EP0673718A1 - Roue centrifuge avec roue de distribution - Google Patents

Roue centrifuge avec roue de distribution Download PDF

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Publication number
EP0673718A1
EP0673718A1 EP95104252A EP95104252A EP0673718A1 EP 0673718 A1 EP0673718 A1 EP 0673718A1 EP 95104252 A EP95104252 A EP 95104252A EP 95104252 A EP95104252 A EP 95104252A EP 0673718 A1 EP0673718 A1 EP 0673718A1
Authority
EP
European Patent Office
Prior art keywords
impeller
shaft journal
bores
wheel
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.)
Granted
Application number
EP95104252A
Other languages
German (de)
English (en)
Other versions
EP0673718B1 (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 EP0673718A1 publication Critical patent/EP0673718A1/fr
Application granted granted Critical
Publication of EP0673718B1 publication Critical patent/EP0673718B1/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
    • B24C5/068—Transferring the abrasive particles from the feeding means onto the propeller blades, e.g. using central impellers

Definitions

  • centrifugal wheel is known from US-A 2,732,666.
  • a disadvantage of this known centrifugal wheel arrangement is that the structure of the hub area is very complicated and, after loosening the central screw, the impeller basket is very light, but the other parts are very cumbersome are to be removed.
  • a centrifugal wheel arrangement which is characterized in that the shaft journal is surrounded by a ring element consisting of a side window and a hub, in which there are several bores and that the impeller sleeve has a plurality of locking pins arranged around the shaft journal or -screws in the area of the shaft journal are secured against twisting relative to the shaft journal by inserting the locking pins or screws into the holes.
  • the distributor wheel When the central screw is loosened, the distributor wheel can be removed and only the impeller sleeve can be replaced.
  • the sleeve is held against twisting by means of locking pins or screws in the region of the shaft journal, but these parts are also light after lifting off the side window are accessible.
  • the safety pins are also inevitably exchanged, so that increased work safety is ensured in the area of the parts that tend to wear.
  • FIG. 1 schematically shows an axial half-section of a centrifugal wheel 200 placed on a shaft journal 1 of a drive (eg an electric motor - not shown).
  • a drive eg an electric motor - not shown.
  • a distributor wheel 100, two side disks 4, 5 arranged at a mutual distance and between them can also be seen the centrifugal wheel blades 6 arranged on the side windows and radially to the axis of rotation 23 of the centrifugal wheel.
  • the distributor wheel 100 consists of a partially open impeller sleeve 3 and an impeller base 2 which is screwed onto the shaft journal 1 by means of a central screw 8.
  • the impeller sleeve 3 has an inner flange 10 which is overlapped by the periphery of the impeller base 2, which is provided with a recess 12, so that when the central screw 8 is tightened, the base is pressed together with the impeller sleeve in the direction of the shaft journal.
  • the impeller sleeve 3 has a plurality of slit-shaped windows 13, 13 'which are arranged parallel to their surface line at equal intervals.
  • the arrangement of the windows 13, 13 ' can be seen in FIG. 2.
  • several holes 14 are provided in the impeller sleeve from the shaft journal side.
  • the diameter of the recess 12 corresponds to the inner diameter of the inner flange 10; this ensures that the impeller sleeve 3 is exactly centered on the shaft axis. Furthermore, the impeller base 2 is provided with a central, enlarged opening 21, into which a head 22 of the screw 8 is inserted, a resilient washer 9 preventing the screw 8 from loosening.
  • the surface 11 of the impeller base 2 throws out the blasting agent flowing in along the axis of rotation 23 in the direction of the centrifugal wheel circumference, as a result of which turbulence in the air carried along inside the distributor wheel can be reduced.
  • one of the two existing side disks is made in one piece with a hub 16 placed directly on the shaft journal 1, resulting in a one-piece crown element 30.
  • This ring element 30 is provided with bores 17 which are provided in the area of the transition from the hub 16 to the side window 5 at the same angular distance as the bores 15 from the inside.
  • the distributor wheel 100 impeller basket
  • grub screws 15 are in the Bores 14, which are made in the bottom region of the impeller sleeve, screwed in and then let into matching bores 17 of the side window 5.
  • This means that the bores 17 have a slightly larger internal width than the circumference of the grub screws 15.
  • driven pins be used.
  • the second side window 4 is held by spacers 7 at a fixed distance from the side window 5. The distance is precisely adapted to the width of the centrifugal wheel blades 6.
  • the inner sides of the two side disks 4, 5 are provided with radially arranged grooves 24, into which the flank wheel blades 6 are inserted with their flanks 27, 27 '.
  • the centrifugal wheel blades are fixed in the side disks 4, 5 by screwing in screws 25 in the bores 29 of the blades 6 through a bore 28 in the side disk 4, which encloses the head 30 of the screw.
  • a fixing screw could also be screwed into the centrifugal wheel blade from the side window 5; however, in view of easier access, the external access shown in the drawing has been chosen.
  • the blades 6 have reinforced flanks arranged on both sides, which project beyond the two front and rear surfaces of the blades by the same amount. This arrangement of the surfaces of the blades and the lateral attachment of the blades enable the centrifugal wheel to be rotated in both directions. It can therefore be assumed that the centrifugal wheel blades have a double symmetry, namely once to a plane of symmetry that is parallel to lies on the throwing surfaces, and on the other hand to a plane of symmetry which lies to a plane of symmetry lying centrally between the side windows.
  • a rolled profile is excellently suitable for the manufacture of such blades. These are only made from cut sections of such a rolled profile.
  • This rolled profile can also be rolled compacted in the surfaces that come into contact with the blasting material, so that the coefficient of friction there is reduced, a significantly lower coefficient of friction being achieved on the surface than in the case of known casting materials. It therefore comes to the seemingly paradoxical result that a softer material (rolled material) has a longer service life than casting material, as is known from the prior art.
  • the function and assembly of the centrifugal wheel 200 is explained as follows:
  • the abrasive particles Due to a considerable speed - approximately 2100 rpm - of the distributor wheel 100, the abrasive particles are at a high speed, i. H. about 4000 m / min abandoned. The granular, abrasive particles wear out the sleeve 3 and the impeller blades 6, which therefore have to be replaced relatively often.
  • a front wall of the housing (not shown) is unscrewed and dismantled together with the pipe bend 18 and the regulator basket 20 so that the head 22 of the central screw 8 is made accessible.
  • centrifugal wheel blades 6 are exchanged in a similarly simple manner. In these cases, only access to the screws 25 is required, which is obtained by unscrewing the aforementioned housing wall. After the screw 25 has been removed from the bore 28, the centrifugal wheel blades can be pulled out of the guide grooves and a new set of blades can then be inserted.
  • the distributor wheel can be pulled off with the locking grub screws 15, since the latter are not fastened in the ring element 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)
EP95104252A 1994-03-26 1995-03-23 Roue centrifuge avec roue de distribution Expired - Lifetime EP0673718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4410629A DE4410629A1 (de) 1994-03-26 1994-03-26 Schleuderrad mit Verteilerrad
DE4410629 1994-03-26

Publications (2)

Publication Number Publication Date
EP0673718A1 true EP0673718A1 (fr) 1995-09-27
EP0673718B1 EP0673718B1 (fr) 1998-05-27

Family

ID=6513996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104252A Expired - Lifetime EP0673718B1 (fr) 1994-03-26 1995-03-23 Roue centrifuge avec roue de distribution

Country Status (2)

Country Link
EP (1) EP0673718B1 (fr)
DE (2) DE4410629A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2829361A1 (fr) * 2013-07-19 2015-01-28 Prefer - Equipamentos Para Decapagem, Lda. Turbine pour turbine de grenaillage et composants

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10231482A1 (de) * 2002-07-12 2004-01-29 Schlick, Jennifer, Dipl.-Ing. (FH) Strahleinrichtung
CN107882742A (zh) * 2017-12-13 2018-04-06 山东昊安金科新材料股份有限公司 液压马达潜水泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953566A (en) * 1934-01-24 1934-04-03 Wean Engineering Co Inc Blasting machine
US2341560A (en) * 1942-09-11 1944-02-15 Pangborn Corp Abrading apparatus
US2358322A (en) * 1942-04-18 1944-09-19 Julius E Foster Blasting machine
DE2050260A1 (fr) * 1969-10-31 1971-05-13
EP0145104A2 (fr) * 1983-12-03 1985-06-19 Massey, Alexander Roue de projection d'abrasif
EP0148775A2 (fr) * 1984-01-11 1985-07-17 Tilghman Wheelabrator Limited Roues de projection d'abrasif par centrifugation
US5209024A (en) * 1991-10-22 1993-05-11 Pangborn Corporation Inexpensive abrasive blast wheel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732666A (en) * 1956-01-31 powell
US3160990A (en) * 1962-11-29 1964-12-15 Pangborn Corp Particle-throwing apparatus
AT278569B (de) * 1966-07-22 1970-02-10 Wheelabrator Corp Schaufel fuer schleuderraeder
IT1142885B (it) * 1980-10-14 1986-10-15 Bb Shotblast Eng Serv Perfezionamento nelle macchine pulitrici ad abrasione o a graniglia metallica

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953566A (en) * 1934-01-24 1934-04-03 Wean Engineering Co Inc Blasting machine
US2358322A (en) * 1942-04-18 1944-09-19 Julius E Foster Blasting machine
US2341560A (en) * 1942-09-11 1944-02-15 Pangborn Corp Abrading apparatus
DE2050260A1 (fr) * 1969-10-31 1971-05-13
EP0145104A2 (fr) * 1983-12-03 1985-06-19 Massey, Alexander Roue de projection d'abrasif
EP0148775A2 (fr) * 1984-01-11 1985-07-17 Tilghman Wheelabrator Limited Roues de projection d'abrasif par centrifugation
US5209024A (en) * 1991-10-22 1993-05-11 Pangborn Corporation Inexpensive abrasive blast wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2829361A1 (fr) * 2013-07-19 2015-01-28 Prefer - Equipamentos Para Decapagem, Lda. Turbine pour turbine de grenaillage et composants

Also Published As

Publication number Publication date
EP0673718B1 (fr) 1998-05-27
DE59502299D1 (de) 1998-07-02
DE4410629A1 (de) 1995-09-28

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