Plastic article or earthenware shaping or treating: apparatus – Tumbling type agglomerating means for particulate material
Patent
1976-06-21
1977-09-06
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Tumbling type agglomerating means for particulate material
23313R, 259 3, 259 33, 259 85, 425333, B01J 212, B29B 102
Patent
active
040464962
ABSTRACT:
A rotary drum assembly includes separate agglomerating and hardening drums that are rotated independently of each other. The agglomerating drum has a generally cylindrical configuration with an inner cylindrical wall. A scraper is rotatably positioned within the agglomerating drum in spaced relation to the inner cylindrical wall with its axis spaced from the axis of the drum. The scraper has a tubular body portion with a plurality of parallel rows of blades extending radially therefrom. Each of the rows extends lengthwise along substantially the entire length of the scaper body portion and follow a helical path having a single turn about the axis of the tubular body portion. The rows of blades thus make a single convolution about the scraper body portion. Drive means are provided to synchronously rotate the agglomerating drum and scraper with the scraper arranged to rotate at a preselected and different speed relative to the speed of the drum. Agglomerative material is introduced into the rotating agglomerating drum and forms a layer of agglomerative material on the drum inner cylindrical wall. The scraper is rotated in the same direction as the direction of rotation of the agglomerating drum and at a preselected synchronous speed with the agglomerating drum. The rows of parallel blades on the scraper form a plurality of spaced elongated generally longitudinal ridges and valleys in the layer of agglomerative material on the drum cylindrical wall. The ridges have a slight arcuate configuration and form less than a single convolution throughout the entire length of the agglomerating drum. The spaced elongated ridges in the layer of agglomerative material extend lengthwise in the drum substantially parallel to the axis of the drum and serve as longitudinally extending lifters to mix and agitate other particulate agglomerative materials introduced into the drum by lifting portions of the other particulate agglomerative material from the underside of the bed and depositing the material on the upper surface of the bed. This type of mixing promotes the formation of agglomerates having a preselected relatively narrow size range. The synchronous rotation of the scraper removes agglomerative material deposited on the surface of the elongated ridges and valleys formed in the layer of agglomerative material so that the desired ridge and valley configuration is maintained in the layer of agglomerative material.
REFERENCES:
patent: 1980130 (1934-11-01), Fasting
patent: 2778056 (1957-01-01), Wynne
patent: 2831210 (1958-04-01), De Vaney
patent: 3316585 (1967-05-01), Kallberg
patent: 3345683 (1967-10-01), Eirich et al.
Gorin Everett
Jasulaitis William A.
Theodore Frank William
Wasson George E.
Consolidation Coal Company
Fowler, Jr. D. Leigh
Mikesell, Jr. William A.
Price, Jr,. Stanley J.
Spicer, Jr. Robert L.
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