Retainer with electric heating nail for granulation system

The utility model relates to the technical field of feed granulation, in particular to a retainer with a first electric heater for a granulation system, which comprises a heating device, the heating device comprises a retainer body, the first electric heater and a fixing block, a plurality of sliding grooves are formed in the outer circular surface of the retainer body, fixing grooves are formed in two sides of the front end of each sliding groove, and the fixing blocks are arranged in the fixing grooves. A sliding groove is formed in the retainer body, clamping grooves are formed in the two side faces of the interior of the sliding groove, a sliding block is fixedly installed on the inner circle face of the first electric heating piece, clamping blocks are fixedly installed on the two sides of the sliding block, the sliding groove of the retainer body is detachably connected with the sliding block of the first electric heating piece, and the fixing groove is detachably connected with the fixing block. The el