Sliding Valve Pivoting Support Unit Prevents Deformation
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Solution Overview
Problem
Existing sliding valves experience relative movement between support elements under pressure when the valve plate is pressed onto the valve seat, leading to undesirable particle generation and potential deformation of supporting structures.
Innovation Solution
A sliding valve design where the support unit pivots about a rotational axis, engaging either the rear or front support elements in the second position of the valve rod, preventing relative movement between support elements and allowing direct force transmission to the valve body, thus avoiding deformation and particle generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve plate is pressed onto the valve seat using conventional support elements, then the valve sealing is improved, but relative movement between support elements occurs under pressure causing particle generation and potential deformation
Solution Approach 1:
The support unit is designed to pivot about a rotational axis, transitioning from a static configuration to a dynamic one. In the closed position, the support unit rotates to engage both front and rear support elements simultaneously, allowing the structure to adapt to pressure forces without relative movement between elements, thereby preventing particle generation while maintaining reliable sealing
2Reliability
If the valve plate is pressed onto the valve seat using conventional support elements, then the valve sealing is improved, but deformation of supporting structures occurs
Solution Approach 1:
The support unit pivots about a rotational axis positioned such that in the closed position, both front and rear support elements are engaged simultaneously. This dynamic configuration distributes pressure forces evenly across the supporting structures, preventing deformation while ensuring reliable valve sealing
Solution Approach 2:
The front and rear support elements are combined into a single pivoting support unit that engages both elements simultaneously in the closed position. This merging allows the supporting structures to work together as a unified system, distributing loads and preventing deformation of individual components
Data Source
AI summary
A sliding valve including a valve body (1) with a wall having a valve opening (3) and a valve seat (4) surrounding the valve opening (3), a valve plate (5), at least one valve rod (8) that can move in the axial direction and can be moved for closing the valve starting from a first position in which the valve plate (5) assumes its open position, to a second position in which the valve plate (5) assumes an intermediate position covering the valve opening (3) but lifted from the valve seat (4), into a third position in which the valve plate (5) assumes its closed position. At least one lifting element (10, 11) moves the valve plate (5) from its intermediate position into its closed position, and at least one support unit (12) with at least one front and at least one rear support element (14, 13) that interact in the closed position of the valve plate (5) with at least one valve-body-fixed, front support element and at least one valve-body-fixed, rear support element (16, 15). In the second position of the valve rod (8), either the rear support elements (13, 15) or the front support elements (14, 16) are in engagement and the other of these support elements (14, 16; 13, 15) are spaced apart from each other. When moving the valve rod (8) from its second to its third position, the support unit (12) pivots about a rotational axis (17) from a starting position in which the other support elements (14, 16; 13, 15) are spaced apart from each other into an end position in which the other support elements (14, 16; 13, 15) contact each other.