Device for extruder is dried from mode

The utility model discloses a device for extruder is dried from mode, including the fan, wind pressure sensor and controlling means at extruder foaming device air intake are installed to the pipeline of connection fan and extruder foaming device air intake, the fan is centrifugal blower, fan fixed mounting is on the extruder bottom plate, wind pressure sensor signal end is connected with controlling means signal input part, controlling means signal output part is connected with the fan control end, through using the wind pressure sensor to detect the wind pressure of foaming device air intake department to give PLC the control unit with data transfer, PLC the control unit compares the data that the wind pressure sensor detected with design data, and passes through the wind pressure in current controller control fan exit, guarantees that the amount of wind and the wind pressure supplied with in the foaming process remain the unanimity throughout, can satisfy the designing requirement in addition, improves foaming quality and sealing strip shaping quality