Pneumatic guide PR

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 disposition and operating position in a paper machine, the guides are produced in a standard design as is introduced in a chart on the following page. For all guides types, we recommend a pneumatic sensor PR-02-PVW.

Design

Horizontal guide PR-xxxyH

• consists of a bearing housing into which a guide roll is bedded. The bearing housing can turn on a bearing pin by means of two pneumatic bellows.

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.

Main parts

• bearing housing (1); pneumatic bellows (2)
• base plate (3)
• pneumatic sensor (4); guide pneumatic circuit (5)

Material

• pneumatic bellows (rubber)
• regulator : wet part (stainless steel); dry part (common steel)
• pneumatic sensor (stainless steel)

Accessories

• air treatment unit

Scope of delivery

• complete machine according to main parts description
• accessories optionally

Advantages

• fully automatic operation
• low operating costs
• functionality and reliability in service

Machine design and work safety are in compliance with EU standards.

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