Extraction device and extraction method of Fu orange pectin and application of Fu orange pectin

The invention provides an extraction device of Fu orange pectin. The extraction device comprises a primary extraction device and a secondary extraction device, the first-stage extraction device is used for performing primary extraction on degreased Fu orange peel to obtain a first-stage filtrate and a first-stage filter material, the second-stage extraction device is used for performing secondary extraction on the first-stage filter material to obtain a second-stage filtrate, and the second-stage filtrate and the first-stage filtrate are mixed and concentrated to obtain crude pectin; a first output port for outputting first-stage filtrate is formed in the bottom of the first-stage extraction device, and a second output port for outputting a first-stage filter material is formed in the side wall of the first-stage extraction device; a first input port for receiving first-stage filtrate and a second input port for receiving a first-stage filter material are formed in the side wall of the second-stage extraction