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The rotary vibrating mill has a U-shaped cross section of the cylinder 1 supported on the spring 4; the main shaft 2 is provided with an eccentric weight 3. The two bearings 5 ​​of the main shaft are mounted on the cylinder; the main shaft is coupled to the electric motor via an elastic coupling. When the motor drives the spindle to rotate rapidly, the eccentric weight will generate enough centrifugal force to cause the barrel to produce a rapid motion that approximates the elliptical trajectory. In this state of motion, the grinding medium of the cylinder and the material to be ground are in a suspended state to generate a small projectile impact and grinding action to pulverize the material.
The shape of the grinding medium in the vibrating mill is spherical, rod, short cylinder (steel section), etc., and its filling rate is higher than that of the general mill, which can reach more than 65%. The size of the grinding medium is generally small. For example, the steel ball is generally 10 to 50 mm, so the total specific surface area of ​​the medium is large; the vibration frequency of the vibrating mill is very high, up to 1000 to 1500 times/min. The Soviet Union developed a vibrating mill that vibrates 3000 times per minute. The amplitude of the vibrating mill is very small, generally 3 to 20 mm, and a large amplitude is used when the feed size is large. When the cylinder rotates, in addition to the movement of the grinding medium, the impact, the spin, etc., the entire grinding medium also produces a rotational motion opposite to the direction of the vibration trajectory, which is about 1/100 of the vibration frequency, and the grinding medium Rotating motion is beneficial to the mixing of materials and the stability of the properties of the grinding products.
These devices can be used in batch, continuous, dry or wet operation can be pulverized cement, iron oxide, zircon, quartz, wolfram, hard alloy, paint, wood, stone wax, graphite, talc, aluminum oxide, ...... Such as raw materials, the product size can be less than 1 micron. When the grinding material requires no iron, ceramic balls and rubber linings are available.
Figure 23 is a schematic view showing the structure of a 3MZ-300 three-tube vibrating mill produced by Wenzhou Mining Machinery Factory. [next]
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Figures 24 to 27 show the relationship between product size (micrometer) and processing capacity (liter) when different types of MZ vibration mills are used to treat different materials.
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Including end bell, spool, base and cap for pillow block, bearing housing, washer, nut, bearing, disc gang axle bolt lock, axle, snap ring, etc.
Amco Replacement Parts, Amco Disc Parts
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