The Construction of Corns Removing Machine for Ban Pa Dang Tai Community, Talukklangtung Commune, Muang District, Tak Province.

Abstract

This research aims to construct the corn shelling machine for Ban Pa Dang Tai Community, Talukklangtung commune, Muang district, Tak province. The corn shelling machine is consisted of 2 parts. The first part removes grain from the whole corn and then transfer to sieve, which removes grain from corncob. The second part is the power source system that powers a V-belt system with 2 Hp and 1,450 rpm.

The corn shelling machine was tested using “PACIFIC 339” corn which contains 15% humidity. In the light of comparison between rotation speed and weight of corn seed, there are three different levels of rotation speed such as 720, 540 and 360 rpm. The optimal speed is 360 rpm that could handle 20 kg of corn with average time of 30.74 seconds. The amount of yielded grain was 85.80%, while 0.7% of the corn seed leaves the exit door. 83.34% of the corncobs were in complete condition, 8.51% were in less complete condition. There is 8.14% of broken particles of corn seed. This machine can work with at least 1,500 kg of corn per hour.

The results of the satisfaction assessment showed that most respondents were satisfied with the appearance of the machine for appropriate use in the community. The average score is 4.93. The average score on minimal contamination of corn is 3.37, reflecting medium satisfaction level. The overall average score of the corn shelling machine is 4.51.