US3667627A - Feed arrangement for a combustion furnace - Google Patents

Feed arrangement for a combustion furnace Download PDF

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Publication number
US3667627A
US3667627A US888483A US3667627DA US3667627A US 3667627 A US3667627 A US 3667627A US 888483 A US888483 A US 888483A US 3667627D A US3667627D A US 3667627DA US 3667627 A US3667627 A US 3667627A
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US
United States
Prior art keywords
elements
inlet
feed arrangement
furnace
carriage
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
US888483A
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English (en)
Inventor
Johannes Josef Martin
Erich 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.)
Martin GmbH fuer Umwelt und Energietechnik
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 DE19681817436 external-priority patent/DE1817436C3/de
Application filed by Martin Feuerungsbau filed Critical Martin Feuerungsbau
Application granted granted Critical
Publication of US3667627A publication Critical patent/US3667627A/en
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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste

Definitions

  • the present invention relates to a feed device for feeding combustible material to large-type furnaces, in particular installations for the combustion of refuse.
  • a feed device for feeding combustible material at the lower or discharge end of a supply chute of large combustion installations, and this feed device comprises a plurality of feeding or pushing members which are stepwise superpositioned and horizontally reciprocable relative to each other.
  • the feeding or pushing members engage the combustible material, e.g. refuse, and push the same in spaced portions past the discharge edges into the combustion chamber of the furnace.
  • An object of the present invention is to overcome the above disadvantages and to provide a feed device which positively avoids undesired slippage or seepage of combustion material into the furnace independent of the angle of inclination of the supply chute with respect to the furnace and, which, also as regards moist or slippery combustibles, positively controls the periodic in-feeding of the material into the furnace.
  • Such a feed device or arrangement for feeding combustible material, eg refuse, to a combustion furnace comprises at least one upper pushing and at least one lower supporting cooperating element each having an upper surface in the region of the outlet of a supply chute and each being upwardly inclined with reference to the horizontal and towards a respective discharge edge of the elements and which faces toward the inlet of the combustion furnace.
  • the lower supporting element is stationary and ofiset with reference to the upper pushing element in direction towards the inlet of the furnace and the upper pushing element is reciprocably supported on the upper surface of the lower element.
  • a reciprocating member reciprocates the upper pushing element with respect to the lower supporting element towards and away from the discharge edge of the latter so as to displace material which has descended from the outlet of the supply chute onto the upper surface of the lower element towards and past the discharge edge of the latter and into the inlet of the furnace.
  • FIG. 1 is a vertical cross-sectional view of the present feed arrangement and illustrates the lower discharge end of a supply chute which communicates with the feed device according to the invention
  • FIG. 2 is a partial cross-sectional view of an embodiment of a pushing element according to the present invention.
  • FIG. I the feed arrangement shown is seen to be associated and cooperating with the lower or discharge end of a supply chute 1 for the supply of combustible material which is to be gradually or stepwise fed by the feed arrangement to a furnace 6,
  • the feed arrangement is seen to comprise a first upper inclined pusher member 2 which, in the direction indicated by the arrow 2', is lengthwise reciprocably movable relative to and with its sliding end supported on a stationary correspondingly inclined restraining element 3 fixedly connected with its one end to a stationary support beam 7.
  • the fixed restraining element 3 which also serves as receiving table for receiving and accumulating the combustible material from the chute 1, in turn, is supported with its other free end on a correspondingly inclined second lower pusher member 2a which, like pusher member 2, is also lengthwise reciprocably movable, however, in this instance relative to both the fixed restraining element 3 and a fixed correspondingly inclined feed table 4 in the direction indicated by the arrow 2".
  • the pusher member 2a with its free or pushing end 2b is supported on the table 4 which at its one end 4a is fixedly supported to at least one support beam 7 and with its other or discharge end 5 is supported by the structural wall 12 of a furnace 6 with which the discharge end 5 communicates in order to feed combustible material received on the table 4 to the furnace 6.
  • the table 4 may be in the form of a grate having a plurality of bars, or the like, through which non-solids of the combustible material may be discharged and/or through which dry air, or the like, may be supplied to the combustible material.
  • table 4 forms a grate
  • the individual bars are supported by the support beam 7 and the wall 12.
  • the end portion 20 of the second pusher member is seen to be coupled to a sliding carriage 8 which, in turn is movably coupled to the first pusher member 2 and, thus, forms a connecting arm between the two pusher members.
  • Shifting of the first pusher member 2 takes place in response to abutment of an abutment member 8a on the carriage 8 with the first pusher member 2,
  • the carriage 8 is movable in a first direction in which the second pusher member 2a pushingly engages the combustible material on the table 4 and in which direction the abutment member 8a engages the shoulder portion 2d of the first pusher member 2 so as to cause the latter to move in corresponding direction in which it pushingly engages the combustible material on the receiving table 3, and the carriage 8 is movable in a second opposite direction in which it slides toward the end 4a of the table 4 and in which direction the abutment member 8a engages the abutment 2e which is a nut and is threadably received on the threaded end of an adjustable spindle 2f.
  • This latter engagement of the abutment member 8a with the nut 2e causes the first pusher member to slide in the same direction as the second pusher member 2a and in which it slides towards
  • the nut 2e is spaced apart at an adjustable distance from the shoulder 2d and, consequently, the two pusher members 2 and 2a are driven reciprocably relative to each other such that after a predetermined free stoke of the second pusher member 2a, the latter will shift the first pusher member 2 in corresponding direction.
  • the carriage 8 may be conveniently driven by the driving roller members 9 which, simultaneously, support the carriage.
  • Adjustment of the free stroke of the second pusher member 2a is effected by varying the distance between the nut 2e and the shoulder 2d by means of the adjustable spindle 2f.
  • a scraper is provided to scrape off the material possibly adhering to the upper surface of the first pusher member 2.
  • This scraper 10 is self-adjustable and movable over the surface of the first pusher member 2.
  • the respective pusher members and tables are stepwise superimposed relative to each other and at an inclined angle relative to the horizontal in ascending relationship relative to the furnace 6.
  • table 4 Due to its corresponding angle of inclination, table 4 retains the combustible material until the latter is pushed over the discharge end 5 towards the furnace 6 by the second pusher member 2a.
  • the combustible material in the abovedescribed manner, is discharged from the feed arrangement and fed to the furnace in measured quantities and at desired time intervals.
  • the stationary restraining element or table 3 serves the purpose, at the one hand, to avoid sliding back of the combustible material already advanced by the first pusher member 2 toward the furnace inlet and, at the other hand, to avoid undesirable sliding movement of the first pusher member 2 which would be the case if the table 3 were slidable and would slide under the weight of combustible material received thereon and would transmit this motion to the first pusher member 2 supported thereon.
  • Such a variation of the angle of inclination may, for example, be accomplished by elevating the pusher member 2, 24 by means of sliding blocks 1 l, or the like. Also, and depending on the requirements, one or more of the elements may be individually elevated by means of, for example, the sliding blocks 11 so as to give this respective element a greater angle of inclination than the remainder of the elements.
  • a feed arrangement for feeding combustible material into an inlet of a furnace comprising, in combination, a substantially upright supply chute having a lower open end for the issuance of material to be advanced to said inlet; and feed means arranged below said open end of said chute for gradually advancing to said inlet material issuing from said lower end, said feed means comprising a plurality of stepwise superimposed elements each having an upper surface facing said lower open end and being upwardly inclined toward said inlet, and a front wall extending transverse to said upper surface and facing said inlet, means stationaryly supporting every second of said su rimposed elements and means for reciprocating the 0 er elements relative to said stationanly supported elements for pushing material which has been descended from said open end of said chute onto the upper surface of the respective element into said inlet of said furnace.
  • feed means comprise four stepwise arranged superimposed elements in which the front walls thereof are offset in direction toward said inlet, and wherein said reciprocating means is connected only to the uppermost of said elements and to the third element immediately above the lowermost of said elements said support means stationarily support said lowermost element and the element sandwiched between said reciprocating elements.
  • each of said front walls has a lower end, and wherein the lower end of the front wall of each element with the exception of the lowermost element abuts against the upper surface of the next lower element.
  • said reciprocating means comprises a carriage reciprocable for a predetermined stroke and having a front end fixedly connected to said third element, and cooperating means in the region of the other end of said carriage and on said uppermost element for reciprocating the latter through a stroke smaller than said predetermined stroke of said carriage.
  • said cooperating means comprise a pair of abutment faces spaced in the direction of the reciprocation of said carriage from each other and connected to said uppermost element for movement therewith and an abutment member fixed to said carriage and projecting between said abutment faces so as to abut against one of said faces during movement of said carriage in one direction and against the other of said faces during movement of said carriage in the opposite direction.
  • a feed arrangement for feeding combustible material into an inlet of a furnace comprising, in combination, a substantially upright supply chute having a lower open end for the issuance of material to be advanced to said inlet; feed means arranged below said open end of said chute for gradually advancing to said inlet material issuing from said lower end, said feed means comprising a plurality of stepwise superimposed elements each having an upper surface facing said lower open end and being upwardly inclined towards said inlet, and a front wall extending transverse to said upper surface and facing said inlet, and means for reciprocating said elements relative to each other for pushing material which has been descended from said open end of said chute onto the upper surface of the respective element into said inlet of said furnace; and means selectively connectable to said elements for changing the angle of inclination of the respective upper surface relative to the horizontal.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chutes (AREA)
  • Furnace Charging Or Discharging (AREA)
US888483A 1968-12-30 1969-12-29 Feed arrangement for a combustion furnace Expired - Lifetime US3667627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681817436 DE1817436C3 (de) 1968-12-30 Am unteren Ende einer Beschickungsschurre für Großfeuerungen angeordnete Brennstoff-Beschickungsvorrichtung

Publications (1)

Publication Number Publication Date
US3667627A true US3667627A (en) 1972-06-06

Family

ID=5717601

Family Applications (1)

Application Number Title Priority Date Filing Date
US888483A Expired - Lifetime US3667627A (en) 1968-12-30 1969-12-29 Feed arrangement for a combustion furnace

Country Status (7)

Country Link
US (1) US3667627A (cs)
CH (1) CH499060A (cs)
CS (1) CS171683B2 (cs)
DK (1) DK126955B (cs)
FR (1) FR2027305A1 (cs)
GB (1) GB1224280A (cs)
NL (1) NL6919496A (cs)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841241A (en) * 1973-07-12 1974-10-15 Environmental Control Prod Inc Ash removal system for incinerators
US3926302A (en) * 1973-08-02 1975-12-16 Glaus Pyle Schomer Burns & Deh Material handling and conveying device
US4545717A (en) * 1982-02-20 1985-10-08 Zimmermann & Jansen Gmbh Machine for charging a glass melting tank furnace
US8607719B1 (en) * 2009-05-01 2013-12-17 George Kuzni Feed regulator for thermostatic control
CN107327866A (zh) * 2017-07-08 2017-11-07 周庆川 锅炉托料进料装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2011344A (en) * 1930-11-17 1935-08-13 Kelly Orin Furnace
US2331907A (en) * 1938-07-27 1943-10-19 Harrington Joseph Furnace and associated feeding device
US3170577A (en) * 1961-11-03 1965-02-23 Johannes Josef Martin Fuel charging apparatus for large furnaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2011344A (en) * 1930-11-17 1935-08-13 Kelly Orin Furnace
US2331907A (en) * 1938-07-27 1943-10-19 Harrington Joseph Furnace and associated feeding device
US3170577A (en) * 1961-11-03 1965-02-23 Johannes Josef Martin Fuel charging apparatus for large furnaces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841241A (en) * 1973-07-12 1974-10-15 Environmental Control Prod Inc Ash removal system for incinerators
US3926302A (en) * 1973-08-02 1975-12-16 Glaus Pyle Schomer Burns & Deh Material handling and conveying device
US4545717A (en) * 1982-02-20 1985-10-08 Zimmermann & Jansen Gmbh Machine for charging a glass melting tank furnace
US8607719B1 (en) * 2009-05-01 2013-12-17 George Kuzni Feed regulator for thermostatic control
CN107327866A (zh) * 2017-07-08 2017-11-07 周庆川 锅炉托料进料装置

Also Published As

Publication number Publication date
DK126955B (da) 1973-09-03
CS171683B2 (cs) 1976-10-29
DE1817436B2 (de) 1975-08-28
FR2027305A1 (cs) 1970-09-25
GB1224280A (en) 1971-03-10
NL6919496A (cs) 1970-07-02
CH499060A (de) 1970-11-15
DE1817436A1 (de) 1970-10-29

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