US4364755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter assembly
Assignee: Individual
•
Filing: 1981-12-17
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Granted: 1982-12-21
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Expires: 2001-12-17
Abstract
Abstract A filter assembly contains a filter drum provided with a stationary air pervious cylindrical filter jacket. The axis of the filter drum preferably extends approximately horizontally. A rotating hollow shaft extends through the filter drum and in radial direction is rigidly connected for rotation to at least one suction nozzle. This suction nozzle serves for sucking-off solid materials through the rotating hollow shaft, these solid materials being separated at the inside of the filter jacket. The hollow shaft carries at least one carriage or slide which is rigidly mounted for rotation in radial direction upon the hollow shaft. For performing oscillating movements in axial direction upon the hollow shaft, this carriage or slide is connected to a device for guiding the at least one suction nozzle along the undulated or wave-shaped path over the inside of the filter jacket. The filter assembly preferably comprises a circular, rotating sieve or filter disc, constituting a pre-separator, which covers a front end of the filter drum and is connected to the hollow shaft, and a stationary suction device which acts upon the flow-side front surface of the filter disc serves for removing pre-separated solids from the filter disc.
Inventors
- 👤 Hans Ferri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:56
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/26; B01D46/42; B01D46/44; B01D46/46; B01D46/66; B01D46/68; B01D46/682; B01D50/00; B01D50/20; B01D2273/00; B01D2273/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
251 words
A filter assembly for the removal of solid materials from a gas stream, especially from an air stream during textile processing comprising: a separator means; means for delivering to the interior of said separator means a gas stream containing the solid materials; said separator means containing a filter drum provided with a stationary, substantially cylindrical and gas-pervious filter jacket; an approximately axially arranged rotating hollow shaft containing a hollow space and disposed within said filter drum; drive means operatively connected to said hollow shaft for driving said hollow shaft; at least one suction nozzle rigidly connected for rotation to said hollow shaft; a suction device for sucking-off through said suction nozzle and the hollow space of said hollow shaft the solid materials deposited at an inner surface of said filter jacket; at least one slide means rigidly connected for rotation in radial direction to said hollow shaft but displaceable in the axial direction of said hollow shaft; said at least one suction nozzle being operatively connected with said slide means; means rigidly connected for rotation to said hollow shaft for converting the driven movements of said hollow shaft generated by said drive means into axial oscillating movements of said slide means which revolves with said hollow shaft; said at least one suction nozzle being guided by said slide means along a substantially wave-like path over the inner surface of said filter jacket; and a flexible conduit connecting said at least one suction nozzle with said hollow space of said hollow shaft.
Claim 2
Dependent Claim
251 words
A filter assembly for the removal of solid materials from a gas stream, especially from an air stream during textile processing comprising: a separator means; means for delivering to the interior of said separator means a gas stream containing the solid materials; said separator means containing a filter drum provided with a stationary, substantially cylindrical and gas-pervious filter jacket; an approximately axially arranged rotating hollow shaft containing a hollow space and disposed within said filter drum; drive means operatively connected to said hollow shaft for driving said hollow shaft; at least one suction nozzle rigidly connected for rotation to said hollow shaft; a suction device for sucking-off through said suction nozzle and the hollow space of said hollow shaft the solid materials deposited at an inner surface of said filter jacket; at least one slide means rigidly connected for rotation in radial direction to said hollow shaft but displaceable in the axial direction of said hollow shaft; said at least one suction nozzle being operatively connected with said slide means; means rigidly connected for rotation to said hollow shaft for converting the driven movements of said hollow shaft generated by said drive means into axial oscillating movements of said slide means which revolves with said hollow shaft; said at least one suction nozzle being guided by said slide means along a substantially wave-like path over the inner surface of said filter jacket; and a flexible conduit connecting said at least one suction nozzle with said hollow space of said hollow shaft.
Claim 3
Dependent Claim
60 words
The filter assembly as defined in claim 1, further including: a rail for guiding said slide means; said rail being connected for movement to said hollow shaft; and said rail serving for coupling said slide means with said hollow shaft such that said slide means is displaceable in axial direction but connected for rotation practically rigidly to said hollow shaft.
Claim 4
Dependent Claim
35 words
The filter assembly as defined in claim 1, wherein: at least a portion of said hollow shaft which extends through said filter drum being arranged practically horizontally and coaxially with respect to said filter drum.
Claim 5
Dependent Claim
46 words
The filter assembly as defined in claim 1, wherein: said hollow shaft being guided through a stationary substantially circular end plate of said separator; and said hollow shaft being connected externally of said filter drum to said drive means which is secured to said end plate.
Claim 6
Dependent Claim
82 words
The filter assembly as defined in claim 1, further including: a pre-separator cooperating with said separator means; said pre-separator comprising a substantially circular filter disc and a stationary suction device essentially covering a work radius of said filter disc at a gas flow infeed side of a front face of said filter disc; said filter disc covering a front circular area of the filter drum of said separator means; and said filter disc being connected for movement to said driven hollow shaft.
Claim 7
Dependent Claim
83 words
The filter assembly as defined in claim 1 or 5, wherein: said means for converting the driven movements of said hollow shaft into axial oscillating movements of said slide means comprising cross-spindle means; two holding elements for rotatably mounting said cross-spindle means; said two holding elements being arranged in spaced relationship from one another and secured to said hollow shaft; a guide with which said slide means is rigidly connected; and said guide being mounted to be axially movable upon said cross-spindle means.
Claim 8
Dependent Claim
65 words
The filter assembly as defined in claim 6, further including: means defining a rolling stationary contact surface; a coupling; said cross-spindle means having one end region thereof in engagement with said stationary rolling contact surface by means of said coupling whereby the movement of said driven hollow shaft in relation to said stationary filter drum is converted into a rotary movement of said cross-spindle means.
Claim 9
Dependent Claim
57 words
The filter assembly as defined in claim 5, further including: a suction blower to which there is connected said suction device of said pre-separator; and said gas stream delivering means including a suction blower; and said suction blower of the pre-separator being controllable independently of the suction blower for delivering the gas stream through said separator means.
Claim 10
Dependent Claim
49 words
The filter assembly as defined in claim 5, wherein: said filter disc being constructed to possess a substantially flat configuration; and said suction device of said pre-separator possessing at least one slot nozzle means acting upon the gas flow infeed side of the front face of said filter disc.
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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |