Spring Foam Pump Spring Extraction and Piston Merging
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Solution Overview
Problem
Existing foam pumps in the market face issues such as spring contamination of fluids due to direct contact, high sealing requirements, potential explosion risks, and complex structures, making them unsuitable for industries with stringent conditions.
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, and a gas-liquid mixing chamber, allowing for safe operation without direct fluid contact and eliminating the need for high-pressure sealing, thus preventing contamination and explosion risks while simplifying the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the spring is placed in the fluid flow channel, then the structure is simple and commonly used, but the spring contacts 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 placed in a separate spring cavity. The spring cavity is isolated from the fluid passage by a sealing structure, so the spring does not contact the fluid during operation. This resolves the contradiction by maintaining structural simplicity while preventing fluid contamination and spring rust.
2Reliability
If an air pump-type foam pump is used, then sealing performance is high, but the structure is complex and the cost is too high
Solution Approach 1:
The air pump piston and liquid pump piston are merged into a single integrated piston structure. The air pump piston is integrally provided on the liquid pump piston, forming a unified component that performs both air pumping and liquid pumping functions. This merging reduces the number of parts and simplifies the overall structure while maintaining effective sealing performance.
3Productivity
If an air pump-type foam pump is used, then foam generation is effective, but it requires high temperature safety measures due to explosion risks
Solution Approach 1:
The spring is extracted from the high-pressure air system and placed in a separate spring cavity isolated from the air pump chamber. This separation eliminates the explosion risk associated with springs in high-pressure air environments while maintaining foam generation efficiency. The spring operates in a safe, low-pressure zone independent of the air pumping system.
4Device complexity
If a traditional spring structure is used in the foam pump, then the structure is simple, but it requires high sealing requirements to prevent leakage
Solution Approach 1:
The pump system is segmented into distinct functional zones: the spring cavity is separated from the air pump chamber and liquid pump chamber. Each zone has its own sealing requirements optimized for its specific function. The spring cavity uses simple sealing suitable for low-pressure spring operation, while the pump chambers use appropriate sealing for fluid handling, reducing overall sealing complexity.
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 solution provides a safe, cost-effective, and reliable foam dispensing system that prevents spring contamination, reduces the risk of explosion, and simplifies the structure by eliminating complex linkages, making it suitable for various environments and reducing manufacturing costs.
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
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.