Multi-stage sample gas filtering device of gas analyzer

The utility model relates to a sample gas multi-stage filtering device of a coal gas analyzer, and belongs to the technical field of filtering devices. According to the technical scheme, an analyzer (1) is fixedly connected with a connecting pipe (3), the other end of the connecting pipe (3) is fixedly connected with a filtering tank (2), and a spraying device (11) is respectively connected with the filtering tank (2) and the connecting pipe (3); the sealing cover (4) is installed at the top end of the filtering tank (2), the connector (7) is fixedly connected to the sealing cover (4), and the filtering net (8) is installed in the connector (7) in a sliding mode; the activated carbon plate (9) is mounted in the filtering tank (2) in a sliding manner; and the gas-liquid separator (10) is arranged in the connecting pipe (3). The device has the beneficial effects that the gas-liquid separator is used for screening the sample gas, so that other impurities are prevented from entering the analyzer along with the sa