Centrifugal Pump Cooling Jacket Segmentation for Solid Blockage
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Solution Overview
Problem
Centrifugal pumps used in dirty water and wastewater applications face operational safety issues due to sedimentation and blockage in the cooling jacket space, particularly when solids enter the cooling medium, leading to reduced efficiency and reliability.
Innovation Solution
The design features a cooling jacket system where the fluid, after cooling the drive motor, is directed to flow out of the pump room through a dedicated outlet, preventing solids from entering the pump chamber and ensuring a continuous fluid supply, thus minimizing the risk of air intrusion and maintaining operational reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling jacket inlet opens into the pump chamber allowing fluid to flow through the cooling jacket, then the drive motor is cooled effectively, but solids can enter the cooling jacket space causing sedimentation and blockage
Solution Approach 1:
The pump housing is divided into separate functional spaces: the pump chamber for fluid processing and the cooling jacket chamber for motor cooling. The cooling jacket inlet opens into the pump chamber, but the cooling jacket outlet opens into the pump housing outside the pump chamber, creating distinct flow paths that prevent solids from entering the cooling jacket space while maintaining effective motor cooling
2Device complexity
If the cooling jacket outlet opens into the pump chamber, then the cooling system is simple, but solids can block the impeller and reduce productivity
Solution Approach 1:
The outlet opening is positioned in the pump housing but outside the pump chamber, creating a separate discharge path for the cooling fluid. This segmentation ensures that the cooling system remains relatively simple while preventing solids from the pump chamber from entering the cooling jacket and causing blockages that would reduce productivity
3Temperature
If solids are conveyed through the cooling jacket space, then cooling is effective, but sedimentation occurs in the cooling jacket space over time
Solution Approach 1:
The harmful solids are extracted from the cooling fluid stream by directing the cooling jacket outlet into the pump housing outside the pump chamber. This allows the cooling function to remain effective while removing the solids before they can settle in the cooling jacket space, thereby extending the service life of the cooling system
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 configuration significantly enhances operational safety by preventing solids from entering the impeller area, reducing sedimentation, and ensuring consistent fluid flow, thereby increasing the reliability and longevity of the centrifugal pump.
Implementation Method 1
a drive motor arranged in the motor housing and a pump housing arranged on the motor housing forming a pump chamber with an impeller arranged in the pump chamber and drivable by the drive motor
Implementation Method 2
an impeller arranged in the pump chamber and drivable by the drive motor for conveying a fluid
Implementation Method 3
a cooling jacket forming a cooling jacket chamber, which cooling jacket chamber has a cooling jacket inlet opening from the pump chamber into the cooling jacket chamber
Implementation Method 4
through which fluid conveyed by the impeller can flow into the cooling jacket chamber
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a centrifugal pump with a motor housing (1) with a drive motor (3) arranged in the motor housing (1) and a pump housing (2) arranged on the motor housing (1) forming a pump chamber (4) with an impeller (5) arranged in the pump chamber (4) and driven by the drive motor (3) for pumping a fluid, wherein the motor housing (1) is coaxially surrounded externally by a cooling jacket (7) forming a cooling jacket chamber (6), which cooling jacket chamber (6) has a cooling jacket inlet (8) opening from the pump chamber (4) into the cooling jacket chamber (6), through which fluid pumped by the impeller (5) can flow into the cooling jacket chamber (6), and the cooling jacket chamber (6) has a cooling jacket outlet (10) opening inside the pump housing (2) and outside the pump chamber (4), through which the fluid can flow out of the cooling jacket chamber (6).