隔膜計量泵的控制方法、工作原理及市場報價
隨著生產(chǎn)工藝指標(biāo)和自動化水平的提高，計量泵的安全性和可控性變得越來越重要。石油化工等行業(yè)一直以生產(chǎn)過程的高度自動化而著稱，這也是一個分布式的過程
分布式智能計算機(jī)控制系統(tǒng)是廣泛應(yīng)用的領(lǐng)域之一，這就要求配套的執(zhí)行器計量泵也應(yīng)具有靈活的控制方式，可以方便地與計算機(jī)系統(tǒng)形成各種控制回路，實現(xiàn)更復(fù)雜、更精確的過程控制。為了順應(yīng)這一新趨勢
隨著隔膜計量泵的不斷發(fā)展，借助嵌入式微處理器系統(tǒng)，將多種調(diào)控功能和數(shù)據(jù)通信協(xié)議集成到計量泵中，真正實現(xiàn)了從沖程頻率到?jīng)_程長度的二維調(diào)節(jié)，使其產(chǎn)品成為世界上第一臺智能精密計量泵。隔膜計量泵采用專門設(shè)計加工的柔性隔膜代替活塞，在驅(qū)動機(jī)構(gòu)的作用下實現(xiàn)往復(fù)運(yùn)動，完成吸排過程。由于膜片的隔離作用，在結(jié)構(gòu)上實現(xiàn)了計量流體與驅(qū)動潤滑機(jī)構(gòu)的隔離。高科技結(jié)構(gòu)設(shè)計
而新材料的選用大大提高了隔膜的使用壽命。加上復(fù)合材料優(yōu)異的耐腐蝕性能，隔膜計量泵已成為流體計量應(yīng)用中的主要泵型。在隔膜計量泵家族中，液壓驅(qū)動隔膜泵是利用液壓油均勻地驅(qū)動隔膜
它克服了機(jī)械直接驅(qū)動方式下膜片受力過于集中的缺點(diǎn)，提高了膜片的使用壽命和工作壓力上限。為克服單隔膜計量泵因隔膜損壞而可能出現(xiàn)的工作故障，部分水陽計量泵配備隔膜損壞傳感器，實現(xiàn)隔膜破裂時的自動聯(lián)鎖保護(hù)
雙隔膜結(jié)構(gòu)的泵頭計量進(jìn)一步提高了安全性，適用于安全保護(hù)特別敏感的應(yīng)用場合。
電磁驅(qū)動計量泵作為一種隔膜式計量泵，通過電磁鐵產(chǎn)生脈動驅(qū)動力，省去了電機(jī)和調(diào)速機(jī)構(gòu)，使系統(tǒng)緊湊緊湊。它是小量程低壓計量泵的一個重要分支。
目前，varem精密計量泵的技術(shù)已經(jīng)非常成熟。其流體計量輸送能力Z可達(dá)0-1000000l/h，工作壓力Z可達(dá)4000bar。其工作范圍涵蓋了工業(yè)生產(chǎn)領(lǐng)域的要求。
計量泵泵送的液體體積決定其計量能力。在一定的有效膜片面積下，泵輸出流體的體積流量與沖程長度L和沖程頻率f成正比：V∞a*f*L
當(dāng)計量介質(zhì)和工作壓力確定后，可通過調(diào)節(jié)沖程長度L和沖程頻率f，實現(xiàn)計量泵輸出量的二維調(diào)節(jié)。
雖然行程長度和頻率都可以作為調(diào)整變量，但在工程應(yīng)用中，一般將行程長度作為粗調(diào)整變量，行程頻率作為精調(diào)整變量：將行程長度調(diào)整到一定值，然后通過改變頻率實現(xiàn)微調(diào)，增加調(diào)節(jié)的靈活性。隔膜計量泵也可以用相對簡單的應(yīng)用程序為簡化系統(tǒng)配置，手動設(shè)定行程長度，僅以行程頻率作為調(diào)節(jié)變量。
介紹了隔膜計量泵的控制方法和工作原理。其市場報價是根據(jù)流量、壓力、材料、電機(jī)的特殊要求和其他工作條件而定。每臺水泵的價格從850元到30萬元不等。如有隔膜計量泵報價需求，請致電400-001-5655與上海龍亞計量泵事業(yè)部聯(lián)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.