How to draw a process flow diagram

A flowchart is just a flowchart; there’s little need to consider whether it’s viewed from the front or from above – one simply needs to draw out the process in the order of the materials involved. The front and top views refer to the layout diagrams of the equipment and pipelines. In my opinion, the original poster aims to simply represent the workshop’s processes, equipment layout, and piping layout in one diagram – as long as they understand it themselves is sufficient; I suggest drawing an axonometric diagram. It’s pretty much like a 3D version – everything is clearer – but it requires better drawing skills and a greater sense of depth from the individual.

Reply to 2# come_now: How many drawings are needed for the axonometric view? I want to draw a simple process flow diagram to show the path of each pipe, as well as the path of the pipes inside the tank, but I think it’s too difficult to represent all that in one diagram.

Reply to 2# come_now: There are several rectangular channels in the workshop, with pipes on both sides of them; there are also pipes beside the walls of these channels. I’m not sure whether to draw a top view, a left view, or a front view of the channels.

There’s no need to draw flowcharts in such a complicated way; it’s sufficient to simply connect the pipes and equipment, so that everyone can see them clearly. There’s no need for any top-down views or tests either – it’s enough to understand which pipe is connected to which device... This is just my personal opinion for reference only

A system diagram that uses graphic symbols to represent the mechanical equipment used in the process flow and their interconnections. 　　 Piping & Instrument Diagram, also known as a process flow diagram with control points. This includes all chemical processing equipment such as pipelines, reactors, storage tanks, pumps, heat exchangers, etc., as well as various valves. 　　Other common abbreviations include PFD (Process Flow Diagram), and MBD (Material Balance Diagram). The procedures for creating process flow diagrams are as follows: First, select the drawing size, title bar, etc ； 　　 Secondly, draw the main equipment ； 　　 Once again, draw the pipeline ； 　　 Then, add valves, instruments, fittings, etc., and include annotation information ； 　　 Finally, verify the correctness of the drawings ； A flowchart does not have concepts such as front view, top view, or side view; it merely shows the interconnections between various elements and the sequence of processes, without the need to depict spatial relationships. It is a planar diagram. The original poster has complicated a simple issue!

The process flow only needs to illustrate the material flow!

Reply to 6# Antenna Baby No.1: The slots are rectangular in shape, and there are a dozen or so of them placed closely together. How can we represent both the pipes at the lowest point within each slot and those along the slot walls simultaneously? I would appreciate some guidance.

I guess what lz wants to draw isn’t a flowchart, but rather a piping diagram

Reply to 8# Swordsmen2009: Represent the tank as a rectangle; draw the flow direction of the pipes inside the tank simply within that rectangle, and indicate the pipes at the tank walls at corresponding positions along the edges of the rectangle. How is it possible not to be able to draw? In one of the projects I designed, there was a unit that required 50 extraction tanks arranged in a certain layout; each tank contained coiled tubes, and it had 5 feed inlets and 1 outlet per tank. It’s no problem to draw detailed PID flow diagrams, equipment layout diagrams, and piping layout diagrams. I don’t understand what the original poster is questioning?

It is recommended to create a 3D diagram, which will include the layout and the flow.