EP0056531A1 - Schüttelrost für feste Brennstoffe - Google Patents

Schüttelrost für feste Brennstoffe Download PDF

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Publication number
EP0056531A1
EP0056531A1 EP81400050A EP81400050A EP0056531A1 EP 0056531 A1 EP0056531 A1 EP 0056531A1 EP 81400050 A EP81400050 A EP 81400050A EP 81400050 A EP81400050 A EP 81400050A EP 0056531 A1 EP0056531 A1 EP 0056531A1
Authority
EP
European Patent Office
Prior art keywords
grid
chassis
vibrations
bars
hearth
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Withdrawn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
EP81400050A
Other languages
English (en)
French (fr)
Inventor
Jean Mis
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.)
ETUDES TECHNIQUES ET REALISATIONS CDF INGENIERIE
Original Assignee
ETUDES TECHNIQUES ET REALISATIONS CDF INGENIERIE
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 ETUDES TECHNIQUES ET REALISATIONS CDF INGENIERIE filed Critical ETUDES TECHNIQUES ET REALISATIONS CDF INGENIERIE
Priority to EP81400050A priority Critical patent/EP0056531A1/de
Publication of EP0056531A1 publication Critical patent/EP0056531A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F27B9/2453—Vibrating conveyor (shaker hearth furnace)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H9/00—Revolving-grates; Rocking or shaking grates
    • F23H9/04—Grates rocked as a whole

Definitions

  • the invention relates to an inertia hearth for solid fuels comprising a horizontal or inclined grid subjected to vibrations and / or tremors generated by a vibration generator and / or directed tremors, with a slight oblique deviation upwards, substantially in the direction desired progression of solids on the grid and having a grid support frame.
  • the object of the invention is to propose a new inertia hearth which does not have the above drawbacks and which can be adapted, with a minimum of modifications to all types of existing ovens, and in particular to refuse combustion ovens, in with good longevity and offering new advantages, such as a controlled distribution of combustion air through the grate and no transfer of dynamic forces in the oven structures, the hearth resting independently on the floor.
  • the chassis is rigid and it is made up of a vibrating and / or shaking chassis, elastically mounted, on which is directly mounted the vibration generator and / or shaking and the grid. is fixed in contact with the chassis at at least two points, at least one of which includes a friction damper.
  • the bars are each linked to the chassis by at least one damping connection means constituted by an attachment arrangement. at friction ensuring a friction force greater than the action force or inertial reaction of the bars to be driven or driven in vibration and / or jolts.
  • the assembly can withstand the relative displacements necessary to avoid the stresses due to thermal expansions, but it behaves dynamically like a rigid body with a single center of inertia free of its own resonance.
  • chassis comprises upper crossmembers by means of which, taken two by two, each bar is linked by a friction damper.
  • each bar extending from one end to the other of the grid is constituted by several elements arranged contiguous end to end and of which one end, at least, is frictionally linked to the chassis by means of the sleepers. In this way the bars are easily mounted and dismountable - and light to handle.
  • each bar prefferably has a general inverted U shape and for the bars to be joined in parallel and to have grooves on their junction faces constituting air intake vents.
  • the bars have attachment ears, by which they are clamped in contact with the chassis by means of connecting rods, constituting tie rods, and springs with large clamping force, such as stacks of Belleville washers.
  • the chassis consists of a partitioned box for supplying and distributing combustion air, with upper crosspieces arranged at least in line with each partition.
  • the hearth is advantageous for the hearth to be associated with a programmed and / or programmable digital control for intermittent start-up of the vibration and / or jerk generator device and for the start control for the generator device to be associated with a blast stop control. air through the grid and vice versa. This way we obtains a good homogenization of the layer in ignition, which is important in particular in the case of combustion of garbage or waste, better elimination at the end of combustion, as well as the limitation of the flights of incandescent particles or not.
  • the invention also offers the advantage of allowing easy elimination by vibrations and / or shaking of the solid particles having passed through the grid.
  • the bottom of the box is shaped. as a collector for transporting and evacuating solid particles, since it is subjected by construction to vibrations or jolts giving a suitable direction of progression to any particle collected.
  • any transverse partitions must be open in their zone adjoining the bottom of the box.
  • An inertia hearth according to the invention consists, as a whole, of a rigid box 2 elastically mounted by supports 6 on springs 7 fixed to the ground by means of seat plates 8 sealed to the ground.
  • two excitratices 12 of vibrations or jolts are fixed.
  • the top of the box 2 is occupied by a grid 1, the constitution and the method of attachment of which will be explained in more detail, and whose inclination relative to the horizontal makes an acute angle ⁇ , so that the grid is inclined on the bottom from right to left in Figures 1 and 2.
  • the general direction of the vibrations or tremors makes an acute angle / 3 with the grid plane and is directed to left upwards in FIGS. 1 and 2.
  • the directed vibrations imprinted on the casing are so that they facilitate the desired progression of the fuel from right to left according to FIGS. 1 and 2.
  • the casing comprises crosspieces 15 upper which serve at the same time to support the grid 1, and, to ensure a suitable air distribution under the grid, the box 2 comprises transverse partitions 9 delimiting compartments supplied with air by openings 14 made in the side walls of the box.
  • These openings 14 can receive pulsed air through flexible connections. Depending on their lateral or lower position, these openings also receive a suitable protection device against falls of sieved products in the flexible connector.
  • the bars of the grid 1 are made up of longitudinal elements end to end and side by side as shown in FIG. 3, for cooling the grid by water tubes and, in FIG. 4, for cooling the grid. by air.
  • Each bar element 20, shown in FIG. 3, has the general shape of an inverted U carrying, in the vicinity of each of the ends of its wings 21, a stirrup 22 projecting downward constituting an ear 23 with two notches 24.
  • two notches 24 transversely opposite can receive a lifter 25 for a tie rod 26 on which a spring box 27 can be mounted for Belleville washers 28 which can be tightened by a pressure washer 29, a nut 30 and a lock nut 31 on the threaded end 32 of the tie rod 26.
  • the latter Before engaging the spring box 27 on the tie rod 26, the latter is introduced into a through hole 33 of a horizontal wing. an angle 35 extending along the cross member 15 of which it is integral.
  • a water circulation tube 40 which, except to the right of the leftmost cross member 15, can come to be blocked between grid element 20 and cross member 15 and whose mounting will be explained later in detail.
  • the length of the longitudinal elements 20 corresponds to the spacing between crosspiece 15, so that the ends of two end-to-end elements join at the right of one of the crosspieces 15 and that each crosspiece maintains, by their ears 23, the respective ends of each of these two elements.
  • edges 36 In the edges 36 are provided vertical grooves 37 extending on the outer face of the wings 21 to constitute air intake vents through the grid formed by the bars which are joined longitudinally and in direction transverse.
  • the air intake thus produced through the vents can be modulated by acting on the quantity of air admitted separately into each compartment by means of any conventional device located before the flexible connector.
  • water circulation tubes 40 are mounted tight between the bars 20 and the sleepers 21. We will now show how these tubes 40 are mounted at their ends. At the lowest part of the hearth, on the left in the figures, the tubes 40 are bent in an S shape downwards and thus move away from the grid plane to connect each to a single transverse collector 3 fixedly mounted on the box 2
  • the manifold 3 is connected to a water supply circuit by means of flexible pipes connected to its inlet fittings .39.
  • the tubes 40 open straight into another single transverse manifold 4 mounted frictionally on friction boxes 5 integral with the casing 2.
  • Outlet fittings 45 allow the connection of the manifold 4 by flexible pipes to the general circuit of a boiler or to a water use circuit if necessary.
  • the friction assembly comprises a friction pad 43 mounted between the upper face of the manifold 4 and the upper branch of each friction box and a friction pad 44 mounted on an elastic device interposed between the underside of the manifold 4 and the lower branch of each friction box.
  • the clamping force of the Belleville washers 28 of the bar fixings and of the friction pads 44 is adapted so that the adhesion connection ensures a sufficient friction force between the bars-tube-cross-member and collector-friction box so that the vibrations and / or shaking of the hearth does not cause any sliding between the tubes and / or the bars and the box, but weak enough to yield longitudinally to the stresses of thermal expansion of the tubes and / or the bars. In this way, parasitic resonances are avoided, but at the same time unwanted deformations of the pipes and / or bars, that is to say of their elements, are avoided.
  • the grid elements 10 of FIG. 4 are provided for a grid without bundles of water tubes. Their construction differs from the previous ones only by the greater height of their wings 21 and by the fact that the ears 23 are cut out in these wings instead of projecting downwards. By using the same assembly as previously, it is the ends of the wings 21 which will bear directly on the crosspieces 15 on which they will be directly mounted with friction, which allows them to withstand expansion play, while avoiding movement movements by report to the housing, which could be due to vibrations and / or jolts alone. The assembly is the same on the leftmost cross member of Figure 3.
  • the on and off periods of the exciters 12 are controlled by a programmed or programmable digital control 50 and that this same control stops the blowing of air, if there is one, during the application of the vibrations. and / or shakes in the hearth.
  • the invention very simply solves the problem of removing particles which have fallen through the grid. It suffices that the bottom 11 of the box has the general shape of a chute and is slightly inclined downward to the left (FIG. 1) so that it serves as a transport and evacuation collector thanks to vibrations and / or jolts. it undergoes as part of the box.
  • the partitions 9 must have low openings 16 allowing the passage of the particles on the bottom 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jigging Conveyors (AREA)
EP81400050A 1981-01-16 1981-01-16 Schüttelrost für feste Brennstoffe Withdrawn EP0056531A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81400050A EP0056531A1 (de) 1981-01-16 1981-01-16 Schüttelrost für feste Brennstoffe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81400050A EP0056531A1 (de) 1981-01-16 1981-01-16 Schüttelrost für feste Brennstoffe

Publications (1)

Publication Number Publication Date
EP0056531A1 true EP0056531A1 (de) 1982-07-28

Family

ID=8188496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400050A Withdrawn EP0056531A1 (de) 1981-01-16 1981-01-16 Schüttelrost für feste Brennstoffe

Country Status (1)

Country Link
EP (1) EP0056531A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100434800C (zh) * 2007-01-31 2008-11-19 袁水成 旋转水冷炉排锅炉

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE383182A (de) *
DE673911C (de) * 1936-04-12 1939-03-31 Johannes Ruprecht Feuerungsrost mit einem dem Verbrennungsrost vorgeschalteten, mechanisch bewegten Rost
FR1010462A (fr) * 1948-08-20 1952-06-11 Fr De Const Mecaniques Soc Grille perfectionnée à secousses pour chaudières et autres appareils de chauffage
FR1085148A (fr) * 1953-06-20 1955-01-27 Central De Chauffe Rationnelle Procédé de chauffe au charbon à grande puissance et installation réalisant la mise en oeuvre de ce procédé
US2913912A (en) * 1954-07-20 1959-11-24 Steinmueller Gmbh L & C Fuel feed regulation for vibratory combustion grates
US3444831A (en) * 1967-08-24 1969-05-20 Combustion Eng Furnace grate and air supply therefor
FR1601266A (fr) * 1968-12-30 1970-08-10 Stein & Roubaix Dispositif incinerateur
US3841242A (en) * 1973-11-28 1974-10-15 C Sigg Apparatus for burning waste matter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE383182A (de) *
DE673911C (de) * 1936-04-12 1939-03-31 Johannes Ruprecht Feuerungsrost mit einem dem Verbrennungsrost vorgeschalteten, mechanisch bewegten Rost
FR1010462A (fr) * 1948-08-20 1952-06-11 Fr De Const Mecaniques Soc Grille perfectionnée à secousses pour chaudières et autres appareils de chauffage
FR1085148A (fr) * 1953-06-20 1955-01-27 Central De Chauffe Rationnelle Procédé de chauffe au charbon à grande puissance et installation réalisant la mise en oeuvre de ce procédé
US2913912A (en) * 1954-07-20 1959-11-24 Steinmueller Gmbh L & C Fuel feed regulation for vibratory combustion grates
US3444831A (en) * 1967-08-24 1969-05-20 Combustion Eng Furnace grate and air supply therefor
FR1601266A (fr) * 1968-12-30 1970-08-10 Stein & Roubaix Dispositif incinerateur
US3841242A (en) * 1973-11-28 1974-10-15 C Sigg Apparatus for burning waste matter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100434800C (zh) * 2007-01-31 2008-11-19 袁水成 旋转水冷炉排锅炉

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Inventor name: MIS, JEAN