Information Details

Pneumatic valve principle

Release time:

2024-07-24

　　Pneumatic valves are valves driven by compressed air, using compressed air to drive the movement of multiple sets of combined pneumatic pistons in the actuator.

　　The characteristics of transmitting force to the beam and the inner curved track drive the hollow main shaft to rotate, and the compressed air disc is delivered to each cylinder.

　　Change the intake and exhaust positions to change the direction of rotation of the main shaft. According to the requirements of the rotational torque required by the load (valve),

　　The number of cylinder combinations can be adjusted to drive the load (valve) to work.

　　Functions and uses of various parts of the pneumatic valve component system:

　　Pneumatic actuator: divided into double-acting and single-acting types. Double-acting pneumatic actuator: two-position control for valve opening and closing.

　　Single-acting pneumatic actuator (spring return type): In case of pneumatic cut-off or failure, the valve automatically opens or closes.

　　Valve: The valve is a control component in the fluid conveying system.

　　Solenoid valve: divided into single-control solenoid valve and double-control solenoid valve

　　Single-control solenoid valve: When powered on, the valve opens or closes; when powered off, the valve closes or opens.

　　Double-control solenoid valve: When one coil is energized, the valve opens; when the other coil is energized, the valve closes.

　　Limit switch: Transmits the valve switch position signal remotely, including mechanical, proximity, and induction types.

　　Pneumatic positioner: Adjusts and controls the medium flow rate of the valve according to the size of the current signal (standard 4-20mA).

　　Air source treatment three-in-one unit: air pressure regulator, filter, oil mist lubricator, which plays a role in stabilizing the air source pressure, cleaning, and lubricating moving parts.

　　Manual operating mechanism: Manual operation when automatic control is abnormal.

　　Muffler: Installed at the exhaust port of the solenoid valve to reduce noise.

　　Quick connector: One end is connected to the solenoid valve or actuator, and the other end can be directly inserted into the air pipe.

　　Air pipe: There are hoses, copper pipes, and stainless steel pipes.

　　Pneumatic valve procurement matters needing attention:

　　In the current imperfect market economy environment, when purchasing pneumatic valves, it is necessary to clarify the specifications, categories, and working pressure.

　　Because pneumatic valve manufacturers, in order to compete for products, under the concept of unified design of pneumatic valves,

　　Carry out different innovations, forming their own enterprise standards and product individuality. Therefore,

　　When purchasing pneumatic valves, it is very necessary to put forward detailed technical requirements and coordinate with the manufacturers to reach a consensus, which will serve as an attachment to the pneumatic valve purchase contract.

　　This type of valve should generally be installed horizontally in the pipeline.

Six major causes of valve sealing surface damage

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Six major causes of valve sealing surface damage

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