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US 2019/0314743 A1Published application
Rotary disc filter having a backwash system that includes a compact nozzle support structure
AssigneeVeolie Water Solutions & Technologies Support
InventorJohan Gustav Alexander Jibert
Life of this patent
Estimating the term…
Abstract
A rotary disc filter having a backwash system that includes a series of feed pipes that project into and between successive filter discs that are mounted on a rotatable drum. Connected to an outer terminal end portion of the feed pipes is a series of nozzle holders. Each nozzle holder includes a main conduit, a series of branch conduits that project outwardly from the main conduit, and a connector for connecting the nozzle holder to a respective feed pipe. A series of detachable nozzles are secured to the outer terminal ends of the branch conduits.
Claims29
A rotary disc filter for filtering water and removing suspended solids from the water comprising:
- a rotary drum for receiving water and having a plurality of openings for permitting the water to flow from the drum;
- a drive for rotatively driving the rotary drum;
- a series of disc-shaped filter members secured around the drum for receiving water from the drum;
- filter media disposed on opposite sides of the disc-shaped filter members for filtering the water as the water flows from the disc-shaped filter members outwardly through the filter media to yield filtered water;
- a backwash system for backwashing the filter media including:
- a series of backwash feed pipes configured to receive a backwash;
- a plurality of nozzle holders operatively connected to the feed pipes for receiving backwash therefrom;
- each nozzle holder comprising a single piece of molded plastic and including:
- an elongated main conduit having an outer wall and configured to receive the backwash from a respective feed pipe;
- a plurality of branch conduits integral with the outer wall of the main conduit and projecting outwardly from the outer wall of the main conduit;
- each branch conduit including an outer end portion and a through opening configured to channel backwash from the main conduit through the branch conduit;
- wherein the main conduit, outer wall and branch conduits comprise a single piece of molded plastic;
- and
- a nozzle secured to the outer end portions of the branch conduits.
11 more elements
A rotary disc filter for filtering water and removing suspended solids from the water comprising:
- a rotary drum for receiving water and having a plurality of openings for permitting the water to flow from the drum;
- a drive for rotatively driving the rotary drum;
- a series of disc-shaped filter members secured around the drum for receiving water from the drum;
- filter media disposed on opposite sides of the disc-shaped filter member for filtering the water as the water flows from the disc-shaped filter members outwardly through the filter media to yield filtered water;
- a backwash system for backwashing the filter media, the backwash system including:
- at least one backwash feed pipe configured to receive a backwash;
- a first nozzle holder operatively connected to the backwash feed pipe for receiving backwash therefrom;
- the nozzle holder including an elongated main conduit and a series of branch conduits projecting outwardly from the main conduit;
- wherein at least two of the branch conduits project generally in opposite directions from the main conduit of the nozzle holder;
- the branch conduits including terminal end portions and a throughway configured to channel backwash from the main conduit through the throughway and out the branch conduits;
- detachable nozzles secured to the terminal end portions of the branch conduits;
- and
- a connector disposed on the nozzle holder and configured to connect the nozzle holder to the feed pipe or to another nozzle holder.
10 more elements
A rotary disc filter for filtering water and removing suspended solids from the water comprising:
- a rotary drum for receiving water and having a plurality of openings for permitting water to flow from the drum;
- a drive for rotatively driving the rotary drum;
- a series of disc-shaped filter members secured around the drum for receiving water from the drum;
- filter media disposed on opposite sides of the disc-shaped filter member for filtering the water as the water flows from the disc-shaped filter members outwardly through the filter media to yield filtered water;
- a backwash system for backwashing the filter media, the backwash system including:
- a series of backwash feed pipes configured to receive a backwash, each feed pipe including an opening;
- a plurality of nozzle holders operatively connected to the feed pipes for receiving backwash therefrom, the nozzle holder including:
- an elongated main conduit;
- a plurality of branch conduits projecting outwardly from the main conduit and including outer end portions;
- nozzles secured to the outer end portions of the branch conduits;
- each nozzle holder having an inner end;
- a connector disposed adjacent the inner end of the nozzle holder;
- wherein the inner end of the nozzle holder projects into the opening in the feed pipe;
- and
- wherein the connector is configured to be secured to the feed pipe and configured to support the nozzle holder in cantilever fashion and to assist in connecting the nozzle holder to the feed pipe such that the nozzle holder is communicatively connected to the feed pipe in order that backwash can flow from the feed pipe into the inner end of the nozzle holder.
12 more elements
A rotary disc filter for filtering water and removing suspended solids from the water comprising:
- a rotary drum for receiving water and having a plurality of openings for permitting water to flow from the drum;
- a drive for rotatively driving the drum;
- a series of disc-shaped filter members secured around the drum for receiving the water from the drum;
- filter media disposed on opposite sides of the disc-shaped filter member for filtering the water as the water flows from the disc-shaped filter members outwardly through the filter media to yield filtered water;
- a backwash system for backwashing the filter media, the backwash system including:
- a series of backwash pipes configured to receive a backwash, each feed pipe including an opening;
- an elongated nozzle holder operatively connected to the feed pipe for receiving backwash from the feed pipe;
- the nozzle holder including an elongated plastic main conduit having an outer wall and a plurality of plastic branch conduits permanently secured to the outer wall and projecting outwardly from the outer wall of the main conduit;
- each branch conduit including a through opening configured to permit backwash to flow from the main conduit through the through opening;
- a nozzle disposed on a terminal end portion of each branch conduit;
- and
- wherein the backwashing system is configured such that backwash flows into the feed pipe, into the main conduit, through the through opening in the branch conduits and out the nozzles secured to the terminal end portion of the branch conduits.
9 more elements
Dependencies are inferred from the claim text.