Use and maintenance of pneumatic components

I.Use and maintenance of pneumatic components

In a broad sense, pneumatic tools are mainly tools that use compressed air to drive the pneumatic motor and output kinetic energy to work. According to their basic working methods, they can be divided into: 1) rotary (eccentric movable blade type). 2) reciprocating (volume piston type) general pneumatic tools are mainly composed of power output part, operation form conversion part, intake and exhaust circuit part, operation start and stop control part. Of course, the operation of pneumatic tools must also have energy supply part, air filtration and air pressure regulation part and tool accessories.

• Power output part: it is one of the main components of pneumatic tools, mainly composed of pneumatic motor and power output gear. It relies on high-pressure compressed air to blow the horse's pneumatic components to the blades to make the motor rotor rotate, output the rotary motion externally, and drive the whole operation form to transform part movement through the gear. According to whether the stator and rotor are concentric, pneumatic horse pneumatic motor can be divided into concentric motor and eccentric motor. According to the number of air inlet, it can be divided into single air inlet motor, double air inlet motor and multiple air inlet motor. No matter what kind of pneumatic motor, it depends on the compressed air to blow the motor blade to drive the rotor to rotate. When the motor blade rotates at high speed, it always rubs against the inner wall of the stator. It is the most common vulnerable part of madane, so it has high requirements for the quality of compressed air and whether there are lubricating oil molecules in the compressed air.

• Operation form conversion part: it mainly converts the rotation motion output by the motor. In the automobile manufacturing industry, there are many ways of screw connection, most of which are rotary motion, of course, there are also linear reciprocating motion. For different types of pneumatic tools, the transformation part of operation form is mainly divided into mechanical clutch and planetary gear group, friction plate clutch and planetary gear group, hydraulic cylinder, torsion bar and hammer block group, etc. All of the above parts are important parts based on rotating motion, which determine the torque, speed, tightening accuracy and other important parameters of the pneumatic tightening tool. Because of its continuous clutch, pressure or torque transformation, its components are vulnerable to damage;

• Air inlet and exhaust part: the qigong component is obvious. The air inlet and exhaust part is the related channel of compressed air in and out, which is the energy supply system to ensure the normal movement of the motor;

• The movement opening and stopping control part, i.e. the commonly described pneumatic switch, is easy to be damaged due to its direct contact with the operator and external objects at all times and multiple engineering plastic products;

• Energy supply part: the compressed air is mainly formed after the air compressor compresses the air, and it is transported to the relevant gas electricity by the compressed air pipeline, and it is pulsating;

• Air filtration and air pressure regulation: since compressed air is usually transported through seamless steel pipe, rust on the inner wall, moisture and dust in the compressed air will be formed continuously during long-term use. If such compressed air enters the pneumatic motor directly without any treatment, the service life of the motor will be greatly shortened, resulting in insufficient and unstable power output of the whole tool, which is easy to cause damage to the motor and other parts. Therefore, the compressed air filter and regulating device must be set between the compressed air delivered by the pipeline and the pneumatic tool, and the pneumatic triple unit must be set. This task was undertaken by. The pneumatic triplet is mainly composed of barometer, filter, oil mist device, pressure regulator and other parts. The filter element is built in the filter, which shall be maintained, cleaned and replaced regularly after a period of use.

• Tool accessories: the tool accessories here refer to the tools installed on the pneumatic tool body and directly contact with the workpiece. The pneumatic triplet undertakes this task. The pneumatic triplet is mainly composed of air pressure gauge, filter, oil mist device, pressure regulator and other parts. The filter element inside the filter should be maintained, cleaned and replaced regularly after a period of use. Such compressed air will enter the pneumatic motor directly without any treatment, which will greatly shorten the service life of the motor, resulting in insufficient output of the whole tool's power pneumatic components. And unstable, easy to cause damage to the motor and other parts. Therefore, between the compressed air delivered by the pipeline and the pneumatic tools, it is necessary to set up the compressed air filtering and regulating devices, including all kinds of pneumatic sleeves, extension rods, conversion joints, knife heads, etc.

The above parts are interdependent, interdependent and cannot exist in isolation.

II. Installation system of pneumatic components and tools

Air source (air compressor or pressure distribution room) - oil water separator - 3 / 8 "(1 / 2") quick connector - 3 / 8 "(1 / 2") test connection - 3 / 8 "(1 / 2") quick connector - pneumatic tool.

III. operation of pneumatic tools

1. Gas supply

• use 90Psi (6.2bar) clean and dry air supply tool. Too much air pressure will quickly reduce the life of the tool.

• connect tools with components, conduit and hose of proper size indicated in the tool chart.

• if an air pressure regulator is used, set the air pressure to an output pressure of 0.62mpa.

2, steps

•  connect the pneumatic tools to the air production line.

• set the air pressure.

• the air lubricating oil device must be set up on the air production line. If the air lubricating oil device is not qualified or not, the following daily maintenance shall be carried out for the tool:

A. after 3 to 4 hours of continuous operation, separate the tool from the air source, drip 7-8 drops of high-purity light oil (low viscosity) from the air inlet of the tool, connect the air pipe, open the air source, and blow the oil into the cylinder. It is recommended to install a small oiler at the air inlet joint for qualified users with full working strength.

B. the air compressor and oil-water separator shall be regularly drained and impurity removed for maintenance in 30-40 days to ensure that the air entering the tool is clean and dry.

IV. advantages of pneumatic tools:

1. The air is easy to obtain, and the working pressure is low. The used air can be discharged on site, and there is no need to recycle the pipeline.

2. The gas has small viscosity and flow resistance loss, which is convenient for centralized gas supply and long-distance transportation.

3. High speed of pneumatic actuator

4. The pneumatic system has strong adaptability to the environment. It can work reliably in a wide temperature range, humid and dusty environment. If there is a little leakage, it will not pollute the environment. It is safe to use.

5. Simple structure, convenient maintenance and low cost

6. Long service life of pneumatic components

7. The pneumatic components have smaller executive output than the hydraulic pressure, faster movement, strong adaptability, and can work in the harsh environment which is easy to be natural, explosive, heavy, humid and impact. They do not pollute the environment. The pneumatic components have long working life, simple structure, easy maintenance and low price.

Composition of pneumatic series:

1. Air pressure generating device air compressor

2. Pneumatic actuator

3. Pneumatic control elements - elements used to control the pressure, flow and flow mode of the working medium, such as pressure, flow and direction control valves and various logic elements, etc., which enable the actuator to complete the required motion law.

4. Sensing element and conversion element detect the controlled parameters and turn them into pneumatic sensing element of air pressure signal, as well as elements that convert the gas signal and electro-hydraulic signal to each other.

5. Auxiliary parts of pneumatic components - including air source purification, component lubrication, component connection and noise elimination.