US1675200A - Pump - Google Patents

Description

June 26, 1928.

W. T. SMITH PUMP 2 Sheets-Sheetl 1 Filed April 2, 1927 June26,192s. Y 1,675,200 n W. T. SMITH PUMP Filed April 2, 1927 2 sheets-sheet 2 latented .lune 26, 1928.

narran STATES WALTER T. SMITH, OF (AIJVIESTOIT,v TEXAS.

. PUMP.

.applicationl ined April 2, 1927. vseriai No. 180,524.

lThis invention relates to pumps, more par. ticiilarly to pump casings usedy in connec` tion more particularly with hydraulic (hedging operatings. Heretofore it has been usual to pump up the water carrying solid matter in suspension into the bins of sea-going barges or dredges and allowing the solid matter to settle out. rlhis procedure involves considerable delay.

The broad purposeof my invention is to provide a casing in combinationV kwith a pump runner ork impcller for the purpose of separating, during the pumping operation, the liquidsan'd the solid matter carried in suspension thereby, and more or less concentrating the latter into a solid or semisolid or soupy state and to discharge such concentrate vindependently through one outlet -and to discharge the water or other Yfluid fg through another independent outlet, the concentrate being received in a Suitable bin oi' other storage means. 1

.Further objects are to provide anovel casing having two concentric nearly annular chambers separated by a straining means and having suitable discharges and being concentric with an impeller; to provide in such a casing areadily removable and renewable straineielement,toprovide a sim` ple casing composedV of a plurality of parts capable of-qnick assemblage ,and separation; to provide a novelannnlar band construction constituting theouter annular chamberV and discharge; to combine the strainer lelement and said outer annular band member in such 'manner as to facilitate the insertionV and removal of such strainer element and to confine it against outward distortion; and to provide a suitable runner having specially designed Vanes in combination with the casing formed to provide two periplierally extending concentric chambers divided by a strainer element whereby thel liquid being acted upon willbe forced outward, the clarified liquid passing through the strainer element into the outer .chamber and the more solid material being retained in thek innergchamber and the contents of both of such chambers being acted upon by the pressure-created by the rotation of said runner-.to force said contents of both of said. chambers out of the respective discharges thereof, all of whichobjects among others are accomplished by the construction, com-k bination and arrangement of parts herein- '-lAny usual packingF may after more scribed.

' In the accompanying drawings,'in which only.l several of the possible embodiments of my invention are shown and described for the purpose of illustrating my invention and the practice thereof as by law required, but with no intention of being limited thereto, it being recognized by me that it is `capable of embodiment in a number of other forms. `.Fig. l represents a sectional view of a device embodying my invention taken on line' 1-I-l `of Fig. 2; i

Fig. Qrepresents a sectionalview thereof taken at right angles to Fig. `l, on line 2-2 of said figure; n

.Figa 3 represents a fragmentary sectional view, similar to Fig. l', of a modified casingv construction; and

Figure el, a view similar to Fig. l, of a further modification. i

Referring nowin detail to thev drawings, A designates the rotary limpeller shaft passing through bushing E of end plate B of particularly setforth and de the casing, said runner being,` of course, disposed in the interior of the casing, which casing comprises said end plate B, an opposite end plate Bf', and an annular band element ltffitting against the annular shoulders Il govffsaid end plates with its radially inner side edges and Vbeing held assembledwith said end plates byfany suitable means such as, for instance, screws C extending through said end plates into said annulark memberief f End plate B is provided withan inwardly flaring intake oi',`iiilet D which has.V an axially outward extending internally screw threaded hub orbushing H into whichA the externally screw threaded end of the suction pipe, not Shown, may be screwed, asv usual.

N be arranged about the shaft A inthe bushing E ofy plate B and will be packed `by the gland-nut G as usual. l f Y H Eachwof said plates B and B maybe proy vided with reinforcing radially extending webs such as'J and the said end plates vand annular ineinber 14 will bevof such `material and of Vsuchthiclinessasmay be required by the material being vacted upon and the operating `pressures in Vthe-interior of the casing, whichV pressures in dredging operations usually-.vary from 4 0 to 125 pounds iin i 8V and shoulders 13.

7 `will have perforations of such size as best to the sq. in. The annular band 14 is to be concaved in `its interior face to provide an outer chamber 1 which extends about the casing from a point adjacent to thedischarge outlet 5 of chamber-4 to a point underneath and closely adjacent to said outlet 5 and there is in communication with its and fon each side of, outlet 5 and will havesome provision for radially confining the strainer element v7, for instance, integral cross bars 8 arranged at equidistant points between said shoulders 13 and `arranged in a radial direction closely adjacent to the radially inneruedges of said member 14 and said bars 8 may extend entirely across the i outer chamber 1 or may be of any suitable construction suitable to their function.

The strainer element `7, of relatively heavy perforated sheet metal, is forced into place against said bars 8 and is spread'in a peripheral direction until its ends 7 are in tight `contact with the respective shoulders 13 When the strainer element 7 as a Whole is under compression holding the said straining element tightly against said VAbars Said strainer element suited to ythematerials being acted upon and mayhave imperforate parts which in assembled relation `will register with a the respective bars 8 las illustrated thereby pre-l serving the strength of the `strainer element as a Whole i v `'LIhe shaft A may have a reduced exter-i nelly screw-threaded end 9 receiving the internally screw-threaded hub `10 of the impeller or runner as usual.

Said runner comprises two end plates 11 and 11l having between them curvilinearly disposed valles 127 thezplate 11 having a central intake opening registering with the opening I) in plate B to permit the intake of the materials to be acted upon and the said end plates `11 and 11 and vanes 12 all extend preferably to the same distance radially and will be spaced, as illustrated, at an appreciable distance radially from the straining element "7, such annulartinterva] constitutingan inner concentric concentrate chamber 4, above mentioned,`communicating with discharge 5 asstateol." Y

i The interval between the'pat-h of travel ofthe radial outer ends of the vanes 12 and the straining element 7 Will varylin accordance with the nat-ure of the material being actedupon and to` this endthe particular The operation may bebrie y stated vas follows The impellerrrotates in the direction of the arrow, Figure 2, and draws the Water and matter in suspension through the opening Dand then forces the Water through the strainer element? into `the outer chamber 1 and the solid or semi-solid material radiallyoutward into the chamber 4avherein it is retained by the strainer element 7 in a solidforl semilsolid or sou y Vstate and the materialin bothsaid cham 1ers, beingunder pressure generated by the rotation of lsaid runner and the curvilinear form of the blades thereof is forced outward by said pressure through the independent discharge outlets 2 and 5` respectively of said chambers through their respective discharge pipes, not shown,V to their respective separate points of discharge. Y j i .ln themodified form shown in Figure 3 the operation is in all respects the same asin the prefc'rredform alcove described, and the construction isthe same as in said preferred form except in the following respects: Instead oftheannularmeinber 14, an annulaimember 18 is` vsubstituted said'annu'lar niembe`r`18 having a radially inner `peripheral band "19j ttingagairist annular .shoulders lpf rims 21 supported in lposition by inue radialiY extending bars or struts 22 and similar ra ijally outerstruts formed n-` tegrally with sidefplates Iand I" and ex' tending -in"the interior of saidv plates.'

Strainer elements23 are arranged in an annularjband in each plate L and L and bear against the `equi-distantly spaced radial struts orfbars 22 of the respective Lvplates I and I, said straining elements'23, together with said rims 21, constitutingttlie end Walls of the inner annular chamber 4 and said band A19;constituting the annularly 4outer Wall thereof. `Saidele'm'ent 18 is provided with an annular chamber 17 between said inner band elen'ient 19 and 'said outer part 18, said parts being held spaced 'by radial integral portions or struts 20 permitting between Y them `conununication betweenV said outer chamber 17 and said inner chamber 4 by means of annularly extending communi-` cation passages `16"extending in an axial vdirection .in said plates I and I fronithe straining element around the rims `24L to the respective adjacentends of the annular band element 18 where they communicate through the spaces between the radially out# er struts 20 with the intervals between the spacing struts 2O and so permit commuf' nication between said chambers 4s and ,17 to allow the water .discharged through the straining elements 22to'pass into the outer chamber 17 and be discharged Vthrough its discharge outlet 2.

1n Figure 4' the two previous embodiments are merged in a single'embodiment providing the radial holes in the strainer 7 over the top portion and for roughly two-v thirds of the periphery of the inner chamber t and the lateral holesin thestrainers 28 at thebottom, while the radially7 inner face ofthe imperforate element 19 presentsa smooth unbroken surface on which the solid or semi-solid matter rests and moves in the iinal stages of the discharge.

Having thus described my V invention, what l claim as new and desire to secure by Letters Patent is:

1. A pump casing comprising an endless annular member having its inner face sharp ly concave in cross-section to forni an` annularly extending; chamber in said member, two end plates, and means for removably securing said plates against the respective ends of said member, in combination with an impeller mounted to rotate in said casingwand.

of such diameter as to leave a vdistinct annular chamber between said'impeller. and the chamber in said'annular member, and an annularly extending straining element mounted in said casing and so located therein as to permit communication between said chambers thereof, said casing being provided with two distinct discharge ports respectively communicating with, and permitting the independent discharge of the con.

tents. of, the respective annular-ly extending chambers. l

Q. A pump casing comprising an endless annular member having its inner face sharply concave in cross-section to form an annularly extending chamber in `said mem ber, two end plates, and means for removably securing said plates againstthe respective ends of said member, in combina tion with an impeller Vmounted to rotate in said casing and of such diameter as to leave a distinct annular chamber between said impeller and the chamber in said annular member, and an annularly extending removable straining element mounted in said casing and so located therein as to permit communication between said chambers thereof, said easing being provided with two distinct discharge ports respectively communi-v cating with. and permitting the independent discharge of the contents of, the respective annularly extending chambers.

3. A pump casing comprising an endless annular member having its inner facey ing chambers.

sharply concave in cross-section to forman chambers thereof, said casing being pro-V vided with two distinct discharge Aports respectively con'imuni'cating"with, and permit# ting ther independent discharge ofthe con* tents of, the respective annularly extending chambers.

t. A pump casing comprising anv endless annular member having its linner face sharply concave in vcross-section to form an annularly extending chamber in Vsaid mem ber and provided with stops extending` ax# iallyv from its inner face, two end plates, and

means for removablysecuring Vsaid plates against the respective ends of saidA member, in combination with an impeller mounted to rotate in said casing andL of such diameter as to vleave a distinct `annular,,chamber between said impeller and the chamber in said annular member, and anannularly extending straining element litted in said annular member, confined therein against radial exs pansion by said stops, constituting the partition between said chambers, and permitting the liquid in the inner chamber to be vforced into the outer chamber, said casing being provided with two distinct discharge ports respectively communicating with, and permitting the independent discharge of the contents of, therespective annularly extend- Y 5. A. pump casing comprising an endless annular member having its inner sharply concave in cross-seetion toy form an -annularly extending chamber in said mem-V ber and provided with stops extending axially from itsinner face and formed withv two opposed peripherally. presented shoulders, two end plates, and means for remov ably securing said plates against the respective ends of saidmember, in combination with an impeller mounted to rotate 1n said casing and of such diameter as to leave a distm'ctannular chamber Vbetween said 1mpellerand the" chamber` in said annular member, and an annularly extending straining element removably fitted in said annular member, having its ends in engagement with said shoulders respectively and being under compression and beingheld against radial expansion by said stops, said straining element constituting the partition between faceaok said ,Chambers and permitting the liquid in. the inner chamber to be forced off into the outer chamber, said casing being provided with two distinct discharge ports respectively communicating with and permitting the independent discharge o1A the contentent, the respective annularly extending chambers. n f

6. A pump casing comprising an endless annular member having its inner.` face sharply concave in crossfsection to form an annularly extending chamber in said member, said casing having a further chamber and being formed with an intake, and said annular member being formed with a dischar e outlet communicating directly with t Ve Vchamber therein and with a furtherV and distinet outlet having imperforate walls extending Athrough the chamber insaid member and being 1n direct communication with the other chamber `in said casing,

7. A pump casing consisting of an endless annular member having its inner face sharply concave in cross-seetion to formy an annularly extending chamber in said member, two endplates of unbroken area except for the usual central bore in one to receivethe drive shaftand the intake opening in the other, and means for removably securing said plates against the respective ends of 'said member said member being formed with two independent dischargeoutlets, one of which commnnicates directly with the chamber therein, `:and` the ethernet which is out. oit cemmunieation with said chamber and in direct communication with the interior'of ,said easing radiallyfinward of said chamber.` v.

8. A pump casingl comprising an annnla member having its inner face cupped in cross-section to yform an annularly -extend- Ving chamber and being formed with two independentdischarge outlets, one being in direct` eonimnnication with said chamber means for removably securing said plates to Y said member, each of said plates being formed with an annular slionlders'nucgly Htting within the respective annular e ges of said member.

I n testimony whereof, I have signed my name' to thisispeciicationat New Orleans, Louisiana, this 22 `day of March, '1927` L f WALTER T. SMITH.

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