Progressive Cavity Pump Modular Stator for Maintenance
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Solution Overview
Problem
Eccentric screw pumps used for dispensing viscous liquids are inconvenient to disassemble, clean, and maintain, especially when dealing with high-viscous liquids that harden quickly, as the existing structure makes it difficult to replace or repair main components like nozzles and rotors without fully disassembling the pump.
Innovation Solution
A progressive cavity pump design featuring a detachable stator body and rotor assembly, with a support housing that allows for easy attachment and detachment of components, enabling the pump to be disassembled for maintenance and reassembled without altering the motor and rotary shaft configuration, facilitating the replacement of the rotor and nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump uses a fixed integrated structure with motor and rotor connected, then the pump achieves stable operation and reliable performance, but the pump becomes difficult to disassemble for cleaning and maintenance
Solution Approach 1:
The pump is divided into separable modules: the stator body can be detached from the support housing, and the rotor can be removed from the stator. This segmentation allows easy disassembly for cleaning and maintenance while maintaining stable operation when assembled, directly resolving the contradiction between reliability and ease of repair.
2Stability of the object's composition
If the pump uses a fixed integrated structure, then the pump maintains consistent performance, but the pump requires full disassembly for component replacement increasing downtime
Solution Approach 1:
The modular design allows the stator body and rotor to be quickly removed and replaced without disassembling the entire pump. The stator body detaches from the support housing, and the rotor can be independently removed, significantly reducing maintenance downtime while maintaining consistent pump performance through proper reassembly.
Solution Approach 2:
The pump structure transitions from a static fixed design to a dynamic modular configuration that can be easily reconfigured for maintenance. The detachable stator body and removable rotor enable rapid component replacement, reducing downtime while the motor and rotary shaft remain in place for consistent operational performance.
3Reliability
If the pump uses a traditional connected structure, then the pump achieves reliable liquid dispensing, but the pump structure becomes complex and difficult to maintain
Solution Approach 1:
The pump structure is segmented into distinct modules: support housing, stator body, rotor, and nozzle. The stator body can be detached from the support housing, and the rotor can be independently removed. This segmentation simplifies the overall structure for maintenance purposes while maintaining reliable liquid dispensing when assembled, directly addressing the contradiction between reliability and device complexity.
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
This design allows for efficient cleaning and replacement of components, reducing downtime and maintenance costs, while maintaining consistent dispensing characteristics, and enabling precise application of viscous liquids without the need for frequent reassembly of the entire pump.
Implementation Method 1
a rotor (250) eccentrically connected to the rotary shaft (200) and rotated; a stator (530) including a rotor reception portion (533) that extends in up and down directions so that the rotor (250) is inserted therein, has a female screw recess (5331) formed in an inner wall surface, and stores a viscous liquid
Data Source
AI summary
Provided is a progressive cavity pump. The progressive cavity pump operates such that a viscous liquid is discharged by rotating an eccentric rotor with respect to a stator. The progressive cavity pump may be easily disassembled for repair and maintenance, and may be easily attached to an accurate position during re-assembly. Also, in the progressive cavity pump, main components such as a nozzle, a rotor, a stator, etc. may be easily replaced so as to easily adjust dispensing characteristic, while the driving units such as a motor and a rotary shaft are installed in a dispenser, and thus, an idle time of the dispenser may be reduced.