Gas-liquid combination-type stroke regulation system for metering pump

The invention discloses a gas-liquid combination-type stroke regulation system for a metering pump, and relates to the technical field of metering pumps. The problems of potential safety hazard and regulation hysteresis quality due to manual regulation in the prior art can be solved. The gas-liquid combination-type stroke regulation system for the metering pump comprises a stroke control part and a regulation execution part, wherein the stroke control part comprises a signal input end access control signal, a power air source locator and a stroke feedback rod; the power air source distribution output end of the locator is respectively connected with a first auxiliary cylinder and a second auxiliary cylinder; and the stroke feedback rod is respectively connected with the locator and a piston rod. According to the gas-liquid combination-type stroke regulation system for the metering pump, the traditional industrial gas source is utilized and is combined with internal hydraulic oil to carry out pressure conversi