Control Valve Planar Seal Arc Through-Hole Regeneration Flow
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Solution Overview
Problem
Existing control valves with hermetic head faces construction fail to allow raw water to flow out during regeneration or rinse processes in water treatment systems, leading to inadequate water supply and complex, costly modifications in residential systems.
Innovation Solution
A control valve design featuring a valve body with rotating moving and fixed disks, where the fixed disk has multiple through-holes, including one with an arc-shaped bulge, and the moving disk has a through blind hole with an arc-shaped bulge, allowing partial overlap to enable water flow during regeneration or rinse processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hermetic head faces construction is used to ensure sealing, then sealing performance is improved, but water flow is blocked during regeneration or rinse processes
Solution Approach 1:
The fixed disk is divided into multiple through-holes with different functions: one through-hole connects to the outlet for water discharge, while another through-hole connects to the drain for waste water removal. The moving disk has corresponding through-holes and arc-shaped blind holes that segment the flow paths. This segmentation allows simultaneous achievement of sealing (when holes are aligned) and water flow (when arcs are misaligned) during different operational phases.
Solution Approach 2:
The moving disk can rotate relative to the fixed disk to dynamically change the alignment between through-holes and arc-shaped blind holes. During service status, the arcs are aligned to block water flow to the outlet. During regeneration or rinse processes, the moving disk rotates to misalign the arcs, opening the path for water to flow through the through-holes to the outlet. This dynamic adjustment resolves the contradiction between sealing and water flow.
2Reliability
If no water flows out during regeneration or rinse process, then sealing is maintained, but water supply to rear systems becomes inadequate
Solution Approach 1:
The valve body is segmented into multiple functional channels: one channel directs water to the outlet for supply to rear systems, while another channel directs water to the drain for regeneration or rinse processes. The fixed disk has through-holes that connect these channels, and the moving disk has arc-shaped blind holes that can selectively block or open these paths. This segmentation allows simultaneous maintenance of sealing (by blocking the drain channel) and adequate water supply (by opening the outlet channel).
Solution Approach 2:
The through-holes in the fixed disk and moving disk act as intermediaries that enable selective water flow. During regeneration or rinse processes, the arc-shaped blind holes are misaligned to open the path through the through-holes to the outlet, allowing water to flow to rear systems while still maintaining sealing in other channels. This intermediary mechanism resolves the contradiction between sealing and water supply quantity.
3Quantity of substance
If raw water bypass function is added to existing control valves, then water supply capability is improved, but system complexity and modification cost increase
Solution Approach 1:
The control valve is designed with multi-functionality from the outset: the fixed disk has through-holes that can serve multiple purposes (connecting to outlet for water supply, connecting to drain for regeneration/rinse), and the moving disk has arc-shaped blind holes that can dynamically control these paths. This universal design allows the valve to perform both sealing and raw water bypass functions without requiring additional connectors or modifications, thus improving water supply capability while avoiding increased system complexity.
Solution Approach 2:
The patent combines the sealing function and raw water bypass function into a single integrated valve body with a unified disk structure. The through-holes and arc-shaped blind holes are integrated into the same moving and fixed disks, allowing both functions to be controlled by a single rotating mechanism. This merging eliminates the need for separate connectors and complex modifications that would otherwise be required, resolving the contradiction between water supply capability and system complexity.
Data Source
Figure 1~4
Figure 5~8
Figure 9~10A
AI summary
Disclosed is a control valve with a planar seal structure in the field of water processing. The control valve comprises a valve body (1). The valve body (1) is provided with a water inlet (20), a water outlet (21), and a water drainage port (22). A spool with a planar seal structure is disposed in the valve body (1). The spool is provided with a fixed valve plate (3) and a movable valve plate (4). The movable valve plate (4) is rotationally fitted to the fixed valve plate (3). The fixed valve plate (3) is provided with a plurality of through holes. One through-hole (35) of the through holes is in communication with the water outlet (21). The through hole (35) is of an arc and fan shape. The outer diameter of the arc and fan shape of the through-hole (35) is greater than that of another through hole of the fixed valve plate (3). The throughhole (41) is in communication with the water inlet (20) of the valve body. The fixed valve plate (3) is provided with at least one arc communicating blind hole (42). The through holes of the fixed valve plate (3) are mutually fitted with the communicating blind hole (42). The control valve can overcome the defect that there is no raw water flowing out in a regeneration process or a washing process of a planar valve, and is applicable to all softening systems and filtering systems.