US1196758A - Pump. - Google Patents

Description

D. W. BLAIR.

PUMP.

APPLICATION r1151) SEPT. 13, 1910.

Patented Sept. 5, 1916.

2 $HEETSSHEET I.

WITNESSES f ATTORNEY D. W. BLAIR 1.:lt011tmlhupt. 5, 1916.

2 SHEETS SHEET 2 WITNESS/f5 ATTORNEY navm w. imam, or New Your, 11

PUMP.

Specification of Letters Intent Patented'S eplt. 1916.

Application filed September 18,1910. Serial No. 581,848.

To all whom it may concern ZBe it known that 1, DAVID Bmm, a citizen of the United States,and a resident of the city, county, and State of New York, liavelinvented a certain new and usef provementzin- Pumps, of which the followa specification; v

and especially to theclass of pumps, inm tended for pumping acids or acid solutions. Oneof the objects ofthe invention is to provide a pumpiwhich will have a very high j eificiency and w'hose parts are so combined. y that theymay lie most readily and easily I the shaft 16 and are held in their-spaced relation thereon by providingonewith an outassembled andidisassembledf afteridescription. Y 7 fiiIn the accompanying drawings: Figure l is avertical section of a pump embodying thepresent improtrements. Fig. 2 is a hor1- :z ontal-secticn' on this line 22 of,Fig. l.

' Fig. 3, is a detail" t'iew of the impellers and a portion of'theixl shaft. Fig.4 is a detail viewof the division and cover .plates.

The same characters of reference designate the same parts in the several views.

. ."A designates a suitable framework which be .of any suitable shape, size, material .an 5 construction. :bodies abuse 11 and a superstructure 12 which latter has a space 13 within which the pump casing B, is, mounted, and a separate [space- 14 which receivesnthe pulley 15 by which the pump is driveri' from any suitable a source of power. The pump casing B is of any suitable eonstruction and as already-stated it is mounted in the space 13 and is supported from the base 11.

a The impeller shaft 16 is suspended from its bearings 17 and 18 in the frame and extends into 'the impeller chamber 20 of the pump casing 13,130 or nearly to the bottom of the latter. Upon it are mounted two impellers G and D, which are spaced apart thereon and are arranged between the suction inlet 21 and the outlet 22 with which the casingwis' provided. a The casing referred to is preferably formed to provide a tank or vat 23 having the suction inlet 21 and an overflow 24 near its opposite ends, respectively, and its wall rpbelow saidtank or vat is formed to provide annular channels 25 and 26 which are cm {I operatively mlated to the impellers, as will be more clearly understood from the hereinullm is invention relates to rotary pumps, .1

Otl ier objects will appear from the heroin- As here shown it emafter description. The .outlet port 22'is connected to the channel,26.

' Between the tank or vat 23 andjthe impeller receiving portionofthei casing, the 60 atter is formed to provide=a step bearing, having inwardly-inclined'walls 27 and 28 and an intermediate platform 29. Below thisit= is formed withaIsecond bearing 30 with similarly, inclined walls31 and 32, and 65 below the, latter it has a thirdbearing 33 with an inwardly inclinedwall 34. Its lateral walls are formed to provide openings or orts 35, '36 and 37. I

he impellers C and D are-mounted on 7 wardlyextending and the other vwith an inwardly extending me1nber.-'a s 40{and 41 reof them isseated against the shoulder of the other. The inner impeller C has its hub 43 mounted against'a nut Men the end of said shaft, whereby it is held 'against inward g movement on the shaft. Each of these impellers comprises an inner wall 45jand an outer wall 46, the latter preferablyinclined outward from the shaft and having an opening 47 around its hub for the'inlet of liquid to the space 48 between said walls. Curved vanes or wings 49 radiating from the hub, are disposed in said space 48- and-serve by their centrifugal action to throw the liquid out from the impeller through the open pe- 90 riphery of the latter and into the adjacent channel in the pump casing. 1

A hollow division plate E is mounted in the space between the two impellers, This division plate E is composed of inner and outer members 50 and 51 Which are mounted on the seats or bearings 30 and 33, respectively and are connected with each other by lugs or webs 52, whi h; are spaced apart to provide openings 53 o register with the ports 36 and thus serve as a means by which the interior of the division plate has communication with the channel 25 The interior of this division-plate also has communication with the interior of the impeller C' by means of an opening 54 in its lower wall, which registers with the opening 47 in the outer wall of said impeller.

A covering plate F, having a peripheral fiange 55 at its outer-edge seated upon the 110 platform 29 is mounted in the openingflea'ding to the impeller chambers-2030f the pump casing, and isvprovi'ded with an opening 56 of'tlie upper impeller. i -Thisefbvering plate has"'i n wardly extending lugs 57 which, as most clearly shown in Fig. 4 are seated on which registers with the .,in let opening t7 the outer member 50 of the division plate,

35 in said. casing-- It will be noted that the impellers and the'flatter;

These lugs 57 are arranged to provide openings 58 by which the interior of the impeller D has communication with the channel '25 of the. pump. casing tl n gh the inlet ports body ofthe' coverplate and the inner wall of the division plate are eaeh'shown as 7 being concave toconform t0 the illustrated convex 'su'r'fa'ces of the 'impellers'pres'entedthereto, respectively, and that said coverand division plates are fixed with relation to the are free froin'cont act with Theparts are removably secured in opera tive relation by'means of rods 60 whose lower ends are .seated in sockets 61 withwhich the pouter surface of the covering plate is pr0- vided, while their upper ends 62am pointed .and'seated in holding devices-63jadjustably secured 'to' the web Orwell lZ'of the frame.

These holding devices are shown as screws. whose heads greiprovided witlr 'seats'fii for. the pointed ends of the rods,- the shanksofsaid screws being' mounted in thread-ed Qapert'u'res 65 insaid Wall; having a length :suclrasto prowde a clearance-space (36 when thefscrews are engaged with. the rods, this clearance space, zidaptrng thescrew to be moved out of engagement withithe rod;

It fwill be noted'that whenfthe parts are assin'bledin thefpositi'onsdescribed acid or other liquid to' be pumped,"which may be *poured into the tanlcfor vat 2-3 or find its j-wayj thereto -through the suction inlet 21, will-be drawnby the-impeller D and forced out into the channel 25 and. thence, by the eombined'pressureiof the impeller'D and the suction the impeller C, will be drawn through the port 36 into division plate E and thence'into the impeller by which it will be forced out'into the channel 26 and finally through the outlet As a result of this-combination of parts a pump is pro 50':

high power. It will also be noted'tl'iat the parts maybe Very readily assembled and duced which is capable of developing very when assembled are securely held in their proper positions. It should be here stated that the described bore-ling of the walls ad- I jacent to the seats forthe cover plate F and the co rresponding tid plates, wh ch pellerj' the impeller Dis next forced until its hub engages the hub of the impeller C; and after this has beenvdone the cover plate F is forcedto its seat and is secured by the holding rod and holding devices (5-3. in disassembling the parts the l'iolding' devices 63am adjusted into their sockets until the rods'60 are freed and. when this has been done the parts can be readily removed for cleaning purposes, renewal or repair or: for

any other purpose.

vision is madeffor renderingflthein acid proof. The-cover and divisionj-p lates and.-

the impellers, and their parts which come in contact w th the acid also are suitably made proof against 'the sauie by forming;

them of. lead' orother'aciil-proof material or by lining them ith *an acid-proof "material This is also 'trueof 'course of the pumpcasi'ng;

' Attention is calledtothe fact that in the illustrated embodiment of the invention-the impellers are shown as being free from contact with the cover anddivision platesand In order to enable the parts of the pump which are in contact with acid or with acid. solution, to resist theaetion 'thereof, when .the pump is employed for such material, the i impeller shaft 16 and the rods (:01are lined: with acid proof material, as indicated at T0; and 71 respectively, or othcr: suitable proalso with the pump casing". They therefore operate without friction... In fact it will be noted that there are nomoving-parts in con-' tact with stationary, parts. within the pump.

Hence heating due tofrictional ,contact'lie tween stationary andf moringparts isfieri acid, .as will be" readily understood It is believed that-the construction; opera ti'on and advantages'o-fa the invention will Itirely overcome. Thisis anfadvantageparticularly when the liquid being pumped 15 an;

be clearlycomprehemled from the foregoin a 0 b description and it should be noted that the invention in its broader aspectii is not re strict-edto the (lQtflllSfi'llllStlfitCd and may be varied with respect to such details witbout departing from its spirit or the scope of the subjoined claims. V

. Ilrving thus described the invention what is believed lzo'hc. new and desired to be secured by letters-Patent, is:

a l. In a frot by piimp, a casing 'having' spaced passages, one of the passages being provided with spaced-inlet andoutlet ports,

the wall of the-casing having a seat between 1 said ports, the other passage having a. port, the casing having a seat between the latter port and the-outletport 0f,;,'the first mentioncd passage, a'division plate mounted'on said seats and? internally having communication with the first mentioned passage through the outlet port of the same, an impeller-chamber above and division plate, an

impeller chamber belo said diyision plate,

an impeller mounted in each of said chambers, one of said impellers having communi-- cation With the first mentioned passage through the inlet port of the same and the other impeller having communication with the other passage through the port to the same, the last mentioned impeller and the division plate having communication with each other, and the casing having a liquid inlet to the first impeller and a. liquid outlet from the second mentioned passage.

2. In a rotary pump, a casing having spaced passages, one of thejpassages being provided with spaced inle tand outlet ports, the wall of the casing havmg aseat between said ports, the otherpassag ha'ving a port, a casing having a seat between the latter port and the outlet port oi the first mentioned passage, a division plate mounted on said seats and internally having 00111111 11 1: cation with the first mentioned pasage through the outlet port oflfthe same, the wall of the casing above the division plate resting on said seat, an impeller chamber betweenr-nid division plate and said cover plate, an impeller chamber between said division plate and an end of the casing, an impeller mounted in each chamber, one of said impellers having communication with the first mentioned passage through the inlet port to the latter, and the other impeller having conununication with the other, as sage through the port to the same, the ast mentioned impeller and the division plate having coinm'uuieation with each other, and the rover plate having an aperture leading to the first mentioned impeller.

3, In a rotary pump, a casingprovided with a well in; the, upper part thereof and having an inlet communicating with said well, said casing provided with spaced pas;

; Sag below the welha hollow division plate 1 mounted between said passages and having an. i'nlet and an outlet, a'cover plate mount- T ed between the well and the division plate and forming with the division plate an impeller chamber, a second impeller chamber being formed between the division plate and he bottom of the casing, the cover plate navin an o enin between said assafies and. having an inlet and an outlet, :1. cover plate mounted between the ellv and the llVlSlOIl plate and formmg with the division plate an impeller chamber, a second impeller chamber being formed between the division plate and. the bottom of the casing, the cover plate having an opening pommunicating with one of saidimpeller chambers, the said rhainrmr having an outlet communicating with one of sai passages, the other chamber having an inlet communicating with the hollow division plate and an outlet communice ling with the secondv pamage, a shaft, a l 'tv of impellers mounted on said shaft that in said chambers, one of said impellers being disposed in operative relation with the a cover plate seated on the casing and arranged between the well and the portion of the casing containing said passages, said cover plate having an opening through which the well has communication with the latter portion of the casing, the well having an inlet, one of said passages havin an inlet port and an outlet port, the wall 0% the casing. having a seat between said ports, the

other of said passages having an inlet port and the Wall having a seat adjacent thereto, a hollow division plate mounted on said seats and having an inlet opening in communication with the outlet port of the firstmentioned passage, the division plate also having an outlet opening, an impeller shaft,

and impellers mounted on said shaft and arranged on opposite sides of the division plate, one of said impellers being in operative relation with the opening of the cover plate and the inlet port to the first-mentioned passage and the other of said impellers being in operative relation with the outlet openingof the division plate and the inlet port to the second-mentioned passage, the-latter passage having means for the egress of liquid therefromL '5.' In a rotary pump, a casing having a well in the upper part thereof, said well being provided with means for the ingress of liquid thereto and aplurality of impellerchambers formed in the casing below said well, the casingbeing provided with a removable cover plate separate from the shaft support between said well and chambers, said cover" plate partially closing the en trance to the chambers, and impeller-shaft, and a plurality of spaced inpellersmounted on said shaft and in said chambers; the casing also having means for the egress of liquid from said chambers.

6. In a rotary pump, a casing having a well in the upper part thereof, said well be' ing provided with means for the ingress of liquid thereto and a plurality of im'pellerchambers formed in the casing below saidv well, the casing being provided with a cover I plate removably seated between said well and chambers, said cover plate partially closing the entrance, tothe chambers and constructed and arranged for. renio-val wholly sep rate from the operating shift,

a division plate removabh seated on the wall of the asing and arranged between said chambe s, an impeller shaft, and a plurality of spaced impellers mounted on said shaft and in said chambers; the casing also" having means for the egress of liquid from said chambers.

7. In a rotary pump, a casing provided with spaced seats, a cover plate removably mounted-upon one of the seats, a division plate ljtrnovably mounted on the other of the seats, an impeller arranged between said plates, a second impeller arranged inward of the division plate, an impeller shaft extending through said plates and impellers, and carrying the latter, the cover plate having projections engaging the division plate, and means engaging the cover plate for holding both plates in position.

8. In a rotary pump, a casing provided with spaced seats, a cover plate removably mounted upon one of the seats, a division plate removably mounted on the other of the seats, an impeller arranged between said plates, a second impeller arranged inward of the division plate, an impeller shaft extending through said plates and impellers, and carrying the latter, the cover plate having projections engaging the division plate, and means engaging the cover plate for holding both plates in position, said means comprising rods and adjustable holding devices for the rods.

9. In a rotary pump, a casing having inner and outer passages, the outer passage provided with inlet and outlet ports, the inner passage having communication with the pump outlet, a hollow division plate located within the casing between said passages, the said division plate and the bottom of the casing being separated to form an inner impeller chamber, a removable cover plate independent of the shaft support within the casing and separated from the division plate to form an outer impeller chamber, an impeller in the first mentioned chamber and operatively related to the inner passage to force liquid thereinto, the division plate adapted to conduct liquil from the outlet port of'tlie outer passage to the impeller, a second impeller in the outer chamber ar ranged to force liquid into the outer passage, and an opening in the cover plate leading to said second mentioned impeller, a shaft upon which the impellers are mounted. to operate and a support for said shaft.

10. In a rotary pump, a casing having a passage therein, said passage being provided with an entrance, separately formed plates consisting of a covering plate and a division plate removably mounted in said casing at the opposite sides of the entrance to said passage, an impeller mounted in the space between said plates, holding rods engaging the outer covering plate, and adjustable holding devices for sald rods.

11. In a rotary pump, a casing provided with passages, the wall of said casing being provided with an aperture which communicates with one of said. passages and beveled and provided with seats on opposite sides of said aperture, a hollow division plate removably mounted on said seats and having an aperture registering with the aperture of said wall, an impeller above said division plate, and an impeller below said division plaie adapted to force liquid into said pa .-.ages respectively, the said division plate having direct communication with one of said impellers.

12. In a rotary pump, a casing provided with inner and outer passages, the wall of said casing being'oeveled and provided with seats, inner and outer spaced impellers arranged in said casing and disposed in such relation to the passages as to force liquid into the same, respectively, a removable cover plate seated within said casing and having a beveled wall engaging the beveled wall of the latter, said plate having an. open periphery communi. tating with the outer passage, a removable hollow division. plate, seated in said chamber and having a beveled wall engaging the beveled wall of the latter; said division plate having an open periphery communicating with the outer passage, the internal space of said division platen also having communication with the inner impeller, holding rods engaging the cover plate and adjustable holding devices for said rods.

In witness whereof I have hereunto set my hand at the city, county, and State of New York, this 31st day of August, 1910.

DAVID IV. BLAIR.

In presence of FRANK E'ornnnm, J oiIN J. RANAGAN.

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