Milling structure of environmental protection and energy-saving vortex pulverizer

Abstract

The invention discloses a powder grinding structure of an environment-friendly and energy-saving type eddy current pulverizer. The powder grinding structure comprises a grinding chamber, a rotating body arranged in the grinding chamber, and a plurality of grinding blocks which are circumferentially and uniformly distributed on the peripheral surface of the rotating body, wherein sides of the grinding blocks along the rotation direction are positive pressure surfaces, other sides of the grinding blocks are negative pressure surfaces, and when being viewed from the rotation direction, the positive pressure surfaces are at the front part, and the negative pressure surfaces are at the rear part; a negative pressure plate is arranged on each negative pressure surface, and a certain gap is reserved between the surface of the negative pressure plate opposite to the negative pressure surface of the grinding block and the negative pressure surface of the grinding block. When the rotating body drives the grinding blocks to rotate at high speed, eddy current produced by the intersection of produced air flow perpendicular to the tangent direction and air flow produced in the radial circumferential direction by the pressure difference between the positive pressure surfaces of the grinding blocks and the negative pressure plates acts on the working surface of the grinding chamber, as the speed of the air flow produced in the radial circumferential direction by the pressure difference between the positive pressure surfaces and the negative pressure plates is very high, materials in the grinding chamber produce intense collision and autogenous grinding under the action of high-speed and high-strength eddy current so as to achieve effective grinding.

Description

technical field [0001] The invention relates to the technical field of powder engineering, in particular to a grinding structure of an environment-friendly and energy-saving vortex pulverizer for superfine pulverization of various materials. The grinding structure is not only used in cutting-edge fields such as military industry and aerospace, but also widely used in different industries, such as chemical industry, electronics, machinery, metallurgical building materials, plastics, rubber, food, medicine, papermaking, daily chemical, energy, environmental protection , ultra-fine processing of non-metallic materials and other related industries. Background technique [0002] Ultrafine powder technology is called a cross-century high-tech by domestic and foreign scientific and technological circles. [0003] With the rapid development of science and technology, the research and application of ultrafine materials and nanomaterials has broad application prospects and plays an e...

AI Technical Summary

Problems solved by technology

There is also a fluidized bed jet mill of Beijing Sanhuan Powder High-tech Company of the Chinese Academy of Sciences, and the material fineness d50 can only reach 2-40 microns

In addition, according to "ultrafine crushing and grading technology" (China Light Industry Press, published in 2001) literature report: the jet mill has the following problems: 1, large energy consumption, low production efficiency

2. The output is less, generally no more than 100kg / h, most of which are less than 50kg / h

3. It is still difficult to prepare superfine powder

4. The structure of jet mill is complex and expensive

However, the double negative pressure worm gear needs a higher speed, so the requirements for the strength of the motor, blades, and impact tooth plate are very high, and the energy consumption is also high.

In addition, the structure of the double negative pressure worm gear is also relatively complicated.

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