objectives, surface acoustic wave atomizer [11] and static mesh atomizer [12] can suffer high pressure across the whole system, which inevitably results in high-energy consumption, high cost, and high loss. Furthermore, structures of this type have a low energy utilization rate in which their atomization process is random and uncontrollable, and are also extremely inconvenient to carry and practical use [13]. In light of this, [PERSON] et al. [14] invented an atomizing film that uses a high-frequency piezoelectric ceramic ring to drive the disperser with a micro-tapered aperture. This type of atomizer can effectively solve problems such as low energy utilization rate, large droplet size, and high dispersion degree [15]. Consequently, research on these types of atomizer have attracted tremendous attention from many scholars. In 1997, [PERSON] et al. [16] proposed a piezoelectric atomizer where the shaft excited on a circular film by a flexural transducer was stacked into a resonant film to generate atomization. Subsequently, the formation of droplets, which verified the atomization performance of the atomizer, was simulated when the intermediate medium was selected as water, ink, powder, and photoresist, respectively [17]. A control model of the atomizer during photolithography was established by [PERSON] et al. [18], and a similar atomizer was developed by [PERSON] et al. [19] and they took advantage of it for PMN-PT single-crystal spraying. In 2008, [PERSON] et al. [20] studied an atomizer with a symbol-type high-power driver, where the atomizing device was mainly comprised of a ring-shaped piezoelectric vibrator and a symbol-shaped nozzle plate. The atomizer could generate droplets with these parameters of a mass median aerodynamic diameter of 4.07 \(\upmu\)m, operating frequency of 127.89 kHz, and an atomization rate of 0.5 mL/min [21]. The condition of a stable atomization rate plays a vital role in the application and promotion of the piezoceramic vibrating mesh atomizer, and thus is particularly important for studies on the influencing factors of the atomization rate in a micro-tapered aperture atomizer. Atomizers of this type were subjected to spray cooling by [PERSON] [22], and it was found that the efficiency of spray cooling was closely related to the atomization rate, and that atomization rate is in turn related to aperture diameter. The micro-tapered aperture micro-atomizing film was used by [PERSON] [23] to invent a simple piezoelectric ring micro-fluidic splitter, and was also introduced in both the mass spectrometry (MS) and deposited the sample on the target substrate by means of a spray. The micro-tapered aperture atomizer was performed on the atomizer in spray cooling by [PERSON] et al., and the results showed that the atomization rate had a linear relationship with the cooling performance [24; 25]. The atomization rate plays a significant role in the piezoceramic vibrating mesh atomizer. In particular, it is used in some important application fields, for instance, spray cooling [26], inkjet printing [27], inhalation therapy [28], and many other aspects. Up until now, the influence of driving frequency and voltage on atomization rate has only been considered in some references [29; 30], but the impact factors are usually ignored. Herein, it is quite necessary to investigate the influencing factors of the atomization rate in the piezoceramic vibrating mesh atomizer, and explore the key working mechanisms. After investigating the piezoceramic vibrating mesh atomizer, our research group discovered the phenomenon of the dynamic tapered angle [31]. Meanwhile, its presence via a series of experiments was conducted and the pumping effect of a dynamic tapered angle was revealed, which explains why a piezoceramic vibrating mesh atomizer can realize atomization. This study aimed to analyze in depth the root cause influencing the atomization rate. First, a micro-tapered aperture in periodic variation can be considered as a micron-sized tapered flow tube valveless piezoelectric pump.