Wedge wire Curved screen is a screen surface for the arc to open away from wet fine screening equipment. According to the different feeding methods are divided into gravity and pressure arc curved sieve screen. Artesian curved screen is a small curvature, low pressure, low-speed feeding curved screen, thanks to a certain height difference of the feed material screening and to the mouth, along the arc tangent in the direction screen surface for gravity feed. Pressure is a sweeping curved screen, high-pressure, high-speed feeding curved screen, which is the use of sand pump nozzle into the raw material to the slurry under the action of the material at high speed along the curved screen surface tangent to the direction of the pressure feedstock.