Precautions for piping design of melt pump

When designing the melt pump piping, we should pay attention to the following matters:

A, reasonable selection of pipe diameter, large pipe diameter, low liquid flow speed, low resistance loss under the same flow, high price and small pipe diameter, will lead to a sharp increase of resistance loss, increase the lift of the high viscosity pump, increase the power of the matching belt, increase the cost and operating cost.

B, the melt pump discharge pipe and its pipe joints should take into account the maximum pressure that can be sustained.

C, melt pump piping layout should be arranged as far as possible into a straight pipe, minimize the accessories in the pipe and minimize the length of the pipe. When it is necessary to turn, the bending radius of the elbow should be 3~5 times the diameter of the pipe, and the angle is as much as 90 degrees centigrade as far as possible.

D, high viscosity melt pump discharge side must be equipped with valve (ball valve or globe valve, etc.) and check valve. The valve is used to regulate the working condition of the high viscosity melt pump. The reverse check valve prevents the high viscosity melt pump from reversing when the liquid reflows, and makes the high viscosity melt pump avoid the blow of water hammer.