EP1318890A1 - Dispositif pour accelerer un produit de sablage - Google Patents

Dispositif pour accelerer un produit de sablage

Info

Publication number
EP1318890A1
EP1318890A1 EP01967264A EP01967264A EP1318890A1 EP 1318890 A1 EP1318890 A1 EP 1318890A1 EP 01967264 A EP01967264 A EP 01967264A EP 01967264 A EP01967264 A EP 01967264A EP 1318890 A1 EP1318890 A1 EP 1318890A1
Authority
EP
European Patent Office
Prior art keywords
blades
centrifugal wheel
feed line
axis
mouth
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
EP01967264A
Other languages
German (de)
English (en)
Other versions
EP1318890B1 (fr
Inventor
Jost Wadephul
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1318890A1 publication Critical patent/EP1318890A1/fr
Application granted granted Critical
Publication of EP1318890B1 publication Critical patent/EP1318890B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

  • the invention relates to a device for accelerating blasting media with a centrifugal wheel, which can be driven to rotate about an axis of rotation and has blades which are aligned essentially radially to the axis of rotation and have a side plate on which the blades are held with a side edge, and with at least one feed line for the blasting medium, whose mouth adjoins the free side edges of the blades of the centrifugal wheel outside of the axis of rotation of the centrifugal wheel.
  • the blasting agent is fed laterally into the effective area of the blades of the centrifugal wheel.
  • the blades are with a side edge on the Side plate, on which the drive elements of the centrifugal wheel act, are held by the centrifugal wheel, while the other or free side edge of the blades of the rotating centrifugal wheel sweeps past the mouth of the feed line for the blasting medium.
  • This type of feeding of the blasting media into the centrifugal wheel can lead to damage, in particular of its blades, if the blasting media that is fed in contains larger impurities such as screw nuts or bolts, since a "pinch edge" that is smaller when the blades pass the opening of the feed line or is narrower than these impurities. Furthermore, the inflow of the blasting agent is briefly interrupted when the blades pass by this opening.
  • the blasting medium is fed to the centrifugal wheel in the region of the inner ends of the blades adjacent to the centrifugal wheel hub.
  • the opening of the feed line which is designed as a beveled channel, projects into the effective area of the blades that pass an appropriately shaped inner end past this opening.
  • This type of feeding of the blasting medium into the interior of the centrifugal wheel has the same disadvantages that occur in the device known from US Pat. No. 2,363,437, since a "squeeze edge" also arises when the blades pass the channel-shaped opening of the feed line.
  • the object of the invention is to provide a device for accelerating blasting media into which blasting media with foreign bodies that are larger than the blasting media can be fed without causing breakage damage to the centrifugal wheel.
  • this object is achieved according to the invention in that the blades have incisions on their side facing the feed line, which are opposite the mouth of the feed line.
  • the mouth of the feed line projects into the area of the incisions of the blades in order to optimally feed the blasting agent into the effective area of the centrifugal wheel.
  • ribs are provided on the outer surface of the side window of the centrifugal wheel which faces the drive side.
  • Fig. 1 a schematic sectional view through a centrifugal wheel, which is arranged in a housing.
  • FIG. 2 is a schematic sectional view through the centrifugal wheel and the housing along the line I-I of FIG. 1st
  • the centrifugal wheel 8 shown in FIGS. 1 and 2 is surrounded by a housing 10, into which a feed line 6 opens, with which the blasting agent such as quartz sand or steel shot is fed to the centrifugal wheel 8.
  • the drive shaft 5 of the centrifugal wheel 8 protrudes from the housing 10.
  • the centrifugal wheel 8 has a side plate 4 which is fastened to a drive shaft 5 and carries blades 2 on the surface opposite the drive shaft 5, the inner ends of which adjoin a sleeve-shaped rotary body 1.
  • the rotating body 1 forming the hub of the centrifugal wheel 8 is provided in the center of the centrifugal wheel 8 and is connected in a rotationally fixed manner to the drive shaft 5 or the side window 4.
  • the supply line 6 enters the housing 10 radially laterally from the rotary body 1, the mouth 7 of which adjoins the free side edges of the blades 2 of the centrifugal wheel 8. Incisions 3 are formed in the blades 2, which are opposite the mouth 7.
  • Ribs 9 are also formed on the surface of the side window 4 opposite the blades 2.
  • the mouth 7 of the feed line 6 can protrude into the incisions 3 in the blades 2.
  • the incisions 3 can also be curved, the curvature with a bulge can be provided, which can extend in the radial direction from the center of the centrifugal wheel 8 over the mouth 7 of the feed line 6 to the outside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Particle Accelerators (AREA)
  • Radiation-Therapy Devices (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Nozzles (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP01967264A 2000-08-15 2001-08-13 Dispositif pour accelerer un produit de sablage Expired - Lifetime EP1318890B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20014303U 2000-08-15
DE20014303 2000-08-15
PCT/EP2001/009355 WO2002014017A1 (fr) 2000-08-15 2001-08-13 Dispositif pour accelerer un produit de sablage

Publications (2)

Publication Number Publication Date
EP1318890A1 true EP1318890A1 (fr) 2003-06-18
EP1318890B1 EP1318890B1 (fr) 2005-05-04

Family

ID=7945358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01967264A Expired - Lifetime EP1318890B1 (fr) 2000-08-15 2001-08-13 Dispositif pour accelerer un produit de sablage

Country Status (5)

Country Link
US (1) US7537513B2 (fr)
EP (1) EP1318890B1 (fr)
AT (1) ATE294671T1 (fr)
DE (1) DE50106129D1 (fr)
WO (1) WO2002014017A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363437A (en) * 1943-06-14 1944-11-21 Rolland E Peterson Centrifugal blasting machine
DE921615C (de) * 1951-09-16 1954-12-23 Badische Maschinenfabrik A G Schleuderradschaufel fuer Schleuderrad-Putzmaschinen zum Putzen von Guss- oder Walzwerkserzeugnissen u. ae., zum Mattieren von Glas u. dgl.
GB830042A (en) * 1957-01-16 1960-03-09 John Arthur Frank Kinsman Improvements in or relating to centrifugal machines
US4249350A (en) * 1979-01-15 1981-02-10 Goff James R Abrasive throwing wheel and improved blade assembly
GB8332348D0 (en) * 1983-12-03 1984-01-11 Massey A Machine part
JPS6176272A (ja) * 1985-09-18 1986-04-18 Nitsuchiyuu:Kk シヨツトブラスト投射装置
US4759156A (en) * 1986-08-19 1988-07-26 Acd, Inc. Blast media transport and throwing wheel
DD265847A1 (de) * 1987-11-06 1989-03-15 Schiffbau Veb K Schleuderradstrahlvorrichtung
DE19838733C1 (de) * 1998-08-26 1999-11-25 Jost Wadephul Schleuderrad

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0214017A1 *

Also Published As

Publication number Publication date
DE50106129D1 (de) 2005-06-09
ATE294671T1 (de) 2005-05-15
US20020155796A1 (en) 2002-10-24
US7537513B2 (en) 2009-05-26
EP1318890B1 (fr) 2005-05-04
WO2002014017A1 (fr) 2002-02-21

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