Solid density measurement platform based on spring balance

Abstract

The invention relates to a solid density measurement platform based on a spring balance. The solid density measurement platform can accurately measure the density of a solid by using Archimedes principle, and comprises a base, a liquid container, a solid fixing device, a spring scale, a spring scale fixing device and a bracket rod, wherein the liquid container is installed below the spring balanceand can move up and down along the bracket rod, the solid fixing device is a ball capable of being opened and closed and used for holding a to-be-measured solid, the spring balance and the spring balance fixing device are movably connected so as to replace spring balances with different measurement ranges, and the spring balance fixing device can move up and down along the bracket rod. The measurement method is simple, and comprises: 1, placing a measured solid in the solid fixing device, and measuring the mass M1 of the solid in the air; and 2, placing the measured solid in the liquid container filled with a liquid with a known density ([rho]2), measuring the mass M2 of the solid in the liquid, and obtaining the density of the solid through the Archimedes principle.

Description

Technical field [0001] This patent relates to the field of solid density measurement, in particular to a measuring platform for irregularly shaped solid density based on a spring balance. Background technique [0002] At present, the existing solid density measurement methods are basically divided into two types. One is the direct calculation method. For regular-shaped solids, the volume can be obtained according to the size, and then the mass can be weighed and the density calculation formula can be used to obtain the solid density. The volume of a regular-shaped solid cannot be calculated according to its size. The volume can only be measured by the drainage method, which leads to a large error in the volume measurement. The final density of the solid has a large error; the other is based on the Archimedes buoyancy principle to measure the density. The solid density measurement method is divided into two steps. The first step is to measure the mass of the measured solid in the ...

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Problems solved by technology

[0002] At present, the existing solid density measurement methods are basically divided into two types. One is the direct calculation method. For solids with regular shapes, the volume can be obtained according to the size, then the mass can be weighed and then the solid density can be obtained through the density calculation formula. For different The volume of regular-shaped solids cannot be obtained according to the size, and the volume can only be measured by the drainage method, which leads to a large error in volume measurement and a large error in the final solid density; the other is to measure density based on the principle of Archimedes buoyancy. The solid density measurement method is divided into two steps, the first step is to measure the mass M of the measured solid in the air 1 ; In the second step, put the measured solid into the known density ρ 2 The mass M of the measured solid is measured in the liquid 2 , and then calculate the solid density through the formula, this method is more complicated and inefficient when using an electronic balance to measure the solid mass

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