Greenhouse Spray Pipe Joint With Separate Sealing and Locking
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Solution Overview
Problem
Existing greenhouses face challenges in simultaneously achieving watertightness and connection stability in spray pipe joints, often resulting in poor sealing or damage due to inadequate locking force and sealing ring pressure.
Innovation Solution
The greenhouse design incorporates a pipe joint system with a connecting pipe and rotary sleeves, where a washer separates the sealing and locking sleeves, allowing independent adjustment of watertightness and connection stability through thread-tightening, ensuring appropriate pressing forces for both sealing and locking without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the locking ring is pressed tightly to improve connection stability, then the locking force increases, but the sealing ring may be damaged or deformed resulting in poor watertightness
Solution Approach 1:
The patent divides the original single-ring structure into two separate components: a locking ring for connection stability and a sealing ring for watertightness. This segmentation allows each component to perform its specific function independently without interfering with the other, resolving the contradiction between connection stability and watertightness.
Solution Approach 2:
The patent introduces a rubber cushion ring as an intermediary component between the locking ring and the sealing ring. This cushion ring absorbs and distributes the pressing force, preventing the locking ring from directly damaging the sealing ring while still providing sufficient locking force for connection stability.
2Reliability
If the sealing ring is pressed excessively to improve watertightness, then the sealing force increases, but the sealing ring is damaged resulting in long-term sealing failure
Solution Approach 1:
The patent places a rubber cushion ring between the locking ring and sealing ring in advance. This cushioning structure is designed to absorb excess pressing force before it reaches the sealing ring, protecting the sealing ring from damage while ensuring sufficient sealing pressure, thus maintaining both watertightness and long-term durability.
3Stability of the object's composition
If the locking ring contracts radially to improve locking force, then the connection stability increases, but the sealing ring is affected resulting in poor watertightness
Solution Approach 1:
The patent separates the locking function and sealing function into distinct components: the locking ring handles radial contraction for connection stability, while the sealing ring (protected by the cushion ring) maintains watertightness. This segmentation prevents the radial contraction of the locking ring from affecting the sealing ring's sealing performance.
4Device complexity
If a single ring structure is used to achieve both sealing and locking, then the device complexity is reduced, but it is difficult to simultaneously meet both watertightness and connection stability requirements
Solution Approach 1:
The patent divides the single ring structure into multiple specialized components (locking ring, sealing ring, and cushion ring), each optimized for its specific function. This segmentation increases structural complexity slightly but enables simultaneous achievement of both watertightness and connection stability, which was impossible with a single ring structure.
Solution Approach 2:
The patent combines multiple functions (locking, sealing, and force distribution) into an integrated pipe joint system where the locking ring, sealing ring, and cushion ring work together cooperatively to achieve both connection stability and watertightness simultaneously.
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 both watertightness and connection stability by allowing for precise adjustment of the sealing and locking forces, ensuring long-term sealing efficiency and preventing damage to the sealing ring, while allowing for easy assembly and adjustment of pipe lengths.
Implementation Method 1
the sealing ring is capable of radially contracting and grasping the pipeline tightly
Implementation Method 2
an outer peripheral surface of the locking ring is also a tapered surface. When the connecting sleeve is thread-tightened, the locking ring can be pressed tightly, the locking ring moves in an axial direction and presses the sealing ring tightly to achieve sealing, while the locking ring is capable of radially contracting and grasping the pipeline tightly under an action of the tapered surface
Data Source
AI summary
A greenhouse comprises a support frame and a spray pipe including pipes and pipe joints, the pipe joint comprises a connecting pipe and two rotary sleeves, the two adjacent pipes are respectively inserted into the connecting pipe, ends of a first pipe are respectively sleeved with a sealing sleeve and a locking sleeve, and each of the ends of the first pipe is further sleeved with a washer. When the rotary sleeve is thread-tightened, the connecting pipe and the locking sleeve are capable of respectively abutting and pressing against two sides of the washer, under abutting and pushing of the rotary sleeve and limiting of the washer, the locking sleeve is capable of grasping the first pipe and forming an axial positioning with the rotary sleeve. An inner edge of an end surface of the connecting pipe has a sealing tapered surface capable of acting on the sealing sleeve.