The present invention discloses a sample dispenser with accurate, stable and uniform sample addition, and belongs to the technical field of
in vitro diagnostic equipment. The sample dispenser of the present invention comprises a mainframe, a conveying device located on the mainframe, a sample addition platform located on the conveying device, a sample addition device located on the sample addition platform, a
metering pump tower connected to the sample addition device through a pipeline, and a control device electrically connected to the mainframe, the conveying device, the sample addition device and the
metering pump tower respectively, wherein the sample addition device comprises a liquid adding seat, a motor located above the liquid adding seat, an output shaft fixed to the lower part of the motor, a stirring seat fixed below the liquid adding seat, a stirring
brush head placed on the stirring seat, and a sample addition needle passing through the center of the liquid adding seat and the stirring
brush head in sequence, the liquid adding seat has a through hole, and the output shaft passes through the through hole and is transmission-connected to the stirring
brush head. The sample dispenser provided by the present invention can complete multiple operations such as
liquid injection,
coating,
reflux and cleaning, which is convenient, fast, time-saving and labor-saving, and meets the needs of accurate, stable and uniform sample addition.