Differential rotating type wet screening instrument

Abstract

The invention discloses a differential rotating type wet screening instrument, and belongs to the technical field of coal sample screening. The instrument comprises a base, wherein a water collectinglayer is arranged at the upper part of the top part of the base; a wet screening layer is arranged on the top part of the water collecting layer; a driving mounting rack, a hollow rotating shaft, a water feeding pipe, a driving motor and a bevel gear set are fixedly connected to the center of the top part of the base; the wet screening layer comprises an outer wall barrel; a planetary gear set comprising a sun gear, a planetary wheel, planet carriers and an inner gear ring is arranged in an inner chamber of the outer wall barrel; the planet carriers at the upper side and the lower side of theplanetary wheel are fixedly connected to the inner sidewall of the outer wall barrel through connecting rods; a hollow extending shaft is fixedly inserted through the middle part of the sun gear; a screening net device fixedly sleeves the outer wall of the inner gear ring; spraying devices are arranged at the upper side and the lower side of the screening net device; and the spraying devices fixedly sleeve the outer wall of the hollow extending shaft. The differential rotating type wet screening instrument is high in screening efficiency, and capable of independently defining and screening bystages, inhibiting flying dust, and easily screening.

Description

Technical field

[0001] The invention relates to the technical field of coal sample screening, in particular to a differential rotating wet sieving instrument. Background technique

[0002] In order to effectively link theoretical research and engineering practice, laboratory research has become an important means for coal mine researchers to conduct theoretical research. As the research object, the form of coal in the laboratory is mainly raw coal, crushed coal, pulverized coal, etc. Among them, in order to meet the needs of theoretical research and engineering index determination, it is often necessary to use pulverized coal or even pulverized coal of different particle sizes in experiments. research. For example, the industrial analysis of coal, the production of briquette, and the determination of various other coal properties require sampling according to certain particle size standards. The chemical test of coal requires coal samples of a certain particle size for testing....

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