The selection of the chain mainly depends on the maximum tension of the conveying chain, and the performance of the material should also be considered. For example, roller chain should not be used for powdery materials, while roller chain should be preferred for materials easy to produce floating chains.
The selection of scraper type mainly depends on the characteristics of the material and is limited by the structure of the scraper conveyor itself. Transport general materials, can choose the type of simple structure; In order to reduce the adhesion of the material on the scraper, it is convenient to unload and clean the material. For the material with high suspension and fluidity, the scraper type with complex structure should be selected. When conveying high density materials and large machine slot width, the scraper type with inclined support should be selected to ensure the strength and rigidity of the scraper. In order to reduce the crushing rate, improve the abrasion resistance of the scraper, reduce the quality and reduce the noise, the scraper made of engineering plastics can be used in grain transportation. In horizontal conveying bulk density is big, and the high proportion of large particle size and moisture content is higher fine powder or powder material and conveyor is too long, and there will be a "card", which tends to make the scraper chain floating on the material, the chain of "floating" phenomenon, scraper chain and can be run in the opposite direction tilt on welding in the chain of 700 to 800, press the motion resistance of vertical force, so that the scraper chain run close to the bottom of the channel, to avoid the phenomenon of floating chain.
