Bidirectional Valve Member Driving Device Pneumatic Actuation
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Solution Overview
Problem
Existing two-way gate valve mechanisms are complex, difficult to assemble, and lack precision due to numerous components and intricate mechanical actions, particularly in the eccentric lateral movement of sealing plates.
Innovation Solution
A valve member driving device with fewer components, featuring a main body with two non-communicating gas chambers, piston rods, guide rods, and a valve cylinder, allowing for bidirectional movement through simpler gas-inlet and flow passage designs, eliminating the need for rotational or lateral mechanical complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pneumatic cylinder with crank-like operating bodies and push-pull modules is used to enable bidirectional sealing, then the valve can selectively seal two entrances, but the mechanism becomes complicated with many components and is difficult to assemble
Solution Approach 1:
The patent combines two separate pneumatic cylinders into a single integrated valve body with two independent gas chambers. The valve member itself serves as the sealing element for both entrances, eliminating the need for separate push-pull modules and crank-like operating bodies. This merging of functions reduces the component count from multiple discrete parts to a unified structure with fewer moving parts.
Solution Approach 2:
The valve member is designed to perform multiple functions: it acts as both the sealing element and the operating body for bidirectional control. The single valve member can seal either the first entrance or the second entrance by moving laterally, eliminating the need for separate operating bodies and reducing overall device complexity while maintaining adaptability.
2Adaptability or versatility
If crank-like operating bodies and rotating shafts are used for eccentric lateral movement of sealing plates, then bidirectional sealing is achieved, but the assembly precision becomes difficult to maintain
Solution Approach 1:
The patent replaces the complex mechanical system of crank-like operating bodies and rotating shafts with a simplified pneumatic actuation system. Two independent pneumatic cylinders directly drive the valve member laterally without intermediate mechanical linkages. This substitution eliminates the need for precise mechanical alignment and reduces assembly precision requirements while maintaining the bidirectional sealing function.
Solution Approach 2:
The invention extracts and removes the unnecessary intermediate mechanical components (crank-like operating bodies, rotating shafts, push-pull modules) from the system. By directly connecting the pneumatic cylinders to the valve member, the design eliminates the complex transmission mechanisms that previously required high assembly precision, keeping only the essential sealing function.
3Adaptability or versatility
If multiple operating bodies and sealing plates are used for bidirectional operation, then the valve can seal either entrance, but the mechanism requires intricate actions that cannot be carried out accurately
Solution Approach 1:
The valve member is designed to perform its own operation without requiring separate operating bodies. By moving the valve member laterally between two positions, it automatically seals either the first or second entrance based on which pneumatic chamber is pressurized. This self-operating mechanism eliminates intricate multi-component actions and improves operational reliability through a simple, direct control system.
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
The solution reduces assembly complexity and enhances precision by using fewer components and simpler actions, enabling accurate bidirectional movement of the valve member without relying on rotational or lateral mechanical mechanisms.
Implementation Method 1
gas entering the two gas chambers from the first gas-inlet opening can push the first piston rod and the second piston rod toward the extended position
Implementation Method 2
The valve-cylinder piston rod is provided in the valve cylinder in an extensible and retractable manner and is partially exposed from the valve cylinder. The direction in which the valve-cylinder piston rod is extended or retracted and the direction in which the first piston rod is extended or retracted form a predetermined included angle
Data Source
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AI summary
A valve member driving device (10) capable of bidirectional movement includes: a main body (11) with two gas chambers (12), a first gas-inlet opening (13), a first gas-inlet channel (14), a second gas-inlet opening (17), and a second gas-inlet channel (18); a first piston rod (21) with a first flow passage (22); a second piston rod (25) with a second flow passage (26); a first guide rod (31) extending into the first flow passage (22) at one end and having a gas socket (32) and a gas hole (33) in communication with the gas socket (32); a second guide rod (35) extending into the second flow passage (26) at one end and having a gas-guiding flow passage (36); a valve cylinder (41) fixedly provided on the first piston rod (21) and having a valve-cylinder gas chamber (42), an advance channel (43), a withdrawal channel (44), and a valve-cylinder piston rod (45); and a valve member fixedly provided on the valve-cylinder piston rod (45).