The object of the gravity trape is to extract the seeds
stones and other heavy impurities from the cotton. Seeds in

cotton must be removed, if not it causes so many difficulties in
subsequent spinning preparatory process. For Ex, Seeds get
crushed under the calender Roller in Blow Room & expel seed oil
and affect the lap quality.


At carding, metallic wires get loaded with seed coats which affect the carding quality.

The installation of gravity trap at step cleaner is shown in fig.

It can be installed at any point where the material is accelerated by either gravitational or i beating force and where further flow of material takes place by air suction.

Under these condition, if the air inlet to the suction system is provided the delivered material has a tendency to be thrown out of the air inlet, it is possible to effect the seeds and heavy particle against the resistance of incoming air.