Cylinder type separation test device for non-uniform bed load particles and test method of device

Abstract

The invention provides a cylinder type separation test device for non-uniform bed load particles. A transparent cylinder is used for accommodating spherical glass beads with different particle sizes required for a test, axial displacement is restrained on one side through a thrust bearing, and a protective cover is mounted at the top; a drive motor is arranged on the upper side of the transparentcylinder, and rotation of the transparent cylinder is driven by gear transmission; laser beams emitted by a laser penetrate a round section of the transparent cylinder in a form of laser plane, and the section illuminated in the transparent cylinder by the laser beams is a shooting area of a high-speed camera; the high-speed camera is used for shooting displacement characteristics of the sphericalglass beads on the section irradiated by the laser, and is connected with a computer through a data line for storing shot images. Diffusion and separation physical processes of non-uniform bed load are simplified, and influence of disturbance terms except particle size in a test process is reduced, so that more regular test data is obtained for supporting theoretical research.

Description

technical field [0001] The invention relates to the field of mass movement, and relates to a drum-type non-uniform mass particle sorting test device and a test method thereof, which are used for simulating the diffusion characteristics of non-uniform mass particles and the sorting laws of mass mass with different particle sizes. Background technique [0002] The diffusion and sorting characteristics of the transport material have important influence on the bed deposition and sand slope formation of the estuary. The surface layer of the river bed is usually a coarse layer, while the fine-grained mass is usually deposited to the bottom of the river bed, but people have very limited understanding of the formation mechanism of this universal law in nature. [0003] In order to understand the formation mechanism of this natural feature, the researchers established a physical model test of similar scale, using particles of different particle sizes to simulate the non-uniform movin...

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Problems solved by technology

[0007] In order to overcome the shortcomings of complex physical process and poor effectiveness of non-uniform mass diffusion and sorting in the prior art, the present invention provides a drum-type non-uniform mass particle sorting test device and its test method, aiming at different Particle size mass separation design test device, simplify the physical process of non-uniform mass diffusion and sorting, reduce the influence of other interference items except particle size in the test process, so as to obtain more regular test data used to support theoretical research

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