Pneumatic Guides

Pneumatic guides PR are designed for paper machines wires and felts run regulation or for a contingent regulation of other endless belts. The regulation itself consists of a pneumatically controlled sensor with a vane and of a pneumatic circuit.

According to the location in paper machine regulators are produced as a type „PR-302-WS” – for wet PM part in stainless steel design, and for dry part as a type PR-302-DS made by structural steel. Operational position of the regulator is random.

Design

Horizontal guide PR-xxxyH consists of a bearing housing into which a guide roll is bedded.

Vertical guide PR-xxxyV is almost of the same design as the horizontal one with the only difference consisting in the fact that its lower pneumatic bellow is bigger due to elimination of weight of the roll that is guided.

Special guide PR-xxxyS is designed for a wire run regulation in PM wire parts for a guide roll with a doctor.

Sensor with vane PR-02-PVW The pneumatic guide is an actuator which sets a guide roll into a needed position according to the evaluation of sensor impulses. Generally, the sensing element works like a distributor valve forcing the pressure air to enter particular pneumatic bellows.

The valve dislocation is due to a vane swinging to the right or to the left from the central position of the longitudinal machine axis. The sensor tip is to be set in its central balanced position during installation by pushing it on the relevant edge of an endless belt.