Plastic coarse bubble diffuser for waste water aeration systems
US5032325A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Nov 2, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/231265
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A generally tubular coarse bubble diffuser for aerating waste water is constructed of polyvinyl chloride or a similar plastic material. The diffuser body has a main section with flat side walls through which outlet ports are formed. The opposite ends of the diffuser body are cylindrical and are connected with the main section by transition sections which avoid abrupt changes in the wall thickness or diffuser connector diameter. One end is solvent welded in a plastic Tee fitting and the other end receives a removable end cap. The flat walls provide efficient oxygen transfer and the cylindrical ends allow the use of a threaded end cap and a secure large diameter solvent weld connection to the Tee fitting which directs air to the diffuser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.