Handheld Sanitary Fluid Sprayer Polymer Pump Cylinder
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Solution Overview
Problem
Sanitary fluid sprayers face corrosion issues due to the use of corrosive low-viscosity fluids, which can degrade metal components, and existing technologies struggle to maintain efficient spraying without requiring frequent recharging.
Innovation Solution
A handheld sanitary fluid sprayer featuring a polymer pump body and a metallic piston with a tapered interface, where the piston reciprocates within the polymer pump body to generate spray pressure, forming a dynamic metal-to-polymer seal and eliminating the need for air pressure, thus preventing corrosion and reducing component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal components are used in the sprayer, then structural strength and durability are improved, but corrosion resistance deteriorates due to exposure to corrosive sanitary fluids
Solution Approach 1:
The sprayer is divided into components made of different materials: the pump body and fluid-contact parts are made of corrosion-resistant polymer, while the piston and drive mechanism use metal for strength. This segmentation allows each component to be optimized for its specific functional requirements without compromising overall system performance.
Solution Approach 2:
The invention employs composite construction by combining polymer and metal materials in a single system. The polymer pump body provides corrosion resistance, while metal pistons and drive components provide structural strength. This composite approach resolves the contradiction between needing metal for strength and avoiding it for corrosion resistance.
2Power
If pneumatic pressurization is used to drive the spray, then spraying power is improved, but device complexity increases due to additional air pressure components
Solution Approach 1:
The invention extracts and eliminates the pneumatic pressurization system from the sprayer design. Instead of using external air pressure to drive the spray, the system uses a direct mechanical pump driven by an electric motor or manual operation. This removal of the pneumatic subsystem reduces device complexity while maintaining adequate spraying power for sanitary fluid application.
Solution Approach 2:
The pneumatic system is replaced with a direct mechanical pumping system. The pump uses a piston driven by mechanical means (electric motor or manual trigger) to directly pressurize and discharge the sanitary fluid through the nozzle, eliminating the need for air pressure intermediaries and reducing overall system complexity.
3Duration of action of moving object
If frequent recharging is required to maintain spraying operation, then continuous operation capability is improved, but productivity deteriorates due to operational interruptions
Solution Approach 1:
The invention designs the pump and reservoir system to enable continuous operation until the fluid reservoir is depleted. The pump maintains consistent pressure and flow throughout the fluid supply period, and the system can be quickly refilled without requiring recharging or complex maintenance interventions, thereby maintaining productivity during extended operation periods.
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 efficient and cost-effective sanitary fluid spraying by eliminating corrosion-prone components, allowing continuous operation until the fluid reservoir is depleted, and simplifying the manufacturing and operation of the sprayer.
Implementation Method 1
The first metallic piston is configured to reciprocate within the pumping chamber such that the outer surface of the piston comes into and out of contact with the inner surface of the inner cylinder to pump spray fluid
Implementation Method 2
An interference fit is formed between the first metallic piston and the first inner cylinder during reciprocation of the first metallic piston within the first inner cylinder
Data Source
AI summary
A pump draws fluid from a reservoir and drives the fluid downstream to a spray tip where the fluid is applied to a surface. The pump includes a polymer pump body and a metallic piston configured to reciprocate relative to and within the polymer pump body. The metallic piston interfaces with an inner cylinder formed within the polymer pump body and pumps fluid through the polymer pump body to a spray nozzle downstream of the inner cylinder.