Particle material metering device

Abstract

The invention relates to a particle material metering device. The metering device comprises a casing and a roller arranged in the casing, the casing is provided with a feed port and a discharge port, the roller comprises a roller body and a driving shaft, and the roller is mounted on the casing via the rotating shaft; the roller comprises two side plates and a squirrel-cage-type skeleton arranged on the side plates; the squirrel-cage-type skeleton is provided with a groove drum, a metering groove is arranged in the external of the groove drum, and the groove drum is made of a microporous ventilating material; and the side plates and the groove drum form a sealed cavity; one end of the rotating shaft is provided with a deceleration motor, the other end of the rotating shaft is provided with a rotating joint, the driving shaft is internally provided with a blind hole, an air channel through which the blind hole is communicated with the cavity is arranged in the driving shaft, the rotating joint comprises a fixed end and a hollow rotation shaft, and the hollow rotation shaft is connected with the rotating shaft, and enables that the rotating joint is communicated with the blind hole. The particle material metering device has the advantages that the material does not stick to the metering groove, and metering accuracy is further ensured.

Description

technical field [0001] The invention relates to the technical field of granular material metering and batching, in particular to a granular material metering device. Background technique [0002] The measurement of granular materials is used in many industries, such as grain and oil, brewing, chemical industry, fertilizer and other production and processing industries. It is necessary to accurately measure granular materials. Common such granular materials generally have a certain particle size, such as a particle size of 0.1 ~3 mm. The measurement technology of granular materials is mostly used in the packaging process. Generally, a given amount of material needs to be output, and a large number of repeated measurements are required. Under such working conditions, it is better to use a standard volume for measurement. The current metering form mostly uses metering scales. For example, in the equipment such as blending fertilizers and fertilizers, the granular materials are...

AI Technical Summary

Problems solved by technology

Theoretically, the metering sheave will completely digitize the metering, which should be more accurate than the general metering scale, but in fact, there are still the following problems in the metering through the conveying sheave: First, if the materials in the metering tank cannot be completely discharged every revolution, Random accumulation will occur, which will affect the measurement accuracy; second, most materials usually have strong hygroscopicity and contain high moisture content, usually at 3% to 8% moisture content, such as fertilizers, etc., which will easily cause the measurement tank to be damp , and then aggravate the sticky material. As a result, the measurement error is too large, or even impossible to measure, which is far from the theoretical accurate measurement; this is also the biggest obstacle that the current measurement sheaves cannot be used for accurate measurement.

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