EP0125516A1
Expired / Lapsed
EP
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Granulating apparatus
Assignee: Okawara Mfg Co Ltd
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Filing: 1984-04-16
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Granted: —
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Expires: 2004-04-16
Abstract
Abstract A granulating apparatus for continuously producing granules from powdery particles. The granulation chamber (8) of the apparatus comprises a feeder (11) for supplying powdery particles to te granulation chamber (8) and a spray nozzle (28) for ejecting a binder solution on the powdery particles held in the granulation chamber (8). Powdery particles-drying hot gas is supplied from the bottom of the granulation chamber (8) so as to vortically flow upward through the granulation chamber. The centrifugal force of the vortically flowing hot gas causes fully grown granules having a larger diameter to be distributed toward the peripheral wall (9) of the granulation chamber (8). The granules fully grown to a prescribed size are selectively and continuously conveyed to a drying chamber through an outlet port formed in the peripheral wall (9) of the granulation chamber (8). The granules thus brought are thoroughly dried in the drying chamber (48). In this way, powdery particles fully grown to granules having a prescribed size in an granulation chamber (8) can be selectively and continuously discharged.
Inventors
- 👤 Atsushi Kubota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 01:04
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F26B3/092; F26B3/0926; B; B01; B01J; B01J2/00; B01J2/16; B01J8/00; B01J8/18; B01J8/24; B01J8/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
A granulating apparatus for continuously producing fully grown granules from powdery particles which comprises: a body (10) having a peripheral wall (9) defining a granulation chamber (8); means (11) for supplying raw, powdery particles to the granulation chamber (8); binder solution-feeding means (28) which is set in the upper region of the granulation chamber (8) to spray the binder solution on the raw, powdery particles held in the granulation chamber (8); and gas-feeding means (18) for taking a gas into the granulation chamber (8) to dry the fully grown granules stored in said granulation chamber (8); and which is characterized in that said gas-feeding means (18, 20) is provided with distribution means (22-27) for causing the hot gas to vortically flow upward through the granulation chamber (8), thereby imparting a centrifugal force to the resultant vortically flowing raw, powdery particles; fully grown granules having a larger diameter are drawn near the peripheral wall (9) of the granulation chamber; said peripheral wall (9) is provided with means (38-42) for continously taking out the fully grown granules approaching said peripheral wall (9); fully grown granules stored in the granulation chamber (8) are continuously taken out; and the discharged fully grown granules are brough into a dryer (6) for drying.
Claim 2
Dependent Claim
207 words
A granulating apparatus for continuously producing fully grown granules from powdery particles which comprises: a body (10) having a peripheral wall (9) defining a granulation chamber (8); means (11) for supplying raw, powdery particles to the granulation chamber (8); binder solution-feeding means (28) which is set in the upper region of the granulation chamber (8) to spray the binder solution on the raw, powdery particles held in the granulation chamber (8); and gas-feeding means (18) for taking a gas into the granulation chamber (8) to dry the fully grown granules stored in said granulation chamber (8); and which is characterized in that said gas-feeding means (18, 20) is provided with distribution means (22-27) for causing the hot gas to vortically flow upward through the granulation chamber (8), thereby imparting a centrifugal force to the resultant vortically flowing raw, powdery particles; fully grown granules having a larger diameter are drawn near the peripheral wall (9) of the granulation chamber; said peripheral wall (9) is provided with means (38-42) for continously taking out the fully grown granules approaching said peripheral wall (9); fully grown granules stored in the granulation chamber (8) are continuously taken out; and the discharged fully grown granules are brough into a dryer (6) for drying.
Claim 3
Dependent Claim
60 words
, 2. The granulating apparatus according to claim 1, characterized in that the gas-feeding means (18,20) is provided with a distribution plate (22,27) which controls the streaming direction of the gas so as to cause it to vortically flow upward through the granulation chamber (8) and the gas is brought into the granulation chamber (8) through said distribution plate (22,27).
Claim 4
Dependent Claim
47 words
The granulating apparatus according to claim 1 or 2, characterized in that the peripheral wall (9) defining the granulation chamber (8) is shaped in an inverted frustum form, thereby subjecting the gas occupying the upper region of the granulation chamber (8) to a smaller upward lifting force.
Claim 5
Dependent Claim
52 words
The granulating apparatus according to any of claims 1 to 3, characterized in that the body (10) has a dust-mist collecting chamber (34) provided in the upper region of the granulation chamber (8), and the gas supplied to the granulation chamber (8) is drawn out (32) through said dust-mist collecting chamber (34).
Claim 6
Dependent Claim
21 words
The granulating apparatus according to claim 4, characterized in that the dust-mist collecting chamber (34) comprises a replaceable bag filter (36).
Claim 7
Dependent Claim
54 words
The granulating apparatus according to any of claims 1 to 5, characterized in that the granule-discharging means (38-42) comprises an outlet port (38) formed in the peripheral wall (9) of the granulation chamber (8), and the fully grown granules are thrown into said outlet port (38) by the centrifugal force of the hot gas.
Claim 8
Dependent Claim
78 words
The granulating apparatus according to any of claims 1 to 6, characterized in that said granule-discharging means (38-42) is provided with an outlet duct (40) which communicates with the dryer (6), and is connected to the outlet port (38) at one end and also to the dryer (6) at the other end, and a spiral (42) is provided in the outlet duct (40) to convey the full grown granules from the outlet port (38) to the dryer (6).
Claim 9
Dependent Claim
33 words
The granulating apparatus according to any of claims 1 to 7, characterized in that the binder solution-feeding means (28) comprises a spray nozzle for spraying the binder solution on the raw powdery particles.
Claim 10
Dependent Claim
65 words
The granulating apparatus according to any of claims 1 to 8, characterized in that the dryer (6) comprises second gasfeeding means (50,52) for causing a hot gas to slantwise flow upward through the drying chamber (48), thereby drying the fully grown granules brought into said drying chamber (48) in a fluidized state, and carrying the granules to the outlet (62,64) from the inlet (46) thereof.
Claim 11
Dependent Claim
44 words
The granulating apparatus according to any of claims 1 to 9,characterized. in that said second gas- feeding (50,52) means is provided with a distribution plate (54) which controls the streaming direction of the hot gas so as to cause it to slantwise flow upward.
References Cited (Backward Citations)
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