Printing press circulation system
AssigneeBaldwin GraphicsSystems, Inc.
InventorsCharles R. Gasparrini, Christopher Hickey
Life of this patent
Estimating the term…
Abstract
A printing press liquid circulation system including a cooling pan having a dedicated power return drain having a power drain orifice and optional cooling capacity located on and as part of the pan. The system induces or suctions flow of liquid from the pan, having a pan supply orifice, to a reservoir through a return conduit by connecting the return conduit to a power return drain. Proper design of the power drain orifice and the pan supply orifice allows for a matched pan supply and return system for an open hydraulic circuit, free of foam and flooding with no adjustments required.
Claims11
A circulation system for a printing press having a cylinder, said circulation system comprising:
- a pan for supplying liquid to the cylinder of the printing press, said pan including a liquid supply orifice and an outlet;
- a standpipe configured to drain liquid from the pan while maintaining a substantially constant liquid level in the pan, wherein said standpipe communicates with the outlet of said pan;
- a circulator reservoir holding the liquid;
- a power drain dedicated to and located in proximity to said pan, said power drain including a first inlet having a power drain orifice, a second inlet and an outlet;
- a drain conduit extending from said standpipe to the second inlet of said power drain for draining liquid from said pan;
- a return conduit extending from the outlet of the power drain to said circulator reservoir;
- and
- a pump configured to pump liquid from said circulator reservoir through a supply conduit to the pan liquid supply orifice and the first inlet of said power drain to draw liquid from the pan and to induce suction in said return conduit.
A circulation system for a printing press having a cylinder, said circulation system comprising:
- a pan for supplying liquid to the cylinder of the printing press, said pan including a liquid supply orifice and an outlet;
- a standpipe configured to drain liquid from the pan while maintaining a substantially constant liquid level in the pan, wherein said standpipe communicates with the outlet of said pan;
- a reservoir for holding the liquid;
- a power drain dedicated to and located in proximity to said pan, said power drain including an inlet having a power drain orifice, a second inlet and an outlet;
- a cooling mechanism for cooling the liquid in said pan, said cooling mechanism located in proximity to said pan;
- a drain conduit extending from the cooling mechanism to the power drain orifice of said power drain for draining liquid from the standpipe;
- a return conduit extending from the outlet of said power drain to the reservoir;
- and
- a pump configured to pump liquid from the reservoir through a supply conduit to the liquid supply orifice and the cooling mechanism to induce a suction pressure in said return conduit to draw liquid from said pan and to the return conduit.
A circulation system for a printing press having a cylinder, said circulation system comprising:
- a pan for supplying liquid to a printing press, said pan including an inlet and an outlet;
- a standpipe configured to drain liquid from the pan while maintaining a substantially constant liquid level in the pan, said standpipe communicating with the outlet of the pan;
- a reservoir for holding the liquid;
- a cooling mechanism corresponding to and located in said pan, said cooling mechanism including an inlet having a cooling mechanism inlet orifice, at least one pan flow orifice to supply the pan with liquid, and an outlet;
- a power drain dedicated to and located in proximity to said pan, said power drain including a first inlet having a power drain orifice for receiving liquid from the outlet of said cooling mechanism, a second inlet for receiving liquid from the standpipe, and an outlet;
- a return conduit extending from the outlet of said power drain to the reservoir;
- and
- a pump configured to pump liquid from the reservoir through a supply conduit to the cooling mechanism inlet orifice to induce a suction pressure in said return conduit to draw liquid from the pan to the return conduit.
Dependencies are inferred from the claim text.