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1、INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MEYnYHAPO0HM OPTiHM3AUMII no CTAHnAPTM3AUM.ORGANISATION INTERNATIONALE DE NOAMALISATION Continuous mechanical handling equipment for loose bulk materials - Dimensions of bends for use in pneumatic handling Engins de manutention c
2、ontinue pour produits en vrac - Dimensions des coudes pour la manutention pneumatique First edition - 1974-12-15 HINII$l J?.tar:riat . % Descriptors : handling equipment, continuous handling, bulk products, pneumatic equipment, pneumatic lines, pipe bends, dimensions. : Price based on 2 pages Copyri
3、ght International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:37:57 MDTNo reproduction or networking permitted without license from IHS -,-,- FOREWORD IS0 (the International Organization for Stan
4、dardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be r
5、epresented on that Committee. international organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International S
6、tandards by the IS0 Council. International Standard IS0 3284 was drawn up by Technical Committee ISO/TC 101, Continuous mechanical handling equipment, and circulated to the Member Bodies in November 1973. It has been approved by the Member Bodies of the following countries : Australia Germany Belgiu
7、m India Bulgaria Ireland Czechoslovakia Italy Egypt, Arab Rep. of Netherlands Finland Poland France South Africa, Rep. of Spain Sweden Thailand Turkey United Kingdom U.S.S.R. Yugoslavia No Member Body expressed disapproval of the document. 0 International Organization for Standardization, 1974 l Pri
8、nted in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:37:57 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0
9、3284-1974 (E) Continuous mechanical handling equipment for loose bulk materials - Dimensions of bends for use in pneumatic handling 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies the dimensions of bends for use in pneumatic handling for loose bulk materials, in three series :
10、 light, moderate and heavy. 2 SYMBOLS D = Inside diameter D1 = Outside diameter R = Mean radius of curve L = Length of straight sleeve 3 DIMENSIONS FOR LIGHT DUTY SERVICE Dimensions millimatre -.- -in _. _ Large curve R D DI Small curve ) R Intermediate curve R 66 70 160 500 - 72.1 76.1 175 500 1 50
11、0 84.9 88.9 207.5 500 96.4 101.6 235 750 102,8 108 - 252.5 750 109.1 114.3 270 750 2000 127.2 133 311.5 750 133.9 139.7 330 750 I 153.2 159 - 375 1000 2000 162.5 168.3 390 1000 2 000 187.9 193.7 455 1 000 2 000 211.9 219.1 515 1 250 2 500 236 5 I 244, 580 1 250 2500 1) These curves may be used in th
12、e moderate series. NOTE - The priorit series are underlined. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:37:57 MDTNo reproduction or networking permitted without license
13、 from IHS -,-,- Dimensions in millimetres . - _.-. -. -.- . - . . - . . . - Small curve Intermediate curve Large curve D Dl R R L R L 43.1 48.3 109,5 48.8 54 122,5 G 57 130 54.5 60.3 137.5 64.2 70 - 160 70.3 76.1 175 82.5 83 207.5 94,4 101.6 235 100.8 108 252.5 107,l 114.3 270 125 133 311.5 z.7 - 13
14、9,7 330 150 159 375 159.3 - 168.3 390 182.9 193,! 455 207.3 219,l 515 231.9 244.5 580 260.4 273 650 315,1 323.9 770 339.6 355.6 850 352 368 875 - - 5 DIMENSIONS FOR HEAVY DUTY SERVICE 500 500 500 500 500 500 500 750 750 750 750 750 1000 1000 1000 1250 1250 1250 1250 1250 1250 500 506 500 500 500 500
15、 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 1000 500 1 000 500 1000 500 1000 500 1000 500 1000 500 1000 500 1500 500 1500 500 1500 500 1500 500 1500 500 2000 500 2000 500 2000 500 2500 500 2500 500 2500 500 2500 500 2500 500 2500 500 Dimensions in millimetres D DI 40.2 48.3 44 54 32
16、 57 50.3 60.3 57.4 - 70 63.5 76,l 76.3 83 89 101.6 -2- 954 108 101.7 114,3 120.4 133 127.1 139.7 146,4 159 - 155.7 168.3 177.7 193.7 203.1 219,l 228.5 x35 253 273 303,9 323.9 335.6 355.6 Small curve Intermediate curve Large curve R L R L R L 120 50 500 500 750 500 120 50 500 500 750 500 150 50 500 5
17、00 750 500 150 50 500 500 750 500 160 50 750 500 1000 500 175 50 750 500 1 000 500 200 50 750 500 1500 500 200 50 750 500 1500 500 200 50 750 500 1500 500 215 75 1000 500 1500 500 250 75 1000 500 1 500 500 265 75 1000 500 1500 500 300 75 1000 500 1500 500 320 100 1 000 500 1500 500 365 100 1000 500
18、1500 500 415 100 1000 500 1500 500 465 100 1000 500 1500 500 550 150 1000 500 1500 500 650 150 1500 500 2000 500 700 150 1500 500 2000 500 NOTE - The recommended values of elementary arcs are : 15“,22,5“,30“.Thev are usually made in cast materials, 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:37:57 MDTNo reproduction or networking permitted without license from IHS -,-,-