Maliy pr. V. O., 62/2, liter A, St. Petersburg, Russian Federation, 199178

Vibrating grinder VG 3M

INDUSTRIES

 Mining

 Metallurgical

Food

 Construction

 Chemical

Pharmaceutical

 APPLICATIONS

Ore, ferroalloys, slag, coke, glass, mineral fertilizers, granite, marble, cement, soil, potassium, phenolic, salt, soda

     

CHARACTERISTICS

PARAMETERS

VALUES

Maximum initial material grain size, mm

5

Mohs hardness of grinded material, up to

7

Cup charging volume, cm3

20 – 50

Number of cups

3

Average product particle size, mm *

90%<0,02

Comminution time, minutes

1-30

Electric motor power, kW

2,2

50 Hz supply voltage, V

380

Overall dimensions, mm (Length x Width x Height), mm

670х615х1225 

Cup material – tool steel / zirconium dioxide 

AISI 01, DIN 150Cr14, 9XC / ZrO2

*When using grinding sets made of zirconium dioxide ZrO2.

ADVANTAGES

GRINDING EFFICIENCY

Platform oscillation mode stimulates the circulation of material inside the cup.

The shape of the grinding organs provide circulation of the material inside the cups.

The oscillation amplitude of the platform (10 mm) provides high grinding performance.

EASY MAINTENANCE

Folding cover for quick access to the cup.

Cup fastener with adjustable latch.

EFFECTIVE NOISE INSULATION

Soundproofing lining inside the cover and on the entire inner surface of the casing.

 OPERATIONAL SAFETY

The end switch prevents the grinder from starting with cover open.

DRIVE SHAFT

Durable drive shaft transfers torque from the electric motor to the eccentric weight of the platform.

SIMULTANEOUS GRINDING OF 3 SAMPLES

Simultaneous grinding of 3 different samples up to 50 cm3 or one sample up to 150 cm3. Possibility of using cups made of various materials (tool steel or zirconium dioxide).

BUILT-IN TIMER

The timer allows setting the operating time and automatically stops the grinder.

QUALITY SPARE PARTS

The cup is made of tool steel (AISI 01, DIN 150Cr14, 9XC). A zirconium dioxide cup is available on request. Polishing of the cups, lids, rings and rollers minimizes contamination of the sample with particles from previous samples.

NO SAMPLE CONTAMINATION

The use of zirconium dioxide cups allows avoiding the contamination of the sample by metal particles of the grinder working bodies.

DESCRIPTION OF THE DEVICE

In VG 3M vibrating grinder comminution occurs due to abrasion — simultaneous compression and shear of the material. The product particle size depends on the grinding time, the physical properties of the material, the loading volume of the cups (the range of recommended volume is 20 — 50 cm3) as well as the material of the cups.

The structure of VG 3M vibrating grinder includes: a frame with an electric motor mounted on it, an debalance assembly with the platform, a drive shaft, a cups fastener mounted on the platform, and cups assembled. To limit access to the internal components of the vibrating grinder and to reduce the noise during operation, casing panels with soundproof lining are installed on the frame. The platform is mounted on the frame through springs. The 3 cups are mounted on the platform and fixed on it by a cups fastener with a latch.

The cover mounted on the plate is designed to soundproof and limit access to the vibrating parts of the grinder and is equipped with an end switch preventing the grinder from starting with cover open.

OPERATING PRINCIPLE

When the electric motor is turned on, the torque is transmitted trough the drive shaft to the debalance fixed on the axis of the platform. The platform mounted on the springs makes circular movements in the horizontal plane due to the shifted center of gravity of the rotating debalance. The length and stiffness of the springs are selected to provide platform vibration amplitude of 10 mm. Due to this, the ring runs on the walls of the cup, and the roller — on the walls of the ring. The material is grinded between the walls of the cup and the ring, between the roller and the ring, and also between the lower ends of the roller, ring and the bottom of the cup; the upper ends of the ring, roller and lid. The particle size of the grinding product can be regulated in two ways:

  • by changing the grinding time;
  • by changing the loading volume of the cups.

The range of recommended loading volume of one bowl is 20 — 50 cm3.

PRODUCTION OPTIONS

  • Complete with cups made of tool steel;
  • Complete with cups made of zirconium dioxide ZrO2.

Simultaneous installation of cups made of different materials is possible

VG 3M scheme

Loading scoops, V=0,7 L