CMF-BFContinuous piston screen changer with back flush function

For applications with higher levels of contamination and frequent screen change intervals, the continuous piston screen changer with back flush function CMF-BF is used.

This filter type is able to clean the screens automatically. The back flush attachment includes two pistons which automatically perform the back flushing process.

When a filter change is required, one of the two back flush pistons is moved into the back flush position first. As a result, the melt inflow of the corresponding filter is interrupted. A small melt stream of already purified material is diverted and passed backwards through the filter to be cleaned and discharged to the outside. Subsequently, this process is automatically repeated for the second filter.

FiltertypScreen diameter [cm²] / [sqin]Output  [kg/h] / [lbs/h]Screen diameter [mm] / [in]
CMF-2/058-BF

2×27

2 x 4.0

50-10

110 – 220

58,3

2.3

CMF-2/076-BF

2 x 45

2 x 7.0

80 – 195

176 – 430

76,3

3.0

CMF-2/096-BF

2 x 72

2 x 11.2

130 – 290

286 – 639

96,3

3.8

CMF-2/116-BF

2 x 106

2 x 16.4

190 – 430

418 – 948

116,3

4.6

CMF-2/125-BF

2 x 122

2 x 18.9

220 – 490

485 – 1080

125

4.9

CMF-2/148-BF

2 x 172

2 x 26.7

310 – 690

683 – 1521

148,3

5.8

CMF-2/176-BF

2 x 244

2 x 37.8

430 – 980

948 – 2161

176,3

6.9

CMF-2/200-BF

2 x 314

2 x 48.7

560 – 1260

1235 – 2775

200

7.9

CMF-2/230-BF

2 x 417

2 x 64.6

750 – 1670

1653 – 3682

230,3

9.1

CMF-2/250-BF

2 x 491

2 x 76.1

880 – 1960

1940 – 4321

250

9.8

CMF-2/300-BF

2 x 707

2 x 109.6

1270 – 2830

2800 – 6239

300

11.8

CMF-2/340-BF

2 x 908

2 x 140.7

1630 – 3600

3594 – 7937

340

13.4

CMF-2/400-BF

2 x 1257

2 x 194.8

2260 – 5030

4982 – 11090

400

15.7

The throughputs are essentially influenced by material, viscosity, filter fineness and degree of contamination.

Applications

  • Allrounder. Filtration of industrial and production waste
  • Products. Pipe, profile and film production
  • Versatile. For polyolefins, many engineering plastics and hotmelt adhesives

 

  • High temperature. Process temperatures up to 350°C
  • Flexible. Process pressures up to 350 bar

Customer benefits

  • In time. Within seconds in back flush position!
  • Fast. Easy and quick retrofit from standard to back flush function
  • Economical. Low melt loss at back flush

 

  • Practically. Quick mounting of retainer, no bayonet lock necessary
  • Efficient. Short back flush process

Options

  • Steam or fluid heated
  • One hydraulic to operate several screen changers
  • High temperature execution
  • CMF-ECO execution