EP0062742B1 - Dispositif pour assurer l'étanchéité du joint entre un four rotatif et la tête du four - Google Patents

Dispositif pour assurer l'étanchéité du joint entre un four rotatif et la tête du four Download PDF

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Publication number
EP0062742B1
EP0062742B1 EP82101063A EP82101063A EP0062742B1 EP 0062742 B1 EP0062742 B1 EP 0062742B1 EP 82101063 A EP82101063 A EP 82101063A EP 82101063 A EP82101063 A EP 82101063A EP 0062742 B1 EP0062742 B1 EP 0062742B1
Authority
EP
European Patent Office
Prior art keywords
ring
rotary kiln
ring element
stationary
annular
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
Application number
EP82101063A
Other languages
German (de)
English (en)
Other versions
EP0062742A1 (fr
Inventor
Heinz Ing. Grad. Grachtrup
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0062742A1 publication Critical patent/EP0062742A1/fr
Application granted granted Critical
Publication of EP0062742B1 publication Critical patent/EP0062742B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/24—Seals between rotary and stationary parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/903—Seal for rotating kiln or drum

Definitions

  • the invention relates to a device for sealing the gap between the inlet end of a rotary kiln and a stationary inlet housing with the features according to the preamble of claim 1.
  • the slidable ring has a certain axial displaceability in the known designs and is also pressed by the pressure-actuated cylinder in the direction of the inlet end of the rotary kiln.
  • the freedom of movement of the sliding ring is not sufficient to ensure that the two wear surfaces (the to be held on the one hand by the sliding ring and on the other hand by the ring rotating with the rotary kiln) in sealing contact.
  • the invention is therefore based on the object, while avoiding these disadvantages of the known designs, to provide a device of the type mentioned which is distinguished by a particularly large range of motion of the sliding ring and which thus also has a very good length, even when cooled, by rotary tube furnaces of very great length the gap between the inlet end of the rotary kiln and the fixed inlet housing guaranteed.
  • the slidable ring consists of several, preferably two, concentrically arranged and telescopic relative to each other in the axial direction slidable ring elements, of which the inner ring element is supported via the first sealing element on the fixed ring, while that supports the first wear surface of the outer ring element via a second ring-shaped sealing element on the inner ring element.
  • the gap sealing device illustrated in the drawing is provided in the transition area from a stationary inlet housing, of which only the outer wall 1 can be seen in FIG. 1, and the inlet end 2a of a rotary kiln 2, which is only indicated, in order to seal the gap 3 present there from the outside .
  • a fixed ring 4 is fixedly attached, which extends from this wall 1 in the axial direction to the rotary kiln inlet end 2a and which is essentially cylindrical.
  • a circumferential circumferential, outwardly open ring channel 5 is formed, in which an annular sealing element 6 (e.g. asbestos cord or the like) extending over the entire ring circumference. ) is arranged.
  • movable ring 8 On the outside of the fixed ring 4, a non-rotatable, but slidable in the axial direction (double arrow 7) movable ring 8 is arranged.
  • This slidable ring 8 can consist of several concentrically arranged and telescopically relative to each other the ring elements slidably movable in the axial direction; In the illustrated embodiment, this slidable ring 8 consists of an inner ring element 9 and an outer ring element 10 (ie preferably two such ring elements).
  • the inner ring element 9 is supported by a first ring-shaped sealing element 11 on the fixed ring 4, this first sealing element 11 being arranged on the inner circumferential side of the end of this ring element 9 directed against the inlet housing wall 1 in a circumferential, inwardly open ring channel 12.
  • the outer ring element 10 is supported on the outer circumferential side of the inner ring element 9 via a second ring-shaped sealing element 13.
  • This second sealing element 13 is also held in a circumferential ring channel 14 - in this case the outer ring element 10 - which is open towards the inner ring element 9.
  • the outer ring element 10 of the slidable ring 8 carries on its end facing the rotary kiln 2 a first wear surface 15a which is formed by a wear ring 15 which is firmly connected to the outer ring element 10 (e.g. by screwing or riveting).
  • a second wear surface 16a of a second wear ring 16 Opposed to this first wear surface 15a is a second wear surface 16a of a second wear ring 16 which comes into sealing contact therewith, which is held in a rotationally fixed manner by a ring 17, which in turn is attached in a rotationally fixed manner to the inlet end 2a of the rotary kiln 2.
  • the wear rings 15 and 16 are made in the usual way from a suitable material (for example steel ST 37) and either in one piece or - which is generally preferred - from ring segments.
  • a plurality of pressure-medium-actuated cylinders e.g. pneumatic cylinders 18 which act between the inlet housing (wall 1) and the sliding ring 8 and which move the sliding ring 8 towards the inlet end 2a of the rotary kiln 2 press and hold the two wearing surfaces 15a and 16a in sealing contact with each other.
  • the cylinders 18 are carried by the outer ring element 10, in that this outer ring element 10 has an annular disk 19 with a significantly larger outer diameter than the other parts, the cylinders 18 then being fastened (preferably screwed) to the outer circumference of this annular disk 19, that they are supported with the free ends 20a of their piston rods 20 on the outer inlet housing wall 1 or on abutments 21 provided there (correspondingly distributed in the circumferential direction).
  • the cylinders 18 are surrounded by a heat shield 22 at least in their areas facing the rotary kiln 2.
  • a stop device 23 is attached, which limits the maximum pull-out movement of the ring element 10 by interacting with the stop device 23 via its ring channel 14.
  • This stop device 23 can be formed either by a circumferential ring or by a number of relatively short ring sections.
  • the outer ring element 10 has on its outer circumference two mounting joints 24, 25, which make this ring element 10 axially slidable, but non-rotatably via a suspension device 26, 27 on the stationary one Hold the inlet housing wall 1.
  • These mounting joints are expediently attached to the annular disk 19 in two circumferentially approximately opposite regions (as shown in FIG. 2).
  • the suspension devices for the outer ring element 10 are essentially formed by suspension rods 26, 27, which can be adjusted in their effective carrying length - in particular by screws - and are provided with fastening plates 28, 29, which are screwed into the outer inlet housing wall 1 at appropriate points or in can be attached in any other way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)

Claims (7)

1. Dispositif de fermeture hermétique de l'intervalle compris entre l'extrémité d'entrée d'un four tubulaire rotatif et une enveloppe fixe d'admission, ledit dispositif comprenant un anneau fixe monté sur l'enveloppe d'admission, un anneau coulissant monté sur l'anneau fixe, immobile en rotation mais capable de translation dans la direction de l'axe, cet anneau coulissant prenant appui sur l'anneau fixe par l'intermédiaire d'au moins un premier élément annulaire d'étanchéité et supportant une première surface d'usure sur sa face extrême tournée vers le four tubulaire, ledit dispositif comprenant par ailleurs un anneau rotatif fixé sur l'extrémité d'entrée du four tubulaire et supportant une seconde surface d'usure entrant en contact d'étanchéité avec la première, des vérins actionnés par un fluide sous pression et prévus entre l'enveloppe d'admission et l'anneau coulissant repoussant ce dernier vers l'extrémité d'entrée du four tubulaire en maintenant les deux surfaces d'usure en contact d'étanchéité l'une avec l'autre, dispositif caractérisé en ce que l'anneau coulissant (8) se compose de plusieurs, de préférence de deux éléments annulaires concentriques (9, 10) qui peuvent coulisser télescopiquement l'un par rapport à l'autre dans la direction de l'axe et dont l'élément annulaire intérieur (9) prend appui sur l'anneau fixe (4) par l'intermédiaire du premier élément d'étanchéité (11), tandis que l'élément annulaire extérieur (10), qui supporte la première surface d'usure (15a), prend appui sur l'élément annulaire intérieur par l'intermédiaire d'un second élément annulaire d'étanchéité (13).
2. Dispositif selon la revendication 1, caractérisé en ce qu'un autre élément annulaire d'étanchéité (6), qui assure l'étanchéité sur l'élément annulaire intérieur (9), est prévu sur le côté extérieur de la circonférence de l'extrémité libre (4a), orientée vers le four tubulaire rotatif (2), de l'anneau fixe (4).
3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que tous les éléments annulaires d'étanchéité (6, 11, 13) sont retenus dans des canaux annulaires (5, 12, 14) continus dans la direction de la circonférence, le canal (5) situé sur l'extrémité libre de l'anneau fixe (4) et le canal annulaire (12) situé sur le côté intérieur de l'élément annulaire intérieur (9) coopérant l'un avec l'autre pour former également deux butées qui limitent le déplacement axial maximal vers l'extérieur de l'élément annulaire intérieur sur l'anneau fixe.
4. Dispositif selon au moins l'une des revendications précédentes, caractérisé en ce qu'un dispositif de butée (23), qui limite le déplacement axial maximal vers l'extérieur de l'élément annulaire extérieur (10), est placé sur le côté extérieur de la circonférence de l'extrémité (9a), orienté vers le four tubulaire rotatif (2), de l'élément annulaire intérieur (9).
5. Dispositif selon l'une au moins des revendications précédentes, caractérisé en ce que l'élément extérieur (10) de l'anneau coulissant (8) comporte sur sa circonférence des articulations de retenue (24, 25) qui lui autorisent sa liberté de coulissement axial, mais qui lui interdisent de tourner sur l'enveloppe fixe d'admission (1) par l'intermédiaire de dispositifs de suspension (26, 27).
6. Dispositif selon la revendication 5, caractérisé en ce que les articulations de retenue (24, 25) sont montées sur un disque annulaire (19) de l'élément annulaire extérieur (10) qui a un diamètre extérieur élargi et qui supporte par ailleurs des vérins (18) actionnés par un fluide sous pression, répartis uniformément à la circonférence et dont l'extrémité libre de la tige (20a) de piston prend appui sur la cloison extérieure (1) de l'enveloppe d'admission.
7. Dispositif selon les revendications 5 et 6, caractérisé en ce que deux articulations de retenue (24, 25) sont montées en des emplacements sensiblement opposés diamétralement de la circonférence du disque annulaire (19) de l'élément annulaire extérieur (10) et des dispositifs de suspension de l'élément annulaire extérieur (10) sont constitués de barres (26, 27), dont la longueur efficace de portée est réglable, ainsi que de plaques de fixation (28, 29).
EP82101063A 1981-04-10 1982-02-12 Dispositif pour assurer l'étanchéité du joint entre un four rotatif et la tête du four Expired EP0062742B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813114695 DE3114695A1 (de) 1981-04-10 1981-04-10 Vorrichtung zur abdichtung des spaltes zwischen drehrohrofen und einlaufgehaeuse
DE3114695 1981-04-10

Publications (2)

Publication Number Publication Date
EP0062742A1 EP0062742A1 (fr) 1982-10-20
EP0062742B1 true EP0062742B1 (fr) 1984-09-19

Family

ID=6129945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101063A Expired EP0062742B1 (fr) 1981-04-10 1982-02-12 Dispositif pour assurer l'étanchéité du joint entre un four rotatif et la tête du four

Country Status (5)

Country Link
US (1) US4457520A (fr)
EP (1) EP0062742B1 (fr)
DE (2) DE3114695A1 (fr)
ES (1) ES511228A0 (fr)
ZA (1) ZA821134B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102135180A (zh) * 2011-02-17 2011-07-27 天津水泥工业设计研究院有限公司 回转筒式设备进出料端密封装置

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123097B (en) * 1982-06-03 1986-01-22 British Nuclear Fuels Ltd Rotary kiln sealing assemblies
US4728289A (en) * 1987-03-10 1988-03-01 Westinghouse Electric Corp. Axial seal system for rotary combustor
DE3830678A1 (de) * 1988-09-09 1990-03-22 Veba Oel Entwicklungs Gmbh Drehrohr
US4950155A (en) * 1989-11-16 1990-08-21 Westinghouse Electric Corp. Replaceable longitudinal seal for a rotary combustor
US4993940A (en) * 1990-06-06 1991-02-19 Westinghouse Electric Corp. Scraper for an axial seal in a rotary combustor
US5112222A (en) * 1991-05-01 1992-05-12 Westinghouse Electric Corporation Debris tolerant seal
US5567380A (en) * 1994-09-30 1996-10-22 Hoover; Donald P. Rotary retort heat treating furnace seals
US5927970A (en) * 1996-10-02 1999-07-27 Onsite Technology, L.L.C. Apparatus for recovering hydrocarbons from solids
US6478841B1 (en) 2001-09-12 2002-11-12 Techint Technologies Inc. Integrated mini-mill for iron and steel making
US20040222590A9 (en) * 2001-12-11 2004-11-11 Loewenstein David Allen Poker game
US7306057B2 (en) * 2002-01-18 2007-12-11 Varco I/P, Inc. Thermal drill cuttings treatment with weir system
US20030136747A1 (en) * 2002-01-18 2003-07-24 Wood Bradford Russell Soil cleaning systems and methods
DE102022209740A1 (de) 2022-09-16 2024-03-21 Thyssenkrupp Ag Dichtung für einen Drehrohrofen
WO2024056721A1 (fr) 2022-09-16 2024-03-21 thyssenkrupp Polysius GmbH Joint pour four rotatif
LU103007B1 (de) 2022-09-16 2024-03-18 Thyssenkrupp Ag Dichtung für einen Drehrohrofen

Family Cites Families (19)

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DD82808A (fr) *
DE391349C (de) * 1922-09-28 1924-03-06 Bryan Laing Gasdichte Abdichtung fuer umlaufende Trocken- und Brenntrommeln, Retorten u. dgl.
US1620989A (en) * 1926-06-14 1927-03-15 Allis Chalmers Mfg Co Packing
DE527306C (de) * 1927-03-15 1931-06-16 Arno Andreas Abdichtung von Trockentrommeln, Drehoefen u. dgl. gegenueber dem sie umgebenden Mauerwerk
DE489486C (de) * 1927-05-20 1930-09-23 Fried Krupp Grusonwerk Akt Ges Dichtung fuer in einem feststehenden Gehaeuse umlaufende Trommeln, wie Drehrohroefen
DE626017C (de) * 1933-12-21 1936-02-19 Fried Krupp Grusonwerk Akt Ges Drehrohrdichtung
US2253098A (en) * 1940-08-03 1941-08-19 Link Belt Co Rotary kiln or drier
GB688240A (en) * 1950-04-15 1953-03-04 Paul Blanchard Improvements in and relating to joints for rotary furnaces
DE1027024B (de) * 1952-04-23 1958-03-27 Degussa Einrichtung zur Abdichtung bewegter Teile, insbesondere an Drehrohren
DE1222843B (de) * 1961-05-09 1966-08-11 Huettenwerk Oberhausen Ag Ofenabdichtung fuer Drehrohroefen
DE1202207B (de) * 1964-04-16 1965-09-30 Beteiligungs & Patentverw Gmbh Vorrichtung zur Abdichtung der feststehenden gegen die beweglichen Teile eines Drehrohrofens
DE1280475B (de) * 1965-05-19 1968-10-17 Miag Muehlenbau & Ind Gmbh Vorrichtung zum Abdichten von Drehrohroefen gegenueber dem feststehenden Einlaufgehaeuse
DE2015456A1 (en) * 1970-04-01 1971-10-21 Wedag Westfalia Dinnendahl Non-contacting seal for rotating kiln furnaces
FR2086706A5 (fr) * 1970-04-07 1971-12-31 Fives Lille Cail
US3837658A (en) * 1973-01-05 1974-09-24 Beloit Corp Rotary steam seal for dryer drum
US3940239A (en) * 1974-12-16 1976-02-24 Allis-Chalmers Corporation Rotary reducing kiln seal
US3980128A (en) * 1975-06-02 1976-09-14 The Air Preheater Company, Inc. Rotor post seal
DE2741738C3 (de) * 1977-09-16 1981-04-02 Smit Ovens Nijmegen B.V., Nijmegen Stirn-Mantelgleitdichtung zwischen einer ortsfesten Haube und einem Drehrohrofenende
US4193756A (en) * 1978-03-08 1980-03-18 Tosco Corporation Seal assembly and method for providing a seal in a rotary kiln

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102135180A (zh) * 2011-02-17 2011-07-27 天津水泥工业设计研究院有限公司 回转筒式设备进出料端密封装置
CN102135180B (zh) * 2011-02-17 2015-06-24 中材装备集团有限公司 回转筒式设备进出料端密封装置

Also Published As

Publication number Publication date
ES8304657A1 (es) 1983-03-01
DE3114695A1 (de) 1982-10-28
EP0062742A1 (fr) 1982-10-20
ES511228A0 (es) 1983-03-01
ZA821134B (en) 1983-01-26
US4457520A (en) 1984-07-03
DE3260751D1 (en) 1984-10-25

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