Whirling dynamiser vortex for water filter

There are many systems for vortex water dynamisation.
These are often expensive systems, impractical to use or slow down the flow of water.
I designed here a vortex based on a logarithmic spiral, also called spiral of growth. This spiral is stretched to form a vortex.
The product is a vortex tube. The system is placed at the outlet of a water filtration device, just before its exit at the tap. The dimensions of filtered outlets are standardized and are 7mm in diameter.
The water outlet pipe should slip easily into the product.