Automatic control and continuous freezing grinding machine

A freeze-grinding and grinding device technology, applied in the grinding field, can solve the problems of low utilization rate of coolant, inability to continuously freeze-grind, limited scope of application, etc., and achieve the effect of ensuring safe operation, clear structure and high grinding efficiency

Pending Publication Date: 2017-11-17
瑞绅葆分析技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 o

Method used

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  • Automatic control and continuous freezing grinding machine
  • Automatic control and continuous freezing grinding machine
  • Automatic control and continuous freezing grinding machine

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0071] Example 1 Grinding experiment at -170℃

[0072] 500g of ground candied dates. Food size: 10-20mm; grinding box volume: 1200ml; grinding component mass: 16kg; spacer material: polytetrafluoroethylene; eccentric mass: 11kg; spiral tube material: polytetrafluoroethylene, freezing medium: liquid nitrogen; freezing Time 40min, grinding speed 1300r / min, grinding 2min product size: ≤0.01mm.

Example Embodiment

[0073] Example 2 Grinding experiment at -170℃

[0074] Grind 500ml glutinous rice balls. Food size: 10-20mm; grinding box volume: 1200ml; grinding component mass: 16.5kg; spacer material: polytetrafluoroethylene, eccentric wheel mass: 12kg; spiral tube material: polytetrafluoroethylene, freezing medium: liquid nitrogen; Freezing time 20min, grinding speed 1350r / min; product size obtained by grinding 2min: ≤0.01mm.

Example Embodiment

[0075] Example 3 Carry out a -100℃ grinding experiment

[0076] Grind jujube and walnut 2kg. Food size: 10-20mm, grinding box volume: 3000ml; grinding component mass: 17.5kg; spacer material: polytetrafluoroethylene; eccentric wheel mass: 16kg; spiral tube material: polytetrafluoroethylene; freezing medium: liquid nitrogen; The freezing time is 20min, the grinding speed is 1300r / min, and the grinding is 2min to obtain the size of the product: ≤0.07mm.

[0077] From Example 1 to Example 3, it can be seen that the grinding temperature of the refrigerated grinder of the present invention can be reduced to -170°C, the amount of ground raw materials is greatly increased, and the grinding efficiency is high. For tough raw materials, it can be ground in 2 minutes. Get small particle size products.

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): B02C15/00B02C19/16B02C19/18B02C23/00B02C25/00
CPCB02C15/00B02C19/16B02C19/186B02C23/00B02C25/00
Inventor 刘文华高峰
Owner 瑞绅葆分析技术(上海)有限公司
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