Material or article handling – Static receptacle and means for charging or discharging – or... – Charging or charge-distributing means
Patent
1986-03-13
1989-03-28
Aschenbrenner, Peter A.
Material or article handling
Static receptacle and means for charging or discharging, or...
Charging or charge-distributing means
414311, 414317, B65G 6538
Patent
active
048159255
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a circular storage container for granular materials (hereafter sometimes "fill") having a central support column. A top-loading filling device is rotatable about the central axis and vertically movable along the column. A lateral conveyor is rotatable about the column and connected to the filling device via a telescopic, vertically extendable feed pipe. The support column, constructed of ring plates, has a central discharge shaft and guide rails affixed to its exterior for a hoisting and rotating apparatus, and the ring plates have a downward-slanting, wedge-shaped outer edge section.
In known large-scale silos of this type as disclosed in the Dutch patent application No. 8103486 a filling device and a crane bridge together with the lateral conveyor revolve around the central axis of the silo. The granular material drops through a feed pipe, which extends to a level just above the top of the fill in the silo, and is moved radially outward by the horizontal lateral conveyor. The lateral conveyor remains in a horizontal position as it is raised with the rising level of fill in the silo.
For removing the fill from the silo both screws of the lateral conveyor are counterrotated to draw the fill radially inward to where it drops past the ring plates through a central discharge shaft for further removal by a third screw conveyor. The ring plates are vertically spaced, arranged to define the central column and each has a horizontal surface of sufficient width so that the granular material thereon comes to rest in the form of the alluvial cone for the material in question. Thus, the material drops into the discharge shaft only when forced radially inward by the double screw conveyor.
The ring plates are reinforced by a downward-slanting outer edge. This can cause clogging when the lateral conveyor forces the granular material against the slanted edge during the removal process. Consequently, support columns constructed of ring plates, though proven to be highly advantageous as compared with other constructions serving the same purpose, are suited only for granular materials of the kind which do not tend to agglomerate.
SUMMARY OF THE INVENTION
Therefore, it is an object of the present invention to construct a silo with a support column constructed of ring plates adapted to be used with granular materials which has a tendency to agglomerate.
In accordance with the present invention this objective is achieved by providing a ring plate which, in cross-section, defines an angular outer edge section the apex of which projects radially outward.
The angular edge section facing the granular material advantageously diverts the material during the removal process into the spaces between the ring plates. This prevents material accumulations in front of the angular or wedge-shaped edges which could otherwise result in clogging.
For an efficient diversion of the material into the spaces above and below the ring plates the apex of the angle is disposed approximately at the mid-point of the outer edge section.
The ring plates have annular surfaces which may be concave or convex to take account of the alluvial cone. A concave surface results in a decreased angle of slope of the granular material, while a convex surface yields a correspondingly greater slope angle. In addition, a helically coiled band may be positioned inside the support column to eliminate the need for numerous ring plates and render the column torsionally more rigid and more resistant to buckling.
To dislodge material, such as ash, which may agglomerate, at the spaces between the ring plates, it is helpful to place a ring- or coil-shaped blow duct under the upper annular surface of the ring plates or the coil-shaped band. The duct has air discharge openings directed at the annular surface directly beneath where the granular material comes to rest.
The ring plates or coil-shaped band may be readily reinforced by attaching to them interiorally positioned, radially oriented, vertical stiffening plates. The st
REFERENCES:
patent: 2500043 (1950-03-01), Radtke
patent: 2907501 (1959-10-01), Laird
patent: 3232457 (1966-02-01), Bernstein et al.
patent: 3358856 (1967-12-01), Weibull
patent: 3513995 (1970-05-01), Stroker
patent: 3554392 (1971-01-01), Ivestedt
patent: 3713552 (1973-01-01), Schnyder
patent: 3802583 (1974-04-01), Tinsley et al.
patent: 4138021 (1979-02-01), McKenzie
patent: 4487542 (1984-12-01), Johanning et al.
patent: 4564317 (1986-01-01), Farber
patent: 4645403 (1987-02-01), DeWit
Newsletter, Surrey Iron Works Ltd. 82-1.
Holland Quarterly 82/4, p. 10.
AJO Anlagentechnik GmbH & Co. KG
Aschenbrenner Peter A.
Rendos Thomas A.
LandOfFree
Circular storage container for granular materials with a vertica does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circular storage container for granular materials with a vertica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circular storage container for granular materials with a vertica will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1655632