GB729436A - Improvements in filter bed agitation - Google Patents
Improvements in filter bed agitationInfo
- Publication number
- GB729436A GB729436A GB27781/51A GB2778151A GB729436A GB 729436 A GB729436 A GB 729436A GB 27781/51 A GB27781/51 A GB 27781/51A GB 2778151 A GB2778151 A GB 2778151A GB 729436 A GB729436 A GB 729436A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- pipes
- tank
- valve
- tube
- 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
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
- B01D24/205—Downward filtration without specifications about the filter material supporting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4605—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer
- B01D24/4621—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer by nozzles acting on the cake side of the filter material, or by fluids acting in co-current direction with the feed stream
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
729,436. Gravity-sand filters. MOORE, R. P. Nov. 27, 1951 [Dec. 8, 1950 ; May 5, 1951; July 12, 1951], No. 27781/51. Class 46. [Also in Group XXIX] In apparatus for agitating a filter bed prior to or during backflushing, comprising a wheeled tubular structure carrying jet-forming devices 11, fig. 1, 1a a hydraulic cylinder 18 fixed within a channel member 17 attached to the main tube 1, and a stationary piston 19, Fig. 4, within the cylinder 18 rigid with piston rods 24 which guide the cylinder and are attached as by brackets 28, 29 to the filter tank 2, water under pressure is led alternately to the two sides of the piston 19 to move the cylinder 18 and structure to and fro, a valve 32 controlling the supply of water being actuated at the end of each traverse to reverse the direction of travel. The main tube 1 which is transverse. to the tank carries wheels at its flanged ends which run on paths or tracks at the sides of the tank 2. Water supplied to the tube 1 by means of a flexible hose attached at one end to the tank 2, passes through a central tube 6 and longitudinal pipes 8 to a pair of transverse pipes 10 carrying the jet-forming devices 11 which are directed vertically downwards. The four-way valve 32 is connected to each end of the cylinder 18 by pipes 33, 34, to the main pipe 1, and to a discharge pipe 36, the latter having a pre-set valve therein to regulate the rate of discharge of water and thus the speed of the carriage or structure. At the end of each traverse one end or the other of a movable trip rod 45, which is slidable in guides 46 carried by brackets 38, 38a, contacts a stop plate 47 fixed to the end wall of the tank 2 or the upper end of bracket 29. One of a pair of truncated conical members 51 secured to rod 45 thereupon moves a bell-crank lever 52, Fig. 5, about its axis 53 against the action of a spring 55 to release a roller 62 carried by a bolt 63 on lever 52 from an arcuate recess 61 in a trip plate 43. The trip-plate 43 is thus released for rotation by a lever 60 under the action of one of a pair of tension springs 69 connected at their inner ends by chains 70 to the lever 60 and at their outer ends by collars 71 on the trip rod 45. The trip plate 43, which is limited in its rotation by an arcuate recess 64 and co-operating pin 66, is attached to the stem 55 of the plug of valve 32 and the consequent rotation of the latter reverses the connections to the cylinder 18 and hence its direction of travel. A leak port and discharge pipe 41 are provided for each end of the cylinder 18, and an air inlet non-return valve 42 is fitted in each inlet pipe 33, 34 to permit automatic drainage of the cylinder 18 and pipes 33, 34 when not operating. In the modification shown in Fig. 9, the structure is of box formation having two main transverse tubular members 72 running on wheels 75, a pair of vertical feed pipes 76 depending from each member 72 and supporting, and feeding water to, longitudinal pipes 78 which latter are rigid with distributing pipes 81. A third and central distributing pipe 84 is also provided. The channel member 90 is connected by brackets 89 to the tubes 72. The main tubes 72 and the supporting structure is moved to and fro in the same manner as tube 1 of the first embodiment.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA729436X | 1950-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB729436A true GB729436A (en) | 1955-05-04 |
Family
ID=25565799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27781/51A Expired GB729436A (en) | 1950-12-08 | 1951-11-27 | Improvements in filter bed agitation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB729436A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2152021A (en) * | 1983-11-11 | 1985-07-31 | Projekt Wasserwirtschaft Veb | Biological treatment of effluent |
CN112759135A (en) * | 2021-01-04 | 2021-05-07 | 济南市第三人民医院 | Hospital clinical laboratory uses waste liquid treatment device |
CN114590894A (en) * | 2020-12-07 | 2022-06-07 | 中国石油化工股份有限公司 | Biological aerated filter reactor and treatment method |
-
1951
- 1951-11-27 GB GB27781/51A patent/GB729436A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2152021A (en) * | 1983-11-11 | 1985-07-31 | Projekt Wasserwirtschaft Veb | Biological treatment of effluent |
CN114590894A (en) * | 2020-12-07 | 2022-06-07 | 中国石油化工股份有限公司 | Biological aerated filter reactor and treatment method |
CN112759135A (en) * | 2021-01-04 | 2021-05-07 | 济南市第三人民医院 | Hospital clinical laboratory uses waste liquid treatment device |
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