Pneumatic Self-Priming Device for Centrifugal Pumps
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Solution Overview
Problem
Centrifugal pumps require complex and time-consuming water feeding processes before starting, often involving vacuum pumps that cause noise and high energy consumption.
Innovation Solution
A pneumatic type water-free starting self-priming device with a symmetrical cylinder structure, using gas-liquid separation chambers and high-speed gas to rapidly suction, exhaust air, and fill the chamber with water, ensuring efficient operation and reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vacuum pump is connected to the centrifugal pump for vacuuming, then the water feeding process can be completed, but large noise and high energy consumption are caused
Solution Approach 1:
The patent uses pneumatic pressure differential mechanisms instead of vacuum pumps. Gas-liquid separation chambers utilize pressure differences created by gas flow to automatically draw water into the pump chamber, eliminating the need for energy-consuming vacuum equipment while achieving the same water feeding function.
Solution Approach 2:
The device enables self-priming functionality where the pump system automatically feeds water without external assistance. The gas-liquid separation chambers and pressure differential mechanisms work autonomously to complete the water feeding process, making the system self-sufficient and eliminating dependency on vacuum pumps.
2Reliability
If a vacuum pump is connected to the centrifugal pump for vacuuming, then the water feeding process can be completed, but the operation becomes complex and time-consuming
Solution Approach 1:
The patent integrates the water feeding function directly into the pump structure through gas-liquid separation chambers. This merging of functions eliminates the need for separate vacuum pump equipment and complex operational procedures, simplifying both the device structure and the operating process while maintaining reliable water feeding capability.
3Productivity
If the chamber is full of air before starting, then the centrifugal force generated is insufficient for water delivery, but adding complex priming systems increases device complexity
Solution Approach 1:
The patent employs pneumatic pressure differential principles through gas-liquid separation chambers to automatically remove air and introduce water into the pump chamber before startup. This pneumatic approach efficiently prepares the chamber for water delivery without requiring complex mechanical priming systems, thus improving productivity while keeping the device simple.
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 simplifies the water feeding process, reduces energy consumption, and ensures the centrifugal pump can enter a normal operating state quickly, improving operational efficiency and ease of operation.
Implementation Method 1
The driving device uses high-speed gas to drive a drive disk to rotate, to drive the drive shafts to rotate
Implementation Method 2
a telescopic piston shaft rod in the gas-liquid separation chamber is used to generate a pressure difference between the chamber and outside to suck in water
Implementation Method 3
to suck in water, so as to realize water suction, gas-liquid separation and water drainage
Implementation Method 4
the expandable gas-liquid separation chamber uses shrinkage or expansion of volumes of inner and outer chambers thereof to generate a pressure difference to suck in water
Implementation Method 5
shrinkage or expansion of volumes of inner and outer chambers
Implementation Method 6
gas acceleration channels are symmetrically arranged on the two sides of the driving device
Data Source
AI summary
Clean version of the Abstract A pneumatic type water-free starting self-priming device includes a driving device, and a gas-liquid separation chamber and an expandable gas-liquid separation chamber respectively arranged on two sides of the driving device. The driving device uses high-speed gas to drive a drive disk to rotate and drive a drive shaft to rotate. The gas-liquid separation chamber uses a telescopic piston shaft rod to generate a pressure difference between the gas-liquid separation chamber and outside to suck in water, so as to realize water suction, gas-liquid separation and water drainage. The expandable gas-liquid separation chamber uses shrinkage or expansion of volumes of inner and outer chambers to generate a pressure difference to suck in water, so as to realize water suction, gas-liquid separation and water drainage. Also, the high-speed gas from the driving device flows through the two chambers, so that air can be discharged quickly.