What are the advantages of wedge wire screen and perforated screen of filters?

The biggest advantages of wedge wire screens are anti-clogging and easy cleaning. The slots are V-shaped, wider on the inside and narrower on the outside, so particles don't get stuck easily—a quick backwash clears them off. This makes them great for fluids with lots of solids or high viscosity. They also have a high open area, low pressure drop, high flow capacity, and good mechanical strength, which makes them ideal for self-cleaning filters.

As for perforated screens, their strengths are durability and high precision. They're punched from solid metal plates, so they're rigid, resistant to high pressure and impact, and very stable under tough conditions. If made into multi-layer sintered mesh, the filtration accuracy can be extremely high—down to 1 micron—and the pores stay consistent without deforming. Plus, mass production costs are relatively low.

In short: if you're worried about clogging and need backwashing, go with wedge wire screens. If you need high pressure resistance and tight precision, go with perforated screens.