Reusable Spray Dispenser Vacuum Relief for Leak-Free Liquid Draw
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Solution Overview
Problem
Existing liquid dispensing systems for pest control compositions, such as insecticides and herbicides, face challenges in efficient dispensing and user safety, including accidental activation and leakage, as well as inefficiencies in vacuum relief systems, which affect the ability to draw liquid from the bottle.
Innovation Solution
A liquid dispensing system featuring a reusable dispensing fixture and spray dispenser with a vacuum relief system, including a check valve and flexible sealing gaskets, that allows ambient air to enter the bottle, preventing vacuum buildup and ensuring secure, leak-free operation, along with a design that prevents accidental activation and minimizes user contact with the liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a vacuum relief system is added to the dispensing system, then the ability to draw liquid from the bottle is improved, but the device complexity increases
Solution Approach 1:
The vacuum relief system is segmented into separate functional components: a check valve assembly integrated into the pump mechanism and a separate air inlet passage system. This segmentation allows the vacuum relief function to be added without completely redesigning the entire dispensing system, thereby improving productivity while limiting the increase in overall complexity.
Solution Approach 2:
An intermediary air inlet passage is introduced as a mediator between the external environment and the bottle interior. This passage works in conjunction with the check valve to provide vacuum relief by allowing ambient air to enter the bottle when vacuum pressure exceeds a certain threshold, enabling liquid drawing without requiring complex active vacuum control systems.
2Reliability
If a check valve system is integrated into the pump, then liquid leakage is prevented, but the manufacturing complexity increases
Solution Approach 1:
The check valve function is merged with the existing pump mechanism by integrating the check valve assembly into the pump housing. This integration allows the pump to perform both its primary liquid pumping function and the secondary function of preventing liquid backflow and leakage through the check valve, thereby improving reliability without requiring completely separate manufacturing processes for each function.
Solution Approach 2:
The pump assembly is designed with multi-functionality, serving both as a liquid pumping mechanism and as a vacuum relief system with integrated check valve. This universal design allows a single component assembly to perform multiple functions (pumping liquid, preventing leakage, and providing vacuum relief), reducing the need for additional separate components and simplifying manufacturing compared to having dedicated components for each function.
3Object-affected harmful factors
If the spray dispenser is designed to prevent accidental activation, then user safety is improved, but the ease of operation decreases
Solution Approach 1:
The spray dispenser incorporates a preliminary anti-action mechanism in the form of a safety lock or trigger guard that must be deliberately disengaged before the spray function can be activated. This preliminary action prevents accidental activation by requiring a specific deliberate movement, thereby improving user safety. The design ensures that normal handling or dropping of the device cannot inadvertently trigger the spray mechanism.
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 system enables efficient and safe dispensing of liquid compositions by preventing vacuum-induced pump failure and ensuring secure, leak-free operation, while minimizing user contact with the liquid, thus enhancing user safety and operational efficiency.
Implementation Method 1
a vacuum relief system, including a check valve and flexible sealing gaskets, that allows ambient air to enter the bottle
Implementation Method 2
a vacuum relief system, including a check valve and flexible sealing gaskets
Data Source
AI summary
The present disclosure relates generally to liquid dispensing systems and more specifically to liquid dispensing systems having a reusable dispensing fixture and a reusable spray dispenser.