Grinding and weighing integrated sample preparation device

The invention discloses a grinding and weighing integrated sample preparation device, and particularly belongs to the technical field of laboratory sample preparation detection, the grinding and weighing integrated sample preparation device comprises a base, a slide rail column, a fixed connecting rod, an accommodating cylinder, a grinding mechanism, a driving mechanism and a weighing mechanism; the driving mechanism comprises a driving motor, a driving rod, a sliding rail frame, a first transmission wheel, a first traction rope, a second transmission wheel, a transmission belt, a third transmission wheel and a first torsional spring. The weighing mechanism comprises a slurry containing cylinder and a liquid through pipe, one end of the liquid through pipe is communicated with the slurry containing cylinder, and the other end of the liquid through pipe is communicated with the side end of the bottom fixing part. The sample grinding device has the advantages that the sample can be fully ground, and the ground