With the development trend of industrial production and aquaculture, water pollution is more obvious, and the relative density of breeding is gradually increasing, and the area that can be used for aquatic product breeding is getting lower and lower. And marine pedal has the advantages of low project investment, high production volume, maneuverability and good effect, and is one of the reasonable ways to deal with the problem, and has a general application prospect. However, the current design concept of the marine pedal for farmed fish is not scientific, and some use the solid core structure, which improves the net weight of the marine pedal, and clearly puts forward more regulations for the floating body; Some use hollow structure, which alleviates the net weight of the pedal, but will greatly reduce the tensile strength of the pedal, which directly affects the routine operation of the staff.

Adaptability and composition of the extruder of the marine pedal production line equipment is the prerequisite to ensure the quality of co-extruded hollow plastic products. To have a complete understanding of the objectives of the production and processing of the multi-layer co-extrusion hollow plastic molding machine (including scraping handicrafts, the characteristics of raw materials in each layer of handicrafts and the adhesive energy in the middle of each layer of raw materials, and the characteristics of tackifiers), marine pedals, marine pedalsThe production line equipment then designs and conceives an extruder that meets the target of plasticized raw materials required by the environment, and defines the total number and form of extruders that must be configured.

The extruder should be able to adapt to the environment, the flow rate is not the same, the raw material plasticization is not the same, and the production efficiency should be higher than that of the standard extruder. The construction of the screw and barrel of the equipment of the marine pedal production line is accompanied by the different characteristics of the materials produced and processed. Each extrusion device should be equipped with an automatic control system for quantitative analysis of the feeding hopper, which can very well control the feeding volume.