Mass spectrometer interface with extraction lens arrangement

The utility model relates to a mass spectrometer interface with an extraction lens device, which is characterized in that a sampling cone, an intercepting cone, a primary extraction lens and a secondary extraction lens are sequentially arranged in a bearing part, the sampling cone is provided with a first through hole, the intercepting cone is provided with a second through hole, the primary extraction lens is provided with a barrel-shaped channel, and the secondary extraction lens is provided with a second through hole. The first-stage extraction lens is provided with a first through hole, the second-stage extraction lens is provided with a third through hole, the channel of the first-stage extraction lens extends into the inner side inclined plane area of the interception cone, a gap is formed between the interception cone and the first-stage extraction lens, the first-stage extraction lens and the second-stage extraction lens are fixed on the bearing part, and the second-stage extraction lens is fixed on t