D1 (de) 1998-11-19
ES2123610T3 (es) 1999-01-16

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