General: Factors affecting the overall layout of the belt conveyor are: conveyor inclination, receiving section and tail length, discharge section, arc section, transition section, tensioning device type and position, drive position, etc. Changes in these factors will lead to changes in the lateral arrangement, to highlight the importance of the lateral arrangement to the design of the whole machine, and to facilitate the simplified input during computer processing. This paper categorizes these factors affecting the overall layout into lateral design problems. To deal with it.
1. Conveyor inclination: The conveying capacity of the conveyor decreases with the increase of the inclination angle. Therefore, the inclination angle is selected as much as possible, especially for the conveying system composed of multiple conveyors. For conveyors with a belt speed exceeding 2.5 m/s, in order to ensure that the tail does not spread, the maximum inclination of the conveyor should be reduced by 2 ° -4 ° than the specified value. The higher the speed, the smaller the inclination should be. The maximum inclination of the conveyor that transports multiple materials is determined by the material with the smallest specified maximum inclination. For conveyors with a groove angle of λ = 45°, the maximum inclination can be increased by 2°-3° compared to conventional conveyors. When special measures are taken at the same time, the inclination of the lower belt conveyor should be reduced by 2°-4° compared with the general conveyor. In some cases, the inclination of the transporter can be increased to 28° or higher regardless of the transport speed. Special measures need to be taken at this time, for example, reducing the belt speed, increasing the groove angle of the tow, changing the side shape to increase the level or the gentle slope, etc., and asking the experts for economic and technical assessment, and should not rush to take a large dip.
2. Receiving section and tail length: The receiving section should be designed as a horizontal section as much as possible. When it is necessary to tilt the material, the inclination should be as small as possible. When the material falls to the receiving point of the conveyor, it should be the place where the conveyor is normally grooved, and the guiding trough is placed at the corner of a roller groove to ensure smooth feeding and convenient sealing of the guiding trough. When conditions permit, the groove angle of the receiving section is preferably 45°, and the section is arranged before and after the guide groove to better eliminate the possibility of material feeding in the guide groove.
3. Unloading section: The unloading section of the inclined conveyor is preferably designed as a horizontal section. Try not to use the high-profile and high-drive frame to facilitate operation and maintenance, which is conducive to the design of the conveyor head and transfer station. standardization. The unloading section is a horizontal inclined conveyor, and the distance from the fulcrum to the center line of the head roller should be sufficient to ensure that all the transition rollers are not on the concave arc. The discharge section of a conveyor with a belt speed ≥ 3.15 m/s should generally be designed as a horizontal section.
4. Drive device position: Single drum drive conveyor, the drive device is generally located at the head roller. Due to the need for process layout, or for ease of maintenance, or for no additional investment, it may be considered to have the drive in the middle or the tail. When using double drum drive or multi-roller drive, the position of the drive is determined according to the calculation.