Sewer Vent Valve with Gas Filter for Odor Elimination
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Solution Overview
Problem
Sewer venting devices fail to effectively eliminate malodorous compounds such as hydrogen sulfide and methyl mercaptan when venting gases from sewer pipes, leading to odor discharge and potential structural issues due to vacuum conditions.
Innovation Solution
A sewer venting valve unit combined with a gas filter unit using materials like activated carbon or charcoal to filter outflowing gases, preventing liquid discharge and allowing airflow to bypass the filter, thus eliminating offensive odors and maintaining system integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sewer venting valve is used to vent gases from sewer pipes, then gas flow is enabled and vacuum conditions are prevented, but malodorous compounds such as hydrogen sulfide and methyl mercaptan are discharged into the atmosphere
Solution Approach 1:
A gas filter unit containing filter medium is introduced as an intermediary component between the sewer venting valve and the atmosphere. The filter medium captures and removes malodorous compounds from the gas stream while allowing the venting function to continue, thus eliminating the harmful odor discharge without compromising the reliable venting operation.
2Object-generated harmful factors
If a gas filter is added to remove odors from vented gases, then odor discharge is eliminated, but the device complexity increases
Solution Approach 1:
The gas filter unit is merged with the existing sewer venting valve assembly, with the filter unit positioned directly in the gas flow path of the valve. This integration allows the odor removal function to be added while minimizing the increase in overall device complexity by utilizing the existing valve structure and space.
3Object-generated harmful factors
If filter medium is used to capture malodorous compounds, then odor elimination is achieved, but the filter requires periodic replacement reducing productivity
Solution Approach 1:
The filter medium is designed to be periodically replaced when saturated with malodorous compounds. The system allows for the discarding of the saturated filter medium and replacement with fresh material, maintaining continuous effective odor elimination while accepting the periodic interruption for maintenance.
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 effectively filters out malodorous gases, preventing their release into the atmosphere and reducing vacuum risks by ensuring air can be drawn into the sewer pipe, thereby maintaining flow and structural integrity of the sewer system.
Implementation Method 1
The filter unit contains a gas filter medium such as activated carbon, charcoal, compost, or other material which will react with compounds in the gases from the sewage to thereby eliminate the discharge of offensive odors from the sewer pipe when gases are vented therefrom.
Implementation Method 2
The valve is normally in an open position such that gases can flow out from the sewer pipe or air can be drawn into the sewer, as necessary. However, the presence of a liquid within the housing raises the float, causing the valve to seat to prevent sewage from being discharged through the venting valve.
Data Source
AI summary
A sewer pipe gas exhaust filter apparatus includes a sewer vent valve unit connected to a sewer pipe and including a valve member moved into and out of engagement with a valve seat by a float member, a gas filter unit connected to the sewer vent valve unit and including a gas filter medium, and a gas flow valve arrangement to cause gases from the sewer to flow through the filter medium while bypassing air drawn into the sewer pipe past the gas filter unit. The filter medium of the gas filter unit removes chemical components from air and gas exhausted from the sewer pipe, thereby improving the odor of such exhausted gases.