US3464558A - Strainer - Google Patents

Strainer Download PDF

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Publication number
US3464558A
US3464558A US644633A US3464558DA US3464558A US 3464558 A US3464558 A US 3464558A US 644633 A US644633 A US 644633A US 3464558D A US3464558D A US 3464558DA US 3464558 A US3464558 A US 3464558A
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US
United States
Prior art keywords
bars
grating
strainer
shaft
frame
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 - Lifetime
Application number
US644633A
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English (en)
Inventor
Adolf Harvanek
Vaclav Chalupnik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHEPOS Z CHEMICKEHO A POTRAVIN
CHEPOS ZAVODY CHEMICKEHO A POTRAVINARSKEHO STROJIRENSTVI OBOROVY PODNIK
Original Assignee
CHEPOS Z CHEMICKEHO A POTRAVIN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHEPOS Z CHEMICKEHO A POTRAVIN filed Critical CHEPOS Z CHEMICKEHO A POTRAVIN
Application granted granted Critical
Publication of US3464558A publication Critical patent/US3464558A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • B07B13/05—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size using material mover cooperating with retainer, deflector or discharger
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
    • E02B8/023—Arresting devices for waterborne materials
    • E02B8/026—Cleaning devices

Definitions

  • a strainer for removing floating debris from water running in a channel including a grating of inclined bars whose top ends are arcuately bent to form a downwardly concave bight of the grating, the grating having a frame mounted on a driven shaft centered in the bight and supported on the channel banks.
  • Chains trained over sprockets on the driven shaft and on an idler shaft near the bottom end of the grating carry rakes whose teeth project through the gaps between the grating bars while the teeth move upward between the sprockets and about the drive shaft.
  • This invention relates to strainers and more particularly to the strainers suitable for removing floating debris from water in the supply channel of a water wheel or turbine.
  • the invention is concerned with the cleaning of the water supply for saw mills and paper mills which draw water for their power requirements from rivers on which logs are floated to the mill.
  • Such rivers usually carry relatively large amounts of debris which tend to clog conventional strainers.
  • An object of the invention is the provision of a selfcleaning strainer which also permits the recovery of the floating debris.
  • the strainer of the invention has a frame and a plurality of elongated bars mounted on the frame in substantially parallel relationship and defining elongated gaps therebetween.
  • Each bar has a substantially straight portion and an arcuate terminal portion.
  • the bars jointly constitute a grating, and the terminal portions constitute a bight portion of the grating.
  • Two sprockets are rotatably mounted on the frame, one of the sprockets being arranged in the bight portion of the grating and spaced from the other sprocket longitudinally of the grating bars.
  • the two strands of a continuous chain trained over the sprockets are respectively remote from and near the bars.
  • One of the sprockets is driven in a direction to move the near stand toward the sprocket in the grating bight.
  • Teeth are arranged on the chain in several groups and are spacedly aligned in each group transversely of the direction of chain movement. While moving on the near strand of the chain, and while moving about the sprocket in the grating bight, the teeth engage the gaps between grating bars and project beyound the grating so as to sweep accumulated debris from the grating and over the bight portion.
  • the sprocket in the bight portion of the grating is fixedly mounted on a drive shaft rotatably secured to the grating frame and supported in two bearings on the banks of the channel while the straight bar portions are immersed in the channel.
  • the debris brought up over the bight portion is thus readily collected and removed.
  • FIG. 1 shows a strainer of the invention in side elevational section on the line II in FIG. 2;
  • FIG. 2 shows the strainer of FIG. 1 in plan view.
  • Brackets 6 are attached to a U-shaped frame 7 which is obliquely inclined in the channel 1. Brackets 8 on the bottom end of the frame 7 rotatably support a shaft 9 on which two sprockets 10 are axially spaced. Two link chains 11 are trained over the sprockets 5, 10
  • the teeth 13 of the rakes are elongated transversely of the direction of chain movement and slope obliquely backward from the chain relative to that direction.
  • the guide rollers 14 have axially spaced circumferential ribs and are rotatably mounted between the chains 11 closely adjacent respective rakes and behind the associated rakes relative to the direction of chain movement.
  • the ribs of the rollers 14 are aligned with the teeth 13 of the associated rakes 12, as is best seen in FIG. 2, and each rib and the aligned tooth 13 engage a gap between spaced, flat bars 15 which are mounted on the bottom of the frame 7 to form a grating.
  • the terminal top portions of the grating bars 15 are bent in a circular arc approximately about the axis of the shaft 4 so that the shaft is centered in the bight of the grating formed by the terminal bar portions.
  • the free ends of the bars 15 are arranged above a trough 16 which extends across the channel 1 from bank to bank.
  • the lower ends of the bars 15 and of the frame 7 are supported on a bar 20 of L-shaped cross section fixedly arranged at the bottom of the channel 1, and are protected by approximately triangular reinforcements 17 against damage by rocks and similar heavy objects rolling along the channel bottom under the pressure of the flowing water.
  • Hooks 18 on the lower end of the frame 7 are attached to a chain 19, only partly shown in the drawing, and connected to a winch above the channel so that the strainer may be lifted from the channel for inspection or repair by pivoting it on the shaft 4.
  • the bars 15 are of rectangular cross section and present their narrow faces to the flowing water. They can be defiected transversely by pieces of debris wedging in a gap between adjacent bars. The resulting narrowing of the adjacent gaps would cause the teeth 13 of a rake 12 to be caught, whereby the strainer could be severely damaged.
  • the guide rollers 14 prevent undue deflection of the bars 15. Their sturdy ribs which penetrate into the gaps between the bars 15 tend to dislodge particles of debris. Moreover, they force the bars 15 apart into their proper positions so that even heavy wood particles are crushed between adjacent bars, and damage to the rakes 12 is safely avoided.
  • the rollers 14 are rotated by frictional engagement with the frame 7 while they travel on the near strand of the chains 11.
  • the chains 11 and sprockets 5, 10 are located behind the grating bars 15 in the direction of water flow and are thereby protected against fouling by floating debris.
  • the debris is drained of most adhering water while moving over the bars 15 above the water level in the channel 1. It can be burned under boilers after a short drying period. In heavily contaminated waters, a belt conveyor has been found convenient for removing the collected debris from the trough 16.
  • a strainer comprising, in combination:
  • each bar having a substantially straight portion and an arcuate terminal portion
  • said chain having two strands extending longitudinally of said bars and being respectively near said bars and remote from said bars;
  • each roller being mounted on said chain for rotation about an axis transverse of the direction of chain movement, said roller being formed with a plurality of axially spaced circumferential ribs, an axial portion of said roller frictionally engaging said frame during movement of the roller on said near strand for rotation of the roller, and said ribs thereof respectively engaging said gaps for maintaining the spacing of said bars.
  • said drive means include a shaft, said one sprocket being fixedly mounted on said shaft, said shaft being rotatably secured to said frame, the strainer further comprising bearing means for supporting the two axial ends of said shaft on the banks of a channel while said straight portions of said bars are immersed in said channel, and said bight portion is located above said shaft.
  • each guide roller is mounted on said chain closely adjacent an associated group of said teeth and behind the associated group in the direction of chain movement, said teeth being elongated obliquely backward relative to said direction and away from said chain.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Filtration Of Liquid (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
US644633A 1966-06-23 1967-06-08 Strainer Expired - Lifetime US3464558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS419466 1966-06-23

Publications (1)

Publication Number Publication Date
US3464558A true US3464558A (en) 1969-09-02

Family

ID=5384123

Family Applications (1)

Application Number Title Priority Date Filing Date
US644633A Expired - Lifetime US3464558A (en) 1966-06-23 1967-06-08 Strainer

Country Status (4)

Country Link
US (1) US3464558A (de)
CH (1) CH474629A (de)
DE (1) DE1634031C3 (de)
GB (1) GB1118955A (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975275A (en) * 1974-10-17 1976-08-17 Shogo Kato Conveyer for removing floating objects
JPS51141929U (de) * 1975-05-08 1976-11-15
JPS52154938U (de) * 1976-05-20 1977-11-24
JPS548837U (de) * 1977-06-21 1979-01-20
JPS5426039A (en) * 1977-07-28 1979-02-27 Passavant Werke Cleaner for bar screen of water treating equipment
US4229301A (en) * 1977-06-23 1980-10-21 Hawker Siddeley Bracket Limited Mechanically raked bar screen
DE3910464A1 (de) * 1989-03-31 1990-10-04 E & M Maschbau Gmbh Abscheidevorrichtung, insbesondere fuer klaeranlagen
US4969992A (en) * 1986-06-17 1990-11-13 Outokumpu Oy Separating conveyor
US5019253A (en) * 1985-01-24 1991-05-28 Micharel Richard Byers Apparatus for collecting and discharging waste material
EP0480075A1 (de) * 1990-09-10 1992-04-15 Bormet, Horst Fördersiebrechen
DE4035175A1 (de) * 1990-11-06 1992-05-07 Meurer Gerd Gmbh Vorrichtung zum sammeln und abgeben von feststoffen aus stroemendem wasser
US5730862A (en) * 1994-10-17 1998-03-24 Mahr; Gernot Bar screen with rotating rakes
RU2451137C1 (ru) * 2010-10-11 2012-05-20 Общество с ограниченной ответственностью Научно-производственная фирма "Висма" Устройство для механической очистки сточных вод
US20140202659A1 (en) * 2013-01-23 2014-07-24 Mayekawa Mfg. Co., Ltd. Poultry carcass cooling and conveying system
RU193255U1 (ru) * 2018-07-30 2019-10-21 Юрий Петрович Борисов Устройство для механической очистки сточных вод
US20200392698A1 (en) * 2019-06-12 2020-12-17 Sea To Sky Energy Solutions Corp. Material transfer system for a body of water
CN112893126A (zh) * 2020-12-25 2021-06-04 安徽致磨新材料科技有限公司 一种微晶耐磨氧化锆球的制备方法
CN113694588A (zh) * 2021-08-09 2021-11-26 中国核电工程有限公司 一种核电站取水系统粗过滤装置
US20220023779A1 (en) * 2020-07-23 2022-01-27 Parkson Corporation Bar screen filter apparatus and method
CN115041431A (zh) * 2022-05-24 2022-09-13 马鞍山钢铁股份有限公司 物料连续输送中的杂物清理机器人及其控制方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2360717A2 (fr) * 1976-08-06 1978-03-03 Eau Gaz Assain Grille avec dispositif degrilleur
DE29709859U1 (de) * 1997-06-06 1997-10-23 Sperl, Helmut, 48341 Altenberge Reinigungsanordnung für die Abwasserkanalisation
CN111842101B (zh) * 2020-08-11 2021-04-06 天长市天建建筑工程有限责任公司 一种建筑施工的筛沙设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1435770A (en) * 1922-11-14 welser
CA508424A (en) * 1954-12-21 K. Breda Thoralf Trash rakes
US2823802A (en) * 1955-08-15 1958-02-18 Massey Hubert Machine for removing moss from water flowing in an irrigation ditch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1435770A (en) * 1922-11-14 welser
CA508424A (en) * 1954-12-21 K. Breda Thoralf Trash rakes
US2823802A (en) * 1955-08-15 1958-02-18 Massey Hubert Machine for removing moss from water flowing in an irrigation ditch

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975275A (en) * 1974-10-17 1976-08-17 Shogo Kato Conveyer for removing floating objects
JPS51141929U (de) * 1975-05-08 1976-11-15
JPS5510433Y2 (de) * 1975-05-08 1980-03-07
JPS52154938U (de) * 1976-05-20 1977-11-24
JPS548837U (de) * 1977-06-21 1979-01-20
US4229301A (en) * 1977-06-23 1980-10-21 Hawker Siddeley Bracket Limited Mechanically raked bar screen
JPS5426039A (en) * 1977-07-28 1979-02-27 Passavant Werke Cleaner for bar screen of water treating equipment
JPS575927B2 (de) * 1977-07-28 1982-02-02
US5019253A (en) * 1985-01-24 1991-05-28 Micharel Richard Byers Apparatus for collecting and discharging waste material
US4969992A (en) * 1986-06-17 1990-11-13 Outokumpu Oy Separating conveyor
DE3910464A1 (de) * 1989-03-31 1990-10-04 E & M Maschbau Gmbh Abscheidevorrichtung, insbesondere fuer klaeranlagen
EP0480075A1 (de) * 1990-09-10 1992-04-15 Bormet, Horst Fördersiebrechen
DE4035175A1 (de) * 1990-11-06 1992-05-07 Meurer Gerd Gmbh Vorrichtung zum sammeln und abgeben von feststoffen aus stroemendem wasser
US5730862A (en) * 1994-10-17 1998-03-24 Mahr; Gernot Bar screen with rotating rakes
RU2451137C1 (ru) * 2010-10-11 2012-05-20 Общество с ограниченной ответственностью Научно-производственная фирма "Висма" Устройство для механической очистки сточных вод
US20140202659A1 (en) * 2013-01-23 2014-07-24 Mayekawa Mfg. Co., Ltd. Poultry carcass cooling and conveying system
US10010085B2 (en) * 2013-01-23 2018-07-03 Mayekawa Mfg. Co., Ltd. Poultry carcass cooling and conveying system
RU193255U1 (ru) * 2018-07-30 2019-10-21 Юрий Петрович Борисов Устройство для механической очистки сточных вод
US20200392698A1 (en) * 2019-06-12 2020-12-17 Sea To Sky Energy Solutions Corp. Material transfer system for a body of water
US20220023779A1 (en) * 2020-07-23 2022-01-27 Parkson Corporation Bar screen filter apparatus and method
US11633680B2 (en) * 2020-07-23 2023-04-25 Parkson Corporation Bar screen filter apparatus and method
CN112893126A (zh) * 2020-12-25 2021-06-04 安徽致磨新材料科技有限公司 一种微晶耐磨氧化锆球的制备方法
CN113694588A (zh) * 2021-08-09 2021-11-26 中国核电工程有限公司 一种核电站取水系统粗过滤装置
CN115041431A (zh) * 2022-05-24 2022-09-13 马鞍山钢铁股份有限公司 物料连续输送中的杂物清理机器人及其控制方法
CN115041431B (zh) * 2022-05-24 2024-01-12 马鞍山钢铁股份有限公司 物料连续输送中的杂物清理机器人及其控制方法

Also Published As

Publication number Publication date
DE1634031B2 (de) 1973-12-13
GB1118955A (en) 1968-07-03
DE1634031A1 (de) 1970-05-27
CH474629A (de) 1969-06-30
DE1634031C3 (de) 1974-07-11

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