EP0383166A2 - Dispositif de raclage et de déchargement - Google Patents

Dispositif de raclage et de déchargement Download PDF

Info

Publication number
EP0383166A2
EP0383166A2 EP90102351A EP90102351A EP0383166A2 EP 0383166 A2 EP0383166 A2 EP 0383166A2 EP 90102351 A EP90102351 A EP 90102351A EP 90102351 A EP90102351 A EP 90102351A EP 0383166 A2 EP0383166 A2 EP 0383166A2
Authority
EP
European Patent Office
Prior art keywords
housing
housing part
centrifuge
bar
peeling
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
EP90102351A
Other languages
German (de)
English (en)
Other versions
EP0383166A3 (fr
EP0383166B1 (fr
Inventor
Guntram Krettek
Wilhelm Schmitz
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.)
BWS Technologie GmbH
Original Assignee
Krupp Industietechnik GmbH
Dorr Oliver Deutschland 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 Krupp Industietechnik GmbH, Dorr Oliver Deutschland GmbH filed Critical Krupp Industietechnik GmbH
Publication of EP0383166A2 publication Critical patent/EP0383166A2/fr
Publication of EP0383166A3 publication Critical patent/EP0383166A3/fr
Application granted granted Critical
Publication of EP0383166B1 publication Critical patent/EP0383166B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof

Definitions

  • the invention relates to a peeling and discharge device for a peeling centrifuge with a peeling knife arranged in the interior of the centrifugal drum and fastened to a knife carrier, which is used to peel off the solid material layer deposited on the inner surface of the drum shell via an actuating device arranged outside the closed centrifuge housing by means of a gas-tight through the end wall of the centrifuge housing guided link against the solid layer is linearly movable.
  • the peeling performance is to be improved and chatter phenomena or other intolerances are to be avoided, so that the peeling device or even the centrifuge jacket are not damaged.
  • a linearly guided device is also known (DE-AS 14 32 886), which, however, performs a pivoting movement beforehand.
  • a pneumatically operated suction nozzle is moved parallel to the drum axis. It is therefore more a suction device and less a peeling device.
  • the arrangement of the peeling knife on a pivotable device enables simple gastight housing leadthroughs of the connecting parts between the inner peeling knife and the outer actuating device.
  • a disadvantage of the known devices is in particular the constantly changing cutting angle of the peeling knife during the pivoting movement and the changing force relationships.
  • the known devices have to be constructed in a very complex manner, which requires a large amount of space. This is not always the case, especially when the devices are attached to the housing door of the centrifuge housing and this door is made very small for procedural reasons.
  • Peeling and discharge devices are known in various forms.
  • the invention has for its object to design the generic device in such a way that it ensures sufficient stability with a line with a uniform cutting angle and thereby avoids the disadvantages of the known devices.
  • the connecting member consists of a bar which is connected within the centrifugal drum to the knife carrier and outside the centrifugal drum with an axially arranged guide which is movably mounted in an actuating housing connected to the housing of the peeling centrifuge and connected to a control cylinder is, the bar is guided by means of sliding elements in the actuating housing.
  • the device according to the invention forms a stable device which, in particular, can absorb the forces occurring during the peeling process without damaging the corresponding parts.
  • the rotational forces acting on the actuating device during the peeling process can be absorbed with the simplest means without difficulty. So the sliding elements on the one hand ensure that the Peeling knife in a linear direction and prevent twisting of the actuator. Another advantage can be seen in the single-shaft guidance of the actuating device.
  • the peeling centrifuge 1 consists essentially of a centrifuge housing 2 with a stand 2a, the centrifugal drum 3 rotating within the housing 2, which is stored in a bearing 4a and is driven by a drum drive 4.
  • the centrifuge housing 2 is provided on the side opposite the bearing with a housing door 5 which has an opening 6 having. Through this opening 6, a bar 17 is passed, which produces the connecting member for a knife holder 11 with the peeling knife 8 on the one hand and the actuating device 9 on the other.
  • the peeling knife 8 is linearly inserted into the solid material layer 7 for emptying the peeling centrifuge.
  • the material peeled off by the peeling knife 8 falls downwards into a discharge funnel 10 with a discharge nozzle 10a.
  • the knife carrier 11 and also the connecting link to the actuating device 9, namely the beam 17, must be designed so stable that, on the one hand, an elastic deflection is avoided and, on the other hand, no rotational forces are transmitted to the actuating device during the clearing process. These requirements are ensured by a box-shaped knife holder 11 which is connected to the stable beam 17.
  • the knife carrier 11 is formed from a front wall 12, a rear wall 13 and the two end walls 14 and 15, it being possible for the upper part of the rear wall 13a to be bent. This kink with the somewhat shorter front wall 12 gives the peeling knife 8 a better possibility of penetrating the solid material layer and clearing it out into the region of the centrifugal drum 3.
  • the peeling knife 8 is carried by a knife holder 16 which is connected to the rear wall 13 or 13a.
  • the knife carrier 11 is open according to the embodiment in Fig. 2 above and below, so that the material removed by the peeling knife 8 through the knife carrier 11 can pass into the drop hopper 10.
  • the bar 17 is fastened, which is guided outward through the opening 6 of the housing door 5 and is connected there to the actuating device 9.
  • the surfaces of the bar 17 are designated 18 for the surface, 19 for the base surface, 20 for the outer end surface and 21 for the inner end surface.
  • the side surfaces are designated 22 and 23.
  • a guide shaft 28 is welded onto the surface 18, which can be centered by a pin 34, which in turn is inserted in a bore 36 in the beam 17.
  • the guide shaft 28 is guided in the housing 24 of the actuating device 9.
  • the actuating housing 24 consists of a lower housing part 25 and an upper housing part 26, the upper housing part 26 made of solid material having a bore 27 for receiving the guide shaft 28.
  • the upper housing part 26 is connected by means of a flange 29 to the lower housing part 25, which consists of a U-shaped sheet metal or cast body, which in turn is firmly connected to the housing door 5 in the region of the housing door opening 6. Seals 30 and 30a are provided between the upper and lower housing parts 25, 26.
  • sliding elements 31 to 33 are provided, which consist of Teflon and are inserted into the side faces 22, 23 on the one hand and into the outer end face 20 on the other hand are let. These sliding elements rest on the inner surfaces of the lower housing part 25 and thus ensure stable guidance of the beam 17 and give it sufficient sliding ability during its up and down movement when the peeling knife 8 is actuated. With larger devices, more than three sliding elements can also be provided .
  • the door opening 6 is designed so that the bar 17 can be comfortably raised or lowered.
  • the stable and securely guided guide shaft 28 is provided with an upper shaft journal 35 which is surrounded by a bush 37. A web 38 is fastened to this, which is connected to a cylinder rod 40 of a control cylinder 39.
  • the control cylinder 39 is fastened to the lower housing part 25 via a console 41.
  • the bottom 42 is provided with an opening 43 which can be closed by a seal 45 with a removable cover 44.
  • an opening 48 is provided in the upper part of the lower housing part 25, through which a stop 47 is guided into the interior of the housing 25. This stop can be screwed on from the outside via a seal 49.
  • the stop serves to secure the actuating device 9. If the limit switch of the control cylinder 39 fails, then the bar 17 can move against this stop 47 and be stopped.
  • the stop can be equipped with overload protection devices or the like.
  • the box-shaped knife holder 11, the stable connection beams 17 and the stable actuating device 9 ensure perfect operation for peeling and discharging the spun solid.
  • the operation of the invention is such that the control shaft 39 moves the guide shaft with the beam 17 and the knife holder 11 upwards. As a result, the peeling knife 8 moves on a straight line from bottom to top according to arrow B in FIG.
  • a gas and pressure-tight device is created.
  • the lower housing part 25 is tightly and firmly connected to the housing door on all sides.
  • the upper, unspecified opening is tightly connected to the flange 29 with the upper housing part 26 via the seals 30 and 30a.
  • the guide shaft 28 is in turn surrounded by sliding bushes 50 within the housing 26.
  • the invention provides an absolutely tight design between the inside and the outside of the centrifuge.
  • a protective housing 46 which can consist of a thin plastic is only appropriate for the safety of the operating personnel.
  • a further sealing of the system can also be achieved in this way.
  • control cylinder 39 viewed in the axial direction of the centrifugal drum, is arranged in front of the bar 17. The same effect is achieved if the control cylinder is arranged laterally next to the bar 17.

Landscapes

  • Centrifugal Separators (AREA)
  • Automatic Assembly (AREA)
EP90102351A 1989-02-14 1990-02-07 Dispositif de raclage et de déchargement Expired - Lifetime EP0383166B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904358 1989-02-14
DE3904358A DE3904358C2 (de) 1989-02-14 1989-02-14 Schäl- und Austragsvorrichtung

Publications (3)

Publication Number Publication Date
EP0383166A2 true EP0383166A2 (fr) 1990-08-22
EP0383166A3 EP0383166A3 (fr) 1991-04-17
EP0383166B1 EP0383166B1 (fr) 1995-05-24

Family

ID=6374028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102351A Expired - Lifetime EP0383166B1 (fr) 1989-02-14 1990-02-07 Dispositif de raclage et de déchargement

Country Status (3)

Country Link
US (1) US5066271A (fr)
EP (1) EP0383166B1 (fr)
DE (1) DE3904358C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398282B (de) * 1990-12-06 1994-11-25 Eder Wolfgang Zentrifuge
EP3323488A1 (fr) * 2016-11-21 2018-05-23 Andritz KMPT GmbH Centrifugeuse filtrante

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300233A (en) * 1993-02-09 1994-04-05 Dorr-Oliver Incorporated Process of displacement washing in a centrifuge filter
DE19946330A1 (de) * 1999-09-28 2001-03-29 Guntram Krettek Schälzentrifuge
DE102014106462B3 (de) * 2014-05-08 2015-07-02 Andritz Kmpt Gmbh Schwenkgetriebe sowie Schwenkantriebssystem mit einem solchen und Schälzentrifuge und Filteranlage mit einem solchen Schwenkantriebssystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234332A (en) * 1939-09-06 1941-03-11 Sharples Corp Centrifugal separator
US3092575A (en) * 1959-12-09 1963-06-04 Baker Perkins Inc Centrifugal machine stripper knife and controlling mechanism
FR2169204A1 (fr) * 1972-01-24 1973-09-07 Escher Wyss Sa

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE542231C (de) * 1932-01-21 J A Maffei A G Schleudermaschine mit im Innern der Schleudertrommel vorgesehener, auf Fuehrungen o. dgl. auf- und abwaerts bewegbarer kastenartiger Schaelvorrichtung
DE578004C (de) * 1933-06-08 Gustav Ter Meer Dr Ing Austragvorrichtung fuer Schaelschleudermaschinen
US2755991A (en) * 1952-08-08 1956-07-24 American Tool & Machine Compan Discharger shoe apparatus for centrifugal separator
DE1432886A1 (de) * 1964-03-03 1969-10-23 Titus Hans Joachim Verfahren zum Ausraeumen von Vertikal-Zentrifugen
US3279613A (en) * 1964-11-10 1966-10-18 Ametek Inc Centrifugals
US3279612A (en) * 1964-11-10 1966-10-18 Ametek Inc Centrifugals
US3779450A (en) * 1972-03-29 1973-12-18 Pennwalt Corp Basket centrifuge
JPS61178052A (ja) * 1985-02-01 1986-08-09 Matsumoto Kikai Seisakusho:Kk 遠心分離機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234332A (en) * 1939-09-06 1941-03-11 Sharples Corp Centrifugal separator
US3092575A (en) * 1959-12-09 1963-06-04 Baker Perkins Inc Centrifugal machine stripper knife and controlling mechanism
FR2169204A1 (fr) * 1972-01-24 1973-09-07 Escher Wyss Sa

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398282B (de) * 1990-12-06 1994-11-25 Eder Wolfgang Zentrifuge
EP3323488A1 (fr) * 2016-11-21 2018-05-23 Andritz KMPT GmbH Centrifugeuse filtrante

Also Published As

Publication number Publication date
EP0383166A3 (fr) 1991-04-17
EP0383166B1 (fr) 1995-05-24
US5066271A (en) 1991-11-19
DE3904358C2 (de) 1997-09-11
DE3904358A1 (de) 1990-08-02

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