US3783803A - Furnace construction - Google Patents

Furnace construction Download PDF

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Publication number
US3783803A
US3783803A US00260783A US3783803DA US3783803A US 3783803 A US3783803 A US 3783803A US 00260783 A US00260783 A US 00260783A US 3783803D A US3783803D A US 3783803DA US 3783803 A US3783803 A US 3783803A
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US
United States
Prior art keywords
wall portion
wall
tray
edge
combination
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 - Lifetime
Application number
US00260783A
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English (en)
Inventor
J Martin
W Martin
E Weber
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.)
GIERY DAISY A
MARTIN FEUERUNGSBAU
Martin J Feuerungsbau dt GmbH
Original Assignee
MARTIN FEUERUNGSBAU
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
Priority claimed from DE19712128998 external-priority patent/DE2128998C3/de
Application filed by MARTIN FEUERUNGSBAU filed Critical MARTIN FEUERUNGSBAU
Application granted granted Critical
Publication of US3783803A publication Critical patent/US3783803A/en
Assigned to GIERY DAISY A. reassignment GIERY DAISY A. ASSIGNMENT OF 1/2 OF ASSIGNORS INTEREST Assignors: GIERY EDWARD G. JR.
Anticipated expiration legal-status Critical
Expired - Lifetime 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

  • a horizontal trough accommodates a body of water and has two transversely spaced lateral sides one of [211 Appl' 260,783 which is provided with an edge.
  • a substantially vertical discharge chute has an upper endportion into 30 Foreign Application priority Dam which slag and other combustion residue from a fur- June 1 l 197] Germany P 21 28 998 5 nace is permitted to enter and a lower endportion with an outlet through which the residue enters into the a 52 us. c1. .Q 110/165 R 110/171 The endpmtim is .bmmded by 51 1111. C1.
  • the present invention relates generally to a furnace, and more particularly to an arrangement for discharging slag and other combustion residue originating in a furnace.
  • the pushing devices must push the combustion residue out of the trough underneath the lower edge of the chute, which for various reasons must be relatively close to the level of water in the trough, it is known to make the wall of the chute in the region of the lower edge and at that side of the chute beyond which the slag or other combustion residue is to be pushed out of the trough, yieldable.
  • a portion of the lower end wall bounding the chute is mounted pivotally so that it can yieldabout a substantially horizontal axis, in some instances being opposed by spring action.
  • one feature of the invention resides, in a furnace, in a combination comprising a substantially horizontal trough adapted to accommodate a body of water and having a first and a second lateral side with the latter having an edge.
  • a substantially vertical chute is provided having an upper end portion adapted to receive combustion residue from a furnace, and a lower end portion provided wth an outlet bonded in part at opposite sides by a first wall portion Closer to the first side of the trough and a second wall portion closer to the second side of the trough.
  • Mounting means mounts the second wall portion on the upper end portion for substantially vertical displacement, and pusher means is provided in the trough in the region of the first side and the first wall portion and is operative for pushing combusbion residue entering the cross section as a result of its vertical displacement, and
  • this can be coupled with a cover wall overlying the trough to prevent splashing, which cover wall can be connected with the vertically displaceable second wall portion so as to move with the same and to become raised as the second wall portion moves upwardly.
  • FIG. 1 is a somewhat diagrammatic vertical section through an embodiment of the present invention.
  • FIG. 2 is a kinematic representation showing the operation of the embodiment in FIG. 1.
  • the trough is identified with reference numeral 1 and will in operation be filled with a quenching liquid, usually water. It has two opposite lateral edges, the righthand one (FIG. 1) and the left-hand one, with slag or other combustion residue to be pushed out of the trough over the left-hand edge in the illustrated embodiment.
  • the trough is, of course, elongated in direction normal or substantially normal to the plane of FIG. 1.
  • Expulsion of combustion residue is effected via a pusher device 16 which is moved towards the left or towards the right by the pivoting arms 17 (one shown) which are driven in suitable manner and which perform the motion indicated by the double-headed arrow in FIG. 1.
  • the novel arrangement is used in the context of a funace, and in order to conduct slag or other combustion residue into the trough 1 from the combustion grate of such a furnace (not illustrated) there is provided an upright (more or less vertical) chute 2 whose upper end (not shown) receives the slag so that the latter can fall in the chute 2 downwardly to the outlet.
  • the chute 2 has two transversely spaced side walls 3 and 3a, of which the side wall 3 is a part of the upper portion of the chute and is stationary. It will be appreciated that the chute 2 is elongated similarly as the trough 1. The lower endportion of the wall 3a extends into the body of water in the trough 1, but the lower endportion of the wall 3 is spaced upwardly from the level of the body of water.
  • the wall 3 has a second wall portion or lower wall portion 4 which in accordance with the invention is mounted so that it can yield in upright direction, that is it can move up and down as indicated by the double-headed arrow associated with the wall portion 4.
  • the guidance for this movement can be either of the sliding type and/or it can be by means of guide rollers 9.
  • Hinge 8 connects the wall portion 4 with a cover wall 5 which extends longitudinally of the trough 1 and covers the same at the top, as illustrated, to prevent splashing or the like.
  • the cover wall 5 is mounted on arms 6 and 7 which are pivoted about stationary journals 18 and 19.
  • a piston rod 13 of a piston guided in a pressurized cylinder 12 is connected either directly or, as shown in FIG. 2, via a lever arm 14, with the arm 6, and the latter and the arm 14 are rigidly connected with one another as is evident from the illustration of the kinematic chain in FIG. 2. It is the purpose of the cylinder 12 and the piston with piston rod 13 to permanently bias the wall 5 and the wall portion 4 in downward direction, that is to the normal end position.
  • the cylinder 12 is a hydraulic cylinder, but it will be appreciated that a pneumatic cylinder could be utilized, or that springs could be employed instead.
  • the lower edge of the wall portion 4 is provided with a downwardly directed glide surface 4a which facilitates passage of the combustion residue beneath it, that is as the combustion residue passes beneath the wall portion 4 it will slide in contact with the surface 40 and will move more freely than if the wall portion 4 were simply bounded by an edge.
  • the wall 5 is provided, the latter, as well as the hinge 8, are also provided upwardly at the same time as the wall portion 4 moves upwardly, until the wall 5 reaches the position 5' with its arms 6 and 7 reaching the upper end positions 6' and 7, and the hinge 8 reaches the position 8'.
  • the opening for passage of combustion residue then approximately corresponds to the cross-section of the inlet opening of the chute 2, that is if the chunk of slag was large enough to enter the chute 2 through the inlet thereof in the first place, there is now sufficient space for it to leave.
  • the piston rod 13 it is also possible to displace the piston rod 13 not through its entire possible stroke inwardly or outwardly of the cylinder 12, but only through increments which may for instance correspond to one quarter of the maximum possible stroke. This can be achieved by permitting the escape out of the pressurized side of the cylinder of only so much pressure medium as corresponds to this incremental movement. If, after the piston rod has moved into the cylinder by an increment and has been arrested, no excessively high counterpressure developed during the next operation of the pusher 16, then the piston rod is again extended outwardly and the wall portion 4 is lowered. If, however, excessively high counterpressure acts during the next operations of the pusher 16, then the piston rod 13 is retracted by a further increment and the wall portion 4 is raised by another incremental distance.
  • FIG. 1 also shows that it is possible according to the present invention to secure a pressure container 21 on the wall portion 4, which container 21 is connected with a source of water and is provided in its lower portion with nozzles 22.
  • a pressure container 21 on the wall portion 4, which container 21 is connected with a source of water and is provided in its lower portion with nozzles 22.
  • the supply of water under pressure into the container 21 can be controlled in dependence upon the vertical movement of the wall portion 4, for instance by having the wall portion 4 operate a switch 23 as it begins to move upwardly, which in known manner opens a valve 25 via a relay 24, so that pressurized water can enter into the container 21 via flexible and/r rigid conduits which are diagrammatically shown at 26.
  • the supply of water and thereby the creation of the water curtain is advantageously maintained until the wall portion 4 returns to its lower normal position, thereby triggering the switch 23 which closes the valve 25 via the relay 24 and shuts off the supply of pressure water to the container 21.
  • the provision of such a water curtain prevents the escape of dust and hot gases out of the chute 2, or at least reduces them, as well as largely preventing the entry of infiltrated air into the chute 2.
  • the wall portion 4 as well as the wall be composed of a plurality of sections which are respectively arrayed adjacent one another in longitudinal direction of the chute and the trough, respectively.
  • Such a construction has the advantage that if a particularly high but not verywide (as seen in the direction of elongation of the chute and the trough) chunk of combustion residue is to be expelled, only one section of the wall portion 4 (and of the wall 5, if the same is present) need be raised at a time whereas the remainder can remain in place.
  • a combination comprising a substantially horizontal tray adapted to accommodate a body tiallyhorizontal tray adapted to accommodate a body of water and having a first and a second lateral side with the latter having an edge; a substantially vertical chute having an upper end portion adapted to receive combustion residue from a furnace, and a lower end portion provided with an outlet bounded in part at opposite sides by a first wall portion closer to said first side and a second wall portion closer to said second side; mounting means mounting said second wall portion on said upper end portion for substantially vertical displacement; a cover wall extending along and covering said tray; pivoting means pivotally mounting said cover wall on said second wall portion for movement therewith; and pusher means in said tray in the region of said first side and first wall portion and being operative for pushing combustion residue entering said tray from said outlet to said second side and over said edge.
  • pivoting means comprising pivotable arms supporting said cover wall and connected with said second wall portion for movement with the latter.
  • a substantially vertical chute having an upper end portion adapted to receive combustion residue from a furnace, and a lower end portion provided with an outlet bounded in part at opposite sides by a first wall portion closer to said first side and a second wall portion closer to said second side; pusher means in said tray in the region of said first side and first wall portion and being operative for pushing combustion residue entering said tray from said outlet to said second side and over said edge; and mounting means mounting said second wall portion on said upper end portion for substantially vertical displacement in response to a force exerted on said second wall portion by combustion residue being pushed towards said second side by said pusher means.
  • a combination comprising a substan- 7.
  • said biasing means comprising hydraulic means.
  • said mounting means including a pivot arm connecting said second wall portion with said upper end portion; and wherein said biasing means is connected with and acts upon said pivot arm.
  • a combination comprising a substantially horizontal tray adapted to accommodate a body of water and having a first and second lateral side with the latter having an edge; a substantially vertical chute having an upper end portion adapted to receive combustion residue from a furnace, and a lower end portion provided with an outlet bounded in part at opposite sides by a first wall portion closer to said first side and a second wall portion closer to said second side; mounting means mounting said second wall portion on said upper end portion for substantially vertical displace-- ment; dispenser means carried by by said second wall portion and having outlet nozzles directed into said tray, said dispenser means being connected with a source of water and having its receipt of water from such source controlled in dependence upon the position of said second wall portion relative to said upper end portion; and pusher means in said tray in the region of said first side and first wall portion and being operative for pushing combustion residue entering said tray from said outlet to said second side and over said edge.
  • said second wall portion and said cover wall are composed of a plurality of wall sections respectively arranged adjacent one another in longitudinal direction of said trays.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Gasification And Melting Of Waste (AREA)
US00260783A 1971-06-11 1972-06-08 Furnace construction Expired - Lifetime US3783803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712128998 DE2128998C3 (de) 1971-06-11 Schlacken-Ausschubvorrichtung für GroBfeuerungen

Publications (1)

Publication Number Publication Date
US3783803A true US3783803A (en) 1974-01-08

Family

ID=5810487

Family Applications (1)

Application Number Title Priority Date Filing Date
US00260783A Expired - Lifetime US3783803A (en) 1971-06-11 1972-06-08 Furnace construction

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Country Link
US (1) US3783803A (cg-RX-API-DMAC7.html)
JP (1) JPS555007B1 (cg-RX-API-DMAC7.html)
AT (1) AT315343B (cg-RX-API-DMAC7.html)
CH (1) CH536982A (cg-RX-API-DMAC7.html)
CS (1) CS164923B2 (cg-RX-API-DMAC7.html)
DK (1) DK129599B (cg-RX-API-DMAC7.html)
FR (1) FR2141288A5 (cg-RX-API-DMAC7.html)
GB (1) GB1391683A (cg-RX-API-DMAC7.html)
IT (1) IT956193B (cg-RX-API-DMAC7.html)
NL (1) NL159182B (cg-RX-API-DMAC7.html)
SU (1) SU530656A3 (cg-RX-API-DMAC7.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048928A (en) * 1975-09-05 1977-09-20 Johannes Josef Martin Apparatus for discharging cinders from an incinerator
US4520738A (en) * 1984-06-19 1985-06-04 Kabushiki Kaisha Takuma Device to force out incineration ash

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1207019A (en) * 1916-08-08 1916-12-05 Samuel Glover Discharging apparatus for vertical retorts.
US1662237A (en) * 1922-04-26 1928-03-13 Sanford Riley Stoker Company Ash-discharge mechanism for mechanical stokers
US2037990A (en) * 1931-12-01 1936-04-21 Martin Josef Ash removing mechanism
US3589317A (en) * 1969-03-05 1971-06-29 Von Roll Ag Method and apparatus for cooling slag coming from a combustion furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1207019A (en) * 1916-08-08 1916-12-05 Samuel Glover Discharging apparatus for vertical retorts.
US1662237A (en) * 1922-04-26 1928-03-13 Sanford Riley Stoker Company Ash-discharge mechanism for mechanical stokers
US2037990A (en) * 1931-12-01 1936-04-21 Martin Josef Ash removing mechanism
US3589317A (en) * 1969-03-05 1971-06-29 Von Roll Ag Method and apparatus for cooling slag coming from a combustion furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048928A (en) * 1975-09-05 1977-09-20 Johannes Josef Martin Apparatus for discharging cinders from an incinerator
US4520738A (en) * 1984-06-19 1985-06-04 Kabushiki Kaisha Takuma Device to force out incineration ash

Also Published As

Publication number Publication date
DE2128998B2 (de) 1975-05-28
AT315343B (de) 1974-05-27
DK129599B (da) 1974-10-28
NL7207886A (cg-RX-API-DMAC7.html) 1972-12-13
FR2141288A5 (cg-RX-API-DMAC7.html) 1973-01-19
DK129599C (cg-RX-API-DMAC7.html) 1975-04-01
JPS555007B1 (cg-RX-API-DMAC7.html) 1980-02-02
CS164923B2 (cg-RX-API-DMAC7.html) 1975-11-28
GB1391683A (en) 1975-04-23
NL159182B (nl) 1979-01-15
IT956193B (it) 1973-10-10
SU530656A3 (ru) 1976-09-30
CH536982A (de) 1973-05-15
DE2128998A1 (de) 1973-01-04

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