GB1497866A - Microscreening method and apparatus - Google Patents
Microscreening method and apparatusInfo
- Publication number
- GB1497866A GB1497866A GB55930/74A GB5593074A GB1497866A GB 1497866 A GB1497866 A GB 1497866A GB 55930/74 A GB55930/74 A GB 55930/74A GB 5593074 A GB5593074 A GB 5593074A GB 1497866 A GB1497866 A GB 1497866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- box
- pressure
- space
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
- B01D33/807—Accessories integrally combined with devices for controlling the filtration by level measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/20—Pressure-related systems for filters
- B01D2201/202—Systems for applying pressure to filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/20—Pressure-related systems for filters
- B01D2201/204—Systems for applying vacuum to filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/28—Position of the filtering element
- B01D2201/282—Filtering elements with a horizontal rotation or symmetry axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Separation Of Particles Using Liquids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
1497866 Rotary drum filters WATER POLLUTION CONTROL CORP 27 Dec 1974 [26 Dec 1973] 55930/74 Heading B1D In a method of microscreening a suspension to be screened is fed to the interior of a rotary drum so that a pool of suspension and a gas space thereabove are formed inside the drum, separated solids are removed from the drum's inner surface at a point above the pool by a back-flushing liquid spray into a collecting means within the drum and a positive pressure differential is maintained between the gas space and the space outside the drum during at least part of the method by applying positive pressure to the gasspace or suction to the space outside the drum. The pressure of the backflushing spray and the pressure differential may be varied during the process. In Fig. 11 drum 153 is rotating in filtrate-receiving tank 141 and receiving liquid from box 152, separated solids being removed from the drum by liquid spray from nozzles 165 into trough 157. The blower 190 is operating all the time. When the level of pool 154 is below the uppermost point of inlet 151 the. air from blower 190 is vented to atmosphere via inlet 151 and -box 152. When the level of the pool rises so that inlet 151 is filled, the air from blower 190 maintains a positive gas differential between space 173 and the space immediately outside the drum. If the liquid in box 152 rises to float 177a the pressure of the spray from nozzles 165 is increased; the spray pressure returns to its former value if the liquid in box 152 falls below float 175a. In Fig. 15 the apparatus is provided with a box 210 and trough 257a so that the pressures P 4 and P 3 may be maintained differently from pressure P 2 of the gas space. (P 4 # P 3 ). The drum may be mounted in a closed tank (e.g. Fig. 8, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42760073A | 1973-12-26 | 1973-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1497866A true GB1497866A (en) | 1978-01-12 |
Family
ID=23695535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB55930/74A Expired GB1497866A (en) | 1973-12-26 | 1974-12-27 | Microscreening method and apparatus |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5820291B2 (en) |
CA (1) | CA1060351A (en) |
DE (1) | DE2461663C3 (en) |
FR (1) | FR2255936B1 (en) |
GB (1) | GB1497866A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011032583A1 (en) * | 2009-09-16 | 2011-03-24 | Skjølstrup & Grønborg Aps | Water screening |
US10058806B2 (en) * | 2013-11-07 | 2018-08-28 | Miura Co., Ltd. | Ballast water treatment device |
US10464821B2 (en) | 2014-05-21 | 2019-11-05 | B.V. Scheepswerf Damen Gorinchem | System and method for cleaning and sterilizing a water flow |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES479119A1 (en) * | 1978-04-07 | 1979-11-16 | Kloeckner Humboldt Deutz Ag | Method for vacuum filtration |
JPS5558213U (en) * | 1978-10-14 | 1980-04-19 | ||
DE3120891A1 (en) * | 1981-05-26 | 1982-12-23 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | METHOD FOR REMOVAL OR PARTIAL REMOVAL OF INTERESTING SUBSTANCES CONTAINED IN A FLOWING WATER, AND DEVICE FOR IMPLEMENTING THE METHOD |
DE3629961A1 (en) * | 1986-09-03 | 1988-03-17 | Bott Reinhard | Apparatus for filtering out or screening solid particles from a liquid |
JPH08512237A (en) * | 1993-07-06 | 1996-12-24 | ノルディック ウォーター プロダクツ アクチボラゲット | Device for filtering liquid containing particles |
CN108889595B (en) * | 2018-07-02 | 2021-07-09 | 滨州学院 | Civil engineering construction is handled with waste material and is used cement separator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1080523B (en) * | 1958-04-15 | 1960-04-28 | Passavant Werke | Drum sieve machine for water purification |
DE1254595B (en) * | 1965-11-05 | 1967-11-23 | Krauss Maffei Imp G M B H | Cellless cylindrical rotating internal filter |
SE315490B (en) * | 1968-04-03 | 1969-09-29 | H Nilsson | |
FR2079452A5 (en) * | 1970-02-02 | 1971-11-12 | Beaudrey & Cie |
-
1974
- 1974-12-24 CA CA216,811A patent/CA1060351A/en not_active Expired
- 1974-12-26 JP JP751954A patent/JPS5820291B2/en not_active Expired
- 1974-12-26 FR FR7442932A patent/FR2255936B1/fr not_active Expired
- 1974-12-27 DE DE2461663A patent/DE2461663C3/en not_active Expired
- 1974-12-27 GB GB55930/74A patent/GB1497866A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011032583A1 (en) * | 2009-09-16 | 2011-03-24 | Skjølstrup & Grønborg Aps | Water screening |
US10058806B2 (en) * | 2013-11-07 | 2018-08-28 | Miura Co., Ltd. | Ballast water treatment device |
US10464821B2 (en) | 2014-05-21 | 2019-11-05 | B.V. Scheepswerf Damen Gorinchem | System and method for cleaning and sterilizing a water flow |
Also Published As
Publication number | Publication date |
---|---|
DE2461663A1 (en) | 1975-07-10 |
JPS50106280A (en) | 1975-08-21 |
DE2461663C3 (en) | 1982-01-14 |
FR2255936B1 (en) | 1982-04-02 |
JPS5820291B2 (en) | 1983-04-22 |
FR2255936A1 (en) | 1975-07-25 |
CA1060351A (en) | 1979-08-14 |
DE2461663B2 (en) | 1980-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |