Stacking forming funnel for test of oxidation combustion characteristics of solid dangerous goods

Abstract

The invention discloses a stacking forming funnel for a test of oxidation combustion characteristics of solid dangerous goods. The stacking forming funnel comprises five layers of modules stacked from bottom to top, a truncated-cone-shaped through hole is formed in the center of each of the lower four layers of modules, the truncated-cone-shaped through holes are arranged from large to small from bottom to top, a conical counter hole is formed in the center of the five layer of module and communicated with all the truncated-cone-shaped through holes, and the holes are combined to form a conical funnel hole. The stacking forming funnel not only realizes bottom surface consistent stacking forming of tested mixtures with inconsistent volumes, but also realizes consistency of stacking forming of the tested mixtures with the same volumes under the condition that the overall funnel cannot be filled with the tested mixtures in volume, and accordingly, the reproducibility of the test of the oxidation combustion characteristics of the solid dangerous goods is guaranteed, and a forceful guarantee is provided for the strict test of the oxidation combustion characteristics of the solid dangerous goods according to requirements; besides, the stacking forming funnel is simple in structure and low in cost and can realize direct output through 3D printing.

Description

technical field [0001] The invention relates to an experimental device, in particular to a stacking forming funnel used for testing the oxidative combustion characteristics of solid dangerous goods. Background technique [0002] Section 34 of Part III of the United Nations Recommendations on the Transport of Dangerous Goods Manual of Experiments and Criteria specifies the combustion test method for the classification of oxidizing solids. The potential for burning rate and burning intensity are used to determine the classification of oxidizing solids and assign the corresponding packing group. The test requires a mixture of 30.0g±0.1g of the test substance and dry cellulose filaments to be tested, and the mixture is composed of the test substance and cellulose in a mass ratio of 1:1 and 4:1. The combustion characteristics of the mixture are compared with the standard mixture, that is, 30.0g±0.1g of potassium bromate and cellulose in a mass ratio of 3:7. If the burning time ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a stacking forming funnel for the test of the oxidative combustion characteristics of solid dangerous goods, so as to meet the requirements of the United Nations Recommendations on the Transport of Dangerous Goods and the test of the oxidative combustion characteristics of solid dangerous goods in the standard manual. In order to meet the requirements of stacking the mixture of the tested object in the method, the present invention avoids the inconsistency of undercut molding when the mixture cannot fully fill the funnel by adopting the bottom-up filling method, and greatly improves the classification of oxidative solids. Assay Accuracy and Reproducibility

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