US1649001A - Soot blower - Google Patents

Description

Nov. 15, 192 7.

- l E. P. sTRouP ET AL 649001 sooT BLOWER Filed Nov, a, 1.92 z sheets-snaai 1 A TTORNEY5.

Nov. l5, 1927. Y 1,649,001

E. P. STROUP ET AL sooT BLOWER Filed Nov.` 2, 1923 2 Sheets-Sheet 2 A TTORNEYS.

Fatented Nov. l5, i927'.

rra stair Ainstar ortica.

tie, i

nvnnnrr I'. srnour ANI) winner-1in. ooox, or MARION, INDIANA, AssIeNoIts *ro*- IvIAteIoN MACHINE, rouunnx a suretx coaIrANx, or MARION, INDIANA, A oon- PORATIO'N.

` Y soor stewart.

Y YApp'lieaufm inea November 27,/ ieee. sensi NQ. ermee.l

This invention, relates to sloot blowers for boilers having tubes therein, upon which tubes accumulate dust and the like resulting from the passage' ofy hot gases, therearound and the deposit of the `line-ash and soot thereon. The purpose of the sootblower `is to remove said deposit-from the boiler tubes, so that the actua-ltranster of heat will occur-in the shortest possible time, that is, by cleantubes., ik. i j; f .A

The inventionV relatesv particularly yto the headset a 'soot cleaner and, specifically to thoseot1 the blower `type wherein a fluid is utilized for blowingpurposes and generally under i considerable'f` pressure. lyl-leretotore it has been extremelyditlicult tov securea blower head which willlsupply tluidvunder pressure to the blowingjtube and permit roe tation or oscillation ofthe latter without providing lluiditightjoints therefor, `which invariably caused;V the,V` turning parts to be held against turning, exoeptby 4the application of great. itorce.` l y o The chief 'object otthepresent invention therefore, is

to provide ablower headwhich will' permit turning o "tthel movable `element and the supplyingh otuidl under pressure thereto, yet permit the turning movement to be accomplishedwith relativeease and free-` dom. I' i" p Heretofore blower heads have been utilized which havek admittedjiuid pressure to the end of the same. ylhis creates"an axial unbalf ancedl thrust that "y 1s objectionable when transmitted to the stationary support. Y

Another form'` of"V blower head creates a nonaxial thrust, whiohjin the movement of the movable parte preventsthe use'lotfa Huid tight joint except at the' expense of an "excessive power Y application for turningk purf poses.V I

Another thief obje'otfot theinvention is to construct theblower headC in Sachin-fash-l ion that the thrustiswaxialand isbalanced.`v`

The chief featureof this invention consists f in' the blow tube construction,4 wherein there are a main. blow tube ,not extendi1ig"appre` ciablybeyond ithe boilersetting or head plate and an 4outward@blowtube'extension in alignment therewith` and the` two securedto-` getherby ascrew 1connection, and said blow i tube extension havingaabout midway -thereotg a peripheral series'oi' steam lrexeivingV ports with an outwardly extending `collar i orshoulder onsaid extension' tube .on each side"` of the series of ports, and the outer end of theextension tube being closed.y The extension tube is supported by a steam head which extends Vfor the major portion of the length thereof andwhich, is secured to and supported upon the'upper. end of a ixedsteam conduit, so that `the extension tube will be maintained' in axial alignment witha main blow tube. Said head is V'formed ottwo sections f surrounding theextension tube and engaging respectively, the "shouldersv onv the two sides of the seriesfof ports so as to prevent Vlateral displacement ot the` tube in thehsteamfhead and to guidethe turning movement ofthe extension tube therein.vu The extension tube is mounted in the stealnhead` with' suitable packing at each fend of the steam head to Ymakethesame-steam tight and yet permit l the turning movement ot the blow tube `con struction'. The steam head has asteam `chamber entire-ly surroundingthe series off ports so as to supply steam to the extension f tube to resist axial thrust and leave theiex tension tube balanced therein forl easy -ro tary,movement.` ,Y y f The lfull nature oit `the invention will be understoodirom the accompanying draw-y ings and the `following description and claims: i if In the drawings Fig. l is a side elevational view of theinvention and associated ,parts `showing the same incorporated in a' boiler setting, the latter being shown in section, to.

gether `with the blower tube and support y i therefor. Fig 2 is an enlarged central longitudinalsection ofthe "upperright hand por#` liedfform of theinvention, partly in elevation and partly inseotionp Figjl is an end eler valtional view oi the reduction i'eaturefshown iirFigiB v f i Iv li y lnthediawingsl() indicates thewa'll of tion ot' Fig 1.` Fig isla. view oflagmodi# asteam "boiler-construct-ion and 1l indicates boiler tubes in staggeredv relation VAwith each other? as usual. Through said wallextends. an Yopeningwhich contains a tubularwall box lhaving aheadplate on'its outer end.` A blow tubev `le extendscentrally 'i through the wallbox4 ljand its inuerendl is closed; Saidblow Vtube extends transversenoZialesv lf?, whereby there are nro `projecting portions `on the blow tube `14E.

. i o 105 j lyof the boiler tubes ll andhas a number oi" holes V1G in it containinginward'extending y i til) ed for supplying steam or other tlnid under pressure to the blow tube. The steam passes it'rom header 18 through the upward extending steam pipe 19 and goose neck otl'set 21 and the passage of steam is controlled by hand operated valve 20. The pipe 19 and oli'set 21 constitute the steam conduitwhich is in fixed position, being held in place by the header 18, by the bracket 22 and bar 23, which latter is secured to the head of the wall box. I

The blow tube construction as herein shown, includes a blow tube 14 in the boiler construction and an extension tube 29 extends outwardly from wall 1() in axial alignment with blow tube 14 and its outer end is closed by wall 40 and its inner end is connected with the blow tube, by one of said tubes being screwed into the other, as shown.

The outer end of the blow tube construction, that is the extension 29, is supported by a steam head 50 which is formed in` two separable sections 41 and 51 secured together by bolts 49 and at the lower end the flange 60 ot the steam head is bolted to the flange (51 on the upper end of the steam conduit. One seetion of the steam head is at one side of a peripheral series-ot' ports 38 in the extension tube 29 and is spaced away from said ports so as to form a steam chamber entirely surrounding the ports. To prevent lateral movement or displacement of the extension tube 29, the sections 41 and 51 ot the steam head abut againstl annular shoulders 89 on and extending around the extension tube, there being one shoulder on each side ot' the series of ports, substantially as shown.

The extension tube 29 is mounted in the steam head with suitable packing for rendering the same steam tight but permitting the easy turning of the tube. As herein shown, the section 41 of the steam head has a packing recess 42 and is externally threaded at 43. A packing glandv 44 is located in said recess and. a packing nut 46 is internally threaded to engage threaded portion 43 so that when turned itwilly force in the gland 44 to form a tight `ioint. On the opposite side ot the series of ports the section 51 of the steam head is similarly recessed at 52 and provided with threaded exterior 53. The packing gland 54 is slidably supported by said construction for tightening the packing 55 when the packing nut 56 moves up the gland 54.

Vith this arrangement the steam head surrounds the major portion ot the extension tube 29 so as to support it and supply steam thereto as above without any relative movement of the extension tube and steam head.

The outer end of the blow tube 14 has a collar27 with longitudinal slots in its periphery. On the innerend ot the extension tube there is a pulley or sheare 2G keyed for turning the tube consti-action which has in its hub a slot 31 for a key 32 that extends trom shoulder 30 over into engagement with one ot the notches 28 in the collar 27 on the blow tube 14 so as to cause the blow tube to turn along with the blow tube extension when the wheel is turned. 'l`he key 32 is held in place by the set screw 33 in the hub of the wheel 26. lith this construction the actual arrangement ot the blow tube with reference to the pulley 2G can be adjusted as desired. The wheel 26 is independent of the steam head 50.

Turning ot the tube is limited by means for stopping the rotary n'ioven'ient ot the wheel 26. This is done by stop 34 on the wall box head plate 13 and positioned to engage a stop 35 on the pulley 20 which is held in place by a bolt 36 and a nut 37.

In Figs. 3 and 4 of the drawings a moditied form of the invention is illustrated, and a description ot' the similar parts is omitted. In this embodiment the blower head is substantially identical with the blower head previously described, but the pulley 126 is otherwise formed. Herein the pulley support 133 is keyed by the key 32 to the extension tube 29 and the blower tube 14 in substantially the same manner. However, the pulley 126 pivotally supports a gear 127 on the eccentric shaft 140, which gear 127 meshes with a gear 128, said gear being maintained stationary by the stop 129 engaging the stop 130 carried by the wall box 13. Engagement with the gear 12S by the gear 127, in the rotation of the pulley 126, causes the pinion 131 also mounted on the ,eccentric shait 140, to engage the teeth 132 of the support 133 of the pulley. Thus, the inner pulley part or support 133 rotates at a slower rate than the peripheral or sheave portion 126 thereof, and thus a gear reduction is secured by the foregoing arrangement.

The invent-ion claimed is:

1. A soot blower mechanism including the combination of a` wall box head plate in a steam boiler, a rotatable blow tube mounted therein and extending slightly beyond said head-plate, a blow-tube extension4 reniovably connected with the outer end of said blow tube and extending outwardly therefrom and in alinement therewith, so that the blow tube and said extension are rotatable as a unit, said extension tube being closed at its outer end and intermediate its ends having a peripheral series of inlet ports and an outwardly radially extending lshoulder at each side of the series of inlet ports, a stationary valve controlled steam conduit, a steam head mounted on and carried by said steam conduit and surrounding the blow tube extension and spaced from the series of ports therein so as to furnish a steam chamber surrounding the ports, said steam head being formed of separable end portions secured together with one of said end portions surlll) rounding the blow tube extension at each side of the series of ports and adjacent-'to the Ashoulder of theblow tube extension, and

ackin r means surroundino" the blow tube means extended from the pulley into engagey l `power to the blow tube and` causin A Y turn with thek pulley and extension tu ment with the `blow tube for transmitting it to 3. A soot blower mechanism substantially as set forth Lin claim 1, with a pulley secured on said extension tube, means for turning the pulley, a collar secured around the outer end of the blowtube peripherally slotted, and al removable keyl adapted to extend 'from the .pulley into one of the slots of said collar,` whereby the angular `relation of the blow tube and extension tube may be readily adjusted.

In witness whereof, we have hereunto af` fixed our signatures.

i EVERETT P. sTRoUP. Vi

WILLIAM A.v 000K.

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