Accumulator Sprayer Valve Support for Zero Initial Set Pressure
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Solution Overview
Problem
Existing accumulator sprayers suffer from plastic deformation of the valve structure due to constant initial set pressure, leading to degraded resilience and potential liquid leakage.
Innovation Solution
The accumulator sprayer design ensures that the valve structure does not contact either the upper or lower support portions in the initial set state, with a specific length and distance relationship (L1<L2) to eliminate initial set pressure, using a reverse-dome-shaped spring and valve piston configuration to evenly apply resilient force and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring portion is always loaded by initial set pressure to keep the valve closed in the initial state, then the valve can maintain its closed state reliably, but the spring portion undergoes plastic deformation leading to degraded resilient force and potential leakage
Solution Approach 1:
The support structure is designed to dynamically change its load-bearing state: in the initial state, only the lower support portion contacts the valve structure (no initial pressure), while in the spraying state, both upper and lower support portions contact to provide stable support. This dynamic adjustment eliminates continuous plastic deformation while maintaining reliability when needed.
Solution Approach 2:
The patent changes the contact state parameter between the valve structure and support portions. By designing the distance L2 between support portions to be greater than the unloaded length L1 of the valve structure, the system transitions from a continuously loaded state to an initially unloaded state, preventing plastic deformation of the spring portion.
2Stability of the object's composition
If the valve structure is mounted to contact both upper and lower support portions in the initial state, then the structure appears more stable, but this causes continuous plastic deformation of the valve body
Solution Approach 1:
The support structure transitions from a static dual-contact design to a dynamic single-contact design in the initial state. The valve structure contacts only the lower support portion initially, eliminating continuous deformation. During spraying operation, both support portions engage to provide stability, thus resolving the contradiction between initial stability and dimensional precision.
Solution Approach 2:
The patent applies preliminary anti-action by designing the initial state to prevent the harmful effect of continuous loading before it can cause damage. By ensuring the valve structure does not contact the upper support portion in the initial state, the system prevents plastic deformation from occurring in the first place, rather than trying to compensate for it later.
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 design reduces initial set pressure to zero, minimizing plastic deformation, ensuring stable valve operation and preventing leakage, with smooth opening and closing of the valve.
Implementation Method 1
the resilient force of a spring, and when the fluid pressure inside the cylinder exceeds the resilient force in a state in which the first valve is closed, the second valve opens
Implementation Method 2
pulling back the trigger and sliding a piston against the cylinder, and then to forcefully spray the liquid inside the cylinder out of the nozzle
Data Source
AI summary
An accumulator sprayer X comprises a cylinder body portion B having a main cylinder portion B1 and a sub-cylinder portion B2, and a cover portion C attached to cover the cylinder body portion B. The accumulator sprayer is attached to a container J to suck up liquid in container J to the main cylinder portion via a first valve FV, apply pressure to the liquid in the main cylinder portion, and spray the liquid from a nozzle portion F via a valve structure A when the pressure exceeds a certain pressure, and the valve structure is mounted between a lower support portion B23 of the sub-cylinder portion and an upper support portion C1 of the cover portion, and a length L1 of the valve structure in unloaded state and a shortest distance L2 between the lower support portion and the upper support portion satisfy the relational expression L1<L2.