隔膜计量泵的控制方法、工作原理及市场报价
随着生产工艺指标和自动化水平的提高，计量泵的安全性和可控性变得越来越重要。石油化工等行业一直以生产过程的高度自动化而著称，这也是一个分布式的过程
分布式智能计算机控制系统是广泛应用的领域之一，这就要求配套的执行器计量泵也应具有灵活的控制方式，可以方便地与计算机系统形成各种控制回路，实现更复杂、更精确的过程控制。为了顺应这一新趋势
随着隔膜计量泵的不断发展，借助嵌入式微处理器系统，将多种调控功能和数据通信协议集成到计量泵中，真正实现了从冲程频率到冲程长度的二维调节，使其产品成为世界上第一台智能精密计量泵。隔膜计量泵采用专门设计加工的柔性隔膜代替活塞，在驱动机构的作用下实现往复运动，完成吸排过程。由于膜片的隔离作用，在结构上实现了计量流体与驱动润滑机构的隔离。高科技结构设计
而新材料的选用大大提高了隔膜的使用寿命。加上复合材料优异的耐腐蚀性能，隔膜计量泵已成为流体计量应用中的主要泵型。在隔膜计量泵家族中，液压驱动隔膜泵是利用液压油均匀地驱动隔膜
它克服了机械直接驱动方式下膜片受力过于集中的缺点，提高了膜片的使用寿命和工作压力上限。为克服单隔膜计量泵因隔膜损坏而可能出现的工作故障，部分水阳计量泵配备隔膜损坏传感器，实现隔膜破裂时的自动联锁保护
双隔膜结构的泵头计量进一步提高了安全性，适用于安全保护特别敏感的应用场合。
电磁驱动计量泵作为一种隔膜式计量泵，通过电磁铁产生脉动驱动力，省去了电机和调速机构，使系统紧凑紧凑。它是小量程低压计量泵的一个重要分支。
目前，varem精密计量泵的技术已经非常成熟。其流体计量输送能力Z可达0-1000000l/h，工作压力Z可达4000bar。其工作范围涵盖了工业生产领域的要求。
计量泵泵送的液体体积决定其计量能力。在一定的有效膜片面积下，泵输出流体的体积流量与冲程长度L和冲程频率f成正比：V∞a*f*L
当计量介质和工作压力确定后，可通过调节冲程长度L和冲程频率f，实现计量泵输出量的二维调节。
虽然行程长度和频率都可以作为调整变量，但在工程应用中，一般将行程长度作为粗调整变量，行程频率作为精调整变量：将行程长度调整到一定值，然后通过改变频率实现微调，增加调节的灵活性。隔膜计量泵也可以用相对简单的应用程序为简化系统配置，手动设定行程长度，仅以行程频率作为调节变量。
介绍了隔膜计量泵的控制方法和工作原理。其市场报价是根据流量、压力、材料、电机的特殊要求和其他工作条件而定。每台水泵的价格从850元到30万元不等。如有隔膜计量泵报价需求，请致电400-001-5655与上海龙亚计量泵事业部联系。
Control method, working principle and market quotation of diaphragm metering pump
With the improvement of production process index and automation level, the safety and controllability of metering pump become more and more important. Petrochemical and other industries have been known for the high degree of automation of production process, which is also a distributed process
Distributed intelligent computer control system is one of the widely used fields, which requires the matching actuator metering pump should also have a flexible control mode, which can easily form a variety of control loops with the computer system to achieve more complex and more accurate process control. In order to adapt to this new trend
With the continuous development of water slide ring metering pump, with the help of embedded microprocessor system, a variety of control functions and data communication protocols are integrated into the metering pump, which truly realizes the two-dimensional adjustment from stroke frequency to stroke length, making its product the first intelligent precision metering pump in the world. Diaphragm metering pump uses specially designed and processed flexible diaphragm instead of piston to realize reciprocating motion under the action of driving mechanism to complete the suction and discharge process. Due to the isolation function of the diaphragm, the metering fluid is isolated from the driving lubrication mechanism in structure. High tech structural design
The selection of new materials greatly improves the service life of the diaphragm. Coupled with the excellent corrosion resistance of composite materials, diaphragm metering pump has become the main pump type in fluid metering applications. In the diaphragm metering pump family, the hydraulic drive diaphragm pump uses the hydraulic oil to drive the diaphragm evenly
It overcomes the shortcomings of the diaphragm under the mechanical direct drive mode that the force is too concentrated, and improves the service life of the diaphragm and the upper limit of the working pressure. In order to overcome the possible working failure of single diaphragm metering pump due to diaphragm damage, some water cation metering pumps are equipped with diaphragm damage sensor to realize automatic interlock protection when the diaphragm breaks
The pump head metering with double diaphragm structure further improves the safety, and is suitable for the application where the safety protection is particularly sensitive.
As a diaphragm metering pump, electromagnetic driven metering pump generates pulsating driving force through electromagnet, which saves motor and speed regulating mechanism and makes the system compact. It is an important branch of small range low pressure metering pump.
At present, the technology of varem precision metering pump has been very mature. Its fluid metering capacity Z can reach 0-1000000l / h, and its working pressure Z can reach 4000bar. Its scope of work covers the requirements of industrial production.
The volume of liquid pumped by metering pump determines its metering capacity. Under a certain effective diaphragm area, the volume flow rate of the pump output fluid is proportional to the stroke length L and stroke frequency f: V ∞ a * f * L
When the metering medium and working pressure are determined, the two-dimensional adjustment of metering pump output can be realized by adjusting the stroke length L and stroke frequency f.
Although the stroke length and frequency can be used as adjustment variables, in engineering applications, the stroke length is generally used as coarse adjustment variable, and the stroke frequency is used as fine adjustment variable: adjust the stroke length to a certain value, and then realize fine adjustment by changing the frequency to increase the flexibility of adjustment. It can also be used for relatively simple applications
In order to simplify the system configuration, the stroke length is manually set, and the stroke frequency is only used as the adjustment variable.
The control method and working principle of diaphragm metering pump are introduced. Its market quotation is based on the flow, pressure, materials, special requirements of motor and other working conditions. The price of each pump ranges from 850 yuan to 300000 yuan. For quotation of diaphragm metering pump, please contact Shanghai Longya metering pump business department at 400-001-5655.