Angled Pump Mounting for Material Sprayer Stability
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Solution Overview
Problem
Material sprayers face challenges in efficiently engaging and disengaging the pump with the hopper and reciprocating drive mechanism, particularly due to the use of springs in check valves which can lead to leakages, blockages, and failure, and existing solutions do not adequately address the need for a compact and stable design for easy transportation.
Innovation Solution
A pump assembly with a pump axis oriented at an angle of 15 to 65 degrees relative to the vertical direction of gravity, featuring a coaxial piston and cylinder configuration, and a bent elbow connecting the pump to the hopper, allowing for a single linear motion attachment and detachment, which eliminates the need for springs and enhances stability and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If springs are used in check valves, then the pump can maintain fluid pressure, but the springs can lead to leakages, blockages, and failure
Solution Approach 1:
The patent removes springs from the check valve mechanism entirely, replacing them with a springless design that uses gravity and pressure differential to operate the check valves. This extraction of the problematic spring component eliminates the source of leakages, blockages, and failures while maintaining the pressure-regulating function through alternative means.
2Reliability
If the pump assembly uses traditional mounting, then it can be securely attached, but it increases complexity and difficulty of engagement and disengagement
Solution Approach 1:
The pump assembly is designed as a separable module that can be independently attached to and detached from the hopper and drive mechanism. The segmentation allows the pump to be mounted securely during operation while enabling quick removal for maintenance or replacement, achieved through standardized connection interfaces and alignment features.
Solution Approach 2:
The pump assembly includes pre-configured alignment features, connection points, and sealing elements that are prepared in advance. These preliminary arrangements ensure that when the pump is attached, it automatically aligns with the hopper and drive mechanism, engages sealing surfaces, and establishes fluid connections without requiring complex adjustment or multiple steps.
3Device complexity
If the pump axis is oriented vertically, then it simplifies the design, but it increases the overall height and reduces stability for transportation
Solution Approach 1:
The pump axis is deliberately oriented at an angle (15 to 65 degrees from vertical) rather than being perfectly vertical or horizontal. This asymmetric orientation optimizes the center of gravity distribution and reduces the overall height profile, improving transportation stability while maintaining design feasibility through adjusted internal component arrangements.
4Ease of repair
If the pump assembly is designed for easy detachment, then maintenance becomes simpler, but it may compromise the security of attachment during operation
Solution Approach 1:
The attachment system is designed with dynamic characteristics that provide different performance modes: during normal operation, the connection interfaces engage firmly to ensure secure attachment and prevent detachment; during maintenance, the same interfaces can be easily released through a simple action (such as releasing a latch or pushing a release mechanism). The system transitions between these states based on operational conditions.
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 enables efficient fluid pressurization, reduces the risk of leakages and blockages, and allows for easy transportation and maintenance of the material sprayer by simplifying the pump engagement and disengagement process while maintaining stability and compactness.
Implementation Method 1
a piston connected to the reciprocating drive mechanism such that the piston is coaxial with the pump axis and is driven by the reciprocating drive mechanism to reciprocate along the pump axis
Implementation Method 2
an elbow fluidly connecting the pump to the hopper, wherein the elbow is a bent tube configured to transport a fluid therethrough
Data Source
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AI summary
A pump (28) for use with a material sprayer (10) includes a cylinder (30), a piston (50), a pump head (70), first and second check valves (52, 56), and an elbow (34) connected to the cylinder (30). The cylinder (30) and the piston (50) are coaxial with a pump axis. The pump head is configured to make a mechanical connection with the reciprocating drive mechanism so as to allow the reciprocating drive mechanism to reciprocate the piston (50)along the pump axis.