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An unloading system for transferring dry, bulk, particulate material from a ship, barge or the like to a conveyor system and ultimately to a storage silo. The particulate material is continuously transferred from the ship into a first pressure vessel or container which pressure vessel is operated un

An unloading system for transferring dry, bulk, particulate material from a ship, barge or the like to a conveyor system and ultimately to a storage silo. The particulate material is continuously transferred from the ship into a first pressure vessel or container which pressure vessel is operated under a constant vacuum or negative pressure. During the filling of the pressure vessel, particulate material is removed from the pressure vessel and sequentially transferred first to a temporary discharge container and then to a conveyor system. The alternating filling and emptying of discharge container continues while the pressure vessel is continuously filled.

대표청구항 ▼

In a method for unloading dry, bulk, particulate material from a ship, barge or the like by suction and transferring the material to a conveyor means comprising the steps of: continuously transferring said material by suction from the barge, ship or the like into a pressure vessel, the pressure vess

In a method for unloading dry, bulk, particulate material from a ship, barge or the like by suction and transferring the material to a conveyor means comprising the steps of: continuously transferring said material by suction from the barge, ship or the like into a pressure vessel, the pressure vessel being under constant vacuum; emptying a part of the contents of said pressure vessel into a discharge container while continuing to transfer additional material from the ship into said pressure vessel; and emptying the contents of said discharge container onto said conveyor means while continuing to transfer additional material from the ship into said pressure vessel; said step of emptying a part of the contents of said pressure vessel and the step of emptying the contents of said discharge container being repeated in alternating sequence, the improvement comprising the steps of: introducing outside ambient air into said pressure vessel through a first valve means which is connected to aerating pads mounted within said pressure vessel while continuing to transfer material into said pressure vessel; transferring internal air only through a pressure equalizing means connected between said pressure vessel and said discharge container for equalizing the pressure between said pressure vessel and said discharge container prior to said step of emptying a pair of the contents of said pressure vessel into said discharge container; and introducing outside ambient air into said discharge container through a second valve means which is connected to aerating pads mounted within said discharge container during the filling of said discharge container and prior to the emptying of the contents of said discharge container onto said conveyor means.