A device and method for measuring the angle of repose of bulk materials
A technology for bulk materials and measurement methods, which is applied in measurement devices, analytical materials, instruments, etc., can solve problems such as low precision and large human errors, and achieve good applicability, reduce measurement errors, and reduce errors.
Inactive Publication Date: 2020-01-31
HUAZHONG AGRI UNIV
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Problems solved by technology
[0008] The purpose of the present invention is to overcome the problems of low accuracy and large human error of the existing angle of repose measuring device, and propose a device and method for measuring the angle of repose of bulk materials
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Embodiment 1
[0064]A device for measuring the angle of repose of bulk materials, comprising a feeding unit 100, a stacking unit 200, an image acquisition unit 300 and a data processing unit 400, the described feeding unit includes a feeding funnel 110 and a funnel support 120, the feeding The funnel 110 is provided with a funnel valve 130 to control the opening and closing of the funnel mouth, and the funnel bracket 120 is provided with a vertical chute 121, and the feeding funnel is fixed on the funnel bracket 120 by the funnel fastening bolt 140 (feeding can be adjusted according to needs). the height of the funnel 110); the stacking part 200 is made up of a stacking base 210 and a stacking plate 220, the stacking base 210 is provided with a cross-shaped groove 211, and the corresponding stacking plate 220 has a cross-shaped protrusion 221. The protrusion 221 is embedded in the groove 211 to realize the radial fixation of the stacking plate 220 on the stacking base 210; the image acquisit...
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The invention belongs to the field of determination of parameters and in particular relates to a determination device and a determination method for a repose angle of a bulk material. The determination method comprises the following steps: acquiring an image of a bulk material accumulation body by utilizing a digital camera, acquiring an accumulation body profile curve by applying computer image processing, fitting profile curve extraction dots by adopting a Gaussian distribution function, and taking an acute angle included by a tangent line at an inflection point of a fitted curve and the horizontal axis as the repose angle of the bulk material. The special determination device comprises a feeding unit, a material piling unit, an image acquisition unit and a data processing unit, whereinthe feeding unit (100), the material piling unit (200), the image acquisition unit (300) and the data processing unit (400) are sequentially connected. The invention overcomes the defects that an existing repose angle determination device is low in result precision and big in personal error and provides a device and a method for determining the repose angle of the bulk material. The determinationdevice and the determination method which are provided by the invention have the advantages that determination result accuracy is high, error is small, a blanking funnel and a material piling flat plate can be replaced as required, and applicability on different bulk materials is good.
Description
technical field [0001] The invention belongs to the technical field of material parameter measurement, in particular to a device and method for measuring the angle of repose of bulk materials. Background technique [0002] Bulk materials are very common in daily production and life. In the natural state, loose bodies generally exist in the form of piles. The stability of the accumulation and the size of the space occupied should be paid attention to in the use of bulk materials. The angle of repose of bulk materials generally refers to the maximum angle formed by the slope of the accumulation body and the horizontal plane in the natural accumulation state of the bulk material. The angle of repose of bulk materials is closely related to the properties of the bulk itself. The research on the angle of repose of bulk materials is of great significance to the study of properties, production and transportation, and safe use of bulk materials. [0003] At present, in the large ...
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IPC IPC(8): G01N11/00G01N15/00
CPCG01N11/00G01N15/00
Inventor 袁巧霞罗帅曹红亮易宝军牛文娟李巍峰徐超
Owner HUAZHONG AGRI UNIV