Question

Label Each component in the below shown pneumatic design and explain in one or two lines their use or purpose and how the below pneumatic device works.

St S2 2 * 应。 3 寸 2 Y1 - 3

Answer 1

S1 S2 A 2 с 1 B 4 2 D 5 3

Note: See the labeling in the image.

There are mainly four parts in the pneumatic circuit.

i) A- Double acting cylinder with cushion. The extension and retraction of the piston is controlled and the retraction will be fast. Hence, a cushion is kept at the end the piston for its safety.

ii) B- One Way flow control valve (used to control the speed of the air flow in one direction). It is used to control the speed of the piston in double acting cylinders.

iii) C- Quick exhaust valve – It helps in increasing the speed the air creating a wider opening. It is used to increase the speed of the piston in desired motion.

iv) D-5/2 way valve (number of ports is 5 and 2 is the number of switching positions) with single solenoid operation and spring return.

Operation of pneumatic circuit: s1 s2 - aܐ IPF! Tܐܟ 3

Extension of cylinder: i) ii) When the solenoid is operated, the air flows through the 4-1-2-Sl. The extension of cylinder will be slow or depends on B, The speed of the piston will be based on the B. S1 S2 - 2 1 4 N WY 6

Retraction of cylinder:

i) Once the solenoid is off, the 5/2 valve return to normal.

ii) The air will quickly enter into piston and exhaust will be fast via C.

Note: The arrow are shown clearly. Watch it.