desiging, part selecting and fabrication procedure of the vaccum section of a leaf vacuum shredder machine

due to the massive loss of leaves in parks and green spaces and big cities such as isfahan and the lack of domestic production of leaf vacuum shredder machine for use in large green spaces of parks, the design and construction of the collecting and recycling by the system is need so the design of the vaccum section which is one of the main parts and includes entrance, channels and ducts and exhaust air passage, a centrifugal fan were diseigned according to the working conditions of the device and and based on the fluid mechanics. also vaccum air flow rate test was done in this research.