US1272606A - Centrifugal pump. - Google Patents

Description

.l. D. BELL.

CENTRIFUGAL PUMP.

APPHCATION mu) 001226. 1915.

Patented July 16, 1918.

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J. D. BELL.

CENTRIFUGAL PUMP.

APPLICATION men 0cT.2s. 1915.

1,272,606. k Patented July 16, 1918.

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JAMES D. BELL, 0F SEATTLE, WASHINGTON.

CENTRIFUGAL PUMP.

To all whom it may concern:

I Be it known that I, JAMES D. BELL, a citizen of the United States, residing at Seattle, in the county of King and the State of \Vashington, have invented a certain new and useful Centrifugal Pump, of which the following is a specification.

My invention relates to certain new and useful improvements in centrifugal pumps and more particularly to vertically suspended centrifugal pumps. As many of the features of the invention are also applicable to other forms of pumps using a runner or impeller and depending upon centrifugal force, pressure force or the power of the screw, however, Ido not limit myself to the first mentioned form of pump, but wish to include all kinds of water or liquid elevators and movers in which all or any of the features of my invention may be incorpoi rated.

The primary object of the invention resides in the provision of a self containing pump which, free from all additional parts such as structural steel or timber frames,

' should form a unit capable of being shipped cient in use.

A further object of the invention resides in the provision of a circular pump in which the shaft will be supported from the discharge pipe and all frictional resistances be reduced to the minimum'while the efficiency is increased to the maximum, by the peculiar shape. g

A further object resides in the provision of a pump having a stationary pressure chamber studded with or partly supported by three dams, through which the water flows into the water-way of the pump shell, converting the velocity of the water into pressure, the pump being of such character that it may be received in a smaller casing than others of a similar capacity, the pump furthermore being always primed, as it is submerged in the water.

With these and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel combination and arrangement of parts as will be hereinafter more specifically set forth, pointed out in the appended claims and shown in the accompanying drawings.

Patented July 16, 1918.

Application filed October 26, 1915. Serial No. 57,921.

In the accompanying drawings forming a part of this application and in which like reference characters refer to corresponding parts throughout the several views,

Figure 1 is an elevation of the upper portion of the pump.

Fig. 2 is an elevation of the central portion of the same.

Fig. 3 is a vertical sectional view through the shell and rotor; part of the pipe being also shown in section.

Figs. 4, 5, and 6 are views illustrating bearings in which the rotatable shaft is mounted.

Fig. 7 is a vertical sectional view of the shell and Fig. 8 is a horizontal sectional view of the same.

Fig. 9 is a vertical sectional view of the rotor used in conjunction with my improved construction.

Fig. 10 is a horizontal sectional view of the same.

Figs. 11 and 12 are diagrammatic views showing the course of the water in the shell.

Referring to the drawing the numeral 5 denotes a horizontally arranged shell, the upper end of which is formed with a bearing 6 and the lower end thereof is open and terminates in an upwardly extending annula flange 7. This shell 5 rests on a supportin plate '8. Formed integral with the flange? at one side thereof is an upwardly extending wall 9 which limits the flow of the water in one direction. Communicating with the shell 5 adjacent the wall 9 is a vertically extending pipe 10 through which the water or other fluid passes.

Rotatably mounted in the shell'5 is a roto designated as a whole by the numeral 11. This rotor comprises upper and lower disks 12 and 13 which are horizontally disposed. The lowermost disk is provided with a downwardly extending tubular flange 142 which directs the water between the upper and lower disks. Interposed between these disks is a plurality of longitudinally curved blades 15. Also interposed between these disks and between the blades 15 are relatively short blades 16 which do not extend entirely across the disks. The upper disk 12 is formed with a threaded socket 17 in which is threaded a shaft 19 which is mounted in bearings 20 arranged on the pipe 10. A pulley 21 is fixed to rotate with the shaft 19 and is adapted to receive a belt or other would otherwise be the case.

It will be manifest that as the water or other fluid passes between the disks 12 and 13 and as the shaft 19 is rotated, the water will flow between the blades 15 and 16 which will force the same up through the pipe 10.

Connecting the upper edge of the flange 7 with the top wall of the casing are a plurality of dams designated 18 which are curved reversely to the blades 15 and 16 and are. adapted to momentarily interrupt the centrifugal flow of the water impelled by said blades and to direct such water outwardly toward the outer walls of the casing. The reaction, due to the resistance of these dams causes the pressure to increase in direct ratio to the speed of the runner and this pressure increase will enable the pump to elevate a column of water with greater speed and to work against a higher head than The continuity of the water course around the space provided between the flange 7 and the outer wall-ofthe casing. is interrupted by the partition wall 9. The purpose of this partition wall is toentirely separate and keep from contact the low pressure water at the be ginning of the water course from the higher pressure water at the outlet, thereby preventing the equalizing effect that the two 1 bodies of unequal pressure would exert on each other if in contact. Such contact would by friction, adhesion and intermingling of the waters, decrease the pressure of the high pressure body of water which in this case would be the discharge water at its point of exit from the pump chamber.

From the foregoing it will be evident that the water or other fluid passes between the disks 12 and 13 and is impelled by the blades 15 and 16 against the dams 13 and outwardly through the spaces between said dams against the outer wall of the easing Copies of this patent may be obtained for and subsequently into the discharge pipe. As previously mentioned, the dams 13 by moi'nenta'rily' interrupting the centrifugal flow of the water cause a reaction or pressure against the blades 15 and 16 which adds to the lifting power of the pump owing to the pressure caused by such resistance.

This form of the invention is illustrativeonly and it is to be understood that the invented idea maybe carried out in other eonstructions that may be fairly embodied in the claims herewith appended.

I claim:

1. A pump including a horizontal casing having a central opening formed in the bottom wall thereof, a vertical flange surrounding said opening, a-plurality of spaced dams connecting said flange with the upper wall of the casing, and an impeller rotatable within said flange and including a plurality of blades adapted to direct the water against said dams and outwardly through the spaces therebetween.

2. A centrifugal pump, including a horizontal casing provided with a central inlet opening in the bottom wall thereof, a vertical flange surrounding said opening, a water passage surrounding said flange and having an outlet communicating therewith, a part-ition interrupting the continuity of said water passage adjacent said outlet, a plurality of dams connecting the upper edge of said flange with the top wall of the casing, and an impeller rotatable within said flanges and dams, said impeller including a pair of superimposed disks, a plurality of blades connecting said disks, and an inlet depending from one of said disks. v

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. v

. JAMES D. BELL.

Witnesses:

ANDREW R. BnAcK', BURR WILLIAMS.

five cents each, by addressing the Commissioner of Patents Washington, I); 0'.

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