Back pressure flap valve arrangement and the use thereof
US10315059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2017 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Dec 26, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/0093
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A back pressure flap valve arrangement is disclosed. The arrangement comprises a housing (101) having an inlet opening (102) and an outlet opening (103) adapted for connection of the housing (101) to a ducting (200), and at least one side wall (104) extending along a flow direction through the housing (101) from the inlet opening (102) to the outlet opening (103). A flap (1) is pivotably hinged about a shaft (5) thereby being movable between an open position and a closed position, said shaft (5) extending transverse the flow direction. At least one locking device (10) is fixedly mounted to the side wall (104) and comprises a locking pin (14) and a stopping member (12). The locking pin (14) is movable between a retracted position and a locking position, and being biased towards said locking position. The stopping member (12) is movable from a stop position in which the stopping member (12) is adapted to hold the locking pin (14) in its retracted position, to a release position by the flap (1) acting on the stopping member (12) in case of a back pressure. Thereby the locking pin (14) is allowed to move into the locking position in which the locking pin (14) maintains the flap (1) in …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.