公开(公告)号：US4286058A

公开(公告)日：1981-08-25

申请号：US91798

申请日：1979-11-06

申请人： Lavon G. Wenger ,  Galen J. Rokey ,  Itamar Ben-Gera

发明人： Lavon G. Wenger ,  Galen J. Rokey ,  Itamar Ben-Gera

IPC分类号： A21B5/00 ,  A21C11/20 ,  A23P1/12 ,  C08B30/16 ,  C12P19/14

CPC分类号： C08B30/16

摘要： Methods and apparatus for high-moisture extrusion of starch-bearing grains is disclosed which yield cooked, gelatinized products suitable for short-time enzymatic conversion to sugars, and particularly those subject to fermentation to alcohol; the high production rates afforded through use of extrusion equipment, and the short conversion time of the resultant products, is particularly advantageous for economical alcohol manufacture, both for alcoholic beverages and for use as fuel. Preferably, whole or cracked starch-bearing grain is presoaked in an excess of water to a substantial moisture level, and the resultant slurry is fed to a specialized extruder. In the extruder the water is at least partially separated and carried from the process, and the grain is highly cooked and gelatinized for subsequent conversion. The overall apparatus preferably includes presoak tanks for the grain, a grain-conveying feeder, an extrusion cooker, and enzyme conversion tanks; the apparatus is advantageously sized for batch-continuous operations to produce a continuous flow of sugars. Conversion times for the gelatinized starches are low, less than about 45 minutes, and moisture and extrusion conditions can be altered to further lower sugar conversion time.

摘要翻译： 公开了含淀粉颗粒的高水分挤出的方法和装置，其产生适合于短时间酶转化成糖的熟化的糊化产物，特别是那些经发酵至醇的那些; 通过使用挤出设备提供的高生产率以及所得产品的短的转化时间对于酒精饮料和用作燃料的经济酒精制造是特别有利的。 优选地，将全部或裂纹的含淀粉颗粒预先在过量的水中预浸到相当的水分含量，并将所得浆料进料到专门的挤出机中。 在挤出机中，水至少部分地从该方法中分离并携带，并且将谷物高度熟化并凝胶化以用于随后的转化。 整体装置优选地包括用于颗粒的预浸槽，输送送料器，挤压炊具和酶转化罐; 该装置有利地用于分批连续操作，以产生连续的糖流。 糊化淀粉的转化时间低，少于约45分钟，并且可以改变水分和挤出条件以进一步降低糖转化时间。

公开(公告)号：US06609819B2

公开(公告)日：2003-08-26

申请号：US10068181

申请日：2002-02-05

申请人： Bobbie W. Hauck ,  Lavon G. Wenger

发明人： Bobbie W. Hauck ,  Lavon G. Wenger

IPC分类号： B29B748

CPC分类号： B29C47/402 ,  A23P30/20 ,  B29B7/801 ,  B29C47/0014 ,  B29C47/0801 ,  B29C47/38 ,  B29C47/60 ,  B29C47/6012 ,  B30B9/16 ,  B30B9/26

摘要： An improved twin screw extruder device (14) is provided which is capable of producing a wide variety of high quality extrudates having greatly varying final properties, without the need for extensive machine modifications. The extruder (14) includes a barrel (16) together with a co-rotating twin screw assembly (22). The assembly (22) is made up of a pair of screws (50, 52) having central, tapered shafts (54, 56) equipped with outwardly extending helical flighting (58, 60); the screws (50, 52) are non-parallel and are positioned so that the flighting (58, 60) thereof is intercalated along the length of the screws (50,52). The flighting is of specialized configuration and tapers along the length of the screws (50, 52) preferably at an angle of taper different than that of the shafts (54, 56); moreover, the width of the outer flighting surfaces (70, 72) increases along the length of the shafts (54, 56). This screw geometry defines a series of alternating upper and lower close-clearance high-pressure nip areas (78) defined by the flighting (58, 60) which serves to propel an extrudable mixture forwardly towards the outlet end (20) of the barrel (16). However, passageways (80) and kneading zones (82) are also defined between the screws (50, 52), which assures full mixing, shearing and cooking of the material. The extruder device (14) is capable of producing high density sinking aquatic feeds as well as expanded, low density products merely by changing the rotational speed of the screws (50, 52) together with appropriate temperature control. In another embodiment, a fluid extraction extruder (138) is provided having a specialized extruder head (140) including an outer shell (144) and an inner, elongated, slotted sleeve (152).

摘要翻译： 提供了一种改进的双螺杆挤出机装置（14），其能够生产具有极大变化的最终性能的各种各样的高质量挤出物，而不需要大量的机器修改。 挤出机（14）包括与同向旋转的双螺杆组件（22）一起的筒体（16）。 组件（22）由一对具有中心的锥形轴（54,56）的螺钉（50,52）组成，所述锥形轴配备有向外延伸的螺旋形飞行（58,60）; 螺钉（50,52）不平行并且被定位成使得其沿着螺钉（50,52）的长度插入其中（58,60）。 沿着螺钉（50,52）的长度优选地以与轴（54,56）的锥度不同的锥度的角度，排出专门的构造和锥度; 此外，外侧飞行表面（70,72）的宽度沿轴（54,56）的长度增加。 该螺钉几何形状限定了一系列交替的上部和下部闭合间隙高压压区（78），其由所述排放（58,60）限定，用于将可挤压混合物向前推向筒的出口端（20） 16）。 然而，通道（80）和捏合区域（82）也被限定在螺钉（50,52）之间，这确保了材料的完全混合，剪切和烹饪。 挤出机装置（14）能够通过在适当的温度控制下改变螺杆（50,52）的转速而产生高密度下沉水生饲料以及膨胀的低密度产品。 在另一个实施例中，提供流体提取挤出机（138），其具有包括外壳（144）和内部细长开槽套筒（152）的专用挤出机头（140）。

公开(公告)号：US5939124A

公开(公告)日：1999-08-17

申请号：US848817

申请日：1997-05-01

申请人： Lavon G. Wenger

发明人： Lavon G. Wenger

IPC分类号： A23K1/00 ,  A23K1/18 ,  A23L1/00 ,  A23P1/12 ,  B29C47/60 ,  B30B11/00 ,  B30B11/24 ,  A23P1/00

CPC分类号： B30B11/24 ,  A23K40/20 ,  A23K50/00 ,  A23K50/42 ,  A23K50/80 ,  A23P30/20 ,  B30B11/005 ,  B30B11/243 ,  B30B15/34 ,  B29C47/0009 ,  B29C47/60

摘要： Improved short length extrusion cooking devices (10) are provided which can achieve product throughput and quality characteristics of conventional long-barrel extruders. The short length extruders (10) of the invention include a relatively short barrel (14) having an inlet (18) and an endmost extrusion die (20). An elongated, helically flighted axially, rotatable screw assembly (22) is positioned within the barrel (14) and is coupled to motive means (39, 39a) for rotation of the assembly (22) at a speed of at least about 500 rpm. The device (10) may include an internal, apertured flow-restricting device (60, 110) which defines a mid-barrel choke point for the material being processed. An alternate extruder (120) is configured without a mid-barrel restriction and is designed to operate at essentially atmospheric internal pressure throughout the majority of the length of barrel (122) with a significant pressure rise in the final head (134) adjacent the extrusion die. Preferably, the barrel (14, 122) has an internal bore of generally frustoconical configuration with an effective length to maximum diameter ratio (L/D) of at least about 6. Novel extrusion processes and products are also provided, using extremely short extrusion barrel retention times to give cooked extrudates having essentially no amino acid or vitamin nutrient losses, and/or dense, highly cooked, low moisture feeds.

摘要翻译： 提供了改进的短长度挤压烹饪装置（10），其可以实现常规长筒挤出机的产品产量和质量特性。 本发明的短长度挤出机（10）包括具有入口（18）和最末端的挤出模具（20）的相对较短的筒体（14）。 细长的，螺旋形旋转的轴向可旋转的螺丝组件（22）定位在筒体（14）内并且联接到动力装置（39,39a），以用于以至少约500rpm的速度旋转组件（22）。 装置（10）可以包括内部有孔流动限制装置（60,110），其限定用于待处理材料的中筒阻塞点。 替代的挤出机（120）构造成没有中筒限制，并且被设计成在桶的整个大部分长度（122）内在基本上大气压下运行，而最终的头部（134）中邻近挤压件 死。 优选地，筒体（14,122）具有大致截头圆锥形构造的内孔，其具有至少约6的有效长度与最大直径比（L / D）。使用极短的挤出筒也提供了新的挤出工艺和产品 保留时间以产生基本上不具有氨基酸或维生素营养物质损失的煮熟的挤出物，和/或致密的，高度熟化的低水分进料。

公开(公告)号：US6103290A

公开(公告)日：2000-08-15

申请号：US886709

申请日：1997-07-01

申请人： Lavon G. Wenger

发明人： Lavon G. Wenger

IPC分类号： A23K1/00 ,  A23K1/18 ,  A23L1/00 ,  A23P1/12 ,  B29C47/60 ,  B30B11/00 ,  B30B11/24 ,  A23P1/00

CPC分类号： B30B11/24 ,  A23K40/20 ,  A23K50/00 ,  A23K50/42 ,  A23K50/80 ,  A23P30/20 ,  B30B11/005 ,  B30B11/243 ,  B30B15/34 ,  B29C47/0009 ,  B29C47/60

摘要： Improved short length extrusion cooking devices (10) are provided which can achieve product throughput and quality characteristics of conventional long-barrel extruders. The short length extruders (10) of the invention include a relatively short barrel (14) having an inlet (18) and an endmost extrusion die (20). An elongated, helically flighted axially, rotatable screw assembly (22) is positioned within the barrel (14) and is coupled to motive structure (39, 39a) for rotation of the assembly (22) at a speed of at least about 500 rpm. The device (10) may include an internal, apertured flow-restricting device (60, 102) which defines a mid-barrel choke point for the material being processed. An alternate extruder (120) is configured without a mid-barrel restriction and is designed to operate at essentially atmospheric internal pressure throughout the majority of the length of barrel (122) with a significant pressure rise in the final head (134) adjacent the extrusion die. Preferably, the barrel (14, 122) has an internal bore of generally frustoconical configuration with an effective length to maximum diameter ratio (L/D) of at least about 6. Novel extrusion processes and products are also provided, using extremely short extrusion barrel retention times to give cooked extrudates having essentially no amino acid or vitamin nutrient losses, and/or dense, highly cooked, low moisture feeds. Twin screw extruders (232, 232a) with and without mid-barrel restriction elements (252-256) can also be provided, and include an internally tapered barrel (237) with correspondingly tapered, flighted, axially rotatable screws (238, 240).

摘要翻译： 提供了改进的短长度挤压烹饪装置（10），其可以实现常规长筒挤出机的产品产量和质量特性。 本发明的短长度挤出机（10）包括具有入口（18）和最末端的挤出模具（20）的相对较短的筒体（14）。 细长的，螺旋形旋转的轴向可旋转螺丝组件（22）定位在筒体（14）内并且联接到动力结构（39,39a）以用于以至少约500rpm的速度旋转组件（22）。 装置（10）可以包括内部有孔流动限制装置（60,102），其限定用于待处理材料的中筒阻塞点。 替代的挤出机（120）构造成没有中筒限制，并且被设计成在桶的整个大部分长度（122）内在基本上大气压下运行，而最终的头部（134）中邻近挤压件 死。 优选地，筒体（14,122）具有大致截头圆锥形构造的内孔，其具有至少约6的有效长度与最大直径比（L / D）。使用极短的挤出筒也提供了新的挤出工艺和产品 保留时间以产生基本上不具有氨基酸或维生素营养物质损失的煮熟的挤出物，和/或致密的，高度熟化的低水分进料。 也可以提供具有和不具有中筒限制元件（252-256）的双螺杆挤出机（232,232a），并且包括具有相应锥形的，可旋转的，可轴向旋转的螺钉（238,240）的内锥形筒（237）。

公开(公告)号：US5783240A

公开(公告)日：1998-07-21

申请号：US733118

申请日：1996-10-16

申请人： Lavon G. Wenger ,  Bobbie W. Hauck ,  Elmer J. Osterhaus

发明人： Lavon G. Wenger ,  Bobbie W. Hauck ,  Elmer J. Osterhaus

IPC分类号： A23K1/00 ,  A23K1/18 ,  A23K1/20

CPC分类号： A23K50/80 ,  A23K40/20 ,  Y10S426/805

摘要： A method of producing extrudates such as high protein, high fat sinking aquatic feeds is provided wherein a high protein starting material is initially preconditioned and passed through an extruder; in the extruder barrel a zone of reduced pressure is created upstream of the die for densifying the final extrudate. Fat may be added to the starting mixture at any desired point in the process, and/or may be added as a surface coating to the final extrudate. Preferably, the method further involves measuring a density value of the extrudate such as bulk density, and adjusting the magnitude of the reduced pressure conditions in the barrel in response to such measurement.

摘要翻译： 提供了一种生产高蛋白，高脂肪沉降水生饲料的挤出物的方法，其中高蛋白原料最初被预处理并通过挤出机; 在挤出机筒体中，在模具的上游产生减压区域，用于致密化最终的挤出物。 可以在该方法中的任何所需点将脂肪加入起始混合物中，和/或作为表面涂料加入到最终挤出物中。 优选地，该方法还包括测量挤出物的密度值，例如体积密度，以及响应于这种测量来调节桶中的减压条件的大小。

公开(公告)号：US5242292A

公开(公告)日：1993-09-07

申请号：US917962

申请日：1992-07-24

申请人： Lavon G. Wenger

发明人： Lavon G. Wenger

IPC分类号： A23K1/20 ,  A23K1/00 ,  A23N17/00 ,  A23P1/02 ,  B30B11/22 ,  B30B11/24

CPC分类号： B30B11/24 ,  A23K40/20 ,  A23N17/005 ,  A23P10/25 ,  B30B11/221 ,  Y10S425/23

摘要： An apparatus (10) and method for the production of sterile, pelleted feed products is provided which includes an extruder device (12) equipped with a pelleting head (14) adjacent the outlet end of the extruder barrel (17). The pelleting head (14) includes an annular die section (52) having die openings (58) therethrough which is secured to the extruder barrel (17), forming an extension thereof; a rotatable, multiple-vane plate (66) is secured to the screw (42) of the device (12) and cooperates with the die section (52) to form final pellets. A rotatable knife (16) serves to cut emerging extrudate so as to size the pellets. In an alternative embodiment, the plate (66) is separately powered for rotation independent of the extruder screw (17), preferably by means of a prime mover (102) coupled with a short extruder screw section (100) which supports the plate (66). Preferably, the extruder device (12) is equipped with an upstream preconditioner (40) serving to moisturize and uniformly mix dry feed ingredients. The preconditioner also at least partially precooks the mixture and subjects the same to time-temperature conditions for sterilization purposes.

摘要翻译： 提供了一种用于生产无菌，沉淀的饲料产品的设备（10）和方法，其包括装备有邻近挤出机筒（17）的出口端的造粒头（14）的挤出机装置（12）。 造粒头（14）包括具有穿过其中的模具开口（58）的环形模具部分（52），其固定到挤出机筒体（17）上，形成其延伸部分; 可旋转的多叶片板（66）固定到装置（12）的螺钉（42）上并与模具部分（52）配合以形成最终的颗粒。 可旋转刀（16）用于切割出现的挤出物以使颗粒尺寸。 在替代实施例中，板（66）单独供电以独立于挤出机螺杆（17）进行旋转，优选地通过与支撑板（66）的短挤出机螺杆部分（100）联接的原动机（102） ）。 优选地，挤出机装置（12）装备有上游预处理器（40），用于保湿和均匀混合干饲料成分。 预处理器还至少部分预混合混合物并将其接受相同的时间温度条件用于灭菌目的。

公开(公告)号：US06482453B2

公开(公告)日：2002-11-19

申请号：US09818484

申请日：2001-03-27

申请人： Lavon G. Wenger ,  Bobbie W. Hauck

发明人： Lavon G. Wenger ,  Bobbie W. Hauck

IPC分类号： A23P100

CPC分类号： B29C47/50 ,  A23P30/20 ,  B29C47/0009 ,  B29C47/10 ,  B29C47/1018

摘要： Improved, high-capacity processing systems including a processing device such as an extruder (26) or a pellet mill (P) are provided which minimize product losses and permit the user to conduct multiple, segregated short runs with a minimum of down time between runs. The extruder systems (20, 220) include an extruder assembly (21, 221) having a special, multiple-position die assembly (28), as well as an upstream preconditioner (24) and feed bin assembly (22). A variable speed, variable output discharge screw feeder (78) is located between the preconditioner outlet (62) and extruder barrel inlet (90). A PLC-type controller (30) coupled to the extruder assembly components establishes a choke full condition at the discharge feeder (78) so that continuous uninterrupted flow of preconditioned material to the extruder (26) at a uniform mass flow rate is maintained for as long as possible. In preferred forms, load cells (46, 72) are operatively coupled to the bin assembly (22) and preconditioner (24) so as to monitor material flow through the systems (20, 220). A multiple stage cascade-type dryer assembly (29) is provided downstream of extruder (26). The assembly (29) is controlled via the controller (30) in coordination with the extruder assemblies (21, 221) so as to maintain the segregation between separate product runs throughout the drying operation. Pellet mill systems include bin and preconditioner assemblies (22, 24) operatively coupled with a pellet mill (P).

摘要翻译： 提供了改进的大容量处理系统，包括诸如挤出机（26）或颗粒磨（P）的处理装置，其最小化产品损失并且允许用户以最小的运行之间的停机时间进行多个分离的短运行 。 挤出机系统（20,220）包括具有特殊的多位置模具组件（28）以及上游预处理器（24）和进料仓组件（22）的挤出机组件（21,221）。 可变速度可变输出排出螺旋进料器（78）位于预处理器出口（62）和挤出机筒入口（90）之间。 连接到挤出机组件部件的PLC型控制器（30）在排放进料器（78）处建立扼流器完整状态，使得以均匀的质量流速连续不间断地将预处理的材料流入挤出机（26），保持为 尽可能长 在优选形式中，称重传感器（46,72）可操作地联接到箱组件（22）和预处理器（24），以便监测通过系统（20,220）的材料流。 多级级联式干燥器组件（29）设置在挤出机（26）的下游。 与挤出机组件（21,221）协调地通过控制器（30）控制组件（29），以便在整个干燥操作期间保持分开的产品运行之间的偏析。 造粒机系统包括与造粒机（P）可操作地连接的箱和预处理器组件（22,24）。

公开(公告)号：US06465029B2

公开(公告)日：2002-10-15

申请号：US09990650

申请日：2001-11-20

申请人： Lavon G. Wenger ,  Bobbie W. Hauck

发明人： Lavon G. Wenger ,  Bobbie W. Hauck

IPC分类号： A23P100

CPC分类号： B01F13/10 ,  A21C1/003 ,  A23P30/20 ,  B29C47/0009 ,  B29C47/10 ,  B29C47/1018 ,  B29C47/50

摘要： Improved, high-capacity processing systems including a processing device such as an extruder (26) or a pellet mill (P) are provided which minimize product losses and permit the user to conduct multiple, segregated short runs with a minimum of down time between runs. The extruder systems (20, 220) include an extruder assembly (21, 221) having a special, multiple-position die assembly (28), as well as an upstream preconditioner (24) and feed bin assembly (22). A variable speed, variable output discharge screw feeder (78) is located between the preconditioner outlet (62) and extruder barrel inlet (90). A PLC-type controller (30) coupled to the extruder assembly components establishes a choke full condition at the discharge feeder (78) so that continuous uninterrupted flow of preconditioned material to the extruder (26) at a uniform mass flow rate is maintained for as long as possible. In preferred forms, load cells (46, 72) are operatively coupled to the bin assembly (22) and preconditioner (24) so as to monitor material flow through the systems (20, 220). A multiple stage cascade-type dryer assembly (29) is provided downstream of extruder (26). The assembly (29) is controlled via the controller (30) in coordination with the extruder assemblies (21, 221) so as to maintain the segregation between separate product runs throughout the drying operation. Pellet mill systems include bin and preconditioner assemblies (22, 24) operatively coupled with a pellet mill (P).

公开(公告)号：US5694833A

公开(公告)日：1997-12-09

申请号：US685893

申请日：1996-07-18

申请人： Lavon G. Wenger

发明人： Lavon G. Wenger

IPC分类号： A23K1/00 ,  A23K1/18 ,  A23L1/00 ,  A23P1/12 ,  B29B7/42 ,  B30B11/24 ,  A23J1/00

CPC分类号： B29C47/6087 ,  A23K40/20 ,  A23K50/00 ,  A23K50/42 ,  A23K50/80 ,  A23P30/20 ,  B29B7/42 ,  B29C47/662 ,  B29C47/668 ,  B30B11/24

摘要： Improved short length extrusion cooking devices (10) are provided which can achieve product throughput and quality characteristics of conventional long-barrel extruders. The short length extruders (10) of the invention include a relatively short barrel (14) having an inlet (18) and an endmost extrusion die (20). An elongated, helically flighted axially, rotatable screw assembly (22) is positioned within the barrel (14) and is coupled to motive means (39, 39a) for rotation of the assembly (22) at a speed of at least about 500 rpm. The device (10) includes an internal, apertured flow-restricting device (60, 110) which defines a mid-barrel choke point for the material being processed. Preferably, the barrel (14) has an internal bore of generally frustoconical configuration with an effective length to maximum diameter ratio (L/D) of at least about 6.

摘要翻译： 提供了改进的短长度挤压烹饪装置（10），其可以实现常规长筒挤出机的产品产量和质量特性。 本发明的短长度挤出机（10）包括具有入口（18）和最末端的挤出模具（20）的相对较短的筒体（14）。 细长的，螺旋形旋转的轴向可旋转的螺丝组件（22）定位在筒体（14）内并且联接到动力装置（39,39a），以用于以至少约500rpm的速度旋转组件（22）。 装置（10）包括内部有孔流动限制装置（60,110），其限定用于待处理材料的中筒阻塞点。 优选地，筒体（14）具有大致截头圆锥形构造的内孔，其有效长度与最大直径比（L / D）至少约为6。

公开(公告)号：US06688217B2

公开(公告)日：2004-02-10

申请号：US10228405

申请日：2002-08-26

申请人： Bobbie W. Hauck ,  Lavon G. Wenger

发明人： Bobbie W. Hauck ,  Lavon G. Wenger

IPC分类号： B30B914

CPC分类号： B29C47/402 ,  A23P30/20 ,  B29B7/801 ,  B29C47/0014 ,  B29C47/0801 ,  B29C47/38 ,  B29C47/60 ,  B29C47/6012 ,  B30B9/16 ,  B30B9/26

摘要： An improved twin screw extruder device (14) is provided which is capable of producing a wide variety of high quality extrudates having greatly varying final properties, without the need for extensive machine modifications. The extruder (14) includes a barrel (16) together with a co-rotating twin screw assembly (22). The assembly (22) is made up of a pair of screws (50, 52) having central, tapered shafts (54, 56) equipped with outwardly extending helical flighting (58, 60); the screws (50, 52) are non-parallel and are positioned so that the flighting (58, 60) thereof is intercalated along the length of the screws (50, 52). The fighting is of specialized configuration and tapers along the length of the screws (50, 52) preferably at an angle of taper different than that of the shafts (54, 56); moreover, the width of the outer flighting surfaces (70, 72) increases along the length of the shafts (54, 56). This screw geometry defines a series of alternating upper and lower close-clearance high-pressure nip areas (78) defined by the flighting (58, 60) which serves to propel an extrudable mixture forwardly towards the outlet end (20) of the barrel (16). However, passageways (80) and kneading zones (82) are also defined between the screws (50, 52), which assures full mixing, shearing and cooking of the material. The extruder device (14) is capable of producing high density sinking aquatic feeds as well as expanded, low density products merely by changing the rotational speed of the screws (50, 52) together with appropriate temperature control. In another embodiment, a fluid extraction extruder (138) is provided having a specialized extruder head (140) including an outer shell (144) and an inner, elongated, slotted sleeve (152).

摘要翻译： 提供了一种改进的双螺杆挤出机装置（14），其能够生产具有极大变化的最终性能的各种各样的高质量挤出物，而不需要大量的机器修改。 挤出机（14）包括与同向旋转的双螺杆组件（22）一起的筒体（16）。 组件（22）由一对具有中心的锥形轴（54,56）的螺钉（50,52）组成，所述锥形轴配备有向外延伸的螺旋形飞行（58,60）; 螺钉（50,52）不平行并且被定位成使得其沿着螺钉（50,52）的长度插入其中。 战斗具有特别的配置，沿着螺钉（50,52）的长度倾斜，优选地与不同于轴（54,56）的锥度不同。 此外，外侧飞行表面（70,72）的宽度沿轴（54,56）的长度增加。 该螺钉几何形状限定了一系列交替的上部和下部闭合间隙高压压区（78），其由所述排放（58,60）限定，用于将可挤压混合物向前推向筒的出口端（20） 16）。 然而，通道（80）和捏合区域（82）也被限定在螺钉（50,52）之间，这确保了材料的完全混合，剪切和烹饪。 挤出机装置（14）能够通过在适当的温度控制下改变螺杆（50,52）的转速而产生高密度下沉水生饲料以及膨胀的低密度产品。 在另一个实施例中，提供流体提取挤出机（138），其具有包括外壳（144）和内部细长开槽套筒（152）的专用挤出机头（140）。