Viscous Substance Pump with Dual-Function Piston Valve
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Solution Overview
Problem
Existing devices for applying viscous substances, such as cosmetics or paints, have a high number of parts that are difficult to assemble and incorporate critical materials like steel, which can be problematic when used with cosmetic substances.
Innovation Solution
The device features a conveying system with a cylinder, piston, and pump plunger, where the piston has a dual function of opening and closing connection channels, reducing the number of components and avoiding critical materials. This configuration allows for automatic opening and closing of channels during pressure and suction strokes, facilitating the conveyance of the substance from the tank to the application apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional conveying device with multiple individual parts (including valves and valve bodies) is used, then the conveying function is achieved, but the assembly effort and expenditure are high
Solution Approach 1:
The patent merges multiple separate components (piston, valve body, valve elements, connection channels) into an integrated pump unit where the piston directly forms part of the valve mechanism. The piston itself acts as the valve body, and its position relative to the pump plunger automatically opens or closes connection channels, eliminating the need for separate valve components and reducing assembly complexity.
Solution Approach 2:
The piston serves multiple functions simultaneously: it acts as both a sealing element for fluid transfer and as a valve body that controls the opening and closing of connection channels. This multi-functionality reduces the overall number of components needed in the conveying device while maintaining the necessary conveying functionality.
2Reliability
If steel materials (such as resetting springs and valve bodies) are used in the conveying device, then the mechanical strength is sufficient, but the compatibility with cosmetic substances is problematic
Solution Approach 1:
The patent employs material homogeneity by using identical or compatible materials (such as plastic or elastomer) for all components that come into contact with the cosmetic substance, including the piston, pump plunger, and connection channels. This eliminates material incompatibility issues between different materials like steel and cosmetic substances, ensuring reliable and safe operation.
3Ease of operation
If additional valves and valve bodies are added to control connection channels, then the conveying control is improved, but the device complexity and assembly effort increase
Solution Approach 1:
The pump mechanism is designed to automatically control the opening and closing of connection channels through the relative movement between the piston and pump plunger during the pumping cycle. This self-regulating mechanism eliminates the need for additional externally controlled valves, maintaining precise conveying control while minimizing the number of components.
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
This design reduces the complexity and cost of assembly, eliminates the use of critical materials, and ensures efficient conveyance of viscous substances to the application apparatus, enhancing the overall performance and safety of the device.
Implementation Method 1
a pump plunger for the axial displacement of the piston
Implementation Method 2
the piston, in the pressure stroke in relation to the cylinder, to be in contact at a first stop of the pump piston, and, in the suction stroke in relation to the cylinder, to be in contact at a second stop of the pump piston
Data Source
AI summary
The invention relates to a device for applying a viscous substance, in particular for the purposes of cosmetics, writing, painting, drawing, and/or marking, with a tank (40) for storing a liquid substance, a pump cage (42) arranged within the tank (40), an application apparatus (2), and a conveying device (3), which is configured such as to convey the substance out of the tank (40) to the application device. According to the invention, provision is made for the conveying device (3) to comprise a cylinder (10), a piston (30) arranged such as to be axially displaceable in the cylinder, a pump plunger (20) for the axial displacement of the piston (30) and having a plunger hole (26), a first connection channel (41) between the cylinder (10) pump cage (42) and the tank (40), and a second connection channel (21) between the cylinder (10) pump cage (42) and the application apparatus (2), plunger hole (26) the piston (30) to be adjustable in relation to the pump plunger (20), for the piston (30) to open or close the first connection channel (41) depending on the setting in relation to the cylinder (10), and for the piston (30), depending on the position in relation to the pump plunger (20), to open or close the second connection channel (21).