1 unit laboratory single screw extruder type le25-30/p, for general extrusion and compounding of pe, pp, ps, abs, nylon, pet etc., equipped as following: 1台实验室单螺杆挤出机le25-30p，用作pe、pp、ps、abs、尼龙、pet等树脂的通用用途挤出或共混。

screw and barrel in high-grade nitride hardened steel, screw diameter 25 mm and l/d ratio of 30. 机筒材质由高级氮化钢构成，螺杆直径25毫米，长径比30。

plain 30 l/d screw with compression 1: 3.5. alternatively equipped with compounding screw with maddock mixing section at 21 d and with final pineapple type mixing device at screw tip.

普通30倍长径比压缩比为1:3.5，可选安装混料螺杆从21d位置开始带maddock混合区，而在挤出机头带有菠萝型混合元件。

water-cooling of feed section as well as lower part of hopper funnel.

供料区和供料口下部水冷。

large rectangular feed opening in barrel for efficient feeding of both pellets and powders. 料筒上方大型矩形供料口确保粒料和粉料的有效供料。

screw speed infinite variable from 0 to 300 rpm. 螺杆转速从0到300rpm无级可调。

large oversized 4 kw ac motor drive, coupled directly to a helical gearbox. the gearbox is flange mounted directly to a trust bearing housing containing the screw-connecting shaft, which is resting in a heavy-duty trust bearing arrangement. 4千瓦交流电机直接同螺旋齿轮箱联接，齿轮箱直接同一个含螺杆连接轴的止推轴承箱连接，螺杆连接轴安装在一个重型止推轴承系统上。

programmable frequency inverter for infinite variable screw-speed and high torque even at low screw speeds. digital readout of the screw rpm and motor power (amp) on the control panel. the inverter is connected via plug in cables to the pressure instrument on the filter test unit. with this closed loop system, the extruder will be regulated to deliver a precise flow of resin to the gear pump. 可编程频率换流器可确保在低螺杆速度的情况下无级调节螺杆转速和高扭矩，螺杆转速和电机输出功率可在控制面板上数显输出。换流器通过内建的电缆筒过滤测试模块的压力传感器连接，通过闭环控制系统，挤出机可以输出高流量精度的树脂至齿轮泵。

se-lector switch on the control panel with manual and automatic mode. in the automatic mode, the pressure instrument on the filter test unit as described above controls the extruder speed. 控制面板上有手动/自动切换旋钮。在自动模式下，过滤检测模块中的压力仪器会控制挤出机速度。

4 heating zones on barrel, all with air-cooling. each zone with multiple rows of copper fins for high cooling efficiency, coupled with oversized cooling fans mounted in the extruders sub cabinet. large wattage on heaters coupled with the efficient cooling system ensures very fast heating and cooling of each zone. 机筒上有4个加热区域，都带有空气冷却装置；每个区域附带大冷却风扇的多排铜叶片可获得高冷却效果，高功率的加热模块同有效的冷却系统相结合可以确保每个区域的快速加热和冷却。

digital programmable set and readout temperature controllers for all 4 barrel heating zones as well as for one spare zone for connecting to downstream equipment such as a strand die etc. the controllers are coupled to solid-state relays for accurate heat control and are equipped with auto tuning as well as linear compensation for very precise temperature regulation over entire working range. 带有针对所有4个加热区和额外的一个用于连接下游设备如线模头的数字显示可编程温度控制器，温控同固态继电器连接可获得准确的加热控制，同时它还带有自动调节和线性补偿功能用于在整个工作范围内获得精确的温度调节。

c-clamp type flange on the extruder head. 挤出机头上的c-型法兰。

full steel cover over the extruder barrel with air venting grid on top. 挤出机机筒盖板为带有通风开口的全钢材质。

modern designed extruder body where all components are fully enclosed. 现代设计的挤出机机体可以将所有部件整合。

large built in cabinet for all electric components with swing open doors fully separated from the other extruder components. 可容纳所有电子部件的电气箱带有拉门并同所有其它挤出机部件隔离。

convenient swing away control cabinet, which enable full view from all desired angles. 易于变换角度的控制柜可以从任何角度方便地得以全览。

stainless steel hopper, mounted on a turret valve with spring lock pin and with the following three positions: fully closed, fully open and discharge through a pipe at the front of the extruder. 不锈钢料斗下方有一个带弹簧锁拴的塔式筏，它共有三种状态：全关、全开、通过挤出机前方的管道快速下料。

extruder body on four heavy-duty lockable casters. 本体安装在四个重型可锁脚轮上。

1 unit filter test unit comprising of

 一个过滤测试模块包括:

filter test body with a streamlined integrated gear pump heated with electric band heaters. the gear pump delivers 3 cc/rpm and is driven by an infinite variable speed 1 hp geared ac motor. a programmable inverter controls the speed of the gear pump. a pressure and melt temperature sensor is in-serted in the channel to the gear pump inlet. the pressure sensor is connected to a pressure control instrument that in turn will regulate the extruder screw speed to ensure that it delivers a steady flow of polymer at a constant pressure.

带有流线型设计齿轮泵的过滤测试仪由电加热带加热，齿轮泵流量为3毫升/转并由一台hp无级调速换档交流电机驱动，齿轮泵的速度由可编程换流器控制。一个压力和熔体温度传感器安装在齿轮泵的进口通道中，压力传感器同压力控制元件连接从而控制挤出机螺杆转速终确保聚合物熔体以恒定的压力稳定运行。

the melt temperature sensor will register accurately the temperature of the melt before entering the gear pump. it is also connected to the gear pump drive to ensure that the pump is not started unless proper melt temperature has been reached.

熔体温度传感器将会准确纪录聚合物熔体在进入齿轮泵之间的温度。

filter test head mounted in line with the gear pump and extruder. the breaker plate for the 44 mm filter disks is mounted on a retainer plate with a convenient handle so that it can be quickly in-serted and removed from the side of the filter test head. a second combined melt temperature and pressure sensor is in-serted just before the filter disk location. this will sense very accurately the pressure building up in front of the filter disk as well as the temperature of the melted polymer. the filter test head is heated with band heater and a digital controller regulates the temperature of the entire filter head very accurately with auto tuning function. the filter test with gear pump has a working range of 0 to 300 bars pressure.

过滤测试头同齿轮泵和挤出机在线集成为一体，44mm滤盘安装在固定板上，通过一个把手可以方便地将其从过滤测试头的侧面插入和移出。此设计将非常准确地得到滤盘前方的熔体压力和温度。过滤测试头通过带状加热器加热，同时通过一个数字控制器和自动调整装置精确地控制整个过滤测试头的温度。带有齿轮泵的过滤测试头的工作范围为0到300bar的压力。

a control panel mounted on a pillar from the body of the filter test head is equipped with the following instruments过滤测试头的控制面板包括以下部分:

ü     two digital pressure instruments, one connected to the pressure transducer to the entrance of the gear pump, the other in front of the filter pack. 两个压力模块，一个连接到齿轮泵入口的压力变化器，另一位于滤盘前。

ü     two digital temperature indicators showing the melt temperature before pump and before filter disk. 两个温度传感器一个显示齿轮泵前的熔体温度，另一显示滤盘前的温度。

ü     one panel mounted continuous paper sheet recorder with 4 channels, which will print in four colours the pressures and temperatures registered before the filter head respectively before the filter disk. 一个面板带有连续的四通道记录仪，它可以4种颜色将过滤头和过滤盘之前的熔体温度和压力分别打印出来。

ü     digital temperature control instrument to regulate the temperature of the filter test body. 数字温控元件控制过滤测试模块的本体温度。

ü     control buttons for the filter test head. 过滤测试头的控制按钮。