发明名称 |
METHOD AND APPARATUS FOR THE THICKENING OF FIBER SUSPENSIONS |
摘要 |
The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through t he outlet (20). The cleaning member comprises a rotating shaft (30), on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.< /SDOAB>
|
申请公布号 |
CA2344940(C) |
申请公布日期 |
2005.11.15 |
申请号 |
CA19992344940 |
申请日期 |
1999.09.22 |
申请人 |
ANDRITZ-AHLSTROM OY |
发明人 |
QVINTUS, HARRI;LJOKKOI, RISTO;SIIK, SAMI;LAINE, ANTERO;PIKKA, OLAVI |
分类号 |
D21C9/18;D21F1/66;(IPC1-7):D21C9/18 |
主分类号 |
D21C9/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|