DEVICE FOR REMOVING THE SURFACE LAYER OF LIQUIDS Russian patent published in 2022 - IPC C02F1/40 B01D17/32 

FIELD: technological fluids cleaning.

SUBSTANCE: invention relates to a device for removing the surface layer of oily liquids and can be used in treatment facilities for water supply and sewerage in the chemical, metalworking and other industries when cleaning technological, cutting fluids from organic impurities. The device is installed in a settling tank, at the bottom of which there is a scraper conveyor. To drain the contaminated and purified liquid, branch pipes are provided. The device consists of a float in the form of a rectangular parallelepiped strung on two rods, flywheels, two springs strung on the rods, a bar in the form of a channel bar attached to the bottom of the oil intake. The oil intake is made in the form of a rectangular frame, consisting of interconnected and communicating trays, two drain systems for drainage of the surface layer of the liquid, connected to the intake bottoms and consisting of a movable pipe made of a straight section, an outlet and a drain pipe. An additional tank is fixed on the sedimentation tank, communicating with the sedimentation tank by a pipeline, and in which a float-support is located, on two rods of which a load is installed, providing the float-support in a vertical position. Through rods and two rocker arms, both floats are connected to a counterweight outside the tanks.

EFFECT: improving the reliability of operation and the quality of separation of the surface oil-containing layer and pure water.

1 cl, 4 dwg