Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D33/00—Filters with filtering elements which move during the filtering operation
  • B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
  • B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
  • B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
  • B01D33/0353—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements self-supporting
  • B01D33/0361—Bar screens
• • 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

• This invention concerns a machine with a mobile grid 5 for the el imination of sol id products, transported by a l iquid flow, from channels and similar.
• this invention refers to a machine of the abovement i oned type formed so as to real ise, .by means of a mobile grid combined ith a fixed grid, a transport system J_Q adapted to withdraw the sol id product from the flow of l iquid carrying it and discharge it at a higher level from where the said product is removed-
• a transport system J_Q adapted to withdraw the sol id product from the flow of l iquid carrying it and discharge it at a higher level from where the said product is removed-
• Another difficulty met in the known technology is the difficulty of realising reliable machines with a high discharge height this being due to the abovementioned difficulty regarding the poor rigidity of the supporting structure .
• a further difficulty also due to the poor rigidity of the supporting structure, consists of the width li itation and therefore the limitation of the machine's use. Furthermore this the use limitation of conventional machines is due to the fact that conventional machines a re equipped with driving means of the mobile group, that is electric motors which cannot be immersed in liquid and therefore such m.achines cannot be used in channels or similar, in which the level of the liquid is subject to considerable changes in level .
• the object of this invention is to produce a machine of the abovementi oned type which substantially eliminates the difficulties encountered with conventional machines.
• the mobile grid machine for the elimination of solid products transported by a liquid flow from channels and similar according to the present invention is characterised by the features indicated in the characterising part of claim 1, further characteristics are indicated in the dependent clai s from 2 to 12.
• FIG. 1 is a perspective view of the machine as a whole
• FIG. 1 is a perspective view of the fixed group only
• FIG. 3 is a perspective view of the mobile group only with parts removed for greater clarity
• FIG. 5 is another simplified perspective view of the tnachine as a whol e ;
• FIG. 6 is a perspective view, with parts removed for greater clarity, of an element of the mobile group and of the driving means ;
• FIG. 7 illustrates the various positions of the mobile group during a movement cycle.
• the machine indicated generally in 1 as a whole - is of the type comprising conventionally a first mobile group 2 and a second fixed group 3 of elements formed as steps so as to permit, as a consequence of the movement of the mobile group, the raising and transport from one step to the next in the sieved ateri al .
• Machine 1 as is known, is destined to be positioned in any duct and to remove the solid material transported by the liquid flowing in the duct from said liquid.
• the elements of the fixed group are joined to a supporting structure essentially composed of two lateral plates 4,4' joined by upper crossbeams 5 and lower crossbeams 5' .
• the said lateral plates 4,4' have a profile which is variable as a function of the desired incl ination and dimension of the machine.
• Elements 2 of the mobile group a re joined together by crossbeams 6 which a re in turn fixed to longitudinal members 7, 7' to which the motion is transferred by arms 8,8' on the exterior of the plates 4,4'.
• the arms 8 are made up of two elements joined together by an oscillating joint 9, while the arms 8' are al so constituted by two elements which a r e bolted together.
• the particular two-element form of the arms 8,8' al lows easy removal of the mobile group and relative elements 2 from the body of the machine 1 maintaining the position of the whole driving mechanism unchanged.
• the advantage of not having to interfere with the driving mechanism together with the use of reference keys, conventional in itself, on all the particulars of the motion transmission avoids proble s of phase displacement between the two groups and greatly reduces the servicing times for repairs and/or maintenance.
• the movement of the mobile group 2 is obtained by means of pairs of pistons 18 and 19, situated substant ally vertically and horizontally or sl ightly incl ined, respectively, hinged on inferior crossbeams 5' and of which the piston rods 18' and 19' a r e hinged to longitudinal members 7,7' .
• pairs of pistons 18 and 19 situated substant ally vertically and horizontally or sl ightly incl ined, respectively, hinged on inferior crossbeams 5' and of which the piston rods 18' and 19' a r e hinged to longitudinal members 7,7' .
• the pistons 18 and 19 are of hermetically sealed type and so these, controlled by a suitable control box 20, can operate even when immersed in l iquid thus machine 1, according to the invention, can be used in channels, or similar, in which the level of liquid varies considerably.
• each element 2 has the points 12 of the steps curved alternativel in opposite directions with respect to the plane of the said element, said curved parts having the function of breaking up any lumps and/or filaments of sieved material .
• the mobile elements 2 and fixed elements 3 have * the upper part at least from the last step equipped with a boss 13 destined to prevent the sieved material from falling down a g a i n .
• the structure of the machine 1 gets round al l the difficulties encountered in the known technol ogy .
• the use of fixed lateral plates 4,4' allows the real isation of machines which are robust and thus insensitive to hydrodynamic thrust and vibrations, of increased height and width according to necessity and without requiring the use of seal ing means.
• the hermetically sealed piston system as al ready said, can operate even when immersed allowing the mac ine to be used in any type of channel , or similar, and finally allows a remarkable energetic saving with respect to existing systems.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Extraction Or Liquid Replacement (AREA)
• Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
• Auxiliary Devices For Machine Tools (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

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Family Applications (1)

Country Status (4)

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Family Cites Families (4)

• 1991
  • 1991-03-04 EP EP19910905548 patent/EP0471818A1/de not_active Withdrawn
  • 1991-03-04 WO PCT/EP1991/000404 patent/WO1991014048A1/en not_active Application Discontinuation
  • 1991-03-04 AU AU74416/91A patent/AU626753B2/en not_active Ceased
  • 1991-03-04 CA CA 2055456 patent/CA2055456A1/en not_active Abandoned

Non-Patent Citations (1)

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