DEVICE FOR MAINTAINING THE OPTIMUM LEVEL OF CLEANLINESS OF THE WORKING LIQUID IN THE HYDRAULIC SYSTEM Russian patent published in 2018 - IPC F15B21/04 

FIELD: technological processes.

SUBSTANCE: device is designed for cleaning working fluid and can be used for maintenance of hydraulic systems of stationary and mobile units, in particular excavators, tractors and other types of transport, including in the field. Device comprises a working fluid cleaning unit including a pump and at least one filter coupled to the pump, a pump control unit, a temperature monitor for the liquid to be cleaned, connected to the pump control unit. In this case, the working fluid cleaning unit is adapted to be connected to the drain hole of the hydraulic system tank with the formation of a circulation circuit of the working fluid through the purification unit, with the provision of the supply of purified liquid to the tank at a level above the level of the liquid from the tank to the purification unit. Pump control unit is designed to turn on / off the pump when the temperature of the liquid to be cleaned is higher / lower than the set value, respectively, ensuring the pump cycle, determined by the formula.

EFFECT: maintenance of an optimum level of cleanliness of a working liquid in hydraulic systems.

9 cl, 4 dwg