Self-priming centrifugal pump device with segmented chambers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Centrifugal pumps require complex and labor-intensive irrigation for startup, leading to turbulent energy loss, gas-liquid mixing, and difficult maintenance, with inefficient self-priming due to incomplete gas-liquid separation.
Innovation Solution
A self-priming starting device with a specific configuration including an outer and inner housing, drum, spacers, a three-blade support, and a gas-liquid cutter, which effectively discharges air and separates gas-liquid mixtures by using a reciprocating motion and multiple chambers to enhance self-priming efficiency and ease maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-priming centrifugal pump is used, then self-priming capability is improved, but gas-liquid mixing and separation cause turbulent energy loss and damage to hydraulic components
Solution Approach 1:
The pump cavity is divided into multiple independent chambers (suction chamber, pressure chamber, separation chamber) using spacers and partitions. This segmentation allows different zones to perform specific functions (suction, compression, separation) separately, reducing turbulent mixing between gas and liquid while maintaining self-priming capability.
Solution Approach 2:
A gas-liquid separation device is introduced as an intermediary component between the pump chambers. This device facilitates controlled gas-liquid separation through defined flow paths, reducing uncontrolled turbulent mixing and energy loss while enabling effective self-priming operation.
2Ease of operation
If self-priming process is used, then irrigation requirement is reduced, but incomplete gas-liquid separation reduces self-priming efficiency
Solution Approach 1:
The pump cavity is segmented into distinct functional chambers (suction, pressure, separation) that work in sequence. This allows complete gas-liquid separation to occur in dedicated zones, improving self-priming efficiency while maintaining ease of operation with minimal irrigation requirements.
Solution Approach 2:
Gas-liquid separation is performed preliminarily in the separation chamber before fluid enters the main pump chambers. This preliminary separation action ensures that subsequent pumping operations start with properly separated phases, maximizing self-priming efficiency without requiring extensive irrigation.
3Productivity
If complex self-priming structure is used, then self-priming capability is improved, but maintenance and replacement become difficult
Solution Approach 1:
The pump is divided into modular chambers and components that can be independently accessed and maintained. The spacers and partitions create natural separation zones that allow technicians to service specific components without disassembling the entire pump, easing maintenance despite the complex self-priming structure.
4Ease of operation
If traditional irrigation startup is used, then operation is simple, but workload is large and start-up cycle is long
Solution Approach 1:
The pump performs self-priming automatically through its segmented chamber structure and integrated separation device, eliminating the need for manual irrigation operations. This self-service capability maintains operational simplicity while dramatically reducing the start-up cycle time by automating the priming process.
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 device achieves high self-absorption efficiency, reduces vibration and noise, facilitates easy maintenance, and ensures thorough gas-liquid separation, improving the overall self-priming process and reducing damage to the pump.
Implementation Method 1
the three-blade support has a rotating body and three support rods evenly distributed on the rotating body in a circumferential direction, the three-blade support is rotatably arranged within the inner self-priming chamber
Implementation Method 2
each of the drum chambers is provided with a piston, and the piston is connected to the rotating body via a connecting rod
Implementation Method 3
a gas-liquid cutter is provided in the gas-liquid separation chamber. The gas-liquid cutter has spiral blades attached to a surface of the gas-liquid cutter
Implementation Method 4
The drum forms an inner self-priming chamber inside. The three-blade support has a rotating body and three support rods evenly distributed around the circumference of the rotating body
Implementation Method 5
each of the drum chambers is provided with a piston, and the piston is connected to the rotating body via a connecting rod
Implementation Method 6
the opening and closing disc is installed in the gas-liquid chamber and is configured to slide up and down along a wall surface of the outer housing and divide the gas-liquid chamber into an upper gas-liquid chamber and a lower gas-liquid chamber
Implementation Method 7
centrifugal pumps are widely used in various conveying systems
Data Source
AI summary
A self-priming starting device for a centrifugal pump is mounted on a water inlet pipe of the centrifugal pump and includes an outer housing, an inner housing, a primary spacer, a secondary spacer, an opening and closing disc and a tertiary spacer which are sequentially provided in the outer housing from top to bottom, and an elastic steel plate provided in the water inlet pipe. A drum is provided in the inner housing, and air inlet pipes and air discharging pipes are provided on the inner housing. The drum is provided with drum chambers and a three-blade support is provided in the drum. The opening and closing disc is provided with a vertical rod. A gas-liquid cutter is provided between the primary spacer and the secondary spacer. The primary spacer, the secondary spacer, the opening and closing disc and the tertiary spacer are provided with through-holes.