Grease Injection Nipple With Auto Shutoff for Leak-Free Separation
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Solution Overview
Problem
Existing grease injection systems face issues with grease leakage and contamination during the injection and separation processes due to high pressure in the grease pipe, requiring manual operation to open and close the valve, which is inconvenient and leads to grease loss.
Innovation Solution
A grease injection nipple with a push body, check valve, and valve activation portion that allows for easy fastening and separation from a grease supply target without external force, incorporating a latching mechanism and elastic recovery member to maintain a firm engagement and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a check-type nipple is used for grease injection, then grease can be supplied to the target, but grease leaks during separation and causes contamination
Solution Approach 1:
The patent combines the valve function and nipple function into a single integrated component. The valve body includes both the grease supply channel and the nipple structure, so that opening/closing the valve simultaneously controls grease flow and maintains seal integrity during separation, eliminating the need for separate valve and nipple operations that cause leakage.
Solution Approach 2:
The valve mechanism is designed to automatically maintain sealing through its internal structure. When the valve is closed, the valve head naturally seals against the valve seat, and the nipple structure maintains engagement with the target without requiring additional manual sealing actions, preventing grease leakage during separation automatically.
2Ease of operation
If a handle-type on/off valve is used, then grease flow can be controlled, but manual operation is required for each supply/interruption cycle
Solution Approach 1:
The patent removes the external handle mechanism and extracts the valve control function into the nipple body itself. The valve is activated by the insertion and removal motion of the nipple, eliminating the need for separate handle operations and reducing the number of manual steps required for each grease injection cycle.
Solution Approach 2:
The nipple is designed to perform multiple functions: it serves as both the injection target interface and the valve actuator. The same insertion motion that connects the nipple to the target also opens the valve, and removal simultaneously closes the valve and disconnects the nipple, combining multiple operations into a single action.
3Power
If high pressure is maintained in the grease pipe, then grease can be effectively injected, but grease discharges between the nipple and target during separation
Solution Approach 1:
The valve is designed to close before the nipple fully separates from the target. The sealing mechanism is positioned and dimensioned so that as the nipple begins to withdraw, the valve head maintains contact with the valve seat, creating a seal that prevents high-pressure grease from discharging into the space between the nipple and target during the separation process.
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 system effectively functions as an opening/closing valve for the grease pipe, ensuring secure engagement and preventing grease leakage during injection and separation, simplifying the operation and reducing grease loss.
Implementation Method 1
an elastic recovery member (153) which is provided inside the rotation member (152) and is pressed when the push body (110) moves forward, thereby applying the elasticity to the rear side of the first body portion (111)
Data Source
AI summary
The present invention relates to a grease injection nipple coupled to a grease pipe such that the same can function as an opening/closing valve with regard to the corresponding grease pipe, the grease injection nipple being pushed against a nipple of a grease supply target and coupled thereto or separated therefrom. The grease injection nipple according to the present invention comprises a push body, a check valve, a nipple coupling portion, and a valve activation portion. The valve activation portion may operate such that, when the push body makes a primary movement in the forward direction, the check valve is opened and, when the push body makes a secondary movement in the forward direction after external force for the primary movement of the push body is released, the check valve is closed.