Grain catcher and internal -combustion engine

The utility model relates to a waste gas treatment technical field discloses a grain catcher and internal -combustion engine. Wherein, grain catcher includes: the filter core, this filter core is arranged in the granule of entrapment waste gas, the filter core jar body, this filter core jar body cover is located the outside of filter core to first end and second end has, go into the gas pitcher body, should go into the gas pitcher body and have the waste gas input port and be connected to first end, go out the gas pitcher body, this gas pitcher body has the waste gas delivery outlet and is connected to the second end. Wherein, go into the gas pitcher body with at least detachably that go out in the gas pitcher body are connected to the filter core jar body is in order following first end or second end are changed the filter core. The utility model discloses a grain catcher's filter core can be replaced, can save the fuel, has avoided again that the regeneration of traditional trap thetime is hardening cracked