The application discloses a portable grinder, which belongs to the technical field of household appliances and specifically relates to a portable grinder which comprises an upper shell, a
grinding part arranged at the lower end of the upper shell, and a lower cup body. The
grinding part comprises a driving shaft rotatably connected to the lower end of the upper shell, a conical head fixedly connected to the lower end of the driving shaft, and a
grinding blade fixedly connected to the lower end of the conical head. A driving motor is fixedly connected to the inside of the upper shell, and the output shaft of the driving motor is fixedly connected to the driving shaft. The conical head is arranged on the driving shaft, and the conical head is located above the grinding blade. When the material moves and falls in the lower cup body, the conical
head first receives the falling material. The
conical surface of the conical head disperses the material to all directions, guides the material to be evenly spread in the radial direction, and then the material falls on the lower grinding blade, so that the direct
impact on the center of the blade (usually the most fragile or stress-concentrated area) is reduced, the connection between the blade and the transmission shaft is protected, the service life of the blade is prolonged, and the
failure risk is reduced.