Adjustable Centrifugal Pump Strainer for Anti-Clog Flushing
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Solution Overview
Problem
Existing centrifugal pumps are not optimally adaptable to different operating situations, leading to inefficiencies and potential clogging due to solid particles settling within the pump, which affects hydraulic and mechanical efficiency.
Innovation Solution
A centrifugal pump design featuring a rotatable and axially displaceable centrifugal chamber and suction strainer, allowing for various operating modes, including normal operation, flat suction, and flushing functions, with adjustable suction openings and bypass lines for easy maintenance and debris removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the centrifugal pump uses a fixed suction strainer design, then the structure is simple, but the pump cannot adapt to different operating situations
Solution Approach 1:
The suction strainer is designed with rotatable and axially displaceable components that allow dynamic adjustment between different operating positions (normal operation, flat suction, flushing). The centrifugal chamber and suction strainer can rotate relative to each other and move axially to change the configuration of suction openings and bypass lines, enabling the pump to adapt to various operating conditions without requiring multiple separate devices
Solution Approach 2:
The suction strainer assembly serves multiple functions through its adjustable configuration: it acts as a standard suction device during normal operation, enables flat suction capability when rotated to specific positions, and provides flushing functionality when bypass lines are connected. This multi-functional design allows a single device to replace what would traditionally require multiple specialized components
2Reliability
If solid particles settle in the impeller area, then the pump structure remains simple, but hydraulic and mechanical efficiency deteriorates and clogging occurs
Solution Approach 1:
The bypass lines are pre-configured to connect to pressure outlets and lead to flushing openings in the suction strainer. This preliminary arrangement allows rapid initiation of flushing operations without requiring complex routing or additional valves, enabling quick response to prevent clogging while maintaining structural simplicity
Solution Approach 2:
The flushing system utilizes the pump's own pumped fluid to clean itself. High-pressure fluid from the pressure outlets flows through the bypass lines and exits through flushing openings in the suction strainer, automatically removing deposits without requiring external cleaning equipment or complex intervention systems
3Ease of operation
If the pump requires manual modifications for different operating modes, then the base structure is simple, but the ease of operation deteriorates
Solution Approach 1:
The rotatable and axially displaceable design allows operators to switch between different operating modes by simply rotating the suction strainer relative to the centrifugal chamber or moving it axially, eliminating the need for manual modifications. The dynamic adjustment mechanism provides quick transitions between normal operation, flat suction, and flushing modes without requiring tools or complex procedures
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
The design enables versatile operation modes for optimal performance and efficient flushing, reducing clogging and maintaining pump efficiency by allowing manual adjustment without tools, suitable for wastewater applications.
Implementation Method 1
the centrifugal chamber and the suction strainer are rotatable and/or axially displaceable relative to each other in at least one first, one second and one third position
Implementation Method 2
the centrifugal chamber and the suction strainer are rotatable and/or axially displaceable relative to each other
Implementation Method 3
a centrifugal pump with an impeller defining an axis for pumping a fluid... centrifugal chamber in which the impeller is axially inserted
Data Source
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AI summary
The invention relates to a centrifugal pump (1) with an impeller (2) defining an axis (5) for pumping a fluid, a centrifugal chamber (3) into which the impeller (2) is axially inserted, and a suction strainer (4) into which the centrifugal chamber (3) is axially inserted, wherein the centrifugal chamber (3) has at least one pressure outlet (12) leading from the impeller (2) to the suction strainer (4) for receiving a portion of the fluid pumped by the impeller (2), the suction strainer (4) has at least one bottom-side and at least one side-side suction opening (19, 21) for drawing in the fluid and at least one bypass line (23, 24) connectable to the at least one pressure outlet (12) for flushing the centrifugal pump (1) and/or the suction strainer (4), and the centrifugal chamber (3) and the suction strainer (4) are adjustable to at least one first, one second, and one third position (31, 32, 33) are rotatable and/or axially displaceable relative to each other,that at least in the first position (31) the at least one lateral intake opening (21) is open, in the second position (32) the at least one lateral intake opening (21) is deactivated, and in the third position (33) the at least one pressure outlet (12) is connected to the at least one bypass line (23, 24).