Connecting Device With Nested Rotor For Fire Hose
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Solution Overview
Problem
Existing connecting devices for hoses or pipes, particularly fire hoses, often malfunction or get caught by obstacles due to protruding levers and increased weight from high water pressure, making them difficult to maneuver during firefighting operations.
Innovation Solution
A connecting device design that incorporates a rotor rotating unit housed within the opening/closing unit, featuring a protrusion unit with a smaller diameter and a gear system, along with packing and oil rings for sealing, to prevent malfunctions and adjust fluid flow, while minimizing external protrusions and facilitating assembly and repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a general connecting device with a protruding handle and rotor is used to connect hoses, then the device can open and close the hose connection, but the protruding parts may be caught by corners or obstacles causing malfunction or movement disturbance
Solution Approach 1:
The rotor is rotated by nesting it within the opening/closing unit rather than having it protrude externally. The opening/closing unit acts as a housing that contains the rotor mechanism, allowing the rotor to be operated through the wall thickness of the unit without exposing protruding parts that could catch on obstacles.
2Stress or pressure
If the nozzle of the fire hose is closed to increase water pressure, then the fluid flow can be controlled, but the weight of the hose increases making movement and manipulation inconvenient
Solution Approach 1:
The connecting device integrates the pressure control function directly into the hose connection mechanism itself. By rotating the rotor within the opening/closing unit, the device automatically regulates fluid flow and pressure without requiring separate manual operation of hydrant valves or additional pressure control devices, thereby reducing the overall system weight and simplifying manipulation.
3Stress or pressure
If a separate hydrant valve is used to adjust hydraulic pressure, then the pressure can be controlled, but the device complexity increases and requires separate manipulation
Solution Approach 1:
The pressure control function is merged with the hose connection mechanism. The rotor and opening/closing unit combine the functions of connecting hoses and regulating fluid flow into a single integrated device, eliminating the need for separate hydrant valves or additional pressure control mechanisms.
Solution Approach 2:
The opening/closing unit serves multiple functions: it connects hoses together, houses and operates the rotor mechanism, seals the connection, and controls fluid flow and pressure regulation. This multi-functionality reduces device complexity by consolidating what would otherwise require separate components.
Data Source
AI summary
Disclosed is a connecting device. The disclosed connecting device includes a connecting unit whose inside is penetrated and opened and closed according to rotation of a rotor provided therein, and an opening/closing unit that is rotatably coupled to the connecting unit and opens and closes the inside of the connecting unit by rotating the rotor, when being rotated with respect to the connecting unit.