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US 2013/0153486 A1Published application
Rotary Disc Filter and Module for Constructing Same
AssigneeVeolia Water Solutions & Technologies Support
InventorsÅke Danielsson, Åke Ralvert, Emil Svensson, Per Larsson
Life of this patent
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Abstract
A rotary disc filter device includes a rotary drum and one or more disc-shaped filter members secured about the drum. Each disc-shaped filter member includes a filter and a filter support comprising a series of modules. The modules each include a base that is secured to the rotary drum and a support arm projecting outwardly from the base. The modules are interconnected and disposed around the rotary drum.
Claims50
A modular rotary disc filter for filtering a liquid, comprising:
- a. a rotary drum for receiving the liquid and having a plurality of openings for permitting the liquid to flow from the drum;
- b. a drive for rotatively driving the rotary drum;
- c. one or more modular disc-shaped filter members secured around the drum for receiving the liquid from the drum and filtering the liquid;
- d. each disc-shaped filter member including a plurality of modules that form, in part at least, a series of compartments that extend around the drum and form a part of the disc-shaped filter member;
- e. each compartment being bound, at least in part, by opposed edge structures and on opposite sides by two filters;
- f. each edge structure having a length and a substantial open area along the length for permitting liquid communication between compartments such that as the disc-shaped filter member and compartments are rotated, liquid in the disc-shaped filter member moves through the open area in the edge structures and from one compartment to an adjacent compartment;
- and
- g. wherein liquid held in the disc-shaped filter member is filtered by flowing outwardly through the filters on opposite sides of the compartments.
5 more elements
A rotary disc filter for filtering a liquid comprising:
- a. a rotary drum for receiving the liquid and having a plurality of openings for permitting the liquid to flow from the drum;
- b. one or more disc-shaped filter members secured around the drum for receiving liquid from the drum and holding the liquid in a lower portion thereof and filtering the liquid;
- c. each disc-shaped filter member including a plurality of adjoining compartments that are disposed around the disc-shaped filter member and around the drum;
- d. each compartment of the disc-shaped filter member formed by an inner structure disposed adjacent the drum, an outer structure disposed outwardly of the inner structure, opposed edge structures, and a pair of filters disposed on opposite sides of the compartment;
- e. each edge structure including a length and an open area along the length that is effective to permit liquid communication between the compartments of the disc-shaped filter member such that as the disc-shaped filter member and compartments thereof are rotated, liquid in the disc-shaped filter member moves through the open areas in the edge structures from one compartment to an adjacent compartment;
- and
- f. wherein liquid held in the disc-shaped filter member is filtered by flowing outwardly through the filters disposed on opposite sides of the compartments.
4 more elements
A modular rotary disc filter comprising:
- a. a rotary drum for receiving and holding liquid;
- b. a drive for rotatively driving the rotary drum;
- c. one or more disc-shaped filter members secured about the drum and extending outwardly therefrom, each disc-shaped filter member being rotatable with the drum;
- d. each disc-shaped filter member including a modular filter frame made up, in part at least, by a series of like and connected modules;
- e. the disc-shaped filter member including a series of compartments that are disposed around the disc-shaped filter member wherein each compartment is defined, in part at least, by two consecutive like modules;
- f. each module comprising:
- i. a base;
- ii. a support arm projecting outwardly from the base;
- g. filters supported by the modules and disposed on opposite sides of each compartment for filtering liquid;
- and
- h. each support arm having a substantial open area for permitting liquid communication between compartments such that as the disc-shaped filter member and compartments are rotated, liquid in the disc-shaped filter member moves through the open areas in the support arms and from one compartment to an adjacent compartment.
8 more elements
Dependencies are inferred from the claim text.