US2516442A - Turboscrew pump - Google Patents

Description

July 25, 1950 F. E. woLFE 2,516,442

' TURBO-SCREW PUMP Filed June 26, 194'? 2 Sheets-Sheet -1 7 r 77 @l f ATTORNEYS,

// M BY July 25, 1950 F. E. WoLFE 2,516,442

TURBO-SCREW PUMP Filed June 2e, 1947 2 sheets-sheet 2 1 flfazfe INVENTOR ATTORNEYS Patented July 25, 1950 UNITED STATES Pf-ArtNr or;Ficsv TURBOSCREW 'BUMP Fred E. Wolfe, Morgantown, Va.

Application June 26, 1947, Serial No.'75.7,224

1 Claim.

This invention relates to new and useful improvements in pumps and more particularly and specifically to turbo-screw pumps of which the following is a specication.

The primary object' of this invention resides in the provision of an improved construction in liquid pumps in which the operating conditions and pressures cover a vast range principally due to the improved design.

Another object of this invention lies in the provision of an improved pump of a turbo-screw type in which the bearings are lubricant packed and sealed remote from contact with the pumped liquid and other foreign matter.

Still another object of this invention is the provision of a pump of the nature set forth in which proper alignment and Clearance of all working parts are automatically maintained by structural parts.

Still further objects and improvements of this invention are in the provision of a pump as described of an extremely simple, durable and inexpensive design and construction.

Still further improvements and advantages of this invention will readily appear to those skilled in the art when the following description is read in the light of the accompanying `drawings in which:

Fig. 1 is a vertical section of the assembled pump.

Fig. 2 is a side elevation of the propelling ns.

Fig. 3 is a horizontal section taken on line 3 3 of Fig. 1.

Fig. 4 is a horizontal section taken on line 4-4 of Fig. 1.

Referring now to the accompanying drawings Which illustrate the preferred embodiment of this invention and in which like characters indicate similar parts throughout, A designates a liquid containing casing which is open to a constant source of a liquid to be pumped at its lower end and a discharge arrangement from its upper end.

A cylindrical housing I is positioned within the water casing in a tight liquid sealing position about its circumference. The housing I is divided into a pair of concentric chambers 2 and 3 by a circular division wall 4 secured therein concentric with the outer housing Wall.

A cylindrical tube 5, of lesser diameter than the housing I but of greater diameter than the division Wall 4, is formed as a concentric extension from the housing within the water casing.

A circular shaft 6 is disposed centrally from beneath the housing I to extend vertically therethrough into the extension for substantially its 2` entire length. The shaft is secured in place by a stepped shoulder S which abuts downwardly with the housing bottom, and a lock nut N threaded about the shaft extension below the housing I.

The central chamber 3 of the housing I is open into the extension 5 at its upper end and a circular port 'I in the bottom thereof opens into the constant liquid source. while the outer chamber is entirely closed with the exception of a plurality of spaced nozzle-like openings 8 about its upper inner circumference adjacent the inner wall of the extension and one opening 9 in the top of the chamber from outside the extension wall.

The shaft 6 is stepped inwardly at the upper edge of the housing I and again at a spaced distance thereabove. A second cylindrical tube I0, provided with an integrally formed double helical spiral C thereabout, throughout its length, is telescoped over the shaft 6 to rest at a small clearance distance above the housing I.

A lubrication seal and retainer Il is placed about the first shaft step within the tube I0 and a pair of roller bearings I2 are placed at spaced distances about the upper stepped diameter of the shaft bearing against the inner wall of the tube Ill and forming a substantially frictionless bearing for the rotation of the tube I0 upon the shaft.

The upper end of the shaft 6 is threaded as at I3 to receive an adjusting nut I4 thereon, and a screw cap I5 encloses the upper open end of the tube I0.

The final feature of the pump comprises a plurality of radial, spaced, angular impeller iins F formed about the lower end of the tube Ill adjacent the top of the housing I and the nozzle-like apertures 8.

In operation of this pump a small amount of the liquid to be pumped is compressed by a small pump or the like and supplied to the outer chamber 2 through the opening 9 where it builds up a pressure supply and discharges through the nozzles 3 against the fins F causing rotation of the tube Ill and spirals C. As the spirals rotate they lift liquid from the central chamber 3 up ward to the discharge at the upper end of the pump, and liquid is continually replacing that pumped by entering the chamber 3 through the port 1. Air or steam can be easily used in place of the compressed liquid as a motive force.

Thus it may be readily seen that a simplified and eflicient liquid pump has been provided, which is durable and of an improved construction over like pumps now in use.

Having thus described and explained the construction and operation of this invention and with full belief that modifications in size, materials and like general characteristics would not depart from the spirit of this invention what I desire to claim is:

A pump of the character described, comprising a casing, a housing mounted Within the casing having spaced outer and inner chambers, a tube rising from the housing and being spaced from the Wall of the casing providing an outer compartment and an inner spiral lift compartment, a spiral lift mounted Within the inner compartment, said spiral lift comprising a shaft, a spiral formed around the shaft, a plurality of radial impeller fins disposed about the lower end of the shaft adjacent to the top of the housing, said housing having nozzle openings formed directly under the fins, through which water under pressure from the nozzle openings impinges against the fins rotating the spiral lift, the inner chamber of the housing having inlet ports through which Water enters by the action of the spiral lift, the inner chamber communicating with the tube whereby fluid is pumped through the casing.

FRED E. WOLFE.

REFERENCES CITED The following references are of record in the file of this patent: y

UNITED STATES PATENTS 309,856 Gfermany,` Dec. 18, 1918

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