Research Of Environmental Protection Filler's Mold Design And Extrusion Technics

Filler is most important in biomembrane technology when used in biomembrane method of wastewater treatment. It provides the growth space for the microorganism and intercepts suspension,so its Form and performance directly influences the efficiency of water treatment.Traditional biomembrane filler used in wastewater treatment has many deficiencies on economic environmental protection, operations management, energy consumption etc. Polyolefin short-tube suspended filler has conquered such deficiencies, it has many advantages such as hign production efficiency, high intensity , ageing-resistant , motive force consumes little and easy to use.However its Only insufficient is the surface area is Smaller,so the efficiency of water treatment is influenced.This paper increase the efficiency of water treatment through setting up internal and external muscles and augment specific surface area. Establishment of muscle make the structure of filler complicated, so that the mold design expected relatively much too. In mold design, form and size of every module in extrusion die need to be verified and obtained through calculating and experiment. Sizes of die and mandrel are the key among them. Traditional way to stereotype is unable to realize because of the external muscles are more and small (only 0.8mm thinck). The cooling room is made of stereotypes which are Separateed by many gaskets, cooling water can be inputde and outputed and the the result is better.Temperature, pressure, vacuum degree, the speed of extrusion and traction and other process conditions influence on filler's process are studied during the filler's extrusion process. In addition,. The rule between the configuration of extrusion die and the fluidness of polymer is found By the research on the filler's extrusion moulding. By the rule, we design and ameliorate the mold, regulate technics, manufacture perfect product.