Dust removal mechanism and feeding device

The utility model relates to the technical field of chemical feeding, and discloses and provides a dust removal mechanism and a feeding device, which comprise a box body, a water inlet pipe, a water discharge pipe, a dust suction pipe, a dust suction cover and a negative pressure generating piece, the box body is provided with a containing cavity, and the containing cavity is provided with a dust inlet, a water inlet and a water outlet; the water inlet pipe is communicated with the accommodating cavity through the water inlet; the drainage pipe is communicated with the accommodating cavity through the drainage port; the dust suction pipe is communicated with the accommodating cavity through the dust inlet; the dust collection cover is provided with a dust collection channel, the dust collection channel is provided with a dust collection port and a dust outlet, and the dust collection cover is communicated with the dust collection pipe through the outlet; the negative pressure generating piece is communicated