planetary ball mill with frequency control and gear drive

Planetary Ball Mill

The planetary ball mill is characterized by full functionality, high efficiency and low noise. 4 grinding jars can be placed at the same time to produce 4 kinds of sample materials at one time. This series of ball mills can be equipped with vacuum tanks to grind samples under vacuum. It is very suitable for research tasks such as in research institutes, universities and corporate laboratories, from the experimental end to the production end to verify the feasibility of mass production, as well as for routine tasks such as mixing and homogenization of soft, hard, brittle or fibrous materials.

Wet milling is used to obtain particles of up to 5 micrometers, as the surface of small particles tends to become charged and agglomerate, which makes dry milling difficult. The particles can be kept separate by adding liquids or dispersants.

To produce ultrafine particles of 100 nanometers or less by wet milling, nanoscale grinding, friction rather than impact is required. This can be achieved by using a large number of small grinding balls that have large surfaces and many friction points. It is recommended that the proportion of small grinding balls should be 60% in the grinding jar.

Features

1. Oil seal mute technology: all the planetary gears and bearings are sealed in an airtight box, and a certain amount of lubricating oil is poured into it before use, and the gears are immersed in lubricating oil when the planetary ball mill is running in working condition. Reduce the noise of gear transmission, more than 50% lower than the noise of ordinary planetary ball mill, extend the service life of more than 2 times.
2. PLC frequency conversion control, can set the time, speed and forward and reverse.
3. Adopting V type card holder to fix the grinding jar, which protects the safety of the operator.
4. Precision gear transmission is adopted.
5. Can place 2 or 4 grinding jars at the same time.
6. Can be dry grinding, wet grinding, vacuum grinding and vacuum atmosphere protection grinding.
7. Universal support feet are solid, universal wheels push running, fixing and moving are convenient and labor-saving.
8. Intelligent control safety switch, the door can be opened only when the ball mill is not rotating. Thus avoiding the risk of the grinding jar being thrown out if the door is opened when the ball mill is not stopped, and protecting personal safety.
9. The grinding effect can reach 0.1 micron.
10. With CE certificate.
11. Total timing range: 1 to 9999 minutes.
12. Intermittent timing range: 1 to 9999 minutes.
13. Time that can run continuously: 72 hours.

Working Principle

The grinding jar is mounted eccentrically on the sun wheel of the planetary ball mill. The sun wheel and the grinding jar move in opposite directions in the ratio of 1:2, and the grinding balls in the grinding jar are subjected to superimposed rotational motion, the so-called Coriolis force. The speed difference between the grinding balls and the grinding jar creates an interaction between friction and impact forces, which releases high kinetic energy. The interaction between these forces results in a high and very efficient material size reduction in planetary ball mills.

Application Areas

1. Agriculture: plant material, seeds, soil, tobacco, wood fiber
2. Biological: bones, hair, tissue paper ceramics and glass ceramic oxides, clay minerals, glass, hydroxyapatite, china clay, quartz sand, electronic ceramics, structural ceramics, piezoelectric ceramics, nano-materials, round ceramic capacitors, MLCC, thermistor (PTC, NTC), ZnO piezoresistor, dielectric ceramics, alumina ceramics, zirconium oxide ceramics, fluorescent powders, zinc oxide powders, cobalt oxide powders , Ni-Zn ferrite, Mn-Zn ferrite chemicals and plastics carbon fiber, catalysts, cellulose, pigments, paints, plastics, polymers.
3. Building materials: soap clay, cement slag, polymers, gypsum, sand, stone.
4. Environmental research: mixtures, electronic debris, sludge, waste.
5. Minerals and metallurgy and metal electronics: alloys, coal, coke, iron ore, metal oxides, quartz, sub-precious stones, slag, magnetic materials, lithium cobaltate, lithium manganese, catalysts, phosphor, long afterglow luminescent powders, rare-earth polishing powders, electronic glass powders, fuel cells, zinc oxide piezoelectric resistors and so on.

Grinding Jars and Grinding Balls

1. The grinding jar adopts refined mold or high-precision polishing, the inner and outer wall smoothness is very high, and the bottom adopts difficult large R angle design, which can effectively reduce the phenomenon of material sinking in the grinding process. The mouth of the grinding jar adopts a more ergonomic gripping step to prevent the hand from slipping and make it more convenient to pick up and put down the grinding jar.
2. Grinding jar material: zirconium oxide, silicon oxide, onyx, carbide, stainless steel, high chromium steel, nylon, polyurethane, polypropylene pp, polytetrafluoroethylene, alumina and so on.
3. Grinding jar volume: 0.1L, 0.25L, 0.5L, 1L, 1.5L, 2L, 2.5L, 3L, 4L, 5L, 10L, 15L, 20L, 25L and so on.
4. Grinding ball material: zirconia ball, high chrome steel ball, stainless steel ball, corundum ball, polyurethane ball, alumina ball as well as onyx ball and tungsten carbide ball.
5. Grinding generally choose the same material with the grinding jar grinding ball, can also be mixed and matched. The size of the grinding ball is generally 2mm to 50mm, generally recommended to use 3 to 4 different sizes of grinding balls in accordance with a certain proportion of mixed use.