US3704571A - Washer mechanism for electrostatic precipitator - Google Patents

Washer mechanism for electrostatic precipitator Download PDF

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Publication number
US3704571A
US3704571A US40794A US3704571DA US3704571A US 3704571 A US3704571 A US 3704571A US 40794 A US40794 A US 40794A US 3704571D A US3704571D A US 3704571DA US 3704571 A US3704571 A US 3704571A
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US
United States
Prior art keywords
chain
header assembly
sprocket
panel
engagement
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
US40794A
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English (en)
Inventor
Ivan T Burney
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.)
AMERICAN DAVIDSON Inc
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of US3704571A publication Critical patent/US3704571A/en
Assigned to AMERICAN DAVIDSON, INC. reassignment AMERICAN DAVIDSON, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WESTINGHOUSE ELECTRIC CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/78—Cleaning the electrodes by washing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18088—Rack and pinion type
    • Y10T74/18104—Shiftable pinion

Definitions

  • PATENTED DEC 5 2 WASHER MECHANISM FOR ELECTROSTATIC PRECIPITATOR CROSS REFERENCE TO RELATED APPLICATIONS So far as is known, this invention is not related to any co-pending patent applications.
  • Electric precipitators are widely used to remove dirt and pollutants from atmospheric gases and it has been a common practice to position one or more precipitator cells in an upright panel in a manner that they may be washed to remove accumulated deposits on the precipitator plates at predetermined time intervals.
  • washing apparatus for this purpose and a common form is a vertically disposed header tube assembly having a plurality of spray nozzles in an arrangement that may be traversed in front of a precipitator panel so that all parts of the precipitator plates may be contacted with washing-fluids or the like.
  • the washing mechanism'can be reliably operated by remote control without frequent maintenance it should be simply constructed to have a minimum of moving and wearing parts requiring lubrication, and maintenance.
  • one or more precipitator cells are arranged in a generally upright panel with their parallel plate electrodes extending substantially vertically.
  • a substantially vertically disposed washer header or tube is suspended from a header assembly that is movably mounted on a track extending in front of and across the panel near the upper portions thereof.
  • the lower end of the tube may be provided with an additional guide means engaging a track surface extending along the lower portions of the panel to maintain a desired attitude for the header assembly as it traverses the panel for washing purposes.
  • a flexible sprocket chain is supported in front of the panel along the path of movement of the header assembly and a rotatable shaft with a sprocket gear having its teeth engaging the chain sprockets is journaled on the header assembly so that rotation of the shaft and sprocket will vause the header assembly to move along the chain and traverse the front of the panel for washing purposes.
  • the shaft is rotated by an electric motor in one direction of rotation only and there are means disposed at each end of the chain to move the sprocket around the end of the chain from engagement with one side of the chain into engagement with the other side of the chain so that the header assembly will be reciprocally traversed as the sprocket is continuously rotated in one direction of rotation.
  • FIG. 1 is a front elevational view of a panel of precipitator cells with a washer header assembly disposed at an approximately intermediate position in front of the panel.
  • FIG. 2 is a side elevational view of the apparatus as shown by FIG. 1.
  • FIG. 3 is an enlarged fragmentary view showing the header apparatus in a position to be moved from the left-hand end of the flexible chain.
  • FIG. 4 is a side elevational view similar to that of FIG. 3, and
  • FIG. 5 is a fragmentary detail view showing the sprocket and chain at intermediate positions around the end of the flexible chain as moving from engagement with the underside of the chain into engagement with the upper side of the chain for traversing movement from left to right of the panel.
  • FIGS. 1 and 2 of the drawings a plurality of the precipitator cell units are shown at 10 through 18 to be arranged in panel form within the substantially vertical frame member uprights 19 and 20.
  • Each of the precipitator cells 10-18 may be of any known design and includs a plurality of substantially vertically disposed parallel plate electrodes upon which pollutants in the gases passing through the panel are deposited during operation of the precipitator apparatus as is well known to those skilled in the art. Because of the accumulation of deposits on the electrode assemblies of the precipitator cells 10-18, it is necessary to periodically wash the deposits off of the electrodes in order to maintain the efficiency of the precipitator apparatus.
  • a washer header tube 25 is suspended from a header assembly 26 that is movably mounted to depend from the track 27 extending generally across the front of the panel near the upper portions thereof.
  • the header assembly 26 may be supported on the track 27 in any suitable manner, a pair of wheels 28 and 29 are shown to enable the header assembly 26 to be easily movable along the track 27 in either direction.
  • the lower end of the washer tube 25 may be provided with a bracket member 31 having a wheel 32 engaging a lower track surface 33 of the precipitator panel 3.
  • the washer tube 25 is maintained in a desired substantially vertical attitude as it may be moved to traverse in front of the precipitator panel.
  • this invention is not limited to any particular arrangement for movably supporting the depending washer tube 25 on the track surface in front of the precipitator panel, and for example the lower bracket 31 can be omitted without substantially impairing'the operation of the washer tube traversing mechanism being described.
  • a flexible sprocket chain 40 is suspended along the path of movement of the header assembly 26 in front of the precipitator panel.
  • a rotatable shaft 41 is journaled on the header assembly bracket 26 and a OlOl toothed sprocket gear 42 is mounted on the shaft 41 for rotation therewith.
  • the bracket assembly 26 will be moved in a direction to the right of the drawing for traversing the precipitator panel from left to right.
  • the sprocket gear 41 is rotated by means of an electric motor 43 also mounted on the header bracket assembly 26. It should be obvious that the shaft 41 and sprocket 42 maybe rotated by any suitable mechanism other than the electric motor and may be rotated in either direction of rotation for moving the header assembly accordingly.
  • the preferred form of the invention provides that the electric motor 43 be simply constructed and energized for rotation in one direction of rotation only.
  • the shaft 41 and sprocket 42 are rotated in a clockwise direction. While the teeth of the sprocket 42 are engaging the upper side of the sprocket chain 40 as shown by FIG. 3 of the drawings, the clockwise rotation of the sprocket 42 will cause the header assembly to move from left to right as previously described.
  • Each end of the flexible chain 40 is supported on a pivotal bracket or link member 50 and 51.
  • the link members 50 and 51 are substantially identical except that link 50 is.
  • a generally U-shaped member 60 is positioned coaxially of the shaft 41 with its arms 61 and 62 extending above and below the sprocket 42 so as to maintain the engagement of the sprocket teeth and chain as'the sprocket is rotated to move along the chain.
  • sprocket teeth 42 are again brought into engagement with the upper side of the flexible chain 40 so that continued clockwise rotation of the shaft 41 and sprocket 42 will cause the header assembly 26 to again reverse direction and move to traverse the panel from left to right.
  • continuous rotation of the shaft 41 and sprocket 42 in a clockwise direction will cause the header assembly 26 to reciprocate back and forth in a traversing movement in front of the precipitator panel.
  • a switching control circuit (not shown) will provide for deenergization of the electric motor 43 so as to discontinue the traversing movement of the washer tube.
  • An electrostatic precipitator comprising, an upright panel of at least one precipitator cell, each cell having a plurality of substantially vertically disposed plate electrode elements upon which dirt particles are to be precipitated, a substantially horizontal track extending in front of the upper portions of said panel, a washer header assembly supported to depend from said track for traversing movement in front of said panel for directing a washing fluid on said elements as said header is traversed, a sprocket chain supported adjacent said track in front of said panel along the path of movement of said header assembly, a bracket extending from a lower portion of said header assembly into sliding engagement with a lower front surface of said panel responsive to gravitational forces'to maintain a desired essentially vertical attitude of said header during traversing movement, and a shaft rotatably mounted on said header assembly and having a sprocket gear secured thereto in a manner to engage its teeth with the sprockets of said chain whereby said header assembly is traversed in front of said panel when said shaft is rotated.

Landscapes

  • Electrostatic Separation (AREA)
US40794A 1970-05-27 1970-05-27 Washer mechanism for electrostatic precipitator Expired - Lifetime US3704571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4079470A 1970-05-27 1970-05-27

Publications (1)

Publication Number Publication Date
US3704571A true US3704571A (en) 1972-12-05

Family

ID=21912991

Family Applications (1)

Application Number Title Priority Date Filing Date
US40794A Expired - Lifetime US3704571A (en) 1970-05-27 1970-05-27 Washer mechanism for electrostatic precipitator

Country Status (4)

Country Link
US (1) US3704571A (enrdf_load_stackoverflow)
JP (1) JPS5036506B1 (enrdf_load_stackoverflow)
CA (1) CA946753A (enrdf_load_stackoverflow)
GB (1) GB1288013A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240809A (en) * 1979-04-11 1980-12-23 United Air Specialists, Inc. Electrostatic precipitator having traversing collector washing mechanism
US4326951A (en) * 1980-03-17 1982-04-27 Broz Frank J Electrostatic mineral concentrator

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US129226A (en) * 1872-07-16 Improvement in sawing-machines
US348162A (en) * 1886-08-24 huber
US466352A (en) * 1892-01-05 Power-transmitter
US654446A (en) * 1900-01-26 1900-07-24 Payne & Joubert Power-transmitting mechanism.
US788226A (en) * 1904-09-19 1905-04-25 Horton Mfg Co Inc Mechanical movement.
US1191695A (en) * 1915-03-13 1916-07-18 Porter J Millikin Mechanical movement.
US1299803A (en) * 1916-11-11 1919-04-08 William C Howell Mechanism for operating earth-boring tools.
US1895618A (en) * 1927-10-12 1933-01-31 American Air Filter Co Air filter device
US2244607A (en) * 1940-12-09 1941-06-03 Karl T Blakeley Pump jack
GB586922A (en) * 1944-04-14 1947-04-08 Bert David Feild Improvements relating to rack and pinion devices for translating rotary motion into linear motion
FR954261A (fr) * 1946-10-23 1949-12-21 Dispositif du genre crémaillère à mouvement de va-et-vient ininterrompu et guide-câble muni d'un tel dispositif
US2591404A (en) * 1950-11-22 1952-04-01 Westinghouse Electric Corp Electrostatic precipitator
US2615529A (en) * 1948-10-01 1952-10-28 Westinghouse Electric Corp Electrostatic precipitator
FR1044650A (fr) * 1951-04-10 1953-11-19 Essuie-glace pour véhicules
US2737257A (en) * 1953-12-01 1956-03-06 Westinghouse Electric Corp Washers for electrostatic precipitators
US3006200A (en) * 1957-08-13 1961-10-31 Int Computers & Tabulators Ltd Motion converting apparatus
US3159472A (en) * 1961-01-27 1964-12-01 American Air Filter Co Electrostatic gas cleaning apparatus
US3229543A (en) * 1962-02-12 1966-01-18 Frank T Johmann Racks
US3415131A (en) * 1967-03-09 1968-12-10 Harold C. Zieber Driving mechanism

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US129226A (en) * 1872-07-16 Improvement in sawing-machines
US348162A (en) * 1886-08-24 huber
US466352A (en) * 1892-01-05 Power-transmitter
US654446A (en) * 1900-01-26 1900-07-24 Payne & Joubert Power-transmitting mechanism.
US788226A (en) * 1904-09-19 1905-04-25 Horton Mfg Co Inc Mechanical movement.
US1191695A (en) * 1915-03-13 1916-07-18 Porter J Millikin Mechanical movement.
US1299803A (en) * 1916-11-11 1919-04-08 William C Howell Mechanism for operating earth-boring tools.
US1895618A (en) * 1927-10-12 1933-01-31 American Air Filter Co Air filter device
US2244607A (en) * 1940-12-09 1941-06-03 Karl T Blakeley Pump jack
GB586922A (en) * 1944-04-14 1947-04-08 Bert David Feild Improvements relating to rack and pinion devices for translating rotary motion into linear motion
FR954261A (fr) * 1946-10-23 1949-12-21 Dispositif du genre crémaillère à mouvement de va-et-vient ininterrompu et guide-câble muni d'un tel dispositif
US2615529A (en) * 1948-10-01 1952-10-28 Westinghouse Electric Corp Electrostatic precipitator
US2591404A (en) * 1950-11-22 1952-04-01 Westinghouse Electric Corp Electrostatic precipitator
FR1044650A (fr) * 1951-04-10 1953-11-19 Essuie-glace pour véhicules
US2737257A (en) * 1953-12-01 1956-03-06 Westinghouse Electric Corp Washers for electrostatic precipitators
US3006200A (en) * 1957-08-13 1961-10-31 Int Computers & Tabulators Ltd Motion converting apparatus
US3159472A (en) * 1961-01-27 1964-12-01 American Air Filter Co Electrostatic gas cleaning apparatus
US3229543A (en) * 1962-02-12 1966-01-18 Frank T Johmann Racks
US3415131A (en) * 1967-03-09 1968-12-10 Harold C. Zieber Driving mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240809A (en) * 1979-04-11 1980-12-23 United Air Specialists, Inc. Electrostatic precipitator having traversing collector washing mechanism
US4326951A (en) * 1980-03-17 1982-04-27 Broz Frank J Electrostatic mineral concentrator

Also Published As

Publication number Publication date
CA946753A (en) 1974-05-07
JPS5036506B1 (enrdf_load_stackoverflow) 1975-11-25
GB1288013A (enrdf_load_stackoverflow) 1972-09-06

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Date Code Title Description
AS Assignment

Owner name: AMERICAN DAVIDSON, INC., 8111 TIREMAN AVENUE, DEAR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WESTINGHOUSE ELECTRIC CORPORATION A CORP OF PA;REEL/FRAME:004386/0282

Effective date: 19841219