I have a pot with water inside and I need to drip the water from it with a specific flow. I can control this flow changing the size of the hole at the bottom of the pot. Check image below.
The problem is that as time goes by, the height H of water column gets smaller and the flow of water gets smaller (of course). How can I overcome this problem?
I dont need a very precise solution to this problem. The thing is that I have a vacuum robot which has a mop that clears the floor. So I added a pot over it so the robot drips water in front of it and the mop goes over that drops of water and make the floor cleaner. It works perfectly however as time passes, the water drips too slow and the floor does not clean very well anymore.
So I was wondering if there is some type of thing/valve that I can easily build/buy that makes the flow constant, no matter the height?
note: my "hacked" solution to this problem was to use a very large pot with a small height, so as time goes by the H does not change much and so the flow keeps more steady, however even this causes too much variance in the water amount that drips.