US2372480A - Rotary pump - Google Patents

Description

March 27, 1945. I J; FUCHS 2,372,480

ROTARY PUMP Filed Nov. 12, 194; 2 Sheng-sheet 1 March 27, 1945. J. FUCHS ,2,372,480

- Ro-TARY PUM;a

Filed Nov. 12, 1943 2 Sheets-Sheet 2 j figjifj *"J--HH--PEQ----f- L- l Patented Mar. 27, 1945 IROTARY PUMP Julius Fuchs, Cleveland, Ohio, assignor of fortyve per cent to Ohio Augustus J. Baker, Cleveland,

Application November 12, 1943, Serial No. 510,050 v2 Claims. (Cl. 10S-136) The present invention relates to a rotary pump of great simplicity and of efficiency. g. .The invention lso comprehends improvements in the specific construction and arrangement ofparts which will be hereinafter described and particularly pointed out in the claims.

This invention relates to pump, compressor,

high non-pulsating and similar machines of the Atype employing blades of each drum are main eccentrically,`and each shaft is provided with l' anti-friction bearings.

A primary object of the present invention is the production cfa pump of. this type which is balanced mechanically, which is practically nonpulsating and in which the torque application closely approaches uniformity.

In the accompanying drawings in which similar reference-numerals indicate the same parts throughout the several views,

Figure 1 is a view in elevation showing the interior of the pump and illustrating the manner in which the drums or rotors are mounted in the casing, and also showing in dotted lines the equal meshing gears mounted on the drum shafts.' V

` Figure 2 is a view in elevation of the cover plate'of the pump, and illustratingthe manner in which the eccentrically positioned shafts are mounted vin the cover plate ,and on which the roller bearings are rotatably mounted.v

. Figure 3 is a sectional view taken on line A-\-A in Figure 1.

Figure 4 is an end view on an enlarged scale of the rotor 'or drum showing the radial ways for the blades or vanes therein.

Figure 5 is a view on an' enlarged scale showing the drum or rotor in the same position as -that shown in Figure 3, and illustrating the position of the blades or vanes in their cooperative relation with the roller bearings mountedpn the shaft in the cover plate.

Figure 6 is a view on. an enlarged scale of the rotor or drum shown in Figure 3, and illustrating the position of the vanes or blades at right angles that extends beyond .to those shown roller bearings is in Figure 5 in their cooperative relation with the roller bearing mounted on the shaft in the cover plate.

Figure 7 is a detail view in elevation of one of the blades shown in the enlarged view in Figure 5.

Figure 8 is'a detail view in elevation of one of the blades shown in the enlarged view in Figure 6.

Referring to the drawings the pump case is formed in two parts I0 and il.' In the part l0 there is provided two chambers l2 and.. which the drums or rotors i6 and I5 are eccena trically and rotatably mounted. In the. drums there are provided radial ways lli in which the blades or vanes slidingly t.

The part I0 lis provided with an inlet opening Il and an outlet opening dividesl into two laterally disposed channels I9 and 20, which communicates with the chambers l2 and i3. The division is caused by the wall 2l, which also extends upwardly between the rotors and terminates in the outlet opening as at 22 where it again divides the opening into two channels 23 and 24 through which the fluid is discharged 'into the outlet opening. The passage of the iiuid through the pump is indicated by arrows. y

lFlach rotor or' drum is provided with a shaft the part i0 of the case. The shafts are rotatably journalled in a bearing as at 25, see Fig. 3. Each shaft is provided with a fixedly mounted gear as at 26 and 21. These meshing gears are equal each being provided with the same number of teeth. One of the shafts extends beyond the gear keyed thereon and is provided with a coupling as at 28, see Fig. 3, by means of which the pump may be connected to a suitable electric motor to actuate the pump. The teeth are not shown in Fig. i on the gears, but it is to be understood that the teeth .are continuous around the periphery of each gear and are in meshing relationship.

Il or cover plate there are pro- 30 on which the bearings are mounted. One set of these shown at 3|, 32 and 33 in Figs.

roller 3, 5 and. -6. The Shaft is plvded with a head 34 bearings from slipping o the as at to connect As both the shafts to prevent the shaft,and a shouldered end lthe shaft to the cover plate. are the same, it

of one will suffice for both. and

The parts I0 Il are held together by a number of bolts and nuts 36 and 31; the holes for the bolts are shown 38. One set of theblades or vanes is 'provided with I8. The inlet opening.

is thought that the description y Y wise.

a prole or-edgethat is interrupted as at 39 so that portions of the blade rides upon two of the ball bearings as at 3| and 33, see Figs. 3, 5 and 6. The diametrically opposite blades or vanes are so formed that they are provided with a projection 40 that rides upon the ball bearing-32, see

Figs. 3, 5 and 6. The blades are-all notched at one end as at 4l, to permit the blades to cooperate with the ball bearings mounted on the shafts in the cover plate. The vanes or blades are held in frlctional contact with the chamber wail in their advancing or receding positionvby means of the shafts with their roller bearings thereon that are so arrangedthat they project into the interior of the drums eccentrically. It will be noted in Fig. 1 that the blades or vanes in the working chamber on the right as you. look at the drawings are .forty-five degrees from the vertical or horizontal, while the blades in thex working vchamber to the left are vertical and horizontal, and when. assembled the gears are mounted on the shafts when the blades are thus positioned, because it has been found that-the pump when so geared produces better results. The rotor drum in the working chamber to the Aazwafiso vanes arranged radially in the rotor drums and right turns clockwise While the rotor drum in the working chamber to the left turns counter-clock- It is believed that nism as a Whole will be clear, in view of the foregoing description which has been given in connection with that of the construction of the same.

0f course, changes may be made in details of construction and arrangement of parts withoutV departing from the spirit and scope of my invention. I do not limitA myself, therefore, to the exact form herein shown and described other than lby the appended claims.

What I claim asmy invention and desire to secure by Letters Patent of the United States is:

1. A pump of theclass described comprising a casing, a cover plate therefor, the casing having an inlet opening and an .outlet opening, and also i having a plurality of working chambers therein,

a. wall formation positioned in the casing its arrangement being such as to provide laterally disposed channels communicating with 4the working chambers therein from the inlet opening, and extending upward between the workingv chambers and forming a portion thereof. but stopping the operation of the mechashort of the length of the outlet opening to provide discharge channels communicating with the Voutlet opening, rotor drums eccentrically mountslidably mounted therein, means mounted in 'and supported bythe cover plate and projecting into the interior ofthe rotor. drums eccentrically, a pair lof the oppositely disposed vanes having :an interrupted edgeand adapted to ride upon spaced portions of the means projecting into the interior of .the rotor drums, whilst the pair of vanes diametrically opposite are each provided with a vprojection that rides upon the portion between the spaced portions, the said projecting means adapted vto effect frlctlonal contact of the vanes with the wall in the working chambers, and means to actuate the rotor drums in'unison.

`2. A pump of the class described, comprising, in combination, a casing having an inlet and 'outlet opening and also having a plurality of working chambers therein, a wall formation in the casing its arrangement beingsuch as to provide laterally disposed channelscommunicating with the working chambers from `the inlet opening, and extending upward without interruption veach rotor drum .having a point of tangency with the working chambers symmetrically disposed at` an angle offorty-iive degrees to the vertical axis l of the rotor drums to the right Aand left above the horizontal axis of the aforesaid rotor drums, a pair of varies having a notched end and a notched edge oppositely slidably mounted in radial slots in therotor drum, a second pair of venes having a notchedend and an edge having a projection thereon, oppositely slidably mounted in the other of the radial slots in the rotor drums, a cover plate for the casing, a headed shaft xed in the cover plate, friction reducing means mounted on the fixed shafts and cooperating with the vane notches extending into the rotor drums eccentrlcally, the aforesaid friction reducing means adapted to maintain the vanes in fric'- tional contact with the chamber walls on, rotation of the rotor drums, and meshing gears con-

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