Expansion device with a trigger valve for TRANSFER melt from the screw extruder system to pre-processing bulk material comprising a throttling device with a trigger valve and method for transmitting the melt from the screw extruder via a throttling device With starting valves

摘要

The throttling device with a starting valve (4) includes a housing (24), in which a cylindrical compartment (25) of the housing is made and a switching element (26) is installed with the possibility of changing the position between the release position and the gear position. In the outlet position, the switching element (26) forms an outlet (34) that connects the inlet (33) to the outlet (35). In the transmission position, the switching element (26) forms a passageway (36) which connects the inlet channel (33) with the transmission channel (37). The throttle element (38) is installed in the through passage (36) so that it can be changed its position relative to the switching element (26). Due to this, throttling in the required mode of the melt flow (23) passing through the passage channel (36) is provided. The throttling device with a starting valve (4) is designed in a simple, compact and reliable design. The operation of the throttling device with the start valve (4) and the associated screw extruder (3) is simple and energy efficient.