Spiral coil type heater

The utility model discloses a spiral coil type heater, and belongs to the technical field of spiral coil type heaters. The utility model discloses a spiral coil type heater. The device comprises a device body, a top plate and dust screens, a sealing cover is mounted above the device body; an extrusion plate is mounted on the outer wall of the sealing cover; first sliding blocks are installed on the two sides of the extrusion plate. A limiting plate is connected to the middle of the extrusion plate, the top plate is located above the sealing cover, outer plates are installed on the two sides ofthe top plate, inner plates are installed on the inner sides of the outer plates, inner rods penetrate through the inner sides of the inner plates, sliding plates are installed on the right sides ofthe outer walls of the inner rods, shells are installed at the bottoms of the sliding plates, and dust screens are located on the two sides of the shells; according to the utility model, the interiorof the device body can be c