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

Sieve for Circular Vibratory Screener GR 50

INDUSTRIES

 Mining

 Metallurgical

Food

 Construction

 Chemical

Pharmaceutical

 APPLICATIONS

Diamonds, ferroalloys, ore, metal powders, coal, glass, ceramics, polymers, peat, cereals, coffee.

    
    

CHARACTERISTICS

PARAMETRES

VALUES

Inner frame diameter (mm)

500

Mesh size (mm)

0,315-4

Size of apertures in perforated plate (mm)

0,8-5

Maximum weight of sieve with mesh, kg

3,2

Maximum weight of sieve with perforated plate, kg

3,7

Mesh size of metal fabric screens

Cell size, mm

 0,315 

 0,355 

 0,4 

 0,45 

 0,5 

 0,56 

 0,63 

 0,7 

Material

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass

brass,

s.steel

brass,

s.steel

Cell size, mm

 0,8 

 0,9 

 1 

 1,1 

 1,2 

 1,25 

1,4

1,6

Material

brass,

s.steel

brass,

s.steel

brass,

s.steel

s.steel

s.steel

brass,

s.steel

s.steel

brass,

s.steel

Cell size, mm

1,8

2

2,2

2,5

2,8

3,2

3,5

4

Material

s.steel

brass,

s.steel

s.steel

brass,

s.steel

s.steel

s.steel

s.steel

s.steel

Size and shape of apertures in perforated plate

Aperture size, mm

 Diameter

0,8

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

Side of square

3,15

3,5

4,0

4,5

5,0

Production of sieves with other sizes of openings is possible.

ADVANTAGES

NO CROSS-CONTAMINATION OF SAMPLES

The sieve frame is made of stainless steel (AISI 304). The ingress of sample particles between the frame and the screening element is excluded due to their tight fit to each other.

SIEVE SHAKERS COMPATIBILITY

GR 50 sieves can be used in Circular vibratory screener GR 50  based on VP 50 vibration drive.

MESH MATERIAL

  • stainless steel
  • brass

SIEVES WITH PERFORATED PLATE

In GR 50 sieves, a perforated stainless steel plate with round or square holes is used. Sieving sufrace with standard openings are made of perforated sheet, and non-standard sieves are laser cut. Minimum size of the openings is 0.8 mm.

DAMPING RINGS AND EMBOSSING

The shock-absorbing sealing ring eliminates the collision of the sieves and ensures their tight connection to each other, and also facilitates the disassembly of the sieve column. Radial shoulders and embossing provide high rigidity of the sieve.

CALIBRATION CERTIFICATE

Production quality is confirmed by a calibration certificate.

LASER ENGRAVING

Laser engraving labeling contains the following information:

  • Sieve type
  • Opening size
  • Serial number
  • Date of production
  • Specifications
  • Frame material
  • Sieving surface material
  • Contact information

DESCRIPTION OF THE DEVICE

GR 50 Screener sieve consists of upper and lower frame, a sieving surface, screws with washers and nuts, a discharge nozzle, a bumper and a shock-absorbing sealing ring.

In the place of attachment of the sieving surface and on the upper end of the frame, radial shoulders are made, which ensure the rigidity of the sieve. The sieving element is tightly attached to the frame, witch exclude the ingress of material between the frame and the sieving surface.

Labeling is performed by laser engraving.

The shock-absorbing sealing ring eliminates the possibility of impacting the ends of the sieves and provides a tight connection between the sieves, with the intermediate rings, trays and covers.

GR 50 Screener sieve can be equipped with stainless steel or brass mesh.

Types of perforated plates:

  • Plates made of standard perforated sheets;
  • Plates with zone perforation;
  • Laser cut plates

OPERATING PRINCIPLE

The number of sieves, as well as the mesh size or the size and shape of the perforated plate apertures are determined by the conditions of the analysis.

The material to be sieved is loaded into the upper sieve. The sieve column complete with tray and cover must be shaken using a VP 50 vibration drive. Using the vibration drive allows to increase productivity of sieving due to high-frequency reciprocating screw oscillations of the platform on which the column of sieves is fixed.

Particles of material which are smaller than the size of the sells / apertures in the sieving surface of the upper sieve fall through on the next sieve, where the cycle repeats; larger particles move along the surface of the screening element and, due to the bumper, fall into the nozzle and are unloaded from the sieve into the receiving containers. As a result, the material is distributed in the receiving containers in accordance with the fractional content.

Standard perforated plates

Zone perforation plates

Laser perforation plates