Patent ID: 11925959
Assignee: HELIOS GERäTEBAU FüR KUNSTSTOFFTECHNIK GMBH
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A device (1) for batchwise dedusting a granulate (4), having a conveying flow generator arranged upstream of a dedusting container (9) in the form of an ejector compressed air nozzle (21a) with a compressed air connection and the dedusting container (9) comprising:
at least one granulate inlet opening (8) for the granulate (4),
a granulate outlet opening (25) in a lower part of the dedusting container (9) in its base,
an air outlet opening (18) which is arranged in an upper part of the dedusting container (9),
an ionizer (37),
a whirling unit for whirling up the granulate (4) in the dedusting container (9),
a controller (22) capable of controlling the whirling unit and the ionizer,, wherein
an intermediate container (14) is arranged below the granulate outlet opening (25) at an underside of the dedusting container (9), into which dedusted granulate can fall through the granulate outlet opening,
the device comprises a level sensor in the intermediate container which is connected to the controller (22),
the granulate outlet opening (25) is permanently open, wherein the device has no closure element as part of the device that is capable of closing the granulate outlet opening,
peripheral walls surrounding the dedusting container (9) consist of an electrically non-conductive material at least on inner surfaces facing the interior,
the whirling unit has upwardly directed whirling nozzles (31), which are connected to a compressed air connection, in the lower part of the dedusting container (9), in the granulate outlet opening (25),
wherein, if a level in the intermediate container (14) measured by the level sensor rises up to a level of the granulate outlet opening (25) of the dedusting container (9), the controller (22) initiates the batchwise dedusting,
wherein the lower granulate outlet opening (25) is not closed by a closure element of the device during a filling process of the dedusting container with the granulate (4).