Water Flow Branching Device with Throttling Orifices
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Solution Overview
Problem
Conventional rainwater discharge systems face challenges in efficiently splitting sewage flow between treatment and public water systems, leading to increased treatment load and costs due to a low splitting function, necessitating larger and more expensive sewage treatment apparatuses.
Innovation Solution
A flowing water splitting apparatus with a first and second flowing water channel, including a weir and partition wall portions forming water diversion chambers, and flow throttle orifices to throttle the flow quantity, directing most sewage to the rainwater pipe and reducing the load on the sewage treatment apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional rainwater discharge chamber with simple flowing water channel is used, then device complexity is low, but splitting function is insufficient causing excessive sewage to dirty water pipe
Solution Approach 1:
The flowing water channel is divided into multiple segments by partition wall portions, creating a multi-chamber structure that sequentially throttles and directs water flow. This segmentation enables progressive flow control to improve the splitting function between rainwater and sewage pipes.
Solution Approach 2:
Partition wall portions are added in the width direction of the flowing water channel, transforming it from a simple single-channel structure to a multi-dimensional chambered structure. This dimensional enhancement enables multiple flow paths and improved flow distribution control.
2Reliability
If more sewage is directed to dirty water pipe for treatment, then treatment reliability is improved, but treatment load increases requiring larger facilities
Solution Approach 1:
Flow throttle portions with specific opening areas are introduced to precisely control and adjust the flow quantity parameters. By changing the throttle opening area, the system optimizes the distribution ratio between rainwater and sewage pipes, reducing the quantity of sewage requiring treatment while maintaining treatment reliability.
3Productivity
If larger sewage treatment apparatus is used to handle increased load, then treatment capacity is improved, but facility cost increases significantly
Solution Approach 1:
The flow splitting and throttling actions are performed in advance within the rainwater discharge chamber, separating treatable sewage from rainwater before the sewage reaches the treatment apparatus. This preliminary separation reduces the load on treatment facilities, avoiding the need for larger and more expensive infrastructure.
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
Enhances the splitting function of sewage flow, reducing the quantity sent to the dirty water pipe and thus decreasing the operational load on the sewage treatment apparatus, avoiding the need for larger or more expensive facilities and maintaining cost-effectiveness.
Implementation Method 1
a weir 112 having a predetermined height is formed on one side thereof in the width direction. Therefore, the sewage flowing in from the confluent pipe 104 will flow through the first flowing water channel 110 surrounded on both sides by an inner wall of the rainwater discharge chamber main body 102 and the weir 112
Implementation Method 2
a flow throttle portion formed in the partition wall portion to throttle a flow quantity of the flowing water flowing from one of the water diversion chambers into another of the water diversion chambers
Data Source
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AI summary
To provide a flowing water splitting apparatus, a flowing water splitting method, and a sewage system each capable of enhancing the flow quantity splitting function for flowing water by a simple structure to reduce the flow quantity of the flowing water flowing to a dirty water pipe. A flowing water splitting apparatus 10 includes a first flowing water channel 20 including a weir 28 defining a water quantity of the flowing water flowing in from a confluent pipe 14 and leading the flowing water flowing in from the confluent pipe 14 to a dirty water pipe 16; a second flowing water channel 32 leading flowing water flowing over the weir 28 to a rainwater pipe 18; a partition wall portion 26 provided to block the flowing water flowing through the first flowing water channel 20 to form a plurality of water diversion chambers 28 partitioned in the first flowing water channel 20; and a flow throttle portion 30 formed in the partition wall portion 26 to throttle a flow quantity of the flowing water flowing from one water diversion chamber into another water diversion chamber 28.