Intelligent self-compensation sealing piston type pneumatic actuating mechanism

By introducing a combination of sliding piston, air inlet, air outlet, air passage, sealing ring, ring spring and pressure sensor into the pneumatic actuator, the dynamic adjustment of the sealing ring tightness is realized. This solves the problem that the sealing force in traditional pneumatic actuators cannot be adaptively adjusted with changes in working conditions, improves sealing performance and operating efficiency, extends the service life of the sealing components, and reduces energy consumption and maintenance costs.

CN122258089APending Publication Date: 2026-06-23IRRSAR ACTUATOR CONTROL CO LTD
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Patent Information

Application Number
CN202610366647.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional piston-type pneumatic actuators cannot adjust the tightness of the sealing ring in real time according to actual working conditions. Under low-pressure conditions, excessive preload may increase frictional resistance, while under high-pressure conditions, insufficient preload may cause leakage. It is difficult to balance sealing effect and energy consumption.

Method used

By designing an intelligent self-compensating sealing piston pneumatic actuator, the tightness of the sealing ring is dynamically adjusted through the combination of a sliding piston, air inlet, air outlet, air passage, sealing ring, ring spring, and pressure sensor. The sealing strength is automatically adjusted under different working conditions by utilizing the gas pressure itself. Combined with the preload of the ring spring and the fixation of the double locking ring, it is ensured that the sealing ring does not come off or shift during initial and high-frequency movements. The intelligent control of the solenoid valve and pressure sensor achieves precise matching of sealing strength.

Benefits of technology

It enables adaptive adjustment of the sealing ring under different working conditions, improves sealing performance and operating efficiency, extends the service life of the sealing components, reduces energy consumption and maintenance costs, and enhances the intelligence level and environmental adaptability of the actuator.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses an intelligent self-compensation sealing piston type pneumatic actuating mechanism, and relates to the technical field of pneumatic pistons, the intelligent self-compensation sealing piston type pneumatic actuating mechanism comprises a sliding piston, an air duct and a sealing ring, an air inlet in the top end of the sliding piston is connected with an air outlet through the air duct, and the air outlet is used for guiding high-pressure air into a containing groove in the inner side of the sealing ring; an annular spring in the sealing ring is attached to a sealing groove of the sliding piston, and the sealing ring is connected with the sliding piston through a first side ring and a second side ring. By installing the sliding piston, the ventilation channel, the sealing ring, the annular spring, the sealing cover, an electromagnetic valve, a first pressure sensor and a second pressure sensor, intelligent automatic compensation adjustment and accurate control over sealing pressure are achieved, the situation that the sealing ring is excessively abraded or damaged due to too high pressure is avoided, gas leakage caused by insufficient pressure is also prevented, and the service life of the sealing device is prolonged. The sealing reliability is improved, and the service life of the sealing ring is prolonged.
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