Thread Content
In the coal industry, belt conveyors are commonly used for transporting raw coal. They feature stable operation, high transport capacity, low maintenance costs over their lifetime, and ease of automation and centralized control, which is why they are widely utilized in this sector. The drum serves to transmit power and change direction in belt conveyors, and is an important component of such conveyors. Drum drives can be of either external or internal type, and their shapes can include drum-shaped drums, vane-type drums, and grooved rubber-covered drums. In areas with low temperatures and severe cold, due to the climate conditions and the materials being transported, ice can form on the surface of the idler rollers during the operation of belt conveyors. This leads to a decrease in the friction between the belt and the rollers, as well as inconsistencies in the belt’s circumference. As a result, belt deviation problems occur frequently during production; it is necessary to adjust the belt alignment 1 to 2 times per shift, and each such adjustment results in a disruption to production of about 20 minutes. 1. Through problem analysis, the technical solution employs fixed-point and timed spraying of antifreeze onto the drum to effectively address the issue of drum freezing, thereby reducing equipment failure rates and improving production efficiency. 2. The device is constructed using φ15 galvanized steel pipes for the piping system; branch pipes are installed at each turning drum on each floor, parallel to those drums at a height of 400 mm above them. Four atomizing nozzles are installed on each parallel pipe, and each branch is equipped with solenoid valves for multi-point control. A self-priming pump is used to generate pressure, thereby forming an antifreeze spraying system. 3. Application results: After the installation of the spray device for the conveyor belt rollers, spraying antifreeze on the surface of these rollers helps to reduce the occurrence of icing on them, thereby minimizing equipment failures. The frequency of belt deviation issues also decreased significantly, from 1 to 2 times per shift to 1 to 2 times per week. This yielded excellent results, ensuring more effective production time. The drum spray device is suitable for low-temperature and harsh winter regions, and can be promoted and applied in enterprises that use belt conveyors in similar climate conditions.