Coal rock sample crushing and grinding device

By designing the pretreatment chamber, crushing chamber and grinding chamber of coal rock sample crushing and grinding device, combining the first-stage crushing, second-stage crushing and grinding processes, the problems of dust generation and tool wear in existing equipment during crushing and grinding are solved, and a more efficient and safe coal sample treatment is achieved.

CN119680676AInactive Publication Date: 2025-03-25GENERAL PROSPECTING INSTITUTE OF CHINA NATIONAL ADMINISTRATION OF COAL GEOLOGY
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Patent Information

Application Number
CN202510205983.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing coal rock sample crushing and grinding equipment will generate a large amount of dust during the crushing and grinding process, affecting the health of the operators. At the same time, the wear of the grinding tools is large and the efficiency and safety are insufficient.

Method used

A coal rock sample crushing and grinding device is designed, including a pretreatment chamber, a crushing chamber and a grinding chamber. Through a combination of primary crushing, secondary crushing and grinding, the particle size of the coal sample is gradually reduced, and dust generation is reduced through the spraying device.

Benefits of technology

Effectively reduces the generation of dust, improves the efficiency of crushing and grinding, reduces the health risks to operators, and reduces wear of grinding tools.

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Abstract

The invention relates to a coal rock sample crushing and grinding device which comprises a pretreatment chamber, a crushing chamber and a grinding chamber from top to bottom, the top of the pretreatment chamber is provided with a feeding port and a spraying device, the interior of the pretreatment chamber is provided with a rotatable crushing hammer I, and the space between the crushing hammer I and the inner wall of the pretreatment chamber is a treatment space; materials input from the feeding port enter the treatment space and are subjected to primary crushing treatment of the first crushing hammer, and the width of the treatment space is gradually reduced from top to bottom. Two second breaking hammers and a treatment cavity are arranged in the breaking chamber, hammer heads of the two second breaking hammers point to each other, the two hammer heads are located in the treatment cavity, and materials discharged from the pretreatment chamber enter the treatment cavity and are subjected to secondary breaking treatment through the two second breaking hammers; a third breaking hammer is arranged in the grinding chamber and used for grinding the materials.
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