Design of appropriate technology machine for semi automatic rice thresher to increase productivity and quality of rice hygiene Bukit Batu Bengkalis District - Riau

One of the ways to increase agricultural production is to apply appropriate and low-cost technological innovations. Especially in terms of handling yields, namely threshing rice mechanically (using a machine) because it is faster, the output is clean and does not tire farmers. Based on data from the Public Works and Public Housing Office of Bengkalis Regency, 29 December 2020, the area of paddy fields is approximately 545 hectares spread over 5 (five) villages, namely Parit 1 Api-Api Village with an area of 255 hectares, Api-Api Village with an area of 75 hectares. Ha, Sukajadi Village with an area of 85 Ha, Bukit Batu Village with an area of 80 Ha and Temiang Village with an area of 50 Ha. Seeing the incident above, the author tries to design and build a grain thresher machine with its work to maximize good and quality rice yields. The results of testing the performance of the rice threshing machine for threshing rice with a screw conveyor and blower system is the level of cleanliness of the threshing grain, which is 95%. Meanwhile, the working capacity of the rice thresher reaches 251 kg of rice/hour (straw input capacity is 416 kg/hour). So there is an increase in the working capacity of the rice thresher by 58%. While the increase in the quality of rice cleaning is 3.1% compared to the reference rice thresher.