Intermittent Air Discharge Circuit With Sequenced Pilot Valve Actuation
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Solution Overview
Problem
The existing intermittent air discharge apparatus experiences unstable operations due to simultaneous supply of compressed air to both the main valve and pilot valve, leading to potential premature switching and pressure drops affecting the stability of the valves.
Innovation Solution
The design includes a main valve and a pilot valve configured to switch independently, where the main valve cannot switch until after the pilot valve has switched, and pressure drops do not affect the operations, ensuring stable operation by controlling the air supply paths and exhaust ports to maintain consistent pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If compressed air is simultaneously supplied to both the main valve and pilot valve from the air supply port, then the air discharge function is achieved, but the valve operations become unstable due to premature switching and pressure drops
Solution Approach 1:
The air supply path is segmented into two independent paths: one path supplies air to the pilot valve first, and another path supplies air to the main valve after the pilot valve has switched. This segmentation ensures that the pilot valve switches before the main valve, preventing premature switching and maintaining operational stability while achieving the air discharge function.
2Ease of operation
If the pilot valve switches before the main valve due to simultaneous air supply, then the air discharge sequence is established, but the main valve operation becomes unstable due to pressure drops
Solution Approach 1:
The system performs preliminary action by supplying air to the pilot valve first, causing it to switch before the main valve. The air supply to the main valve is delayed until after the pilot valve has completed its switching action. This preliminary action ensures proper sequencing and prevents pressure drops from affecting main valve operation, thereby maintaining reliability while establishing the correct switching sequence.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration ensures stable operation of both the main valve and pilot valve, preventing premature switching and minimizing the impact of pressure drops, resulting in reliable intermittent air discharge.
Implementation Method 1
compressed air supplied to the air supply port is supplied to the discharge pilot chamber of the main valve and the air supply stop pilot chamber of the pilot valve
Data Source
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AI summary
An intermittent air discharge fluid circuit (10) includes a main valve (12) including a discharge pilot chamber (14) and a pilot valve (18) including an air supply pilot chamber (20). The main valve is switched between a first position in which the air supply pilot chamber is connected to an air supply source (30) and a discharge port (36) is open to atmosphere, and a second position in which the air supply pilot chamber is open to atmosphere and the discharge port is connected to the air supply source. The pilot valve is switched between a first position in which the discharge pilot chamber is open to atmosphere and a second position in which the discharge pilot chamber is connected to the air supply source.