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Pneumatics and hydraulicsPneumatics and hydraulics

What do we know?

Pneumatic and hydraulic circuits

Which of these circuits is hydraulic, pneumatic and electric?

How are these circuits similar and how do they differ?

Compressors in pneumatic circuits

What function do compressors carry out in pneumatic circuits?

How are reciprocating and rotary compressors different?

Compressors in pneumatic circuits

What function do actuators carry out in pneumatic circuits?

Which actuator above is single-acting and which is double-acting?

Control elements in pneumatic circuits

What is the function of a valve in a pneumatic circuit?

With what type of cylinder do we normally use a 4/2 valve?

Control elements: shut-off valves

How do the above shut-off valves work?

Which valve carries out the logic function AND and which carries out OR?

Hydraulic circuits: pumps

What is the function of the pump in hydraulic circuits?

What two types of pumps can you see above?

What have we learned?

Pneumatic and hydrauliccircuitsPneumatic and hydrauliccircuits ElementsElements Energy-generating elements , transport elements,

actuators, control elements

What have we learned?

Elements ofpneumaticcircuits

Elements ofpneumaticcircuits

Provides the circuit with compressed air. There are two types: reciprocating compressors and rotary compressors.

Usually made of steel or brass, soldered together or connected by steel or plastic connectors

Protection andmaintenance elements

Protection andmaintenance elements

Rotary actuators produce the rotating movement of an axle.

Directional control valves: 2/2 valves and 4/2 valves

Reciprocatingactuators

Flow control valves

Shut-off valves: non-return valves, dual-pressure valves and shuttle valves

Pneumatic circuits are used in can-crushing machines, door open/close systems and pneumatic drills.

CompressorCompressor

Control elements(valves)

Control elements(valves)

ActuatorsActuators

PipesPipes

Single-acting cylinders move a piston in one direction.

Double-acting cylinders move the piston back and forward.

Air dryers, filters, lubricators, pressure relief valves, conditioning units, silencers

What have we learned?

Elements ofhydrauliccircuits

Elements ofhydrauliccircuits

PumpPump Gear pumps or screw pumps

Hydraulic circuits use a pump instead of a compressor. They can be used in platform lifts, forklift trucks and hydraulic presses.

Filter, relief valve, and reservoirProtection and maintenance elements

Protection and maintenance elements