EP0544263B1 - Vollmantel-Schneckenzentrifuge mit strukturierter Trommelinnenfläche - Google Patents

Vollmantel-Schneckenzentrifuge mit strukturierter Trommelinnenfläche Download PDF

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Publication number
EP0544263B1
EP0544263B1 EP92120108A EP92120108A EP0544263B1 EP 0544263 B1 EP0544263 B1 EP 0544263B1 EP 92120108 A EP92120108 A EP 92120108A EP 92120108 A EP92120108 A EP 92120108A EP 0544263 B1 EP0544263 B1 EP 0544263B1
Authority
EP
European Patent Office
Prior art keywords
drum
adhesive coating
centrifuge according
solid material
stripes
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
EP92120108A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0544263A1 (de
Inventor
Ernst A. Dr.-Ing. Jäger
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.)
Flottweg GmbH
Original Assignee
Flottweg 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 Flottweg GmbH filed Critical Flottweg GmbH
Publication of EP0544263A1 publication Critical patent/EP0544263A1/de
Application granted granted Critical
Publication of EP0544263B1 publication Critical patent/EP0544263B1/de
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
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

Definitions

  • the invention relates to a solid bowl screw centrifuge for separation of suspension in at least one liquid phase and solid which is under the influence of centrifugal force on the inner surface of the drum facing the screw discounts and from the relatively low Differential speed to the rotating screw along the drum Inner drum surface to the one, in particular conical narrowingly formed, axial end region of the drum Pesticide discharge is promoted, the inner surface of the drum with a hinders movement of the solid in the drum circumferential direction Adhesive coating is provided, the surface facing the snail is rough, such that the solid largely in the axial direction shortest possible route to solids discharge.
  • the invention has for its object the preparation of the inner surface of the drum to hinder a wear-promoting and Drive power requirement increasing solid movement in the circumferential direction to make the drum as simple as possible.
  • the adhesive coating is limited to sub-areas, so only partially covered. You can proceed in such a way that the Adhesive coating in the form of spaced in the drum circumferential direction Stripes designed, which in turn can have different courses, so in preferred embodiment in each case parallel to the axis of rotation of the drum running or slightly inclined to the direction of transport of the solid following to the solids discharge.
  • the strip-like adhesive coating can also extend helically or helically, and that under any possible incline with the exception of the helix incline.
  • the streak can so be directed in the same direction as the spiral of the screw, right-handed or left-handed to match the used one Snail or else such that the screw or helical Streak formation of the adhesive coating the sense of slope Helix of the screw used is opposite.
  • the adhesive layer it is possible to apply the adhesive layer to certain areas to limit such that there is a certain stain structure. This does not have to be regular. Furthermore, it is conceivable to have a kind To provide cross pattern structure, in the simplest way so that strip-shaped adhesive coating areas arranged crossing each other are.
  • the adhesive coating up to Solid discharge led out which is basically for each selected coating pattern applies.
  • the adhesive layer itself can be relatively thin, in particular seen less than 0.5 mm in the radial direction.
  • the adhesive layer can be made using plastic, ceramic, tungsten carbide, natural and / or synthetic granular materials, mixtures of these substances can be provided, in particular you will use granular materials in binding materials, as is the case with grinding tools, in particular grinding wheels is known. It is only necessary that these substances or mixtures are sprayable to be applied. A subsequent one Hardening can take place depending on time and / or temperature. The rough one The surface towards the separation area results from the spraying the adhesive layer by itself, so it needs after spraying so far no after-treatment.
  • the solid bowl screw centrifuge shown in the drawing has a drum 1 and a coaxial in basically conventional design to this arranged and rotating to the drum with differential speed Auger 2, whose radially outer peripheral spiral areas reach up to the vicinity of the inner surface of the drum, so that through the inlet pipe 4 in the formed between drum 1 and screw 2 Separation space 3 in the direction of the arrows entered suspension when rotating the drum with high spin speed under the influence of centrifugal force separates into a liquid phase and a solid phase.
  • the inner surface of the drum is straight in the axial direction of the drum provided with an adhesive coating 7, which is thin and covers the entire surface is sprayed onto the inner surface of the drum.
  • the adhesive layer that of granular hard held in a plastic binding Material can exist and a rough facing the snail Has surface, sets the circumferential movement of the solid correspondingly high frictional resistance, so that the smooth trained helix the solid mainly in the axial Encourages direction. This will drive power and wear of the centrifuge parts kept low.
  • Figure 2 is the adhesive coating 7 'on a number - for example six pieces each about 50 mm broad - divided, i.e. the adhesive coating material is only in this Strip shape on the inner surface of the drum at appropriate intervals and otherwise sprayed on in a rotationally symmetrical manner.
  • the stripes 7 ' extend parallel to the longitudinal axis of the drum; in something changed Execution they can be slightly inclined to this axis direction be in line with the actual path that the solids conveyed towards the solids discharge.
  • FIG. 3 shows an adhesive coating 7 ′′ of the inner surface of the drum is formed from a helical strip.
  • Spirals can be provided nested in the axial direction be.
  • the strip-shaped coil according to FIG. 3 runs with respect to its slope in the same orbital direction as that Helix, however, with an incline different from that of the Helix deviates, so that a sweeping movement of the outer periphery of the helix compared to the strip-shaped Coating is given.
  • the order of magnitude is wide Limits selectable.
  • Figure 4 shows an adhesive coating 7 '' 'in the form of a helical Strip, which in its orbital direction to that of the screw spiral runs opposite, so that a sweep of the screw spiral compared to the spiral stripe is inevitable. Also, of course, several spiral turns of strip-like adhesive coatings can be used similar to a multi-flight snail nested one inside the other be provided.

Landscapes

  • Centrifugal Separators (AREA)
EP92120108A 1991-11-26 1992-11-25 Vollmantel-Schneckenzentrifuge mit strukturierter Trommelinnenfläche Expired - Lifetime EP0544263B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4138855 1991-11-26
DE4138855 1991-11-26

Publications (2)

Publication Number Publication Date
EP0544263A1 EP0544263A1 (de) 1993-06-02
EP0544263B1 true EP0544263B1 (de) 1999-04-07

Family

ID=6445616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120108A Expired - Lifetime EP0544263B1 (de) 1991-11-26 1992-11-25 Vollmantel-Schneckenzentrifuge mit strukturierter Trommelinnenfläche

Country Status (5)

Country Link
US (1) US5372260A (enrdf_load_stackoverflow)
EP (1) EP0544263B1 (enrdf_load_stackoverflow)
JP (1) JPH05237416A (enrdf_load_stackoverflow)
DE (2) DE59209674D1 (enrdf_load_stackoverflow)
DK (1) DK0544263T3 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD790298S1 (en) * 2015-11-18 2017-06-27 Carole Andrews Stapler for irrigation pipe and landscape fabric
JP2022120225A (ja) * 2021-02-05 2022-08-18 株式会社クボタ 遠心分離機
USD1081307S1 (en) 2021-12-28 2025-07-01 Ervin Schoeppe Stapler for irrigation pipe and landscape fabric

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101572A (en) * 1934-12-20 1937-12-07 Broatch John Mineral separator
US2806599A (en) * 1954-07-26 1957-09-17 Irene Cottrell Vacuum control for gravity separators
US3096282A (en) * 1957-12-30 1963-07-02 Sharples Corp Improvement in centrifuges
DE1117498B (de) * 1958-12-24 1961-11-16 Cham Ag Maschf Schneckenzentrifuge
US3092582A (en) * 1959-03-20 1963-06-04 Black Clawson Co Centrifuge
NL272134A (enrdf_load_stackoverflow) * 1961-01-11
IT954381B (it) * 1972-03-18 1973-08-30 E Fonderie A Bosco Spa Off Mec Paniere per centrifuga da zucchero
DE2746877A1 (de) * 1977-10-19 1979-04-26 Messerschmitt Boelkow Blohm Schleudertrommel, insbesondere fuer eine zentrifuge
US4328925A (en) * 1978-02-13 1982-05-11 Pennwalt Corporation Hard surfacing for a centrifuge conveyor
EP0076476A3 (de) * 1981-10-02 1984-11-28 Werner Dr. Stahl Dekantier-Zentrifuge
DE3503896A1 (de) * 1985-02-06 1986-08-07 Draiswerke Gmbh, 6800 Mannheim Auskleidung fuer einen behaelter eines mischers

Also Published As

Publication number Publication date
DK0544263T3 (da) 2000-07-03
EP0544263A1 (de) 1993-06-02
JPH05237416A (ja) 1993-09-17
DE59209674D1 (de) 1999-05-12
DE4239790A1 (enrdf_load_stackoverflow) 1993-06-03
US5372260A (en) 1994-12-13
DE4239790C2 (de) 1998-09-03

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