Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (CA2288934) BAR SCREEN WITH ROTATING RAKES

Office : Canada
Application Number: 2288934 Application Date:
Publication Number: 2288934 Publication Date: 12.11.1998
Grant Number: Grant Date: 17.12.2002
Publication Kind : C
Prior PCT appl.: Application Number:IB1997000880 ; Publication Number: Click to see the data
IPC:
B01D 29/44
B01D 29/01
B01D 29/03
B01D 35/14
E02B 8/02
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
29
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/-B01D27/170;   Filtering elements therefor
44
Edge filtering elements, i.e. using contiguous impervious surfaces
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
29
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/-B01D27/170;   Filtering elements therefor
01
with flat filtering elements
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
29
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/-B01D27/170;   Filtering elements therefor
01
with flat filtering elements
03
self-supporting
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
35
Filtering devices having features not specifically covered by groups B01D24/-B01D33/, or for applications not specifically covered by groups B01D24/-B01D33/230; Auxiliary devices for filtration; Filter housing constructions
14
Safety devices specially adapted for filtration; Devices for indicating clogging
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
B
HYDRAULIC ENGINEERING
8
Details of barrages or weirs
02
Sediment base gates; Sand sluices; Structures for arresting waterborne material
CPC:
B01D 29/01
B01D 29/445
B01D 29/6484
B01D 35/14
E03F 5/14
Applicants: HEADWORKS INC.
Inventors: MAHR, GERNOT
Priority Data:
Title: (EN) BAR SCREEN WITH ROTATING RAKES
(FR) GRILLE A BARREAUX POURVUE DE RATEAUX ROTATIFS
Abstract: front page image
(EN) A mechanically raked screen system is used for preliminary waste water treatment. A screen (2) is formed of a multiplicity of mutually parallel screen bars (14). The screen bars (14) are oriented substantially transversely relative to a flow direction of a flowing liquid and forming screen spaces of a given width therebetween. A rake assembly rakes the screenings from the screen (2). The rake assembly includes two endless chains (4) which are traveling about sprocket wheels (5) disposed laterally of the screen (2), and a rake (3) attached to and extending between the claims. The rake (3) is oriented substantially perpendicularly to the screen (2) and travels with the chains (4) for repeatedly raking the screen (2). The tynes (10) of the rake (3) are integrally formed from a single metal piece together with the rake plate (11). The vertical screen bars (14) have a trapezoidal cross section, such that the leading side facing against the flow of the waste water is about twice as wide as the trailing side.


Also published as:
CZPV1999-3882SK150899EP0984824DE000069709790AU1997032712WO/1998/050132