Economical waste removal system for fat, oil, and grease
AssigneeThermaco, Inc.
InventorsWilliam C. Batten, Bruce W. Kyles
Life of this patent
Estimating the term…
Abstract
An economical fat, oil and grease removal assembly and method includes a container having a bottom, a top, at least one sidewall, an inlet and an outlet. The outlet is spaced above the bottom and below the top to define a static water level for liquid in the container. The container may include at least one divider. The container further includes a valve at an elevation such that F.O.G. floating on water in the container can flow from the container out through the valve when a valve control is engaged and opened. The assembly further includes an inlet baffle, an outlet baffle and a removable storage tank arranged to accept F.O.G. that is flowed out of the container.
Claims30
An economical fat, oil, and grease (F.O.G.) removal assembly for use in kitchens, comprising:
- a container having a bottom, a top, at least one sidewall, an inlet to receive an influent flow of F.O.G. and water from a drain, and an outlet for discharging grey water from the container, wherein the inlet and outlet are spaced above the bottom and below the top,
- a valve in the container at an elevation such that F.O.G. floating on water in the container can flow from the container out through the valve when an effluent level in the container is raised above the valve level and the valve is opened,
- a valve control for alternating the valve between an open and closed position,
- a removable storage tank mating with the container and arranged to accept F.O.G. that flows out of the container through the valve when the liquid level in the container is raised above the valve and the valve is opened, and
- a portal on the storage tank interfacing with the valve.
A method of removing fat, oil, and grease (F.O.G.) from effluent comprising:
- connecting a kitchen drain to an inlet of a container,
- connecting a sewage drain to an outlet in the container, the outlet being located on the container to define a static water level for liquid in the container,
- placing a removable storage tank next to the container,
- interfacing a portal on a storage tank with a valve on the container,
- discharging effluent water containing F.O.G. from the kitchen drain into the inlet,
- holding the effluent water containing F 0 G inside the container for a period to allow F.O.G. to float to the top of the contained effluent water,
- permitting grey water to flow from the container outlet to the sewage drain,
- intermittently discharging floating F.O.G. through the valve in the container and into the storage tank,
- separating the interface between the valve and the portal by replaceably removing the storage tank,
- emptying the F.O.G. stored in the storage tank,
- replacing the storage tank next to the container, and
- reestablishing the interface between the valve and the portal.
A method of making a grease trap comprising:
- molding a container having a bottom, a top, and at least one sidewall;
- molding an upwardly shaped divider having an opening at an apex;
- installing an inlet baffle and an outlet baffle in the container;
- inserting the upwardly shaped divider inside the container to define an upper chamber above the divider and a lower chamber below the divider;
- molding a removable tank with a portal for receiving F.O.G. from the container;
- fitting the tank to be mated with the container;
- installing a valve for controlling the flow of F.O.G. from the container into the tank.
Dependencies are inferred from the claim text.