Optimization of the Stirring Blade Structure of the Pumping Unit Based on the Improvement of Concrete Suction Efficiency

Table 3

The movements of geometries.

Time	Stirring blade	S-pipe	Concrete piston L	Conveying cylinder L	Concrete piston R	Conveying cylinder R
0.5–2.1 s	25 r/min	0	−1 m/s	Push	1m/s	Suction
4.1–5.9 s
2.1–2.3 s		6.12 rad/s	0	—	0	—
5.7–5.9 s
2.3–3.9 s		0	1m/s	Suction	−1 m/s	Push
5.9–7.5 s
3.9–4.1 s		−6.12 rad/s	0		0
7.5–7.7