用于液体喂料的失重式喂料机技术领域本发明涉及喂料装置，特别涉及一种用于液体喂料的失重式喂料机。 BACKGROUND weight loss feeders for feeding a liquid feed apparatus of the present invention relates, in particular, relates to a weight loss feeders for feeding the liquid. 背景技术随着橡塑行业在国内的迅速发展，国外越来越多的失重式计量喂料配混设备进入国内市场。 BACKGROUND With the rapid development of rubber industry in the country, more and more foreign weightlessness metering feeder compounding equipment into the domestic market. 但是进口机器的价格相当贵，国内的大多数中、小型企业都无法承受。 But the import price of the machine is quite expensive, most domestic small and medium enterprises can not afford. 国内的用于液体喂料的失重式喂料机还是一个空白。 Domestic weight loss feeders for liquid feed or a blank. 在喂料机使用于化工，医药，食品等领域时，液体物料遇到空气会反映变质，或遇到空气中的水分发生反应或结晶。 When feeder used in chemical, pharmaceutical, food and other fields, a liquid material meets the air reflected deterioration, or the reaction encounters moisture in the air or crystallization occurred. 现有喂料机产品无法确保物料的物理和化学性质，缺少防止物料挥发的封闭结构。 Existing products can not be guaranteed feeder physical and chemical properties of materials, lack of structure to prevent the closure of the volatile materials. 因此用于液体喂料的情况下，其安全可靠性有待改善。 Thus the case of a liquid feed, the safety and reliability to be improved. 在喂料机使用于固体喂料时，现有的单/双螺杆喂料机的料斗采用底部为半球形的球斗， 由于其底部开口相对较小，使物料输送不够顺畅，也不利于进行搅拌。 When using a solid feeder feeding hopper existing single / twin screw feeder using a hemispherical ball hopper bottom, the bottom opening because of its relatively small, so that material transport is not smooth, it is not conducive to stir. 因此用于固体喂料的情况下，其结构有待改善。 Thus the case of a solid feed, the structure could be improved. 发明内容本发明的目的在于克服上述弊端，提供一种计量精度高、操作安全可靠、确保防止液体物料挥发和固体物料输送顺畅的失重式喂料机。 Object of the present invention is to overcome the above drawbacks, providing a measure of high precision, safe and reliable operation, and to ensure the prevention of volatile liquid feed solid material smooth delivery of weight loss feeders. 本发明一种用于液体喂料的失重式喂料机，包括依次相连的工控机、PLC模块、变频器、 执行机构和喂料机构，PLC模块接有控制开关，喂料机构设有荷重传感器，荷重传感器的称重信号接至PLC模块，其中喂料机构设有固定在喂料机壳体上的储料仓和称量机构，称量机构包括计量筒和计量外筒，计量筒通过上连接板与荷重传感器相连，计量外筒通过下连接板与荷重传感器相连，计量外筒设有外筒盖，外筒盖与计量外筒之间设有密封垫，称量机构的加料管和出料口分别固定在外筒盖上，加料管与储料仓的出口相通。 LWF machine of the present invention is a method for feeding liquid, comprising successively coupled to the IPC, PLC module, the drive actuator and feeding mechanism, PLC module connected with the control switch, the feeding mechanism is provided with a load sensor , load cell weighing signal is coupled to PLC module, wherein the feeding mechanism has a storage bin and weighing feeder mechanism is fixed to the housing, the weighing mechanism comprises a metering cylinder and the outer cylinder by the metering drum the connecting plate connected to the load sensor, the load sensor is connected to the web, measured at the outer cylinder by the metering cylinder is provided with an outer cover of the outer cylinder, a gasket is provided between the outer cover and the metering cylinder outer tube, feeding tube and the weighing means spout cover respectively fixed to the outer cylinder, the feed pipe outlet in communication with the storage bin. 本发明用于液体喂料的失重式喂料机，其中所述计量筒和计量外筒由不锈钢材料制成。 LWF machine of the present invention for the liquid feed, and wherein said metering cylinder and an outer cylinder made of stainless steel material. 本发明用于液体喂料的失重式喂料机，由于采用了具有荷重传感器的工控机控制系统， 通过工控机的输入设备设定配比参数，由荷重传感器获取称重信号并传递给工控机，工控机通过总线控制方式输出实时调整信号经变频器和执行机构控制喂料并调整配混流量的稳定 LWF machine of the present invention for the feed liquid, the use of industrial control system having a load cell, by setting the ratio of the input device IPC parameter, acquired by the load sensor weighing signal and transmitted to the IPC , by IPC bus output control signal in real time to adjust the drive and control the actuator and adjusting the feed flow rate compounded stable
性。 Sex. 使用者可以用包括触摸屏在内的输入设备与系统沟通，采用PID调节，每时每刻进行比较、计算、速度调节，来保证输送的稳定性和配比的精度。 The user can include a touch screen including an input device to communicate with the system, PID regulator, all the time, and calculates the speed adjustment to ensure the accuracy and stability of delivery ratio. 系统内储有补助软件，并具有工艺流程动作图、配方编辑及存储、报表、工作曲线、生产批号及代码、打印等功能。 Storing the system software has benefits, and having an operation process view and edit the recipe storage, reports, curve, and the production lot code printing. 因此本发明用于液体喂料的失重式喂料机采用的计量配混的方法具有成本低、自动化程度高，具有高精度配比和流量高稳定性的优点；用于液体喂料的失重式喂料机操作安全可靠，可以确保防止液体物料挥发，改善了喂料效果。 Thus compounded measurement method of the present invention, weight loss feeders for feeding the liquid employed has a low cost, high degree of automation, has the advantage of high precision flow rate ratio and stability; a liquid feed loss- safe and reliable feeder operation, the liquid material can be ensured to prevent evaporation, improve the feeding effect. 附图说明下面结合附图对本发明进行进一步的描述。 BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further described in conjunction. 图1是本发明失重式喂料机的方框图；图2a和图2b是本发明失重式喂料机计量配混方法的流程图； 图3是本发明失重式喂料机（用于液体喂料）的主视图； 图4是图3中称量机构结构图；图5是本发明失重式喂料机（用于固体喂料）的结构图；图6是图5中碟斗的主视图；图7是图5中碟斗的侧视图；图8是本发明失重式喂料机的使用操作流程图。 FIG. 1 is a block diagram of the weight loss feeders of the present invention; Figures 2a and 2b of the present invention is a measurement of weight loss feeders flowchart of a method of compounding; FIG. 3 is a weight loss feeders of the present invention (for liquid feeding ) front view; FIG. 3 FIG. 4 is a structural view of the weighing mechanism; FIG. 5 of the present invention is a configuration diagram of weight loss feeders (feeders for solids); Figure 6 is a front view of the bucket of FIG disc 5; FIG. 7 is a side view of the plate bucket 5; FIG. 8 is a flowchart of the operation using weight loss feeders of the present invention. 具体实施方式本发明失重式喂料机采用总线控制方式，使用者通过工控机的输入设备，包括工控机显示器或触摸式平板电脑输入相应的配比参数，包括多组物料的配混比例，可单独输入，也可输入总流量，比例自动分配。 DETAILED DESCRIPTION The present invention LWF machine control bus, user input parameter corresponding to the ratio of IPC through the input device, including a display, or IPC touch tablet, comprising mixing ratio with a plurality of sets of material, may individual input, the input may be the total flow, the ratio is automatically assigned. 同时通过荷重传感器，把信号传递给PLC控制系统，经过软件的程序适时处理，控制系统输出一个适时调整过的信号到变频器，通过马达、计量泵等执行机构来实现流量的稳定性。 By simultaneously load sensor, the signal to the PLC control system, through the timely processing software program, the control system outputs a signal to adjust the drive through, to achieve stability of flow through the actuator motor, metering pumps. 参见图2a和图2b，在本发明失重式喂料机计量配混方法中，系统通电后，通过工控机输入设定的配比参数，包括流量，料位上限，料位下限，补料时间，设定流量修正，同时， 接入荷重传感器信号，系统进行自检。 Referring to FIGS. 2a and 2b, the metering feeder in the loss-compounding process of the present invention, the system is powered, the input set by the IPC ratio parameters, including flow rate, level upper limit, the lower limit of the material level, feeding time setting the flow rate correction, while the access load sensor signal, the system self-test. 打开控制开关，系统启动，按照输入配比参数确定的启动速度运行变频器，以启动速度运行设备。 Open the control switch, system startup, start the operating speed of the input drive ratio in accordance with the determined parameters, to start the operation of the device speed. 运行60秒后，进行数据比较，进入全自动配料控制。 After running for 60 seconds to compare data, into the automatic batching control. 配料控制的过程是：判断料斗里的料是否小于加料界限设定，若结果为是，给出加料界限报警；若结果为否，再判断是否小于料位下限，若结果为是，打开加料阀进行加料；若结果为否，继续判断是否大于料位下限，若结果为否，60秒后给出加料故障报警；若结果为是，判断是否大于料位上限，若结果为是，关闭加料阀停止加料。 Process control ingredients are: determining whether the material in the hopper is less than the limit set addition, if the result is given alarm limits addition; if the result is negative, then determining whether the material is less than the lower limit position, if the result is YES, the feed valve is opened for addition; if the result is negative, determines whether to continue the material is greater than the lower limit position, if the result is NO, the addition after 60 seconds is given fault alarm; if the result is YES, it is determined whether the filling level is greater than the upper limit, if the result is to close the feed valve stop feeding. 系统如果进入PID调节时：若实际流量大于设定流量，PID调节减小速度并输出给变频器；若实际流量小于设定流量，PID调节增加速度并输出给变频器。 If the system enters the PID controller: if the actual flow is greater than the set flow rate, PID regulation and reduce the speed for the inverter; if the actual flow rate is less than the set flow rate, PID regulation for the inverter and increase the speed. 同时，系统判断实际流量与设定流量之差A是否小于一定值且超出允许范围，若结果为是，给出架桥报警；判断实际流量与设定流量之差A的绝对值是否大于一定值且在允许范围内，若结果为是，给出超差报警。 Meanwhile, the system determines the actual flow rate and a set flow rate difference A is smaller than a predetermined value outside the permitted range and, if the result is YES, an alarm is given bridge; determines whether the absolute value of the difference between A the actual flow rate and a set flow rate greater than a certain value within the allowable range and, if the result is given tolerance alarm. 最后，在系统停止时按下控制开关，系统停止运行，设备断电。 Finally, the system is stopped when the control switch is pressed, the system stops operation, the device is powered off. 本发明失重式喂料机计量配混方法中，由于控制系统的采样和通讯速度高，实时读取数据，并对这些数据不停的求和，算出平均数K,用平均数K与相关参数比较并进行料位控制；同时把平均数K与相关参数转换为浮点数并作相应的运算，以供进行PID调节，即采用单位时内物料的流失量进行自动计算调节，从而保证物料输送的稳定性。 Metering LWF compounding method of the present invention, since the control system of sampling and high communication speed, real-time data is read, and the data summing stop, calculate the mean K, with K and related parameters Mean and comparison level control; and K while the average parameters into a floating point operation and accordingly, for the PID regulator, the loss of the amount of material calculated automatically adjusted in unit time i.e., to ensure material transport stability. 系统工控机控制的用于液体喂料的失重式喂料机最多可达32台。 Industrial Computer controlled weight loss feeders for feeding the liquid up to 32 units. 本发明失重式喂料机计量配混方法中，工控机和PLC控制系统沟通，它能提供整个流程的详细资料（输入参数，第一时间内监控对象的变化等），同时系统内储有补助软件，具有工艺流程动作图、配方编辑及存储、报表、工作曲线、生产批号及代码、打印等功能。 Metering LWF compounding method of the present invention, IPC and PLC control system communication, which provides detailed information on the whole process (input parameter, the first time to monitor changes in the object, etc.), while the storage system grants software with process flow chart action, recipe editing and storage, reports, curve, lot number and production code printing. 本发明失重式喂料机计量配混方法中，系统也可以接收外界的模拟信号来控制整条生产线。 Metering LWF compounding method of the present invention, the system may also receive external analog signal to control the entire production line. 釆用上述计量配混方法，本发明用于液体喂料的失重式喂料机的使用操作流程如下：参见图8，设备通电一系统进行自检一打开气源一输入参数一做好开机准备一把原料放入原料料仓一打开上料机给过渡料仓加料一加料到过渡料仓料位上限时一过渡料仓给上料机一个停止信号一上料机停止（在设备运行过程中，过渡料仓的料到设定的下限时一过渡料仓给上料机一个启动信号一上料机启动）一确保所有设备正常用心运行，喂料机准备就绪一打开失重式计量喂料配混设备开关一喂料系统按照设定的参数一直运行一过几秒钟后，系统输出一个补料信号一打开补料阀一从过渡料仓向失重式计量喂料机加料一失重式计量喂料机料位到设定上限时一关闭补料阀（在失重式计量喂料料机运行过程中，失重式计量喂料机料位到设定下限时一系统输出一个补料信号一打 Preclude the use of operational flow using the measuring method of blending, the liquid feeder of the present invention for weight loss feeders as follows: Referring to Figure 8, a system self-test device is energized to open a gas supply a power input parameters a check preparing a raw material into a hopper on the feeder is opened to a transition hopper feed hopper fed transition to a limit on a feeder stop signal on a feeder is stopped (the process equipment running transition hopper material level , the transition silo expect to set the lower limit of a transition hopper to the feeder a start signal a feeder start) a normal carefully to ensure that all equipment is running, open a feeder ready weightlessness metering feeder after compounding a switching device in accordance with the parameters set by feeding system has been running a few seconds, the system outputs a signal fed a feed valve opening the transition from a feed hopper to a loss-in-weight gravimetric feeder a metering weightlessness feeder material level set to limit a closed feed valve (metering feeder weightlessness during feeder operation, the feed loss-in-weight gravimetric feeder at a set position to a limit of a system output signal fed a dozen 开补料阀）一直到停机，所有动作才停止。 Open feed valve) until the shutdown, all the action stopped. 下面结合附图对本发明用于液体喂料的失重式喂料机的实施例1进行说明。 1 illustrates an embodiment of weight loss feeders of the present invention for the liquid feed in conjunction with the accompanying drawings below. 参见图1和图3，该用于液体喂料的失重式喂料机包括依次相连的工控机、PLC模块、变频器、执行机构和喂料机构，PLC模块接有控制开关，喂料机构设有荷重传感器，荷重传感 Referring to FIG. 1 and FIG. 3, the weight loss feeders for feeding the liquid comprises sequentially connected IPC, PLC module, the drive actuator and feeding mechanism, PLC module connected with the control switch, the feeding mechanism is provided there load sensor, the load sensor
器的称重信号接至PLC模块。 The weighing device is coupled to the signal PLC module. 其中，喂料机构设有固定在喂料机壳体上的储料仓30和称量机构37，参见图4，称量机构37包括由不锈钢材料制成的计量筒39和计量外筒38,计量筒39 通过上连接板36与荷重传感器相连，计量外筒38通过下连接板35与荷重传感器相连，计量外筒38设有外筒盖31，外筒盖31与计量外筒38间设有密封垫34，称量机构37的加料管32和出料口33分别固定在外筒盖31上，加料管32与储料仓的出口相通。 Wherein the feeding means is provided fixed to the housing of the feed storage bin 30 and the weighing unit 37, see FIG. 4, the weighing mechanism 37 includes a metering cylinder 39 made of a stainless steel outer cylinder 38 and the metering, metering cylinder 39 connected by a web 36 and on the load sensor, the outer tube 38 is connected to metering load cell through the lower plate 35, the metering cylinder 38 is provided with an outer tubular outer cover 31, outer cover 31 and the metering cylinder 38 has an outer cylinder gasket 34, the weighing mechanism 32 of filler tube 37 and an outlet spout 33 are fixed to the outer cylinder cap 31, feed tube 32 in communication with the storage bin. 该喂料机为使用于化工，医药，食品等各个领域的液体设备。 The feeder is used in various fields of chemical, pharmaceutical, food and other fluid devices. 由于液体大部分遇到空气会反应变质，或遇到空气中的水分分反应或结晶。 Since most of the air will encounter liquid reaction changed, or encounters moisture in the air or fraction crystallization reaction. 因此采用计量筒与计量外筒由传感器间接连接，计量外筒加密封盖，又不影响计量精度的全封闭结构称量机构37，其优点是-1) 确保物料的物理和化学性质，防止物料挥发，防止遇到空气中的水分分反应或结晶。 Thus using the outer cylindrical metering drum with the metering sensor is connected indirectly by a metering lid outer cylinder encryption, without affecting the measurement accuracy of the weighing mechanism 37 fully enclosed structure, the advantage is -1) to ensure that the physical and chemical nature of the materials, to prevent the material volatile, to prevent moisture in the air encountered partial reaction or crystallization. 2) 该机设计先进，结构紧凑,安全可靠，性能优良，外型美观，运转平稳，能耗低，产量高， 使用寿命长，安装维修方便。 2) The aircraft of advanced design, compact, safe and reliable, excellent performance, good looks, smooth operation, low energy consumption, high output, long life, easy installation and maintenance. 3) 采用全不锈钢制造,清料干净彻底。 3) all-stainless steel, thoroughly clean and clear material. 4) 传感器安装考究，在各个部件安装过程中，除去一切影响传感器精度的外界因素，确保传感器的正常运行。 4) a sensor mounted sophisticated, the various components of the installation process, the removal of all external factors affect the accuracy of the sensor, to ensure the normal operation of the sensor. 下面结合附图对本发明用于固体喂料的失重式喂料机的实施例2进行说明。 2 illustrates an embodiment of weight loss feeders of the present invention for feeding solids to the accompanying drawings below. 参见图5，该用于固体喂料的失重式喂料机包括依次相连的工控机、PLC模块、变频器、 执行机构和喂料机构，PLC模块接有控制开关，喂料机构设有荷重传感器，荷重传感器的称重信号接至PLC模块。 Referring to Figure 5, the weight loss feeders for feeding solid comprises sequentially connected IPC, PLC module, the drive actuator and feeding mechanism, PLC module connected with the control switch, the feeding mechanism is provided with a load sensor , load cell weighing signal module connected to the PLC. 其中，单/双螺杆喂料机构在其料斗26下方安装有由不锈钢材料制成的碟斗24。 Wherein the single / twin screw feeder mechanism 26 which is mounted below the hopper plate made of a stainless steel material hopper 24. 参见图6和图7，碟斗24具有与单/双螺杆喂料机构的物料输送腔25相连的底腔23，底腔23通过两侧的法兰22与输送腔25相连。 Referring to FIGS. 6 and 7, the bottom chamber 24 having a hopper plate and single / twin screw feeder mechanism 25 is connected to the material conveying chamber 23, the bottom chamber 23 is connected by a flange 22 on both sides of the conveying chamber 25. 使用该喂料机时，电机启动，并带动螺杆转动，物料从加料管加入，经过螺杆从出料口送出。 When using the feeder, the motor starts and drives the screw rotates, the material from the feeding tube, through the feed screw from the discharge port. 碟斗24的结构保证了不存料，物料的流动性好，在遇到流动性较差的物料，在料斗上进行垂直搅拌，同时可以很方便地在碟斗部分实现水平搅拌，保证物料连续输送。 Singles bucket structure 24 ensures that the material does not exist, the flow of materials is good, the material experience poor flowability, stirred at vertical hopper, and can be easily implemented in the horizontal plate portion of the bucket with stirring, to ensure a continuous material delivery. 综上所述，本发明失重式喂料机的特点是：1、 结构紧凑，占地面积小、操作方便及工艺效果好；2、 计量精度高，安装方式灵活，计量范围宽，适用范围广；3、 操作安全可靠，设有自动报警装置；4、 配料稳定，批量产品质量均匀，产品的一致性高；5、 提高生产效率，减少劳动强度；6、 生产灵活性增加——修改配比或更换原料方便快捷；7、 具有打印和通讯功能。 In summary, features of the present invention is that weight loss feeders: 1, compact, small footprint, easy operation and good process results; 2, high accuracy, flexible installation, a wide range of measurement for a wide range ; 3, safe and reliable operation, with automatic alarm device; 4, the ingredients stable, uniform batches of product quality, higher product consistency; 5, increase productivity, reduce labor intensity; 6, producing increased flexibility - modifying the ratio or replace materials convenient; 7, has a printing and communication functions.