一种高精度添加剂计量螺旋机技术领域 本发明涉及一种干混砂浆搅拌站添加剂计量螺旋机，尤其涉及一种高精度添加剂计量螺旋机。 A high precision metering screw additive TECHNICAL FIELD  The present invention relates to a dry mortar mixing station additive metering screw machine, particularly to a high accuracy additive metering screw machine. 背景技术 在干混砂浆搅拌站行业，虽然添加剂在成品砂浆中所占的比例较小，但是对其成品砂浆的性能影响却很大，而且添加剂的成本比较高，所以要求添加剂的计量精度就高，对于特种砂浆，计量精度要求就更高了。  In the dry mortar mixing station sector, although the additive in the finished mortar small proportion, but its impact properties of the finished large mortar, and the relatively high cost of the additive, the additive metering requirements accuracy is high, for special mortar, measurement accuracy even higher. 目前，采用的添加剂计量螺旋机其计量精度只能达到1%，配上变频电机，也只能达到O. 5%左右，所以成品砂浆的性能并不十分稳定。 Currently, the use of the additive metering screw machine which can achieve measurement accuracy of 1%, coupled inverter motor, O. can only reach about 5%, so the properties of the finished mortar is not very stable. 发明内容 为克服现有技术的不足，本发明的目的是提供一种高精度添加剂计量螺旋机，提高计量精度，使成品砂浆性能稳定。 SUMMARY  invention is to overcome the disadvantages of the prior art, an object of the present invention is to provide an additive metering precision screw machine, to improve the measurement accuracy, the finished mortar so that stable performance.  为实现上述目的，本发明通过以下技术方案实现： 一种高精度添加剂计量螺旋机，包括螺旋机，在螺旋机进料口部位的螺旋轴上设有刀体，在螺旋机接近出料口部位的螺旋轴上设置搅拌杆；所述刀体的回转直径DN2大于螺旋叶片直径DNl的2倍；所述的搅拌杆回转直径DN3大于螺旋叶片直径DN1，小于螺旋管内径。  To achieve the above object, the present invention is achieved by the following technical solution:  A high precision additive metering screw machine, comprising a screw machine, the cutter body is provided with a helical screw shaft portion of the inlet of, the spiral machine close the discharge port of the screw shaft portion of the stirring rod set; turning DN2 diameter of the blade body is greater than 2 times the diameter of the spiral blade DNl; said stirring rod spiral blade swing diameter larger than the diameter DN3 DN1, smaller than the inner diameter of the coil.  所述的刀体为八个，沿螺旋叶片的反螺旋线方向在四个螺距内分布。  The cutter body is eight, the anti-helix direction of the helical blade is distributed within the four pitch.  所述的刀体为L形结构。 The  blade is L-shaped structure.  所述的搅拌杆分为两组，每组四个搅拌杆，均匀分布在螺旋轴的横截面内，两组搅拌杆轴向间距在1/2〜1/4螺距之间，两组搅拌杆在轴向投影互相交叉成45度角。  The stirring rod is divided into two groups of four stirring rods, distributed uniformly over the cross section of the screw shaft, two axial distance between the stirring rod 1 / 2~1 / 4 pitch, two of agitator bars intersect with each other in an axial projection angle of 45 °.  与现有技术相比，本发明的有益效果是： 利用螺旋机进料口的刀体及出料口的搅拌杆，使其螺旋机的进料、出料均匀，减小对计量称的冲击，从而使添加剂的计量精度有了很大的提高，成品砂浆的性能稳定性得到改善。  Compared with the prior art, the beneficial effects of the present invention are:  the inlet of the coil of the blade and the discharge port of the stirring rod, so that feed screw machine, a uniform discharge, Save small said the impact on the measurement, so that the measurement accuracy of the additive has been greatly improved, the performance stability of the finished mortar improved. 附图说明 图1是本发明的结构示意图。 BRIEF DESCRIPTION  FIG. 1 is a structural diagram of the present invention.  图2是本发明的局部放大图。  FIG. 2 is a partially enlarged view of the invention.  图3是图1的局部剖视图。  FIG. 3 is a partial cross-sectional view of FIG.  图4是图1的局部剖视图。  FIG. 4 is a partial cross-sectional view of FIG.  图5是图1的局部剖视图。  FIG. 5 is a partial cross-sectional view of FIG.  图中：1-计量称2-螺旋机3-刀体4-进料口5-添加剂仓6_搅拌杆7_螺旋管8-螺旋叶片9-螺旋轴。  REFERENCE NUMERALS 1: 2- screw machine, said metering blade 4- 3- 5- additive cartridge feed port 6_ 7_ stirring rod spiral 8- 9- spiral blade screw shaft. 具体实施方式 下面结合说明书附图对本发明进行详细地描述，但是应该指出本发明的实施不限于以下的实施方式。 DETAILED DESCRIPTION  the following description in conjunction with the accompanying drawings of the present invention will be described in detail, it should be noted that embodiments of the present invention is not limited to the following embodiments.  见图1-图5，一种高精度添加剂计量螺旋机，包括螺旋机2，在螺旋机2进料口4 部位的螺旋轴9上设有刀体，在螺旋机2接近出料口部位的螺旋轴9上设置搅拌杆6 ;所述刀体3的回转直径DN2大于螺旋叶片8直径DNl的2倍，圆周速度较快，可打散进料口4内部的易成团的添加剂物料，使其均匀的给螺旋机2供料；所述的搅拌杆6回转直径DN3大于螺旋叶片8直径DNl，小于螺旋管7内径，搅拌杆6可使将螺旋叶片8送到出料口附近的物料搅拌松散，出料均匀，减小对计量称I的冲击。  Figure 1 - Figure 5, a high-precision additive metering screw machine, comprising a screw machine 2, the blade body is provided on the screw shaft screw conveyor 2 of the inlet portion 4 9, in the discharge screw conveyor 2 approaches the screw shaft is provided on the opening portion 9 of the stirring rod 6; additive turning the blade body is greater than the diameter of the spiral blade DN2 3 2 times the diameter DNl 8, the peripheral speed, can be broken up into the interior of spout 4 easily agglomerated material, to uniformly feed screw conveyor 2; the diameter of the stirring rotary shaft 6 is greater than the helical blade 8 DN3 DNl diameter, smaller than the inner diameter of the coil 7, the lever 6 allows the helical stirring blade 8 to the vicinity of the discharge port the contents were stirred loose, uniform material, reducing the impact on the measurement of said I.  所述的刀体3为八个，沿螺旋叶片8的反螺旋线方向在四个螺距内均匀分布。  The cutter body 3 is eight, in a reverse spiral direction of the spiral blade 8 is evenly distributed in the four pitch.  所述的刀体3为L形结构。 Blade body  3 according to an L-shaped configuration. [0021 ] 所述的搅拌杆6分为两组，每组四个搅拌杆6，均匀分布在螺旋轴9的横截面内，两组搅拌杆6轴向间距在1/2〜1/4螺距之间，两组搅拌杆6在轴向投影互相交叉成45度角。  The stirring shaft 6 is divided into two groups, each group of four rods 6 was stirred uniformly distributed in a cross-section of the screw shaft 9, two stirring bar 6 axial distance of 1 / 2~1 / 4 pitch between the two stirring rods 6 cross each other at an angle of 45 degrees axial projection.  使用时，物料从添加剂仓5经过螺旋机2进料口4时，易成团的添加剂物料首先被刀体3打散，然后均匀给螺旋机2供料；在螺旋机2的接近出料口，两组搅拌杆6将螺旋叶片送到出料口附近的添加剂物料搅拌的松散一些，使其出料均匀，对计量称I的冲击更小一些。  When used, the additive material when the cartridge 5 through the screw conveyor 2 from the inlet 4, the additive material easily agglomerated cutter body 3 is first broken, then uniformly fed to the screw conveyor 2; 2 close to the screw conveyor discharge port, two stirring blade lever 6 to the spirally some additives bulk material discharge opening close to a stirred, so that a uniform discharge of said metered I shock smaller. 本发明再配备变频电机，通过搅拌站控制中心的PLC，根据进入计量称I的外加剂量， 对螺旋机2进行变频控制，随着进入计量称I外加剂重量比例的增加，螺旋机2的电机转速下降，当计量称I达到设定值时，螺旋机2的电机停止，完成一个周期的配料，可以实现添加剂计量精度达到O. 2%，绝对精度可以达到20g，从而使成品砂浆的性能稳定性得到很大的改善。 The present invention is further equipped with a variable frequency motor control center by mixing station PLC, said admixture according to the amount of I into the metering of screw conveyor 2 controlled using an inverter, as said metered into the admixture to increase the weight ratio of I, screw machine motor 2 speed decreases when said measurement reaches a predetermined value I, the motor screw conveyor 2 is stopped, the completion of one cycle of the ingredients, the additive may be implemented to achieve the measurement accuracy O. 2%, absolute accuracy can reach 20g, so that the stability properties of the finished mortar of greatly improved.  本发明利用螺旋机进料口的刀体及出料口的搅拌杆，使其螺旋机的进料、出料均匀，减小对计量称的冲击，从而使添加剂的计量精度有了很大的提高，成品砂浆的性能稳定性得到改善。  The present invention utilizes the inlet of the spiral blade and the discharge port of the stirring rod, so that feed screw machine, the material uniformly, to reduce the impact of said measurement so that the measurement accuracy of the additive has greatly improved, performance is improved stability of the finished mortar.