What is the Unidirectional Pressure Retention and Air Tightness of the Micro Air Pump?

Whether the micro pump has good air tightness and unidirectional pressure retention is an important difference between distinguishing industrial grade micro pump and civil micro pump. Air tightness is the ability of a micro pump to maintain its internal sealing state during the process of conveying a fluid or gas. This performance is a key element necessary for the work of the micro pump, and it plays an important role in many application fields.

Excellent micro pump air tightness can guarantee the accuracy, accuracy and reliability of conveying fluid or gas, thus ensuring the quality and efficiency of its output. At the same time, good air tightness can also effectively prevent leakage, and reduce energy consumption and noise, reduce the impact on the environment. Therefore, for many areas requiring precision fluid or gas delivery, such as medical care, life science, environmental protection, etc., micro pump gas tightness can be said to be crucial. In order to ensure the good performance of the micro-pump air tightness, manufacturers usually use a variety of technical means, such as optimizing the sealing structure, choosing high-quality materials, etc. In addition, users who use and maintain micro pumps can also take some measures to ensure their air tightness, such as regular cleaning and maintenance of equipment, avoiding overuse and damaging equipment, timely replacement of worn parts, etc. Micro pumps for industrial-grade applications are often used to transmit high-risk or high-value media, have good air tightness and avoid medium leakage, which is a typical feature of industrial-grade micro pumps. Customers often ask questions about the air tightness or pressure retention of the pump. Many customers will confuse the unidirectional pressure retention of the pump with the air tightness of the pump itself. The two performances are somewhat different, but they also affect each other.

Micro pump unidirectional pressure refers to the micro vacuum pump of airtight container vacuum or micro pumping pump for airtight container play positive pressure, micro pump after power, airtight container vacuum or positive pressure can still keep for a long time, also requires the pump has the role of one-way valve, emphasizes the problem of air unidirectional, namely the pump unidirectional pressure. The unidirectional pressure retention of the micro pump is a very important technology, which can ensure the stability and reliability of the pump. In practical work, micro pumps often need to deal with a variety of liquids, such as chemicals, food liquids, medical liquids and so on, these liquids often have a variety of pressure differences and nonuniformity, if not using unidirectional pressure retention technology, it will lead to the performance of the pump, and even cause pump failure.One-way pressure retention technology can effectively solve this problem by accurately controlling the pump by setting up the pressure valve and the front and rear pressure difference sensor. When the output pressure of the pump is higher than the set value, the pressure valve will automatically open to release the excess pressure to prevent damage to the pump. At the same time, the front and rear pressure difference sensor can monitor the difference between the output pressure and the inlet pressure of the pump, and adjust the working state of the pump in real time to ensure that the pump can always be in a stable and normal working state. This performance was also elaborated somewhat in previous articles. The micro pump is a power element of the gas circuit system. Its main responsibility is to provide power for the system, and it can not place the function of the one-way valve on the pump. There are two one-way valves inside, but they are different from the one-way check valves in the market. Their function is to make it reliably ensure the unidirectionality of the airflow during the pump operation, and to pursue the dynamic performance, rather than the function of tightly shut off in static conditions. If the pump needs to stop after the pressure, the one-way check valve valve should be added in the air circuit, and the pipeline air tightness treatment should be done.

The air tightness of the micro pump reflects the leakage of the pump itself when the micro pump is used for gas transmission. The air tightness of the micro-pump itself is affected by the mechanical structure, assembly process and other factors. Micro pump will be air tightness test, standard version and quality version of products have strict test standards for air tightness, simplified version of products do not require air tightness. How to ensure the air tightness of the micro pump itself. Reasonable design: in the design of the micro pump, it is necessary to consider various factors according to the actual working environment and use requirements, such as the pump body, seal, valve, pipe, interface, size, shape, material, process, etc., to ensure the matching accuracy and tightness between the parts, so as to reduce the possibility of gas leakage. High quality materials: choose high quality sealing materials and hydraulic component materials, with good chemical corrosion resistance, low permeability and high sealing, can effectively prevent leakage, improve the air tightness of the pump. Strict production process: the use of high precision machine tools, molds and testing equipment, strict control of the factors in the production process, such as process parameters, processing accuracy, inspection standards, etc., to ensure the quality of each pump, and have good air tightness performance. Strict testing standards: in the production, each micro-pump should be strict air tightness testing, including the use of professional testing equipment for comprehensive leakage inspection, and comprehensive quality inspection of the pump body, seals and other related parts, so as to ensure the quality, improve the air tightness of the pump, to ensure its reliable performance.

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