Spring Foam Pump with External Spring and Integrated Piston
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Solution Overview
Problem
Existing foam pumps in the cosmetics industry face issues with fluid contamination due to spring contact and safety concerns, particularly in high-temperature environments, and are complex and costly.
Innovation Solution
A spring foam pump design where the spring is sleeved outside the foam channel, with an integral air and liquid pump piston structure, reducing the risk of contamination and eliminating the need for high sealing requirements, and incorporating a simpler linkage mechanism for safer operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the spring is placed in the fluid flow channel (traditional structure), then the foam pump can be reset after being pressed, but the spring is in contact with the fluid for a long time which may lead to rust and pollute the fluid
Solution Approach 1:
The spring is extracted from the fluid flow channel and relocated to the outer wall of the pressing head, completely separating it from contact with the fluid. This allows the spring to maintain its reset function while eliminating the harmful effect of fluid contamination and rust.
2Adaptability or versatility
If an air pump-type foam pump structure is used with high sealing requirements, then foam can be formed by blowing air into the bottle, but the structure is complex and the cost is too high
Solution Approach 1:
The air pump chamber and liquid pump chamber are merged into a single integrated chamber, with the piston serving both functions. The air inlet valve and liquid outlet valve are combined in one structure, eliminating the need for separate air pumping and liquid pumping mechanisms, thus simplifying the overall structure while maintaining foam formation capability.
3Adaptability or versatility
If an air pump-type foam pump is used, then foam can be generated at normal temperature, but it may have the risk of explosion in high temperature and open flame environment or in case of air leakage
Solution Approach 1:
The air pumping function is extracted from a separate air pump mechanism and integrated into the liquid pump chamber, eliminating the need for high-pressure air storage and separate air pumping components that could pose explosion risks. The system operates at lower pressures, improving safety in high-temperature and air-leakage conditions.
4Object-generated harmful factors
If the spring is sleeved outside the foam channel, then the spring does not pollute the fluid, but the structure becomes more complex
Solution Approach 1:
The pressing head outer wall serves multiple functions: it acts as the structural housing for the spring, provides the reset mechanism surface, and maintains the sealed chamber structure. This multi-functional design avoids adding extra components while achieving spring separation from fluid.
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 design prevents fluid contamination, ensures safety across various environments, reduces product complexity and cost, and enhances assembly efficiency by eliminating the need for complex linkage structures.
Implementation Method 1
a spring is sleeved outside the foam channel, one end of the spring abuts against the pressing head, and the other end thereof abuts against the shell
Implementation Method 2
the liquid pump chamber is provided with a liquid pump piston, the air pump chamber is provided with an air pump piston, the lower end of the pressing head is capable of pushing the upper end of the liquid pump piston
Implementation Method 3
a gas-liquid mixing chamber is provided inside the upper end of the shell, the gas-liquid mixing chamber is communicated with the foam channel
Data Source
AI summary
A spring foam pump and a packaging container including the same are provided. Under the push of the pressing head (2), the liquid pump piston (71) and the air pump piston (72) force the fluid and gas in the liquid pump chamber (5) and the air pump chamber (6) to enter the gas-liquid mixing chamber (4) to form foam, respectively. Under the action of pressure, the foam flows out after passing through the foam channel (21). The sealing requirement is not very high, and it can be used in various environments. The packaging container comprises a container capable of containing fluid and the spring foam pump.