Rotary Disc Diverter Valve With Seal-Shielded Abrasive Flow
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Solution Overview
Problem
Conventional diverter valves for bulk materials face issues with abrasive wear, inability to transfer between reservoirs with material present, and rapid deterioration of seals due to direct exposure to abrasive flows, leading to dust escape and reduced operational life.
Innovation Solution
A diverter valve with a frusto-conically shaped inlet housing and rotating disc design that protects seals from direct contact with the flow, allowing for seamless transfer without evacuating the valve body and preventing external leakage, featuring seals located behind the rotating disc to prevent abrasive wear and maintain system enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seals are directly exposed to abrasive material flow to control dust escape, then dust containment is improved, but seal durability deteriorates rapidly
Solution Approach 1:
The rotating disc serves as an intermediary barrier between the seals and the abrasive bulk material flow. The disc is positioned such that it blocks the direct path of abrasive particles to the seals, while still allowing the seals to function in controlling dust escape. This mediator protects the seals from direct abrasive contact, extending their operational life while maintaining dust containment effectiveness.
2Adaptability or versatility
If valve housing is evacuated to enable transfer between reservoirs, then material transfer capability is improved, but energy consumption increases due to purging requirements
Solution Approach 1:
The rotating disc provides a dynamic sealing mechanism that can adapt its position to enable material transfer between reservoirs without requiring complete evacuation of the valve housing. The disc rotates to align openings with different outlet ports, allowing material to flow through the valve body while maintaining seals in non-selected ports. This dynamic positioning eliminates the need for energy-intensive purging operations.
3Ease of operation
If sliding disc is used to block non-selected ports, then flow direction control is improved, but abrasive wear on disc increases
Solution Approach 1:
The disc is designed with a curved, frustoconical shape rather than a flat sliding disc. This curved geometry allows the disc to rotate smoothly on its axis while the opening in the disc directs material flow to selected outlets. The curved surface distributes abrasive wear more evenly and reduces stress concentration, extending the disc's operational life while maintaining effective flow direction control.
4Adaptability or versatility
If inflatable seals are deflated to evacuate housing, then material transfer is enabled, but dust escape increases
Solution Approach 1:
The rotating disc provides continuous dynamic sealing that maintains dust containment throughout the valve housing during operation and during reservoir transitions. Unlike inflatable seals that must be deflated for evacuation, the rotating disc mechanism maintains its sealing function while allowing the valve to switch between reservoirs, preventing dust escape without requiring housing evacuation.
Data Source
AI summary
A diverter valve is provided for use in directing a flow of bulk material from a source to at least one receiver. Included in the present diverter valve is an inlet housing having an inlet port and partially defining a valve chamber, an outlet housing connected to the inlet housing, having at least one outlet port and defining an end of the valve chamber. A rotating disc is rotatably disposed in the chamber and constructed and arranged for selectively creating fluid communication between the inlet port and diverting the flow to a selected one of the at least one outlet port.