Oil Mist Filter

An oil mist filter, comprising:

• a housing with a base and a top cover on the base, the base being formed with an oil-collecting chamber, the top cover being formed with a filtering space and a sucking space, the housing defining an axis extending through the filtering space and the sucking space, the filtering space being formed with an intake port in communication with outside, and an opposite sucking port in communication with the sucking space, the sucking space being formed with an assembling hole located corresponding to the sucking hole, and an exhaust port being formed at a bottom of the sucking space and in communication with the oil-collecting chamber of the base, the housing being further provided with an oil-discharging hole at a bottom of the filtering space and at a bottom of the oil-collecting chamber, respectively;
• a shell being a hollow structure provided with an inlet and outlet which are located at top and bottom of the shell, respectively, and in communication with the oil-collecting chamber of the housing, the shell being further provided along the axis with a receiving port which is located corresponding to the assembling hole of the housing;
• a filtering assembly provided with a porous spoiler curved in an arc convex toward the intake port of the top cover, and a first filtering screen and a second filtering screen being arranged between the spoiler and the sucking port of the top cover;
• a sucking mechanism provided with a wind wheel disposed in the sucking space of the housing, and a motor disposed in the receiving port of the shell, the wind wheel being connected to and rotated by the motor;
• and
• a filtering cylinder being a hollow structure provided on an inner surface thereof with an inner filtering layer and an outer filtering layer, and the filtering cylinder having a closed end and an opposite open end which is in communication with the outlet of the shell, by such arrangements, oil mist is sucked into the intake port of the housing and filtered by the filtering assembly, then flows through the sucking space, the oil-collecting chamber and the shell, and then is filtered by the inner and outer filtering layers and finally exhausted from the filtering cylinder.