Airless Sprayer Plunger Pump Relocation for Leak Protection
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Solution Overview
Problem
Existing high-pressure airless spraying machines suffer from reduced service life due to liquid leaks damaging components, increased friction leading to wear, and inefficiencies in the plunger pump mechanism, posing safety risks and operational challenges.
Innovation Solution
The design includes a plunger pump with a pressure protection device, a control circuit board positioned on one side of the liquid storage container, and a transfer box with balls to reduce friction, along with an ejector rod to clear blockages, and a pressure detection system to ensure safe and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the plunger pump and control circuit board are arranged under the liquid storage container, then the structure is compact, but liquid leaks will damage components and reduce service life
Solution Approach 1:
The plunger pump is extracted from the position under the liquid storage container and relocated to the side of the container. This spatial separation ensures that liquid leaks from the storage container will not damage the pump components or cause controller short circuits, thereby resolving the contradiction between structural compactness and component protection.
2Speed
If a swash plate pushes against a balancing column and piston to realize reciprocating movement, then the reciprocating motion is achieved, but friction force accelerates wear and reduces efficiency
Solution Approach 1:
The traditional swash plate mechanism is replaced with a new structure comprising a transfer box, driving lever, and eccentric rotating structure. This substitution eliminates the sliding friction between the swash plate and balancing column, replacing it with a mechanism that reduces wear and improves driving efficiency while maintaining the reciprocating motion capability of the piston.
3Device complexity
If the transfer box moves reciprocally without ball guidance, then the structure is simple, but friction increases and driving efficiency decreases
Solution Approach 1:
Balls are introduced as intermediary elements between the transfer box and the guiding structure. These balls reduce friction by converting sliding contact into rolling contact, thereby improving driving efficiency. The balls serve as a mediator that maintains structural relative simplicity while significantly reducing wear and improving the reciprocating motion of the transfer box.
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 solution enhances the durability and safety of the spraying machine by preventing component damage from leaks, reducing friction, and maintaining efficient operation, thereby extending the machine's service life and ensuring consistent performance.
Implementation Method 1
at least one pair of balls are provided on two sides of the transfer box... the balls will contact with each other due to the linear passage of the transfer box, and then the balls are driven to rotate, thus greatly reducing the friction between the transfer box and the balls
Data Source
AI summary
A durable high-pressure airless spraying machine includes a housing, a liquid storage container and a plunger pump. The plunger pump includes a plunger chamber, a liquid inlet chamber, a liquid outlet chamber and a pressure relief valve, the bottom of the liquid storage container is connected with the liquid inlet chamber, the plunger chamber is provided with a pressure protection device, the plunger pump is arranged on one side of the liquid storage container. The plunger chamber is internally provided with a piston, a piston rod is fixedly provided at one end of the piston, the piston rod is driven by a driving mechanism to do a reciprocating movement, the driving mechanism includes a transfer box fixedly connected to one end of the piston rod, the transfer box is rotatably connected to a driving shaft, the other end of the driving shaft is rotatably connected to an eccentric rotating structure.