Reciprocating Piston Pump Elastomer Valve Seat Damping
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Solution Overview
Problem
Reciprocating piston pumps face issues with leakage, complex assembly, and limited adaptability due to numerous parts and sealing points, which are exacerbated by thermal expansion and interference from magnetic fields, limiting their efficiency and flexibility in delivering liquids.
Innovation Solution
A simplified reciprocating piston pump design featuring a solenoid with a check valve and impact damping face made from elastomer material, which reduces noise, prevents leakage, and allows for easy assembly and adaptability by using a single component for both valve seat and impact damping, eliminating the need for separate damping parts and reducing the number of sealing points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reciprocating piston pump uses multiple separate components (valve seat, impact damper, metering cylinder) to ensure proper function, then the reliability and performance are improved, but the device complexity and number of sealing points increase, leading to higher leakage risk and more difficult assembly
Solution Approach 1:
The patent combines the valve seat and impact damper into a single integrated valve seat body made of elastomer material. This merging eliminates the need for separate damping parts and reduces the number of sealing points, thereby decreasing device complexity and assembly difficulty while maintaining reliability through the inherent damping properties of the elastomer material
Solution Approach 2:
The elastomer valve seat body performs multiple functions simultaneously: it acts as both the valve seat for the check valve and the impact damper for the piston rod. This multi-functionality reduces the number of components needed while ensuring proper pump operation and reducing leakage risks
2Reliability
If the pump uses multiple separate components with multiple sealing points to ensure proper function, then the performance is improved, but the ease of manufacture and assembly deteriorate due to intricate assembly requirements and tendency to jam
Solution Approach 1:
The valve seat and impact damper are merged into a single elastomer component that is molded as one piece. This eliminates the need for separate assembly steps and reduces the risk of jamming, making the pump easier to manufacture and assemble while maintaining sealing performance through the elastomer's inherent properties
3Ease of operation
If the pump design uses a canister-shaped armature piston with a gap for liquid passage, then the ease of operation is improved, but the magnetic power and liquid flow conditions deteriorate
Solution Approach 1:
The patent changes the material parameter of the valve seat body to elastomer, which provides both the necessary liquid passage characteristics and maintains magnetic field integrity. The elastomer material allows for optimized gap dimensions that balance liquid flow requirements with magnetic field strength, improving both ease of operation and magnetic power
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 results in a more reliable, cost-effective, and quieter pump with reduced leakage and sound emission, capable of maintaining efficient liquid delivery across varying swept volumes without the need for intricate assembly or additional electrical supplies.
Implementation Method 1
comprising a solenoid with an actuator and an outlet port
Implementation Method 2
the valve seat of the check valve and the impact damping face are made from the same elastomer material
Data Source
AI summary
The invention relates to a reciprocating piston pump for delivering a liquid. The pump includes a solenoid with an actuator and an outlet port. A check valve with a seat body is assigned to the outlet port for keeping a return flow of the liquid out of the reciprocating piston pump. The seat body bears an impact damping face at a front face facing away from a valve seat of the check valve, and the valve seat of the check valve and the impact damping face are made from the same elastomer material.