Double tee plastic extruder

• Main Author: CHEN YOUCHUN
• Format: Patent
• Language: English
• Published: 22.07.2015
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention provides a plastic extruder, the filter net of which can be replaced without halting. The double tee plastic extruder comprises a plastic extrusion opening, wherein the plastic extrusion opening is joint with filter components with fluid channels, a filter net is arranged on each fluid channel; the outlet of each filter component is communicated with a mold head. The double tee plastic extruder is characterized in that at least two sets of the filter components are arranged; a rotatable first reversing valve is arranged at the inlet of each filter component; the first reversing valve rotates to switch the channel of the plastic extrusion outlet and the filter component outlet; the fluid channels of the filter components are independent from each other. By alternately using double tees and using a control valve to control the material direction, the filter net can be replaced without halting the work of the whole machine; as reverse filtering is adopted, the net replacement workload is greatly reduced.