Cumel Shower Oscillator CJD-301-CP
General
The new Cumel CJD-301 oscillator drive unit is designed for showers of the wires, rolls and felts used in the papermaking industry.
Degree of Protection
All the electrical and mechanical parts in the oscillator are protected against wet conditions. The motor, gear unity and sensors are installed inside a waterresistant acid-proof stainless steel casing
Assembly
The oscillator is easy to install in different locations. The physical dimensions of the model are shown in the Fig. 1. Custom made mounting are also available. (and fig. 2)
Operation
The oscillating motion is provided by a precision screw driven by the motor. The drive unit consists of a reliable 3-phase induction motor, which requires only a minimum of maintenance. The Cumel oscillator drive has an inbuilt mechanism to restrict the force generated by the unit. This will prevent mechanical damages in case the jet pipe collides with e.g. frame of the machine or the drive shaft exceeds its operating limits.
The linear motion is guided by a pulse counter counting the pulses sent by the rotating screw. The length of stroke can be adjusted by setting the desired value in millimetres. The screw is equipped with a rotation guard to switch off the motor and to start an alarm signal in case of unexpected halting of the shaft. The alarm signal can be used to switch off the high-pressure pump to avoid damages in teh wire or the felt when the oscillating motion stops.
Oscillating Speed
Due to a frequency converter driven motor it is possible to adjust the speed linearly. The adjustment of speed can be carried out manually by using a potentiometer or automatically according to the speed of the paper machine.
The speed can be adjusted in relation to the speed of the wire so that in each subsequent revolution of the wire the jet scrubs subsequent sections of it. This will provide the optimum cleaning result. An appropriate signal of the paper machine's control system, comparable to the speed of the machine, can be used as a control value for the oscillating speed, in which case the jet speed will automatically follow the speed of the machine. The type of signal must be specified when ordering.
Control Units
The control unit box can be mounted either along the machine or at the electric distribution board. The drive unit is provided with a preinstalled cable.
If necessary, several drive units can be managed by a single control unit.
The oscillator is connected normally to a I-phase supply. The voltage and type of supply must be specified when ordering.
Selecting of the Oscillation Speed
The oscillation speed is in relation to the speed of the machine. The relation between machine speed and linear oscillation speed is described below:
When running your machine with different speeds it is advisable to calculate also the max and min oscillating linear speed values.
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