US2384286A

US2384286A - Rotary pump

Info

Publication number: US2384286A
Application number: US468745A
Authority: US
Inventors: Dowling Dudley Russell
Original assignee: FREDERICK ZINA EAGER
Current assignee: FREDERICK ZINA EAGER
Priority date: 1942-05-14
Filing date: 1942-12-12
Publication date: 1945-09-04
Anticipated expiration: 1962-09-04

Description

. p D. R. DOWLING ,3

ROTARY PUMP 4 Filed Dec. 12, 1942 2 Sheets-Sheet 1 Y Invenlor:

Dudley Russell DOG/NIH attorneys Sept. 4, 1945. D. R. DOWLING ROTARY PUMP Filed Dec. 12. 1942 75 Sheets-Sheet 2 I yew.-

Dud 2g Rus ell Doulin b ozw g aifornegs Patented Sept. 4, 1945 ROTARY PUMP Dudley Russell Dowling, Graceville, near Brisbane, Queensland, Australia, assignor of onethird to Frederick Zina Eager and one-third to John Kelly, both of Brisbane, Queensland,

Australia Application December 12, 1942, Serial No. 468,745 In Australia May 14, 1942 2 Claims.

An object of this invention is to provide a simple and efllcient gate for a rotary pump which will make the pump self-priming.

A further object of this invention is to provide a more eflicient and easily renewable seal between the respective cylinders of rotary pumps where the walls of each cylinder consist of the adjacent portion of the cylindrical cavity in the pump body plus concentric portions of a rotor revolving therein, and the pistons consist of eccentric discs integral with said concentric discs.

The invention will be fully understood from the following description taken in connection with the accompanying drawings wherein- Figures 1, 2 and 3 are respectively front, end and rear elevations of a pump embodying the invention;

Figure 4 is a front elevation with the cover removed;

Figure 5 is a pictorial view of the rotor embodied in Figure 1; and

Figure 6 is a pictorial view of the gates.

Referring to the drawings, I is a pump body provided with cover l0 and II are bosses on body ID and cover l2 are grease cups; 3 and M are respectively inlet and outlet passages for water; i is a base; I6 is a gland; H and I8 are spring adjusting studs. The body [0 has a cavity l9 (see Figure 4) which is cylindrical and in connection with a gate chamber preferably at the top. This gate chamber 20 is between the inlet I3 and outlet l4 and has within it a pair of gates 2| and 22 (see Figure 6) of somewhat T-shape, the heads 2| and 22 of the bars being machined to the curvature of of the wall 20 of chamber 20 against which they move closely adjacent. Gates 2| and 22 are pivoted to the body III by a pin 23 passing through holes in the ends of the stems, said pin being located at the outlet and on the side thereof away from the flow of liquid. 24 and 25 are springs between studs l1 and i8 and upper surfaces of gate stems 2| and 22. 26 is a rotor provided with bosses 21 keyed to shaft 28. Rotor 26 consists of a central disc 26 and two opposed integral eccentric discs 26 and 26 (see Figure 5). Gates 2| and 22 are recessed at 29 and 30 to snugly accommodate disc 26 of rotor 26. 3| is a rin in a groove in disc 26.

In operation the rotor 26 is rotated in a clockwise direction and the gates 2| and 22 are respectively in contact with the peripheries of discs 26 and 26. They always maintain contact being held down by

springs

24 and 25, the tension of which may be adjusted by studs I1 and I8.

They are also in contact with the vertical walls of disc 26 along the lower portion of their inside surfaces (Figure 6) and in contact with ring 3| along the upper portion of said surfaces. The ring 3| of central disc 26 is in close contact with the wall of chamber l9 .and with the gates 2| and 22 as noted and disc 26 rotates in the

recesses

29 and 30 of gates 2| and 22.

Gates 2| and 22 slide against the sides of disc 26 and of rin 3| as they alternately rise and fall during the rotation of discs 26 and 26.

They thus segregate the water entering via inlet I3 and leaving via outlet l4; and at the same time disc 26 and ring 3| segregates the water which is being drawn in behind the respective discs 26 and 26 and being forced out by them.

In Figure 4 the water is being drawn into the space behind gate 2|, periphery of disc 26', disc 26, ring 3|, body l0, and cover ll. Concurrently water is being forced out from the space in front of gate 2| periphery of disc 26', disc 28 ring 3|, wall of body l0, and cover Disc 26 has caused water to be discharged, has drawn in a further supply, and as rotation proceeds that charge will be delivered to outlet H. The discs 26 and 26 are causing the inflow and outflow at opposite periods and are thus preserving a balance.

Although the invention has been described and illustrated in connection with a pair of opposed eccentric discs and a pair of gates which construction is most efiicient, it will be understood that one eccentric disc may be employed with one gate in a gate chamber, or that a multiplicity of balanced opposed eccentrically mounted discs and a respective number of said gates in a chamber may be employed without departing from the spirit and scope of the invention.

I claim:

1. In a pump, in combination, a body having .1 cylindrical cavity and a gate chamber formed therein, said gate chamber extending tangentially to said cavity, the entirety of said gate chamber being a part of said cavity and communieating directly therewith, an inlet formed in said body, an outlet formed in said body on the same side of the cylindrical cavity as said inlet, and on the opposite side of said gate chamber with respect to said inlet, a rotor eccentrically supported in said body to maintain a portion of the periphery thereof in sliding contact with the periphery of said body cavity, means constituting a gate located in said gate chamber in substantial alignment with said inlet, the inlet, the outlet, the gate chamber and the gate being located 2 a,sse,aeo

close to one snother, ssid ate havin on eIon-.

lsted stem and a. portion extending transversely tossidstemsndhsvinsssubstnntinilywide surisce' in slidins contact with s. substsntislly wide surisce of said :sfe chamber which extends trsn'sversely to the oi said inlet and hsvin: snother substsntially wide surioce sliding upon the periphery of said rotor. and a pivot mounted at said inlet on the side thereof only from the now 0! outlet nuid in the pump and carryin: the outer end oi said stem.

2,111 a. pump conforming to clsim 1, havin: a. plurslity o! gates, s. rotor consisting oi portions replscemcnt.

which no concentric snd eccentric relstively to its center oi rotation, esch 01 said sates slidins on the periphery of s separate eccentric portion, the eccentric portions being located on esch side 0! the concentric portion. :11 said portions belnz inte rni; and rinse in grooves in the con centric portions, ssid ring; beinl in sliding contsct with the wall of the cavity tor-min: the body oi the pump, snd also in sliding contsct wi ssid sates, ssid rings beins removsbie to i tote nu mr nossnu. nownmo.