Grading of Grapes and resin
This is a single unit that removes dust and twigs and grades raisins by size. The machine consists of three motors and three sieves, blower, a belt and pulley mechanism and a rubber brush. The grapes are dried for 15 – 20 days and then treated with chemicals to ensure proper drying and protection from pests. The dried grapes are fed into the machine through a feeder, which has a rotor with a rubber brush. A 3 HP motor drives the mechanism. The brush hammers the dried grapes to get the small twigs off the grapes. These dried grapes are then passed through the blower, which blows the dust off them and cleans the grapes with the help of a high-pressure airflow. The blower utilizes the power of a 2 HP motor. The dried grapes are now clean and are graded with a vibrator (driven by a 2 HP motor) connected to three sieves with different wire meshing (9 mm, 6 mm and 4 mm). These are connected through a pulley-belt drive. The dried grapes separated over each sieve are collected in a different chamber after they are scaled in specific grades. These are then finally processed accordingly for making raisins (kishmish). The machine grades the raisins into three sizes – large, medium, and small.
Link: This machine saves time by blowing away the dust, removing the twigs and grading the raisins by size. This simplifies the entire process for the farmer and after the raisins are graded, the farmer visually inspects the quality. With this device, the operator is safe from exposure to the dust from the blower. This machine helps in removing the tediousness involved in cleaning every single raisin and grading it accordingly.
Manufacturing Capacity: Yes
Problem Scale: Local in india