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US 8,409,436 B2Granted
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
Estimating the term…
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.
Claims27
A rotary disc filter for filtering a liquid, comprising:
- (a) a rotary drum having an inlet for receiving the liquid to be filtered, the rotary drum further including an outer surface having a plurality of openings for permitting the liquid to flow from the rotary drum;
- (b) a drive for rotatively driving the rotary drum;
- (c) one or more disc shaped filter members secured on the drum and rotatable with the drum as the drum is driven;
- (d) each disc shaped filter member including a series of connected plastic modules and a plurality of filter segments disposed on each side of the disc shaped filter member;
- (e) a series of compartments disposed between the plastic modules and positioned around the drum for holding liquid to be filtered and wherein each compartment is defined in part at least by two consecutive modules and a pair of filter segments;
- (f) each plastic module comprising:
- i. a plastic base secured on the rotary drum and including an opening generally aligned with at least one of the openings in the outer surface of the rotary drum such that liquid flows from the drum, through the opening in the outer surface of the drum and through the opening in the base into at least one of the compartments;
- ii. the base including a plate;
- iii. the base including opposite ends and wherein each end of the base connects to the end of another base in end-to-end relationship;
- iv. a plastic support arm integral with the base and projecting outwardly from the base;
- v. a plurality of slots forming a part of the module for receiving and retaining portions of a plurality of the filter segments;
- (g) a series of fasteners for securing the bases of the modules together in end-to-end relationship around the rotary drum.
9 more elements
A rotary disc filter for filtering a liquid comprising:
- a rotary drum having an inlet for receiving liquid to be filtered and a surface having a plurality of openings;
- a drive for rotatively driving the rotary drum;
- at least one disc shaped filter member supported on the drum and rotatable with the drum;
- a series of plastic modules connected together around the drum and forming a part of the disc shaped filter member;
- a series of filter segments disposed on each side of the disc shaped filter member for filtering liquid contained in the disc shaped filter member;
- each module including a base and an arm extending outwardly from the base, each base including an opening generally aligned with at least one of the openings in the surface of the rotary drum such that liquid flows from the drum, through an opening in the surface of the drum and through the opening in the base;
- the bases of the modules being connected together around the drum;
- a series of compartments forming a part of the disc shaped filter member and disposed around the drum for receiving liquid to be filtered from the rotary drum;
- each compartment being generally defined by two consecutive plastic modules and two filter segments retained by the two consecutive modules;
- and
- wherein the opening in the base of each module is configured to permit liquid to flow from the drum, through the opening in the base, and into at least one compartment after which the liquid is filtered by flowing from the compartment through the filter segments that at least partially define the compartment.
8 more elements
Dependencies are inferred from the claim text.