1compost trommel screen Use and scope of application
Compost trommel screen is an important equipment for material screening and classification, which is widely used in metallurgy, mining, construction, waste treatment and other industries, and is favored by users in the industry.
How the compost trommel screen works:
The compost trommel screen is supported by four sets of supporting wheel devices, and the power is transferred to the roller through the transmission parts, which do passive rotation on the supporting wheel to complete the screening operation.
compost trommel screen in the process of manufacturing problems
It is easy to see from the working principle of compost trommel screen that ensuring the coaxiality between the two rolls and the transmission is the most important part of the compost trommel screen production. Low coaxiality manufacturing precision will cause the transmission parts with reduced precision, transmission parts wear acceleration, shortened service life, at the same time, the drum will swing in the rotation process, resulting in cylinder deformation, resulting in sieve plate replacement difficulties, interchangeability deteriorates, increases the use and maintenance costs, and even causes the structure to open welding, Shorten the service life of the compost trommel screen. The design of compost trommel screen is the whole welding type structure, welding type compost trommel screen especially large compost trommel screen(screen cylinder inner diameter up to 2.4m, roller ring and transmission parts maximum outer diameter up to 2.8 m, roller length up to 12 m) there is no reliable benchmark in the production process, and there is welding deformation in the welding process, to ensure the coaxiality requirements between the rolling ring and the rolling ring, the rolling ring and the transmission parts is very difficult, the manufacturing accuracy is unstable.
4 compost trommel screen structure improvements
According to the structure and working principle of compost trommel screen, the paper puts forward the idea of improving it: 1) dividing the large welding structural parts into several small unit structural parts, reducing the difficulty of making structural parts; 2) Machining small unit structural parts to ensure production accuracy; 3) Assemble each unit with rivets or bolts. Split method: First split the compost trommel screen into 5 segments along the axis. After the separation, the drum assembly welding parts in the feeding section, the drum assembly welding parts in the transmission section and the drum assembly welding parts in the discharging section have the mechanical processing conditions; The compost trommel screen frame can not be processed, continue to split it, the screen cylinder frame along the circumference of the direction of the split into a number of smaller units, so that it has the processing conditions. After splitting, the following measures should be taken to ensure the production accuracy: 1) Each unit is formed by welding; 2) Stress removal of each unit assembly after welding to eliminate welding stress; 3) After stress treatment, each unit is sent to the machine tool for processing to ensure that the size and tolerance of shape and position meet the requirements of the drawings.
