EP0186731A2 - 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
EP0186731A2
EP0186731A2 EP85110799A EP85110799A EP0186731A2 EP 0186731 A2 EP0186731 A2 EP 0186731A2 EP 85110799 A EP85110799 A EP 85110799A EP 85110799 A EP85110799 A EP 85110799A EP 0186731 A2 EP0186731 A2 EP 0186731A2
Authority
EP
European Patent Office
Prior art keywords
shield
piston
auxiliary device
front surface
chute
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.)
Granted
Application number
EP85110799A
Other languages
German (de)
English (en)
Other versions
EP0186731B1 (fr
EP0186731A3 (en
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-OS 27 39 396 and DE-OS 25 39 615. 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 enough 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 mentioned facilities, the promotion of combustion residues through the chute is only possible if these ge with combustion residues is filled sufficiently.
  • 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 incompletely 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.
  • FIG. 1 a side view of an embodiment of the inventive device is shown schematically in section.
  • Combustion residues 1 fall from a combustion system (not shown) through a chute 2 into a trough 3, which is provided with a side wall 4 'with an opening 4 for inspection and maintenance of the trough 3.
  • the opening 4 can be closed with a door, not shown.
  • a second side wall of the tub 3 provided with an opening and a door lies opposite the side wall 4 'and is not visible in FIG. 1.
  • 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, ie in this position of the piston 5 the opening 4 leads to the room, which lies in the tub 3 in front of the front surface 6 of 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 twice as high as the front surface 6 of the piston 5 with the same width.
  • 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 such that the parts 11 that have already been joined together to form a plate 10 , 11 'can be inserted together into the tub.
  • the parts 11, 11 ' are attached to one another before or after insertion into the tub 3, for example by screwing.
  • 1 are the two Parts 11, 11 'designed as cuboid 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 described below, here for example 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 using longer push rods 14 ', so that the shield 10 is finally pushed through the chute 7. It can now be seen that the shield 10 pushes the combustion residues which form the plug 9 in front of it or pushes them forward by one stroke each time the piston is extended. In this way the chute can be emptied in batches. Since the parts 11, 11 'can be moved into the tub 3 through the opening 4 by means of conventional mechanical lifting and conveying devices, the described device avoids that workers have to climb into the tub in order to shovel them empty.
  • the adjusting device is designated as a whole by 15, mechanically adjustable arrangement of push rods, which essentially consists of two screw parts 16, 16 'and a nut part 17.
  • One of the threads 18, 18 'of the screws 16, 16' is right-handed, the other left-handed, and accordingly the nut part 17 is provided with two opposing threads.
  • Devices of this type are known as adjustable tensioning or pressure devices and the adjustment device 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 adjusting device is a lifting cylinder designated overall by 19, which, for example, is designed as a double telescopic tube as shown and can be actuated pneumatically or hydraulically by means not shown, that is to say by pressure of a fluid.
  • the adjusting device is also a lifting cylinder, which is designated overall by 20 and, as shown for example, is double-acting and can be actuated with pneumatic or hydraulic means indicated by the connecting pieces 21, 21 '.
  • the adjustment device 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 readjustment device is used and actuated in such a way that the plate 10, which has been brought into position 10 'by the piston 5 being extended, is supported on the front surface 6 of the piston 5 after the piston 5 has been moved back, so that the plate 10 is extended the next time of the piston 5 is driven into position 10 ''.
  • the locking devices shown schematically in FIGS. 6 to 10 can be used, for example.
  • a part 11 of the shield 10, a push rod 14 and a wall 26 of the chute 7 are shown partially and schematically in FIG. 6 as a bar.
  • 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.
  • the design of the locking device shown in FIG. 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 onto the wall 26 by spring force, for example.
  • This clamping device 27 allows the shield 10 to advance when the piston 5 is extended, but opposes the sliding back of the shield 10 while the piston 5 is moving back.
  • 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 Part 11 attached lifting cylinder 28 presses one or more brake pads 29 against the wall 26 when it is actuated hydraulically or pneumatically by means not shown.
  • 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 pads 29 comes from a worm drive 32 as in the embodiment described above, but here the force is transmitted via a push rod 34 which is adjustable in length by the worm drive 32 and which in on the part 11 of the shield 10 arranged slide bearings 35, 35 'is guided.
  • 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 sign 10 can also be made of wood, e.g. consist of railway sleepers or the 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
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 true EP0186731A2 (fr) 1986-07-09
EP0186731A3 EP0186731A3 (en) 1987-01-14
EP0186731B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301619A1 (de) * 1993-01-22 1994-07-28 Babcock Energie Umwelt Vorrichtung zum Austragen von Asche

Families Citing this family (6)

* 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
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
DE2739396A1 (de) * 1977-09-01 1979-03-15 Ver Kesselwerke Ag Vorrichtung zum austragen von verbrennungsrueckstaenden bei feuerungsanlagen
DE2739371A1 (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301619A1 (de) * 1993-01-22 1994-07-28 Babcock Energie Umwelt Vorrichtung zum Austragen von Asche
BE1008557A3 (fr) * 1993-01-22 1996-06-04 Babcock Energie Umwelt Dispositif d'extraction de cendres.

Also Published As

Publication number Publication date
EP0186731B1 (fr) 1989-12-06
JPH0454131B2 (fr) 1992-08-28
US4625660A (en) 1986-12-02
JPS6172914A (ja) 1986-04-15
DE3574613D1 (de) 1990-01-11
EP0186731A3 (en) 1987-01-14
CH664617A5 (de) 1988-03-15

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