Rotating Frame Double Disc Pump for Serviceability
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Solution Overview
Problem
Induced flow reciprocating double disc pumps face challenges in serviceability due to clearance issues, corrosion-related seizures, and wear from pumping abrasive fluids, leading to performance reduction and costly replacements.
Innovation Solution
The design incorporates a rotatably connected stationary and rotating frame element that simplifies assembly and disassembly, improves safety, and reduces corrosion, along with a replaceable sealing system and guide rods for easier maintenance, eliminating the need for hazardous underside access and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pump uses a fixed frame structure, then manufacturing is simpler, but serviceability and maintenance access are problematic
Solution Approach 1:
The frame structure is designed to be rotatable between a first position for operation and a second position for maintenance, allowing the same structure to serve both manufacturing simplicity and serviceability requirements through dynamic repositioning
Solution Approach 2:
The frame is divided into stationary and rotating portions, enabling independent movement and positioning of the rotating frame element to access different components for maintenance while maintaining structural integrity during operation
2Productivity
If the pump operates continuously, then productivity is maintained, but corrosion-related seizures and wear occur
Solution Approach 1:
The pump incorporates self-priming capability and automatic positioning mechanisms that allow it to maintain operation without external intervention, reducing downtime while the rotatable frame enables periodic maintenance to prevent corrosion-related failures
3Adaptability or versatility
If the pump handles abrasive fluids, then processing capability is maintained, but valve components and casting surfaces wear quickly
Solution Approach 1:
The frame rotation mechanism changes the operational parameters by allowing repositioning of the pump to access and replace worn valve components and casting surfaces, extending service life while maintaining the ability to handle abrasive fluids
Solution Approach 2:
The rotatable frame allows maintenance personnel to access and replace worn components before they fail completely, preventing corrosion-related seizures and extending the operational life of the pump when handling abrasive fluids
4Ease of repair
If the pump requires underside access for maintenance, then component access is achieved, but safety is compromised
Solution Approach 1:
The rotatable frame element dynamically changes the access point from underneath the pump to the top side, eliminating safety hazards associated with working underneath the pump while maintaining ease of repair through simple rotation and locking mechanism
Data Source
AI summary
An induced flow reciprocating double disc pump assembly includes a rotating frame supporting a double disc pump, the rotating frame has a plurality of supports and a shaft defining a horizontal axis of rotation. A stationary frame supports the rotating frame and includes a plurality of bars and uprights and a flange bearing assembly engaged each of the shafts permitting rotation between the rotating frame and the stationary frame. A locking pin positions the rotating frame and the stationary frame at a plurality of positions relative to each other. A rotation crank is engaged to the shaft. The rotating frame has a first position relative to the stationary frame supporting the double disc pump in a vertical direction and a second position where the double disc pump is in a horizontal direction.