Physics Vortex/Cyclone Floor Drain

Update on May 15, 2026:

After learning, the spiral is actually not important. What's important is to limit the water flow to avoid exceeding the drainage pipe's capacity, which then allows for both air pressure balance and drainage. Please go to the new model:

Best Physics Floor Drain Limiting Water Flow Rate Balancing Air Pressure Blocking Hair - Free 3D Printed Model - MakerWorld

After testing, the new model is very effective at blocking hair and drains very smoothly. The domed version can also block drain flies (in fact, if there are drain flies in the sewer, it is recommended to flush the sewer with hot water, and also sprinkle dinotefuran powder after bathing for better insect prevention)

--------------------------------------------------------

The floor drain at home drains very slowly after the spiral disappeared. I tested it and it was because of unbalanced pressure, requiring air to be introduced for normal drainage. So I made this and added diversion grooves to guide the water flow to form a vortex

After testing, the drainage was much faster. According to my mother's request, I added a replaceable filter screen

There are three parts in total. The air intake pipe is detachable; small debris cannot be blocked once removed