Well cementation cement slurry blending device with cleaning function

The utility model discloses a well cementation cement slurry blending device with a cleaning function, and belongs to the technical field of exploration. Comprising a metering tank, a water supply pump, a filter, a flowmeter, a mixer, a slurry mixing tank, a circulating pump, a densimeter, a plunger pump, a cleaning pipeline, an injection pump and a cleaning bypass, the metering tank is connected with the mixer through a water supply pipeline, a water supply pump, a first control valve, a filter and a flowmeter are arranged on the water supply pipeline, and the slurry mixing tank is connected with the circulating pump; the circulating pump outputs in two paths, one path is connected with the plunger pump through a grouting pipeline, and the other path is connected with the mixer through a backflow pipeline; a second control valve is arranged on the grouting pipeline, and a densimeter and a third control valve are arranged on the backflow pipeline; one end of the cleaning pipeline is connected with the meterin