Resources Contact Us Home
Silo system for mixing stored material

Image Number 4 for United States Patent #4391528.

A silo for mixing dried and powdery materials such as cement. A number of discharge apertures positioned at different places at the bottom of a mixing silo are connected by conduits to a common receptacle such as an homogenizing silo. A flow control gate is coupled to each discharge aperture to allow material flow to the receptacle to be controlled. Three modes of operation are disclosed: a single flow-mode wherein the flow control gates are opened sequentially one at a time, a dual-flow-same-rate mode wherein pairs of flow control gates are sequentially opened to the same extent, and a dual-flow-different-rate mode wherein pairs of flow control gates are sequentially opened to different extents. A level sensor in the homogenizing silo is connected to a level indicator circuit which emits level indicator signals indicating whether the material in the receptacle is rising or falling, thereby allowing automatic adjustment of the material flow rate into the receptacle up to a predetermined cut-off level. A flow control gate selector circuit connected to a variable timer and to a mode control circuit selects which flow control gates will be opened, and an alternator for every pair of flow control gates is connected to the mode control circuit and to the flow control gate selector circuits to vary the flow rate during different alternator periods when the dual-flow-different-rate mode is selected.

  Recently Added Patents
Optical receiver and optical transfer apparatus
Print system
Process for recovering and recycling an acid catalyst
System and method for redundant array copy removal in a pointer-free language
Method and system for utilizing native ethernet as a virtual memory interconnect
Security arrangements for extended USB protocol stack of a USB host system
System and method for removing oxide from a sensor clip assembly
  Randomly Featured Patents
Universal crankshaft finishing machine
Process for fluid catalytic cracking of hydrocarbon feedstocks with high levels of basic nitrogen
Device for transferring structures which are provided in a mask onto a substrate
Control system and method for internal combustion engine
Envelope quality control apparatus
Noncarbonated beverage products with improved microbial stability and processes for preparing
Portable workout apparatus having a pivotally mounted exercise bar
Method for generating a genetically modified microbe
Liquid dispenser for mounting on showers
Automobile body