Gear Pump Damping Layer for Noise and Wear Reduction
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Solution Overview
Problem
Gear pumps experience noise and wear due to collisions between gears and the pump cylinder, which existing designs fail to adequately address.
Innovation Solution
A gear pump design featuring a pump body, pump cylinder, driving gear, and driven gear with wear-resistant washers and bearings to prevent direct contact between the gears and the pump components, along with a motor-driven shaft system that includes a rotor and stator for reduced noise and improved lubrication, ensuring precise assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gears and pump cylinder are intimately assembled to prevent fluid leakage, then sealing performance is improved, but collision between gears and pump cylinder occurs generating noise
Solution Approach 1:
A damping layer is introduced as an intermediary between the pump cylinder and the driving gear. This damping layer serves as a mediator that maintains the intimate assembly needed for sealing while preventing direct contact between the gear and pump cylinder, thereby eliminating collision noise.
2Reliability
If the gears and pump cylinder are intimately assembled to prevent fluid leakage, then sealing performance is improved, but wear between gears and pump cylinder increases
Solution Approach 1:
The damping layer acts as a protective intermediary that prevents direct contact between the gear and pump cylinder. This mediator maintains the necessary intimate assembly for sealing performance while eliminating direct wear between components, thereby extending component life.
3Strength
If wear-resistant material is used for the washer, then wear resistance is improved, but manufacturing cost increases
Solution Approach 1:
Instead of making the entire washer from expensive wear-resistant material, the damping layer is applied only to the specific contact surfaces between the washer and the gear/pump cylinder. This localized application of wear-resistant properties reduces material costs while maintaining wear resistance where it is most needed.
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 effectively reduces noise and wear by preventing direct contact between gears and pump components, ensuring smooth operation and extended component life with reduced maintenance costs.
Implementation Method 1
a damping layer is disposed between the pump cylinder and the driving gear
Implementation Method 2
a washer made of wear-resistant and/or high temperature resistant material is disposed between the pump body and an end surface of the driving gear
Data Source
AI summary
A gear pump has a pump body, a pump cylinder connected with the pump body, a driving gear and a driven gear meshed with each other and disposed in the pump cylinder, and a rotor driving the driving gear through a driving shaft, and a sealing member. The pump cylinder is located between the pump body and the sealing member. The driving gear is mounted to or integrally formed with the driving shaft. The open end of the sealing member extends out of the outer housing and is sealingly connected with the pump cylinder so as to form a cavity, and the rotor and the driving gear mounted on the driving shaft are received in the cavity and have a coaxiality with the stator.