Automatic control and continuous freezing grinding machine

Abstract

The invention relates to a continuous freezing grinding machine. The grinding machine comprises a vibration grinding device and a compression device, the vibration grinding device comprises a grinding assembly, a vibration assembly and a supporting assembly, the grinding assembly comprises a compression roller, a grinding box and a spacer bush, the grinding assembly is compressed or released by the compression device, the grinding assembly is connected with the vibration assembly, and the grinding assembly and the vibration assembly are installed on the supporting assembly. The continuous freezing grinding machine has the beneficial effect that the grinding efficiency is high, hard and crisp samples can be ground to be smaller than 200 meshes within several minutes, and the one-time grinding amount can reach 2 kg to the maximum degree; and the grinding temperature scope is wide, and grinding within the temperature scope between the normal temperature and -170 DEG C can be achieved.

Description

technical field [0001] The invention relates to the technical field of grinding, in particular to an automatic control low-temperature grinding machine. Background technique [0002] In the experiment, it is necessary to crush and grind the samples to prepare experimental samples with fine particle size or even nanoscale. Generally speaking, the harder and brittle the material, the easier it is to grind and crush. However, not all materials are hard and brittle at room temperature, and some materials are inherently tough, viscous, and high-temperature sensitive. Especially in the grinding process, due to the high temperature environment brought by the grinding action, the material is easy to become soft, sticky, and deteriorated. Freezing can solve this problem very well. Under the action of low temperature, heat-sensitive substances, various animal and plant tissues, microorganisms, rubber, plastics, food, medicines, coal, oil shale, wax products, PE, Materials such as P...

AI Technical Summary

Problems solved by technology

[0006] The technical problem existing in the current prior art is that the ground sample is first frozen in a low-temperature medium, and then ground, which has problems such as inconvenient operation and inability to continuously freeze and grind; adopt a low-temperature planetary ball mill, and use an air-cooled compressor to refrigerate. When it is difficult to obtain a relatively low temperature, the scope of application is limited, and when the medium such as liquid nitrogen is used for direct on-line freezing, the utilization rate of the coolant is not high; the existing technology cannot meet the requirement of freezing in a single batch of more than 500ml Grinding capacity, most of them can only handle 10-100mL capacity

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