Reciprocating Pump Coupler Assembly for Quick Paint Pump Removal
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Solution Overview
Problem
Many paint delivery systems experience significant wear and tear, making it difficult for users to easily remove the paint pump from its reciprocating drive for cleaning, maintenance, or replacing parts.
Innovation Solution
A liquid delivery system with a reciprocating drive coupled to a paint pump via a coupler that includes a collar assembly, an elastic member, and a sheath, allowing for easy removal of the paint pump by detaching the collar elements from the hydraulic and paint rods, using a beveled area to facilitate the release of the O-ring and supporting the sheath to prevent it from falling into the liquid source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the paint pump is permanently coupled to the reciprocating drive, then the system structure is simple and reliable, but the paint pump cannot be easily removed for cleaning, maintenance, or part replacement
Solution Approach 1:
The coupler assembly is divided into separate components: collar elements that can be independently attached and detached, an elastic member that provides retention force, and a sheath that protects the O-ring. This segmentation allows the paint pump to be easily separated from the reciprocating drive while maintaining a secure connection during operation.
Solution Approach 2:
The collar elements are designed to be removable from the hydraulic rod and paint rod interface. By extracting the retention mechanism (O-ring held by collar elements), the paint pump can be detached from the reciprocating drive, enabling easy removal for maintenance while keeping the overall system structure relatively simple.
2Ease of operation
If the O-ring is released without support, then the disassembly process is simple, but the sheath may fall into the liquid source causing contamination or loss
Solution Approach 1:
The collar elements serve as an intermediary structure that provides support during the disassembly process. When the O-ring is released from the collar elements, the sheath remains supported by the collar elements rather than falling freely into the liquid source, thus preventing contamination while maintaining simple disassembly procedures.
3Reliability
If the coupler uses a secure retention mechanism, then the paint pump connection is reliable, but the removal process becomes difficult and time-consuming
Solution Approach 1:
The coupler assembly uses an elastic member (O-ring) that provides dynamic retention force to secure the collar elements to the rods during operation. During removal, the same elastic properties allow the O-ring to be easily stretched and released from the collar elements, enabling quick detachment without compromising connection reliability during normal operation.
Solution Approach 2:
The retention mechanism relies on the elastic properties of the O-ring, which can change its physical state between a compressed state during operation (providing secure retention) and a stretched state during removal (allowing easy release). This parameter change enables the system to switch between reliable connection and easy removal states.
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
Enables efficient and safe removal of the paint pump from the reciprocating drive, reducing wear and tear and simplifying maintenance by providing a secure and supported mechanism for disassembly.
Implementation Method 1
The collar elements are held in place over the interface between the reciprocating paint pump and the hydraulic piston by an elastic device, such as an O-ring
Data Source
AI summary
A liquid delivery system includes a reciprocating drive and a liquid cylinder comprising a liquid piston, operably driven by the reciprocating drive, to pump a liquid along a flow path to a liquid applicator. The liquid delivery system includes a coupler configured to couple the liquid piston to the reciprocating drive. The coupler includes a plurality of collar elements and a biasing member configured to apply a biasing force on the plurality of collar elements to retain the collar elements in a position that forms a collar that couples the liquid piston to the reciprocating drive.