Powder storage metering device and powder metering method

The invention provides a powder storage metering device and a powder metering method, and relates to the technical field of concrete equipment. The powder storage metering device comprises a stock bin used for storing powder, a metering assembly, a conveying hose, a powder conveying mechanism and a distance sensor; the metering assembly comprises a metering cylinder, a push rod component, a nut component, a power source, a discharging baffle, a switching mechanism and an electric control valve. According to the technical scheme, the size of falling powder can be controlled, then the mass of the falling powder is controlled, and the powder storage metering device and the powder metering method has the following technical effects that firstly, a weighing sensor does not need to be arranged on the periphery of a weighing box, the metering cylinder can be arranged to be cylindrical and is easy to arrange in space, the influence on other parts is small; and space utilization of the whole equipment is facilitated.