US3872624A - Curved vane for throwing wheels - Google Patents
Curved vane for throwing wheels Download PDFInfo
- Publication number
- US3872624A US3872624A US410925A US41092573A US3872624A US 3872624 A US3872624 A US 3872624A US 410925 A US410925 A US 410925A US 41092573 A US41092573 A US 41092573A US 3872624 A US3872624 A US 3872624A
- Authority
- US
- United States
- Prior art keywords
- vane
- wheel
- rotation
- throwing
- curve
- 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
Links
Images
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
- ABSTRACT An abrasive particle throwing wheel having throwing vanes extending perpendicular to one face of the wheel and generally radially of the wheel with a forward curve, i.e., in the direction of rotation of the wheel, the curve being shaped so that an angle between a radius through the tip of the vane and a tangent through the vane surface at the tip is, preferably, from about 25to about 35, the optimum angle being 31 and 40 minutes.
- the forwardly curved vane provides abrasive particles with increased velocity or permits slower than conventional wheel rotation without a corresponding decrease in particle velocity. Reduction of wheel speed results in reduction of noise frequency and level, a reduction in turbulence, and also permits a reduction in the number of throwing vanes which further reduces the noise frequency.
- centrifugal throwing wheels in general use have not utilized a curved vane to significantly reduce the wear and the noise level of conventional throwing wheels.
- an abrasive particle throwing wheel of the type having an axis of rotation includes a plurality of vanes extending generally perpendicular to one face of the wheel with their innermost ends spaced from the axis of rotation, an impeller cage on said wheel disposed between the innermost ends of said vanes, the improvement comprising curved vanes wherein the curve of each vane is such that the angle between a radius through the outermost edge and a tangent is from about to about the optimum angle being 31 and minutes.
- V,,- is the tangential velocity of the tip of a radial vane
- V is the tangential velocity of the tip of a backward curved vane
- V, is the tangential velocity of the tip of a forward curved vane
- the impact on the backward curve blade is (1.29) or 1.66 of a radial vane
- the impact on the forward curve vane is (0.877) or 0.77 of a radial vane wheel.
- FIG. 1 is a fragmentary view of the face of a throwing wheel and shows one throwing vane which is forwardly curved in accordance with the present invention.
- FIG. 2 is a fragmentary sectional view of the throwing wheel shown in FIG. 1.
- FIG. 3 is an end view of a curved vane as mounted on a throwing wheel taken on line 33 of FIG. 1.
- FIG. 4 is a pictorial analysis of the velocity vectors and physical characteristics of the curved vane.
- a throwing wheel assembly generally indicated by the numeral 10, includes a throwing wheel 12 mounted for rotation about an axis 14 and having a plurality of curved vanes 16 extending generally perpendicular to one face of the wheel.
- the vanes 16 extend generally radially from the axis ofrotation 14 and have an innermost end 18 spaced a given distance r (FIG. 4) from the axis of rotation 14 and an outermost end 20 spaced a given distance R (FIG. 4) from the axis of rotation 14.
- a conventional impeller cage (not shown) is disposed on the wheel 12 between the innermost ends of the vanes for feeding abrasive particles to the vanes through at least one feed slot in the cage.
- a tangent T through the vane surface at the outermost tip defines an angle 0 about 25 to about 35 with respect to a radius R extending from the axis of rotation 14 through the outermost tip 20.
- V (K) 21rRN/6O
- K 21rRN/6O
- d/d6 (K (6)) 0 d/d6 (1 cos 6 sin 26) 0 Since cos-6 l cos 26/2:
- the variation of (KW is found to be small between to
- the radius r is generally less than 1/2 R and, preferably, r is less than about l/3 R.
- the curve of the vane 16 substantially describes an arc of a circle which passes through the innermost end 18 and outermost end 20 of the vane 16.
- the radius through the innermost end 18 and the radius through the outermost end 20 of the vane 16 form an angle phi (1b) with respect to the axis of rotation 14 of the wheel 10.
- the are of the vane is described by a radius having an included angle theta (6) plus phi (4)) degrees.
- a preferred vane 16 will have d 10.47 inches and d) l5.88.
- the blades or vanes 16 are equally spaced around the wheel 12 and locked in place by providing an enlarged dove-tailed edge on a base member 30 on one side of the vane 16 snugly engaged within a corresponding dove-tailed slot 32 in the wheel 12.
- the vane 16 is introduced at the wheel periphery into the slot 32 and moved therealong until the innermost end 18 of the vane approaches a center stud 34.
- a wedge type locking pin 36 is inserted into a bored hole in the wheel 12 after which the vane 16 is moved outwardly toward the wheel periphery so that the outer end of the bottom of the vane 16 rides over the pin 36.
- a locking ring 38 is then installed in place and forces the vane 16 against the locking pin 36 to form a tight fit.
- a centrifugal throwing wheel of the type including a rotatable runnerhead having a plurality of vanes mounted thereon for throwing particles therefrom; the improvement comprising a throwing vane being curved continuously forwardly in the direction of rotation, the curve of said vane defining an arc of a circle extending substantially from an innermost tip to an outermost tip of said vane; the curve of said vane being further de' fined by an angle formed between a radius extending from the center of rotation through the outermost tip of said vane and a line tangential to said curve at the outermost tip, said angle being substantially 31 and 40 minutes.
- a particle throwing vane for a centrifugal wheel of the type including a rotatable runnerhead which is ro tatable in a direction of intended rotation about a fixed center of rotation and wherein said throwing vane includes a base member for mounting said vane on said runner head in outwardly spaced relation from said center of rotation, the improvement comprising: said vane being curved continuously forwardly in the direction of intended rotation, the curve of said vane defining an arc of a circle extending substantially from an innermost tip to an outermost tip of said vane; said vane and base member being constructed and arranged for being mounted on said runner head such that a radius extending from said center of rotation through the outermost tip of said vane and a line tangential to said curve at the outermost tip define an angle of substan-
Abstract
Description
Claims (2)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US410925A US3872624A (en) | 1973-10-29 | 1973-10-29 | Curved vane for throwing wheels |
GB46364/74A GB1489225A (en) | 1973-10-29 | 1974-10-25 | Curved vane for throwing wheels |
DE19742450983 DE2450983A1 (en) | 1973-10-29 | 1974-10-26 | SPIN WHEEL FOR A SPRAY BLASTING MACHINE AND SHOVEL FOR THE SAME |
JP12349574A JPS55187B2 (en) | 1973-10-29 | 1974-10-28 | |
CH1439674A CH586591A5 (en) | 1973-10-29 | 1974-10-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US410925A US3872624A (en) | 1973-10-29 | 1973-10-29 | Curved vane for throwing wheels |
Publications (1)
Publication Number | Publication Date |
---|---|
US3872624A true US3872624A (en) | 1975-03-25 |
Family
ID=23626815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US410925A Expired - Lifetime US3872624A (en) | 1973-10-29 | 1973-10-29 | Curved vane for throwing wheels |
Country Status (5)
Country | Link |
---|---|
US (1) | US3872624A (en) |
JP (1) | JPS55187B2 (en) |
CH (1) | CH586591A5 (en) |
DE (1) | DE2450983A1 (en) |
GB (1) | GB1489225A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2414386A1 (en) * | 1978-01-16 | 1979-08-10 | Cockerill | FIXING DEVICE FOR BLASTING TURBINE BLADES |
US4174593A (en) * | 1976-04-16 | 1979-11-20 | Riichi Maeda | Abrasive blasting machine |
US4277965A (en) * | 1977-11-24 | 1981-07-14 | Cockerill | Centrifugal shotting turbine |
FR2502050A1 (en) * | 1981-03-18 | 1982-09-24 | Kennecott Corp | MOBILE CROWN FOR ABRASIVE PROJECTION MACHINE, BLADE FOR THIS CROWN AND MOBILE CROWN ASSEMBLY AND BLADES |
US4447993A (en) * | 1982-04-16 | 1984-05-15 | Laido Donald A | Alignment means for centrifugal blasting wheel |
US4471583A (en) * | 1981-03-18 | 1984-09-18 | The Kennecott Corporation | Vane retention apparatus for abrasive blasting mechanism |
US4509300A (en) * | 1981-03-18 | 1985-04-09 | Kennecott Corporation | Vane retention apparatus for abrasive blasting machine |
US4941297A (en) * | 1983-06-30 | 1990-07-17 | Pangborn Corporation | Flared vane for abrasive blasting wheel |
FR2702983A1 (en) * | 1993-03-24 | 1994-09-30 | Rutten Leon | Shot blasting turbine. |
WO1997012726A1 (en) * | 1995-09-30 | 1997-04-10 | Jost Wadephul | Impeller wheel |
US6126516A (en) * | 1999-05-10 | 2000-10-03 | United States Filter Corporation | Centrifugal blasting apparatus |
WO2002028594A1 (en) * | 2000-10-02 | 2002-04-11 | Pangborn Corporation | Abrasive throwing wheel and improved blade assembly |
US6764390B2 (en) | 2001-11-28 | 2004-07-20 | International Surface Preparation Group, Inc. | Centrifugal throwing vane |
US20110117824A1 (en) * | 2009-11-16 | 2011-05-19 | Loutzenheiser Mathew Lynn | Vane, mounting assembly and throwing wheel apparatus having a locking member tapered in two planes |
US9440330B2 (en) | 2014-01-07 | 2016-09-13 | Astech Alloy Steel Technologies, Inc. | Shot blast cleaning wheel blade and blade and wheel combination |
CN106715050A (en) * | 2014-09-25 | 2017-05-24 | 维尔贝莱特集团有限公司 | Blade for centrifugal blast wheel machine and method of maintaining a centrifugal blast wheel machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5526602U (en) * | 1978-02-16 | 1980-02-21 | ||
JPS5526601U (en) * | 1978-02-16 | 1980-02-21 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1108542A (en) * | 1914-02-16 | 1914-08-25 | Elbert Finley Anderson | Centrifugal sand screening and separating machine. |
US2205414A (en) * | 1937-10-13 | 1940-06-25 | Pangborn Corp | Abrading apparatus |
US3090166A (en) * | 1959-02-17 | 1963-05-21 | Bell Intercontinental Corp | Polishing method and device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767578C (en) * | 1937-02-04 | 1953-04-09 | A Sisson Lehmann S A Ets | Sandblasting device with a blower wheel for cleaning workpieces |
-
1973
- 1973-10-29 US US410925A patent/US3872624A/en not_active Expired - Lifetime
-
1974
- 1974-10-25 GB GB46364/74A patent/GB1489225A/en not_active Expired
- 1974-10-26 DE DE19742450983 patent/DE2450983A1/en not_active Withdrawn
- 1974-10-28 JP JP12349574A patent/JPS55187B2/ja not_active Expired
- 1974-10-28 CH CH1439674A patent/CH586591A5/xx not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1108542A (en) * | 1914-02-16 | 1914-08-25 | Elbert Finley Anderson | Centrifugal sand screening and separating machine. |
US2205414A (en) * | 1937-10-13 | 1940-06-25 | Pangborn Corp | Abrading apparatus |
US3090166A (en) * | 1959-02-17 | 1963-05-21 | Bell Intercontinental Corp | Polishing method and device |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4174593A (en) * | 1976-04-16 | 1979-11-20 | Riichi Maeda | Abrasive blasting machine |
US4277965A (en) * | 1977-11-24 | 1981-07-14 | Cockerill | Centrifugal shotting turbine |
US4366690A (en) * | 1977-11-24 | 1983-01-04 | Cockerill Sambre | Centrifugal shotting turbine |
FR2414386A1 (en) * | 1978-01-16 | 1979-08-10 | Cockerill | FIXING DEVICE FOR BLASTING TURBINE BLADES |
FR2502050A1 (en) * | 1981-03-18 | 1982-09-24 | Kennecott Corp | MOBILE CROWN FOR ABRASIVE PROJECTION MACHINE, BLADE FOR THIS CROWN AND MOBILE CROWN ASSEMBLY AND BLADES |
US4402163A (en) * | 1981-03-18 | 1983-09-06 | Kennecott Corporation | Vane retention apparatus for abrasive blasting machine |
US4471583A (en) * | 1981-03-18 | 1984-09-18 | The Kennecott Corporation | Vane retention apparatus for abrasive blasting mechanism |
US4509300A (en) * | 1981-03-18 | 1985-04-09 | Kennecott Corporation | Vane retention apparatus for abrasive blasting machine |
US4447993A (en) * | 1982-04-16 | 1984-05-15 | Laido Donald A | Alignment means for centrifugal blasting wheel |
US4941297A (en) * | 1983-06-30 | 1990-07-17 | Pangborn Corporation | Flared vane for abrasive blasting wheel |
FR2702983A1 (en) * | 1993-03-24 | 1994-09-30 | Rutten Leon | Shot blasting turbine. |
US5769693A (en) * | 1995-09-30 | 1998-06-23 | Wadephul; Jost | Impeller wheel |
WO1997012726A1 (en) * | 1995-09-30 | 1997-04-10 | Jost Wadephul | Impeller wheel |
CN1077828C (en) * | 1995-09-30 | 2002-01-16 | 约斯特·瓦德福尔 | Impeller wheel of centrifugal machine |
US6126516A (en) * | 1999-05-10 | 2000-10-03 | United States Filter Corporation | Centrifugal blasting apparatus |
WO2002028594A1 (en) * | 2000-10-02 | 2002-04-11 | Pangborn Corporation | Abrasive throwing wheel and improved blade assembly |
US20040166777A1 (en) * | 2000-10-02 | 2004-08-26 | Goff James R. | Abrasive throwing wheel and improved blade assembly |
US7311584B2 (en) * | 2000-10-02 | 2007-12-25 | Pangborn Corporation | Abrasive throwing wheel and improved blade assembly |
US6764390B2 (en) | 2001-11-28 | 2004-07-20 | International Surface Preparation Group, Inc. | Centrifugal throwing vane |
US20110117824A1 (en) * | 2009-11-16 | 2011-05-19 | Loutzenheiser Mathew Lynn | Vane, mounting assembly and throwing wheel apparatus having a locking member tapered in two planes |
US8550881B2 (en) | 2009-11-16 | 2013-10-08 | Pangborn Corporation | Vane, mounting assembly and throwing wheel apparatus having a locking member tapered in two planes |
US9440330B2 (en) | 2014-01-07 | 2016-09-13 | Astech Alloy Steel Technologies, Inc. | Shot blast cleaning wheel blade and blade and wheel combination |
CN106715050A (en) * | 2014-09-25 | 2017-05-24 | 维尔贝莱特集团有限公司 | Blade for centrifugal blast wheel machine and method of maintaining a centrifugal blast wheel machine |
US10384327B2 (en) | 2014-09-25 | 2019-08-20 | Wheelabrator Group Limited | Blade for centrifugal blast wheel machine and method of maintaining a centrifugal blast wheel machine |
Also Published As
Publication number | Publication date |
---|---|
JPS5078987A (en) | 1975-06-27 |
GB1489225A (en) | 1977-10-19 |
CH586591A5 (en) | 1977-04-15 |
DE2450983A1 (en) | 1975-04-30 |
JPS55187B2 (en) | 1980-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KENNECOTT CORPORATION Free format text: MERGER;ASSIGNORS:BEAR CREEK MINING COMPANY;BEAR TOOTH MINING COMPANY;CARBORUNDUM COMPANY THE;AND OTHERS;REEL/FRAME:003961/0672 Effective date: 19801230 |
|
AS | Assignment |
Owner name: NATIONAL WESTMINSTER BANK USA, 592 FIFTH AVENUE, N Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION, A CORP. OF DE.;REEL/FRAME:004576/0188 Effective date: 19860724 |
|
AS | Assignment |
Owner name: PANGBORN CORPORATION, PANGBORN BLVD., HAGERSTOWN, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KENNECOTT CORPORATION;REEL/FRAME:004614/0421 Effective date: 19860725 |
|
AS | Assignment |
Owner name: MERRILL LYNCH INTERFUNDING INC., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION;REEL/FRAME:005237/0297 Effective date: 19891211 |
|
AS | Assignment |
Owner name: HELLER FINANCIAL, INC., AS AGENT, ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:PANGBORN CORPORATION;REEL/FRAME:008861/0226 Effective date: 19971209 |