Modular Rotary Valve Housing for Cyclic Air Supply Switching
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Solution Overview
Problem
Existing rotary valves for cyclically supplying compressed air to water filtration units in wastewater treatment are complex and require separate manufacturing for different angular offsets and outlet configurations, making them difficult to handle, service, and adapt to varying applications.
Innovation Solution
The rotary valve is designed with a modular outer housing and drum, composed of axially joined segments, allowing for variable angular offsets and outlet configurations, simplifying manufacturing and enabling easy assembly and service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer housing is manufactured as a single large piece, then the structural integrity is maintained, but the handling and manufacturing complexity increases
Solution Approach 1:
The outer housing is divided into multiple axially joined segments that can be manufactured separately and assembled together. This segmentation reduces the complexity of manufacturing and handling each individual segment while maintaining the overall structural integrity of the housing when assembled.
2Ease of manufacture
If the rotary valve is designed with fixed angular offsets, then the manufacturing process is simplified, but the adaptability to different applications is reduced
Solution Approach 1:
The housing segments are designed to be joinable at different angular positions relative to each other, allowing the angular offset between valve outlets to be adjusted based on application requirements. This dynamic configurability enables the same modular housing to adapt to different angular offset requirements without requiring completely different manufacturing molds.
Solution Approach 2:
The modular housing segments can be assembled in various configurations to create different angular offsets and outlet arrangements, making a single set of segments universal for multiple applications. This multi-functionality allows the rotary valve to be adapted to different wastewater treatment configurations without requiring separate dedicated housings for each application.
3Ease of operation
If the rotary valve uses a one-piece housing design, then the assembly is straightforward, but the serviceability and maintenance access are limited
Solution Approach 1:
The segmented housing design allows individual segments to be removed and reassembled, providing easy access to internal components for maintenance and repair. The segments can be separated to facilitate servicing of the drum, seals, and other internal parts without requiring complete disassembly of the entire housing structure.
Solution Approach 2:
The housing segments are pre-designed with connection interfaces that simplify the assembly and disassembly process. The segments can be quickly joined or separated using the provided connection mechanisms, enabling rapid maintenance access while maintaining structural integrity during operation.
Data Source
Figure 1
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AI summary
The invention relates to a rotary valve (1) for the cyclical supply of compressed air (D) to at least two water filtration units (21, 22). It comprises a tubular outer housing (2) with at least one first valve outlet (4) and a second valve outlet (5) axially offset thereto, as well as a drum (3) rotatably arranged about a longitudinal axis (61) in the outer housing (2) with an inlet (16) for the compressed air (D) and at least one first and one second supply opening (7, 8, 9) which are axially offset from each other. When the drum (3) is rotated about the longitudinal axis (61), the first supply opening (7) overlaps with the first valve outlet (4) in a first angular range to supply the compressed air (D) to the first valve outlet (4), while it does not overlap in a second angular range.Furthermore, the second inlet opening (8) does not overlap the second valve outlet (5) in the first angular range, but does overlap it in the second angular range, in order to supply the compressed air (D) to the second valve outlet (5). The rotary valve (1) also includes an actuator (10) for rotating the drum (3). The outer housing (2) is composed of axially joined segments (2a, 2b, 2c), of which a first housing segment (2a) has the first valve outlet (4) and a second housing segment (2b) has the second valve outlet (5).