Rancang Bangun Mesin Pencacah Kompos dari Kotoran Sapi Kapasitas 250KG/JAM

The "Fajar Pagi Bathin Tongono" cattle group is active in cattle farming using a fattening method. This group was established in 2020 with guidance from Pertamina Hulu Rokan.
The group's revenue comes from the sale of cattle, which is focused on meeting the needs for the Idul Adha holiday. Over time, the group aims to expand by processing compost fertilizer from cattle manure. One of the stages in processing compost fertilizer from cattle manure is shredding the compost material. Before shredding, the compost has already undergone a fermentation stage.
The fermented cattle manure will harden and be shredded to become fine compost. If the shredding is done manually, it will be inefficient and time-consuming. Therefore, a compost shredding machine has been designed and created to assist the group in processing compost fertilizer. The
working principle of the shredding machine, which has one inlet and one outlet, is based on therotation of the driving machine transmitted through a pulley and V-belt system, which reduces the rotation to the cutting shaft. The rotation of the cutting shaft will turn the shredding blades, and the cattle manure for the compost will be fed into the shredding blade inlet from the top. The
shredded material will be directed by guiding blades to the outlet. This machine is designed with a capacity of 250 kg/hour, with dimensions of 137 cm in length, 60 cm in width, and 121 cm in height. The driving machine used is a 7 hp diesel engine, with a blade system utilizing a striking
mechanism. After a 1-hour test with an initial input of 425 kg, the resulting shredded output was 330 kg, achieving 77% efficiency of the initial weight, with a shredding size of 3 mm