US2758546A - A gillette - Google Patents

Description

Aug. 14, 1956 w. A. GILLETTE ROTARY PUMP 3 Sheets-Sheet 2 Filed Aug. 20, 1953 Aug. 14, 1956 w. A. GILLETTE 2,758,546

ROTARY PUMP Filed Aug. 20, 1953 5 Sheets-Sheet 5 ROTARY PUMP Wintord A. Gillette, Lorraine, N. Y. Application August 20, 1953, Serial No. 375,407 '1 Claim. (01. 103-4) This invention relates generally to the class of pumps and is directed more particularly to improvements in pumps of a rotary type.

A principal object of the present invention is to provide an improved rotary type pump designed for pump' ing liquids or gases wherein there is provided a novel type of impeller actuated by a rotating eccentric member within a circular chamber whereby liquid or gas is drawn through an inlet port and moved around in the chamber to and discharged from an outlet port.

A further and more specific object of the invention is to provide a pump of the character above stated wherein the impeller is in the form of an annulus positioned eccentrically within a circular chamber and operatively coupled to an actuating rotating eccentric whereby the impeller is caused to roll around within the circular chamber to effect the desired movement of the liquid or gas from an inlet port to an outlet port or discharge port.

Still another object of the invention is to provide in a pump of the character stated, an annular impeller member which encircles and is rotatably supported on a rotating eccentric whereby upon the turning of the eccentric the impeller is caused to roll around within a pumping chamber, the eccentric and impeller being ro tatable one with respect to the other with a lubricated bearing band interposed between the two.

Still another object of the invention is to provide a rotary pump structure of the character stated employing a spring actuated reciprocating valve plate having edge contact with periphery of, the circular impeller and wherein friction and wear between the parts is reduced to a minimum by reason of the fact that the impeller operates with a rolling action in a circular pumping chamber.

Other objects and advantages of the invention will become apparent as the description of the same proceeds and the invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming a part of the specification, with the understanding, however, that the invention is not to be limited to the exact details of construction shown and described since obvious modifications will occur to a person skilled in the art.

In the drawings:

Figure 1 is a view in elevation of the machine or pump looking toward the front thereof, that is the part of the pump housing to which is attached the liquid or fluid inlet and exhaust box. v

Figure 2 is a horizontal section taken substantially on the line 2--2 of Figure 1. v v

Figure 3 is a vertical section taken substantially on the line 33 of Figure 2.

Figure 4 is a verticaltransverse section taken substantially on the line 4-4 of Figure 3. I g

Figure 5 is a view in perspective of the sliding valve block.

"nited States Patent 0 Referring now more particularly to the drawing it will be seen that the pump structure here illustrated is de signed to house two impellers although it is to be understood that any number of impellers may be employed in a housing of suitable size.

In accordance with the present invention there is provided for a two impeller pump structure a suitable supporting base 10 on which are mounted thevtwo vertical or upstanding supporting standards 12 each of which is provided at its top end with a circular opening 14 for the purpose about to be described.

Positioned between the standards 12, for support thereon in the manner hereinafter set forth, is the pump housing which is generally designated 16.

The pump housing 16 comprises the two spaced side walls or side plates 18 each of which is of circular form and each of which has a flat radial extension 18a.

Each of the side walls is bordered by the inwardly extending circular peripheral wall 20 which is in the nature of a flange as shown in Figure 2 and each of these peripheral walls or flanges extends along the radially directed side of the wall extension as indicated at 20a in Figure 3.

In addition to the extension flanges 20a, each side wall extension 18a has formed upon and extending longitudinally of its inner face, that is, radially with respect to the circular wall 18, the spaced parallel inner flanges 22.

interposed between the two side walls 18 and between the opposing edges of the peripheral walls or flanges 20 and 20a is the central partition wall or plate which is likewise of disk form and has a radial substantially rectangular extension portion 24a, Figure 2, which is of the same height and same radial length or extent as the wall extensions 18a and which lies between the opposing flanges 20a of the side walls and the opposing edges of the inner flanges 22 of the two side wall extensions.

The side walls and partition wall are secured together in concentric relation in a suitable manner as, for example,

by the employment of the long screw bolts 25 applied as,

illustrated in Figure 2.

With the wall construction thus described there are provided, two circular concentric, impeller chambers each of which is designated 26.

Each of the, side Walls is formed to provide the central laterally or outwardly extending hub 27 which has the terminal reduced portion 27a which is positioned in an opening 14 of a standard 12 as illustrated in Figure 2, where it may be secured in a suitable manner as, for example, by the employment of a set screw 28.

Each of the hubs 27 has fitted into the passage 27b, a suitable bearing sleeve 29.

The partition wall or plate 24 also has a central opening which is designated 30 and which is in alignment with the passages 27b of the side wall hubs and fitted in leads to an axial grease distribution passage or bore 56' running through the shaft and communicating with radial outlets 37 and 38 as illustrated for the lubrication of the bearings 29 and 30 and other parts hereinafter described.

One end of the shaft extends a substantial distance out- Y wardly beyond the packing nut, here shown as the nut 53,

and has mounted thereon and secured thereto a wheel or pulley 37 with which suitable drive may be established with a power source through the medium of a belt 38 or in any other suitable manner.

Within each impeller chamber 26 there is mounted on the shaft 31 an eccentric 39 which is of circular outline and each eccentric is secured to the shaft by a key 40.

As shown in Figure 2 the eccentrics are positioned with the high points oppositely directed and each eccentric has formed radially therethrough a grease passage 41 which communicates with the adjacent lateral passage 33 of the bore 36.

Encircling each eccentric 39 is a bearing band 42 and mounted upon each eccentric and encircling the bearing band 42 is the circular impeller 43.

The opening of each impeller is in the center thereof so that the impeller'is in the form of a flat annulus in the central opening 43a of which the bearing band 42 is positioned.

The radius of each impeller is such that at all times a peripheral surface of the impeller will'be closely positioned against the circular inner wall 26a of the impeller chamber.

In order to maintain a leak proof association between the side faces of each impeller and the adjacent side walls of the impeller chamber, each impeller is provided in each side face with the circular packing channel 44 and in each of these channels is the annular packing ring 4-5 which may be of any suitable material but is preferably bronze and the impeller body is provided with the transverse bores 46 between the concentric bearing channels 44, in which are positioned expansion springs 47 which bear against the bronze rings and force the latter outwardly against the inner faces of the chamber walls.

The arrangement of the opposing flanges a provides with the interposed extension of the partition wall or plate 24, the radial passages or ports 48, the inner ends of which open into the impeller chambers while the outer ends open into chambers ofa manifold box as hereinafter described.

As is also apparent upon reference to Figure 3, the spaced inner flanges 22 provide between them a narrow chamber 49 in which is positioned a sliding valve block 50, the radialinwardly extending edge 51 of which is rounded and directed into the adjacent impeller chamber for contact with the peripheral surface of the adjacent impeller 43. As shown in Figure 2 the valve block is of the same widthas the impeller 43 against which it bears.

Secured against the outer ends of the side wall extensions 18a and the flanges 20:: thereof to cover the open outer ends of ports 48 and the valve block chambers 49, is a manifold box which is generally designated 52. This box is secured in place by the screw bolts 53 as illustrated.

The manifold box has formed therein the two transverse fluid chambers 54 and between them a valve block lubricant chamber 55.

Each of the fluid chambers 54 communicates with two ports 48 lying at one side of a valve block 50 while the intermediate lubricant chamber 55 communicates with a valve block chamber 49. At each side of the lubricant chamber 55 the manifold block has formed therein from the outer side thereof the passage 56 which is in line with the back edge of a valve block 50 and houses a valve block actuating spring 57.

The outer, end of each spring passage 56 is closed by the adjustment nut or screw 58 whereby the tension of the spring 57 can be adjusted as desired.

The manifold block also has formed through the outer wall thereof two threaded openings or passages 59, each of which leads into a fluid chamber 54 and each of which is designed to have secured therein an end of a fluid conducting pipe 60 as shown in Figures 2 and 3.

The ports or passages 48 and the chambers 54 have not been distinguished one from the other as inlet or of the housing, this contact exhaust ports as it will be readily apparent that either of the passages 48 may be an inlet passage or an inlet port or either may be an outlet or exhaust port depending upon the direction of rotation of the impellers 43. Con sequently the ports or passages 48, the chambers 54 and pipes 60 may function as inlets or outlets as will be readily apparent.

From the foregoing it will be seen that in the operation of the present pump, when the shaft 31 is rotated the ac centrics 39 in turning will impart a rolling movement to the circular impellers mounted thereon, the impellers rolling around against the circular inner surfaces 26:: of the chambers in which they are housed. With this action it will be seen that there is no rubbing contact between the periphery of the impeller and the circular wall of the housing but merely a rolling action which reduces wear to a minimum. Likewise the frictional contact between the spring actuated valve blocks 50 and the peripheries of the impellers is such that a minimum of wear occurs.

While the circular impellers are moved with a rolling motion as stated it will also be seen that they are free to turn with respect to the eccentrics 39 so that there may be some turning of the eccentric within the impeller in association with the rolling action of the impeller.

Since the impeller is a separate and free part which is centered between the housing side wall and center plate by action of the springs 47 against the bronze packing rings 45 the necessary fluid tight connections are made with the side walls of the impeller chamber at all times without being affected by expansion or contraction of the parts. .The face or peripheral surface of the impeller is the only part which makes close contact with the wall being with the circular inner surface 26a. This contact with the face of the impeller causes the impeller to roll as previously stated to thereby move the fluid instead of pushing the fluid as would be the case if the impeller were an eccentric body turning with the driving shaft.

As previously pointed out the valve blocks are in chambers which are in communication with the lubricant chamber 55 of the manifold block and as this lubricant chamher is filled or partly filledwith suitable lubricant, the valve blocks will be fully lubricated at all timesand the springs will be assisted in maintaining an equal and constant contact of the valve blocks with the peripheral faces of the impellers.

It will also be readily apparent from the foregoing that a pump constructed in accordance with the present invention has moving parts reduced to a minimum and is of such design that either impeller or impeller eccentric, or other parts can be removed and replaced with a minimum of effort and it will also be seen that the pump structure can be readily placed at any desired angle without impairing its efficiency.

I claim:

A pump of the character stated, comprising a body having a circular chamber, a partition centered between the side walls of said chamber to divide the same into two equal parts, a shaft extending through the radial center of the chamber and supported for rotation in said side walls and said partition, a circular member mounted eccentrically on the shaft in each chamber part, means securing each member to the shaft, an annular impeller concentric with and encircling each member for free turning movement therearound and having peripheral contact with the circular wall of the chamber, adjacent parallel inlet and outlet ports opening into the chamber through said circular wall to either side of the adjacent edge portion of said partition so that said ports are common to both chamber parts, a spring urged valve block directed radially into each of the chamber parts and bearing against the periphery of each impeller, and a lubricant chamber opening through said circular wall between said ports for discharging the lubricant into the chamber parts to either side of the adjacent edge portion of said partition the impeller and valve block being equal in Width to the inside width of the chamber.

References Cited in the file of this patent UNITED STATES PATENTS 254,069 Taylor Feb. 21, 1882 1,379,785 Shockley May 31, 1921

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