Candle filter capable of efficiently washing filter residues

The utility model discloses a candle filter capable of efficiently washing filter residues. The candle filter comprises an upper seal head, a filter cylinder, a filter candle tube and a crushing and stirring device mounted on the outer side of the filter cylinder, when the filter is used for deslagging, cleaning liquid at the bottom flows circularly, so that filter residues are prevented from being bonded with one another, and a guarantee is provided for full crushing of the filter residues; liquid below the liquid level switch fully and circularly flows through the crusher, filter residues at the bottom flow along with the liquid, are lifted by the spiral auger and then are crushed, the filter residues are reduced into fine particles to a greater extent, mother liquor in the filter residues is convenient to leach out, the washing time of the filter residues is short, the consumption of cleaning liquid is small, and the overall washing efficiency is high; the crusher is arranged outside the filter, so that a