GB2361196A - Scraper arm lifting mechanism - Google Patents

Scraper arm lifting mechanism Download PDF

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Publication number
GB2361196A
GB2361196A GB0008949A GB0008949A GB2361196A GB 2361196 A GB2361196 A GB 2361196A GB 0008949 A GB0008949 A GB 0008949A GB 0008949 A GB0008949 A GB 0008949A GB 2361196 A GB2361196 A GB 2361196A
Authority
GB
United Kingdom
Prior art keywords
scraper
bridge
lifting mechanism
arm
arms
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.)
Withdrawn
Application number
GB0008949A
Other versions
GB0008949D0 (en
Inventor
Anthony George Rawlings
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0008949A priority Critical patent/GB2361196A/en
Publication of GB0008949D0 publication Critical patent/GB0008949D0/en
Publication of GB2361196A publication Critical patent/GB2361196A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning In General (AREA)

Abstract

A mechanism is provided for lifting scraper arms in situ relative to the supporting bridge of a rotary or other sludge scraper assembly of a settling tank or the like. The arms are carried by a frame which is slidable up and down a vertical stainless steel tube by means of a winch, cable and pulleys. This allows access to the arms to change rubbers thereon even during motion of the assembly.

Description

2361196
DESCRIPTION
STAINLESS STEEL SCRAPER ARM LIEFTING MECHANISM This invention relates to a Scraper Arm Lifting Mechanism used for and on rotating or linear scraper bridges for sewerage / effluent processing.
Scraper arms are used for scraping the sludge in the base of hopper bottomed tank to the central collecting pit. There are many variations; however, all scraper arms are required to scrape the sloping floor. Most scraper arms are fixed to the bridge structure, but require a total drain down to maintain and or replace scraper rubbers.
The Scraper Arm Lifting Mechanism consists a vertical stainless steel tube with a back guide rib stitched welded to the back of the liffing tube. This is fixed to the bridge structure at approx. I. 5m down from the top. A hand winch is fixed on top of the lifting tube via a rotating mounting sleeve. The scraper arm is fixed to a sliding frame that rides up and down the lift tube via a set of guides that surround the lift tube. The fixing to the slide frame is via a hinge bolt arrangement. The scraper arm consists of a box section frame with horizontal rotary action to allow adjustment to tank pitch.
The Scraper Arm has a formed right angle sheet at the end of the artn approx. 2.4m long, to which a length of rubber is attached to the plate complete with a backing strip and fixing bolts.
The detailed description below makes reference to the Figures 1 -
Figure 1 shows elevations of the Scraper Arm Lifting Mechanism attached to Scraper Bridge.
Figure 2. Shows plan view of scraper arms in there operating position.
Figure 3. Shows the assembly of the lifting mechanism. It has all the main components labelled.
Figure 4. Shows Plan & elevation detail of scraper blade to which the rubber scraper strips is attached.
Figure 5. Shows the assembly of the sliding guide frame assembly.
Figure 6. Shows the lifting tube in elevation.
I

Claims (4)

1. A Scraper Arm Lifting Mechanism for scraping tanks. The arm may be of various materials and lengths. The Scraper Artn Lifting Mechanism consists of lifting tube, which secure to bridge. A sliding guide frame, pivoting arm, winch, winch cable and pulleys, scraper rubber.
2. As claim 1 wherein the arm can be lifted and accessed from bridge structure.
3. As claim 1, 2 and 3 arms can be accessed even when bridge is in motion and process. No need to stop bridge motion.
4. As claim 1,2,3 and 4 rubber Scraper strips can be fully maintained and / or replaced ftom bridge with out having to drain and or stop process.
GB0008949A 2000-04-12 2000-04-12 Scraper arm lifting mechanism Withdrawn GB2361196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0008949A GB2361196A (en) 2000-04-12 2000-04-12 Scraper arm lifting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0008949A GB2361196A (en) 2000-04-12 2000-04-12 Scraper arm lifting mechanism

Publications (2)

Publication Number Publication Date
GB0008949D0 GB0008949D0 (en) 2000-05-31
GB2361196A true GB2361196A (en) 2001-10-17

Family

ID=9889721

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0008949A Withdrawn GB2361196A (en) 2000-04-12 2000-04-12 Scraper arm lifting mechanism

Country Status (1)

Country Link
GB (1) GB2361196A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071033A1 (en) * 2006-12-12 2008-06-19 Fenchao Wu A continuous subsider with balanced rotation under chassis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365630A (en) * 1929-10-22 1932-01-20 Max Pruss Improvements in and relating to liquid clarification tanks
GB1420489A (en) * 1972-12-22 1976-01-07 Warman Equip Int Setting tank scraper assembly
GB1538166A (en) * 1975-12-22 1979-01-10 Chlorella Ind Co Chlorella-culturing apparatus
US4462908A (en) * 1982-10-25 1984-07-31 Dorr-Oliver Incorporated Rake lifting means for sedimentation apparatus
DE4000307A1 (en) * 1990-01-08 1991-07-11 Passavant Werke Drive for bridge-mounted scraper and thickener machinery - has framework fixed to central column that can be raised to cater for build-up of sludge on tank floor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365630A (en) * 1929-10-22 1932-01-20 Max Pruss Improvements in and relating to liquid clarification tanks
GB1420489A (en) * 1972-12-22 1976-01-07 Warman Equip Int Setting tank scraper assembly
GB1538166A (en) * 1975-12-22 1979-01-10 Chlorella Ind Co Chlorella-culturing apparatus
US4462908A (en) * 1982-10-25 1984-07-31 Dorr-Oliver Incorporated Rake lifting means for sedimentation apparatus
DE4000307A1 (en) * 1990-01-08 1991-07-11 Passavant Werke Drive for bridge-mounted scraper and thickener machinery - has framework fixed to central column that can be raised to cater for build-up of sludge on tank floor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071033A1 (en) * 2006-12-12 2008-06-19 Fenchao Wu A continuous subsider with balanced rotation under chassis
CN101547726B (en) * 2006-12-12 2011-08-17 武奋超 A continuous subsider with balanced rotation under chassis

Also Published As

Publication number Publication date
GB0008949D0 (en) 2000-05-31

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)