Pneumatic motor, also known as pneumatic motor, refers to a device that converts the pressure energy of compressed air into rotating mechanical energy. Generally used as a rotational power source for more complex devices or machines. Pneumatic motors are classified according to structure: vane air motors, piston air motors, compact vane air motors, and compact piston air motors.
principle
In pneumatic transmission, a pneumatic actuator converts the pressure energy of compressed gas into mechanical energy and generates rotational motion. The commonly used pneumatic motor is a positive displacement pneumatic motor, which uses the volume change of the working chamber to perform work, and is divided into vane type, piston type and gear type. [1]
A pneumatic motor is a device that converts the pressure energy of compressed air into rotating mechanical energy. Its function is equivalent to an electric motor or a hydraulic motor, that is, it outputs torque to drive the mechanism to perform rotational motion.
The main differences between pneumatic motors and electric motors (or motors) are:
1. Small size can produce high power.
2. High adaptability, small temperature rise, and the rotation speed can change with the load until overload shutdown without causing any damage to the pneumatic motor. Therefore, a lower safety factor can be considered when selecting.
3. Emergency start and emergency stop, especially suitable for frequent starts, and it is very easy to change directions.
4. Simple stepless speed regulation, from zero to maximum, flexible operation.
5. The starting torque is large and can be started with load.
6. The structure is simple and the pneumatic motor has a particularly long service life.
7. It is not affected by the external environment, even in harsh environments such as water, dust, humidity, and dirt, because the internal pressure of the pneumatic motor is greater than the external pressure when it is running.
8. Safe and explosion-proof, the pneumatic motor does not produce sparks, overheating, explosions, short circuits (electricity) and other dangerous factors. It is especially suitable for environments with flammable and explosive substances or high temperatures, such as stirring solvents, paints, chemicals, etc.
The above points are the main advantages of air motors over electric motors and are the reasons for their adoption in many industrial fields. The disadvantages of pneumatic motors are: low output power, large air consumption, low efficiency, loud noise, and prone to vibration.