A peristaltic pump is like a tiny helper that helps move liquids from one place to another. It works like a pinch-and-push system: think of how you hold a toothpaste tube, then squeeze it and move your fingers along the tube to push out the toothpaste, and that's how a peristaltic pump works!
The pump has a flexible tube inside it, kind of like a straw. The tube is squeezed at one point by a little wheel or roller, and as it rolls along, it pushes the liquid inside it to move forward. Then, the roller loosens the tube, and it relaxes back to its original shape, ready for the next squeeze and push.
The best part? The liquid only touches the inside of the tube, so it doesn't get contaminated by anything else in the pump. This makes it great for moving things like medicine or food that need to stay clean and safe.
In summary, a peristaltic pump is a handy device that helps move liquids through a flexible tube by squeezing and pushing it along little by little.