US1625892A - Vertical-shaft floating pump - Google Patents

Description

Apu A. HOLLANDER VERTICAL SHAFT FLOAITING PUMP Filed May 17. 192

gwvmtoc Cltkouwg Poetica Apr. 2a 1927.

Irrnn NT l 0 PUMP MFG. C0., F BERKELEY, CALIFORNIA, .A CORPMTION @E CALURNEA.

WRTlEAL-SHAFT FLQATING EUR.

Application :tiled May 1T, i926. Serial No. 15.09A@a a. delivery column from the pump and an air valve movable in one direction to admit air to the pump column, when the pump is not operetin A further oblect is 'e device of the char- I acter described, constructed and adapted to introduce an air charge from time to time with the pumped Water.

Another object is a pum for automatically retaining a compresse air body in a Water service tank. Other objects will appear from the draw in s and specifications which follow:

hese objects I attain ln providing a tloat preferably of cylindrical orm l'ieving a centrai hollow tube through which an operating shaft communicates @from e motor mounted on the upper part of the Hoet to drive the centrifugal pump which is positioned under and suspended from the seid doet.

' From the pump e suitable delivery pipe or pipes extends substantially` arallelvvith the said axial tube and above t e motor and through conventional flexible connections communicates with a suitable storage serv ice tank. ln the delivery column l mount one wey foot valve so as to hold water sbove the toot velve when the pump is not opervting and to prevent the return of presser' or Water irom the service tank through the pump discharge column.

@n the discharge column and between the :foot valve end the pump and'above titl fili

. .l `oat I mount an eir inlet valve hemp; o

sprin actuetingy closure edapted to admit enr 'W en the pressure in the pump commi;

is below atmospheric pressure but to close wheneverthe pressure in the pump column exceeds the atmospheric pressure.

By referring to the accompanying drawing my invention will be made clear.

ln the drawing:

Fig. 1 is a vertical section through a conu ventional Well showing the apparatus ot my invention in position therein with s Hoet and iootvalve shown partlyv insect-ion end with a service trink and a ilexiblesection. of the delivery column, on a reduced-scale.

Fig. 2 is an enlarged cross section through the sir inlet valve of Fig. l..

Figi. 3 is a cross section of lig. line lll-dll.

i on the Fig. i is a diagrammatic showing ot my apparatus with a Hoet ot reduced size and with the apparatus lsuspended Jiroin a lpulley end provided with e counter-balancing weicht thereebove.

'llie Wei ht in this case partially counterbalanc-es tlie apparatus suspended in the Well, the remainder of the counter-balenen ing being edected by thedisplacement ci the reduced sized float.

'lhrou hout the heures similar numerals sure in the service tank at ell times, and

Water service connections are shown at l to the house 3.

The inlet connection to the tonk i is shown at 8 and any conventionol dexible connection is shown et 9 which is connected "with a pump delivery column L), and with the tank through the pipe 8.

At 11 is a foot valve allowing Water to rise through the column l0 but closing upon its sost es shown in Fig. i when the ump stops end' it therefore holds the iui and the pressure in the column l0., pipes 9, 8 and tank t.

it L2 is e doet on which is ned the m0 Cil 'understood that these are to be supplied lll ith

with a suitable source of energy, well known but not shown. through automatic or hand operated switches to energize the motor 13 as may be required.

Referring particularly to Fig. 4, where a dont of smaller dimensions is employed, the apparatus is partially counter-balanced by the weight 22 o eratlng over the. ulley 23 throu h the cab e 24, which partially counter-b ances the suspended weight of the apparatus in the wel In Fig. 2, showing the detailed structure of one form of air valve 18, the valve member 25 normally seats upon the valve seat 26 'whemwater is being pumped and falls te the dotted position 27A when the pump is stopped.

. rlihe foot valve 11 is hinged in the body 30 at 31, and when the pump is o erating, the valve 11 pivots at 31 rising o of its seat 32 whereas when the pump stops the valve 11 closes on the seat 32. y

I prefer to arrange the column members l5, 1G synunetrically about the central shaft 119 and therefore prefer to use two such members. In this wa the center of gravity of the entire suspen ed structure is always ren tained in the axial line of theshaft 19 and titl central in the well.

The fioat12 is shown of hollow cylindrical form preferably of sheet steel with `welded or riveted seams and is of such dimansions as will adequately support the entire suspended weight, without sinking bef low the water surface 2.

This float may beV made of reduced dimensions and its deficiency in sustaining power,

- may be compensated for by the weight 22 till are

age tank 4.

shown in Fig. 4, if desired.

The operation is as follows:

'The motor 13 is energized through the connections 20, 21 rotating the shaft 19 and actuating the pump 14 whereby water is forced from the walll, through the members 15, 16, branch pipe 17 raising the lvalve V11. and forcing the water u through the column 10, pipes 9 and 8 an into the stor- When the pump first starts to operate, a

' body of air 1s forced up above the water Surfaces in the members 15, 16 and will v now be compressed in the tank 4 establishing an elastic fluid pressure above the water surface 5. l

When the pressure gauge indicates the desired pressure having been attained, the house 3 mav be served as required by water being withdrawn through the pipe 7. This will eiect a reduction in pressure in the tank 4 and when this has'reduced to a sufficient degree, the motor will affain be energized and the pump operated to deliver more water into the tank 4.

Under the increased pressure in the tank 4, the water body therein contained will gradually absorb the compressed air or the compressed air may leak or be otherwise lost from the tank 4 and its replenishment from time to time is essential to retain a proper elastic pressure to force water through the connection 7 as demanded. Y

By my apparatus this compressed air pody is automatically replenished as folows:

Whenever the pump is stopped the foot valve 11 closes under the ressure in pipe 10 and the body of water elow the valve 11 falls substantially to the level 2.

This is made possible by the external -air pressure acting upon the valve 25, forcing it from its seat, thus allowin the water to fall to thelevel 2 in the mem rs 15 and 16 and thus filling the s ace above the water levels in the said mem ers 15, 16 and branch '17 and up to the foot valve 11 with air.

When the pump is again started this air inthe members 15, 16 `and branch 17 is forced up with the water now being forced f from the pump 14 andAis passed into the storage tank 4. The tank will therefore be recharged with compressed air.

This increment of recharging of compressed air will occur every time the pump is started and stopped. v claim:

1. In combindtion with a vertical shaft centrifugalpump, a float below which said pump is suspended said oat having a tubuar openin therethrough, a motor fixed on top of sai float, a driving shaft connecting said motor and said pump in operative relation and passing through said opening.

2. In combination with a vertical shaft centrifugal pump, a float belowr which said pump is suspended said Boat having a tubular opening therethrough, aA motor lixed on centrifugal pumpa oat below which said pump is suspend said float having a tubuios A lar openirw therethrough, a motor fixed on the assembled fioat, motor and pump to to` of saidbfioat, a driving shaft connecting rise and fall with the water in a. Well, said sald motor and said pum in operative reladischar e column comprising a plurality 10 tion and passing throug said opening, a of deliver pipes symmetrically spaced tank, a discharge column from said pump around sai float and merging into u single and connecting said pump with said tank, discharge pipe above the motor.

a exibie portlon in said coiumn permitting ALADAR HOLLANDER.

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