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    • 10. 发明申请
    • EXTRUDER MID-BARREL ADJUSTABLE VALVE ASSEMBLY
    • 挤出机中巴可调节阀组件
    • US20070237850A1
    • 2007-10-11
    • US11733124
    • 2007-04-09
    • Philip B. WiltzGalen J. Rokey
    • Philip B. WiltzGalen J. Rokey
    • B29C47/60
    • B29C48/535B29C48/09B29C48/2552B29C48/268B29C48/395B29C48/40B29C48/688
    • Flow restriction assemblies (10,10a,10b) adapted to be mounted on single or twin screw extruders (16,16b,32) in order to allow selective adjustment of material flow through the extruders (16,16b,32), with consequent alteration in back pressure, shear and mechanical energy imparted to the material being processed. The assemblies (10,10a,10b) each have shearlock(s) (12,12a,12b) mounted on the extruder drive shaft(s) (30,30a,30b), together with restriction units (14,14a,14b). The units (14,14a,14b) have opposed flow restriction components (48,50,48a,50a,48b,50b) supported on opposite sides of the corresponding shearlocks (12,12a,12b) and mounted for a substantially aligned and rectilinear back and forth sliding movement. In this fashion, the clearance between the inner surfaces (54,54a,54b) of the components (48,50,48a,50a,48b,50b) and the shearlocks (12,12a,12h) can be selectively adjusted. The assemblies (10,10a,10b) are small in size and can be located at various points along the length of extruders (16,32). Preferably, the restriction components (48,50,48a,50a,48b,50b) are moveable such that the inner surfaces (54,54a,54b) thereof may be located inboard of the outer surfaces (29,29a,29b) of the screw flighting.
    • 流量限制组件(10,10a,10b)适于安装在单螺杆或双螺杆挤出机(16,16b,32)上,以便允许选择性地调节通过挤出机(16,16b,32)的材料流动, 随之而来的是对所加工材料的背压,剪切和机械能的改变。 组件(10,10a,10b)各自具有安装在挤出机驱动轴(30,30a,30b)上的剪切块(12,12a,12b)以及限制单元 14,14 a,14 b)。 单元(14,14a,12b)具有支撑在相应的剪切锁(12,12a,12b)的相对侧上的相对的流动限制部件(48,50,48a,50a,48b,50b) 并安装成基本上对齐且直线的前后滑动运动。 以这种方式,组件(48,50,48a,50a,48b,50b)和剪切锁(12,12a,12h)的内表面(54,54a,54b)之间的间隙 )可以选择性地进行调整。 组件(10,10a,10b)的尺寸小,并且可以位于沿挤出机(16,32)的长度的各个点处。 优选地,限制部件(48,50,48a,50a,48b,50b)可移动,使得其内表面(54,54a,54b)可以位于外表面(29, 29 a,29 b)的螺丝飞行。