热塑性聚氨酯弹性体生产装置及方法技术领域 本发明涉及一种聚合物生产装置，尤其涉及一种热塑性聚氨酯弹性体(TPU)生产装置及方法。 BACKGROUND production apparatus and method the thermoplastic polyurethane elastomer  The present invention relates to a polymer producing apparatus, and particularly to apparatus and method for the production of thermoplastic polyurethane elastomer (TPU). 背景技术 TPU是由低聚物多元醇软段与二异氰酸酯、扩链剂硬段构成的线性嵌段共聚物。 BACKGROUND  TPU is a soft segment polyol oligomer with a diisocyanate, a chain extender constituting the hard segment agent is a linear block copolymer. TTO是由二苯甲烷二异氰酸酯(MDI)或甲苯二异氰酸酯(TDI)等二异氰酸酯类分子和大分子多元醇(POLYOL)、低分子多元醇(扩链剂)共同在灌注机和双螺杆挤出机中连续完全反应聚合而成并经水中造粒的高分子材料。 TTO is diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI), etc. diisocyanate molecules and large molecules polyol (POLYOL), a low molecular weight polyol (chain extender) together in a filling machine and a twin screw extruder machine continuous polymerization reaction was complete water and dried granulated polymer material. 它在分子组成上以重复氨基甲酸酯基团为特征，同时含有尿素基甲酸酯、缩二脲、及酯键、醚键等其它基团。 It repeating molecular composition characterized by urethane groups, and urea-containing allophanate, biuret, and an ester bond, ether linkages, and other groups. 从分子结构上看，由刚性链段与柔性链段交替构成，其中刚性链段是由二异氰酸酯和扩链剂反应得到，柔性链段则由二异氰酸酯和大分子多元醇反应得到。 From the molecular structure, composed of alternating rigid segments and soft segments, wherein the hard segment is derived from a diisocyanate and a chain extender, the soft segment obtained by the diisocyanate and polyol molecules. 它和其它热塑性塑料相似，室温下具有橡胶弹性和塑料特性，高温下会熔成粘流体，可由注塑机加工(如挤出、注射、压延等)，无需混炼与硫化等后处理工艺，可节约能量，制品可回收再利用且其废弃后可自然分解，与一般泛用塑料(PVC)比较起来属于环保材料。 It is similar to other thermoplastics, having a rubber-elastic and plastic properties at room temperature, will melt into a viscous fluid temperature, by injection molding machine (such as extrusion, injection, calendering, etc.), without post treatment such as kneading and curing process, may be energy saving, recyclable product and which can be discarded after natural decomposition, compared with the general general plastics (PVC) materials are environmentally friendly.  TPU是加热可塑化、溶剂可溶解的聚氨酯弹性体，它具有各种优异的性能。  TPU is heat plasticization, solvent-soluble polyurethane elastomer, which has various excellent properties. 其具有优异的韧性，耐磨耗及撕裂性，良好的透气性质也极适合于化学品、油品容器。 Which has excellent toughness, abrasion and tear resistance, good permeability properties are also very suitable for the chemical, oil containers. TPU应用范围广泛，用量持续增长，但由于聚合物本身的特殊性，原料的配比精确度、混合的均匀性以及生产过程中的温度控制都会影响TPU的产品的物理性能，从而产生质量波动，这种质量波动会给下游客户的使用带来不利影响。 TPU wide range of applications, the amount of continued growth, but the special nature of the polymer itself, the accuracy of the ratio of the raw materials, the mixing temperature uniformity and control of the production process will affect the physical properties of the TPU products, resulting in fluctuations in the quality, adverse effects of such fluctuations in the quality of downstream customers will use. 对于TPU来说，下游客户主要是抽丝、拉膜、注塑，由于质量波动，会给下游客户带来生产不稳定、拉膜不均匀、抽丝易断、注塑物件强度不稳定等问题。 For TPU, the downstream customers are spinning, film, injection molding, since the fluctuations in the quality, the downstream customers will unstable production, film unevenness, spinning frangible, plastic articles intensity instability problems. 另外，现在许多产业需要复合型TPU，因此，TPU厂家需要生产改性TPU。 In addition, many industries now require complex TPU, therefore, TPU manufacturers need to produce modified TPU.  对于TPU的生产来说，传统TPU造粒一般分为两步，第一步首先将BDO (二羟基丁烷)、聚酯多元醇以及纯MDI ( 二苯甲烷二异氰酸酯)加热至一定温度，再按一定比例混合反应，然后通过托盘或者其他模具成型成块状。  For the production of the TPU, the TPU traditional granulation is generally divided into two steps, the first step is BDO (dihydroxy butane), polyester polyols and pure MDI (diphenylmethane diisocyanate) was heated to a certain temperature, then a certain proportion of the reaction mixture, and then formed into a block by the pallet or other mold. 第二步是经一定时间温度熟化后经破碎机破碎成小块状再通过挤出机造粒成型即可。 The second step is the aging temperature after a certain time crusher crushing machine into small pieces and then granulated by an extruder can be molded. 但是通过托盘或者其他模具成型成料块污染大，生产效率低，能耗高，环境污染严重，成本高。 However, by molding into a tray or other ingot mold pollution, low productivity, high energy consumption, environmental pollution, high costs. 最佳的方法是一步法用双螺杆挤出机生产TPU。 The one-step method is preferred extruder is a twin-screw TPU production.  对于一步法制得的TPU，基本上是属于一种嵌段线型聚合物，采用双螺杆挤出机连续合成TPU，其工艺步骤是由原料预备、计量输送、混合反应、挤出造粒四个部分组成。  For step method were TPU, it belongs to a substantially linear polymer block, using a twin screw extruder continuous synthesis TPU, which is a raw material preparation step process, the metering conveyor, the reaction mixture, making extrusion tablets four parts. 该工艺具有原料配比计量精确、混合均匀、反应温度均一及物料在机内停留时间均匀等特点。 This process has a ratio of raw materials accurate metering, mixing uniformly, the reaction temperature is uniform and uniform residence time of the material in the machine and so on. 但工艺流程中，对原料水分的控制、计量的精度、输送、温度分布以及切粒技术都不可忽视。 But the process, the control of the feed water, the accuracy of measurement, transport, distribution and temperature pelletizing technology can not be ignored. 根据需要，通过配方的调整，可设计出具有合适性能指标的TPU产品。 If necessary, by adjusting the formulation can be designed TPU products with appropriate performance indicators. 因此，在TPU生产过程中，原料成分的配比、混合的均匀性、反应温度的控制都是及其重要的部分，但是，现在的TPU—步造粒系统均存在原料手工配比计量不精确、混合不均匀、反应温度不可控制等问题，而且传统的二步造粒系统一方面由于需要两步制造从而存在加工工艺制备流程长、能耗高的问题，另一方面能耗高造成了环境污染严重、成本高的问题，因此，为了产出符合市场需求的TPU产品，急需开发出一种原料配比精确、混合均匀、反应温度可控且制备流程简单、成本低、能耗低、降低环境污染的TPU —步法造粒系统。 Thus, the production process in the TPU, the ratio, homogeneous mixing, the reaction temperature and the starting material is an important component part, however, the present system exist in the granulation step TPU- manual feed ratio measurement inaccuracies , uneven mixing, the reaction temperature can not be controlled and so on, but the conventional two-step two-step pelletizing system on the one hand due to the need of manufacturing process so that there is prepared a long process, the problem of high energy consumption, high energy consumption, on the other hand causes environmental pollution, high cost, and therefore, the output TPU products to meet market demand, an urgent need to develop a precise ratio of raw materials, mixing, and the reaction temperature controlled preparation process is simple, low cost, low energy consumption, reduced environmental pollution TPU - footwork granulation system. 发明内容 本发明的目的在于提供一种原料配比计量精确、混合均匀、反应温度可控且不使用托盘或其他模具、制备流程简单、成本低、能耗低、无污染的热塑性聚氨酯弹性体生产装置。 SUMMARY OF THE INVENTION  The object of the present invention is to provide an accurate measurement ratio of raw materials, mixing uniformly, the reaction temperature can be controlled without using a tray mold or other preparation process is simple, low cost, low energy consumption, pollution-free thermoplastic polyurethane elastomer production apparatus.  —种热塑性聚氨酯弹性体生产装置，包括:双螺杆挤出机，与所述双螺杆挤出机后端连接的水中造粒机，与所述水中造粒机连接的脱水机，与所述脱水机连接的下部设有卸料口的振动筛，设置于所述振动筛下方的包装机，与所述包装机连接的料仓，其特征在于: 所述双螺杆挤出机前端直接连有三个液料罐，所述液料罐上部设置有控制原料供给量的原料计量部件，所述双螺杆挤出机的前部设置有可以使液料充分反应的至少十二个相互独立的原料连续反应工位，原料分别依次进入到所述的至少十二个相互独立的原料连续反应工位。  - thermoplastic polyurethane elastomer production apparatus, comprising: a twin-screw extruder, a twin-screw extruder with granulator water machine connected to the rear end, is connected to the dryer granulator water, and connected to a lower portion of the dryer is provided with the discharge opening vibrating screen, vibrating screen provided on the bottom of the packaging machine, the packaging machine is connected to the hopper, wherein: said distal twin-screw extruder directly even three liquid feed tank, the upper tank is provided with a liquid feed amount of the raw material supply control metering member, the front portion of the twin-screw extruder provided with a liquid material can be fully reacted at least twelve independent continuous reaction feed stations, each feed sequentially into said at least twelve independent continuous reaction feed station.  优选的，所述三个液料罐为多元醇料罐、多异氰酸酯料罐和丁二醇料罐。  Preferably, the three liquid material tank polyol feed tank, the polyisocyanate feed tank and feed tank butanediol.  优选的，所述三个液料罐的原料计量部件设置有计量泵，与所述计量泵相连并控制其流量的质量流量计，以及与所述质量流量计相连并控制其流量的伺服调速器；所述伺服调速器、质量流量计和计量泵由电脑自动控制。  Preferably, the three liquid raw material tank is provided with a metering pump metering member, connected to the metering pump and control the flow of the mass flow meter, and is connected with the mass flowmeter and the flow of control servo governor; said servo governor, mass flow meters and metering pumps controlled by the computer automatically.  优选的，所述TPU造粒系统还包括与双螺杆挤出机中后段连接的单螺杆造粒机， 所述单螺杆造粒机设置有与其相连的粉体电子计量称。  Preferably, the system further comprises a single TPU granulating screw granulator twin screw extruder connected to the posterior segment of the single-screw granulator provided with a powder metering electronics connected thereto, he said.  优选的，所述水中造粒机与所述脱水机以及所述包装机与所述料仓之间通过料粒输送管道相连接。  Preferably, the pellets are connected by the pipeline between the water and the dehydration granulator and the packaging machine with the magazine.  一种利用上述热塑性聚氨酯弹性体生产装置进行造粒的TPU造粒方法，其包括以下步骤: 1、将多元醇、多异氰酸酯和丁二醇分别注入相应的多元醇料罐、多异氰酸酯料罐和丁二醇料罐； 2、在电脑中设置各原料的比例，利用每个液料罐的原料计量部件的各自伺服调速器控制相应的质量流量计控制原料的流量，从而控制各自计量泵的输出流量，从而改变不同的混合指数； 3、各自计量单位的质量流量计分别对三个组份流量参数及混合比参数进行检测、 校正以实现组份流量的调节和控制； 4、计量完成后的三份原料组份在一定反应温度下在相互独立的至少十二个原料连续反应工位中依次连续混合反应； 5、双螺杆挤出机对组合好的原料进行挤出后，经水中造粒机造粒； 6、双螺杆挤出机挤出的聚合物通过单螺杆造粒机增加性  A TPU granulation method for granulating thermoplastic polyurethane elastomer using the production apparatus, comprising the steps of:  1, polyol, polyisocyanate and butanediol were injected into the corresponding polyol feed tank , the polyisocyanate feed tank and feed tank butanediol;  2, disposed in the computer of the raw materials the ratio by each governor servo feed liquid metering means each corresponding bucket control mass flow control feed flow, thereby controlling the respective metering pump output flow to vary different mixing indices;  3, each unit of measure mass flow meter are three components of the flow parameters and the mixing ratio of detected parameters, to achieve a set of correction parts flow regulation and control;  4, the three raw material components after completion of the measurement at certain parts of the reaction temperature in the reaction mixture successively at least twelve independent feed station in a continuous reactor;  5, after the twin-screw extruder good raw material composition was extruded, pelletized by a pelletizer water;  6, a twin-screw extruder is a single screw granulator polymer of increased 参数或添加相应原料以获得复合型TPU ； 7、造粒完成的TPU通过料粒输送管道进入脱水机进行脱水，通过料粒输送管道进入振动箱干燥，并进入包装机包装，包装完成后进入料仓。 Or add parameters to obtain the corresponding starting compound TPU;  7, the completed granulated by TPU pellets into the pipeline dewatered, pellets through the feed line into the vibration box drying, and packaging into the machine, the packaging is completed after entering the silo.  本发明的有益效果有:[0021 ] 1、由于采用双螺杆挤出机一步造粒，降低了成本，减少了能耗。  Advantageous effects of the invention are:  1, the use of a twin screw extruder granulation step, reducing costs, reducing power consumption.  2、利用电脑控制，通过每个液料罐的各自的原料计量部件的质量流量计分别对三个组份流量参数及混合比参数进行检测、校正以实现组份流量的调节和控制，提高了原料配比的计量精确度。  2, using computer control, the flowmeter components, respectively three traffic parameters and mixing parameters detected by the mass ratio of the respective raw material tanks for each liquid metering means, ingredients to achieve correct adjustment and control of the flow and improve the measurement accuracy of the ratio of raw materials.  3、至少十二个原料连续反应工位的设置，增加了原料的反应时间，可以使原料充分混合反应。  3, at least twelve consecutive reaction feed station is provided, increases the reaction time of the feedstock, the feedstock may be well-mixed reactor.  4、不使用模具、托盘造粒不仅减少了环境污染，而且减少了TPU造粒机的占地面积，提高了工厂的整体使用率，且降低了工人的劳动强度，能为工厂带来更大的经济效益。  4, without using a mold, the tray granulated not only reduce environmental pollution, and reducing the footprint TPU granulator, improving the overall plant utilization, and reduces the labor intensity, energy band for the plant to greater economic benefits.  5、通过单螺杆配合双螺杆挤出机，提高了TPU的性能稳定性并且更容易加工复合性TPU。  5, a single screw extruder with a twin screw, to improve the performance stability of the TPU and TPU MULTIPLE more easily processed. 附图说明 图1为本发明的工艺流程示意图； 图2为本发明的另一实施例的工艺流程图； 图3为本发明液料罐中原料计量部件放大示意图； 如图中坐标系所示，X轴正方向为上方或上部，Y轴正方向为右方或右部，Z轴正方向为前方或前部，同样的，X轴、Y轴和Z轴的反方向对应的为下方或下部、左方或左部和后方或后部。 Flow chart BRIEF DESCRIPTION  FIG. 1 of the present invention; process flow diagram of another embodiment of the  embodiment of the present invention. FIG. 2; the liquid feed tank feed metering member amplified  FIG. 3 is an a schematic view;  the coordinate system shown in FIG., X axis positive direction is upward or upper, Y-axis positive direction is the right direction or a right section, Z-axis positive direction is the forward or front portion of the same, X-axis, Y reverse direction and Z-axis corresponding to the bottom or lower portion, or the left portion and the rear left or rear. 具体实施方式 热塑性聚氨酯弹性体生产装置，包括:双螺杆挤出机1，设置在双螺杆挤出机I后端部并通过料粒输送管道100与双螺杆挤出机I连接的水中造粒机2，与水中造粒机2连接的脱水机3，与脱水机3通过料粒输送管道100连接的下部设有卸料口的振动筛4，设置在振动筛4下方的包装机5，与包装机5通过料粒输送管道100连接的料仓6，双螺杆挤出机I前端直接连有三个液料罐71、72、73，所述液料罐上部设置有控制原料反应量的原料计量部件70，双螺杆挤出机I的前部设置有可以使液料充分反应的相互独立的至少十二个原料连续反应工位10，原料分别依次进入到至少十二个原料连续反应工位10。 DETAILED DESCRIPTION  Thermoplastic polyurethane elastomer production apparatus, comprising: a twin-screw extruder 1, is provided in the water twin-screw extruder I and rear portions by the conveying piping 100 with pellets twin screw extruder connected to I granulating machine 2, and dehydrator water pelletizer connection 3 2, 3 and the dryer duct 100 connected to a lower portion of the conveying pellets through a vibrating screen provided with discharge opening 4 is provided below the vibrating screen 4 of the packaging machine 5 , 5 pellets of the packaging machine 100 bin piped connection 6, the front end of a twin screw extruder I was directly connected to the three feed tank 71, 72, the upper portion of the liquid feed tank is provided with a feed quantity control of the reaction feed metering member 70, the front portion of the twin-screw extruder I provided that the liquid material can be sufficiently independent of the reaction of at least twelve consecutive reaction feed station 10, each in turn feed into at least twelve consecutive reaction feed station bit 10.  优选的，三个液料罐为多元醇料罐71、多异氰酸酯料罐72和丁二醇料罐73。  Preferably, the three liquid material tank 71 to feed tank polyol, polyisocyanate and glycol feed tank 72 feed tank 73.  优选的，所述三个液料罐的原料计量部件70设置有计量泵701，与计量泵701相连并控制其流量的质量流量计702，以及与质量流量计702相连并控制其流量的伺服调速器703 ;伺服调速器701、质量流量计702、计量泵703由电脑自动控制。  Preferably, the three feed liquid material tank 70 is provided with a metering member metering pump 701, is connected to the metering pump 701 and control the mass flow rate meter 702, and a mass flow meter 702 is connected to and controlled speed servo 703; 701 servo speed, mass flow meter 702, metering pump 703 by the computer control.  优选的，热塑性聚氨酯弹性体生产装置还包括与双螺杆挤出机I中后段连接的单螺杆造粒机8，单螺杆造粒机8设置有与其相连的粉体电子计量称80。  Preferably, the thermoplastic polyurethane elastomer production means further comprises a double-screw extruder with a single screw granulator dryer section I after the connection 8, a single screw granulator 8 is provided with a powder metering electronics 80 connected thereto, said .  优选的，水中造粒机2与脱水机3，脱水机3与振动筛4，包装机5与料仓6之间通过料粒输送管道100相连接。  Preferably, the water granulator dryer 2 and 3, 3 and the shaker dryer 4, the packaging machine 5 and 6 between the bin by conveying pipe is connected to the pellets 100.  利用上述热塑性聚氨酯弹性体生产装置的TPU造粒方法，其包括以下步骤: 1、将多元醇、多异氰酸酯和丁二醇分别注入对应的多元醇料罐71、多异氰酸酯料罐72和丁二醇料罐73。  The use of the thermoplastic polyurethane elastomer production facility TPU granulation process, comprising the steps of:  1, polyol, polyisocyanate and butanediol were injected into the corresponding polyol feed tank 71, the polyisocyanate material tank 72 feed tank 73 and butanediol.  2、在电脑中设置各原料的比例，优选的，多元醇、多异氰酸酯和丁二醇各组分的用量分别为100份、35-50份和8-13份(每份的单位相同)，例如三原料用量份比可以设置为100: 35: 8，利用每个液料罐的原料计量部件70的各自伺服调速器701控制相应的质量流量计702控制原料的流量，从而控制各自计量泵703的输出流量，从而改变混合指数至在电脑中设定的比例，达到多元醇、多异氰酸酯和丁二醇用量份比例为100: 35: 8。  2, disposed in the computer of the raw materials the ratio of, preferably, a polyol, a polyisocyanate and a glycol ester of the components are used in an amount of 100 parts, 8-13, and 35-50 parts parts (per unit the same), for example, three parts by an amount ratio of the raw material can be set to 100: 35: 8, with each feed liquid material tank 70 of the metering member 701 control respective servo governor corresponding mass flow meter 702 controls the flow of raw materials to control each output flow metering pump 703, thereby changing the mixing ratio of the index to set in the computer, to achieve a polyol, a polyisocyanate and a glycol ratio of the amount of 100 parts: 35: 8.  3、各自计量单位的质量流量计702分别对三个组份流量参数及混合比参数进行检测、校正以实现组份流量的调节和控制，以达到用量精准的目的。  3, each unit of measure mass flow meter 702, respectively, of the three components and the flow parameters of the mixing ratio detection parameters, in order to achieve correct adjustment and control component of the flow, in order to achieve the purpose of precise amounts.  在另一个实施例中也可以在电脑中将多元醇、多异氰酸酯和丁二醇比例设置为100: 50: 13，以得到其他性能的TPU，同样的，利用每个液料罐的原料计量部件70的各自伺服调速器701控制相应的质量流量计702控制原料的流量，从而控制各自计量泵703的输出流量，从而改变混合指数至在电脑中设定的比例，达到多元醇、多异氰酸酯和丁二醇用量比例为100: 50: 13。  In embodiments a polyol may be in the computer, the proportion of polyisocyanate and glycol esters in a further embodiment is set to 100: 50: TPU 13, to obtain other properties, the same, with each of the liquid material tank feed metering member 701 are each servo speed control 70 corresponding to a mass flow meter 702 controls the flow of raw materials to control the respective output flow metering pump 703, thereby changing the mixing ratio of the index to set in the computer, to the polyol, polycyanate and an amount ratio of iso-butylene was 100: 50: 13.  4、计量完成后的三份原料组份在一定反应温度下在至少十二个原料连续反应工位10中混合反应。  4, the three raw material components after completion of the measurement at certain parts of the reaction mixture at a reaction temperature of at least twelve continuous reaction feed station 10.  5、双螺杆挤出机I对组合好的原料进行挤出后，经水中造粒机2造粒。  5, twin-screw extruder I for the good raw material composition was extruded, pelletized by pelletizer 2 in water.  6、双螺杆挤出机I挤出的聚合物通过单螺杆造粒机8增加性能参数或添加相应原料以获得复合型TPU。  6, a twin-screw extruder, extruded polymer I granulator 8 through a single screw or adding increased performance parameter corresponding starting compound to obtain a TPU.  7、造粒完成的TPU通过料粒输送管道进入脱水机3进行脱水，通过料粒输送管道进入振动筛4干燥，并进入包装机5包装，包装完成后进入料仓6。  7, the completed granulated TPU pellets by pipeline 3 into the dewatering machine dehydrated pellets through delivery conduit 4 into a drying shaker, and package into the machine 5, after completion of packaging entering the silo 6.  在生产过程中，通过将原料置于双螺杆挤出机I中进行高温反应聚合，双螺杆挤出机I相对运动的两个螺杆具有高剪切速度梯度可使物料良好混合反应均匀。  In the production process, high temperature polymerization reaction extruder I was placed in the feedstock by a twin-screw, twin-screw extruder, both screws relative movement I have a high shear rate gradient material can be made uniform well-mixed reaction . 双螺杆挤出机I的前端设有至少十二个原料连续反应工位10，计量完成的原料在一定温度下在至少十二个原料连续反应工位10中充分聚合反应。 I distal twin-screw extruder provided with at least twelve consecutive reaction feed station 10, to complete the measurement of the raw material at a temperature continuous reaction station 10 at least twelve full polymerization feedstock.  作为一种优选，双螺杆挤出机I连接的液料罐71、72、73处还设有原料计量部件70,该原料计量部件70包括伺服调速器701、质量流量计702和计量泵703。  As a preference, the liquid feed tank 71, 72 twin-screw extruder provided with a raw material is also connected to I metering member 70, the member 70 comprises a feed metering servo speed control 701, and a mass flow meter 702 metering pump 703. 伺服调速器701、质量流量计702和计量泵703的工作由计算机控制，通过在电脑中设置多元醇、多异氰酸酯和丁二醇的比例，利用每个料灌的原料计量部件70的伺服调速器701控制各个计量部件的质量流量计702的流量，通过质量流量计702控制各自相应的计量泵703的输出流量， 从而改变不同的混合指数，制造出不同性能、不同用处的TPU。 Servo speed 701, mass flow meter 702 and the metering pump 703, is provided by the polyol in the computer controlled by a computer, the proportion of the polyisocyanate and the glycol, using each raw material filling the metering servo adjustment member 70 speed 701 controls the respective mass flow meter metering member 702, flow meter 702 is controlled by the mass flow rate of a respective output corresponding metering pumps 703, thereby changing the different mixing indices, producing different properties, different useful TPU.  各自原料计量单位70的质量流量计702分别对多元醇、多异氰酸酯和丁二醇三个组份流量参数及混合比参数进行检测、校正以实现组份流量的调节和控制。  The quality measurement unit 70 of each feed flow meter 702, respectively, polyol, polyisocyanate and the three components flow parameters butanediol and mixing ratio detecting parameters, in order to achieve correct adjustment and control of the flow components. 从而实现并控制双螺杆挤出机的物料的精确配比。 And enabling precise control of the ratio of the material of the twin-screw extruder. 优选的，其控制方式分为可开环控制和闭环控制两种方式。 Preferably, the control mode is classified into open-loop control and closed-loop control in two ways.  作为一种优选，该TPU造粒系统还设置有单螺杆造粒机8，该单螺杆造粒机8前端设置有粉体电子计量称80，当原料在双螺杆挤出机I中的至少十二个原料连续反应工位中混合反应后，并通过双螺杆挤出机挤出后，可通过在单螺杆造粒机中反应以提闻广品性能， 或通过直接添加复合材料以达到制造复合TPU的需要。  As a preference, the system is further provided with a TPU granulating single screw granulator 8, the single screw granulator 8 is provided with a front end 80, said electronic metering the powder, when the raw material extruded in a twin screw extruder I, after the reaction of at least twelve consecutive feed station in the reaction mixture, and extruding through a twin screw extruder, a single screw can be obtained by reaction of a pelletizer to provide a wide product performance smell, or by adding directly to the composite material the need to achieve the manufacture of composite TPU.  由于采用双螺杆挤出机一步造粒，降低了成本，减少了能耗。  Since the double-screw extruder granulation step, reducing costs, reducing power consumption. 各自计量单位的质量流量计702分别对三个组份流量参数及混合比参数进行检测、校正以实现组份流量的调节和控制，提高了原料配比的计量精确度。 Mass flow meter 702 respective measurement units respectively three components flow parameters and to detect the mixing ratio parameter, correction to achieve the adjusting and controlling the flow rate of component, ratio of raw materials improves the accuracy of measurement. 双螺杆挤出机I前端设置至少十二个原料连续反应工位10，可以使原料在双螺杆挤出机I中充分反应，以得到性能优良的TPU。 Twin-screw extruder I distal end disposed at least twelve consecutive reaction feed station 10, the raw material can be sufficiently reacted in a twin-screw extruder I, to give excellent performance TPU. 不使用模具、托盘造粒不仅减少了环境污染，而且减少了TPU造粒机的占地面积，提高了工厂的整体使用率，且降低了工人的劳动强度，能为工厂带来更大的经济效益。 Without using a mold, tray granulation not only reduce environmental pollution, and reducing the footprint TPU granulator and improve the overall factory utilization, and reduce labor intensity, can bring greater economic factory benefit. 通过单螺杆造粒机8配合双螺杆挤出机1，提高了TPU的性能稳定性并且更容易加工复合性TPU。 8 through a single screw granulator with a twin-screw extruder, improving the performance and stability of the TPU TPU MULTIPLE more easily processed.  本领域技术人员可以根据本发明公开的内容和所掌握的本领域技术对本发明内容做出替换或变型，但是这些替换或变型都不应视为脱离本发明构思的，这些替换或变型均在本发明要求保护的权利范围内。  Those skilled in the art may be made in accordance with the present disclosure and those skilled in the disposal of the present invention is replacement or modification, but these substitutions or modifications shall be construed as departing from the inventive concept, such substitutions or modifications They are within the scope of the claimed invention as claimed.