Powder crushing method and device

Abstract

The invention discloses a powder crushing method and device. The device comprises a roller obliquely arranged downwards in the feeding direction, a crushing spindle and a crushing motor driving the crushing spindle to rotate. The roller comprises a roller body, a feeding device, a discharging device and a rolling motor driving the roller body to rotate, wherein the feeding device and the discharging device are arranged at the two ends of the roller body. The crushing spindle extends into the roller body and is axially parallel to the roller. A plurality of crushing needles are arranged on the crushing spindle and used for crushing powder. The crushing needles are evenly distributed on the crushing spindle in a surrounding mode at intervals. When the crushing needles rotate to the powder in the roller body, the length of the crushing needles are set in the mode that the crushing needles exactly make contact with the coarse powder on the upper layer and do not make contact with the fine powder on the lower layer. When the roller rotates, the coarse powder and the fine powder are separated into the upper layer and the lower layer, due to the fact that the length of the crushing needles are set in the mode that the crushing needles exactly make contact with the coarse powder on the upper layer and do not make contact with the fine powder on the lower layer, the fineness of the crushed coarse powder and the fine powder are more uniform, the fine powder is not subjected to secondary crushing, the specification of the fine powder is ensured, and the quality of finished ceramics is improved.

Description

Technical field

[0001] The invention relates to the technical field of pulverization, in particular to a method and device for pulverizing powder. Background technique

[0002] In the field of ceramics, ceramic powders are often used in the production of ceramics. After the initial production of ceramic powders, there will be powders of different sizes, and the large-particle powders are unqualified. Then the ceramic powder needs to be adjusted during the manufacturing process. The material is crushed to make the coarse and fine powder more uniform. At this time, a powder grinder is required to pulverize the powder; however, the existing grinder basically directly uses a roller to crush powders of different sizes together, which is easy to cause fine powder The secondary pulverization of the material will make the fine powder material become finer, reduce the fluidity of the powder material, and thus reduce the quality of the finished ceramic. Summary of the invention

[0003] In...

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