Reaction kettle for producing humic acid fertilizer

The utility model relates to a reaction kettle for humic acid fertilizer production, which comprises a reaction kettle body, the reaction kettle body is mounted on external equipment, a temperature adjusting mechanism and an adjusting mechanism are arranged on the reaction kettle body, and the temperature adjusting mechanism comprises a heating sleeve, a control pipe, a threaded ring, a threaded pipe, a telescopic mechanism, a top pipe, an elastic sheet, a connecting ring and a limiting ring. The heating sleeve is installed on the outer side of the reaction kettle body, the number of the control pipes is two, and when flow speed control is conducted, the two threaded pipes are in reverse threaded connection to the threaded ring, so that the jacking pipe can be driven to stretch out and draw back at the same time, the multiple elastic pieces are shrunk, and therefore the flow resistance in the control pipes can be increased; and when the resistance is reduced and the flow speed is increased, the temperature in