Back to results
US 4,687,408 AGranted
Lock for the transport of bulk material
AssigneeVoest-Alpine Aktiengesellschaft
InventorManfred Klambauer
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeVoest-Alpine Aktiengesellschaft
InventorManfred Klambauer
Estimating the term…
In a lock for the transport of bulk material between chambers being under different pressure a lock chamber (4) is guided tightly and driven by a reciprocal movement in a preferably horizontal guide tube (2), which comprises on different sides of its wall a first opening (12) leading to the chamber with lower pressure and in an axial distance therefrom a second opening (15) leading to the chamber with higher pressure, wherein the chamber comprises openings (13, 14), which can be brought in coincidence with the first (12) and second (15) opening at the points or reversal of the reciprocal movement. Adjacent to the lock chamber (4) in axial direction is arranged a slide (3a) being tightly guided in the guide tube (2), which slide slides over the second opening (15). At the end (18) of the guide tube (2) being opposite of the first opening (12) a piston (20) is guided tightly in the guide tube (2) and is driven to moving in opposite direction to the lock chamber (4) and the transverse wall (6) delimiting the lock chamber (4) at the side adjacent to the piston (20) seals the lock chamber tube (3) in a leaky manner. Because of the displacement effect of the piston (20) the lock chamber (4) is brought to higher pressure for discharging a bulk material out of the lock and to atmospheric pressure for charging of bulk material into it.
Lock for the transport of bulk material between chambers being under different pressure comprising a guide tube having on different sides of its wall a first opening leading to the chamber with lower pressure and in an axial distance therefrom a second opening leading to the chamber with higher pressure, a lock chamber (4) that is guided tightly and driven by a reciprocal movement in the guide tube (2), which lock chamber comprises openings (13, 14), which can be brought in coincidence with the first and the second opening (12, 15) of the guide tube at the reversal of the reciprocal movement, slide slidably arranged in the guide tube for sliding, over the openings (12-15) of the guide tube (2), and at the end of the guide tube opposite of the first opening (12) a piston (20) which is guided tightly in the guide tube (2) and which is driven to move in opposite direction to the direction the lock chamber (4) so as to selectively increase or decrease the pressure in the lock chamber.
Dependencies are inferred from the claim text.