EP0186731B1 - Auxiliaire pour l'évacuation des résidus de combustion des installations de combustion, en particulier des incinérateurs - Google Patents

Auxiliaire pour l'évacuation des résidus de combustion des installations de combustion, en particulier des incinérateurs Download PDF

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Publication number
EP0186731B1
EP0186731B1 EP85110799A EP85110799A EP0186731B1 EP 0186731 B1 EP0186731 B1 EP 0186731B1 EP 85110799 A EP85110799 A EP 85110799A EP 85110799 A EP85110799 A EP 85110799A EP 0186731 B1 EP0186731 B1 EP 0186731B1
Authority
EP
European Patent Office
Prior art keywords
auxiliary apparatus
shield
piston
front surface
combustion residues
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
Application number
EP85110799A
Other languages
German (de)
English (en)
Other versions
EP0186731A3 (en
EP0186731A2 (fr
Inventor
Walter Brüngger
Peter Anton Cerny
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.)
Von Roll AG
Original Assignee
Von Roll AG
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 Von Roll AG filed Critical Von Roll AG
Publication of EP0186731A2 publication Critical patent/EP0186731A2/fr
Publication of EP0186731A3 publication Critical patent/EP0186731A3/de
Application granted granted Critical
Publication of EP0186731B1 publication Critical patent/EP0186731B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/01021—Removing ashes from the ash pit using reciprocating means, e.g. pushers

Definitions

  • the invention relates to an auxiliary device for discharging combustion residues in combustion plants, in particular waste incineration plants, with a trough into which the combustion residues are fed via a chute, a movable piston for conveying the combustion residues from the trough to a discharge chute and at least one in a side wall of the trough arranged, provided with a door opening for inspection and maintenance of the tub.
  • Devices of this type are known for example from DE-A-2 739 396 and DE-B-2 539 615. With these devices, the discharge of the combustion residues from the trough to the chute by means of the piston is only possible if the chute is sufficiently filled with combustion residues. Only then, after each stroke of the piston, can sufficient combustion residues reach the trough from the chute to fill up the piston displacement there and form a plug that is conveyed to the chute during the next stroke. In the facilities mentioned, the combustion residues can only be conveyed through the chute if the chute is sufficiently filled with combustion residues.
  • the object of the invention is to eliminate the disadvantages mentioned and to provide a device of the type mentioned at the outset, which does not have to be shoveled by hand through the maintenance opening even if the chute is incomplete or insufficiently filled.
  • the device according to the invention is characterized by the features specified in claim 1.
  • Advantageous developments of the invention result from the dependent claims.
  • a piston 5 pushes the combustion residues 1 with its front surface 6 to a chute 7.
  • the piston 5 is shown in its retracted position, in which it largely opens the opening 4, i.e. in this position of the piston 5, the opening 4 leads to the space in the tub 3 in front of the front surface 6 of the piston 5.
  • the stroke of the piston 5 to its extended position leads the front surface 6 approximately to the point where the tub 3 merges into the chute 7, i.e. approximately below the wall 8 of the chute 2 which is the most distant from the piston 5.
  • the chute 2 is complete and the walls 3 are largely empty, for example because the device is installed in a waste incineration plant and the waste supply to the combustion plant has been interrupted. It can be seen that with each stroke of the piston 5 only combustion residues falling back from the chute 7 into the trough 3 are detected by the front surface 6 of the piston 5, and that the plug 9 from combustion residues is essentially stationary. In order to eject the plug 9 through the chute, the measures described below are taken.
  • a shield 10 which can be in one piece or in several parts and, for example, consists of two parts 11, 11 'placed one above the other, is placed through the opening 4 in front of the front surface 6 of the piston 5. If the parts 11, 11 'are approximately the same height, each of the parts covers approximately the front surface 6 of the piston 5, so that the front surface 12 of the shield 10 is approximately the same width is twice as high as the front surface 6 of the piston 5.
  • Each part 11.11 ' can be introduced into the tub separately through the opening 4 or through the opposite opening, or, as shown in FIG. 1, the opening 4 can be dimensioned in this way be that the parts 11, 11 'already assembled to form a plate 10 can be inserted together into the tub.
  • the two parts 11, 11 'are designed as rectangular, laterally open hollow profiles.
  • the superimposed walls of the parts 11, 11 'to be connected are each accessible from the inside of these parts, they can be provided with corresponding holes and fastened to one another by means of screws or equivalent fastening means 13.
  • the piston 5 pushes the shield 10 into position 10 '. It is then possible to hold the shield 10 in position 10 'with the locking devices described below, while the piston 5 is returned to its retracted position.
  • the shield 10 is then supported on the front surface 6 of the piston 5 with the adjusting devices or adjustable support described below, for example here with push rods 14, so that a renewed extension of the piston 5 pushes the shield 10 into position 10 ".
  • the procedure can be repeated with the help of longer push rods 14 ', so that the shield 10 is finally pushed through the chute 7.
  • the shield 10 pushes the combustion residues which form the plug 9 in front of them or each time they are extended In this way, the chute can be emptied in batches. Since the parts 11, 11 'can be inserted into the tub 3 through the opening 4 by means of conventional mechanical lifting and conveying devices, the device described avoids that workers have to step into the tub to shovel it empty.
  • the adjustable support is designed as a mechanically adjustable arrangement of push rods, denoted overall by 15, which essentially consists of two screw parts 16, 16 ′ and a screw nut part 17.
  • One of the threads 18, 18 'of the screws 16, 16' is provided on the right nut part 17 with two opposing threads.
  • Devices of this type are known as adjustable tensioning or pressure devices and the adjustable support described here is designed according to the same principle, but in a stronger version which allows the thrust of the piston 5 to be transmitted to the shield 10.
  • the adjustable support is a total designated 19 lifting cylinder which, for example, as shown, is designed as a double telescopic tube and can be actuated pneumatically or hydraulically by means not shown, that is to say by pressure of a fluid.
  • the adjustable support is also a lifting cylinder, which is generally designated 20 and, as shown for example, is double-acting and can be actuated by pneumatic or hydraulic means indicated by the connecting pieces 21, 21 '.
  • the adjustable support shown schematically in FIG. 5 essentially consists of two push rods 23, 23 'connected by a worm gear 22. As is also shown schematically, these are supported by tabs 24, 24 'on the front 6 of the piston 5 or on the parts 11, 11' of the shield 10.
  • the worm drive 22 is actuated, for example, by means of the crank 25.
  • the adjusting device or adjustable support is used and actuated in such a way that the plate 10, which is brought into position 10 ′, for example, by the extension of the piston 5, is supported on the front face 6 of the piston 5 after the piston 5 has moved back, so that the plate 10 is driven into position 10 "by the next extension of the piston 5.
  • FIGS. 6 to 10 In order to hold the shield 10 in the position reached, such as 10 ′ or 10 ′′ during the retraction of the piston 5, the locking devices shown schematically in FIGS. 6 to 10 can be used, for example.
  • a push rod 14 and a wall 26 of the chute 7 are partially and schematically shown, the wall 26 of the chute 7 and the wall 8 of the chute 2 are, at least on their side facing the combustion residues 1, continuously merging areas of the same flat wall 6 is an automatic clamping device 27 based on the principle of the eccentric, which is rotatably arranged on part 11 of the shield 10 and is pressed, for example, by spring force onto the wall 26.
  • This clamping device 27 allows the shield 10 to be advanced when extending the piston 5, however, resists sliding back d es shield 10 during the retraction of the piston 5.
  • a similar clamping device is arranged on the opposite side of the shield 10 for clamping onto the opposite wall of the chute, so that the shield 10 is held on both sides of the walls.
  • the clamping effect is achieved by a lifting cylinder 28 attached to the part 11 pressing one or more brake pads 29 against the wall 26 when it is not shown means is operated hydraulically or pneumatically.
  • FIG. 7 A variant of the design of the locking device according to FIG. 7 is shown schematically in the left half of FIG. 8, in which the force exerted by the lifting cylinder 28 is transmitted to the brake pads 29 via an angled lever 31 articulated on the bracket 30.
  • a variant of the design of the locking device according to the left half of FIG. 8 is shown schematically in the right half of FIG. 8, in which the force exerted by mechanical means on the brake pads 29 is transmitted via an angled lever 31 and by a worm drive 32 originates, which can be operated, for example, hydraulically or pneumatically or, as shown, by a crank 33.
  • the force exerted on the brake linings 29 comes from a worm drive 32 as in the design described above.
  • the force is transmitted via a push rod 34 whose length can be adjusted by the worm drive 32 and which is guided in slide bearings 35, 35 'arranged on part 11 of the shield 10.
  • a rail 36 designed as a rack is arranged on the wall 26 parallel to the direction of movement of the part 11 and on the part 11 a locking device 37 provided with a pawl, the pawl with the rack are engaged.
  • the rail 36 is a perforated rail and the locking device 37 is provided with a pin which can be inserted into the holes in the perforated rail.
  • the first variant works on the riddle principle and allows the shield to advance, but prevents it from sliding back.
  • the lock must be released every time the shield is to be propelled again by a piston stroke.
  • a locking device is of course only necessary in those cases where there is a risk of the plug of combustion residue falling back. Otherwise they can be omitted.
  • the shield 10 can also be made of wood, e.g. B. consist of railway sleepers. Like. In this case, pushing should preferably be carried out with spacers that are inserted between the piston and the shield. If the shield 10 falls back into the starting position, it can be pushed forward again through side inspection openings using chisels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)

Claims (14)

1. Dispositif auxiliaire pour l'évacuation de résidus de combustion d'installations de combustion, en particulier d'incinérateurs, comportant une cuve (3) dans laquelle les résidus de combustion sont acheminés par une descente (2), un piston (5) mobile pour l'acheminement des résidus de combustion depuis la cuve vers une trappe d'évacuation (7), et au moins une ouverture (4) d'inspection et d'entretien de la cuve, placée dans une paroi latérale (4') de la cuve, pourvue d'une porte, caractérisé par un bouclier (10) placé devant la face frontale du piston (5), qui peut être introduit dans la cuve (3) par l'ouverture (4), ainsi que par un appui réglable (15, 19, 20, 22), pour l'appui du bouclier (10) sur le piston (5).
2. Dispositif auxiliaire selon la revendication 1, caractérisé en ce que le bouclier (10) est constitué de plusieurs parties (11, 11 ) pouvant être assemblées.
3. Dispositif auxiliaire selon la revendication 2, caractérisé en ce que le bouclier (10) est en deux parties, la face frontale de chaque partie (11, 11') étant semblable à la face frontale (6) du piston (5) et la face frontale (12) du bouclier assemblé étant deux fois plus haute que la face frontale du piston, pour une même largeur.
4. Dispositif auxiliaire selon la revendication 2 ou 3, caractérisé en ce que les parties (11, 11 sont des profilés creux parallélépipédiques, ouverts latéralement.
5. Dispositif auxiliaire selon l'une des revendications 1 à 4, caractérisé en ce que l'appui réglable (15) est constitué d'une partie d'écrou (17), de laquelle ressortent des deux côtés, des barres de pression (14, 14') à filetage (18, 18') en sens opposé.
6. Dispositif auxiliaire selon l'une des revendications 1 à 4, caractérisé en ce que l'appui réglable est un double tube téléscopique.
7. Dispositif auxiliaire selon l'une des revendications 1 à 4, caractérisé en ce que l'appui réglable est constitué d'un vérin (20) agissant des deux côtés.
8. Dispositif auxiliaire selon l'une des revendications 1 à 4, caractérisé en ce que l'appui réglable est constitué de deux barres de pression (23, 23'), reliées à un mécanisme à vis sans fin (22).
9. Dispositif auxiliaire selon l'une des revendications 1 à 8, caractérisé en ce que le bouclier (10) est en bois, et en ce qu'on le repousse au moyen de pièces de bois d'écartement.
10. Dispositif auxiliaire selon l'une des revendications 1 à 9, caractérisé en ce qu'un dispositif de fixation destiné à fixer le bouclier (10) sur les parois (26) de la trappe (7), est disposé sur le bouclier (10).
11. Dispositif auxiliaire selon la revendication 10, caractérisé en ce que le dispositif de fixation est un dispositif de serrage (27) automatique qui est placé de manière excentrée sur le bouclier (10).
12. Dispositif auxiliaire selon la revendication 10, caractérisé en ce qu'un dispositif de fixation est constitué par au moins une garniture de frein (29) pouvant être pressée par un vérin (28) contre la paroi (26).
13. Dispositif auxiliaire selon la revendication 10, caractérisé en ce qu'un dispositif de fixation est constitué d'au moins une garniture de frein (29) pouvant être pressée par des moyens mécaniques (32,31; 32, 34) contre la paroi (26).
14. Dispositif auxiliaire selon la revendication 10, caractérisé en ce qu'un dispositif de fixation est constitué d'au moins un rail (36) placé contre la paroi (26) et d'un dispositif de blocage (37) placé sur la partie (11) du bouclier (10), lesquels dispositifs sont en prise entre eux.
EP85110799A 1984-09-12 1985-08-28 Auxiliaire pour l'évacuation des résidus de combustion des installations de combustion, en particulier des incinérateurs Expired EP0186731B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4358/84 1984-09-12
CH4358/84A CH664617A5 (de) 1984-09-12 1984-09-12 Hilfseinrichtung zum austragen von verbrennungsrueckstaenden bei feuerungsanlagen, insbesondere muellverbrennungsanlagen.

Publications (3)

Publication Number Publication Date
EP0186731A2 EP0186731A2 (fr) 1986-07-09
EP0186731A3 EP0186731A3 (en) 1987-01-14
EP0186731B1 true EP0186731B1 (fr) 1989-12-06

Family

ID=4274606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110799A Expired EP0186731B1 (fr) 1984-09-12 1985-08-28 Auxiliaire pour l'évacuation des résidus de combustion des installations de combustion, en particulier des incinérateurs

Country Status (5)

Country Link
US (1) US4625660A (fr)
EP (1) EP0186731B1 (fr)
JP (1) JPS6172914A (fr)
CH (1) CH664617A5 (fr)
DE (1) DE3574613D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626656B1 (fr) * 1988-01-29 1990-07-13 Traitement Indl Residus Urbain Cendrier de foyer de chaudiere avec un caisson d'extraction aise a debourrer
US4987837A (en) * 1990-01-02 1991-01-29 Detroit Stoker Company Siftings removal device
DE4301619A1 (de) * 1993-01-22 1994-07-28 Babcock Energie Umwelt Vorrichtung zum Austragen von Asche
US6830000B2 (en) * 2003-04-04 2004-12-14 Mendive Corporation Automatic firepot cleaning system
US20090151609A1 (en) * 2007-12-15 2009-06-18 Hoskinson Gordon H Incinerator with pivoting grating system
JP6823753B1 (ja) * 2020-08-04 2021-02-03 三菱重工環境・化学エンジニアリング株式会社 灰押出装置の清掃具
JP7391260B1 (ja) * 2023-08-09 2023-12-04 三菱重工環境・化学エンジニアリング株式会社 灰押出装置の清掃方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US946553A (en) * 1909-08-14 1910-01-18 Robert J Mitchell Locomotive ash-pan.
FR2323102A1 (fr) * 1975-09-05 1977-04-01 Martin Johannes Josef Dispositif d'evacuation de dechets pour grands foyers
DE2739371A1 (de) * 1977-09-01 1979-03-15 Ver Kesselwerke Ag Vorrichtung zum austragen von verbrennungsrueckstaenden bei feuerungsanlagen
DE2739396A1 (de) * 1977-09-01 1979-03-15 Ver Kesselwerke Ag Vorrichtung zum austragen von verbrennungsrueckstaenden bei feuerungsanlagen
JPS57105622A (en) * 1980-12-24 1982-07-01 Mitsubishi Heavy Ind Ltd Cleaning process in ash pushing device of dust incinerator facility
US4520738A (en) * 1984-06-19 1985-06-04 Kabushiki Kaisha Takuma Device to force out incineration ash

Also Published As

Publication number Publication date
EP0186731A3 (en) 1987-01-14
JPH0454131B2 (fr) 1992-08-28
US4625660A (en) 1986-12-02
EP0186731A2 (fr) 1986-07-09
CH664617A5 (de) 1988-03-15
JPS6172914A (ja) 1986-04-15
DE3574613D1 (de) 1990-01-11

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