US917971A - Hydraulic rotary pump. - Google Patents

Description

I. H. SPENCER.

HYDRAULIC ROTARY PUMP.

APPLICATION FILED 1130.14, 1905.

Patented Api. 13, 1909.

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IRA H. SPENCER, OF HARTFORD, CONNEC'EIICUT, ASSlGlOR TO ORGALY P OWR COMPANY, OF HARTFORD, CONNECTICUT, A. CORPK'JRATIO'N Ol" CONNECTICUT.

HYBRAULIC ROTARY- PUMP.

Specification of Lettere Patent.

Patented April 13,1909.

Application .filed December le, 1965. Serial No. 291,665.

To allwlzfomit muy conce-ru:

vBe it known that l, las H. SPENCER, a citizen ofthe United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, (Whose post-otiiee address is Hartford, Conneeticuh) have invented certain new and useful Improvements in Hydraulic Rotary Pumps, o1 which the following is a full, Clear, and exact description, whereby any one skilled in the art may make and use the saine.

The invention relates to hydraulic pumps of .the rotary or centrifugal type, and more particularly to such a device in which the l5 'rotary pump is actuated by a direct drive Wit-hout appreciable loss or slip between said rotary pump parts anid the motor or driving inemben The object of the invent-ion is to provide a, rotary pump in connection With a single shaft forming the drive ineni'oer therefor; said shaft constituting the main shaft of the driving member.

A further object is to provide a combined '25 pun-1p and motor structure in Ywhich all of the parts are firmly and positively supported in connect-ion with, what is praetieally, a single 'continuous casing A still further object is to arrange thepump vanes directly' upf the motor shaft, in an inelosed easing removably united with a motor easing and with provision for obviating Water leakage and securing positive oiling of the parts. l

Referring to the drawings :"lfigure l is a view in side elevation of a n'iotor and at- 'taehed pump; the pump being shown partially in section. Fig. 2 is a cross sectional view on the line ai of Fig. l, looking to- 40 yward the pump Casing. Fig. 3 an end vieiv of the motor shaft showing the manner of joiningthe pump and motor casing. Fig. 4 is a detail sectional view ot the hub of the pump vanes; said vanes being broken away.

Centrifugal pumps driven in various ways are so well'known in the art to hardly need detail description. ln all sut-h pumps, so far as known, the arrangement.

has heen (cumbersome and unwieldy. Or

dinarily the pump shaftv has had au least A two hearings or a long bearing for its shaft andpurnp vanes; which shaft either through independent bearing supports or a.l cumbersome casing, has beenmounted upon a substantial base independent of the motor or driving member. l\ie,cessa.1ilyv from such a construction it has been diiiicult to provide perfect alineinent between the pump shaft and the driving shaft; and,of Course, with 60 the parts even slightly out of alineinent, the vibration as well as the noise induced there by is very appreciable, particularly,as the parts run at high speeds.

It is one of the principal objects of the present invention to overcome these defects and eoalesce into a. single structure the motor and the various pump parts; said strueture being' contained Within what is practically a single casing lirnilyrnounted upon a single hase. y

in the accompanying drawings the nunreral l denotes a motor having a easing 2 mounted upon a base of any desired type 3. ln order to :reduce vibration and consequent noise, the motor easing 2 may have interposed between it and the main base 3 aI thick pad or web of mineral Wool or other sound deadening and insulatingfmaterial 4. As shown in the drawings the motor casing 2, V l as projecting from either end thereof, bearing casing-s 5 6 which form the support for the armature shaft 7.

The device thus far described is .an ordi! nary elet-,trie motor. The fields of this are, ol course, inountedfwithin the Casing, and il'. believed such a motor needs no detail description. Ot' eourse, it is' understood that a steam motor or any other suitable translator oi energy, may be used. 90,

The arnmture shaft 7 projects 'throughthe bearing jund at its outer end`r has firmly scoured to 1t the blades S of the' pump. 'ihese blades may be of any desired toi-iu and size commonly e1nployed-in rQ- 95 tary pumps, and are surrmuided and in closed by a' pump casing 9, having an inlet opening as at l().and an annular discharge passage l1 from which an outlet l2 extends. preier tion ll. The pump easing 9 is of somewhat peculiar shape, and is provided with a cenably tangential to the annular porirai hub 13 which forms a metallic packing and bearingv for the'zhub 14,'upon which the Yanes are mounted and which in turn is secured to the armature shaft and extends Withirithe hub 13. Ifdesired this hub inay be formed with a reduced sleeve surrounding; the motor shaft and extending clear through to the motor bearing.l Thisnvill provide against end movement ofthe parts with relation to each other and avoid knocking of the rotary parts Within the pump casing. The hub 18 is boi'ed out and has adiameter considerably greater 'than the armature* shaft.I It also extends somedistance from the facel of the pump easing, and provides a stutling or packing-box for the armatur'shait to prevent back leakage of fluid along said shaft. As shown herein, the space between the end of the hub 14 and the hub 13, is filled With a packing 16 adjustably held in place by a' packingring 17 screwed with in the hub' 13.

The casing 9 has extending from its- .rear tace 15, a tube-like projectionlS .provided at its outer end with a flange 19, the outer end of which is nicely finished to surface and-lits against .the finished surface 20 upon.

the motor casing 2, surrounding the bearing 5 and parts intermediate said bearing and.

the pump Yanes. The extension 18` is of such a length that a space is left between the end ot' the hub l'and the end of the bearing box 5; and in this space and hanging upon the'shal't 7 is an oil ring 21. This oil ring is of suicient diameter to extend nearly to the bottom ot' the oil Well 22' termed by the projection 1S. y v

Of course, it is understood that the motor bearing 5 is suitably oiled and the shaft-.7, through the oil ring 21, is Well lubricated at the stufng box.v To provide againstfback leakageot' water or other iuid, from the pump casing to the motor shaft- 5, a shield or disk 23 is provided at the end of the motor hearing 5 and secured to the shaft 7.

Obviously `from the above described arrangement oi parts, the pump vanes and l casing are perfectly alined with reference to the motor shaft. 7, when said pump casing is once properly positioned, With reference to the motor casing; and. thus there is provided a sti'ucture in which all ot the operating parts occupy thel least possible space within what is practically a vsingle, casing. rlhe advantages oit such a structure are obvious at a. glance. 'lt will be readily understood that the motorcasing may be finished at the point 2() concentric with the motor shaft, and avith the proper finishing ot the flange 9, the parts will fit together with absolute precision, giving perfect alinement and noiseiess and easy running` qualities. A. still further advantage of the construction j resides in its very condensed form, The extended hub or tube as the case'may be Which 'lies between the varies of thepu-mp and the disk adjacent to the motor bearing, has a very perceptible taper, and during rapid rotationl the oil upon the sleeve Will be thrown 'to its high point against the stuiiing box.

This aids in preventing leakage of Water to tne motor bearing.

Of course, it is understood that the exact details of 'construction may be varied to a -`considerable degree, and that the exactlform of motor casing and pump casing herein shown, is notA absolutely essential to the invention which contemplates the formation f l i WhatI doclaim asmy invention and del v sire to secure by Letters Patent is 1. ln combinatiomin a rotary hydraulic pump, a motor having a complete inclosing easing and a motor' shaft extending therefrom, pump varies having a hub secured directly to the motor shaft and a pump casing surrounding and inclosin said pump vanes and hub and 'having a tu ular extension of comparatively small diameter secured to the' motor casing and forming an inelosed oil Well about the shaft of the motor and hub of the pump.

2. In combination, -in a rotary hydraulic pump, a motor having a casing and with a shaft projecting'beyond the complete inclosing casing, pump varies having a hub secured to the end of said shaft, a puin cas ing surroundinoP said varies and hu and having a tubu ar projecting portion encircling the shaft and secured to the motor casing and formingan inclosed oil Well7 a central' hub upon the pump casing surroundn ig the motor shaft and projecting into the oil well easing, a stntling `box arranged in said hub andan oil ring intermediate said stutling box and the Vbearing for the motor shaft.

3. ln combination in a rotary hydraulic pump, a motor having a complete inclosing casing, a shaft having bearings in said cas4- ingI and projecting therefrom, a pump cascentrically arranged with reference to said shat't and of comparatively small diameter, said extension forming an nclosed oil Well, pump vanes mounted Within the pump casing and having a hub projecting therefrom into the oil well casing and surrounding the motor shaft, a stalling box appurtenant to` Vsaid hub and pump casing, a disk securedto the shaft adjacent t0 the motor casing and an oil ring intermediate the stufiing box and disk substantially as described.

pump, a motor having a complete inc-losing casing and a motor shaft extending thereing providedwvith a tubular extension con- 41.25 et. ln combination, in a rotary hydraulic y from, pump -Yancs seem/'ed to Sad moor mots? shnf :m6 tapered huh :md n oxng 5h-aft, a tapered hub axhndmg from 'che i 1mg upon the tapered hub.

5 parathf'ely'small dnmeer :ir-:mgm m vong Witnesses:

muatmn of mud motor msm" :and fui-nung] MAY C. hmmm, an od weH surrounmg :um mcmsmg the J. M. Lum).

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