Press for rendering fatty bones
AssigneePB Gelatines
InventorGyula Hanak
Life of this patent
Estimating the term…
Abstract
A multistage continuous rotary screw press assembly with the helical or spiral collars, vanes or ribs of each stage within the casing separated from those of an adjacent stage in the direction of material feed through the casing by a transition zone in which fixed material impingement elements, for example, knives, are mounted for dividing the material as it is expressed from one stage to the next adjacent stage in the material feeding direction.
Claims12
In a multistage continuous rotary press assembly, including a cylindrically shaped casing and including a rotary drive arbor passing therethrough and supported at the ends thereof and carrying a continuous screw collar in each stage with the outer diameter of the screw collar in each stage being slightly less than the inside diameter of the casing, and with the inner diameter of the screw collar in each stage increasing in the direction of feeding circulation of the product material being treated, said press assembly further comprising:
- said screw collar having a shape to define transition zones between adjacent pair of stages in the area between the end of the screw collar in an upstream stage portion and the beginning of the screw collar in the next succeeding downstream stage portion;
- material impingement means disposed within each transition zone, said material impingement means having upstream edges oriented for dividing material entering the transition zone from the adjacent upstream stage as it passes through the transition zone to the next adjacent downstream stage, said impingement means comprising first impingement portions located in the transition zones at the upstream stage portions and having said upstream edges, and second impingement portions located spaced from the upstream stage portion in the transition zones at the downstream stage portions and having said upstream edges.
A multiple stage continuous rotary press assembly comprising:
- a cylindrically shaped casing;
- a rotary drive arbor supported at the ends thereof and extending through said casing for rotational movement therein;
- a continuous screw collar supported on said rotary drive arbor, said screw collar having a shape for defining a plurality of stages within said casing and having an increasing inner diameter within each of said plurality of stages in the direction of flow of material, said screw collar additionally defining transition zones having upstream and downstream stage portions located between adjacent ones of said plurality of stages;
- and
- material impingement means disposed within each of said transition zones and having upstream facing edges positioned for dividing material entering each of said transition zones from an adjacent upstream stage as said material passes from the upstream stage to a next adjacent downstream stage, said impingement means further comprising first impingement portions located in each transition zone at the upstream stage portions and having said upstream facing edges, and second impingement portions located spaced from the upstream stage portion in the transition zones at the downstream stage portions and having said upstream facing edges.
In a multiple stage continuous rotary press assembly of the type including a cylindrically shaped casing, a rotary drive arbor supported at the ends thereof and extending through said casing for rotational movement therein, a continuous screw collar supported on said rotary drive arbor, said screw collar having a shape for defining a plurality of stages within said casing and having an increasing diameter within each of said plurality of stages in the direction of flow of material, an improvement comprising said screw collar shaped for defining transition zones located between adjacent ones of said plurality of stages, each of said transition zones presenting radially spaced first and second cylindrical surface portions inwardly spaced from the casing and rotating with the arbor, said first cylindrical surface portions having a diameter corresponding to the diameter of the screw collar at each upstream end of each stage, and said second cylindrical surface portions having a diameter corresponding to the diameter of the screw collar at each downstream end of each stage;
- and impingement means disposed within each of said transition zones and having upstream facing edges positioned for dividing material entering each of said transition zones from an adjacent upstream stage as said material passes from the upstream stage portion to a next adjacent downstream stage portion, said impingement means comprising at least a pair of fixed peripherally spaced L-shaped knives, each of said knives having a radially upwardly spaced branch and a radially outwardly spaced branch extending horizontally to overlap the larger diameter surface portion of each transition zone with a clearance therebetween, said radially upwardly spaced branch overlapping the smaller diameter surface portion of the transition zone with a clearance therebetween, and each upstream edge of each of said branches of said knives having bevelled edges for dividing material impinging thereon from adjacent upstream stages.
Dependencies are inferred from the claim text.