Flow-variable circulating pump set

The utility model discloses a variable flow circulating pump set which comprises an electric control cabinet, a pump set base, a plurality of groups of adjusting branches and a group of bypass branches, the adjusting branches and the bypass branches are arranged on the pump set base, a water inlet main pipe and a water outlet main pipe are respectively arranged at the top ends of the adjusting branches and the bypass branches, and the adjusting branches comprise water inlet branch pipes, circulating water pumps and water outlet branch pipes. The top end of the water inlet branch pipe is communicated with the water inlet main pipe, the water inlet main pipe is provided with a water inlet side flange butterfly valve and a water inlet side flexible connector, the top end of the water outlet branch pipe is communicated with the water outlet main pipe, the water outlet main pipe is provided with a water outlet side flexible connector, a noise elimination check valve and a water outlet side flange butterfly valve,