The kernel of the conveyor’s feeding system of steel plant is belt conveyor, and the belt sway switch is one of main switch of belt conveyor. In the progress of feeding, the operation’s condition directly influent the efficiency of conveyor’s feeding system, and also have relevant factor with the safety of equipment operator. So, it is necessary to keep the steady and smooth operation of belt conveyor. In order to improve work efficiency at the base of equipment operator’s safe, switch’s scientific choice and proper installation became more important. Through technician’s careful design and installation of belt sway switches to realize the optimal configuration of belt conveyor. The principle of the belt sway switch’s selection; firstly, try your best to choice two stage deviation switch and multistage deflection switch. It can detect the belt’s different deviation degrees, and offer more information for the control system. Preference should be given to production which carry memory and action indication of switch’s itself, this is because the belt conveyor is dynamic operation and have the function, and can determine the specific position of belt conveyor to analyze the reasons of deviation, it is also convenient for equipment debugging and maintenance. It more batter to select non-contact belt sway switch. Non-contact off-stack switch enables the photoelectric proximity switch to replace the roller to detect whether the belt is off-track. Its advantage is long life, easily maintain, and the disadvantage is expensive. And then, the installation of belt sway switch. First of all, Control the mounting distance scientifically, mounting distance should be based on the actual equipment operation needs, and to ensure that not only suitable but also can be normally operation. Normally, the distance of the belt sway switch and the head or tail of belt conveyor don’t go beyond 15m. what’s more, you should to confirm the running wide range according to the determine of belt conveyor equipment technology. Generally, the belt running wide range isn’t allowed to over 1/5 of the belt width, and the belt deviation is not allowed to rub against the fixed mechanism. The range of deviation allowed at both ends of leather head and tail should be controlled at least between the supporting mechanism on both sides of the roller. The frame of the belt sway switch should be constructed to adjust the position of belt sway switch along the side of the belt. This is in order to adjust the allowable deviation range according to the actual situation of the site.
Belt sway switch is the product of using to detect the belt conveyor deviation, and the safety protection device for the automatic alarm and stop under the condition of conveyor’s deviation. So, it’s necessary to grasp and understand the knowledge of the belt sway switch.