Cut extrudate dispersal hood
A product-spreading hood assembly ( 10 ) for use with a die unit ( 128 ) includes a deflector ( 14 ) having wall structure defining a product inlet opening ( 90 ) and a product outlet opening ( 92 ); the deflector ( 14 ) is preferably generally frustoconical in shape and is supported by a housing ( 12 ). An optional air delivery assembly ( 16 ) allows air currents to be directed from the area of the inlet ( 90 ) towards outlet ( 92 ) to facilitate separation of discrete products. Advantageously, the air currents are delivered in a circumferential fashion about the die unit ( 128 ). Use of the hood assembly ( 10 ) serves to separate high moisture or “sticky” extrudates, thereby preventing agglomeration thereof.
1. A combination comprising:
a material processing device having an outlet die unit presenting a generally horizontal axis, the device operable to generate discrete products; and
a product-spreading hood assembly adjacent said outlet die unit in order to maintain separation of said discrete products issuing from said outlet die unit, said hood assembly comprising
a deflector having a wall structure defining a product inlet opening with a first cross-sectional area, and a product outlet opening with a second cross-sectional area greater than said first cross-sectional area, said product outlet opening presenting an outer margin, said wall structure including a generally frustoconical wall section presenting a central longitudinal axis, said frustoconical wall section located and diverging outwardly from said central longitudinal axis between said product inlet and said product outlet;
a structure mounting said deflector in a generally horizontal orientation with said deflector central longitudinal axis extending substantially horizontally; and
product delivery structure a located proximal to said product outlet opening and oriented to receive products therefrom, said product delivery structure having sidewalls presenting a product delivery opening located outboard of said product outlet opening's outer margin so that the products received from said product outlet opening gravitate through said product delivery opening in a direction transverse to said central longitudinal axis,
said product inlet opening located at least in part about said die unit so that said discrete products are directed into said deflector; and said deflector wall structure comprising a plurality of wall segments which are movable from a closed position cooperatively defining the reflector, and an open position wherein said wall segments are separated.
2. The combination of claim 1 , said deflector wall structure comprising a pair of half-frustoconical segments.
3. The combination of claim 1 , said outlet die unit comprising an extruder die and a knife device, and said discrete products being cut extrudates.
4. The combination of claim 1 , said processing device being an extruder.
5. The combination of claim 1 , including an air delivery assembly operable to direct air currents from a point proximal to said inlet opening into said first cross-sectional area in a direction towards said outlet opening.
6. The combination of claim 5 , said air delivery assembly comprising a plenum extending at least partially about said wall structure defining said product inlet opening.
7. The combination of claim 1 , including an airway substantially circumscribing said wall structure proximal to said product inlet.