US3872624A - Curved vane for throwing wheels - Google Patents

Curved vane for throwing wheels Download PDF

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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
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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
Application number
US410925A
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English (en)
Inventor
Kannusami S Ramaswamy
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.)
Pangborn Corp
Unifrax I LLC
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Priority to US410925A priority Critical patent/US3872624A/en
Priority to GB46364/74A priority patent/GB1489225A/en
Priority to DE19742450983 priority patent/DE2450983A1/de
Priority to CH1439674A priority patent/CH586591A5/xx
Priority to JP12349574A priority patent/JPS55187B2/ja
Application granted granted Critical
Publication of US3872624A publication Critical patent/US3872624A/en
Assigned to NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION reassignment NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION, A CORP. OF DE.
Assigned to PANGBORN CORPORATION reassignment PANGBORN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KENNECOTT CORPORATION
Assigned to MERRILL LYNCH INTERFUNDING INC. reassignment MERRILL LYNCH INTERFUNDING INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION
Anticipated expiration legal-status Critical
Assigned to HELLER FINANCIAL, INC., AS AGENT reassignment HELLER FINANCIAL, INC., AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANGBORN CORPORATION
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

  • 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-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Hydraulic Turbines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US410925A 1973-10-29 1973-10-29 Curved vane for throwing wheels Expired - Lifetime US3872624A (en)

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 (de) 1973-10-29 1974-10-26 Schleuderrad fuer eine schleuderstrahlmaschine und schaufel fuer dasselbe
JP12349574A JPS55187B2 (enExample) 1973-10-29 1974-10-28
CH1439674A CH586591A5 (enExample) 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 (enExample)
JP (1) JPS55187B2 (enExample)
CH (1) CH586591A5 (enExample)
DE (1) DE2450983A1 (enExample)
GB (1) GB1489225A (enExample)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414386A1 (fr) * 1978-01-16 1979-08-10 Cockerill Dispositif de fixation pour aubes de turbine de grenaillage
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 (fr) * 1981-03-18 1982-09-24 Kennecott Corp Couronne mobile pour machine de projection d'abrasif, pale pour cette couronne et ensemble a couronne mobile et pales
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
USD304199S (en) 1986-11-03 1989-10-24 Pangborn Corporation, Inc. Vane for throwing wheel
USD304455S (en) 1986-11-03 1989-11-07 Pangborn Corporation Vane for throwing wheel
US4941297A (en) * 1983-06-30 1990-07-17 Pangborn Corporation Flared vane for abrasive blasting wheel
FR2702983A1 (fr) * 1993-03-24 1994-09-30 Rutten Leon Turbine de grenaillage.
WO1997012726A1 (de) * 1995-09-30 1997-04-10 Jost Wadephul Schleuderrad
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 (zh) * 2014-09-25 2017-05-24 维尔贝莱特集团有限公司 用于离心式抛丸机的叶片及离心式抛丸机的维护方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526602U (enExample) * 1978-02-16 1980-02-21
JPS5526601U (enExample) * 1978-02-16 1980-02-21

Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767578C (de) * 1937-02-04 1953-04-09 A Sisson Lehmann S A Ets Sandstrahlgeblaeseartig wirkende Vorrichtung mit Schleuderrad zum Putzen von Werkstuecken

Patent Citations (3)

* Cited by examiner, † Cited by third party
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 (26)

* Cited by examiner, † Cited by third party
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 (fr) * 1978-01-16 1979-08-10 Cockerill Dispositif de fixation pour aubes de turbine de grenaillage
FR2502050A1 (fr) * 1981-03-18 1982-09-24 Kennecott Corp Couronne mobile pour machine de projection d'abrasif, pale pour cette couronne et ensemble a couronne mobile et pales
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
USD304199S (en) 1986-11-03 1989-10-24 Pangborn Corporation, Inc. Vane for throwing wheel
USD304455S (en) 1986-11-03 1989-11-07 Pangborn Corporation Vane for throwing wheel
FR2702983A1 (fr) * 1993-03-24 1994-09-30 Rutten Leon Turbine de grenaillage.
WO1997012726A1 (de) * 1995-09-30 1997-04-10 Jost Wadephul Schleuderrad
US5769693A (en) * 1995-09-30 1998-06-23 Wadephul; Jost Impeller wheel
CN1077828C (zh) * 1995-09-30 2002-01-16 约斯特·瓦德福尔 离心机叶轮
US6126516A (en) * 1999-05-10 2000-10-03 United States Filter Corporation Centrifugal blasting apparatus
US20040166777A1 (en) * 2000-10-02 2004-08-26 Goff James R. Abrasive throwing wheel and improved blade assembly
WO2002028594A1 (en) * 2000-10-02 2002-04-11 Pangborn Corporation 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 (zh) * 2014-09-25 2017-05-24 维尔贝莱特集团有限公司 用于离心式抛丸机的叶片及离心式抛丸机的维护方法
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
GB1489225A (en) 1977-10-19
CH586591A5 (enExample) 1977-04-15
JPS55187B2 (enExample) 1980-01-07
JPS5078987A (enExample) 1975-06-27
DE2450983A1 (de) 1975-04-30

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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