US1790953A - Boiler cleaner - - Google Patents

Description

N. L. SNOW BOILER CLEANER Feb. 3, 1931.

1925 2 Sheets-Sheet ll Filed June 29,

N. L. SNOW BOILER CLEANER Feb. 3, 1931.

2 Sheets-Sheet 2 Patented Feb. 1931 nonnen I.. snow, yor bnr-norm,

MICHIGAN, AssiIeNo'n To QIAMONDEOWE.SPECIALTY BoI'LER CLEANER applicati-an iueiiaune 29,1525.-Y Serial No.:4o,423. 'l

The intention relates to boiler 'cleaners and has among its objects the provision of -a Yro- Y tatable discharge .nozzleeleinent capable of movement longitudinally of its axis of r o 5 tation for directing a jet of cleaning `fluid adjacent the :partsof the boiler to be cleaned.V

Referring pto the accompanying drawingsin which like reference characters indicate corresponding parts;

Figure l'showing the brake retarding means for the nozzle chamber rod;

construction'of boiler cleaner.;

Figure o isa sectional View along 33 of Figure 2;

Figures d and 5 illustrate farther modiiil -20fcations of boiler clean-er constructions.; .and

Figure 6 is an end elevation view of the boiler Vcleaner shown in Figure .5.

Referring to the drawings, reference charact-er 10 designates a blower head which may Zbe mounted in an fopeningll` 'of,thelooifler'` wall 12. Attached -to and forming an eXtension of the head, .is a fixed element 113 which is positioned to extend in proXiinitywith the usual boilerk tub'es' 14 orother parts of the 30. boiler to be cleaned. VThe `elementzl is provided with a plurality of por-ts or openings whichare spaced longitudinally yofthe element at predetermined points. 16 represents a travellingnozzle chamber adaptedV f for movement klongitudinally within the xed element 13 and vcarrying 'one or more discharge vnozzles 17. 18representsa platel or head closing the rear end of the nozzle; chamber. Secured within the forward end- 'gof the lnozzle chamber is a spider 1,9 having openings 20 "for affording passage of cleaning fluid from the b-lowerheadil to, the nozzle 17. 21-is a nozzle chamber rod fixed to the spider, 19 and provided vvi'thjaVK circular' rack portion .2 2 extending forwardly through the blower head. Cleaningfluid is admitted through a supplyline .28"y to the blower head 10 and thence tothe nozzle 17, the supply of cleaningfluid beingfcontrolled by a valve 211.

Y Figure 1 isan elevation view partly insection showingone for-mot my boiler cleaner;

Figure 1a is a-detail View along lil-1? ofI nozzle .chamber of the nozzle chamber by means shown inl Figure 1?. The crank 27`,.forthis .Ball bearing-v isi provided and isllievld by ajbr-acket .265;securedtothe soot blower head for Vtaking the outward reactiono'fjthe".

thrust;

chamberY 1 6v may be. ,given 'a longitudinal movement to return the nozzle chamber after I it yhasbfeen projectednnder fthe `influence of e' the cleaning fluid as hereinafterdescribed;

AKsecond gear 29 `is positioned to mesh witli'` the circular rack 22, and is fitted with a.han"1.v mer 30, which at `each rotation of thegear.'29V

Y will strike afbell 315; to indicate that .nozzle Figure `2 is a like view'showing a n'iodied 17 is properlyjregisteredY with one of 'they openings 15. 32 .is aorank provided witiha` key 12ay engaging a keyway 12b in the circulan the .nozzlechamben and hence the nozzle ,17,

formoving the'flatter through Yany desired arc. 'The key-1.2?may slidejnthe keywayv 12b when crankV 2 7 is'actufated Foraccom- Ypropriate arcuate length. Referringyto Fig-ure- 1a I havesliownia'.

brake 'retardinwsdevce forlapplyi a ire? y -tdlgforce tobthe nozzle chamberrod when the latter is acted upon `by the piston `eifect of thecleaning fiuid tending to projectk the finto the .portion of` 'elementy 13 within the-boiler.- fThe'clean-ing vfluid acting on the head18 tends .to project ,thenozzlf chamberand rod 21longitudinally inwardly O f thgrbgiler .'vval-l.' Vhile considerable frio l tion maybe established between thefnozzle. e

Chambord-6 andthe element 13 vtofchec'k the. movement of the `nozzlegchamber .under the indu-ence oi thecleaning iiuid, it :may be 1desirablj'e `to further restrain undue movement purpose, :has -an `eXtension2`7'toxvvhich is fined a brake drum,27b'engagealle a brake ,band

27. The ends ofthisband mayfbeic'on'tracfted of the device Y to causetheband to' Irictionally 'engage the; Y

brake drumbyanysuitable means such asa' knurled meinberf27d as willbereadily vunder-` stoodp By Vretarditig drum fa regtarding of the nozzle chamber rod is produced through engagement of the gear 28 and rack 22. Thus the knurled member 27d may .located in the part of in the lrear of be operated to control the. movement of the nozzle chamber rod under the influence of the'cleaning fluid.r y, f p

Where the friction between the nozzle chamber and element 13 is sufficient-to Vretard the *movementv ofthe nozzle chamber under the influence ofthe cleaning fluid, the crank 27 may be employed to y'impartni'ovement to the nozzle chamber both in aligning p the nozzle 17 with the openings 15 as well as in returning the nozzle chamberto its original position. Y

Y In operation of the boiler cleaner construction as showninFigure 1, cleaning fluid is admitted to the blower head 10 bymeans of the valve 24, the cleaning fluid passing to the nozzle chamber' 16 and the discharge nozzle 17 tending to project the nozzle chamber.V The operatorA then' releases the brake band 27c until the the nozzle 17 is inregister -with Athe first or other desired opening 15. The operator then l contracts/the brake band 27 C by the knurled memberV V27d toi hold the nozzle chamber against'further'movement and then rotates the crank 32 causing the Vjet of cleaning i'iuid from the nozzle 17 to travel through the desired arc Vfor cleaning the parts of the boiler thejet. The vskirt or body of the nozzle chamber will be made sulficiently long to close` all ofthe openings15 hatV opening with which nozzle 17 is in registration. Theoperator then again'releases the brake band 27 c Vto permit movement'of the nozzle chamber to register the nozzle 17 with the next opening vof the 4 element 13 and the lcleaning process is thus-V repeated throughout-the length 'ofthe fixed; element 13 or any desired portion thereof.A The crank 27 Yis employed to return thenozzle chamber after the cleaning liuid has vbeen shut off. i `f Referring to Figure v2 the `blower head 10a* is shown provided as before,

ment 13a having the arcuateopenings 15a.'` 16L represents'the nozzle chamber shown in this instance as provided with a pair of diametrically opposed discharge Vvnozzles-17 "af It is understood that any desired number of nozzles may be provided. 19a represents the spider having the `openings 20a. for accom-V inodatingtlie passage of cleaning fluid as best shown in Figure 3. The nozzle' chamber rod 21a in this instance is fitted with turbine rotors 33. Theserotors may be provided with keys fitted into the keyway 12Cl so that rotors 33will drive .the rodl21a while'permit-f'- ting the yrod 21a toslide relative to the rotors. A tationary blades 34; are provided for directing the fluid toward Vthe turbine rotors 33 for imparting rotary movement to the latter in accordance with the usual turbine practice. Y

bell'31 sounds to indicate thatl with a fixed ele-f The blades34 may be held in place by their frictional engagement with the inner walls of element 13a, the rod 21a freely rotating and sliding relative to these blades. In order to prevent anytendency of the outer rotor 33 to -move to the left, as seen in Figure 2, when 'with rounded ends 13e engaging the face of ,the rotor so as to minimize friction at this point. In this construction, the fluid for actuating the turbine isthe cleaning fluid which passes from the head 10a to the discharge nozzles 17 n. Thus, the turbine functions asa pressure reducing medium for reducing .the pressure of the cleaning fluid inpassing vfrom the supply line 23'to the-nozzles 17a. IVith such construction the use yof an orifice plate or reducing valve for effecting such reduction in vpressure of the-cleaning fluid is avoided. VIt will further be noted that the exhaust from the turbine passes to the discharge nozzles 17a.y The nozzle chamber 1Ga maybe progressively longitudinally moved and' controlledas before described to align thenozzles 17a with the openings 15a by the crank 27 or akbrake control device operating in the manner similar to the boiler cleaner shown in Figure 1. In the construction shown in Figure 2 it will be apparent that powerv means is provided for imparting a rotary inov-ement to the discharge nozzles Vand that the cleaning'fluid will exert a force' tending to project the nozzle chamber, VVwhich force may be supplemented by manual actuation of handle 27.

With reference to the construction shown inV Figure 1,10by represents the blower head provided with the fixed element 13b. Tele scopedl for longitudinal movement within the fixed element 13b is a vmovable element 37 formed atits forward end with an vannular shoulder 35 adapted for engagement with a corresponding shoulder 36 of the element 13b `for limiting the-outward movement of the rotative movement ywith respect tol the element 37. 19b indicates a spider having opens ings -20b functioning asbefore.V "39 isf a turbine ofthe spiral bladed or screw type mountedl'on a shaft 'L10 fixed with the spider 19". 21h is the nozzle chamberrod secured to the spider'dl which inrtulrn is secured to element 37 lfor-imparting 'longitudinal movement to theelement 37 'Ilie'forward end of the rod 21b `has Aa portion 22b threadedly engaging the head 10b as at 22 to produce longi liXed With-respect to the head and provided `Yvith a plurality of longitudinally spaced openings, a nozzle chamber providedrivith boiler, and meansfor utilizing the force ot the'steam to move said member longitudinally ot the element and to rotate said member.

2.' In a boiler cleaner, a head, an elementV fixed with respect to the head `and provided with a plurality of longitudinally 'spaced openings a' member iprovidedwith a discharge nozzle movablelongitudinally of the' element to successively register the nozzle with the openings, means for supplyinga cleaning fluid to said nozzle by Way of said element for discharge through said nozzle towardpartsfof thev boiler tobe cleaned, and

meansr Voperable to temporarily l check-the flongitudinal' movement of the s aid'member each time its discharge nozzle registers with one'of the openings in said elementl 3. In a boiler cleaner, a head, an element openings, a'nozzle chamber provided with a dischargenozzleV slidable longitudinally Within saidvelement to successively registerjsaid nozzle with the openings of the element,

means for supplying a cleaning fluidv to the head and thence to the nozzle chamber byWay of said element whereby the cleaning iiuid may bedischarge'dV through said nozzle when the latter is alignedavith the respective'openings', means for moving said nozzle chamber longitudinally of theelement and additional means operable to periodically check` the longitudinal-movement of saidnozzle chamber'.

Y 4. In a boiler'cleaner, a head, an element i fixed with respect to the head and provided" With a plurality of longitudinally spaced a discharge nozzle slidable lon{ g'itudinallyv Within 'said element tosuccessively!register said nozzlegivith the opening ofthe element,l

meansior supplying cleaningffluid tousaid nozzle chamber Yfor discharge through said nozzle and through the openings'oi said elef ment toward par-ts oi the boiler to Ybe cleaned, fluid pressure actuated means 1 torV moving said Anozzle chamber longitudinally ofthe ele` ment, and means for rotating said nozzle When the nozzle is broughtinto register With said openings, l K p Y 5. In a boiler cleaner, a head, Lan element fined With respect to Asaid lieadandprovidedl with a plurality of openings spaced. longitudinally of the element,a member provided with a discharge nozzle .movable longitudinally. of the element to successively align the,

nozzle'xvithV they openings, ntleans'JfOV Supplyinga cleaning fliiid to saidhead and ,thence to theVV nozzle, means 'for indicatingthe position of the nozzle vwith respectto the openings of the element, and means for moving the member longitudinally ofthe element.

6,A`.boiler cleaner comprising an element provided Withfan opening, a nozzle chamber A locatedk Within the element and provided With aldischarge nozzle 'adapted to register With said opening,niean s for moving the nozzle. chamber longitudinally, a fluid actuated turbine connected to operatel said vnozzle cham' ber, and means for supplying a cleaning fluid to act on said turbine for causing a rotative movement of the nozzle chamber.

7. -A boiler cleaner comprising a discharge nozzle adapted to be rotated, a fluid actuated turbine connected to rotate said nozzle, means for supplyingv fluid to the turbine and nozzle, means yfor imparting a longitudinal movement tosaid nozzlerand means for periodically checking the longitudinal movement of the'nozzletocause the same to advance in steps. 1 e v 8. A boiler cleaner' comprising a discharge nozzle adapted to be rotated, afluid actuated turbine connected -to rotate said nozzle,means for supply-ing fluid to the turbine and nozzle, and means for imparting a step by step long tudinal movement to the tiirbinefand nozzle as a unit.

- 9. A' boiler'cleaner comprising a rotatable discharge nozzle adapted to be movedlongi'- said nozzle at Va plurality of predetermined points with respect to the boiler to be cleaned,

means for supplyinga cleaning tluidto said.

nozzle, .andlmeans actuated by the pressure odically moving said nozzle longitudinally ofits axis of rotation to locate the nozzle tudinally of the'aXis of rotation for locating rloc of the cleaning fluid for automatically peri-z at said plurality ofpredet'eiiiiined points and Y for imparting a rotary movement to the noz*k zle When it ispositionedinsaid predetermined points. c Y

p l0. A boiler cleaner comprising a head, an element fixed relative torsaid :head and provided With a plurality of' Vopenings spaced longitudinally-thereof at predetermined points,

a discharge.nozzleacliamber movable longiitudinally within. 'said' element and provided Withv anozzlel adapted to successively register VWith said openings, a fluid actuated turbine for imparting rotary` movement to saidV cliam-y ber a-nd nozzle, means for supp-lying a clean`- c ing Huid to said turbine and nozzle, and means for automatically advancing said nozzleto register WithA the successive openings, said last named means automatically acting after the nozzleha-sbeen in alignment With any of saidv openings for .a predetermined time.

11. In combination 4vvitlia rotatable boiler cleaner discharge nozzle adaptedto be moved in a step by step l'movement' longitudinally of theaxisof rotation to locate the nozzle at ay plurality of predetermined positions,m`eans for supplyingza cleaning fluid tol said nozzle,

.andzmeans operableV uponr the supplying ofV cleaning fluid-to said nozzle to automatically Y impart a step by step movement to said nzzle whereby the nozzle is moved from any one of .said postionsto the next, said last named means automatically acting after the nozzle has been in any one of said positions for a predetermined length of time.

12. A boiler cleaner comprising a rotatable discharge nozzle adaptedto be moved longi-f -tudnally of the' aXis of rotationforlocating n said nozzle at a plurality of predeterminedV points vvith respect to the boiler to becleaned, means for supplying a cleaning fluid to said nozzle, the pressure of said cleaning iiuid being utilized to impart both rotative and longi-` tudinal movement to said nozzle, and means restricting the ioW of the cleaning fluid from the nozzle to such positions of the nozzle as correspond with said predetermined points. 13. A boiler cleaner comprising a head, f an element provided With an opening, a nozzle chamber located Within the element and provided with a discharge nozzle adapted to register With said opening, means including a shaft threaded in said head for effecting a longitudinal movement of said nozzle chamber, a fluid actuated turbine connected to operate said nozzle chamber, and means for sup-- plying a cleaning fluid to act on said turbine forA causing a rotative movement of the nozzle chamber. l x In testimony whereof I alix my signature.

NORMAN L. sNovv.

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