the scientific 26 mm co-rotating twin screw extruders is made with a complete modular build up of the clam shell barrel, where each barrel section have a length of 4 d or 104 mm. two standard lengths are available with 32 and 40 l/d and with drive powers of 7.5 respectively 11 kw. the modular clam shell barrel is, from january 2003, supplied as high temperature versions and equipped with exchangeable barrel lining in-serts for optimum economy and ease of replacement. these standard in-serts are made from a very high grade acid resistant tool steel which is through hardened to over 60 rc and which can withstand high processing temperatures of up to 400 °c.

26毫米实验室同向双螺杆挤出机由模块化的蚌壳式机筒组成，机筒的每个部分都有4倍直径或104毫米长。有两种标准长度可选：32和40倍l/d，同时驱动马达为7.5kw和11kw可选。模块式的蚌壳式机筒为高温型号，而且内衬为可更换插入式模块，易于更换并且非常经济。这些标准插入模块由硬化处理的高等级工具钢制成，硬度超过rc60并且可承受高400 °c的处理温度。

the screws are built up from individual single elements mounted on hexagonal hardened shafts. each individual kneading elements is supplied in many angles to enable optimum variations in screw configurations. the screw components are made from high grade tool steel which is through hardened but made with a slightly softer hardness than the barrel linings to ensure optimum life time for both elements and barrel in-serts.

螺杆由安装在六角形硬化轴上的独立的单元构成，每个单元由多个角度组合来获得的螺杆配置。螺杆组件由高等级工具钢制成并硬化，但其硬度稍低于机筒内衬从而确保螺杆单元和机筒内衬的生命周期。

the whole clam shell barrel assembly is split in the center and can be easily swung open after loosening the barrel bolts. this gives easy access to the screws for cleaning or changing of screw elements and/or barrel in-serts as well as to observe the melt and compounding characteristics of the polymer being processed. the top half of the barrel is balanced so that very little force is needed to open it up and with this the hazard of accidental heavy closing is eliminated.

整个蚌壳式机筒组件由中间分开，旋松紧固螺栓后可以轻易地向两侧打开，这样可以轻易地清洁料筒或更换螺杆组件/机筒内衬模块，当然也可观察被加工聚合物的溶解和共混特性。机筒上部两侧的对旋转轴保持水平，这样用很小的力量就可以打开机筒并且避免因失误关闭机筒的危险。

each barrel zone is equipped with both water cooling and electric cartridge heating. this allows for complete process control at each zone of the barrel and the water cooling coupled with the high wattage heating enables fast temperature changes of each zone when changing processing conditions from one compound to another. the water cooling is done from fine channels inside each barrel module and regulated with individual solenoid valves from its designated temperature controller.

每个机筒区域都同时配备了水冷和电加热组件，这就允许对机筒的每个区域进行的控制。当从一个产品切换到另一个共混产品时，水冷装置和大功率加热结合的方式可每个区域的快速温度改变。水冷是通过每个机筒模块内的细通道实现的并由温度控制器控制的独立螺旋阀调节。

the extruders are also, as standard, equipped with a 4 holes strand die mounted on a hinged support and connected to the barrel with a c-clamp. the barrel end part is also equipped with an easy removable breaker plate which enables production either with or without screen packs. the strand die swings aside simply by loosening the c-clamp to facilitate easy cleaning and also to enable connection of other down stream equipment to the twin screw extruder.

挤出机配有安装在带铰链法兰上的4孔线状模头，料筒末端带有易移开的断路盘可确保需要或不要滤网状态的迅速切换。线模头可通过松开c型夹具轻易地打开，由此可以方便清洁同时并利于客户联接其他下游设备。

the extruders can optionally be equipped with one or more twin screw side feeders which are connected to the side of the barrel module. a special barrel module with opening as well as plug for side feeder is needed for this option and the extruder can be supplied with several plugged side feeder modules for optimum flexibility of side feeder location. the side feeder have a infinite variable speed drive with 26 mm diameter twin screws built up from same elements as the main screws, and with an l/d ratio of 10. the barrel of the side feeder is equipped with water cooling as standard.

挤出机可选择地安装一个或多个双螺杆侧向加料器，它们同机筒的侧面相连。这样就需有一个特殊的带有开口的机筒单元，这样螺杆就可带有针对侧向加料的几个预留位置从而获得侧加料的选择性。侧加料带有由无级跳速电机驱动的长径比10的双螺杆，整个侧加料系统的机筒也同样有水冷却。

the extruders are supplied complete with a stainless steel volumetric hopper feeder with a “spiral type” screw and with a stirring arm above the feeding screw. the hopper feeder can optionally also be equipped with twin screws.

挤出机安装了带有“螺旋型螺杆”以及喂料螺杆上方搅拌臂的不锈钢体积料斗加料器。料斗加料器可选择地配备双螺杆。

the 32 l/d extruder is, as standard, supplied with a vacuum zone on one of the barrel modules and the 40 l/d also have an additional atmospheric vent opening which can be converted to vacuum. the vacuum vent zone has a stainless steel vent port housing which is equipped with a sight glass and vacuum regulator with gauge. the housing is connected to a large vacuum filter and to a vane type vacuum pump mounted in the sub cabinet. further the extruders are supplied with a torque limiter on the motor drive shaft as well as a large, clear vision control panel with symbols for all functions.

32 l/d挤出机标准型在其中的一个机筒模块带有一个排气孔，40 l/d还带有一个额外的排气孔，它们都可以转换成真空排气。可选的真空排气区域带有不锈钢排气舱它带有一个玻璃视窗和带真空表的真空调节器。排气舱通过大型真空过滤器同安装在下方设备柜中的叶片式真空泵相连。

summary of standard features (标准性能小结):

¨     26 mm co-rotating segmented screws where each segment can be placed anywhere on the hexagonal screw core shaft for optimum flexibility of screw configurations. the kneading elements are supplied as single sectors that can be placed against each other in various angles enabling numerous kneading and shearing functions.

26毫米同向旋转模块式螺杆，其中每个模块可以任意安装在六角形螺杆轴的任何位置来获得螺杆的优化配置；每个模块可以对应不同装配角度组合从而得到不同的挤压和剪切功能。

¨     modular clam shell barrel available with up to 40 l/d length and where each module has a length of 4 d. barrel with balanced hinged top part for easy access to the screws.

模块式的蚌壳料筒可达40 长径比（l/d），其中每个模块为4倍直径（4 d）。

¨     barrel is also available as a fully closed version but still with modules (barrel sections) with a 4 l/d length.

也可提供全闭合料筒，但仍然是4l/d长度的模块组合配置（料筒部分）。

¨     the modular clam shell barrel is, from january 2003, equipped with exchangeable barrel lining in-serts made from a special high grade tool steel which have been through hardened to over 60 rockwell c. this special steel also allows for high temperature extrusions of up to 400 °c.

模块化的蚌壳式机筒带有可更换的插入式内衬，它们由经硬化处理的特殊工具钢制成，洛氏硬度超过rc60并且可承受高400 °c的处理温度。

¨     the screw and kneading elements are also made from high grade tool steel with through hardening and with a surface hardness of slightly below the hardness of the barrel in-serts. also the hexagonal screw shafts are made of treated tool steel for optimum stiffness and high torque applications.

螺杆和挤压单元也由硬化处理的工具钢制成，但其表面硬度稍低于机筒内衬的硬度。同样六角形螺杆轴也由经处理的工具钢制成来获得优化的硬度并符合高扭矩应用的需要。

¨     water-cooling as well as electric heating of each barrel module.

每个料筒单元采取水冷和电加热。

¨     high torque drives with oversized gearbox for screw speeds up to 800 rpm and motor power of 7,5 kw for the 32 l/d versions and 11 kw for the 40 l/d versions.

高扭矩马达配合大型齿轮箱可使螺杆速度高达800 rpm（转/分），对于32 l/d型号马达功率达到7.5kw而对40l/d型号功率达到11kw。

¨     stainless steel vent housing on barrels equipped with sight glass and vacuum gauge as well as vacuum pump protected with large stainless steel filter bowl, mounted in sub cabinet of extruder. the 40l/d extruder is equipped with an additional zone with vent opening.

不锈钢排气装置带有一个玻璃视窗和真空表。大不锈钢滤碗保护的真空泵，安装在挤出机的副机柜中。40l/d挤出机带有一个额外的排气口区域。

¨     variable speed single screw (spiral type) hopper feeder with stirring arm over the screws. feeder components are equipped with quick locks for easy cleaning and the whole feeder assembly can easily be slid backwards for access to the extruder in-feed opening.

在螺杆上方有带活动臂的可变速单螺杆（螺旋型）料斗喂料器，喂料器部件装有快速锁定装置便于快速清洁，而且整个喂料组件可轻易地向后打开从而暴露出挤出机加料口。

¨     practical 4-holes strand die mounted on hinged support and connected to extruder flange with a c-clamp. also equipped with easy removable breaker plate in extruder flange, enabling production with or without a screen pack.

安装在铰链支撑的4孔线模头通过一个c型夹具同挤出机法兰联接。同样系统在挤出机法兰上配备了易移开的断路盘用来进行带或不带滤网的生产。

¨     100 bar pressure transducer at screw end, also equipped with melt temperature sensor. additionally melt sensors are placed on every second module, connected to digital temperature indicators on the control panel.

螺杆末端装有100bar压力传感器，同样带有熔体温度传感器。另外在每第二模块上还安装了熔体传感器，其同控制面板上的数字温度指示器相联接。

¨     screws protected by a torque limiter mounted in between motor and gear box.

螺杆由安装在马达和齿轮箱之间的扭矩限制器保护。

¨     modern design with a sturdy sub cabinet containing all electric and electronic components in compartments completely separated from the vacuum pump assembly.

现代设计的坚固的电器柜包括了所有的电器和电子模块，它们同真空泵模块分隔开来。

¨     large clear vision control panel, mounted on a swing arm on the rear of the extruder and containing the following 安装在挤出机后方一个摆动臂上的大控制面板包括以下部件:

·       one digital self-tuning programmable temperature controller for each barrel model (8 units for the 32 l/d version and 10 units for the 40 l/d version.

对应每一个料筒模块的一个数字式自调节可编程温度控制器（对32l/d型为8单元而对40l/d型为10单元。）

·       programmable pressure controller with digital indication of the screw tip pressure.

带有数字显示的针对螺杆头部压力的可编程压力控制器。

·       digital melt temperature indicators showing resin temperature at screw tip as well as at every second module. for the 32 l/d version there are then totally 4 melt temperature indicators and the 40 l/d version has 5 of the same indicators.

数字熔体温度指示器显示螺杆头部以及第二节模块的熔体温度，对于32 l/d型带有4组熔体温度指示器而40l/d型带有5组温度指示器。

·       digital rpm indicators for main screws speed as well as feeder screws speed with up/down scroll buttons to regulate speeds.

数字式转速指示器显示了主螺杆速度以及加料螺杆的速度，它带有上下箭头按钮来直接调节速度。

·       digital ampere meter showing load in percent of max load of drive motor.

数字电流表以载荷百分比的方式显示了实际载荷的大小。

·       clear warning lamps for（报在以下情况报警）:

over pressure at screw tip (depending on your individual set max pressure) 螺杆头部超压（根据预设的压力值）

cooling water pressure too low 冷却水压力过低

clam shell open 料筒蚌壳结构打开

motor overload 马达过载

torque limiter overload 扭矩过载

feeder overload 喂料器过载

temperature not reached set value on any of the controllers due for instance broken heating element 温度在任何一个控制器上未达到设定值，如一个加热单元损坏的情况。