EP0447427A1 - Dispositif de sechage et de triage pour materiaux granuleux en vrac. - Google Patents

Dispositif de sechage et de triage pour materiaux granuleux en vrac.

Info

Publication number
EP0447427A1
EP0447427A1 EP90900093A EP90900093A EP0447427A1 EP 0447427 A1 EP0447427 A1 EP 0447427A1 EP 90900093 A EP90900093 A EP 90900093A EP 90900093 A EP90900093 A EP 90900093A EP 0447427 A1 EP0447427 A1 EP 0447427A1
Authority
EP
European Patent Office
Prior art keywords
drum
inner drum
sieve
bulk material
feed deck
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
EP90900093A
Other languages
German (de)
English (en)
Other versions
EP0447427B1 (fr
Inventor
Heinz Uffeln
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.)
Wibau GmbH
Original Assignee
Wibau 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 Wibau GmbH filed Critical Wibau GmbH
Priority to AT90900093T priority Critical patent/ATE87682T1/de
Publication of EP0447427A1 publication Critical patent/EP0447427A1/fr
Application granted granted Critical
Publication of EP0447427B1 publication Critical patent/EP0447427B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
    • 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

Definitions

  • the invention relates to a drying and sorting device for granular bulk material with an essentially horizontally mounted, rotatable inner drum which can be operated by means of a burner arrangement and can be loaded with the bulk material from one end by means of an input device.
  • which moves during the drum rotation in the inner drum in the axial direction to the other end of the drum towards at least one discharge opening, further with an outer sieve drum surrounding the inner drum and firmly connected to it, which as a drum jacket in the axial direction adjoining sieve jacket sections with which the at least has a discharge end having a discharge opening to the drum end adjacent to the input device and gradually increasing mesh size and with a coaxially fastened in the annular space between the inner drum and the outer sieve drum and with circumferential ones.
  • Drum-shaped, perforated feed deck which extends from the drum end having the at least one discharge opening in the axial direction at least over the axial length of the sieve jacket section having the smallest mesh size in the direction of the entry end of the drum.
  • the object of the invention is to achieve a drying and sorting device of the type described in the introduction in such a way that a very precise sorting according to the grain sizes of the bulk material is achieved without the basic structure of the sorting device considered here being changed, complicated and must be made more expensive.
  • the perforation of the feed deck is selected to be several times larger than the mesh size of the sieve jacket section of the smallest mesh size and is at least so large that a proportion of more than 50% of the bulk material is caused by the perforation of the opening - Gabedecks falls on the at least one Siebmantelab ⁇ section with the smallest mesh size.
  • the entire volume of the dried bulk material holding the inner drum is thus applied to the feed deck, and the perforation of the feed deck causes the fraction of the bulk material with the smallest grain size and in any case also portions of the fraction with larger ones to fall in the area of the sieve jacket section with the smallest mesh size Grain sizes according to the perforation of the feed deck. At the same time it is ensured due to the presence of the check deck.
  • the feed deck can also have the shape of a plurality of drum-shaped screen decks which are coaxial with one another, and similar considerations apply to their design with regard to mesh size or perforation and also with regard to axial extension, as for the single-layer feed deck mentioned here and described in detail below.
  • the loading deck can differ from the discharge opening or.
  • the discharge openings of the inner drum also extend in the axial direction towards the entry side of the drum over further sieve jacket sections with a correspondingly larger mesh size, corresponding considerations apply, as was previously the case in connection with the discussion of the sorting result in the sieve jacket section with the smallest mesh size of his sieve was discussed.
  • the bulk material to be dried or sorted can be transported within the inner drum by screw flights, by blading or by inclining the axis of rotation of the drum from the entry side to the side in the manner familiar to the person skilled in the art - Carrying side of the inner drum.
  • An inclined axis of rotation also corresponds to a conical design of the inner drum.
  • FIG. 1 shows an inner drum 4 which is rotatable about a horizontal axis and is supported by wheel flanges 1 and 2 on rollers 3 fixed to the frame and which is shown cut open in the lower half of the drawing figure.
  • An input device indicated schematically at 5 is provided on the entry side of the inner drum 4.
  • ⁇ SET LATT Via which the bulk material to be dried and sorted is conveyed into the interior of the inner drum 4 and migrates from the entry side in the axial direction to the opposite end of the drum, on which a firing arrangement 6 is provided which passes through the closed end on the front side extends through the drum and directs its flame in the schematically indicated manner towards the entry end of the inner drum 4.
  • a plurality of discharge openings 7 are provided on the periphery thereof, via which the dried granular bulk material leaves the inner drum 4 in order to fall into a collecting chamber 8 which is fastened to the inner drum and surrounds it and which has a Circumferential perforation 9 corresponding to the maximum grain size of the bulk material treated has a connection to a discharge duct 10 which is part of the stationary housing 11 of the device.
  • the discharge duct 10 represents the lower mouth of a housing chamber 12 which defines the circumferential collecting chamber 8 of the drum.
  • the inner drum 4 is firmly connected via radial supports to a coaxial sieve drum 13 surrounding the inner drum, which consists of a series of adjoining sieve jacket sections 14, 15, 16, 17 and 18 with a gradually increasing mesh size of the inner drum 4 from the discharge end to the entry end Sieves.
  • the collecting chamber 8 rotating with the inner drum is connected to the annular space between the inner drum 4 and the sieve drum 13 via an annular gap 19 which opens onto a drum-shaped perforated feed deck 20 surrounding the inner drum, which coaxial in the annular space between the inner drum 4 and the sieve drum 13 is fastened and rotates with the entire drum arrangement.
  • the feed deck 20 extends from the annular gap 19 in the direction of the entry end of the inner drum 4 over the axial length of the sieve jacket sections 14 and 15. According to a modification in the coaxial direction, the feed deck can also be other
  • the perforation of the drum-shaped feed deck 20 is selected to be several times larger than the mesh width of the screen jacket section 14.
  • the perforation of the feed deck 20 is preferably so large that more than 50% of the bulk material leaving the inner drum 4 falls from the feed deck onto the screen jacket sections 14 and 15 when the drum arrangement rotates and when the entire device is set so that all bulk material discharged from the inner drum 4 into the collecting chamber 8 reaches the space between the inner drum 4 and the loading deck 20 from the collecting chamber via the annular gap 19.
  • the bulk material is conveyed in the annular space between the inner drum 4 and the feed deck 20 in the axial direction in accordance with the arrows .21 drawn in the drawing by screw flights 22 built into the annular space mentioned, which are in the axial direction in Connect the screw flights 23 to the annular space between the inner drum 4 and the sieve jacket sections 16, 17 and 18 for the further conveyance of the bulk material.
  • removal shafts 24 to 28 are formed in the housing 11 for the individual grain sizes corresponding to the mesh size of the sieve jacket sections.
  • REPLACEMENT LEAF lead to the extraction openings provided at the bottom of the shaft.
  • a first changeover element 29 in the discharge shaft 10 causes all the bulk material leaving the inner drum 4 to remain in the circumferential collecting chamber 8 and only through the annular gap 19 to the annular space between the The inner drum 4 and the feed deck 20 migrate in order to load the sieve jacket sections from there in the manner indicated above. If the changeover element 29 is folded up, the circulating collecting chamber 8 empties into the discharge shaft 10 and, depending on the position of a second changeover element 30, can either be passed via the removal channel 31 or the shunt channel 32.
  • a third changeover element 33 is located in an oversize removal shaft 34 formed on the discharge side of the sieve drum 13, the bulk material fraction with oversize size being added in one position of the changeover element 33 to the bulk material fraction of the removal shaft 28 corresponding to the mesh size of the sieve jacket section 18 or, in the other position of the changeover element 33, is guided over a discharge shaft 35, to which a portion of the bulk material fraction from the removal shaft 28 can also be fed as an overflow via the channel 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Dans le dispositif décrit, les matériaux se déplacent d'une extrémité d'entrée vers une extrémité de décharge d'un tambour intérieur rotatif chauffé. Ils se déplacent ensuite dans la direction opposée depuis l'extrémité de décharge en passant par un cribleur entourant coaxialement le tambour intérieur et constitué de sections de criblage (14-18) d'une ouverture à croissance incrémentielle. L'efficacité du triage est sensiblement améliorée si l'espace annulaire entre le tambour intérieur (4) et le cribleur circonvoisin (13) comprend, au moins dans la région de la section d'enveloppe de criblage présentant la plus faible ouverture (14), une plate-forme de chargement (20) coaxiale en forme de tambour, possédant une région ajourée avec des ouvertures sensiblement plus grandes que celles de la section d'enveloppe de criblage avec la plus faible ouverture (14), de sorte que de préférence plus de 50 % de la totalité des matériaux en vrac séchés chargés sur la plate-forme de chargement tombent à travers les perforations de cette dernière.
EP90900093A 1988-12-07 1989-12-02 Dispositif de sechage et de triage pour materiaux granuleux en vrac Expired - Lifetime EP0447427B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90900093T ATE87682T1 (de) 1988-12-07 1989-12-02 Trocknungs- und sortiereinrichtung fuer koerniges schuettgut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3841230 1988-12-07
DE3841230A DE3841230A1 (de) 1988-12-07 1988-12-07 Trocknungs- und sortiereinrichtung fuer koerniges schuettgut

Publications (2)

Publication Number Publication Date
EP0447427A1 true EP0447427A1 (fr) 1991-09-25
EP0447427B1 EP0447427B1 (fr) 1993-03-31

Family

ID=6368659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90900093A Expired - Lifetime EP0447427B1 (fr) 1988-12-07 1989-12-02 Dispositif de sechage et de triage pour materiaux granuleux en vrac

Country Status (4)

Country Link
EP (1) EP0447427B1 (fr)
AU (1) AU4655489A (fr)
DE (2) DE3841230A1 (fr)
WO (1) WO1990006400A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121585C1 (fr) * 1991-06-29 1992-08-06 Lintec Gmbh & Co Kg, 2114 Hollenstedt, De
DE19628437C2 (de) * 1996-07-15 1999-05-12 Wiegand Thomas Einrichtung und Verfahren zur Klassierung und knautschenden Verringerung von Partikelgrößen eines Granulatgemisches
FI107176B (fi) * 1999-01-08 2001-06-15 Saarijaerven Seudun Yrityspalv Kiviaineksen lämmitysyksikkö
CN1978072A (zh) * 2005-12-08 2007-06-13 琳得科有限及两合公司 用于粒状材料分级的滚筒筛
CN115069722B (zh) * 2022-06-17 2024-01-30 中建三局四川建筑装备有限公司 一种集装箱式一体化建筑垃圾再利用机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191503815A (en) * 1915-03-10 1915-11-25 David Thomas Plant Improvements in Rotary Screens for Screening Broken Stone or other Material.
AT384562B (de) * 1982-09-22 1987-12-10 Voest Alpine Ag Siebtrommel
DE3320682A1 (de) * 1983-06-08 1984-12-13 Linnhoff & Thesenfitz Maschinenbau GmbH, 2090 Winsen Vorrichtung zum aufbereiten von strassendeckenbelaegen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9006400A1 *

Also Published As

Publication number Publication date
WO1990006400A1 (fr) 1990-06-14
DE58903985D1 (de) 1993-05-06
DE3841230A1 (de) 1990-06-21
AU4655489A (en) 1990-06-26
EP0447427B1 (fr) 1993-03-31

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