How does precision metering valve improve the dynamic performance of the system?
Publish Time: 2025-07-14
In modern industrial automation and fluid control systems, precision metering valves, as key components, are essential for achieving high-precision flow control. In particular, some special application scenarios such as lubricating oil supply and chemical reagent addition have put forward higher requirements on the dynamic response speed, sealing and operational flexibility of the valve.1. Back suction function: prevent oil leakage, oil overflow and wire drawingAn important feature of precision metering valve is that it has a back suction function, that is, after the valve is closed, it can automatically generate a slight reverse suction force to ensure that the liquid in the pipeline will not leak or drip due to residual pressure. This function is particularly suitable for lubricating oil supply systems, which can effectively avoid oil leakage problems during equipment shutdown, reduce maintenance workload and extend equipment life. In addition, when handling media with higher viscosity (such as certain chemical raw materials), the back suction function can also prevent the occurrence of "wire drawing", that is, the slender liquid column formed by the liquid from the valve outlet, which not only affects the appearance, but may also cause environmental pollution or product pollution. By precisely controlling the instantaneous back suction action after the valve is closed, the precision metering valve can ensure that the medium stops flowing completely and maintain the cleanliness and safety of the system.2. Equipped with oil replenishment and oil discharge confirmation detection sensorsIn order to further enhance the reliability and automation of the system, many precision metering valves are equipped with oil replenishment and oil discharge confirmation detection sensors. These sensors can monitor the working status of the valve in real time after each operation is completed, and feedback to the control system to confirm whether the predetermined oil replenishment or oil discharge task has been completed. This sensor-based closed-loop control system not only improves work efficiency, but also reduces the need for manual intervention, making the entire production process smoother and more efficient.3. Foolproof design: ensuring operational safetyThe so-called foolproof design refers to the use of reasonable design means to make it difficult for incorrect operations to occur or even if they occur, they will not cause serious consequences. Precision metering valves usually use multiple protective measures to achieve this, such as setting clear operating sequence instructions and limiting the possibility of improper operation. Specifically, the valve may be equipped with a mechanical locking device or an electronic interlocking mechanism to ensure that the next step can only be continued when specific conditions (such as completing the previous step) are met. This can not only prevent the risks caused by misoperation, but also help new employees master the correct usage methods more quickly and reduce training costs.4. Fine-tuning function: precise flow controlLast but not least, precision metering valves often have fine-tuning functions, allowing users to make subtle adjustments to the flow according to actual needs. This function is particularly important for application scenarios that require extremely high flow accuracy, such as etching solution supply in semiconductor manufacturing and drug injection in medical equipment. In addition, some precision metering valves also support remote control and programming settings. Users can preset multiple different flow curves through computer software, which is convenient for fast switching under different working conditions. This flexibility not only improves the adaptability of production, but also provides great convenience for R&D testing.In summary, precision metering valve has greatly improved the dynamic performance of the system through a series of innovative designs, including back suction function, sensor detection, foolproof effect and fine-tuning function. It can not only effectively solve the common problems of oil leakage and oil overflow in traditional valves, but also significantly improve the safety and accuracy of operation, providing users with a more reliable and efficient fluid control solution.
