Dry Powder Spray Bottle with Airbag and Piston
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Solution Overview
Problem
Existing dry powder spray bottles face issues with uncontrollable powder output and ease of blockage, as well as moisture absorption leading to reduced spraying effectiveness.
Innovation Solution
A dry powder spray bottle design featuring a bottle body with an inner and outer container, a piston, one-way air inlet valve, airbag structure, rotating powder stirring mechanism, and a rotary sealing mechanism to ensure stable and controlled powder output, preventing moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spray bottle with a pump body and conveying pipe is used to spray dry powders, then the spraying operation becomes easier and faster, but the dry powders are easy to get damp and holes appear after each spraying which affects spraying effect
Solution Approach 1:
The bottle body is divided into an inner bottle and an outer bottle, with the inner bottle containing the dry powders and the outer bottle providing structural support. This segmentation allows the inner bottle to be sealed separately, preventing moisture ingress while maintaining spraying functionality.
Solution Approach 2:
A piston is introduced as an intermediary component between the pump body and the inner bottle. The piston moves within the inner bottle to push powders toward the spray hole without direct contact between the pump body and powders, reducing moisture exposure and preventing hole blockage.
2Ease of operation
If many small holes are defined in a bottle cap for powder dumping, then convenience of use is improved, but holes are easily blocked
Solution Approach 1:
Instead of fixed holes in the bottle cap, the invention uses a movable piston that dynamically controls powder flow. The piston can be pushed to move powders toward the spray hole or retracted to allow air intake, providing dynamic control that prevents hole blockage while maintaining convenience.
3Ease of operation
If extrusion method is used for powder application, then ease of use is improved, but amount of powders is not easy to be controlled
Solution Approach 1:
The pump body acts as a feedback mechanism that controls the movement of the piston. Each pump operation provides controlled pressure to move a specific amount of powder through the spray hole, enabling precise control of powder quantity while maintaining ease of use through simple pumping action.
Data Source
AI summary
A dry powder spray bottle includes a bottle body. The bottle body includes an outer bottle and an inner bottle, a piston and a one-way air inlet valve are sequentially arranged between the inner bottle and the outer bottle, a powder storage cavity is formed above the piston, and an airbag structure is formed between the one-way air inlet valve and the outer bottle. A rotating powder stirring mechanism is provided between the inner bottle and the outer bottle. A one-way valve is provided in the powder stirring mechanism, and when the head cap is pressed, the one-way valve opens, and gas in the airbag structure is delivered to the inner bottle through the one-way valve and sprayed out from the head cap together with dry powders, and a sealing mechanism which can close a powder outlet passage is provided between the head cap and the inner bottle.