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

Sieve S 40/70 diameter 400 mm, height 70 mm

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

400

Mesh size, mm

0,2 — 4

Size of apertures in perforated plate, mm

0,8 — 200

Maximum weight of sieve with mesh, kg

2,5

Maximum weight of sieve with perforated plate, kg

3,0

Maximum sample weight for sieve with mesh, kg

0,6

Maximum sample weight for sieve with perforated plate, kg

2,0

Mesh size of metal fabric screens

Cell size, mm

 0,2 

 0,25 

 0,28 

 0,315 

 0,355 

 0,4 

 0,45 

 0,5 

 0,56 

Material

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass

Cell size, mm

 0,63 

 0,7 

 0,8 

 0,9 

 1 

 1,1 

 1,2 

 1,25 

1,4

Material

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

brass,

s.steel

s.steel

s.steel

brass,

s.steel

s.steel

Cell size, mm

1,6

1,8

2

2,2

2,5

2,8

3,2

3,5

4

Material

brass,

s.steel

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

5,5

5,6

6,0

6,5

7,0

7,5

8,0

9,0

10,0

11,0

12,0

12,5

13,0

14,0

15,0

16,0

17,0

18,75

20,0

22,5

25,0

30,0

31,5

35,0

40,0

45,0

50,0

55,0

60,0

63,0

70,0

80,0

87,5

100,0

125,0

150,0

200,0

300,0

Side of square

3,15

3,5 

4,0 

4,5 

5,0 

5,6 

6,0 

6,3 

7,0 

8,0 

9,5 

10,0 

11,2 

12,0 

12,5 

13,0 

15,0 

16,0 

18,0 

19,0 

20,0 

22,4 

25,0 

31,5 

31,5 

32,0 

34,0 

37,5 

40,0 

45,0 

50,0 

60,0 

63,0 

80,0 

120,0

130,0

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

S 40/70 sieves can be used in sieve shakers A 40 based on VP 50.

MESH MATERIAL

  • stainless steel
  • brass

DAMPING RINGS AND EMBOSSING

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

REPLACING THE SIEVING ELEMENT

Sieve S 40/70 has a collapsible design, which allows replacing the sieving element in case of damage to it.

DESCRIPTION OF THE DEVICE

Laboratory sieve S 40/70 consists of upper and lower frame, a sieving surface, screws with washers and nuts 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. The exclusion of cavities and gaps in which particles of material can accumulate reduces the risk of cross-contamination of samples, improving the quality of the sieve analysis.

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.

S 40/70 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 sieve analysis is performed using one or more sieves, a tray and a cover. 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 sieve column can be equipped with intermediate rings to increase the height of the sieve, which allows loading larger samples onto the sieve, as well as intermediate trays for installing several sets of sieves in one column.

The material to be sieved is loaded into the upper sieve. The sieve column complete with tray and cover must be shaken manually or 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. As a result, the sample is distributed between the sieves and the tray in accordance with the fractional content. At the end of the sieving process, the contents of each sieve are weighed and the particle size distribution of the sample is determined.

S 40/70 sieve scheme

Standard perforated plates

Zone perforation plates

Laser perforation plates