US1565819A - Pump - Google Patents

Description

M. B. SAUNDERS D'ec- 15 1925'.

PUMP

Filed June 29. 1922 3 Sheets-Sheet 1 l IIL Dec. 15, 192.5.

M. B'. sAuNDERs PUMP -Filed June 29. 1922 y 3 Sheets-Sheet 2 mm mm @mm om mw mm m om Dec. r15, 1525.

M. B. SAUNDERS PUMP s sheets-sheet s Filed June 29. .l-)2z Wife@ Patented Dec. 15, 1925.Y`

UNITED STATES PA'I'EN'!` OEFlCE..

WORKS LIMITED, OF OWEN ADA.

SOUND, ONTARIO, CANADA., A CORYORATION OF CAN- PUMP.

.Application ledlJune 29, 1922. Serial No. 571,644.

To all who/m, it may concern.'

- Be it knowii that I, MALCOLM B. SAUN mms, of the city of Owen Sound.l Province. of Ontario, Dominion of Canada, a subject of the King of Great Britain, haverinvented certain new and useful Improvements in Pumps; and Ido hereby declare that the following is a full, clear, and exact description thereof.

Although certain features of my invention are applicable to pumps generally the invention is particularly adapted to pumps of the diaphragm type.

The invention has for its object to provide a pump of this type the vital parts of which may be readily exposed with minimum disassociation of the working parts, thereby expediting inspection and repair work and consequently reducing the' time that the pump is idle.

Another object is to so construct and arrange the diaphragm and associated parts that in conjunction with the above feature it may be removed and replaced at a moments notice.

A further object. is to provide a simplified means for eliminating the rocking motior of the diaphragm so frequently experienced in pumps of this type.

Another object is to provide an assembly of pump units in simplex, duplex, triplex or other multiple arrangement having a common supporting structure and operating mechanism and which will enable each pump unit to be inspected or repaired without disturbing the other units in any way.

Other minor vobjects will be hereinafter set forth in the accompanying detail description.

For full comprehension, however, of my invention reference must be had to the accompanying drawings in which similar ref erence characters indicate the same parts and wherein: i

Figure 1 is a front elevation of the triplea assembly of my improved pump unit;

Figure 2 is a vertical sectional view taken on line 2--2 Figure 1, illustrating the discharge section of the pump in operating position;

Figure 3 is a similar view to Figure 2 i1- lustrating the discharge section thrown open;

Figure l is a transverse sectional view taken on line #1 -4s Figure 2;

Figure 5 is a transverse sectional View taken on line 5 5 Figure 2;

Figure 6 is a detail sectional view of the adjustable( eccentricV means forming part of the diaphragm actuating mechanism, the section being taken on line 6 6 Fig. 7

Fig. 7 is an elevation thereof taken at right angles to Fig. 6; n

Figure 8 yis a sectional view of one part of the eccentric means, the section being taken on line 8 8 Fig. 9;

Figure 9 is an elevation thereof taken at right angles to `Figure 8;

Figures l() and 11 are detail elevations of the connecting rod forming a part diaphragm actuating mechanism;

Figure 12 is a sectional view taken on line 12 12 Figure 13;

Figure 18 is a detail elevation of another part of the eccentric means;

Figure 11i is a detail fragmentary view of one of the bolts for securing the sections of each pump unit together; y

Figure 15 is a detail sectional view of the `delivery valve; and

Figure 16 is a detail sectional view of the suction valve.

The accompanying drawings illustrate the preferred embodiment of my invention in triplex arrangement. This arrangement comprises three pump units; supporting structure and driving mechanism, the supporting structure and driving mechanism being common to all three units.

The supporting structure consists of a bed of concrete or timber upon which a pair of parallel spaced channel irons 2 and 3 are laid in horizontal alignment presenting flatfloor surfaces 4 .upon which the pump units are positioned, the space between the channel irons accommodating the suction connection of each unit. Standards 6 and 7 are mounted at opposite ends of the channel irons and having journalled in their upper ends a hollow steel shaft 8 constituting a part of the mechanism for actuating the diaphragms of the pump units. Before describingl this mechanism, however, I shall describe in detail one of the pump units, all of which are constructed alike.

The casing oit each unit which in the main is substantialbv cylindrical in form is divided into three parts viz` a base section l0. an intermediate or discharge section l2 and a top section 13. rlhe base section which contains the suction chamber le? consists oil a surrounding' side wall l5 and a bottom 18. the side wall having externalv circumferential flanges lli and il" respectively located at its upper and lov-'er ends, the lower Aflange l? being eoinl'iarativelv heavy and bolted to the channel irons f2 and 3. rlhe bottoni 1S is provided with a downwardly oll'set central portion lf) havinnv a suction opening' Q0. the offset constituting` a socket in which a removable ring 2l is snuglyv niounted. the ring' having an annular groove 22 in its top side in which a hard rubber graslet is seated. This {gasket-projects above the top-ot the ring' and forms a seat tor the `srravitv valve Q4 Controlling the suction opening:

Vthe suction valve comprises a comparatively,7 hard rubber disc Q5 which is clamped between tivo metal parts and 2'? bv a bolt 28 and adapted when in position closing` the suction opening to rest upon the gasket itsdiameter being substantiall;v the same .as the outside diameter of the gasket. It mayv be found desirable, however, to eluninate the rubber disc 25 and allow the metal part 2 to rest upon the gasltet.

In order to pievent complete displacement of the valve from the suction opening its opening; and closing` movements and to ensure its proper seating the lower n part Q6. which is ot disc-torni es indicated at QS) is expended downwardlpv in the 'torni ot three radial ribs tapered to a blunt point as at ll. the length of the ribs being' sinlicient lo prevent complete displacei'nent from the s iori opening when the valve is at the estreme upper end ot' its openiimmovement.

'lfo enable-the casing` to be thrown onen at a niouwnts notice tor thepurpose ot' jerniittiinr easv aecessibilitq.'Y to vthe*diaphragm und other vital parts. the intern'iediate and top ksections of the casing. the diaphragm and that part o' the means For transmitting' motion to the latter which is located within such sections compose a unit which is hinged upon the base section and which .mav be swung; to the .position indicated in Fie;- nre Swith little or no disturbanceoi the relative.positioning of the working* parts.

To 4this end the lower end ot the discharge section is provided with a radiallv projectinp; lug` l0 which is hinged between a paiA -Ioi iipturned lue'sll on the base section as at'liQ, `The location of this hinge rnvav be Varied to meet conditions without departing from the spirit of the invention but the preferable location is diametricallv opposite the discharge opening 43 and in a plane perpein'licular to the sha'lt 8. illhen in closed position the discharge section rests upon the top ot' the base section. an external circ-uiulg'erential flange 5 beingformed upon the lower end o'l the discharge section and adapted to bear upon and Vhe clamped to the l'langie lll on the base section. the two ilangies havingy open-ended slots 416 equi-distaul'lv spsceg apart throughout their cirrum'lerenre such slots heiner adapted to rcceive clanu'iing bolts 4l?. rThese bolts ire hinged ali` their lower ends' upon the hase section as at, i and are provided with nuts `l-l. lllhen it is desired to throw open the pump the nuts `ill are loosened aud thebolts dropped to position clear olE the (langes. 'lhe llexilile diaphragm 500 which divides the interior ol' the casing' into suction and deliver)7 chan'ibers indicated at 50 and 5l; respectivelvfis secured to and extends across the lower end of the discharge section and is movable in unisorl therewith 'where the pump is thrown open. lt is secured adjacent its periphery upon an inwarillv eritonding continuous 'thingie 52 lormedvintcgralljf with the lower end ot the discharge section-by a clampingring' 53 bolted to the flange as at 54. the inner Vedges of the `'flange and ring; beine' rounded oli as at 55 to reduce, as tar as possible, wear ol? the .diaphragm at this point. Communication between the suction and deliverj7 chambers 5l) and 5l is. effec-ted through an opening' (lo. hereinafter referred to as a deliverv peir ing. located at the centre of the diaphragm and controlled b v a ,Qravitv valve, (il. 'llhis .ipeningz li() univ he made ot' a diameter suflici'eutlv lary/fe to permit. otI the withdrawal oi the suction valve llnrethroue'h (see Fie;- ure 2) but while this is preterable it not essential owing;V to the construction and arraiin'ei'nent o i" parts which enables the pump casim` to be thrown open. The deliverv with its seat is somewhat similar iii tion to the suction ruhe and seat. y ioriner valve consists olE a hard rubber liso (5:2 interposed between iuetal parts 62% and Gil. the whole being secured b v a bolt The dis(I 2 is ot' ureater diameter than either oit the iuetal par and. when in position closing the deliverv oponiu'. is adapted to bear upon a hard rubber ,Gasket rinfr GG forming the valve seat. This t(gasket ring; is mounted on an annular groove 57 in the top of a metal ring (SS surrounding the deliverv opening in the diaphragm and cooperating with asecond rine- (i9 located on the underside ol: the latter in reinforcing' theV portion ot the diaphragm surrounding the opening. rlhe peripheral edges ot Athe rings are rounded oli as at to reduoewear on the liaphragin.

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These rings also serve to connect the means for actuating the diaphragm to the latter.

This actuating means consists of an eccentric 71 mounted upon the shaft 8 and rotatable therewith, av connecting rod 72 one end of which terminates in a collar 73 adapted to encircle the eccentric, and a oke com risin a cross-head 74 and elon` Y P g gated bolts 75 and 76.

The opposite ends of the bolts are of reduced diameter and threaded, the lower ends being passed through the rings 68 and 69 and having nuts 90 clamping the latter and the diaphragm thereto. The upper ends of the bolts are extended through vertical openings in the cross-head at opposite ends thereof and are secured to the latter by nuts 77.

The cross-head isof substantially oblong form and its ends are slidably mounted in vertical guideways 78 in a cylindrical eX- tension 79 of the casing top section 13 so that a straight up-and-down movement is translated to the diaphragm thereby eliminating the rocking action of diaphragm so t)frequently experienced in pumps of this Ype- In` order to provide a connection between the cross-head and connecting rod 72 which Vmay be readily disconnected when it is desired to open the pump casing the top of the cross-head has an upwardly extending lug 91 the lower end of the connecting rod is forked and straddles this lug and a pin 92 is passed through aligned openings 93 in the lug and the arms of the fork, displacement of the pin being prevented by cotter pins 94 or other suitable means.

In view of the foregoing it will be seen that the preliminary steps necessary to the opening of the pump casing are few and simple, the bolts 47 securing the base and discharge sections together being removed and the pin withdrawn, after which the unit comprising the discharge section, top section, diaphragm and associated parts may be swung to the open position indicated in Figure 3.

The top section 13 is rigidly secured to the discharge section by `bolts 9 In order to permit of adjustment of the throw of the eccentric the latter is divided into two parts 80 and 81. The first part 80 censists of a sleeve encircling the shaft 8 and adapted to be connected thereto through a clutch 82 or other suitable means, such sleeve having a circumferential flange 83 adjacent its reduced end 84 and the periphery of the latter being eccentric to the axis of the shaft. The second part 81 is in the form of a collar having a flange 85 and an opening 86 eccentricall)7 disposed relatively to its circumferential surface 87 the opening being slightly greater than the eccentric end 84 to permit of the mounting of the collar thereon. The collar 73 of the connecting rod is adapted to be interposed between the flanges 83 and 85 in .position encircling the portion 87 of the eccentric collar 8l, the parts being maintained in their respective positions by a plate 201 fastened to the hub 84 of the eccentric 80 by cap screws 202. This plate is larger in diameter than the hub to which it is secured and its face adjacent thereto is provided with a circumferential rib 203 which is adapted to press the eccentric part 8l into contact with eccentric part 80. This serves to preventstrain 0n the means for interlocking the eccentric parts so that they rotate in unison. This locking means is construct-- ed and arranged to permit of adjustment or the throw of the eccentric by a turning movement of the eccentric part 8l upon the part 80. The locking means consists of a pin 204 mounted in a socket 205 in the eccentric 8l and adapted to iegister with any one pin having a reduced end 207 which is extended outwardly through an opening 208 and having a ingerhold 209 which enables the pin to be pulled completely out of a socket 206 in the part 80 when adjusting. A spring 210 encircling the reduced portion of the pin and located with the socket 205 yieldingly maintains the pin in position in the socket in the eccentric 80 in which it has been positioned.

To adjust the throw of the eccentric the cap screws 202 are loosened sufficiently to allow the eccentric part 81 to be turned. The pin 204 is then withdrawn from its socket in the eccentric part 80 and the part 81 turned until the desired eccentricity is obtained. Figures 6 and 7 illustrate the parts in a neutral position in which the eccentricity of one part relatively to the shaft 8 is neutralized by that of the other part. From this position by turning the part 8l in a clockwise direction the throw of the eccentric unit is increased commensurately with the extent of such movement.

0 pc ra tion.

In the operation of each pump unit upward movement of the diaphragm produces a partial vacuum in chamber 50 which lifts the Suction valve 24 off its seat and the solution is sucked into such chamber. On the downward movement of the diaphragm the solution which has been admitted to chamber 50 forces the valve controlling the delivery opening off its seat and passes through the opening into the delivery chamber 5l from when it is discharged through the discharge opening. Independent clutches for effecting connection between the driving shaft 8 and each ofthe pump units are provided so that operation of each may be stopped independently of the other.

What I claim is as follows:

1. In a diaphragm pump a casing divlded into a pair ot sections hingedlyv connected together, said sections having abutting` edges, means lor clamping the said sections together with their edges direct y abutting each other; a diaphragm disposed across the casing adjacent the plane et said division with the circumferential edge ot the diaphragm located within'the inside diameter ot the casing, and means tor securing the diaphragm upon one ot said sections independently ot said abutting ecOes.

2. ln aI diaphragm pump the combination with diaphragm actuating means and a lit-ed easing section containing a suction chamber, ot a unit hinged upon the top orc said section and movable to position exposing the interior thereof, said unit. consisting of a` casing s 1ction containing ay delivery chainber, a diaphragm mounted upon and extending across the lower end ot said last mentioned casing section and having a central opening adapted to eitect communication between the chambers when the unit is in position resting upon the top ot the tiXed casing sect-ion, a valve controlling said opening and means contained within the movable casing and adapted to transmit motion from the diaphragm actuating means to the diaphragm. 1

3. In a diaphragm pump the combination with ay casing comprising a fixed section and a movable section hinged upon the liXed section, a diaphragm carried by said movable section. means tor actuating said diaphragm, said means being located partially inside and partially outside of the movable section, and means effecting a. detachable connection between the inside and outside portions ot said actuating means tor the purpose set it'orth. t

et. In a diaphragm pump a. cylindrical casing having a closed top with. a central opening therein and guideways adjacent said opening, a diaphragm dividing the interior thereot into suction and delivery chambers, a rotary driving element` means ttor translating rotary movement ot' the element into reciprocatory movement ot the diaphragm and a crosshead movable in said gnideways tor preventing rocking ot the diaphragm, rings positioned on opposite sides ot the di a.- phragm and elongated bolts having their opposite ends respectively connected to the cross-head and the rings, substantially as described.

5. ln a diaphragm pump a. cylindrical casing divided into two sections one being fixed and the other movable and hinged upon the iixed section, the movable section adjacent its lower end having an inwardly extending annular flange, a diaphragm, means securing the diaphragm to the underside of said flange and dividing the interior of the casing into two chambers, and means detachably securing the sections together.

5. ln a` diaphragm pump, a casing having oppositely disposed guidewa'ys at its upper end, a suction inlet at its lower end and a valve controlling said inlet, a` flexible diaphragm mounted within the casing in position dividing the interior ot the pump into xsuction and delivery chambers, said diaphragm having a central opening, a valve controlling said opening, and means for reciprocating said diaphragm, said means consisting of a yoke comprising a pair ot elongated bolts having reduced ends` a pair of rings located on opposite sides ot said diaphragm in position encircling the opening thereon, means securing the rings and diaphragm upon the lower ends ot said bolts, a cross-head secured to the upper ends of said bolts and slidablc in the guideways on the casing and means to impart reciprocatory movement to the said cross-head.

7. n a. diaphragm pump the combination with a casing comprising a vtiXed section and a movable section hinged upon the lixed section, al diaphragm carried by one ot said sections, means for actuating said diaphragm, said means being located partially inside and partially outside ort the movable section, and a one point detachable connection between the inside and outside portions of said actuating means, said inside portion being movable as a unit in unison with the movable section when the latter is swung upon its hinge.

S. ln a diaphragm pump, a casing having oppositely disposed guideways at its upper end, a suction inlet at its lower end and a valve controlling said inlet a flexible diaphragm mounted within the casing in position dividing the interior ot the pump into suction and delivery chambers, said diaphragm having a. central opening, a valve controlling said opening, and means for reciprocating said diaphragm, said means consisting ot a yoke comprising a. pair oli elongated bolts having reduced ends, a pair of rings located on opposite sides of said diaphragm in position encircling` the opening therein, nuts securing` the rings and diaphragm upon the lower ends oi. said bolts, a cross-head secured to the upper ends of said bolts and slidable in the guideways on the casing, a shaft, an eccentric on said sha-tt, and a connect-ing rod effecting an operative connection between the eccentric and crosshead, substantially as described.

ln testimony whereof l have signed my name to this specification.

MALCOLM B. SAUNDERS.

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