Valve Core Removal Tool With Screw-Lift Locking Mechanism
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Solution Overview
Problem
Existing methods for removing faulty or corroded valve cores from valve bodies are inconvenient, prone to breaking the core, and require excessive labor, often causing the core to get stuck, which affects production efficiency.
Innovation Solution
A valve core removal tool featuring a sleeve with an inner cylinder, locking portions, and a screw rod mechanism that allows the inner cylinder to slide and lift the valve core without manual force, using locking portions and jack screws to secure the core before lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual pulling or tapping force is used to remove the valve core, then the valve core can be extracted, but the valve core is prone to breaking and getting stuck inside the valve body
Solution Approach 1:
The patent introduces an inner cylinder as an intermediary tool between the operator and the valve core. The inner cylinder engages with the valve core through locking portions that lock into grooves on the valve core surface, providing a secure grip that distributes force evenly. This intermediary mechanism eliminates the need for direct manual pulling or tapping, preventing valve core breakage while enabling reliable extraction.
2Ease of operation
If tools such as pliers are used to clamp the valve core, then the valve core can be gripped, but the valve core is prone to breaking due to uncontrolled force
Solution Approach 1:
The inner cylinder serves as a controlled intermediary gripping mechanism. Its locking portions engage with grooves on the valve core surface, distributing the gripping force uniformly around the valve core circumference. This controlled engagement prevents the concentrated stress points that occur with pliers, eliminating the risk of valve core breakage while maintaining secure grip.
Solution Approach 2:
The patent changes the gripping mechanism from direct mechanical clamping (pliers) to groove-based engagement (locking portions). The locking portions are designed to fit into grooves machined on the valve core surface, transforming the gripping action from external compression to internal engagement. This parameter change in the gripping method allows for controlled force application that prevents valve core deformation and breakage.
3Productivity
If the valve core is removed by hand or simple tools, then the removal process can be completed, but it takes too long and increases labor intensity
Solution Approach 1:
The inner cylinder with its locking portions acts as a specialized intermediary tool designed specifically for valve core extraction. The locking portions engage with grooves on the valve core, and the screw rod mechanism provides mechanical advantage for lifting. This dedicated intermediary tool enables rapid, one-person operation that eliminates time-consuming manual pulling or tapping, significantly improving productivity while reducing labor intensity.
Solution Approach 2:
The patent employs a screw rod mechanism that provides mechanical advantage through partial rotation. By rotating the screw rod a limited distance, the operator achieves sufficient lifting force to extract the valve core without requiring excessive manual effort. This partial action principle allows a single operator to perform the extraction quickly and easily, improving both productivity and ease of operation.
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 tool enables easy and labor-saving removal of valve cores without breaking them, reducing labor intensity and production downtime.
Implementation Method 1
a screw rod, axially arranged on the inner cylinder, with one end connected to the inner cylinder and the other end extending out of the sleeve; where a fixing portion is provided at the bottom opening of the sleeve, the inner cylinder is moved above the fixing portion, the locking portions move inward for locking, the screw rod rises along the sleeve, and the inner cylinder moves upward along the axial direction of the sleeve away from a bottom of the sleeve based on the movement of the screw rod
Data Source
AI summary
Disclosed is a valve core removal tool, including a sleeve with a bottom opening; an inner cylinder with a bottom opening sleeved inside the sleeve, moving along an axial direction of the sleeve; locking portions, provided on both sides of the inner cylinder and moving along a radial direction of the inner cylinder; and a screw rod, axially arranged on the inner cylinder, with one end connected to the inner cylinder and the other end extending out of the sleeve, where a fixing portion is provided at the bottom opening of the sleeve, the inner cylinder is moved above the fixing portion, the locking portions move inward for locking, the screw rod rises along the sleeve, and the inner cylinder moves upward along the axial direction of the sleeve away from a bottom of the sleeve based on the movement of the screw rod.