Treating paint waste solids
AssigneeCarrier Drysys Limited
InventorsIvan Bloomer, Ronald William Young
Life of this patent
Estimating the term…
Abstract
Waste paint which is contained in an aqueous medium which flows from a paint spraying booth is collected by apparatus which comprises a vessel which is located outside the booth and has at the lower portion thereof an inlet for paint laden aqueous medium or for scum from the surface of aqueous medium in a flotation tank, and an outlet at the lower portion for the passage of aqueous medium from the vessel. A paint solids outlet is associated with the upper portion of the vessel and fluid pressure is applied to a raft of paint solids accumulated in the vessel to cause the flow of paint solids from the vessel into a container.
Claims29
A method of collecting and disposing of waste paint solids contained in an aqueous medium which flows from a paint spray booth into a water container located beneath the booth, the method comprising the steps of:
- flowing paint laden aqueous medium from the water container into the lower portion of a vessel which has sides, a top and a bottom and which is located outside the booth;
- retaining the aqueous medium in the vessel for a residence time sufficient to permit paint solids to accumulate as a raft on the surface of the aqueous medium in the vessel;
- and
- by applying fluid pressure to the raft causing the accumulated paint solids to flow from an outlet at an upper portion of the vessel into a container.
Apparatus for collecting and disposing of waste paint solids contained in an aqueous medium which flows from a paint spraying booth into a water container located beneath the booth said apparatus comprising:
- a vessel located outside a paint spray booth and having sides, a top and a bottom;
- an inlet at a lower portion of the vessel for receiving paint laden aqueous medium from a water container located below the paint spray booth;
- an outlet at a lower portion of the vessel for the passage of aqueous medium from the vessel;
- a paint solids outlet associated with an upper portion of the vessel;
- means operable to retain the aqueous medium in the vessel for a residence time sufficient to permit paint solids to accumulate as a raft on the surface of the aqueous medium in the vessel;
- and
- means operable to apply fluid pressure to the raft thereby to cause the flow of paint solids from the paint solids outlet into a container.
A method of collecting and disposing of waste paint solids contained in an aqueous medium which flows from a paint spray booth into a water container located beneath the booth, the method comprising the steps of:
- flowing paint laden aqueous medium from the water container into the lower portion of a vessel which has sides, a top, a bottom and first and second side-by-side compartments, wherein the first compartment receives the paint laden aqueous medium and accumulates the paint solids;
- locating a waste container in the second compartment with a mouth of the waste container in close proximity with an opening common to the first and second compartments;
- retaining the aqueous medium in the first compartment for a residence time sufficient to permit paint solids to accumulate as a raft on the surface of the aqueous medium in the first compartment;
- and
- applying fluid pressure to the raft causing the accumulated paint solids to flow through the opening and into the waste container.
Apparatus for collecting and disposing of waste paint solids contained in an aqueous medium which flows from a paint spraying booth into a water container located beneath the booth, said apparatus comprising:
- a vessel located outside a paint spray booth and having sides, a top, a bottom, and first and second side-by-side compartments, said first compartment arranged to accumulate paint solids and the second compartment carrying a waste container whose mouth is located in close proximity with an opening common to the first and second compartments;
- an inlet situated at a lower portion of the first compartment for receiving paint laden aqueous medium from the water container;
- means operable to retain the aqueous medium in the first compartment for a residence time sufficient to permit paint solids to accumulate as a raft on the surface of the aqueous medium in the first compartment;
- and
- means for applying fluid pressure to the raft to cause paint solids to flow through the opening and into the waste container.
Dependencies are inferred from the claim text.