Valve Device Drain Chamber Segmentation for Fluid Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid pressure control devices with multiple valve devices face complexity in piping due to the need for separate drain ports for each valve, as the drain port on the drain chamber wall can be closed by the spool, preventing discharge of drain fluid from other valve devices regardless of the spool position.
Innovation Solution
A valve device with a valving element and a drain chamber that includes a drain port and a communicating passage allowing drain fluid to be discharged regardless of the spool position, facilitated by a drain passage connecting to a separate fluid storage portion, ensuring continuous fluid flow even when the spool is restricted by the drain chamber wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drain port is formed in the drain chamber wall facing the spool, then the spool can be restricted by the drain chamber wall, but the drain port will be closed by the spool preventing drain fluid discharge
Solution Approach 1:
The drain chamber wall is segmented into two functional regions: a first region that restricts spool movement and a second region that forms the drain port. This segmentation allows the spool to be restricted by the first region while the drain port in the second region remains accessible for drain fluid discharge, resolving the contradiction between spool positioning reliability and drain port accessibility.
2Adaptability or versatility
If multiple valve devices are provided in a fluid pressure control device, then control functionality is enhanced, but piping complexity increases due to multiple drain ports
Solution Approach 1:
The drain chamber is designed to serve multiple functions: it restricts spool movement through its first region and provides a common drain port for multiple valve devices through its second region. By making the drain chamber multi-functional, the system can handle drain fluid from multiple valve devices through a single drain port, reducing piping complexity while maintaining enhanced control functionality.
3Ease of operation
If the drain chamber wall serves as a movement restricting portion, then spool movement is controlled, but the drain port may be blocked depending on spool position
Solution Approach 1:
The drain chamber wall is divided into a first region for movement restriction and a second region for drain port formation. This segmentation ensures that the spool interacts with the first region for controlled movement while the drain port in the second region remains unobstructed, maintaining reliable drain fluid discharge regardless of spool position.
Solution Approach 2:
The segmented structure of the drain chamber wall acts as an intermediary solution, separating the movement restriction function from the drain port function. This intermediary structure allows both functions to coexist without interference, enabling the spool to be controlled while ensuring continuous drain fluid discharge.
Data Source
AI summary
A valve device includes a valve body, a drain chamber wall configured to define a drain chamber, a drain port formed in the drain chamber wall facing the valving element, and a drain passage configured to guide drain fluid from another valve device to the drain chamber, wherein at least one of the drain chamber wall and the valving element includes a communicating passage configured to allow the drain port to communicate with the drain chamber when the movement of the valving element is restricted by the drain chamber wall.