Based on the discrete phase model (DPM) solid-liquid two-phase flow model and MATLAB image processing technology, the Integrated Prefabricated Pumping Station is used as the research object to study the deposition characteristics under different flow rates, different particle sizes, and different liquids. Taking into account the incomplete symmetry of the internal flow of the prefabricated pumping station, the deposition characteristics of the prefabricated pumping station under single/dual pumps are also analyzed.

The dual pumps are symmetrically distributed in the integrated prefabricated pumping station, and the trajectory of the particles at the bottom of the pump pit is measured by using high-speed photography experiments when the inlet valve is closed. The results show that as the flow rate increases, the deposition rate of the separated prefabricated pumping station decreases. As the particle size increases, the particles move farther away from the vertical barrier weir.

In the particle size range of 6-10mm, the deposition rate decreases as the particle size increases. As the liquid level increases, the deposition rate first decreases and then increases. In the case of a single pump operation, the deposition rate of the right pump operation is less than the deposition rate of the left pump operation. The deposition rate change when the right pump is working is basically the same as the deposition rate when the double pump is working. The movement path of the particle The movement of the particle is farther away from the vertical barrier weir. In the particle size range of 6-10mm, the deposition rate decreases as the particle size increases. As the liquid level increases, the deposition rate first decreases and then increases.

In the case of a single pump operation, the deposition rate of the right pump operation is less than the deposition rate of the left pump operation. The deposition rate change when the right pump is working is basically the same as the deposition rate when the double pump is working. The movement path of the particle The movement of the particle is farther away from the vertical barrier weir. In the particle size range of 6-10mm, the deposition rate decreases as the particle size increases. As the liquid level increases, the deposition rate first decreases and then increases. The deposition rate change when the right pump is working is basically the same as the deposition rate when the double pump is working. The movement path N 1 of the particles is longer. As the flow rate decreases and the particle size increases, the following characteristics of the particles decrease and more easily impact walls and edges, which causes long-term deposits. The research results can provide some suggestions for the anti-settling performance design of the prefabricated pumping station.