Displacement Pump Mounting Ring for Fast Alignment and Low Wear
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Axial displacement pumps in fluid dispensing systems face challenges with time-intensive mounting and detaching processes, and experience wear due to misaligned driving forces, which affect the pump rod and surrounding components.
Innovation Solution
The design incorporates a pump rod with a load concentrating feature and a driving link system that includes a U-shaped flange and cavity configuration to secure the pump rod, reducing misalignment and side loading, and a clamping mechanism with an axial ring and tightening ring for secure mounting and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump rod is attached to the reciprocating drive by a pin passing through the pump rod, then the pump rod can be secured to the reciprocating drive, but the mounting and detaching process becomes time-intensive and requires loose parts and several tools
Solution Approach 1:
The pump rod head is merged with the shaft to form an integral structure, eliminating the need for separate attachment components like pins. The drive link cavity directly receives and secures the integrated head, creating a unified assembly that reduces both part count and assembly complexity while maintaining secure attachment.
Solution Approach 2:
The drive link cavity serves multiple functions: it receives the pump rod head, provides alignment through its geometry, and secures the assembly through the U-shaped flange mechanism. This multi-functional design eliminates the need for separate mounting components and simplifies the overall attachment process.
2Ease of operation
If the pump rod is pinned to the reciprocating drive, then the pump rod can be detached for maintenance, but the process requires loose parts and several tools making it complex
Solution Approach 1:
By integrating the head with the shaft, the invention eliminates multiple loose parts (pins, washers, nuts) that were previously required for attachment. The U-shaped flange on the drive link provides a built-in retention mechanism that requires no additional components, significantly reducing device complexity while maintaining ease of operation.
Solution Approach 2:
The invention extracts the attachment function from separate components and integrates it directly into the drive link structure through the U-shaped flange and cavity design. This allows the pump rod to be secured and detached using the drive link's own structural features without requiring external tools or loose parts.
3Force
If the pump rod experiences driving forces not coincident with the centerline, then the pump rod can be driven by the reciprocating drive, but the pump rod experiences wear on various components
Solution Approach 1:
The load concentrating feature is positioned asymmetrically on the pump rod head to precisely align with the drive link's force application point. This asymmetric positioning ensures that driving forces are transmitted coincident with the pump rod centerline, preventing side loads and reducing wear on components while maintaining effective force transmission.
Solution Approach 2:
The load concentrating feature creates a localized area on the pump rod head where forces are concentrated and properly directed. This local modification ensures that the driving force is applied at the correct location and orientation, preventing misalignment and reducing wear on the pump rod and surrounding components.
Data Source
AI summary
A fluid spraying system includes a displacement pump configured to mount to a drive housing. A reciprocating drive is connectable to a pump rod of the displacement pump and includes a connecting rod and a drive link that receives a head of the pump rod. A tightening ring that includes threading is configured to rotate about a cylinder of the pump and shift axially along the cylinder and engage with a bottom side of the drive housing to secure the displacement pump to the drive housing.