There are 8 sets of heavy duty apron feeder installed in our raw material batching station, which are used for feeding two vertical mills. In order to reduce feed fluctuation, a plate feeder is installed upstream of each heavy duty apron feeder, and the two devices are used together to achieve the purpose of accurate measurement. However, after the equipment is put into operation, there is often a phenomenon that the plate feeder is stuck and stops due to the overflow of the feed port of the plate feeder, which takes time and effort for the staff on site to clean the material, and affects the normal feeding of the raw mill. In order to ensure the stable operation of the board feeder and heavy duty apron feeder, the company's new posts will conduct inspection here. If any abnormal situation is found, the company will contact the central control room to suspend the board feeder in time, and restart it after it is empty.
However, it is still inevitable that there will be overflow or material interruption. To this end, we designed a set of automatic anti-spill device, the material blocking signal is transmitted to DCS, through the program to automatically monitor the feeding situation, in order to realize the automatic stop when the feed mouth is overflowing and the automatic opening after the feed is cleared. The automatic anti-spill device is shown in Figure 1. The device is composed of a limit switch, a adjusting rod, a hinge support, a vertical rod, a spring, a wire rope and a steel disc. The hinge support is used to support the adjusting rod and make the adjusting rod rotate along the rotating axis. When the equipment is in normal operation, the tension of the spring is greater than the gravity of the steel wire and steel disc + the impact force of the raw material on the steel disc, so that the regulating rod is in a horizontal state and will not contact the limit switch. The working principle of the device is as follows: when the material layer increases to a certain height, the gravity of the material pressed to the steel disc + the gravity of the steel disc and the wire rope is greater than the tension of the spring, the adjusting rod rotates clockwise with the hinge support as the fulcrum, the terminal head contacts the limit switch and the electrical signal is transmitted to the DCS, and the interlocking plate feeding machine stops. After the heavy duty apron feeder gradually digests the material layer at the feeding mouth, the tension of the spring makes the adjusting rod reset, and the plate feeder automatically opens the feeding.
Turn, the terminal head touches the limit switch and the electrical signal is transmitted to DCS, and the interlocking plate feeder stops. After the heavy duty apron feeder gradually digests the material layer at the feeding mouth, the tension of the spring makes the adjusting rod reset, and the plate feeder automatically opens the feeding.
