The deviation of belt conveyor in the operation process is a problem often encountered by enterprises in the production process.
The occurrence of these problems can easily lead to belt breakage and other faults, affect the production progress, and even endanger the life safety of operators, because some protective devices must be installed on the belt conveyor.
There are two common devices to prevent belt conveyor deviation and slip: slip switch and run through switch are mainly used to prevent deviation. The choice of which device depends on the needs of the enterprise.
The deviation switch is a protective device, which is used to detect the deviation degree and alarm of the conveyor belt during operation. When the belt deviates seriously, the emergency stop will be triggered automatically. The offset switch is at a certain interval (about 50m). Fixed on the supports on both sides of the belt conveyor.
Selection principles and precautions:
1. Try to select two-stage or multi-stage deviation switch as much as possible to detect different deviation degrees of the belt, so as to provide more information for the control system. The data obtained in this way is more accurate.
2. Select the switch body with motion memory and motion state indication; Because the belt conveyor is dynamic, this function can easily determine the specific position of belt conveyor deviation, analyze the causes of deviation, and facilitate equipment commissioning and maintenance.
3. Non contact deviation switch can be selected under certain conditions; Non contact deviation correction switch, photoelectric proximity switch instead of roller to detect whether the belt deflects. The advantages are long service life and convenient maintenance, while the disadvantages are high price.
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