US1706868A - Blower for boilers - Google Patents

Description

Maren 26, 1929, J C, BENNETT 1,706,868

'BLQWER FORh oILERs Filed Aug. 13, 1926 2 Sheets-Sheet 2 rai-eared Mal. zo, 1929.

entren artes A'l'l' lltllhlp.

- JAMES C. BENNETT, 01E' DETROCT, IVlCl-Illihlil.

BLVER FOR BOLERS.

Application filed August 13, 1926. Serial No. 128,926.

This invention relates to blowera boilers and has special reference to that class oit ett-ain blowers adapted to be mounted in a wall or other Support, adjaeent the boiler tubes, and rotated or oseillated to diseharoe ot eteani aggainslst Athe boiler toben tor noot ren'iovini` purposes. Having obtained numerous patente on blowerev l ain aware of falten having;` been used adjacent the outer ende olf blower arins for controlling `the admission el? steam to the arms. Valve opening` and Closing means ot various types have been uned in eonneetion with the een trollinji valves and my invention ainjis to sinililiy this; Vtype of blower so that parte: niay be inanuitaelured at a low cost and readily assembled, the bloiiier easily and quickly installed, and 'its oilneration rendered Ci'iinparatively easy. i

My invention 'lurther` aims to provide a,

paclzleso autoiiiatie pressureseated valve inenibei.' which cooperates with an end` ot a blower arm in lbrniing a controlling; valve within a Suitable lioueing,v adaptedfto reeeive steam to enter the blowe aria when rot Y Various means niay be employed tor rorat ing; the blower arni and. various kinds olf stops may be provided to liinit Yhe action of the bloweil arm.

lilly invention further aimsI to provide'a soot blower wherein a eteanfi balanced ivalve forms part oit a blower arin, the body of the valve beingl an integral part ot the armi and movable relative to a non-rotatable .Citationary bart ofthe Valve. The -steain balanced as near as possible so asin prevent Steam pressure :troni materially interter'ing with rotation Olii the Valve body, andlproriniou made lor rotating); either end of the valve body no that it isagiplieabie to various oypes oit boiler Settings-` i i My inveirtion will be hereina 1er epe/eilt eally described and then elai1ned,`and reiferei'iee will now be had to the cli-awning, wherein Figure l a longitudinal sectionallview oit the valvular lpart oit niy blower;

ligr. 2 ie a Irons Sectional View ot the saine;

Fig. 3 is a Side elevation of the blower in connection with the portion of a boiler allow` ing the blower anni relative to boiler tubes, and

l? 4 is a longitudinal sectional View ont a portion ot a blower showing' ainodilied torni of housing head.'

'for

ln the drawing, the reference numeral l denotes a boiler netting, wall or other nur port adjacent boiler tubes 2 adapted to have noot and other :toi-eign matter removed tlierel'roni by the aetion ot nte-aiu or a eieanmi agent forcibly nrojeeted against 'the tubes.

Mounted in the wall l ies-a beau-:inn1 il and jourizialed in the liearing; in a seetional blower arni 'eoinponed of an inner nozzle section a, 65 and intermediate `bearing1 section 5 and a valve section (3. The Section5 5 and lj are joined by a sleeve 'i' and the eeetione fl and 5 are joined by a coupling; t3. 'liliese connectie-nrs ilierniit of the blower arm Soutiens beingr adjusted relative to one another by rotation so that Said Sections may be eorreotiy positioned tor a deaired inntallation olf the blower.

The aiin Seetion Ll han ita outer end closed, 75

an at 9, and nuit-ably :supported by a bearing; l() attached to one oli the tubes; 2Q ln the arm Section 4l are internal now/:Iles ,il by whieli eteain is projeoted against t! tubes 2.

The outer end ot the bearing,Y 3 'lornied 80 to Vprovide a atop lug;l i2 and a depeiuiing` support i3 iior a braeliet rod l-l. Adjustable on this ln'aelet ,is a Sleeve lieiipporting ay 'valve housing' 1G hai/niga conventional forni olf startling box 17 through which ex 85 tende the valveseetion G oil? the blower arm. Conmiunieatinig' with the bottoni ol' the valve housing 16 in a steam niliinly pipe i8 and this pipe will cooperate with the brat-,tiet

.rod la, and the journaled blower arin in sup 90 portino; the housing* 1G about the end ot the arni section G. y

The arin fie/ation (i han` a closed end if) 'torined with a nut portion il() and on the end'oii said arme ietioi'i are two stained ail-art 95 collare1 or valve neat nieniboral 2l and 2i); con` neetedby parallel longitndinally diepoiied walia E33 Ito eooperatowitli the Valve neat members;informing anoblonn` opening; QTL :into the arm seetion, 6 so that eteain may enter this arm section and through the bearing; Section 5 to the nozzle section The Valve Seat members; 2l, 22 and A23 al:- lord an annular neat :for a eoneave if; lvulai? member seated on said seat members and normally closing the opei'iine; 2l. The top ol the valvular member 25 is :torined with ilioeltel's 2G it'or `@oiled expannion springe 2"? bearing-j against a Cover plate 28 detaehably niountedon-A top of the housing' 16. The poi'laeta 26 have lateralrwinge 2S) eno-aging 'xitllefof the` housing` 1G So that the valvi'ilar 4o 1 `'turned' almost a complete revolution, the

i member 'cannot laterally shift under the iniiuenee otY arm rotation by the valve section 6.v The expansive force of the springs v27 is suiiicient to hold the Valve member 25 lirmly seated on the valve seat members 21, 22 and 23 and steam can only enter the open- "ing 24, from the housing 16, when the arm section 6 is rotated on-e way or the other to place the opening V24; m communication with the valve housing.v

'The housing 16 is provided with a detach-A able end head 30 having a recess 31 provid-v ingelearance for the nut portion 2t) of the for a pin`3t 'carried by the collar '22.

' 24 jelosed by the valvular member 25.

For. rotating lthe tubular and sectional Yblower 'arm and Vsprocket wheel 35 a chain 36 may be employed. vThe sprocket wheel has 'its hub portionl 37 secured on the sleeve t by V'a looked set yscrew 38 constituting a stopjin veol'meetion with the bearing lug 12. lVith the sprocket Vwheel 35 Aadjustable relative'to the blower'a'rm saidpsproelet wheel may be set 'so thatthe blower arn fmay be `'rotated approximately three vhuni dred 'and sixty 'degrees or simply in an are of lesser' niimber'of degrees. This stop V'and lug will indicate the position 'of the nozzles Y or jets 11 ofthe blower arm relative to the 4tubes 2, 'while the stop'fserew v33 and pin 34 deiine the` closedposition of the'valve. -Otcou'rse if theblower arm is to be always stop screw 33 and the pin 34 maybe disk pensed with', becausethe 'stop 88 and the lug .position oit the'valve raswell asia positionoi la'tion so 'that the nozzles. or jetsV 11- are "swung in 'a defined are for discharging steam in 'predetermined di recitions. The .sprocket wheel and chain are pref- 'erablyhsedwhen the blower is located at f Y a height not with'ineafsy reach, but Ywhen the y blower 1s Y at an elevation that a lireman or ,engineermayv conveniently operate the blower, I v"provvide the housin'ghl`6 with .another typev of head, designated 39. This y head has a stuiilng bo'X'vlO vfor aLstem` 41 which isQuta-ppe'd 'or otherwise fixed .to the nut portion 2O of ,theY arm section 6, as at ,112, seeFg. 4. A hahd wheelZlS placed on the stem 411 will permit of the blower arm being rotated or oscillatcd, and said hand wheel has been shown 1n dot and dash lines vto indicate that it is not pern'ianently mounted on the stem, but placed thereon tor each operation.

I desire to direct attention to the steam balance feature of the arm section 6, which constitutes a valve body within the housing 16. Iiy reference to Fig. 1 it will be notcd that a space exists between the valve scat member 2l andthe end of the housing. The area oi this space is less than the space between the head 3() and the valve scat member 22, but the pressure of stcam is almost, equal at both ends of the valve body, consequentiy the valve will be somewhat balanced, enough to prevent any material longitudinal lmovement of the arm section 6 during rotation. lVith the valve member concave to seat on the` members :'31 aud 2;. the steam pressure above the valve member will cooperate with the c rpansivc i'orce of the springs 2T in holding the concave valve member relative to thc valve body. Furthermore, it is to be noted that by virtue of the sprocket wheel 35 or the stem 11 the valve body may be rotated from either cud thereoi". This provision will readily adapt the valve to fario'us types of boiler settings.

vI attach considerable importance to the simplicity ol construction in connection with the valve and its housing; The housingr is a. casting in which the arm section 6 may be easily placed and the cover 28 and head 3() readily attached to the housing. The arm section 6 only requires the valve seat members 21, 22 and 23 to sul port the valvular me1nber25 which is easily placed in position. Since the valvular member exerts a constant pressure on the valve seat members of the arm section 6, these members will be y more or less ground and maintain a, non- 12 could be depended upon to. define a closed,

lcakable connection between the valvular member and the lt-lower arm. There are no gears, cams or the like for operating the valve and when the blower arm is rotated or oseillated, the valve is automatically opened or closed. It will be open for any desired degree of rotation of the blower arm and closed when Vthe blower arm is in one position, therefore the operation of the blower by a fireman or engineer is readily understood. The simplicity of construction permits oi the blower being used for many said member and provided with an inlet, a blower arm extending into said housing and having an opening adapted to communicate therewith to receive steam from said housing, a non-rotatable valvular member in said housing supported by said blower arm and .normally closing the steam receiving opening ot said. blower arm, means connected to said blower arm adapted for rotating said arm, and means carried by said blower arm andssaid housing adapted'to define a position oi said blower arm in which said valvular member closes said steam receivingopening.

2. In a soot blower 'for boilers, a bracket, a housing adjustable on said bracket, a r0 tary valve body in said housing and adapted for 'the discharge of steam from said housing, a steam connection for said housing, a non-rotatable steam pressure valve member on said body controlling communication between said valve body and said housing, and means above said bracket to facilitate rotating the valvebody. 1

In a soot blower, the combination of a blower having a portion forming a valve body, collars onthe ends of said body, walls connecting said collars and delining therewith an opening communicating with said body, a steam receiving housing enclosing said valve body, a non-rotatable valve mem ber in said housing seated on the collars and walls oit said valve body and controlling the communication between said housing and said valve body, springs in said housing retaining said valve member on said collars and walls, and means adapted :tor rotating said valve body.

4. A soot blower comprising a iixed steam tight housing, a bearing, a blower arm journalled in said bearing and extending into said housing and having an opening adapted to communicate therewith to receive steam from said housing, a non-rotatable valvular member in said housing supported by said blower arm and normally closing said opening, means `for rotating said blower arm, said means including a stop element engageable with said bearing and adapted to limit rotation of said arm.

In testimony whereof I afliiX my signature.

JAMES C. BENNETT.

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