A device of measuring the water content of a granular material based on capacitance
A granular material and capacitance technology, applied in the direction of material capacitance, etc., can solve the problems of difficult to meet the measurement requirements of abrasive media, large measurement errors, hidden dangers of concrete engineering quality, etc.
Inactive Publication Date: 2016-06-08
XINJIANG KELI MACHINERY EQUIP
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[0003] However, so far, no reliable online moisture measurement system suitable for abrasive media (such as sand and gravel) has been found in China. Conventional moisture measurement devices are greatly affected by temperature and ambient humidity, and the measurement error is large, which is difficult to meet the requirements of grinding. Continuous and precise moisture measurement requirements for non-reactive media make it difficult to accurately control the product quality in the large-scale commercial concrete production process, which brings certain quality hidden dangers to concrete projects
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[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.
[0019] like figure 1 , 2 , 3 and 4, the technical scheme of the present invention is realized by the following measures. A device for measuring the moisture of granular materials based on electric capacity mainly includes a standard sample moisture measuring system installed on the storage tank 11 and a device to be measured. Material moisture measurement system; the standard sample moisture measurement system is integrally installed on the standard measurement mounting seat 17 outside the discharge tank 11, including a standard moisture measurement sensor 13 and a compensation temperature sensor 14, one end of the standard temperature sensor 15 is at the standard sample moistur...
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The invention provides a device of measuring the water content of a granular material based on capacitance, belongs to the field of water measurement and particularly relates to a device of measuring the water content of a granular material based on capacitance. The device effectively overcomes the difficult problem of online water content measurement for abrasive materials, allows the water content of gravel aggregate in a material blending and stirring step which is a critical step of large-scale commercial concrete production to be controllable accurately, allows water content measurement to be reliable for a long period, and makes production stable. The device mainly comprises a standard sample water content measuring system mounted on a storage tank and a water content measuring system for a material to be measured.
Description
technical field [0001] The invention relates to the technical field of material moisture measurement, and is a device for measuring the moisture content of granular materials based on capacitance. Background technique [0002] In large-scale commercial concrete production, the concrete ratio design is based on powdered cementitious materials (such as cement, activated slag powder, fly ash), various aggregates (such as natural sand, river sand, quartz sand, machine-made sand, pebbles, ceramsite, etc.), water and admixtures are designed in the correct proportions and mixed thoroughly. Among them, the largest amount of aggregate is sand and stone, especially sand. If the water content of sand and stone is reduced by 2%, the batching system will mistakenly increase the amount of sand and stone by 2% and add less water, resulting in the drying of concrete production and mixing. , or even insufficient mixing, affecting the quality of concrete. In this case, if the operator adds ...
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Inventor 王建军
Owner XINJIANG KELI MACHINERY EQUIP