Self-Cleaning Excreta Handling Device Using Suction and Pumping
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Solution Overview
Problem
Existing excreta handling devices require separation and manual cleaning, which is inconvenient and poses hygiene risks due to bacterial propagation from excreta splashing or attachment to suction pipes.
Innovation Solution
A method and device for cleaning and sterilizing excreta handling devices by positioning the suction pipe ends on the same line, using a pump to supply cleaning water to a preset level, and then suctioning it, with optional disinfectant addition and nozzle direction adjustment for thorough cleaning and sterilization without separating components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are separated and manually cleaned, then cleaning thoroughness is improved, but operation convenience deteriorates
Solution Approach 1:
The excreta handling device performs self-cleaning by using its own suction capability to draw cleaning water through the suction pipe and components, eliminating the need for manual disassembly and cleaning by users. The system serves itself by utilizing its functional components (suction part, pump, water supply) to clean its own internal pathways.
Solution Approach 2:
The invention uses hydraulic principles by circulating cleaning water through the suction pipe and components under pump pressure. The cleaning water flows through the same pathways that handle excreta, effectively flushing out residues and bacteria without requiring physical disassembly of components.
2Reliability
If device is moved to water supply location for cleaning, then cleaning effectiveness is improved, but operation convenience deteriorates
Solution Approach 1:
The device incorporates its own water supply system (cleaning water supply part) and pump mechanism, allowing it to perform cleaning operations in-situ without needing to be transported to an external water supply location. The system is self-sufficient with integrated water storage and circulation capabilities.
Solution Approach 2:
The water supply part and pump serve dual functions: they provide water for normal operation and also facilitate cleaning operations. The suction pipe and related components handle both excreta removal and cleaning water circulation, reducing the need for separate cleaning infrastructure.
3Productivity
If cleaning water is supplied quickly, then cleaning speed is improved, but cleaning quality deteriorates
Solution Approach 1:
The cleaning process operates in periodic cycles: the pump supplies cleaning water in pulses, the water flows through the suction pipe and components, and the suction part draws the water through the system. This periodic circulation ensures both thorough cleaning and adequate processing time.
Solution Approach 2:
The cleaning water is continuously circulated through the system with the pump maintaining constant flow through the suction pipe and components. The continuous circulation ensures that cleaning action is sustained throughout the entire system, preventing stagnation and ensuring comprehensive cleaning coverage.
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
Enables non-stop cleaning and sterilization of excreta handling device paths without separating the device, improving user convenience and efficiency by soaking dried excreta and reducing bacterial propagation risks.
Implementation Method 1
a pump being formed therein to provide a pumping force
Implementation Method 2
a suction part connected to the suction pipe to provide a suction force
Data Source
AI summary
A method for cleaning and sterilizing an excreta handling device includes: positioning one end and the other end of the suction pipe on the same line; driving the pump to supply the cleaning water to a preset water level in the inner space through the first nozzle part; and maintaining, for a predetermined time, a state in which the cleaning water has been supplied to the preset water level, and then driving the suction part to suck the cleaning water contained in the inner space.