Rotary Shutter Mechanism for Fluid Dispenser Outlet Sealing
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Solution Overview
Problem
Existing fluid dispenser closing devices often cause contamination and drying of fluids due to exposure to air, leading to undesired mixing of colors in paint dosing applications, as they come into contact with other nozzles or fluids during closure, resulting in an uncontrolled environment for fluid exposure.
Innovation Solution
A device with a support structure, rotary portion, shutter portion, and actuating apparatus that rotates to close the outlet mouth of a fluid dispenser, using a pivoting shutter to prevent exposure to air while avoiding contact with other nozzles, and incorporating detecting means and a motor assembly for precise control, along with an adjustable system to ensure proper alignment and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closing device is used to prevent fluid exposure to air, then fluid deterioration is prevented, but the closing device may come into contact with hanging drops of fluid and cause contamination among fluids
Solution Approach 1:
The patent introduces an intermediary mechanism (the articulated arm with pivotable shutter) that mediates between the closing device and the nozzle. This intermediary allows the shutter to approach and close the outlet mouth without the closing device directly contacting the hanging drops of fluid, thus preventing contamination while still providing protection from air exposure
Solution Approach 2:
The patent employs dynamic movement patterns where the shutter pivots on an articulated arm to approach the nozzle outlet mouth. This dynamic approach allows precise control of the closing action, enabling the shutter to seal the outlet without contacting hanging drops, thereby resolving the contradiction between effective sealing and contamination prevention
2Adaptability or versatility
If modern paints with anti-pollution chemical compositions are used, then environmental regulations are met, but the paints dry immediately when exposed to air
Solution Approach 1:
The patent implements preliminary action by having the shutter close the nozzle outlet mouth immediately after dispensing operations end. This preliminary sealing action prevents air exposure before the modern anti-pollution paints can dry, allowing the system to accommodate these environmentally compliant materials without suffering from their rapid drying characteristic
Data Source
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AI summary
The device (10) comprises: a rotary portion (14), which is mounted so as to rotate on a support structure (12) around a rotation axis (X-X) between an angularly moved away condition and an angularly moved close condition relative to an outlet mouth (2); a shutter portion (16), which pivots relative to the rotary portion (14) around a pivoting axis (Y-Y) lying on a plane that is transverse relative to the rotation axis (X-X); and an actuating apparatus (18), for moving the rotary portion (14) between said moved away condition and said moved close condition. The shutter portion (16) is suited to pivot around the pivoting axis (Y-Y) from an opening position, in which the shutter portion (16) is spaced apart from the outlet mouth (2), to a closed position, in which the shutter portion (16) lies against said outlet mouth (2), when the rotary portion (14) shifts from the moved away condition to the moved close condition.