US4717404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust separator
Assignee: L A Dreyfus Co
•
Filing: 1987-02-27
•
Granted: 1988-01-05
•
Expires: 2007-02-27
Abstract
Abstract A dry solids separator is described for removing powdery materials from a gas stream without a substantial overall pressure drop as said stream passes through the separator. The separator consists of a plurality of mutually spaced baffle plates disposed as at an angle to the inlet of the separator. Each plate consists of a plurality of mutually spaced channel shaped baffles opening into the gas stream and defining between adjacent baffles vertical slit nozzles. The channel shaped nozzles are also staggered so that the next adjacent downstream baffle will be behind an upstream nozzle.
Inventors
- 👤 Earl Fore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:56
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
153 words
A dry solids separator for removing powdery materials from a gas stream passing therethrough without a substantial pressure drop comprising: a housing having at least one gas inlet in communication with said gas stream and at least one gas outlet therefor, an opening in a front or back wall of the housing, and a drawer slidably received therein disposed between the inlet and the outlet; a plurality of mutually spaced, baffle plates slidably received within said drawer and disposed at an acute angle to the plane containing the inlet, each plate comprising a plurality of mutually spaced parallel, channel shaped baffles opening in the direction of flow of said gas stream through the inlet, adjacent baffles defining vertically oriented slit nozzles for accelerating the flow of gas therethrough, said individual baffles being staggered so that a baffle in each adjacent downstream plate is disposed behind each upstream nozzle in the adjacent upstream plate.
Claim 2
Dependent Claim
153 words
A dry solids separator for removing powdery materials from a gas stream passing therethrough without a substantial pressure drop comprising: a housing having at least one gas inlet in communication with said gas stream and at least one gas outlet therefor, an opening in a front or back wall of the housing, and a drawer slidably received therein disposed between the inlet and the outlet; a plurality of mutually spaced, baffle plates slidably received within said drawer and disposed at an acute angle to the plane containing the inlet, each plate comprising a plurality of mutually spaced parallel, channel shaped baffles opening in the direction of flow of said gas stream through the inlet, adjacent baffles defining vertically oriented slit nozzles for accelerating the flow of gas therethrough, said individual baffles being staggered so that a baffle in each adjacent downstream plate is disposed behind each upstream nozzle in the adjacent upstream plate.
Claim 3
Dependent Claim
19 words
The separator of claim 1 wherein a plurality of plates next adjacent the outlet define nozzles of decreased width.
Claim 4
Dependent Claim
42 words
The separator of claim 2 wherein the inlet and outlet are contained in vertical planes disposed at a 90° angle to each other so that the gas stream passing through the baffle plates must make a 90° turn to exit said housing.
Claim 5
Dependent Claim
26 words
The separator of claim 2 wherein said plurality of plates consists of three plates defining nozzle widths respectively of 1 inch, 3/4 inch and 1/2 inch.
Claim 6
Dependent Claim
26 words
The separator of claim 1 wherein said inlet is contained within a vertical plane and said plates are disposed at an angle thereto of about 30°.
Claim 7
Dependent Claim
66 words
The separator of claim 1 wherein said housing has front, back, top and bottom walls, and two end walls, and an inlet disposed in each end wall with a common outlet centrally disposed in the back wall and a pair of drawers are received through the front wall, the interior of said housing and the outlet being bisected by a dividing wall disposed between said drawers.
Claim 8
Dependent Claim
16 words
The separator of claim 6 wherein each drawer slidably receives six mutually spaced, interconnected baffle plates.
Claim 9
Dependent Claim
25 words
The separator of claim 7 wherein the inlets are contained within a vertical plane and said plates are disposed at about a 30° angle thereto.
Claim 10
Dependent Claim
19 words
The separator of claim 8 wherein the plurality of plates next adjacent the outlet define nozzles of decreased width.
Claim 11
Dependent Claim
24 words
The separator of claim 9 wherein said plurality consists of three plates defining nozzle widths respectively of 1 inch, 3/4 inch and 1/2 inch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |