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A grain porosity measuring device and its measuring method

A measuring device and porosity technology, which are applied in the field of grain porosity measuring devices, can solve the problems of large error in measurement results, error in measurement results, etc., and achieve the effects of convenient operation, reduction of measurement cost, and reduction of workload.

Inactive Publication Date: 2015-07-29
SOUTH CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Due to the hygroscopicity of grains, when water is used as a solvent, there will be a large error in the measurement results; when organic solvents are used, due to the strong volatility of organic solvents, especially at relatively high temperatures, they volatilize faster, which not only affects reliability And the measurement results also have a large error

Method used

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  • A grain porosity measuring device and its measuring method
  • A grain porosity measuring device and its measuring method
  • A grain porosity measuring device and its measuring method

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with drawings and embodiments.

[0032] Such as figure 1 and figure 2 A grain porosity measuring device shown includes an air compressor 3, a pipeline, an intake valve 4, a cylinder 1, an exhaust valve 5, a grain container, an air pressure measuring device 6 and a control display device, and the cylinder 1 passes through the pipeline Be respectively connected with air compressor 3 and grain container 2, described inlet valve 4 is installed in the pipeline between air compressor 3 and cylinder 1, and described exhaust valve 5 is installed in the pipeline between grain container and cylinder 1; The air pressure measuring device 6 is installed on the cylinder 1, and the air pressure measuring device 6 is connected with the control display device; the intake valve 4 and the exhaust valve 5 are both connected with the control display device. The air compressor is preferably a TYW-1 type low-noise, oil-fr...

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Abstract

The invention discloses a grain porosity measurement apparatus, which comprises an air compressor, pipelines, a gas inlet valve, a gas cylinder, a gas exhaust valve, a grain container, a pressure measurement device and a control display device, wherein the gas cylinder is respectively connected with the air compressor and the grain container through pipelines, the gas inlet valve is installed on a pipeline between the air compressor and the gas cylinder, the gas exhaust valve is arranged on a pipeline between the grain container and the gas cylinder, the pressure measurement device is arranged on the gas cylinder, and is connected with the control display device, and the gas inlet valve and the gas exhaust valve are connected with the control display device. The invention further discloses a measurement method of the grain porosity measurement apparatus. According to the present invention, the structure is simple, operations are convenient, and workload is reduced; and the used medium is air so as to avoid influence of grain moisture absorption or organic solvent volatility, increase measurement result accuracy, and ensure measurement result reliability.

Description

technical field [0001] The invention relates to the technical field of porosity detection, in particular to a grain porosity measurement device and a measurement method thereof. Background technique [0002] Porosity is an important physical characteristic of grain, and an important parameter in grain drying, processing, storage, ventilation system design, and research on airflow and heat flow movement. It is the ratio of the volume of pores between grains to the volume of the whole grain containing the pores, and it is related to many factors such as grain shape, stacking or filling method, grain size distribution, type and quantity of impurities, surface properties and water content, etc. . The size of the porosity of the bulk material is usually calculated according to the bulk density of the bulk material, the relationship between the relative density of the material and the porosity, and the calculation formula is where ε is the porosity, ρ ω is the relative density...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
Inventor 李长友麦智炜
Owner SOUTH CHINA AGRI UNIV
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