Piston Pump Stroke Stop Mechanism for Simpler Adjustment Assembly
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Solution Overview
Problem
Existing stroke adjustment mechanisms for piston pumps require separately manufactured elements for mounting, leading to difficulties in assembly and increased expenses.
Innovation Solution
A piston pump design featuring a stroke stop member rotatably mounted on the discharge tube, allowing for pivoting between different positions to limit piston sliding and adjust stroke length, eliminating the need for separate mounting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separately manufactured element is used for mounting on the piston chamber to adjust stroke, then the stroke adjustment function is achieved, but the assembly difficulty increases and manufacturing cost increases
Solution Approach 1:
The stroke stop member is integrated directly onto the discharge tube, combining the stroke limitation function with the existing discharge tube structure. This eliminates the need for separate mounting elements on the piston chamber, thereby simplifying assembly while maintaining stroke adjustment capability.
Solution Approach 2:
The discharge tube is given multiple functions: it serves both as the fluid discharge pathway and as the mounting structure for the stroke stop member. This multi-functionality reduces the total number of components needed and simplifies the overall device structure.
2Adaptability or versatility
If a separately manufactured element is used for mounting on the piston chamber to adjust stroke, then the stroke adjustment function is achieved, but the manufacturing cost increases
Solution Approach 1:
The stroke stop member is integrated directly onto the discharge tube, combining the stroke limitation function with the existing discharge tube structure. This eliminates the need for separate mounting elements on the piston chamber, thereby simplifying assembly while maintaining stroke adjustment capability.
Solution Approach 2:
The discharge tube is given multiple functions: it serves both as the fluid discharge pathway and as the mounting structure for the stroke stop member. This multi-functionality reduces the total number of components needed and simplifies the overall device structure.
3Adaptability or versatility
If the stroke stop member is rotatably mounted on the discharge tube, then the stroke can be adjusted to different positions, but the device complexity increases
Solution Approach 1:
The stroke stop member is designed to be rotatable on the discharge tube, allowing dynamic adjustment of the stroke position. This rotational capability enables the stroke stop surface to be positioned at different locations along the discharge tube, providing adjustable stroke lengths while using a simple rotational mechanism rather than complex positioning systems.
Data Source
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AI summary
A piston pump with a piston coaxially slidable in a chamber for dispensing fluid out of a discharge tube (27) which extends normal to the axis about which the piston is slidable in the chamber with a stroke stop member (38) rotatably journalled on the discharge tube (27) for pivoting between different positions in which the stroke stop member (38) limits inward sliding of the piston into the chamber to different extents.