A cylindrical filter screen and screen changing device belongs to the filter screen and screen changing device in plastic extrusion blow molding machines. A filter screen sleeve, a splitter cone, a filter screen, a bent neck, a screen changing bolt and a screen pulling bolt are arranged in the connecting body between the barrel and the machine head. The filter screen in front of the flat splitter plate is removed, a filter screen is sleeved outside the cylinder of the filter screen sleeve, and materials enter the inner cavities of the filter screen sleeve, the bent neck and the machine head connecting body through the flat splitter plate and the inner cavity of the connecting body, and are sent to the machine head. The filtering area of the filter screen of the present utility model is enlarged, and the whole device can be pulled out by the pulling bolt through rotating the screen changing bolt, realizing rapid screen changing.
Country Code: CN
Application Number: CN95234069.0
