Apparatus and method for suction and discharge of material
AssigneeDisab Vacuum Technology AB
InventorsKarl T. Haugen, Gert Lovgren, Jan Billberg, Gisle Hauk
Life of this patent
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Abstract
An apparatus for suction and discharge of material comprises a container (9) with a suction opening (19) for letting in a sucked-up air/material mixture and a discharge opening (14) for discharging material. The container (9) is rotatable and has inner conveying means (18) which upon rotation of the container (9) are adapted to convey the material to the discharge opening (14).
Claims23
An apparatus for suction and discharge of material, comprising a container (9) with a suction opening (19) for letting in a sucked-up air/material mixture and a discharge opening (14) for discharging of material, characterised in that the container (9) is rotatable and has inner conveying means (18) which upon rotation of the container (9) are adapted to convey the material to the discharge opening (14).
The apparatus as claimed in any one of the preceding claims, in which the container (9) has an exhaust opening (20) for letting out air.
The apparatus as claimed in any one of the preceding claims, in which the exhaust opening (20) via a second connecting means (lob) is connected to an exhaust duct (11) communicating with an extractor (4) for air.
The apparatus as claimed in any one of the preceding claims, in which the discharge opening (14) is sealable.
The apparatus as claimed in any one of the preceding claims, in which the suction and exhaust openings (19, 20) are sealable.
The apparatus as claimed in any one of the preceding claims, in which a conveyor belt (17) is arranged in the vicinity of the discharge opening (14) outside the container (9) for conveying material discharged from the container (9).
The apparatus as claimed in any one of the preceding claims, in which a longitudinal axis of the container (9) is inclined relative to a horizontal plane, the discharge opening (14) being arranged at the upper end of the container (9).
A method for suction and discharge of material, characterised by the steps of
- connecting via a first connecting means a suction duct to a suction opening in a rotatable container,
- connecting via a second connecting means an exhaust duct to an exhaust opening in the container, the exhaust duct communicating with an extractor for air,
- drawing in material and air from the suction duct by suction through the suction opening into the container,
- drawing in air from the container by suction through the exhaust opening to the exhaust duct, material and air being separated,
- detecting a filling level in the container,
- disconnecting, when said level exceeds a predetermined threshold value, via said first and second connecting means the suction and exhaust ducts from the container, and opening a discharge opening in the container, and
- conveying, by rotation of the container, the material out of the discharge opening with the aid of at least partly helical conveying means arranged in the container.
Dependencies are inferred from the claim text.