US3554376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange apparatus for treating liquids
Assignee: GHH MAN ANLAGEN
•
Filing: 1968-02-16
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Granted: 1971-01-12
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Expires: 1988-02-16
Abstract
Abstract In an ion exchange apparatus such as for the softening or desalting of water, the active column and the combined regenerating and washing columns are interconnected by pipe systems including counterpressure chambers so that spent ion exchange material is recycled from the active column through the regenerating and washing columns and back to the active column with a balanced rate of flow.
Inventors
- 👤 Gerhard Kunz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:45
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
Apparatus as in claim 1 in which at least one of the columns is provided with intermediate bottoms which are permeable to water, overflow pipes fitted to said intermediate bottoms to permit the passage of ion exchange resin, said intermediate bottoms dividing the column into several chambers, and said overflow pipes of each intermediate bottom extending from a point close to the bottom above to a point close to the bottom below.
Claim 2
Dependent Claim
35 words
Apparatus as in claim 1 in which the opening area of the drain pipe entering the associated back-pressure chamber of the active column and the washing column is adjustable by means of a plate valve.
Claim 3
Dependent Claim
24 words
Apparatus as in claim 1 in which pipe enters the back-pressure chamber of The active column or the washing column in a tangential direction.
Claim 4
Dependent Claim
29 words
Apparatus as in claim 1 in which said annular chamber surrounds the washing column, and in which an annular nozzle is mounted through which the washing water is emitted.
Claim 5
Dependent Claim
92 words
Apparatus as in claim 1 in which said transfer pipe for the regenerated and washed ion exchange resin projects into said active column with a length of about five percent of the height of the active column, and in which said transfer pipe for spent ion exchange resin projects into said regenerating column with a length of about five percent of the height of said regenerating column, and in which said drainage line projects into said active column with a length of about 2.5 percent of the height of said active column.
Claim 6
Dependent Claim
60 words
Apparatus as in claim 1 in which an overflow vessel with overflow pipe and a pump are connected between said drain pipe and said pipe entering into the back-pressure chamber of the active column, and in which a pump is interconnected between the pipes entering said washing column and its associated back-pressure chamber, respectively, and the common clear water line.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |