US1501051A - Rotary pump-sealing means - Google Patents

Rotary pump-sealing means Download PDF

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Publication number
US1501051A
US1501051A US67070223A US1501051A US 1501051 A US1501051 A US 1501051A US 67070223 A US67070223 A US 67070223A US 1501051 A US1501051 A US 1501051A
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Prior art keywords
chamber
plate
rotor
sealing
ring
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Expired - Lifetime
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Hill Ebenezer
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Hill Compressor & Pump Co
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Hill Compressor & Pump Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member

Description

July 15,1924.- 1,501,051

- E. HILL ROTARY PUMP SEALING MEANS Filed Oct. 25. 1923 2 Sheta-Shcet 1 4y I INVENTOR /6 Y BY July 15 1924. 1.501,Q5' 'l E. I HLL ROTARY PUMP SEALING MEANS Filed Oct. 25. 1923 2 sheen-shut INVENTOR ATTORNEY A 1. 01.051 Fries.-

nssnnznn HILL, or scorn NORWALK, commcricur, asslenoa re turn mm. coma a route comranmor New YoaK, N. Y., a coaromrron or DELAWARE.

smears.

.To all whom it may concern: i

Be it known that I, EBENEZER HILL, a citizen of the United States, residing at South Norwalk, in the county of Fairfield 5 and State of fionnecticut have invented a new and useful Improvement in Rotary Pump-Sealing Means, of which the following is a specification.

This invention relates generally to rotary 1o fluid pumps and more particularly to the type for pumping or compressing fluids which have a. rotor containing a driving gear. with internal teeth and a driven gear with a different number of external teeth, the latter gear being eccentrically mounted within the former gear and the teeth so intermeshing that the rotation of the gears compresses and discharges whatever fluid is admitted between the gear teeth.

Pumps of this character have been provided with a ported sealing plate and means for causing the discharge pressure of the pump to be so exerted on the plate as to force it against the faces of the rotor and gears and prevent leakage of the fluid being pum ed across the ends of the teeth, and. they ave also been provided with means for causing the discharge pressure of the pump to be so exerted on the back of the rotor as to press the rotor and gears forward against the sealing surfaces whereby the wearing surfaces have been sealed according to the pressure produced by the pump. I The object of the present invention isto arrange means in pumps of this nature by which in a simple manner the sealing engagement of the wearing surfaces and the amount of wear can be effectively controlled, which means cheapen the construction and .40 so act as to automatically take up all wear that may occur, and can be inexpensively and quickly refitted-should the wear become .excessive as a result of long and hard use.

. This object is attained by placing a metal as wearing ring in the pumping chamber around the outside of the edge of the rotor in such position that the outer edge of the ring will be in the same plane as the outer edge of the rotor and the exposed faces of the gears, whereby the sealing plate will bear agamst these elements equally and the wear,

onthe parts will be uniform.

In the accompanying drawings Figure 1 shows a longitudinal section of a pump constructed according to this invention; Fig.

2 is a detail on larger scale showing the manner in which the sealing-and wearing parts engage. Fig. 3 shows a face view of the pump with the head removed and a portion of the sealing plate broken away. Fig. 4' is 60 V a section on the plane indicated by the dotted line 4A= on. Fig. 1.

The casing 1 is generally cylindrical in transverse section and it has a head 2 secured-insuch manner that it may be reas .an intake opening 3 and in the other side of the casing is a discharge opening 4. The intake opens opposite the intake port 5 in the sealing plate 6, while the discharge communicates with apassage 7 in the head that opens opposite thev discharge port 8 through the sealing plate. The cylindrical rotor 9, which is fitted in E5 the pumping chamber 10 so that it may have a longitudinal as well as a rotary movement therein, has a hub 11 that is supported b anti-friction bearings 12. The driving sha 13 is splined .to the rotor hub so that it will turn the rotor without obstructing its longitudinal movement. A stufiing box 14' is arranged to prevent leakage about the the sealing plate by nut 20, and its axis is eccentric to the axis of the driving shaft, so thatv the inner gear will be eccentric to the outer gear, as is well understood in pumps of this class.

' In a recess in the pumping chamber and encircling the outer edge of the rotor is a.

ring 21 This ring is made so wide that its outer face will be in exactly the same plane as the outer end of the rotor and the exposed faces of the intermeshing gears.

The sealing plate has an axial movementin the chamber in the casing toward the rotor, gears and sealin ring, being normally pressed againstthe aces of these part by 'a spring 22. The outer end of the sealing plate is preferably provided with packing rings 23 thatfit the circular innerwall of the chamber. The discharge port 8 in the sealing plate is desirably elongated and is positioned so as to extend at the sides of the gears adjacent to the locality Where the teeth bottom, while the intake port 3 in the sealing plate is shown as having a plurality of openings opposite the locality where the crests of the teeth of the gears contact. (Fig. 3). The chamber 15 back of the rotor has a connection 23 leading from the receiver 24 into which the fluid compressed. by the pump passes from the discharge.

With the construction described discharge premure is admitted to the chamber 15 and is exerted on the back of the rotor so as to tend to force the rotor" and the gears forward, and discharge pressure filling the space in a chamber in front of the sealing plate forces the sealing plate backward a ainst the rotor, gears and sealin ring.

hen the pump is starting up and t ere is no discharge pressure the sealing plate is pushed up against the sealing ring and the faces of the gears by the spring. As the pressure builds up, it forces the sealing plate back against the sealing ring and the rotor and gears, and coincidently forces the rotor and gears forward against the sealing plate. If there is any wearing friction either the sealing plate or the gears will be slightly worn, and as the sealin ring will hold the plate in a definite position, in case any wear take place on either part, the pressure against the sealing plate will push the sealing plate against the ring, and the pressure back of the rotor will push the rotor and gears against the sealing plate. The amount of Wear in any event is extremely slight, but it practically ends as soon as the parts are worn so that the edge of the ring and the edge of the rotor and the faces of the gears are in the same plane. If it is desirable to bring the sealing plate in a closer proximity to the faces of the gears all that it is necessary to do is to remove the ring and polish it so as to remove a fraction of a thousandth of an inch of its width and then reinsert it. With this simple construction the sealing engagement of the parts and the amount of friction, and consequently the extent of wear, is under exact control.

The invention claimed is 1. A rotary pump having a casing containing a chamber, co-acting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the pumpin members,a plate axially movable in the c amber, and means whereby said plate is pressed against the pumping members and said ring.

2. A rotary pump having a casing containing a chamber, co-acting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the pumping members,

vmeans permitting fluid pressure to be exerted on said plate and force it against the pumping members and said ring.

4. A rotary pump having a casing containing a chamber, coacting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the pumping members,

a plate axially movable in the chamber, a spring pressing said plate against the pumping members and said ring, and means for admit-ting fluid pressure against said plate and supplementing the pressure of the spring.

5. A rotary pump having a casing containing a chamber, co-acting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the plate axially movable in the chamber, means pressing said plate against said ring, and means whereby the pumping members are pressed against said plate.

6. A rotary pump having a casing containing a chamber, co-acting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the pumping members, a plate axially movable in the chamher, and means for admitting discharge pressure to each end of the chamber and causing it to be exerted in opposing directions so as to force the. pumping members and plate toward each other.

7. A rotary pump having a casing con-, taining a chamber, co-acting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the pumping members, a plate axially movable in the chamber, means adapted to press said plate against said ring, and means adapted. to press said pumping members against said plate.

8. A rotary pump having a casing containing a chamber, co-acting pumping members rotatably mounted in said chamber, a sealing ring removably located in the chamber and encircling the pumping members, a plateaxially movable in the chamber, a spring pressin said plate against said ring, means for a mitting discharge pressure against said plate and supplementing the pressure of the spring, and means for admitting discharge pressure and forcing the pumping members against the plate.

9. A rotary pump having a casing conpumping members, a

means permitting fluid said ring.

taining a chamber, a rotor and co-actin 4 pumping gears rotatably mounted in sai chamber, a sealing ring removably located in the chamber and encircling the rotor, a plate axially movable in the chamber, and

ressure to be exjerted on said plate an force it against 10. A rotary pump having a casing containing a chamber, a rotor and co-acting pumping gears rotatably mounted in said chamber a sealing ring removably located in the c amber and encircling the rotor, a plate'iaxiall movable in the chamber, a spring pressmg said plate against said ring, means for admitting fluid pressure against said plate and supplementing'the pressure of, the spring, and means for admitting fluid pressure against the rotor and forcing it 20 and the gears against said plate. I

taining a chamber, co-acting pumpinggears 11'. A rotary pump having acasing con rotatably mounted in said chamber, a seal= ing ring removably located in the: chamber and encircling said gears, a ported plate axially, movable in the chamber, and means 12. A rotary pump having acasing containing a chamber, a rotor and vco-aoting exerted on said plate and force it against" said ring, and means for permitting fluid pressure to be exerted ,on said rotor and force it and the gears a 'ainst said EB NEZER adapted to press said plate against said ring; v

Elite. 6

US1501051A 1923-10-25 1923-10-25 Rotary pump-sealing means Expired - Lifetime US1501051A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621603A (en) * 1948-08-31 1952-12-16 Julian B Thomas Rotary pump
US2782724A (en) * 1950-05-11 1957-02-26 Marion W Humphreys Vane-type rotary pumps and motors
US2787963A (en) * 1953-05-05 1957-04-09 Sundstrand Machine Tool Co Pump
US3026809A (en) * 1956-04-06 1962-03-27 Borg Warner Internal-external gear pump
US3198127A (en) * 1959-05-19 1965-08-03 Robert W Brundage Hydraulic pump or motor
WO2003067030A2 (en) * 2002-02-05 2003-08-14 The Texas A&M University System Gerotor apparatus for a quasi-isothermal brayton cycle engine
US20030228237A1 (en) * 1998-07-31 2003-12-11 Holtzapple Mark T. Gerotor apparatus for a quasi-isothermal Brayton Cycle engine
US20060279155A1 (en) * 2003-02-05 2006-12-14 The Texas A&M University System High-Torque Switched Reluctance Motor
US20070237665A1 (en) * 1998-07-31 2007-10-11 The Texas A&M Univertsity System Gerotor Apparatus for a Quasi-Isothermal Brayton Cycle Engine
US20090324432A1 (en) * 2004-10-22 2009-12-31 Holtzapple Mark T Gerotor apparatus for a quasi-isothermal brayton cycle engine
US20100003152A1 (en) * 2004-01-23 2010-01-07 The Texas A&M University System Gerotor apparatus for a quasi-isothermal brayton cycle engine

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621603A (en) * 1948-08-31 1952-12-16 Julian B Thomas Rotary pump
US2782724A (en) * 1950-05-11 1957-02-26 Marion W Humphreys Vane-type rotary pumps and motors
US2787963A (en) * 1953-05-05 1957-04-09 Sundstrand Machine Tool Co Pump
US3026809A (en) * 1956-04-06 1962-03-27 Borg Warner Internal-external gear pump
US3198127A (en) * 1959-05-19 1965-08-03 Robert W Brundage Hydraulic pump or motor
US7186101B2 (en) 1998-07-31 2007-03-06 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle Engine
US8821138B2 (en) 1998-07-31 2014-09-02 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US20100266435A1 (en) * 1998-07-31 2010-10-21 The Texas A&M University System Gerotor Apparatus for a Quasi-Isothermal Brayton Cycle Engine
US20030228237A1 (en) * 1998-07-31 2003-12-11 Holtzapple Mark T. Gerotor apparatus for a quasi-isothermal Brayton Cycle engine
US7726959B2 (en) 1998-07-31 2010-06-01 The Texas A&M University Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US20070237665A1 (en) * 1998-07-31 2007-10-11 The Texas A&M Univertsity System Gerotor Apparatus for a Quasi-Isothermal Brayton Cycle Engine
US9382872B2 (en) 1998-07-31 2016-07-05 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US20060239849A1 (en) * 2002-02-05 2006-10-26 Heltzapple Mark T Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US7008200B2 (en) 2002-02-05 2006-03-07 The Texas A&M University System Gerotor apparatus for a quasi-isothermal brayton cycle engine
WO2003067030A2 (en) * 2002-02-05 2003-08-14 The Texas A&M University System Gerotor apparatus for a quasi-isothermal brayton cycle engine
US20030215345A1 (en) * 2002-02-05 2003-11-20 Texas A&M University Systems Gerotor apparatus for a quasi-isothermal brayton cycle engine
WO2003067030A3 (en) * 2002-02-05 2003-12-31 Texas A & M Univ Sys Gerotor apparatus for a quasi-isothermal brayton cycle engine
US7663283B2 (en) 2003-02-05 2010-02-16 The Texas A & M University System Electric machine having a high-torque switched reluctance motor
US20060279155A1 (en) * 2003-02-05 2006-12-14 The Texas A&M University System High-Torque Switched Reluctance Motor
US20100003152A1 (en) * 2004-01-23 2010-01-07 The Texas A&M University System Gerotor apparatus for a quasi-isothermal brayton cycle engine
US20110200476A1 (en) * 2004-01-23 2011-08-18 Holtzapple Mark T Gerotor apparatus for a quasi-isothermal brayton cycle engine
US8753099B2 (en) 2004-01-23 2014-06-17 The Texas A&M University System Sealing system for gerotor apparatus
US7695260B2 (en) 2004-10-22 2010-04-13 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US20090324432A1 (en) * 2004-10-22 2009-12-31 Holtzapple Mark T Gerotor apparatus for a quasi-isothermal brayton cycle engine
US8905735B2 (en) 2004-10-22 2014-12-09 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US20100247360A1 (en) * 2004-10-22 2010-09-30 The Texas A&M University System Gerotor Apparatus for a Quasi-Isothermal Brayton Cycle Engine

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