Adjustable Pressure Reducer Assembly With Piston Travel Limit
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Solution Overview
Problem
Existing pressure reducer assemblies are costly and require additional space, and they fail to effectively manage a wide range of fluid pressures, leading to component damage and inefficiencies in irrigation systems.
Innovation Solution
A pressure reducer assembly with an adjustable piston rod and an actuating device that allows manual or semi-automatic control of fluid pressure, incorporating a biasing means and a diaphragm to maintain a constant output pressure, and function as a shut-off valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a pressure reducer assembly is mounted with fluid application devices, then the inlet pressure can be reduced to a lower output pressure, but the assembly incurs additional cost and space
Solution Approach 1:
The patent combines the pressure reducer assembly with the fluid application device into a single integrated unit. The pressure reducer chamber is formed within the device housing, and the piston rod is directly coupled to the valve mechanism, eliminating the need for a separate external pressure reducer assembly and reducing overall system complexity and space requirements
Solution Approach 2:
The integrated assembly performs multiple functions: pressure reduction, flow control, and shut-off capability. The valve member can operate in different modes (normal flow mode and off mode) while simultaneously maintaining reduced output pressure, making the device versatile and reducing the need for additional components
2Stress or pressure
If the piston rod is allowed to move axially to control pressure, then pressure reduction is achieved, but the maximum axial movement must be precisely controlled to prevent damage
Solution Approach 1:
The adjusting device is configured to pre-limit the axial movement range of the piston rod before operation begins. By setting the maximum axial displacement in advance through the adjusting mechanism, the system prevents over-travel that could cause component damage, ensuring reliable operation throughout the device lifecycle
Solution Approach 2:
The interaction protrusion on the piston rod engages with the adjusting device to provide mechanical feedback that limits axial movement. When the piston rod reaches its maximum predetermined displacement, the protrusion contacts the adjusting device, automatically stopping further movement and preventing damage to internal components
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 assembly provides reliable, cost-effective pressure reduction and shut-off functionality, preventing component damage and ensuring consistent fluid delivery across varying inlet pressures.
Implementation Method 1
a spring element configured to allow movement of the piston rod along the central axis
Implementation Method 2
The diaphragm is exposed to the output pressure in the pressure reducer chamber... The output pressure changes cause diaphragm movement
Data Source
AI summary
A pressure reducer assembly (100) for adjustably reducing a pressure of a fluid includes a pressure reducer body (110) defining at least a part of a pressure reducer chamber (120) along a central axis (X-X′). The pressure reducer chamber (120) includes an inlet section (122) and an outlet section (124) fluidly coupled with the inlet section (122). A biasing means piston rod (132) having a center (Y) along the central axis (X-X′) connects the inlet section (122) with the outlet section (124) and is axially moveable with respect to the pressure reducer body (110). The pressure reducer assembly (100) is characterized in that the piston rod (132) includes an interaction protrusion (133). The pressure reducer assembly (100) further includes an adjusting device (140) comprising an actuating part (141, 143) and an adjusting part (142). The adjusting part (142) is configured to functionally interact with the interaction protrusion (133) such that a maximum axial movement of the piston rod (132) is adjustable by actuating the actuating part (141), particularly by manually actuating the actuating part (141).