The chamber dividing bodies divide the helical screw grooves into chambers whose volume varies with rotation of the screw- shaped rotor.

The compression process is realized by continuous rotation of two helical screws.

A helical screw pile includes a longitudinal shaft having a top end and a bottom end with a plurality of helical plates arranged on the shaft in increasing diameter from the top to the bottom.

The screw pile can be installed very quickly and its carrying capacity is excellent.

The die may have one or more helical screws (48, 49) mounted statically in a passage (47) through which the product steam flows.

Gear teeth (38) of a clamp arm (16) are enmeshed with helical screw grooves (30) formed on the outer circumferential surface of the rotary body (28).

As the two helical screws are turned, the volume is reduced resulting in an increase in air pressure.

As the two helical screws are turned, the volume is reduced resulting in an increase of air pressure.

Another type of positive displacement compressor is the rotary screw compressor, which uses helical rotating screws to guide air into a chamber, whose volume is decreased as the screws rotate.

The helicoidal screws synchronised with the cams engage the longer pin and allow the supporting, raising and lowering of the package of horizontal slats inside the box.

The housing (1) includes a first end wall (2) and a second end wall (3) and a barrel wall (7, 11) that interconnects the end walls.

The conveying of granular materials is present in many industries: pharmaceuticals with helical screws, food processing with vibration systems, mining with conveyor belts, among other examples.

Owing to the broad range of sizes available, both small and large construction projects can use screw pile foundations.