Pivotable Pinch Valve Casings for Sleeve Maintenance
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Solution Overview
Problem
Conventional mechanical pinch valves experience sleeve deformation and breakage due to repeated opening and closing cycles, requiring maintenance and causing downtime, especially in heavy industrial applications.
Innovation Solution
A pinch valve design with pivotably mounted upper and lower casings that allows for easy replacement of the sleeve, featuring a synchronization mechanism for pinching the sleeve and a locking element for secure operation, enabling on-site maintenance without dismounting the valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mechanical pinch valves apply pressure using a movable closure bar to flatten the sleeve, then the valve can effectively stop fluid flow, but the sleeve loses flexibility and cracks or breaks after multiple opening and closing cycles
Solution Approach 1:
The valve body is divided into an upper casing and a lower casing that can be separated from each other. This segmentation allows the sleeve to be accessed and replaced without removing the entire valve from the pipeline, thereby extending the service life of the sleeve by enabling easy replacement rather than forcing the sleeve to endure repeated stress without maintenance.
Solution Approach 2:
The upper casing is made pivotable relative to the lower casing, allowing dynamic opening and closing of the valve body. This dynamic design facilitates easy access to the sleeve for replacement, improving the overall reliability of the system by allowing quick maintenance without full disassembly.
2Ease of repair
If the sleeve is replaced by dismounting the valve from the site and moving it to a workshop, then the sleeve can be properly changed, but downtime and manpower costs increase
Solution Approach 1:
By dividing the valve into separable upper and lower casings, the invention enables the sleeve to be replaced in situ without removing the entire valve from the pipeline. This segmentation directly addresses the contradiction by making repair easy while minimizing downtime.
Solution Approach 2:
The pivotable connection between upper and lower casings acts as an intermediary mechanism that allows the valve body to be opened for sleeve replacement while remaining connected to the pipeline. This intermediary design enables maintenance without full dismounting, reducing both time and manpower requirements.
3Ease of operation
If the valve is designed with fixed upper and lower casings, then the structure is simple and robust, but sleeve replacement requires complete disassembly and relocation to a workshop
Solution Approach 1:
The valve body is segmented into upper and lower casings that can be separated, providing ease of sleeve replacement. This segmentation adds minimal complexity compared to a fixed design, as it only requires a connection interface between the two casings.
Solution Approach 2:
The upper casing is designed to be pivotable relative to the lower casing, adding a dynamic element that enables easy access to the sleeve. This dynamic feature increases operational convenience while maintaining relatively simple overall structure through the use of a straightforward pivot connection.
Data Source
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AI summary
The present disclosure relates to a pinch valve having upper and lower casings respectively supporting upper and lower pinch elements. The upper and lower casings are adapted for receiving a sleeve. A synchronization mechanism drives movements of the upper and lower pinch elements for pinching the sleeve. The upper and lower casings are connected by a pivot allowing pivoting of one or the other of the upper and lower casings for opening of the pinch valve, and for ease of access to the sleeve for maintenance purposes.