Device for the continuous filteration of molten plastic material

1) a device for filtering molten plastic material, comprising:

• a body;
• a cavity inside the body that creates a chamber;
• a hollow perforated cylinder that rotates around a main axis thereof inside said chamber;
• an inlet opening on the body for putting the plastic material to be filtered into the chamber;
• an outlet opening wherein the filtered plastic material comes out from the body,
• a connection opening that connects the outside of the body with said chamber on the inside of the body;
• a filtration mesh belt that enters the chamber through the said connection opening and exits through said connection opening after having carried out filtration;
• a section of inlet-mesh that enters the chamber from outside of the body through an inlet path into the connection opening;
• a section of adjoining-mesh that remains attached to the outer surface of said hollow perforated cylinder;
• and
• a section of outlet-mesh that exits the body from the chamber through an outlet path in the connection opening;
• wherein said inlet-mesh, said adjoining-mesh, and said outlet-mesh are all a continuous mesh;
• a mobile cone that creates, together with the body, said inlet path and the said outlet path, wherein said cone can move between a first closing position and a second opening position on the connection opening that connects the outside of the body with said chamber and that, in the first closed position, closes the inlet path with a section of inlet-mesh interposed and closes the outlet path with a section of outlet-mesh interposed, and in the second opening position opens the inlet path and opens the outlet path, wherein said filtering mesh strip can slide in said openings;
• wherein said inlet path is a first channel between the outside of the body and the inside of the chamber, with a width corresponding to the width of the mesh strip and enclosed between the body itself and a first side wall of the cone;
• wherein said outlet path is a second channel between the outside of the body and the inside of the chamber, with a width corresponding to the width of the mesh strip and enclosed between the body itself and a second side wall of the cone;
• and
• wherein said mobile cone has a base wall between said first and said second side walls, facing the inside of the chamber, and facing the perforated hollow cylinder.