GB/T 24352-2020Graphical symbols for feed processing equipment (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 24352-2009 "Graphic Symbols for Feed Processing Equipment". Compared with GB/T 24352-2009, this standard The main technical changes are as follows.

---Added terms and definitions (see Chapter 3);

---Added "the graphic symbols of feed processing equipment can be drawn using principle graphic symbols or characteristic shape graphic symbols or a combination of both Way to draw. Principle type should be used for general transportation equipment, pipelines, liquids, gas transportation pipelines, valves, pumps, meters, etc. "Graphic symbols" (see 4.1);

---In the 2009 edition 3.3, "there are no national or industry standards in principle, drawn according to the composition of the main working parts of the equipment" Amend to read. "If there is no national or industry standard, it should be drawn according to the working principle of the equipment or the main features of the equipment shape or a combination of both Way of drawing" (see 4.4, 3.3 of the 2009 edition);

---Added regulations on the line types of different material flow lines when drawing process flow charts and the drawing method when these process lines cross; Added provisions for the representation method of the process line when the material process line needs to cross many equipment and facilities (see 4.5);

---Dividing the graphic symbols of feed processing equipment (Table 1 of the 2009 edition) into general equipment graphic symbols of feed processing (see Table 1) and feed Graphic symbols for processing equipment (see Table 2);

---Added 48 principle graphic symbols for feed processing equipment (see Table 1 and Table 2);

---Added 17 graphical symbols for the characteristic shape of feed processing equipment (see Table 2);

---Modified the principle graphic symbols of 44 feed processing equipment (see Table 1 and Table 2, Table 1 of the 2009 edition);

---Deleted 43 graphic symbols for feed processing equipment (see Table 1 in the 2009 edition);

---Modified the application example of the graphic symbols of feed processing equipment (see Appendix A, Appendix A of the 2009 edition).

1 Scope

This standard specifies the graphic symbols for commonly used processing equipment in the feed industry.

This standard is applicable to drawing the process flow chart of feed processing.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.

For undated references, the latest version (including all amendments) applies to this document.

GB/T 4457.4 Mechanical drawing drawing method drawing line

GB/T 18695 Terminology for feed processing equipment

3 Terms and definitions

The terms and definitions defined in GB/T 18695 apply to this document.

4 General rules

4.1 The graphic symbols of feed processing equipment can be drawn by using principle graphic symbols or characteristic shape graphic symbols or a combination of both. For general-purpose transportation equipment, pipelines, liquids, gas transportation pipelines, valves, pumps, meters, etc., principle-type graphic symbols should be used.

4.2 The graphic symbols of the feed processing equipment should be drawn according to the scale specified in this standard. The graphic symbols of the equipment are shown in the feed processing flow chart. The size should be drawn in an appropriate scale according to the size of the device it represents.

4.3 The line type of the graphic symbols shall comply with the provisions of GB/T 4457.4.

4.4 The graphic symbols of feed processing equipment not specified in this standard can be implemented in accordance with the corresponding standards if there are national or industry standards; there is no national Or industry standards, it should be drawn according to the working principle of the equipment or the main features of the equipment shape or a combination of the two. The graphics should be as simple and clear as possible.

4.5 When drawing the process flow chart, the line type of the material flow line should be thick solid line, and the line type of other process lines should follow the provisions in 5.1.when When two flow lines in the flow chart cross, if the flow lines are not connected in the actual space, you can choose the symbol "" or "" to indicate; The process line is connected in the actual space and can be indicated by the symbol ""; when the material process line needs to cross many equipment and facilities, it can also be directly in the flow At the starting equipment or facility of the route, use arrows and text to indicate the equipment or facility to which the material flows.

5 Graphical symbols for feed processing equipment