Solid density meter

The utility model discloses a solid density meter. The solid density meter comprises a base, a fixing column, a slide bar, a spring, a balance arm, a gear and a loading container, wherein the slide bar is arranged in the fixing column in a sliding manner, the sliding bar is composed of a horizontal bar and a vertical bar, a sliding sleeve sleeves the horizontal bar in a sliding manner, the lower end of the spring is fixed on the sliding sleeve, and the upper end of the vertical bar is provided with a rack A meshed with the gear; the balance arm is fixed on the fixing column by one supporting point, the loading container is fixed at the left end of the balance arm, the right end of the balance arm is provided with a vernier, the upper end of the spring is fixed on the vernier, three piston cylinders are arranged at the upper end of the loading container, a piston core rod A, a large piston core rod and a piston core rod B are arranged in the three piston cylinders in a matching manner respectively, the upper end of the piston core rod B is provided with a rack B meshed with the gear, and the gear is located between the rack B and the rack A. The solid density meter has a simple structure, and is low in cost and strong in practicability, and can be used for measuring the density of solid to be tested at a time.