TROMMEL APPARATUS

About TROMMEL APPARATUS

Specification:

TROMMEL APPARATUS

Trommel or revolving screens consists of a cylindrical screen rotated about its axis. Simple Trommel may be arranged in series with oversize of the first passing to the second Trommel and the oversize of the second passing to the third, etc.

They are quite efficient for coarse sizes. The inclination of Trommel varies depending on the nature of material to be processed. The present trommel is built with screens of different sizes throughout their length, the feed entering at the end of the finest screen. In this way it is possible to collect materials of different size range from a single Trommel.

Drive to the central shaft is given through a variable speed motor coupled to reduction gearbox.

Drive is provided for conducting theexperiment at varying speed. Set-up is complete in all respect with guards,bins and control panel. A special arrangement to change the angle ofinclination of the Trommel is made.

Experimentation/learning objectives:

To calculate the separationefficiency.

To study the effect of speed onseparation efficiency.

To study the effect of changing theangle of inclination and RPM

Utilities required:

Electric Supply: Single phase, 220 V AC, 50 Hz, 5-15 amp combinedsocket with earth connection. Earth connection should be less than 5 volts.

Raw Material for Feed.

Floor Area: 2 m x 1 m.

Electronic Weighing Balance: capacity 2 Kg (least count 1 gm)

Technical details:

Trommel: Dia. 200-mm, Length 1000-mm (approx.)

Sieves: 3 Nos. of different mesh size.

Drive: Variable Speed Motor and Drive speed coupled with reductiongear box.

Feed Hopper: Compatible Capacity.

Collecting bins: 4 Nos. of suitable capacity.

Control panel Comprises of : RPM Measurement : Non-Contact typeProximity sensor with Digital RPM Indicator Standard make On-Off switch, MainsIndicator etc.

Special arrangement for changing theangle of inclination