ISO 561-1989 Coal preparation plant graphical symbols《选煤厂 图形符号》.pdf
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1、INTERNATIONAL STANDARD IS0 561 Second edition 1989-12-01 Corrected and reprinted 1992-05-15 Coal preparation plant - Graphical symbols Appareils utilis b) the symbols should be easy to draw and readily distinguishable from one another; c) the symbols should preferably give some indication of the pri
2、nciple of the operation involved, but should not represent the appearance of any particular type of machine; d) where a single symbol represents a group of items for which separate symbols are standardized nationally, it is preferable that the IS0 symbols are readily distinguishable from any one of
3、the national symbols. It is expected that the general adoption of the basic symbols in this standard will simplify the exchange of information between those concerned with the design, con- struction and operation of coal preparation plant. iii INTERNATIONAL STANDARD IS0 561 : 1989 (El Coal preparati
4、on plant - Graphical symbols 1 Scope This International Standard specifies basic symbols for use in flowsheets (see IS0 924) and other diagrams relating to coal preparation plant. 2 Normative references The following standards contain provisions which, through reference in this text, constitute prov
5、isions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standa
6、rds indicated below. Members of IEC and IS0 main- tain registers of currently valid International Standards. IS0 924 : 1975, Coalpreparation plant - Principfes and conven- tions for flowsheets. IS0 351 l-l : 1977, Process measurement control functions and instrumentation - Symbolic representation -
7、Part 7: Basic re- quirements. IS0 3511-Z : MM, Process measurement control functions and instrumentation - Symbolic representation - Part 2: Exten- sion of basic requirements. IS0 351 l-3 : 1984, Process measurement control functions and instrumentation - Symbolic representation - Part 3: Detailed s
8、ymbols for instrument interconnection diagrams. 3 Convention for drawing of symbols The following conventions shall be adopted for drawing the standard symbols : a) the plant symbols shall be shown by thick lines and the product flow by fine lines; b) in general, the frowlines shall enter the symbol
9、 from above or from the left and shall leave the symbol downwards or to the right; c) where more than one product enters or leaves an item of plant, the number of entry and exit arrows shall be varied accordingly. NOTE - Symbols relating to process controls can be obtained from relevant Internationa
10、l Standards. See for example IS0 351 l-l, IS0 351 l-2 and IS.0 351 l-3. 4 Basic symbols The basic symbols and an alphabetical index are given in the following pages. 1 IS0 561 : 1989 (El Nn 1 ._-. 1 Wagon ._-. Symbol - - 2 Tub u 3 Wagon tippler 0 g 4 Tub tippler 0 g 5 Aerial ropeway -?!7 6 Conveyor
11、h=1, 7 Conveyor, scraper a) One discharge b) Two discharges 7 + a) b) 8 Elevator 2 IS0 561 : 1989 (El No. 9 Item Symbol Conveyor, screw 10 Bunker i! 1 11 Bunker (drainage) 1 1 12 a) Stockpile b) Layered stockpile -f+ + 13 Bucket wheel reclaimer I 14 Feeder L- 15 Picking belt 3 IS0 561 : 1989 (El No.
12、 Item Symbol 16 Picking table (circular) -?- 17 Rotary breaker 9- 18 De-duster -Y 19 Dust aspiration point A 20 Dust collector 21 Crusher 4 ISO 561 :1989 (E) No. 1 Item I Svmbol - - - 22 Pulverizer + 9 23 Screen, grizzly or bar v- 24 Screen a) One under-product b) Two under-product - y b- b) 25 Scre
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