US1781803A - bizzarri - Google Patents

Description

Nav. 18, 1930. l A, B|ZZARR| 1,781,803

CIL PUMP Filed June 29, 1927 2 Sheets-Sheet l `vPatented Nov. 1.8, ,1930

PATENT FFICE`- ANTHONY BIzzAnm, or NEW YORK, N. Y.

on. :PUMP

Application tiled June 29, 1927.. Serial No. 202,214.

IMy present invention relates to pumps and pump constructions and aims to devise devices of the general character indicated which are sim le in construction, which may be readily abricated vand assembled, wluch are economical in the use ofthe power required for their operation, 'and which are highly efficient in operation. In one of lts forms the present `invention is adapted to be usedwlth '10 particular .success for pumping fuel oil in connection with fuel `oil burners, although adapted -for all other uses for which pumps are ordinarily-employed. -In another of its forms, the umpof the present invention is.

.adapted with particular success to be employed for the pumping of lnon-lubricating .liquids at high pressures under such conditions that the non-lubricating liquids are not permitted to impair the operatingproperties of the pump or to interfere with its eiciency,'

as would be the case in the pumps of ordinary constructions now employed for pumping non-lubricating liquids.

Other: obj ects and advantages of the devices of the present invention will in part be pointed out in detail' hereinafter and will in part be obvious to those skilled in the art to which the present invention relates.

In the accompanying specification `I -shall describe and i'n the annexed drawings illustrate an illustrative embodiment of the pres-A ent invention. It is, however, to be clearly understood that my resent invention is not limited to the speci c embodiment thereof which is hereinA shown-and described for the purposes'of illustrationonly. It is further to be understood that while said embodiment. is described herein as used in connection with the pumping of fuel oil intofuel burners, this is an example merely of one particular type vof fluid ada ted to be pumped by means of thepumps of? the resent invention, the invention being equa ly well adapted for ing limited to any particular type of liquid whatsoever.

Referring to the drawing wherein I have i1- lustrated the aforesaid illustrative embodiment of the present invention:

Fig. 1 is a more or less diagrammaticview, partly in section and partly in elevation, illustratin the aforesaid illustrative embodiment of t e present invention, more particularly as vapplied to pumping -fuel oil for a fuel oil burner;

Fig. 2 is a sectional view on an enlarged scale taken along line 2--2 of Fig. 1 of the drawing;

Fig. 3 is an end view on an enlarged scale, partly broken away, showing more particularly the driving mechanism for the pump elements;

Fig. 4 is a longitudinal sectional view, partly in elevation, and on an enlarged scale,taken along line 4 4 of Fig. 1 of the drawing; and

Fig. 5 is a perspective view showing one of .the .pumpplungers and contained spring.

'.Referrlng now to the aforesaid illustrative embodiment of the resent linvention and more particularl to tiie drawing illustrating the same, 10 in icates an electric motor or other suitable source'of rotar power, the

` circuit-for which may readily e controlled by a hand-operated or other switch not here' deemednecessary to .be shown. The electric motor 10 has the usual framework 11 and may carry the saddle 12 provided with the housin 13 'for a purpose shortly to be de; scribe 14 is the motor bracket having the reduced end portion 15 through which passes the motor shaft 16 having the segmental-circular end portion 16.

While I may use various means for driving the pump elements of the aforesaid illustrative embodiment of the present` invention, I prefer to employl an eccentric- 20 having the cup-shaped member 21 provided with the bracket 14. 33 indicates the inner portion with the necessary loose tit over the end portion 16 of the motor shaft 16 and to be as readily removable from said end portion.

Forming a continuation of the cup-shaped ofthe eccentric housing 3l), 34 indicates the outer portion of 'such eccentric housing, and indicates a removable head which may be secured in place by the screws 36 or other suitable fastening members. I provide the inner surface of the head 35 with the said adjustment 35', preferably in the form of a steel ball in a lposition.corresponding to the center of rotation of the shaft 16', in order to maintain the eccentricin proper operative position.

. I provide in addition to'means for pumping the fuel oil, for example, to the fuel oil burner, means for effectively lubricating the fuel oil pump and also means for providing a high pressure oil packing box to prevent `the pressure of th fuel oilin the pumping system from forcing the fuel oil or other non lubricating liquid intov those parts of the system where such liquid would cause the rapid deterioration of the moving and associated parts of the pumping system.,

For this purpose, I prefer to employ in additifhi to the pump for pumping the fuel oil orother non-lubricating or other li uid, a pump for the forced circulation under igli pressure of a lubricatingifluid, the path of travel of such lubricating fluid being such as to rovide a high pressure,.lubricatin0 oil` pac ing for the pump for thel fuel oil or other non-lubricating liquid. I prefer also that b oth of these pumps shall be driven from the same driving element, preferablythe ball bearing eccentric already described.

Furthermore, wliile I have shown but'two pump elements embodied in the aforesaid illustrative'embodiment of the present invention, a greater number of such pump elements may be employed, as three or more pumps driven by the same driving element for pumping non-lubricating fluids fuel oil, water, and so forth, while the lubricating oil pump may'be so arranged and the path of circulation of the lubricating oil maiI e so disposed as to provide a high pressure, lubricating oil packing for each of the pumps used to pump non-lubricating liquids. In the present embodiment I have, however, shown and described but two such pump ele such as' ments in the device, one being for lubricating oil and the other for fueloil or other nonlubricating liquid, and I shall now describe this particular arrangement.

Communicating with the eccentric casing 3() are a plurality, here shown as two, plunger cylinders 40 and 60, the formerfor the lubricating oil pump and the latter for the fuel oil pump, for example., The cylinder 40 has the lower reduced end portion 41 fittin into the opening 30 in the eccentric casing 30. Within' the cylinder 40 is the plungerc42 into the lower end 42 of which is sweated or otherwise securely attached the plunger end portion 43 having the inner threaded reduced end portion 43 which is so threaded in order to permit the attachment thereto of the compression spring 44, the

plunger 42 being hollow for this purpose and its upper end being left open.

The plunger 42 is of an external diameter to permit it to fit snugly into the bore of the cylinder 40. 45 is a nipple or connection for permitting the introduction of the lubricating oil 46 from the tank 47 by means of the pipe 48 into the interior of the plunger cylinder 40, the pump being generally designated by reference character P1. .49 indicatesan outlet valve housing-'havingl the port 49 on which is seated the ball 49 held in place on the seat by means of the spring 50. The housing 49 is threaded into the upper end 40 of the plunger cylinder 40.

51 indicates a union or coupling commnni-v eating with the upper end 40 of the plunger cylinder 40 by way of the valve 49, and 52 indicates a circulation pipe for lubricating oil, the portion 52' of which communicates with the high pressure lubricating oil packing box 53 surrounding the plunger 61 within the plunger casing 60 of thefuel oil pump, here generally designated. by reference character P2. 52 indicates the outlet from the packing box 53 and 54 indicates the return portion of theV circulation pipe for the lubricating oil coming from the lubricating oil tank 47. A l

54 indicates the discharge outlet for returnin the lubricating oil to the tank 47. 55 indicates a check`valve comprising the housing 55 into the upper end'of which is threaded the adjustable nut 55" by the adjustment of which the pressure which the spring 56 exerts on the ball 56' controlling t ie port 56" may be readily controlled and adjusted, increasing the pressure on the ball valve 56' increasing the pressure of the oil in circulation, and decreasing the pressure of the spring 56-Ion the ball valve 56 diminishing the pressure of the oil in circulation.

The packing box 53, is so arranged as to surround a portion of the plunger 6l, as al ready indicated above. It is in the form of a substantially cylindrical fitting which rcceives the ends 52 and 52 of the portions y bearing of the pipe system 52 and 54 of the oil circulating system. For this purpose the packing box 53 may comprise the substantially cylindrical sleeve 57, one end 57 of `which is so shaped and proportioned as to receive with the necessary ti ht lit the end 52" of the pipe 54, while the ot er end 57 is so shaped and proportioned as to receive the reducing nip le 58, which in turn receives the end 52 of t e pipe 52.

Referring now to the fuel oil pump P2 which is provided with the plunger casing 60 and the plunger 61, the plunger 61 is preferably constructed in the same manner as the plunger 42 of the lubricating oil pump P1 already described and is, in particular, provided with the compression sprin 62 which is within the plunger 61, whic latter is hollow. The plunger 61 has the inner operative end 63 which bears against the ball 25 carried by the eccentric pin 24, as in t e case of the plunger 42 already described.

It will thus be apparent that each of the plungers 42 and 61 is operated from the same driving element at the same speed, each of the plungers travelling in a substantially strictly rectilinear line, thus avoidin the side thrust and consequent frictiona and mechanical losses inherent in the crank shaft and cranktype of driving means for pistons as hitherto employed in the art. It may here further be stated that the relative displacements of the pumps Pl and P2 may be suitably chosen so as to at the same time obtain the desired lubricating and packing eiectr` anld the desired speed of delivery of the fuel o1 The lower end 62' of the expansion spring 62 bears against the pin marked 64" which is situated in the valve seat 64 at the upper end of the connection 65 forming a part of the pipe line 66 communicating at its lower end with the fuel oil 67 contained in the fuel oil tank 68. The valve 64 and the fitting 65 with the pipe 66 constitute the inlet means for fuel oil to the fuel oil ump P2. The outlet means comprises the tting 69 ycontaining the ball valve 0 held against the valve seat 71 by means of the compression spring 72, the other end of which is held in position by the end 73 ofthe fitting 74 forming a part of the outlet pipe 75 leading to the fuel oil burner or the like. It may here be stated thatother liuids than fuel oil may be handled in this matter and that the pipe 7 5 may consequently be used for other means than the fuel oil burner given herein as a specific example.

This oom letes the description of the f aforesaid il ustrative embodiment of the present invention. The construction of said embodiment will, it is believed, be clear from the fore oing description. Likewise the manner o assembling said embodiment will, it is believed, be clear from the foregoing de- P2, respectively, bear.

scription. The operation of the device will' be suiiciently clear from the foregoing description but may be brieiiy summarized as follows:

The motor 10 havin been set in operation by the closing of a suitable switch, not here deemed necessary to be shown, which switch may be manually operated or automatically operated, as in thermal or other suitable controlling means, as desired, the operation of the motor causes the rotation of the eccentric carrying the ball bearing 25 against which the plungers 42 and 61 of the pump P1 and The plungers 42 and 61 are ept in operative contact with the ball bearing 25 `by means of the springs which said plungers contain.

The operation of the plungers causes the circulation of lubricating oil from the tank 47 through the inlet 45, through the outlet 49 controlled by the one-way valve 40', into the pipe 52, through the packing box 53. thence through the pipe 54, through the valve controlled fitting 55 and thus back into the tank 47. It will be noted that the pump P1 has no induction valve, the plunger acting as a piston valve. I find that with the construction of the pump here illustrated," no induction valve is necessary.

Assuming now that the tension of the spring 56 has been regulated by the adjusting member 55 to glve a certain predetermined pressure of lubricating oil 46 in the system )ust described, which pressure should be substantially in excess of the pressure in the fuel oil cylinder and associated system, such pressure will be exerted around that portion of the plun er 61 which passes through the ackmg ox 53. The plunger 61 will thereibre be properly lubricated in its reciprocating motion in the eccentric housing 34 and in the plunger casing 60.

The result of this arrangement will furthermore be to prevent any fuel oil coming from the tank 67 from being forced by its pressure past the plunger 61 into the moving parts of the pump, including the eccentric 25 and the other plunger 42. That is, the hydraulic pressure created by the oil circulating through the system through the ipe 52 and 54 and the packing box 53, excee ing the pressure exerted by the fuel oil in the plunger casing 60. There willbe no tendency of the fuel oil to leak past the packing box 53 and thus get into the Working part of the umps. By. this arrangement, I obtain a igh pressure packing box which insures the proper lubrication ofy the various `working 'pallrts of the different pumps and prevents the efficient and economical manner. vpressure lubricating oil packing box furllio and out past the outlet valve through the outlet pipe leading to the fuel oil burner or other fluid consuming device fortion of the various moving parts of the pumpl system. The pumping arrangement is furthermore such that the pistons or plungers of the several pumps may and preferably are operated from a single driving element, preferably in the form of a ball bearing eccentric which operates the pistons in a substantially strictly rectilinear line, tlius avoiding the frictional losses and wearYY due to side thrusts and the like where the usual crank shaft and crank type of mechanical movement for qperating the pistons or plungers is employe v It may here be stated that from Figs. 3 and 4 of the drawing it will be apparent that the axes of the plungers-42 and 61 are not in alignment with the center of rotation of the motor shaft 16', but the axis of each of said plungers is somewhat offset with respect to such center of rotati n. I prefer this arrangement since I hav discovered that by means of it the Iefficiency of each of the pump elementsis ap arently considerably increased and the opera ion of the pump elements and of the combined pumping systemis apparently considerably improved.

The arrangement described above has the further advantages that it is highly efficient mechanically, and provides for the proper distribution of the various fluids in a ver The hig thermore provides proper lubrication for the various moving parts of the pumps and 'prevents the non-lubricating liquid from coming into contactwith such moving parts. Other advantages and superioritiesof the devices ofthe present invention will readily occur to those skilled in the art to which the present invention relates.

What I claim as my invention is las follows:

1. In a fluid pumping system, a source Yof supply of fluid, outlet means communicatingv of supply of fluid, outlet means communicating with said second source of supply of fluid, and pumping means including a plunger communicating with said last-mentioned source of suppl of fluid, said plunger traversin said condliiit so as to be in contact with the uid passing therethrough, both of said pumping means being eccentrically operated.

2. In a fluid pumping system, a source of supply of lubricating fluid, outlet means communicating with said source of supply of fluid. pumping means communicating with said outlet means and therethrough with said source of supply of fluid, and a discharge conduit communicating with the outlet of said pumping means, in combination with a second source of supply kof non-lubricating fluid, outlet means communicating with said second source of supply of fluid, and pumping means including a plunger communicating with said last-mentioned source of supply of fluid, said plunger traversing saidl conduit so as to be in contact with the lubricating fluid passing therethrough, both of saidi pumping means being eccentrically operate 3. In a fluid pressure system, a source of supply of fluid; pumping means communicating with said source of supply of fluid, said pumping means comprising a plunger casing, a plunger mounted for reciprocation within said plunger casing, and an eccentric casing communicating with said plunger casing, and an eccentric mounted within said eccentric casing for operating said plunger; a discharge conduit communicating with the outlet of said pumping means; a second source/of supply of fluid; additional pumping means communicating with said second source of supply of fluid, said additional pumping means comprisin an additional plunger casing communicating with said eccentric casing and an additional plunger within said additional plunger casing adaptf ed to be operated by said eccentric and means interposed in said discharge conduit and communicating with said discharge conduit and with said additional plunger casing about said additional plunger for providing about said last-mentioned plunger apressure of saidv first-mentioned fluid at least equal to the normal pressure of the fluid comingfrom` said second source of supply of fluid.

4. In a fluid pressure system, a source of supply of fluid; pumping means communicating with said source of supply of fluid, said, pumping means comprising a plunger casing, a hollow, spring-pressed plunger mounted for reciprocation within said plunger casing, and ball-bearing eccentric casing communicating with said plun er casing, and an eccentric mounted within said eccentric casing f or operating said plunger; a discharge conduit communicating with the outlet of said pumping means; a second source of supply of fluid; additional pumping means communicating with second source of supply of fluid, said additional pumping means comprising an additional hollow, spring-pressed plunger casing communicating with said eccentric casing and an additional plunger within said additional plunger casing adapted to be operated by said eccentric; and means interposed in said discharge conduit and communicating with said discharge conduit and with said additional plunger casing about said additional plunger for providing about said last-mentioned plunger a pressure of said first-mentioned fluid at least equal to the normal pressure of the fluid comingfrom said second source of supply of fluid.

5. In a fluid pressure system, a source of supply of fluid; pumping means communieating with said source of supply of fluid, said pumping means comprising a plunger casing, a plunger mounted for reciprocation within said plunger casing, and an eccentric casing communicating with said plunger casing, and an eccentric mounted within said eccentric casing for operating said plunger; a discharge conduit communicating with the outlet of said pumping means; a second source of supply of fluid; additional pumping means communicating with said second source of supply of fluid, said additional pumping means comprising an additional plunger casing communicating with said eccentric casing and an additional plunger within said additional plunger casing adapted to be operated by said eccentric; and

means comprising a sleeve interposed in said Y discharge conduit and communicating with said discharge conduit and with said additional plunger casing so as to provide a high pressure fluid packing space about said additional plunger for providing about said lastmentioned plunger a pressure of said firstmentioned fluid at least equal to the normal pressure of the fluid coming from said second source of supply of fluid.

6. In a fluid pressure system, a source of supply of fluid; pumping means communi- *eating with said source 0f SUPPIY of Huid said pumping means comprising aplunger casing, a hollow, spring-pressed plunger mounted for reciprocation within said plunger casin and ball-bearin eccentric casing commumcating with said p unger casing, and an eccentric mounted within said eccentric casing for operating said plunger; a discharge condu1t communicating with the outlet of said pumping means; a second source of supply of fluld; additional pumping means communicatin with second source of supply of fluid, sai additional pumping means comprising an additional hollow, spring-pressed plunger casing communicating with said eccentric casin and an additional plun er within said ad 'tional plunger casing adapted to be operated by said eccentric; and means comprising a sleeve interposed in said discharge conduit and communicating with said discharge conduit and with said additional plun er casing so as to provide a high pressure uid packing s ace about said additional plunger for provi ing about said last-mentioned plunger a pressure of said first-mentioned fluid at least equal to the normal pressure of the fluid coming from said secondsource of supply of fluid.

7. In a fluid pressure system, a source of supply of lubricating fluid; pumping means communicating with said source of supply of fluid, said pumping means compr1s1ng a plunger casing, a plunger mounted for reciprocation withln said plunger casing, and an eccentric casing communicating with said plunger casing, and an eccentric mounted within said eccentric casing for operating said plun er; a discharge conduit communicating with the outlet of said pumping means; a second source of supply of nonlubricating fluid; additional pumping means communicatin with said second source of supply of fluid, said additional pumping means comprising an additional plunger casing communicating with said eccentric casing and an additional plun er within said additional plunger casing a apted to be operated by said eccentric; and means comprising a sleeve interposed in said discharge conduit and communicating with said discharge conduit and with said additional plunger casing so as to rovide a high pressure fluid packing space a out said additional plunger *for providing about said last-mentioned plunger a pressure of said first-mentioned fluid at least equal to the normal pressure of the fluid coming from said second source of supply of fluid; in combination with means for regulating the pressure of said lubricating fluid.

8. In a fluid pressure s stem, a source of supply .of lubricating flui pumping means communicating with said source of supply of` ing communicating with said eccentric casing and an additional plun er within said4 additional plunger casing a a ted to be operated by said eccentric; an means interposed in said dischar e conduit and communicating with said ischarge conduit and with said additional plunger casing about said additional plunger for providing about said last-mentioned plunger a pressure of said first-mentioned fluid at least equal to the normal pressure of the fluid coming from said second source of supply of fluid; in c0111- bination with means for regulating the pressure of said lubricating fluid.

9. In a fluid pressure s stem, a source of supply of lubricating ilui pumping means communicating with said source of supply of fluid, said pumping means comprising a plunger casing, a hollow, spring-pressed plunger mounted for reciprocation within said plunger casing, and ball-bearing eccentric casing communicating with said lunger casing, and an eccentric mounted wit in said eccentric casin for operating said plun er; a discharge con uit communicating wit the outlet of said pumping means; a second source of supply of non-lubricating fluid; additional umping means communicating with secom) source of supply of fluid, said additional umping means comprising an additional liollow, spring-pressed plunger casing communicating with said eccentric casing and an additional plunger Within said additional plunger casing adapted to be operated by said eccentric; and means comprlsing a sleeve interposed in said discharge conduit and communicating with said discharge conduit and with said additional plunger casing so as to provide a high pressure fluid packing space about said additional plunger or providing about said last-mentioned plunger a pressure of said first-mentioned uid at least equal to the normal ressure of the fluid coming from said secon source of supply of fluid; in combination with means for regulating the pressure of said lubricat` ing fluid.

10. In a fluid pressure s stem, a source of supply of lubricating flui pumping means communicating with said source of supply of fluid, said pumpin L means comprising a plunger casing, a ollow, spring-pressed plunger mounted for reciprocation within said plunger casing, and ball-bearing eccentric casing communicating with said plunger casing, and an eccentric mounted within said eccentric casing for operating said plunger; a discharge conduit communicating with the outlet of said pum ing means; a second source of supply o non-lubricating fluid; additional dpumping means communicating with secon source of supply of fluid, said additional pumping means comprising an additional ollow, spring-pressed plunger casing communicating with said eccentric casln and an additional plunger within said addit nal plunger casing adapted to be operated by said eccentric; and means interposed in said discharge conduit and communicating with said discharge conduit and with said additional plunger casing aboutv said additional plunger for providing about said last-mentioned plunger a pressure of May, l1927.

` ANTHONY BIZZARRI.

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