EP1827701B1 - Inlet tube of a centrifuge - Google Patents

Inlet tube of a centrifuge Download PDF

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Publication number
EP1827701B1
EP1827701B1 EP05782472A EP05782472A EP1827701B1 EP 1827701 B1 EP1827701 B1 EP 1827701B1 EP 05782472 A EP05782472 A EP 05782472A EP 05782472 A EP05782472 A EP 05782472A EP 1827701 B1 EP1827701 B1 EP 1827701B1
Authority
EP
European Patent Office
Prior art keywords
centrifuge
inlet tube
centrifuge according
shell
support shell
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.)
Active
Application number
EP05782472A
Other languages
German (de)
French (fr)
Other versions
EP1827701A1 (en
Inventor
Horst Dietschreit
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.)
Siteg Siebtechnik GmbH
Siebtechnik GmbH
Original Assignee
Siteg Siebtechnik GmbH
Siebtechnik 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 Siteg Siebtechnik GmbH, Siebtechnik GmbH filed Critical Siteg Siebtechnik GmbH
Priority to PL05782472T priority Critical patent/PL1827701T3/en
Publication of EP1827701A1 publication Critical patent/EP1827701A1/en
Application granted granted Critical
Publication of EP1827701B1 publication Critical patent/EP1827701B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor

Definitions

  • the invention relates to a centrifuge, in particular a Siebschnecken-, thrust or vibrating centrifuge, with an inlet pipe which passes through the front door of the centrifuge and opens with its inner end in a feed space of the rotating centrifuge parts.
  • centrifuges are from the GB 720 919 A and the DE 19 39 211 A1 known. It is also known to flange the inlet pipe of a centrifuge on one side and manufacture in mackragender execution of metal. In larger centrifuges, especially in Siebschnecken-, thrust and vibrating centrifuges, the material of the inlet pipe, in particular at the Flanschanitati and the welds, significantly burdened, so that it can come after a short time to cracking. This is also due to the low positional stability of the free-standing length of the inlet pipe, which generates extreme loads at the joints.
  • the object of the invention is to improve a centrifuge of the type mentioned above so that the inlet pipe is mechanically highly resilient in simple and inexpensive production and allows easy replacement with little weight.
  • the inlet pipe made of plastic, in particular made of polyethylene and is supported by a tray.
  • Such an inlet pipe of a centrifuge allows a simple and inexpensive production.
  • the tray leads to a high positional stability, wherein the vibrations caused by mechanical loads are not safely absorbed by the inlet pipe but by the tray. Connections of the inlet pipe are mechanically hardly loaded and the inlet pipe is easily interchangeable without hoists.
  • the upper clamping shell additionally forms an outer wear protection in the solids space.
  • the inlet pipe 1 of a centrifuge in particular a Siebschnecken-, thrust or vibrating centrifuge has an obliquely extending pipe part 2 of a polyethylene standard pipe.
  • a vertical inlet pipe piece 3 of the same diameter made of a polyethylene standard pipe is welded in a simple angular connection.
  • a polyurethane lining 4 a Inside the pipe part 2 and the inlet pipe section 3 is a polyurethane lining 4 a.
  • the inclined tube part 2 is in a lower shell-shaped support member, i. a support shell 5 is mounted, which is fastened via a vertical flange 6 in the front door of a centrifuge, in particular a Siebschnecken-, thrust or vibrating centrifuge.
  • the support shell 5 preferably projects beyond the front door on both sides, so that the obliquely extending pipe part 2 of the inlet pipe penetrates the front door.
  • the support member (support shell) 5 is made of metal and the inlet pipe is inclined, the inclined tube part 2 is covered by a clamping shell 7 having side flanges, which is fastened to flanges of the support member (support shell) 5 by fixing bolt 8 is screwed in particular.
  • On the inside of the clamping shell 7 protrude downwards position bolts 9, which are fitted in openings 10 at the top of the inclined part 2, so that after clamping the shell 7, the inlet pipe is securely held and positioned.
  • the inlet pipe or the pipe part 2 may be held on the support part or the support shell 5 by a clamping or tensioning device having tension bands, tensioning cables and / or tensioning wires.

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  • Centrifugal Separators (AREA)

Abstract

An inlet pipe (1) for a centrifuge especially a sieve worm or oscillating centrifuge, comprises an inner end which joins onto the delivery area of the rotating centrifuge, and the pipe passes through the front door of the centrifuge. The pipe consists of plastic, especially polyethylene, and is supported by a carrier, especially a shell section. The latter is covered by a clamping or tensioning shell made of metal.

Description

Die Erfindung betrifft eine Zentrifuge insbesondere eine Siebschnecken-, Schub- oder Schwingzentrifuge, mit einem Einlaufrohr das durch die Fronttür der Zentrifuge hindurchtritt und mit seinem inneren Ende in einem Aufgaberaum der rotierenden Zentrifugenteile mündet.The invention relates to a centrifuge, in particular a Siebschnecken-, thrust or vibrating centrifuge, with an inlet pipe which passes through the front door of the centrifuge and opens with its inner end in a feed space of the rotating centrifuge parts.

Solche Zentrifugen sind aus der GB 720 919 A und der DE 19 39 211 A1 bekannt. Auch ist es bekannt, das Einlaufrohr einer Zentrifuge einseitig angeflanscht und in freikragender Ausführung aus Metall zu fertigen. Bei größeren Zentrifugen, insbesondere bei Siebschnecken-, Schub- und Schwingzentrifugen, wird das Material des Einlaufrohres, insbesondere an der Flanschanbindung und den Schweißstellen, erheblich belastet, so dass es dort nach kurzer Zeit zu Rissbildungen kommen kann. Dies liegt auch an der geringen Lagestabilität der freikragenden Länge des Einlaufrohrs, die extreme Belastungen an den Verbindungsstellen erzeugt.Such centrifuges are from the GB 720 919 A and the DE 19 39 211 A1 known. It is also known to flange the inlet pipe of a centrifuge on one side and manufacture in freikragender execution of metal. In larger centrifuges, especially in Siebschnecken-, thrust and vibrating centrifuges, the material of the inlet pipe, in particular at the Flanschanbindung and the welds, significantly burdened, so that it can come after a short time to cracking. This is also due to the low positional stability of the free-standing length of the inlet pipe, which generates extreme loads at the joints.

Zudem ist es aus der DE 21 50 605 A1 an sich bekannt, das Einlaufrohr einer Zentrifuge durch ein Tragteil zu stützen.Moreover, it is from the DE 21 50 605 A1 known per se, to support the inlet pipe of a centrifuge by a support member.

Aufgabe der Erfindung ist es, eine Zentrifuge der eingangs genannten Art so zu verbessern, dass das Einlaufrohr bei einfacher und preiswerter Herstellung mechanisch hoch belastbar ist und bei geringem Gewicht ein einfaches Auswechseln ermöglicht.The object of the invention is to improve a centrifuge of the type mentioned above so that the inlet pipe is mechanically highly resilient in simple and inexpensive production and allows easy replacement with little weight.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Einlaufrohr aus Kunststoff insbesondere aus Polyethylen gefertigt ist und von einer Tragschale gestützt ist.This object is achieved in that the inlet pipe made of plastic, in particular made of polyethylene and is supported by a tray.

Ein solches Einlaufrohr einer Zentrifuge ermöglicht eine einfache und preiswerte Herstellung. Die Tragschale führt zu einer hohen Lagestabilität, wobei die durch Schwingungen hervorgerufenen mechanischen Belastungen nicht vom Einlaufrohr sondern von der Tragschale sicher aufgenommen werden. Verbindungen des Einlaufrohres werden mechanisch kaum belastet und das Einlaufrohr ist einfach ohne Hebezeuge auswechselbar.Such an inlet pipe of a centrifuge allows a simple and inexpensive production. The tray leads to a high positional stability, wherein the vibrations caused by mechanical loads are not safely absorbed by the inlet pipe but by the tray. Connections of the inlet pipe are mechanically hardly loaded and the inlet pipe is easily interchangeable without hoists.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen aufgeführt. Hierbei bildet die obere Klemmschale neben ihrer Haltefunktion zusätzlich einen äußeren Verschleißschutz im Feststoffraum.Advantageous embodiments of the invention are listed in the subclaims. In addition to its holding function, the upper clamping shell additionally forms an outer wear protection in the solids space.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung perspektivisch dargestellt und wird im folgenden näher beschrieben. Es zeigen

Fig. 1
das Einlaufrohr mit Tragschale und Klemmschale,
Fig. 2
die Tragschale,
Fig. 3
das Einlaufrohr ohne Tragschale und Klemmschale,
Fig. 4
die Klemmschale.
An embodiment of the invention is shown in perspective in the drawing and will be described in more detail below. Show it
Fig. 1
the inlet pipe with support shell and clamping shell,
Fig. 2
the tray,
Fig. 3
the inlet pipe without tray and clamping shell,
Fig. 4
the clamping cup.

Das Einlaufrohr 1 einer Zentrifuge insbesondere einer Siebschnecken-, Schub- oder Schwingzentrifuge weist ein schräg verlaufendes Rohrteil 2 aus einem Polyethylen-Standardrohr auf. Am oberen äußeren Ende ist am Rohrteil 2 ein senkrechtes Einlaufrohrstück 3 gleichen Durchmessers aus einem Polyethylen-Standardrohr in einer einfachen Winkelverbindung angeschweißt. Im Inneren des Rohrteiles 2 und des Einlaufrohrstücks 3 liegt eine Polyurethanauskleidung 4 ein.The inlet pipe 1 of a centrifuge, in particular a Siebschnecken-, thrust or vibrating centrifuge has an obliquely extending pipe part 2 of a polyethylene standard pipe. At the upper outer end of the pipe part 2, a vertical inlet pipe piece 3 of the same diameter made of a polyethylene standard pipe is welded in a simple angular connection. Inside the pipe part 2 and the inlet pipe section 3 is a polyurethane lining 4 a.

Das schräg verlaufende Rohrteil 2 ist in einem unteren schalenförmigen Tragteil, d.h. einer Tragschale 5 gelagert, die über ein senkrechtes Flanschteil 6 in der Fronttür einer Zentrifuge insbesondere einer Siebschnecken-, Schub- oder Schwingzentrifuge befestigt ist. Die Tragschale 5 überragt vorzugsweise zu beiden Seiten die Fronttür, so dass das schräg verlaufende Rohrteil 2 des Einlaufrohrs die Fronttür durchdringt.The inclined tube part 2 is in a lower shell-shaped support member, i. a support shell 5 is mounted, which is fastened via a vertical flange 6 in the front door of a centrifuge, in particular a Siebschnecken-, thrust or vibrating centrifuge. The support shell 5 preferably projects beyond the front door on both sides, so that the obliquely extending pipe part 2 of the inlet pipe penetrates the front door.

Das Tragteil (Tragschale) 5 besteht aus Metall und bei einliegendem Einlaufrohr ist das schräg verlaufende Rohrteil 2 von einer Klemmschale 7 überdeckt, die seitliche Flansche aufweist, die auf Flanschen des Tragteils (Tragschale) 5 durch Fixierbolzen 8 befestigt insbesondere angeschraubt ist. Auf der Innenseite der Klemmschale 7 ragen nach unten Positionsbolzen 9 vor, die in Öffnungen 10 an der Oberseite des schräg verlaufenden Teils 2 eingepasst werden, so dass nach dem Festklemmen der Schale 7 das Einlaufrohr sicher gehalten und positioniert ist.The support member (support shell) 5 is made of metal and the inlet pipe is inclined, the inclined tube part 2 is covered by a clamping shell 7 having side flanges, which is fastened to flanges of the support member (support shell) 5 by fixing bolt 8 is screwed in particular. On the inside of the clamping shell 7 protrude downwards position bolts 9, which are fitted in openings 10 at the top of the inclined part 2, so that after clamping the shell 7, the inlet pipe is securely held and positioned.

Statt oder zusätzlich zur Klemmschale 7 kann das Einlaufrohr bzw. das Rohrteil 2 an dem Tragteil bzw. der Tragschale 5 durch eine Klemm- oder Spannvorrichtung gehalten sein, die Spannbänder, Spannseile und/oder Spanndrähte aufweist.Instead of or in addition to the clamping shell 7, the inlet pipe or the pipe part 2 may be held on the support part or the support shell 5 by a clamping or tensioning device having tension bands, tensioning cables and / or tensioning wires.

Claims (15)

  1. Centrifuge, in particular a worm-screen centrifuge, pusher centrifuge or vibratory centrifuge, comprising an inlet tube which extends through the front door of the centrifuge and opens with the inner end of said tube into a feed chamber of the rotating centrifuge parts, characterised in that the inlet tube (1) is made from plastics and is supported by a support shell (5).
  2. Centrifuge according to claim 1, characterised in that the inlet tube (1) is made from polyethylene.
  3. Centrifuge according to claim 1 or 2, characterised in that the inlet tube has an obliquely extending tube portion (2) which forms the inner end of said inlet tube and is supported by the support shell (5).
  4. Centrifuge according to one of the preceding claims, characterised in that the support shell (5) is mounted in the front door.
  5. Centrifuge according to one of the preceding claims, characterised in that the support shell (5) extends at least over part of the length of the inlet tube (1).
  6. Centrifuge according to one of the preceding claims, characterised in that the support shell (5) is covered by a clamping or tensioning apparatus.
  7. Centrifuge according to claim 6, characterised in that the support shell (5) is covered by a clamping shell (7).
  8. Centrifuge according to one of the preceding claims, characterised in that the support shell (5) is made from metal.
  9. Centrifuge according to claim 7, characterised in that the clamping shell (7) is made from metal.
  10. Centrifuge according to one of the claims 7 to 9, characterised in that the clamping shell (7) is fastened to the support shell (5) by fixing bolts (8).
  11. Centrifuge according to one of the claims 7 to 10, characterised in that the clamping shell (7) has, in the upper region thereof, positioning pins (9) which engage in apertures (10) of the inlet tube.
  12. Centrifuge according to one of the claims 6 to 11, characterised in that fastened to the support shell (5) is a flange part (6) which can be fastened to the front door.
  13. Centrifuge according to one of the preceding claims, characterised in that the inlet tube (1) comprises, at the outer end thereof, an upwardly extending inlet tube portion (3) which is made from plastics and is welded on.
  14. Centrifuge according to claim 13, characterised in that the inlet tube portion (3) is made from polyethylene.
  15. Centrifuge according to one of the preceding claims, characterised in that the inlet tube (1) has a lining (4) made from polyurethane.
EP05782472A 2004-11-30 2005-08-27 Inlet tube of a centrifuge Active EP1827701B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05782472T PL1827701T3 (en) 2004-11-30 2005-08-27 Inlet tube of a centrifuge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004057861A DE102004057861A1 (en) 2004-11-30 2004-11-30 Inlet pipe for a centrifuge, comprises an inner end which joins the delivery area of the rotating centrifuge, and a carrier section
PCT/EP2005/009262 WO2006058568A1 (en) 2004-11-30 2005-08-27 Inlet tube of a centrifuge

Publications (2)

Publication Number Publication Date
EP1827701A1 EP1827701A1 (en) 2007-09-05
EP1827701B1 true EP1827701B1 (en) 2010-12-22

Family

ID=35207682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05782472A Active EP1827701B1 (en) 2004-11-30 2005-08-27 Inlet tube of a centrifuge

Country Status (8)

Country Link
EP (1) EP1827701B1 (en)
CN (1) CN1988961B (en)
AT (1) ATE492346T1 (en)
AU (1) AU2005312186B2 (en)
DE (2) DE102004057861A1 (en)
PL (1) PL1827701T3 (en)
WO (1) WO2006058568A1 (en)
ZA (1) ZA200704063B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190557A (en) * 2014-08-05 2014-12-10 安徽奥冠环保设备制造有限公司 Centrifuge feeding device
CN105327788A (en) * 2015-11-18 2016-02-17 湘潭离心机有限公司 Feeding device of vertical centrifugal machine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE885592C (en) * 1951-06-20 1953-08-06 Krauss Maffei Ag Thrust spin inlet
BE519836A (en) * 1952-05-19
BE570079A (en) * 1957-08-09
DE1080028B (en) * 1959-02-27 1960-04-14 Krupp Dolberg G M B H Pusher or screw centrifuge
DE1205914B (en) * 1962-09-15 1965-11-25 Pennsalt Chemicals Corp Feed device for a conical screw screen centrifuge
DE2166589A1 (en) * 1971-10-11 1975-01-30 Otto Wimmer Axially fed split drum centrifuge - having central passage in shaft with channels into drum
DE2150605C3 (en) * 1971-10-11 1975-04-17 Otto 8399 Sulzbach Wimmer centrifuge
JPS59166259A (en) * 1983-03-11 1984-09-19 Mitsubishi Heavy Ind Ltd Feed pipe of centrifugal separator
DE3444349A1 (en) * 1984-10-10 1986-04-10 Klöckner-Humboldt-Deutz AG, 5000 Köln DEVICE FOR ADDING FLOCCULATORS INTO THE SLUDGE WITHIN THE INLET CHAMBER OF A CENTRIFUGE
US5389692A (en) * 1992-10-26 1995-02-14 Bertram; Richard L. Structural strength coating and material
DE29723393U1 (en) * 1997-01-31 1998-08-06 Krauss-Maffei AG, 80997 München Inverting filter centrifuge
CN2624020Y (en) * 2003-01-28 2004-07-07 山东中实股份有限公司 Bilateral control pipe vibrating device

Also Published As

Publication number Publication date
CN1988961B (en) 2012-07-25
AU2005312186B2 (en) 2010-11-18
ATE492346T1 (en) 2011-01-15
DE502005010729D1 (en) 2011-02-03
PL1827701T3 (en) 2011-05-31
ZA200704063B (en) 2008-08-27
EP1827701A1 (en) 2007-09-05
AU2005312186A1 (en) 2006-06-08
DE102004057861A1 (en) 2006-06-01
CN1988961A (en) 2007-06-27
WO2006058568A1 (en) 2006-06-08

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