Segmented Collapsible Bladder Pump for Easier Pressing and Recovery
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Solution Overview
Problem
Conventional bladder-type all-plastic pumps suffer from hard pressing and unsatisfactory resilience due to a low conversion rate of pressing force into upward resilience force, leading to incomplete product discharge.
Innovation Solution
A structurally improved bladder-type press pump with a collapsible bladder formed by connecting segments through weakened portions, allowing efficient conversion of pressing force into upward resilience force, and optionally incorporating an elastic restoring mechanism to enhance resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional bladder structure is used, then the pump achieves full plasticization and recyclability, but the pressing force conversion rate is low and resilience performance is unsatisfactory
Solution Approach 1:
The bladder is divided into multiple segments (first segment, second segment, third segment, etc.) connected by weakened portions. This segmentation allows controlled deformation during pressing while maintaining structural integrity for resilience recovery, resolving the contradiction between manufacturability and reliability.
Solution Approach 2:
The weakened portions are designed with specific structural parameters (notch depth, wall thickness reduction) that change the mechanical properties of the bladder. These parameter changes enable the bladder to achieve both ease of manufacturing and improved resilience by controlling how force is distributed and converted during operation.
2Productivity
If pressing force is applied to collapse the bladder, then product is discharged, but a considerable part of pressing force is converted into radial pulling force instead of upward resilience force
Solution Approach 1:
By segmenting the bladder structure with weakened portions between segments, the patent directs the pressing force more efficiently. The weakened portions act as hinges that guide deformation, reducing radial pulling force and increasing the conversion of pressing force into useful upward resilience force for product discharge.
Solution Approach 2:
The weakened portions serve as intermediary elements between the pressing force application and the bladder collapse. These intermediaries transform the radial pressing force into more effective vertical motion, reducing energy loss and improving force conversion efficiency.
3Productivity
If the bladder is compressed for product discharge, then pumping action is achieved, but the bladder cannot be restored normally before products in containers are used up
Solution Approach 1:
The segmented structure with weakened portions allows the bladder to collapse efficiently during pumping while maintaining the structural integrity needed for restoration. Each segment can deform independently through the weakened portions, enabling complete product discharge while preserving the bladder's ability to return to its original state for repeated use.
Solution Approach 2:
The bladder structure is designed to be dynamic during operation - the weakened portions allow temporary deformation during pressing for product discharge, while the overall structure maintains enough rigidity to restore its original shape when the pressing force is removed, enabling multiple pumping cycles.
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 improved bladder-type press pump reduces the required pressing force for collapse and enhances resilience performance, ensuring complete product discharge and ease of restoration.
Implementation Method 1
the collapsible bladder is configured such that the adjacent collapsible bladder is collapsed when a pressing force is applied directly or indirectly to the collapsible bladder, and the collapsible bladder is stretched when the pressing force is removed, wherein at least two adjacent segments are connected to each other by means of a weakened portion
Data Source
AI summary
A pumping device, comprising an actuator and a closure, the actuator being connected to the actuator. The pumping device further comprises a collapsible bladder, the collapsible bladder being formed by connecting a plurality of segments, and an included angle being formed between two adjacent segments, wherein at least two adjacent segments are connected to each other by means of a weakened portion.