US3837150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus with pneumatic intermittent cleaning
Assignee: Torit Corp
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Filing: 1972-12-08
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Granted: 1974-09-24
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Expires: 1992-12-08
Abstract
Abstract A filtering apparatus employing pneumatic intermittent cleaning in which tubular filter elements are positioned within a tubular enclosure to filter contaminated airflow therethrough. A plurality of nozzles connected to a common manifold are positioned in the tube house adjacent the upper ends of the downstream sides of the filter elements with one nozzle providing a cleaning and agitating action for a plurality of filtering elements. The nozzles are asymmetrically located with respect to the individual filtering elements to provide an efficient shaking of the same to dislodge agglomerated particulate caked on the interior of the filtering elements. The improved apparatus provides for a limited air supply with a predetermined pressure and volume for effective cleaning of the filtering elements to provide for efficient operation of the filtering apparatus and low cost of maintenance of the same.
Inventors
- 👤 J Kubiak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/66; B01D46/70; B01D46/71
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
396 words
A filtering apparatus comprising, an enclosure having a pair of spaced dividing baffles positioned therein in a parallel relationship and dividing said enclosure into upper, lower and intermediate sections with respect to said enclosure, each baffle having a plurality of openings therein with a transversely extending collar surrounding the apertures and projecting between the baffles of the enclosure, a plurality of tubular filter elements open at both extremities positioned in the intermediate section of the enclosure with the extremities of the same mounted over the transversely extending collars and secured thereto with the tubular elements extending between the baffles in spaced parallel relationship, an inlet air passage positioned in the enclosure in the upper section thereof and communicating with the upper section means for moving air through said enclosure, an air outlet passage positioned in the enclosure and communicating with the intermediate section of the enclosure being connected to the means for moving air through the enclosure from the upper section and the tubular elements to the intermediate section and the outlet therein, a contaminant withdrawal port positioned in the enclosure in the lower portion thereof and common to the lower section of the enclosure, a cleaning manifold positioned in the enclosure in the intermediate section and having a plurality of discharge nozzles positioned along the extent of the same and adjacent the baffle common to the upper section with the nozzles being directed downwardly toward the lower section of the enclosure and along the extent of the tubular elements and between adjacent tubular elements, each of said nozzles having the same internal dimension and being positioned equidistantly between four adjacent tubular filter elements in a manner such that any one of said tubular elements has only one nozzle adjacent the same, a stored air supply having a predetermined pressure and volume connected to said manifold to feed all of said nozzles simultaneously, and control means for connecting the stored air supply to the nozzles upon cessation of operation of the means for moving air through the enclosure, said air supply being adapted to provide a jet burst from said nozzles along the extent of the tubular elements to dislodge contaminants on the inner surface of the same permitting gravity discharge of said contaminants through the tubular elements and into the lower section of the enclosure while providing for a reverse airflow through the filter elements.
Claim 2
Dependent Claim
396 words
A filtering apparatus comprising, an enclosure having a pair of spaced dividing baffles positioned therein in a parallel relationship and dividing said enclosure into upper, lower and intermediate sections with respect to said enclosure, each baffle having a plurality of openings therein with a transversely extending collar surrounding the apertures and projecting between the baffles of the enclosure, a plurality of tubular filter elements open at both extremities positioned in the intermediate section of the enclosure with the extremities of the same mounted over the transversely extending collars and secured thereto with the tubular elements extending between the baffles in spaced parallel relationship, an inlet air passage positioned in the enclosure in the upper section thereof and communicating with the upper section means for moving air through said enclosure, an air outlet passage positioned in the enclosure and communicating with the intermediate section of the enclosure being connected to the means for moving air through the enclosure from the upper section and the tubular elements to the intermediate section and the outlet therein, a contaminant withdrawal port positioned in the enclosure in the lower portion thereof and common to the lower section of the enclosure, a cleaning manifold positioned in the enclosure in the intermediate section and having a plurality of discharge nozzles positioned along the extent of the same and adjacent the baffle common to the upper section with the nozzles being directed downwardly toward the lower section of the enclosure and along the extent of the tubular elements and between adjacent tubular elements, each of said nozzles having the same internal dimension and being positioned equidistantly between four adjacent tubular filter elements in a manner such that any one of said tubular elements has only one nozzle adjacent the same, a stored air supply having a predetermined pressure and volume connected to said manifold to feed all of said nozzles simultaneously, and control means for connecting the stored air supply to the nozzles upon cessation of operation of the means for moving air through the enclosure, said air supply being adapted to provide a jet burst from said nozzles along the extent of the tubular elements to dislodge contaminants on the inner surface of the same permitting gravity discharge of said contaminants through the tubular elements and into the lower section of the enclosure while providing for a reverse airflow through the filter elements.
Claim 3
Dependent Claim
30 words
The filtering apparatus of claim 1 in which the control means for connecting the stored air supply to the nozzles after cessation of the operating means includes a timer means.
Claim 4
Dependent Claim
35 words
The filtering apparatus of claim 2 in which the stored air supply includes a pump and pressure tank with a valve means connecting the pressure tank to the manifold and operated by said timer means.
Claim 5
Dependent Claim
32 words
The filtering apparatus of claim 3 in which the pressure tank includes a pressure responsive means operative to energize The pump whenever the pressure in the tank drops below a predetermined pressure.
Claim 6
Dependent Claim
350 words
A filtering apparatus comprising, a tube house enclosure having an inlet section and an exhaust section, a pair of spaced baffles positioned in the tube house enclosure and defining with the enclosure said sections, a plurality of tubular filter elements positioned between the baffles and connected in spaced parallel relationship being in flow communication to one of said sections through openings in one of said baffles said tubular filtering elements coupling the inlet section and the exhaust section, means connected to the exhaust section for moving contaminated gas through the inlet section and tubular filtering elements to be exhausted at the exhaust section with the contaminants being collected on the inner surface of the tubular elements, a clean out section defined by said enclosure and one of said baffles with said baffles having openings therin to which said filter elements are attached and located lower most in said enclosure to receive contaminants from the inner surface of the tubular elements through deposit by force of gravity, cleaning apparatus including a pipe type manifold with discharge nozzles connected thereto and positioned in the exhaust section, said discharge nozzles being spaced equidistantly between four adjacent tubular filtering elements in a manner such that any one of said tubular elements has only one nozzle adjacent the same with said nozzles having the same internal diameter to provide the same volume of jet airflow therefrom, a fixed source of air under a predetermined pressure and having a predetermined volume connected to the pipe manifold to provide a single air jet discharge from said nozzles along the extent of the tubular elements in the exhaust section and in a direction along the extent of the tubular elements, said air discharge moving the filter elements along their extent and providing a reverse airflow from the exhaust section to the interior of the tubular elements to dislodge contaminants thereon, and means controlling the discharge of said air source to said cleaning apparatus and responsive to a cessation of operation of the means moving air from the inlet section through the tubular filter elements to the exhaust section.
Claim 7
Dependent Claim
350 words
A filtering apparatus comprising, a tube house enclosure having an inlet section and an exhaust section, a pair of spaced baffles positioned in the tube house enclosure and defining with the enclosure said sections, a plurality of tubular filter elements positioned between the baffles and connected in spaced parallel relationship being in flow communication to one of said sections through openings in one of said baffles said tubular filtering elements coupling the inlet section and the exhaust section, means connected to the exhaust section for moving contaminated gas through the inlet section and tubular filtering elements to be exhausted at the exhaust section with the contaminants being collected on the inner surface of the tubular elements, a clean out section defined by said enclosure and one of said baffles with said baffles having openings therin to which said filter elements are attached and located lower most in said enclosure to receive contaminants from the inner surface of the tubular elements through deposit by force of gravity, cleaning apparatus including a pipe type manifold with discharge nozzles connected thereto and positioned in the exhaust section, said discharge nozzles being spaced equidistantly between four adjacent tubular filtering elements in a manner such that any one of said tubular elements has only one nozzle adjacent the same with said nozzles having the same internal diameter to provide the same volume of jet airflow therefrom, a fixed source of air under a predetermined pressure and having a predetermined volume connected to the pipe manifold to provide a single air jet discharge from said nozzles along the extent of the tubular elements in the exhaust section and in a direction along the extent of the tubular elements, said air discharge moving the filter elements along their extent and providing a reverse airflow from the exhaust section to the interior of the tubular elements to dislodge contaminants thereon, and means controlling the discharge of said air source to said cleaning apparatus and responsive to a cessation of operation of the means moving air from the inlet section through the tubular filter elements to the exhaust section.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |