Latching Drum Lid With Integral Exhaust Hood

a drum lid and integral technology, applied in the direction of lids, lids/covers that cannot be removed, packaging, etc., can solve the problems of not being able to remain closed, flammable vapors, and requiring significant floor space to install

Inactive Publication Date: 2011-04-28
NEW PIG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]These and other aspects of the present invention will be more f

Problems solved by technology

Making the lids easy to remove and reseal after frequent deposits into the hazardous waste drums has been an ongoing issue.
While these latching lids with continuous gaskets and bolt or lever closed attachment rings reduce vapor emission of the hazardous waste when the lid is closed, they do not account for vapor emission when the lid is open.
Hazardous emissions include flammable vapors, gases, fumes, mists, dusts, and volatile or airborne materials posing a health hazard, such as toxic or corrosive materials.
Placement of an exhaust hood behind a drum in a satellite accumulation area allows easy access to the lid but requires significant floor space to install.
If the lid is hinged, the lid also tends to block the exhaust flow.
Unfortunately, the design would not remain closed if knocked over since neither the system nor lid are attached to the drum or use a continuous gasket.
In addition, the ventilation opening in the design is blocked when the lid is open, which greatly reduces its ability to pull the vapors away from the user.
Finally, the opening is not large enough to accommodate five gallon pails.
This design is costly to manufacture, difficult to maintain and does not accommodate five gallon pails.

Method used

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  • Latching Drum Lid With Integral Exhaust Hood
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  • Latching Drum Lid With Integral Exhaust Hood

Examples

Experimental program
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Embodiment Construction

[0029]In one aspect, the invention comprises a circular latching drum lid with a continuous gasket enclosed within an outer wall. The internal space defined by the inner and outer circular walls composes the exhaust hood. The outer wall includes, for example, a 4 inch outside diameter (OD) coupler for attachment to an exhaust duct. If the outer wall is higher than the inner wall, it helps to contain and remove vapors that are both heavier and lighter than air. If the inner wall is extended below the surface of the base lid, it would help to limit the amount of vapor escaping by creating a baffle. This extension, however, would also restrict the effective height of the collection drum. A diffuser screen placed between the two walls would prevent small papers and debris from entering the ductwork. A diffuser screen would also help to more evenly distribute airflow around the exhaust hood. The assembly is then attached to an open-head dram with a bolt-closed attachment ring or other ty...

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PUM

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Abstract

An apparatus for attaching to an opening of a drum that includes a lid, a base for attaching to the opening of the drum, a circular inner wall formed on the base, a circular outer wall formed on the base and extending between the base and the lid, the circular outer wall being circumferentially spaced about the circular inner wall and defining an open space therebetween, and an exhaust opening formed on an outer surface of the circular outer wall.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61 / 169,408 filed Apr. 15, 2009, which is fully incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The invention relates generally to a latching drum lid with integral exhaust hood.[0003]Management of hazardous waste in containers is regulated by The United States Environmental Protection Agency (EPA). Containers are portable devices used for the storage, transportation, treatment, disposal or handling of materials (see, for example, 40 CFR §260.10). The regulation, 40 CFR §265.173(a), states in general: A container holding hazardous waste must always be closed during storage, except when it is necessary to add or remove waste. In addition, SUBPART CC, 40 CFR 264.1086 (c) (1) (ii) requires hazardous waste containers to be sealed to prevent VOC emissions.[0004]The purpose of the closed container requirement is to, for example:[0005]Minimize emi...

Claims

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Application Information

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IPC IPC(8): B65D45/34B65D43/16B65D51/16
CPCB65D43/165B65D51/1605B65D45/32
InventorSTARR, ROBERT J.EVANS, JR., R. DOUGLASPOWELL, BETH P.
OwnerNEW PIG CORP