Patent ID: 9290900
Filing Date: 2016-03-22
CPC Classification: B01D,C02F,E02B,Y02A

Claim Text:
1. An oil-water separating device, comprising an oil gathering chamber enclosed by a wall; at least a part of the a surface of the wall is covered with a porous, oleophilic and hydrophobic layer, which obstructs penetration of water and allows penetration of oil; the device also comprises a fixed layer covering on a surface of the porous, oleophilic and hydrophobic layer for limiting the flowing of the porous, oleophilic and hydrophobic layer, and the fixed layer allows penetration of water and oil; a pore diameter of said porous, oleophilic and hydrophobic layer is 300-850 μm, and a porosity is 10-40%; wherein, an entire surface of the wall is covered with the porous, oleophilic and hydrophobic layer; wherein, the wall and the fixed layer comprise a plurality of through holes, an oil-water separating chamber is formed between the wall and the fixed layer, and the porous, oleophilic and hydrophobic layer is filled within the oil-water separating chamber; and wherein the oleophilic and hydrophobic layer is an accumulation of precoated silicon sands; a sphericity of the precoated silicon sand is more than 0.7, a particle diameter is 300-850 μm, and an accumulation density is 1.4-1.65 g/cm 3 ; the precoated silicon sand is silicon sand with a surface covered with a coating layer, and the precoated silicon sand is formed by mixing the silicon sand and an oleophilic and hydrophobic resin and by being cured; a diameter of said through holes is no larger than the particle diameter of the precoated silicon sand; and a thickness of the coating layer is 0.1-10 μm.