US1488729A

US1488729A - Pump

Info

Publication number: US1488729A
Application number: US525031A
Authority: US
Inventors: George F Ballay
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-12-27
Filing date: 1921-12-27
Publication date: 1924-04-01
Anticipated expiration: 1941-04-01

Description

G. F. BALLAY Apn'ifi 1 192%,

PUMP

Filed Dec. 27. 1921 2 Sheets-Sheet 1 INVENTOR George FBaZZay WITNESS ATTORNEY Aprii l 1924'. 1,48%,729

G. F. BALLAY PUMP F1? 1 26 Dev. 27 1921 2 Sheets-Sheet 2 v FIG. 5.

FIG. 7. FIG. 8. FIG. 9.

INVENTOi? WITNESS 607fqe EBaZlay.

ATTORNEY Patented Apia l, @22 1,

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@hOiRGl-lll FF. EMMY, @1 5 Ml teen, (GELLIFQENEA.

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Application filed hecemher 53 To all whom it may concern:

Be it known that l, Gnoncn F. BALLAY, a citizen of the United States, and resident of San dose, in the county of Santa 5 Clara and State of California," have invented a certain new and useful Improvement in Pumps, of which thefollowing is a specification.

This invention relates to that class of W machines operable as a-pump when power is applied to operate the parts for the transportation of fluid.

The invention more especially relates to that type of machine known as rota pumps, in which there is a casing or shel usually having a substantially cylindrical chamber in which there is operative a driving rotor carrying radial blades having a defined orbital movement with a resultant fi l reci rocation of the blades or pistons in the gui es or guide-forming portions provided on or formed in the rotor.

In the usual type of such rotary pump,

one edge of the blades either has frictional contact on the inner cylindrical surface of the casing chamber, or the opposite edge travels in a track or follows along the surface of a cam, causing tremendous friction,

producing rapid wear, taking excessive power, and ultimately resulting in the freezing up or stopping of the entire machine.

In that type of rotary pump, the blades project as they approach a given position materially beyond the periphery of the rotor, with the result that the resistance of the fluid onthe exposed portions of the blades tends to rock and cant the blades and cause them to bind across the edges to of their guide ways with undue friction.

It is one of the ob'ects of the resent invention to improve t e construction of machines operative as a'rotary pump, so that the mentioned friction with its resulting wear is practically eliminated.

In other words, it is an object of the invention to provide, a simple, inexpensive, and practicable device attached to or formed on the rotor for carrying the blades to as they pass the inner cylindrical surface of the casing chamber where the liquid passes through the pump, improved means being provided for the ed'ective hearin or supporting of the blades throughout t eir width dimension at any position of the es blades; thus enabling them to run freely with respect to the rotor; also relieving them of all frictional contact against the peripheral surface of the casin chamber,

and therefore, materially re ucing the to wear.

lltis also an object of the invention to provide for connecting the pressure behind each end of the rotating side walls together and, therefore, equalizing all end thrusts as against the rotor.

it is a further object ot the invention to provide means for defining the orbital movement of the blades, allowing the blades to be radially disposed in the rotor, and to carried by the rotor as they pass the inner cylindrical surface of the casing chamber between the V suction and the discharge where the liquid travels through the pump.

The invention possesses other objects is and features of advantage some of which, with the foregoingwill be made manifest in the following description of the referred form of the invention which is i lustrated in the drawings accompanying Md ee forming part of the specification.

It is to be understood that it is not in tended to limit the invention to the embodiment' shown by said drawings and descrip tions, as variations may be adapted within es Figure l is a side elevation or the flanged m rotor, showing theseries of improved guideways in the side walls.

piston blades.

Figure .8 is a central longitudinal sectional view of one of the iston blades.

Figure 9 is a si e elevation of one of the piston blades,

The principal improvements consist, first, in providing a device for a rotor of a rotary pump with a series of improved effective extended hearings or guides onto which the blades run as they are projected beyond thebody of the rotor in which they are telescopically operated, means being rovided on the device to carry the blades ii'om the suction to the discharge and prevent them from having frictional contact on the peripheral surface of the casing chamber where the liquid travels through the ump; provision being made for equalizing t e end pressures against the rotor, andsecondly a feature of the invention is the provision providing for the defining of the orbital movement of the blades.

The improvements may be embodied in any type of rotarypump in which there is a shell or casing 2, which obviously, may be built up in any suitable manner, the present illustration not being utilized as indicating the only form of casing in which the parts may be mounted.

The shell preferably forms a substantial c lindrical c amber 3 of any diameter and t rough which there extends an ecc/entrically mounted driving shaft 4, on whichis secured what is commonly called the rotor 5, having a diameter considerably less than the diameter of the chamber 3 in which it operates and is ecoentrically located with one side of the rotor running quite close to the contiguous cylindrical inner wall of shell 7 2. In the present case the rotor approaches the top of the shells inner surface, and therefore leaves a material space between the bot-tom of the rotor and the bottom inner surface of chamber 3. One side of the shell is provided with an inlet connection 6, and the opposite side is provided with an outlet connection 7 the inlet and outlet connections in this case extending laterally from the peripheral walls of shell 2.

' The rotor 5 is provided with a plurality of substantially radial guide-forming recesses or pockets 8 extending from end to end in the rotor and through the side walls 15. In each of the ideways 8. and 8 respectively, there is s idably mounted a flat blade 9, hereinafter termed the piston blade, and which when it is retracted, ap

. preaches the bottom of its respective guideway 8 as shown in the upper partof the romesses tor 5, Figure 2, and as the rotor rotates, the blades 9 relatively move outwardly to the maximum position shown by the lowermost piston blades 9 in Figure 2, and in which position, the blades are in their maximum drlving position, forming a movable wall extending between the lower position of the rotor 5 and the opposite spaced bottom surface of the chamber 3.

As above stated, it is desirable to prevent the piston blades from having frictional contact on the inner cylindrical surface of chamber 3 and at the same time to prevent their binding on the transverse shoulders formed by the outer ends of the guide-ways .8 in the rotor 5, and this is readily accomchamber end walls, the flanges extending preferably to and beyond the outermost po- 7 sition of the outer edges of the piston blades 9, and are slotted or provided with 'des coincident with the guide-ways 8 of t e rotor as is shown by the extended guide-edges 8, Figure 3, and onto which edges the piston blades runin their outermost positions.

The guides are preferably out through the flanges to allow t e piston blades to fit into a means beyond the ends of the flanges for controllin their orbital movement, and also to allow. e pressure behind the ends of the flanges to travel through the rotor and become equalized.

The outermost edges of the slots 16 in the flanges l5 coincide with the bottom inner piston blades 9 move outwardly until they reach the outer edges 16 of the slots 8 in the flanges .15 and in which position they are held and carried on the flanges past the bottom inner cylindrical surface of the chamber 3, suficient allowance being provided to prevent the blades from havin frictional pgntact on said bottom surface 0 said cham- A very important feature of the invention is the construction of the parts so as to reduce as much slippage as possible, and also decrease cavitation in the pump. By the present construction, the suction side of the rotor is formed by one or rear face of each piston blade and by the contiguous faces a of the side-flanges of the rotor, and by the blades car on the guides 8 in the flanges,

eat ac and as the flanges rotate with the blades, there is no end clearance space as to the suction, and thus, a chamber is formed that rotates with the rotor.

It is the object to form the chambers so that one chamber or more is intaking and another or more discharging while a chamber is filled to its maximum capacity between the suction and the discharge, making a series of continuous rotating chambers that relieves the pump of extreme cavitation when it pumps against high pressures, and as there is no end clearance space as to the suction chamber the slippage of fluid through the pump is reduced.

Means are provided for determining the orbital movement and position of the several piston blades 9 and a preferred form of such meansconsists of a pair of runners in the form of rings 10, of which there is one countersunk in each end cover 18 of shell 2, the rings being disposed eccentric with respect to the rotor suflicient to allow the blades to pass the top inner cylindrical surface of the shell 2. Suitable connection is provided between the parallel rings l010 and the several piston blades 9, as shown in Figure 1, the'ends of the piston blades extending through the flanges of the rotor and enter into a given set of oblong holes 11 in rings 1010.

The rings in this case are driven by the several piston blades 9, the holes being of a length sufficient to allow the blades to pass the two centers. Suflicient allowance is also provided in the width'of the holes 11 to permit the blades to be carried on the flanges of the rotor as they ass the lower inner cylindrical surface 0 chamber 3. After the blades have assed the lower inner cylindrical surface ofchamberB, they are carried by the rings 10 past the top inner cylindrical surface of shell 2.

I claim 1. A machine operative as a pump, having a shell, an eccentric rotor therein, orbitally controlled blades slidably mounted in the rotor, and means provided in the rotor to prevent the piston blades from having frictional contact on the inner cylindrical surface of the casing between the suction and discharge where the liquid travels'through the pump.

2. A machine, operative as a pump, having a shell, an eccentric rotor therein, radial piston blades mounted in the rotor, and means provided on the rotor to prevent the blades from havin contact on the inner cy lindrical surface 0 the casing during their movement by the rotor.

3. A machine, operative as a pump, having a casing, an eccentric flanged rotor therein, piston lades mounted in the rotor and means to prevent the blades from havin frictional contact on the inner cylindrica surface of the casing between the suction and the discharge where. the liquid travels throu h the pump.

4. machine, operativeas a pump, having a casin an eccentric rotor therein, orbitally control ed blades slidably mounted in the rotor and means provided on the rotor to guide and su port the orbitally controlled blades beyon the body of the rotor and carry the blades from the suction to the dis charge.

5. A rotor for a rotary ump, having means on the rotor to prevent t e blades from having frictional contact on the inner cylindrical wall of the casing where the liquid passes through the pump.

6. A rotor for a rotary pump, having means beyond the body of the rotor for slidably supportin the blades, and carrying the blades from t esuction to the discharge.

7 A flange for a rotor of a rotating pump, provided with means to prevent the lades from having frictional contact on the inner cylindrical surface of the casing where the-liquid passes through the pump.

0 GEORGE F. BALLAY.