Patent ID: 6719454
Filing Date: 2004-04-13
Classification: B02C,B29B,B29C,Y02W

Abstract:
Device for preparing plastic material, in particular, thermoplastic material, which comprises a receptacle (1) for the material to be treated, in which tools (21) are provided to act onto the material which rotate about a vertical axis (8) and are driven by a shaft (4) passing through the bottom (3) of the receptacle (1), the tools being supported by a support disc (9), and further comprising, for discharging the material from the receptacle (1), a screw (17), the housing (16) of which communicates with a discharge opening (15) of the receptacle (1), the discharge opening (15) being below the path of rotation of the tools (21) and lower than the support disc (9), and additional moving tools (12) being provided below the support disc (9) within the receptacle (1) for conveying the material into the discharge opening (15), characterized in that the upper inner space portion (26) of the receptacle (1), which exists above the support disc (9), communicates with a lower inner space portion (10) of the receptacle (1), being below the support disc (9) in the same receptacle (1), via a free annular gap (11) between the outer circumference of the support disc (9) and the lateral wall (2) of the receptacle (1), in which lower portion the additional moving tools (12) and the discharge opening (15) are located, a proportion of the material in the upper inner space portion (26) reaching the lower inner space portion (10) through the annular gap (11).