Reciprocating injection device for breeding silkworms with feed

The reciprocating feeding device comprises a feeding spray head, the feeding spray head comprises a spray head body and a nozzle adjusting mechanism, the nozzle adjusting mechanism comprises a guide frame, and the guide frame is fixedly arranged in the spray head body and comprises a guide rod; the adjusting head is arranged on the guide rod in a sliding and sleeving mode, and an adjusting cavity annularly formed in the outer side of the guide rod is formed in the adjusting head; one ends of the multiple material distributing claws are circumferentially distributed on the outer side of the guide rod and located in the adjusting cavity, and the ends, located in the adjusting cavity, of the multiple material distributing claws are hinged to the guide rod; the middle parts of the plurality of material distributing claws are always elastically propped against the inner wall of the opening of the adjusting cavity, so that the other ends of the plurality of material distributing claws are dispersedly arranged at th