Supplier of dustproof longitudinal tear detector for shell

YHZL-L/KM Longitudinal Tear DetectorUsed for protection against longitudinal tearing of belt conveyors. The sensor is installed under the tape and will sound an alarm when the tape is scratched or damaged by foreign objects. Longitudinal tearing of the tape is a malignant accident, and allowing it to develop will cause serious losses. This series of detectors can continuously monitor the operation of adhesive tape. When a longitudinal tearing fault occurs, it can promptly issue a shutdown signal to prevent the fault from expanding.
YHZL-L/KM Longitudinal Tear DetectorWorking principle
The longitudinal tear detector consists of two parts: a sensor and a control box. The sensor is the detection element for longitudinal tearing. When the tape is torn during operation, the sensor can reliably detect it and output a switch value. The control box receives the signal from the sensor, controls the relay to operate, and outputs a switch value to the control room to achieve automatic emergency stop. At the same time, the panel alarm indicator flashes, and the control circuit locks. To restore the control circuit to normal, the reset button on the panel can be pressed. In addition, there is a self calibration button on the panel. When this button is pressed, it can simulate a tearing fault and verify the operation of the control system
The anti tear switch consists of two parts: a sensor and a control circuit. The sensor is a detection element for longitudinal tearing. When the conveyor belt of the belt conveyor is penetrated by foreign materials, the sensor is squeezed by the foreign objects driven by the operation of the conveyor belt, or when the sensor arranged at the discharge port is squeezed due to material blockage between the chute discharge port and the conveyor belt, the sensor can sensitively and reliably detect the tearing signal of the conveyor belt and output a switch signal, issuing a shutdown signal. The control circuit has a delay function
The longitudinal tear protection switch YHZL-L/KM is used to detect the longitudinal tear of the belt conveyor tape. When the tape is longitudinally torn, it can promptly issue a stop signal to prevent the tearing accident from expanding.

The longitudinal tear protection switch YHZL-L/KM can provide an alarm signal to the monitoring personnel or turn off the conveyor when the belt is torn, punctured, damaged at the junction, or when sharp objects protrude from the belt.

The longitudinal tear protection switch YHZL-L/KM is installed on both sides and connected by two sections of aviation steel wire ropes with ethylene jackets. One end of the rope is fixed on the support bracket, and the other end is connected to the pull ring of the tear switch. Two sections of rope form a closed loop under the belt, and when an object or torn belt is suspended and one or two ropes are swept off, a fault is detected. Due to the force exerted on the rope, it pulls out the pull ring shaft but causes the self selling handle to pop up. At this point, the two micro switches inside the machine sound an alarm or turn off the conveyor. After troubleshooting, press down the self selling handle to reset the camshaft inside the machine and wait for startup.

Main technical specifications of longitudinal tear protection switch YHZL-L/KM

·The shell is dustproof, rainproof, and suitable for indoor and outdoor installation
·One normally open, one normally closed, equipped with a four core cable of 1.5m in length, with red and blue colors indicating normally open and black and white indicating normally closed
·The rated value of the switch is 20A/125, 250V or 480VAC
·The switch can be connected in normally open or normally closed form as needed

Only 0.9kg of force is needed to trigger the switch.

Installation and commissioning of longitudinal tear protection switch YHZL-L/KM

·The tear switch is set between the buffer rollers under the tape in the receiving section. The installation bracket and tear switch should be installed, and the pull ring of the tear switch should be at the same height as the edge of the tape. If the height is not enough, a shim or channel steel can be added under the bracket. After measuring the height, the bracket should be welded firmly to the support.
·Hang a rope, lock one end through the pull ring of the tear switch with the rope, and pass the other end through the circular hole in the middle of the tear switch bracket for later use. Install two tear switches and hang two ropes, then fasten the two ropes together at a 30 degree bend.
·Tighten the cable in the middle hole of both brackets and fasten the cable buckle.
·The tension of the rope should generally act at 0.9kg to trigger the switch.
·When the tape sinks under heavy load, it should be kept 5mm-10mm away from the cable.
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