US2053553A - Rotary pump - Google Patents

Description

A. W BURKS Sept, 8, 1936.

ROTARY PUMP Filed Dec. 18, 1955 3 Sheets-Sheet l Sept. 8, 1936.

A. W. BURKS ROTARY PUMP Filed Dec. 18, 1933 l 5 530.5 fizz/M far/f 3 Sheets-Sheet 2 Sept. 8, 1936. A. W. BURKS ROTARY PUMP Filed Dec. 18, 1935 3 Shqets-Sheet 3 Patented Sept. 8, 1936 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to a pump constituting an improvement of the pump shown in my Patent No. 1,686,549.

In my Patent No. 1,686,549, there is shown a pump having a propeller provided with a lateral groove in one face, in which propelling blades or vanes are located. These propelling blades discharge the fluid laterally into a chamber and impart to such fluid a whirling motion that tends 19 to separate gaseous products therefrom.

According to the present invention, the propeller or rotor is provided with radially extending blades providing buckets therebetween that open from both sides, and the arrangement of the inlet and raceway are so arranged as to provide a substantially transverse discharge through the rotor.

A further feature resides in guiding the movement of the water in the separating chamber in the event that several raceways are used in the pump.

The invention comprises the novel structure and combination of parts hereinafter described, and more particularly winted out and defined in $45 the appended claims.

In the accompanying drawings which illustrate certain mechanism for practicing the invention,

Figure l is an elevational view oi a pump involving this invention.

Figure 2 is an enlarged view similar to Figure l, with the raceway plate removed.

Figure 3 is an enlarged sectional view taken upon the line m-m of Figure 2.

Figure 4 is an enlarged sectional view taken 35 upon the line IVII of Figure 3, looking in the direction of the arrows.

Figure 5 is an interior plan view of the raceway plate.

Figure 6 is an enlarged sectional view of a two raceway pump involving this invention, with the pump shaft passing through the separating tank.

Figure 7 is an enlarged elevatlonal view taken upon the line VII-VII of Figure 6 looking in the direction of the arrows and showing the attachlng screws in section.

Figure 8 is an enlarged sectional view taken upon the line VIII-VIII of Figure 8.

Figure 9 is an elevational view of the pump housing with the filter housing detached and 50 taken substantially upon the line IX- -lX of Figure 6 looking in the direction of the arrows.

Figure 10 is a sectional view taken upon the line XX of Figure 6, looking in the direction of the arrows.

In the drawings, there is shown a housing I,

embodying a cylindrical portion 2, which forms a receiving or separating chamber tor the fluid or water discharged from the pump propeller, as will later more fully appear. This housing also has a circular flange 3 upon one side that is provided with a circular recess 4 for receiving a rotor 5. It will be noted that the flange 3 merges with the wall of the chamber 2 and with the base 6 of the housing which, in fact, may constitute an integral casting.

A raceway plate 7 is adapted to be bolted to the flange 3. This plate has a substantial circular rib it upon the inner side of which there is a raceway 9 shown more clearly in Figure 5. An inlet tube it integral with the raceway plate l communicates with said raceway, as indicated at H in Figure 5. The face of the circular recess 5 has an opening it that establishes communica-- tion with the discharge end it of the raceway and the chamber '2. It will be noted that the discharge end of the raceway is spaced a short distance from the inlet end to provide a form of barrier it therebetween that separates the inlet to the raceway from the outlet thereof. With this construction, the rotor is located between the inlet and outlet openings, whereby the water is substantially transversely discharged through the rotor. The inclination of the blades will cause a discharge at a slight angle to a vertical and transverse plane through the discharge orifice.

The impeller or rotor 5 consists of a solid like portion having a hub 5a. and havingspaced impeller blades 5h upon its periphery that extendthe width of the disk. These blades slope transversely of the disk in the direction of rotation, and they increase in thickness inwardly, whereby the buckets become slightly narrower upon their dis charge side. This decrease in the width of the buckets at their discharge sides will produce increased pressure and increase the velocity oi discharge.

The pump housing is provided with a hearing it below the chamber 2 through which a shaft ll extends. The rotor 5 is fixed upon the end or the shaft H, which is journalled in a bushing I8 in said bearing, and in packing rings IS in said sleeve. An adjustable nut in the end of the bearing compresses the packing rings I 9. It might be mentioned that the hearing it has an aperture 2| for admitting water to shaft ll between the sleeve l8 and rings l9. Thechamber 2 may be provided with an outlet pipe 22 for conveying the discharged fluid to the point where it is to be used.

with reference to Figure 1, it will be noted 55 that the pump inlet is considerably above the bottom thereof, thereby insuring a certain amount of water within the casing when the pump is not in use. When the pump is started, the water therein will be available for priming purposes. The air will be first expelled and as soon as a vacuum is produced, the pump will begin its function of supplying water. The water will enter the raceway through the produced vacuum and the sloping propeller blades will carry it around the raceway in a counter-clockwise direction, as viewed in Figures 1 and 2, to the discharge opening. Due to the fact that the blades slope forward in the direction of rotation, they will have a tendency to draw the water inwardly from the raceway and when the water is discharged into'the chamber 2, it will be given a whirling motion around the wall thereof. Due to the slope of the blades and the lateral discharge through the rotor, the water will be more effectively discharged into the chamber with an increased whirling motion.

In Figures 6 to 10, inclusive, there is shown a pump involving the same principle of operation as the aforedescribed pump. It, however, possesses modifications that will presently appear. In referring to Figure 6, it will be observed that a filter unit 23 is removably attached to a modified water receiving chamber 24 that extends below the pump shaft.

The wall of the filter unit is provided with two raceways 25 and 26, as shown more clearly in Figure 7. Each raceway has an inlet 2! extending through the wall of the filter unit, and an outlet to the chamber 24. It will be observed that the outlet 28 for the raceway 26 extends through the wall of the chamber 24 at the upper end of the raceway and discharges into the upper portion of the chamber 24 while the outlet 29 for the raceway 25 extends through the wall of the chamber 24 and discharges into the lower portion of the chamber 24.

The rotor 3| is similar to the rotor 5 in that it has peripheral propelling blades thatslope in the direction of rotation and that increase in width inwardly toward the discharge side. It is located in a circular recess 32 in a flange 33 formed upon the housing 24. The shaft 34 that rigidly carries the rotor 3| is journalled in a bearing sleeve 35 extending through the chamber 24 substantially midway thereof. The housing 24 is also provided with a laterally projecting sleeve 36 having packing rings 31 therein that are compressed by a nut 38 threaded in the end of the sleeve.

It will be recalled that the fluid or water is discharged into the chamber at two points, one above and the other below the shaft of the rotor. In order to direct the flow of fluid in an orderly fashion from the lower portion of the chamber 24 to the upper portion thereof, there are provided a pair of baiiie plates 39, one directly above and the other directly below the shaft 34. With reference to Figure 10, it will be noted that the baflle plates 39 are of arcuate form and extend from the wall of the chamber 24 toward the center thereof, the arcuate medial portion thereof forming passageways between the sleeve 35 and said baflle plates for the fluid.

During the operation of the rotor, the discharge into the lower portion of the chamber 24 will set up a whirling motion in a counterclockwise direction while the discharge into the upper portion of the chamber will tend to rotate the water in a clockwise direction. There will hence be two oppositely rotating bodies of fluid in the chamber 24, separated by the baflle plates 33 and the upward movement of the fluid will occur at substantially the center of the chamber where there is the least movement.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. In a rotary pump, a casing having a chamber with a circular wall, a shaft extending through said chamber, a rotor having peripheral blades transversely inclined and extending the width of said rotor to provide open sided buckets mounted upon said shaft, the outer wall of said casing having a circular recess for receiving said rotor, said recess having an outlet opening communicating with the upper portion of said chamber, and a second outlet opening communicating with the lower portion of said chamber, a raceway member attached to said casing and having a pair of raceways opposite the blades of said rotor, said raceway member having an inlet opening to each raceway and baiile plates, one above and one below said shaft extending inwardly from the wall of said chamher.

2. In a rotary pump, a. casing having a fluid receiving chamber with an upper and lower inlet orifice, said casing having a circular recess including said orifices, a rotor having peripheral blades extending the width of said rotor and providing open sided buckets and mounted in said recess, a shaft extending into said casing and supporting said rotor, a raceway member attached to said casing and having raceways opposite the blades of said rotor, said member having inlet orifices communicating with the' raceways therein and baille plates extending inwardly from the wall of said chamber, one above and one below said shaft, and means for operating said rotor for discharging fluid into said chamber and imparting opposite whirling motions thereto above and below said baflle plates.

3. In a rotary pump, a casing having a circular chamber and a circular recess extending inwardly from the outer surface thereof, said recess having an upper oriflce and a lower orifice communicating with said chamber, a rotor having peripheral blades transversely inclined and extending the width of the rotor to provide open sided buckets, said rotor being mounted in said recess and having a diameter substantially equal to that of the recess, a raceway member attached to said casing and having raceways opposite the blades of said rotor, said raceway member having an inlet opening to each raceway, and baiiie plates extending from the wall of said chamber in spaced relation between said orifices and from opposite sides of said chamber.

ARTHUR w. BURKS.

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