###### Abstract
[PERSON] [33] developed and validated a theoretical model for the torque and suction force of the electrically activated sucker. By adding a disk at the tip of the blades and installing a flexible skirt around the suction unit, resistance torque was \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multicolumn{2}{c}{**Adsorption Method**} & **Application Scenario** & **Advantages** & **Disadvantages** \\ \hline Magnetic & Permanent & & Strong adsorption & Only applicable to the \\ attraction & magnets & Magnetic wall & Simple structure & magnetic wall \\ \hline Negative pressure & Suction cups & Smooth flat wall & Strong adsorption & High Sealing Requirements \\ adsorption & Rotational-flow & Wide range of & Moderate adsorption & Complex structure \\  & adsorption unit & applications & Moderate adsorption & Louder noise \\  & & adsorption unit & applications & High power consumption \\ \hline Propeller thrust adsorption & & Wide range of & High maneuverability and & Inefficient \\  & & applications & safety & Susceptible to external influences \\ \hline Bionic & \begin{tabular}{c} Rheum \\ The [PERSON] der Waals \\ forces \\ \end{tabular} & Clean smooth wall & No need for extra power & Limited maneuverability \\  & & Lightweight & Complicated design \\  & & Low noise & Elevated costs \\  & Claws and thorns & Rough wall & Reduced load-bearing capacity \\ \hline Electrostatic adhesion & \begin{tabular}{c} Wide range of \\ applications \\ \end{tabular} & \begin{tabular}{c} Simple structure \\ Low energy consumption \\ Lightweight \\ \end{tabular} & Slow-moving speed \\  & & Low load capacity \\ \hline Hybrid adsorption & \
\begin{tabular}{c} Wide range of \\ applications \\ \end{tabular} &
\begin{tabular}{c} Integrating the advantages \\ of different adsorption \\ methods \\ \end{tabular} & Complex structure \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Comparison of the characteristics of various adsorption types. reduced, thereby optimizing adhesion performance and improving the efficiency of the electrically activated sucker. The impact of blade quantity and thickness on the adsorption performance of cyclone suction units has not been extensively studied, nor has significant research been conducted on wall-climbing cleaning robots equipped with such units. This paper focuses on the robot's design, the development of a theoretical model, and an analysis of potential adhesion hazards. The robot's main body was designed first, followed by the development of a theoretical model for the cyclone suction unit, which incorporates the critical parameters of blade quantity and thickness. The model was validated using computational fluid dynamics and experimental methods. This study designs four fan configurations with varying blade quantities to examine their effect on the internal flow field of the suction unit. The findings reveal that, within a certain range, the number of blades is a dominant factor, and increasing blade quantity significantly improves the distribution of nonlinear velocity in the z-plane, resulting in a substantial enhancement in suction force. As the number of blades increases, the thickness of the blades primarily affects the air volume within the rotating domain, suggesting that thinner blades are preferable. Moreover, this study finds that square suction units provide greater suction force than circular ones, owing to their superior negative pressure effect and larger adsorption area. The most critical adhesion risk identified is leakage at the edges of the suction unit.