Title:
【発明の名称】らせん濾過装置
Document Type and Number:
Japanese Patent JP2577827
Kind Code:
B2
Abstract:
PCT No. PCT/CH90/00022 Sec. 371 Date Nov. 9, 1990 Sec. 102(e) Date Nov. 9, 1990 PCT Filed Jan. 31, 1990 PCT Pub. No. WO90/09229 PCT Pub. Date Aug. 23, 1990.A spiral filtering device disposed within a frame consisting of two draw bars and two end pieces. The spiral filter consists of at least one spiral plate and at least two support plates with attached filter plates inserted between two end plates. On each of their plane machined surfaces, the spiral plates have a spiral groove of approximately semicircular cross-section. In addition, each surface of the spiral plate has a round depression with a boss in the shape of the bottom of a bottle. The groove is surrounded by a circular channel which is also recessed. The helicity of both grooves on the surfaces of the spiral plates is the same. The outer ends of the grooves are interconnected by a drilled channel at a shallow angle to the surface of the spiral plate. The inner ends of the grooves are connected to their respective recesses by a drilled channel running substantially parallel to the surface of the spiral plate. With the exception of the channel, the end plates have the same structural characteristics as a side of the spiral plate abutting the respective end plate.
Inventors:
UINTSUERAA HAINTSU BIITO
Application Number:
JP50198790A
Publication Date:
February 05, 1997
Filing Date:
January 31, 1990
Export Citation:
Assignee:
BAIOENJINIARINGU AG
International Classes:
B01D29/01; B01D29/05; B01D29/54; B01D46/10; B01D63/08; B01D65/08; (IPC1-7): B01D63/08; B01D29/01; B01D46/10
Domestic Patent References:
| JPS5775113A |
Other References:
【文献】米国特許3398834(US,A)
Attorney, Agent or Firm:
Shigeru Yagita (3 outside)