Sabetha, KS, United States
Sabetha, KS, United States

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Patent
Wenger Manufacturing Inc. | Date: 2015-08-10

An improved, high-capacity die assembly (10) for a food or feed extruder (12) is provided and is particularly useful for the production of high quality aquatic feeds. The die assembly (10) includes a mount (20), which is secured to the discharge end of an extruder barrel (14), with a plurality of tubular die components (22, 24) coupled with the mount (20). Each component (22,24) includes wall structure (38) defining an outwardly diverging tubular chamber (40) with a die plate assembly (50) coupled to the outer end of the wall structure (38). A flow diverter element (54) is located within each chamber (40) and has a large diameter end adjacent the assembly (50) and a smaller diameter end closer to the chamber inlet. The assembly (50) has a plurality of openings (52) outboard of the element (54).


Patent
Wenger Manufacturing Inc. | Date: 2014-06-23

An extruder (20) is specifically designed for the production of animal feed products (e.g., aquatic feeds) containing substantial quantities of low-cost fibrous materials, such as rice byproducts, at high production rates. The extruder (20) includes an elongated barrel (22) with a screw assembly (24) within the barrel and an endmost extrusion die assembly (34). The screw assembly (24) includes an inlet screw assembly (42) and a processing screw assembly (44). The assembly (44) includes screw components (50-56) of differential pitch to present a long pitch inlet section (64) and a tight pitch discharge section (68). Materials passing through the screw assembly (24) are successively subjected to high levels of steam injection (STE) followed by high levels of friction and shear (SME), so that the STE/SME ratio is at least about 6/1.


Patent
Wenger Manufacturing Inc. | Date: 2013-09-13

Apparatus (20) for injection of fluid into extrusion system components such as a preconditioner (24) or extruder (100) is provided, preferably as a composite assembly including a fluid injection valve (52) and an interconnected static mixer section (54). Alternately, use may be made of the fluid injection valve (52) or static mixer section (54) alone. The invention greatly simplifies the fluid injection apparatus used in extrusion systems, while giving more efficient absorption of thermal energy with a minimum of environmental contamination, and the ability to inject multiple streams into the extrusion systems.


Patent
Wenger Manufacturing Inc. | Date: 2014-06-09

Apparatus (20) for injection of fluid into extrusion system components such as a preconditioner (24) or extruder (100) is provided, preferably as a composite assembly including a fluid injection valve (52) and an interconnected static mixer section (54). Alternately, use may be made of the fluid injection valve (52) or static mixer section (54) alone. The invention greatly simplifies the fluid injection apparatus used in extrusion systems, while giving more efficient absorption of thermal energy with a minimum of environmental contamination, and the ability to inject multiple streams into the extrusion systems.


Patent
Wenger Manufacturing Inc. | Date: 2013-05-15

An improved, dual-shaft preconditioner (10, 70, 102) is provided having independent drive mechanisms (18, 20, 78, 80) operatively coupled with a corresponding preconditioner shaft (14, 16, 74, 76, 106, 108) and permitting selective rotation of the shafts (14, 16, 74, 76, 106, 108) at rotational speeds and directions independent of each other. Preferably, the speed differential between the shafts (14, 16, 74, 76, 106, 108) is at least about 5:1. The mechanisms (18, 20, 78, 80) are operatively coupled with a digital control device (60) to allow rotational speed and direction control. Preferably, the preconditioner (10, 70, 102) is supported on load cells (62, 100) also coupled with control device (60) to permit on-the-go changes in material retention time within the pre-conditioner (10, 70, 102). The pre-conditioner (10, 70, 102) is particularly useful for the preconditioning and partial gelatinization of starch-bearing feed or food materials, to an extent to achieve at least about 50% cook in the preconditioned feed or food materials.


Patent
Wenger Manufacturing Inc. | Date: 2015-02-09

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.


Patent
Wenger Manufacturing Inc. | Date: 2015-02-09

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.


Patent
Wenger Manufacturing Inc. | Date: 2015-10-05

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.


Patent
Wenger Manufacturing Inc. | Date: 2014-03-06

An improved dual-shaft preconditioner (10) of simplified design is provided giving increased moisturization and partial cooking of food or feed ingredients. The preconditioner (10) includes an elongated, tapered housing (12) presenting a pair of side-by-side, communicating housing sections (58, 60), with a corresponding pair of converging shafts (20, 22) within the sections (58, 60) and having a series of elongated, outwardly extending mixing elements (24, 26) secured to the shafts (20, 22). The preconditioner (10) is designed for use in a system including a downstream processing device, such as an extruder (146).


Patent
Wenger Manufacturing Inc. | Date: 2015-07-17

Food or feed processing systems (10, 96) include an extruder (14) and a downstream processor (16, 16a), and are operable to process high meat food or feed formulations. The processors (16, 16a) include an elongated processor barrel (38) presenting an inner surface (44) with a central body or tube (60) within the barrel (38) and presenting an outer surface (62). The surfaces (38, 62) thereby define an elongated annular processing region (70). The barrel (38) and tube (60) are steam heated by means of apparatus (52, 66). A rotatable processing element (72) is also located within the region (70). The element (72) has a plurality of helical vanes (88, 104), which scrape the surfaces (44, 62) to prevent buildup of material on these surfaces.

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