Dosage Pump Single Body Integration for Assembly
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Solution Overview
Problem
Existing dosage pumps are structurally complex, leading to increased assembly time and costs due to numerous components, which complicates the manufacturing process and makes them more expensive to produce and assemble.
Innovation Solution
A simplified dosage pump design where most components are molded from plastic material, featuring a single body for the dosage chamber and connecting channel, reducing the number of parts and utilizing snap-acting quick-coupling mechanisms for faster assembly, and a cam mechanism for motion conversion, allowing for cheaper production and quicker assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional dosage pump design with multiple components (cup-shaped body, block, cover, gaskets) is used, then the pump can achieve reliable sealing and dosing function, but the structural complexity increases and assembly time and costs increase
Solution Approach 1:
The patent combines the cup-shaped body, block, and cover into a single integrated body formed by injection molding. The dosage chamber is created by forming a cavity within this single body, eliminating the need for multiple separate components and gaskets while maintaining the sealing function. This merging of components directly reduces structural complexity while preserving the dosing reliability.
Solution Approach 2:
The single integrated body performs multiple functions simultaneously: it serves as the container for the liquid to be dosed, forms the dosage chamber, provides the channel for liquid rise, and creates the sealing surfaces. This multi-functionality eliminates the need for separate sealing gaskets and multiple structural components, resolving the contradiction between reliability and complexity.
2Reliability
If traditional dosage pump design with numerous components is used, then the pump can achieve proper sealing through gaskets, but the manufacturing cost and assembly time increase
Solution Approach 1:
The sealing surfaces are integrated directly into the single molded body through precision molding techniques. The cavity formation process creates built-in sealing surfaces that eliminate the need for separate gasket components, reducing both part count and assembly operations while maintaining sealing reliability.
Solution Approach 2:
The patent replaces the mechanical gasket-based sealing system with a molded-in sealing surface system. The injection molding process creates precise sealing geometries directly in the plastic body, substituting mechanical assembly of multiple sealing components with a single molded feature, thereby reducing manufacturing cost and assembly time.
3Reliability
If traditional dosage pump design with multiple separate components is used, then the pump can achieve proper assembly, but the assembly time and assembly costs increase
Solution Approach 1:
By consolidating the cup-shaped body, block, and cover into a single integrated component, the patent eliminates multiple assembly steps involving gasket installation and component alignment. The single molded body is installed as one piece, dramatically reducing assembly time while maintaining the structural integrity and sealing reliability of the dosage chamber.
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 simplified design results in a dosage pump that is easier and faster to assemble, with reduced assembly costs and production complexity, while maintaining functionality, by integrating multiple functions into fewer components and using cost-effective plastic materials.
Implementation Method 1
a rotary element 12 provided with vanes, which rotates as a consequence of the flowing fluid and is associated with means 13 for transmission and mechanical reduction of the rotary motion and with means 14 for converting the rotary motion into a reciprocating rectilinear motion
Implementation Method 2
a cam mechanism for motion conversion
Implementation Method 3
a flow control element 20, which is pushed closed by elastic means 21
Data Source
Figure 1
Figure 2~4
Figure 5~8
AI summary
A dosage pump, of the type comprising a hollow body (11) which is adapted to be interposed between pipe portions of a hydraulic circuit and is provided internally with a rotating element (12) provided with vanes, which rotates as a consequence of the flowing fluid and is associated with means (13) for transmission and speed reduction and with means (14) for converting the rotary motion into reciprocating rectilinear motion, which in turn are connected to means (15) for drawing and pumping the liquid to be dosed, the latter means being provided, inside a container (16) for the liquid which is fixed to the hollow body (11), by an injection stem (17) which is moved by the motion conversion means (14) so as to enter and exit with its end (18) from a dosage chamber (19), which on the opposite side with respect to the entry side for the injection stem (17) is closed by a flow control element (20), which is pushed closed by elastic means (21); the chamber (19) is connected to the inside of the container (16) on the side of the stem (17) and to a channel (22) for connection to a tube (23) for the rise of the dosed liquid on the side of the flow control element (20) toward the hollow body (11). The chamber (19) and the connection channel (22) are formed in a single body (24), inside which the flow control element (20) with its elastic closure means (21) is also fitted.