Self-Cleaning Shower-WC Attachment With Pressure Block Valve
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Solution Overview
Problem
Existing non-electric shower toilet attachments with self-cleaning devices face issues such as water leakage, incomplete cleaning of the telescopic water outlet pipe, and unsanitary conditions due to inadequate water pressure and design limitations, where the cleaning water flow cannot effectively reach the water outlet port and the pipe is not properly cleaned after use.
Innovation Solution
A self-cleaning device for a non-electric shower toilet seat featuring a body with a cleaning water path and a one-way valve system, where the telescopic water outlet pipe is reciprocally movable, allowing cleaning water to flow from the cleaning water path to the water flow passage, and a pressure block closes the one-way valve when the pipe reaches its outlet position, ensuring thorough cleaning without spraying the user and preventing water leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cleaning water flows out from the gap between the shower arm and the shower body to clean the shower arm, then the shower arm can be cleaned, but water sprays on other parts of the human body and the cleaning water cannot reach the water outlet port
Solution Approach 1:
The patent extracts the cleaning water flow from the gap between the shower arm and shower body, and redirects it through a dedicated cleaning water path that opens directly at the water outlet port, separating the cleaning function from the spray function
Solution Approach 2:
The patent introduces a cleaning water path as an intermediary channel that delivers cleaning water directly to the water outlet port, avoiding the need to spray through the gap and ensuring precise delivery of cleaning water
2Device complexity
If the gap between the shower arm and shower body is used for self-cleaning, then the structure is simple, but water leakage occurs when water pressure is insufficient and the gap cannot block the water
Solution Approach 1:
The patent segments the water flow paths into distinct channels: a main water path for spraying and a separate cleaning water path for cleaning, each with its own control mechanism, eliminating the reliance on gap blocking
Solution Approach 2:
The patent introduces a one-way valve as an intermediary component in the cleaning water path that automatically controls water flow based on pressure differential, providing reliable water blocking without complex mechanisms
3Ease of operation
If the telescopic water pipe retracts back into the attachment after use, then the device returns to storage position, but the water outlet and cleaning water path stop simultaneously leaving the pipe uncleaned
Solution Approach 1:
The patent designs the system so that during the retraction process, the pressure differential automatically opens the one- way valve to enable cleaning water flow, performing the cleaning action in advance before the pipe fully retracts and contaminates
Solution Approach 2:
The patent uses pressure feedback from the water flow to automatically control the one-way valve: when water flows through the telescopic pipe during retraction, the pressure differential opens the valve to enable cleaning, and when water stops, the valve closes automatically
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 solution enables self-cleaning of the telescopic water outlet pipe from top to bottom without spraying the user, effectively blocking the cleaning water flow when the pipe is in the outlet position, ensuring the pipe is thoroughly cleaned and preventing water leakage, even with low water pressure, and allows for residual water to be used for secondary cleaning during retraction.
Implementation Method 1
A one-way valve is provided at the water inlet end of the water flow passage, and the water flow of the cleaning water path can open the one-way valve to supply the water to the water flow passage
Implementation Method 2
a pressure block disposed at a rear end of the telescopic water outlet tube, the pressure block being pressed against the one-way valve to close the water inlet end of the water flow passage when the telescopic water outlet tube reaches the water outlet position
Implementation Method 3
The telescopic water outlet pipe is reciprocally movable between a home position and a water outlet position
Data Source
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AI summary
The invention relates to a self-cleaning device for a non-electric shower toilet seat, which is used for self-cleaning a telescopic water outlet tube (A) of the non-electric shower toilet seat. The self-cleaning device comprises a body (10) and a cleaning water path (20), wherein a water flow passage (12) for cleaning the water outlet tube (A) is provided in the body (10). The self-cleaning device further comprises a pressure block (40) which is arranged at a rear end of the water outlet tube (A) and closes the water flow passage (12) when the water outlet tube (A) reaches a water outlet position.