Cool. Just to clarify, the red balls act as one-way valves that allow for air evacuation in the chamber beneath upon the downstroke of the cap, loading the chamber with fluid then the spring mechanism completes the pump cycle during the upstroke by returning back to the original position. Repeated pumps move more fluid closer to the orifice/opening of the pump. I see that the downside is that the spring is in contact with the fluid, limiting its use to non-metal corroding liquids.
The pump design prevents air from entering the bottle to maintain hygiene and prevent contamination. However, despite the decrease in volume as the liquid soap is dispensed, the bottle doesn't collapse or deform. Why is that?
This is out of context but can you please tell me how did you make this animation? It's wonderful. I need to present the mechanism for my university project. Please help! I would be really grateful.
I think you talk about the plastic ball at 1:56. That ball keeps the soap at upper part. So on the next push, soap is readily available and poured into our hands immediately.
