Spiral-flow type anaerobic reactor

The utility model discloses a spiral-flow type anaerobic reactor. The reactor comprises a reactor chamber body, and a gas-liquid separator and a water seal tank which are arranged above the reactor chamber body and connected with each other, a three-dimensional rotational flow water distribution system, a first-stage three-phase separator, a backflow water collection system, a second-stage three-phase separator and a water outlet device are arranged in the reactor chamber body from bottom to top; a gas collection system is further arranged in the reactor chamber body, the gas collection systemis connected with a gas inlet of a gas-liquid separator, and a separation liquid outlet of the gas-liquid separator is connected with a separation liquid return pipe arranged in the reactor chamber body; the three-dimensional rotational flow water distribution system comprises a water inlet and distribution device and a backflow water distribution device arranged above the water inlet and distribution device. According t