초록 ▼

A self-cleaning return pump system for use with a clean-in-place system for cleaning vessels includes a recirculation loop for providing flow communication including a return pump, an eductor, and a separator. The return pump is arranged to discharge a liquid through the eductor into the separator a

A self-cleaning return pump system for use with a clean-in-place system for cleaning vessels includes a recirculation loop for providing flow communication including a return pump, an eductor, and a separator. The return pump is arranged to discharge a liquid through the eductor into the separator and is supplied with a substantially continuous flow of liquid from the separator. A return line provides flow communication between the vessel to be cleaned and a suction port of the eductor. The separator has a top discharge port and a bottom discharge port. The top discharge port is configured to discharge a liquid or a liquid-air mixture therefrom to the clean-in-place system. The return pump causes liquid flowing through the recirculation loop at the eductor to have sufficient dynamic head to draw liquid or a mixture of liquid and air from the vessel through the return line, into the eductor. The liquid or liquid air mixture is discharged into the separator. The bottom discharge port of the separator provides the substantially continuous flow of liquid to the return pump and substantially all of the air and a portion of the liquid is discharged from the separator top discharge port at a flow rate sufficiently high to maintain a flow of liquid across the bottom of the vessel to maintain the liquid therein in a state of substantially continuous flow. The liquid is discharged from the separator top discharge port at a rate of flow about equal to the rate of flow of liquid supplied to the vessel through the supply line.

대표청구항 ▼

A self-cleaning return pump system for use with a clean-in-place system for cleaning vessels, the vessel having a bottom wall, a supply line and a return line and being supplied with a liquid through the supply line, the system comprising: a recirculation loop for providing flow communication includ

A self-cleaning return pump system for use with a clean-in-place system for cleaning vessels, the vessel having a bottom wall, a supply line and a return line and being supplied with a liquid through the supply line, the system comprising: a recirculation loop for providing flow communication including a return pump, an eductor, and a separator, the return pump being arranged to discharge a liquid through the eductor into the separator and being supplied with a substantially continuous flow of liquid from the separator, the return line providing flow communication between the vessel to be cleaned and the eductor, the separator having an upper discharge port and a lower discharge port, the upper discharge port being positioned above the lower discharge port and being configured to discharge one of a liquid and a liquid-air mixture therefrom, wherein the return pump causes liquid flowing through the recirculation loop at the eductor to have sufficient dynamic head to draw one of the liquid and a mixture of the liquid and air from the vessel through the return line, into the eductor and into the separator, wherein the lower discharge port of the separator provides the substantially continuous flow of liquid to the return pump and wherein substantially all of the air and a portion of the liquid is discharged from the separator upper discharge port at a flow rate sufficiently high to maintain a flow of liquid across the bottom wall of the vessel to maintain the liquid therein in a state of substantially continuous flow, and wherein the liquid is discharged from the separator upper discharge port at a rate of flow about equal to the rate of flow of liquid supplied to the vessel through the supply line.