Spray drying device for producing vitamin K2

The invention relates to a spray drying device for producing vitamin K2, which comprises a tank body, the upper part of the tank body is provided with a liquid inlet pipe orifice, and the end part of the tank body is provided with a spray head; the tank body comprises a first cavity section, a second cavity section, a third cavity section, a fourth cavity section, a fifth cavity section and a sixth cavity section, the tank body is provided with a hot air inlet pipe, and the position of the hot air inlet pipe is lower than that of the spraying head; each of the first cavity section, the second cavity section, the third cavity section and the fourth cavity section is in a hollow frustum shape with a large lower end opening and a small upper end opening; the fifth cavity section is in a hollow cylinder shape, and the sixth cavity section is in a hollow frustum shape with a small lower end opening and a large upper end opening; a detachable material blocking assembly is arranged at the bottom of the tank body, a