Vacuum Ejector Seal Valve for High-Pressure Break Air
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Solution Overview
Problem
Conventional vacuum ejectors face challenges in reliably releasing workpieces and maintaining seal integrity, especially when high-pressure break air is required to remove stuck workpieces or dust, and there is a need for a configuration that can adapt to varying break air pressures without unnecessary complexity or cost.
Innovation Solution
A vacuum ejector design that includes a seal valve mechanism with a piston and valve plug configuration, allowing the seal valve to remain closed even under high break pressure, and an optional detachable seal valve unit that can be attached for high-pressure applications, simplifying the apparatus configuration based on intended use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal valve mechanism is added to prevent break air from flowing into the vacuum generation mechanism, then seal integrity is maintained under high pressure, but the device complexity and cost increase
Solution Approach 1:
The patent applies the taking out principle by making the seal valve unit detachable and optional. The seal valve can be extracted or removed from the system when high-pressure break air functionality is not required. This allows the basic vacuum ejector to remain simple and cost-effective for standard applications, while the seal valve unit can be added only when needed for high-pressure applications.
Solution Approach 2:
The patent applies dynamics by designing the seal valve unit as an optional, detachable component rather than a fixed permanent part. The configuration of the apparatus can dynamically change based on the specific application requirements - the seal valve unit can be attached when high-pressure break air is needed and detached when it is not, allowing flexibility in device complexity.
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 ensures reliable sealing of the negative pressure flow path even under high break pressure conditions, allowing for efficient removal of workpieces and dust while enabling flexible configuration based on the need for high-pressure break air, thus optimizing the vacuum ejector's performance and cost-effectiveness.
Implementation Method 1
generates negative pressure by causing compressed air to flow through a diffuser (also referred to as an ejector portion or vacuum generation mechanism)
Implementation Method 2
the seal valve mechanism is configured to enter an open state due to supply of the supply air from the supply valve, and enter a closed state when the supply of the supply air from the supply valve stops
Data Source
AI summary
In a vacuum ejector provided with a seal valve mechanism between a vacuum generation mechanism and a break flow path, the seal valve mechanism includes a valve plug that is biased toward a sealing opening from the break flow path side to block the seal opening, and is configured to open the seal opening by moving the valve plug away from the seal opening using a piston portion that operates according to supply air supplied from the vacuum generation mechanism.