Dry mill

Abstract

The invention discloses a dry mill. The dry mill comprises a cylinder body, stirrers driven by motors, a supporting frame for fixing the motors and the stirrers, and a cooling system, wherein at leastthree stirring cavities which are arranged in a quincunx shape are formed in the cylinder body, the stirring cavities are provided with feeding pipes, and the supporting frame is fixed above the cylinder body; the stirrers extend into the stirring cavities, the stirrers comprise stirring shafts, shaft sleeves and stirring rods, the stirring shafts are hollow shafts, and the shaft sleeves are arranged on the stirring shafts in a sleeving mode and are connected with the stirring shafts in a clamped mode; and the cooling system involves a central water cavity, the central water cavity is formedin the center among the stirring cavities which are arranged in a quincunx shape in the cylinder body and is isolated from the stirring cavities, the bottom of the central water cavity is provided with a water inlet communicating with a water source, and the upper part of the central water cavity is provided with a drainage opening communicating with a drainage pipe. The high temperature of the stirring cavities is effectively controlled, and the property of materials is prevented from being changed due to high temperature, so that material detection data are accurate, product research and development are facilitated, and use is convenient.

Description

technical field [0001] The invention relates to mining equipment, in particular to a dry mill. Background technique [0002] The cylinder of the currently used vertical grinding equipment is equipped with blade-type stirring devices and ball media, such as ceramic balls, glass balls, steel balls, etc. The rotation of the stirring device makes the ball media rotate, thereby producing impact and grinding effects to grind the materials . [0003] Currently used vertical grinding equipment, such as the Chinese patent No. 2019222968906, named vertical grinding machine, although the resistance of the ball medium movement is small and the efficiency of grinding materials is high, but when the grinding materials are viscous In the case of slime or mud, the grinding material and the ball media are bonded into agglomerates, resulting in low work efficiency and high energy consumption. [0004] Secondly, during the movement of the rotating ball medium of the stirring device, the wear...

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Problems solved by technology

[0003] Currently used vertical grinding equipment, such as the Chinese patent No. 2019222968906, named vertical grinding machine, although the resistance of the ball medium movement is small and the efficiency of grinding materials is high, but when the grinding materials are viscous In the case of slime or mud, the grinding material and the ball media are bonded into agglomerates, resulting in low work efficiency and high energy consumption

[0004] Secondly, during the movement of the rotating ball medium of the stirring device, the wear between the ball medium, the grinding material and the stirring device is large, resulting in damage to the blades of the stirring device, short service life and high use cost

[0005] Thirdly, when the grinding material of the mill is dry material, the friction between the ball medium, the grinding material and the stirring device causes the high temperature of the grinding material, usually reaching above 180 degrees Celsius, thus changing the properties of the material, resulting in inaccurate experimental data and hindering Product development, inconvenient

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