Single-Material Hand Pump Elastoplastic Elastic Part
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Solution Overview
Problem
Existing hand pumps have metal threaded springs that deform and lose resilience over time, and the recycling process is inefficient due to the need to separate metal parts from plastic components.
Innovation Solution
A novel single-material hand pump designed with an elastoplastic elastic part made of superposed elliptical columns, which contracts uniformly under pressure and has good resilience, eliminating the need for separate metal spring removal during recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal threaded springs are used in the hand pump, then the elastic part has good resilience, but the recycling process becomes complex and time-consuming due to the need to separate metal parts from plastic components
Solution Approach 1:
The patent merges the elastic part with the plastic housing by integrating a metal spring inside a plastic sleeve, forming a unified component. This allows the elastic function to be maintained while enabling the entire assembly to be recycled as a single plastic component, eliminating the need to separate metal and plastic parts during recycling.
Solution Approach 2:
The patent applies the nesting principle by placing the metal spring inside the plastic sleeve, creating a nested structure where one component is contained within another. This nested design maintains the functional benefits of the metal spring while allowing the outer plastic sleeve to protect and contain it during recycling processes.
2Reliability
If metal threaded springs are used in the hand pump, then the elastic part provides good elasticity, but the recycling cost increases due to additional separation steps
Solution Approach 1:
The patent combines the metal spring and plastic sleeve into a single integrated component, allowing recycling facilities to process the entire assembly as one material type (plastic), thereby reducing separation costs and improving the economic viability of recycling hand pumps.
Solution Approach 2:
The plastic sleeve acts as an intermediary that mediates between the metal spring and the recycling process. It protects the metal spring from direct contact with recycling equipment and allows the entire assembly to be processed through plastic recycling channels, reducing overall recycling costs.
3Ease of manufacture
If traditional elastic parts are used, then the hand pump can be manufactured with standard components, but the recycling value decreases due to mixed materials
Solution Approach 1:
The patent merges the metal spring with the plastic housing into a unified component, transforming a multi-material assembly into a single-material recyclable unit. This maintains manufacturing simplicity while maximizing recycling value by enabling the entire component to be recovered as plastic material.
Solution Approach 2:
The patent applies homogeneity by making the elastic part predominantly plastic in composition (with the metal spring contained within a plastic sleeve), creating a homogeneous material appearance that facilitates recycling. The outer plastic sleeve dominates the material composition, allowing the assembly to be treated as a plastic component throughout the recycling process.
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 elastoplastic elastic part provides consistent performance and resilience, simplifying the recycling process by eliminating the need to remove metal springs, thus saving time and improving environmental protection.
Implementation Method 1
the elastic part is arranged by superposing a plurality of elliptical columns, the elliptical columns contract under pressure and extend to both sides when the elastic part is under stress
Implementation Method 2
the elastic part is made of elastoplastic
Implementation Method 3
the air holes are arranged outside the elastic part and used to absorb or discharge the compressed air inside the elastic part
Data Source
AI summary
The present invention relates to the technical field of hand pump, in particular to a novel single-material hand pump, which includes a pressure head, a valve stem, an elastic part and a cylinder, wherein the bottom of the pressure head is fixedly connected with the valve stem, the cylinder is arranged at the bottom of the valve stem, the valve stem is connected with the cylinder in an embedded way, not only the elliptical columns contract uniformly under pressure and have good resilience, but also the elastic part is made of elastoplastic, the separate removal of metal spring is not required for saving the treatment time and improving the environmental protection, and the air holes are used for absorbing or discharging the compressed air inside the elastic part, thereby solving the problems of internal negative pressure, failure to reset the elastic part and retract the elastic part.