The measurement of pressure distribution in industrial rubber roller husker has hitherto been carried out only on roller systems of the fixed gap type. The apparatus described here extends the measurement to processes in which there is no fixed gap between the rollers, and also to appreciably lower loads than any previously studied.
A radial pressure pin is mounted in one of the rollers and transmits the load on its outer end to a pressure-sensitive device situated within the roller. Provision has been made for the investigation by actual pressure-distribution measurement of the effect on recorded pressure of the height of the pressure pin relative to the roller surface and of depression of the pin under load. Pin depression has been found to cause erroneous pressure recording, and a method of correction has been developed.
Milling, an important processing step of paddy (rough rice), is usually done to produce milled and polished grain. A typical rice milling system is a multi-stages process where the paddy is first subjected to dehusking by using a husker and then to removed of brownish outer layer, known as whitening. One of the major problems of rice industry is breakage of kernels during milling. As cooking quality of broken rice is very poor, the market value with broken grain is much less than that for whole grains.
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