Filter cloth deviation is a common problem of vacuum belt conveyor.The general belt conveyor will have a filter cloth deviation warning device and automatic correction device.Automatic corrective device is generally electric or pneumatic.Here we talk about pneumatic automatic correction device.
The pneumatic correcting device is composed of a sensor, an air source distributor and an adjusting airbag.When the filter cloth is deflected, the gas distributor will distribute compressed air to the two regulating bags according to the direction of the filter cloth, and then adjust the Angle of the roller to correct the direction of the filter cloth.Under normal circumstances, the adjusted corrective device can ensure that the filter cloth automatically corrects.It should be noted here that the position and angle of the sensor need to be adjusted during running in idle, water loading and load operation.If the deviation correcting device is adjusted only during idling or when adding water empty load operation, the phenomenon of filter cloth deviation will occur. At this time, there is no need to stop, and only the correction device can be adjusted again.It is worth noting that before the upper filter cloth, all the filter cloth support rollers should be checked again to prevent the displacement of the filter cloth support roller due to transportation or other reasons.It is very important to ensure that the filter roller is parallel.
As for the phenomenon of deviation of the filter cloth, there are mainly two reasons for the filter cloth itself:
1. Unscientific weaving process results in non-uniform quality of the filter cloth. When it is subjected to strong pulling force during operation, it will tend to the large-quality side.
2. Inaccurate cutting during the cutting of the filter cloth causes the filter cloth not to be a standard rectangle but a trapezoid, so that the deviation of the filter cloth will often occur after a period of time.