First,draw the outline of the pump body of the water ring vacuum pump,paying attention to the characteristic of eccentric installation of the impeller.You can simply draw the approximate shape and position of the impeller,and if possible,mark the direction of rotation of the impeller.Determine the contour ratio based on the actual shape of the pump body.Different models may have differences in size and structure,but the overall shape of the pump body is similar.You can refer to its product structure diagram to determine the basic drawing ratio and shape details.Then mark the positions of the suction and exhaust holes on the installation diagram of the water ring vacuum pump,as they play a crucial role in the gas inlet and outlet during the pump's operation.
According to the position relationship of each component determined earlier,the installation drawing of water ring vacuum pump should draw the connecting pipes,and the lines of the pipes should be clear.If there are pipes with different diameters,they should be drawn according to the actual proportion or relative proportion.At the pipeline location where valves need to be installed,the shape of the valve should be accurately drawn.Commonly used valves such as ball valves and gate valves should be drawn according to their basic shape,and the type or function of the valve can be marked.