Component Feed Nozzle Membrane Seal Pressure Control
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Solution Overview
Problem
Existing component feed nozzles lack precision in reacting to changes in component quantity due to inadequate pressure application and sealing mechanisms, leading to inefficiencies in component flow and pressure regulation.
Innovation Solution
A component feed nozzle design featuring a piston-shaped closing body with a membrane seal that allows complete surface pressure application, a sliding bearing for reduced friction, and a pressure chamber with a fluid duct and throttle for pressure balance, ensuring consistent component pressure and vibration dampening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional closing body is used with inadequate sealing mechanism, then the structure is simple, but the precision in reacting to pressure changes is poor
Solution Approach 1:
The patent employs a membrane seal (thin film) that completely covers the closing body, allowing pressure to act on the entire surface area of the closing body. This membrane structure provides precise pressure response while maintaining a relatively simple overall device structure, as the membrane itself is a simple flexible element that transmits pressure efficiently.
2Reliability
If the closing body is fixed with multiple seals, then sealing is reliable, but friction increases and movement precision decreases
Solution Approach 1:
The membrane seal acts as a flexible film that provides reliable sealing between the closing body and housing while allowing the closing body to move freely. The membrane conformally seals around the closing body contours, ensuring reliable sealing without requiring multiple rigid seal elements that would increase friction and reduce movement precision.
3Speed
If pressure is applied only to part of the closing body surface, then the structure is simple, but the responsiveness to pressure changes is insufficient
Solution Approach 1:
The membrane seal completely covers the closing body, enabling pressure to be applied to the entire surface area of the closing body simultaneously. This maximizes the effective pressure area, significantly improving responsiveness to pressure changes without requiring complex pressure distribution mechanisms, as the membrane naturally transmits pressure uniformly across its surface.
4Reliability
If the closing body moves with high friction, then sealing is maintained, but the response time to pressure changes increases
Solution Approach 1:
The membrane seal provides continuous sealing contact with the closing body while allowing smooth relative movement. The flexible nature of the membrane reduces friction compared to rigid seal elements, enabling the closing body to respond quickly to pressure changes while maintaining reliable sealing throughout the movement range.
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 design enhances the nozzle's responsiveness to pressure changes, providing precise control over component flow and preventing membrane seal failure under high pressures, resulting in improved precision and reliability.
Implementation Method 1
the component pressure can be applied to the complete effective surface of the membrane
Implementation Method 2
the guide section can come partially in contact with the housing. The closing body has, furthermore, a closing section on the component outlet side
Implementation Method 3
a fluid duct, opening into the pressure chamber, is formed in the housing. A pressurized fluid, for example nitrogen, can be fed to the pressure chamber through the fluid duct. A pressure balance then prevails at the membrane between the component pressure and the fluid pressure in the pressure chamber
Data Source
AI summary
A component feed nozzle includes a housing, which has a component inlet and a component outlet, a piston-shaped closing body, which is slidably supported in the housing and which can be moved back and forth axially. The component outlet is closed by the front end of the closing body in a first position and the component outlet is released or opened in a second position. The component feed nozzle has a membrane seal, which is fastened to the rear end of the closing body and to the housing in such a way that the closing body is completely on one face of the membrane seal. The housing and/or the closing body are designed in such a way that the component reaches all surfaces of the closing body and thus the component pressure is applied to the complete effective surface of the membrane.