Poppet Switch Valve Stroke Adjustment Mechanism
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Solution Overview
Problem
Poppet switch valve devices experience variations in fluid flow rate due to dimensional tolerances in valve seats and rods, leading to increased power consumption when using solenoids for actuation.
Innovation Solution
The device includes a tubular valve body with coaxially coupled first and second valve rods, a solenoid, and a restriction mechanism using a nut to adjust and stabilize the strokes of the valve members, limiting flow rate variations and reducing power consumption by allowing precise control over the movement of the valve rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If dimensional tolerances are allowed in valve seats and rods during manufacturing, then manufacturing cost and ease of manufacture improve, but fluid flow rate variations increase and solenoid power consumption increases
Solution Approach 1:
The invention changes the parameter of stroke length by providing an adjustment mechanism that allows the valve rod to be positioned at different axial locations. This enables compensation for dimensional tolerances in valve seats and rods, ensuring consistent valve member strokes and flow rates while reducing the power required by the solenoid to achieve proper valve actuation.
2Ease of manufacture
If dimensional tolerances are allowed in valve seats and rods during manufacturing, then manufacturing cost and ease of manufacture improve, but fluid flow rate variations increase
Solution Approach 1:
The adjustment mechanism enables modification of the stroke parameter by changing the axial position of the valve rod. This compensates for variations in valve seat and rod dimensions, maintaining consistent flow rates despite manufacturing tolerances.
Solution Approach 2:
The invention performs preliminary adjustment of the valve rod position during assembly or maintenance. By pre-setting the correct stroke length before operation, the system compensates for dimensional tolerances and ensures consistent flow rates without requiring high-precision manufacturing.
3Manufacturing precision
If valve rods are rigidly fixed to ensure precise stroke control, then flow rate consistency improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The invention transitions from a rigid fixed connection to a dynamic adjustable connection. The adjustment mechanism allows the valve rod position to be modified as needed, providing both precision in stroke control and flexibility for compensation of tolerances, while maintaining relatively simple device structure.
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 configuration effectively limits fluid flow rate variations and reduces the power required for solenoid actuation, enhancing the stability and efficiency of the poppet switch valve device.
Implementation Method 1
a solenoid including a coil and a plunger moved by excitation of the coil
Data Source
AI summary
A poppet switch valve device includes a valve body, a first valve rod including a first valve member, a second valve rod including a second valve member, and a solenoid. When a jig engages with an engagement portion of the first valve rod and rotates the first valve rod so that an internally-threaded hole formed in the first valve rod engages with and moves forward and backward relative to an external thread formed on an outer circumferential surface of the second valve rod, the first valve rod is moved relative to the second valve rod in the axial direction. The poppet switch valve device further includes a restriction portion configured to restrict movement of the first valve rod relative to the second valve rod in the axial direction after the first valve rod is moved relative to the second valve rod in the axial direction using the jig.