COLLEGE: K.V.G. COLLEGE OF ENGINEERING, SULLIA
RECOGNITION: APPRECIATION PRIZE

Reciprocating pump using solar power involves the simple mechanism in which a whipper motor is made to rotate, to drive the pump. In this project, the motor speed is not directly coupled to drive, but is reduced by about 220 times, such that enough torque is produced to drive the motor. The solar power from just one panel is enough to run the pump and lift the water. A moderate high head is obtained with less discharge. Since solar power is available free of cost, the pump is designed in such a way that it could run continuously 8hrs. Hence the water collected is sufficient for house hold purpose, for smaller gardens etc.

If the same principle is used with more than one panel and a high power motor, high discharge can be obtained with higher head and hence and could be used for industrial purpose also. Since solar energy is non exhaustible and easily available, there is a large scope for this project.

WORKING PRINCIPLE : The solar energy absorbed by the solar module is collected in the battery provided.When the power is transmitted to the motor the motor rotates the gear box where the speed is reduced by 22 times. Then again the output speed is reduced by 22 times. Then again the output speed is reduced by 10 times with the help of a gear pinion mechanism. Now the torque in the main shaft driving the reciprocating pump is increased considerably through the main shaft. The torque is transmitted to the crank, which reciprocates the piston rod in the cylinder. The stroke length of the piston can be varied by adjusting the crank pin in the slots provided in the crank.Thus the rotary motion of the main shaft is converted into reciprocating motion of the piston. During suction stroke the suction ball valve gets opened and water is sucked into the cylinder. During the delivery stroke the water is pushed through the delivery ball valve. Thus water is discharged through the delivery pipe.