US2575154A - Rotary pump - Google Patents

Description

Nov. 13, 1951 c, M, ZOLL 2,575,154

ROTARY PUMP Original Filed June 19, 1945 3 Sheets-Sheet 1 C. M. ZOLL ROTARY PUMP Nov. 13, 195

3 Sheet s-Sheet 2 Original Filed June 19, 1945 C. Z 0AA Patented Nov. 13, 1951 UNITED STATES PATENT OFFICE ROTARY PUMIP Carl Michael Zoll, New Orleans, La., assignor to Hydro Power, Inc., New Orleans, La., a corporation of Louisiana Substituted for abandoned application Serial No.

600,305, June 19, 1945. This application December 18, 1950, Serial No. 201,503

pump cylinders and a common outlet from all of said pump cylinders.

The third important object of the invention is to provide a novel device of this kind which may be driven from a motor and either directly connected to the housing of the motor or to a reduction gear housing driven in turn by the motor.

With the above and other objects in view the invention consists in general of certain novel details of the construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly claimed.

In the accompanying drawings, like characters or reference indicate like parts in the several views and:

Fig. 1 is a side elevation of the invention.

Fig. 2 is a detail section on the line 22 of Fig. 3, the view being partly diagrammatic.

Fig. 3 is a section taken substantially on the line 3-3 of Fig. 2 but extending through the entire device.

Fig. 4 is a section on the line 4-4 of Fig. 3.

In the embodiment of the invention herein disclosed there is provided a housing I!) having a circular body portion ll wherein are formed the pump cylinders l2 of the ordinary shape. These pump cylinders are arranged in equidistances around the center of the circular body I I and are equally spaced around the lower part thereof. Leading outwardly from each of the pump cylinders are intake ports and surrounding the various intake ports is a manifold l4 having a supply inlet l5 provided with a suitable flange l6 by means of which it may be connected to any source of supply. Centrally of the body H is an outlet passage Il extending through a boss l8 which may be used for connection of an outlet pipe to carry thefiuid from the pumps to any desired place. Ports l9 radiate from this outlet I1 to the various cylinders l2, these ports being curved to render outflow easy.

In each of the cylinders there is provided a pair of pump elements of the usual interlocking form so that when these pump elements are revolved they force the fluid being pumped through the cylinders. The pump cylinders open to the rear of the body I i so that these elements 20 may be inserted therein but a closure 2! is fitted in a circular recess 22 and engages on a gasket 23 which seals the inner ends of the pump cylinders. Each pump element is provided with a shaft 24 which extends through the member 2| into a hollow circular housing 25. While no means has been shown in the present drawings it is to be understood that any suitable packing may be used in connection with the shaft 24 to prevent any leakage. at this point. Such packings are, however, well known, and it is not deemed necessary here to describe the same. Keyed or otherwise secured to the shafts 24 are gears 26 which mesh with each other and consequently causes the elements 20 to revolve in unison. It will be observed from Fig. 2 that there are a number of groups of gearings and that in each group one of the shafts 24 has keyed or otherwise secured thereto a gear 2! which meshes with a gear 28 fixed on a centrally disposed shaft 29 which extends through housing and through a flange member 30 which may be welded or otherwise secured to the housing 23 for the purpose of supporting entire device. Obviously other means of support may be used but this has been here illustrated as one convenient manner of supporting directlyon either a slowly rotating motor or on a reduction gear housing driven by a motor.

In operation the fluid enters through the passage I5 and is distributed by the manifold M to the various ports l3 from which the pumps drive it through to the central discharge openings [1.

While only five pump cylinders have been here shown it is obvious that any desired number may be used, the entire matter depending on the diameter of the body II and the size of the cylinders.

What is claimed is:

1. In rotary pumping mechanism, a housing having a body portion and having a series of pump chambers spaced concentrically about the axis of said body portion, an intake port at the bottom of said housing, a pair of arcuate passages within said housing, said passages extending in opposite directions from said intake port, said passages tapering from the said intake port in cross section whereby to obtain uniform suction in the pump chambers, said passages having port communication with said pump chambers, said housing having an outlet axially positioned with reference to said body portion, said housing having passages extending radially of said body portion from the pump chambers to said outlet, pumping elements in said chambers, and means to drive said pumping elements.

2. In rotary pumping mechanism, a housing having a body portion and having a series of pump chambers spaced concentrically about the axis of said body portion, an intake port at the bottom of said housing, a pair of arcuate passages within said housing, said passages extending in 10 opposite directions from said intake port, said passages tapering from the said intake port in cross section whereby to obtain uniform suction in the pump chambers, said passages having port communication with said pump chambers, said housing having an outlet axially positioned with reference to said body portion, said housing having passages extending radially of said body portion from the pump chambers to said outlet, said radial passages having their inner ends curved in the direction of flow from said outlet whereby to avoid turbulence in the outlet, pumping elements in said chambers, and means to drive said pumping elements.

CARL MICHAEL ZOLL.

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

UNITED STATES PATENTS Number Name Date 2,138,093 Feldbush et a1 Nov. 29, 1938 2,185,338 Hassler Jan. 2, 1940 2,481,047 Sloane n Sept. 6, 1949 FOREIGN PATENTS Number Country Date 485,488 Great Britain May 20, 1938 624,177 France Mar. 29, 1927 696,069 Germany Sept. 26, 1940 846,828

France June 19, 1939

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