I have a T-shaped pipe that is connected to a vacuum pump. Along one side, there are 4 areas of 9 holes where air will get sucked in from the surroundings. It's used to pick up some small objects.
The problem is the 2 areas of holes that are closer to the center have a much higher intake flow/pressure compared to the 2 further areas, that it renders those 2 less-/ineffective.
Hole sizes and the general positions of the hole areas are fixed, so I'm thinking of balancing it by adjusting the number of holes at each area instead. (edit: Currently can't use a flow regulator in this application, any other suggestions instead of changing number of holes are welcome as well)
I am not trying to achieve the exact same suction pressure for each area, but rather to have sufficient suction pressure at each area. Will changing the number of holes in each area be able to balance the suction pressure? My guess was reducing the number of holes for the 2 middle areas or increase for the 2 end areas, but I'm not sure by how many. If you could provide a general idea/example on how to calculate this, or an alternative method to accomplish this, that would be great.