Material conveying transition mechanism, pumping device and spraying equipment

The invention relates to a material conveying transition mechanism, a pumping device and spraying equipment. The material conveying transition mechanism comprises: a device body provided with a containing space, a feeding port and a discharging port, wherein the feeding port and the discharging port communicate with the containing space; and an elastic energy storage part which is arranged in the containing space, wherein the elastic energy storage part is configured to be extruded and deformed by the slurry to store elastic potential energy when the slurry enters from the feeding port and release the elastic potential energy to extrude the slurry from the discharging port when the deformation is recovered. The material conveying transition mechanism is used for being arranged between a pumping device and a spray gun, receiving slurry output by the pumping device in a pulse mode each time, converting mechanical energy generated by slurry pumping pressure into elastic potential energy to be stored, and gradual