US1741498A - Continuous-settling apparatus - Google Patents

Continuous-settling apparatus Download PDF

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Publication number
US1741498A
US1741498A US265793A US26579328A US1741498A US 1741498 A US1741498 A US 1741498A US 265793 A US265793 A US 265793A US 26579328 A US26579328 A US 26579328A US 1741498 A US1741498 A US 1741498A
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United States
Prior art keywords
raking
tank
support
supporting
outer end
Prior art date
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Expired - Lifetime
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US265793A
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English (en)
Inventor
Samuel I Bousman
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Dorr Co
Original Assignee
Dorr Co
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Filing date
Publication date
Priority to NL36038D priority Critical patent/NL36038C/xx
Priority to BE357812D priority patent/BE357812A/xx
Application filed by Dorr Co filed Critical Dorr Co
Priority to US265793A priority patent/US1741498A/en
Priority to DED57207D priority patent/DE569289C/de
Priority to GB36421/28A priority patent/GB308770A/en
Application granted granted Critical
Publication of US1741498A publication Critical patent/US1741498A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2416—Liquid distributors with a plurality of feed points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments

Definitions

  • This invention pertains to apparatus for 4sweeping non-circular areas with a continuous rotary movement, and 1s especially adaptedfory use in sedimentation apparatus such as clarifiers where settled solids are swept to a point of discharge. It is frequently desirable tolemploy clarifier tanks differing from the old round shape, rectangular tanks being usuallyv preferred; but the removal of solids from the corners of such tanks, especially where the solids are heavy' as in metallurgical operations, presents a dify ficult problem. Drag Scrapers are subject to excessive wear and the submerged bearings are a constant source of trouble; while rotary mechanisms heretofore successfully used in practice are of the articulated type which with some materials requires periodical replacement of the submerged wearing partst necessarily employed. y i
  • the general object of this invention is to provide sweeping mechanism for the purpose indicated which is entirelyfree from submerged wearing surfaces or bearings, and is adapted to move heavy solids continuously to a point of discharge. Furthermore, the preferred arrangement is suitable for practical construction in the larger sizes sometimes required in sedimentation operations, clarifiers of two hundred feet in' diameter being now in operation.
  • tion is adapted for support and drive without the use of a superstructure. It is also advantageous to employ peripheral drive on larger units, since for efficient sedimentation the linear speed of the outer end of the sweeping arm .must not exceed a predetermined rate, as higher speeds will produce agitation which will disturb sedimentation. It is extremely/ ⁇ diiiicultto provide the lproper peripheral speed with a central drive in clariiers of large size; while peripheral drive with a nonround clarifier tank has heretofore been considered impracticgl. This problem has been solved by the present invention, permitting the construction of rectangular clariiers in the large sizes employing'peripheral drive.
  • the arrangement however involves serious secondary problems, including the ⁇ provision of a suitable central support, ⁇ proper electrical connections which should extend from a ery of the tank, additional raking capacity near the center of the clarifier,- and adjustability to the inevitable irregularities in the supporting and guiding means around the periphery of the clarifier.
  • the present invention contemplates the usel of a sweeping member supported and guided at oneI end by means extending around the periphery of the tank and which may follow a periphery of any desired contour:
  • An independent central sweeping or raking device may also be rotatably mounted in the clarilier, and may be operated by the mainsweep.
  • Fig. l is a plan view of a sedimentation apparatus or clarifier embodying the invention
  • Fig. 2 is a transverse vertical section on-line 2--2 of Fig. l, the sweeping or raking mechanism being shown in' side elevation;
  • the feed enters through feed launder 11y and passes through inlets .12 into the clari- .
  • the sweeping device which in practice is t usually referred to as a rake, includes a main reciprocating rake unit supported and guided at its outer end along the periphery of the clarifier, and'supportecl and guided adjacent its inner end at a point which preferably is at the center of the clarifier, by means which permits the unit to slide inwardly and outwardly in conformity with the movements of the outer end of the unit, while also permitting the necessary rotary movement.
  • the preferred form includes theuse of a pillar 15 in approximately the center of the clarifier, with a suitable structure permitting bothreciprocation and rotation ofthe rake unit mounted on the upper end of the pillar.
  • the latter also supports an auxiliary rake unit rotating with the main rake lunit and adapted to sweep the central portion of the clarifier.
  • the solids are carried by these units to a suitable discharge which should be located adjacent the center of the clariiier, and may conveniently include a gutter 16 about the base of the pillar 15, and an underflow discharge pipe 17 communicating with the bottom of the gutter.
  • the main rake unit comprises in general a framework, raking means on the bottom thereof, supporting means on the inner end, and supporting and driving means on the outer end.
  • the framework in the form illustrated comprises a truss 18 having spaced upper members 19 and spaced lower members 20, suitably interconnected and braced.
  • Rakes. 2l are mounted on its lower members 20, preferably comprising vertical blades set at an angle to the direction of travel of thetruss 18 and positioned to sweep toward the center solids which have settled on the clarifier bottom.
  • These rakes. may be constructed and arranged in accordance with standard practice, and ma be of any known type, the invention not eing ,restricted to the luse of a series of separate rakes'.
  • the rakes should extend along the bottom of truss 18 from a position adjacent the tank margin for a distance suiiicicnt to provide suitable overlap with the auxiliary rakes during the entire cycle of rotation. l
  • The. arrangement illustrated includes a framework carrying the end of the truss 18 and supported by roller means on a suitable track 22 which passes around the periphery of the tank, and may be bridged over the feed inlets and the discharge for .supernatant liquid.
  • a self-containedV electric motor drive unit is included, preferably engaging the supporting roller or wheel;
  • the supporting frame includes a bed plate 23 on which the truss 18 is supported .as by mounting the upper member 19 on opposite ,j
  • An electric motor 24 is also mounted on the bed plate and is connected by belting 25 to pulley 26 on Worm 27 which drives worm gear 28 whose vertical shaft 29 carries at its lower end a bevel gear 30 meshing with a bevel gear 31 suitablycon-4 nected to a supporting and driving roller or wheel.
  • An upper housing-32 mounted on the bed plate 23 encloses the worm 27 and worm gear 28 including suitable bearings for both, and preferably of the completely enclosed type adapted to cant.
  • the bevel gear -30 projects from the lower part of the upper housing 32.
  • the supporting and guiding parts arev mounted on a carriage 33 which should have pivotal movement relative to the bed plate 23.
  • the upper part of the carriage 33 includes a roller race 34 formed between suitable annular surfaces on thelupper face of the carriage 33 and the lower face of the bed plate 23, in which a suitable series of rollers 35 mounted in rings 36 in the usual manner.
  • the rotary myement be filled with a suitable lubri ⁇ being restricted to a fixed axis by a/'suitable v means, such as the circular flange 37 on the bed plate 23 engaging a circular recess 38 in the carriage 33.
  • the supporting roller for. traction purposes; and in the form shown this is conveniently accomplished by employing a roller 39 integral with the hub-.of gear 31 and having a wearing shoe 40 resting on the track 22.
  • the roller 39, and of course the gear 31, are mounted on a shaft 4l carried in 'suitable bearings 42 in the carriage 33.
  • Means is also provided on carriage 33 for resisting lateral movement as the carriage moves the adjacent end of the truss toward or from the pillar 15.
  • This preferably comprises means such as rollers engaging opposite sides of the track 22, whichnay consist of standard railroad rails.
  • guide rollers 43 are mounted in pairs on opposite sides of the track 22 at each end of the carriage 33, adapted to engage the sides of the track, the rollers of each pair being suiiiciently spaced from the track to permit the necessary curvature of same when rounding the corners of the clarifier.
  • FIG. 5 The -construction for supporting and guiding the inner end of the main rake truss 18 and for supporting and rotating the auxiliary rakes, is shown in Figs. 5 and 6.
  • this arrangement includes a sliding support permitting reciprocationof the truss 18, a rotating support for said truss, a rot-ating In the construci support for the auxiliary rakes, and an actuating connection between the auxiliary rake support and the parts rotatedr by the truss 18.
  • a spider 44 is mounted on the upper end of pillar 15 and carries a circular track 45 on which is mounted the revolving head indicated generally at 46, which mayv include an outer frame ring 47 having an annular bearing flange 48 resting on thetrack 45, a suitable lubricant belng' provided between track 45 and the flange 48.
  • a supporting frame 75 for the truss 18 ispivotally mounted on opposite sides of the head 46, as by means of pivot shafts 49 extending through bearings in the frame ring .47 and mounted on-the side members 50 which with the end members 51 form a' rectangular supporting frame for the truss 18, the frame being of suliicient size to clear the head 46.
  • the truss 18 is'supported by the frame in suitable-manner, as by means of rollers 52 carried by shafts 53 mounted in the frame.
  • a suitableV track is provided in connection with the upper members 19 of the rtruss 18.
  • This track may consist of a channel 54 resting on each pair of aligned rollers and connected as by plates.55, angle 56 and plates 57 with the truss member 19.
  • the rollers 52 have flanges 58 bearing against the inner faces of the channel tracks 54 to ensure rotation ofthe frame 'with the truss 18.
  • the brushes being mounted on an annular plate 65 resting on the spider 44 and .extend-A ⁇ being covered by a hood 70.
  • the brushes 67 contact with. a vertical series of bus bars 71 mounted on a block of insulation 72 carried by a channel 54.
  • a suitable cable .73 running along a top member 19 of the truss 18 connects the bus bars 71 with the motor 24.
  • Auxiliary raking means may be provided for raking the central portion of the clarifier both for the purpose of raking portions of theV bottom not conveniently covered by the main ⁇ rakes 21, and. because of the substantially greater proportion of solids near the center of the clarifier, normally requiring additional raking to preserve the propereven travel of the solids to the central discharge.
  • the auxiliary rakes may conveniently be supported from and actuated by the frame 75 or equivalent connections to the rotatin head 46, whichV is automatically revolved y the truss 18.
  • auxiliary rake arms including a long arm 74 extending in a direction generally opposite to that of the truss 18g a short arm 76 extending under the truss 18 and side arms 77 spaced between the arms 74 and 76.
  • These arms are mounted onvv any suitable framework such as a rectangular bottom frame 78 to which the arms are directly attached; hangers 79 connecting the bottom frame 78-with the frame 75, preferably connecting 7with the end lmembers 51 ofv the latter; and suitable brac- It is preferable in most cases'to provide the raking zone, of the auxiliary rakes with a slight slope toward the gutter 16, forming a central cone 81; and to employ a relatively flat surface 82 from the cone 81 tothe pel lla() riph'ery ofthe tank, over which the rakes 20 are operative.
  • any suitable framework such as a rectangular bottom frame 78 to which the arms are directly attached; hangers 79 connecting the bottom frame 78-with the frame 75, preferably connecting 7with the end lmembers 51 ofv the latter; and suitable brac- It is preferable in most cases'to provide the raking zone, of the auxiliary rakes with a slight slope toward the gutter 16, forming a central cone 81; and
  • auxiliary rake 76 and the adj acent portions of thev truss 18 are arranged so that the latter may slide in and out over said rake; but if desired all auxiliary rakes lying inthe path of reciprocation of the rakes 21 may be dispensed with, in which case the use of a slope in the cone area 6l is optional, de# pending upon the material treated.
  • cone 81 is shown as extendingkover a relatively small part of a clarifier area, this is for purely illustrative-purposes, as it may be extended as far as desired toward the sides of the tank, the primary function of the truss 18 being to scrape the corners of the tank in a zone outside of a circle drawn from the axis of rotation'of the truss as a center with the distance to the nearest point on the sidewalls of the clarifier as a radius.
  • the motor 24 is started by connecting the cable 64 with a suitable source ofeletricity (not shown) starting the motor 24 which through theintermediate gearing described rotates the roller 39, propelling the carriage 33 along the track 12.
  • a suitable source ofeletricity not shown
  • the motor 24 which through theintermediate gearing described rotates the roller 39, propelling the carriage 33 along the track 12.
  • the carriage 33 travels awav from the pillar 15 it is held on vthe ltrack 22 -by rollers 43, pulling the truss 18' outwardly, the channel tracks 54 traveling over rollers 52 and rotating frame 75 and head 46 through engagement with the flanges 58 of said rollers.
  • auxiliary rakes 74, 76 and 77 are rotated over the cone l88 with the frame 75, while ⁇ the rakes on .truss 18 ysweep the plane surface 82'cont1nul ously.
  • rollers 52 need not be positioned so that the rakes 21 will have reciprocating movementin a horizontalkdirection, the surface 82 likewise is not restricted to the horizontal; and it is well recognized that in certain fields of use aslope toward the center may be of Value.
  • Apparatus for sweeping a peripheral zone of a non-circular area including a sweeping member, means for guiding the outer end of the member along the periphery of the area, a support on which the inner end 'of the member is mounted by means permitting reciprocation of the member relative to the support,', ⁇ and means for driving the member.
  • Apparatus for raking a peripheral zone of the bottom of a non-circular sedimentation tank including a raking member, means for guiding the outer end of the member along the periphery of the tank, a support on which the inner end of the member is mounted by means permitting reciprocation of the member relative to the support, and means for driving the member.
  • Apparatus for raking a peripheral zone of the bottom of a non-circular sedimentation tank including a raking member, means for of the bottom of a non-circular sedimentation A.
  • 'Apparatus for raking a peripheral zone of the bottom of a non-circular sedimentation tank including a raking member, means ,for guiding the outer end of the member along the periphery of the tank, a support, and a rotating element on the support including supporting means at opposite sides of the axis of rotation on which the inner end of said member is'slidably supported.
  • Apparatus for raking the bottom of a non-circular ⁇ sedimentation tank including a raking member, means for guiding the outer end of the member along the periphery of the tank, a support, a rotatable element on the support and roller bearings supporting the inner end of the raking memberon said element, said roller bearings being rconstructed and arrapged to permit Vertical 4movements ofthe inner end ofthe member corresponding to vertical movements of the outer end of said member during travel around the periphery of the tank.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, means'y for guiding the outer end of the member along theperiphery of the tank, a support, a revolving head mounted on thesupport for rotation about a fixed axis, supporti/ng means movably mounted on the head,- and means forl slidably supporting the inner end of the member upon said ⁇ support- I raking member, means for guiding the outer ing means.
  • Apparatus for raking the.bottom of a non-circular sedimentation tank including a end ofthe member along the periphery of the tank, a support, arevolving head mounted on the support for rotation about a iixed axis, supporting means pivotally mounted on the head, and means for slidably supporting'the inner end of the member upon said supporting means.
  • Apparatus for raking the bottom of Ura non-circular sedimentation tank including'a raking member, means for guiding the outer endof the member along the periphery of the tank, a support, a revolving head mounted on the support for rotation about a fixed axis,
  • Apparatus for raking kthe bottom of noncircular tanks including a raking member, means for guiding the outer end of themember along the periphery of the tank, a central pedestal support in the tank extending above the li uid level, means for mounting the inner en of the member on said suptank, and means ⁇ for supporting theinner end of the member within the periphery of the tankl permitting reciprocation of said inner end, one of said supporting means including a single point of support transversely of said member, and the other supporting meansv comprising -at least two points of support transversely of said member, the construction being such that a three point support arrangement is provided permitting said member to adjust its transverse position to the relative positions of the supports at all points during rotation of said member.
  • Apparatus for sweeping the bottom of non-circular sedimentation tanks including a raking member, means for guiding the'outer end of the member along the peripheryl of the tank, a single roller supporting saidu outer end, a support for the inner end of the memi ber, and'means for supporting said inner end upon the support at two points spaced horizontally transversely of the member.
  • Apparatus for raking a peripheral zone of the bottom of a non-circular sedimentation tank including a raking member, means for guiding the outer end of the member along the periphery 'of the tank, a support on which the inner end of the member is mounted by means permitting reciprocation of the member relative to the support, and means at the outenend of'said member for propelling said outer end along the periphery of the tank.
  • Apparatus for raking a peripheral zone ofthe bottom of a non-circular sedimentation tank including la raking member, means for guiding the outer end of the member along the periphery of the tank, a support on which the inner end of the member is mounted by means permitting reciprocating of the member relative to the support and electrical means at the outer end of said member for propelling said outer end along the periphery the peripheryof the tank, a support on which the inner end of the member is mounted by” means permitting reciprocation of the member relative to thsupport, electricaldr'rving means at the outer end of said member for propelling said outer end along the periphery of the tank and electrical connections extending from said electrical driving means along said member and said support,
  • Apparatus ⁇ for raking the bottom of a non-circular sedimentation tank including a raking member, a support, a rotating element on the support on which the inner end of the member is slidably supported, electrical driving means at the outer end of the member for propelling said end along the periphery of the ⁇ tank, and electrical connections to saiddriving means extending along the member and including sliding connections mounted on saidrotating element and support.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, a support for the inner end of the member, a track extending around the periphery of the tank, means for supporting the outer end of the member, and means on said member engaging opposite faces of the track to guide the outer end of the member along vthe/periphery of the tank.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, a support for the inner end of the member, a trackway extending around the periphery of the tank, a drive frame on.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking membera support for the inner end outer end of the of the member a supporting roller for the member traveling around the periphery of the tank, a carriage on which the rolleris mounted, and al rotatable bearing supporting-the outer end of said'member on -the carriage.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, a supportdor the inner end of the memberfa supporting roller lfor the' outer end of the member traveling around the periphery-of the tank, a carriage on which. the roller is mounted, a drive frame on the outer end of the member, drive means mounted thereon, av rtatable bearing supporting the drive frame on the carriage, and drivin connections between the driving means and the roller.
  • Apparatus for raking the bottom yof a non-circular sedimentation tank including a raking member, a support for the inner end of the member, and means for su porting and driving the outer end of the mem er ⁇ along the lperiphery ofthe tank including a s pporting roller adapted to travel along the periphery, a carriage on which the roller is mounted, an annular roller bearing track on saldcarriage on Which the outer end of the member is supported, and drive means on said outer end 4connected to the roller.
  • Apparatus for raking the bottom of a lnon-circular sedimentation tank including a raking member, a support for the inner end of the member and means forsupporting and driving the outer end of the member includ-- ing a rollei ⁇ adapted to travel yalongthe p eriphery of the tank, a carriage on Which said roller is mounted, "a gear connected to said roller and carried by the carriage, a bearing on said carriage on which the outer end .of the member 1s freelysupported Aand drive gearing on said outer end engaging the 'gear on the carriage, the construction being such that said carriage and the outer end of the member are freely separable ⁇ by relative Vertical movement. y 27..
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, a support for the (inner end of the member, and means for supporting and guiding the outer end of the membei' along the periphery, a roller on the track, a carriage carrying said roller and mounted on the outer en d 0j the member and aplurality of pairs of guide rollers mounted on the carriage andv Aengaging opposite faces of the track, the adjacent faces of the/rollers of each pair being spaced apart a distance sufficiently in excess of the transverse dimensions of the track adjacent the corners of thetank to com-,1v
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, means for guiding the outer end of the member along the periphery of the tank, a support, central raking means mounted on the support, and means for supporting the inner end of said member on the central raking means.
  • Apparatus for raking the bottom of a l non-circular sedimentation tank including a raking member, means for guiding the outer end oi' the member along the periphery of the tank, a pedestal support on the bottom of the tank, central raking means rotatably mounted on said support above the Water level, and
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, means for guiding the outer end of the member along the periphery of the tank, a support, central raking means rotatably mounted on the support, means for slidably mounting the inner end of said member on the support, and driving connections between said inner end and said raking means.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raking member, means for guiding the outer end of the member along theperiphery of the tank, a support, a frame rotatably mounted on the support, meansfor slidably supporting the inner end of the member on the frame and raking means depending from the frame.
  • Apparatus for raking lthe bott-om of a non-circular sedimentation tank including a l raking member extending radially in said tank to the periphery thereof means for impelling said member along the periphery of the tank in a non-circular path to rake a peripheral zone in said tank7 and central raking means raking the circular zone 1n said tank which includes the entire inner margin o said peripheral zone, the construction being' such that the entire bottom of said tank is raked by saidv raking member and central rakf ing means.
  • Apparatus for raking the bottom of a non-circular sedimentation tank including a raklng member, means for impelhng said member along a non-clrcular peripheral zone on the bottom of the tank and central raking means in said tank extending beneath the path of said raking member.
  • Sedimentation apparatus including a non-circular sedimentatlon tank having' a bottom comprising a conical circular central portio'nfand a flat peripheral portion extending fromthe central portion to the periphery of the tank; rotating raking means traveling over the central'portion and rotating raking means traveling overthe peripheral portion of the bottom.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Extraction Or Liquid Replacement (AREA)
US265793A 1928-03-29 1928-03-29 Continuous-settling apparatus Expired - Lifetime US1741498A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL36038D NL36038C (en:Method) 1928-03-29
BE357812D BE357812A (en:Method) 1928-03-29
US265793A US1741498A (en) 1928-03-29 1928-03-29 Continuous-settling apparatus
DED57207D DE569289C (de) 1928-03-29 1928-12-08 Vorrichtung zum Ausraeumen unrunder Absetzbehaelter
GB36421/28A GB308770A (en) 1928-03-29 1928-12-10 Improvements in or connected with rotary apparatus for collecting and discharging settled matter from the floors of rectangular settling tanks and like surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US265793A US1741498A (en) 1928-03-29 1928-03-29 Continuous-settling apparatus

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Publication Number Publication Date
US1741498A true US1741498A (en) 1929-12-31

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Application Number Title Priority Date Filing Date
US265793A Expired - Lifetime US1741498A (en) 1928-03-29 1928-03-29 Continuous-settling apparatus

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US (1) US1741498A (en:Method)
BE (1) BE357812A (en:Method)
DE (1) DE569289C (en:Method)
GB (1) GB308770A (en:Method)
NL (1) NL36038C (en:Method)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427092A (en) * 1944-08-26 1947-09-09 Graver Tank & Mfg Co Inc Scraper structure for liquid treatment tanks
US2427091A (en) * 1943-10-25 1947-09-09 Graver Tank & Mfg Co Inc Liquid treatment tank with a solids impeller means having a normally submerged drivewheel
CN111924906A (zh) * 2020-08-11 2020-11-13 枣庄学院 一种生活污水自动化处理机械及处理方法
US10974175B2 (en) * 2019-08-12 2021-04-13 United Conveyor Corporation Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization
CN115143272A (zh) * 2022-07-28 2022-10-04 淮北市中芬矿山机器有限责任公司 一种用于周边传动浓缩机传动机构的自动化润滑装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972008C (de) * 1952-01-01 1959-05-06 Passavant Werke Fahrwerk fuer in rechteckigen Absetzbecken arbeitende Schlammraeumer
AT385207B (de) * 1985-05-20 1988-03-10 Voest Alpine Ag Becken, insbesondere rundbecken

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427091A (en) * 1943-10-25 1947-09-09 Graver Tank & Mfg Co Inc Liquid treatment tank with a solids impeller means having a normally submerged drivewheel
US2427092A (en) * 1944-08-26 1947-09-09 Graver Tank & Mfg Co Inc Scraper structure for liquid treatment tanks
US10974175B2 (en) * 2019-08-12 2021-04-13 United Conveyor Corporation Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization
US11511216B2 (en) * 2019-08-12 2022-11-29 United Conveyor Corporation Clarifier rake configuration and system and method including the same for bottom ash handling related to flue gas desulfurization
CN111924906A (zh) * 2020-08-11 2020-11-13 枣庄学院 一种生活污水自动化处理机械及处理方法
CN111924906B (zh) * 2020-08-11 2023-03-17 枣庄学院 一种生活污水自动化处理机械及处理方法
CN115143272A (zh) * 2022-07-28 2022-10-04 淮北市中芬矿山机器有限责任公司 一种用于周边传动浓缩机传动机构的自动化润滑装置

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GB308770A (en) 1929-10-31
NL36038C (en:Method)
BE357812A (en:Method)
DE569289C (de) 1933-02-01

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