Oscillating Sprinkler Adjustable Plates Friction Reduction
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Solution Overview
Problem
Conventional oscillating sprinklers face issues with smooth operation due to significant friction between nozzles and plates, limiting the ability to adjust for different sprinkling patterns, and often restrict to only fan-shaped or upright streams.
Innovation Solution
The oscillating sprinkler design features two adjustable plates with guide slots and control members that allow independent pivoting relative to the sprinkler axis, enabling various sprinkling patterns by positioning nozzles through holes and guide slots on the plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustment collars are located at the rear end of the plates and rotate to move nozzles, then the sprinkler can perform fan-shaped sprinkling, but the friction between nozzles and plates becomes significant causing rough operation
Solution Approach 1:
The invention divides the adjustment mechanism into two independent adjustment plates instead of using a single plate with adjustment collars. Each adjustment plate has guide slots that guide nozzle movement independently, eliminating the friction problem caused by nozzles moving together on a single plate. This segmentation allows each plate to be adjusted separately, maintaining smooth operation while achieving versatile sprinkling patterns.
Solution Approach 2:
The guide slots on the adjustment plates serve as intermediaries between the control members and the nozzles. Instead of nozzles directly contacting and moving on the adjustment collars (which causes friction), the guide slots provide a low-friction path for nozzle movement. The control members adjust the adjustment plates, which then guide the nozzles through the slots, reducing direct friction between nozzles and adjustment mechanism.
2Device complexity
If a single curved plate is used with control members, then the structure is simple, but only upright streams and fan-shaped curtains are available
Solution Approach 1:
The single curved plate is divided into two separate adjustment plates, each capable of independent adjustment. This segmentation increases the versatility of the sprinkler by allowing different combinations of plate angles to create various sprinkling patterns beyond just fan-shaped and upright streams, including alternating and asymmetric patterns.
Solution Approach 2:
The two adjustment plates can be dynamically adjusted to different positions independently of each other. This dynamic adjustability allows the sprinkler to switch between multiple sprinkling patterns by changing the relative positions of the two plates, providing greater versatility while maintaining a relatively simple overall structure.
3Adaptability or versatility
If two adjustment plates with independent control members are used, then multiple sprinkling patterns are achieved, but the device complexity increases
Solution Approach 1:
Both adjustment plates use the same basic structure with guide slots and control members, making them universal components. This multi-functionality allows the same design to be replicated twice, and the plates can be used in various combinations to achieve different sprinkling patterns, reducing the need for additional specialized components.
Solution Approach 2:
The two adjustment plates are combined in a symmetric arrangement around the sprinkler axis, with their first ends contacting each other. This merging of two independent adjustment mechanisms into a unified symmetric structure reduces overall complexity compared to having two completely separate adjustment systems, while still providing versatile sprinkling pattern control.
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 enhances operational smoothness and allows for multiple sprinkling patterns, including parallel streams and fan-shaped curtains, improving the versatility and effectiveness of water distribution.
Implementation Method 1
The friction between the nozzles and the plates is significant so that the operation of the adjustment collars is not smooth as expected
Data Source
AI summary
An oscillating sprinkler includes two adjustment plate rotatably mounted on a hollow tube of the body of the sprinkler and nozzles extend through the hollow tube and guide slots defined through the adjustment plates. Each of the two adjustment plates has two control members on two sides thereof so as to pivot the adjustment plate individually relative to the hollow tube. A top cover is mounted to the adjustment plates and has multiple guide holes, the nozzles extend through the guide holes.