Abstract: The utility model relates to a filter cartridge device is crossed to ozone tail gas, including upper end cover (2) and bottom end cover (3) that the rigid coupling is in the same place. The bottom end cover has air inlet (a), have venthole (b) on the upper end cover, install the filter screen of nai ozone (4) between upper end cover and the bottom end cover, the position that the filter screen of nai ozone corresponds the air inlet has the device of sheltering from (4a), it has clearance (5) that can let ozone pass through to shelter from between device and the air inlet. As preferred, the air inlet is the cavity cylindricality of upwards the extending body that the bottom end cover bottom set up, it is uncovered decurrent boss to shelter from the device, the clearance is located between the inner peripheral surface of outer peripheral face and the boss of the cavity cylindricality body. Be equipped with on the upper end cover along the protruding edge of rotation (c) that its outer peripheral face extends. The utility model discloses need not other joints, ribbon and pipeline, the equipment is simple and neat and artistic. And being connected of convenient and tank lid, be convenient for the consumer or after sale personnel maintain the change.
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