Coal sample pulverizing equipment

Abstract

The invention provides coal sample pulverizing equipment, comprising an inner cavity, an inner cavity forced cooling system, a sleeve and a cylindrical wall forced cooling system, wherein the inner cavity is communicated with a cutting pulverizer through a pulverizer main pipeline; the inner cavity forced cooling system is used for supplying cool air to the inner cavity; the sleeve sleeves the outer wall of the cutting pulverizer, and forms a cooling cavity for containing air with the outer wall, and the cylindrical wall forced cooling system is communicated with the cooling cavity through a cylindrical wall cooling branch. According to the coal sample pulverizing equipment, the inner cavity and the outer wall of the cutting pulverizer are subjected to forced cooling so that air temperature of the inner cavity and temperature of parts such as a liner and a blade, and temperature of the outer wall of the pulverizer can be reduced, service lives of the parts can be prolonged, oxidation of lignite is suppressed, and relevant bias of coal samples is avoided.

Description

technical field [0001] The invention relates to the technical field of coal sample preparation equipment, and more specifically, relates to a coal sample pulverization equipment. Background technique [0002] With the rapid development of my country's economic construction, the market demand for coal pulverization equipment is increasing. [0003] At present, a new type of pulverizing equipment-air suspension cutting pulverizing equipment has appeared on the market. It adopts the processing method of cutting pulverizing in the airflow, and relies on negative pressure to make the coal sample be processed by blades in the airflow being transported. Cutting broken. The air-suspension circulation pulverizing equipment has the advantages of high moisture adaptability, less coal sample residue, good dust control effect, and little impact on coal quality, and has been widely used in the field of coal processing. [0004] However, there are still some problems in the air-suspensio...

AI Technical Summary

Problems solved by technology

[0004] However, there are still some problems in the air-suspension circulation pulverizing equipment, for example: when the ambient temperature is as high as 25°C, the cooling effect of the airflow is greatly reduced; Accumulated on the lining board and cutting outer cylinder, resulting in high heat generation on the lining board and cutting outer cylinder; high heat leads to obvious oxidation of lignite, which is likely to cause substantial deviation in the pulverization process

The above three problems are all caused by the untimely cooling of the inner cavity, lining board and outer cylinder of the air-suspension circulation pulverizing equipment.

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