Extraction equipment

The utility model discloses extraction equipment which is characterized by comprising a driving mechanism of a direct-connection motor reducer, a worm gear and worm mechanism, a support, an extraction separating tank, a sucking tube, a flexible hose and a self-priming pump, threads on a worm of the worm gear and worm mechanism are trapezoidal threads, a worm gear shaft is driven by the direct-connection motor reducer, and a position encoder connected with a DCS (distributed control system) is arranged at the other end of the worm gear shaft; a liquid level meter is arranged on the extraction separating tank; and the top of the sucking tube is connected with the bottom of the worm by a blind flange, one end of the flexible hose is connected with the sucking tube, and the other end of the flexible hose is connected with the self-priming pump. Rotational movement can be changed into linear movement by the worm gear and worm mechanism according to continuous change of a double-phase interface of the extraction se