EP0673719B1 - Roue centrifuge avec des aubes fixes - Google Patents

Roue centrifuge avec des aubes fixes Download PDF

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Publication number
EP0673719B1
EP0673719B1 EP95104253A EP95104253A EP0673719B1 EP 0673719 B1 EP0673719 B1 EP 0673719B1 EP 95104253 A EP95104253 A EP 95104253A EP 95104253 A EP95104253 A EP 95104253A EP 0673719 B1 EP0673719 B1 EP 0673719B1
Authority
EP
European Patent Office
Prior art keywords
centrifugal wheel
blades
side plates
centrifugal
wheel
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
EP95104253A
Other languages
German (de)
English (en)
Other versions
EP0673719A1 (fr
Inventor
Horst-Dieter Schlick
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.)
SCHLICK-Roto-Jet Maschinenbau GmbH
Original Assignee
SCHLICK-Roto-Jet Maschinenbau 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 SCHLICK-Roto-Jet Maschinenbau GmbH filed Critical SCHLICK-Roto-Jet Maschinenbau GmbH
Publication of EP0673719A1 publication Critical patent/EP0673719A1/fr
Application granted granted Critical
Publication of EP0673719B1 publication Critical patent/EP0673719B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B24C5/062—Rotor blades or vanes; Locking means therefor

Definitions

  • centrifugal wheel is known, for example from EP-A2-0 094 371.
  • the known centrifugal wheel is the provided with retaining springs Fastening mechanism relatively complex and not usable for longer periods of use.
  • centrifugal wheels from US-PS 34 44 651 and known from DE-OS-21 61 888 are also known. Both known designs work with screw connections and auxiliary elements in the side windows. There are therefore relatively complicated assembly and disassembly operations required.
  • the task therefore is to specify a centrifugal wheel, inexpensive and with just a few assembly steps be provided with a new blading can.
  • centrifugal wheel at the beginning mentioned type, which is characterized in that the impeller blades at least one in a flank from their side included tapped hole, and that in the side windows from the outside of the Holding holes accessible from the side window are that coincide with the tapped holes and each contain the head of a screw in the Threaded hole is screwed.
  • the profile sections are simple and reliable attached and interchangeable.
  • the rolled blades are compared to cast ones that mentioned Have porosities, despite the cheaper Materials last the same or even longer.
  • the uncomplicated Attachment of the blades with one or two Screwing allows easy and quick Exchange.
  • the rolled profile preferably has the shape of an H profile widened flanks, preferably in grooves fit in, which are present in the side windows are.
  • the rolled profile In the area of contact with the blasting material Surfaces, the rolled profile can be rolled compacted, so that there is a practically free of porosity, with provided with a low coefficient of friction and hardened Has surface.
  • Fig. 1 shows schematically an axial half-section one on a shaft journal 1 of a drive (e.g. Electric motor - not shown) attached Centrifugal wheel 200.
  • a distributor wheel can be seen 100, two mutually spaced parallel Side windows 4, 5 and between the side windows arranged radially to the axis of rotation 23 of the centrifugal wheel arranged centrifugal wheel blades 6 as basic elements.
  • the distributor wheel consists of a partially open impeller sleeve 3 and an impeller base 2, which by means of a central screw 8 screwed to the shaft journal 1 is.
  • the impeller sleeve 3 has an inner flange 10 on that from the periphery of the impeller bottom 2, which is provided with a recess 12, overlaps is so that when the central screw is tightened the bottom together with the impeller sleeve in the direction of the shaft journal is pressed.
  • the impeller sleeve 3 has several slit-shaped windows 13, which are parallel to their surface lines in the same Distances are arranged.
  • the arrangement of the windows 13 can be seen in Figure 2.
  • the diameter of the recess 12 corresponds to the inner one Diameter of the inner flange 10; this ensures that the impeller sleeve 3 is exactly centered on the shaft axis lies. Furthermore, the impeller base 2 is with a central, enlarged opening 21 provided in a head 22 of the screw 8 is inserted, wherein a spring washer 9 loosening the screw 8 prevented.
  • Abrasive carried by air is compared to the Shaft journal 1 pressed into the impeller sleeve 3 (arrows P).
  • the surface 11 of the impeller base 2 throws that lengthways the blasting medium flowing in in the direction of the axis of rotation 23 of the centrifugal wheel circumference, causing turbulence reduce the air carried inside the distributor wheel to let.
  • the distributor wheel 100 is countered by grub screws 15 a rotation against the shaft journal 1 is secured. These grub screws are in holes 14 in the bottom area of the impeller sleeve are screwed in and then in matching holes 17 in a side window 5 embedded.
  • the side window 5 in one piece with one directly on the shaft journal 1 attached hub 16 manufactured.
  • the second side window 4 is defined by spacer elements 7 Distance from the side window 5 kept. The distance is precisely adapted to the width of the impeller blades 6.
  • the inside of the two side windows 4, 5 are with radially arranged grooves 24 into which the Flanks 27, 27 'of the impeller blades 6 are inserted (Fig. 3 and 4).
  • the flanks are with tapped holes 29 from the side Mistake.
  • Fixing the impeller blades in and on the Side windows 4, 5 are made by screwing in Screws 25 into the threaded holes 29 of the blades 6 through a bore 28 in the side window 4, the Encloses head 30 of the screw.
  • a fixing screw could also be used on the side window 5 screwed into the centrifugal wheel blade will; however, with respect to one easier access the access shown in the drawing been chosen from outside.
  • a rolled profile is ideally suited 40, which is shown in half in Fig. 4, for Manufacture of such blades. These are just from cut sections of such a rolled profile produced.
  • This rolling profile is in the present Embodiment to the with the blasting material in Contact coming surfaces also rolled rolled, so that the coefficient of friction is reduced there, where a much lower wear than with known ones Casting materials on the surface is achieved. It is coming hence the apparently paradoxical result that a softer material (rolled material) a longer one Tool life as a casting material, as it is from the state of the Technology is known.
  • centrifugal wheel 200 The function of the centrifugal wheel 200 is explained as follows:
  • Distributor wheel 100 Due to a significant speed - about 2100 rpm - des Distributor wheel 100 becomes one of the abrasive particles high speed, d. H. about 4000 m / min abandoned. The granular, abrasive particles wear out the sleeve 3 and the impeller blades 6, which is therefore relative need to be replaced often.
  • a front wall of the housing unscrewed and together with the pipe bend 18 and disassembled the controller basket 20 so that the head 22 of the Central screw 8 is made accessible.
  • the centrifugal wheel blades 6 are exchanged in a similarly simple manner. In these cases, only access to the Screws 25 required by unscrewing the aforementioned housing wall is obtained. After taking out the screw 25 from the bore 28 can The impeller blades are pulled out of the guide grooves and then a new set of blades be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)

Claims (5)

  1. Roue centrifuge (200) pour une installation de grenaillage destinée à traiter la surface d'objets comprenant
    une roue de distribution (100) montée de manière centrée,
    deux plaques latérales (4, 5) disposées à distance mutinelle et parallèlement sur la roue de distribution,
    et des pales (6) de roue centrifuge disposées entre les plaques latérales, fabriquées à partir d'un tronçon d'un profilé laminé (40) symétrique et orientées radialement par rapport a l'axe de rotation de la roue centrifuge, lesquelles pales sont fixées au niveau de leurs flancs sur les plaques latérales (4, 5) par des éléments de blocage,
       caractérisée en ce que
       les pales (6) de roue centrifuge contiennent au moins un trou fileté (29) ménagé dans un flanc à partir du côté de celui-ci et qu'il existe dans les plaques latérales (4, 5) des trous de maintien (28) accessibles par le côté extérieur de la plaque latérale (4) qui coïncident avec les trous filetés (29) et contiennent chacun la tête (30) d'une vis (25) qui est vissée dans le trou fileté.
  2. Roue centrifuge selon la revendication 1, caractérisée en ce que les flancs (27, 27') de pales sont élargis par rapport au reste du profil de pale.
  3. Roue centrifuge selon la revendication 1 ou 2, caractérisée en ce qu'il existe dans les plaques latérales des rainures (24) dans lesquelles se trouvent les flancs (27, 27').
  4. Roue centrifuge selon la revendication 1 ou 2, caractérisée en ce que le profilé laminé des pales est pourvu, dans la zone des surfaces entrant en contact avec l'agent de grenaillage, d'une surface laminée en étant comprimée.
  5. Roue centrifuge selon la revendication 1 ou 3, caractérisée en ce que les pales (6) sont symétriques par rapport à un plan de symétrie (E2) qui se trouve au centre entre les plaques latérales.
EP95104253A 1994-03-26 1995-03-23 Roue centrifuge avec des aubes fixes Expired - Lifetime EP0673719B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4410628 1994-03-26
DE4410628A DE4410628C2 (de) 1994-03-26 1994-03-26 Schleuderrad mit fixierten Schleuderrad-Schaufeln

Publications (2)

Publication Number Publication Date
EP0673719A1 EP0673719A1 (fr) 1995-09-27
EP0673719B1 true EP0673719B1 (fr) 1998-05-27

Family

ID=6513995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104253A Expired - Lifetime EP0673719B1 (fr) 1994-03-26 1995-03-23 Roue centrifuge avec des aubes fixes

Country Status (2)

Country Link
EP (1) EP0673719B1 (fr)
DE (2) DE4410628C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29706888U1 (de) * 1997-04-16 1997-05-28 Schlick Roto Jet Masch Schleuderrad für eine Schleuderstrahlanlage zur Oberflächenbehandlung von Gegenständen
DE19752549C1 (de) * 1997-11-27 1999-04-08 Schlick Roto Jet Masch Schleuderradanordnung zur Oberflächenbehandlung von Gegenständen
DE10104703C1 (de) * 2001-02-02 2001-12-06 Schlick Jennifer Schleuderradanordnung
DE10231482A1 (de) * 2002-07-12 2004-01-29 Schlick, Jennifer, Dipl.-Ing. (FH) Strahleinrichtung
KR100939339B1 (ko) 2003-06-19 2010-01-29 주식회사 포스코 쇼트볼의 배출효율이 향상된 쇼트볼 임펠러 분배장치
CN108161768B (zh) * 2018-01-17 2023-06-02 济南大学 湿法抛丸器
CN113927493A (zh) * 2021-11-03 2022-01-14 芜湖美特方材料科技有限公司 可用于氧化锆，二氧化硅丸料离心抛丸的叶轮

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2119813A (en) * 1936-05-13 1938-06-07 Pangborn Corp Abrading apparatus
AT278569B (de) * 1966-07-22 1970-02-10 Wheelabrator Corp Schaufel fuer schleuderraeder
US3444651A (en) * 1966-11-30 1969-05-20 Max Geisseler Centrifuging wheel
DE2161888A1 (de) * 1971-12-14 1973-06-20 Rudolf Matzke Befestigung der wurfschaufeln an strahlmittelschleuderscheiben
US3867791A (en) * 1974-05-13 1975-02-25 James R Goff Abrasive blasting machine
US4329819A (en) * 1980-04-18 1982-05-18 Ervin Industries, Inc. Centrifugal blasting apparatus
AT377216B (de) * 1982-04-26 1985-02-25 Ver Edelstahlwerke Ag Verfahren zur herstellung gehaerteter wurfschaufeln fuer fliehkraft-strahlvorrichtungen
US4646483A (en) * 1985-10-07 1987-03-03 Pangborn Corporation Vanes for abrasive blasting wheels

Also Published As

Publication number Publication date
EP0673719A1 (fr) 1995-09-27
DE4410628A1 (de) 1995-09-28
DE59502300D1 (de) 1998-07-02
DE4410628C2 (de) 1996-09-19

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