Pinch Valve Body Interface for Simplified Sleeve Maintenance
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Solution Overview
Problem
Existing pinch valve structures are difficult to maintain due to complex disassembly and assembly processes, requiring complete removal from the pipeline for maintenance tasks like replacing the sleeve and cleaning mechanical parts, as the interface is centered on the flow path axis perpendicular to the closure member's movement.
Innovation Solution
The valve body interface is relocated to the center line of the flow path in the flow direction, allowing for easier disassembly and assembly by positioning the actuators so that the sleeve can be removed from the compression rod, with a design that includes draw bars and guide slots for controlled movement and simplified installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the valve body interface is positioned on the center axis of the flow path perpendicular to the closure member's movement, then the valve structure is compact, but the maintenance complexity increases and complete removal from pipeline is required
Solution Approach 1:
The valve body interface is repositioned from a perpendicular orientation to the closure member movement to a parallel orientation, aligning the interface with the direction of closure member travel. This dimensional reorientation allows the closure member to be accessed and removed through the valve body interface without requiring complete valve disassembly, thereby improving maintenance accessibility while preserving compact structure.
2Ease of manufacture
If the valve body is divided into two parts with interface on the center axis perpendicular to closure member movement, then the valve can be manufactured with standard casting methods, but the disassembly and assembly process becomes troublesome and time-consuming
Solution Approach 1:
The interface between the two valve body parts is repositioned to align with the closure member's movement direction rather than being perpendicular to it. This allows the closure member and sleeve to be accessed and replaced by simply opening the valve body halves, dramatically reducing maintenance time without requiring complex disassembly procedures or complete valve removal from the pipeline.
3Reliability
If the sleeve is positioned on the actuator side of the valve body, then the closure mechanism is effective, but the sleeve removal is complicated by flanges and fastening parts requiring complete valve removal
Solution Approach 1:
The valve body interface is repositioned to align with the closure member movement direction, creating an open access path for the sleeve along the same dimension in which the closure member travels. This allows the sleeve to be removed by simply separating the valve body halves and pulling the sleeve out along the movement axis, eliminating the need to deal with flanges and fastening parts and enabling quick sleeve replacement without complete valve removal.
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
This design simplifies maintenance by enabling the sleeve to be replaced and the valve body to be opened in the flow direction, reducing the complexity of maintenance tasks and allowing for easier installation and operation.
Implementation Method 1
the member 15, which performs the work movement of the actuator, is attached to the first compression rod 7
Implementation Method 2
a flow path sleeve manufactured from rubber by vulcanization, installed inside the body
Data Source
Figure 1
AI summary
The invention relates to a pinch valve, which is intended for adjusting the flow of liquids or liquid substances containing solid materials. The pinch valve body (1) comprises body halves (2) and (3), the interface of which is located at the point of the flow path (4) of the valve on a plane which is in the direction of the movement of the actuator (6). The draw bar (9) comes off when the body half (3) of the pinch valve is removed, and the sleeve can consequently be removed from the compression rods (7) and (10) by pulling the pull loops off from over the compression rods (7) and (10).