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超声波清洗机脱气的优点

作者:超声波清洗机生产厂家 来源:http://www.jnthcsb.com 时间:2021-01-09 15:21:21

很多在超声波清洗机设备上都有,那么这个到底是什么原理和功能,下面就为大家解答:

Many of them are used in ultrasonic cleaning equipment. What are the principles and functions of this? Here's the answer:

当超声波进入溶液时,会产生交变压力。用于空化阈值的声波在液体中传播时会产生空化气泡,能显著提高气体从溶液到气泡的传质速率。空化气泡是由溶液中的微小气核产生的,这些气核是由声波稀相的拉应力(负压)产生的。

When the ultrasonic wave enters the solution, it will produce alternating pressure. The acoustic wave used for cavitation threshold will produce cavitation bubbles when it propagates in liquid, which can significantly improve the mass transfer rate of gas from solution to bubbles. Cavitation bubbles are generated by tiny gas nuclei in the solution, which are generated by the tensile stress (negative pressure) of the dilute phase of sound wave.

超声波清洗机脱气的优点(图1)

如果在空化形成后拉伸应力仍然存在,时空气泡将膨胀到其初始尺寸的许多倍。在这种情况下,空化气泡保持球形,然后增长、振动和塌陷。当超声波作用时,溶液中的气体成分可以通过气液界面的“定向扩散”进入空化泡,空化泡进入人的生长阶段。当空化气泡在溶液表面塌陷时,气体会从气泡中逸出,从而引起脱气。

If the tensile stress still exists after cavitation, the bubble will expand to many times of its initial size. In this case, cavitation bubbles remain spherical, then grow, vibrate and collapse. When the ultrasonic wave is applied, the gas components in the solution can enter the cavitation bubble through the "directional diffusion" of the gas-liquid interface, and the cavitation bubble enters the human growth stage. When the cavitation bubble collapses on the surface of the solution, the gas will escape from the bubble and cause degassing.

超声波脱气设备的优点是,泡沫是大量气泡聚集而成,超声波脱气设备是在泡沫形成的早期,气泡不是大量积聚的液体消泡、除气,或者溶解,混合在液体气体中消泡、除气。整个过程不使用任何消泡剂,完全是物理消泡,也可以称为机械消泡。对于已经产生的表面泡沫,该装置没有明显的效果,需要用消泡膜来解决。

The advantage of the ultrasonic degassing equipment is that the bubbles are gathered by a large number of bubbles. The ultrasonic degassing equipment is in the early stage of the bubble formation. The bubbles are not a large number of accumulated liquid defoaming, degassing, or dissolving, and are mixed in liquid gas to defoaming and degassing. The whole process does not use any defoamer, it is physical defoaming, also can be called mechanical defoaming. For the surface foam that has been produced, the device has no obvious effect and needs to be solved by the antifoaming film.

脱气主要采用超声波“定向扩散”,一旦空化发生,内部仍有空气,在一些熔融液体脱气净化应用中不产生空化。排出液体空气,降低超声波空化反应产生气泡的阻力,提高超声波清洗机的清洗效率。另一个影响是超声波清洗机工作时间长了会产生一种超声波疲劳,降低清洗效果和效率,排氧气功也能消除这种超声波疲劳。

Ultrasonic directional diffusion is mainly used in degassing. Once cavitation occurs, there is still air inside, which will not produce cavitation in degassing purification of some molten liquids. Discharge liquid air, reduce the resistance of bubble generated by ultrasonic cavitation reaction, improve the cleaning efficiency of ultrasonic cleaning machine. Another effect is that the ultrasonic cleaning machine will produce a kind of ultrasonic fatigue when it works for a long time, which can reduce the cleaning effect and efficiency, and the oxygen exhaust Qigong can also eliminate this kind of ultrasonic fatigue.

综上所述,可以看出超声波清洗设备的非常强大,可以更好地达到清洗的目的,提高清洗效果。

To sum up, it can be seen that the ultrasonic cleaning equipment is very powerful, which can better achieve the purpose of cleaning and improve the cleaning effect.