US2514657A - Incinerator with centrally supported superimposed air supply means - Google Patents

Description

3 Shets-Sheet MARTlN ET AL INVENTORS [HA/?LEE H//VN/G 5. MART//V ATTORNEY BY WAR/?E N W. INCINERATOR WITH CENTRALLY SUPPORTED SUPERIMPOSED AIR SUPPLY MEANS July ll, 1950 Filed July 25, 1946 July ll, 1950 w. s. MARTIN ET AL INCINERATOR WITH CENTRALLY SUPPORTED SUPERIMPOSED AIR SUPPLY MEANS 3 Sheets-Sheet 2 Filed July 25, 1946 INVENTORS CHARLES HEA/N/G BY WA/FRENSMARTIN f g &Qa a/.11,

ATTORNEY y 1950 w. s. MARTIN ET AL 2,514,657

INCINERATOR WITH CENTRALLY SUPPORTED SUPERIMPOSED AIR SUPPLY MEANS 5 SheetS-Sheet 3 Filed July 25, 1946 INVENTORS [HA/?1.53 HENN/G; BY WARREN 5. MARTIN ATTORNEY times.

bmast ion E Y- an. upwardl extend e. sata ona y y e ber M a are provided t suep y ai :to th Patenta& Jul y 11, 1950 .ntmmm@ TH QENTRALLY ;s

RT SUPER M Q seem( 'Warren S.` Martin, Massapequa, and; Charles H s, F

Bueerll st u or mn a, corporation of Delawar to M nse Application July 25 1946', Serial No. (386316 Qla ma e 0--=1:3.-).

This` invention relates to apparatus; for meineratingrubbish and' other like waste; material-` as is capable of being dlsposed of by incineration.

It is not uncommon. to; dispose of trash, garbage, waste paper andthe like which is, astaway 'by populated communities, by .burning this rnb.-

bish in a furnace. There are, of course, va ious types and sizes of disposaL plants but a y event. not. infrequently, a furnace is, provided within which to burn the rubbish. it; is, well known that the rubbjsh from a communityvaries in kind at different seasons and at difierent Ordinari-ly, the rubbish must be partial-ly dried or desiccated inorder to make. it bum Well. In the burning operation, the rubbish, garhage and trash need to be stirred up orstoked.` to allow .air to. get into the ple of' rubbish in the furnace note only. to support combusti'on but also to .drive off* excess moisture ordampness so that: the com bustible stufiwill burn.

'It S an object of this. inVention-to, provide an incinerator apparatus. and .stoker dla-vice so arranged as` to mechanically .stokea pile ofgrubhish 'being burned in a furnace while causing a stream 'of air to pass through the rubbish serving, to wholly or 'partially dry it while causing another stream of-.air to. pass upwardly *through a supportin& grate ontoxwhioh the partialht dried rub- 'b'sh is automatically-moved;from the pile and' on --wh i'c;h *the burning is completed. The hot gases from the combustion are utflized if deired to 'hoat the air ;going-to the turnace and. this results in increased overall .eflciency-` of the rubbish, disposaloperations.

'In accordancewith a preferred form of themcinerator apparatus thereis provided a cylinir-ically shaped fire-box haying acha ing port in itsroo a comb v ion Qham qon. aci h to which mturn i nnetecl by a suitable flue to a himney'.. 'Th fr -bo s p ded W a 'ciramar: arthhav-, n a centra openin t ac x mqd te. e h te a atehe de ic M d, the

.fire-.box upwardly through the grate and also t ugh e. st g el anisni h t t p sto e mecharism i provide@ w th. tat p a Christmas tree" head serving to har the weight reference characters.

2 into the pile. A normallyclosed ashgpitv in, .the bottom. of the fire-box, beneath the grate, also provides space for mounting a hollow .rotaltabl'e shanit of the stokermechanism and; also a staltionary shaf t concentric therewith upon which-is carried; ;the "Christmas tree' tuy'e head Ene rotating shaft of the stoker is operated a sprocket chan driven by a prime mover located outside the firebox Although the novel features which are 'believed tobe oharacteristic of the .invention WilLbepQ' 't', ed out'in the annexed claims, the inwntion t self as to. its objects and advantages. anethe manner in which it may' be carried: out may be better understood by reference to the ,follow-ing ,description taken in connection with .the accom: panying drawingsiormirg a art herof, in which:

Eig. :1 is an elevation :View in cross-section ,of an incinerator apparatus embodying the invention and ,showing the general arrangement Eig 2 is an elevation View in orossetion through the lower end of the fire-box to la er scale, showing the stoker mechanism. and tuyre head' in .great/er' detail; said View being on `line 2:2 of'Fig.-1; and` V Big. '3 is a plan View on 'line 3-3 o Eig. 2, partly broken away to .better llustratethe con# struction of the armso-the stoker m c nism.-.

Referring .now to the d'awn s, n which ik indicate co r sper ng partsthere.is shown a-fire-bqx lohaving acyl ndricasurrounding; wall I l, roof 12 and ash-pit 13:. connected by a fiue l 4- isa combustion chamber I5-m-t1 on ec e o a fin g h oh m y be conn ct d to a hi r y (n We)- 'The' fir-e box mbustion hamb r and flee .at of hr' kwork w th n a heet stee asin Thes .suppor d by l: ammember c ldme #so-. ood in eri g, rac i e 'This-t 'O cenon-action bein enea l& Well kn w th e a Eneeat' qrth fir zb xi p ov de w the 9 tral charging port IT aboge which 'sia hopper .1 .8

. 'accessible from the charging n ar level !9, .The

erkim-'inee 'anyearned@ tim j hearth 25.

An annular hearth 25 is suitably supported in the lower part of the fire-box n and the area between the peripheral outside edge of the hearth 25 and the inner surface of the cylindrical wall I I is provided with an annular grate 26. For convenience in Construction and to' facilitate re'pairs, the hearth may desirably be made in sectorshaped sections 25a and the grate in sectorshaped sections 26a. The grate sections are preferably of dump-grate type. They are mounted on a T-shaped radial supporting member !26 and may be manipulated by a grate bar !21. The ash-pit |3 is in the shape of an inverted truncated cone and terminates in an ash discharge chute 21 which is provided with a hori- Zontally slidable gate 28 (shown conventionally). When this gate 28 is closed the ash-pit provides not only a chamber to collect ashes from the grate 26 but it also serves as an air chamber, the purpose of which is later described. Ashes may,

'from time to time, be discharged from the pit by 'opening the gate 28 which is accessible from the lower floor level 29. Accessible from the inter- 'mediate floor level 30 are a number of circumferentially spaced furnace doors 3! above and doors 32 below the grate for access to the interier of the scription, termed a "Christmas tree" tuyre head. *This "Christmas tree tuyre head is designated generally by reference character 36 and provides a tuyre through which air, preferably heated, is

forced into the pile 22 of rubbish to partially dry "it before it is finally moved by the stoker outwardly onto the grate 26 for final burning.

, ,The tuyre head 36 (see Fig. 2) comprises a plurality of truncated hollow domes superimposed one above another in vertical alignment, the bottom truncated dome 31 being larger than a similar but smaller truncated dome 38 immediately above it. The dome 31 is preferably made up of two complementary half sections bolted together. These two hollow truncated domes 31 and 38 are capped by a hollow cap dome 39; The cap dome 39 is closed at its top; whereas the domes below it in vertical alignment are open at bottom and top. The three dome members 31, 38 and 39 are placed and held fixed one above v the other as shown clearly in Fig. 2, so that there is an annular air port at the bottom periphery of each. Thus, at the bottom of cap dome 39 is an annular air port 40, at the bottom of dome 38 is an annular air port 4l, and at the bottom of dome 31 is an annular air port 42. And it may be noted here that these air ports are under the lower peripheral edges of the domes each of which 'protects its air port as by an overhanging eave so that the ports can not become plugged from 'the rubbish piled in the fire box on the Christmas tree tuyre head.

The "Christmas tree" head 36is mounted on a hollow center post 43 which extends vertically through the central opening 44 of the annular This center post 43 is made in two sections: a lower section 43w and an upper section 4327 secured together by a threaded connection 33. This center post 43 is secured to a spider having radially extending supporting legs 45, the

'legs 'being welded, bolted or otherwise secured to channel irons 46 and 23 and 24. It will be'obfurther in detail hereinafter.

4 served (see Figs. 1 and 2) channel irons 46 are short lengths and eXtend from channel 23 to channel 24 and are secured thereto at their ends. Channel iron 23 has a complementary channel iron 58, the edges of their flanges abutting one another and welded to form' air conduits 92 and 92a. Channel iron 24 has a complementary channel iron 59, the edges of their flanges abutting one another and welded to form an air conduit 93, &sa which runsparallel to air conduit 92, 920,. The purpose of these air conduits is explained The combined channels 23 and 58 and the combined channels 24 and 59 extend entirely across the fire-box and are supported in its walls. Together with channels 46 they form suitable supporting frame members to support the weight of the stoker 35 and "Christmas tree" tuyre head 36. The lower end of the center post 43 rests upon a pan 41 secured to the channelirons 46 and the conduit channels 23 and 24. This pan serves to stabilize the lower end of the post against sidewise movement and also serves as a bottom closurefor the stoker air chamber 93. I

The dome 31 is provided with a spider 48 se'- cured to a ring '49 which fits over the post 43 and rests upon an annular shoulder 56 on the post 43. In like fashion, dome 38 is provided with a spider '5l secured to a ring 52 which rests'upon a shoulder 53 and'cap 39 is provided'with a spider 54 which rests upon the post; it being noted that the spider 54 is cut awayat 55'to fit down into the hollow post 43b. These superimposed dome members are securely butremovably attached to the post in any suitable manner and' as shown bolts 56 are used. V x.

Mounted for rotation beneath the stationary "Christmas tree tuyre head is the stoker' 35. It comprises a hollow truncated dome member 60, having an inturned horizontally extending annular fiange 6! at the top and also an in- -wardly extending annular fiange`62 at the bottom. Depending from this annular flange and bolted thereto, as by bolts 63, is an outer sleeve 64. It extends through the central opening'44 of the hearth. This outer sleeve 64 -is secured to a concentric hollow shaft 65 by means of a spider co-mprising fiat radial spokes' 66. The hollow shaft 65 is mounted for rotation on the center post 43 and turns on a thrust bearing '61 resting upon an annular shoulder 68 secured to the Dost. A tooth ring 69 is secured to the sleeve 64 to accommodate a 'drive chain 16 for rotatably driving the sleeve and hence the stoker 35. It may be noted here that the lower end of the sleeve rotates in an annular channel 11 provided with a suitable seal 12.

The rotatable hollow dome member 66 has 'secured thereto, as by stud bolts 13, a plurality of circumferentially spaced,' generally radially extending and rearwardly curved hollow stoker arms 14. As shown there are three such stoker arms. The interiors of these hollow stoker arms communicate with the interior of the hollow rotatable dome member 60. These arms are substantially flat on the bottom 19 and have an inclined leading face 15 and a trailing wall 16. The top of the leading face 15 extends slightly to the rear of the top' of the trailingwall 16 to provide an 'eave 11 to protect the stoker arm air'ports 18 sleeve rotates power means to rotate said sleeve assembly and hence said stoker domeand arms, means for supplying a stream of air to said grate and means including the passageway formed by said sleeves for supplying a stream of air to said tuyre head and to said stoker dome and arms, said tuyre head comprising a plurality of superimposed stationary e hollow truncated conical domes and a capping dome, arranged in vertical alignment with a common axis and spaced apart to provide annular air ports between adjacent domes, each dome being of smaller diameter at the bottom than the one below it.

3. An incinerator apparatus for burning rubbish which comprise a fire-box, a fiue connected to said fire-box for the passage of hot gases of combustion from burning the rubbish, a hearth in said fire-box having a central opening, a grate at the periphery of said hearth, a hollow rotatable stoker dome having hollow arms extending outwardly and horizontally over said hearth for stirring a pile of rubbish on said hearth, a hollow sleeve assembly connected to said stoker dome, said sleeve assembly comprising an outer sleeve depending from and rigidly secured to said rotatable stoker dome and extending downwardly through said central opening and an inner sleeve concentrically mounted in and secured to said outer sleeve, said inner and outer sleeves providing an annular air passageway into said rotatable dome, a normally closed ash-pit below said grate, a stationary tuyre head surmounting said rotatable stoker dome, a stationary post within said inner sleeve supporting said tuyre head indeendently of said rotatable dome and providing a bearing surface for said inner sleeve, power means to rotate said outer sleeve thereby to rotate said stoker dome, means including a first conduit for supplying a stream of air to said grate and means including a second conduit for supplying a stream of air to said annular passageway and thence to said stationary tuyre head, means in said fiue connected to said conduit for heating said air by utilizing the heat of the hot gases of combustion, adjustable bafile means in said first and second conduits by which the relative amounts of air passing to said grate and to said passageway may be regulated and bame means in said passageway by which the relative amounts of air passing to said hollow rotatable dome and to said tuyre head may be regulated, said tuyre head comprising a plurality of superimposed hollow truncated domes prcgressively smaller in size from bottom to top,

said domes being arranged in "Christmas tree fashion so that there is an annular space between the periphery of the bottom of each dome and the surface of the dome immediately below it.

4. A stoker and tuyre device for a rubbish burning furnace having a hearth with a central opening therein which comprises a hollow rotatable truncated dome mounted to rotate about a Vertical shaft extending through the hearth opening, hollow arms secured to and extendng outwardly from said rotatable dome and arranged to rotate in a horizontal plane over said hearth, a stationary tuyre head surmounting said rotatable dome, said tuyre head comprising a plurality of truncated tuyre domes superimposed one above another, each of said tuyre domes being smaller than the one immediately below it, said domes being vertically spaced to provide air ports between adjacent tuyre domes, a rotatable sleeve assembly comprising an outer 'sleeve fixed to and depending from said rotatable dome and an inner concentrically mounted sleeve fixed to said outer sleeve, said inner and outer sleeves extending through said opening and providing an annular passageway for air, a vertical stationary post mounted within said inner sleeve providing a vertical shaft about which said sleeve assembly rotates, said post serving to carry the weight of said stationary tuyre head and serving as a bearing surface for said inner sleeve, a thrust bearing carrying the weight of said rotatable dome and sleeves, means to rotate said sleeve assembly and hence said rotatable dome, and means to supply air to said domes through said annular passageway and thence through said ports.

5. A stoker and tuyre device for a rubbish burning furnace having a hearth with an opening therein, said stoker comprising a rotatable hollow truncated dome having an opening at its bottom and an opening at its top, hollow stirring arms adapted to sweep over the surface of said hearth secured to said rotatable dome and extending outwardly therefrom and having air ports in their walls, the interiors of said arms communicatingwith the interier of said rotatable dome, a rotatable hollow sleeve assembly rigidly secured to and depending from said rotatable dome and communicating with the opening in the bottom of said rotatable dome, said sleeve assembly extending downwardly through the opening in the furnace hearth and comprising an outer sleeve fixed at its upper end to said rotatable dome and a concentric inner sleeve anchored to said outer sleeve, a stationary post extending upwardly through said inner sleeve and providing a vertical bearing surface for said inner sleeve, a plurality of stationary superimposed truncated hollow domes carried by said post, each having an opening at its bottom and top 'and surmounting said rotatable stoker dome, and

a capping dome crowning said truncated domes,

said domes being vertically spaced to provide air ports at their bottom peripheral edges through which to pass air into rubbish piled on said 3 hearth, a thrust bearing to carry the weight of said rotatable sleeve assembly and rotatable dome and means to rotate said sleeve assembly and hence the rotatable dome to which it is secured.,

6. A stoker and tuyre device for a rubbish burning furnace having a hearth with an opening therein, which comprises a rotatable dome having an opening at its bottom and an opening at its top, hollow stirring arms adapted to sweep over the surface of said hearth secured to said rotatable dome and extending outwardly therefrom* and having air ports in their walls, the interiors of said arms communicatirg with the interior of said rotatable dome, a rotatable stoker supporting assembly secured to and depending from said rotatable dome and extending downwardly through the opening in the furnace hearth,` said assembly comprising an outer hollow sleeve and a concentrically mounted inner sleeve anchored to said outer sleeve, the annular space between said sleeves providing a passageway for a current of air to said rotatable dome, means to rotate said supporting assembly and hence said rotatable dome, a stationary tuyre head supporting post extending upwardly through the center of said opening, and a tuyre head carried on said post, ,said tuyre head comprising superimposed truncated hollow domes, each having an opening at its bottom and top and surmounting said rotatable dome. and a,

capping dome closed at its top crowning said truncated domes, said domes being verticaly spaced to provide air ports at their peripherai edges through which to pass air into rubbish piled on said hearth, said stationary post providing a hearing surface about which said inner sleeve rotates and serving to carry the weight of said tuyre head independently of said rotatable stoker dome, and a thrust hearing on which said stoker supporting assembly rotates and serving to carry the weight of said rotatable dome and arms.

7. A stoker and tuyre device for a rubbish burning iurnace having a hearth with an opening therein, said stoker comprising a rotatable hollow trunoated dome having an opening at its bottom and an opening at its top, hollow stirring arms adapted to sweep over the surface of said hearth secured to said rotatable dome and extending outwardly therefrom and having air ports in their walls, the interiors of said arms communicating with the interior of said rotatable dome, a hollow sleeve assembly having an outer sleeve secured at its upper end to and depending from said rotatable dome and having a concentric inner sleeve secured to said outer sleeve by webs, the annular space between said sleeves providing an air passageway, said passageway of the sleeve assembly communicating with the opening in the bottom of said rotatable dome, said sleeve assembly extending downwardly through the opening in the furnace hearth, a stationary post extending upwardly through the center of said inner sleeve and providing a vertical hearing surface on which said inner sleeve rotates a piuraiity of stationary superimposed truncated hollow domes above said rotatable dome and communicating with said passageway and carried by said post, each having an opening at its bottom and top and surmounting said rotatable dome, and a stationary capping dome closed at its top crowning said stationary truncated domes, said stationary domes being vertically spaced to provide air ports at their peripheral edges through which to pass air into rubbish piled on said hearth, a thrust hearing on which said sleeve assembly rotates and carrying the weight of said rotatable dome, arms and sleeve assembly, and means to rotate said sleeve thereby to rotate said rotatable dome and arms.

8. A stoker and tuyre device for a rubbish 10 burning furnace having a hearth with an ope ing therein, said stoker comprising a rotatable holiow truncated dome having an opening at its bottom and an opening at its top, hoilow stirring arms adapted to sweep over the surface of said hearth secured to said rotatable dome and extending outwardly therefrom and having air ports in their walls, the interiors of said arms communicating with the interier of said rotatable dome, an outer hollow sleeve secured to and depending from said rotatable dome and communicating with the opening in the bottom of said rotatable dome, said outer sleeve being adapted to extend downwardiy through the opening in the furnace hearth, an inner hollow sleeve concentrically mounted in and secured to said outer sleeve, a post extending upwardly through said inner sleeve and providing a hearing surface for said inner sleeve, a plurality of superimposed trunoated hoilow domes carried by said post in stationary position and forming a stationary tuyre head, each having an opening at its bottom and top and surmounting said rotatable stoker dome, a capping dome crowning said truncated domes, said domes being verticaily spaced to provide air ports at their bottom peripherai edges through which to pass air into rubbish piied on said hearth, and a'baflie extending downwardly from said tuyre head into said rotatable dome and terminating i'n said hollow outer sleeve and serving to direct air passing through said sleeve in relative amounts to said hollow rotatable dome and to said stationary tuyre head.

WARREN S. MARTIN.

CHARLES HENNIG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATIEINTS`

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