US3778982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scrubber for removing particulate matter from gaseous fluid
Assignee: HAAS W AND SOHN
•
Filing: 1972-05-25
•
Granted: 1973-12-18
•
Expires: 1992-05-25
Abstract
Abstract A filter unit is interposed in the flow path of a stream of particle-gaseous fluid and can be rotated about an upright axis. The filter unit has a pair of vertically spaced plates connected by connecting elements about which a web of filter material is trained to surround an interior chamber. The gaseous fluid passes through the filter material into the interior of the chamber from which the now filtered gaseous fluid is withdrawn by a conduit normally in communication with the chamber and also in communication with a suction source. The particulate matter is retained at the exterior side of the web of filter material. The filter unit can be rotated about its upright axis to thereby eject the retained particulate matter by centrifugal force from the web of filter material, and a control arrangement interrupts the communication between the filter chamber and the withdrawal conduit for filtered material in automatic response to rotation of the filter unit, restoring the communication when the rotation terminates.
Inventors
- 👤 G Birke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:34
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/66; B01D46/74; B01D46/78; B01D46/02; B01D46/04; B01D46/06; B01D46/08; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02A50/2351
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
165 words
In a scrubber for removing particulate matter from gaseous fluid, in combination, a filter unit interposed in the flow of a stream of particle-carrying gaseous fluid and mounted for rotation about an upright axis, said filter unit comprising a pair of vertically spaced plates, a plurality of connecting elements connecting said plates, and a web of filter material trained about said connecting elements and surrounding said axis so as to define an interior chamber into which filtered gaseous fluid enters while particles are retained at the exterior side of said web; conduit means communicating with a source of suction and normally communicating with said interior chamber for withdrawing filtered gaseous fluid from the latter; rotating means for rotating said filter unit about said axis to thereby effect centrifugal ejection of retained particles from said web; and control means for interrupting communication between the entire interior of said interior chamber and said conduit means in automatic response to rotation of said filter unit about said axis.
Claim 2
Dependent Claim
165 words
In a scrubber for removing particulate matter from gaseous fluid, in combination, a filter unit interposed in the flow of a stream of particle-carrying gaseous fluid and mounted for rotation about an upright axis, said filter unit comprising a pair of vertically spaced plates, a plurality of connecting elements connecting said plates, and a web of filter material trained about said connecting elements and surrounding said axis so as to define an interior chamber into which filtered gaseous fluid enters while particles are retained at the exterior side of said web; conduit means communicating with a source of suction and normally communicating with said interior chamber for withdrawing filtered gaseous fluid from the latter; rotating means for rotating said filter unit about said axis to thereby effect centrifugal ejection of retained particles from said web; and control means for interrupting communication between the entire interior of said interior chamber and said conduit means in automatic response to rotation of said filter unit about said axis.
Claim 3
Dependent Claim
27 words
In a scrubber as defined in claim 1, wherein said connecting elements are so arranged as to support said web trained thereabout in a substantially star-shaped configuration.
Claim 4
Dependent Claim
32 words
In a scrubber as defined in claim 1, at least one of said plates having an aperture which communicates with said interior chamber; and wherein said conduit means communicates with said aperture.
Claim 5
Dependent Claim
41 words
In a scrubber as defined in claim 3, said filter unit further comprising a tubular conduit section provided on said one plate and communicating with said aperture, said conduit section having at least one oPening which communicates with said conduit means.
Claim 6
Dependent Claim
123 words
In a scrubber as defined in claim 3, said filter unit further comprising a tubular conduit section provided on said one plate and communicating with said aperture, said conduit section having two openings which communicate with said conduit means; and wherein said control means comprises a pair of segmental closure elements each dimensioned to close one of said openings, pivot means mounting said closure elements in said tubular conduit section for movement between an open and a closed position, and biasing means normally biasing said closure elements to said open position but only with such force that said closure elements can move to said closed position in response to the development of centrifugal force upon rotation of said filter unit about said axis.
Claim 7
Dependent Claim
45 words
In a scrubber as defined in claim 5, wherein said biasing means comprises helical springs each having opposite end portions which are respectively connected with said tubular conduit section and with one of said closure elements spaced from the pivot means associated with the latter.
Claim 8
Dependent Claim
44 words
In a scrubber as defined in claim 5, said conduit section further comprising a normally blocked inlet opening for admitting air intosaid interior chamber; and wherein said control means is operative for unblocking said inlet opening when said filter unit rotates about said axis.
Claim 9
Dependent Claim
28 words
In a scrubber as defined in claim 7, said control means effecting unblocking of said inlet opening in response to said closure elements reaching said closed position thereof.
Claim 10
Dependent Claim
14 words
In a scrubber as defined in claim 1, said connecting elements being substantially rod-shaped.
Claim 11
Dependent Claim
76 words
In a scrubber as defined in claim 9, wherein some of said connecting elements are located on an inner circle surrounding said axis, and others of said connecting elements are located on an outer circle surrounding said axis and said inner circle, said web of filter material being alternately trained about a connecting element of said inner circle and a connecting element of said outer circle so that said interior chamber is of substantially star-shaped configuration.
References Cited (Backward Citations)
US2732912A
Cited
US2795291A
Cited
US3008543A
Cited
US3004276A
Cited
US3343342A
Cited
US3716968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |