Gravity-Actuated Valve for Sewer Nozzle Control
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Solution Overview
Problem
Existing sewer inspection and cleaning devices have complex nozzle control mechanisms, making it difficult to selectively control and adjust ejection nozzles for effective cleaning and inspection.
Innovation Solution
A gravity-adjustable valve element that allows selective closure of exit nozzle devices, concentrating the operating medium on the remaining open nozzle, which can be easily adjusted in an unpressurized state and firmly fixed when pressurized, using a ball valve element that moves into valve seats by gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex mechanical switching valves are used to control multiple nozzles, then nozzle selection capability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical switching valves with a magnetic field-based control system. A magnet is positioned outside the device to attract a ferromagnetic valve element through the wall, opening or closing nozzles without mechanical contact or complex internal switching mechanisms. This substitution dramatically simplifies the mechanical design while maintaining full nozzle selection capability.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the external control mechanism and the internal valve element. The magnetic field acts as a mediator that transmits control signals through the device wall without requiring mechanical penetration or complex linkages, thereby reducing device complexity while preserving adaptability.
2Adaptability or versatility
If multiple nozzles are always open to provide cleaning options, then cleaning versatility is improved, but operating medium loss increases
Solution Approach 1:
The patent extracts the unnecessary flow paths by closing specific nozzles through magnetic actuation of valve elements. By selectively blocking flow paths that are not needed for the current cleaning task, the system maintains versatility while eliminating wasteful operating medium loss through always-open nozzles.
Solution Approach 2:
The magnetic valve elements are designed to be controlled from outside the device, allowing the operator to selectively close nozzles based on real-time cleaning needs. This self-service capability enables the system to adapt its own fluid distribution without external intervention, reducing waste while maintaining cleaning versatility.
3Ease of operation
If valve elements are adjusted under pressure, then operational control is improved, but adjustment difficulty and safety risks increase
Solution Approach 1:
The patent replaces pressure-dependent mechanical adjustment mechanisms with magnetic field actuation. The magnet can attract the ferromagnetic valve element through the device wall regardless of internal pressure conditions, allowing safe and simple adjustment without requiring complex pressure-balanced mechanisms or specialized high-pressure handling features.
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
Simplifies the selection and control of ejection nozzles, ensuring efficient resource distribution and stable operation during sewer inspection and cleaning, reducing complexity and improving operational efficiency.
Implementation Method 1
the valve element is selectively insertable at least into the first valve seat or into the second valve seat using gravity by moving the KIR head
Data Source
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AI summary
The sewer cleaning and/or sewer inspection head (100) comprises a gravity-adjustable valve element (150) by means of which one of several outlet nozzle assemblies (110) can be selectively closed. A supplied operating fluid is thus concentrated onto at least one remaining open outlet nozzle assembly (110) and expelled there. The valve element (150) is easily adjustable when no operating fluid is supplied, but fixed in place when operating fluid is supplied.