US1717694A - Pump - Google Patents

Description

June 18, 1929. M. KRAuT 1.717.694

PUMP;

-Filed Aug. 26, 1926 2 Sheets-Sheet 1 INVENTOR Z A B//%Z7/% A TTOR/VZZ' Y M. KRAUT' June 18, 1929.

PUMP

,F'iled Aug. 26, 1926 v 2 Sheets-Sheet 2 11v VENTOR 7% A TTORNEY Patented June is, 1929.

UNITEDTSTATES 1 MAX KRAUT, or SAN FRANCISCO, CALIFORNI'A,1ASS1ZG1\I0R o E x m -b SAN FRANCISCO, CALIFORNIA. I

PUMP.

Application filed August 26, 1926. Serial No. 131,606.

either centrifugal or positive pressure pump,

due to its liability of cutting out thebearings.

One of the principal objects of this invention is to provide a construction so designed as to prevent while in operation the gritty material from working into the bearings, thus obviating therapid wearing of the bearings and destruction of the bearings and shaft from this cause.

, Another object isthe designing of a pump to handle gritty 0rsl1my'material containing designed as to reduce to a minimumthe liability of the same becoming air bound ;-to provide a pump theshaft of which is capable of being disposed either horizontally or vertically, andwhen in either position, the operation of the runner of which precludesthe.

gritty material from attacking the bearing or shaf.

Other objects are the designing of a simple and economical construction arranged to permit a ready and quick replacement of worn parts or the adjustment thereof, and to pro- 7 vide a pump wherein is utilized to the fullest extent the power applied towards its.

object.

Vith the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the ac- ,companaying drawings and pointed out in the claims hereto appended; it being under stood that various changes in the form, proportion, size and minor details of construc- 'tion within the soopeof the claims may be resorted to without departing from the spirit or sacrificing any of-the advantages of the invention. 7 r f Referring to the drawings forming a part ofthis application-- Fig. 1 is a longitudinalcentral sectional view through'the preferred embodiment of 'my apparatus.

Fig.2 is a view in elevation of the runner as being removedfrom the casing.

provided with the conical end, and illustrated Fig. 3 is a vertical sectional view through the runner taken on lines of Fig. 1.

line t-4 of Fig. 1. Y i

c Fig. 4 is a vertical sectional View taken on I, In the drawings, wherein like characters of reference designate corresponding parts throughout the several v1ews,,1 is a base upwardly from which extend the bearing arms 2 and the shell supporting arm 3. The arm 3 mounts a cylindrical runner shell-4 having a' r flanged edge 5, and connected with said runner shell 4; is a hollow'conical shell body 6 inwardly from the; inner surface of which,,to- -c ward the center of the runner shell 4, extends I i y i iml'fiange 7. The shell body 6 and air or gases in the'solution, the pump be ng so bearing arm 2 and throughithe shellbody 6" i and runnershell 4 is abearing sleeve 8 carrying at its opposite ends the bearingsv 9 and 10.

The bearing arm 2 at its upper end also carriesa bearing 11, in line withthe bearings'9 and 10, and in said bearings is 'rotatably mounted a power shaft 12 carrying a power pulley 13 between bearings 9 and 11. The shaft 12 extends tliroughthe sleeve 8, as illustrated in the drawings. a i 1 i Communicating with the shell body .6 a

fluid inlet lehthe same discharging into the space 15 between the sleeve 8 and flange 7,

and the fluid passing endwise from said space through a number of openings 16, illustrated I in detail in Figsa3 and 4. i Bolted, to the flange '5 of the cylindrical runner shell is a conical shell extension 17,,

the-apex ofpwhich is provided with a disk charge opening'18 to the fiange 19 of which is bolted the elbow ofa discharge pipe '20..

Keyedas at'2l to the end of the shaft 12 and positioned within the conical shell17' is a hollow conical runner extension22, the peripheral surface of which lies parallel with the inner surface of the shell 17 and carries a plurality of helical ribs 23 extending from the apex to thebasethereof, Theextension 22at its base is secured to the side wall 24: P

of a cylindrical runner 25 of the conventional closed type; The runner 25 rotates within the shelld as in Fig. 1, andbetween its walls 24 and 26 is provided with the usual blades 27,

the inlet thereto being through the openings 16 into the center of the runner and the discharge therefrom being peripherally of the runner between the wallsl? and 22. From the rear face of the runner shell wall 26 extends a flange 28 disposed parallel with the wall 6 and provided with a flange .29 dis posed parallel with the wall 26 of the runner.

The wall 24 adjacent'the inner periphcryof j e the conical extension'22 is provided with a I plurality of spaced drain'ports30, Fig. '1.

The inner surface of the wall of the extension 22 is substantially parallel with the outer surface and flarestowards the base of the conical shell. 1

In p n, the pipe or inlet 14} is connected with the fluid'supply to be pumped and the elbow to a placeof deposit or delivery to receivethe pumped material. The pulley 1 13 is rotated to revolve the runner'25 in the direction of the arrow, Fig.3,"and such move- 'ment' causes a rapid-rotation of the runner 25. and its conical extension-.22. This act on :causes the fluid {t0 enter'the space 15'and through openings16to pass into the runner I 25. The velocity andcentrifugal forceim- -parted tothe fluid by'the vanes 27 forces the fluid towardsfthezperipheryof the runner ,andthrough the annular space between the 1 V 'baseof' the conical extension 122'and the peripheral wallof the, runner where it is picked up by'thehelicalribs 23 and. con- -veyed towardsthe apexof the shell 17 in the 'space between the walls Hand 22.

Th'e'positive action of the members 23 in picking the liqu'idor fluid-up from the pe-' riphery' of the 1HI1I1BI' prevents the pump from becoming airbound, as this action forces the liquidsfrom the periphery of the runner longitudinally of the conical extensiontowards its apex. This conversion of velocity head into pressurehead is thus very gradual and'positive', the pressureincreaslng towards the apex of the conical extension 22 as the peripheral velocity. decreases.

as illustrated,any'pumped liquid which may enter the same, is when the runner 25 is ro- I ,tated, forced on the inner "surface of the flaring conical extension towards the apertures 30 and finds its way immediately back into a V the runner nearits periphery and part-alres' in'theflow of the incoming feed. If the runner is at a point of rest the conical extension will immediately empty itself on rotation be- 'ing imparted to the runner, thus the tendency is to maintain the bearing 10'clear of the pumped fluid at all'times during the operation of the device. 7

Should it be desired that the installation be mounted-with the shaft 12j in a vertical position and the runner 25 carried by the upper end'thereof, the flow offluidinto the hol- By making the conical extension 22 hollow,

low portion of the conical extension 22 will be precluded by the intrapped air in the upper end of this extension.

It will be readily apparent that it is the combination of the hollow conical extension I lying'in spaced relation forming afluid passage and the inner surface of the wall of the inner member flaring toward its base, a shaft projecting into'the hollow portion of the inner of said members: and rotatably mounting the same, a bearing for said shaft located withinthe hollow portion OfSiLlCl inner hollow member, a fluid outlet' -leadi-ng from the apex of the outer of said members, a pump runner at the base of the inner member provided with a center inlet and a peripheral discharge, the latter communicating with one end of the fluid passage, a connection between the inner wall surface of the inner member and the runner, a runner casing provided' with afluid inlet, a helical rib carried by the inner of' said conical members, and means for rotating the 1 conical member mounting said rib. I Q

2. A pump comprising a conical shell provided at its apex with a fluid outlet, a conical member rotatably mounted within said shell I 'with' its wall in spaced relation to theshell wall, a helical rib carried by the conical member and extending fromits base to apex,

means for feeding fluid under pressure to the base of the conical member, and a hearing for saidrotatablymounted conical member concealed within the conical member, the rotation of the conical membermaintaining the fluid'pumped in a moving direction away from said bearing. I

I 3. A pump comprising a conical shell providedat its apex'with a fluidoutlet, a hollow 'conic'al member rotatably mounted within saidshell with its wall in spaced relation'to the shell wall, a helical rib carried by the conical member and extending from its base to apex, means for feeding fluid under-pressure to the periphery of the base of the conical member, and means for rotating the conical member, the inner wall surface of the'hollow conical inner member flaring toward said fluid feedwhereby fluid entering the inner hollow conical memberis discharged by centrifugal action from its base;

4. A pump comprising a conical shell provided at its base with a fluid inlet and'at, its

apex with a fluid outlet, a tubular bearing sleeve extending axially into said shell and terminating short of its apex, a hollow conical inner member rotatably mounted within said shell with its wall in spaced relation to the conical shell wall and overlying the tubular sleeve, a shaft rotatable in the bearing sleeve and mounting the hollow conical member at a point inwardly removed from its apex, the inner wall surface of the hollow conical inner member flaring toward its base and communicating with the fluid inlet,. and e a helical rib carried by the'surfaee of the inner 1 0 conical member. I c

In testimony whereof I have signed my name to this specification. i

, MAX KRAUT.

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