EP0104222A1 - Appareil de nettoyage d'ecrans separateurs - Google Patents

Appareil de nettoyage d'ecrans separateurs

Info

Publication number
EP0104222A1
EP0104222A1 EP19830901122 EP83901122A EP0104222A1 EP 0104222 A1 EP0104222 A1 EP 0104222A1 EP 19830901122 EP19830901122 EP 19830901122 EP 83901122 A EP83901122 A EP 83901122A EP 0104222 A1 EP0104222 A1 EP 0104222A1
Authority
EP
European Patent Office
Prior art keywords
sections
cleaning apparatus
rakearms
cleaning
rakearm
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Withdrawn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
EP19830901122
Other languages
German (de)
English (en)
Inventor
Hans Hansson
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
Publication of EP0104222A1 publication Critical patent/EP0104222A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

  • the present invention refers to a cleaning apparatus for c cleaning of e.g. separation screens at turbine water inlets, fresh water intakes, intakes at waste-water treatment plants and the like, which cleaning apparatus includes a cleaning element which is vertically movable along the screen and mounted on a support or on a carriage, whereby the cleaning , Q apparatus is movable sidewards by means of the carriage or the like.
  • the purpose of the present invention is to provide a relatively easy and flexible cleaning apparatus which only needs a small space and which can work with a movable cleaning element down to great depths without the support or the carriage being exposed to unfavourable uneven loads or which results in an extensive overdimensioning of the cleaning apparatus.
  • the cleaning element includes at least two essentially parallel rakearms fixedly connected to each other by help of connection elements, and that the rakearms consist of telescopically movable telescopic sections, the ends of which are interconnected in pairs by cross springers.
  • Figure 1 shows a side view of the cleaning apparatus with the cleaning element in a position above the surface of water
  • Figure 2 shows the cleaning element according to figure 1 in
  • Figure 3 shows the upper part of a cleaning arm
  • Figure 4 shows the cleaning arm according to figure 3 in a view from above
  • Figure 5 shows a side view of the pulley which is arranged on the upper part of the cleaning arm, more in detail
  • Figures 6-8 show schematically a two-, a three- and a four- section rakearm resp.
  • the cleaning apparatus is arranged to co-operate with a separation screen and includes two carriages 2a,b (only one is shown in figure 1) which, by help of guide rollers 3, engaged with rail tracks 4, fitted to a tubular formed beam or stand 5, may be moved along the screen 1.
  • the carriages are connected to each other on a certain, adjustable distance from each other. They are moved along the screen by means of a worm gear motor, which pulls the carriages along the working path by help of a fixed roller chain.
  • the carriages 2 support the hydraulic and/or the electric/electronic equipment used to control the cleaning apparatus.
  • a hydraulic pendulum cylinder 6 is pivotably arranged at the upper part of each of the carriages 2 (of which only one is shown in figure 1) .
  • the rod pistons 7 of the pendulum cylinders 6 are also pivotably connected to the upper part of a guide 8 of the rakearm in which a cleaning element 10 is supported.
  • the lower part of the rakearm guide 8 is pivotably arranged in an attachment 9 which projects from each associated carriage 2.
  • the cleaning element 10 consists of two parallel rakearms
  • each of which consists of a number of telescopically movable sections lla,b,c etcetera with successively decreasing dimensions and which can be pulled together to one unit.
  • the uppermost section 11a consists of a square tube while the other sections have circular cross sections.
  • a rake 14 is connected to the lowest section which rake delivers objects, which has been brought up, to a collecting trench 15.
  • each rakearm guide 8 there are arranged guide rollers 16 in pairs, controlling the main section 11a of the cleaning element 10. By help of these guide rolls 16 the main sections 11a may move freely up and down hanging in a wire fixed e.g. at the bottom of the rakearm guide 8.
  • a hydraulic cylinder 17 is fixed to the lower part of each rakearm guide 8 and is located, at some, distance from and parallel to the rakearms 24 respectively.
  • the hydraulic cylinders 17 are longer than the rakearm guides 8 and project up above these.
  • the hydraulic cylinders 17 follow hereby the angle movements of the rakearm guides 8.
  • pulleys 19 At each upper part of the rod piston 18 are arranged pulleys 19, each of which consists of two wire guides 20, 21.
  • a wire 22 runs from a first wire attachment in the upper- part of each rakearmguide 8 up over the first wire guide 20 located at the upper part of the rod piston 18, thereafter down and around a second, lower wire guide 23 arranged at the upper part of the rakearmguide 8, thereafter again up and over the third wire guide 21 and finally down to a second wire attachment located at the lower part of the main section 11a of the rakearms 24 respectively.
  • the gear change between the main sections 11a of the rod pistons 18 and the rakearms 24 is therefore 1:4.
  • the movements of the rakearm 24 in vertical direction may also be executed by arranging, at their lower parts roller chains, which by rollers may pass driven (e.g. by hydraulic engines) chain wheels mounted in the rakearm guides 8 and thereafter via other rollers up to the upper ends of the rakearms 24.
  • FIG 2 a cleaning element 10 from the front.
  • the rakearms 24 are firmly connected to each other by means of support elements in the form of horizontally arranged cross springers 28 in order to achieve that both rakearms 24 move essentially parallel.
  • adjustable elements 29, which for example may consist of rigging screws the rakearms 24 are fixed, preferably parallel, in respect to each other.
  • each of the rakearms 24 consists of two sections 11a and lib, which sections are manoeuvred by means of a chain 40, - the end of which is firmly arranged in an attachment 32, whereby it passes a first chain wheel 33, and run down through the inner part of the sections 11 to the upper part of the section lib, where the second end of the chain 40 is firmly attached.
  • the rakearm 24 consists of three sections 11a, lib and lie according to figure 7, the first two. sections 11a and lib are manoeuvred in the same way as the sections in figure 6, while the third section lie is manoevred by help of a second chain 41 which is fixed to an attachment 42 located on the pulley 31.
  • the chain 41 is placed over the chain wheels 34, 35, whereby it runs through the inner parts of the main sections 11a down to the third section lie where it is fixed at its upper part.
  • the rakearm sections 11a,b and c may be telescopically moved up and down along the screen 1, whereby all sections 11a, b and c in every moment are essentially proportional as much projected in respect to each other.
  • two rakearms 24 furthermore are arranged in "tandem" and co-operate, a maximal stability during the whole work procedure is obtained.
  • each rakearm 24 consists of totally four sections, i.e. one further section lid has 5 been added to the three sections 11a, ,c earlier mentioned in figure 7.
  • the pulley 31 has of course been completed by further chain wheels 36, 39 and a further chain 44 in order to control the additional section.
  • the chain 44 is.with its one end fixed at the earlier mentioned attachment 32 which 0 is arranged at the upper end part of the support 8 and runs over two chain wheels 36, 37 arranged in the pulleys 31, and an additional chain wheel 38 arranged on the rakearm guide 8.
  • the total gear change of the above disclosed block devices in combination is 1:8, 1:12, 1:16 respectively, which therefore results in that a displacement of the rake 14 of eight, twelve, sixteen meters respectively is obtained when the rod pistons 18 of the hydraulic cylinders 17 are displaced one meter, depending on whether the number of sections is two, three or four.
  • cleaning apparatuses of this type may be mentioned that space, especially in vertical direction, is saved and that the centre of gravity of the apparatus will be located low, also when the cleaning apparatus is in its "rest position", that is when the cleaning element 10 is telescoped, which result in that the cleaning apparatus will be safe to operate and easier to install in limited spaces, when bulky reinforcements of the construction are not necessary to make. Owing to the small dimensions of the cleaning apparatus in relation to its range, the pressure from among others the water which passes by is decreased.

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)
  • Sewage (AREA)

Abstract

Un appareil de nettoyage d'écrans séparateurs, conçu pour être utilisé dans des conduites d'alimentation de turbines en eau, dans des prises d'eau de turbines, dans des prises d'eau d'installations d'épuration d'eaux usées et autres installations similaires, comprend un élément nettoyeur mobile au moins le long de l'écran à la verticale, et monté sur un support ou un chariot. L'objectif de la présente invention consiste à créer un appareil de nettoyage relativement souple et facile à manier, peu volumineux et capable d'opérer en association avec un élément nettoyeur mobile jusqu'à de grandes profondeurs, sans que le support ou le chariot soient soumis à des charges inégales préjudiciables ou sans que l'appareil de nettoyage doive être démesurément étendu. Ce problème a été résolu en dotant l'élément nettoyeur (10) d'au moins deux bras râcleurs (24) essentiellement parallèles et reliés l'un à l'autre de façon fixe à l'aide d'éléments de raccordement (25-29). Les bras râcleurs (24) sont en outre constitués de sections télescopiques (11) dont les extrémités sont reliées deux à deux par des traverses (28).
EP19830901122 1982-03-29 1983-03-29 Appareil de nettoyage d'ecrans separateurs Withdrawn EP0104222A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8201965A SE8201965L (sv) 1982-03-29 1982-03-29 Rensningsmaskin for avskiljningsgaller
SE8201965 1982-03-29

Publications (1)

Publication Number Publication Date
EP0104222A1 true EP0104222A1 (fr) 1984-04-04

Family

ID=20346384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830901122 Withdrawn EP0104222A1 (fr) 1982-03-29 1983-03-29 Appareil de nettoyage d'ecrans separateurs

Country Status (3)

Country Link
EP (1) EP0104222A1 (fr)
SE (1) SE8201965L (fr)
WO (1) WO1983003372A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2304600A1 (de) * 1973-01-31 1974-10-03 Passavant Werke Rechen zum reinigen von mit feststoffen verschmutztem wasser
SE420113B (sv) * 1978-03-28 1981-09-14 Kenneth Vinberg Anordning for rensning av vattenintagsgaller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8303372A1 *

Also Published As

Publication number Publication date
SE8201965L (sv) 1983-09-30
WO1983003372A1 (fr) 1983-10-13

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840301