Viscosity Drive Device for In-Ground Sprinkler Head
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Solution Overview
Problem
Traditional hydraulic driving devices for in-ground sprinkler heads are complex, costly to manufacture and assemble, and suffer from fluctuations in rotational speed due to water pressure changes, leading to potential gear damage.
Innovation Solution
A viscosity driving device with a tangential flow generator and hydraulic rotator that utilizes water viscosity to drive the sprinkler head, eliminating the need for gear pairs and featuring a two-grade drive mechanism with liquid friction components, simplifying assembly and reducing rotational speed variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional multi-piece airfoil impeller and multi-grade gear pair structure is used, then the spraying head can rotate and spray water, but the manufacturing and assembly difficulty increases significantly
Solution Approach 1:
The patent extracts and removes the complex multi-grade gear pairs from the driving mechanism, replacing them with a simplified airfoil impeller directly connected to the spraying head. This extraction of unnecessary intermediate transmission components directly reduces manufacturing and assembly difficulty while maintaining the core spraying function.
Solution Approach 2:
The patent replaces the traditional mechanical gear transmission system with a direct airfoil impeller-driven rotation system. The airfoil impeller converts water flow energy directly into rotational motion of the spraying head, eliminating the need for complex mechanical gear pairs and their associated manufacturing precision requirements.
2Manufacturing precision
If high rotating speed driving gear is used, then the spraying head can rotate effectively, but the mounting accuracy and manufacturing accuracy requirements increase
Solution Approach 1:
The patent replaces the high-speed gear transmission system with a direct airfoil impeller connection to the spraying head. This substitution eliminates the need for high-precision gear shafts and mounting accuracy, as the airfoil impeller directly converts water flow into rotational motion without intermediate mechanical transmission stages.
3Reliability
If hard connection gear pairs are used from driving gear to nozzle, then the mechanical transmission is strong, but the rotational angular velocity fluctuates with water pressure changes
Solution Approach 1:
The patent introduces a dynamic damping mechanism between the airfoil impeller and the spraying head rotation system. This damping mechanism allows the system to absorb water pressure fluctuations and maintain stable rotational speed, transforming the rigid hard connection into a more flexible dynamic connection that compensates for pressure variations.
4Ease of manufacture
If multiple gear pairs are used for deceleration, then the rotational speed can be controlled, but the assembly difficulty and cost increase
Solution Approach 1:
The patent extracts and removes the multi-grade gear pairs from the system, eliminating the need for complex deceleration mechanisms. The airfoil impeller provides direct rotational motion to the spraying head, significantly simplifying the assembly process and reducing the number of components that need to be assembled.
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 simplifies the manufacturing and assembly process, reduces the impact of water pressure fluctuations on rotational speed, and extends the lifespan of the device by eliminating gear-related issues.
Implementation Method 1
the spraying head driving unit works based on cooperation of the tangential flow generator and the hydraulic rotator. Water filtered by the filter flows into the tangential flow generator from the flow inlets and rotates inside the tangential flow generator because of the specially arranged flow inlets of the tangential flow generator. The rotating water drives the hydraulic rotator to rotate under the action of viscosity and thus drive the spraying head to rotate and spray water.
Data Source
AI summary
A viscosity driving device for a lifting buried spraying head includes a cylindrical case (2), a filter (3) provided in the lower end of the case (2), and a spraying head driving unit disposed inside the case (2). The spraying head driving unit is connected with a spraying head positioned on the top end of the case (2) by means of a connecting shaft, and the spraying head driving unit drives the spraying head to rotate and spray water. The spraying head driving unit comprises a tangential flow generator (4) and a hydraulic rotator (5), and the hydraulic rotator (5) rotates under the action of viscosity of rotating water generated by the tangential flow generator (4) to drive the spraying head to rotate and spray water.